但是有一个故障：电流超限，电源板无法工作，造成饥饿的食客瞬间恐慌。
But there's a hitch: the electrical circuit has overloaded, and the power strip isn't working, causing momentary panic among the hungry diners.
利用小波变换检测突变信号的原理，可以在电力系统故障发生的瞬间快速检测出电流或电压突变信号。
According to the theory of testing abrupt signals with wavelet transformation, the abrupt signals of current and voltage can be quickly detected when power system faults occur.
主要针对UPS蓄电池段电压不够、容量不足或瞬间放电电流不满足带载启动要求等问题。可以延长蓄电池的使用寿命，降低UPS系统故障率。
It can extend the life of battery and decrease ups system failure rate to the problem of under-voltage, low capacity and discharge current not meeting load startup request.
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