CN103743578A - Method for testing the performance of a vehicle in optical ranging - Google Patents
Method for testing the performance of a vehicle in optical ranging Download PDFInfo
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- CN103743578A CN103743578A CN201310739843.9A CN201310739843A CN103743578A CN 103743578 A CN103743578 A CN 103743578A CN 201310739843 A CN201310739843 A CN 201310739843A CN 103743578 A CN103743578 A CN 103743578A
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Abstract
The present invention relates to a method for testing the performance of a vehicle in optical ranging, which can realize the record of immediate movement while the car is moving and can form a displacement time curve in time domain, through processing the data computers, various datas in the process of the vehicle braking can be gained, which includes an acceleration curve, an average acceleration, a maximum traveling speed, an initial speed of braking, a braking length, a braking response time, an average deceleration and the like. The present invention can gather and analyze various motion parameters in the process of the vehicle braking with high precision, providing the data support for improving the vehicle test and the method of the product quality detection.
Description
Technical field
The invention belongs to optical detective technology and instrument field, what be specifically related to is a kind of by the method for optical ranging testing vehicle rideability.
Background technology
Along with the development of modern test technology, the test request of vehicle movement parameter constantly promotes.The method of testing of optical principle, due to its compact conformation, many reasons such as error is little, precision is high, antijamming capability is strong, environmental suitability is strong, is more and more subject to people's favor.
The development of computer programming software, can be by the data that collect the mode record with curve, can carry out various transformations and calculating by the requirement of expection equally.For the post-processed of data provides favourable guarantee.
The present invention is by the high-precision image data of high-frequency, and the physical parameter of the method test moving vehicle that later stage computing machine is processed, can guarantee final accuracy of detection, simple in structure, is easy to realize.
Summary of the invention
A kind of method that the object of this invention is to provide optical ranging testing vehicle rideability.The method can realize the detection of high precision, high efficiency kinematic parameter, realizes the accurate measurement of vehicle movement parameter, can, for the technical appraisement that improves of product, provide Data support accurately.
Thereby the present invention records linear running process and the operational factor of the displacement computational analysis object of testing vehicle by laser range sensor.In the present invention, adopt the laser range sensor of high sampling frequency, obtain the straight-line displacement-time curve of object, by mathematics derived function, can obtain its speed time curve, by coordinate, slope and the integral area of certain section on analytic curve, draw the various features parameter of object of which movement.
Technical scheme of the present invention is: a kind of method of optical ranging testing vehicle rideability, comprise master reference, and be laser range sensor; And capture card, braking trigger element, remote wireless transmission device, radio receiver, main frame;
Described master reference, capture card and computing machine form the characteristic parameter that first loop shows in real time and registration of vehicle moves;
Testing vehicle, braking trigger element, remote wireless transmission device, radio receiver form second loop with computing machine, the position moment of the wireless transmission registration of vehicle braking of the trigger pip by braking;
It is characterized in that: the real-time displacement of the testing vehicle passing over by collection master reference, mode by differentiate obtains the speed time curve in time domain, by the characteristic of analytic curve, the position that acceleration initial position, the position that reaches maximum operational speed and the car brakeing of searching curve stops; And the switching signal of coming by braking trigger element wireless transmission obtains the initial position of braking; Utilize the data of the point of these positions on above-mentioned these curves, the mathematics manipulation mode by differentiate and integration obtains test data, forms test report.Further, described method also comprises following concrete steps:
1) first connect computing machine, master reference, capture card, radio receiver; And testing vehicle, braking trigger element, remote wireless transmission device; The acceleration of survey vehicle, even running, Brake stop complete the overall process of a driving pattern, record each immediate movement of whole circulation;
2) by gathering next time shifting two latitude Numerical Value Derivative, make the time m-rate curve of overall process;
3) finding speed on curve is zero starting point, is labeled as a little 1; Reach the point of max. speed, be labeled as a little 2;
4) braking trigger element, by being wirelessly transmitted to the point at capture card place, is labeled as a little 3, i.e. initial speed of braking point on curve;
5) speed becomes zero point place again, is labeled as a little 4;
6) 1 to the curve of point between 2 be accelerator curve, by computing machine, process, can obtain testing vehicle and accelerate to each needed time of whole milimeter number, by repeatedly measuring and be averaged numerical value, can accurately obtain the acceleration curve of testing vehicle; And obtain successively acceleration time and average acceleration;
7) 2 to the curve of point between 3 be maximum operational speed operational process curve, by calculating, obtain the maximum operational speed of testing vehicle;
8) 3 to the curve of point between 4 be braking procedure curve, by post-processed, can obtain braking distance, initial speed of braking, braking average retardation rate.
The present invention's advantage is compared with prior art
1), by the post-processed of computing machine, can, by the Function Extension of laser ranging to the test to vehicle operating parameters, solve the requirement to data accuracy in vehicle testing.
2) the present invention is compared with contact instrument as fifth wheel instrument and untouchable GPS testing tool etc., and measuring accuracy grade improves, and strong interference immunity is simultaneously installed easy to connectly, easily realizes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that Instrumental of the present invention connects.
Fig. 2 is the test interface of testing software in the present invention.
Fig. 3 is the test curve in actual test.
Fig. 4 is that in the present invention, braking triggers and the schematic diagram receiving
Fig. 5 is the test report of the actual formation of the present invention.
Embodiment
Embodiment:
1) by Fig. 1 requirement, connect pertinent instruments, master reference is connected with computing machine, and simultaneous computer is also connected with radio receiver; Master reference is laser range finder, be fixed in a motionless support place, assurance light level penetrates, with 24V direct supply, to master reference, power, connect capture card, capture card is by RS232 serial ports and compunication, form main signal acquisition circuit, reflector is fixedly secured on tested vehicle, and the laser level of master reference is radiated on the reflector on vehicle after penetrating, thereby measures spacing; Tested vehicle along linear running approach or far away in from master reference, during vehicle operating, need to guarantee that red laser point is positioned on reflector all the time, the collected and record of immediate movement between master reference and reflector.Braking trigger element is fixed on tested vehicle brake pedal and connects remote wireless transmission device (wireless simulation amount acquisition controller), the switching signal producing when brake triggering device is closed is by utilizing radio transmitting device to be wirelessly transmitted to and the radio receiver being connected on computing machine, thereby, computing machine can registration of vehicle braking position constantly.After test macro installs, data acquisition starts, tested vehicle prolongs and straightforwardly from stationary state, with peak acceleration, accelerates to max. speed, keep max. speed after even running a period of time, brake pedal is depressed to triggering brake triggering device, with maximum deceleration, realize and stopping, complete a driving pattern, each immediate movement of the whole circulation of acquisition and recording.
2) by gathering next time shifting two Dimension Numerical differentiate, make the time rate curve of overall process as Fig. 3.
3) finding speed is zero the starting point that rises, and is labeled as a little 1.Reach the point of max. speed, be labeled as a little 2.
4) braking trigger element, by the wireless point that is transmitted to capture card place, is labeled as a little 3, i.e. initial speed of braking point.
5) speed becomes zero point place again, is labeled as a little 4.
6) 1 is accelerator curve to putting 2, by computing machine, processes, and can obtain model machine and accelerate to the needed time of whole milimeter number (as Fig. 5), by repeatedly measuring and be averaged numerical value, can accurately obtain the acceleration curve of model machine.And obtain successively acceleration time and average acceleration.
7) 2 is maximum operational speed operational process curve to putting 3, by processing, obtains the maximum operational speed of tested model machine.
8) 3 is braking procedure curve to putting 4, by post-processed, can obtain braking distance, initial speed of braking, braking average retardation rate etc.Computing machine forms test report page (as Fig. 5).
The above; it is only the embodiment in the present invention; but protection scope of the present invention is not limited to this, any people who is familiar with this technology revises or replaces in the part in the disclosed technical scope of the present invention, all should be encompassed in of the present invention comprise scope within.
Claims (4)
1. a method for optical ranging testing vehicle rideability, comprising:
Master reference is laser range sensor; And capture card, braking trigger element, remote wireless transmission device, radio receiver, main frame;
Described master reference, capture card and computing machine form the characteristic parameter that first loop shows in real time and registration of vehicle moves;
Testing vehicle, braking trigger element, remote wireless transmission device, radio receiver form second loop with computing machine, the position moment of the wireless transmission registration of vehicle braking of the trigger pip by braking;
It is characterized in that:
The real-time displacement of the testing vehicle passing over by collection master reference, mode by differentiate obtains the speed time curve in time domain, by the characteristic of analytic curve, the position that acceleration initial position, the position that reaches maximum operational speed and the car brakeing of searching curve stops; And the switching signal of coming by braking trigger element wireless transmission obtains the initial position of braking; Utilize the data of the point of these positions on above-mentioned these curves, the mathematics manipulation mode by differentiate and integration obtains test data, forms test report.
2. according to right 1, require the method for described optical ranging testing vehicle rideability, it is characterized in that being specifically also to comprise the steps:
1) first connect computing machine, master reference, capture card, radio receiver; And testing vehicle, braking trigger element, remote wireless transmission device; The acceleration of survey vehicle, even running, Brake stop complete the overall process of a driving pattern, record each immediate movement of whole circulation;
2) by gathering next time shifting two latitude Numerical Value Derivative, make the time m-rate curve of overall process;
3) finding speed on curve is zero starting point, is labeled as a little 1; Reach the point of max. speed, be labeled as a little 2;
4) braking trigger element, by being wirelessly transmitted to the point at capture card place, is labeled as a little 3, i.e. initial speed of braking point on curve;
5) speed becomes zero point place again, is labeled as a little 4;
6) 1 to the curve of point between 2 be accelerator curve, by computing machine, process, can obtain testing vehicle and accelerate to each needed time of whole milimeter number, by repeatedly measuring and be averaged numerical value, can accurately obtain the acceleration curve of testing vehicle; And obtain successively acceleration time and average acceleration;
7) 2 to the curve of point between 3 be maximum operational speed operational process curve, by calculating, obtain the maximum operational speed of testing vehicle;
8) 3 to the curve of point between 4 be braking procedure curve, by post-processed, can obtain braking distance, initial speed of braking, braking average retardation rate.
3. according to the method for the optical ranging testing vehicle rideability described in right 1, it is characterized in that: the process that braking triggers wireless transmission is: the switching signal triggering when driver is braked, by wireless launcher, launch, wireless reception device is transferred to computer after signal is processed, the point data that form time domain scope are labeled as braking initial point on curve.
4. according to the method for the optical ranging testing vehicle rideability described in right 1, its spy is: the testing vehicle of the using it for analytic band lifting functions motion analysis of decline process that hoists, lifting velocity, acceleration or damping characteristics.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310739843.9A CN103743578B (en) | 2013-12-30 | 2013-12-30 | A kind of method of optical ranging testing vehicle rideability |
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| CN201310739843.9A CN103743578B (en) | 2013-12-30 | 2013-12-30 | A kind of method of optical ranging testing vehicle rideability |
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| CN103743578A true CN103743578A (en) | 2014-04-23 |
| CN103743578B CN103743578B (en) | 2015-08-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890661A (en) * | 2015-06-30 | 2015-09-09 | 三一重机有限公司 | Hydraulic measurement system capable of accurately measuring braking distance and engineering machine |
| CN105716878A (en) * | 2016-04-12 | 2016-06-29 | 王冰 | Automobile braking performance road testing instrument and detection method thereof |
| CN109975576A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of accelerating testing device and acceleration test method |
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| KR20030067903A (en) * | 2002-02-09 | 2003-08-19 | 주식회사 만도 | Braking distance measuring equipment and method of vehicle |
| CN102914437A (en) * | 2012-10-29 | 2013-02-06 | 浙江大学 | Vehicle road test brake performance detection system based on laser ranging |
| CN103162971A (en) * | 2013-03-28 | 2013-06-19 | 西南大学 | Wireless running process test system for electric vehicle |
| CN103323258A (en) * | 2013-05-31 | 2013-09-25 | 浙江工业大学 | Vehicle starting and braking performance detecting device based on speed measurement |
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2013
- 2013-12-30 CN CN201310739843.9A patent/CN103743578B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030067903A (en) * | 2002-02-09 | 2003-08-19 | 주식회사 만도 | Braking distance measuring equipment and method of vehicle |
| CN102914437A (en) * | 2012-10-29 | 2013-02-06 | 浙江大学 | Vehicle road test brake performance detection system based on laser ranging |
| CN103162971A (en) * | 2013-03-28 | 2013-06-19 | 西南大学 | Wireless running process test system for electric vehicle |
| CN103323258A (en) * | 2013-05-31 | 2013-09-25 | 浙江工业大学 | Vehicle starting and braking performance detecting device based on speed measurement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890661A (en) * | 2015-06-30 | 2015-09-09 | 三一重机有限公司 | Hydraulic measurement system capable of accurately measuring braking distance and engineering machine |
| CN104890661B (en) * | 2015-06-30 | 2018-11-16 | 三一重机有限公司 | A kind of hydraulic test system and engineering machinery of precise measurement braking distance |
| CN105716878A (en) * | 2016-04-12 | 2016-06-29 | 王冰 | Automobile braking performance road testing instrument and detection method thereof |
| CN109975576A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of accelerating testing device and acceleration test method |
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| CN103743578B (en) | 2015-08-05 |
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Address after: No. 3, Yanqing garden, Zhongguancun, Yanqing, Beijing Co-patentee after: Hangcha Group Co., Ltd. Patentee after: Department of China (Beijing) vehicle detection Engineering Research Institute Co. Ltd. Address before: 102100 East Main Street Beijing city Yanqing County No. 55 Co-patentee before: Hangcha Group Co., Ltd. Patentee before: PROVING GROUND FOR CONSTRUCTION MACHINERY & REFIT MILITARY VEHICLES OF CAM |
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