随着科技的飞速发展,超声波测距技术得到越来越广泛的使用。文中以超声波技术为基础,采用CAN总线实现料位仪与上位机的数据通信,实现物料高度的测量。文中重点介绍了超声波料位仪主要功能模块特征,阐述了系统软件设计方法和过程,并进行了相关测试。结果表明:文中设计的系统功能较好,具有一定的应用价值。 With the rapid development of science and technology, ultrasonic ranging technology has been more and more widely used. The article based on ultrasonic technology, using CAN bus to achieve level instrument and PC data communication, to achieve the height of the material measurement. In this paper, the main features of the ultrasonic level gauge are introduced, the design method and process of the system software are expounded, and the related tests are carried out. The result shows that the system designed in this paper has good function and has certain application value.