Abstract: The differential resistance sensor is one of the most widely used equipment in safety monitoring engineering of dam. Aiming at its inherent characteristics, the safety monitoring system with low power consumption chip MSP430 and high precision sampling chip ADS1248 as the core is designed for measuring multiple differential resistance sensors and four-wire resistance temperature sensors. The result shows the system features good stability, low power consumption and high measurement accuracy, it offers the precise real time data for monitoring of dam safety.%差阻式传感器是大坝安全监测工程中应用最为广泛的设备之一.针对差阻式传感器自身的特点,设计了一种以低功耗MSP430芯片和高精度采样ADS1248芯片为核心的大坝安全监测系统.该系统实现了对多路差阻式传感器和四线制电阻温度传感器的测量.测试结果表明,该系统稳定性好、功耗低、测量精度高,能为大坝安全监测提供精确的实时数据.
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