串口嗅探技术研究  

Sniffer technology of serial port communication

作　　者：张胜[1] 李瑞民[1] 

机构地区：[1]上海文化广播影视集团技术运营中心,上海200041

出　　处：《电视技术》2016年第7期36-39,共4页Video Engineering

基　　金：上海市广播电视台项目("播出智能监管与应急辅助系统")

摘　　要：串口的广泛使用,得益于小到单片机,大到多核CPU的直接支持,所以在设备中,特别是广电行业设备中,不仅不会消失,而且还会长期存在。然而串口通信具有独占性,一旦一个监控程序占用了某个串口,则另外的程序无法使用该串口,这对于二次开发、第三方监控、设备共享、硬件设备的调试和测试都十分不利。所以,对串口嗅探技术的研究是有必要的,目前国内尚无人对此做出过研究,通过三个层次,共提出五种串口嗅探技术,每一种串口嗅探技术都有自己独特的地方,但也都有不足之处,但无论是功能上,还是性能上都可以满足串口嗅探的功能。最后,通过程序的设计和测试,验证了方法的可能性。Serial port （COM） interface has been used in communication field between computer and device in widely common us- age, supported from microcontrollers to multi-core CPU. So in the equipment communication interface, especially the broadcast and television industry equipment, transfer data by serial port is not only will not disappear, but also long-term existence. Howev- er, the communication from serial port is exclusive, once a monitoring program occuPies a serial, another program cannot use this serial port at the same time, it is not advantage of using for some aspect, for example, the secondary development, the third party software monitoring the same serial port, serial port sharing of device, and debugging and testing a device from serial port. So it~ necessary to research the technology of serial port sniffer, there is no such studies have been made in such aspect. In this paper, it put forward a total of five serial port sniffer technologies, each one has its own unique feature, at the same time it has some short- comings. Finally, through the design and testing of a special software program, it proves both functionality and performance are feasible and effective.

关 键 词：串口嗅探 设备监控 独占性 中继 串口通信 

分 类 号：TN919.83[电子电信—通信与信息系统]