测试系统通信网关的研制

发布时间：2018-01-14 22:05

本文关键词：测试系统通信网关的研制　出处：《北华航天工业学院》2017年硕士论文　论文类型：学位论文

【摘要】：随着网络的迅速发展,更多的测试仪器接入网络。通过网络可以方便的对仪器进行远程控制,便捷地采集、传输和显示来自远程仪器的各种数据,网络化测试成为必然的趋势。GPIB接口标准普遍应用在仪器仪表中,尤其是在国外,仪器大都配备了GPIB接口,而国内的仪器大都配备了RS232串行通信接口。考虑到成本等多方面的因素,在不更换现有设备的条件下,将这些带有GPIB接口或RS232接口的设备连入Internet,组建网络化测试系统,最简单的方法就是使用GPIB-Ethernet以及RS232-Ethernet接口转换器。本课题将开发研制一款通信网关,兼具GPIB-Ethernet及RS232-Ethernet接口转换功能,将测试现场的仪器设备接入Internet,提高测试测量的自动化程度。本文就开发测试系统通信网关的硬件、软件设计及实现进行了深度解析。硬件电路设计主要包含以下几个模块:微处理器外围电路、电源电路、JTAG接口电路、外扩SRAM电路、RS232接口电路、以太网接口电路、GPIB接口电路。软件编程主要包括RS232接口通信、以太网接口通信、GPIB接口通信程序以及协议转换程序的编写。最后,通过GPIB设备通信助手和串口转以太网调试助手分别对三个接口进行了测试,测试结果验证了三个接口均能正常通信并实现转换功能。
[Abstract]:With the rapid development of the network, more testing instruments can be connected to the network. Through the network, the instrument can be conveniently controlled, collected, transmitted and displayed from remote instruments. Network testing has become an inevitable trend. GPIb interface standards are widely used in instrumentation, especially in foreign countries, instruments are mostly equipped with GPIB interface. The domestic instruments are mostly equipped with RS232 serial communication interface. Considering the cost and other factors, without replacing the existing equipment conditions. These devices with GPIB interface or RS232 interface are connected to Internet to build a networked test system. The simplest way is to use GPIB-Ethernet and RS232-Ethernet interface converter. This subject will develop a communication gateway. With the functions of GPIB-Ethernet and RS232-Ethernet interface conversion, the instrument and equipment in the test site are connected to Internet. This paper develops the hardware of communication gateway of test system. The hardware circuit design includes the following modules: microprocessor peripheral circuit, power supply circuit, JTAG interface circuit, and extended SRAM circuit. RS232 interface circuit, Ethernet interface circuit GPIb interface circuit. Software programming mainly includes RS232 interface communication, Ethernet interface communication. GPIB interface communication program and protocol conversion program. Finally, the three interfaces are tested through GPIB device communication assistant and serial port to Ethernet debugging assistant. The test results verify that the three interfaces can communicate normally and realize the conversion function.
【学位授予单位】：北华航天工业学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN915.05

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