CN109673009B - Method and device for upgrading VCU software in air - Google Patents
Method and device for upgrading VCU software in air Download PDFInfo
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- CN109673009B CN109673009B CN201811344593.8A CN201811344593A CN109673009B CN 109673009 B CN109673009 B CN 109673009B CN 201811344593 A CN201811344593 A CN 201811344593A CN 109673009 B CN109673009 B CN 109673009B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012795 verification Methods 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
- H04W8/245—Transfer of terminal data from a network towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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Abstract
The invention discloses a VCU software air upgrading method. Detecting the current vehicle speed, the working states of a storage battery and a high-voltage relay when a software upgrading request sent by a gateway is received; when the current vehicle speed, the working states of the storage battery and the high-voltage relay all meet refreshing conditions, refreshing the storage areas with low version numbers in the identification storage area A and the storage area B for updating; and writing identification information in the fixed flash of the storage area. The invention also relates to a VCU software air upgrading device. The invention updates the software in the A/B area seamlessly through the OTA over-the-air software upgrading method and version identification based on the UDS refreshing process, thereby reducing the cost, facilitating the subsequent maintenance and improving the use experience of users.
Description
Technical Field
The invention relates to the field of over-the-air upgrading, in particular to a VCU software over-the-air upgrading method and device.
Background
At present, the sales volume of new energy vehicles is increased year by year, the electronization degree of the new energy vehicles is higher and higher, the frequency of vehicle embedded software function updating and software bug repairing is higher, the repairing is carried out for a plurality of times, the cost is higher, the use experience of users can be seriously influenced by continuous updating, and meanwhile, if serious bugs occur, the software updating can be called back offline.
Disclosure of Invention
The invention aims to provide a VCU software air upgrading method and device, which can improve the use experience of users, reduce the cost and reduce the problem of offline recall of updated software.
According to a first aspect of the present invention, there is provided a VCU software over-the-air upgrade method, including:
when a software upgrading request sent by a gateway is received, detecting the current vehicle speed, the working states of a storage battery and a high-voltage relay;
when the current vehicle speed, the working states of the storage battery and the high-voltage relay all meet refreshing conditions, refreshing the storage areas with low version numbers in the identification storage area A and the storage area B for updating;
and writing identification information in the fixed flash of the storage area.
Further, after the "refreshing the memory area with the lower version number in the identified memory area a and the memory area B for updating" further includes:
switching the diagnostic session to an extended mode;
and entering security verification.
Further, "writing identification information in the fixed flash of the storage area" includes:
judging whether the identification information is written successfully;
if the writing is successful, the vehicle is powered on again;
and if the writing fails, judging whether the refreshing condition is met again.
Further, "if the writing is successful, the vehicle is powered on again" includes:
judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded;
if yes, running the application program of the updated storage area;
and if not, running the application program of the storage area which is not upgraded.
According to a second aspect of the present invention, there is provided a VCU software over-the-air upgrade apparatus, including:
the judging module detects the current vehicle speed, the working states of the storage battery and the high-voltage relay when receiving a software upgrading request sent by the gateway;
the updating module is used for updating the storage areas with low version numbers in the refreshing identification storage area A and the storage area B when the current vehicle speed and the working states of the storage battery and the high-voltage relay all meet refreshing conditions;
and the writing module writes the identification information into the fixed flash of the storage area.
Further, after the "refreshing the memory area with the lower version number in the identified memory area a and the memory area B for updating" further includes:
a switching module that switches the diagnostic session to an extended mode;
and the verification module enters security verification.
Further, "writing identification information in the fixed flash of the storage area" includes:
judging whether the identification information is successfully written according to the judging module;
if the writing is successful, the vehicle is powered on again;
and if the writing fails, judging whether the refreshing condition is met again.
Further, "if the writing is successful, the vehicle is powered on again" includes:
judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded or not according to the judging module;
if yes, running the application program of the updated storage area;
and if not, running the application program of the storage area which is not upgraded.
According to a third aspect of the present invention, there is provided an electronic device comprising a memory, a processor, a bus, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the VCU software over-the-air upgrade method of the first aspect when executing the program.
According to a fourth aspect of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of a VCU software over-the-air upgrade method of the first aspect.
The beneficial effects of the invention are as follows: compared with the prior art, the method for upgrading the software over the air through the OTA, the software in the A/B area is upgraded and updated seamlessly through version identification based on the UDS refreshing process, the version of the application program is identified after the updating is finished and the application program in the latest area is operated, so that a system which can work on equipment can be ensured all the time during upgrading, the cost is reduced, the subsequent maintenance is facilitated, and the use experience of a user is improved.
Drawings
FIG. 1 is a flow chart of a VCU software over-the-air upgrade method according to an embodiment of the present invention;
fig. 2 is a block diagram of an over-the-air upgrade apparatus for VCU software according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Fig. 1 shows a flow of an over-the-air upgrade method for VCU software according to an embodiment of the present invention, including:
and S11, detecting the current vehicle speed, the working state of the storage battery and the working state of the high-voltage relay when receiving the software upgrading request sent by the gateway.
The execution subject of the method may be the VCU.
In the embodiment of the present disclosure, the data transmission is mainly performed by communicating with the VCU through the gateway, which mainly performs data transmission in a CAN communication manner. The CAN protocol is characterized in that all units CAN send messages when a multi-master control bus is idle, and the priority is determined according to identifiers when more than two units start sending messages simultaneously; the system flexibly connects the units of the bus and has no information like 'address'; the speed is high; has the functions of error detection, error notification and error recovery. After receiving OTA (over the air) technology software upgrading request sent by a gateway, namely the whole vehicle controller, the VCU confirms whether the updating can be carried out or not, wherein the OTA is a technology for carrying out remote management on SIM card data and application through an air interface of mobile communication.
And S12, when the current vehicle speed and the working states of the storage battery and the high-voltage relay all meet the refreshing conditions, updating the storage areas with low version numbers in the refreshing identification storage area A and the storage area B.
In the embodiment of the present specification, after receiving an OTA software upgrade request, the VCU determines a refresh condition and replies to the gateway. The refreshing condition judgment content can be the current speed of the automobile, the voltage of the storage battery and the working state of the high-voltage relay. The gateway confirms whether the refresh is possible according to the feedback refresh state of the VCU. When the refreshing condition is met, the gateway and the VCU perform refreshing based on a UDS refreshing flow, UDS diagnosis communication can be similar to a client-server communication mode, namely a client sends a request, a server receives the request and then processes the request, and then sends a response to the client, but the diagnosis protocol has own characteristics, specifies formats of the request and the response, checks the formats when receiving the request, and simultaneously influences the processing mode and the result of the request and the response due to different addressing modes, whether sub-function support exists and the like. Based on the UDS technique, the version number of the area A, B is first identified before the refresh, for example, the current application program is running in the area a and the version of the application program in the area a is greater than that of the application program in the area B, and the area B is the previous version of the application program, and the low-version program storage area B is updated. The A/B system can be understood as that two systems A and B can work on the equipment, and can be understood as that one system partition and the other system partition are backup partitions, and through upgrading, the old version can be updated to the new version, so that seamless upgrading is realized.
In an embodiment of the present specification, the refresh condition specifically includes: the current speed is zero, the voltage of the storage battery is greater than 12V, and the high-voltage relay is in a disconnected state.
In this embodiment of the present description, the refresh condition that needs to be determined may include whether the current vehicle speed is zero, and if the vehicle speed is in a non-stationary state, the feedback does not satisfy the refresh condition; if the voltage of the storage battery is greater than 12V, and if the voltage is less than 12V, the feedback does not meet the refreshing condition; the high-voltage relay is in a disconnected state, if the relay is in a pull-in state, the BMS is requested to disconnect the high-voltage relay, and the VCU feeds back the current state to the gateway.
S13, writing identification information in the fixed flash of the storage area;
in this embodiment of the present specification, after the application program is successfully refreshed, the validity flag and the version number of the version need to be written in the fixed flash.
Further, after the "refreshing the memory area with the lower version number in the identified memory area a and the memory area B for updating" further includes:
switching the diagnostic session to an extended mode;
and entering security verification.
In the embodiments of the present specification, there are three sessions of the diagnostic service: the method comprises a default session, a programming session and an extended session, wherein the default session is lowest in level, supports several services with low security level, is also the initial state of the session, and can support services such as DTC Control, DID mark writing, and Routeine Control. And switching the diagnosis session to the expansion mode after updating the memory area with the low version number.
In the embodiment of the present specification, security verification needs to be entered after the diagnostic session is switched to the extended mode.
Further, "writing identification information in the fixed flash of the storage area" includes:
judging whether the identification information is written successfully or not;
if the writing is successful, the vehicle is powered on again;
if the writing fails, whether the refreshing condition is met is judged again.
In the embodiment of the present specification, after the identification information is written in by the fixed flash, the VCU further determines whether the information is successfully written, if the information is successfully written, the VCU may be powered on again for use, and if the information is unsuccessfully written, the VCU determines whether the vehicle meets the refresh condition again.
Further, "if the writing is successful, the vehicle is powered on again" includes:
judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded;
if yes, running the application program of the updated storage area;
and if not, running the application program of the storage area which is not upgraded.
In the embodiment of the present specification, the vehicle ignition signal KL15 powers on the vehicle again, and determines the version validity flag and the version number during the power-on initialization process, for example, when the version number of the area a is greater than the version number of the area B, after the upgrade is completed, the version validity flag of the area B is detected and the version number of the area B is greater than the version number of the area a, the application program in the area B is run, otherwise, the application program in the area a is run.
Fig. 2 shows a structure of an over-the-air VCU software upgrading apparatus according to an embodiment of the present invention, including:
the judging module 21 detects the current vehicle speed, the working states of the storage battery and the high-voltage relay when receiving a software upgrading request sent by the gateway;
the updating module 22 is used for updating the storage areas with low version numbers in the refreshing identification storage area A and the storage area B when the current vehicle speed and the working states of the storage battery and the high-voltage relay all meet refreshing conditions;
and the writing module 23 writes the identification information in the fixed flash of the storage area. Further, "changing the large central control screen into an operable state" specifically includes:
further, after the "refreshing the memory area with the lower version number in the identified memory area a and the memory area B for updating" further includes:
a switching module that switches the diagnostic session to an extended mode;
and the verification module enters security verification.
Further, "writing identification information in the fixed flash of the storage area" includes:
judging whether the identification information is successfully written according to the judging module;
if the writing is successful, the vehicle is powered on again;
and if the writing fails, judging whether the refreshing condition is met again.
Further, "if the writing is successful, the vehicle is powered on again" includes:
judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded or not according to the judging module;
if yes, running the application program of the updated storage area;
and if not, running the application program of the storage area which is not upgraded.
Yet another embodiment of the present invention discloses an electronic device, which includes a memory, a processor, a bus, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method embodiments when executing the computer program. A further embodiment of the invention discloses a storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiment. Examples include: when a software upgrading request sent by a gateway is received, detecting the current vehicle speed, the working states of a storage battery and a high-voltage relay; when the current vehicle speed, the working states of the storage battery and the high-voltage relay all meet refreshing conditions, refreshing the storage areas with low version numbers in the identification storage area A and the storage area B for updating; and writing identification information in the fixed flash of the storage area.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
Those of ordinary skill in the art will understand that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, although the present invention is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is possible to modify the solutions described in the above embodiments or to substitute some or all of the technical features of the embodiments, without departing from the scope of the present invention as defined in the claims.
Claims (6)
1. A VCU software over-the-air upgrading method is characterized by comprising the following steps:
when a software upgrading request sent by a gateway is received, detecting the current vehicle speed, the working states of a storage battery and a high-voltage relay;
when the current vehicle speed, the working states of the storage battery and the high-voltage relay all meet refreshing conditions, refreshing the storage areas with low version numbers in the identification storage area A and the storage area B for updating;
writing identification information into the fixed flash of the storage area, wherein the identification information comprises an effectiveness identification and a version number of the version;
judging whether the identification information is written successfully or not;
if the writing is successful, the vehicle is powered on again; judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded; if yes, running the application program of the updated storage area; if not, running the application program of the storage area which is not upgraded;
and if the writing fails, judging whether the refreshing condition is met again.
2. The over-the-air upgrading method of VCU software according to claim 1, wherein after the updating of the storage areas with low version numbers in the refresh identification storage area A and the storage area B, the method further comprises the following steps:
switching the diagnostic session to an extended mode;
and entering security verification.
3. An over-the-air upgrade device for VCU software, comprising:
the judging module detects the current vehicle speed, the working states of the storage battery and the high-voltage relay when receiving a software upgrading request sent by the gateway;
the updating module is used for updating the storage areas with low version numbers in the refreshing identification storage area A and the storage area B when the current vehicle speed and the working states of the storage battery and the high-voltage relay all meet refreshing conditions;
the writing module writes identification information into the fixed flash of the storage area, wherein the identification information comprises an effectiveness identification of a version and a version number;
judging whether the identification information is successfully written according to the judging module;
if the writing is successful, the vehicle is powered on again; judging whether the version number of the upgraded storage area is larger than the version number of the storage area which is not upgraded or not according to the judging module; if yes, running the application program of the updated storage area; if not, running the application program of the storage area which is not upgraded;
and if the writing fails, judging whether the refreshing condition is met again.
4. The over-the-air upgrading device of VCU software according to claim 3, wherein after the updating of the refresh identification storage area A and the storage area with the lower version number in the storage area B, the method further comprises the following steps:
a switching module that switches the diagnostic session to an extended mode;
and the verification module enters security verification.
5. An electronic device, characterized in that it comprises a memory, a processor, a bus and a computer program stored on the memory and executable on the processor, said processor implementing the steps of any of claims 1-2 when said program is executed.
6. A storage medium having a computer program stored thereon, characterized in that the program realizes the steps of any one of claims 1-2 when executed by a processor.
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| CN201811344593.8A CN109673009B (en) | 2018-11-13 | 2018-11-13 | Method and device for upgrading VCU software in air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112287348B (en) * | 2019-07-23 | 2023-07-21 | 上汽通用汽车有限公司 | Self-refreshing method and system of vehicle-mounted module |
| CN110928561B (en) * | 2019-08-09 | 2023-04-07 | 中国第一汽车股份有限公司 | Vehicle controller software version management method and device, vehicle and storage medium |
| CN110737451B (en) * | 2019-09-25 | 2023-09-29 | 广东博力威科技股份有限公司 | Front-end control software version updating method of battery |
| CN111038413B (en) * | 2020-01-15 | 2023-04-25 | 江铃汽车股份有限公司 | Whole car mode logic control and switching method |
| CN113220318A (en) * | 2020-01-21 | 2021-08-06 | 广州汽车集团股份有限公司 | Program updating method and device for motor controller and readable storage medium |
| CN111736880A (en) * | 2020-05-28 | 2020-10-02 | 苏州浪潮智能科技有限公司 | BMC refreshing method, system, equipment, product and storage medium |
| CN112114841A (en) * | 2020-06-10 | 2020-12-22 | 上汽通用五菱汽车股份有限公司 | Vehicle machine system upgrading method, vehicle and readable storage medium |
| CN114161933B (en) * | 2021-11-24 | 2024-08-06 | 北京新能源汽车股份有限公司 | Thermal runaway warning method and device for electric automobile, vehicle and storage medium |
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