故障报警电路在一些机械报警装置,尤其是在医疗器械中占有重要地位。现在市场上也出现了许多的故障报警电路,但都有一个缺点,就是不能对多个故障信号交替显示,最多也只是在众多的故障中显示一个优先级高的故障信号。本次设计是运用一些现成的数字集成元件搭建起来对故障进行交替显示。 Fault alarm circuit in some mechanical alarm devices, especially in medical devices occupy an important position. There are also many fault alarm circuits on the market today, but all have the disadvantage that multiple fault signals can not be displayed alternately and at most only a high priority fault signal is displayed in many faults. The design is the use of some ready-made digital integrated components set up to display the fault alternately.