From the current mainstream models on the market, the main anti-theft methods include immobilizer engine (IMMO), remote control door lock (RKE), keyless entry (PKE), two-way smart key, infrared de
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From the current mainstream models on the market, the main anti-theft methods include immobilizer engine (IMMO), remote control door lock (RKE), keyless entry (PKE), two-way smart key, infrared detection, airflow detection and GPS satellite positioning, etc., among which IMMO and GPS are the most widely used.
The engine anti-theft locking system is developed on the basis of the general VATS, and inherits the idea of VATS in the principle of anti-theft, that is, using the password of the chip in the key to match the password in the starter switch to control the starting of the engine to achieve the purpose of anti-theft. "IMMO mainly controls the engine through the engine control unit ECU. The whole solution includes low-frequency transceivers, MCUs, voltage regulators and communication interface chips (such as CAN, LIN transceivers)." NXP Semiconductors Automotive Electronics Greater China Senior Marketing Manager Zhang Jianchen pointed out, "Under the limitation of size, so many components need to be realized with a special circuit board, so we have launched a new generation of single-chip solution ABIC2, including LIN transceivers, voltage regulators and digital The logic unit realizes the single-chip remote ECU communication, and only needs three wires (Power, GND and LIN) to realize the IMMO function.”
The remote control door lock (RKE) technology is the most common application in the automotive field, and most of the current models from high-end to low-end on the market have this function. The principle of this technology is to control the doors through the body control module BCM, which can be closed or opened by simply pressing the button on the key. With the development of technology, some mid-to-high-end models such as Cadillac STS, Ford Mondeo, and Peugeot 307 integrate this function with the engine immobilizer system. Zhang Jianchen said that in order to save the cost and space of keys, NXP took the lead in launching a single-chip solution integrating IMMO and RKE. ) proven anti-theft security features and the convenience of a remote door lock,” he said.
The keyless entry system (PKE) is developed on the basis of RKE. As a new generation of anti-theft technology, it is gradually developing and growing. At present, it has gradually entered the mid-range car market from the high-end car market. Not only Mercedes-Benz, BMW and other high-end car manufacturers have widely adopted it. PKE, mid-size models like the Ford Mondeo, Nissan's Teana, and the new Mazda have also embraced the technology. Zhang Jianchen explained that PKE is not a traditional key, but a smart key, similar to a smart card. When the driver steps into the designated area, the system will automatically open the door if it is a legally authorized driver. Once in the car, the driver only needs to press a button to activate the ignition. "As the first semiconductor manufacturer to mass-produce PKE solutions, NXP can currently provide a complete solution. The mainstream chip PCF7952 has the characteristics of high integration and low power consumption, and integrates all the functions of IMMO, RKE and PKE," he introduced. road.
Two-way smart key is a more intelligent anti-theft technology, which realizes two-way communication function by adding RF module. However, due to the high cost, it will take time for a large-scale application in the market. The advantages of the two-way smart key are mainly in two aspects: one is easier to use, the owner can monitor the status of the car on the key through the LED or LCD display to confirm whether the car is locked and whether the engine is still running; another advantage is that The security is greatly enhanced. The traditional one-way key is at risk of being intercepted or attacked when transmitting signals to the car. When using the two-way solution, car manufacturers can use various encryption security algorithms to encrypt the transmission data between the key and the car.
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