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针对油井压力测试，文章以振弦式压力传感器作为传感元件，设计出一种适合与PC机接口的数据采集电路。由于采用了有源LC谐振放大电路及通过脉冲周期测量来检测传感器振动频率，从而大大增强了接口的抗干扰能力，提高了压力测试精度。文章还对振弦压力传感器的工作原理进行了分析。
Aiming at the pressure test in oil well, the article uses the vibrating wire pressure sensor as the sensing element to design a data acquisition circuit suitable for interface with PC. As a result of the active LC resonant amplifier circuit and pulse period measurement to detect the sensor vibration frequency, thus greatly enhancing the anti-interference ability of the interface to improve the pressure test accuracy. The article also analyzes the working principle of the vibrating wire pressure sensor.