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一、绪言近三十年来,国际上已广泛应用电阻应变片制造传感器进行机械参量的测量。虽然这种传感器已能满足大部分测试工作的需要,但由于灵敏度低和不能适应参量的频率、振幅、线性范围要求等缺点,使其在郊外、现场和缺乏电子仪器的情况下不能解决精密机械中许多机械参量的测试问题。水银传感器在近十年中开始应用在工程技术中(如研究弹簧工作状态,机器的动力试验、金属形变等)。根据文献报导,水银传感
I. INTRODUCTION In the past three decades, the resistance strain gauges have been widely used in the world to make sensors to measure mechanical parameters. Although this sensor has been able to meet the needs of most of the test work, but because of low sensitivity and can not adapt to the parameters of the frequency, amplitude, linear range requirements and other shortcomings, making it in the suburbs, the scene and the lack of electronic instruments can not solve the problem of precision machinery Many mechanical parameters in the test question. The mercury sensor has been used in engineering technology for nearly ten years (such as studying spring working conditions, machine dynamic tests, metal deformation, etc.). According to the literature, mercury sensor