作者：杨洪扣1, 刘军2, 李丽宏1
作者单位：1. 太原理工大学信息工程学院, 山西 太原 030024;
2. 山西省质量技术监督局, 山西 太原 030002
关键词：旋转编码器; 测速; 动态称重; 无线传输; USB; μC/OS-II
摘要：
开发一种基于旋转编码器的车辆行车状态无线监测装置,采用增量式旋转编码器作为速度测量元件,基于STM32F103VET6处理器与嵌入式实时操作系统C/OS-II进行系统监测装置的软硬件设计。比较目前几种常用的车辆测速方式的优劣,叙述车辆行车状态无线监测装置的工作原理及其架构,速度测量元件、监测装置的软硬件子系统的设计要点,给出软件流程图和行车状态实时监测曲线。根据现场的实验测试表明:该系统不仅架构简单、使用方便,而且具有良好的实时性、可靠性和测速分辨率等。
Wireless monitoring device of vehicle driving state based on rotary encoder
YANG Hong-kou1, LIU Jun2, LI Li-hong1
1. College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Shanxi Province Bureau of Quality and Technical Supervision, Taiyuan 030002, China
Abstract: A wireless device was developed for monitoring the vehicle driving state based on rotary encoder. The system used an incremental rotary encoder as the speed measuring element, and the software and hardware of the monitoring device were designed with the STM32F103VET6 processor and the embedded real-time operating system μC/OS-II. The merits of several common velocimetry ways for vehicle at present were compared. The working principle and the architecture of the wireless monitoring device were described, and the design points of the speed measurement and the subsystems of software and hardware were also described. The software flowcharts and the driving real-time status monitoring curve were given. Experimental results from field tests showed that the system not only was easy to use and had simple architecture, but also had the advantages of high real-time, reliability and velocity resolution.
Keywords: rotary encoder; velocimetry; dynamic weighing; wireless transmission; USB; μC/OS-II
2014, 40(3): 80-84 收稿日期: 2013-3-26;收到修改稿日期: 2013-5-28
基金项目:
作者简介: 杨洪扣(1987-),男,江苏盐城市人,硕士研究生,专业方向为散入式系统与单片机。
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