一种防止忘拔钥匙的报警电路
申请公布号:CN203630931U
申请号:CN201320862262.X
申请日期:2013.12.25
申请公布日期:2014.06.04
发明人:杨洁
分类号:G08B21/24(2006.01)I
主分类号:G08B21/24(2006.01)I
代理人:刘学诗
地址:563000 贵州省遵义市上海路830号
摘要:一种防止忘拔钥匙的报警电路,包含检测电路、处理电路和报警电路;所述的检测电路主要包含红外对管U1和电压比较器集成电路U2,U1的输出端经过电阻连接U2的正极,U2的输出电平与U1输出电平相反;所述的处理电路主要包含可编程芯片U3,U3的输入端连接U2的输出端,当U3的输入端为高电平时根据储存的程序延时后输出间断的高电平。这种防止忘拔钥匙的报警电路是以红外对管为光控开关的报警电路,便于实施在各种门体等安装有锁的地方,结构简单,报警准确。
主权项:一种防止忘拔钥匙的报警电路,包含检测电路、处理电路和报警电路;其特征是:所述的检测电路主要包含红外对管U1和电压比较器集成电路U2,U1的输出端经过电阻连接U2的正极,U2的输出电平与U1输出电平相反;所述的处理电路主要包含可编程芯片U3,U3的输入端连接U2的输出端,当U3的输入端为高电平时根据储存的程序延时后输出间断的高电平。
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