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METHOD FOR CALIBRATION OF SENSOR OUTPUT VOLTAGE ERROR IN ACCORDANCE WITH OUTPUT VOLTAGE TOLERANCE OF POWER
METHOD FOR CALIBRATION OF SENSOR OUTPUT VOLTAGE ERROR IN ACCORDANCE WITH OUTPUT VOLTAGE TOLERANCE OF POWER
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机译:功率输出容差的传感器输出电压误差标定方法
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摘要
A method for calibrating error of sensor output voltage according to the error of power output voltage is provided to calibrate the sensor output voltage automatically by storing a calibration value to a memory linked with a CPU and referring to the stored calibration value. A CPU receives reference voltage through a communicator and stores the reference voltage to a non-volatile memory(S101), and the CPU receives power output voltage of a power supply unit from a voltage measurer(S102). The controller calculates a voltage difference between the power output voltage and the reference voltage, and calculates calibration data by using the voltage difference as a variable(S104). The CPU calculates an average of the calibration data by repeatedly calculating the calibration data(S105). The CPU stores the average calibration data to the non-volatile memory106. The CPU reads the average calibration data from the non-volatile memory. The CPU receives sensor output voltage from a sensor unit and generates sensor data by converting the sensor output voltage into a digital signal. The CPU calculates a value of sensor data by using a conversion formula using the average calibration data and the sensor data as the variable.
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