基于振弦式传感器的测频系统设计研究

为确保监测振弦式传感器数据采集的准确性,提出了一种用多周期测频的方法,来实现振弦式传感器频率的测量.同时设计出了具体的硬件电路,系统硬件分为3个模块单元:温度补偿电路、测振电路、激振电路、应用AT89C52单片机来达到对多周期测频方案的实现、实用电路,该电路具有的特点为:测频范围宽和测量精度高等,并且应用AT89C52...

Vibrating Wire Sensor Based on Frequency Measurement System Design

To ensure monitoring of vibrating wire sensor data acquisition accuracy,this paper proposes a frequency measurement with a multi-cycle approach to achieve vibrating wire sensors frequency measurements.It also designs a specific hardware circuit,and system hardware consisting of three modular units: temperature compensation circuit,vibration measurement circuit,and excitation circuit.Application of AT89C52 microcontroller to achieve the multi-period measurement of frequency of implementation of practical circuits,the circuit has a bit to: wide range of measurement frequency and measurement precision,and the application of AT89C52 microcontroller to implement the intelligent control of the excitation frequency.Frequency measurement systems thinking to the hardware circuit optimization,simple,easy to implement,exciting,reliable,controllable excitation frequency greatly reduces the temperature of the vibrating wire sensors frequency measurement error,using the temperature compensation to improve the measurement accuracy.The circuit can also be used for landslide disasters,and the prevention of debris flow detection.