CN102156039A - Special vehicle lamplight detection and analysis system and detection method thereof - Google Patents

Abstract

The invention relates to a special vehicle lamplight detection and analysis system and a detection method thereof. The system comprises a guide rail, a base trolley, an upright post, a light receiving box, an optical system, a camera, a singlechip processing system, an embedded computer data processing system, an ultrasonic ranging system and a ranging alarm system, wherein the camera below the light receiving box acquires a vehicle license plate and vehicle information, and the ultrasonic ranging system informs a driver of the proper position of the test distance through an alarm lamp. A method for judging the highest light intensity of a light spot center by using a middle photocell and judging the light spot symmetry of a high beam by judging the light spot shift angle through the upper, lower, left and right photocells and a method for calculating the offset are used, and the states of the photocells above and below a light and dark cutoff line and the photocells in the direction of a 15-degree or 45-degree angle are judged, so that the position of the light and dark cutoff line of the low beam is judged, and the illumination qualities of the high beam and the low beam are detected.

Description

Special purpose vehicle light check and analysis system and detection method thereof

Technical field

The invention belongs to the special test equipment field, relate to a kind of special purpose vehicle light check and analysis system and detection method thereof, the lower beam illumination that can carry out judgement of hot spot symmetry and car headlamp to the high beam of car headlamp carries out the definition judgment that flex point place "cut-off"line is distinguished the boundary, can detect the lighting quality of high beam and dipped headlights, for the manufacturer of lamp provides detailed lamp spot data, thereby, also can be used for the detection of other lamp lighting quality for the structure of improving lamp provides foundation.

Background technology

Headlamp is that automobile is at night or under the lower situation of visibility, the visual plant of road lighting is provided for the driver, and be that the driver sends caution, the light signalling device of getting in touch with, so headlamp must have enough luminous intensities, correct direction and light shape.Because when driving, automobile is vibrated, may cause the installation site change that headlamp loses, thereby change beam shape and direction of illumination, simultaneously, bulb in use can progressively wear out, and catoptron also can be polluted and make the degradation of its optically focused, causes the lighting quality of headlamp to degenerate.These change all can make the driver unclear to the identification of road ahead situation, or causes that the other side driver dazzles the eyes etc. when sending a car intersection with the opposite, thereby causes the generation of accident.Therefore, the direction of illumination of the luminous intensity of headlamp and light beam is listed in the essential items for inspection that the motor vehicle security of operation detects.

Because the requirement of itself singularity, enter the detection line certain degree of difficulty of having tested for special vehicle, require outdoor even open-air it to be tested.So just require instrument itself to have the condition that adapts to field environment, bring certain convenience for the detection of special purpose vehicle, and existing detecting instrument can not satisfy the requirement of open-air testing environment.

Summary of the invention

Problem to be solved by this invention is, overcome the deficiencies in the prior art, a kind of special purpose vehicle light check and analysis system and detection method thereof are provided, abominable for field environment, do not stop the solution that the problem of standard is carried out in the Automobile Detection process, whether adopt ultrasonic sensor to find range and cooperate alarm lamp prompting driver distance suitable, the high-resolution camera, photo is clear to have a reference value but make if having solved outdoor sunny common camera in the summer problem of exposure easily.Embedded computer has the advantage of waterproof and dustproof, anti-interference, good stability, has brought benefit to field work.

The present invention solves its technical matters and takes following technical scheme to realize:

According to a kind of special purpose vehicle light check and analysis provided by the invention system, comprise guide rail, base dolly, column, be subjected to light box, optical system, camera, scm managing system, embedded computer data handling system, ultrasonic ranging system and range finding warning system, described guide rail is contained under the base dolly, column is installed on the base dolly, be contained on the column by light box, the embedded computer case is contained in and is subjected to below the light box; Be subjected to be equipped with in the light box screen cover, screen, condenser, photoelectric cell sensor, image alignment clamp, catoptron, enter A/D converter after the simulating signal of photoelectric cell sensor output is handled through pre-processed board and convert digital signal to, enter scm managing system then and carry out computing and processing; Be subjected to the interior output signal of light box to realize the reception of data by serial mode and embedded computer data handling system, embedded computer is controlled being subjected to the scm managing system in the light box by serial ports simultaneously, camera in the embedded computer case can be taken pictures constantly to the left and right sides lamp in license plate and the measuring process, ultrasonic sensor is measured vehicle distances simultaneously, and point out by alarm lamp, by LCD the information of vehicle is imported, and by the printer prints data.

The detection method of a kind of special purpose vehicle light check and analysis system, the photoelectric cell sensor that is subjected to light box inside is in order to test light intensity and facula deviation amount, by the image of condenser on screen hot spot equiluminous endless belt is extracted, get its light intensity point of maximum intensity, and measure the computing method of side-play amount, obtain the symmetry of distance light hot spot; Measure for dipped beam, by analysis to dipped beam light shape, judge "cut-off"line, data by the output of photoelectric cell sensor are carried out the accurate position that Treatment Analysis obtains "cut-off"line, and on liquid crystal display equipment screen, be furnished with the mark of tangible "cut-off"line, judge the position of "cut-off"line.

The present invention compared with prior art has significant advantage and beneficial effect:

Because data processing section control module of the present invention adopts Single-chip Controlling, the system core adopts the embedded computer communication technology to carry out exchanges data, and can real time print, and storage data also can be derived data simultaneously, is convenient to the management of data.Whether the present invention adopts ultrasonic sensor to find range and cooperates alarm lamp prompting driver distance suitable, and the high-resolution camera has solved outdoor sunny common camera in the summer problem of exposure easily, and photo is clear to have a reference value but make.Embedded computer has the advantage of waterproof and dustproof, anti-interference, good stability, has brought benefit to field work.

The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is V-type lamp luminous intensity distribution figure of the present invention;

Fig. 2 is Z type lamp luminous intensity distribution figure of the present invention;

Fig. 3 is a general function block diagram of the present invention;

Fig. 4 is an external overall structural representation of the present invention;

Fig. 5 is the light box structural representation that is subjected to of the present invention;

Fig. 6 is an embedded computer chassis front-panel structure synoptic diagram of the present invention;

Fig. 7 is an embedded computer chassis rear panel structure synoptic diagram of the present invention.

Wherein: 1, be subjected to light box 2, embedded computer chassis 3, base dolly 4, camera 5, ultrasonic sensor 6, column 7, button 8, alarm lamp 9,guide rail 11,screen cover 12, screen (printed board) 13,condenser 14,photoelectric cell sensor 15, influencealignment clamp 16,catoptron 17,LCD 18,printer 19,power switch 20, COM221,microphone socket 22,sound socket 23, mouse andkeyboard jack 24, DVI-D 25, direct current+12V outlet 26, network outlet 1, network outlet 2 28, USB socket 29, VGA socket 30, COM1

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, structure, feature and effect thereof, describe in detail as after.

A kind of special purpose vehicle light check and analysis system shown in Fig. 1～7, comprise guide rail, base dolly, column, be subjected to light box, optical system, camera, scm managing system, embedded computer data handling system, ultrasonic ranging system and range finding warning system, described guide rail 9 is contained in the base dolly 3 times, column 6 is installed on the base dolly, be contained on the column by light box 1, embedded computer chassis 2 is contained in and is subjected to below the light box; Be subjected to be equipped with in the lightbox screen cover 11,screen 12,condenser 13,photoelectric cell sensor 14,image alignment clamp 15,catoptron 16, enter A/D converter after the simulating signal of photoelectric cell sensor output is handled through pre-processed board and convert digital signal to, enter scm managing system then and carry out computing and processing; Be subjected to the interior output signal of light box to realize the reception of data by the embedded computer data handling system in serial ports and the embedded computer chassis, embedded computer is also controlled and the intercommunication data being subjected to the scm managing system in the light box by serial ports simultaneously, camera 4 in the embedded computer case can be taken pictures constantly to the left and right sides lamp in license plate and the measuring process, 5 pairs of vehicle distances of ultrasonic sensor are measured simultaneously, and point out by alarm lamp 8, information by 17 pairs of vehicles of LCD is imported, and byprinter 18 print datas.

The detection method of a kind of special purpose vehicle light check and analysis system, the photoelectric cell sensor that is subjected to light box inside is in order to test light intensity and facula deviation amount, by the image of condenser on screen hot spot equiluminous endless belt is extracted, get its light intensity point of maximum intensity, and measure the computing method of side-play amount, obtain the symmetry of distance light hot spot; Measure for dipped beam, by analysis to dipped beam light shape, judge "cut-off"line, data by the output of photoelectric cell sensor are carried out the accurate position that Treatment Analysis obtains "cut-off"line, and on liquid crystal display equipment screen, be furnished with the mark of tangible "cut-off"line, judge the position of "cut-off"line.Camera adopts the high-resolution camera, for strong ultraviolet ray anti-interference effect is arranged, even light strongly also can be taken license plate number clearly.Button 7 is used to control walking up and down of motor, has saved manpower.

For instrument under the situation that mobile condition allows, can attachment rail, in orbit about walking, if condition does not allow not attachment rail yet, directly allow four locating wheel kiss the earths measure.Instrument walks up and down by Electric Machine Control, and only with hand move left and right instrument, self-locking attaching plug prevent that power supply is loosening and cause loss of data.

Power switch 19, COM220,microphone socket 21,sound socket 22, mouse andkeyboard jack 23 and DVI-D 24 are housed on the front panel (see figure 6) of embedded computer chassis; Direct current+12V outlet 25, network outlet 1, network outlet 2 27,USB socket 28, VGA socket 29 and COM130 are housed on the rear panel (see figure 7) of embedded computer chassis.

Principle of work:

One, the detection of high beam

Be installed in the photoelectric cell sensing system receiving optical signals that is subjected in the light box, then Single Chip Microcomputer (SCM) system scans it, and the image that obtains the plane is analyzed.Be distributed in photoelectric cell on the photoelectric cell plank simultaneously and receive the light signal of different directions, handle, have arrow prompting hot spot to take back on the display board to take over, on the upper side on the lower side by single-chip microcomputer.Intermediate light battery scanning light intensity point of maximum intensity also cooperates all the other photoelectric cells to calculate the side-play amount and the light intensity value of hot spot.

Two, the measurement of dipped headlights

Measurement for dipped headlights, the photoelectric cell sensor of being furnished with special measurement dipped beam equally, detect the corner position of the "cut-off"line of dipped beam, the position of dipped headlights vertical transition band, and 15 degree or the position of miter angle, judge the position of dipped beam "cut-off"line by the detection of these three main test points.

Three, ultrasonic sensor (cooperation alarm lamp) and camera

Before instrument is measured at first to measuring with the distance of tested vehicle and detector and pointing out, ultrasonic sensor converts the simulating signal returned digital signal to and sends in the single-chip microcomputer through sending into A/D converter after the pre-service, the single-chip microcomputer control alarm lamp prompting human pilot of handling it.Reach qualified back and allow camera to begin to take pictures when detecting distance, if undesirable can the reselecting of bat taken pictures after correct position regulates again.

Claims (2)

1. special purpose vehicle light check and analysis system, comprise guide rail, base dolly, column, be subjected to light box, optical system, camera, scm managing system, embedded computer data handling system, ultrasonic ranging system and range finding warning system, it is characterized in that: described guide rail is contained under the base dolly, column is installed on the base dolly, be contained on the column by light box, the embedded computer case is contained in and is subjected to below the light box; Be subjected to be equipped with in the light box screen cover, screen, condenser, photoelectric cell sensor, image alignment clamp, catoptron, enter A/D converter after the simulating signal of photoelectric cell sensor output is handled through pre-processed board and convert digital signal to, enter scm managing system then and carry out computing and processing; Be subjected to the interior output signal of light box to realize the reception of data by serial mode and embedded computer data handling system, embedded computer is controlled being subjected to the scm managing system in the light box by serial ports simultaneously, camera in the embedded computer case can be taken pictures in real time to the left and right sides lamp in license plate and the measuring process, ultrasonic sensor is measured vehicle distances simultaneously, and point out by alarm lamp, by LCD the information of vehicle is imported, and by the printer prints data.

2. detection method that is used for the special purpose vehicle light check and analysis system of claim 1, it is characterized in that: the photoelectric cell sensor that is subjected to light box inside is in order to test light intensity and facula deviation amount, by the image of condenser on screen hot spot equiluminous endless belt is extracted, get its light intensity point of maximum intensity, and measure the computing method of side-play amount, obtain the symmetry of distance light hot spot; Measure for dipped beam, by analysis to dipped beam light shape, judge "cut-off"line, data by the output of photoelectric cell sensor are carried out the accurate position that Treatment Analysis obtains "cut-off"line, and on liquid crystal display equipment screen, be furnished with the mark of tangible "cut-off"line, judge the position of "cut-off"line.Having measured automobiles simultaneously implements to take pictures to lamp box detection distance with to vehicle testing.

Images