基于EPA通信的超声波物位计开发

Design of ultrasonic position instrument based on EPA communication

EPA是我国工业自动化领域第一个拥有自主知识产权并被国际电工委员会(IEC)认可的国际标准。介绍了EPA超声波物位计的系统设计、EPA通信卡的开发、标准化的内联协议与高精度测量技术。通过采用双CPU技术开发的EPA超声波物位计,不仅全部达到了物位检测的相关技术指标,而且通过了EPA协议一致性、互操作性和通信性能测试,测试表明采用双CPU技术开发的EPA超声波物位计具有总线供电、低功耗等特点。

EPA is the first standard with our own Intellectual Property and certificated by IEC in automatization in China. Using two CPU in the design of EPA Ultrasonic Position Instrument the result reaches the position detecting guild line and passes the test of the EPA coherence, EPA operation test and EPA communication test. The design has many characteristics such as power supplied by bus and lower consumption and so on. This article introduces the system design of EPA Ultrasonic Position Instrument, EPA communication card, standard protocol and high precision technology of measurement.