一种VXI机箱电源监控模块的研制

A Kind of Power Monitoring Module for VXI Mainframe

针对目前VXI机箱电源部分器件容易老化,经常出现故障,使VXI机箱系统陷入瘫痪状态,而它的维修费用特别高,为此需要自行研制一款VXI机箱电源;根据VME总线系统规范要求,必须自主研制一种实用的VXI机箱电源监控模块;该电源监控模块通过交流检测和上电监视来进行监控工作,为了达到总线规范要求的时序关系,对时序控制电路进行了专门的设计,这也是监控功能的核心部分;它能实时监控交流电源故障情况和上电复位情况,并在实际应用中对VXI机箱电源起到了很好的监控效果;该模块的成功研制,为VXI机箱的整机研究迈出了关键一步。

The VXI mainframe is often out of work when its power breakdowns because the parts of VXI mainframe power have been aged. The VXI mainframe power must be developed renewedly because of its high maintenance cost. According to VMEbus system specifi- cation, a practical kind of power monitor module must be developed firstly. This module can monitor the power through AC detection and power-up watching. The time sequence control circuit is designed specially as the core of the whole circuit in order to satisfy the time sequence of VMEbus system specification. It can monitor the AC failure and the DC power-up reset in time, and do well in application to VXI mainframe. The successful research of this module is the key step of VXI mainframe research.