WO2002099543A1 - Control system and method - Google Patents
Control system and method Download PDFInfo
- Publication number
- WO2002099543A1 WO2002099543A1 PCT/AU2002/000733 AU0200733W WO02099543A1 WO 2002099543 A1 WO2002099543 A1 WO 2002099543A1 AU 0200733 W AU0200733 W AU 0200733W WO 02099543 A1 WO02099543 A1 WO 02099543A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- controller
- location
- control
- accordance
- default
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2625—Sprinkler, irrigation, watering
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2642—Domotique, domestic, home control, automation, smart house
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2664—Audio light, animation, stage, theatre light
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86389—Programmer or timer
Definitions
- This invention relates to a control system and method, particularly for providing sophisticated switching control, such as for the provision of irrigation management and/or scheduling lighting schedules, security measures, and other purposes, with respect to a site or to a series of sites in an area.
- 'controllers' are well known and are the subject of a number of patents and patent applications. These devices send an electric current (usually 24vAC in horticultural, agricultural or domestic use) to a remote solenoid valve causing that valve to open. Closure of the valve is usually effected by discontinuing the supply of electric current to the solenoid of the valve whereupon the valve is closed, eg by a suitable resilient means. Most controllers are able to accommodate a number of such valves, opening and closing them in a programmed succession for prescribed times on prescribed days of the week. This series of sequential valve opening and closing - for specified times on specified days - is generally referred to as an 'irrigation program'. Some - indeed many - of the known devices are capable of storing and executing more than one such program, thus adding a degree of flexibility to what may be accomplished.
- controllers which are able to schedule their operations using meteorological data.
- controllers which are able to schedule their operations using meteorological data.
- One of the present inventors has previously taught methods providing a considerable advance on the above-mentioned techniques, as disclosed in PCT patent applications O- 97/27733 and O-99/48354.
- enabling/disabling or otherwise controlling the activity and/or output of a controller is usually performed by means of a switch relay located in the electrical circuit between the controller and the solenoids of the irrigation supply valves.
- the switching coil of this relay can be energised and de-energised to control the device in which it is incorporated, in order to achieve the local activity, (or lack thereof) required.
- Such relays are typically wired to the irrigation sub-system using either normally closed or normally open terminals. If the sub-system is wired to the relay using normally closed terminals, then the activity to be controlled (ie the programmed event) will occur unless a controlling signal is received by the device incorporating the relay. If the sub-system is wired to the relay using normally open terminals, then the activity to be controlled will not occur unless a controlling signal is received by the device incorporating the relay.
- a method of control for a distributed event system providing control of events at one or more locations, each location associated with a programmable location controller able to cause or permit a prescribed event to be carried out at that location, the location controller able to receive control commands from a remote controller, each location controller having at least two default settings to govern implementation of said prescribed event in case of non-receipt of commands from said remote controller.
- said default settings are automatically selectable in accordance with one or more parameters, for example in accordance with time. This may be in accordance with the season of the year and/or the day of the week and/or the time of the day.
- the distributed event system comprises an irrigation system, and each location controller is operatively connected with at least one electrically operable water valve to control water supply to an area associated with that location, each location controller including an electrical switch relay having two selectable default positions, 'fail-open' and 'fail-closed'.
- Control commands received from the remote controller by said location controller may be provided in accordance with monitored meteorological conditions.
- the default position for a location controller is established as part of the power connection configuration to the electrical terminals of the at least one electrically operated water valve.
- the power connection configuration is selectable under software control, the software being remotely programmable from the remote controller to vary the functional relationship between the selection of the default settings and said one or more parameters.
- the power connection configuration is selectable under hardware control, and may include a bi-polar stable relay.
- the invention provides a default mode alteration capability for event enabling systems.
- the invention provides a preferred failsafe functionality to the system, such that in the absence of receipt of said remote signals by a local irrigation controller (due, for example, to a break in the communications network to the controller), the irrigation event may be enabled or disabled, selectively in accordance with, say, the day of the week, season of the year, etc.
- Other parameters may alternatively or additionally be used to automatically provide the controller default setting, such as locally monitored light levels, temperature, humidity, rainfall, etc.
- connection between the remote controller and the location controller may be provided by way of a distributed computer network such as the Internet, and may include wireless data transmission equipment to transmit control commands from the remote controller to the location controller.
- a programmable location controller for a distributed event enabling system controlling events at one or more locations, the controller able to cause or permit a prescribed event to be carried out at a respective location, the controller arranged to receive control commands from a remote controller, wherein the controller has at least two default settings to govern implementation of said prescribed event in case of non-receipt of commands from said remote controller.
- the controller includes means to select said default settings in accordance with one or more parameters, for example in accordance with time. This may be in accordance with the season of the year and/or the day of the week and/or the time of the day.
- the controller may be for use with an irrigation system as said distributed event system, the controller operatively connectable with at least one electrically operable water valve to control water supply to an area associated with that location, the controller including an electrical switch relay having two selectable default positions, 'fail-open' and 'fail-closed'.
- the controller may include a power connection configuration to the electrical terminals of the at least one electrically operated water valve, said configuration providing the means to establish the default position.
- the controller may include software to establish said power connection configuration, and may include means to allow remote programming of said software from a remote controller to vary the functional relationship between the selection of the default settings and said one or more parameters.
- the controller may include hardware circuitry to provide said power connection configuration, such as a bi-polar stable relay.
- a programmable irrigation system including the above-mentioned programmable location controller and a plurality of electrically operable water valves operatively interconnected therewith in order to control water supply to an area associated with that location.
- a distributed event system including a plurality of controllers as defined above, including means to provide control commands to said location controllers automatically in accordance with monitored meteorological conditions.
- said remote controller is arranged to provide control commands to said location controller automatically in accordance with monitored meteorological conditions (rainfall, temperature, air humidity, etc), and/or in response to manual override commands.
- monitored meteorological conditions rainfall, temperature, air humidity, etc
- the location controller may provide the irrigation program, the remote control command receiver, and the default setting means, all as part of a single controller unit.
- the location controller may be provided as a combination of units.
- the remote control command receiver and the default setting means may be electrically connected to an existing standard onsite irrigation program controller.
- FIGS 2a and 2b illustrate default switching positions in accordance with the invention.
- the embodiment described below enables a plurality of devices to be automatically placed in whichever default operating mode (normally closed or normally open) is required or is appropriate for the particular situation over the course of time.
- Programmable irrigation controllers to schedule and manage the irrigation of specific areas to be irrigated, such as parks, gardens and sports facilities, without the need for human intervention, are generally known in the art.
- a single controller can store one or more irrigation programs for a plurality of valves spread over a number of zones associated with that location.
- the irrigation programs are set as a function of various measured characteristics of the zones to be irrigated, such as the root zone depth, soil texture, etc, the program for a particular valve thus providing an optimum irrigation event for the associated zone.
- the system may be a true distributed system, with a central controller in communication with a great many local controllers carrying out a variety of functions and spread over a large total area, the central controller receiving and processing weather station assets, governing and monitoring the operation of the local controllers, and running modeling and prediction algorithms, with the objective of providing the most beneficial irrigation regime at every zone in the area.
- the system operates over the Internet, which greatly enhances reliability, and the communication with the local controller is accomplished by way of a wireless radio link, the command data received by an appropriate antenna/receiver at the local controller.
- the implementation of commands received from the remote controller is achieved by control of the output of the local controller. This is performed by means of one or more switch relays located in the electrical circuit between the controller and the solenoids of the irrigation supply valves (the irrigation sub-system) .
- the switching coil of a relay is energised and de-energised to control the device with which it is associated, in order to achieve the local activity, (or lack thereof) required.
- the controllers in a system of this type are set to a 'fail wet' default, meaning that in the absence of a remote override command (due to any unreliability in the remote controller or in the communication system) they are set to provide an irrigation event, because an over- watering of a zone is generally preferred to an under-watering.
- a remote override command due to any unreliability in the remote controller or in the communication system
- this situation is far from ideal, as will be explained in further detail below.
- the wired-in sub-system will be active for that control period (typically, but not necessarily, one day) .
- This operating mode can be referred to as 'fail active', meaning that the default condition of the sub-system is an active or operating mode.
- the relay within the controlling device is wired to the sub-system using the normally open terminals of the relay, then unless a signal is received by the device causing the coil to be energised by the device, the wired-in sub-system will be inactive for that control period (ie, the program stored in the local controller will not operate on the control valves and they will remain closed.
- This operating mode can be referred to as 'fail inactive', meaning that the default condition of the sub-system is an inactive or non- operating mode.
- an irrigation system is operated by a standard electronic controller of the type typically used to control the irrigation on an irrigated public open space.
- An example of such an area is a public park within a major city, with irrigated turf areas, managed by a local government authority such as the local council.
- the device typically exerts control over operation of the irrigation controller in one of two ways:
- the relay of the device is wired across the controller's valve common wire so that the electrical circuits to the valve solenoids can be made or broken by the operation of the relay; or
- the relay of the device is wired across the controller's sensor port such that valve operation is possible given electrical continuity between the terminals of the sensor port.
- the irrigation controller will apply an irrigation event. If such a signal is not received then the sub-system will be active (the 'fail active' configuration).
- sites would have to be continually visited and undergo wiring modification in order to alternately wire the connections between the relay within the device and the sub-system using respectively, the normally open or the normally closed terminals, as required having regard to the time of the year and the day of the week.
- the 'fail inactive' state on Friday and Saturday evenings in summer is especially important in the context of sports turf surfaces, as explained above.
- the invention provides a method and system for achieving this conveniently, without requiring site visits or disconnection/reconnection of wiring systems.
- the onsite components of a system in accordance with the invention include a programmable irrigation controller 10, a wireless receiver unit 20, and five electrical solenoids VI -V5 controlling respective irrigation valves in that local area.
- Unit 20 may be incorporated into controller 10, or may (as illustrated) be a separate unit, 'retrofitted' to a conventional irrigation sub-system.
- Controller 10 includes a power source (not shown), a transformer T, a power bus 11, and five independent switch devices 12 managed by a central programmable controller processor (not shown). Controller 10 also provides a common connection C connecting to a common bus for solenoids VI -V5. Each solenoid is wired to a respective switch device 12, and the controller program is thus able to control the timed switching of each valve solenoid, by selective connection of the lines to respective solenoid valves with power bus 11.
- Unit 20 is wired into common line C as shown in Figure 1, and thus provides an override for the output of controller 10.
- Unit 20 includes an antenna 21, which provides a signal input to a receiver/processor 22, which controls a relay switching module 23 in accordance with the received signals.
- Applicant's MicrometTM irrigation device works in this way, receiving remote command signals from a central Micromet computer.
- Two possible configurations of switching module 23 are shown in Figures 2a and 2b, respectively 'fail active' and 'fail inactive'.
- the relay coil 24 is normally energised due to electronic switch 25 being closed, and common connection C is thus normally unbroken.
- Signals received at receiver 22 result in an opening of electronic switch 25, a resultant de-energising of coil 24, and a breaking of common connection C.
- the irrigation program in controller 10 is carried out.
- 'fail inactive' mode the opposite outcome is achieved.
- electronic switch 25 is open, coil 24 is unenergised, and common connection C remains open.
- the output of controller 10 is not carried out at the irrigation valves.
- This desirable result can be achieved by either a software or a hardware solution.
- relay 23 in the device defaults to one of two modes.
- an instruction set is provided to set switch 25, in order to control how the device will function, and thus whether it is to fail inactive or active, in a time dependent manner.
- Additional instruction to control the position of switch 25, and thus define the default position of relay 23 can be provided from time to time if required, as part of the remote commands issued by the remote controller.
- the locally stored time- dependent default mode setting program can be updated from time to time in response to commands received from the remote controller.
- relay 23 is provided by way of a bi-polar stable relay.
- the circuitry changing the wiring configuration from normally closed to normally open is connected to appropriate terminals of the bi-polar stable relay.
- Instruction as to whether it is to fail active or inactive can be sent from the remote controller from time to time as required, causing the bi-polar stable relay 23 to change state.
- the invention has been described with reference to an irrigation system, but it is to be understood that it is capable of application in many other spheres.
- it may be used in controlled distributed lighting systems, or in controlled security applications such as door and gate locking systems.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2448633 CA2448633A1 (en) | 2001-06-06 | 2002-06-06 | Control system and method |
NZ530030A NZ530030A (en) | 2001-06-06 | 2002-06-06 | Remote control of local controllers for an irrigation system |
US10/479,365 US20040194833A1 (en) | 2001-06-06 | 2002-06-06 | Control system and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPR5475A AUPR547501A0 (en) | 2001-06-06 | 2001-06-06 | Time dependant automatic operating mode alteration for a complex event enabling system |
AUPR5475 | 2001-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002099543A1 true WO2002099543A1 (en) | 2002-12-12 |
Family
ID=3829452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2002/000733 WO2002099543A1 (en) | 2001-06-06 | 2002-06-06 | Control system and method |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040194833A1 (en) |
AU (1) | AUPR547501A0 (en) |
CA (1) | CA2448633A1 (en) |
NZ (1) | NZ530030A (en) |
WO (1) | WO2002099543A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1570728A1 (en) * | 2004-03-04 | 2005-09-07 | Jean-Daniel Hernandez | System for control of an automatic irrigation device |
ES2275371A1 (en) * | 2004-03-05 | 2007-06-01 | Samcla-Esic, S.A.L | Irrigation system for game tracks has activation device having informative signboard, visual signaler, and drive transducer that are accommodated by protective housing |
US7997294B2 (en) | 2008-07-30 | 2011-08-16 | Donald Murray | Soil moisture sensing apparatus for preventing overwatering |
WO2015087355A3 (en) * | 2013-12-09 | 2016-03-03 | Rangineni Srikanth | Intelligent lighting control system for workplaces |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8620480B2 (en) | 2003-04-25 | 2013-12-31 | George Alexanian | Irrigation water conservation with automated water budgeting and time of use technology |
US8538592B2 (en) | 2003-04-25 | 2013-09-17 | George Alexanian | Landscape irrigation management with automated water budget and seasonal adjust, and automated implementation of watering restrictions |
WO2007011999A2 (en) * | 2005-07-19 | 2007-01-25 | Rain Bird Corporation | Wireless extension to an irrigation control system and related methods |
US20070074767A1 (en) * | 2005-09-30 | 2007-04-05 | Roffey Tony W | Self-charging programmable water valve |
US7786859B2 (en) | 2006-01-31 | 2010-08-31 | Fousse David E | Locator apparatus and method using that apparatus |
US8565904B2 (en) | 2009-09-03 | 2013-10-22 | Bruce Allen Bragg | Irrigation controller and system integrating no-watering restrictions and an empirically-derived evapotranspiration local characteristic curve |
US11061375B2 (en) | 2010-04-06 | 2021-07-13 | Connie R. Masters | Irrigation controller and system |
US20100256827A1 (en) * | 2009-04-06 | 2010-10-07 | Bruce Allen Bragg | Irrigation Controller Integrating Mandated No-Watering Days, Voluntary No-Watering Days, and an Empirically-Derived Evapotranspiration Local Characteristic Curve |
US8930032B2 (en) * | 2011-11-22 | 2015-01-06 | Zbs Technology, Llc | System and method for wireless irrigation control with a remote application |
US9244449B2 (en) | 2011-11-29 | 2016-01-26 | Rain Bird Corporation | Wireless irrigation control |
US20160378102A1 (en) * | 2015-06-23 | 2016-12-29 | Greg Goodrich | Remotely deployable inverse proactive status monitoring and reporting system and method of use |
US10098291B2 (en) * | 2015-12-11 | 2018-10-16 | Lindsay Corporation | System and method for remote overide of alignment fault for pivot irrigation systems |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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RU1787283C (en) * | 1990-12-13 | 1993-01-07 | Молдавский Филиал Украинского Научно-Исследовательского Института Гидротехники И Мелиорации | Evaporimeter transducer |
US5651500A (en) * | 1993-10-07 | 1997-07-29 | Patterson; David | Automated farming system |
US5921280A (en) * | 1997-10-31 | 1999-07-13 | Pro-Mark, Inc. | Remotely controllable programmable controller for irrigation |
US6108590A (en) * | 1996-09-26 | 2000-08-22 | Hergert; C. David | Integrated irrigation optimization power control system |
EP1041477A2 (en) * | 1995-10-10 | 2000-10-04 | The Foxboro Company | Control system for a field-control |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6173727B1 (en) * | 1998-05-06 | 2001-01-16 | Donald Davey | Remote control sprinkler control system |
US6880062B1 (en) * | 2001-02-13 | 2005-04-12 | Candera, Inc. | Data mover mechanism to achieve SAN RAID at wire speed |
US7286904B2 (en) * | 2004-08-21 | 2007-10-23 | Npd Corp. | Systems and methods for adaptation to wireless remote control of irrigation valves from existing hardwired control devices |
-
2001
- 2001-06-06 AU AUPR5475A patent/AUPR547501A0/en not_active Abandoned
-
2002
- 2002-06-06 NZ NZ530030A patent/NZ530030A/en unknown
- 2002-06-06 US US10/479,365 patent/US20040194833A1/en not_active Abandoned
- 2002-06-06 CA CA 2448633 patent/CA2448633A1/en not_active Abandoned
- 2002-06-06 WO PCT/AU2002/000733 patent/WO2002099543A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU1787283C (en) * | 1990-12-13 | 1993-01-07 | Молдавский Филиал Украинского Научно-Исследовательского Института Гидротехники И Мелиорации | Evaporimeter transducer |
US5651500A (en) * | 1993-10-07 | 1997-07-29 | Patterson; David | Automated farming system |
EP1041477A2 (en) * | 1995-10-10 | 2000-10-04 | The Foxboro Company | Control system for a field-control |
US6108590A (en) * | 1996-09-26 | 2000-08-22 | Hergert; C. David | Integrated irrigation optimization power control system |
US5921280A (en) * | 1997-10-31 | 1999-07-13 | Pro-Mark, Inc. | Remotely controllable programmable controller for irrigation |
Non-Patent Citations (1)
Title |
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DATABASE WPI Derwent World Patents Index; Class P13, AN 1994-041783/05 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1570728A1 (en) * | 2004-03-04 | 2005-09-07 | Jean-Daniel Hernandez | System for control of an automatic irrigation device |
FR2867022A1 (en) * | 2004-03-04 | 2005-09-09 | Jean Daniel Hernandez | SYSTEM FOR MANAGING AUTOMATIC WATERING DEVICES |
ES2275371A1 (en) * | 2004-03-05 | 2007-06-01 | Samcla-Esic, S.A.L | Irrigation system for game tracks has activation device having informative signboard, visual signaler, and drive transducer that are accommodated by protective housing |
US7997294B2 (en) | 2008-07-30 | 2011-08-16 | Donald Murray | Soil moisture sensing apparatus for preventing overwatering |
WO2015087355A3 (en) * | 2013-12-09 | 2016-03-03 | Rangineni Srikanth | Intelligent lighting control system for workplaces |
Also Published As
Publication number | Publication date |
---|---|
NZ530030A (en) | 2005-10-28 |
AUPR547501A0 (en) | 2001-06-28 |
CA2448633A1 (en) | 2002-12-12 |
US20040194833A1 (en) | 2004-10-07 |
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