Conditioning circuit and method for variable frequency sensor

摘要: A conditioning circuit includes a computer connected to pressure transducer having variable frequency oscillator the output signal of which varies with pressure, temperature sensor, read only memory storing constants are dependent upon particular and application, counter count when gated. In accordance disclosed method, obtains digital indicative by gating for predetermined interval, converts an analog from sensor signal, then computes linearized, compensated in function utilizes stored initially scale translate maximum accuracy, corrects nonlinearities variations temperature. The computed appears at as binary word accurately representing sensed over wide range.