1、 本 科 毕 业 设 计 （ 论 文 ） 基于单片机的超声波车用钢板测厚系统基于单片机的超声波车用钢板测厚系统设设 计计 学院名称： 汽车与交通工程学院 专 业： 汽车服务工程 班 级： 学 号： 姓 名： 指导教师姓名： 指导教师职称： 讲 师 二一七年六月 i 基于单片机的超声波车用钢板测厚系统设计 摘 要：汽车钢板在汽车长期运行的过程中会因各种原因发生锈蚀，严重的锈 蚀会引起钢板断裂，进而对行车安全造成极大隐患，因此对汽车钢板厚度进行定 期测量十分必要。此外，在汽车的生产过程中，同样要对其钢板厚度进行测量， 由此来检测所用的钢板是否符合要求。 本课题在对比了目前用于厚度检测的多种 方法的
2、基础上，选择了基于单片机的超声波车用钢板测厚系统进行了重点研究。 所设计的测厚系统采用超声波脉冲回波法对钢板厚度进行测量，具有结构简单、 操作方便等优点。测厚系统的硬件与软件设计是本课题的重点。其中硬件设计部 分包括 STC89C52 模块、超声波发射与接收模块、独立按键模块、温度补偿模块 和电源模块。软件设计部分采用 C 语言编写软件程序，程序包括主程序部分、计 数器部分、键盘部分和温度补偿部分。 关键词：超声波；单片机；测厚 Design of an Ultrasonic Automotive Steel Plate Thickness Measurement System Based o
3、n Single Chip Microcomputer Abstract：Automotive steel plate will be corroded for various reasons during the long time running process, and serious corrosion can cause possible steel plate fracture. It is necessary to carry out regular measurement of the automobile steel plate thickness owing to the
4、safety problem. Besides, there is also a need for the thickness measurement of the automobile steel plate during the manufacturing process to check if the used steel plate can meet the production requirements. In this work, different thickness measurement methods are compared and ultrasonic automoti
5、ve steel plate thickness measurement system based on single chip microcomputer (SCM) is chosen as an ideal solution due to its advantages including simple structure and easy operation. The present thickness measurement system has employed the ultrasonic pulse echo method as the thickness measurement
6、 technology. Both the hardware and software designs are given. The hardware design part includes the STC89C52 module, ii the ultrasonic transmitter and receiver module, the independent key module, the temperature module and the power module. The software design part is finished in the form of C language software program, and the program includes the main program part, the counter part, the keyboard part and the te
