Automated functional diagnosis
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United States of America Patent
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Dec 19, 2017
Grant Date -
Mar 6, 2014
app pub date -
Apr 11, 2012
filing date -
Apr 14, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is an HVAC (heating, ventilation and air-conditioning) system which comprises a fluid flow duct (1), a fluid flow valve (7) which is arranged therein and has a valve body (5) in the fluid flow duct (1) and a valve motor (15) which moves the valve body (5), a control circuit for activating the valve motor, a sensor (8) in the fluid flow duct (1) and an evaluation module for evaluating signals of the sensor. To produce an automated functional control, the following procedure is adopted: a first actuation signal is preset for the valve motor by the control circuit, and the actuation signal corresponds to a first setpoint position of the valve body (5), registration of a first signal of the sensor (8) by the evaluation module, and determination of a functional diagnosis of the fluid flow valve on the basis of the first signal of the sensor.
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