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US 6,502,409 B1Granted
Wireless method and apparatus for monitoring and controlling food temperature
AssigneeComputer Process Controls, Inc.
InventorsWilliam Gatling, Herb Rippe, Jim Chabucos, Abtar Singh
Life of this patent
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Abstract
A system and method for controlling refrigeration including a simulated product temperature sensor operable to measure a simulated product temperature from a refrigeration case and a transceiver in communication with said simulated product temperature sensor and operable to wirelessly transmit data. A receiver receives the wirelessly transmitted data and a controller in communication with the receiver controls the refrigeration system based upon the wirelessly transmitted data from the refrigeration case.
Claims21
A system for controlling refrigeration, comprising:
- at least one refrigeration case;
- a simulated product temperature sensor operable to measure a simulated product temperature from said at least one refrigeration case;
- a transceiver in communication with said simulated product temperature sensor and operable to wirelessly transmit data including said simulated product temperature;
- a receiver adapted to receive said wirelessly transmitted data including said simulated product temperature;
- a controller in communication with said receiver and operable to control a temperature of said at least one refrigeration case based upon said wirelessly transmitted data from said at least one refrigeration case.
2 more elements
A method for refrigeration system control, said method comprising:
- setting a maximum allowable product temperature for a circuit having at least one refrigeration case;
- determining a simulated product temperature for the circuit;
- wirelessly transmitting said simulated product temperature from said circuit to a system controller;
- calculating a difference between the simulated product temperature and the maximum allowable product temperature;
- and
- adjusting a temperature set point of the circuit based upon the calculated difference.
3 more elements
A method for refrigeration system control, said method comprising:
- measuring a first parameter from at least one refrigeration case;
- wirelessly transmitting said measured first parameter to a receiver;
- communicating said measured first parameter from said receiver to a controller;
- electronically controlling said at least one refrigeration case to affect said measured first parameter;
- measuring a second parameter from another refrigeration case;
- wirelessly transmitting said measured second parameter to said receiver;
- communicating said measured second parameter from said receiver to said controller;
- electronically controlling said another refrigeration case to affect said measured second parameter;
- and
- floating a circuit temperature set point based upon said measured first parameter.
7 more elements
A method for refrigeration system control, said method comprising:
- measuring a first parameter from at least one refrigeration case in a first refrigeration circuit;
- measuring a second parameter from at least one other refrigeration case in a second refrigeration circuit;
- wirelessly transmitting said measured first parameter and said measured second parameter to a receiver;
- communicating said measured first parameter and said measured second parameter to a controller;
- electronically controlling said at least one refrigeration case to affect said measured first parameter;
- electronically controlling said at least one other refrigeration case to affect said measured second parameter;
- and
- floating a circuit temperature set point of at least one of said first circuit and said second circuit based upon said measured first parameter or said measured second parameter.
5 more elements
A method for refrigeration system control, said method comprising:
- measuring a simulated product temperature measurement from at least one refrigeration case;
- wirelessly transmitting said simulated product temperature measurement to a receiver;
- communicating said simulated product temperature measurement to a controller;
- and
- electronically controlling said at least one refrigeration case to affect said simulated product temperature measurement.
2 more elements
A method for refrigeration system control comprising:
- measuring a first parameter from at least one refrigeration case;
- wirelessly transmitting said measured first parameter to a receiver;
- communicating said measured first parameter from said receiver to a controller;
- and
- electronically controlling said at least one refrigeration case to affect said measured first parameter
- measuring a second parameter from another refrigeration case;
- wirelessly transmitting said measured second parameter to said receiver;
- communicating said measured second parameter from said receiver to said controller;
- and
- electronically controlling said another refrigeration case to affect said measured second parameter;
- wherein said first parameter is a defrost termination temperature measurement of said at least one refrigeration case and said second parameter is an ambient case air temperature of said another refrigeration case.
8 more elements
A method for refrigeration system control comprising:
- measuring a first parameter from at least one refrigeration case in a first refrigeration circuit;
- measuring a second parameter from at least one other refrigeration case in a second refrigeration circuit;
- wirelessly transmitting said measured first parameter and said measured second parameter to a receiver;
- communicating said measured first parameter and said measured second parameter from said receiver to a controller;
- electronically controlling said at least one refrigeration case to affect said measured first parameter;
- and
- electronically controlling said at least one other refrigeration case to affect said measured second parameter;
- wherein said first parameter is a defrost termination temperature measurement of said at least one refrigeration case and said second parameter is an ambient case air temperature of said at least one other refrigeration case.
5 more elements
Dependencies are inferred from the claim text.