CN107264288B - 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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- CN107264288B CN107264288B CN201710391587.7A CN201710391587A CN107264288B CN 107264288 B CN107264288 B CN 107264288B CN 201710391587 A CN201710391587 A CN 201710391587A CN 107264288 B CN107264288 B CN 107264288B
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- brake signal
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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 fields of pure electric automobile, disclose a kind of brake signal processing method of pure electric automobile comprising: step 1: multiple controllers acquire current brake signal state respectively, and brake signal state is sent to bus respectively；Step 2: whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；Step 3: executing braking strategy；Step 4: the every road brake signal state of comprehensive judgement whether be effectively, if be effectively if go to step 5；Step 5: if there is any brake signal state all the way to become in vain, going to step 6；Step 6: comprehensive judgement brake signal state whether be it is invalid, if be it is invalid if think that braking requirement is cancelled, restore driving states.This method can be accurately determined the braking requirement state of driver, to improve the safety of pure electric automobile.
Description
Technical field
The present invention relates to the thermoacoustic prime engine fields of pure electric automobile, and in particular at a kind of brake signal of pure electric automobile
Reason method.
Background technique
Traditional brake system structure pattern mainly has mechanical, pneumatic type, fluid pressure type, gas-liquid mixed.They
Working principle is all using brake apparatus, the frictional heat generated when with work is had to gradually use up vehicle substantially all
Kinetic energy, with reach vehicle braking deceleration, or until parking purpose.It is opened along with energy conservation and the research of clean energy vehicle
Hair, automobile dynamic system have occurred very big change, many new structural shapes and functional form occur.Novel power system
Appearance also require brake system structure pattern and functional form that corresponding change occurs.
Pure electric automobile can be participated in braking process due to its special structure, reduce mechanical demand braking force,
Improve the security performance of vehicle.The brake pedal signal arrangement and mode of current pure electric automobile relate generally to: on-off model,
Analog signals, switch+analog signals mode, and reduce brake signal in such a way that variable connector acquires respectively
The risk of failure.Therefore when deviation occur in multiple signals, need to make accurate judgement, to determine the request of current driver's
State.
Summary of the invention
(1) technical problems to be solved
It is an object of the present invention to provide a kind of brake signal processing methods of pure electric automobile, it is intended to accurately determine
The braking requirement state of driver, to improve the safety of pure electric automobile.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of brake signal processing method of pure electric automobile,
The following steps are included:
Step 1: multiple controllers acquire current brake signal state respectively, and respectively send out the brake signal state
It send to bus；
Step 2: whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；
Step 3: executing braking strategy；
Step 4: the every road brake signal state of comprehensive judgement whether be effectively, if be effectively if go to step 5；
Step 5: if there is any brake signal state all the way to become in vain, going to step 6；
Step 6: comprehensive judgement brake signal state whether be it is invalid, if be it is invalid if think that braking requirement is cancelled,
Restore driving states.
Wherein, in step 4, if every road brake signal state is not effectively, to execute following steps:
Step 41: the condition of invalid brake signal state and its acquisition mode, signal transmission is mutually tied with transmission rate
It closes, analyzes the possibility whether the road brake signal state has transmission delay；
Step 42: determining whether invalid brake signal state is that signal transmission delay causes, if so, thinking braking letter
Number verification consistency passes through, and gos to step 5.
Wherein, in step 42, if invalid brake signal state is not that signal transmission delay causes, then it is assumed that there is system
The dynamic unacceptable failure of signal checking, and the failure cause is kept a record, then gos to step 5.
Wherein, in step 6, the comprehensive judgement brake signal state whether be it is invalid the following steps are included:
Step 61: each road brake signal state is divided in conjunction with condition and transmission rate that its acquisition mode, signal transmit
The possibility whether each brake signal state has transmission delay is analysed, if so, respective threshold is then taken to analyze the braking for having transmission delay
Whether the corresponding braking requirement of signal condition disappears；
Step 62: if all braking requirements disappear, then it is assumed that brake signal state is in vain, if all
Braking requirement is without all disappearing, then repeatedly step 61.
Wherein, between the step 2 and the step 3 further include: decide whether the braking described in multichannel according to demand
Any road brake signal state in signal condition carries out comprehensive judgement.
Wherein, the brake signal type includes brake pedal switch amount signal, brake pedal analog signals, brake pipe
Road pressure signal, brake piping air pressure signal.
Wherein, the condition of the signal transmission includes transmission condition, signal update period.
Wherein, the signal transmission rate includes the transmission rate of network itself, message update cycle, controller operation week
Phase.
Wherein, the controller includes body stabilization system, anti-lock braking system, without key activation system.
(3) beneficial effect
The brake signal processing method of pure electric automobile provided by the invention, passes through entire car controller, ABS/ESC, PEPS
Equal controllers acquire current brake signal state respectively, and are sent to bus, and the entire car controller is according to the above braking letter
Number state considers signal acquisition mode, the condition of transmission, transmission rate, the validity of comprehensive judgement brake signal, according to described
Determine as a result, executing corresponding braking strategy.This method can be accurately determined the braking requirement state of driver, pure to improve
The safety of electric car.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the braking system in the embodiment of the present invention；
Fig. 2 is the flow chart of the brake signal processing method in the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Herein, term " basic " covers the value in " ± 10% " range of represented value；Term " on ", "lower" are not
It is intended to limit specific orientation, but for being illustrated in conjunction with attached drawing.
Fig. 1 shows an a kind of preferred embodiment of the brake signal processing method of pure electric automobile according to the present invention.
As shown, the brake signal processing method includes:
Step 1: multiple controllers acquire current brake signal state respectively, and are respectively sent to brake signal state
Bus；Wherein, brake signal type may include brake pedal switch amount signal, brake pedal analog signals.
Step 2: whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；Specifically,
Entire car controller whether get effective brake signal condition include entire car controller whether from bus receive effective brake signal
Whether state and entire car controller directly acquire 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 acquire brake pedal all thinks
It is that full-vehicle control controller gets effective brake signal condition.
Step 3: executing braking strategy；
Step 4: whether the every road brake signal state of comprehensive judgement is effectively, if being effectively, to go to step 5；
Wherein, the comprehensive judgement includes that the judgement of individual signals state validity, signal checking and inspection result are reminded.
Step 5: if there is any brake signal state all the way to become in vain, going to step 6；
Step 6: comprehensive judgement brake signal state whether be it is invalid, if be it is invalid if think that braking requirement is cancelled,
Restore driving states.
Preferably, in step 4, if every road brake signal state is not effectively, to execute following steps:
Step 41: the condition of invalid brake signal state and its acquisition mode, signal transmission is mutually tied with transmission rate
It closes, analyzes the possibility whether the road brake signal state has transmission delay；Specifically, the condition of signal transmission includes sending item
Part, signal update period.Transmission rate includes the transmission rate of network itself, message update cycle, controller execution cycle.
Step 42: determining whether invalid brake signal state is that signal transmission delay causes, if so, thinking braking letter
Number verification consistency passes through, and gos to step 5；Preferably, in step 42, if invalid brake signal state is not signal
Transmission delay causes, then it is assumed that has brake signal to verify unacceptable failure, and the failure cause is kept a record, then jump to
Step 4.
Preferably, in step 6, the comprehensive judgement brake signal whether be it is invalid the following steps are included:
Step 61: by each road brake signal, in conjunction with condition and transmission rate that its acquisition mode, signal transmit, analysis is each
Whether brake signal has the possibility of transmission delay, if so, respective threshold is then taken to analyze the brake signal state for having transmission delay
Whether corresponding braking requirement disappears；
Step 62: if all braking requirements disappear, then it is assumed that brake signal state is in vain, if all
Braking requirement is without all disappearing, then repeatedly step 61.
Preferably, between step 2 and the step 3 further include: decide whether to brake letter described in multichannel according to demand
Any road brake signal state in number state carries out comprehensive judgement.
Preferably, multiple control implement bodies may include body stabilization system (ESC), anti-lock braking system (ABS), open without key
Dynamic system (PEPS) etc. has the control unit of braking signal collection.Multiple controllers acquire current brake signal shape respectively
State, and brake signal state is sent to bus respectively；Entire car controller acquires brake signal state from bus, and according to described
Brake signal state, the validity of comprehensive judgement brake signal, and entire car controller (VCU) is sent to bus according to judgement result
Brake signal state determines recovery driving states.
In conclusion the brake signal processing method of pure electric automobile provided by the invention, passes through entire car controller, ABS/
The controllers such as ESC, PEPS acquire current brake signal state respectively, and are sent to bus, the entire car controller according to
Upper brake signal state, consideration signal acquisition mode, the condition of transmission, transmission rate, the validity of comprehensive judgement brake signal,
According to the judgement as a result, executing corresponding braking strategy.This method can be accurately determined the braking requirement state of driver,
To improve the safety 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 in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of brake signal processing method of pure electric automobile, which is characterized in that the brake signal processing method include with
Lower step:
Step 1: multiple controllers acquire current brake signal state respectively, and are respectively sent to the brake signal state
Bus；
Step 2: whether entire car controller gets effective brake signal condition；If it is, being transferred to step 3；
Step 3: executing braking strategy；
Step 4: the every road brake signal state of comprehensive judgement whether be effectively, if be effectively if go to step 5, if often
Road brake signal state is not effectively, then to execute 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 the road Xi Gai brake signal state has the possibility of transmission delay；
Step 42: determining whether invalid brake signal state is that signal transmission delay causes, if so, thinking brake signal school
It tests consistency to pass through, gos to step 5；
Step 5: if there is any brake signal state all the way to become in vain, going to step 6；
Step 6: comprehensive judgement brake signal state whether be it is invalid, if be it is invalid if think that braking requirement is cancelled, restore
Driving states.
2. brake signal processing method according to claim 1, which is characterized in that in step 42, if invalid system
Dynamic signal condition is not that signal transmission delay causes, then it is assumed that has brake signal to verify unacceptable failure, and the failure is former
Because keeping a record, 5 are then gone to step.
3. brake signal processing method according to claim 1, which is characterized in that in step 6, the comprehensive judgement system
Dynamic signal condition whether be it is invalid the following steps are included:
Step 61: by each road brake signal state, in conjunction with condition and transmission rate that its acquisition mode, signal transmit, analysis is each
Whether brake signal state has the possibility of transmission delay, if so, respective threshold is then taken to analyze the brake signal for having transmission delay
Whether the corresponding braking requirement of state disappears；
Step 62: if all braking requirements disappear, then it is assumed that brake signal state is in vain, if all brakings
Demand is without all disappearing, then repeatedly step 61.
4. brake signal processing method according to claim 1, which is characterized in that the step 2 and the step 3 it
Between further include: decide whether that any road brake signal state in the brake signal state described in multichannel is sentenced according to demand
It is fixed.
5. brake signal processing method described in any one of -4 according to claim 1, which is characterized in that the brake signal class
Type includes brake pedal switch amount signal, brake pedal analog signals, brake-pipe pressure signal.
6. brake signal processing method according to claim 1 or 3, which is characterized in that the condition packet of the signal transmission
Include transmission condition, signal update period.
7. brake signal processing method according to claim 1 or 3, which is characterized in that the signal transmission rate includes
The transmission rate of network itself, message update cycle, controller execution cycle.
8. brake signal processing method according to claim 1, which is characterized 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107264288A CN107264288A (en) | 2017-10-20 |
| CN107264288B true CN107264288B (en) | 2019-10-18 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4955374B2 (en) * | 2006-11-30 | 2012-06-20 | ボッシュ株式会社 | Brake switch failure diagnosis method and brake switch failure diagnosis device |
| CN102490717B (en) * | 2011-12-20 | 2014-03-12 | 奇瑞汽车股份有限公司 | Control method for electromobile brake switch control system |
| CN103507795B (en) * | 2012-06-29 | 2016-01-13 | 比亚迪股份有限公司 | Brake pedal control method, control setup and there is the electronlmobil of this device |
| CN106274550B (en) * | 2016-08-08 | 2018-12-14 | 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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