CN104192118A - Electronic parking brake system controller and vehicle - Google Patents
Electronic parking brake system controller and vehicle Download PDFInfo
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- CN104192118A CN104192118A CN201410436732.5A CN201410436732A CN104192118A CN 104192118 A CN104192118 A CN 104192118A CN 201410436732 A CN201410436732 A CN 201410436732A CN 104192118 A CN104192118 A CN 104192118A
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Abstract
The invention provides an electronic parking brake system controller and a vehicle. The system comprises a motor driving module, an acceleration sensor, a switching value processing module, an auxiliary controller and a main controller. The motor driving module is used for controlling a parking motor, the acceleration sensor is used for detecting the acceleration value of the vehicle, the switching value processing module is used for obtaining a plurality of switching states of an electronic parking switch, the auxiliary controller is used for generating a first control instruction according to the switching states of the electronic parking switch and sending the first control instruction to the motor driving module, the main controller is used for generating a second control instruction according to the switching states of the electronic parking switch, the acceleration value and the first control instruction, and the motor driving module controls the parking motor according to the first control instruction and the second control instruction. Vehicle safety can be effectively improved by means of the electronic parking brake system controller.
Description
Technical field
The present invention relates to automobile technical field, particularly a kind of electronic brake system controller and vehicle.
Background technology
Electronic brake system Electrical Parking Brake (EPB), the long time property braking function referring to by the provisional braking in driving process and after stopping combines, and is realized the technology of stopping brake by electronic control mode.Rear clamp integrated type Parking Brake is the recent development of automobile brake industry, is the direction of electronic brake system development.System is integrated together motor and brake caliper, and controller is independently controlled left and right brake clamp respectively, and system safety is higher; Because being directly controls brake clamp, system response time is faster; Transmission link in the middle of integrated actuator design has reduced, the reliability of guarantee system; Independently control method of left and right, makes system under the prerequisite of partial fault, also can ensure parking reliability, increases vehicle parking safety; System has more automatic control function, has improved ride comfort.
Motor drive mode solution mostly is: take traditional H bridge mode to control motor.H bridge circuit is a kind of basic driving circuit structure, and in modern electrical machine control, majority is taked bridge circuit structure, by such connection, just can realize drive motor forward, reversion, shutdown and 4 states of short-circuit braking.As can driven two motors in left and right, need two full-bridges to drive 8 metal-oxide-semiconductors of chips incorporate or two pairs of H bridges of four half-bridge driven chips compositions, respectively two motors are controlled.But this mode does not have suitable integrated chip, need to adopt discrete scheme, i.e. power supply chip+diagnostic circuit+metal-oxide-semiconductor+motor drive ic, taking up room can be larger, and cost is very high.
Take traditional H bridge mode to control and there is no suitable integrated chip motor, need to adopt discrete scheme, i.e. power supply chip+diagnostic circuit+metal-oxide-semiconductor+motor drive ic+house dog, taking up room can be larger, and cost is very high.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of electronic brake system controller.Effectively lifting vehicle safety of this electronic brake system controller.
Another object of the present invention is to propose a kind of vehicle.
To achieve these goals, the embodiment of a first aspect of the present invention discloses a kind of electronic brake system controller, comprising: motor drive module, for controlling parking motor; Acceleration pick-up, for detection of the accekeration of vehicle; Switching value processing module, described switching value processing module is for obtaining multiple on off states of electronic parking switch; From controller, describedly be connected with described motor drive module with described switching value processing module from controller, described from controller for generating the first control command according to multiple on off states of described electronic parking switch, and described the first control command is sent to described motor drive module; And master controller, described master controller is connected from controller with described with described motor drive module, described switching value processing module, described acceleration pick-up, described master controller is for generating the second control command according to multiple on off states of described electronic parking switch, described accekeration and described the first control command, wherein, described motor drive module is controlled described parking motor according to described the first control command and the second control command.
According to the electronic brake system controller of the embodiment of the present invention, multiple functional modules can Integrated design, has improved the integrated level of electronic brake system controller, the volume of electronic brake system controller is reduced, cost.Take principal and subordinate's micro controller system (be master controller and from controller) mutually to monitor, avoid maloperation, erroneous judgement, can effectively promote the safe class of electronic brake system controller.Effectively lifting vehicle safety.
In addition, electronic brake system controller according to the above embodiment of the present invention can also have following additional technical characterictic:
In some instances, described master controller and described from communicating by serial peripheral equipment interface SPI interface between controller.
In some instances, also comprise: power module, described power module and described parking motor, described motor drive module, described acceleration pick-up, described switching value processing module, be describedly connected with described master controller from controller, be used to described parking motor, described motor drive module, described acceleration pick-up, described switching value processing module, described from controller and the power supply of described master controller.
In some instances, described power module specifically comprises: the first power management module, for the voltage of the first predeterminated voltage value is provided, think described parking motor power supply; Second source administration module, described second source administration module is connected with described the first power management module, for the voltage of the second predeterminated voltage value is provided, think described motor drive module, described acceleration pick-up, described switching value processing module, described from controller and the power supply of described master controller, wherein, described the second predeterminated voltage value is less than described the first predeterminated voltage value.
In some instances, described second source administration module specifically comprises: the first reference voltage module, described the first reference voltage module is connected with described acceleration pick-up with described master controller, and described the first reference voltage module is used to described master controller and the power supply of described acceleration pick-up; And the second reference voltage module, described the second reference voltage module is connected with described switching value processing module from controller with described, described the second reference voltage module is used to described from controller and the power supply of described switching value processing module, wherein, described the second reference voltage module and described the first reference voltage module are separate.
In some instances, also comprise: CAN communication module, described CAN communication module is connected with described master controller.
In some instances, described master controller and have respectively AD converter from controller, is respectively used to receive the motor status sampled signal of described drive and control of electric machine module feedback.
In some instances, described motor drive module comprises: the first relay H bridge and the second relay H bridge; Drive and control asic chip, described driving control asic chip is respectively with described master controller, be connected with the second relay H bridge from controller, described the first relay H bridge.
In some instances, described motor drive module also comprises: house dog control submodule, and for carrying out verification.
The embodiment of second aspect present invention discloses a kind of vehicle, comprising: the electronic brake system controller as described in above-described embodiment.This vehicle has advantages of safe.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the structured flowchart of electronic brake system controller according to an embodiment of the invention;
Fig. 2 is the constructional drawing of the second source administration module of electronic brake system controller according to an embodiment of the invention;
Fig. 3 is the constructional drawing of the first power management module of electronic brake system controller according to an embodiment of the invention;
Fig. 4 is the structured flowchart of the master controller of electronic brake system controller according to an embodiment of the invention;
Fig. 5 is the structured flowchart from controller of electronic brake system controller according to an embodiment of the invention;
Fig. 6 is the structured flowchart of the motor drive module of electronic brake system controller according to an embodiment of the invention;
Fig. 7 is the structured flowchart of the switching value processing module of electronic brake system controller according to an embodiment of the invention;
Fig. 8 is the structured flowchart of the CAN communication module of electronic brake system controller according to an embodiment of the invention.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of instructions such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand above-mentioned term concrete meaning in the present invention.
Describe according to electronic brake system controller and the vehicle of the embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the structured flowchart of electronic brake system controller according to an embodiment of the invention.As shown in Figure 1, electronic brake system controller according to an embodiment of the invention, comprising: motor drive module 110, acceleration pick-up 120, switching value processing module 130, from controller 140 and master controller 150.
Wherein, motor drive module 110 is for controlling parking motor.Acceleration pick-up 120 is for detection of the accekeration of vehicle.Switching value processing module 130 is for obtaining multiple on off states of electronic parking switch.Be connected with motor drive module 110 with switching value processing module 130 from controller 140, generate the first control command from controller 140 for the multiple on off states according to electronic parking switch, and the first control command is sent to motor drive module 110.Master controller 150 is with motor drive module 110, acceleration pick-up 120, switching value processing module 130 and be connected from controller 140, master controller 150 is for generating the second control command according to multiple on off states of electronic parking switch, accekeration and the first control command, wherein, motor drive module 110 is controlled parking motor according to the first control command and the second control command.
Each functional module of electronic brake system controller below in conjunction with accompanying drawing 2-7 to the embodiment of the present invention is elaborated.
Shown in Fig. 1, Fig. 2 and Fig. 3, the electronic brake system controller of the embodiment of the present invention, also comprises: power module 160.Power module 160 with parking motor, motor drive module 110, acceleration pick-up 120, switching value processing module 130, be connected with master controller 150 from controller 140, be used to parking motor, motor drive module 110, acceleration pick-up 120, switching value processing module 130, power from controller 140 and master controller 150.
Wherein, power module 160 specifically comprises: the first power management module and second source administration module.Specifically, the first power management module, for the voltage of the first predeterminated voltage value is provided, is thought the power supply of parking motor.Second source administration module is connected with the first power management module, for the voltage of the second predeterminated voltage value is provided, think motor drive module 110, acceleration pick-up 120, switching value processing module 130, power from controller 140 and master controller 150, wherein, the second predeterminated voltage value is less than the first predeterminated voltage value.
Further, second source administration module specifically comprises: the first reference voltage module and the second reference voltage module, wherein, the first reference voltage module VCC5V is connected with acceleration pick-up 120 grades with master controller 150, and the first reference voltage module VCC5V is used to the power supply such as master controller 150 and acceleration pick-up 120.The second reference voltage module VCC5VA be connected with switching value processing module 130 grades from controller 140, the second reference voltage module VCC5VA is used to from power supplies such as controller 140 and switching value processing modules 130, wherein, the second reference voltage module VCC5VA and the first reference voltage module VCC5V are separate.
As shown in Figures 2 and 3, the ASIC that second source administration module is chosen has builtin voltage regulatory function, can external MOS or aerotron export corresponding 5V signal, there is two-way 5V output signal, be respectively host scm (being master controller 150) and power from micro controller system (from controller 140), two-way 5V outlet chamber is separate simultaneously, and there are two independent benchmark inside, can not cause phase mutual interference, break down and can not affect another road signal in a road simultaneously.For security consideration, the maximum output load current of the 5V of the first reference voltage module VCC5V output can reach 150mA, and the maximum output load current of 5V of the second reference voltage module VCC5VA output can reach 25mA, can meet driving requirement completely.As shown in Figure 3, the first power management module as shown in Figure 3.12V power supply is divided into three tunnels, originates from the normal electric system of storage battery, and wherein two-way, for left and right motor independently-powered (i.e. two parking motors), can ensure that wherein rear another road of road inefficacy still can work on.Another road offers 5V power module, for circuit card power logic circuitry.
As shown in Figure 1, Figure 4 and Figure 5, master controller 150 and communicating by serial peripheral equipment interface SPI interface between controller 140.
As shown in Figure 4, master controller 150 (being host scm) mainly provides motor to drive (for example accekerations) such as pwm signal (i.e. the second control command), gradient signals that EPB on off state (being multiple on off states of electronic parking switch) is accurately judged, sensor recorded simultaneously gather and judge, in addition the signals such as power supply voltage are detected, carry out SPI communication, CAN communication receives the diagnostic signal from modules simultaneously.
As shown in Figure 5, from controller 140 (from micro controller system) and host scm, the multiple on off states such as electronic parking switch are detected simultaneously, carry out each other verification, by AD mouth, motor driven voltage is detected simultaneously simultaneously.Be master controller and there is respectively AD converter from controller, be respectively used to receive the motor status sampled signal that drive and control of electric machine module 110 is fed back.
As shown in Figure 6, motor drive module 110 comprises: the first relay H bridge and the second relay H bridge; Drive and control asic chip, drive and control asic chip respectively with master controller 150, be connected from controller 140, the first relay H bridge and the second relay H bridge.In one embodiment of the invention, motor drive module 110 also comprises: house dog control submodule, and for carrying out verification.Motor drive module 110 adopts pulse duration modulation (PWM) to control H bridge circuit and implements the control to parking motor, and shown in Fig. 6, it is to adopt integrate motor to drive chip ASIC to realize the speed governing of DC machine (parking motor) that motor drives.
Motor drive module 110 has following characteristic:
(a) No. four relays drive.
(b) can be used as current sense amplifier (for over-current detection) with the op amp of external feedback resistance.
(c) two-way has voltage and the low limit of current monitoring drives (60mA, can external fault-indicating lamp); The flash that one tunnel has voltage and current monitoring drives (20mA).
(d) the outside flash of two-way drives in advance for outside N_MOSFET and drives.
(e) duplex feeding V5A and V5 can be respectively used to host scm power supply and power from micro controller system, and duplex feeding simultaneously has independently benchmark.
(f) two-way crystal oscillator (major clock+house dog clock), monitoring mutually between two clocks;
(g) monitoring temperature.
(h) Power supply has arousal function and Keep-alive function.
(i) Watchdog function.
(j) two monolithic processor resettings independently.
(k) 8 SPI interfaces.
(l) global function 6.5V-26V.
(m) partial function 4.35V-6.5V.
(n) DEG C-105 DEG C, working temperature range-40.
Can meet the demand of parking motor, simultaneously inner have multiple SPI status registers and order register for the reading and the setting of control signal of fault, has the independent reset output of two-way, the 5V power supply output that two-way is independent.
As shown in Figure 7, switching value processing module 130, EPB on off state (being multiple on off states of electronic parking switch) is accurately judged, and operate accordingly, EPB on off state is the control signal of the input except CAN signal, the mode of selecting principal and subordinate's micro controller system to judge simultaneously and process simultaneously in design, two micro controller systems can judge signal and verification mutually simultaneously, but be input as switching value, need to be converted to can be by the signal of micro controller system processing, need some change-over circuits, according to demand and former machine design adopt micro controller system on off state to be judged with the mode of self exporting Data Comparison self output signal back production data, because switch can obtain different back production results at different conditions to same output signal, certainly in treatment circuit, need to comprise certain buffer circuit, can avoid the misoperation of switch to damage micro controller system pin, adopt BCR11PN and BCR135R to isolate micro controller system output signal and back production signal, can play certain debounce action uses simultaneously.
As shown in Figure 8, also comprise: CAN communication module 170, CAN communication module 170 is connected with master controller 150.CAN communication module 170 is selected TJA1041, and its circuit layout block diagram as shown in Figure 8.TJA1041T has two mode of operations: Normal mode and Standby mode.When STB pin is high level, select Normal mode, normally work; When S pin is low level, select Normal mode, can only receive data by CAN bus and can not send data under this pattern, its CAN controller that can prevent fault impacts whole CAN network service.Terminal resistance is selected 1.3k, the effective CAN bus EMC characteristic that strengthens of 100PF electric capacity and TVS.
To sum up, the electronic brake system controller of the embodiment of the present invention, can be according to the ignition lock signal, EPB on-off signal (being multiple on off states of electronic parking switch) and the sensor signal that gather, judge the intention of chaufeur, send corresponding order-driven parking motor forward and backward according to relevant control policy computing, thereby realize in good time clamping, the release (being the correct control of electronic brake system) of clamp.Parking is the parts that concern passenger's life security, especially clamps in the moment that should not clamp, and it is very disadvantageous to safety that the moment that should not discharge discharges.This electronic brake system controller is taked house dog mode and master, from the mutual monitor mode of micro controller system, guarantee the safe and reliable of electronic brake system controller, avoid maloperation or interference to cause the misoperation of clamp, two micro controller systems are switch amount signal and various diagnostic signal (motor voltage signal simultaneously, over-current detection signal, switching value signal) gather and proofread, under some emergency situation, as the result clamping or release meeting need collect according to two micro controller systems when safety is threatened is judged, as unanimously just carried out and clamp or release movement.Simultaneously in host scm software failure or hardware failure situation, shutoff action that can actuating motor from micro controller system, thus ensure to the full extent passenger's safety.
According to the electronic brake system controller of the embodiment of the present invention, multiple functional modules can Integrated design, has improved the integrated level of electronic brake system controller, the volume of electronic brake system controller is reduced, cost.Take principal and subordinate's micro controller system (be master controller and from controller) mutually to monitor and realize failure monitoring and verification in conjunction with watch dog monitoring mode (program of for example host scm is made mistakes, can reset to host scm), avoid maloperation, erroneous judgement, can effectively promote the safe class of electronic brake system controller.It is minimum that principal and subordinate's micro controller system can make failure rate drop in conjunction with house dog mode, another various diagnosis, fail safe mechanism the safety of passenger under various fault conditions.
Further embodiment of the present invention discloses a kind of vehicle, comprising: the electronic brake system controller as described in above-described embodiment.This vehicle has advantages of safe.
In addition, be all known to those skilled in the art according to other formation of the vehicle of the embodiment of the present invention and effect, in order to reduce redundancy, do not repeat herein.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claim and be equal to and limit.
Claims (10)
1. an electronic brake system controller, is characterized in that, comprising:
Motor drive module, for controlling parking motor;
Acceleration pick-up, for detection of the accekeration of vehicle;
Switching value processing module, described switching value processing module is for obtaining multiple on off states of electronic parking switch;
From controller, describedly be connected with described motor drive module with described switching value processing module from controller, described from controller for generating the first control command according to multiple on off states of described electronic parking switch, and described the first control command is sent to described motor drive module;
Master controller, described master controller is connected from controller with described with described motor drive module, described switching value processing module, described acceleration pick-up, described master controller is for generating the second control command according to multiple on off states of described electronic parking switch, described accekeration and described the first control command
Wherein, described motor drive module is controlled described parking motor according to described the first control command and the second control command.
2. electronic brake system controller according to claim 1, is characterized in that, described master controller and described from communicating by serial peripheral equipment interface SPI interface between controller.
3. electronic brake system controller according to claim 1, is characterized in that, also comprises:
Power module, described power module and described parking motor, described motor drive module, described acceleration pick-up, described switching value processing module, be describedly connected with described master controller from controller, be used to described parking motor, described motor drive module, described acceleration pick-up, described switching value processing module, described from controller and the power supply of described master controller.
4. electronic brake system controller according to claim 3, is characterized in that, described power module specifically comprises:
The first power management module, for the voltage of the first predeterminated voltage value is provided, thinks described parking motor power supply;
Second source administration module, described second source administration module is connected with described the first power management module, for the voltage of the second predeterminated voltage value is provided, think described motor drive module, described acceleration pick-up, described switching value processing module, described from controller and the power supply of described master controller, wherein, described the second predeterminated voltage value is less than described the first predeterminated voltage value.
5. electronic brake system controller according to claim 4, is characterized in that, described second source administration module specifically comprises:
The first reference voltage module, described the first reference voltage module is connected with described acceleration pick-up with described master controller, and described the first reference voltage module is used to described master controller and the power supply of described acceleration pick-up; And
The second reference voltage module, described the second reference voltage module is connected with described switching value processing module from controller with described, described the second reference voltage module is used to described from controller and the power supply of described switching value processing module, wherein, described the second reference voltage module and described the first reference voltage module are separate.
6. electronic brake system controller according to claim 1, is characterized in that, also comprises:
CAN communication module, described CAN communication module is connected with described master controller.
7. electronic brake system controller according to claim 1, is characterized in that, described master controller and have respectively AD converter from controller is respectively used to receive the motor status sampled signal of described drive and control of electric machine module feedback.
8. electronic brake system controller according to claim 1, is characterized in that, described motor drive module comprises:
The first relay H bridge and the second relay H bridge;
Drive and control asic chip, described driving control asic chip is respectively with described master controller, be connected with the second relay H bridge from controller, described the first relay H bridge.
9. electronic brake system controller according to claim 8, is characterized in that, described motor drive module also comprises:
House dog control submodule, for carrying out verification.
10. a vehicle, is characterized in that, comprising: the electronic brake system controller as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436732.5A CN104192118B (en) | 2014-08-29 | Electronic brake system controller and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436732.5A CN104192118B (en) | 2014-08-29 | Electronic brake system controller and vehicle |
Publications (2)
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| CN104192118A true CN104192118A (en) | 2014-12-10 |
| CN104192118B CN104192118B (en) | 2017-01-04 |
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