WO2004077188A1 - Methods and systems for regulating room temperature with plug-in heaters or air conditioners - Google Patents

Methods and systems for regulating room temperature with plug-in heaters or air conditioners Download PDF

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Publication number
WO2004077188A1
WO2004077188A1 PCT/US2003/013152 US0313152W WO2004077188A1 WO 2004077188 A1 WO2004077188 A1 WO 2004077188A1 US 0313152 W US0313152 W US 0313152W WO 2004077188 A1 WO2004077188 A1 WO 2004077188A1
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WIPO (PCT)
Prior art keywords
temperature
signal
transmitter
switch
manager tool
Prior art date
Application number
PCT/US2003/013152
Other languages
French (fr)
Inventor
Richard D. Becker
Original Assignee
Becker Richard D
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Becker Richard D filed Critical Becker Richard D
Priority to AU2003232008A priority Critical patent/AU2003232008A1/en
Publication of WO2004077188A1 publication Critical patent/WO2004077188A1/en

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1905—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value associated with tele control

Definitions

  • This invention generally relates to systems for environmental control.
  • this invention relates to a portable thermostat device and slave switch device to control a stand-alone appliance to regulate room temperature.
  • Investing in a central heating and air conditioning system may solve these problems, but this is too expensive for many and not possible for those who rent an apartment or home.
  • the disclosed Hoffman device has a master switch that is plugged into a household outlet and a slave switch that is adapted to send a switching signal to the master swi c o c ange e s a e o e mas er sw c rom' to .- , , m v ces versa, slave switch has a toggle switch that a user manually actuates in order to send the switching signal to the master switch for remote operation of an electrical appliance plugged in to the master switch.
  • conventional remote switching systems such as the Hoffman system, are not convenient to control a stand-alone heater or air conditioner because a person must turn the heater or air conditioner on and off using the Hoffman system every time the person desires to alter the room temperature.
  • Methods and Systems consistent with the present invention provide a portable temperature sensor linked through a remote controller to a slave switch device for controlling a plug-in stand-alone heater or air conditioner without any modification to the heater or air conditioner.
  • the slave switch device separates a heater or an air conditioner from an electrical outlet.
  • the slave switch device has a receptacle to operably connect the heater or air conditioner to the electrical outlet.
  • the remote controller is configured to send a signal to the slave switch device to turn a switch in the slave switch device to on or off in association with a preset temperature or temperature range.
  • the remote control device is able to prompt the slave switch to turn the heater or air conditioner on or off, so that room temperature where the remote control device is located is kept within the preset temperature or temperature range.
  • Fig. 1 depicts a block diagram of a remote controlled switching system having a remote controller and a slave switch device suitable for practicing methods and implementing systems consistent with the present invention
  • Fig. 2 depicts an exemplary view of the remote controlled switching system of Fig. 1 installed to operate a plug-in air conditioner in a room in accordance with the present invention
  • Fig. 3 depicts a block diagram of the remote controller of the remote controlled switching system of Fig. 1;
  • Fig. 4 depicts a flow diagram of a process performed by the temperature manager tool of the remote controller to manage the operation of a plug-in heating or cooling load device;
  • Fig. 5 depicts signals sent by the temperature manager tool to the slave switch device of the remote controlled switching system of Fig. 1 in response to system mode and sensed temperature measurements;
  • Fig. 6 depicts an exemplary perspective view of the remote controller of the remote controlled switching system of Fig. 1;
  • Fig. 7 depicts a block diagram of the slave switch device of the remote controlled switching system of Fig. 1;
  • Fig. 8 depicts a flow diagram of a process performed by a slave switch driver of the slave switch device to manage the operation of a plug-in heating or cooling load device in response to the signals received from the remote controller; Jtng. y ep cts an exemp ary perspective v ew ⁇ andt er-em ⁇ ' fn €ftit o t e remote controller of the remote controlled switching system of Fig. 1;
  • Fig. 10 depicts a flow diagram of another process performed by the temperature manager tool of the remote controller of Fig. 9 to manage the operation of a plug-in heating or cooling load device;
  • Fig. 11 depicts an exemplary perspective view of another embodiment of the slave switch device of the remote controlled switching system of Fig. 1;
  • Fig. 12 depicts a block diagram of the slave switch device of Fig. 11;
  • Fig. 13 depicts a flow diagram of the process performed by a temperature manager tool of the slave switch device in Fig. 11;
  • Fig. 14 depicts a block diagram of another embodiment of the remote controller operably configured to operate with the slave switch device in Fig. 11;
  • Fig. 15 depicts a flow diagram of the process performed by a signal generating tool in the remote controller of Fig. 14;
  • Fig. 16 depicts an exemplary perspective view of another embodiment of the remote controller in Fig. 1, where the remote controller has an economy mode selection and a comfort mode selection;
  • Fig. 17 depicts an exemplary perspective view of another embodiment of the remote controller in Fig. 1, where the remote controller is capable of receiving a time range for operating in the economy mode.
  • a remote controlled switching system 100 that includes a portable remote controller 102 and a slave switch device 104.
  • the slave switch device 104 is operably configured to control power flow between a load device 50, such as a stand-alone heater or air conditioner, and a wall outlet 60.
  • the slave switch device 104 includes a receptacle 106 adapted to receive an A/C power plug 52 of the load device 50, and a plug 108 adapted to mate a receptacle 62 or 64 of the wall outlet 60.
  • the portable remote controller 102 has a temperature sensor (See 306 of Fig. 3) and a transmitter (See 302 of Fig. 3).
  • the portable remote controller 102 is operably configured to monitor or read the empera ure sensor an o rigger e ransm er o sei ⁇ - a-si na . .. as shown in Fig. 1 to operate the slave switch device 104 so that the load device 50 is automatically switched on and off to maintain a predefined target temperature in the room where the remote controller 102 is located.
  • Fig. 2 depicts an exemplary view of the remote controlled switching system 100 installed to operate a plug-in air conditioner 200 in a room in accordance with the present invention.
  • the load device may be a conventional standalone air conditioner 200 that is adapted to fit into a window (not shown) in the room.
  • the plug 108 of the slave switch device 104 is connected to the wall outlet 60 and the plug 52 of the air conditioner 200 is connected to the slave switch device 104.
  • the remote controller 102 which may be located across the room, senses temperature and sends a signal 110 to the slave switch device 104 to control the air conditioner 200.
  • the remote controller 102 is a portable, handheld device that, as shown in Fig. 3, includes a transmitter 302, a temperature controller 304, a temperature sensor 306, and a power source 308.
  • the temperature sensor 306 and the transmitter 302 are each operably connected to the temperature controller 304.
  • the transmitter 302 may be a RF transmitter or infrared transceiver that is operably configured to send a signal 110 to the slave switch device 104 in response to a command or signal from the temperature controller 304.
  • the temperature sensor 306 may employ a thermostat, a thermister, or other known temperature sensing element.
  • the temperature sensor 306 may continuously provide the sensed temperature reading to the temperature controller 304 or periodically provide the sensed temperature reading when accessed or read by the temperature controller 304.
  • the power source 308 is operably connected to the transmitter 302, the temperature controller 304 and the temperature sensor 306 to supply each with operating power, (e.g., 12 V battery power). It is contemplated that the power source 308 may have an A/C power plug and transformer (not shown in figures) to connect to any conventional home power wall outlet.
  • the power source 308 supplies sufficient power to the transmitter 302 to transmit signals to the slave switch device 104 over a distance of 2-3 rooms or approximately 50 feet, preferably communicating at high-level frequencies that would pass through a barrier or wall.
  • the operation of the remote controller 102 is configured to operate with a low duty cycle.
  • the temperature controller 304 periodically monitors the empera ure an ransmi s signa s o e s ave swi c evice a -wi e y-spa intervals such as every 5 minutes.
  • the temperature controller 304 may include a processor 310 (such as any known computer central processing unit or CPU), an input keypad 312, a display 314, a memory 316, a secondary storage 318, a timer 320, and a control panel or I/O interface 322.
  • the memory 316 stores a temperature manager tool 324, which (along with other tools or drivers described herein) may be called up by the CPU 310 from memory 316 as directed by the CPU 310 to perform processes as described hereinbelow.
  • the temperature manager tool 324 may receive a target temperature from a user. Based on the target temperature and a sensed temperature received from the temperature sensor 306, the temperature manager tool 324 may send a signal to the slave switch device 104 to cause the load device 50 to operate in relation to the target temperature.
  • the temperature manager tool 324 is operably configured to operate in a heating or a cooling mode.
  • the temperature manager tool 324 receives, via keypad 312 or I/O 322, temperature setting information such as the target temperature, or a target temperature range (e.g., target upper and lower temperatures).
  • the temperature controller may configure the timer 320 or the timer 320 may be preset to periodically (e.g., every 5 minutes) send an activate signal to the temperature manager tool 324 such that the temperature manager tool 324 is prompted to compare the target temperature to the sensed temperature from the temperature sensor 306 based on the operating mode.
  • the tool 324 determines whether the current or sensed temperature is less than the target temperature (if in the heating mode) or more than the target temperature (if in the cooling mode). Based on the target temperature and sensed temperature, the temperature manager tool 324 causes the transmitter 302 to send either an ON or OFF signal to the slave switch device 104 as discussed in further detail below.
  • Fig. 4 depicts a flow diagram illustrating an exemplary process performed by the temperature manager tool 324.
  • the temperature manager tool 324 receives an operating mode input that the identifies whether the temperature controller 304 is to operate in a heating or a cooling mode.
  • the tool 324 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 608 of Fig. 6).
  • e empera ure manager oo receives a arge @mpemtur »v» a ⁇ . s €sa' keypad 312, I/O interface 322, or a preset value 326 stored in memory 316 or in secondary storage 318.
  • the tool 324 then receives a sensed or current temperature via temperature sensor 306. (Step 406).
  • the temperature manager tool 324 determines whether the sensed temperature is less than the target temperature (if in heating mode) or whether the sensed temperature is greater than the target temperature (if in cooling mode). (Step 408). If the sensed temperature is less than the target value (if in a heating mode) or more than the target value (if in cooling mode), the tool 324 prompts the transmitter 302 to send an ON signal to the slave switch device to activate the load device. (Step 410). If the sensed temperature is more than the target value (if in a heating mode) or less than the target value (if in cooling mode), the tool 324 prompts the transmitter 302 to send an OFF signal to deactivate the load device. (Step 412). After prompting the transmitter to send the ON signal or OFF signal, the temperature manager tool 324 ends processing.
  • the slave switch device 102 When the system 100 is in a cooling mode, the slave switch device 102 may be operably connected to a load device 50 that cools the surrounding environment such as an air conditioner. When the system 100 is in a heating mode, the slave switch device 104 may be operably connected to a load device 50 that heats the surrounding environment such as a coil heater.
  • the temperature manager tool 324 may insure that the room in which the remote controller 102 is located does not become too hot or too cold in accordance with the operating mode (e.g., heating or cooling mode) and the target temperature.
  • the temperature manager tool 324 may also be operably configured to maintain the sensed temperature within a predefined tolerance 328, such as +/- 3 degrees, of the target temperature.
  • the predefined tolerance 328 may be stored in memory 316 or secondary storage 318.
  • a user may indicate the predefined tolerance 328 to the temperature manager tool 324 via keypad 312 or I/O interface 322.
  • the temperature manager tool 324 may send another signal to the slave switch device o cause e oa evice o urn o so a e empera sense y ⁇ temperature sensor begins to approach the target temperature.
  • Fig. 5 depicts signals that may be sent by the temperature manager tool 324 to the slave switch device 102.
  • the temperature manager tool 324 causes the transmitter 302 to send an ON signal which may be conveyed by a first voltage level, a first frequency, or a first encoded value, such as "1.”
  • temperature manager tool 324 causes the transmitter 302 to send an OFF signal which may be conveyed by a second voltage level, a second frequency, or a second encoded value, such as "0.”
  • the transmitter 302 may be operably configured to use any known encoding technique (such as described in U.S.
  • Patent No. 4,433,719 or U.S. Patent No. 6,394,359) to generate the first and second encoded values and to transmit the respective first or second encoded value at a frequency that is detectable by a receiver (See 702 of Fig. 7) of the slave switch device 102.
  • the first encoded value for conveying an "ON" signal may be encoded in a pulse train as a "1" and the second encoded value for conveying an "OFF” signal may be encoded in a pulse train as a "0.”
  • the first or second encoded value may then by modulated by the transmitter 302 at a frequency that the receiver 702 of the slave switch device 102 is tuned to detect.
  • the slave switch device 102 may be operably configured to decode the first and second encoded values as the "ON signal” and the "OFF signal,” respectively.
  • the temperature manager tool 324 causes the transmitter 302 to send an OFF signal. If the system 100 is set to a cooling mode and the sensed temperature is above the target temperature, the temperature manager tool 324 causes the transmitter 302 to send an ON signal.
  • the keypad 312 may include a set of push buttons 602 and 604.
  • Push button 602 is operably configured to cause the temperature manager tool 324 to increment the target temperature by a predefined number, such as one. Push but on s opera y con gure to cause t e tempera ure manager too 324 to decrement the target temperature by the predefined number.
  • the display 314 is an electronic display panel 606 that the temperature manager tool 324 uses to display the target temperature for a user to view and adjust via push buttons 602 and 604.
  • the remote controller may include a dedicated switch 608 that a user may toggle or slide between heating and cooling settings to indicate the operating mode as the heating mode or the cooling mode to the temperature manager tool 324.
  • Fig. 7 depicts a block diagram of the slave switch device 102 of the remote controlled switching system 100.
  • the slave switch device may include an antenna 702, a receiver 704 coupled to the antenna 702, a slave controller 706 operably connected to the receiver 704, and a switch 708 that is operably connected to the slave controller and adapted to control power flow from the wall outlet 62 or 64 to the load device 50 when a closure signal is received from the slave controller 706.
  • the receiver 702 is preferably tuned to the transmitter of the remote controller 102, so as to effectively detect a signal sent by the temperature manager tool 324 via the transmitter 302.
  • the receiver 702 may include an amplifier and decoder to process the signal sent via the transmitter 302.
  • the receiver 702 includes a decoder 710 that uses known decoding techniques (such as described in U.S. Patent No. 4,433,719 or U.S. Patent No. 6,394,359) to identify the first encoded value sent from the transmitter as an "ON" signal and to identify the second encoded value sent from the transmitter as an "OFF" signal.
  • the slave controller 704 may include a processor 712 (such as any known microprocessor or CPU), a memory 714, and a secondary storage 716.
  • the memory 712 stores a slave switch driver 718, which (along with other tools or drivers described herein) may be called up by the CPU 712 from memory 714 as directed by the CPU 712 to perform processes as described hereinbelow.
  • the slave switch driver 718 is operably configured to cause the switch 708 to be activated (e.g., switch 708 is closed) or to be deactivated in response to receiving an "ON signal” or an "OFF signal,” respectively, from the receiver 702.
  • a power source via wall outlet 62 or 64 is operably connected to the switch 708, slave controller 706, and receiver 704 to supply each with operating power.
  • a flow diagram is depicted illustrating an exemplary process performed by the slave switch driver 718 to manage the operation of the load device 50 in response to "ON" and "OFF" signals received from the remote controller 102.
  • the slave switch driver may continually monitor or receive the signals sent by the temperature manager tool 324 via the transmitter 302 of the remote controller 102.
  • the slave switch driver 718 receives a signal from the remote controller. (Step 802).
  • the slave switch driver 718 determines whether the signal is an ON signal. (Step 804). If the signal is an ON signal, the slave switch driver 718 then detects whether the switch 708 is activated. (Step 806).
  • the switch 708 may be a normally opened switch, such that the switch 708 is closed when activated. In another implementation, the switch 708 may be a normally closed switch, such that the switch 708 is opened when activated. If the switch 708 is not activated and the switch 708 is a normally opened switch (e.g., switch 708 is currently opened), then the slave switch driver 718 activates the switch 708.
  • Step 808 Alternatively, if the switch 708 is activated and the switch 708 is a normally closed switch (e.g., switch 708 is currently opened), then the slave switch driver 718 deactivates the switch 708 so that the switch 708 is closed and the load device 50 is operably connected to the power source. If the switch 708 is activated and the switch 708 is a normally opened switch, or if the switch 708 is not activated and the switch 708 is a normally closed switch, the slave switch driver 718 ends processing as switch 708 is already closed or ON (e.g., load device 50 is operably connected to the power source).
  • the switch 708 is activated and the switch 708 is a normally opened switch
  • the slave switch driver 718 ends processing as switch 708 is already closed or ON (e.g., load device 50 is operably connected to the power source).
  • the slave switch driver 718 If the slave switch driver determines that the signal is not an ON signal (e.g., an OFF signal), the slave switch driver 718 then detects whether the switch 708 is deactivated. (Step 810). If the switch 708 is not deactivated and the switch 708 is a normally opened switch (e.g., switch 708 is currently closed), then the slave switch driver 718 deactivates the switch 708. (Step 812) Alternatively, if the switch 708 is deactivated and the switch 708 is a normally closed switch (e.g., switch 708 is currently closed), then the slave switch driver 718 deactivates the switch 708 so that the switch 708 is opened and the load device 50 is operably disconnected from the power source.
  • the switch 708 is a normally opened switch (e.g., switch 708 is currently closed)
  • switch 708 If the switch 708 is deactivated and the switch 708 is a normally opened switch, or if the switch 708 is not deactivated and the switch 708 is a normally c ose sw tc , t e s ave sw tc ver 718 en s process ng as sw tc 708 s alrea y opened or OFF (e.g., load device 50 is operably disconnected from the power source).
  • Fig. 9 an exemplary perspective view of another embodiment of the remote controller of the remote controlled switching system 100 is depicted.
  • the user may indicate a temperature range (e.g., an upper and a lower target temperature) to the remote controller 900, rather than a single target temperature.
  • the display 314 comprises electronic display panels 902 and 904 that the temperature manager tool 324 uses to display the upper and lower target temperatures.
  • Keypad 312 includes push button sets 906 and 908 that allow a user to cause the temperature manager tool 324 to adjust the upper and lower target temperatures, respectively.
  • the user may toggle or slide the dedicated switch 910 between heating and cooling settings to indicate the operating mode as the heating mode or the cooling mode to the temperature manager tool 324.
  • Fig. 10 depicts a flow diagram illustrating another exemplary process performed by the temperature manager tool 324 of the remote controller 900 to control the slave switch device 104 such that the temperature near the remote controller is maintained within the upper and the lower temperature target range.
  • the temperature manager tool 324 receives an operating mode input that identifies whether the temperature controller 304 is to operate in a heating or a cooling mode. (Step 1002).
  • the tool 324 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 910 of Fig. 9).
  • the temperature manager tool 324 receives an upper target temperature and a lower target temperature.
  • the tool 324 may receive the upper and lower target temperatures via push button sets 904 and 906.
  • the tool 324 may receive the upper and lower target temperatures via user keypad 312, I/O interface 322, or a preset value (e.g., in this implementation target temperature 326 may include an upper and lower target temperatures) stored in memory 316 or in secondary storage 318.
  • the tool 324 then receives a sensed or current temperature via temperature sensor 306. (Step 1006).
  • the temperature manager tool 324 After receiving the sensed temperature, the temperature manager tool 324 dete ⁇ riines whether the operating mode is the heating mode (or the cooling mode). (Step 1008). If the operating mode is not the heating mode (i.e., operating in the coo ng mo e , e oo t en eterm nes w et ef e " sense temperature is a ove the upper target temperature. (Step 1010). If the sensed temperature is above the upper target temperature, the temperature manager tool 324 sends an ON signal. (Step 1012) If the sensed temperature is not above the upper target temperature, the tool 324 determines whether the temperature is below the lower target temperature. (Step 1014).
  • the tool 324 sends an OFF signal. (Step 1016) If the sensed temperature is not below the lower target temperature, the tool 324 ends processing without sending a signal to alter the operation of the slave switch device 104.
  • the temperature manager tool 324 maintains the operation of the load device 50 (e.g., an air conditioning unit) such that the temperature in and around the remote controller 102 is within the target temperature range or between the lower and upper target temperatures.
  • the tool 324 determines whether the sensed temperature is below the lower target temperature. (Step 1018). If the sensed temperature is below the lower target temperature, the temperature manager tool 324 sends an ON signal. (Step 1020) If the sensed temperature is not below the lower target temperature, the tool 324 determines whether the temperature is above the upper target temperature. (Step 1022). If the sensed temperature is above the upper target temperature, the tool 324 sends an OFF signal. (Step 1024). If the sensed temperature is not above the upper target temperature, the tool 324 ends processing without sending a signal to alter the operation of the slave switch device 104.
  • the temperature manager tool 324 maintains the operation of the load device 50 (e.g., a heating unit) such that the temperature in and around the remote controller 102 is within the target temperature range or between the lower and upper target temperatures.
  • the load device 50 e.g., a heating unit
  • the spacing of the intervals at which the remote controller 102 or 900 sends messages to the slave switch is reduced, for example, from 5 minutes to 2 minutes. This insures that the temperature in and around the remote controller 102 and 900 stays within a more precise range.
  • the power source 308 is a battery, this implementation may tend to drain the power source 308, but the remote controller 102 or 900 may be built to accommodate more or larger batteries, or be designed with plug-in or rechargeable features.
  • the remote controller 1*02 of ⁇ may be c ⁇ Mgu#ed ; t& continuously monitor temperature and continuously send signals back to the slave switch device 104.
  • the slave switch device 104 includes a timer, such as timer 320, that prompts the slave switch driver 718 to check for signals periodically (e.g., every 5 minutes).
  • Fig. 11 depicts an exemplary perspective of another embodiment of the slave switch device 1100.
  • the temperature controller 304 is incorporated into the slave switch device 1100.
  • the user inputs desired temperature settings into the slave switch device 1100.
  • Fig. 12 depicts a block diagram of the slave switch device 1100.
  • the slave switch device 1100 includes a receiver 1202, an integrated temperature and slave controller 1204 operably connected to the receiver 1202 that has a decoder 710, and a switch 1206 operably connected to the temperature and slave controller 1204.
  • These elements (1202, 1204, and 1206) are operably connected to the power source (e.g., wall outlet 60).
  • the temperature and slave controller 1204 includes a CPU 310, keypad 312, a display 314, a memory 316, a secondary storage 318, a timer 320, and an input/output interface 322.
  • the memory 316 includes both a temperature manager tool 1208 (such as tool 324) and a slave switch driver 1210 (such as driver 718).
  • Fig. 13 depicts a flow diagram of the process performed by a temperature manager tool 1208 of the slave switch device 1100.
  • the temperature manager tool 1208 receives an operating mode input that the identifies whether the temperature controller 304 is to operate in a heating or a cooling mode. (Step 1302).
  • the tool 1208 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 1108 of Fig. 11).
  • the temperature manager tool 1208 receives a target temperature via user keypad 312, I/O interface 322, or a preset value 326 stored in memory 316 or in secondary storage 318. (Step 1304). The tool 1208 then receives and decodes a signal for the sensed temperature. (Step 1306). As discussed in further detail below, the tool 1208 receives the signal (that includes an encoded sensed temperature ) from the remote controller 1400 depicted in Fig. 14, which functions as a remote temperature sensing device in this implementation.
  • the temperature manager tool 1208 determines whether the sensed temperature is less than the target temperature (if in heating mode) or whether the sensed temperature is- greater than th ⁇ target temperature (if in cooling mode). (Step 1308). If the sensed temperature is less than the target value (if in a heating mode) or more than the target value (if in cooling mode), the tool 1208 sends an ON signal to the slave switch device to activate the load device. (Step 1310). If the sensed temperature is more than the target value (if in a heating mode) or less than the target value (if in cooling mode), the tool 1208 sends an OFF signal to deactivate the load device. (Step 1312).
  • the ON and OFF signal may be sent by the tool 1208 to the slave device driver via a command or a dedicated connection. After sending the ON signal or OFF signal, the temperature manager tool 1208 ends processing.
  • the remote controller 1400 depicted in Fig. 14 may not include the temperature manager tool 324. Instead, the remote controller 1400 may be operably configured to monitor or sense temperature in or around the remote controller 1400 and to send the sensed temperature in an encoded signal to the slave switch device 1100 for processing.
  • the remote controller 1400 includes a transmitter 1402, a temperature signal generator 1404 that is operably connected to the transmitter 1402, and a power source 1408, such as a battery, that is operably connected to both the transmitter 1402 and the temperature signal generator 1404.
  • the temperature signal generator 1404 includes a CPU 1406, a timer 1408, a secondary storage 1410, a temperature sensor 1412, and memory 1414.
  • the memory 1414 holds a signal generating tool 1416, which may be called up by the CPU 1406 from memory 1414 as directed by the CPU 1406 to perform operations as described hereinbelow.
  • the signal generating tool 1416 may configure the timer 1408, or the timer 1408 may be preset to periodically (e.g., every 5 minutes) send an activate signal to the signal generating tool 1416 to prompt the signal generating tool to receive, encode, and send a sensed temperature to the slave switch device 1100.
  • Fig. 15 that figure depicts a flow diagram of the process performed by a signal generating tool 1416 in the remote controller 1400.
  • the signal generating tool 1416 determines whether a prompt to check the temperature has been received. (Step 1502). If a prompt to check the temperature has been received, the signal generating tool 1416 receives a sensed temperature for the temperature sensor 1412. (Step 1504) The signal generating tool then encodes the sensed temperature into a digitized signal detectable by the receiver 1202 decoder 710 of slave switch device 1100. (Step 1506) Next, the signal generating tool sends the encoded signal via the transmitter 1402 to the slave switch device for focessing by the temperatur ⁇ and slave controller 1204. (Step 1508).
  • the transmitter 1402 of the remote controller 1400 in Fig. 14 may send the encoded signal to the receiver 1202 of the slave switch device 1100 using any known techniques, such as RF or infrared modulation, detectable by the receiver 1202. After sending the encoded signal to the slave switch 1100 or if a prompt to check the temperature has not been received, the signal generating tool ends processing.
  • the remote controller allows the user to input two temperature settings: one for an "economy” mode which, over a period of time, requires less power (allowing higher room temperatures when in the cooling mode, or lower temperatures when in the heating mode) and one for a "comfort” mode that requires more power to cool or heat the room but that provides a more comfortable environment that more nearly approximates an ideal temperature such as 72 degrees.
  • the "economy” mode may be used when the individual plans to be away from home, but wants to keep the temperature relatively close to the desired temperature in order minimize overall energy costs and avoid coming home to an extremely hot or cold environment.
  • Fig. 16 depicts an exemplary perspective view of another embodiment of the remote controller 1600 that may be used in the system 100.
  • temperature manager tool 324 or 1208 may operate in an economy or a comfort mode in conjunction with either the heating or cooling mode of operation.
  • the display 314 includes display panels 1602 and 1604 that the temperature manager tool 324 and 1208 uses to display the target temperature for the economy mode and the comfort mode, respectively.
  • the user may indicate the target temperature (e.g., 1602) for the economy mode to the tool 324 or 1208 via up or down push buttons 1606.
  • the user may indicate the target temperature (e.g., 1604) for the comfort mode to the tool 324 or 1208 via up or down push buttons 1608.
  • the keypad 312 includes buttons 1610 and 1612 that the user may selectively actuate to cause the temperature manager tool 324 or 1208 to operate in the economy or comfort mode, respectively.
  • the temperature manager tool 324 or 1208 displays a black circle 1614 in the display panel 1602 or 1604 to indicate the corresponding mode (economy mode or comfort mode) in which the tool is operating.
  • the user may choose the operating mode of the tool 324 (e.g., heating mode or cooling mode) via switch 1616.
  • temperature manager too 32 may perform the processes ' eplete ⁇ rr Figs. -4- and 13, except that the target temperature received in step 406 is either the target temperature (e.g., 1602 or 1604) for the economy mode or the comfort mode, depending on which of these two modes was selected by the user.
  • the remote controller 1700 is operably configured to operate in the economy mode during one or more time intervals that may be set by the user.
  • the user actuates a button 1702 to indicate to the tool 324 or 1208 to operate during the one or more time intervals when the economy mode is selected by the user (e.g., via button 1610).
  • keypad 312 includes the following buttons to allow a user to enter the one or more timing intervals: numeric and punctuation buttons 1704 to allow a user to specify a beginning and ending time for a time interval; "am" or "pm” buttons 1706 to associate with the beginning or ending time for the time interval, a backspace button 1708 for changing a previous button entry (e.g., 1704, 1706, or 1710), a space insert button 1710 to indicate the end of the time interval entry and the beginning of the next time interval entry; and a done button 1712 to indicate to the tool 324 or 1208 that the one or more time intervals have been entered.
  • the tool 324 or 1208 may display the one or more time intervals on the display panel 1714.
  • the tool 324 or 1208 allows the user to clear the one or more time intervals displayed in display panel 1712 by re-pressing the button 1702.
  • temperature manager tool 324 or 1208 may perform the process depicted in Figs. 4 or 13, except that the target temperature received in step 406 is either the target temperature (e.g., 1602 or 1604) for the economy mode or the comfort mode.
  • the tool 324 or 1208 receives the target temperature for the economy mode during the one or more timing intervals (as reflected in display panel 1714) when selected via button 1702.
  • the remote controller 102 or remote sensing device 1400 may be affixed to a wall by means of a bracket that attaches securely to the wall and holds the remote controller or remote sensing device in place.
  • the remote controller may also be attached to the belt or garment of the user by means of a clip, so that the system monitors temperature in the precise location of the user.
  • the system 100 may be modified to monitor envir ⁇ nmienital conditions besides temperature.
  • the remote controller 102 may be modified to monitor humidity, and be used to control a plug-in dehumidifier.
  • thermostats that are built into the units (i.e., they do not include remote control thermostatic devices or remote temperature sensing devices). These individuals have difficulty controlling the temperature in areas that are remote from the actual unit.
  • the thermostat detects and controls temperature in the area near the unit; it cannot detect and control temperature at a distance, whether at a far point in the same room, or in a different room.

Abstract

A system (100) including a remote controller (102) and a slave switch device (104) is provided to control a load device (50) having a power plug (52). The remote controller (102) includes a target temperature input (326), a temperature sensor (306), a transmitter (302), and a temperature manager tool (324) operably connected) to the temperature sensor (306) and to the transmitter (302). The temperature manager tool (324) is configured to cause the transmitter (302) to send a signal based upon the target temperature and a sensed temperature. The slave switch device (104) has a receiver (704) operably configured to detect the signal from the transmitter (302), a plug (108) adapted to mate a power receptacle (62, 64), a receptacle (106) adapted to connect to the power plug (52) of the load device (50), a switch (708) operably disposed between the plug (52) and the slave switch device receptacle (106), and a slave switch driver (718) operably connected to the receiver (704) and to the switch (708), such that the driver (718) activates the switch (708) based on the signal from the transmitter (302).

Description

ME ODS AND SYSTEMS FOR REGULATING ROOM
TEMPERATURE WITH PLUG-IN HEATERS OR AIR CONDITIONERS
Cross-Reference To Related Application
This application claims the benefit of the filing date of U.S. Provisional Application No. 60/449779, entitled "Methods and Systems For Regulating Room Temperature With Plug-In Heaters Or Air Conditioners," filed on February 2, 2003, which is incorporated herein by reference to the extent allowable by law.
Field Of The Invention
This invention generally relates to systems for environmental control. In particular, this invention relates to a portable thermostat device and slave switch device to control a stand-alone appliance to regulate room temperature.
Background Of The Invention
Many individuals own stand-alone heaters or air conditioners that plug directly into a conventional wall outlet for A/C power and do not have a built-in thermostat. Individuals who own such devices have difficulty keeping the room temperature within a comfortable range. When heaters and air conditioners are left on for extended periods of time, they tend to push the temperature outside a desired range. Heaters, when left on, tend to make the room too hot. Air conditioners tend to make the room too cold. Some of these air conditioning or heating units allow the user to vary the output of the unit (from "low" to "high"), but this is imprecise and the problem remains.
Investing in a central heating and air conditioning system may solve these problems, but this is too expensive for many and not possible for those who rent an apartment or home.
Conventional remote switching systems allow a user to remotely but manually turn a load device, such as a lamp, toaster, or other small appliance, on and off. An example of such a conventional remote switching system is disclosed in Hoffman et al, U.S. Patent No. 5,239,205, entitled "Wireless multiple position switching system." The disclosed Hoffman device has a master switch that is plugged into a household outlet and a slave switch that is adapted to send a switching signal to the master swi c o c ange e s a e o e mas er sw c rom' to .- ,, m v ces versa, slave switch has a toggle switch that a user manually actuates in order to send the switching signal to the master switch for remote operation of an electrical appliance plugged in to the master switch. As a result, conventional remote switching systems, such as the Hoffman system, are not convenient to control a stand-alone heater or air conditioner because a person must turn the heater or air conditioner on and off using the Hoffman system every time the person desires to alter the room temperature.
Conventional remote thermostat systems exist for controlling central heating and air conditioning systems in a home or building. These conventional remote thermostat systems allow a person to remotely control a wall-mounted thermostat to control the temperature of the home or building. Examples of such conventional remote thermostat systems are disclosed in Cherry et al U.S. Patent No. 4,433,719, Ho et al U.S. Patent No. 5,833,134, and Morgan, U.S. Patent No. 6,394,359. But these patents do not offer a solution for controlling a conventional stand-alone air conditioner or heater.
Thus, there is a need for a system that allows owners or users of stand-alone heaters or air conditioners to control room temperature. Ideally, such a system would enable the user to control room temperature in specific areas that are distant from the heater or air conditioner.
Summary Of The Invention
Methods and Systems consistent with the present invention provide a portable temperature sensor linked through a remote controller to a slave switch device for controlling a plug-in stand-alone heater or air conditioner without any modification to the heater or air conditioner. The slave switch device separates a heater or an air conditioner from an electrical outlet. The slave switch device has a receptacle to operably connect the heater or air conditioner to the electrical outlet. The remote controller is configured to send a signal to the slave switch device to turn a switch in the slave switch device to on or off in association with a preset temperature or temperature range. The remote control device is able to prompt the slave switch to turn the heater or air conditioner on or off, so that room temperature where the remote control device is located is kept within the preset temperature or temperature range. er sys ems, me o s, ea ures, an a van ages- o e ptfiSfeϊit inven ion .w be or will become apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features, and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims.
Brief Description Of The Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an implementation of the present invention and, together with the description, serve to explain the advantages and principles of the invention. In the drawings:
Fig. 1 depicts a block diagram of a remote controlled switching system having a remote controller and a slave switch device suitable for practicing methods and implementing systems consistent with the present invention;
Fig. 2 depicts an exemplary view of the remote controlled switching system of Fig. 1 installed to operate a plug-in air conditioner in a room in accordance with the present invention;
Fig. 3 depicts a block diagram of the remote controller of the remote controlled switching system of Fig. 1;
Fig. 4 depicts a flow diagram of a process performed by the temperature manager tool of the remote controller to manage the operation of a plug-in heating or cooling load device;
Fig. 5 depicts signals sent by the temperature manager tool to the slave switch device of the remote controlled switching system of Fig. 1 in response to system mode and sensed temperature measurements;
Fig. 6 depicts an exemplary perspective view of the remote controller of the remote controlled switching system of Fig. 1;
Fig. 7 depicts a block diagram of the slave switch device of the remote controlled switching system of Fig. 1;
Fig. 8 depicts a flow diagram of a process performed by a slave switch driver of the slave switch device to manage the operation of a plug-in heating or cooling load device in response to the signals received from the remote controller; Jtng. y ep cts an exemp ary perspective v ew © andt er-em ό' fn€ftit o t e remote controller of the remote controlled switching system of Fig. 1;
Fig. 10 depicts a flow diagram of another process performed by the temperature manager tool of the remote controller of Fig. 9 to manage the operation of a plug-in heating or cooling load device;
Fig. 11 depicts an exemplary perspective view of another embodiment of the slave switch device of the remote controlled switching system of Fig. 1;
Fig. 12 depicts a block diagram of the slave switch device of Fig. 11;
Fig. 13 depicts a flow diagram of the process performed by a temperature manager tool of the slave switch device in Fig. 11;
Fig. 14 depicts a block diagram of another embodiment of the remote controller operably configured to operate with the slave switch device in Fig. 11;
Fig. 15 depicts a flow diagram of the process performed by a signal generating tool in the remote controller of Fig. 14;
Fig. 16 depicts an exemplary perspective view of another embodiment of the remote controller in Fig. 1, where the remote controller has an economy mode selection and a comfort mode selection; and
Fig. 17 depicts an exemplary perspective view of another embodiment of the remote controller in Fig. 1, where the remote controller is capable of receiving a time range for operating in the economy mode.
Detailed Description Of The Invention
Methods and systems consistent with the present invention provide a remote controlled switching system 100 that includes a portable remote controller 102 and a slave switch device 104. The slave switch device 104 is operably configured to control power flow between a load device 50, such as a stand-alone heater or air conditioner, and a wall outlet 60. The slave switch device 104 includes a receptacle 106 adapted to receive an A/C power plug 52 of the load device 50, and a plug 108 adapted to mate a receptacle 62 or 64 of the wall outlet 60. In one implementation discussed in detail below, the portable remote controller 102 has a temperature sensor (See 306 of Fig. 3) and a transmitter (See 302 of Fig. 3). In this implementation, the portable remote controller 102 is operably configured to monitor or read the empera ure sensor an o rigger e ransm er o seiϊ - a-si na . .. as shown in Fig. 1 to operate the slave switch device 104 so that the load device 50 is automatically switched on and off to maintain a predefined target temperature in the room where the remote controller 102 is located.
Fig. 2 depicts an exemplary view of the remote controlled switching system 100 installed to operate a plug-in air conditioner 200 in a room in accordance with the present invention. As shown in Fig. 2, the load device may be a conventional standalone air conditioner 200 that is adapted to fit into a window (not shown) in the room. The plug 108 of the slave switch device 104 is connected to the wall outlet 60 and the plug 52 of the air conditioner 200 is connected to the slave switch device 104. The remote controller 102, which may be located across the room, senses temperature and sends a signal 110 to the slave switch device 104 to control the air conditioner 200.
The remote controller 102 is a portable, handheld device that, as shown in Fig. 3, includes a transmitter 302, a temperature controller 304, a temperature sensor 306, and a power source 308. The temperature sensor 306 and the transmitter 302 are each operably connected to the temperature controller 304. The transmitter 302 may be a RF transmitter or infrared transceiver that is operably configured to send a signal 110 to the slave switch device 104 in response to a command or signal from the temperature controller 304. The temperature sensor 306 may employ a thermostat, a thermister, or other known temperature sensing element. The temperature sensor 306 may continuously provide the sensed temperature reading to the temperature controller 304 or periodically provide the sensed temperature reading when accessed or read by the temperature controller 304.
The power source 308 is operably connected to the transmitter 302, the temperature controller 304 and the temperature sensor 306 to supply each with operating power, (e.g., 12 V battery power). It is contemplated that the power source 308 may have an A/C power plug and transformer (not shown in figures) to connect to any conventional home power wall outlet. The power source 308 supplies sufficient power to the transmitter 302 to transmit signals to the slave switch device 104 over a distance of 2-3 rooms or approximately 50 feet, preferably communicating at high-level frequencies that would pass through a barrier or wall. In order to keep the energy demand low, and preserve the life of the power source (e.g., battery), the operation of the remote controller 102 is configured to operate with a low duty cycle. As described below, the temperature controller 304 periodically monitors the empera ure an ransmi s signa s o e s ave swi c evice a -wi e y-spa intervals such as every 5 minutes.
The temperature controller 304 may include a processor 310 (such as any known computer central processing unit or CPU), an input keypad 312, a display 314, a memory 316, a secondary storage 318, a timer 320, and a control panel or I/O interface 322. The memory 316 stores a temperature manager tool 324, which (along with other tools or drivers described herein) may be called up by the CPU 310 from memory 316 as directed by the CPU 310 to perform processes as described hereinbelow.
As described in further detail below, the temperature manager tool 324 may receive a target temperature from a user. Based on the target temperature and a sensed temperature received from the temperature sensor 306, the temperature manager tool 324 may send a signal to the slave switch device 104 to cause the load device 50 to operate in relation to the target temperature.
The temperature manager tool 324 is operably configured to operate in a heating or a cooling mode. The temperature manager tool 324 receives, via keypad 312 or I/O 322, temperature setting information such as the target temperature, or a target temperature range (e.g., target upper and lower temperatures). The temperature controller may configure the timer 320 or the timer 320 may be preset to periodically (e.g., every 5 minutes) send an activate signal to the temperature manager tool 324 such that the temperature manager tool 324 is prompted to compare the target temperature to the sensed temperature from the temperature sensor 306 based on the operating mode. The tool 324 determines whether the current or sensed temperature is less than the target temperature (if in the heating mode) or more than the target temperature (if in the cooling mode). Based on the target temperature and sensed temperature, the temperature manager tool 324 causes the transmitter 302 to send either an ON or OFF signal to the slave switch device 104 as discussed in further detail below.
Fig. 4 depicts a flow diagram illustrating an exemplary process performed by the temperature manager tool 324. Initially, the temperature manager tool 324 receives an operating mode input that the identifies whether the temperature controller 304 is to operate in a heating or a cooling mode. (Step 402). The tool 324 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 608 of Fig. 6). ex , e empera ure manager oo receives a arge @mpemtur »v» a<. s€sa' keypad 312, I/O interface 322, or a preset value 326 stored in memory 316 or in secondary storage 318. (Step 404). The tool 324 then receives a sensed or current temperature via temperature sensor 306. (Step 406).
After receiving the sensed temperature, the temperature manager tool 324 determines whether the sensed temperature is less than the target temperature (if in heating mode) or whether the sensed temperature is greater than the target temperature (if in cooling mode). (Step 408). If the sensed temperature is less than the target value (if in a heating mode) or more than the target value (if in cooling mode), the tool 324 prompts the transmitter 302 to send an ON signal to the slave switch device to activate the load device. (Step 410). If the sensed temperature is more than the target value (if in a heating mode) or less than the target value (if in cooling mode), the tool 324 prompts the transmitter 302 to send an OFF signal to deactivate the load device. (Step 412). After prompting the transmitter to send the ON signal or OFF signal, the temperature manager tool 324 ends processing.
When the system 100 is in a cooling mode, the slave switch device 102 may be operably connected to a load device 50 that cools the surrounding environment such as an air conditioner. When the system 100 is in a heating mode, the slave switch device 104 may be operably connected to a load device 50 that heats the surrounding environment such as a coil heater. By performing the process depicted in Fig. 4, the temperature manager tool 324 may insure that the room in which the remote controller 102 is located does not become too hot or too cold in accordance with the operating mode (e.g., heating or cooling mode) and the target temperature.
In one implementation, the temperature manager tool 324 may also be operably configured to maintain the sensed temperature within a predefined tolerance 328, such as +/- 3 degrees, of the target temperature. The predefined tolerance 328 may be stored in memory 316 or secondary storage 318. A user may indicate the predefined tolerance 328 to the temperature manager tool 324 via keypad 312 or I/O interface 322. When the system 100 is operating, if the room has already become cool enough (if operating in the cooling mode) or warm enough (if operating in the heating mode) through the operation of the system 100 such that the sensed temperature exceeds the target temperature relative to the predefined tolerance 328, the temperature manager tool 324 may send another signal to the slave switch device o cause e oa evice o urn o so a e empera sense y © temperature sensor begins to approach the target temperature.
Fig. 5 depicts signals that may be sent by the temperature manager tool 324 to the slave switch device 102. If the system 100 is set to the heating mode (via the dedicated sliding button switch 608 on the remote controller 102, or through the user keypad 312, or I/O interface 327) and the sensed temperature is below the target temperature, then the temperature manager tool 324 causes the transmitter 302 to send an ON signal which may be conveyed by a first voltage level, a first frequency, or a first encoded value, such as "1." If the system 100 is set to the heating mode and the sensed temperature is above the target temperature, temperature manager tool 324 causes the transmitter 302 to send an OFF signal which may be conveyed by a second voltage level, a second frequency, or a second encoded value, such as "0." The transmitter 302 may be operably configured to use any known encoding technique (such as described in U.S. Patent No. 4,433,719 or U.S. Patent No. 6,394,359) to generate the first and second encoded values and to transmit the respective first or second encoded value at a frequency that is detectable by a receiver (See 702 of Fig. 7) of the slave switch device 102. For example, the first encoded value for conveying an "ON" signal may be encoded in a pulse train as a "1" and the second encoded value for conveying an "OFF" signal may be encoded in a pulse train as a "0." The first or second encoded value may then by modulated by the transmitter 302 at a frequency that the receiver 702 of the slave switch device 102 is tuned to detect. As discussed below, the slave switch device 102 may be operably configured to decode the first and second encoded values as the "ON signal" and the "OFF signal," respectively.
As shown in Fig. 5, if the system 100 is set to a cooling mode and the sensed temperature is below the target temperature, then the temperature manager tool 324 causes the transmitter 302 to send an OFF signal. If the system 100 is set to a cooling mode and the sensed temperature is above the target temperature, the temperature manager tool 324 causes the transmitter 302 to send an ON signal.
Turning to Fig. 6, an exemplary perspective view of the remote controller 102 is shown, hi this implementation, the keypad 312 may include a set of push buttons 602 and 604. Push button 602 is operably configured to cause the temperature manager tool 324 to increment the target temperature by a predefined number, such as one. Push but on s opera y con gure to cause t e tempera ure manager too 324 to decrement the target temperature by the predefined number.
In the implementation shown in Fig. 6, the display 314 is an electronic display panel 606 that the temperature manager tool 324 uses to display the target temperature for a user to view and adjust via push buttons 602 and 604. As discussed above, the remote controller may include a dedicated switch 608 that a user may toggle or slide between heating and cooling settings to indicate the operating mode as the heating mode or the cooling mode to the temperature manager tool 324.
Fig. 7 depicts a block diagram of the slave switch device 102 of the remote controlled switching system 100. As shown in Fig. 7, the slave switch device may include an antenna 702, a receiver 704 coupled to the antenna 702, a slave controller 706 operably connected to the receiver 704, and a switch 708 that is operably connected to the slave controller and adapted to control power flow from the wall outlet 62 or 64 to the load device 50 when a closure signal is received from the slave controller 706.
The receiver 702 is preferably tuned to the transmitter of the remote controller 102, so as to effectively detect a signal sent by the temperature manager tool 324 via the transmitter 302. The receiver 702 may include an amplifier and decoder to process the signal sent via the transmitter 302. In one implementation, the receiver 702 includes a decoder 710 that uses known decoding techniques (such as described in U.S. Patent No. 4,433,719 or U.S. Patent No. 6,394,359) to identify the first encoded value sent from the transmitter as an "ON" signal and to identify the second encoded value sent from the transmitter as an "OFF" signal.
The slave controller 704 may include a processor 712 (such as any known microprocessor or CPU), a memory 714, and a secondary storage 716. The memory 712 stores a slave switch driver 718, which (along with other tools or drivers described herein) may be called up by the CPU 712 from memory 714 as directed by the CPU 712 to perform processes as described hereinbelow.
The slave switch driver 718 is operably configured to cause the switch 708 to be activated (e.g., switch 708 is closed) or to be deactivated in response to receiving an "ON signal" or an "OFF signal," respectively, from the receiver 702. A power source via wall outlet 62 or 64 is operably connected to the switch 708, slave controller 706, and receiver 704 to supply each with operating power. When the swi c is c ose , e swi c opera y connec s e oa evice - ' e-.'g., ea er or air conditioning unit) to the power source via wall outlet 62 or 64.
Turning to Fig. 8, a flow diagram is depicted illustrating an exemplary process performed by the slave switch driver 718 to manage the operation of the load device 50 in response to "ON" and "OFF" signals received from the remote controller 102. The slave switch driver may continually monitor or receive the signals sent by the temperature manager tool 324 via the transmitter 302 of the remote controller 102.
Initially, the slave switch driver 718 receives a signal from the remote controller. (Step 802). The slave switch driver 718 determines whether the signal is an ON signal. (Step 804). If the signal is an ON signal, the slave switch driver 718 then detects whether the switch 708 is activated. (Step 806). In one implementation, the switch 708 may be a normally opened switch, such that the switch 708 is closed when activated. In another implementation, the switch 708 may be a normally closed switch, such that the switch 708 is opened when activated. If the switch 708 is not activated and the switch 708 is a normally opened switch (e.g., switch 708 is currently opened), then the slave switch driver 718 activates the switch 708. (Step 808) Alternatively, if the switch 708 is activated and the switch 708 is a normally closed switch (e.g., switch 708 is currently opened), then the slave switch driver 718 deactivates the switch 708 so that the switch 708 is closed and the load device 50 is operably connected to the power source. If the switch 708 is activated and the switch 708 is a normally opened switch, or if the switch 708 is not activated and the switch 708 is a normally closed switch, the slave switch driver 718 ends processing as switch 708 is already closed or ON (e.g., load device 50 is operably connected to the power source).
If the slave switch driver determines that the signal is not an ON signal (e.g., an OFF signal), the slave switch driver 718 then detects whether the switch 708 is deactivated. (Step 810). If the switch 708 is not deactivated and the switch 708 is a normally opened switch (e.g., switch 708 is currently closed), then the slave switch driver 718 deactivates the switch 708. (Step 812) Alternatively, if the switch 708 is deactivated and the switch 708 is a normally closed switch (e.g., switch 708 is currently closed), then the slave switch driver 718 deactivates the switch 708 so that the switch 708 is opened and the load device 50 is operably disconnected from the power source. If the switch 708 is deactivated and the switch 708 is a normally opened switch, or if the switch 708 is not deactivated and the switch 708 is a normally c ose sw tc , t e s ave sw tc ver 718 en s process ng as sw tc 708 s alrea y opened or OFF (e.g., load device 50 is operably disconnected from the power source).
Turning to Fig. 9, an exemplary perspective view of another embodiment of the remote controller of the remote controlled switching system 100 is depicted. As shown in Fig. 9, the user may indicate a temperature range (e.g., an upper and a lower target temperature) to the remote controller 900, rather than a single target temperature. In this implementation, the display 314 comprises electronic display panels 902 and 904 that the temperature manager tool 324 uses to display the upper and lower target temperatures. Keypad 312 includes push button sets 906 and 908 that allow a user to cause the temperature manager tool 324 to adjust the upper and lower target temperatures, respectively. As discussed above, the user may toggle or slide the dedicated switch 910 between heating and cooling settings to indicate the operating mode as the heating mode or the cooling mode to the temperature manager tool 324.
Fig. 10 depicts a flow diagram illustrating another exemplary process performed by the temperature manager tool 324 of the remote controller 900 to control the slave switch device 104 such that the temperature near the remote controller is maintained within the upper and the lower temperature target range. Initially, the temperature manager tool 324 receives an operating mode input that identifies whether the temperature controller 304 is to operate in a heating or a cooling mode. (Step 1002). The tool 324 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 910 of Fig. 9).
Next, the temperature manager tool 324 receives an upper target temperature and a lower target temperature. (Step 1004). The tool 324 may receive the upper and lower target temperatures via push button sets 904 and 906. The tool 324, however, may receive the upper and lower target temperatures via user keypad 312, I/O interface 322, or a preset value (e.g., in this implementation target temperature 326 may include an upper and lower target temperatures) stored in memory 316 or in secondary storage 318. The tool 324 then receives a sensed or current temperature via temperature sensor 306. (Step 1006).
After receiving the sensed temperature, the temperature manager tool 324 deteπriines whether the operating mode is the heating mode (or the cooling mode). (Step 1008). If the operating mode is not the heating mode (i.e., operating in the coo ng mo e , e oo t en eterm nes w et ef e" sense temperature is a ove the upper target temperature. (Step 1010). If the sensed temperature is above the upper target temperature, the temperature manager tool 324 sends an ON signal. (Step 1012) If the sensed temperature is not above the upper target temperature, the tool 324 determines whether the temperature is below the lower target temperature. (Step 1014). If the sensed temperature is below the lower target temperature, the tool 324 sends an OFF signal. (Step 1016) If the sensed temperature is not below the lower target temperature, the tool 324 ends processing without sending a signal to alter the operation of the slave switch device 104. Thus, when the system 100 is operating in the cooling mode, the temperature manager tool 324 maintains the operation of the load device 50 (e.g., an air conditioning unit) such that the temperature in and around the remote controller 102 is within the target temperature range or between the lower and upper target temperatures.
If the operating mode is the heating mode, the tool 324 then determines whether the sensed temperature is below the lower target temperature. (Step 1018). If the sensed temperature is below the lower target temperature, the temperature manager tool 324 sends an ON signal. (Step 1020) If the sensed temperature is not below the lower target temperature, the tool 324 determines whether the temperature is above the upper target temperature. (Step 1022). If the sensed temperature is above the upper target temperature, the tool 324 sends an OFF signal. (Step 1024). If the sensed temperature is not above the upper target temperature, the tool 324 ends processing without sending a signal to alter the operation of the slave switch device 104. Thus, when the system 100 is operating in the heating mode, the temperature manager tool 324 maintains the operation of the load device 50 (e.g., a heating unit) such that the temperature in and around the remote controller 102 is within the target temperature range or between the lower and upper target temperatures.
In another embodiment, the spacing of the intervals at which the remote controller 102 or 900 sends messages to the slave switch is reduced, for example, from 5 minutes to 2 minutes. This insures that the temperature in and around the remote controller 102 and 900 stays within a more precise range. If the power source 308 is a battery, this implementation may tend to drain the power source 308, but the remote controller 102 or 900 may be built to accommodate more or larger batteries, or be designed with plug-in or rechargeable features. In another embodiment, the remote controller 1*02 of θθϋ may be c©Mgu#ed; t& continuously monitor temperature and continuously send signals back to the slave switch device 104. The slave switch device 104 includes a timer, such as timer 320, that prompts the slave switch driver 718 to check for signals periodically (e.g., every 5 minutes).
Turning to Fig. 11, this figure depicts an exemplary perspective of another embodiment of the slave switch device 1100. In this embodiment, the temperature controller 304 is incorporated into the slave switch device 1100. In this embodiment, the user inputs desired temperature settings into the slave switch device 1100. Fig. 12 depicts a block diagram of the slave switch device 1100. As shown in Fig. 12, the slave switch device 1100 includes a receiver 1202, an integrated temperature and slave controller 1204 operably connected to the receiver 1202 that has a decoder 710, and a switch 1206 operably connected to the temperature and slave controller 1204. These elements (1202, 1204, and 1206) are operably connected to the power source (e.g., wall outlet 60). The temperature and slave controller 1204 includes a CPU 310, keypad 312, a display 314, a memory 316, a secondary storage 318, a timer 320, and an input/output interface 322. The memory 316 includes both a temperature manager tool 1208 (such as tool 324) and a slave switch driver 1210 (such as driver 718).
Fig. 13 depicts a flow diagram of the process performed by a temperature manager tool 1208 of the slave switch device 1100. Initially, the temperature manager tool 1208 receives an operating mode input that the identifies whether the temperature controller 304 is to operate in a heating or a cooling mode. (Step 1302). As discussed above, the tool 1208 may receive the heating or cooling mode input via user keypad 312, I/O interface 322, or dedicated sliding button switch (e.g., 1108 of Fig. 11).
Next, the temperature manager tool 1208 receives a target temperature via user keypad 312, I/O interface 322, or a preset value 326 stored in memory 316 or in secondary storage 318. (Step 1304). The tool 1208 then receives and decodes a signal for the sensed temperature. (Step 1306). As discussed in further detail below, the tool 1208 receives the signal (that includes an encoded sensed temperature ) from the remote controller 1400 depicted in Fig. 14, which functions as a remote temperature sensing device in this implementation.
After receiving and decoding the sensed temperature, the temperature manager tool 1208 determines whether the sensed temperature is less than the target temperature (if in heating mode) or whether the sensed temperature is- greater than th© target temperature (if in cooling mode). (Step 1308). If the sensed temperature is less than the target value (if in a heating mode) or more than the target value (if in cooling mode), the tool 1208 sends an ON signal to the slave switch device to activate the load device. (Step 1310). If the sensed temperature is more than the target value (if in a heating mode) or less than the target value (if in cooling mode), the tool 1208 sends an OFF signal to deactivate the load device. (Step 1312). In this implementation, the ON and OFF signal may be sent by the tool 1208 to the slave device driver via a command or a dedicated connection. After sending the ON signal or OFF signal, the temperature manager tool 1208 ends processing. hi this embodiment, the remote controller 1400 depicted in Fig. 14 may not include the temperature manager tool 324. Instead, the remote controller 1400 may be operably configured to monitor or sense temperature in or around the remote controller 1400 and to send the sensed temperature in an encoded signal to the slave switch device 1100 for processing. As shown in Fig. 14, the remote controller 1400 includes a transmitter 1402, a temperature signal generator 1404 that is operably connected to the transmitter 1402, and a power source 1408, such as a battery, that is operably connected to both the transmitter 1402 and the temperature signal generator 1404. The temperature signal generator 1404 includes a CPU 1406, a timer 1408, a secondary storage 1410, a temperature sensor 1412, and memory 1414. The memory 1414 holds a signal generating tool 1416, which may be called up by the CPU 1406 from memory 1414 as directed by the CPU 1406 to perform operations as described hereinbelow. The signal generating tool 1416 may configure the timer 1408, or the timer 1408 may be preset to periodically (e.g., every 5 minutes) send an activate signal to the signal generating tool 1416 to prompt the signal generating tool to receive, encode, and send a sensed temperature to the slave switch device 1100.
Turning to Fig. 15, that figure depicts a flow diagram of the process performed by a signal generating tool 1416 in the remote controller 1400. Initially, the signal generating tool 1416 determines whether a prompt to check the temperature has been received. (Step 1502). If a prompt to check the temperature has been received, the signal generating tool 1416 receives a sensed temperature for the temperature sensor 1412. (Step 1504) The signal generating tool then encodes the sensed temperature into a digitized signal detectable by the receiver 1202 decoder 710 of slave switch device 1100. (Step 1506) Next, the signal generating tool sends the encoded signal via the transmitter 1402 to the slave switch device for focessing by the temperatur© and slave controller 1204. (Step 1508). As discussed above, the transmitter 1402 of the remote controller 1400 in Fig. 14 may send the encoded signal to the receiver 1202 of the slave switch device 1100 using any known techniques, such as RF or infrared modulation, detectable by the receiver 1202. After sending the encoded signal to the slave switch 1100 or if a prompt to check the temperature has not been received, the signal generating tool ends processing.
In another embodiment, the remote controller allows the user to input two temperature settings: one for an "economy" mode which, over a period of time, requires less power (allowing higher room temperatures when in the cooling mode, or lower temperatures when in the heating mode) and one for a "comfort" mode that requires more power to cool or heat the room but that provides a more comfortable environment that more nearly approximates an ideal temperature such as 72 degrees. The "economy" mode may be used when the individual plans to be away from home, but wants to keep the temperature relatively close to the desired temperature in order minimize overall energy costs and avoid coming home to an extremely hot or cold environment.
Fig. 16 depicts an exemplary perspective view of another embodiment of the remote controller 1600 that may be used in the system 100. In this embodiment, temperature manager tool 324 or 1208 may operate in an economy or a comfort mode in conjunction with either the heating or cooling mode of operation. As shown in Fig. 16, the display 314 includes display panels 1602 and 1604 that the temperature manager tool 324 and 1208 uses to display the target temperature for the economy mode and the comfort mode, respectively. The user may indicate the target temperature (e.g., 1602) for the economy mode to the tool 324 or 1208 via up or down push buttons 1606. Similarly, the user may indicate the target temperature (e.g., 1604) for the comfort mode to the tool 324 or 1208 via up or down push buttons 1608. In this implementation, the keypad 312 includes buttons 1610 and 1612 that the user may selectively actuate to cause the temperature manager tool 324 or 1208 to operate in the economy or comfort mode, respectively. The temperature manager tool 324 or 1208 displays a black circle 1614 in the display panel 1602 or 1604 to indicate the corresponding mode (economy mode or comfort mode) in which the tool is operating. As previously discussed, the user may choose the operating mode of the tool 324 (e.g., heating mode or cooling mode) via switch 1616. In this embodiment, temperature manager too 32 may perform the processes ' eplete ϊrr Figs. -4- and 13, except that the target temperature received in step 406 is either the target temperature (e.g., 1602 or 1604) for the economy mode or the comfort mode, depending on which of these two modes was selected by the user.
In another embodiment depicted in Fig. 17, the remote controller 1700 is operably configured to operate in the economy mode during one or more time intervals that may be set by the user. In this embodiment, the user actuates a button 1702 to indicate to the tool 324 or 1208 to operate during the one or more time intervals when the economy mode is selected by the user (e.g., via button 1610). In addition, keypad 312 includes the following buttons to allow a user to enter the one or more timing intervals: numeric and punctuation buttons 1704 to allow a user to specify a beginning and ending time for a time interval; "am" or "pm" buttons 1706 to associate with the beginning or ending time for the time interval, a backspace button 1708 for changing a previous button entry (e.g., 1704, 1706, or 1710), a space insert button 1710 to indicate the end of the time interval entry and the beginning of the next time interval entry; and a done button 1712 to indicate to the tool 324 or 1208 that the one or more time intervals have been entered. The tool 324 or 1208 may display the one or more time intervals on the display panel 1714. In one implementation, the tool 324 or 1208 allows the user to clear the one or more time intervals displayed in display panel 1712 by re-pressing the button 1702. In this embodiment, temperature manager tool 324 or 1208 may perform the process depicted in Figs. 4 or 13, except that the target temperature received in step 406 is either the target temperature (e.g., 1602 or 1604) for the economy mode or the comfort mode. When operating in the economy mode, the tool 324 or 1208 receives the target temperature for the economy mode during the one or more timing intervals (as reflected in display panel 1714) when selected via button 1702.
In any of the embodiments of this invention, the remote controller 102 or remote sensing device 1400 may be affixed to a wall by means of a bracket that attaches securely to the wall and holds the remote controller or remote sensing device in place. The remote controller may also be attached to the belt or garment of the user by means of a clip, so that the system monitors temperature in the precise location of the user. The system 100 may be modified to monitor
Figure imgf000019_0001
envirønmienital conditions besides temperature. For example, the remote controller 102 may be modified to monitor humidity, and be used to control a plug-in dehumidifier.
A different implementation of this invention applies to individuals who own plug-in heating or air-conditioning units that include thermostats that are built into the units (i.e., they do not include remote control thermostatic devices or remote temperature sensing devices). These individuals have difficulty controlling the temperature in areas that are remote from the actual unit. The thermostat detects and controls temperature in the area near the unit; it cannot detect and control temperature at a distance, whether at a far point in the same room, or in a different room. By placing such units on an automatic or permanently ON setting (disabling the thermostat in the unit) and connecting these units to the system described in this invention, the user may more effectively control room temperature where the user is presently located.
Although aspects of the present invention are depicted as being stored in memory 316 or memory 712 or memory 1220 or memory 1414, one skilled in the art will appreciate that all or part of systems and methods consistent with the present invention may be stored on or read from other computer-readable media, for example, secondary storage devices such as hard disks, floppy disks, CD-ROMs, or plug-in disks; a signal received from a network such as the Internet; or other forms of ROM or RAM either currently known or later developed. Furthermore, although specific components of the remote controlled switching system 100 are described, one skilled in the art will appreciate that an image processing system suitable for use with methods and systems consistent with the present invention may include additional or different components.
While various embodiments of the present invention have been described, it will be apparent to those of skill in the art that many more embodiments and implementations are possible that are within the scope of this invention. Accordingly, the present invention is not to be restricted except in light of the attached claims and their equivalents.

Claims

CLAIMSWhat is claimed is:
1. A system for controlling a load device having a power plug, the system comprising: a remote controller having an input for receiving a target temperature, a temperature sensor, a transmitter, and a temperature manager tool operably connected to the temperature sensor and the transmitter, the temperature manager tool being configured to cause the transmitter to send a signal based upon the target temperature and a sensed temperature from the temperature sensor; and a slave switch device having a receiver operably configured to detect the signal from the remote controller transmitter, a plug adapted to mate a home power receptacle, a receptacle adapted to connect to the power plug of the load device, a switch operably disposed between the plug and receptacle of the slave switch device, and a slave switch driver operably comiected to the receiver and the switch such that the slave switch driver activates the switch based on the signal received from the remote controller transmitter.
2. The system of Claim 1, wherein the temperature manager tool maintains the sensed temperature within a predefined tolerance of the target temperature.
3. The system of Claim 1, wherein the remote controller further comprises an operating mode switch operable to cause the temperature manager tool to operate in one of a heating mode and a cooling mode.
4. The system of Claim 3, wherein the temperature manager tool causes the transmitter to send the signal when the sensed temperature is less than the target temperature and the temperature manager tool is operating in the heating mode.
5. The system of Claim 4, wherein the temperature manager tool causes the transmitter to send another signal when the sensed temperature is more than the target temperature and a predefined tolerance, and the other signal causes the slave switch driver to deactivate the switch.
6. The system of Claim 3, wherein the temperature manager tool causes the transmitter to send a signal when the sensed temperature is more than the target temperature and the temperature manager tool is operating in the cooling mode.
7. The system of Claim 6, wherein the temperature-'manage'rtooi' causes' the transmitter to send another signal when the sensed temperature is less than the target temperature and a predefined tolerance, and the other signal causes the slave switch driver to deactivate the switch.
8. The system of Claim 1, wherein the target temperature is an upper target temperature, the remote controller has a second input for receiving a lower target temperature, and the temperature manager tool is configured to cause the transmitter to send the signal when the sensed temperature a range defined by the upper target temperature and the lower target temperature.
9. The system of Claim 8, wherein the temperature manager tool is operably configured to operate in a heating mode and to cause the transmitter to send the signal when the sensed temperature is below the lower target temperature.
10. The system of Claim 9, wherein the temperature manager tool causes the transmitter to send another signal when the sensed temperature is above the upper target temperature, and the other signal causes the slave switch driver to deactivate the switch.
11. The system of Claim 8, wherein the temperature manager tool is operably configured to operate in a cooling mode and to cause the transmitter to send the signal when the sensed temperature is above the upper target temperature.
12. The system of Claim 11, wherein the temperature manager tool causes the transmitter to send another signal when the sensed temperature is below the lower target temperature, and the other signal causes the slave switch driver to deactivate the switch.
13. A system for controlling a load device having a powerpltrg','" the- system' comprising: a remote controller including a temperature sensor, a transmitter, and a temperature signal generator operably connected to the temperature sensor and to the transmitter, the temperature signal generator being operably configured to encode a sensed temperature from the temperature sensor and to cause the transmitter to send the encoded sensed temperature; and a slave switch device including an input for receiving a target temperature, a receiver having a decoder operably configured to detect the encoded sensed temperature sent by the transmitter, a temperature manager tool operably connected to the receiver, a plug adapted to mate a home power receptacle, a receptacle adapted to connect to the power plug of the load device, a switch operably disposed between the plug and receptacle of the slave switch device, and a slave switch driver operably connected to the temperature manager tool and the switch, the temperature manager tool being configured to cause the transmitter to send a signal to the slave switch driver based upon the target temperature and a sensed temperature from the temperature sensor such that the slave switch driver activates the switch based on the signal.
14. The system of Claim 13, wherein the temperature manager tool maintains the sensed temperature within a predefined tolerance of the target temperature.
15. The system of Claim 13, wherein the slave switch device further comprises an operating mode switch operable to cause the temperature manager tool to operate in one of a heating mode and a cooling mode.
16. The system of Claim 15, wherein the temperature manager tool sends the signal when the sensed temperature is less than the target temperature and the temperature manager tool is operating in the heating mode.
17. The system of Claim 16, wherein the temperature manager tool sends another signal to the slave switch driver when the sensed temperature is more than the target temperature and a predefined tolerance, and the other signal causes the slave switch driver to deactivate the switch.
18. The system of Claim 15, wherein the temperature manager tool sends the signal when the sensed temperature is more than the target temperature and the temperature manager tool is operating in the cooling mode.
19. The system of Claim 18, wherein t e" temperature "manager tϋorsenαs another signal to the slave switch driver when the sensed temperature is less than the target temperature and a predefined tolerance, and the other signal causes the slave switch driver to deactivate the switch.
PCT/US2003/013152 2003-02-24 2003-04-29 Methods and systems for regulating room temperature with plug-in heaters or air conditioners WO2004077188A1 (en)

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