微计算机停电时的处置措施（l） 设计微计算机时必须考虑的问题之一,是机器在停电（含瞬间停电）时的处置措施。 所谓停电处置措施,所含问题较多,不能同义而论。即要考虑其机器的使用国的、工作条件、环境条件、功能条件、以及机器的成本等因素,实施适合机器的停电对策。 一、停电措施的功能和方法 停电对策中并非是只有上述几种固定的方式,而是随时都要根据实际情况确立适合机器实际的措施,这样才会行之有效。这里,讨论一下一般情况下停电措施的功能及其方法。 图1—247示出停电时机器的处理流程。这里示出的是一般情况下的停电处理顺序。从功能方面看,大致可分为三个过程:停电检测、检测后的处理以及通电后重新开始工作。 二、停电检测 停电措施中最重要的功能,就是停电检测了。检测方法很多,其中可以考虑如下的方法:即在电源整流电路内设置停电检测电路,当因停电引起电压下降时,便向控制电 Micro-computer power outage measures (l) One of the issues that must be considered when designing a micro-computer is the disposal of the machine during a power outage (including a momentary power outage). The so-called power outage measures contain more problems, can not be synonymous. That is to consider the use of the machine’s country, working conditions, environmental conditions, functional conditions, as well as the cost of the machine and other factors, the implementation of power outage measures for the machine. First, the power outage measures function and method Power outage measures is not only the above several fixed way, but at any time according to the actual situation to establish suitable for the actual measures of the machine, so as to be effective. Here, to discuss the power outage under normal circumstances measures and methods. Figure 1-247 shows the processing flow of the machine during power outage. Shown here is the power outage processing sequence under normal circumstances. From the functional point of view, can be roughly divided into three processes: power outage detection, detection after the treatment and re-start work after power. Second, blackout detection Blackout measures the most important function is to test the power outage. There are many detection methods, among which the following methods may be considered: that is, a power failure detection circuit is provided in the rectifier circuit of the power supply. When the voltage is decreased due to the power failure,