CN2932349Y - A vehicle-mounted motor vehicle braking performance tester - Google Patents
A vehicle-mounted motor vehicle braking performance tester Download PDFInfo
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- CN2932349Y CN2932349Y CN 200620017577 CN200620017577U CN2932349Y CN 2932349 Y CN2932349 Y CN 2932349Y CN 200620017577 CN200620017577 CN 200620017577 CN 200620017577 U CN200620017577 U CN 200620017577U CN 2932349 Y CN2932349 Y CN 2932349Y
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- vehicle
- braking
- microprocessor
- braking performance
- motor vehicle
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Abstract
The utility model discloses a vehicle-carrying braking performance detecting instrument of automobile, and is characterized in that comprises a stage braking deceleration transducer, a microprocessor contact-made and controlled by a sense switch, a terminating device providing a detecting result, a position transducer of a brake treadle and a prompt motor speed transducer. When detecting, adjust the running speed of the motor vehicle to a detecting specified value and switch on the working power of the microprocessor, then urgently tread the brake treadle, calculate, compare and process the input transducing information including a braking deceleration, a position and a change rate of the brake treadle and the motor speed with the memory data by the microprocessor, lastly send the processed electrical signal to the terminating device from the microprocessor, provide the detecting result of the braking deceleration by the terminating device and automatically decide the braking performance of an in-use vehicle being eligible or not. A driver can acquires possible potential safety hazard of the braking performance of the in-use vehicle through simple detecting operation, thereby greatly improving safety of the vehicle.
Description
Technical field
The utility model relates to the wheel braking Performance Detection to the retarded velocity sensitivity of motor vehicles, especially relates to a kind of vehicle-mounted machine motor vehicle braking performance detector.
Background technology
The braking procedure of motor vehicles generally is to force in brake pedal by the motorist, produces friction force between hoof by gearing, brake boost mechanism urges wheel drag and drum or pincers and dish, makes the rapid turn reducing of wheel, realizes deceleration or stagnation of movement.The ground damping force that is subjected to during car brakeing depends on the friction force of wheel drag and the friction force between tire and ground.Because the wearing and tearing day by day of brake-shoe, dish cause the decline of vehicle braking performances, therefore, vehicle supervision department is to carrying out enforceable regular detection at the braking ability with car, to guarantee in the safe operation with car.This enforceable regular detection at present mainly is by the test braking force equipment on the traffic safety detection line, and every half a year or 1 year carry out once, braking performance of vehicle are judged on the basis of the damping force that detects each wheel again.There is following shortcoming in this detection method: the one, only detect the damping force of each wheel, and do not detect the braking ability of car load, with the travelling brake of reality certain gap is arranged; The 2nd, detect by on the cylinder of rotation, the dead wheel of stopping being carried out damping force, the friction factor of cylinder is very big, makes the inhomogeneous lopsided wear of tire very big, reduces the serviceable life of tire, also can destroy tire dynamic and balance; The 3rd, sense cycle is long, can not in time find the motor vehicle brake performance depreciation, has potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of vehicle-mounted machine motor vehicle braking performance detector is provided.
Technical matters of the present utility model is solved by the following technical programs:
The characteristics of this vehicle-mounted machine motor vehicle braking performance detector are:
Comprise braking deceleration sensor that cascade connects, connect the microprocessor of working power and the terminal utensil of testing result is provided by detector switch control.
When detecting, with Vehicle Speed be adjusted into detect setting after, connect the microprocessor work power supply, promptly step on brake pedal again, by microprocessor the heat transfer agent of input is calculated, and is compared and treated with memory data in it; Electric signal after last microprocessor will be handled is delivered to the terminal utensil, provides the detection data of braking deceleration by the terminal utensil, and judge automatically at the braking ability of usefulness car whether qualified.
Technical matters of the present utility model is further solved by the following technical programs:
Also comprise brake pedal position sensor and instant vehicle speed sensor, described brake pedal position sensor links to each other with described microprocessor respectively with instant vehicle speed sensor.The respective sensor of installing on the existing car can be utilized,, installation can be replenished if these sensors are not installed on the vehicle.
Described brake pedal position sensor is to adopt the pedal position sensor of the potentiometer type of variable resistor Redundancy Design.Its inside is provided with two pots that are installed in the same rotating shaft, all the rotating shaft by pedal drives, two potentiometric output resistances are different, variable resistor directly reflects pedal position, when two resistances are corresponding with storing value respectively, can confirm the corner size of pedal, and accurately feed back the speed speed that pushes down on the pedal, improve the functional reliability of system.Described brake pedal position sensor is used to detect corner and the speed that brake pedal is stepped on by the motorist, with reflection motorist's braking consciousness and pedal force value.
Described instant vehicle speed sensor is and the matching used vehicle speed sensor of instant speedometer that is installed on the auto meter dish.Described instant vehicle speed sensor is used to indicate the instant speed of a motor vehicle when carrying out the braking deceleration check, and the selected instant speed of a motor vehicle should meet the setting of national standard.
Described braking deceleration sensor can utilize the braking deceleration sensor of installing on the existing car, if the braking deceleration sensor is not installed on the vehicle, can replenish installation.Be used for directly detecting the enough big braking deceleration that braking procedure promptly vertically produces in working direction, and be used for directly detecting the lateral excursion retarded velocity that horizontal sideslip that braking procedure may occur is produced, to grasp the braking characteristic of car load, the braking deceleration signal of sensor is delivered to microprocessor and handles after electronic amplification circuit amplifies.
Described braking deceleration sensor is the comprehensive braking deceleration sensor of ball type.
The comprehensive braking deceleration sensor of described ball type, comprise the spherical permanent magnet that hangs by elastic wire, the silicone oil of the spherical permanent magnet of submergence, and keep minimum gap with spherical permanent magnet below and can detect the Three-bearing Hall wafer of its longitudinal deceleration degree and teeter displacement.Silicone oil has stronger damping action, can prevent the formed interference of vibration in the motor vehicles driving process.
The comprehensive braking deceleration sensor of described ball type is provided with the output signal line of shielding outer cover and band shielding, can further improve the antijamming capability of sensor.
The comprehensive braking deceleration sensor of described ball type also below be provided with magnet base, can make things convenient for and firmly be adsorbed on suitable position in the car body, be beneficial to detect.
Described microprocessor is a microprocessor independently, be used to form free-standing vehicle-mounted braking performance detector, or wheel anti-lock braking system (the Anti-lock Braking System on existing car, or Anti-skid Braking System, abbreviation ABS) microprocessor that increases on the basis is used to form the vehicle-mounted braking performance detector of common type.Described microprocessor comprises braking deceleration, brake pedal position and rate of change to input, and the heat transfer agent of the speed of a motor vehicle is calculated, and compare and treat with memory data in it, again result is exported to the terminal utensil, provide testing result by the terminal utensil.
The data of described memory stores comprise the braking deceleration threshold value of demarcation, and the horizontal sideslip threshold value of vehicle body that allows during the automobile emergency of demarcating braking.
The demarcation threshold value of described memory stores is the setting among the GB7258-87 " motor vehicle security of operation technical conditions ".
Described terminal utensil comprises the display that is arranged on the automobile instrument panel, with the car diagnose connector.
Described display comprises that the retarded velocity detected value shows, and whether qualified demonstration of braking ability.The retarded velocity detected value is with m/s
2Unit representation; Whether braking ability is qualified respectively with the shinny expression of green, red high-brightness LED.The vehicle braked performance condition can be directly judged in demonstration by display.
Described display is mounted in the display on the automobile instrument panel, is used to produce the car prepackage.
Described display is the display that is mounted on the automobile instrument panel appropriate positions near, is used for reequiping with car.
Described power supply comprises power supply on vehicle and independent battery.This device power consumption is minimum, and is easy to use.
The beneficial effects of the utility model are convenient and practical, shorten sense cycle.The utility model directly installs the deceleration value of machines motor vehicle by motor vehicles self, to judge the braking ability at the car load of using car, the travelling brake situation of true reflection reality.As long as the motorist is by simple test operation, just can on the terminal utensil, know and use the current braking ability of car, in time find the potential safety hazard that the motor vehicle brake performance may exist, improve the security of vehicle significantly, needn't be as the mode of existing each wheel braking force of detection, on the cylinder of rotation, the dead wheel of stopping is carried out damping force and detect, in the serviceable life that can not reduce tire, can not destroy tire dynamic and balance.
Description of drawings
Below in conjunction with embodiment and contrast accompanying drawing the utility model is further specified.
Fig. 1 is the composition block scheme of the free-standing embodiment of the utility model pick-up unit;
Fig. 2 is the composition block scheme of the common type embodiment of the utility model pick-up unit;
Fig. 3 is that the comprehensive retarded velocity sensor of the ball type of the utility model pick-up unit is formed block scheme.
Embodiment
Embodiment one: a kind of free-standing vehicle-mounted machine motor vehicle braking performance detector
Free-standing vehicle-mounted machine motor vehicle braking performance detector as shown in Figure 1, comprise the comprehensive braking deceleration sensor 1 of ball type that cascade connects, connect the microprocessor 3 of working powers and the terminal display 4 of testing result is provided by detector switch 2 controls, and power supply B, also comprise instant vehicle speed sensor 5 and brake pedal position sensor 6.
The comprehensive braking deceleration sensor 1 of ball type as shown in Figure 3, comprise the silicone oil 9 of the spherical permanent magnet 8 of spherical permanent magnet 8, submergence that hangs by elastic wire 7, keep minimum gap and can detect the Three-bearing Hall wafer 10 of its longitudinal deceleration degree and teeter displacement with spherical permanent magnet 8 belows, and shielding outer cover 11.
Microprocessor 3 is microprocessors independently, adopts STC12C5410AD series chip microprocessor chip, and this chip is 8051 enhancement mode kernel, belong to 1T single clock/machine cycle, extra small packing has 8 tunnel 10 A/D conversions at a high speed, 512 byte RAM data-carrier stores, band EEPROM function, antijamming capability is superpower, and arithmetic speed is higher, and frequency of operation reaches 35MHz, its output only is used to show vehicle braking performances, and power consumption is extremely low.
Terminal display 4 is installed on the automobile instrument panel, comprises that the retarded velocity detected value shows, and whether qualified demonstration of braking ability.The retarded velocity detected value is with m/s
2Unit representation; Whether braking ability is qualified respectively with the shinny expression of green, red high-brightness LED.The vehicle braked performance condition can be directly judged in demonstration by terminal display 4.
Instant vehicle speed sensor 5 is and the matching used vehicle speed sensor of instant speedometer that is installed on the automobile instrument panel.
Brake pedal position sensor 6 adopts the pedal position sensor of the potentiometer type of variable resistor Redundancy Design.
The course of work of the utility model device is as follows:
Need be the motorist to when the braking ability with car detects, driving empty wagons alone travels at smooth, strong, cleaning, dry cement or bituminous pavement with the 20km/h or the 30km/h travel speed of GB7258-87 " motor vehicle security of operation technical conditions " regulation, with the detector switch closure, connect the microprocessor work power supply, promptly step on brake pedal, by microprocessor input comprised braking deceleration, brake pedal position and rate of change, and the heat transfer agent of the speed of a motor vehicle carries out juice and calculates, and compares and treats with memory data in it; Electric signal after will being handled by microprocessor again is delivered to the terminal utensil, provides the detection data of braking deceleration by the terminal utensil, and judges automatically whether the braking ability when using car in the travel speed of selecting is qualified, grasps the vehicle braked performance at any time.
Embodiment two: a kind of common type vehicle-mounted machine motor vehicle braking performance detector
Common type vehicle-mounted machine motor vehicle braking performance detector as shown in Figure 2, comprise the comprehensive braking deceleration sensor 1 of ball type that cascade connects, connect the microprocessor 3 of working powers and the terminal display 4 of testing result is provided by detector switch 2 controls, and power supply B, also comprise instant vehicle speed sensor 5 and brake pedal position sensor 6.The ECU adapted of multinomial functions such as anti-lock control, realization safeguard protection and autodiagnosis when the original microprocessor in the wheel braking slip control system on microprocessor 3 and the car can be handled wheel braking; original vehicle speed signal and brake pedal position signal input increase input brake retarded velocity transducing signal again and carry out the braking ability detection.Other component parts and the course of work be embodiment one roughly the same.
Microprocessor 3 is microprocessors that the braking ability transducing signal to input that increases on the ABS system-based on the existing car carries out the computing function, adopt STC89C51 chip microprocessor chip, this chip is able to programme, do not need special programmable device or emulator, band house dog hardware capability, antijamming capability is strong, the arithmetic speed height, vibration resistance, wide voltage, wide operating temperature range, frequency of operation can reach 80MHz, its output only is used to show vehicle braking performances, and power consumption is extremely low, and the exemplary operation electric current is 7mA.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (10)
1. vehicle-mounted machine motor vehicle braking performance detector is characterized in that:
Comprise braking deceleration sensor that cascade connects, connect the microprocessor of working power and the terminal utensil of testing result is provided by detector switch control.
2. according to the described vehicle-mounted machine motor vehicle of claim 1 braking performance detector, it is characterized in that:
Also comprise brake pedal position sensor and instant vehicle speed sensor, described brake pedal position sensor links to each other with described microprocessor respectively with instant vehicle speed sensor.
3. according to claim 1 or 2 described vehicle-mounted machine motor vehicle braking performance detectors, it is characterized in that:
Described brake pedal position sensor is to adopt the pedal position sensor of the potentiometer type of variable resistor Redundancy Design.
4. according to the described vehicle-mounted machine motor vehicle of claim 3 braking performance detector, it is characterized in that:
Described instant vehicle speed sensor is and the matching used vehicle speed sensor of instant speedometer that is installed on the auto meter dish.
5. according to the described vehicle-mounted machine motor vehicle of claim 4 braking performance detector, it is characterized in that:
Described braking deceleration sensor is the comprehensive braking deceleration sensor of ball type.
6. according to the described vehicle-mounted machine motor vehicle of claim 5 braking performance detector, it is characterized in that:
The comprehensive braking deceleration sensor of described ball type, comprise the spherical permanent magnet that hangs by elastic wire, the silicone oil of the spherical permanent magnet of submergence, and keep minimum gap with spherical permanent magnet below and can detect the Three-bearing Hall wafer of its longitudinal deceleration degree and teeter displacement.
7. according to the described vehicle-mounted machine motor vehicle of claim 6 braking performance detector, it is characterized in that:
The comprehensive braking deceleration sensor of described ball type is provided with the output signal line of shielding outer cover and band shielding.
8. according to claim 6 or 7 described vehicle-mounted machine motor vehicle braking performance detectors, it is characterized in that:
The comprehensive braking deceleration sensor of described ball type also below be provided with magnet base.
9. according to the described vehicle-mounted machine motor vehicle of claim 8 braking performance detector, it is characterized in that:
Described microprocessor is a microprocessor independently, or the microprocessor that increases on the wheel anti-lock braking system basis on the existing car.
10. according to the described vehicle-mounted machine motor vehicle of claim 8 braking performance detector, it is characterized in that:
Described terminal utensil comprises the display that is arranged on the automobile instrument panel, with the car diagnose connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017577 CN2932349Y (en) | 2006-06-26 | 2006-06-26 | A vehicle-mounted motor vehicle braking performance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017577 CN2932349Y (en) | 2006-06-26 | 2006-06-26 | A vehicle-mounted motor vehicle braking performance tester |
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| Publication Number | Publication Date |
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| CN2932349Y true CN2932349Y (en) | 2007-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620017577 Expired - Fee Related CN2932349Y (en) | 2006-06-26 | 2006-06-26 | A vehicle-mounted motor vehicle braking performance tester |
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| CN (1) | CN2932349Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625459A (en) * | 2012-08-29 | 2014-03-12 | 交通运输部公路科学研究所 | Automobile service braking efficiency dynamic monitoring and alarming system |
| CN106184165A (en) * | 2016-08-05 | 2016-12-07 | 北京新能源汽车股份有限公司 | Brake control method, device and automobile |
| CN106402214A (en) * | 2016-08-15 | 2017-02-15 | 北京新能源汽车股份有限公司 | Detection system and detection method for clearance self-adjusting device for brake |
| CN109839242A (en) * | 2017-11-29 | 2019-06-04 | 东洋橡胶工业株式会社 | Braking ability evaluation method and braking ability evaluating apparatus |
| CN110217333A (en) * | 2018-03-01 | 2019-09-10 | 博世（上海）智能科技有限公司 | Handle brake System Performance Analysis system, method and reminding method |
-
2006
- 2006-06-26 CN CN 200620017577 patent/CN2932349Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625459A (en) * | 2012-08-29 | 2014-03-12 | 交通运输部公路科学研究所 | Automobile service braking efficiency dynamic monitoring and alarming system |
| CN103625459B (en) * | 2012-08-29 | 2018-03-16 | 交通运输部公路科学研究所 | The dynamic monitoring of running brake efficiency and warning system |
| CN106184165A (en) * | 2016-08-05 | 2016-12-07 | 北京新能源汽车股份有限公司 | Brake control method, device and automobile |
| CN106402214A (en) * | 2016-08-15 | 2017-02-15 | 北京新能源汽车股份有限公司 | Detection system and detection method for clearance self-adjusting device for brake |
| CN109839242A (en) * | 2017-11-29 | 2019-06-04 | 东洋橡胶工业株式会社 | Braking ability evaluation method and braking ability evaluating apparatus |
| CN109839242B (en) * | 2017-11-29 | 2021-02-19 | 东洋橡胶工业株式会社 | Brake performance evaluation method and brake performance evaluation device |
| CN110217333A (en) * | 2018-03-01 | 2019-09-10 | 博世（上海）智能科技有限公司 | Handle brake System Performance Analysis system, method and reminding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 |