CN2144600Y - 汽车防盗、防劫持报警装置 - Google Patents

汽车防盗、防劫持报警装置 Download PDF

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CN2144600Y
CN2144600Y CN92239275U CN92239275U CN2144600Y CN 2144600 Y CN2144600 Y CN 2144600Y CN 92239275 U CN92239275 U CN 92239275U CN 92239275 U CN92239275 U CN 92239275U CN 2144600 Y CN2144600 Y CN 2144600Y
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circuit
mouth
car
switch
integrated circuit
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CN92239275U
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叶慧秀
江永年
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Abstract

本实用新型涉及一种汽车防盗、防劫持报警器, 具有门开关和点火开关及劫持开关触发的双单稳态 集成电路。该电路经过可控硅或时基电路控制继电 器工作切断火花塞电路或/和接通喇叭电路,从而实 现被盗、被劫持时的报警和自动熄火停车。

Description

本实用新型涉及汽车防盗、防劫持报警装置,特别涉及车辆被盗、被劫持后车辆自动熄火并鸣响喇叭的报警装置。
现有的车辆防盗、防劫持报警装置都是在盗车、劫持车发生时报警,它具有许多缺点,例如报警装置报警而车辆可以继续行驶,这样不能完全避免盗车的发生;此外,特别是当劫持车辆发生时,如报警器立即报警可能会对司机的生命构成危协。
本发明的目的在于提供一种汽车防盗、防劫持报警器,当盗车人打开车门或打碎玻璃进入车内并启动点火开关一定长时间后,汽车喇叭鸣响并自动熄火;此外遇有人劫持车辆,司机离开车前启动一开关,经过一定长时间后车辆自动熄火。
当司机本人使用车辆时,在开门、启动点火开关后,压下报警器上的密码键或开关,车辆便可以正常行驶。
在本实用新型中,点火开关(或门开关)K1触动双单稳态集成电路IC1的触发端1,触动IC1的一个单稳态电路,该电路的稳态时间为30秒,30秒后,将触动IC1的第二个单稳态电路,该第二个双单稳态电路由其输出端2向可控硅D1的控制极输出一电压信号,可控硅D1接通继电器的电路使继电器工作接通开关K2,喇叭鸣响报警,同时继电器工作切断发动机火花塞电路,使发动机熄火。
当车辆被劫持时,司机触动开关K3,双单稳态集成电路IC2的触发端4被触发,IC2的输出端5输出一低电平,这个低电平使IC2的输出端5输出一低电平,这个低电平使IC2的使能端3为低,从而失去作用,这样做的目的在于当劫持事件发生后,使得喇叭报警失效,这是因为IC1的延时为30秒,司机遭劫离开车后,30秒内汽车喇叭报警并熄火,会使司机有生命危险。当开关K3关合后,IC2在输出端5输出一个高电平,触发时基电路IC3,经过5分钟的稳态时间后,IC3的输出端7处保持一个低电平使继电器工作,切断发动机火花塞电路,使发动机熄火。
当司机进入车辆后,司机在密码键T1上按压预定密码,由四双二输入与非门集成电路IC4的输入端输入信号,由密码电路 经二输入与非门输出的高电平使回路电流为“近于零”,切断可控硅电路的电流通路,喇叭失效,同时,这个高电平使IC5的输出为高,继电器不动作,汽车不熄火,车辆可正常行驶。
附图是本实用新型装置的电路原理图。
本实用新型不仅可以在发生盗车或劫车时自动熄火,还可以延时熄火,保证其他人员安全。

Claims (3)

1、一种汽车防盗、防劫持报警器,该报警器具有门开关及点火开关触发的双单稳态集成电路IC1和劫持开关触发的双单稳态集成电路IC2,IC2的输出端经时基电路IC3触发继电器,其特征在于IC1的输出端与可控硅的控制极,可控硅的正极与可切断火花塞电路和接通喇叭的继电器连接。
2、根据权利要求1的报警器,其特征在于密码键控制启动的四双二输入与非门集成电路的输出端提供了可切断可控硅的高电平。
3、根据权利要求1或2所说的报警器,其特征在于IC1和IC2的稳态时间分别为30秒和5分钟。
CN92239275U 1992-11-05 1992-11-05 汽车防盗、防劫持报警装置 Expired - Fee Related CN2144600Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN92239275U CN2144600Y (zh) 1992-11-05 1992-11-05 汽车防盗、防劫持报警装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN92239275U CN2144600Y (zh) 1992-11-05 1992-11-05 汽车防盗、防劫持报警装置

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CN2144600Y true CN2144600Y (zh) 1993-10-27

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CN92239275U Expired - Fee Related CN2144600Y (zh) 1992-11-05 1992-11-05 汽车防盗、防劫持报警装置

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CN (1) CN2144600Y (zh)

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