Anti-theft alarm: a comprehensive concentration of vehicle anti-theft technology

There are many brands of car anti-theft devices on the market. The commonly used ones are generally electronic alarms, central locking, electronic key recognition, GPS satellite global positioning, steering wheel locks, gear locks, hook locks, etc., and these have their own advantages and disadvantages. Therefore, how to buy relatively effective and affordable anti-theft equipment that suits your own car model has become the focus of car owners.

Introduction to Vehicle Anti-theft Technology

At present, the annual car sales in the world reach more than 50 million, and the market has more than 400 million cars. According to statistics, there are more than 100,000 car thefts in the country every year, with an average of more than 300 cars stolen every day. In Beijing, the 110 alarm service desk of the Beijing Municipal Public Security Bureau receives more than 10 reports of motor vehicle theft every day. The more cars people use, the more cars are stolen. Today, car anti-theft has become an important social issue. Anti-theft technology has been listed as one of the four major topics of automobile technology development along with safety, environmental protection and energy saving.

It is not a bad thing to install more anti-theft measures on the car. There is a very thought-provoking survey result in the United States. If every car in the world is equipped with 20 different anti-theft measures, then all car thieves will starve to death. It does not mean that these thieves cannot open the 20 locks on the car, but that these thieves do not have enough time to open them, unless you don't check your car for a month.

At present, there is no absolutely safe car in the world, and any anti-theft device has the possibility of being cracked. However, with the passage of time, people are making more and more innovative inventions in the automotive field, and the anti-theft technology applied to automobiles is becoming more advanced with the emergence of a large number of car thieves. Thus, a competition between Taoism and evil has begun with no end.

There are various anti-theft products and original anti-theft equipment for automobiles. There are two main categories of anti-theft products for automobiles, mechanical anti-theft products and electronic anti-theft products. Mechanical anti-theft products include wheel locks, gear locks and steering wheel locks. Electronic anti-theft products range from ordinary electronic anti-theft devices to GSM remote control by mobile phones and GSP satellite positioning. Below we introduce the characteristics, advantages and disadvantages of each type of anti-theft product one by one.

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Anti-theft technology for mainstream models

Now many cars are pre-installed with car computer anti-theft systems before leaving the factory. When the key chip data matches the pre-stored data in the car computer, the computer will notify the relevant system to start working and allow the engine to start. Cars with built-in car computer anti-theft systems do not need to install electronic anti-theft devices separately. This is easy to cause system conflicts with the anti-theft system installed on the original car; if you must install an additional electronic anti-theft device, please pay attention to separate it from the ignition system, otherwise it will cause faults such as engine failure to start. When a fault occurs, do not disassemble it by yourself, you can go to a professional car lock shop to use a professional decoder. Domestic cars sold on the market now have built-in computer anti-theft systems, and car owners do not need to make repeated investments. The anti-theft computer password and car key code that come with the car when buying a car must be saved. These data are the key to configuring the key. Once lost, it will bring unnecessary trouble to vehicle maintenance and key configuration. If you drive a car with a car computer anti-theft system installed, when you encounter a robbery, you only need to throw the key to the ground to damage the data chip in the key, and no one can drive the car away. Different car manufacturers have different ideas about anti-theft. Below we will introduce the anti-theft tricks of each model.

Due to cost constraints, small cars like Alto and Xiali have almost no anti-theft measures. It is estimated that car thieves do not feel much pleasure in stealing. Because to steal such a car, usually only tools such as screwdrivers and wires are needed. You can easily use the gap in the door to lift the door lock and open the door. Connect the ignition wire, and your car will change hands! Therefore, it is best to install an anti-theft device after buying such a car.

Fortunately, most car thieves are not interested in entry-level models below 50,000 yuan, so car owners should be careful not to leave any valuables in the car. Not long ago, a Xiali owner put a 100-yuan bill in the handle of the inner sliding door when passing a toll station. As a result, the car was parked in the community for one night, and the next day he found that the glass was smashed.

Intelligent anti-theft system has always been the technology that Citroen is most proud of. Dongfeng Citroen C2 is the main "anti-theft" brand, known as the "car that can't be stolen". In many car theft cases, thieves judge the model of the computer built into the engine based on the year of the vehicle's production, and replace the computer in the car with a pre-prepared computer when stealing the car. The cost of a car is only more than 1,000 yuan. C2 uses a "multi-channel transmission system" to connect independent computers such as the engine and automatic transmission for centralized control. Even if the thief replaces the engine computer, he cannot start other computers, and the car cannot be stolen.

Similar to Passat, the original anti-theft device of Bora uses various sensors to transmit pulse signals that meet the original requirements to achieve the effect of legal start. When the internal monitoring computer of the car cannot obtain relevant information, it will default to illegal start, and the control unit will order the electronic ignition system, the starting system, and the fuel supply system to stop working, which will have the effect of cutting off oil and power, making the car unable to start and achieving the anti-theft effect. In the past, many car owners were afraid to lend their cars to others for use, worried that others would steal the keys and steal the vehicles. These problems are solved with the intelligent original car anti-theft system. When the special pulse signal emitted by the car key is recognized by the signal receiving coil on the ignition switch, the vehicle can be legally started. Even if the thief copies the key, he cannot complete the above process at all.

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The airflow detection device on Volvo and Peugeot 307 can detect slight changes in the "air density inside the car" through ultrasonic sensors, thereby triggering the anti-theft device.

GAC Toyota's Camry is equipped with a relatively advanced TVSS electronic anti-theft system (Toyota Vehicle Safety Protection System for short). The anti-theft system not only meets the general anti-theft function, but also uses advanced intelligent password car keys in the anti-theft system. Even if the car key is copied by others or the traditional dial-up car theft method is used, the vehicle cannot be started. When the car is locked with a keychain-shaped remote control, the TVSS system is activated at the same time. If the door is not opened with the remote control, the engine will not start and an alarm will be sounded, catching the car thief off guard. Toyota continuously detects the vehicle status through multiple sensors (such as vibration sensors, door lock detection sensors, signal receivers, etc.), and transmits the signal to the anti-theft computer in a timely manner, and then the specific program in the anti-theft computer processes and judges it. When specific conditions are met, the corresponding program will be started and the alarm will be implemented through the control components (if someone tries to open the door, engine hood, luggage compartment door, or forcefully enter the car without the key or remote control, the anti-theft system will start the alarm program, causing the horn to sound, the headlights or turn signals to flash as a warning, and at the same time, the anti-theft system will cut off the starting circuit or ignition circuit, and the fuel supply system) to prevent theft, robbery, and facilitate vehicle search.

There are generally two types of electronic anti-theft devices installed in Guangben's Accord and Odyssey. One is the engine locking system and the other is the security anti-theft system. The engine locking system is to electronicize the car key. Through the communication between the car key, the anti-theft module and the engine ECU, the engine can only be started after the identification password matches. When the engine is illegally started by destroying the mechanical lock, copying the car key and short-circuiting the circuit, the system can lock the engine and restrict the movement of the vehicle. The security anti-theft system is mainly designed to prevent illegal entry into the car. The system uses the switch sensors of the door and hood and the body vibration sensor to trigger the horn or light alarm to serve as a warning.

At present, the anti-theft immobilizer equipped on the Audi A6 is a product that is in sync with international technology. In addition, the Audi A6 is also equipped with an internal monitoring system that other domestic models do not have: if any object (person) that enters the car without permission and moves slightly will be detected by the sensitive ultrasonic detector, thus triggering the alarm system and making the thief flee.

It is important to remind you that despite the top anti-theft systems, imported luxury cars such as BMW and Audi are not foolproof. Two months ago, a nationally famous BMW theft occurred: a father and son in Beijing stole the BMW owner's ID card and a copy of the car purchase invoice, and then went to the manufacturer's service station and lied that the car key was lost. As a result, the manufacturer believed them and re-produced a matching key from Germany and sent it to them. The consequences can be imagined. Therefore, car owners should ensure that the relevant documents of individuals and vehicles will not be illegally copied to the greatest extent possible.

The infrared detector inside the Porsche 911 will detect any movement inside the car at any time, and the anti-theft system will be activated immediately if there is any movement.