电气柜逻辑测试仪通信系统

主要对地铁电气柜逻辑功能测试仪通信系统进行了研究和设计. 电气柜逻辑测试仪通信模块包括两部分: 系统层和管理层的通信以及管理层和测试层的通信. 在电气柜逻辑测试仪中, 系统层和管理层的通信数据量大、频率高, 采用CAN总线通信方式, 而管理层和测试层的通信距离近, 数据少, 采用RS485通信. 在硬件设计的基础上, 又设计了通信软件, 经现场调试, 设计的通信模块能够实现系统间的可靠通信.

Communication System of Electrical Cabinet Logic Tester

The communication module of subway electrical cabinet logic tester is researched and designed in this paper. The communication module of subway cabinet logic tester contains two parts: the communication between system layer and management layer, the communication between management layer and testing layer. In the cabinet logic tester, the communication between system layer and management layer has large amount of data and high frequency, so CAN bus is used, at the same time, the communication between management layer and testing layer doesn't have the problem of distance and has small amount of data, so RS485 is used. On the basis of hardware design, communication software is designed. According to site commissioning, the communication module designed enables reliable communication between systems.