公开(公告)号：AU4029601A

公开(公告)日：2001-11-08

申请号：AU4029601

申请日：2001-05-02

Applicant: EMERSON CLIMATE TECHNOLOGIES RETAIL SOLUTIONS INC

Inventor： GELBER SCOTT MICHAEL ,  SINGH ABTAR ,  AGGERS JOHN

IPC: F25B41/04 ,  F25D29/00 ,  G05D23/19 ,  G08C17/02 ,  G05D23/20

Abstract: A system and method for controlling refrigeration including a temperature sensor (50) operable to measure a temperature from a refrigeration case (22) and a transceiver (82) in communication with the temperature sensor and operable to wirelessly transmit data. A repeater receives the wirelessly transmitted data and further wirelessly transmits the data to a receiver (94). A controller (30) in communication with the receiver controls the refrigeration system based upon the wirelessly transmitted data from the refrigeration case. The refrigeration case also includes a mode switch for suspending temperature reading and control for a period of time. For example, the mode switch can be used by an operator during cleaning or maintenance of the refrigerator case.; Temperature control algorithms are used by the controller, and include: dead-band range (DB), proportional/integral (PI), proportional/integral/differentiation (PID) and fuzzy-logic (FL).