[introduction]In automobile industry, enter a system without the key (the occurrence of PEPS) changed we and car thoroughly interactive means. This system sees lock car automatically through safe wireless communication, support one key to start engine, need not manipulate car key actually. This technology simplified to enter the process that reachs the car that start not only, increased convenience sex, and still prevent to visit car without accredit through course of advanced identity test and verify, enhanced security.

In automobile industry, enter a system without the key (the occurrence of PEPS) changed we and car thoroughly interactive means. This system sees lock car automatically through safe wireless communication, support one key to start engine, need not manipulate car key actually. This technology simplified to enter the process that reachs the car that start not only, increased convenience sex, and still prevent to visit car without accredit through course of advanced identity test and verify, enhanced security.

Blue tooth low power comsumption (technology of Bluetooth Low Energy) and add the wireless technology such as close standard to progress ceaselessly, make enter a system without the key more be used easily and reduced cost effectively, gain ground more in car domain then. Market of low power comsumption of car blue tooth covered those who be based on technology of blue tooth low power comsumption to enter system, embryo to control the system that monitor without the key (TPMS) and system of radio pool management (the rich application such as WBMS) , and its dimensions hopeful expands continuously. Market of car entrance guard predicts to meet with stability compound year of increase rate (CAGR) grows continuously to 2027 (see a picture 1) . These systems are become gradually intermediate the standard configuration of above model, enhanced security of guard against theft not only, still pass height compositive simplified user experience, it is the indispensable pivotal character in process of development of control of car entrance guard.

Technology of blue tooth low power comsumption holds concurrently outstanding can effect and safe communication ability, more and more car companies use his at compose to build enter a system without the key. The character of low power comsumption of blue tooth low power comsumption lengthened car key etc the time of batteries add boat of portable equipment, this convenience sex to entering a system without the key and dependability are crucial. In addition, blue tooth low power comsumption still supports advanced and safe function, conduce to prevent relay attack, ensure only user ability enters accredit to start car.

This locality interrelates network (LIN) is the serial network agreement that at 20 centuries by European car manufacturer and technical provider alliance 90 time end establishs. This is the low speed plan with a kind of efficient economy, aim to replace controller local area network (the complex system such as CAN) , can use at managing the communication between the parts of an apparatus inside car. LIN framework supports individual controller to control 15 peripheral at most, became administration consequently simple sensor is mixed in contemporary car carry out implement choose ideally. Nowadays, although automobile industry is faced with crop to glide,wait for a challenge, but LIN agreement remains the indispensable one part in car communication system, its market predicts to will grow steadily, this also reflects its long-term and main effect to car electron domain.

Ansenmei (Onsemi) development goes a referenced design, discussed the complexity that optimizes a car to enter a system to design without the key deep, use low power comsumption of combinative blue tooth and LIN (this locality interrelates network) An Sen beautiful solution of the technology. This referenced design is compositive multinomial advanced technique, aim to simplify car and enter the communication between the system without the key, ensure offer an user to be not had friendlily seam an experience. Besides dovish sex of the technology, this design still takes systematic efficiency and dependability seriously particularly, this also is the first consideration element of car domain at the same time.

This referenced design is used take LIN to send and receive implement chip of foundation of system of NCV7428 of car plan step (SBC) . In-house logic and offerred software library look are united in wedlock, can use at be in two the communication that accords with LIN 2.x standard can come true between process designing parts of an apparatus. We demonstrated two peripheral with exemple, relevant peripheral and sniffer (PEPS system) corresponding, have communication through parts of an apparatus of LIN bus line and anchorage dot. The LIN that chooses in this design is sent and receive implement used 3.3 V internal low tension to fall (LDO) manostat, not only can power supply, still can protect highest the load that amounts to 70 MA. Such developer can be RSL10 to evaluate from LIN bus line directly board power supply, reduce integral system cost considerably then.

Car product of Ansenmei contains systematic odd chip in combination (SoC) , for example NCV-RSL10 (blue tooth LE 5.0) use NCV-RSL15 with new fund car (blue tooth LE 5.2) , in exceed low power comsumption (ULP) can is effect fiducial test EEMBC ULPMark? – the power comsumption in CoreProfile and ULPMARK-CoreMark test is industry lowest. SoC of low power comsumption already passed these blue teeth attestation of car plan step, it is the good choice of system of car entrance guard and WBMS, in addition still deserve to the extensive software development that includes project and code give a demonstration covers a support, conduce to application of low power comsumption of rapid development blue tooth.

It is the lowermost standards requirement of parts of an apparatus of low power comsumption of blue tooth of car entrance guard below:

• Low power comsumption of supportive blue tooth 5 or taller version

• Exceed low power comsumption

• Support is most at the same time 10 safe join

• Support the conjugate outside the belt

• Be based on trustful root (the safe lifecycle management of RoT) , TrustZone and CryptoCell-312

• AEC-Q100 2 class, ensure can bear be as high as + the working temperature of 105 ° C

• The network safety that passes attestation implements plan

Through establishing the general framework of digital key, car join is allied (CCC) standard drove what enter a system without the key to popularize a process greatly. This standard lets mobile equipment can store surely, test and verify and the digital key that share car, enhanced convenience sex and security thereby. This method of CCC used near field to correspond (NFC) He Chaokuan is taken (UWB) technology, make consumer OK more comfortable favourable geographical position is entered with the smartphone and start car, drive traditional car key to transform quickly thereby digital solution.

Article origin: Ansenmei

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