| 摘要 |
A pressure sensor is provided by a bridge circuit on a semiconductor diaphragm, with diaphragm deflection being effective to produce an output voltage proportional to the deflecting force. A constant current source is coupled to the energizing terminals of the bridge circuit. By measuring the voltage drop across the semiconductor bridge during operation, an output signal indicative of bridge temperature is obtained. Accordingly two output signals, pressure and temperature, are derived from a single bridge sensor. This produces a compact, accurate transducer assembly for use in an automotive control system, providing two control signals from a single sensor structure. |
