CN209126710U - Electronic parking system - Google Patents
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- CN209126710U CN209126710U CN201821728823.6U CN201821728823U CN209126710U CN 209126710 U CN209126710 U CN 209126710U CN 201821728823 U CN201821728823 U CN 201821728823U CN 209126710 U CN209126710 U CN 209126710U
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- electronic parking
- automatic pilot
- vehicle
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Abstract
The utility model provides a kind of electronic parking system comprising: controller is inside integrated with the electronic parking control unit and automatic Pilot control unit of autonomous working；Two electric parking brakes are separately positioned on two front-wheels of vehicle；Four wheel speed sensors are respectively placed on two front-wheels and two rear-wheels of vehicle；Electronic parking control unit is connected by connection with electronic parking switch, the electric parking brake and the wheel speed sensors；The automatic Pilot control unit is connected with radar controller, the camera controller signal on vehicle；In automatic driving mode, the work of automatic Pilot control unit, electronic parking control unit, electric parking brake and wheel speed sensors are used as redundancy backup braking system.The utility model makes electronic parking control system have the requirement of automatic Pilot redundancy braking backup completely, it can be achieved that the redundancy under automatic driving mode is braked.
Description
Technical field
The utility model relates to a kind of automatic driving technical fields, more particularly to a kind of electronic parking system.
Background technique
Electronic parking EPB (Electrical Parking Brake) is the skill that parking braking is realized by electronic control
Art.In the use of current orthodox car, electronic parking system mainly uses two kinds of structure types: drag-line electronic parking and card
Clamp integrated type electrical parking.The electronic parking system of two kinds of structure type, by realizing parking to rear-wheel independent brake.Electronics
Parking is only worked in parking, and service brake is not actively engaged in.
Electronic parking simplifies the operation of driver instead of traditional mechanical parking brake, and the cloth for saving console empties
Between, while there is many advantages, such as automatic release dynamics pull-up and additional function, the use popularity rate in traditional vehicle is more next
Higher, future will occupy most shares.
Automatic driving technology is developed so far the history of existing many decades.It is showed at the beginning of 21 century close to functionization
Trend.Automatic Pilot is exactly to pass through vehicle-mounted sensor-based system perception road environment, and automatic planning travelling line simultaneously controls vehicle arrival
Predeterminated target.Automatic Pilot also proposed new requirement to traditional braking system, and braking system must simultaneously have two sets not
With braking component realize active brake function.First set main brake part must can satisfy service brake response efficiency and
The requirement of reliability.Second set of redundancy backup braking component can carry out rapidly actively row after the failure of first set active parts
Vehicle braking.To reach the requirement of the minimum deceleration of laws and regulations requirement simultaneously.
The automatic Pilot braking system scheme of mainstream at present mainly replaces traditional vacuum to help using electro-hydraulic brake system
Power device realizes the function of first set main brake.Electro-hydraulic brake system is driven by brushless motor, according to the control of ECU, to realize system
Dynamic function.When needing active brake, only needs ECU to issue brake signal to brushless motor, required braking deceleration can be realized.
Second set of redundancy backup braking generallys use independent electronic stability control ESC (Electronic Stability Control)
It realizes.When first set main brake fails, the motor in ESC can realize backup braking to the clamp pressurization at 4 wheel ends.
In automatic Pilot, realize that the ESC technology of redundancy backup braking by supplier's monopolies such as BoschZFCont i, becomes certainly
The bottleneck of main research and development automatic Pilot.
Therefore, it is necessary to a kind of electronic parking systems for meeting automatic Pilot requirement and redundancy backup braking can be achieved.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of electronic parking system,
For solving the problems, such as that automatic Pilot parking system complexity can not integrated redundancy braking backup in the prior art.
In order to achieve the above objects and other related objects, the utility model provides a kind of electronic parking system comprising:
Controller, the electronic parking control unit and automatic Pilot control unit, electronics for being inside integrated with autonomous working are stayed
It is connected between vehicle control unit and automatic Pilot control unit by intermediate interactive unit；
Two electric parking brakes are separately positioned on two front-wheels of vehicle；
Four wheel speed sensors are respectively placed on two front-wheels and two rear-wheels of vehicle；
The electronic parking control unit by connection with electronic parking switch, the electric parking brake and institute
Wheel speed sensors are stated to be connected；The automatic Pilot control unit and the radar controller on vehicle, camera controller signal phase
Even；
In automatic driving mode, the work of automatic Pilot control unit, electronic parking control unit, electric parking brake
It is used with wheel speed sensors as redundancy backup braking system.
Preferably, there are two independent processing chip, each processing chip is equipped with the electronic parking control unit tool
Bottom module and application layer module.
Preferably, there are two independent processing chip, each processing chip is equipped with the automatic Pilot control unit tool
Bottom module and application layer module.
As described above, the electronic parking system of the utility model, has the advantages that and uses electronic brake
Device is installed makes it can provide bigger braking moment to the front-wheel of vehicle, reaches enough systems needed for automatic Pilot redundancy backup
Power；It is integrated with automatic Pilot control unit and electronic parking control unit in controller, reduces the controller number on vehicle
Amount, improves the flexibility of arrangement；Receive four wheel speed sensors signals in controller simultaneously, it is ensured that superfluous in automatic Pilot
When remaining backup, the stability of vehicle is taken into account, is accomplished safe and reliable.The utility model has electronic parking control system completely
The requirement of automatic Pilot redundancy braking backup is, it can be achieved that the redundancy under automatic driving mode is braked.
Detailed description of the invention
Fig. 1 is shown as the electronic parking system schematic of the utility model.
Fig. 2 is shown as the controller block diagram of the utility model.
Component label instructions
1 front-wheel
2 rear-wheels
3 controllers
31 electronic parking control units
311 bottom modules
312 application layer modules
32 automatic Pilot control units
321 application layer modules
322 bottom modules
33 intermediate interactive units
4 wheel speed sensors
5 vehicle power supplys
6 electronic parkings switch
7 electric parking brakes
8 entire car controllers
9 gearbox controllers
10 engine controllers
11 gear controllers
12 electronic stability controls
13 radar controllers
14 camera controllers
15 ignition switches
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Fig. 1 is please referred to Fig. 2.It should be clear that structure, ratio, size etc. depicted in this specification institute attached drawing, only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, is not intended to limit the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
In the range of revealed technology contents can be covered.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
As shown in Figure 1, the utility model provides a kind of electronic parking system comprising:
Controller 3 is inside integrated with the electronic parking control unit 31 and automatic Pilot control unit 32 of autonomous working, sees
Shown in Fig. 2, it is connected between electronic parking control unit 31 and automatic Pilot control unit 32 by intermediate interactive unit 33；
Two electric parking brakes 7 are separately positioned on two front-wheels 1 of vehicle；Electronic parking system in the present embodiment
Dynamic device is clamp integrated form brake；
The wheel speed sensors 4 of four detection faster rotating wheels, are respectively placed in two front-wheels 1 and two rear-wheels 2 of vehicle
On；
The electronic parking control unit 31 by connection and electronic parking switch 6, the electric parking brake 7 and
The wheel speed sensors 4 are connected；The automatic Pilot control unit 32 is controlled with radar controller 13, the camera on vehicle
14 signal of device is connected；
In automatic driving mode, automatic Pilot control unit 32 works, electronic parking control unit 31, electronic parking system
Dynamic device 7 and wheel speed sensors 4 are used as redundancy backup braking system.
Electric parking brake 7 is mounted on front-wheel by the utility model, can provide 1.5 times or more of braking relative to rear-wheel
Power can make electric parking brake 7 be used as a reliable automatic Pilot redundancy backup braking component, provide safe and reliable
Redundancy braking ability.The utility model can realize traditional parking braking, only need the input operation of driver's electron parking switch 6
Signal, by comprehensive descision, the electric parking brake on front-wheel issues braking and executes signal controller 3, stays to generate
Vehicle braking moment.When entering automatic driving mode, once there is first set main brake disabler, automatic Pilot control unit
32 can issue redundancy brake request, electronic parking system of the electronic parking control unit on front-wheel to electronic parking control unit 31
Dynamic device issues required braking force, realizes redundancy braking；The utility model controls automatic Pilot control unit 32 and electronic parking
Unit 31 is integrated in formation above controller 3 in the same ECU, when appearance failure backup needs, saves CAN signal interaction
Delay, can with quick response, improve security performance.
Preferably to integrate above controller 3, controller 3 is that multicore controls chip in the present embodiment, with vehicle power supply 5
It is connected, is powered by vehicle power supply 5.Electronic parking control unit 31 and automatic Pilot control unit 32 are integrated into controller 3, directly
It connects and saves independent auto-pilot controller module in orthodox car, can realize automatic Pilot control independently of each other simultaneously
Backup functionality is braked in loss of redundancy when electronic brake and automatic Pilot；When improving the security level and response of signal interaction
Between.
Controller 3 is four nuclear control chips in the present embodiment, and as shown in Figure 2, wherein electronic parking control unit 31 has
Two independent processing chips, each processing chip are equipped with bottom module 312 and application layer module 311；Automatic Pilot control
For the tool of unit 32 there are two independent processing chip, each processing chip is equipped with bottom module 322 and application layer module 321.Electricity
Sub- parking control unit 31 and automatic Pilot control unit 32 are mutually encapsulated into control assembly, base between two control units
Work independently in respective processing chip, by intermediate interactive unit 33 carry out signal interaction, by Bootloader into
Row software writes with a brush dipped in Chinese ink update.The failure of any one of two control units, will not influence the work of another control unit.Automatically it drives
After sailing the failure of control unit 32, electronic parking control unit 31 can be intervened as redundancy backup.
Above controller 3 by high-speed CAN bus not only with entire car controller 8, gearbox controller 9, gear controller
11, engine controller 10, ignition switch 15 and electronic stability control 12 carry out signal interaction, it is also necessary to automatic Pilot
Relevant radar controller 13 and camera controller 14 carry out CAN signal interaction, to support automatic Pilot control unit 32
The Function for Automatic Pilot of automatic driving control system is realized in control decision.
The utility model provides a kind of electronic parking redundancy brake control method, the electronic parking redundancy brake control method
Using electronic parking system as described above, operated when driver switchs to input to electronic parking control unit by electronic parking
Signal, the electronic parking control unit issue braking to the electric parking brake after judging and execute signal, realize just
Normal parking braking；When entering automatic driving mode, the automatic Pilot control unit work, when the main brake function of vehicle is lost
When effect or automatic Pilot control unit fail, the automatic Pilot control unit is controlled by intermediate interactive unit to electronic parking
Unit issues redundancy brake request, and electronic parking control unit exports redundancy required braking force to the electric parking brake,
Realize redundancy braking.
Traditional electronic parking system is only acted in parking, is expanded to the redundancy backup of automatic Pilot brake with
Afterwards, above controller 3 receives 4 signal of wheel speed sensors on four wheels simultaneously, judges the slip rate of wheel.Work as automatic Pilot
When failing occurs in first set main brake or automatic Pilot control unit fails, electronic parking control unit can take over drives automatically
Control system is sailed, is intervened electronic brake system as redundancy backup.Electronic parking control unit 31 based on the received four
The data that a wheel speed sensors 4 are passed export redundancy system to the electric parking brake 7 to calculate wheel slip rate
The size of power.
Control for brake can be carried out according to the slip rate of front-wheel in braking process, prevent wheel lock up, realize that safety can
The braking redundancy backup leaned on.When as redundancy backup braking system, the electronic parking control unit monitors that front-wheel occurs
When locking, then output order requires the electric parking brake to carry out simulation abs braking operation, by reducing release braking
Power, it is ensured that vehicle directional stability.
In conclusion the electronic parking system and electronic parking redundancy brake control method of the utility model, using will be electric
Sub- parking brake is installed makes it can provide bigger braking moment to the front-wheel of vehicle, reaches automatic Pilot redundancy backup institute
The enough brake force needed；It is integrated with automatic Pilot control unit and electronic parking control unit in controller, reduces on vehicle
Amount controller, improve the flexibility of arrangement；Receive four wheel speed sensors signals in controller simultaneously, it is ensured that
When automatic Pilot redundancy backup, the stability of vehicle is taken into account, is accomplished safe and reliable.The utility model makes electronic parking control system
Has the requirement of automatic Pilot redundancy braking backup completely, it can be achieved that the redundancy under automatic driving mode is braked.So this reality
It is effectively overcome various shortcoming in the prior art with novel and is had high industrial utilization value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (3)
1. a kind of electronic parking system characterized by comprising
Controller is inside integrated with the electronic parking control unit and automatic Pilot control unit of autonomous working, electronic parking control
It is connected between unit processed and automatic Pilot control unit by intermediate interactive unit；
Two electric parking brakes are separately positioned on two front-wheels of vehicle；
Four wheel speed sensors are respectively placed on two front-wheels and two rear-wheels of vehicle；
The electronic parking control unit passes through connection and electronic parking switch, the electric parking brake and the wheel speed
Sensor is connected；The automatic Pilot control unit is connected with radar controller, the camera controller signal on vehicle；
In automatic driving mode, the work of automatic Pilot control unit, electronic parking control unit, electric parking brake and wheel
Fast sensor is used as redundancy backup braking system.
2. electronic parking system according to claim 1, it is characterised in that: there are two the electronic parking control unit tools
Independent processing chip, each processing chip are equipped with bottom module and application layer module.
3. electronic parking system according to claim 1, it is characterised in that: there are two the automatic Pilot control unit tools
Independent processing chip, each processing chip are equipped with bottom module and application layer module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821728823.6U CN209126710U (en) | 2018-10-24 | 2018-10-24 | Electronic parking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821728823.6U CN209126710U (en) | 2018-10-24 | 2018-10-24 | Electronic parking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209126710U true CN209126710U (en) | 2019-07-19 |
Family
ID=67232507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821728823.6U Active CN209126710U (en) | 2018-10-24 | 2018-10-24 | Electronic parking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209126710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229081A (en) * | 2018-10-24 | 2019-01-18 | 苏州齐思智行汽车***有限公司 | Electronic parking system and electronic parking redundancy brake control method |
-
2018
- 2018-10-24 CN CN201821728823.6U patent/CN209126710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229081A (en) * | 2018-10-24 | 2019-01-18 | 苏州齐思智行汽车***有限公司 | Electronic parking system and electronic parking redundancy brake control method |
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