CN201193013Y - Electric-control unit of electric mechanical brake system - Google Patents
Electric-control unit of electric mechanical brake system Download PDFInfo
- Publication number
- CN201193013Y CN201193013Y CNU200820086247XU CN200820086247U CN201193013Y CN 201193013 Y CN201193013 Y CN 201193013Y CN U200820086247X U CNU200820086247X U CN U200820086247XU CN 200820086247 U CN200820086247 U CN 200820086247U CN 201193013 Y CN201193013 Y CN 201193013Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses an electric control unit of an electronic mechanical brake system, which comprises a CAN bus network, a positive control node and four passive control nodes. The positive control node receives the information that is transmitted from a brake pedal distance sensor and four wheel-velocity sensors, so that a corresponding control signal is generated to be transmitted to the CAN bus network; the passive control nodes receive the signal from the CAN bus network, and after the signal is processed, the signal is outputted to a brake motor; the brake motor drives an execution mechanism to realize the brake of the wheel. The electric control unit not only can overcome the weaknesses of the traditional hydraulic brake system that the brake pipeline is long, the valve elements are diversity, the brake is easy to be lagged, the brake distance is long, the brake liquid pollutes the environment, and the like, but also can keep high-efficient and high reliable data communication in different automobile electronic control systems; at the same time, the electric control unit can integrate the functions such as ABS, TCS, ESP and the like.
Description
Technical field
The utility model relates to mechanical type brake system electric, relates in particular to a kind of ECU (Electrical Control Unit) of the mechanical type brake system electric based on the CAN bus network communication.
Background technology
At present, nearly all brake system of car all adopts hydraulic pressure or compression air brake, and liquid or gaseous tension are sent on the wheel by master brake cylinder and a series of pipeline parts.When depressing brake pedal, pedal promotes piston in the checking cylinder by push rod, makes braking liquid generation pressure and is delivered to car side brake by pipeline.And ABS (Anti-lock Braking System, anti-skid brake system) or other brake regulation system are need brake-pressure be regulated according to each drg.
Conventional hydraulic braking remains more reliable and economic way, and still, for full size vehicle, long owing to brake piping, valve element is many, causes braking retardation easily, problems such as stopping distance is long, safety is low, braking liquid contaminated environment.The switch mode is adopted in the control of fluid pressure type ABS more, has the discountinuity of control.
Along with Eltec, the particularly development of large-scale integration circuit, the braking technology of modern automobile begins towards the development of electronic mechanical braking direction, and will progressively replace conventional control system, the intellectuality of round Realization vehicle control.
In addition, along with electronic control unit increasing on automobile is used, each system is (as engine electric-controlled system, antiblock device, automatic cruising system and in-vehicle multi-media system) and the automobile display instrument between, all need to carry out data exchange between system and the vehicle fault diagnosis system, so googol is according to exchange capacity, as still adopting the method for conventional data exchange, carrying out point-to-point bonded assembly type of transmission with lead will be complex engineering, according to statistics, if an intermediate-size car needs the wire harness plug more than 300,1800～2200 of contact pin sums, the wire harness length overall surpasses 1.5～2.0km, and assembling complexity and fault rate are very high.
Therefore, develop and a kind ofly can remedy conventional hydraulic braking shortcoming, can in a plurality of Auto Electronic Controlled System, keep the mechanical type brake system electric of high efficiency, highly reliable data communication just to seem very necessary again.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and a kind of ECU (Electrical Control Unit) of the mechanical type brake system electric based on the CAN bus network communication is provided.
The technical scheme that its technical matters of solving the utility model adopts is: a kind of electric mechanical type brake system electric control unit, and it comprises that CAN bus network, master control node and four are from Control Node; Described four link to each other with the master control node by the CAN bus respectively from Control Node.
Further, described master control node mainly is made up of master control node microcontroller, JTAG debugging interface module, clock circuit module, reset circuit module, CAN transceiver module, warning indicating module and input channel module; JTAG debugging interface module, clock circuit module, reset circuit module, CAN transceiver module, warning indicating module, input channel module link to each other with master control node microcontroller respectively.
Further, described from Control Node mainly by forming from Control Node microcontroller, JTAG debugging interface module, clock circuit module, reset circuit module, CAN transceiver module and braking motor driver module; Described JTAG debugging interface module, clock circuit module, reset circuit module, CAN transceiver module, braking motor driver module link to each other respectively with from the Control Node microcontroller.
The beneficial effect that the utlity model has is:
1. brake system as energy source, by motor-driven brake clamp piece, need not to brake liquid with electric energy in the total system, helps energy-conserving and environment-protective.
2. between brake pedal and drg, do not have mechanical connection during normal operation, replace part or all of brake piping with electric wire, and save a lot of valves of brake system, complete vehicle weight is reduced.Adopt electric wire to connect simultaneously, make braking response rapider, system durability is better, assembles simpler.
3.CAN the transmission data of bus are very fast, can reach per second transmission 32bytes valid data, can effectively guarantee the actual effect and the accuracy of data like this.Traditional car needs to bury underground a large amount of wire harness and carries out the mutual data communication of variant control system in cabin and vehicle body, and the application of CAN bussing technique can reduce the quantity of wire harness in the car body in a large number, and the minimizing of wire harness has then reduced the possibility that fault takes place.
Four from Control Node in real time independent allocation, control the braking force of each wheel, for realize anti-skid brake system ABS, anti-slip regulation TCS, electronic stability program ESP, initiatively function such as collision avoidance technology ACC provides the preparation on the hardware.
Description of drawings
Fig. 1 is the overall structure scheme drawing of mechanical type brake system electric of the present utility model;
Fig. 2 is the power module that has respectively of the master and slave Control Node of the utility model electric mechanical type brake system electric control unit and the circuit diagram of filter circuit;
Fig. 3 is the utility model electric mechanical type brake system electric control unit master control node section circuit diagram;
Fig. 4 is that the utility model electric mechanical type brake system electric control unit is from Control Node partial circuit figure;
Wherein, Fig. 2 and Fig. 3 form master control node integrated circuit jointly; Fig. 2 and Fig. 4 form jointly from the Control Node integrated circuit.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
The utility model comprises CAN bus network, master control node and four from Control Node based on CAN bus network communication electric mechanical type brake system electric control unit, and four link to each other with the master control node by the CAN bus from Control Node.
With reference to accompanying drawing 1, the whole system operation principle is as follows:
Step on brake pedal when chaufeur and carry out glancing impact, the braking intention of brake-pedal-travel sensor perception chaufeur, and be this information translation the master control node that electric signal sends to ECU (Electrical Control Unit) 101, the master control node will be gathered the signal basis of coming and be converted into control signal, and send to corresponding by the CAN bus network from Control Node, from Control Node the one's own control signal of receiving from the CAN bus is sent to braking motor, braking motor drives the braking of actuating unit enforcement to each wheel.Wheel speed sensors can be gathered each wheel wheel speed signal of automobile in real time, the master control node is monitored each wheel condition in real time, and the braking force that produces the required increase of corresponding wheel or reduce, then this information is sent to accordingly from Control Node by the CAN bus, make it finish the control of actuating unit separately being carried out the big minor adjustment of braking force.
Fig. 2 shows the power module that master and slave Control Node has respectively, and being responsible for provides required power supply to the electric mechanical type brake system electric control unit correlation module:
Wherein, figure (a) changes the 5V circuit for 12V.12V changes 5V DC/DC conversion chip U3 input end and connects automobile power source, is connected with chemical capacitor C110, zener diode D101 between its 12V leads ends and the ground end and carries out the filtering and the voltage stabilizing of input power supply are handled; Mouth is connected on the 5V of the system power lead, is connected with chemical capacitor C111 between its 5V leads ends and the ground end, carries out the Filtering Processing to out-put supply.
Figure (b) changes the 2.5V circuit for 5V.5V changes 2.5V LDO voltage stabilizer U4 input end connected system 5V power lead, is connected with capacitor C 113 between its 5V leads ends and the ground end, carries out its input power filter is handled; It is the pin of 2.5V that mouth connects the required voltage supply of master and slave Control Node microcontroller, is connected with capacitor C 114 between its pin and the ground end, carries out its out-put supply Filtering Processing.The electric capacity that adopts can be leaded multilayer ceramic capacitor or ceramic disc capacitor.
Figure (c) is a filter circuit.The 5V power supply of capacitor C 115, capacitor C 116, capacitor C 117, capacitor C 118 back parallel with one another one termination DC/DC conversion chip U3 outputs, an end ground connection; The 2.5V power supply of capacitor C 119, capacitor C 120 back in parallel one termination LDO voltage stabilizer U4 outputs, an end ground connection.The electric capacity that adopts can be leaded multilayer ceramic capacitor or ceramic disc capacitor.
Be based on CAN bus network communication electric mechanical type brake system electric control unit master control node section circuit as shown in Figure 3, comprise master control node microcontroller 301, JTAG debugging interface module 302, clock circuit module 303, reset circuit module 304, CAN transceiver module 305, warning indicating module 306, input channel module 307.JTAG debugging interface module 302, clock circuit module 303, reset circuit module 304, CAN transceiver module 305, warning indicating module 306, input channel module 307 link to each other with microcontroller 301 respectively.Master control node microcontroller 301 is responsible for gathering the signal that comes and is handled, and produces control signal; JTAG debugging interface module 302 is to carry out the interface that control program is downloaded, debugged; Clock circuit module 303 is responsible for offering CPU and the required clock signal of some other internal integrated circuit in the microcontroller chip; Reset circuit module 304 makes program begin to carry out from appointment for microcontroller chip provides the initialization means; CAN transceiver module 305 is responsible for realizing master and slave Control Node data communication on the Physical layer in the CAN bus network; Warning indicating module 306 is responsible for that systems break down or is reported to the police indication during other problem; Input channel module 307 is responsible for receiving brake-pedal-travel sensor, four signals that wheel speed sensors transmits, and carries out corresponding Filtering Processing.
Each modular circuit annexation is as follows:
JTAG debugging interface module 302:JTAG adaptor union 2 pins connect the 5V power supply, 4,6,12 pin ground connection; 3,8,10 pins directly connect 30,63,32 pins of master control node microcontroller respectively; Resistance R 107, resistance R 108, resistance R 109, resistance R 110 1 ends are intersected in any and connect the 5V power supply, one end connects 7,1,11,13 pins of JTAG adaptor union respectively, and 7,1,11,13 pins of JTAG adaptor union link to each other with 29,31,28,34 pins of master control node microcontroller respectively again; JTAG adaptor union 9 pins connect resistance R 111 back ground connection, and resistance R 111 links to each other with master control node 62 pins again near JTAG adaptor union one end; All the other pins are empty.The interface that this circuit module provides a standard for the download and the debugging of control program.
Clock circuit module 303: capacitor C 101, capacitor C 102 1 ends link to each other with master control node microcontroller 60,61 pins respectively, and the other end is intersected in one point earth, connect crystal oscillator Q1 between master control node microcontroller 60,61 pins.This module provides clock signal for CPU in the microcontroller and some other internal integrated circuit.
Reset circuit module 304: reset button S1 is connected between microcontroller reset pin and the ground and a capacitor C 112 in parallel, and reset button S1 connects and connects the 5V power supply after microcontroller reset pin one end connects a resistance R 117 again.This module makes program begin to carry out from appointment for microcontroller chip provides the initialization means.
CAN transceiver module 305:CAN transceiver input end links to each other with master control node microcontroller CAN module pin; Two mouths link to each other with the CAN bus, wherein are connected to resistance R 106 between the mouth two pins.Master control node CAN transceiver is responsible for carrying out data communication Physical layer on from Control Node CAN transceiver by the CAN bus network with other four.
Warning indicating module 306: LED 1, LED2, LED3, each anode of LED4 be connecting resistance R101, resistance R 102, resistance R 103, resistance R 104 and be intersected in any and connect the 5V power supply respectively, and negative electrode connects 1,2,3,4 pins of master control node microcontroller respectively.This module is responsible for that system breaks down or is reported to the police indication during other problem.
Input channel module 307: resistance R 112, resistance R 113, resistance R 114, resistance R 115, resistance R 116 1 ends are vacated, one end connects 9,10,11,12,13 pins of master control node microcontroller A/D modular converter respectively, each resistance connects master control node microcontroller pin one end and is connected with capacitor C 104, capacitor C 105, capacitor C 106, capacitor C 107, capacitor C 108 respectively, is intersected in one point earth.This module is responsible for receiving brake-pedal-travel sensor, four signals that wheel speed sensors transmits, and carries out sending to microcontroller after the corresponding Filtering Processing.
Be as shown in Figure 4 based on CAN bus network communication electric mechanical type brake system electric control unit from the Control Node partial circuit, comprise from Control Node microcontroller 401, JTAG debugging interface module 302, clock circuit module 303, reset circuit module 304, CAN transceiver module 305, braking motor driver module 402.JTAG debugging interface module 302, clock circuit module 303, reset circuit module 304, CAN transceiver module 305, braking motor driver module 402 link to each other respectively with from Control Node microcontroller 401.Be responsible for from the CAN bus network, receiving one's own signal and exporting chip for driving to from Control Node microcontroller 401; Braking motor driver module 402 is responsible for the driving of high-power braking motor is handled; Power module (Fig. 2) is responsible for providing required power supply to master and slave Control Node related chip.
Each modular circuit annexation is as follows:
JTAG debugging interface module 302:JTAG adaptor union 2 pins connect the 5V power supply, 4,6,12 pin ground connection; 3,8,10 pins directly connect 30,63,32 pins from the Control Node microcontroller respectively; Resistance R 107, resistance R 108, resistance R 109, resistance R 110 1 ends are intersected in any and connect the 5V power supply, one end connects 7,1,11,13 pins of JTAG adaptor union respectively, and 7,1,11,13 pins of JTAG adaptor union link to each other with 29,31,28,34 pins from the Control Node microcontroller respectively again; JTAG adaptor union 9 pins connect resistance R 111 back ground connection, and resistance R 111 links to each other again with from Control Node microcontroller 62 pins near JTAG adaptor union one end; All the other pins are empty.The interface that this circuit module provides a standard for the download and the debugging of control program.
Clock circuit module 303: capacitor C 101, capacitor C 102 1 ends link to each other respectively with from Control Node microcontroller 60,61 pins, and the other end is intersected in one point earth, from connecting crystal oscillator Q1 between Control Node microcontroller 60,61 pins.This module provides clock signal for CPU in the microcontroller and some other internal integrated circuit.
Reset circuit module 304: reset button S1 is connected between microcontroller reset pin and the ground and a capacitor C 112 in parallel, and reset button S1 connects and connects the 5V power supply after microcontroller reset pin one end connects a resistance R 117 again.This module makes program begin to carry out from appointment for microcontroller chip provides the initialization means.
CAN transceiver module 305:CAN transceiver input end with link to each other from Control Node microcontroller CAN module pin; Two mouths link to each other with the CAN bus, wherein are connected to resistance R 106 between the mouth two pins.Be responsible for carrying out data communication on the Physical layer by the CAN bus network from Control Node CAN transceiver with master control node CAN transceiver.
Braking motor driver module 402: from the relevant pin of Control Node chip for driving connect 12V or 5V power supply.Input end INA and INB pin and be output as from the Control Node microcontroller between 33,34 pins of motor positive and inverse signal and be connected with resistance R 204, resistance R 205 respectively; Input end PWM pin and be output as from the Control Node microcontroller between 43 pins of pwm signal and be connected with resistance R 203.Mouth OUTA, OUTB connect the braking drive motor.This module is responsible for the driving of high-power braking motor is handled.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, and any circuit after simple transformation on the utility model basis all belongs to protection domain of the present utility model.
Claims (3)
1. an electric mechanical type brake system electric control unit is characterized in that, it comprises that CAN bus network, master control node and four are from Control Node; Described four link to each other with the master control node by the CAN bus respectively from Control Node.
2. electric mechanical type brake system electric control unit according to claim 1, it is characterized in that described master control node mainly is made up of master control node microcontroller (301), JTAG debugging interface module (302), clock circuit module (303), reset circuit module (304), CAN transceiver module (305), warning indicating module (306) and input channel module (307); JTAG debugging interface module (302), clock circuit module (303), reset circuit module (304), CAN transceiver module (305), warning indicating module (306), input channel module (307) link to each other with master control node microcontroller (301) respectively.
3. electric mechanical type brake system electric control unit according to claim 1, it is characterized in that, described from Control Node mainly by forming from Control Node microcontroller (401), JTAG debugging interface module (302), clock circuit module (303), reset circuit module (304), CAN transceiver module (305) and braking motor driver module (402); Described JTAG debugging interface module (302), clock circuit module (303), reset circuit module (304), CAN transceiver module (305), braking motor driver module (402) link to each other respectively with from Control Node microcontroller (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820086247XU CN201193013Y (en) | 2008-04-25 | 2008-04-25 | Electric-control unit of electric mechanical brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820086247XU CN201193013Y (en) | 2008-04-25 | 2008-04-25 | Electric-control unit of electric mechanical brake system |
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| Publication Number | Publication Date |
|---|---|
| CN201193013Y true CN201193013Y (en) | 2009-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820086247XU Expired - Lifetime CN201193013Y (en) | 2008-04-25 | 2008-04-25 | Electric-control unit of electric mechanical brake system |
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| CN (1) | CN201193013Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139259A1 (en) * | 2009-06-01 | 2010-12-09 | 芜湖普威技研有限公司 | Vehicle brake-by-wire method and device based on can bus communication technology |
| CN101700742B (en) * | 2009-10-28 | 2012-06-13 | 洛阳乾禾仪器有限公司 | Vehicle body braking electrical power generating system |
| CN103523022A (en) * | 2013-10-30 | 2014-01-22 | 吉林大学 | Hybrid electric vehicle speed estimating method |
| CN110562227A (en) * | 2019-08-22 | 2019-12-13 | 中国第一汽车股份有限公司 | Electro-hydraulic coupling braking system and vehicle |
-
2008
- 2008-04-25 CN CNU200820086247XU patent/CN201193013Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139259A1 (en) * | 2009-06-01 | 2010-12-09 | 芜湖普威技研有限公司 | Vehicle brake-by-wire method and device based on can bus communication technology |
| CN101700742B (en) * | 2009-10-28 | 2012-06-13 | 洛阳乾禾仪器有限公司 | Vehicle body braking electrical power generating system |
| CN103523022A (en) * | 2013-10-30 | 2014-01-22 | 吉林大学 | Hybrid electric vehicle speed estimating method |
| CN110562227A (en) * | 2019-08-22 | 2019-12-13 | 中国第一汽车股份有限公司 | Electro-hydraulic coupling braking system and vehicle |
| CN110562227B (en) * | 2019-08-22 | 2021-04-02 | 中国第一汽车股份有限公司 | Electro-hydraulic coupling braking system and vehicle |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090211 |
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| CX01 | Expiry of patent term |