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1概述在工业发达国家，测力与称重系统常常采用电阻应变式负荷传感器作为一次敏感元件。把力值、重量和质量信号转换成微小电压信号。这种传感器转换精度高、线性好、结果型式多样，但它却需要高精度激励工作电压（0．01％F．S～0．002％F．S．），而且转换电压信号小（一般为1
1 Overview In industrialized countries, the load cell with strain gauge is often used as a sensitive element in load cells and weighing systems. Convert force, weight, and mass signals into tiny voltage signals. This sensor has high accuracy, good linearity and a great variety of results. However, it requires high precision excitation voltage (0.01% F.S ~ 0.002% F.S.), And the conversion voltage signal is small 1