CA2109075A1 - Arrangement for the transfer of control commands in an apparatus or a machine operated from the mains - Google Patents
Arrangement for the transfer of control commands in an apparatus or a machine operated from the mainsInfo
- Publication number
- CA2109075A1 CA2109075A1 CA002109075A CA2109075A CA2109075A1 CA 2109075 A1 CA2109075 A1 CA 2109075A1 CA 002109075 A CA002109075 A CA 002109075A CA 2109075 A CA2109075 A CA 2109075A CA 2109075 A1 CA2109075 A1 CA 2109075A1
- Authority
- CA
- Canada
- Prior art keywords
- working means
- control command
- control
- arrangement according
- wire
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
- H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
- H02J13/0001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
Abstract
An arrangement in an apparatus or a machine operated from the mains for the transfer of control commands to at least one working means (24) in the apparatus or machine, e.g. a motor or the like, via a wire (13) also used for the power supply to said working means. The arrangement comprises a control unit (10) provided for creating a control command by suppressing, in a predetermined order, at least part of one or several consecutive half-periods of a predetermined polarity of the supply voltage. Moreover, the arrangement comprises a slave unit (11) operating in response to the control command transmitted to activate the working means (24).
The control unit (10) has such a design that before a control command is transmitted the control unit operates to shortly disconnect the supply voltage on the wire (13) for a period of time required for the current in the working means (24) to decline essentially to zero.
The control unit (10) has such a design that before a control command is transmitted the control unit operates to shortly disconnect the supply voltage on the wire (13) for a period of time required for the current in the working means (24) to decline essentially to zero.
Description
WO93/18~8 ~ S~ PCT/SE93/00168 ~ ~9~7~
Arrangement for the transfer of control commands in an aP~aratus or a machine operated from the mains The pre~ent invention pertains to an arrangement in an apparatu~ or a machine operated from the mains for the transfer of control commands to at least one working means in said apparatus or machine, e.g. a motor or the like, via a wire al80 used for the power supply to ~aid working means, the arrange-ment comprising a control unit provided for creating a control command by suppressing, in a predetermined order, at least part of one or ~everal consecutive half-periods of a predetermined - pol~rity of the supply voltage, and a slave unit operating in response to the control command transmitted to activate the working mean~
In the U.S. patent publications Nos. 4,007,458 and 4,131,832 there are disclosed arrangements of the kind descri-bed. He!re, the arrangements have been used in irrigation sy~temq including a great number of valves and the object has been to ~onvey out, in a simple way by means of the power supply ~able, control commands for the control of the different valves.
Ii an arrangement of the kind des¢ribed is to be used in an apparatus or a machine having several working means with inductive properties, such as motors, difficulties have - appeared for the slave'unit to interprete the control command i ~ ` if being'sent' while any such inductive'working means is '' ~ ' opèrating. The;change in a number of half-cycles, obtained by . ~ ` ! -25 suppre6sing of at least^'part of the-cycle,- is~ counteracted by '' ~ ' the~repugnance of'the working means against changés and as a - '~;` ''result''the slave'unit will experience difficulties in unam~
. . .
-' ' ~'' biguously identifying'a control command being sent.
O ' '~ ' -' The !object of the invention is to remedy the drawback '' 30 indicated and to provide an arrangement of a desigh such that ¦ the control commands transmitted can be unambiyuously interpre-ted by the slave unit for the correct control of the working means to be operated. The object is achieved by an arrangement of the kind referred to above which is characterized by such a W093/18~8 ~ 2~-~9~7~ PCT/SE93/00168~
Arrangement for the transfer of control commands in an aP~aratus or a machine operated from the mains The pre~ent invention pertains to an arrangement in an apparatu~ or a machine operated from the mains for the transfer of control commands to at least one working means in said apparatus or machine, e.g. a motor or the like, via a wire al80 used for the power supply to ~aid working means, the arrange-ment comprising a control unit provided for creating a control command by suppressing, in a predetermined order, at least part of one or ~everal consecutive half-periods of a predetermined - pol~rity of the supply voltage, and a slave unit operating in response to the control command transmitted to activate the working mean~
In the U.S. patent publications Nos. 4,007,458 and 4,131,832 there are disclosed arrangements of the kind descri-bed. He!re, the arrangements have been used in irrigation sy~temq including a great number of valves and the object has been to ~onvey out, in a simple way by means of the power supply ~able, control commands for the control of the different valves.
Ii an arrangement of the kind des¢ribed is to be used in an apparatus or a machine having several working means with inductive properties, such as motors, difficulties have - appeared for the slave'unit to interprete the control command i ~ ` if being'sent' while any such inductive'working means is '' ~ ' opèrating. The;change in a number of half-cycles, obtained by . ~ ` ! -25 suppre6sing of at least^'part of the-cycle,- is~ counteracted by '' ~ ' the~repugnance of'the working means against changés and as a - '~;` ''result''the slave'unit will experience difficulties in unam~
. . .
-' ' ~'' biguously identifying'a control command being sent.
O ' '~ ' -' The !object of the invention is to remedy the drawback '' 30 indicated and to provide an arrangement of a desigh such that ¦ the control commands transmitted can be unambiyuously interpre-ted by the slave unit for the correct control of the working means to be operated. The object is achieved by an arrangement of the kind referred to above which is characterized by such a W093/18~8 ~ 2~-~9~7~ PCT/SE93/00168~
design of the control u~it that before a control command is transmitted the control unit operates to shortly disconnect the supply voltage on the wire for a period of tLme required for the current in the working means to decline essentially to zero. The invention characterized above is the subject matter of the appending claim 1. Preferred embodiments -have been included in tbe sub-claims.
The invention will now he described more in detail in connection with an embodiment with reference to the enclosed drawings, in which:
Fig. 1 shows a block diagram of the arrangement;
Fig. 2 schematically shows a control unit according to the invention;
Fig. 3 ~schematically show~ a slave uni~ having a working means connected to it; and Fig. 4 and 5 show diagram~ of waveforms of signals transferred ~between the control unit and the slave unit.
In the embodLment the invention is intended to be used in a dishwasher the main function and design of whlch being con-ventional. Accordingly, no deta.iled description of the dish-washer will be gi~en and said di~hwa~her will only be commented on in general term~ when needed. Hence, ~uch a machine may compri~e a dishwashing compartment supplied with water via a solenoid valve and drained of cleaning and rinsing liquid via a drainage pump! Further, in such machine a circulation pump is provided for the supply of cleaning and rinsing liquid to rotating spray-arms provided with holes and spraying liquid, in a conventional way, onto dish goods supported in basket~ in the dish-washing compartment. For the do~age of detergent there is provided a dosing device which via a~door, which can be opened by magnetic means, supplie6 a dose of powder from a dosage compartme~t covered by said door. Accordingly, the various ,, . .. ~.. ... ,. . :
working means which in this case have to be~controlled by a programmer are the circulation pump, the drain pump, the dosage device and the solenoid valve. Preferably, in this case the programmer i5 of the electronic type comprising a microproces-sor, a program memory and additional electronic components required.
In the following description the control components W093/18568 ! ' ~ 9 0 7 ~ PC~/SE93/00~68 _~ 3 concerned have been removed from the dishwasher together with one of the working means and these details are shown schemati-cally in the block diagram of fig. 1. Accordingly, the control arrangement comprises a control unit 10 and a slave unit 11 interconnected by a line 13, referred to as a bus line. In the line a triac switch 20 is connected by which the voltage to the slave unit 11 can be broken, either permanently or temporary when a control command is to be transmitted. A working means 24 is connected to the slave unit 11 via a triac switch 27. As ~hown in greater detail in fig. 2, the control unit consists of a microprocessor 14 which in a known way communlcates, via an address bus 15 and a data bus 16, with a program memory 17. Via terminals 18, ls the bus line is connected to a mains AC
network and via the triac switch 20 the bus line is connected to the slave unit 11. Said triac switch i~ controlled, via a driver circuit 21, from the microprocessor 14. ~n opto coupler 22 is u~ed to supply pha~e information from the ~upplied AC
volt~ge to the microprocessor. In the usual way the micropro-cessor is also connected to a clock pulse generator 23.
The mlcroprocessor 14 and the program memory 17 constitute an eleatronic programmer determlning the function of the connected machine, here the dishwa~her, ~aid programmer al~o controlling the activation of the different working means, here represented by the load 24, ~ee Fig. 3~ The last-mentioned figure shows the slave unit 11 which compri~es an electronic circuit 25 referred to as EP310 PAL Altera. ~he circuit has two inputs INl and IN2 of which IN1 is connected to a monostable ~ - ; flip-flop 26. The flip-$10p i~ triggered by each positiv~ half-I - period o~ the supply voltage generating pulses of a constant ¦ - 30 width-. ~he ~econd input I~2 of the circuit 25 i9 directly connected to the supply AC voltage and in a manner not dis-clo~ed in detail the circuit u~es the positive half- periods on the input IN2 to be compared with the pulses on the input INl in order to determlne the nature of the data information transferred, "1" or "0". The circuit 25 has a number of outputs Q0-Q4 to which the different loads are connected. In the example the only load 24 is connected to the output Q0 via a triac switch 27.
More or less sophisticated methods can ~e used in creating WO93/18568 ,. ~ PCT/SE93/00168 21~907~ 4 ~
a control command for activation or inactivation of one or several of a number of working means or loads. In a domestic appliance of the type dishwasher or laundry washing machin~ it is of great value, however, if codes are used which are as simple as possible. As a result the command for disconnection is equal to breaking of the voltage while the command for switching-on of a load i5 equal to a binary code activating the re~pective output o~ the circuit 25 in the slave unit. For activation of the outputs Q0-Q4 binary codes lOOOl, lOOlO, lOOll, lOlO0 and lOlOl are used where in each code the first "l" i~ a start ~it. In the diagram of Fig. 4 there is shown the waveform of the supply voltage transmitted on the bus line with a control command for the output Q0 included. Aacording to the ~ invention, first the voltage is broken for a time period sufficil3nt for all working means to ~e di~connected and all motor~ 1:o be standstill. Then the voltage is switched-on for a shorter period to have the condition of the slave unit ll stabilize. In the diagram this pha~e has been marked by the digit l. ~hen follows the control command it~elf which starts with a 3tart bit represented by a "l". The "l" is represented by a halfoperiod of the supply voltage ~uppressed during 50% of it~ duration whereas a "0" is represented by a full half-period. In addition to the ~tart bit, the control command compri~es iour additional bits and with re~pect to the output Q0 said command consists of three "0" followed by a "l". The real control command i8 shown in phase 2 of the diagram. In the following phase, marked ~, the supply voltage is completely . ' ~ r ' unaf f ected representing the condition in which the working meanR is activated. Then, wh~n the working means is to be disconncted, the supply of current is disrupted by opening of the triac switch 20. This phase has been designated by 4 in the diagram. - - ;
- ~In-the diagram of Fig. ~ those pulses are ~hown which have been discussed above and are present in the circuit 25 as the resu~t of the signals on inputs INl and IN2. The circuit 25 is provided with a shift register, not shown, which is being filled with the ones and zeros which represent the transmitted control command. When the start bit is present in a predetermi-ned position in the shift register the control command is W093/18~8 ~ CT/SE93/00l68 retrieved and gated to the corresponding output, in this case Q0, via a logic network or the like, activating said output and the working means connected thereto. ~he connection takes place by cloaing of a triac ~witch 27. The working means remains S connected for a period determined by the electronic programmer and when aid period has lapsed di~connection ta~es place by the triac swi~ch 20 being operated to take its open position.
It might be con~idered as a drawback that the current supply has to he disrupted every time a new working cycle i~ to be initlated. However, practice has shown that the function of the machine has got no negative influence whi~e at the same time a control system has been achieved which is very simple and which, as a result, can be manufactured at a low cost. In a di3hwasher, and even more in a laund~y washing machine, there is a problem in that a great number of wires are needed for the connection of the different working means to one another and to the programmer. By using the arangement according to the ~;
invention most of the wiring otherwise needed will disappear and the number of signal wires i8 reduced to a minLmum.
The invention is not limited to the embodLment described above and shown in the drawings and modifications can be made within the ~cope of the inventive idea expressed in the claims.
Accordingly, both the control unit and the slave unit can be otherwise designed and with other components. The latter has been shown as provided with a number of outputs corresponding to the number of working means to be connected. Instead, a number of slave units can be pro~ided where eaah slave unit is associated with one working means only. Further, the code chosen can of course be modified in the desired way in accor-dance with known code patterns and the control unit can be modified accordingly. Even though the invention has been made to be used prLmarily in di~h-washing and laundry washing - machines it can of course be applied in all those apparatuses and machines where there is a need for controI commands to be ~ent for the connection and disconnection of working means having inductive properties. ~
': '
The invention will now he described more in detail in connection with an embodiment with reference to the enclosed drawings, in which:
Fig. 1 shows a block diagram of the arrangement;
Fig. 2 schematically shows a control unit according to the invention;
Fig. 3 ~schematically show~ a slave uni~ having a working means connected to it; and Fig. 4 and 5 show diagram~ of waveforms of signals transferred ~between the control unit and the slave unit.
In the embodLment the invention is intended to be used in a dishwasher the main function and design of whlch being con-ventional. Accordingly, no deta.iled description of the dish-washer will be gi~en and said di~hwa~her will only be commented on in general term~ when needed. Hence, ~uch a machine may compri~e a dishwashing compartment supplied with water via a solenoid valve and drained of cleaning and rinsing liquid via a drainage pump! Further, in such machine a circulation pump is provided for the supply of cleaning and rinsing liquid to rotating spray-arms provided with holes and spraying liquid, in a conventional way, onto dish goods supported in basket~ in the dish-washing compartment. For the do~age of detergent there is provided a dosing device which via a~door, which can be opened by magnetic means, supplie6 a dose of powder from a dosage compartme~t covered by said door. Accordingly, the various ,, . .. ~.. ... ,. . :
working means which in this case have to be~controlled by a programmer are the circulation pump, the drain pump, the dosage device and the solenoid valve. Preferably, in this case the programmer i5 of the electronic type comprising a microproces-sor, a program memory and additional electronic components required.
In the following description the control components W093/18568 ! ' ~ 9 0 7 ~ PC~/SE93/00~68 _~ 3 concerned have been removed from the dishwasher together with one of the working means and these details are shown schemati-cally in the block diagram of fig. 1. Accordingly, the control arrangement comprises a control unit 10 and a slave unit 11 interconnected by a line 13, referred to as a bus line. In the line a triac switch 20 is connected by which the voltage to the slave unit 11 can be broken, either permanently or temporary when a control command is to be transmitted. A working means 24 is connected to the slave unit 11 via a triac switch 27. As ~hown in greater detail in fig. 2, the control unit consists of a microprocessor 14 which in a known way communlcates, via an address bus 15 and a data bus 16, with a program memory 17. Via terminals 18, ls the bus line is connected to a mains AC
network and via the triac switch 20 the bus line is connected to the slave unit 11. Said triac switch i~ controlled, via a driver circuit 21, from the microprocessor 14. ~n opto coupler 22 is u~ed to supply pha~e information from the ~upplied AC
volt~ge to the microprocessor. In the usual way the micropro-cessor is also connected to a clock pulse generator 23.
The mlcroprocessor 14 and the program memory 17 constitute an eleatronic programmer determlning the function of the connected machine, here the dishwa~her, ~aid programmer al~o controlling the activation of the different working means, here represented by the load 24, ~ee Fig. 3~ The last-mentioned figure shows the slave unit 11 which compri~es an electronic circuit 25 referred to as EP310 PAL Altera. ~he circuit has two inputs INl and IN2 of which IN1 is connected to a monostable ~ - ; flip-flop 26. The flip-$10p i~ triggered by each positiv~ half-I - period o~ the supply voltage generating pulses of a constant ¦ - 30 width-. ~he ~econd input I~2 of the circuit 25 i9 directly connected to the supply AC voltage and in a manner not dis-clo~ed in detail the circuit u~es the positive half- periods on the input IN2 to be compared with the pulses on the input INl in order to determlne the nature of the data information transferred, "1" or "0". The circuit 25 has a number of outputs Q0-Q4 to which the different loads are connected. In the example the only load 24 is connected to the output Q0 via a triac switch 27.
More or less sophisticated methods can ~e used in creating WO93/18568 ,. ~ PCT/SE93/00168 21~907~ 4 ~
a control command for activation or inactivation of one or several of a number of working means or loads. In a domestic appliance of the type dishwasher or laundry washing machin~ it is of great value, however, if codes are used which are as simple as possible. As a result the command for disconnection is equal to breaking of the voltage while the command for switching-on of a load i5 equal to a binary code activating the re~pective output o~ the circuit 25 in the slave unit. For activation of the outputs Q0-Q4 binary codes lOOOl, lOOlO, lOOll, lOlO0 and lOlOl are used where in each code the first "l" i~ a start ~it. In the diagram of Fig. 4 there is shown the waveform of the supply voltage transmitted on the bus line with a control command for the output Q0 included. Aacording to the ~ invention, first the voltage is broken for a time period sufficil3nt for all working means to ~e di~connected and all motor~ 1:o be standstill. Then the voltage is switched-on for a shorter period to have the condition of the slave unit ll stabilize. In the diagram this pha~e has been marked by the digit l. ~hen follows the control command it~elf which starts with a 3tart bit represented by a "l". The "l" is represented by a halfoperiod of the supply voltage ~uppressed during 50% of it~ duration whereas a "0" is represented by a full half-period. In addition to the ~tart bit, the control command compri~es iour additional bits and with re~pect to the output Q0 said command consists of three "0" followed by a "l". The real control command i8 shown in phase 2 of the diagram. In the following phase, marked ~, the supply voltage is completely . ' ~ r ' unaf f ected representing the condition in which the working meanR is activated. Then, wh~n the working means is to be disconncted, the supply of current is disrupted by opening of the triac switch 20. This phase has been designated by 4 in the diagram. - - ;
- ~In-the diagram of Fig. ~ those pulses are ~hown which have been discussed above and are present in the circuit 25 as the resu~t of the signals on inputs INl and IN2. The circuit 25 is provided with a shift register, not shown, which is being filled with the ones and zeros which represent the transmitted control command. When the start bit is present in a predetermi-ned position in the shift register the control command is W093/18~8 ~ CT/SE93/00l68 retrieved and gated to the corresponding output, in this case Q0, via a logic network or the like, activating said output and the working means connected thereto. ~he connection takes place by cloaing of a triac ~witch 27. The working means remains S connected for a period determined by the electronic programmer and when aid period has lapsed di~connection ta~es place by the triac swi~ch 20 being operated to take its open position.
It might be con~idered as a drawback that the current supply has to he disrupted every time a new working cycle i~ to be initlated. However, practice has shown that the function of the machine has got no negative influence whi~e at the same time a control system has been achieved which is very simple and which, as a result, can be manufactured at a low cost. In a di3hwasher, and even more in a laund~y washing machine, there is a problem in that a great number of wires are needed for the connection of the different working means to one another and to the programmer. By using the arangement according to the ~;
invention most of the wiring otherwise needed will disappear and the number of signal wires i8 reduced to a minLmum.
The invention is not limited to the embodLment described above and shown in the drawings and modifications can be made within the ~cope of the inventive idea expressed in the claims.
Accordingly, both the control unit and the slave unit can be otherwise designed and with other components. The latter has been shown as provided with a number of outputs corresponding to the number of working means to be connected. Instead, a number of slave units can be pro~ided where eaah slave unit is associated with one working means only. Further, the code chosen can of course be modified in the desired way in accor-dance with known code patterns and the control unit can be modified accordingly. Even though the invention has been made to be used prLmarily in di~h-washing and laundry washing - machines it can of course be applied in all those apparatuses and machines where there is a need for controI commands to be ~ent for the connection and disconnection of working means having inductive properties. ~
': '
Claims (8)
1. An arrangement in an apparatus or a machine operated from the mains for the transfer of control commands to at least one working means (24) in the apparatus or machine, e.g. a motor or the like, via a wire (13) also used for the power supply to said working means, the arrangement comprising a control unit (10) provided for creating a control command by suppressing, in a predetermined order, at least part of one or several consecu-tive half-periods of the supply voltage, and a slave unit (11) operating in response to the control command transmitted to activate the working means (24), characterized in that the control unit (10) has such a design that before a control command is transmitted the control unit operates to shortly disconnect the supply voltage on the wire (13) for a period of time required for the current in the working means (24) to decline essentially to zero.
2. An arrangement according to claim 1, characterized in that the consecutive half-periods of the AC supply voltage are of a predermined polarity.
3. An arrangement according to claim 1 or 2, characterized in that one end of the wire (13) is connected to a mains AC
network and that between said end and the slave unit (11) an electronic switch (20) is provided which disconnects the voltage to the slave unit (11) in response to a control signal from the control unit (10) both prior to the transmission of a control command and for generating of the suppression of predetermined half-periods forming the control command.
network and that between said end and the slave unit (11) an electronic switch (20) is provided which disconnects the voltage to the slave unit (11) in response to a control signal from the control unit (10) both prior to the transmission of a control command and for generating of the suppression of predetermined half-periods forming the control command.
4. An arrangement according to any of the preceding claims, characterized in that the electronic switch (20) is a triac switch.
5. An arrangement according to any of the preceding claims, characterized in that essentially 50% of the positive half-period of the AC supply voltage is being suppressed to form one of the two binary states of a binary code forming the control command.
6. An arrangement according to claim 5, characterized in that the slave unit (11) comprises an electronic circuit (25) having two inputs (IN1l, IN2) and a number of outputs (Q0-Q4) corre-sponding to the number of working means (24), one (IN1) of said inputs being connected to a monostable flip-flop (26) to receive from said flip-flop a positive pulse of constant width generated each time a positve half-period appears on the wire (13), while the other input (IN2) is directly connected to the wire, the electronic circuit (25) being designed so that a comparison between the pulses from the flip-flop (26) and pulses generated by the circuit, in correspondance with the positive half-periods on the second input ( IN2 ), decodes the transmitted control command.
7. An arrangement according to claim 6, characterized in that the electronic circuit (25) comprises a shift register in which the transferred command is introduced, wherein when a start bit of said command has taken a predetermined position in the shift register the code introduced in said shift register is caused to activate, via e logic network or the like, the output (Q0) that corresponds to said command.
8. An arrangement according to claim 7, characterized in that the working means (24) is connected in series with an elec-tronic switch (27) having a control input connected to the output (Q0) of the electronic circuit (25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9200703A SE469959B (en) | 1992-03-06 | 1992-03-06 | Device for transmitting control commands in an AC or machine |
| SE9200703-8 | 1992-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2109075A1 true CA2109075A1 (en) | 1993-09-07 |
Family
ID=20385546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002109075A Abandoned CA2109075A1 (en) | 1992-03-06 | 1993-02-26 | Arrangement for the transfer of control commands in an apparatus or a machine operated from the mains |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5493267A (en) |
| EP (1) | EP0591482B1 (en) |
| JP (1) | JPH06507773A (en) |
| AT (1) | ATE138765T1 (en) |
| AU (1) | AU652313B2 (en) |
| CA (1) | CA2109075A1 (en) |
| DE (1) | DE69302880T2 (en) |
| ES (1) | ES2089799T3 (en) |
| SE (1) | SE469959B (en) |
| WO (1) | WO1993018568A1 (en) |
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| FR2710477B1 (en) * | 1993-09-24 | 1995-11-17 | Seb Sa | Method and circuit for transmitting information from sensors on an electrical conductor wire. |
| FI97587C (en) * | 1994-09-09 | 1997-01-10 | Seppo Laine | Local Networking Events |
| JPH0946441A (en) * | 1995-05-19 | 1997-02-14 | Sanyo Electric Co Ltd | Remote management system |
| FR2764420B1 (en) * | 1997-06-10 | 1999-07-23 | Electricite De France | METHOD FOR CONTROLLING SLAVE APPLIANCES FROM A MASTER UNIT |
| FR2780220A1 (en) * | 1998-06-22 | 1999-12-24 | Sgs Thomson Microelectronics | TRANSMISSION OF DIGITAL DATA ON AN ALTERNATIVE POWER LINE |
| FR2780221B1 (en) | 1998-06-22 | 2000-09-29 | Sgs Thomson Microelectronics | TRANSMISSION OF AN OPERATING INSTRUCTION BY AN ALTERNATIVE POWER SUPPLY LINE |
| US6188314B1 (en) | 1999-02-03 | 2001-02-13 | Trw Inc. | Energy distribution and communication system and method utilizing a communication message frame for a multi-device vehicle occupant protection system |
| FR2792134B1 (en) | 1999-04-07 | 2001-06-22 | St Microelectronics Sa | DISTANCE DETECTION BETWEEN AN ELECTROMAGNETIC TRANSPONDER AND A TERMINAL |
| FR2792130B1 (en) | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | ELECTROMAGNETIC TRANSPONDER WITH VERY CLOSE COUPLING OPERATION |
| FR2792135B1 (en) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | VERY CLOSE COMPLAGE OPERATION OF AN ELECTROMAGNETIC TRANSPONDER SYSTEM |
| FR2792136B1 (en) | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | DUPLEX TRANSMISSION IN AN ELECTROMAGNETIC TRANSPONDER SYSTEM |
| FR2792132B1 (en) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | READING TERMINAL OF AN ELECTROMAGNETIC TRANSPONDER OPERATING IN VERY CLOSE COUPLING |
| US6650226B1 (en) | 1999-04-07 | 2003-11-18 | Stmicroelectronics S.A. | Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder |
| US7049935B1 (en) | 1999-07-20 | 2006-05-23 | Stmicroelectronics S.A. | Sizing of an electromagnetic transponder system for a dedicated distant coupling operation |
| FR2796781A1 (en) * | 1999-07-20 | 2001-01-26 | St Microelectronics Sa | DIMENSIONING OF AN ELECTROMAGNETIC TRANSPONDER SYSTEM FOR HYPERPROXIMITY OPERATION |
| FR2804557B1 (en) * | 2000-01-31 | 2003-06-27 | St Microelectronics Sa | ADAPTING THE TRANSMISSION POWER OF AN ELECTROMAGNETIC TRANSPONDER DRIVE |
| US6570493B1 (en) | 2000-05-03 | 2003-05-27 | Eliahu Lames | Method and apparatus for operating an electrical device |
| FR2808945B1 (en) * | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | EVALUATION OF THE NUMBER OF ELECTROMAGNETIC TRANSPONDERS IN THE FIELD OF A READER |
| FR2808946A1 (en) | 2000-05-12 | 2001-11-16 | St Microelectronics Sa | VALIDATION OF THE PRESENCE OF AN ELECTROMAGNETIC TRANSPONDER IN THE FIELD OF A READER |
| FR2808941B1 (en) | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | VALIDATION OF THE PRESENCE OF AN ELECTROMAGNETIC TRANSPONDER IN THE FIELD OF AN AMPLITUDE DEMODULATION READER |
| FR2808942B1 (en) * | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | VALIDATION OF THE PRESENCE OF AN ELECTROMAGNETIC TRANSPONDER IN THE FIELD OF A PHASE DEMODULATION READER |
| FR2809235A1 (en) * | 2000-05-17 | 2001-11-23 | St Microelectronics Sa | ANTENNA FOR GENERATING AN ELECTROMAGNETIC FIELD FOR TRANSPONDER |
| FR2809251B1 (en) * | 2000-05-17 | 2003-08-15 | St Microelectronics Sa | DEVICE FOR PRODUCING AN ELECTROMAGNETIC FIELD FOR A TRANSPONDER |
| FR2812986B1 (en) * | 2000-08-09 | 2002-10-31 | St Microelectronics Sa | DETECTION OF AN ELECTRIC SIGNATURE OF AN ELECTROMAGNETIC TRANSPONDER |
| US20030169169A1 (en) * | 2000-08-17 | 2003-09-11 | Luc Wuidart | Antenna generating an electromagnetic field for transponder |
| US7084741B2 (en) * | 2000-09-04 | 2006-08-01 | Signal Data Systems Pty, Ltd. | Method for communication between a first station and a second station, and a controller and remote station using the communication method |
| AU784720B2 (en) * | 2000-09-04 | 2006-06-01 | Signal Data Systems Pty Ltd | Method for communicating between a first station and a second station, and a controller and remote station |
| IT1320621B1 (en) * | 2000-09-05 | 2003-12-10 | Wrap Spa | METHOD, SYSTEM AND APPARATUS FOR DATA TRANSMISSION ON THE ELECTRICITY NETWORK |
| AUPR023700A0 (en) | 2000-09-19 | 2000-10-12 | Signal Data Systems Pty Ltd | Method for communicating between a first station and a second station, and a controller and remote station |
| DE102007048631A1 (en) * | 2007-10-02 | 2009-05-20 | Festool Gmbh | Hand tool |
| DE102009035668A1 (en) * | 2009-07-30 | 2011-02-03 | Meiko Maschinenbau Gmbh & Co. Kg | Energy-optimized machine control for cleaning devices |
| DE102012024308A1 (en) | 2012-12-12 | 2014-06-12 | TERRAMARK Markencreation Gesellschaft mit beschränkter Haftung | Dishwasher for operation in different low-voltage networks and method for energy-saving operation of a dishwasher |
| US10264740B2 (en) | 2014-12-05 | 2019-04-23 | Pivot Pup Irrigation, LLC | Irrigating soils and crops |
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|---|---|---|---|---|
| US4007458A (en) * | 1975-12-29 | 1977-02-08 | Clemar Manufacturing Corporation | Digital two-wire irrigation control system |
| ATE14055T1 (en) * | 1980-04-28 | 1985-07-15 | Paul Rouet | METHOD AND SYSTEM FOR THE TRANSMISSION OF MESSAGES AND CONTROL ON AN AC SUPPLY NETWORK. |
| JPS5925592A (en) * | 1982-08-02 | 1984-02-09 | Toyota Central Res & Dev Lab Inc | Control of inverter and device therefor |
| JPS5972991A (en) * | 1982-10-19 | 1984-04-25 | Fanuc Ltd | Controller for motor |
| US4706180A (en) * | 1985-11-29 | 1987-11-10 | York International Corporation | Pulse width modulated inverter system for driving single phase a-c induction motor |
| US5200684A (en) * | 1988-04-18 | 1993-04-06 | Whirlpool Corporation | Electrical motor monitoring system for a domestic appliance |
| US4990908A (en) * | 1989-03-23 | 1991-02-05 | Michael Tung | Remote power control for dual loads |
| EP0489970A1 (en) * | 1990-12-14 | 1992-06-17 | BSG-Schalttechnik GmbH & Co. KG | Method and device for operating electric drives |
| DE4111226A1 (en) * | 1991-04-08 | 1992-10-15 | Asea Brown Boveri | METHOD FOR CONTROLLING ELECTRICAL VALVES OF A CONVERTER |
| US5355070A (en) * | 1993-03-10 | 1994-10-11 | A. C. Propulsion, Inc. | Induction motor drive stability control circuit |
-
1992
- 1992-03-06 SE SE9200703A patent/SE469959B/en not_active IP Right Cessation
-
1993
- 1993-02-26 DE DE69302880T patent/DE69302880T2/en not_active Expired - Fee Related
- 1993-02-26 WO PCT/SE1993/000168 patent/WO1993018568A1/en active IP Right Grant
- 1993-02-26 EP EP93905723A patent/EP0591482B1/en not_active Expired - Lifetime
- 1993-02-26 CA CA002109075A patent/CA2109075A1/en not_active Abandoned
- 1993-02-26 AU AU36540/93A patent/AU652313B2/en not_active Ceased
- 1993-02-26 JP JP5515582A patent/JPH06507773A/en active Pending
- 1993-02-26 ES ES93905723T patent/ES2089799T3/en not_active Expired - Lifetime
- 1993-02-26 US US08/146,003 patent/US5493267A/en not_active Expired - Fee Related
- 1993-02-26 AT AT93905723T patent/ATE138765T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE469959B (en) | 1993-10-11 |
| DE69302880T2 (en) | 1996-09-26 |
| WO1993018568A1 (en) | 1993-09-16 |
| JPH06507773A (en) | 1994-09-01 |
| SE9200703L (en) | 1993-09-07 |
| SE9200703D0 (en) | 1992-03-06 |
| ATE138765T1 (en) | 1996-06-15 |
| DE69302880D1 (en) | 1996-07-04 |
| ES2089799T3 (en) | 1996-10-01 |
| AU3654093A (en) | 1993-10-05 |
| AU652313B2 (en) | 1994-08-18 |
| EP0591482B1 (en) | 1996-05-29 |
| EP0591482A1 (en) | 1994-04-13 |
| US5493267A (en) | 1996-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |