The present invention provides a sensor
control system for a
refrigerant recovery machine, and relates to the technical field of
data processing. The method comprises: receiving an operation instruction of a user through a control panel, and controlling an
AC motor to drive a compressor to operate according to the operation instruction, collecting temperature data,
pressure data and flow data through a temperature sensor, a
pressure sensor and a flow sensor, and calculating the temperature change amplitude, pressure change amplitude and flow fluctuation amplitude at adjacent time points, obtaining scores between two, constructing a correlation
score matrix, judging the change trend of temperature, pressure and flow, adjusting a preset threshold range group, obtaining a dynamic threshold range group, and generating an
alarm signal when the detection
data set is not within the dynamic threshold range group, adjusting the operating parameters of the
AC motor, and generating a maintenance
signal and fault state operating data of the compressor. The present invention can control the operating state of the
refrigerant recovery machine through the data detected by the sensor.