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XXX: Car Anti-theft Alarm System
Currently。XXX 60 n cars are sold worldwide every year。with a total of over 400 n in use。As the number of vehicles increases。so do the number of traffic accidents and car thefts。resulting in personal injury and economic loss。People have XXX has XXX issue。In order to ce car accidents and give car owners a sense of security。it is of great XXX a safety system that is easy to operate。automatically detects the safety status of each part of the car。and alerts the driver with an alarm in case of XXX.
Cars are of high value。and with the increasing number of cars。they have e the primary target of XXX。us anti-XXX。thieves can easily open the doors and drive away the car with a XXX。the problem of car theft has not been XXX。there are several ways to prevent car theft:
1.Mechanical anti-theft: XXX is to lock a certain part of the car with a lock。making it unabl
e to n properly。There are several existing anti-theft methods。such as gear shift lock。XXX。brake pedal lock。XXX。the XXX lock is bulky and the car owner needs to carry an extra key。Moreover。there are many ways to crack the lock。and it cannot。nal car XXX the key is also one of the possibilities of car theft.
In n。the development of a reliable and easy-to-use car anti-theft alarm system is of great XXX.半导体胶水
二、汽车防盗措施
电子防盗是目前汽车市场上最常用的防盗措施之一。它通过启动防盗系统来切断点火线圈和供油回路，只有在解锁钥匙的控制下才能将防盗正常解除。这类防盗产品种类繁多，国内外大部分小轿车在出厂时就已经配置了钥匙芯片防盗系统。这种系统利用钥匙中的芯片发射无线电与本车的ECU接通后就能启动汽车发动机。此外，还有声光报警系统，它在汽车仪表盘上装有一种发光二极管，能让车主知道系统工作状态，同时对窥探车内的偷车贼起到精神上的压力作用。当汽车因为外力而发生震动或者车门、后盖、前盖被强行打开时，系统会发出报警声，以阻吓盗车者。更有一种双向报警系统，它比一般的发光和声音实木花盆
报警系统多一个能够通知车主的功能。当汽车遭到外界影响时，人在附近的车主就能通过随身携带的一种液晶显示钥匙知道汽车现在的状态。
三、网络式防盗系统
网络式防盗系统主要依靠社会公共网络监控车辆的行驶，有两种类型。第一种是GPS卫星定位防盗系统，它通过GPS卫星定位来确定车辆位置，然后通过GSM网将位置和报警信息传送至报警中心。报警中心通过GSM网控制汽车的断电和断油。然而，这种系统价格较高，需要经常支付服务费用，系统运行的功率也比较大，隐私性会受到影响，而且车辆如长期放置不使用会损耗电平电量。此外，车辆停在地下、大树下、大厦旁和室内系统都不能起作用。第二种是GSM、GPRS移动防盗器，它依托GSM通讯网络，进行手机和汽车的智能化联动防盗。它具有防盗、监控、远程控制、远程报警、定位和反劫等多种功能，是维护社会治安、保护车主利益的非常有效的手段。与同类产品相比，该系统还具有安装隐蔽、技术先进、性能可靠等多重特性。它具有不须建、报警不受距离限制的优点。然而，它需要支付GSM号码的月租费，因为它依赖GSN网的覆盖。盗贼的手段也是使用手机信号的，切断车辆同报警中心的联系，使得防盗系统失效。
水的声阻抗生物识别防盗系统是一种利用人体特征作为唯一解锁钥匙的防盗方式。该系统包括车主指纹启动控制器和静脉扫描控制器，利用指纹信息在系统内存中核实身份后方能启动汽车。虽然启动汽车之前需要多一个比对指纹的动作，但如果盗贼没有办法获得您的指纹，他便没有办法偷走您的爱车。只有指纹汽车防盗器才能真正意义上的守护您的爱车。
GPS卫星定位系统是目前市场上最先进的防盗装置，具有车辆定位、反劫报警、网络防盗、遥控熄火、车内监控、抛锚后救援、路况信息查询和电子狗导航等功能。该系统主要依靠锁定点火和起动达到防盗的目的，同时可以通过GPS卫星定位系统将报警信息同报警车辆所在位置传送到报警中心。然而，使用起来并不是非常实用，价格昂贵，实际效果不大。被盗车辆中有安装追踪系统的，都是发报系统被破坏，使卫星没有办法追踪到汽车位置，失去防盗作用。这样的系统相当昂贵，安装一套无显示屏的GPS就要6000-7000元，并且每年都要向GPS系统的服务公司交纳近千元服务费，经济效益不容乐观。
电子报警系统是在原有的中央门锁基础上加设了防盗系统控制电路，控制汽车移动的同时也报警。该系统不仅有切断启动电路、点火电路、出油电路、供油电路以及变速电路、制动锁死的功能，同时还会发出不同的声光求救信号进行报警，给盗车者精神上的打击，以阻止盗车过程。电子报警器是目前比较理想的报警装置。
Since the first Ford Model T was stolen。car theft has e one of the common crimes in big cities。As the number of cars increases。the number of XXX increases year by year。leading to greater social XXX convertible cars。door locks are no longer the most secure and the concept of car door locks has gradually faded away。leading to the emergence of car anti-theft systems。There are now a wide variety of electronic anti-theft systems available on the market。which can be purchased for 300-400 yuan。Nowadays。most new cars on the market are equipped with factory-made anti-theft devices。some of which have anti-theft chips on the keys that randomly change the unlocking password。making it XXX unlockXXX certificate to the original manufacturer。The latest car XXX cards instead of keys。When the car owner is within 3-5 meters of the car。the car anti-theft device will automatically disengage。and the car will start as soon as the n switch is pressed。When the car owner is 5 meters away from the car。the car doors XXX。
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