基于STM32的智能线性位移传感器信号处理系统设计

线性位移传感器（LVDT）是一种高精度、高可靠性的直线位移传感器，广泛应用于工业自动化领域中的位移测量系统中。针对目前的传感器存在线性度和智能性偏低的问题，设计了以AD698为模拟调理系统核心用以处理LVDT信号，以STM32F407作为数字调理系统核心用以计算AD698的输出的采样信号。采用模拟信号和数字信号相结合的方案，综合了模拟信号处理率的高可靠性、高适应性和数字信号处理器中进行非线性拟合解决非线性的优点。实验结果表明该系统具有设计结构简单、功能强大、性价比高以及易操作等优点。

Design of signal processing system for intelligent linear displacement sensor based on the STM32

LVDT linear displacement sensor is a high precision, highly reliable linear displacement transducer, widely used in the displacement measurement system in the field of industrial automation. Currently, there is a common problem that the linearity and intelligence performance of the sensor is on the low side, for that reason, the AD698 is choose as of the core of simulation control system, with STM32F407 as the core of the digital control system. In order to realize the high dependability and adaptability of analog signal rate and reach the advantages of solving nonlinear by digital signal processor, we adopt the scheme of the combination of analog signal processing and digital signal processing. The experiments show that the system has advantages of simple design structure, powerful function, high cost performance, easy operation etc.