CN105955850A - Abnormal reset processing method and system for vehicle control unit - Google Patents
Abnormal reset processing method and system for vehicle control unit Download PDFInfo
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- CN105955850A CN105955850A CN201610339184.3A CN201610339184A CN105955850A CN 105955850 A CN105955850 A CN 105955850A CN 201610339184 A CN201610339184 A CN 201610339184A CN 105955850 A CN105955850 A CN 105955850A
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- 238000001514 detection method Methods 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 23
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- 238000004458 analytical method Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000013278 delphi method Methods 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2015—Redundant power supplies
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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Abstract
The invention provides an abnormal reset processing method and system for a vehicle control unit. The method comprises the steps of pre-determining abnormal reset detection parameters; pre-arranging a data temporary storage space and a data backup space for the abnormal reset detection parameters; after the control unit is powered on, when data of the abnormal reset detection parameters is changed, storing the changed data in the corresponding data temporary storage space until the control unit is powered off; and if abnormal reset occurs to the control unit, storing the data of the data temporary storage space in the data backup space. The data temporary storage space is not subjected to data initialization when a system is started, and the abnormal reset detection parameters are related to the abnormal reset, so that the data of the data temporary storage space can be stored in the data backup space during the abnormal reset, the data loss is avoided, and a reason for the abnormal reset can be analyzed according to the backup data.
Description
Technical field
The present invention relates to technical field of automobile control, abnormal multiple particularly to a kind of vehicle control unit
Position processing method and system.
Background technology
Along with developing rapidly of automobile electronics, car load electric function increase causes the control list of car load
Unit, such as electronic control unit (Electronic Control Unit, ECU), microprocessing unit
The quantity of control units such as (Microcontroller Unit, MCU) is greatly increased, ECU etc. simultaneously
The control logic complexity of control unit is also improving constantly, and which adds control unit abnormal
The risk resetted.
Control unit exceptional reset is exactly in control unit normally works, because of self software fault, hard
The factors such as part design defect or external interference, cause the phenomenon that control unit is restarted.When control unit is different
When often resetting, its load system controlled will be in unknown state, and specific works state is it is possible to be in
Unexpected state, and for automobile electronics, this runaway condition means driver, takes advantage of
The personal safety and safety of property of member is by serious threat, and therefore, control unit exceptional reset is unacceptable
's.In order to ensure stability and the reliability of control unit, exceptional reset detection, process just seem outstanding
For important.
Summary of the invention
The present invention provides a kind of vehicle control unit exceptional reset processing method and system, it is intended to solve
The reluctant problem of control unit exceptional reset in prior art.
The invention provides a kind of vehicle control unit exceptional reset processing method, including:
Predetermined exceptional reset detection parameter, described exceptional reset detection parameter includes: microcontroller list
Unit's reset source, also includes following any one or more parameter: code when occurring that resets perform address and
Before resetting, code execution path, control unit when occurring that resets run load and state, network-bus fortune
Row state, nonvolatile memory running status, each reset source frequency, supply voltage state；
It is that each abnormal reset detection parameter divides data temporary memory space and data backup space in advance,
Wherein, data temporary memory space does not carry out data initialization, described data backup when system start-up
Space is appointment region in nonvolatile memory；
After control unit powers on, when the data of exceptional reset detection parameter occur change, by change
Data store the data temporary memory space of correspondence；
If control unit generation exceptional reset, then each data of data temporary memory space are stored in number
According to backup space.
Preferably, described data temporary memory space is appointment region in random access memory.
Preferably, described data backup space includes at least one memory area, and each memory area is used
The data of exceptional reset detection parameter in time storing an exceptional reset.
Preferably, control unit exceptional reset is electrification reset, wakes up up outside reset and internal reset
Control unit resets.
Preferably, described exceptional reset detection parameter includes: control unit when occurring that resets runs load
And state and micro-control unit reset source, also include following any one or more parameter: reset and occur
Time code perform address and reset before code execution path, reset occur time control unit run load and
State, network-bus running status, nonvolatile memory running status, each reset source frequency,
Supply voltage state；
Described method also includes: if control unit generation exceptional reset, then store sky from data temporarily
Read control unit when occurring that resets between and run initial as corresponding parameter of the data of load and state
Data.
Preferably, described method also includes:
When system exception power-off, using uninterrupted power source as the power supply of system, data are stored temporarily
Each data in space are stored in data backup space.
Correspondingly, additionally provide a kind of vehicle control unit exceptional reset processing system, including:
Parameter determination module, is used for predefining exceptional reset detection parameter, and described exceptional reset detects
Parameter includes: micro-control unit reset source, also includes following any one or more parameter: reset and send out
Before time raw, code performs address and resets, code execution path, control unit when occurring that resets run load
And state, network-bus running status, nonvolatile memory running status, each reset source occur secondary
Number, supply voltage state；
Space partitioning module, stores sky for dividing data for each abnormal reset detection parameter in advance temporarily
Between and data backup space, wherein, data temporary memory space is not carried out at the beginning of data when system start-up
Beginningization, described data backup space is appointment region in nonvolatile memory；
Data memory module, after electricity on the control unit, when the data of exceptional reset detection parameter
When there is change, the data of change are stored the data temporary memory space of correspondence；
Data backup module, if for control unit generation exceptional reset, then stored data temporarily
Each data in space are stored in data backup space.
Preferably, described data temporary memory space is appointment region in random access memory.
Preferably, described exceptional reset detection parameter includes: control unit when occurring that resets runs load
And state and micro-control unit reset source, also include following any one or more parameter: reset and occur
Time code perform address and reset before code execution path, reset occur time control unit run load and
State, network-bus running status, nonvolatile memory running status, each reset source frequency,
Supply voltage state；
Described system also includes: data repair module, if for control unit generation exceptional reset,
From data temporary memory space, then read control unit when occurring that resets run load and the data of state
Primary data as corresponding parameter.
Preferably, described system also includes:
Uninterrupted power source, for when system exception power-off, using uninterrupted power source as the power supply of system,
Perform data backup module.
The invention discloses a kind of vehicle control unit exceptional reset processing method and system, predetermined
Exceptional reset detection parameter, and be that each abnormal reset detection parameter divides data temporary memory space and number
According to backup space, after control unit powers on, when there is change in the data of exceptional reset detection parameter,
The data of change are stored the data temporary memory space of correspondence, until control unit power down, period,
If control unit generation exceptional reset, then each data of data temporary memory space are stored in data standby
Part space.Owing to data temporary memory space does not carry out data initialization, described number when system start-up
It is appointment region in nonvolatile memory according to backup space, when control unit generation exceptional reset,
The data of the storage of data temporary memory space then can be stored in data backup space, and abnormal multiple
Position detection parameter includes: micro-control unit reset source, also includes following any one or more parameter: multiple
Before when position occurs, code performs address and resets, code execution path, control unit when occurring that resets are run
Load and state, network-bus running status, nonvolatile memory running status, each reset source are sent out
Raw number of times, supply voltage state；These parameters be all rule of thumb accumulation or abundant experimental results statistics,
What analysis obtained can be so that attendant, user, developer be according to exceptional reset detection parameter
The reason of data analysis generation exceptional reset, with the problem fundamentally solving control unit exceptional reset.
Further, described data temporary memory space is appointment region in random access memory, so
Can guarantee that the efficient data temporary memory space that in real time data of change are stored correspondence.Described number
According to backup space be in nonvolatile memory appointment region, when so can guarantee that system power failure, not because of
Cause loss of vital data for random access memory power down, related data information during exceptional reset is entered
Row backup.
Further, the data backup space that the present invention provides includes at least one memory area, Mei Gecun
Storage area territory is the data of exceptional reset detection parameter when exceptional reset of storage.As such, it is possible to root
The data that how many times exceptional reset is relevant are stored according to the requirements set of client or attendant etc., it is simple to point
There is the reason of exceptional reset in analysis, with the problem fundamentally solving control unit exceptional reset.And
Data can be stored according to the principle of first in first out, so will not take too much memory space, and will not
Cause too much redundant data.
Further, the invention provides the detection method of control unit exceptional reset: control unit upper
Reset, wake up up reset and internal reset outside reset be exceptional reset, so can be the fastest
Whether the prompt reset judging current control unit is exceptional reset.
Further, described exceptional reset detection parameter includes: control unit when occurring that resets is run negative
Carry and state and micro-control unit reset source, also include following any one or more parameter: reset and send out
Before time raw, code performs address and resets, code execution path, control unit when occurring that resets run load
And state, network-bus running status, nonvolatile memory running status, each reset source occur secondary
Number, supply voltage state；Described method also includes: if control unit generation exceptional reset, then from
Data temporary memory space reads control unit when occurring that resets and runs load and the data conduct of state
The primary data of corresponding parameter.So, when control unit generation exceptional reset, can the very first time
From data temporary memory space, read the data of control unit operation load and state when occurring that reset make
Primary data for corresponding parameter, it is to avoid owing to exceptional reset causes control unit to run load, such as
Car door lock, child lock etc. are likely to be at unknown state, the problem of serious threat occupant safety.
Further, the method that the present invention provides also includes: when system exception power-off, with uninterruptedly
Each data of data temporary memory space, as the power supply of system, are stored in data backup space by power supply.
So, when system exception power-off, each data of data temporary memory space can be stored in data standby
Part space, it is to avoid the loss of data of important parameter, helps analyze abnormal cause or preserve work at present shape
The data of each abnormal reset detection parameter of state.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to enforcement
In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Some embodiments described in the present invention, for those of ordinary skill in the art, it is also possible to according to these
Accompanying drawing obtains other accompanying drawing.
Fig. 1 is the vehicle control unit exceptional reset processing method that provides according to the embodiment of the present invention
A kind of flow chart；
Fig. 2 determines the stream of exceptional reset detection parameter for the Delphi method provided according to the embodiment of the present invention
Cheng Tu；
Fig. 3 is the vehicle control unit exceptional reset processing system that provides according to the embodiment of the present invention
A kind of structural representation；
Fig. 4 is the vehicle control unit exceptional reset processing system that provides according to the embodiment of the present invention
Another kind of structural representation.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or there is same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
Vehicle control unit exceptional reset processing method and the system that the present invention provides, first according to reality
In the application of border, the importance of each parameter of system, determines that the exceptional reset needing to prevent loss of data detects
Parameter, and specify the data not carrying out data initialization when system start-up to store for these parameters temporarily
Space, these spaces are for storing the data of up-to-date exceptional reset detection parameter, when control unit is sent out
During raw exceptional reset, it is possible to the data before resetting store the data backup space of correspondence, with right
These data back up, it is simple to be analyzed and troubleshooting according to each data of backup.
In order to be better understood from technical scheme and technique effect, below with reference to flow chart and
Specific embodiment is described in detail.
Embodiments provide a kind of vehicle control unit exceptional reset processing method, its flow process
As it is shown in figure 1, comprise the following steps:
S01, predetermined exceptional reset detection parameter, described exceptional reset detection parameter includes: micro-control
Unit reset source processed, also includes following any one or more parameter: code when occurring that resets performs ground
Location and code execution path before resetting, reset when occurring that control unit runs load and state, network are total
Line running status, nonvolatile memory running status, each reset source frequency, supply voltage shape
State.
In the present embodiment, each parameter of control unit of system and exception in can applying according to reality
The dependency resetted, determines the exceptional reset detection parameter needing to prevent loss of data, this control unit
Can be ECU, MCU etc., the exceptional reset detection parameter of different control units needs according to actual need
Ask and determine.
To illustrate as a example by entire car controller (Body Control Module, BCM), BCM is controlled
Object processed gets more and more, and the function of associated electronic device also gets more and more, and various functions are required for passing through
BCM realizes so that BCM function is more powerful, and the information sharing between each electronic equipment is more
Coming the most, an information can be simultaneously for many parts, and this just requires the data communication function of BCM
Increasingly stronger, and must assure that the reliability of the data of its relevant parameter is higher, once occur multiple
Position phenomenon, then its load system controlled will be in unknown state, and specific works state is it is possible to non-
Expecting state, this person directly affecting occupant and property safety.
Which supplemental characteristic is analyzed according to experience or the abundant experimental results of accumulation during research and development or use
With exceptional reset correlation maximum, and be easy to analyze exceptional reset reason, using these parameters as different
Often reset detection parameter, for example, it is possible to beforehand through Experts consultation method, as the most true in Delphi method etc.
The exceptional reset detection parameter of fixed various control units, Delphi method determines exceptional reset detection parameter
Flow chart is as shown in Figure 2.
In a specific embodiment, described exceptional reset detection parameter includes: micro-control unit resets
Source, also includes following any one or more parameter: before code when occurring that resets performs address and resets
Code execution path, reset occur time control unit run load and state, network-bus running status,
Nonvolatile memory running status, micro-control unit reset source, each reset source frequency, power supply
Voltage status.Preferably, when occurring with micro-control unit reset source, reset, code performs address and answers
The front code execution path in position, control unit when occurring that resets run load and state, network-bus operation
State detects parameter as exceptional reset.System resource allow in the case of or according to the actual requirements,
Other parameters can also detect parameter as exceptional reset, and certainly, other influences controller runs load
The parameter of factor, according to different system characteristic, can make a concrete analysis of.
S02, is that each abnormal reset detection parameter divides data temporary memory space and data backup is empty in advance
Between, wherein, data temporary memory space does not carry out data initialization, described data when system start-up
Backup space is appointment region in nonvolatile memory.
In the present embodiment, described data temporary memory space is appointment region in random access memory,
Specifically, random access memory can be effumability random access memory (Ramdom Access
Memory, RAM) etc. the memorizer of zero access, its advantage is that access time is equal, and and address
Unrelated, such as calculator memory etc..It is initial that data temporary memory space does not carry out data when system start-up
Changing, on main ECU chip or MCU, divide certain RAM district, this RAM district is in system start-up
Time do not do data initialization, for retain current reset occur before data.Specifically, to needs heat
Starting the variable kept, use _ _ at keyword is specified the mode in certain region to realize, is the most no longer described in detail.
After resetting, being recorded data and be stored in internal memory, these part data will be lost after a power failure
Lose, it is therefore desirable to divide a panel region in the nonvolatile memory for these part data and go through for backup
History data, if needing the corresponding data before recording repeatedly exceptional reset, it is necessary to divide multiple storage
Region, each memory area is the data of exceptional reset detection parameter when exceptional reset of storage.
As such, it is possible to store what how many times exceptional reset was correlated with according to the requirements set of client or attendant etc.
Data, it is simple to analyze the reason that exceptional reset occurs, fundamentally to solve control unit exceptional reset
Problem.And data can be stored according to the principle of first in first out, so will not take too much storage
Space, and do not result in too much redundant data.Specifically, described data backup space can be non-easily
The property lost memorizer, such as nonvolatile storage (Electrically Erasable Programmable
Read-Only Memory, EEPROM), nonvolatile random access memory (Non-Volatile
Random Access Memory, NVRAM), when so can guarantee that system power failure, not because at random
Memorizer power down and cause loss of vital data, related data information during exceptional reset is backed up.
Step S03, after control unit powers on, when there is change in the data of exceptional reset detection parameter,
The data of change are stored the data temporary memory space of correspondence, until control unit power down.
In the present embodiment, i.e. start after control unit powers on to monitor exceptional reset detection parameter in real time
Whether data change, and after finding data change, the data that will change store the number of correspondence
According to temporary memory space, until control unit power down.So can ensure that the data of backup are for abnormal multiple
Latest data before the generation of position, is conducive to analyzing the real causes that exceptional reset occurs.
Step S04, if control unit generation exceptional reset, then each by data temporary memory space
Data are stored in data backup space.
In actual applications, when needing to analyze exceptional reset occurrence cause, can be by data backup space
Data read-out, for example, it is possible to by UDS Diagnosis Service, $ 22 service realizes digital independent,
It is 4K to the maximum because it reads data, digital independent function can be realized by a plurality of service.Can certainly
Take other prior aries to carry out digital independent, do not limit at this.
Further, described exceptional reset detection parameter includes: control unit when occurring that resets is run negative
Carry and state and micro-control unit reset source, also include following any one or more parameter: reset and send out
Before time raw, code performs address and resets, code execution path, control unit when occurring that resets run load
And state, network-bus running status, nonvolatile memory running status, each reset source occur secondary
Number, supply voltage state；Described method also includes: if control unit generation exceptional reset, then from
Data temporary memory space reads control unit when occurring that resets and runs load and the data conduct of state
The primary data of corresponding parameter.
In actual applications, it is achieved after exceptional reset identification, it is possible to realize exceptional reset troubleshooting.
Troubleshooting seeks to the most quickly eliminate the impact that exceptional reset causes.Specifically, can be by
Before system reset, (control unit when occurring that resets runs load and the number of state to each load operation conditions
According to) record is at data temporary memory space, when exceptional reset being detected, by the control load of record
And running status, the very first time load control bit is returned to record running status, eliminate it and cause
Impact, it is to avoid system disorders, provide safeguard for occupant safety.
In embodiments of the present invention, determine need to prevent loss of data exceptional reset detection parameter after,
Specifying data temporary memory space for these parameters, these spaces are for storing up-to-date exceptional reset inspection
Survey the data of parameter, when control unit generation exceptional reset, owing to this data temporary memory space exists
Data initialization is not carried out, it is possible to by the data of the storage of data temporary memory space during system start-up
It is stored in data backup space, and exceptional reset detection parameter includes: micro-control unit reset source, also wraps
Include following any one or more parameter: before code when occurring that resets performs address and resets, code performs
Load and state, network-bus running status, non-volatile are run in path, control unit when occurring that resets
Property memorizer running status, micro-control unit reset source, each reset source frequency, supply voltage shape
State；These parameters be all rule of thumb accumulation or abundant experimental results statistics, analyze obtain can so that
Attendant, user, developer are analyzed and troubleshooting according to the data of exceptional reset detection parameter.
In other embodiments, present invention also offers the detection method of control unit exceptional reset, tool
Body ground, control unit exceptional reset is electrification reset, wakes up the control list resetted and outside internal reset up
Unit resets.
In a specific embodiment, control unit exceptional reset can be by the reset of MCU chip
Source obtains.General MCU chip can provide following several wake source, electrification reset, external wake
Interruption reset condition, RESET pin reset (outer watchdog reset), software reset, low voltage resetting,
Illegal instruction reset etc.；These reset source can be divided into four classes, and 1, electrification reset: i.e. in system
The reset occurred during electricity；2, wake up reset up: i.e. system is when resting state, waken up up by external wake source
Reset；3, internal reset: i.e. software reset, this is reset to system and receives what diagnosis request triggered
Reset the reset occurred when normal application jumps to downloaded software with system；4, exceptional reset.
Above-mentioned front 3 classes are reset to system normal reset, and the reset occurred in the case of other is exceptional reset,
Common exceptional reset includes but not limited to: illegally instruct reset, data overflow reset, task time-out
Reset, low voltage resetting, watchdog reset etc..Specifically, the detection method of electrification reset is that system is broken
Again power on after electricity, read electrification reset parameter, it appeared that: often power-off of experience powers on, on
The data of reset parameter can add up；The detection method waking up reset up is to possess the electricity of dormancy awakening function
Control unit, system in a dormant state under, trigger wake events, after system wake-up, reading is called out
Awake reset parameter, the most often wake actions of experience, the data waking up reset parameter up can add up；In
The detection method that portion resets be internal reset be software positive return, at ECU self diagnosis and soft
After part renewal in restarting process, typically during renewal completes an application software (App),
2 internal resets can occur, the most often complete an App and update, the data of internal reset parameter can be tired out
Add 2 times.
In another embodiment, the method that the present invention provides also includes: when system exception power-off,
Using uninterrupted power source as the power supply of system, each data of data temporary memory space are stored in data standby
Part space.
In the present embodiment, uninterrupted power source, such as UPS or on-board battery etc., when system exception breaks
During electricity, each data of data temporary memory space can be stored in data backup space, it is to avoid important ginseng
The loss of data of number, helps analyze abnormal cause or preserve each abnormal reset detection of current operating state
The data of parameter.
Correspondingly, present invention also offers the vehicle control unit exceptional reset corresponding with said method
Processing system, as it is shown on figure 3, include:
Parameter determination module 301, is used for predefining exceptional reset detection parameter, described exceptional reset
Detection parameter includes: micro-control unit reset source, also includes following any one or more parameter: multiple
Before when position occurs, code performs address and resets, code execution path, control unit when occurring that resets are run
Load and state, network-bus running status, nonvolatile memory running status, each reset source are sent out
Raw number of times, supply voltage state；
Space partitioning module 302, deposits for dividing data for each abnormal reset detection parameter in advance temporarily
Storage space and data backup space, wherein, data temporary memory space does not counts when system start-up
According to initialization, described data backup space is appointment region in nonvolatile memory；
Data memory module 303, after electricity on the control unit, when exceptional reset detection parameter
When data occur change, the data of change are stored the data temporary memory space of correspondence,
Data backup module 304, if for control unit generation exceptional reset, then data are interim
Each data of memory space are stored in data backup space.
Preferably, described exceptional reset detection parameter includes above-mentioned all parameters.These parameters are all bases
Experience accumulation or abundant experimental results are added up, analysis obtains, and the dependency of these parameters and exceptional reset is relatively
Greatly, i.e. can be according to the reason of the data analysis generation exceptional reset of these parameters, in order to carry out troubleshooting, enter
And ensure the safety of occupant.
In the present embodiment, described data temporary memory space is appointment region in random access memory；
Described data backup space is appointment region in nonvolatile memory.When so can guarantee that system power failure,
Do not cause loss of vital data because of random access memory power down, dependency number during exceptional reset be it is believed that
Breath backs up.
Preferably, described data backup space includes at least one memory area, and each memory area is used
The data of exceptional reset detection parameter in time storing an exceptional reset.It is specially how many memory areas,
Can according to demand depending on.
Further, for avoiding because system cut-off causes the loss of data of exceptional reset detection parameter, institute
System of stating also includes: uninterrupted power source, for when system exception power-off, using uninterrupted power source as
The power supply of system, performs data backup module 304.
A kind of vehicle control unit exceptional reset processing system that the embodiment of the present invention provides, by ginseng
Number determines that module 301 predefines exceptional reset detection parameter, by space partitioning module 302 in advance
Data temporary memory space and data backup space, wherein, number is divided for each abnormal reset detection parameter
Not carrying out data initialization when system start-up according to temporary memory space, described data backup space is non-
Volatile memory is specified region, by data memory module 303 when exceptional reset detection parameter
When data occur change, the data of change are stored the data temporary memory space of correspondence, by number
According to backup module 304 when control unit generation exceptional reset, by each number of data temporary memory space
According to being stored in data backup space.Owing to data temporary memory space is not carried out at the beginning of data when system start-up
Beginningization, can store the latest data of exceptional reset detection parameter, when control unit generation exceptional reset
Time, by data backup module 304, each data of data temporary memory space can be stored in data standby
Part space, it is simple to attendant, user, developer divide according to the data of exceptional reset detection parameter
There is the reason of exceptional reset in analysis, with the problem fundamentally solving control unit exceptional reset.
In other embodiments, as shown in Figure 4, the another kind of vehicle provided for the embodiment of the present invention is used
The structural representation of control unit exceptional reset processing system includes:
Described exceptional reset detection parameter include: reset occur time control unit run load and state and
Micro-control unit reset source, also includes following any one or more parameter: code when occurring that resets is held
When row address and the front code execution path that resets, reset generation, control unit runs load and state, net
Network bus running status, nonvolatile memory running status, each reset source frequency, power supply electricity
Pressure condition；Described system also includes: data repair module 405, if occurring different for control unit
Often reset, then from data temporary memory space, read control unit when occurring that resets run load and shape
The data of state are as the primary data of corresponding parameter.
In embodiments of the present invention, after realizing exceptional reset identification, it is possible to repair mould by data
Block 405 realizes exceptional reset troubleshooting.It is abnormal the most multiple that troubleshooting seeks to as far as possible quickly elimination
The impact that position is caused.Such as can be by data memory module 303 by each load fortune before system reset
Row state (control unit when occurring that resets runs load and the data of state) record is deposited in data temporarily
Storage space, when exceptional reset being detected, by data memory module 303 record control load and
Running status, the very first time utilize data repair module 405 load control bit is returned to record fortune
Row state, eliminates its impact caused, it is to avoid system disorders, provides safeguard for occupant safety.
Each embodiment in this specification all uses the mode gone forward one by one to describe, phase between each embodiment
As homophase, part sees mutually.For system embodiment, due to its basic phase
Being similar to embodiment of the method, so describing fairly simple, relevant part sees the part of embodiment of the method
Illustrate.System embodiment described above is only schematically, wherein said as separating
The unit of part description can be or may not be physically separate, the portion shown as unit
Part can be or may not be physical location, i.e. may be located at a place, or can also divide
Cloth is on multiple artificial windows.Some or all of module therein can be selected according to the actual needs
Realize the purpose of the present embodiment scheme.Those of ordinary skill in the art are not paying creative work
In the case of, i.e. it is appreciated that and implements.
Although the present invention discloses as above with preferred embodiment, but is not limited to the present invention.Appoint
What those of ordinary skill in the art, without departing under technical solution of the present invention ambit, all can profit
With the method for the disclosure above and technology contents, technical solution of the present invention made many possible variations and repair
Decorations, or it is revised as the Equivalent embodiments of equivalent variations.Therefore, every without departing from technical solution of the present invention
Content, according to the technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent
Change and modification, all still fall within the range of technical solution of the present invention protection.
Claims (10)
1. a vehicle control unit exceptional reset processing method, it is characterised in that including:
Predetermined exceptional reset detection parameter, described exceptional reset detection parameter includes: microcontroller list
Unit's reset source, also includes following any one or more parameter: code when occurring that resets perform address and
Before resetting, code execution path, control unit when occurring that resets run load and state, network-bus fortune
Row state, nonvolatile memory running status, each reset source frequency, supply voltage state；
It is that each abnormal reset detection parameter divides data temporary memory space and data backup space in advance,
Wherein, data temporary memory space does not carry out data initialization, described data backup when system start-up
Space is appointment region in nonvolatile memory；
After control unit powers on, when the data of exceptional reset detection parameter occur change, by change
Data store the data temporary memory space of correspondence；
If control unit generation exceptional reset, then each data of data temporary memory space are stored in number
According to backup space.
Method the most according to claim 1, it is characterised in that described data temporary memory space
For random access memory is specified region.
Method the most according to claim 1, it is characterised in that described data backup space includes
At least one memory area, the exceptional reset detection when exceptional reset of storage of each memory area
The data of parameter.
Method the most according to claim 1, it is characterised in that control unit exceptional reset is upper
Reset, wake up up reset and internal reset outside control unit reset.
5. according to the method described in any one of Claims 1-4, it is characterised in that
Described exceptional reset detection parameter include: reset occur time control unit run load and state and
Micro-control unit reset source, also includes following any one or more parameter: code when occurring that resets is held
When row address and the front code execution path that resets, reset generation, control unit runs load and state, net
Network bus running status, nonvolatile memory running status, each reset source frequency, power supply electricity
Pressure condition；
Described method also includes: if control unit generation exceptional reset, then store sky from data temporarily
Read control unit when occurring that resets between and run initial as corresponding parameter of the data of load and state
Data.
6. according to the method described in any one of Claims 1-4, it is characterised in that described method is also
Including:
When system exception power-off, using uninterrupted power source as the power supply of system, data are stored temporarily
Each data in space are stored in data backup space.
7. a vehicle control unit exceptional reset processing system, it is characterised in that including:
Parameter determination module, is used for predefining exceptional reset detection parameter, and described exceptional reset detects
Parameter includes: micro-control unit reset source, also includes following any one or more parameter: reset and send out
Before time raw, code performs address and resets, code execution path, control unit when occurring that resets run load
And state, network-bus running status, nonvolatile memory running status, each reset source occur secondary
Number, supply voltage state；
Space partitioning module, stores sky for dividing data for each abnormal reset detection parameter in advance temporarily
Between and data backup space, wherein, data temporary memory space is not carried out at the beginning of data when system start-up
Beginningization, described data backup space is appointment region in nonvolatile memory；
Data memory module, after electricity on the control unit, when the data of exceptional reset detection parameter
When there is change, the data of change are stored the data temporary memory space of correspondence；
Data backup module, if for control unit generation exceptional reset, then stored data temporarily
Each data in space are stored in data backup space.
System the most according to claim 7, it is characterised in that
Described data temporary memory space is appointment region in random access memory.
9. according to the system described in claim 7 or 8, it is characterised in that
Described exceptional reset detection parameter include: reset occur time control unit run load and state and
Micro-control unit reset source, also includes following any one or more parameter: code when occurring that resets is held
When row address and the front code execution path that resets, reset generation, control unit runs load and state, net
Network bus running status, nonvolatile memory running status, each reset source frequency, power supply electricity
Pressure condition；
Described system also includes: data repair module, if for control unit generation exceptional reset,
From data temporary memory space, then read control unit when occurring that resets run load and the data of state
Primary data as corresponding parameter.
10. according to the system described in claim 7 or 8, it is characterised in that described system also includes:
Uninterrupted power source, for when system exception power-off, using uninterrupted power source as the power supply of system,
Perform data backup module.
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| CN201610339184.3A CN105955850A (en) | 2016-05-18 | 2016-05-18 | Abnormal reset processing method and system for vehicle control unit |
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| CN201610339184.3A CN105955850A (en) | 2016-05-18 | 2016-05-18 | Abnormal reset processing method and system for vehicle control unit |
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| CN108062259A (en) * | 2017-11-01 | 2018-05-22 | 联创汽车电子有限公司 | MCU internal data store ECC processing systems and its processing method |
| CN108073474A (en) * | 2016-11-18 | 2018-05-25 | 大陆汽车电子(芜湖)有限公司 | Suitable for the data processing method of automobile instrument |
| CN108768783A (en) * | 2018-06-08 | 2018-11-06 | 郑州云海信息技术有限公司 | A kind of method and system of loop test network connectivty |
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| CN113759872A (en) * | 2021-08-30 | 2021-12-07 | 上海伊控动力系统有限公司 | Processing method after controller reset |
| CN114200874A (en) * | 2022-02-17 | 2022-03-18 | 四川创智联恒科技有限公司 | Device and method for detecting equipment reset event |
| CN115167194A (en) * | 2022-05-26 | 2022-10-11 | 中国第一汽车股份有限公司 | Method, system, equipment and storage medium for optimizing reset start time of automotive AUTOSAR standard real-time controller |
| CN115933493A (en) * | 2022-12-27 | 2023-04-07 | 上海临港电力电子研究有限公司 | A method and system for processing abnormal information of electronic control monitoring software |
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| CN113759872A (en) * | 2021-08-30 | 2021-12-07 | 上海伊控动力系统有限公司 | Processing method after controller reset |
| CN114200874A (en) * | 2022-02-17 | 2022-03-18 | 四川创智联恒科技有限公司 | Device and method for detecting equipment reset event |
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| CN115167194B (en) * | 2022-05-26 | 2024-06-11 | 中国第一汽车股份有限公司 | Method, system, equipment and storage medium for optimizing resetting starting time of automotive AUTOSAR standard real-time controller |
| CN115933493A (en) * | 2022-12-27 | 2023-04-07 | 上海临港电力电子研究有限公司 | A method and system for processing abnormal information of electronic control monitoring software |
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