基于单片机的电缆导通测试方法 

Cable Conductivity Evaluation Based on Single-Chip Microprocessor

摘要:

文章介绍了一种基于单片机的电缆导通测试方法。该方法以小型化、智能化为目标,采用了嵌入式设计,不仅使测试系统的体积大幅度降低,而且使操作界面更加简洁方便；系统采用C8051F120单片机做为核心控制器,以及技术成熟的万用表作为测量模块；通过设计接口电路,实现了单片机与液晶显示模块、微型打印机模块和键盘模块的互通；通过使用移位寄存器和继电器阵列,系统也实现了多个通道间的切换；系统用单片机驱动外部测量模块,完成了某型伺服系统电缆束的导通、不导通的测试；该测试方法改变了一直以来电缆导通测试需要依赖人工手动测试的现状,同时提高了测试的效率和准确性。

Abstract:

An improved methodology for cable conductivity evaluation is introduced in this paper. Aiming for miniaturization and intelligence while taking advantage of embedded design, the proposed methodology not only reduces the physical size of experimental system significantly but also makes user interface simpler and more convenient to use. C8051F120 chipset is utilized as central processing unit; in the meantime, the technically mature and fully-fledged multi-meters are used as measurement module. Through carefully designed interface circuit, the inter-communication among the processing chip, LCD monitor, micro-printer and keyboard is achieved. By adopting arrays of relays and shifting registers, the multi-channel switching is realized. The conductivity and non-conductivity evaluation of a servo system is accomplished by the system using the single-chip processor which drives external measurement modules. The methodology changes the present situation that cable conductivity evaluation relies heavily on labor while improves the accuracy, efficiency and effectiveness of the evaluation.