High-accuracy pressure measurement system circuit diagram composed of intelligent dual-channel sensor signal processor MAX1463

Published:2012/11/29 0:50:00 Author:Ecco | Keyword: High-accuracy , pressure measurement system , intelligent , dual-channel sensor, signal processor | From:SeekIC

Bridge pressure sensor's output voltage is connected to the MAX1463 IN1+ IN1-side. Under CPU control, pressure signal is converted by nonlinear calibration, temperature compensation and ADC conversion, then it is sent to 80C51 MCU after being output from the serial interface; DAC also can convert it to the analog output voltage Uo, then it is sent to a digital voltmeter to show the measured pressure value. GPI01 universal digital I/O interface pin is connected to failure alarm, and the leader of sensor is open or CPU occurs overflowing, it can drive the buzzer alarm to emit sounds.



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