CN108769226A - The OAT upgrade methods and car-mounted terminal of vehicle - Google Patents
The OAT upgrade methods and car-mounted terminal of vehicle Download PDFInfo
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- CN108769226A CN108769226A CN201810569445.XA CN201810569445A CN108769226A CN 108769226 A CN108769226 A CN 108769226A CN 201810569445 A CN201810569445 A CN 201810569445A CN 108769226 A CN108769226 A CN 108769226A
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- car
- mounted terminal
- function modules
- data packet
- upgrade
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/70—Software maintenance or management
- G06F8/71—Version control; Configuration management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
Abstract
The present invention relates to the OAT upgrade methods and car-mounted terminal of a kind of vehicle, method includes：Server sends request upgrade command according to car-mounted terminal ID to the OTA function modules of car-mounted terminal；OTA function modules will ask upgrade command to be sent to central processor CPU；CPU generates the application APP that upgrade tip information is sent to car-mounted terminal according to request upgrade command；APP shows upgrade tip information using the display equipment of car-mounted terminal；APP receives confirmation upgrade command input by user, and will confirm that upgrade command is sent to CPU；CPU sends upgrading data packet download instruction according to confirmation upgrade command to OTA function modules；OTA function modules send upgrading data packet request instruction according to upgrading data packet download instruction to server, include car-mounted terminal ID in upgrading data packet request instruction；Upgrading data packet is sent to OTA function modules by server according to car-mounted terminal ID；OTA function modules carry out system update using upgrading data packet to the control system of vehicle.
Description
Technical field
The present invention relates to the OAT upgrade methods and car-mounted terminal of field of communication technology more particularly to a kind of vehicle.
Background technology
Aerial (Over The Air, OTA) technology of downloading is by mobile communication (global system for mobile communications or code point
The air interface of multiple access carries out client identification module (Subscriber Identity Module, SIM) card data and application
The technology of remote management.Air interface may be used Wireless Application Protocol (Wireless Application Protocol,
WAP), Universal Wireless Packet Service (General Packet Radio Service, GPRS), CDMA1X and short message service technology.
Automatic driving vehicle controls vehicle traveling by car-mounted terminal and executes operations task, car-mounted terminal manufacturer
Understand the problem of being encountered in the process according to user's use, and the opinion of feedback, arranged, then product software is carried out again
Exploitation forms upgraded version, the problem of to repair existing version.Unified upgrading is carried out by recall vehicles, is opened new
Function optimizes Product Experience, provides more good system service.However, producer, which recalls, needs plenty of time and money, recall
Cost is higher.Therefore, how OTA upgradings to be carried out to the car-mounted terminal control system of automatic driving vehicle as needing what is solved to ask
Topic.
Invention content
The purpose of the present invention is in view of the deficiencies in the prior art, provide a kind of the OAT upgrade methods and vehicle of vehicle
Mounted terminal.
To achieve the above object, in a first aspect, the present invention provides a kind of OAT upgrade methods of automatic driving vehicle, packet
It includes：
Server sends request upgrade command according to car-mounted terminal ID to the OTA function modules of car-mounted terminal；
The request upgrade command is sent to central processor CPU by the OTA function modules；
The CPU generates the application program that upgrade tip information is sent to car-mounted terminal according to the request upgrade command
APP；
The APP shows the upgrade tip information using the display equipment of the car-mounted terminal；
The APP receives confirmation upgrade command input by user, and the confirmation upgrade command is sent to the CPU；
The CPU sends upgrading data packet download instruction according to the confirmation upgrade command to the OTA function modules；
The OTA function modules send upgrading data packet to the server according to the upgrading data packet download instruction and ask
It includes the car-mounted terminal ID to ask instruction, the upgrading data packet request instruction；
Upgrading data packet is sent to the OTA function modules by the server according to the car-mounted terminal ID；
The OTA function modules carry out system update using the upgrading data packet to the control system of the vehicle.
Further, the control system of the vehicle is carried out using the upgrading data packet in the OTA function modules
After system update, the method further includes：
The OTA function modules generate update progress msg, and the update progress msg is sent to the CPU and institute
State server.
Further, the method further includes：
The update progress msg is sent to the APP by the CPU；
The APP shows the update progress msg using the display equipment.
Further, the method further includes：
The OTA function modules obtain the mobile terminal ID of the corresponding mobile terminal of the car-mounted terminal；
The update progress msg is sent to the mobile terminal according to the mobile terminal ID.
Further, request upgrading is sent to the OTA function modules of car-mounted terminal according to car-mounted terminal ID in server to refer to
Before order, the method further includes：
The server obtains the version information of the control system current version information and OTA upgrade package of vehicle；
Judge whether the version information of the OTA upgrade package is higher than the control system current version information.
Further, request upgrading is sent to the OTA function modules of car-mounted terminal according to car-mounted terminal ID in server to refer to
Before order, the method further includes：
The car-mounted terminal sends version querying request to the server, includes the vehicle in the version querying request
The car-mounted terminal ID of mounted terminal.
Further, upgrading data packet is sent to the OTA function modules according to the confirmation upgrade command in the CPU
Before download instruction, the method further includes：
The CPU judges whether the current network of the car-mounted terminal connection is default network, if it is not, then generating network
Condition prompting information is sent to the APP；
The APP shows the network state prompt message using the display equipment；
Receive the corresponding confirmation message of the network state prompt message input by user.
Further, the control system of the vehicle is carried out using the upgrading data packet in the OTA function modules
Before system update, the method further includes：
Whether it is standby mode that the OTA function modules judge the automatic driving vehicle currently.
Further, request upgrading is sent to the OTA function modules of car-mounted terminal according to car-mounted terminal ID in server to refer to
Before order, the method further includes：
The car-mounted terminal registers the car-mounted terminal ID in the server.
Second aspect, the present invention provides a kind of car-mounted terminal of automatic driving vehicle, the car-mounted terminal includes this hair
OTA function modules, central processor CPU and the application APP that bright embodiment provides.
The OAT upgrade methods and car-mounted terminal of vehicle provided by the invention, server is according to car-mounted terminal ID to vehicle-mounted end
The OTA function modules at end send request upgrade command；OTA function modules will ask upgrade command to be sent to central processor CPU；
CPU generates the application APP that upgrade tip information is sent to car-mounted terminal according to request upgrade command；APP utilizes vehicle-mounted end
The display equipment at end shows upgrade tip information；APP receives confirmation upgrade command input by user, and will confirm that upgrade command is sent out
It send to CPU；CPU sends upgrading data packet download instruction according to confirmation upgrade command to OTA function modules；OTA function module roots
Upgrading data packet request instruction is sent to server according to upgrading data packet download instruction, includes vehicle in upgrading data packet request instruction
Mounted terminal ID；Upgrading data packet is sent to OTA function modules by server according to car-mounted terminal ID；OTA function modules utilize liter
Level data packet carries out system update to the control system of vehicle.Method provided by the invention and car-mounted terminal, pass through car-mounted terminal
And server communicated, directly download upgrading data packet from server carries out system update, side to the control system of vehicle
Just quick, avoid that producer's vehicle recalls generation recalls cost.
Description of the drawings
Fig. 1 is the OAT upgrade method flow charts for the automatic driving vehicle that the embodiment of the present invention one provides；
Fig. 2 is the schematic diagram of the car-mounted terminal of automatic driving vehicle provided by Embodiment 2 of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Automatic driving vehicle in technical solution of the present invention specifically includes intelligent cleaning equipment, can be in specific and closed-loop
Ambient enviroment is perceived in border and realizes low speed automatic Pilot, is realized during automatic Pilot to specifying the automatic cleaning in region to appoint
Business.
All drivers and control system of vehicle operate on car-mounted terminal, including be responsible for main software logic and
Control unit for vehicle (Automated Vehicle Control Unit, AVCU), the car body controller (Body of control algolithm
Control Module, BCM), OTA function modules, application APP.AVCU realizes business for handling automatic Pilot algorithm
The motion control of layer function and vehicle.AVCU is made of two processors, including micro-control unit (Micro-controller
Unit, MCU) and central processing unit (Central Processing Unit, CPU), BCM is used for vehicle bottom control, for example,
Lighting system, wheel speed sensors, loudspeaker etc..BCM, CPU, MCU pass through controller local area network (Controller Area
Network, CAN) bus communicated.
Fig. 1 is the OAT upgrade method flow charts for the automatic driving vehicle that the embodiment of the present invention one provides.As shown in Figure 1, tool
Body includes the following steps：
Step 101, server sends request upgrade command according to car-mounted terminal ID to the OTA function modules of car-mounted terminal；
Before step 101, car-mounted terminal needs to be registered in server by Termination ID, and after registration, server is
According to car-mounted terminal ID request upgrade command can be sent to car-mounted terminal.Car-mounted terminal ID is the unique mark letter of car-mounted terminal
Breath.
Upgrade command, including following two possibilities are asked for when server sends to car-mounted terminal：
The first, periodically while opening every time (or car-mounted terminal) inquiry is corresponding with the presence or absence of car-mounted terminal ID for server
OTA upgrade package obtains the version information of the control system current version information and OTA upgrade package of vehicle；Judge OTA upgrade package
Whether version information is higher than control system current version information.Version information specifically includes version number etc..If OTA upgrade package
Version number is higher than control system current version number, then server sends request upgrade command to car-mounted terminal.
Second, car-mounted terminal sends version querying request to server, comprising car-mounted terminal in version querying request
Car-mounted terminal ID.Whether server is higher than the current version of control system according to the version number of version querying requesting query OTA upgrade package
This number, if there is the OTA upgrade package of highest version, then server sends request upgrade command to car-mounted terminal.
Step 102, OTA function modules will ask upgrade command to be sent to central processor CPU；
OTA function modules receive the relevant instruction of OTA functions that server is sent, and need to be transmitted to CPU, be carried out by CPU
Processing, is sent to the APP of car-mounted terminal later.
Step 103, CPU generates the application program that upgrade tip information is sent to car-mounted terminal according to request upgrade command
APP；
CPU generates visual upgrade tip information according to request upgrade command, for example, " upgrading experience new version, if
Two button "Yes" and "No" is arranged in upgrading ".CPU by upgrade tip information be sent to it is vehicle-mounted in APP, by APP realize with
Information exchange between user.
Step 104, APP shows upgrade tip information using the display equipment of car-mounted terminal；
APP shows upgrade tip information using the display equipment such as electronic display of car-mounted terminal, is prompted to user.
Step 105, APP receives confirmation upgrade command input by user, and will confirm that upgrade command is sent to CPU；
The instruction that APP receives confirmation upgrading of the user according to upgrade tip information input is used such as the example in step 103
Button "Yes" is clicked at family, then the confirmation upgrade command is sent to CPU processing by APP.
Step 106, CPU sends upgrading data packet download instruction according to confirmation upgrade command to OTA function modules；
CPU generates upgrading data packet download instruction and is sent to OTA function modules to confirming that upgrade command is handled.
Before step 106, CPU judges whether the current network of car-mounted terminal connection is default network, if it is not, then raw
It is sent to APP at network condition prompting information；APP shows network state prompt message using display equipment；Receive user's input
The corresponding confirmation message of network state prompt message.
Wherein, default network can be WIFI network, can also be the network state that signal strength reaches predetermined threshold value.
For example, if current network be 3G/4G networks, in order to avoid generate extra charge, need by APP to user into
Row prompt, prompt message such as " being currently non-WIFI states, whether PLSCONFM downloads upgrading data packet ".
Step 107, OTA function modules send upgrading data packet request to server according to upgrading data packet download instruction and refer to
It enables；
Wherein, include car-mounted terminal ID in upgrading data packet request instruction.OTA updating functional modules data packet download instructions
To the corresponding upgrading data packets of server request car-mounted terminal ID, it is that server is able to confirm that according to car-mounted terminal ID for which vehicle
The upgrading data packet request instruction that mounted terminal is sent.
Step 108, upgrading data packet is sent to OTA function modules by server according to car-mounted terminal ID；
Server inquires corresponding upgrading data packet according to car-mounted terminal ID and is sent to car-mounted terminal, OTA function modules
Receive the upgrading data packet.Server records the download action of the car-mounted terminal, convenient for subsequent query car-mounted terminal
Version information.
Step 109, OTA function modules carry out system update using upgrading data packet to the control system of vehicle.
Specifically, OTA function modules utilize the defect of upgrading data packet reconditioned vehicle control system or to be added new
Function replaces legacy version etc. with new image file.
Optionally, before step 109, whether OTA function modules judge automatic driving vehicle currently by other modules and are
Standby mode, that is, judge whether be currently system idle time, it is therefore an objective to it avoids carrying out upgrading influence system when system busy
The speed of service.
Optionally, it after system starts update, needs that server and user is notified to update progress, to confirm whether update is complete
At.The notice of corresponding user can be realized by the electronic display of car-mounted terminal：OTA function modules generate update progress letter
Breath, and update progress msg is sent to CPU and server；CPU is sent to APP by progress msg is updated；APP is set using display
Standby display update progress msg.Alternatively, it is also possible to be realized by the corresponding mobile terminal of car-mounted terminal：OTA function modules obtain
The mobile terminal ID of the corresponding mobile terminal of pick-up mounted terminal；Progress msg, which will be updated, according to mobile terminal ID is sent to movement eventually
End.
The OAT upgrade methods of automatic driving vehicle provided by the invention, server is according to car-mounted terminal ID to car-mounted terminal
OTA function modules send request upgrade command；OTA function modules will ask upgrade command to be sent to central processor CPU；
CPU generates the application APP that upgrade tip information is sent to car-mounted terminal according to request upgrade command；APP utilizes vehicle-mounted end
The display equipment at end shows upgrade tip information；APP receives confirmation upgrade command input by user, and will confirm that upgrade command is sent out
It send to CPU；CPU sends upgrading data packet download instruction according to confirmation upgrade command to OTA function modules；OTA function module roots
Upgrading data packet request instruction is sent to server according to upgrading data packet download instruction, includes vehicle in upgrading data packet request instruction
Mounted terminal ID；Upgrading data packet is sent to OTA function modules by server according to car-mounted terminal ID；OTA function modules utilize liter
Level data packet carries out system update to the control system of vehicle.Method provided by the invention, by car-mounted terminal and server
It is communicated, directly download upgrading data packet from server carries out system update to the control system of vehicle, convenient and efficient, avoids
What producer vehicle recalled generation recalls cost.
Fig. 2 is the schematic diagram of the car-mounted terminal of automatic driving vehicle provided by Embodiment 2 of the present invention.As shown in Fig. 2, vehicle
Mounted terminal includes：OTA function modules 1, central processor CPU 2 and application APP 3.
Server sends request upgrade command according to car-mounted terminal ID to the OTA function modules of car-mounted terminal；OTA function moulds
Block 1 will ask upgrade command to be sent to central processor CPU 2；CPU2 generates upgrade tip information hair according to request upgrade command
It send to the application APP 3 of car-mounted terminal；APP3 shows upgrade tip information using the display equipment of car-mounted terminal；APP3 connects
Confirmation upgrade command input by user is received, and will confirm that upgrade command is sent to CPU2；CPU2 is according to confirming upgrade command to OTA
Function module 1 sends upgrading data packet download instruction；OTA function modules 1 are sent out according to upgrading data packet download instruction to server
Upgrading data packet request instruction is sent, includes car-mounted terminal ID in upgrading data packet request instruction；Server is according to car-mounted terminal ID
Upgrading data packet is sent to OTA function modules 1；OTA function modules 1 carry out the control system of vehicle using upgrading data packet
System update.
The specific work process and embodiment one of the car-mounted terminal for the automatic driving vehicle that the embodiment of the present application two provides carry
The OAT upgrade methods of the automatic driving vehicle of confession correspond to, and details are not described herein again.
The car-mounted terminal of automatic driving vehicle provided by the invention, by being communicated with server, directly from server
It downloads upgrading data packet and system update is carried out to the control system of vehicle, it is convenient and efficient, it avoids producer's vehicle and recalls generation
Recall cost.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can use hardware, processor to execute
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of OAT upgrade methods of automatic driving vehicle, which is characterized in that the method includes：
Server sends request upgrade command according to car-mounted terminal ID to the OTA function modules of car-mounted terminal；
The request upgrade command is sent to central processor CPU by the OTA function modules；
The CPU generates the application APP that upgrade tip information is sent to car-mounted terminal according to the request upgrade command；
The APP shows the upgrade tip information using the display equipment of the car-mounted terminal；
The APP receives confirmation upgrade command input by user, and the confirmation upgrade command is sent to the CPU；
The CPU sends upgrading data packet download instruction according to the confirmation upgrade command to the OTA function modules；
The OTA function modules send upgrading data packet request to the server according to the upgrading data packet download instruction and refer to
It enables, the upgrading data packet request instruction includes the car-mounted terminal ID；
Upgrading data packet is sent to the OTA function modules by the server according to the car-mounted terminal ID；
The OTA function modules carry out system update using the upgrading data packet to the control system of the vehicle.
2. according to the method described in claim 1, it is characterized in that, utilizing the upgrading data packet in the OTA function modules
After carrying out system update to the control system of the vehicle, the method further includes：
The OTA function modules generate update progress msg, and the update progress msg is sent to the CPU and the clothes
Business device.
3. according to the method described in claim 2, it is characterized in that, the method further includes：
The update progress msg is sent to the APP by the CPU；
The APP shows the update progress msg using the display equipment.
4. according to the method described in claim 2, it is characterized in that, the method further includes：
The OTA function modules obtain the mobile terminal ID of the corresponding mobile terminal of the car-mounted terminal；
The update progress msg is sent to the mobile terminal according to the mobile terminal ID.
5. according to the method described in claim 1, it is characterized in that, in server according to car-mounted terminal ID to car-mounted terminal
Before OTA function modules send request upgrade command, the method further includes：
The server obtains the version information of the control system current version information and OTA upgrade package of vehicle；
Judge whether the version information of the OTA upgrade package is higher than the control system current version information.
6. according to the method described in claim 1, it is characterized in that, in server according to car-mounted terminal ID to car-mounted terminal
Before OTA function modules send request upgrade command, the method further includes：
The car-mounted terminal sends version querying request to the server, includes the vehicle-mounted end in the version querying request
The car-mounted terminal ID at end.
7. according to the method described in claim 1, it is characterized in that, in the CPU according to the confirmation upgrade command to described
Before OTA function modules send upgrading data packet download instruction, the method further includes：
The CPU judges whether the current network of the car-mounted terminal connection is default network, if it is not, then generating network state
Prompt message is sent to the APP；
The APP shows the network state prompt message using the display equipment；
Receive the corresponding confirmation message of the network state prompt message input by user.
8. according to the method described in claim 1, it is characterized in that, utilizing the upgrading data packet in the OTA function modules
Before carrying out system update to the control system of the vehicle, the method further includes：
Whether it is standby mode that the OTA function modules judge the automatic driving vehicle currently.
9. according to the method described in claim 1, it is characterized in that, in server according to car-mounted terminal ID to car-mounted terminal
Before OTA function modules send request upgrade command, the method further includes：
The car-mounted terminal registers the car-mounted terminal ID in the server.
10. a kind of car-mounted terminal of automatic driving vehicle, which is characterized in that the car-mounted terminal includes that claim 1-9 such as appoints
OTA function modules, central processor CPU and application APP described in one.
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| CN201810569445.XA CN108769226A (en) | 2018-06-05 | 2018-06-05 | The OAT upgrade methods and car-mounted terminal of vehicle |
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| CN201810569445.XA CN108769226A (en) | 2018-06-05 | 2018-06-05 | The OAT upgrade methods and car-mounted terminal of vehicle |
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Cited By (23)
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| CN109495307A (en) * | 2018-11-27 | 2019-03-19 | 北京车和家信息技术有限公司 | Method for upgrading system, OTA upgrade package encryption method, terminal device and vehicle |
| CN110149385A (en) * | 2019-05-10 | 2019-08-20 | 上海擎感智能科技有限公司 | Download upgrading terminals in space |
| CN110162323A (en) * | 2019-05-28 | 2019-08-23 | 广州小鹏汽车科技有限公司 | Onboard system upgrade method, device, storage medium and vehicle |
| CN110225124A (en) * | 2019-06-13 | 2019-09-10 | 广州小鹏汽车科技有限公司 | Vehicle data shares processing method, device, vehicle and medium |
| CN110290496A (en) * | 2019-06-17 | 2019-09-27 | 高新兴物联科技有限公司 | A kind of V2X upgrade-system and upgrade method |
| CN110300406A (en) * | 2019-06-26 | 2019-10-01 | 上海擎感智能科技有限公司 | Vehicle online upgrading method and system, storage medium and car-mounted terminal based on OTA |
| CN110347411A (en) * | 2019-07-17 | 2019-10-18 | 深圳市英博超算科技有限公司 | Program installation/upgrade method, device and system |
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| CN110378153A (en) * | 2019-07-18 | 2019-10-25 | 上海擎感智能科技有限公司 | A kind of upgrade package safety downloading method and system |
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| CN110659049A (en) * | 2019-09-24 | 2020-01-07 | 北京智行者科技有限公司 | OTA (over the air) upgrading method and terminal equipment for automatic driving vehicle |
| CN110737457A (en) * | 2019-07-18 | 2020-01-31 | 上海擎感智能科技有限公司 | Vehicle-mounted software processing method, system and terminal |
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| CN112040443A (en) * | 2020-08-31 | 2020-12-04 | 经纬恒润(天津)研究开发有限公司 | Multi-client OTA upgrade processing method and system |
| CN113536350A (en) * | 2021-07-27 | 2021-10-22 | 上海科络达云软件技术有限公司 | OTA technology-based upgrade package encryption and decryption method and system |
| CN113630256A (en) * | 2021-09-13 | 2021-11-09 | 广州文远知行科技有限公司 | Vehicle chassis communication control method, device, equipment and storage medium |
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| CN115242821A (en) * | 2022-07-26 | 2022-10-25 | 中汽创智科技有限公司 | OTA (over the air) upgrading method and device |
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