CN203479535U - Automobile starting and braking performance testing device - Google Patents
Automobile starting and braking performance testing device Download PDFInfo
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- CN203479535U CN203479535U CN201320312873.7U CN201320312873U CN203479535U CN 203479535 U CN203479535 U CN 203479535U CN 201320312873 U CN201320312873 U CN 201320312873U CN 203479535 U CN203479535 U CN 203479535U
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- 238000012360 testing method Methods 0.000 title claims abstract description 104
- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims description 16
- 239000007858 starting material Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
An automobile starting and braking performance testing device comprises a testing unit and a reflection mirror, and the testing unit comprises a testing support, a controller, laser transmitting tubes, laser receiving tubes and a communication module. The testing support and the reflection mirror are respectively located on two sides of a bicycle riding route and parallel with each other. The laser transmitting tubes and the laser receiving tubes are distributed on the testing support at intervals, and distances between adjacent laser transmitting tubes and laser receiving tubes are equal. Transmitting point light sources of the laser transmitting tubes are received by the laser receiving tubes after being reflected by the reflection mirror. The laser transmitting tubes have following transmitting angles: a second laser receiving tube receives laser emitted by a first laser transmitting tube, and a third laser receiving tube receives laser emitted by the second laser transmitting tube. The laser receiving tubes and the communication module are connected with the controller. The automobile starting and braking performance testing device is simple in structure, convenient to install and high in control precision.
Description
Technical field
The utility model relates to a kind of vehicle braking performances field tests, especially a kind of vehicle launch braking performance tester.
Background technology
A key index to bicycle and the detection of electric bicycle security performance is test bicycle brake time and distance.During actual use at present, the mode of employing is to brake moment, utilizes bicycle brake driving powder shotgun at the underground vestige of stamping, and as the starting point of braking, after wait parking, uses tape measure braking distance.The method road pavement has certain destructiveness, has certain danger during use, although can measure braking distance, accurately measure braking time and must be used in conjunction with other surveying instrument.
Bicycle brake spacing is also relevant with the initial velocity in brake time, the impact of speed in the time of must considering to brake when therefore analyzing bicycle brake performance, and vehicle speed measuring system has radar Doppler to test the speed at present, GPS tests the speed, video frequency speed-measuring, inductive coil test the speed etc.Radar Doppler and the GPS application of testing the speed aspect measuring vehicle speed is very extensive, but larger for the slower measurand test error of the movement velocitys such as bicycle.Video frequency speed-measuring capturing system, it is mainly used in investigation, and its analytic process is comparatively complicated.Inductive coil test macro, the circle of need to sunkening cord under road surface that tests the speed, construction and installation are complicated, are not easy to promote.Adopting photoelectric technology to realize and testing the speed is also in one, to use commonplace method, at two pairs of laser of placement separated by a distance or infrared or general visible transmitting and receiving trap, by measuring measured object by the time of two pairs of photoelectric tubes, then according to the distance of two photoelectric tubes, calculate by the speed of this point, because the higher required photoelectric tube of precision of test is just more, because proving installation uses in the wild, measuring distance is long and test site existence is uncertain, is not suitable for proving installation to make an integrated model.LASER Discharge Tube and the various meeting of receiving tube power valve make wiring, power supply complexity, are difficult for installation, adjusting, transfer and data and transmit.
Summary of the invention
For overcome existing bicycle starting braking performance test technology complex structure, trouble, deficiency that control accuracy is lower are installed, the utility model provides a kind of simplified structure, the vehicle launch braking performance tester that easy for installation, control accuracy is higher.
The utility model solves the technical scheme that its technical matters adopts:
A kind of vehicle launch braking performance tester, described measurement mechanism comprises test cell and catoptron, described test cell comprises test bracket, controller, LASER Discharge Tube, laser pick-off pipe and communication module, described test bracket and catoptron are not positioned at the both sides of bicycle traffic route, and described test bracket is parallel with catoptron;
Described LASER Discharge Tube and laser pick-off pipe interval are arranged on described test bracket, between described adjacent LASER Discharge Tube between two and laser pick-off pipe, spacing equates, direction from left to right, arrange successively first LASER Discharge Tube, first laser pick-off pipe, n position LASER Discharge Tube, n position laser pick-off pipe, n is natural number, and n >=3, the launching site light source of described LASER Discharge Tube is received by laser pick-off pipe after catoptron reflection, described LASER Discharge Tube has following emission angle: described second laser pick-off pipe receives the laser of first LASER Discharge Tube transmitting, described the 3rd laser pick-off pipe receives the laser of second LASER Discharge Tube transmitting, described n position laser pick-off pipe receives the laser of n-1 position LASER Discharge Tube transmitting, described laser pick-off pipe, described communication module is all connected with described controller,
Controller is usingd the signal of each laser pick-off pipe and saltus step is occurred for the first time as timing signal recording clock value, and laser parallel and the distance of every group of LASER Discharge Tube transmitting are fixing; Described proving installation also comprises braking quality test module, and described braking quality test module comprises:
In order to take the time as horizontal ordinate according to the data that receive, displacement is ordinate, draws out the displacement-time curve of vehicle to be measured and the Drawing of Curve unit of speed-time curve;
In order to Negotiation speed-time curve, obtain bicycle brake point and initial velocity, then can calculate according to displacement-time curve the braking quality computing unit of setting the braking distance value of bicycle under initial velocity.
Further, described proving installation also comprises starter, and described starter is positioned at the end of described test bracket, and described starter is connected with described controller.
Further, described 2
mindividual LASER Discharge Tube and 2
mindividual laser pick-off pipe forms a test cell, and m is natural number, and m>=3, and described proving installation comprises at least two test cells that are arranged side by side.
Described laser pick-off pipe is connected with described communication module, and described communication module is connected with master controller, and described master controller is connected to computing machine by USB or RS-232 interface, and described test cell is connected with supplying cell.
Described communication module is Zigbee wireless communication module.Certainly, also can select other communication modes.
Described supplying cell is dismountable rechargeable battery or dry cell.
The beneficial effects of the utility model are mainly manifested in: simplified structure, easy for installation, control accuracy is higher.
Accompanying drawing explanation
Fig. 1 is proving installation basic structure schematic diagram.
Fig. 2 is test cell schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
See figures.1.and.2, a kind of vehicle launch braking performance tester, described measurement mechanism comprises test cell and catoptron, described test cell comprises test bracket, controller, LASER Discharge Tube, laser pick-off pipe and communication module, described test bracket and catoptron are not positioned at the both sides of bicycle traffic route, and described test bracket is parallel with catoptron;
Described LASER Discharge Tube and laser pick-off pipe interval are arranged on described test bracket, between described adjacent LASER Discharge Tube between two and laser pick-off pipe, spacing equates, direction from left to right, arrange successively first LASER Discharge Tube, first laser pick-off pipe, n position LASER Discharge Tube, n position laser pick-off pipe, n is natural number, and n >=3, the launching site light source of described LASER Discharge Tube is received by laser pick-off pipe after catoptron reflection, described LASER Discharge Tube has following emission angle: described second laser pick-off pipe receives the laser of first LASER Discharge Tube transmitting, described the 3rd laser pick-off pipe receives the laser of second LASER Discharge Tube transmitting, described n position laser pick-off pipe receives the laser of n-1 position LASER Discharge Tube transmitting, described laser pick-off pipe, described communication module is all connected with described controller.
Further, described proving installation also comprises starter, and described starter is positioned at the end of described test bracket, and described starter is connected with described controller.
Described vehicle to be measured enters before test zone, by starter conducting first LASER Discharge Tube in test cell foremost, described second laser pick-off pipe receives signal, described vehicle to be measured enters after test zone when front end blocks the light beam between first LASER Discharge Tube and catoptron, described the second laser pick-off pipe signal generation saltus step, described singlechip controller records elapsed time clock value, now by singlechip controller conducting second LASER Discharge Tube, first LASER Discharge Tube closed, three LASER Discharge Tube of conducting when described the 3rd laser pick-off pipe generation saltus step, by that analogy, first laser pick-off pipe signal generation saltus step of next test cell when the laser of last laser reflection pipe transmitting of test cell is blocked, now by first LASER Discharge Tube of the next test cell of singlechip controller conducting,
Described singlechip controller is all usingd the signal of each laser pick-off pipe and saltus step is occurred for the first time as timing signal recording clock value.Described test cell sends data to master controller by communication module after having tested, described each test cell separate clocking, and when described test cell is installed, without sequencing, described master controller sorted according to the time of data receiver.
Laser parallel and the distance of described every group of LASER Discharge Tube transmitting are fixing, described computing machine be take the time as horizontal ordinate according to the data that receive, displacement is ordinate, draw out displacement-time curve and the speed-time curve of vehicle to be measured, Negotiation speed-time curve can accurately obtain bicycle brake point and initial velocity, according to displacement-time curve, can calculate again the braking distance value of bicycle under certain initial velocity, in like manner, can obtain vehicle is zero time and distance value while accelerating to rated speed from speed.
The measurement mechanism of the present embodiment is by a plurality of test cell A
1～A
nform described test cell A with catoptron B
1～A
nbe not positioned at the both sides of bicycle traffic route, described test cell A with catoptron B
1～A
nline spread and parallel with catoptron B, described single test cell is comprised of singlechip controller, LASER Discharge Tube, laser pick-off pipe, communication module and aluminium section bar.
With test cell A
1and A
2for example, described test cell A
1be arranged in elongated aluminium section bar 1 described test cell A
1interior a plurality of LASER Discharge Tube (A
1-1 to A
1-8) and laser pick-off pipe (A
1'-1 is to A
1'-8) interval layout and spacing equate.Described LASER Discharge Tube launching site light source at an angle is received by laser pick-off pipe after catoptron B reflection, described second laser pick-off pipe A
1'-2 receive first LASER Discharge Tube A
1the laser of-1 transmitting, described the 3rd laser pick-off pipe A
1'-3 receive second LASER Discharge Tube A
1the laser of-2 transmittings, last LASER Discharge Tube A in a described test cell
1the light source of-8 transmittings is by next test cell A
2first laser pick-off pipe A'
2-1 receives.Described test cell A
1by communication module, test data is sent to master controller, described master controller is connected to computing machine by the data that receive.
Described vehicle to be measured enters before test zone, by starter conducting test cell A foremost
1first interior LASER Discharge Tube A
1-1, described second laser pick-off pipe A
1'-2 receive signal, and after described vehicle to be measured enters test zone, front end blocks first LASER Discharge Tube A
1-1 and catoptron between light beam time, described the second laser pick-off pipe A
1'-2 signal generation saltus step, described singlechip controller records elapsed time clock value, now by singlechip controller conducting second LASER Discharge Tube A
1-2, first LASER Discharge Tube A
1-1 closes, as described the 3rd laser pick-off pipe A
1the three LASER Discharge Tube A of conducting when saltus step occurs in '-3
1-3, by that analogy, as test cell A
1last laser reflection pipe A
1next test cell A when the laser of-8 transmittings is blocked
2first laser pick-off pipe A'
2-1 signal generation saltus step, now by test cell A
2interior first LASER Discharge Tube A of singlechip controller conducting
2-1, described test cell A
1after having tested, by communication module, send data to master controller, described each test cell separate clocking, when described test cell is installed, without sequencing, described master controller sorted according to the time of data receiver.
Laser parallel and the distance of described every group of LASER Discharge Tube transmitting are fixed as L, described computing machine be take the time as horizontal ordinate according to the data that receive, displacement is ordinate, draw out displacement-time curve and the speed-time curve of vehicle to be measured, Negotiation speed-time curve can accurately obtain bicycle brake point and initial velocity, according to displacement-time curve, can calculate again the braking distance value of bicycle under certain initial velocity, in like manner, can obtain vehicle is zero time and distance value while accelerating to rated speed from speed.
Further, described communication module is Zigbee wireless communication module, and described communication module adopts single work communication modes.Described each test cell adopts battery independently-powered, and described supplying cell adopts dismountable lithium battery or the power supply of common rechargeable battery, also can adopt general dry battery power supply.
In the present embodiment, because measuring distance is longer, consider the problems such as LASER Discharge Tube and receiving tube power supply, installation, wiring, the utility model adopts a plurality of test cells to carry out the mode of permutation and combination.In each test cell, comprise a plurality of LASER Discharge Tube and receiving tube, the light of LASER Discharge Tube transmitting reflects to laser pick-off pipe by catoptron, and adjusting, easy for installation has solved correlation LASER Discharge Tube and receiver pope the difficult problem of adjusting is installed.
Because whole system need to be used in the wild, powerup issue is a subject matter, so the utility model do not adopt common electric main power supply plan, but adopts powered battery scheme.Test cell is independently-powered, adopts dismountable lithium battery or the power supply of common rechargeable battery, also can adopt general dry battery power supply.Dismountable object is be convenient to charging and change.The power consumption that a plurality of LASER Discharge Tube are opened is simultaneously larger, therefore must rationally control the ON time of photoelectric tube and receiving tube, the utility model test cell inner laser receiving tube and mechanism's power valve interval are arranged, can utilize the saltus step of last laser pick-off pipe signal to control the conducting of next LASER Discharge Tube and closing of a upper LASER Discharge Tube, make laser beam of a conducting all the time in test macro.
Each test cell has address separately, and the front and back of each test cell have sequentially determined shift value, and sequence error causes the confusion of all test datas, therefore must specify the order of each test cell.For ease of operation and maintenance, make all transmitter units and receiving element order not need to fix in advance, as long as guarantee all test cell line spread, transmitter unit and receiving element can combination in any be used, without the order of address being done to any artificial setting, because the time of vehicle by each test cell has successively, so main frame is directly according to determining the order of test cell before and after the time of the data of each test cell transmission receiving.
If test cell all will be wired to controller, even if controller is arranged in all test cells centre position, also still exist connecting line oversize, and thereby quantity causes wiring complicated too much, therefore the utility model adopts Zigbee wireless communication module to realize low power consumption data transmission, adopt single work communication modes, can only toward main frame, send data from test cell, test cell order or data that Receiving Host does not send.Main frame is realized and all test cell data communications, and the data that receive are sent to computer by communication interfaces such as USB or RS-232, is realized the demonstration of data processing, analysis and test curve and result by computer.
Vehicle to be measured enters emergency brake after test zone, and vehicle to be measured moves stop motion after a segment distance forward, from brake starting point, to the distance stop, is braking distance.Utilize Velocity-time and displacement-time curve can obtain at an easy rate braking time and braking distance value.From velocity variations, analyze, during emergency brake, vehicle to be measured can slow down suddenly, from curve, hunting speed starts the point declining suddenly, on curve, draw one by this point the straight line vertical with X-axis, the corresponding shift value of intersection point of this straight line and displacement curve is exactly the shift value of braking starting point; On rate curve, finding first speed is zero point, also draw one by this point the straight line vertical with X-axis, the corresponding shift value of intersection point of this straight line and displacement curve is exactly the displacement of the point that stops of car brakeing to be measured, by this value, deducted the shift value of braking starting point, resulting value is exactly the braking distance of vehicle to be measured, and the difference of two corresponding horizontal ordinates of point is exactly braking time.When vehicle starts to start to the time that reaches command speed, it it is the starting time, the distance of travelling is start distance, when vehicle to be measured starts to accelerate, speed starts to increase by zero, record displacement and the time now, when reaching command speed value, record displacement and time, both differences are exactly starting time and start distance.
The speed and the braking performance test that are particularly useful for electric bicycle.The method also can be applied to the test of other vehicles such as toy car, motorcycle or mobile object.
The present embodiment utilizes same set of device, can utilize the succinct speed of a motor vehicle and starting braking time and the distance also accurately obtained directly perceived of test curve.And vehicle speed measurement and starting braking performance test can disposablely complete, and measuring accuracy is high, easy to use, and system power dissipation is low, and cost is low, is convenient to installation and maintenance.
Claims (6)
1. a vehicle launch braking performance tester, it is characterized in that: described measurement mechanism comprises test cell and catoptron, described test cell comprises test bracket, controller, LASER Discharge Tube, laser pick-off pipe and communication module, described test bracket and catoptron are not positioned at the both sides of bicycle traffic route, and described test bracket is parallel with catoptron;
Described LASER Discharge Tube and laser pick-off pipe interval are arranged on described test bracket, between described adjacent LASER Discharge Tube between two and laser pick-off pipe, spacing equates, direction from left to right, arrange successively first LASER Discharge Tube, first LASER Discharge Tube, n position LASER Discharge Tube, n position LASER Discharge Tube, n is natural number, and n >=3, the launching site light source of described LASER Discharge Tube is received by laser pick-off pipe after catoptron reflection, described LASER Discharge Tube has following emission angle: described second laser pick-off pipe receives the laser of first LASER Discharge Tube transmitting, described the 3rd laser pick-off pipe receives the laser of second LASER Discharge Tube transmitting, described n position laser pick-off pipe receives the laser of n-1 position LASER Discharge Tube transmitting, described laser pick-off pipe, described communication module is all connected with described controller.
2. vehicle launch braking performance tester as claimed in claim 1, is characterized in that: described proving installation also comprises starter, and described starter is positioned at the end of described test bracket, and described starter is connected with described controller.
3. vehicle launch braking performance tester as claimed in claim 1 or 2, is characterized in that: described 2
mindividual LASER Discharge Tube and 2
mindividual laser pick-off pipe forms a test cell, m is natural number, and m>=3, described proving installation comprises at least two test cells that are arranged side by side, in a described test cell, the light source of last LASER Discharge Tube transmitting is received by first laser pick-off pipe of next test cell.
4. vehicle launch braking performance tester as claimed in claim 1 or 2, it is characterized in that: described laser pick-off pipe is connected with described communication module, described communication module is connected with master controller, described master controller is connected to computing machine by USB or RS-232 interface, and described test cell is connected with supplying cell.
5. vehicle launch braking performance tester as claimed in claim 1 or 2, is characterized in that: described communication module is Zigbee wireless communication module.
6. vehicle launch braking performance tester as claimed in claim 3, is characterized in that: described supplying cell is dismountable rechargeable battery or dry cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312873.7U CN203479535U (en) | 2013-05-31 | 2013-05-31 | Automobile starting and braking performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312873.7U CN203479535U (en) | 2013-05-31 | 2013-05-31 | Automobile starting and braking performance testing device |
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| Publication Number | Publication Date |
|---|---|
| CN203479535U true CN203479535U (en) | 2014-03-12 |
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ID=50227847
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|---|---|---|---|
| CN201320312873.7U Expired - Fee Related CN203479535U (en) | 2013-05-31 | 2013-05-31 | Automobile starting and braking performance testing device |
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| Country | Link |
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| CN (1) | CN203479535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466703A (en) * | 2021-06-30 | 2021-10-01 | 中国汽车技术研究中心有限公司 | Fuel cell vehicle cold start test method, electronic device and medium |
-
2013
- 2013-05-31 CN CN201320312873.7U patent/CN203479535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466703A (en) * | 2021-06-30 | 2021-10-01 | 中国汽车技术研究中心有限公司 | Fuel cell vehicle cold start test method, electronic device and medium |
| CN113466703B (en) * | 2021-06-30 | 2023-02-17 | 中国汽车技术研究中心有限公司 | Fuel cell vehicle cold start test method, electronic device and medium |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20160531 |