CN107264288A - The brake signal processing method of pure electric automobile - Google Patents
The brake signal processing method of pure electric automobile Download PDFInfo
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- CN107264288A CN107264288A CN201710391587.7A CN201710391587A CN107264288A CN 107264288 A CN107264288 A CN 107264288A CN 201710391587 A CN201710391587 A CN 201710391587A CN 107264288 A CN107264288 A CN 107264288A
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- brake signal
- brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention relates to the thermoacoustic prime engine field of pure electric automobile, a kind of brake signal processing method of pure electric automobile is disclosed, it includes：Step 1：Multiple controllers gather current brake signal state respectively, and respectively send brake signal state to bus；Step 2：Whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；Step 3：Perform braking strategy；Step 4：Synthetic determination per road brake signal state whether be it is effective, if be effectively if jump to step 5；Step 5：If there is any brake signal state to be all the way changed into invalid, step 6 is jumped to；Step 6：Synthetic determination brake signal state whether be it is invalid, if be it is invalid if think braking requirement cancel, recover driving states.This method can be accurately determined the braking requirement state of driver, to improve the security of pure electric automobile.
Description
Technical field
The present invention relates to the thermoacoustic prime engine field of pure electric automobile, and in particular at a kind of brake signal of pure electric automobile
Reason method.
Background technology
Traditional brake system structure pattern mainly have mechanically, pneumatic type, fluid pressure type, gas-liquid mixed.They
Operation principle substantially all, is all to utilize brake apparatus, and the frictional heat produced during with work is had to gradually use up vehicle
Kinetic energy, to reach vehicle braking deceleration, or until the purpose of parking.Opened along with the research of energy-conservation and clean energy vehicle
Hair, automobile dynamic system there occurs very big change, occur in that many new structural shapes and functional form.Novel power system
Appearance also require that corresponding change occurs for brake system structure pattern and functional form.
Pure electric automobile can be participated in braking procedure due to its special structure, reduce the demand braking force of machinery,
Improve the security performance of vehicle.The brake pedal signal arrangement and mode of current pure electric automobile are related generally to：On-off model,
The mode of analog signalses, switch+analog signalses, and reduce brake signal by the way of variable connector is gathered respectively
The risk of failure.Therefore when deviation occur in multiple signals, it is necessary to accurate judgement be made, to determine the request of current driver's
State.
The content of the invention
(1) technical problem to be solved
It is an object of the present invention to provide a kind of brake signal processing method of pure electric automobile, it is intended to accurately determines
The braking requirement state of driver, to improve the security of pure electric automobile.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of brake signal processing method of pure electric automobile, its
Comprise the following steps：
Step 1：Multiple controllers gather current brake signal state respectively, and respectively send out the brake signal state
Deliver to bus；
Step 2：Whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；
Step 3：Perform braking strategy；
Step 4：Synthetic determination per road brake signal state whether be it is effective, if be effectively if jump to step 5；
Step 5：If there is any brake signal state to be all the way changed into invalid, step 6 is jumped to；
Step 6：Synthetic determination brake signal state whether be it is invalid, if be it is invalid if think braking requirement cancel,
Recover driving states.
Wherein, in step 4, if not being effective per road brake signal state, following steps are performed：
Step 41：By invalid brake signal state and its acquisition mode, the condition of signal transmission is mutually tied with transmission rate
Close, analyze whether the road brake signal state has the possibility of transmission delay；
Step 42：Judge whether invalid brake signal state causes as signal transmission delay, if, then it is assumed that braking letter
Number verification uniformity pass through, jump to step 5.
Wherein, in step 42, cause if invalid brake signal state is not signal transmission delay, then it is assumed that have system
The failure that dynamic signal checking does not pass through, and the failure cause is kept a record, then jump to step 5.
Wherein, in step 6, whether the synthetic determination brake signal state is invalid comprise the following steps：
Step 61：By each road brake signal state, the condition and transmission rate transmitted with reference to its acquisition mode, signal, point
Whether have the possibility of transmission delay, if so, then taking respective threshold to analyze the braking for having transmission delay if analysing each brake signal state
Whether the corresponding braking requirement of signal condition disappears；
Step 62：Disappeared if all of braking requirement, then it is assumed that brake signal state be it is invalid, if all of
Braking requirement disappears without whole, then repeat step 61.
Wherein, also include between the step 2 and the step 3：Decide whether according to demand to being braked described in multichannel
Any road brake signal state in signal condition carries out synthetic determination.
Wherein, the brake signal type includes brake pedal switch amount signal, brake pedal analog signalses, brake pipe
Road pressure signal, brake piping air pressure signal.
Wherein, the condition of the signal transmission includes transmission condition, signal update cycle.
Wherein, the signal transmission rate includes network transmission rate in itself, message update cycle, controller computing week
Phase.
Wherein, the controller includes VSC, anti-lock braking system, without key activation system.
(3) beneficial effect
The brake signal processing method for the pure electric automobile that the present invention is provided, passes through entire car controller, ABS/ESC, PEPS
Gather current brake signal state respectively Deng controller, and send to bus, entire car controller braking more than is believed
Number state, it is considered to signal acquisition mode, the condition of transmission, transmission rate, the validity of synthetic determination brake signal, according to described
Result of determination, performs corresponding braking strategy.This method can be accurately determined the braking requirement state of driver, pure to improve
The security of electric automobile.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in brakes structural representation；
Fig. 2 be the embodiment of the present invention in brake signal processing method flow chart.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect or can communicate each other；Can be joined directly together, can also be indirectly connected to by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Herein, term " basic " covers " value in the range of ± 10% " of represented value；Term " on ", " under " no
It is intended to limit specific orientation, but for being illustrated with reference to accompanying drawing.
Fig. 1 shows a preferred embodiment of the brake signal processing method according to a kind of pure electric automobile of the invention.
As illustrated, the brake signal processing method includes：
Step 1：Multiple controllers gather current brake signal state respectively, and respectively by brake signal state send to
Bus；Wherein, brake signal type can include brake pedal switch amount signal, brake pedal analog signalses.
Step 2：Whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；Specifically,
Whether entire car controller, which gets effective brake signal condition, includes whether entire car controller receives effective brake signal from bus
Whether state, and entire car controller directly gather the effective brake signal condition of brake pedal.As long as entire car controller is from total
The effective brake signal condition that line reception effective brake signal condition and/or entire car controller directly gather brake pedal all thinks
It is that full-vehicle control controller gets effective brake signal condition.
Step 3：Perform braking strategy；
Step 4：Whether synthetic determination is effective per road brake signal state, if being effective, jumps to step 5；
Wherein, the synthetic determination includes the judgement of individual signals state validity, signal checking and assay prompting.
Step 5：If there is any brake signal state to be all the way changed into invalid, step 6 is jumped to；
Step 6：Synthetic determination brake signal state whether be it is invalid, if be it is invalid if think braking requirement cancel,
Recover driving states.
Preferably, in step 4, if not being effective per road brake signal state, following steps are performed：
Step 41：By invalid brake signal state and its acquisition mode, the condition of signal transmission is mutually tied with transmission rate
Close, analyze whether the road brake signal state has the possibility of transmission delay；Specifically, the condition of signal transmission includes sending bar
Part, signal update cycle.Transmission rate includes network transmission rate in itself, message update cycle, controller execution cycle.
Step 42：Judge whether invalid brake signal state causes as signal transmission delay, if, then it is assumed that braking letter
Number verification uniformity pass through, jump to step 5；Preferably, in step 42, if invalid brake signal state is not signal
Transmission delay causes, then it is assumed that have the failure that brake signal verification does not pass through, and the failure cause is kept a record, then jump to
Step 4.
Preferably, in step 6, whether the synthetic determination brake signal is invalid comprise the following steps：
Step 61：By each road brake signal, the condition and transmission rate transmitted with reference to its acquisition mode, signal, analysis is each
Whether brake signal has the possibility of transmission delay, if so, then taking respective threshold to analyze the brake signal state for having transmission delay
Whether corresponding braking requirement disappears；
Step 62：Disappeared if all of braking requirement, then it is assumed that brake signal state be it is invalid, if all of
Braking requirement disappears without whole, then repeat step 61.
Preferably, also include between step 2 and the step 3：Decide whether according to demand to braking letter described in multichannel
Any road brake signal state in number state carries out synthetic determination.
Preferably, multiple control implement bodies may include VSC (ESC), anti-lock braking system (ABS), be opened without key
Dynamic system (PEPS) etc. possesses the control unit of braking signal collection.Multiple controllers gather current brake signal shape respectively
State, and respectively send brake signal state to bus；Entire car controller gathers brake signal state from bus, and according to described
Brake signal state, the validity of synthetic determination brake signal, and entire car controller (VCU) is sent to bus according to result of determination
Brake signal state come determine recover driving states.
In summary, the brake signal processing method for the pure electric automobile that the present invention is provided, passes through entire car controller, ABS/
The controllers such as ESC, PEPS gather current brake signal state respectively, and send to bus, the entire car controller according to
Upper brake signal state, it is considered to signal acquisition mode, the condition of transmission, transmission rate, the validity of synthetic determination brake signal,
According to the result of determination, corresponding braking strategy is performed.This method can be accurately determined the braking requirement state of driver,
To improve the security of pure electric automobile.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. a kind of brake signal processing method of pure electric automobile, it is characterised in that the brake signal processing method include with
Lower step：
Step 1：Multiple controllers gather current brake signal state respectively, and respectively by the brake signal state send to
Bus；
Step 2：Whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；
Step 3：Perform braking strategy；
Step 4：Synthetic determination per road brake signal state whether be it is effective, if be effectively if jump to step 5；
Step 5：If there is any brake signal state to be all the way changed into invalid, step 6 is jumped to；
Step 6：Synthetic determination brake signal state whether be it is invalid, if be it is invalid if think braking requirement cancel, recover
Driving states.
2. brake signal processing method according to claim 1, it is characterised in that in step 4, if braking letter per road
Number state is not effective, then performs following steps：
Step 41：By invalid brake signal state and its acquisition mode, the condition and transmission rate of signal transmission are combined, point
Whether Xi Gai roads brake signal state has the possibility of transmission delay；
Step 42：Judge whether invalid brake signal state causes as signal transmission delay, if, then it is assumed that brake signal school
Test uniformity to pass through, jump to step 5.
3. brake signal processing method according to claim 2, it is characterised in that in step 42, if invalid system
Dynamic signal condition is not that signal transmission delay causes, then it is assumed that have the failure that brake signal verification does not pass through, and the failure is former
Because keeping a record, step 5 is then jumped to.
4. brake signal processing method according to claim 1, it is characterised in that in step 6, the synthetic determination system
Whether dynamic signal condition is invalid comprise the following steps：
Step 61：By each road brake signal state, the condition and transmission rate transmitted with reference to its acquisition mode, signal, analysis is each
Whether brake signal state has the possibility of transmission delay, if so, then taking respective threshold to analyze the brake signal for having transmission delay
Whether the corresponding braking requirement of state disappears；
Step 62：Disappeared if all of braking requirement, then it is assumed that brake signal state is invalid, if all of braking
Demand disappears without whole, then repeat step 61.
5. brake signal processing method according to claim 1, it is characterised in that the step 2 and the step 3 it
Between also include：Decide whether to integrate any road brake signal state in brake signal state described in multichannel according to demand
Judge.
6. the brake signal processing method according to any one of claim 1-5, it is characterised in that the brake signal class
Type includes brake pedal switch amount signal, brake pedal analog signalses, brake-pipe pressure signal.
7. the brake signal processing method according to claim 2 or 4, it is characterised in that the condition bag of the signal transmission
Include transmission condition, signal update cycle.
8. the brake signal processing method according to claim 2 or 4, it is characterised in that the signal transmission rate includes
Network transmission rate in itself, message update cycle, controller execution cycle.
9. brake signal processing method according to claim 1, it is characterised in that the controller includes vehicle body stability series
System, anti-lock braking system, without key activation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391587.7A CN107264288B (en) | 2017-05-27 | 2017-05-27 | The brake signal processing method of pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391587.7A CN107264288B (en) | 2017-05-27 | 2017-05-27 | The brake signal processing method of pure electric automobile |
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| Publication Number | Publication Date |
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| CN107264288A true CN107264288A (en) | 2017-10-20 |
| CN107264288B CN107264288B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710391587.7A Active CN107264288B (en) | 2017-05-27 | 2017-05-27 | The brake signal processing method of pure electric automobile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100036559A1 (en) * | 2006-11-30 | 2010-02-11 | Masaki Shibasaki | Brake-switch failure diagnosis method and brake-switch failure diagnosis system |
| CN102490717A (en) * | 2011-12-20 | 2012-06-13 | 奇瑞汽车股份有限公司 | Brake switch control system for electric automobile, and control method and fault diagnosis method for brake switch control system |
| CN103507795A (en) * | 2012-06-29 | 2014-01-15 | 比亚迪股份有限公司 | Brake pedal control method, control device and electric vehicle with control device |
| CN106274550A (en) * | 2016-08-08 | 2017-01-04 | 郑州宇通客车股份有限公司 | A kind of pure electric vehicle safe driving control method |
-
2017
- 2017-05-27 CN CN201710391587.7A patent/CN107264288B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100036559A1 (en) * | 2006-11-30 | 2010-02-11 | Masaki Shibasaki | Brake-switch failure diagnosis method and brake-switch failure diagnosis system |
| CN102490717A (en) * | 2011-12-20 | 2012-06-13 | 奇瑞汽车股份有限公司 | Brake switch control system for electric automobile, and control method and fault diagnosis method for brake switch control system |
| CN103507795A (en) * | 2012-06-29 | 2014-01-15 | 比亚迪股份有限公司 | Brake pedal control method, control device and electric vehicle with control device |
| CN106274550A (en) * | 2016-08-08 | 2017-01-04 | 郑州宇通客车股份有限公司 | A kind of pure electric vehicle safe driving control method |
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| CN107264288B (en) | 2019-10-18 |
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