CN204775199U - Two loop control's car automatic braking system that backs a car - Google Patents
Two loop control's car automatic braking system that backs a car Download PDFInfo
- Publication number
- CN204775199U CN204775199U CN201520434560.8U CN201520434560U CN204775199U CN 204775199 U CN204775199 U CN 204775199U CN 201520434560 U CN201520434560 U CN 201520434560U CN 204775199 U CN204775199 U CN 204775199U
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- CN
- China
- Prior art keywords
- brake
- return circuit
- reversing
- mechanical transmission
- loop control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a two loop control's car automatic braking system that backs a car, including ecu, ecu's input is connected with the fast sensor of ultrasonic wave detecting device, brake pressure sensor and wheel, and ecu's output is connected with two one -way solenoid valves, motor and mechanical transmission unit, and the motor is connected with the brake pump, and the brake pump has two braking wheel cylinders through keeping apart hinge joint, and one -way solenoid valve is still connected to the separator piston, and mechanical transmission unit is connected to one -way solenoid valve. The utility model discloses a two loop control systems act on hydraulic control return circuit and mechanical transmission return circuit with the emergency braking signal simultaneously, and the hydraulic control return circuit is as the major loop, and the mechanical transmission return circuit is as reserve return circuit. When the hydraulic control return circuit because trouble when becoming invalid, still can react in the mechanical brake return circuit, and to prevent accidental takes place. Ecu opening or closing according to braking instruction direct control solenoid valve, can shorten braking distance, makes the brake sensitiveer.
Description
Technical field
The utility model relates to field of vehicle safety, particularly relates to a kind of reversing automobile braking control system.
Background technology
At present, existing reversing automobile autobrake system, comprise Reverse Sensor, central process unit, self-actuating brake actuating device and self-actuating brake executive device, the mouth of Reverse Sensor is connected to the input end with described central process unit, the mouth of central process unit is connected to the input end of self-actuating brake actuating device, self-actuating brake actuating device drives the motion of self-actuating brake executive device, and self-actuating brake executive device is arranged at all sides of brake lever.Although this kind of reversing automobile autobrake system structure is simple, productive costs is lower, and reversing insensitivity is poor, and speed of response is slow; And only have a control loop in this system, if mechanical brake driving system breaks down, this dead-man's device will lose efficacy, and easily met accident.
Utility model content
For existing reversing autobrake system poor stability, speed of response is slow, the problem easily met accident, and the utility model provides the reversing automobile autobrake system that a kind of double loop controls.
The utility model adopts following technical scheme:
The reversing automobile autobrake system that a kind of double loop controls, comprise electronic control unit, the input end of described electronic control unit is connected with supersonic sounding device, brake-pressure sensor and wheel speed sensors, the mouth of electronic control unit is connected with two Unidirectional solenoid valves, electrical motor and mechanical transmission units, described electrical motor is connected with brake pump, brake pump is connected with two brake wheel cylinders by separator piston, described separator piston also connects Unidirectional solenoid valve, and described Unidirectional solenoid valve connects mechanical transmission unit.
Preferably, the mouth of described electronic control unit is also connected with reversing fluorescent screen, reversing brake indicator lamp, buzzer phone and high pressure accumulator.
Preferably, described mechanical transmission unit comprises brake actuating device, and described brake actuating device is connected with brake executive device, and described brake executive device is connected with mechanical braking device.
Preferably, described brake-pressure sensor is positioned on mechanical braking device.
Preferably, described mechanical braking device is made up of brake pedal and master brake cylinder.
Preferably, pressure regulator is provided with between described brake pump and separator piston.
The beneficial effect that the utility model has is:
Adopt double-loop control system, emergency brake signal is acted on simultaneously hydraulic control circuit and mechanical drive loop, hydraulic control circuit is as major loop, and mechanical drive loop is as back-up circuit.When hydraulic control circuit is due to malfunction and failure, still can work in traditional mechanical braking loop, prevent unexpected generation.
Quote PID controller, the real-time speed of a motor vehicle and preset vehicle speed are detected and forms closed loop control system, the steady state error of reduction system, makes speed can rapidly converge to predetermined speed track, improves the performance that system controls the dynamic response of the reversing speed of a motor vehicle and stable state.
Electronic control unit opens or closes according to the direct Controlling solenoid valve of braking instruction, can shorten stopping distance, eliminates the in-service time of traditional mechanical braking, makes brake sensitiveer, just can make emergency response to accident during reversing, effectively avoids the generation of accident.
Accompanying drawing explanation
Fig. 1 is the structural representation of the reversing automobile autobrake system that double loop controls.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is specifically described:
Composition graphs 1, the reversing automobile autobrake system that a kind of double loop controls, comprise electronic control unit 11, the input end of electronic control unit 11 is connected with supersonic sounding device 13, brake-pressure sensor 3 and wheel speed sensors 8, the mouth of electronic control unit 11 is connected with two Unidirectional solenoid valves 5, electrical motor 17 and mechanical transmission unit, and the mouth of electronic control unit 11 is also connected with reversing fluorescent screen 12, reversing brake indicator lamp 9, buzzer phone 10 and high pressure accumulator 4.Electrical motor 17 is connected with brake pump 16, and brake pump 16 is connected with two brake wheel cylinders 7 by separator piston 6, and described separator piston 6 also connects Unidirectional solenoid valve 5, and described Unidirectional solenoid valve 5 connects mechanical transmission unit.Described mechanical transmission unit comprises brake actuating device 14, and described brake actuating device 14 is connected with brake executive device 15, and described brake executive device 15 is connected with mechanical braking device.Brake-pressure sensor 3 is positioned on mechanical braking device, and mechanical braking device is made up of brake pedal 1 and master brake cylinder 2.Pressure regulator 18 is provided with between brake pump 16 and separator piston 6.
The reversing automobile autobrake system that a kind of double loop controls, when satisfied reversing self-actuating brake entry condition, electronic control unit 11 first receives the feedback signal of supersonic sounding device 13, brake-pressure sensor 3 and wheel speed sensors 8, then brake indicator lamp 9 of moveing backward is lighted, buzzer phone 10 is reported to the police, reversing fluorescent screen 12 starts, Unidirectional solenoid valve 5 is closed simultaneously, then actuating motor 17 controls brake pump 16 and runs, automatically distributed the brake-pressure of two brake wheel cylinders by brake-pressure controller 18, ensure vehicle steadily braking; When this hydraulic control circuit breaks down, electronic control unit 11 detects the mal signal of wheel speed sensors 8, control Unidirectional solenoid valve 5 to open, then electronic control unit 11 driving brake executive device 15, executive device 15 and brake pedal 1 are mechanically connected, and can realize the automatic brake functions in mechanical drive loop.
The utility model adopts double-loop control system, and emergency brake signal is acted on simultaneously hydraulic control circuit and mechanical drive loop, hydraulic control circuit is as major loop, and mechanical drive loop is as back-up circuit.When hydraulic control circuit is due to malfunction and failure, still can work in traditional mechanical braking loop, prevent unexpected generation.
Quote PID controller, the real-time speed of a motor vehicle and preset vehicle speed are detected and forms closed loop control system, the steady state error of reduction system, makes speed can rapidly converge to predetermined speed track, improves the performance that system controls the dynamic response of the reversing speed of a motor vehicle and stable state.
Electronic control unit opens or closes according to the direct Controlling solenoid valve of braking instruction, can shorten stopping distance, eliminates the in-service time of traditional mechanical braking, makes brake sensitiveer, just can make emergency response to accident during reversing, effectively avoids the generation of accident.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (6)
1. the reversing automobile autobrake system of a double loop control, it is characterized in that: comprise electronic control unit, the input end of described electronic control unit is connected with supersonic sounding device, brake-pressure sensor and wheel speed sensors, the mouth of electronic control unit is connected with two Unidirectional solenoid valves, electrical motor and mechanical transmission units, described electrical motor is connected with brake pump, brake pump is connected with two brake wheel cylinders by separator piston, described separator piston also connects Unidirectional solenoid valve, and described Unidirectional solenoid valve connects mechanical transmission unit.
2. the reversing automobile autobrake system of a kind of double loop control according to claim 1, is characterized in that: the mouth of described electronic control unit is also connected with reversing fluorescent screen, reversing brake indicator lamp, buzzer phone and high pressure accumulator.
3. the reversing automobile autobrake system of a kind of double loop control according to claim 1, it is characterized in that: described mechanical transmission unit comprises brake actuating device, described brake actuating device is connected with brake executive device, and described brake executive device is connected with mechanical braking device.
4. the reversing automobile autobrake system that a kind of double loop according to claim 1 or 3 controls, is characterized in that: described brake-pressure sensor is positioned on mechanical braking device.
5. the reversing automobile autobrake system of a kind of double loop control according to claim 3, is characterized in that: described mechanical braking device is made up of brake pedal and master brake cylinder.
6. the reversing automobile autobrake system of a kind of double loop control according to claim 1, is characterized in that: be provided with pressure regulator between described brake pump and separator piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434560.8U CN204775199U (en) | 2015-06-24 | 2015-06-24 | Two loop control's car automatic braking system that backs a car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434560.8U CN204775199U (en) | 2015-06-24 | 2015-06-24 | Two loop control's car automatic braking system that backs a car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204775199U true CN204775199U (en) | 2015-11-18 |
Family
ID=54515309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520434560.8U Expired - Fee Related CN204775199U (en) | 2015-06-24 | 2015-06-24 | Two loop control's car automatic braking system that backs a car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204775199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979190A (en) * | 2017-05-22 | 2017-07-25 | 武汉科技大学 | The experimental provision and method of a kind of low-frictional force hydraulic cylinder performance detection |
-
2015
- 2015-06-24 CN CN201520434560.8U patent/CN204775199U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979190A (en) * | 2017-05-22 | 2017-07-25 | 武汉科技大学 | The experimental provision and method of a kind of low-frictional force hydraulic cylinder performance detection |
| CN106979190B (en) * | 2017-05-22 | 2018-08-28 | 武汉科技大学 | A kind of experimental provision and method of low-frictional force hydraulic cylinder performance detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |