CN203543925U - Emergency brake device of vehicle brake-by-wire system - Google Patents
Emergency brake device of vehicle brake-by-wire system Download PDFInfo
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- CN203543925U CN203543925U CN201320635078.1U CN201320635078U CN203543925U CN 203543925 U CN203543925 U CN 203543925U CN 201320635078 U CN201320635078 U CN 201320635078U CN 203543925 U CN203543925 U CN 203543925U
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Abstract
The utility model discloses an emergency brake device of a vehicle brake-by-wire system. The emergency brake device comprises a brake system control unit, a standby control unit, a power supply, a triode and a brake lamp switch which is respectively and controllably connected with brake actuators and a brake pedal of a vehicle wheel and can be turned on when a driver steps down the brake pedal. The standby control unit is provided with a power supply end a, a triode control end b, a connecting end c and a connecting end d. The brake lamp switch is connected onto the connecting end b. The brake system control unit is connected onto the connecting end c. The power supply is connected onto the power supply end a and is also connected onto a collector of the triode. A base of the triode is connected onto the triode control end b. An emitter of the triode is respectively connected with multiple brake actuators. The emergency brake device can provide an effective emergency brake function when the vehicle brake-by-wire system is failed, the structure is simple, the cost is low and the modification to the existing vehicle brake-by-wire system is less.
Description
Technical field
The utility model relates to a kind of vehicle brake-by-wire system emergency brake equipment, belongs to vehicle brake technology field.
Background technology
Brake system is one of important component part of automobile, is directly connected to comprehensive vehicle performance and the security of the lives and property, comprises running brake, Parking Brake and additional brake.Running brake is automobile primary drg, generally adopts drum-type or disc type friction braking mode, and the kinetic energy of automobile, potential energy are converted into heat energy by friction, realizes the object of car deceleration or braking.Although conventional hydraulic formula, vapour-pressure type running brake can meet the requirements of existing brake legislation, exist speed of response slow, can not active adjustment, be not easy to the weak points such as integrated control, be not suitable for the demand for development of current automobile.
Line control brake system comprises two kinds of EHB (EHB) and electromechanical braking systems (EMB), by brake pedal module, ECU electronic control unit and brake actuator etc., formed, take electric wire as information transmission media, control unit is controlled brake actuator action according to brake pedal position sensor signal identification of driver braking intention, realizes the control to wheel braking force.Line control brake system has not to be needed vacuum booster unit, compact conformation, superior performance and is easy to the features such as integrated control, has made up the deficiency in traditional braking system architecture principle, is representing the development tendency of running drg.But, because line control brake system has been cancelled direct connection the between brake pedal and brake actuator, if ECU electronic control unit, brake pedal module, brake actuator and between them any one of connection line break down, or automobile power source power-off, line control brake system will there will be the dangerous situation of braking failure.Therefore, emergency brake function is one of subject matter of line control brake system always.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, a kind of vehicle brake-by-wire system emergency brake equipment is provided, when vehicle brake-by-wire thrashing, emergency brake function effectively can be provided, and simple in structure, with low cost, to existing vehicle line control brake system, change less.
The utility model solves the problems of the technologies described above the technical scheme of taking: a kind of vehicle brake-by-wire system emergency brake equipment, it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection.
Further, on standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
Further, when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b.
Further, when standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.
Further, power supply comprises backup power and automobile power source, and backup power and automobile power source are connected in parallel.
Brake actuator is oil-feed electromagnetic valve or drive motor, and oil-feed electromagnetic valve is four, is respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve.
The utility model also provides a kind of vehicle brake-by-wire system emergency brake equipment, it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron, power cut-off emergency brake circuit and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection;
Brake actuator has four, is respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve;
Power cut-off emergency brake circuit comprises backup power, resistance R 1, resistance R 2 and normally closed contact relay, power supply is automobile power source, backup power, the near front wheel oil-feed electromagnetic valve coil and off front wheel oil-feed electromagnetic valve coil, relay contact part and stop lamp switch in parallel connect and compose the electrical loop of master control successively, described automobile power source, resistance R 2, relay coil part and stop lamp switch connect and compose the main control loop of controlling normally closed contact relay on-off successively, and described automobile power source is in parallel with backup power again after connecting with resistance R 1.
Further, on standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
Further, when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b.
Further, when standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.
Adopted after technique scheme, the utlity model has following beneficial effect:
The utility model adopts standby control unit, when vehicle line control brake system breaks down, during cisco unity malfunction, realizes car emergency brake by the action of standby control unit control brake actuator; The utility model has also further adopted backup power, when automobile power source power-off, by backup power, power to standby control unit and brake actuator, realize car emergency braking, the utility model can effectively provide emergency brake function, have simple in structure, cost is lower and existing line control brake system is changed to the advantages such as less.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the first structure of vehicle brake-by-wire system emergency brake equipment of the present utility model;
Fig. 2 is the functional block diagram of the second structure of vehicle brake-by-wire system emergency brake equipment of the present utility model;
Fig. 3 is the functional block diagram of the power cut-off emergency brake circuit part in the second structure of vehicle brake-by-wire system emergency brake equipment of the present utility model.
The specific embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Figure 1, a kind of vehicle brake-by-wire system emergency brake equipment, it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state; Wherein, it is according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal and refer to the process of standby control unit: when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection.Aerotron conducting during high level, aerotron cut-off during low level.
As shown in Figure 1, on standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.Can certainly be set to other number of times.
Power supply comprises backup power and automobile power source, and backup power and automobile power source are connected in parallel.
Brake actuator is oil-feed electromagnetic valve or drive motor, and oil-feed electromagnetic valve is four, is respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve.
Standby control unit can be used 8 or 16 micro controller systems.
The principle of work of the present embodiment is as follows:
When chaufeur is stepped on brake pedal, stop lamp switch is closed, if vehicle brake-by-wire system works is normal, brake system control unit (is made as half second here) at set intervals and to standby control unit, sends a pulse acknowledgment signal by coupling end c, standby control unit starts to receive this pulse acknowledgment signal from high level becomes low level from coupling end d, if the pulse acknowledgment signal receiving is normal, think that vehicle brake-by-wire system works is normal, standby control unit is inoperative, if standby control unit does not receive pulse acknowledgment signal continuous three times, think that vehicle line control brake system breaks down, standby control unit can order about flicker of fault indicating lamps by indicator lamp coupling end e and remind chaufeur to note, according to stop lamp switch signal, be the voltage of pin d simultaneously, a high level is provided to aerotron control end b, now aerotron conducting, automobile power source process aerotron is to the near front wheel, off front wheel, the oil-feed solenoid valve of left rear wheel and off hind wheel, the conducting of brake system inflow pipeline, high hydraulic brake fluid enters four wheel cylinders, realize car emergency braking.
Backup power is anodal to be connected with automobile power source positive pole, under normal circumstances, automobile power source charges to backup power, and backup power is in full charge state, if automobile bumps, cause automobile power source to disconnect, now by backup power, by feeder ear a, power to standby control unit.Because automobile power source disconnects, vehicle line control brake system cisco unity malfunction, standby control unit coupling end c does not receive pulse acknowledgment signal, therefore reinstate emergency brake function, provide a high level to make aerotron conducting to aerotron control end b, backup power is given the oil-feed solenoid valve of four wheels, the conducting of brake system inflow pipeline by aerotron, high hydraulic brake fluid enters four wheel cylinders, realizes car emergency braking.Meanwhile, standby control unit sends impulse singla by indicator lamp coupling end e and orders about flicker of fault indicating lamps, reminds chaufeur to note.
Embodiment bis-
As shown in Figure 2,3, a kind of vehicle brake-by-wire system emergency brake equipment, it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron, power cut-off emergency brake circuit and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state; Wherein, it is according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal and refer to the process of standby control unit: when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection; Aerotron conducting during high level, aerotron cut-off during low level.
Brake actuator has four, is respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve;
As shown in Figure 3, power cut-off emergency brake circuit comprises backup power, resistance R 1, resistance R 2 and normally closed contact relay, power supply is automobile power source, backup power, the near front wheel oil-feed electromagnetic valve coil and off front wheel oil-feed electromagnetic valve coil in parallel, relay contact part and stop lamp switch connect and compose the electrical loop of master control successively, described automobile power source, resistance R 2, relay coil part and stop lamp switch connect and compose the main control loop of controlling normally closed contact relay on-off successively, described automobile power source is in parallel with backup power again after connecting with resistance R 1.
As shown in Figure 2, on standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
Standby control unit can be used 8 or 16 micro controller systems.
When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.
The principle of work of the present embodiment is as follows:
When chaufeur is stepped on brake pedal, stop lamp switch is closed, if vehicle brake-by-wire system works is normal, brake system control unit (is made as half second here) at set intervals and to standby control unit, sends a pulse acknowledgment signal by coupling end c, standby control unit starts to receive this pulse acknowledgment signal from high level becomes low level from coupling end d, if the pulse acknowledgment signal receiving is normal, think that vehicle brake-by-wire system works is normal, standby control unit is inoperative, if standby control unit does not receive the confirmation signal continuous three times, think that vehicle line control brake system breaks down, standby control unit orders about flicker of fault indicating lamps by indicator lamp coupling end e and reminds chaufeur to note, according to stop lamp switch signal (pulse control signal), be the voltage of coupling end d simultaneously, a high level is provided to pin b, now aerotron conducting, automobile power source process aerotron is to the near front wheel, off front wheel, the oil-feed solenoid valve of left rear wheel and off hind wheel, the conducting of brake system inflow pipeline, high hydraulic brake fluid enters four wheel cylinders, realize car emergency braking.
Backup power is anodal to be connected with automobile power source positive pole, and under normal circumstances, automobile power source charges to backup power, and backup power is in full charge state.Backup power is connected with two front-wheel oil-feed electromagnetic valve coils through normally closed contact relay, stop lamp switch, two front-wheel oil-feed electromagnetic valve coils are relation in parallel, automobile power source, resistance R 2, relay coil part and stop lamp switch form the main control circuit of normally closed contact relay, resistance R 1 can be taken as 10K Ω, resistance R 2 resistances are determined with selected relay coil resistance, can be taken as 200 Ω.
When chaufeur is not stepped on brake pedal, stop lamp switch is opened, and two front-wheel oil-feed electromagnetic valve coil circuit disconnect, and do not have electric current to pass through, and backup power circuit is inoperative; When stop lamp switch closure, and when automobile power source is normal, automobile power source is via resistance R 2, relay coil part and stop lamp switch ground connection, relay coil partly has electric current by producing suction, relay contact to be partially opened, the electrical loop open circuit of master control, two front-wheel oil-feed electromagnetic valve coils do not have electric current to pass through, and backup power circuit is inoperative; When stop lamp switch closure, and during automobile power source power-off, relay coil does not partly have electric current to pass through, relay contact part is closed, the electrical return path state of master control, now backup power is given two front-wheel oil-feed electromagnetic valve coil power supplies, the conducting of two front-wheel inflow pipelines through relay contact part, stop lamp switch, high hydraulic brake fluid enters two front-wheel wheel cylinders, realizes car emergency braking.
Above-described specific embodiment; technical matters, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a vehicle brake-by-wire system emergency brake equipment, it is characterized in that: it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection.
2. vehicle brake-by-wire system emergency brake equipment according to claim 1, it is characterized in that: on described standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
3. vehicle brake-by-wire system emergency brake equipment according to claim 1 and 2, it is characterized in that: when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b.
4. vehicle brake-by-wire system emergency brake equipment according to claim 3, it is characterized in that: when standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.
5. vehicle brake-by-wire system emergency brake equipment according to claim 1 and 2, is characterized in that: described power supply comprises backup power and automobile power source, and backup power and automobile power source are connected in parallel.
6. vehicle brake-by-wire system emergency brake equipment according to claim 1 and 2, it is characterized in that: described brake actuator is oil-feed electromagnetic valve or drive motor, and oil-feed electromagnetic valve is four, be respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve.
7. a vehicle brake-by-wire system emergency brake equipment, it is characterized in that: it comprises the brake actuator of brake system control unit, standby control unit, power supply, aerotron, power cut-off emergency brake circuit and abrupt deceleration vehicle wheel respectively and is connected with brake pedal phase control and its closed stop lamp switch when chaufeur is stepped on brake pedal, standby control unit has feeder ear a, aerotron control end b, coupling end c and coupling end d, wherein:
It is upper that stop lamp switch is connected to coupling end d, and it tramples state transfer pulse control signal to standby control unit according to brake pedal;
Brake system control unit is connected on coupling end c, it according to the working state signal of pulse control signal and vehicle line control brake system self optionally and be interval time shape and transmit pulse acknowledgment signal to standby control unit, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, makes aerotron control end b in low level state or high level state;
It is upper that power supply is connected to feeder ear a, and be connected on the collecting electrode of aerotron;
The base stage of aerotron is connected on aerotron control end b, the emitter of aerotron is connected with a plurality of brake actuators respectively, described power supply, aerotron and a plurality of brake actuator form an electrical loop, aerotron, according to the high low state signal of level on aerotron control end b, makes the conducting of electrical loop or disconnection;
Brake actuator has four, is respectively the near front wheel oil-feed electromagnetic valve, off front wheel oil-feed electromagnetic valve, left rear wheel oil-feed electromagnetic valve and off hind wheel oil-feed electromagnetic valve;
Power cut-off emergency brake circuit comprises backup power, resistance R 1, resistance R 2 and normally closed contact relay, power supply is automobile power source, backup power, the near front wheel oil-feed electromagnetic valve coil and off front wheel oil-feed electromagnetic valve coil, relay contact part and stop lamp switch in parallel connect and compose the electrical loop of master control successively, described automobile power source, resistance R 2, relay coil part and stop lamp switch connect and compose the main control loop of controlling normally closed contact relay on-off successively, and described automobile power source is in parallel with backup power again after connecting with resistance R 1.
8. vehicle brake-by-wire system emergency brake equipment according to claim 7, it is characterized in that: on described standby control unit, also there is indicator lamp coupling end e, on indicator lamp coupling end e, be connected with fault-indicating lamp, standby control unit has according to brake system control unit or without transmitting pulse acknowledgment signal, to fault-indicating lamp, control signal or flicker control signal are extinguished in transmission.
9. according to the vehicle brake-by-wire system emergency brake equipment described in claim 7 or 8, it is characterized in that: when standby control unit obtains pulse control signal, and when vehicle line control brake system is normally worked, brake system control unit transmits pulse acknowledgment signal at set intervals to standby control unit, and standby control unit transmits low level to the base stage of aerotron according to pulse acknowledgment signal by aerotron control end b; When standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, standby control unit does not receive pulse acknowledgment signal, and standby control unit transmits high level to the base stage of aerotron by aerotron control end b.
10. vehicle brake-by-wire system emergency brake equipment according to claim 9, it is characterized in that: when standby control unit obtains pulse control signal, and vehicle line control brake system is when faulty condition, brake system control unit stops transmitting pulse acknowledgment signal to standby control unit, the number of times that standby control unit does not receive pulse acknowledgment signal is three times, and standby control unit just transmits high level to the base stage of aerotron by aerotron control end b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320635078.1U CN203543925U (en) | 2013-10-15 | 2013-10-15 | Emergency brake device of vehicle brake-by-wire system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320635078.1U CN203543925U (en) | 2013-10-15 | 2013-10-15 | Emergency brake device of vehicle brake-by-wire system |
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| CN203543925U true CN203543925U (en) | 2014-04-16 |
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| CN201320635078.1U Withdrawn - After Issue CN203543925U (en) | 2013-10-15 | 2013-10-15 | Emergency brake device of vehicle brake-by-wire system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496357A (en) * | 2013-10-15 | 2014-01-08 | 江苏理工学院 | Emergency brake device of automobile line control brake system |
| CN107444379A (en) * | 2016-05-24 | 2017-12-08 | 罗伯特·博世有限公司 | It is capable of the vehicle brake apparatus and its control method of electronically pressure regulation |
| CN110395238A (en) * | 2019-08-06 | 2019-11-01 | 苏州泛像汽车技术有限公司 | A kind of line control brake system and control method powering off band-type brake |
| CN111731254A (en) * | 2020-06-29 | 2020-10-02 | 德尔福科技(苏州)有限公司 | Control device and control method for motor-driven parking brake mechanism |
| CN112622844A (en) * | 2020-12-18 | 2021-04-09 | 东风越野车有限公司 | Multi-axis EPB peak shifting area clamping control method |
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2013
- 2013-10-15 CN CN201320635078.1U patent/CN203543925U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496357A (en) * | 2013-10-15 | 2014-01-08 | 江苏理工学院 | Emergency brake device of automobile line control brake system |
| CN103496357B (en) * | 2013-10-15 | 2015-12-16 | 江苏理工学院 | Vehicle brake-by-wire system emergency brake equipment |
| CN107444379A (en) * | 2016-05-24 | 2017-12-08 | 罗伯特·博世有限公司 | It is capable of the vehicle brake apparatus and its control method of electronically pressure regulation |
| CN110395238A (en) * | 2019-08-06 | 2019-11-01 | 苏州泛像汽车技术有限公司 | A kind of line control brake system and control method powering off band-type brake |
| CN111731254A (en) * | 2020-06-29 | 2020-10-02 | 德尔福科技(苏州)有限公司 | Control device and control method for motor-driven parking brake mechanism |
| CN111731254B (en) * | 2020-06-29 | 2021-10-29 | 德尔福科技(苏州)有限公司 | Control device and control method for motor-driven parking brake mechanism |
| CN112622844A (en) * | 2020-12-18 | 2021-04-09 | 东风越野车有限公司 | Multi-axis EPB peak shifting area clamping control method |
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