基于总线技术的分布式板上MOS管老化系统设计  

Design of the Distributed Aging System of MOS Transistor on Circuit Boards Based on Bus Technology

作　　者：袁霄[1,2] 潘玉良[1,2] 凌在盈[1,2] 

机构地区：[1]杭州师范大学遥感与地球科学研究院,浙江杭州311121 [2]浙江省城市湿地与区域变化研究重点实验室,浙江杭州311121

出　　处：《杭州师范大学学报（自然科学版）》2012年第2期103-106,141,共5页Journal of Hangzhou Normal University(Natural Science Edition)

摘　　要：由于MOS管是浅结系列器件,极有可能在产品的生产流程中遭到静电击穿或半击穿而损坏.为保证产品的可靠性,设计了一款基于总线技术的分布式板上MOS管老化系统.该系统模拟实际负载对产品中的多路MOS管的承载能力进行巡检测试,并以RS485总线构成网络平台对批量产品在线监测,从而有效地保证产品质量.文中给出了系统智能检测装置的软硬件设计及RS485总线的通讯协议描述.经过实际应用,该系统运行稳定,可在一定范围内推广.The MOS transistor is very likely to be damaged by the electrostatic breakdown or half breakdown in the production process because it is shallow junction device. In order to ensure the reliability of the products, a distributed aging system of MOS transistor on circuit boards based on bus technology is designed. The system simulates the actual load of the products to test the bearing capacity of the multiplex MOS transistors, and online monitors batch products through the network platform constituted by RS485 bus to ensure the product quality effectively. This paper gave the software and hardware design of intelligent detection device and the description of communication protocol of RS485 bus. The practical application of the system shows the system operates stably and has been extended in a certain range.

关 键 词：RS485总线 ARM MOS管老化 故障保护 

分 类 号：TP227[自动化与计算机技术—检测技术与自动化装置]