Driving Circuit Design of Vibrating Wire Sensor Based on Frequency Sweep Mode

In order to meet the needs of monitoring the pressure and tension of the construction site, a high-precision low-cost driving circuit of vibrating wire sensor is designed. In order to simplify the driving circuit, a single power supply is used to solve the problem of negative power supply that we do not want to face. The STM32 microcontroller is used as the main control chip to realize the overall control of the system. The control mode of frequency sweep stimulation is adopted to realize the fast excitation of the vibrating wire sensor, and the equal precision frequency measurement method is used to read the resonant frequency of the vibrating wire sensor accurately.