為了解決用電安全隱患。該系統以電磁感應線圈和變壓器的輸出電壓為檢測用電發
生漏電、過載、短路和超壓故障時的取樣電壓信號,通過8051 單片機控制，運用HD44780
字符液晶顯示模塊和由ISD2650 語音芯片，使其具有字符提示和語音提示，在嚴重故障時又能自動提前跳閘。改變了目前的漏電保護器和過載保護器功能單一，故障出現時沒有任何提示等缺點。 經大量實驗證明單片機多功能用電故障控制器具有性能穩定、安全、可靠是理想的用電保護提示器。
關鍵詞；磁感線圈；8051 單片機芯片；HD44780 字符液晶顯示模塊；ISD2650 語音芯片

Abstract: Uses output voltage of the electromagnetic induction coil and transformer as voltage signal of the examination family has the leakage, the overload, the short circuit and presses when the breakdown , through 8051 MCU controlling, utilizes the HD44780 character LCD module and the ISD2650 speech chip, enables it to prompt the character and the voice, when serious failure can automatic advance trip. To change the unitary function of leakage protector and the overload protector, the breakdown appears when shortcomings and so on any prompt, make the family electricity safelier and reliabler.
Key words: Magnetic induction coil; 8051 MCU controlling; the HD44780 character LCD
module ;ISD2650 speech chip