Different ways to structure the car alarm

With the development of China's economic construction, the automobile has increasingly become an indispensable part of people's lives, car theft has become one of the most common crime, which has become a serious social problem. With the increase of the number of cars, the number of vehicle theft has increased year by year, worried that the car is stolen, the troubled car users a problem. With the advances in science and technology to deal with the escalating car theft segment, people developed different ways to structure the anti-theft devices. Here talk about the type of car alarm.
A control of the key anti-theft system
The role of the control of the key anti-theft system is connected to an electronic anti-theft system circuit: When the driver door lock, electronic anti-theft system to enter the work state. Once a thief to illegally open the door, electronic anti-theft system on the one hand horn Car alarm for help, on the other hand to cut off the circuit of the ignition system, so that the engine can not start, then play the role of a burglar Car alarm.
The electronic key codes to control devices by the encoded ignition key to control automobile engine starting, in order to achieve the purpose of preventing the car stolen. It is mainly composed of by the ignition key identification code of the encoder controller and the engine control unit. Inlaid with resistance in the die, with the encoded ignition key identification code (resistance value) in the resistance of the tube core site. The ignition lock cylinder storage code, insert the key and stored in the code does not match, the resistance value does not meet the resistance value stored in the ignition lock, ignition system circuit can not be connected, and thus play a security role.
Two electronic code anti-theft system
Anti-theft electronic password is the key to open the alarm. The one hand, it recorded the identity of the alarm code, the difference between the various anti-theft devices of different; the other hand, it contains anti-theft feature script, data code turned on or off the alarm, control, alarm function.
Password different means of transmission, remote car alarm is divided into two types of fixed code anti-theft devices and code hopping alarm. The early anti-theft devices and more using the given code, but because of its easily deciphered, now gradually be technically more advanced, anti-theft better jump code anti-theft devices to replace. Following two different types of alarm principles, characteristics, etc. were to be introduced. A fixed code anti-theft devices. Early remote control car alarm host and the remote control has a different set the same password, the remote control to launch the password, the host receives a password, thus completing the various functions of the alarm, this password means of transmission is called the first generation of fixed code means of transmission (referred to as the fixed code transmission mode).
The means of transmission of fixed code car alarm is not popular, when the anti-theft devices dosage of not more than the application market is in an early alarm, alarm, security and reliability is guaranteed. But an anti-theft devices using mature market, the fixed code the way it is neither reliable nor safe, because there are three: the password is less prone to repeat the code, namely the occurrence of a remote control vehicles; remote after the device is lost, alone replace the remote control is very insecure, unless a replacement together with the host, but the cost is too high; the greatest danger to the security, password easily copied or stolen, so that the vehicle is stolen.
Code hopping anti-theft devices. Fixed code anti-theft device has long been a password is less prone to duplication of code and password can easily be copied to steal such as insecurity, code hopping alarm came into being, the following features:
In addition to the identity code and script, the password of the remote control more part of the code hopping. Code hopping password according to the encoding function, each fired once, then the password change time, the password will not be easily copied or stolen, is very safe. Password combination billion simply to eliminate duplicate code. Host without a password, by learning the password of the remote host in order to achieve mutual recognition between the host and the remote control. If the remote control is lost, can be safe and cost-effective to replace the remote control, no worries.
Remote electronic anti-theft system
This electronic anti-theft system is widely used in many factory fitted anti-theft system car use. Remote electronic anti-theft system is the use of transmit and receive equipment, electromagnetic waves or infrared to the door lock or open, that is, control anti-theft system security on duty or lifting.
Remote electronic anti-theft system a wide range of electromagnetic remote control of electronic security systems and infrared control anti-theft system. Help of remote control electronic security system at night without lights can be convenient to lock the door or open.
Structures. A complete set of remote control car alarm shall be composed of the following sections:
Host part: it is the core of the alarm and control center. Sensor detection part: it may be of a sensor or probe current widespread use of the oscillation sensors, microwave and infrared sensor applications rarely. Gated parts: the front cover switch, door switch and the luggage compartment switch. Car Alarm parts: the speaker. The wiring part.
Other parts: self-adhesive, screws and relays and other accessories and instruction manual and installation wiring diagram.