CN114035856A - Control method and storage medium for peripheral devices during batch updating of ECU application layer software - Google Patents
Control method and storage medium for peripheral devices during batch updating of ECU application layer software Download PDFInfo
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention provides a control method and a storage medium for peripheral devices during batch updating of ECU application layer software, wherein the method comprises the following steps: when the application layer software is updated in batches, identifying the control parameters of the peripheral device corresponding to the application layer software through the VIN code; configuring an OTA task list and a corresponding software upgrading package; acquiring software version information of a target controller of each vehicle according to the VIN code; judging whether the software version information is the same as the version information of the software upgrading package, and if the software version information is different from the version information of the software upgrading package, issuing the software upgrading package to the OTA client; when the vehicle to be updated meets the OTA updating requirement, calibrating the control parameters of the vehicle to be updated through application layer software, after the calibration is completed, performing OTA updating on the application layer software, meanwhile, replacing the application layer software by a Boot loader to control all hardware interfaces, reading and executing the control parameters corresponding to more than one peripheral device by the Boot loader, and controlling each peripheral device to operate according to the corresponding control parameters through the hardware interfaces.
Description
Technical Field
The invention relates to the technical field of new energy automobile control, in particular to a control method and a storage medium of peripheral devices during batch updating of ECU application layer software.
Background
With the popularization of the OTA technology, the whole vehicle multi-ECU application layer software can be packed together for OTA upgrading, and the method is long in time consumption. In the OTA process, a low-voltage lead-acid battery is used for supplying power to the vehicle, the capacity of the lead-acid battery is small, the power consumption requirement during upgrading is controllable, the power consumption needs to be as low as possible, otherwise, the lead-acid battery is easy to fail in power feeding, and the vehicle breaks down. For a large-scale host factory, mass-produced vehicles have a plurality of models, each vehicle model has different configurations, different vehicle models and different configurations of the same vehicle model, peripheral devices of the vehicles have differences, and the operation amount of control management is large, so that the vehicles need to be operated in batches.
Peripheral devices controlled by controllers of the new energy automobile are controlled in a high-low level mode, a PWM duty ratio control mode and the like, when application layer software is updated, software is firstly erased and then written in the new software, the pin level of the controller without the application layer software is long and high or long and low in the process, partial devices such as a cooling fan and a water pump can be high and low, the level device can possibly generate level enabling to cause high-speed and normal rotation, the PWM device can generate high-speed and normal rotation with the duty ratio of 0 or 100%, and low-voltage energy consumption is very high.
Disclosure of Invention
The main problems solved by the invention are that when the application layer software is updated in batches by the new energy automobile, peripheral devices are not effectively controlled, so that the problems of high energy consumption, high noise and large operation amount exist, and the peripheral devices are obviously differentiated due to numerous types and configurations of large-scale host plants, so that the problems are further aggravated.
According to one aspect of the present invention, the present invention provides a method for controlling peripheral devices during batch update of ECU application layer software, comprising:
s1, when application layer software is updated in batch, identifying the control parameters of the peripheral device correspondingly linked with the VIN code through the VIN code;
s2, configuring an OTA task list and a corresponding software upgrading package;
s3, acquiring the version information of the target controller of each vehicle to be updated;
s4, judging whether the software version information of the target controller is the same as the version information of the software upgrading package, and when the software version information of the target controller is different from the version information of the software upgrading package, issuing the software upgrading package to the OTA client;
s5, when the vehicle to be updated meets the OTA upgrading requirement, calibrating the control parameters of the vehicle to be updated through the application layer software;
and S6, after calibration is completed, the application layer software is updated by OTA, meanwhile, a Boot loader is used for replacing the application layer software to control all hardware interfaces, the Boot loader reads and executes control parameters corresponding to more than one peripheral device, and each peripheral device is controlled to operate according to the corresponding control parameters through the hardware interfaces.
Further, the control method further includes:
in step S5, when the vehicle to be updated does not meet the OTA upgrade requirement, the steps S2-S4 are implemented again until the vehicle to be updated meets the OTA upgrade requirement.
Further, the control method further includes:
in step S4, when the version information of the target controller of any of the vehicles to be updated is the same as the version information of the software upgrade package, the success of the upgrade update of the vehicle to be updated is marked, and step S2 is re-implemented.
And further, before batch updating of the application layer software, defining control parameters of peripheral devices corresponding to the vehicle to be updated according to the actual configuration and the device model of the vehicle.
Further, before the control parameters correspondingly linked with the vehicle to be updated are identified through the VIN code of the vehicle to be updated, the control parameters of the peripheral device corresponding to the vehicle to be updated are customized.
Further, the OTA upgrading requirement is that a preset upgrading time is reached.
Further, control parameters defined according to the actual configuration of the vehicle and the device model are linked with the vehicle VIN code.
Further, before the control parameters correspondingly linked with the VIN code of the vehicle to be updated are identified through the VIN code of the vehicle to be updated, the customized control parameters of the peripheral device are linked with the VIN code of the vehicle.
According to another aspect of the present invention, a storage medium is also disclosed, wherein the storage medium is a computer-readable storage medium, and an executable computer program is stored on the computer-readable storage medium, and is used for executing the method for controlling peripheral devices when the ECU application layer software is updated in batch.
The invention provides a control method of a peripheral device during updating of application layer software on the premise of ensuring the universality of bottom layer software, which can enable the device to work under a proper low-consumption working condition, simultaneously, the requirement control parameters of the peripheral device corresponding to vehicle type and vehicle configuration are automatically identified according to vehicle VIN numbers before OTA through design, meanwhile, the control parameters of the peripheral device can be manually selected by the authority of a host factory, and the parameters are written into a public data storage area through interaction with the application layer, so that the management of the peripheral device during batch updating of the vehicle application layer software is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic control flow diagram of peripheral devices during ECU OTA software calibration and upgrade in the embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the first embodiment, as shown in fig. 1, a schematic control flow diagram of a peripheral device during ECU OTA software calibration and upgrade in this embodiment is shown, before a vehicle leaves a factory, control parameters of the peripheral device are configured according to a device type, the control parameters of the peripheral device are linked with a VIN code of the vehicle to be updated, and then application layer software starts to be updated in batch;
s1, when the application layer software is updated in batch, identifying the control parameters of the peripheral devices correspondingly linked with the VIN codes through the VIN codes of the vehicles to be updated; or before batch update of the application layer software, control parameters of the vehicle peripheral devices to be updated can be defined according to the vehicle device models and/or the actual configuration.
S2, configuring an OTA task list and a corresponding software upgrading package (namely, an upgrading package);
s3, acquiring software version information of a target controller of each vehicle to be updated according to the VIN code;
s4, judging whether the feedback version information of the target controller is the same as the version information of the upgrade package, and when the feedback version information of the target controller is different from the version information of the upgrade package, issuing the software upgrade package to the OTA according to the VIN code; when the version information of the target controller of any vehicle to be updated is the same as that of the software upgrading package, marking that the vehicle to be updated is upgraded and updated successfully, and performing step S2 again, and configuring a new OTA task list and a corresponding software upgrading package.
S5, when the vehicle to be updated meets the OTA upgrading requirement, calibrating the control parameters of the peripheral devices of the vehicle to be updated through application layer software; and when the vehicle to be updated does not meet the OTA upgrading requirement, re-implementing the steps S2-S4 until the vehicle to be updated meets the OTA upgrading requirement. The upgrade requirement of the OTA may be to reach a preset upgrade time.
And S6, after calibration is completed, the application layer software is updated by OTA, meanwhile, a Boot loader is used for replacing the application layer software to control all hardware interfaces, the Boot loader reads and executes control parameters corresponding to more than one peripheral device, and each peripheral device is controlled to run by the corresponding control parameters through the hardware interfaces, so that the purpose of batch control of the peripheral devices during batch update of the application layer software is achieved.
Preferably, before the VIN code of the vehicle to be updated identifies the control parameter linked to the VIN code, the control parameter of the peripheral device corresponding to the vehicle to be updated can be customized.
In the second embodiment, the host factory vehicle management system background calibrated and upgraded by the ECU OTA software can identify the vehicle model and the actual configuration through the VIN code, so the host factory vehicle management system needs to link the vehicles of different models and different configurations with the peripheral device control parameters of the controllers corresponding to the vehicles.
After the parameter link configuration is completed, before OTA updating is carried out on vehicle software in batches, a round of calibration operation is carried out, namely when an upgrade package is configured, the vehicle model and configuration are identified in a vehicle management system through a vehicle VIN code so as to link the control parameters of the corresponding peripheral devices. The host factory authority can also manually select the control parameters of the peripheral device, if the step of skipping the set parameters is selected without modification, the software version instruction of each target controller is directly obtained, and after the feedback of the software version information of each target controller is received, if the software version information of the software upgrading package is inconsistent with the software version information fed back by the target controller, the software upgrading package can be normally issued.
When the preset upgrading time is reached, the OTA system firstly sends an upgrading state detection instruction to detect the vehicle state. When the vehicle feedback meets the requirement of the upgrading state, the control parameters of the peripheral devices of the controller are calibrated, after feedback information of the calibrated devices is received, OTA upgrading instructions are sent out, and the software of the application layer of the controller is updated. And when the vehicle feedback does not meet the upgrading requirement, the OTA software is not calibrated and updated.
In the last step, when the calibration state is fed back, the value in the storage address is not checked, the calibration is fed back and completed after the process is finished, and because the OTA can judge the conditions of power supply gears, vehicle gears, torque and the like, the conditions are generally strict, the calibration can not fail when the OTA judges the conditions. If the calibration fails, the OTA judgment condition is not basically met, and the OTA process is quitted immediately.
And the calibrated control parameters of the peripheral device are stored in a public data storage area by application layer software, and backup operation of all the control parameters is carried out. The address areas with the positions having the difference as far as possible are selected from the calibrated storage address area of the control parameter and the backup storage address area of the control parameter, and because the storage addresses are damaged and have the continuity characteristic, the two groups of storage addresses can be prevented from being damaged at the same time.
The acquired control parameters of the peripheral device can be determined by self according to different ECUs, and both application layer software and bootloader software developers need to define well in advance. For example, the control parameters of the ECU of the vehicle control unit include device control type, active level, PWM frequency, PWM duty ratio, check code, etc.
When the application layer software is updated, the software can run and jump to Bootloader software, and the Bootloader reads control parameters such as device control types, effective levels, PWM frequencies, PWM duty ratios, check codes and the like from a public data area; and the parameter calibration of the calibrated control parameters is carried out in the parameter calibration module, a calibration algorithm is defined by the host factory according to enterprise standards, and device control with required control is carried out after the calibration is passed.
In the parameter checking process, when the parameter is not checked to pass, the backup control parameter is checked, when the parameter passes the checking, the Bootloader controls the peripheral devices by using the backup control parameter and outputs corresponding level and duty ratio, the Bootloader reads and executes the control parameter corresponding to more than one checked peripheral devices, and controls each peripheral device to run by using the corresponding control parameter through a hardware interface, so that the peripheral devices are controlled in batch when the application layer software is updated in batch.
If the two groups of parameters do not pass the verification, the control is carried out according to the backup control parameters, when the specific control step is application layer software updating, the Boot loader reads and executes the control parameters corresponding to more than one peripheral device passing the verification, and controls each peripheral device to run according to the corresponding control parameters through the hardware interface, because the control parameters are not all wrong when the verification is failed, the corresponding peripheral devices can still be controlled to normally work through partial control parameters. At this time, it is also necessary to store fault information into a storage address agreed with the application layer software in advance, so as to display a fault code after the program update is completed (the fault code may be sent through the diagnostic protocol only when the application layer software is running, but a fault Bootloader in the storage space may be stored first).
After the application layer software is updated, the software jumps to the operation of new application layer software, the peripheral device recovers the control of the application layer software, the application layer software can regularly detect whether at least one group of the acquired control parameters of the peripheral controller and the backed-up group of control parameters can be successfully verified during the operation, and otherwise, fault information can be stored into a storage address which is agreed with the application layer software to display a fault code and remind clients and workers.
The step of displaying the fault code comprises the following steps: when the application layer software runs, the fault code and the VIN code are bound through the communication protocol and are sent to the vehicle management system, and the vehicle management system marks that the vehicle is in fault according to the received fault code and the VIN code.
In the embodiment, the vehicle management system updates the database through networking, and realizes the updating of the control parameters of the vehicle management system.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and scope of the present invention should be included in the present invention.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Claims (9)
1. A control method for peripheral devices during batch update of ECU application layer software is characterized by comprising the following steps:
s1, identifying the control parameters of the peripheral device correspondingly linked with the VIN code through the VIN code of the vehicle to be updated;
s2, configuring an OTA task list and a corresponding software upgrading package;
s3, acquiring the version information of the target controller of each vehicle to be updated;
s4, judging whether the software version information of the target controller is the same as the version information of the software upgrading packet, and when the software version information of the target controller is different from the version information of the software upgrading packet, issuing the software upgrading packet to the OTA client according to the VIN code;
s5, when the vehicle to be updated meets the OTA upgrading requirement, calibrating the control parameters of the vehicle to be updated through the application layer software;
and S6, after calibration is completed, the application layer software is updated by OTA, meanwhile, a Boot loader is used for replacing the application layer software to control all hardware interfaces, the Boot loader reads and executes control parameters corresponding to more than one peripheral device, and each peripheral device is controlled to operate according to the corresponding control parameters through the hardware interfaces.
2. The control method according to claim 1, characterized by further comprising:
in step S5, when the vehicle to be updated does not meet the OTA upgrade requirement, the steps S2-S4 are implemented again until the vehicle to be updated meets the OTA upgrade requirement.
3. The control method according to claim 1, characterized by further comprising:
in step S4, when the version information of the target controller of any of the vehicles to be updated is the same as the version information of the software upgrade package, the success of the upgrade update of the vehicle to be updated is marked, and step S3 is re-implemented.
4. The control method according to claim 1, characterized in that before the application layer software is updated in batch, control parameters of peripheral devices corresponding to the vehicle to be updated are defined according to the actual configuration and the device model of the vehicle.
5. The control method according to any one of claims 1, further comprising customizing control parameters of peripheral devices corresponding to the vehicle to be updated, before step S1.
6. The control method of claim 4, wherein the control parameters defined according to the actual configuration and device model of the vehicle are linked with the vehicle VIN code.
7. The control method of claim 5, characterized in that the customized control parameters of the peripheral device are linked with the vehicle VIN code before the control parameters correspondingly linked therewith are identified by the VIN code of the vehicle to be updated.
8. A control method according to any of claims 1 or 2, wherein the OTA upgrade requirement is to reach a pre-set upgrade time.
9. A storage medium which is a computer-readable storage medium having stored thereon an executable computer program for executing a control method of a hydrogen energy automobile peripheral device according to any one of claims 1 to 8.
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