基于μC/OS-Ⅲ的整车式动态称重仪表

摘要

Aiming at the requirements of vehicle weighing accuracy and shaft type recognition rate in the highway toll system, by analyzing the characteristics of the full-vehicle dynamic weighing platform structure and weighing process,this paper put forward the wiring scheme of cantilever beam strain bridge weighing sensor and the hardware and software design solutions of full-vehicle dynamic weighing instrument.The segmentation of axle increasing process to identify axles and calculate single shaft weight based on the expert algorithm and the software implementations based on the embedded real-time kernel μC/ OS-Ⅲ were also discussed. The result shows that the instrument not only improves weighing accuracy and can accurately identify the vehicle axis without the aid of auxiliary equipment.%针对高速路收费系统对车辆称量精度及轴型识别率的要求，通过分析整车式动态称重秤台结构及称重过程的特点，提出了悬臂梁应变桥式称重传感器接线方案及整车式动态称重仪表的软硬件设计方案；论述了分割车辆上秤过程，识别车轴，计算单轴质量的专家算法及基于嵌入式实时操作系统μC/ OS-Ⅲ的软件实现。经测试该仪表不仅提高了称量精度而且不借助辅助设备能够准确识别车辆轴型。