Systems and Methods For Site-Based Irrigation Control

Abstract

An irrigation system is contained at a particular site, where the site may be a commercial address or a residential address. The system includes a weather station that generates temperature data, precipitation data, and any other useful data that might be used by other components of the system. The system also includes an irrigation controller that uses electrical signals to open and close valves, thereby turning sprinklers on and off, whether zone-by-zone or sprinkler-by-sprinkler. The system further includes a host device which communicates with the weather station and with the irrigation controller. The host device includes a computer processor and one or more wireless interfaces. The host device receives the weather data from the weather station and calculates an amount of desired irrigation, generating an irrigation schedule. The host device then controls the irrigation controller according to the generated irrigation schedule.

What is claimed is: 
     
         1 . A system comprising:
 a site-based computing device having:
 a first communication interface configured for communicating with a site-based weather station at a same site as the computing device, the site-based computing device configured for receiving weather data from the site-based weather station via the first communication interface; 
 a computer processor configured for receiving the weather data and generating an irrigation schedule for the site based on the weather data and boundary conditions for the site, wherein generating the irrigation schedule comprises generating a watering time and a watering duration for each of a plurality of watering zones; and 
 a second communication interface configured for communicating with an irrigation controller at the site, the computer processor configured to control opening and closing of irrigation valves at the site, via the second communication interface, and according to the watering time and watering duration for each of the watering zones. 
   
     
     
         2 . The system of  claim 1 , wherein boundary conditions include at least one of the following parameters: plant type in an irrigation zone, soil type in an irrigation zone, and sprinkler type in an irrigation zone. 
     
     
         3 . The system of  claim 1 , wherein the second communication interface comprises a master communication interface, the system further comprising:
 a plurality of additional irrigation controllers at the site, wherein the irrigation controller and the additional irrigation controllers are configured as slave devices responsive to the computer processor as a master device.   
     
     
         4 . The system of  claim 1 , wherein the site comprises commercial real estate having a single address. 
     
     
         5 . The system of  claim 1 , wherein the site-based computing device further has a third communication interface configured for communicating over the Internet with a server computer. 
     
     
         6 . The system of  claim 5 , wherein the computer processor is operable to receive the boundary conditions for the site over the Internet via the server computer. 
     
     
         7 . The system of  claim 5 , wherein the third communication interface is configured for communicating over a cellular network with the server computer. 
     
     
         8 . The system of  claim 1 , wherein the computer processor includes a memory having a memory map defined for a plurality of data points, each of the data points corresponding to an irrigation parameter of the site. 
     
     
         9 . The system of  claim 8 , wherein the computer processor is configured to transmit to a server ones of the data points that have changed since a previous transmission to the server while omitting transmitting to the server ones of the data points that have not changed since the previous transmission to the server. 
     
     
         10 . the system of  claim 1 , further comprising:
 a flow sensor configured to generate signals to the host device, the signals indicative of a flow of water; and   logic at the computer processor configured to convert the signals into a flow measurement.   
     
     
         11 . A method performed by a site-based computing device in communication with a physical weather station at the same site and an irrigation controller at the same site, the method comprising:
 communicating with the weather station using a first communication interface to receive weather data for the site;   communicating with a server over the Internet to receive boundary condition parameters regarding the site;   generating an irrigation schedule for the site based on the weather data and the boundary condition parameters, wherein the generating is performed using a computer processor of the site-based computing device, and wherein generating the irrigation schedule comprises generating a watering time and a watering duration for each of a plurality of watering zones; and   communicating with the irrigation controller to cause the irrigation controller to open and close a plurality of water valves at the site according to the watering time and watering duration for each of the watering zones and according to a communication protocol associated with the irrigation controller.   
     
     
         12 . The method of  claim 11 , further comprising:
 storing irrigation parameters of the site in a memory map of the computer processor;   in response to determining that it is a time period for communicating at least some of the irrigation parameters, transmitting ones of the irrigation parameters to a server over the Internet, and omitting transmitting ones of the irrigation parameters that have not changed since a prior transmission.   
     
     
         13 . The method of  claim 11 , further comprising:
 communicating with an on-site water flow meter to receive data indicative of water flow at the site; and   calculating a real-time flow specific to a particular zone of the site or a particular valve of the site.   
     
     
         14 . The method of  claim 11 , wherein communicating with the server comprises transmitting and receiving information over the Internet using a wireless access point located at the site. 
     
     
         15 . The method of  claim 11 , wherein generating an irrigation schedule comprises employing a modified Hargreaves algorithm. 
     
     
         16 . The method of  claim 11 , further comprising:
 communicating with a plurality of additional irrigation controllers at the site, wherein the irrigation controller and the additional irrigation controllers are configured as slave devices responsive to the site-based computing device.   
     
     
         17 . An irrigation system located at a site to be irrigated, the irrigation system comprising:
 means for communicating with an on-site physical weather station using a first communication interface to receive weather data for the site;   means for communicating with a server over the Internet to receive boundary condition parameters regarding the site;   means for generating an irrigation schedule for the site based on the weather data and the boundary condition parameters by generating a watering time and a watering duration for each of a plurality of watering zones; and   means for communicating with an irrigation controller to cause the irrigation controller to open and close a plurality of water valves at the site according to the watering time and watering duration for each of the watering zones and according to a communication protocol associated with the irrigation controller.   
     
     
         18 . The irrigation system of  claim 17 , further comprising:
 means for sensing water flow in communication with the irrigation schedule generating means.   
     
     
         19 . The irrigation system of  claim 17 , wherein the means for communicating with the irrigation controller comprises means for communicating with a plurality of irrigation controllers configured as slave devices. 
     
     
         20 . The irrigation system of  claim 17 , wherein the means for generating the irrigation schedule comprises a microprocessor in communication with a memory for storing computer executable code, the microprocessor operable to execute the computer executable code and to generate the irrigation schedule according to the computer executable code.