Role of Bluetooth in Automotive Applications

 Bluetooth in Cars:


The toting taking place generations of cars will have an increasing number of micro controllers associated via two or more networks. An advantage of this is that the car can be individually customized by software, another that the car to cordial extent can have self investigative functions. To abundantly use such features, it is valuable to have a bidirectional communication in the midst of the car system and production tools as accurately as assist tools for the length of loading optional appendage software and parameters and uploading of status and critical messages. These production and abet tool will, to a enjoyable extent be based around pc technology. The association along along along in addition to car system and the tool is made via a cable, either directly to the CAN(Controller Area Network) bus via a gateway. The cheapest way is to colleague the pc directly to the CAN bus by drip pedigree but this has to be rapid. According to the CAN adequate it should be less than 39 cm at 1 Mbit/s bitrate. Compare subsequent to USB and Bluetooth, the mobility and versatility has very performed Bluetooth.


Bluetooth in car production:


In the car production a lot of software is downloaded as unmovable step in the production extraction. This is an application where Bluetooth would be ideally suited. Bluetooth base station is united to the production ground bus. When the car upon heritage gets related to the Bluetooth base station, it uploads it serial number. The production computer moreover downloads the software for this utterly car via the auditorium bus to the base station, which in approach of view transmit it to the car. However, this is a dedicated use and no supplementary Bluetooth units than those installed in the cars should make a get your hands on of linked to the cell.


Bluetooth for car minister to:


A scenario for using Bluetooth could be:

1) When the car enters the encourage station, its Bluetooth station gets turn behind the further stations main computer. This has in the in the previously exchanged opinion also the car computer via the cell phone system.

2) The promote station main computer alerts the further man allotted the task and his PC establishes right to use considering the car and downloads any mention needed.

3) The serviceman gets any play in instructions needed upon his PC. When servicing the car, he can rule and do used to several functions via the PC, e.g., any lights, windows, climate manage, engine parameters, etc. He can along with download the latest software versions to any Electronic Control Unit (ECU)

CAN/Bluetooth basics:

For more info Delphi DS150E.

CAN was developed to be a base for a very honorable communication via a twisted pair of wires that could be applied from totally easy tasks to militant exact time run. To realize this want, it is based upon the principle that all node in a system simultaneously checks each bit transmitted upon the bus. By this principle a row of problems along amid buss admission, industrial accident detection, data consistency, etc. are solved in an elegant way. However, the condition that every node should look the same bit at the thesame time requires a controlled recognition propagation period. This is easily achieved in a wired system but hard to the fore to in a wireless system. Therefore, any wireless transmissions in CAN systems have to be made via gateways and Bluetooth offers the best possibilities for this task surrounded by the behind-door to radio standards.


 

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