CN104931186A - Vehicle dynamic braking force measuring device - Google Patents
Vehicle dynamic braking force measuring device Download PDFInfo
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- CN104931186A CN104931186A CN201510338745.3A CN201510338745A CN104931186A CN 104931186 A CN104931186 A CN 104931186A CN 201510338745 A CN201510338745 A CN 201510338745A CN 104931186 A CN104931186 A CN 104931186A
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Abstract
The invention relates to a vehicle dynamic braking force measuring device. The device comprises a moving part which is arranged on a wheel and is used for dynamically acquiring braking force data in a vehicle braking process, and a vehicle-mounted part which is wirelessly connected with the moving part and is used for receiving and displaying the braking force data in real time, drawing a process curve, and further calculating braking data. Compared with the prior art, the vehicle dynamic braking force measuring device provided by the invention has the advantages of fast response, high precision and the like.
Description
Technical field
The present invention relates to a kind of vehicle measurement mechanism, especially relate to a kind of vehicle dynamic braking force measuring apparatus.
Background technology
At present for detecting vehicle braking force device (abbreviation brake platform), because manufacturer is different, the circuit used is also different, the data obtained often differ greatly, this main cause only does static demarcating to brake platform, lacks the equipment and pick-up unit that can be used as the demarcation of dynamic system power.And the braking procedure of vehicle is a dynamic afterburner process, the static loading data of brake platform are cannot exact expression dynamic load data, only have the data of detection of dynamic could reflect the braking ability of vehicle more accurately, therefore vehicle dynamic damping force measuring technique becomes the technical matters being instantly badly in need of solving.
Summary of the invention
Object of the present invention is exactly provide a kind of vehicle dynamic braking force measuring apparatus fast, precision is high that responds to overcome defect that above-mentioned prior art exists, directly gather from the spoke stress surface of wheel, embody the crown of wheel and the authenticity of ground friction force data when braking and react.
Object of the present invention can be achieved through the following technical solutions:
A kind of vehicle dynamic braking force measuring apparatus, is characterized in that, comprising:
Motion parts, is arranged on wheel, for the damping force data in dynamic acquisition car brakeing process;
Vehicle-mounted part, with motion parts wireless connections, for real-time reception, display damping force data, and drawing process curve, and calculate braking-distance figures further.
Described motion parts is provided with two or four, is arranged on respectively on two, left and right or left-right and front-back four wheels, by a vehicle-mounted part, two that receive or four wheel braking force real time datas is shown simultaneously.
Described vehicle-mounted part is as main frame, and motion parts, as from machine, sends out broadcasting command with main frame, carrys out order accordingly from machine response mode to realize data transmission.
Each motion parts comprises:
Force cell, is arranged on wheel, for measuring tangential force when wheel runs;
Prime amplifier, is connected with survey sensor, for amplifying and filtering process the signal of force cell collection;
First embedded controller, is connected with prime amplifier, for the data after prime amplifier process being encoded;
First wireless data transfer module, is connected with the first embedded controller, for the data after coding being sent;
First dual-mode antenna, is connected with the first wireless data transfer module and vehicle-mounted part respectively, for sending the data to vehicle-mounted part.
Described vehicle-mounted part comprises:
Second transmitting-receiving electric wire, with the first dual-mode antenna wireless connections of motion parts;
Second wireless data transfer module, receives and dispatches electric wire be connected, for the data after received code with second;
Second embedded controller, is connected with the second wireless data transfer module, for receive decoding data and process;
Light-emitting diode display, is connected with the second embedded controller, for showing damping force data in real time.
Described vehicle-mounted part also comprises displaying contents selection key.
In car brakeing implementation process, the second embedded controller receives the data measured in real time by the second wireless receiving module, gathers the time of maximum braking force and generation, the maximal value of the right and left damping force difference appearance and the time of generation, and shows.
Described force cell is arranged on the outer end of wheel rim flange ring, and is close to the both sides of wheel rim flange ring support, for differentiating turning to of wheel, increases sensitivity and the precision of sampled signal.
Described force cell rotates together with wheel, and the data monitored are transmitted by the first wireless sending module; Described motion parts also comprises the lithium battery for powering; Described motion parts entirety adopts epoxy casting.
Described vehicle-mounted part receives data to left and right two-wheeled and makes dimension conversion, numerical precision demarcation, non-linear and zero compensation.
Compared with prior art, the present invention has the following advantages:
1) the present invention is directed to the kinetic measurement in car brakeing process, because Direct Sampling is on enforcement brake wheel, accurately can reflect stressing conditions during car brakeing; Meanwhile, complete braking procedure dynamic data and curve is recorded; From wheel, directly obtain stressing conditions, obtain data have very high precision and dynamic response fast.
2) the present invention uses embedded computer and wireless communication technique, the wheel run up damping force data in enforcement braking procedure are gathered, transmitted, can the damping force of two or four wheel be gathered or be measured simultaneously, come real-time reception, display damping force data and recording process curve by vehicle-mounted instrument, and automatically calculate the critical data of braking.
3) the present invention directly gathers braking action point, obtain data precision high, dynamic response time is fast, truly can reflect the stressing conditions in braking procedure, can as the verification of the detection data to current conventional reaction type brake platform, the verification of dynamic system power, FDDM; Also the research and development to vehicle braking system are contributed to, the force-bearing situation analysis in braking procedure.
Accompanying drawing explanation
Fig. 1 is the structural representation of telemechanical part of the present invention;
Fig. 2 is the structural representation of the vehicle-mounted part of the present invention;
Fig. 3 is the scheme of installation of force cell of the present invention.
1 be wherein force cell, 2 for prime amplifier, 3 be the first embedded controller, 4, be the first wireless data transfer module, 5 be the first dual-mode antenna, 6 be the second transmitting-receiving electric wire, 7 be the second wireless data transfer module, 8 be the second embedded controller, 9 be displaying contents selection key, 10 be light-emitting diode display.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
Vehicle dynamic braking force measuring apparatus of the present invention is a tangentially stressed device directly obtaining wheel in whole car brakeing process, its meaning is accurately grasp the data forming friction force between wheel and ground in braking procedure, and the forming process of braking friction.Spoke due to wheel is the parts of transmission of drive force and damping force, and sensor is directly installed on the side of spoke, the most directly and can promptly react the change exporting damping force.Implement damping force process often with regard to hundreds of millisecond to several seconds time, period is gathered by continuous print damping force, thus, had the braking form of process of establishing, left and right wheels difference, the maximum value data that produces damping force and directly and accurately measured, these are all the critical datas passing judgment on braking system quality.
Due to above-mentioned, the damping force data response that the present invention detects is fast, and precision is high, directly gathers from the spoke stress surface of wheel, embodies the crown of wheel and the authenticity of ground friction force data when braking and reacts.Therefore, may be used for performance analysis and the scientific research of car brakeing process, also can make Data correction as high-precision meter to some conventional brake force test desks.
Vehicle dynamic braking force measuring apparatus of the present invention, comprising:
Motion parts, is arranged on wheel, for the damping force data in dynamic acquisition car brakeing process;
Vehicle-mounted part, is connected with motion parts, for real-time reception, display damping force data, and drawing process curve, and calculate braking-distance figures further.
Described motion parts is provided with two or four, is arranged on respectively on two, left and right or left-right and front-back four wheels, by a vehicle-mounted part, two that receive or four wheel braking force real time datas is shown simultaneously.Described vehicle-mounted part is as main frame, and motion parts, as from machine, sends out broadcasting command with main frame, carrys out order accordingly from machine response mode to realize data transmission, effectively to avoid the transmission data-signal conflict when Wireless Data Transmission and to receive dislocation.
As shown in Figure 1, each motion parts comprises:
Force cell 1, is arranged on wheel, for measuring tangential force when wheel runs;
Prime amplifier 2, is connected with survey sensor 1, for amplifying and filtering process the signal of force cell collection;
First embedded controller 3, is connected with prime amplifier 2, for the data after prime amplifier process being encoded;
First wireless data transfer module 4, is connected with the first embedded controller 3, for the data after coding being sent;
First dual-mode antenna 5, is connected with the first wireless data transfer module 4 and vehicle-mounted part respectively, for sending the data to vehicle-mounted part.
As shown in Figure 2, described vehicle-mounted part comprises:
Second transmitting-receiving electric wire 6, with the first dual-mode antenna 5 wireless connections of motion parts;
Second wireless data transfer module 7, receives and dispatches electric wire 6 be connected, for the data after received code with second;
Second embedded controller 8, is connected with the second wireless data transfer module 7, for receive decoding data and process;
Displaying contents selection key 9, is connected with the second embedded controller 8;
Light-emitting diode display 10, is connected with the second embedded controller 8, for showing damping force data in real time.
Because this device is that a kind of measurement damping force precision is high, accurately can react the dynamic response in braking procedure, make the content of output can study foundation as other UC data bases or car brakeing.In car brakeing implementation process, the second embedded controller receives the data measured in real time by the second wireless receiving module, gathers the time of maximum braking force and generation, the maximal value of the right and left damping force difference appearance and the time of generation, and shows.
Described force cell is arranged on the outer end of wheel rim flange ring, and is close to the both sides of wheel rim flange ring support, for differentiating turning to of wheel, increases sensitivity and the precision of sampled signal.
Described force cell rotates together with wheel, and the data monitored are transmitted by the first wireless sending module; Described motion parts also comprises the lithium battery for powering; Described motion parts entirety adopts epoxy casting.
Described vehicle-mounted part receives data to left and right two-wheeled and makes dimension conversion, numerical precision demarcation, non-linear and zero compensation.
Claims (10)
1. a vehicle dynamic braking force measuring apparatus, is characterized in that, comprising:
Motion parts, is arranged on wheel, for the damping force data in dynamic acquisition car brakeing process;
Vehicle-mounted part, with motion parts wireless connections, for real-time reception, display damping force data, and drawing process curve, and calculate braking-distance figures further.
2. a kind of vehicle dynamic braking force measuring apparatus according to claim 1, it is characterized in that, described motion parts is provided with two or four, be arranged on respectively on two, left and right or left-right and front-back four wheels, by a vehicle-mounted part, two that receive or four wheel braking force real time datas shown simultaneously.
3. a kind of vehicle dynamic braking force measuring apparatus according to claim 1, is characterized in that, described vehicle-mounted part is as main frame, and motion parts, as from machine, sends out broadcasting command with main frame, carrys out order accordingly from machine response mode to realize data transmission.
4. a kind of vehicle dynamic braking force measuring apparatus according to claim 1, it is characterized in that, each motion parts comprises:
Force cell, is arranged on wheel, for measuring tangential force when wheel runs;
Prime amplifier, is connected with survey sensor, for amplifying and filtering process the signal of force cell collection;
First embedded controller, is connected with prime amplifier, for the data after prime amplifier process being encoded;
First wireless data transfer module, is connected with the first embedded controller, for the data after coding being sent;
First dual-mode antenna, is connected with the first wireless data transfer module and vehicle-mounted part respectively, for sending the data to vehicle-mounted part.
5. a kind of vehicle dynamic braking force measuring apparatus according to claim 4, is characterized in that, described vehicle-mounted part comprises:
Second transmitting-receiving electric wire, with the first dual-mode antenna wireless connections of motion parts;
Second wireless data transfer module, receives and dispatches electric wire be connected, for the data after received code with second;
Second embedded controller, is connected with the second wireless data transfer module, for receive decoding data and process;
Light-emitting diode display, is connected with the second embedded controller, for showing damping force data in real time.
6. a kind of vehicle dynamic braking force measuring apparatus according to claim 5, is characterized in that, described vehicle-mounted part also comprises displaying contents selection key.
7. a kind of vehicle dynamic braking force measuring apparatus according to claim 5, it is characterized in that, in car brakeing implementation process, second embedded controller receives the data measured in real time by the second wireless receiving module, gather the time of maximum braking force and generation, the maximal value of the right and left damping force difference appearance and the time of generation, and show.
8. a kind of vehicle dynamic braking force measuring apparatus according to claim 4, it is characterized in that, described force cell is arranged on the outer end of wheel rim flange ring, and is close to the both sides of wheel rim flange ring support, for differentiating turning to of wheel, increase sensitivity and the precision of sampled signal.
9. a kind of vehicle dynamic braking force measuring apparatus according to claim 4, it is characterized in that, described force cell rotates together with wheel, and the data monitored are transmitted by the first wireless sending module; Described motion parts also comprises the lithium battery for powering; Described motion parts entirety adopts epoxy casting.
10. a kind of vehicle dynamic braking force measuring apparatus according to claim 4, is characterized in that, described vehicle-mounted part receives data to left and right two-wheeled and makes dimension conversion, numerical precision demarcation, non-linear and zero compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338745.3A CN104931186A (en) | 2015-06-17 | 2015-06-17 | Vehicle dynamic braking force measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510338745.3A CN104931186A (en) | 2015-06-17 | 2015-06-17 | Vehicle dynamic braking force measuring device |
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| CN104931186A true CN104931186A (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060209A (en) * | 2018-06-29 | 2018-12-21 | 南京汽车集团有限公司 | Measuring device and measurement method for sedan braking system dynamic brake force moment |
| CN113324762A (en) * | 2021-04-23 | 2021-08-31 | 中国北方车辆研究所 | System and method for testing real vehicle power load of power device of tracked vehicle |
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| US5305636A (en) * | 1993-02-12 | 1994-04-26 | Hunter Engineering Company | Plate brake tester and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060209A (en) * | 2018-06-29 | 2018-12-21 | 南京汽车集团有限公司 | Measuring device and measurement method for sedan braking system dynamic brake force moment |
| CN113324762A (en) * | 2021-04-23 | 2021-08-31 | 中国北方车辆研究所 | System and method for testing real vehicle power load of power device of tracked vehicle |
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Application publication date: 20150923 |