Online update method of boot program of vehicle electronic control unit ecu
A technology of electronic control unit and boot program, which is applied in the field of automobiles, can solve the problems of reducing the cost of automobile maintenance or renewal, and achieve the effect of reducing maintenance or renewal costs and solving the problem of replacement
Active Publication Date: 2019-03-12
SHANGHAI SEEYAO ELECTRONICS CO LTD
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Problems solved by technology
[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an online update technology for the electronic control unit ECU of a vehicle, so as to solve the problem of replacement of the electronic control unit of the vehicle and reduce the maintenance or renewal cost of the vehicle
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Embodiment Construction
[0021] The inventors of the present invention found that in the prior art, most of the updating of electronic control units on automobiles is realized by replacing new electronic control units. In this way, not only the updating is cumbersome, but also the updating or maintenance cost of the automobile is increased.
[0022] Therefore, the inventor of the present invention has improved the prior art and provided an online update method of the electronic control unit ECU for vehicles, which can only update the application program without changing the hardware, and update the application program through the boot program. The method is used to complete the upgrading of the product, thereby solving the problem of updating the electronic control unit of the automobile in the prior art.
[0023] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention fr...
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The invention provides an online updating method for a vehicle electric control unit (ECU). The method comprises the following steps: when an application program of the ECU receives a diagnostic service command which represents reset, executing a system reset operation to enter a guide program; reading an update request marker by the guide program after entering the guide program, removing the update request marker under the circumstance that the update request marker is effective, initializing hardware and parameters, and enabling an update function to enter a main process of the update function; in the main process of the update function, regularly obtaining the current diagnostic service command, and executing erasure and update operations according to the obtained diagnostic service command to finish transmission and update of updated data; after the transmission of all the updated data is finished, checking a downloaded updated application program in one or more ways to determine the validity of the update. According to the method, the application program can be updated without modifying hardware, so that the repair or update cost of vehicles is reduced.
Description
technical field [0001] The invention belongs to the field of automobiles, in particular to an online updating method of a boot program of an electronic control unit (ECU) for a vehicle. Background technique [0002] As a convenient means of transportation, cars have gradually entered families in our country with the improvement of people's living standards. By 2009, my country's annual production and sales of automobiles ranked first in the world. When consumers choose a car, in addition to paying attention to factors such as cost performance and after-sales service, the demand for functional safety, comfort, and environmental protection of the car is constantly increasing. Therefore, the application of on-board electronic control units in automobiles is increasing, the functions are gradually enhanced, and the mechanisms are increasingly complex. [0003] In the 1990s, basically there were only about 20 electronic control units on a mid-range car, and more functions were ...
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IPC IPC(8): G06F8/65
Inventor 朱懿王永和石超
Owner SHANGHAI SEEYAO ELECTRONICS CO LTD