[introduction]Blue tooth of low power comsumption? (Bluetooth LE) the ecosystem that the technology depends on maturity, super- character of low power comsumption and in the mobile phone gain ground extensively, in making car application, new link uses the first selection of the exemple wireless agreement. The article discussed the backside drive factor that wireless join application grows ceaselessly in the car, reviewed technology of blue tooth of low power comsumption a few use potentially with future currently exemple.

Blue tooth of low power comsumption? (Bluetooth LE) the ecosystem that the technology depends on maturity, super- character of low power comsumption and in the mobile phone gain ground extensively, in making car application, new link uses the first selection of the exemple wireless agreement. The article discussed the backside drive factor that wireless join application grows ceaselessly in the car, reviewed technology of blue tooth of low power comsumption a few use potentially with future currently exemple.

Car introduces the drive element of wireless communication technology

Automobile industry is experiencing to change unprecedentedly, drive electrification, automatically and car couplet net (V2X) wait for a trend almost at the same time emerge in large numbers. The car is in from offer basic transportation to serve to transform to the way that offers cheerful journey experience for the passenger. Car user uses a smartphone will increasingly to visit car custom-built check of this an organic whole. In addition, the amount as the sensor in the car, safe system and information entertainment system increases ceaselessly, the demand that joins them the car carries the computer also is in growth. And the weight that use wire cable can add a car not only and bulk, still can mix to producibility, cost complex degree bring a challenge.

Graph 1: The wireless join in car promoted an user the experience

Blue tooth of low power comsumption has low power comsumption, cost effectiveness advanced advantage, can use at replacing traditional controller local area network (CAN) and car use bureau region Internet (LIN) . The car is truckload manufacturer (OEM) hopes to use blue tooth of low power comsumption to be in certain with these techniques are replaced in the exemple. Compare with photograph of other and wireless technology, blue tooth of low power comsumption has multinomial advantage, because this makes the first selection plan of car application, these advantages include:

• What eliminated pair of each other what pass test and verify to operate a gender with the communication of the smartphone is anxious

• The standard of standardization and attestation

• In electric noise big and the performance in harsh environment is steady

• Apply to car compasses the component of AEC-Q100

• Low power comsumption, this is the crucial requirement of electric car

• The systematic level chip of low cost (SoC) yuan parts of an apparatus and antenna

Blue tooth of low power comsumption uses case mediumly in the car

In the car, blue tooth technology is used at car to visit a system at first, came true to be like smartphone key be entered without the key and start without the key wait for a function. The development in did not apply in this kind around blue tooth of low power comsumption will be based on individual number key and preference configuration to come custom-built user experience. For example, car can identify memory automatically to configure a file in the individual in driver or passenger mobile phone, do not have next seam adjust rearview mirror, seat and steering wheel angle in order to satisfy personalized requirement. In addition, return aux will be able to to be founded for other car user quite share the key, make smartphone key is become finally share drive automatically this starts the car anew the practical solution of the trend. However, this also needs an individual to configure a file to be defended by ritzy other security, be duplicated in order to prevent them by the tripartite without accredit, this may filch or the mode of operation that change car.

Low power comsumption corresponds to car couplet net the information entertainment system such as box and lead plane monitor is crucial. These systems include parts of an apparatus or appliance of join of tall power comsumption normally, be like beehive telecommunication modem, Wi-Fi and other connection agreement. These systems must abide by its strict power budget, when lest be in,car was not used, extinct car carries batteries n.

To satisfy these requirements, the wireless small controller that the system develops personnel to searching low power comsumption (MCU) , these MCU can shut yuan of parts of an apparatus with the taller power comsumption in car when need, also can wake up them when need. Blue tooth of low power comsumption is the good choice that achieves this one goal, for example, when it allows box of communication of car couplet net or lead plane monitor to should need, be waked up in order to adopt technique of the download in sky (OTA) undertake software is updated or execute other diagnostic function.

Besides automobile body application, another burgeoning trend is the wireless function that uses blue tooth technology in batteries management system, send the temperature of batteries group and voltage message to host computer regularly. Blue tooth of low power comsumption still can help a car truckload manufacturer (OEM) reduce cost, for example, control the system that monitor through wireless embryo (TPMS) let a driver use a mobile phone to check fetal pressing, receive an announcement when tire is flat even. In addition, the control that blue tooth of low power comsumption still can be aimed at dynamoelectric seat, rearview mirror, lock and scuttle simplifies partly design.

When choice car carries MCU of blue tooth of low power comsumption, besides exceeding low power comsumption, cabinet appearance and ensuring car inside and outside installs total number to be defeated as it is said also is crucial requirement.

Graph 2: NCV-RSL15 MCU is the space suffers be restricted the good choice of car application

Apply to a car wireless applying exceed MCU of low power comsumption

Ansenmei (Onsemi) NCV-RSL15 small controller (MCU) compositive blue tooth function of 5.2 wireless join, and have embedded safety defends and exceed character of low power comsumption, apply to car application. This small controller had obtained SPEC embedded group (SPEC Embedded Group, predecessor is embedded microprocessor is fiducial and allied, namely EEMBC) attestation, make the wireless small controller of power comsumption lowest, on the safe side. This are small controller uses proprietary intelligence to detect power comsumption mode, aim to reduce power comsumption as far as possible. For example, below 3V power source, can join on 3 passageways broadcast incident (blue tooth of basis low power comsumption 5.2 standards) peak value receives electricity only 2.7 MA, peak value transmits electricity only 4.3 MA.

Graph 3: Blue tooth of An Sen beautiful NCV-RSL 15 5.2 wireless MCU

Did NCV-RSL15 carry Arm? Cortex? – M33 processor kernel, deployed TrustZone? Armv8-M safety is patulous, formed the basis of its safety platform. This small controller was offerred newest embedded safe solution, have Arm CryptoCell? The trustful root safety of the function that is based on hardware guides, the hardware that a variety of users can visit adds close algorithm quickly, in having firmware air, upgrade (FOTA) ability, update the deploy with safe patch in order to support prospective firmware.

NCV-RSL15 offers mode of 4 kinds of low power comsumption, include dormancy, bide one’s time, intelligence detects and disengaged mode, aim to reduce specific power consumption while maintain a system to answer speed. Among them, intelligence detects mode made full use of the low power comsumption of dormancy mode is characteristic, allow partial number and imitate peripheral to be in at the same time processor holds activation position below few interpose.

This MCU suits to apply wireless applying at the car very much, if car visits control, embryo to press the system that monitor to wait, rely on power supply of batteries of a button only, the longest can carry the president amounts to 10 years of time. NCV-RSL15 uses miniature to enclose a form — QFNW40 6×6 is enclosed, dimension is cabinet, suit equipment of portable long-range visit and other space to suffer inside dimensional embryo extremely or the car carries an environment.

To facilitate developer develops application quickly, ansenmei still was offerred for this MCU comprehensive and the software kit that uses easily, include library of substantial code of give typical examples among them.

Wireless connective is burgeoning use case

Use blue tooth of low power comsumption wireless technology replaces a tradition old old car carries communication agreement, can help truckload the manufacturer reduces car wiring, the huge dynamical system in be electric car vacates more space, return what can reduce a car to hold a system to wait for machine electric current to use up at the same time. In addition, truckload the manufacturer will continue try every means uses technology of blue tooth of low power comsumption to be developed lighter, provide more but expansibility, more the batteries management system that makes easily.

(Origin: Ansenmei, author: Blue tooth of low power comsumption of An Sen beauty Ben Widsten of solution product manager)

Avoid duty statement: The article is reprint an article, reprint this article purpose to depend on passing more information, the person that copyright puts in original work ‘s charge is all. If involve work copyright issue,article place uses video, picture, written language, contact please small make up undertake handling.

Recommend read:

Shirt-sleeve function is safe, make advanced car HMI design

How to come true remote transmission electric power

The low power comsumption that intelligence lives in is wireless join solution

How does car compasses chip make information install entire new defense line

RTC production note and stop brace up theoretical analysis