Stress-strain gauge applied to hydrological lead fishway bottoming sounding system

The invention provides a stress-strain gauge applied to a hydrological lead fish cableway grounding sounding system. The stress-strain gauge comprises a weighing module and a weighing sensor connectedwith the weighing module, the weighing module comprises a chip U7, an excitation power supply module, an operational amplifier module, an ADC module and a communication module are arranged in the chip U7, and an excitation power supply and an operational amplifier are respectively connected with a power supply end and a signal end of the weighing sensor. A grounding signal is obtained through resistance change caused by deformation of the strain gauges before and after contacting the river bottom, and the water depth is measured through the mounted counter, so that the problem of signal instability caused by the depth of the river bottom is avoided. 本发明提供了一种应力应变计应用于水文铅鱼缆道触底测深系统；包括称重模块及与称重模块连接的称重传感器，所述称重模块包括芯片U7，芯片U7内置激励电源模块、运算放大器模块、ADC模块、通讯模块，所述激励电源和运算放大器分别与称重传感器的电源端和信号端连接。本发明通过应变片在接触到河底前后的形变导致的电阻变化来要得到触底信号，通过安装的