The precise pressure detection system circuit composed of the dual-channel intelligent sensor signal processor MAX1463

Published:2011/6/24 21:20:00 Author:qqtang | Keyword: pressure detection, dual-channel, signal processor | From:SeekIC

The output voltage of bridge pressure sensor is linked with the IN1+ and IN1- terminal of MAX1463. Under the control of CPU, the pressure signal is linearly adjusted, temperature-compensated and D/A converted, then it is delivered to the 80C51 single chip machine; it is also converted into the analog output voltage Uo by DAC and sent to the digital voltmeter, then the pressure value is indicated. The GPI01 pin of general D/A connector is connected with the fault alarm, when the wire of the sensor is broken or the CPU is overflowing while it is executing the programs, the buzzer is driven and rings.



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