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实用新型
CN204695069U 一种用于专变采集终端防止遥控误跳闸的控制电路 失效 - 放弃

一种用于专变采集终端防止遥控误跳闸的控制电路
摘要：
本实用新型涉及一种用于专变采集终端防止遥控误跳闸的控制电路。复位芯片分别接系统CPU和第一与非门，第一与非门接第二与非门，第二与非门接RS触发器电路，RS触发器电路接第五与非门，第五与非门接D触发器；CPU的I/O口第一线YK_EN1接第一与非门并经下拉电阻R4接GND；CPU的I/O口第二线YK_EN2接第四与非门并经上拉电阻R3接VCC；D触发器接CPU的遥控输出控制管脚，D触发器接光电隔离电路，光电隔离电路经驱动电路连接继电器。复位芯片只用在系统电压正常、系统程序运行正常时才能输出高电平，故此能确定无错误跳闸命令发出。
摘要（英）：

The utility model relates to a control circuit for monopolizing become acquisition terminal and prevent remote control mistrip. The chip that restores to the throne connects CPU of system and first NAND gate respectively, and first NAND gate connects the second NAND gate, and the second NAND gate connects the RS flip -flop circuit, and the RS flip -flop circuit connects the 5th NAND gate, and the 5th NAND gate connects the D trigger, CPU's IO mouth forefront YK_EN1 connects first NAND gate and meets GND through pull down resistor R4, CPU's IO mouth second -line YK_EN2 connects the fourth NAND gate and meets VCC through pull -up resistance R3, the D trigger connects CPU's remote control output control pin, and the D trigger connects the optoelectronic isolation circuit, and the relay is connected through drive circuit to the optoelectronic isolation circuit. The chip that restores to the throne only is used in that system voltage is normal, could the output high level during system program normal operation, so can confirm error free mistrip order and send.

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