Method and control system for verifying sensor operation in a refrigeration system
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United States of America Patent
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Aug 20, 1985
Grant Date -
N/A
app pub date -
May 14, 1984
filing date -
May 14, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and control system are disclosed for checking and verifying sensor operation in a refrigeration system. A microcomputer control system determines whether a signal provided by the sensor is within normal limits prior to startup of the refrigeration system. Also, the microcomputer system verifies an out of bounds sensor signal provided to the microcomputer system from the sensor during operation of the refrigeration system by intermittently monitoring the sensor to determine whether a preselected consecutive number of out of bounds signals are provided to the microcomputer control system from the sensor. If the microcomputer control system determines that the signal provided by the sensor is not within normal limits prior to startup of the refrigeration system, or if the microcomputer system verifies an out of bounds signal provided by the sensor during operation of the refrigeration system, then the microcomputer control system generates an alarm signal to abort the startup or shut down the operation of the refrigeration system, respectively.
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