CN201800701U - Electronic brake system based on FlexRay bus - Google Patents
Electronic brake system based on FlexRay bus Download PDFInfo
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- CN201800701U CN201800701U CN2010202997360U CN201020299736U CN201800701U CN 201800701 U CN201800701 U CN 201800701U CN 2010202997360 U CN2010202997360 U CN 2010202997360U CN 201020299736 U CN201020299736 U CN 201020299736U CN 201800701 U CN201800701 U CN 201800701U
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- braking
- main control
- brake
- flexray bus
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Abstract
The utility model discloses an electronic brake system and aims to provide the electronic brake system based on a FlexRay bus, which has simple structure, short braking response time and high safety and reliability without pipeline leakage. The electronic brake system based on the FlexRay bus comprises a sensor part, a main control unit, an electronic control brake module and an executive system. The sensor part is connected with the main control unit which is connected with the electronic control brake module through the FlexRay bus, and the executive system is arranged on a wheel. The sensor part transmits relevant signals to the main control unit which transmits a brake instruct to the electronic control brake module through the FlexRay bus so as to control the executive system for braking. By adopting the FlexRay bus to transmit the brake instruct, some complicated components in a traditional brake system are omitted, the electronic brake system provided by the utility model has simple structure and short braking response time, is beneficial to environmental protection and maintenance, and improves the brake performance and the safety of vehicles. The utility model is applicable to all motor-driven vehicles.
Description
Technical field
The utility model relates to a kind of new automobile brake system, especially relates to a kind of electric brake system based on the FlexRay bus.
Background technology
[0002] FlexRay is a communication standard for vehicular applications system upper layer network and line control system exploitation, is a kind of communication system flexibly, can satisfy following advanced automobile high-speed control demands of applications.Its most outstanding characteristic is under the condition that improves data transmission rate, can satisfy the reliability index of automotive safety requirement, as higher communication bandwidth, certainty and powerful fault-tolerance data-transformation facility.Will be widely used in systems such as vehicle-mounted core network and line control system from now on, it can effectively manage maltilevel security and comfortable function.Compare with the LIN bus with the CAN bus, the FlexRay bus has faster data transmission speed and bus load rate; More fully topology is selected and the fault-tolerance design; Communication mechanism (Time Triggered and Event triggered) more flexibly.It can support various topologys, and as bus, star-like and mixed topology, the designer can come configuring distributed system by the type topology in conjunction with two or more, to satisfy the demand of various system communications in the vehicle.
Vehicle electronicsization is the inexorable trend of current automotive technology development.After the sub-technology of relay was used widely in systems such as driving engine, change-speed box, brake system of car should have development at full speed.Traditional brake system of car is by control system (brake pedal, parking brake) 1; 2, hydraulic efficiency pressure system (hydraulic oil, master cylinder, hydraulic oil pipe, wheel cylinder); 3, force aid system (vacuum booster pump); 4, electronic control system (abs pump, abs sensor, ABS ECU (Electrical Control Unit)); 5, actuating system (braking clamp, brake facing, brake disc) is formed.
State Intellectual Property Office of the People's Republic of China discloses the Granted publication number patent documentation for [CN2915613Y] on June 27th, 2007, title is a brake system of car, structure is as follows: air compressor connects air tank, air storage socket joint brake control valve and relay valve connect valve again, add air tank by check valve air extractor duct attachment, connect the relay valve admission port by back axle braking air extractor duct, connect valve trailing wheel admission port again, the relay valve air extractor duct connects trailing wheel main gas tank admission port, and valve air gate connects the trailing wheel accessory air-space; Air storage socket joint brake control valve propons admission port, brake control valve propons braking air extractor duct connects the front-wheel air chamber, and admission port connects front-wheel relay piston chamber inlet channel again; Pressure regulating valve is connected with air tank, connects air-pressure gauge on air tank, and stop lamp switch is housed on gas-tpe fitting, the single air chamber of back braking originally changes two air chambers into, increase additional air tank, improve servo automatic parking brake control brake valve and relay valve, be applicable to oil pressure and air pressure automobile.This scheme is to connect by oil circuit or gas circuit between pedal and brake activation valve, need parts such as braking fuel tank, master brake cylinder, work-saving device, hydraulic valve, complex structure, and the braking response time is long, also may be because hydraulic tubing leaks the situation that brake failure takes place.
Summary of the invention
The utility model mainly is to solve the existing existing machinery of brake system of car, hydraulic structure complexity, the braking response time is long, the technical matters that hydraulic tubing may leak has proposed the electric brake system based on the FlexRay bus of short, high safety reliability of a kind of simple in structure, braking response time.
The utility model proposes following technical proposals at above-mentioned technical matters and solves: a kind of electric brake system based on the FlexRay bus, comprise Sensor section, main control unit, electric control braking module and actuating system, Sensor section is connected with main control unit, the total wire joint of the FlexRay of main control unit and automobile, the total wire joint of the FlexRay of electric control braking module and automobile, the electric control braking module is installed on the chassis suspension of automobile, actuating system is connected with the electric control braking module, and actuating system is installed on the wheel.Sensor section passes to main control unit with speed-slackening signal, main control unit transmits braking instruction by the FlexRay bus and gives the electric control braking module, electric control braking module controls actuating system carries out brake operating, and corresponding braking effect feedback signal is returned to main control unit by the FlexRay bus.Adopt the FlexRay bus to transmit speed-slackening signal and saved complicated parts such as braking fuel tank in the traditional braking system, master brake cylinder, work-saving device, hydraulic valve, pipeline system, make physical construction become very simple (only surplus brake pedal and integrated electric clamp part), brakeless liquid is beneficial to environmental protection, is convenient to safeguard.Simultaneously also avoid the generation of hydraulic tubing incident of leakage, and caused the accident that causes because of brake failure.The communication speed of FlexRay bus can reach 10Mb/s, and the braking response time is far smaller than traditional braking response time, has improved deceleration and stopping performance and safety greatly.The electric brake system based on the FlexRay bus that the utility model proposes can adopt modular construction, makes manufacturing, assembling simple and fast.And can carry out integration processing to many-sided information on the vehicle bus network, as the foundation of selecting better braking scheme, and then each is taken turns brakig force distribution, integrated the ABS(anti-skid brake system), VSC(vehicle stabilization control system) etc. the function of system.
As preferably, Sensor section comprises pedal pressing force sensor, radar and pedal stroke sensor, and pedal pressing force sensor, radar, pedal stroke sensor are connected with main control unit respectively.The pedal pressing force sensor is used to detect the pressure of chaufeur pedal, and pedal stroke sensor is used to detect pedal stroke, and radar is used to detect the distance of the place ahead obstacle and automobile.
As preferably, main control unit as the node of network carry in the CAN network, receive each road signal such as rotating speed, wheel speed, steering wheel angle, distribution of weight signal, passenger's positioning signal, tire pressure deviation signal, condition of road surface signal, thereby best braking instruction is provided.
As preferably, main control unit also is connected with the braking during standstill button.The braking during standstill button has replaced the hand braking during standstill bar in traditional brake system, and is simple in structure, is convenient to operation.
As preferably, the electric control braking module comprises electronic control unit and braking driver element, the total wire joint of electronic control unit and FlexRay, and the braking driver element is connected with electronic control unit, the braking driver element is connected with actuating system, and actuating system is the integrated electric clamp.
The beneficial effect that the utility model brings is, saved the mechanical-hydraulic complex component in the traditional braking system, make physical construction become simple, environmental protection and be convenient to safeguard, the problem that does not have hydraulic tubing to leak is made assembling simply, has better deceleration and stopping performance, safety and fuel economy, integrate vehicle anti-lock brake system and vehicle stabilization control system, be easy to realize the vehicle lightweight requirements.System and need not to increase the multinomial expanded functions such as intelligent driving that more device can be realized vehicle by control policy and software upgrading the time.
Description of drawings
Fig. 1 is a kind of circuit module block diagram of the present utility model;
Fig. 2 is a kind of detail circuits module frame chart of the present utility model;
Among the figure: 1, Sensor section, 2, main control unit, 3, the electric control braking module, 4, wheel, 5, actuating system, 11, the pedal pressing force sensor, 12, radar, 13, pedal stroke sensor, 21, braking during standstill button, 31, the braking driver element, 32, electronic control unit.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of electric brake system based on the FlexRay bus as shown in Figure 1, comprises Sensor section 1, main control unit 2, electric control braking module 3 and actuating system 5.Sensor section 1 is connected with main control unit 2, and by the total wire joint of FlexRay, electric control braking module 3 is connected with actuating system 5 between main control unit 2 and the electric control braking module 3.Fig. 2 is the detailed circuit module frame chart of the technical program.Sensor section 1 comprises respectively and main control unit 2 bonded assembly pedal pressing force sensors 11, radar 12 and pedal stroke sensor 13.Braking during standstill button 21 is connected with main control unit 2.Electric control braking module 3 comprises braking driver element 31 and electronic control unit 32; Electronic control unit 32 is connected with main control unit 2 by the FlexRay bus; Braking driver element 31 is connected with electronic control unit 32, actuating system 5 respectively, can implement brake operating to actuating system 5 under the control of electronic control unit 32; The corresponding electric control braking module 3 of each wheel and an actuating system 5.Actuating system 5 is the integrated electric clamp.Main control unit 2 also is connected in the CAN network as node.
When setting up the signal matrix of FlexRay communication, the information data relevant with braking is dispensed in the FlexRay bus static section and communicates, and employing software redundancy design, identical data allocations is utilized the binary channel transmission of FlexRay bus in the different time slot (Slot), strengthened the safe reliability of system, will with vehicle under steam the relevant information data of the accident of meeting be distributed in the FlexRay bus dynamic segment and communicate.
When chaufeur carries out the drag operation, pedal stroke sensor 13 and pedal pressing force sensor 11 are found out the braking intention of chaufeur, radar 12 is found out the place ahead obstacle distance, main control unit 2 collects the percentum that calculates pedal stroke after these information, the size of pressure when pedal is stepped on, speed rate of change when pedal is stepped on, again with bus on tach signal, wheel speed signal, the wheel steering angle signal, the distribution of weight signal, passenger's positioning signal, the tire pressure deviation signal, each road signal such as condition of road surface signal compiles processing, calculate the maximum braking force of each wheel 4 according to vehicle running state, send instruction again and give electronic control unit 32, make each integrated electric clamp implement braking by electric control braking unit 32 control brake driver elements 31, the braking feedback signal that while electronic control unit 32 will collect sends to main control unit 2 by the FlexRay bus and carries out the PID closed loop control.Finally convert electric energy to mechanical energy, realize the braking intention, to guarantee best deceleration/decel and riding stability by integrated electric clamp, brake facing.
When the needs braking during standstill, braking during standstill button 21 is pressed, main control unit 2 sends parking brake signals to electric control braking module 3 after detecting braking during standstill button 21 operation signals, the machine operation of electric control braking module 3 control integrated electric clamp is implemented certain braking force by the integrated electric clamp to brake disc and is realized braking during standstill.
Under the situation that traffic congestion takes place, chaufeur only needs simple control Das Gaspedal and brake pedal to get final product.In case pin is moved away from Das Gaspedal, when promptly touching on the brake pedal, brake system can be calculated relative speed difference according to detected the place ahead obstacle distance and self speed of a motor vehicle.Automatically apply suitable braking force with steady ramp to stop according to the vehicle real-time condition.
Behind engine off, main control unit 2 receives the engine off signal by the vehicle-mounted CAN communication network, main control unit 2 sends parking brake signals and gives electric control braking module 3, the machine operation of electric control braking module 3 control integrated electric clamp is implemented certain braking force by the integrated electric clamp to brake disc and is realized braking during standstill.
When vehicle driving up is started to walk, after braking during standstill button 21 is pressed, main control unit 2 carries out computing by engine rotational speed signal, body inclination degree signal and the detected Das Gaspedal aperture signal that receives, send braking information and give electric control braking module controls integrated electric clamp, it is unclamped automatically, and vehicle sails out of automatically.
When vehicle in the process of moving, as run into turn inside diameter or ovdersteering, understeer and avoid-obstacles etc. occur when acutely operating, main control unit 2 is according to the steering wheel angle on the CAN bus network, torque signal, wag the tail signal, vehicle speed signal etc. of vehicle utilize control algorithm to carry out calculation process, respectively take turns the distribution of braking force, the point of the integrated electric clamp by total each wheel of line control of FlexRay is put, simultaneously according to the accelerator open degree signal, effectively adjust the output of engine power by EMS, be implemented in the excessive sideslip that suppresses tire when turning; When advancing, suppress the excessive double ring ahead of tire; Relaxing the excessive deceleration of tire when stopping to slide.Avoid vehicle slip or whipping out of control.
Specific embodiments described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiments, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as electronic control unit, automatically controlled driver element, pedal pressing force sensor, integrated electric clamp morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (6)
1. electric brake system based on the FlexRay bus, comprise Sensor section, main control unit, electric control braking module and actuating system, it is characterized in that, described Sensor section is connected with described main control unit, the total wire joint of the FlexRay of described main control unit and automobile, the total wire joint of FlexRay of described electric control braking module and automobile, described electric control braking module is installed on the suspension of chassis, described actuating system is connected with the electric control braking module, and described actuating system is installed on the wheel.
2. the electric brake system based on the FlexRay bus according to claim 1, it is characterized in that, described Sensor section comprises pedal pressing force sensor, radar and pedal stroke sensor, and described pedal pressing force sensor, described radar, described pedal stroke sensor are connected with described main control unit respectively.
3. the electric brake system based on the FlexRay bus according to claim 1 and 2 is characterized in that, described main control unit as the node carry in the CAN network.
4. the electric brake system based on the FlexRay bus according to claim 1 and 2 is characterized in that described main control unit also is connected with the braking during standstill button.
5. the electric brake system based on the FlexRay bus according to claim 3 is characterized in that described main control unit also is connected with the braking during standstill button.
6. the electric brake system based on the FlexRay bus according to claim 1 and 2, it is characterized in that, described electric control braking module comprises electronic control unit and braking driver element, the total wire joint of described electronic control unit and FlexRay, described braking driver element is connected with described electronic control unit, described braking driver element is connected with actuating system, and described actuating system is the integrated electric clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202997360U CN201800701U (en) | 2010-08-23 | 2010-08-23 | Electronic brake system based on FlexRay bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202997360U CN201800701U (en) | 2010-08-23 | 2010-08-23 | Electronic brake system based on FlexRay bus |
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| Publication Number | Publication Date |
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| CN201800701U true CN201800701U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202997360U Expired - Fee Related CN201800701U (en) | 2010-08-23 | 2010-08-23 | Electronic brake system based on FlexRay bus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279596A (en) * | 2011-05-21 | 2011-12-14 | 山东省科学院自动化研究所 | Remote control automobile linear control system based on FlexRay bus |
| CN107310543A (en) * | 2017-07-01 | 2017-11-03 | 南京珑瑞柯创汽车科技有限公司 | A kind of novel electromagnetic clamp motor disk brakes |
| CN111212771A (en) * | 2017-10-17 | 2020-05-29 | 威伯科有限公司 | Brake valve, compressed air brake system with brake valve, and method for manufacturing brake valve |
| CN114599558A (en) * | 2019-10-22 | 2022-06-07 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Motor vehicle braking system |
-
2010
- 2010-08-23 CN CN2010202997360U patent/CN201800701U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279596A (en) * | 2011-05-21 | 2011-12-14 | 山东省科学院自动化研究所 | Remote control automobile linear control system based on FlexRay bus |
| CN107310543A (en) * | 2017-07-01 | 2017-11-03 | 南京珑瑞柯创汽车科技有限公司 | A kind of novel electromagnetic clamp motor disk brakes |
| CN111212771A (en) * | 2017-10-17 | 2020-05-29 | 威伯科有限公司 | Brake valve, compressed air brake system with brake valve, and method for manufacturing brake valve |
| CN114599558A (en) * | 2019-10-22 | 2022-06-07 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Motor vehicle braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Taizhou City, Zhejiang Province, 317000 coastal city east gate head Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd. Address before: 317000, No. 188, Century Avenue, Linjiang Industrial Park, Xiaoshan District, Zhejiang, Hangzhou Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. Patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20170823 |