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A technology for automobile and writing instructions, applied in the field of automobile diagnosis, can solve the problems of lack of flashing equipment, inconvenience of flashing different ECUs, etc., to achieve the effect of strong function scalability, reduced flashing cost, and strong software applicability
Active Publication Date: 2020-09-18
ANHUI UNIVERSITY OF TECHNOLOGY
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[0006]In order to overcome the problem that there are various models of existing cars and ECUs, auto repairers lack flashing equipment suitable for various types of ECUs, and it is inconvenient to flash different ECUs, The invention provides a system and method for flashing an automobile ECU. The technical solution provided by the invention can make a database of a corresponding car type for different car models, and call the database and data packets through the flashing program to flash the ECU. The operation is simple and at the same time guarantees write efficiency
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Embodiment 1
[0053] A kind of automobile ECU writing system of the present embodiment, comprises ECU writing module, communication module, lower computer and vehicle-mounted ECU (referring to figure 1 ). The ECU flashing module is realized by PC computer software, which includes an initialization module, a preparation instruction sending module, and a flashing instruction sending module. The initialization module includes initialization IO, initialization protocol type, command sending address and packaging method, initialization ECU, menu display function, so that the vehicle ECU and the ECU flashing module in the computer can correctly establish a connection and provide a display interface; prepare the command sending module Send instructions to the on-board ECU, adjust the running status of the on-board ECU, and prepare for writing data; the flashing instruction sending module sends instructions to the on-board ECU, and writes the data in the data packet corresponding to the ECU model i...
Embodiment 2
[0057] A method for flashing an automobile ECU in this embodiment utilizes the flashing system of Embodiment 1, through the initialization module, prepares the command sending module, and the flashing command sending module sends related instructions to realize flashing the vehicle ECU, the specific steps are as follows: :
[0058] Step 1. Establish the communication connection between the ECU flashing module and the vehicle ECU
[0059] For the communication connection between the ECU flashing module and the vehicle ECU, see figure 2 . The lower computer and the ECU flashing module in the computer are connected by a USB cable, and the lower computer and the vehicle ECU are connected by the OBDII bus.
[0060] Step 2. Execute the initialization operation
[0061] combine image 3 In the initialization module, initialize the IO, initialize the protocol type, set the address to send the command and the packaging method, initialize the ECU, and display the menu, so that the ...
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Abstract
The invention discloses an automobile ECU flashing system and method, and relates to the technical field of automobile diagnosis and the technical field of computer software. The ECU flashing system comprises an ECU flashing module, a communication module, a lower computer and a vehicle-mounted ECU. The ECU flashing module comprises an initialization module, a preparation instruction sending module and a flashing instruction sending module, establishes connection between the ECU flashing module and the vehicle-mounted ECU and sends an instruction to the vehicle-mounted ECU. The communication module comprises an OBDII data communication, USB communication module, Bluetooth communication and contacts all the modules in an ECU flashing system. The system and method are used for flashing of the automobile ECU, the data are written into the ECU memory for the automobile ECU needing to update the data, and the original data are updated to achieve function upgrading. By establishing the connection between the flashing module and the vehicle-mounted ECU, the flashing function is completed by selecting the data needing to be flashed, the operation is simple, the flashing efficiency can be greatly improved, the flashing cost is reduced, and the requirements of an automobile maintenance factory are met.
Description
technical field [0001] The invention relates to the technical field of automobile diagnosis, in particular to an automobile ECU flashing system and method. Background technique [0002] With the development of automotive electronic technology, on-board ECU is widely used in automobiles. ECU is composed of microprocessor (CPU), memory (ROM, RAM), input / output interface (I / O), analog-to-digital converter (A / D), and large-scale integrated circuits such as shaping and driving. When the ECU is running, the function jump is realized by reading the data. When an automobile manufacturer updates the ECU data of its own model, it needs to flash the ECU and write the updated data into the ECU to realize the upgrade. [0003] At present, since each automobile manufacturer has special flashing equipment, it is expensive for auto repairers to equip various specialized flashing equipment, and there are many types of models and ECUs on the market, which cannot be well integrated. Personn...
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