基于激光位移传感器的厚度测量校准系统设计及应用

Design and application of thickness measurement calibration system based on laser displacement sensor

为了提高钢板厚度校准的精度和安全性,针对传统接触式测厚仪精度低和射线类测厚仪存在辐射风险的问题,设计了一种基于激光位移传感器的差分非接触厚度测量校准系统。该系统采用差分测量结构,将激光位移传感器分别放置在待测钢板的顶部和底部,通过对传感器数据的采样和计算,实现钢板厚度的准确测量。硬件电路方面采用了STM32核心芯片进行设计,系统软件部分进行了相应的优化设计。试验后,系统重复性精度可达±0.1%,测量允许误差优于±0.05%,同时测量漂移控制在钢板厚度的±0.1%范围内。该系统不仅显著提高了测量精度,同时有效降低了测量过程中的安全风险,在钢板生产和加工领域具有重要的指导意义和应用价值。

In order to improve the accuracy and safety of steel plate thickness calibration by addressing the issues of low precision in traditional contact-type thickness gauges and the radiation risk associated with radiation-based thickness gauges,a differential non-contact thickness measurement and calibration system based on laser displacement sensors was designed.The system adopts a differential measurement structure,and the laser displacement sensors are placed on the top and bottom of the steel plate to be measured respectively.The thickness of the steel plate is accurately measured by sampling and calculating data from the sensors.The hardware circuit is designed using an STM32 core chip.The software part of the system is also meticulously developed.Experimental results demonstrate that our proposed measurement system exhibits outstanding performance.The repeatability accuracy reaches±0.1%,the measurement tolerance is better than±0.05%,and the measurement drift is within±0.1%of the steel plate thickness.The system not only significantly improves measurement accuracy,but also effectively reduces the safety risks in the measurement process which has important guiding significance and practical value in the field of steel plate production and processing.