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automotive industry – the parts
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Electronic Immobilizers for the Automotive Industry
Source: www.atmel-grenoble.com
Topic: Automotive Industry
Sort Desciption: Electronic Immobilizers for the Automotive Industry. Introduction. In recent years increasing numbers of car thefts have. highlighted the urgent need for ...
Content Inside: 10.00 1 Electronic Immobilizers for the Automotive Industry Introduction In recent years increasing numbers of car thefts have highlighted the urgent need for effective and safe protection in the automobile industry. Atmel Wireless & Microcontrollers introduced the industry’s first single- chip reader IC for an automotive immobilizer anti-theft system in November 1994. Since 1995, European insur- ance companies have insisted on new cars being protected against theft by an immobilizer. An electronic immobilizer with an integrated transponder security system for cars is a form of passive theft protection because the transponder does not need a battery as power is supplied by the reader. The U2270B combines flexible coil driver circuitry, a highly integrated NF read channel and on-chip power supply. Along with Atmel Wireless & Microcontrollers’ TK5530, TK5551 or TK5561 transponders, the U2270B can be used to create a complete, compact and effective anti-theft system with minimum components. This chapter is a guide for designing an immobilizer which incorporates the U2270B. First of all, the magnetic coupling is explained and the parameters that are relevant for appropriate reading distance are identified. Next, solutions to overcome constellations with no modulation at the reader side are described. Then, the designer is guided through the application procedure. The dimensioning of the peripherals and the selection of the appropriate antenna adjustment strategy to guarantee the requested reading distance are discussed. In the following chapter, typical application examples are presented and a selection of the peripherals as well as the method of the antenna adjustment are described. A description of the adequate signal-detection software is given for applications where antenna adjustment is performed through a microcontroller. 10.00 2 System Design Considerations Magnetic Coupling Energy Transfer to the Transponder The U2270B serves as an ...
electronic immobilizer for automotive industries
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