Bluetooth in Cars:
The unconventional generations of cars will have an increasing number of micro controllers linked via two or more networks. An advantage of this is that the car can be individually customized by software, other that the car to pleasant extent can have self diagnostic functions. To abundantly use such features, it is necessary to have a bidirectional communication together surrounded by the car system and production tools as neatly as support tools for then to loading auxiliary software and parameters and uploading of status and logical messages. These production and apportion support to tool will, to a pleasurable extent be based almost pc technology. The association along surrounded by car system and the tool is made via a cable, either directly to the CAN(Controller Area Network) bus via a gateway. The cheapest mannerism is to join going on the pc directly to the CAN bus by drip lineage but this has to be brusque. According to the CAN cordial plenty it should be less than 39 cm at 1 Mbit/s bitrate. Compare back 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 innocent step in the production heritage. This is an application where Bluetooth would be ideally suited. Bluetooth base station is compound to the production showground bus. When the car going around for heritage gets joined to the Bluetooth base station, it uploads it serial number. The production computer subsequently downloads the software for this totally car via the sports ground bus to the base station, which in slant transmit it to the car. However, this is a dedicated use and no added Bluetooth units than those installed in the cars should acquire joined to the cell.
Bluetooth for car further:
A scenario for using Bluetooth could be:
1) When the car enters the further station, its Bluetooth station gets simple connected to the abet stations main computer. This has promote on exchanged opinion once the car computer via the cell phone system.
2) The foster station main computer alerts the advance man allotted the task and his PC establishes relationships following the car and downloads any counsel needed.
3) The serviceman gets any undertaking instructions needed coarsely speaking his PC. When servicing the car, he can run and adapt several functions via the PC, e.g., any lights, windows, climate run, engine parameters, etc. He can then download the latest software versions to any Electronic Control Unit (ECU)
CAN/Bluetooth basics:
CAN was developed to be a base for a very adeptly-behaved communication via a twisted pair of wires that could be applied from enormously easy tasks to advanced valid time rule. To understand taking into consideration more this object, it is based upon the principle that all node in a system simultaneously checks each bit transmitted upon the bus. By this principle a disagreement of problems taking into consideration buss entry, catastrophe detection, data consistency, etc. are solved in an elegant mannerism. However, the condition that all node should see the same bit at the thesame time requires a controlled confession propagation become early. This is easily achieved in a wired system but hard to authorize 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 in the company of the within get settlement of radio standards.
The ideal Bluetooth concept for diagnostics:
The ideal Bluetooth concept for diagnostics should doing the considering qualities:
1 Low cost
2 Performance as needed
3 Standards as needed
To realize these goals we must have a low cost, tall accomplish Bluetooth unit that can be used for any application. Then it has to be stripped from everything not needed by everyone, i.e., a concept taking into account CAN. CAN give the basic features needed by any controller network, but unshakable features required have to be provided by an new in the push away-off ahead totaling protocol. The basic Bluetooth block should put happening back on on care of the RF portion and the indispensable share of the baseband protocol that is of no or teenager combination for any application but indispensable for the Bluetooth functionality.
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