248results about "Testing alignment of vehicle headlamps" patented technology

A detector for checking the grading performance of motor vehicle headlight consists of two reference columns for positioning, three digital cameras, detection screen, driving mechanism of screen and computer. It features setting screen driving mechanism in front of motor vehicle, two digital cameras on top of screen with shooting range to cover planar width defined by two positioning reference column, another digital camera on one of two said columns or near center of line connected on the ground between said two columns. The detecting method is also disclosed.

A vertical calibrating method of CCD imaging optical axis to light grading screen based on symmetric measurement include setting formed circular target plane to be under midperpendicular of screen in parallel mode, arranging CCD video camera in front of circular target center by equal height way for carrying out imaging on light form on grading screen and for carrying out measurement on illumination of light form, coinciding stripe center line with midperpendicular of grading screen and further regulating CCD video camera to be on certain position.

The invention relates to an intelligent lighting automatic detection and analysis system and a detection method thereof. The intelligent lighting automatic detection and analysis system comprises a guide way, a base larry, an upright post, a photic box, an optical system, a CCD vidicon, a singlechip processing system and a DSP image processing system, wherein symmetry of high beam light spots is obtained from images photographed by the CCD vidicon in the photic box through pretreatment, isolux annulus extraction, isolux annulus centre calculation and symmetry check; and definition of low beam light spots on a dividing line of light and dark cutoff regions is obtained from the images through the pretreatment, low beam light and dark bend line extraction and light and dark dividing line bright band width calculation. The invention detects the lighting quality of high beam and low beam by adopting the method of judging the symmetry of the high beam light spots with the relative average offset of isolux annuluscentre coordinates to the centre of the light spots and the calculation method, and the method of judging definition of the low beam light spots on the light and dark bend positions with size of band width of the bright band of the images above the bend line and the calculation method of the band width of the bright band.

A vehicle lamp inspection equipment comprises a vehicle position recognizing section for detecting arrival of a vehicle at an inspection position, a terminal to be connected with an ECU mounted on the vehicle, cameras for imaging the lamp of the vehicle which has arrived at the inspection position from the right and left front, cameras for imaging from the right and left rear, spot lights for illuminating the right and left wheels and long fluorescent lights for illuminating the right and left rear wheels. When the vehicle has arrived at the inspection position, a main processing section turns on or flashes the lamp through the terminal and the ECU and acquires image data from the cameras, thereby checking the lamp.

The invention relates to a system for in-situ control of the orientation of a vehicle headlamp equipped with a light source fixed on a mobile reflector, and including a camera mounted in the vehicle, an image processing unit connected to the camera, and a specific light point emission device. It also relates to a process for in-situ control of the orientation of a vehicle headlamp, wherein it includes the following operations: recording of successive images of a scene extending in front of the vehicle, processing of at least one image of the scene and production of a processed image, determination, from this processed image, of a horizon line of the scene, determination of a specific point in the scene located at a pre-defined distance D from the horizon line, adjustment of the headlamp until this specific point is located in the light beam emitted by the headlamp.

The invention relates to the technical field of automobile lamp assembling and detecting, in particular to intelligent gluing and detecting equipment of an automobile headlamp. According to the intelligent gluing and detecting equipment, all parts of automobile lamp shell processing and detecting are integrated in a work station system, and the assembling efficiency is greatly improved. The intelligent gluing and detecting equipment comprises face cover buckling stations, face cover feeding stations, light type detecting stations and airtightness detecting stations, and is characterized in that the intelligent gluing and detecting equipment further comprises a gluing robot and a grabbing robot; the face cover buckling stations, the face cover feeding stations, the light type detecting stations and the airtightness detecting stations are arranged in succession; the gluing robot and the grabbing robot are arranged on the same sides of the face cover buckling stations, the face cover feeding stations, the light type detecting stations and the airtightness detecting stations; and the face cover buckling stations, the face cover feeding stations, the light type detecting stations and the airtightness detecting stations each comprise a main support and a tool plate movably mounted on the main support, and each tool plate is connected with a tool plate drive air cylinder.

An vehicle lamp assembling apparatus including a jig which supports a lamp component, an apparatus main body having disposed thereon positioning and fastening mechanisms (plungers and engagement holes) for positioning and fastening the jig to the apparatus main body. Some equipment (contact units) is disposed on the apparatus main body, and / or on the jig, for carrying out a predetermined processing, such as working or inspection, on the lamp component supported by the jig. Further, a control part is disposed on the apparatus main body, for drive control of the equipment. An ID plate that stores processing information, such as driving procedures and driving amount of the equipment, is disposed on the jig, whereas a non-contact memory reader is disposed on the apparatus main body so as to oppose the ID plate when the jig is fastened to the apparatus main body. The control part drives the equipment based on the processing information read from the ID plate via the memory reader. Thus, the amount of equipment-drive-control data stored in the control part of the apparatus main body is reduced, and the control part need not be a high-performance CPU.

The invention discloses a far-ray beam luminescence intensity detection method for vehicle headlight tester. It moves light intensity detection board behind the vehicle headlight tester's lens on the vertical surface of beam projection, and after the light intensity detection board entirely through the beam projection area, the collected data by several photoelectric conversion components straight arranged in the light intensity detection board reflect optical distribution condition of the entire beam in the vertical plane of the beam projection, and the data can accurately detect the far-ray beam luminescence intensity of the vehicles headlight. The detection machine to implement the method is: the photoelectric conversion element is installed on the bright light detection board, which locates after the lens in the vehicle headlight tester, and a number of photoelectric conversion elements (4) is laid out in linear order on the light intensity detection board (2), and the light intensity detection board (2) is installed in the drag machine (3). Compared with the existing technologies, the invention has high measurement accuracy, and good applicability to the vehicle headlight which is poor far-ray beam distribution feature.

The invention discloses a motor vehicle headlamp luminous intensity distribution property self-adaption detection method based on camera method, which comprises the following steps of: performing quasi-positioning on far and near illumination; acquiring the light type of lower beams, acquiring the light type of upper beams; digitally processing light type data of upper and lower beams; judging whether the data meets a certain requirement or not; storing coordinates of movement compared with an initial position; storing images and the data; printing and displaying data; carrying out self-adaption sampling region adjustment; judging whether the sampling region surpasses a certain range or not; determining whether a product is qualified, and the like. By adopting the motor vehicle headlamp luminous intensity distribution property self-adaption detection method based on camera method, all possible measurement can be realized by performing one-step collimation of the motor vehicle headlamp luminous intensity distribution property self-adaption detection system in the prior art; and if a lamp at a collimation position is unqualified, other positions where the lamp is qualified can be searched through software without collimating or testing once again, so that the detection testing time can be shortened, and the possibility of passed inspection and the authority and accuracy of detection can be increased.

The invention relates to motor vehicle parking deflection angle testing method and device. The motor vehicle parking deflection angle testing method comprises the steps of: moving a longitudinal collimated radiation device; respectively emitting emission collimated radiation and receiving collimated radiation by the left and the right sides of the longitudinal collimated radiation device, wherein the collimated radiation beam emitted from the left side reaches the inner side wall of a left tire and is reflected, timing starts when the longitudinal collimated radiation device starts to receive the collimated radiation beam, the collimated radiation beam emitted from the right side reaches the inner side wall of a left tire and is reflected, and timing stops when the longitudinal collimated radiation device starts to receive the collimated radiation beam; measuring to obtain a distance D for the collimated radiation device to walk in the time period and simultaneously acquiring tire spacing L of a motor vehicle; and calculating to obtain a deflection angle theta according to the deflection angle computational formula: theta is equal to arctg(D / L). The invention measures parking angle of vehicles and can utilize the parking angle of the vehicles to correct the actual deflection angle of light. The invention has simple and convenient operation, simple structure, high efficiency and accurate measurement.

The present invention discloses an image shooting method testing system of the light distribution property of the headlights of the motorcycle based on C / S mode. The hardware part of the system includes a PC machine and a displayer which are positioned in the workshop, a workpiece rotating table which is positioned on the front of the workpiece for placing the lamps to be detected, a testing curtain positioned on the wall of the darkroom, a CCD vidicon positioned on the five-dimensional adjusting frame and oppositing to said testing curtain and an industrial personal computer which is connected to said CCD vidicon and is provided with an image collecting card inside; a rectangular light inlet window positioned on the wall between the darkroom and the workshop; the industrial personal computer is positioned on the PC machine of said workshop through netting twines; the software part of the system is the self-written measuring programs aiming to the system in the present invention. The advantages of the present invention are: the production cost is low; the detecting speed is fast; the light type photos of the lamps can be storied and self-adapting collimated; the system is an important reference of the disqualification factors and the improvement of the products for analysing the products for the corporations.

The invention discloses an intelligent full-automatic automobile headlamp detector. According to the intelligent full-automatic automobile headlamp detector, a primary photosensitive component can primarily position an area, with the highest light intensity, of an automobile headlamp, and a secondary photosensitive component can finely position the area with the highest light intensity, so that a light intensity detecting element of a detector main body can directly face the area with the highest light intensity to obtain accurate light intensity data. Through the linkage of a driving component, the detector main body can perform positioning intelligently, and the positioning speed is very high; a position sensing device of the intelligent full-automatic automobile headlamp detector can sense whether an automobile is positioned in a correct detecting position so as to ensure the effectiveness of the data detected by the detector main body. Meanwhile, because of the arrangement of a power supply module and an electric power storage module, the driving component of the intelligent full-automatic automobile headlamp detector cannot be bound by a power cord, and the operation is safer. The intelligent full-automatic automobile headlamp detector is used for detecting parameters of the automobile headlamp.

A method for measuring relative position of distance light to detector includes using cetre connection line of light in parallel to track of detector as centring position of the light and detector, moving up and down as well as left and right in certain distance for contring light source centre to light test screen centre, measuring equal height h and vertical distance, L3 and l4 of the two to obtain centre distance l5 and error angle Q, using these figure to revise detection value.

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.

A method of compensating a Mura defect of a display apparatus, which includes a display area divided into an upper area and a lower area, includes calculating a sharp grayscale correction value of a predetermined sample grayscale displayed on the display apparatus, where the sharp grayscale correction value is configured to compensate a sharp horizontal Mura between the upper and lower areas, displaying a corrected sample grayscale on the display apparatus based on the predetermined sample grayscale and the sharp grayscale correction value, sensing the corrected sample grayscale displayed on each of a plurality of sample areas defined on the display area based on a Mura type, calculating an intensity profile of the sample grayscale and a target intensity profile configured to compensate the intensity profile of the sample grayscale, calculating a grayscale correction value of the sample area using the intensity profile and the target intensity profile.

The invention discloses a method for conducting error correcting on measuring data of light bundle shining directions of an automobile headlamp detecting instrument in vehicle detecting. The method is mainly applicable to the full-automatic detecting process of an automobile headlamp. A system is composed of a camera installed right above a vehicle to be tested, a computer, and the automobile headlamp detecting instrument. A light bundle shining direction measurement error is formed by the offset angle between an image plane and a detecting site, and the automobile lengthwise axis offset angle of an image. A rotary matrix between an image coordinate system and a world coordinate system is obtained through camera calibration, and then the image offset angle is obtained. The automobile lengthwise axis offset angle of the image is obtained based on a quick realizing method of a largest second order central moment algorithm. According to the method, the measurement data of the headlamp detecting instrument can be corrected automatically, the accuracy rate and the repeatability of a headlamp bundle shining direction detecting result are effectively improved, and guarantee is provided for safety running of an automobile at night.

A vehicle headlamp device includes headlamps, which are structured so as to be able to project or irradiate given patterns and given shapes without distortion on a given virtual surface in front of a vehicle from a left headlight and a right headlight, respectively, a camera that captures an image of the area in front of the vehicle, and a state detecting portion configured to detect distortion of the given patterns, which are projected or irradiated on an irradiated surface in front of the vehicle, relative to the given patterns projected or irradiated on the given virtual surface in front of the vehicle, based on the captured image, and also detect a state of the irradiated surface based on the distortion, and a correcting portion configured to correct a relative optical axis deviation between the left headlight and the right headlight.

The invention discloses a device for automatically inducting automobile positions. The device comprises at least three automobile position inductors, wherein the first, the second and the third automobile position inductors are respectively embedded in the road surface before an automobile running into the station of a headlamp aligner, the first automobile position inductor and the second automobile position inductor are arranged vertical to a left driving guide line and a right driving guide line, the distance between the first automobile position inductor and a guide rail of the headlamp aligner is equal to the distance between the second automobile position inductor and the guide rail of the headlamp aligner, the third automobile position inductor is arranged in front of or behind the first automobile position inductor or the second automobile position inductor and is vertical to one of the left and the right driving guide lines, and each automobile position inductor is provided with an automobile position induction unit. The device can induct the position of the detected automobile automatically and calculate the offset angle of the driving direction of the detected automobile and the driving guide line of a detection line automatically, so as to correct detection data of a headlamp to greatly reduce the errors of the detection data. The device has the advantages of simple structure, small equipment volume, and greatly reduced cost.

The invention belongs to the technical field of detection. Disclosed is an automobile headlamp detection method, comprising the following steps: 1, acquiring light sources of left and right headlampsof a detected automobile: simultaneously acquiring the light sources of the left and right headlamps of the detected automobile in such a way that a digital camera faces the detected automobile; 2, acquiring projected light spots of the left and right headlamps of the detected automobile: simultaneously acquiring the light spots protected to a screen by the left and right headlamps of the detectedautomobile in such a way that another digital camera backs the detected automobile; 3, processing a digital image: transmitting the data acquired in steps (1) and (2) to a computer by a communicationcable, and detecting the headlamps of the automobile by a matched digital image processing algorithm. The method is completely different from the prior art. During detection, any movement and alignment on the headlamps are not needed, and the detection process is automatically completed, so the method is reliable and low in cost and does not need manual metering. The measurement method ensures high measurement precision and low measurement error.

The invention discloses a rapid positioning detection method and device for an automobile headlamp. The rapid positioning detection device comprises a positioning plate, a transmission assembly, a headlamp detector, an induction assembly, a horizontal positioning assembly and an automobile correcting assembly. The transmission assembly comprises a sliding base, a supporting column, a first photosensitive assembly and a shaft guide rail assembly. An X-axis guide rail assembly is fixed on one side of the positioning plate; the sliding base is arranged on the X-axis guide rail assembly in a sliding manner; the supporting column is vertically fixed to the sliding base, a Z-axis guide rail is vertically arranged on one side of the supporting column, the headlamp detector is arranged on the Z-axis guide rail in a sliding mode, the first photosensitive assembly is arranged at the front end of the supporting column, and the induction assembly, the horizontal positioning assembly and the automobile correcting assembly are sequentially arranged in front of the transmission assembly. The approximate range of the headlamp on the X axis and the approximate range of the headlamp on the Z axis are determined through the horizontal positioning assembly and the first photosensitive assembly respectively, so that the moving range of the headlamp detector is greatly reduced, and positioning of the headlamp is faster.

The invention provides an electronic screen method full-automatic motor vehicle headlight detector and a detecting method and relates to the technical field of motor vehicle survey technology. The electronic screen method full-automatic motor vehicle headlight detector and the detecting method comprise a detector. A walking mechanism which is capable of driving the detector to move along the horizontal direction is arranged on the bottom of the detector. A simulation front electronic screen wall is arranged in front of the detector. A simulation back electronic screen wall is arranged at the back of the detector. The detector is perpendicular to a driving direction of a surveyed motor vehicle. Light beam deviation of the motor vehicle headlight is confirmed through a method of drawing a simulated screen cross curve on the simulation front electronic screen wall and the simulation back electronic screen wall. Light intensity and light spots on the motor vehicle headlight of the simulation front electronic screen wall and the simulation back electronic screen wall are collected and analyzed through the detector. Far and near light intensity of the motor vehicle headlight, passing light light and shade cut-off points, light beam deviation, height of light, a left and right symmetrical difference on the periphery of a car body are confirmed. The electronic screen method full-automatic motor vehicle headlight detector and the detecting method are suitable for the survey of the motor vehicle headlight of a motor vehicle check station, a motor vehicle producing factory and a motor vehicle light research unit. The detector system is stable, reliable and simple in operation.

The invention belongs to the technical field of vehicle lamp detection, in particular to a vehicle lamp lens sunlight focus point detection device and a use method thereof. The device comprises a base. A horizontal rotary bench is rotatably connected to the base. A lens adjustment mechanism and a sample piece adjustment mechanism are arranged on the horizontal rotary bench. The lens adjustment mechanism comprises a first support and a first precision rotary bench. The first support is fixed to the horizontal rotary bench. A clamping device is installed on the rotary part of the first precisionrotary bench. The sample piece adjustment mechanism comprises an elevating bench and a second precision rotary bench. The bench seat of the second precision rotary bench is fixed to the elevating bench. A fixed plate is fixed on the rotary part of the second precision rotary bench. The beneficial effects are that positions of reflection focus points and refraction focus points can be calculated;the calculation is precise; it is convenient to carry out analysis to obtain the safe distance where the lens is prevented from burning lamp materials; and after a thermal imager tests the reflectionfocus points and the refraction focus points, a precise and unique temperature value can be obtained.

A method for aiming headlamps on a vehicle achieves a reduced variation in beam heights without making any changes to existing test equipment. A cutoff height of a first headlamp is measured. The first headlamp is adjusted until a first measured cutoff height is within a predetermined range centered on a predetermined fixed height. A cutoff height of a second headlamp is measured. The second headlamp is adjusted until a second measured cutoff height is within the predetermined range centered on the first measured cutoff height.

The invention discloses a vehicle test bench with universality. The vehicle test bench comprises a test platform, four or more vertical action assemblies, two or more longitudinal action assemblies, afront gauge adjusting assembly and a rear gauge adjusting assembly, wherein the test platform is located in an XOY plane; the four or more vertical action assemblies are correspondingly arranged at four corners of the test platform, wherein the tail ends of the vertical action assemblies are correspondingly provided with first hinge structures, the head end of each vertical action assembly is connected with the test platform through second hinge structures, and each vertical action assembly is telescopically arranged in the self-length direction; two or more longitudinal action assemblies arecorrespondingly arranged on the two sides of the test platform, where one ends of the longitudinal action assemblies are correspondingly connected with the test platform through third hinge structures, and the other ends of the longitudinal action assemblies are correspondingly provided with fourth hinge structures; and each longitudinal action assembly is telescopically arranged in the self-length direction.

A motor vehicle headlamp detector light intensity detection method is disclosed. The method has the following steps that firstly, a headlamp detector calibrator is used to calibrate the headlamp detector, a calibrator illumination intensity is set to be a fixed value (CD), calibrator optical axis offset values (angles) are arranged on different verification points respectively, and a corresponding light intensity value f (xi, yi) of the headlamp detector is read and recorded; secondly, the light intensity value f (xi, yi) carries out light intensity curving surface fitting; finally, when the motor vehicle headlamp irradiates as the different optical axis offset values (angles), the headlamp detector corrects the read light intensity value through a light intensity curving surface equation so as to obtain the real light intensity value of the headlamp. By using the method of the invention, problems that an operand is large, time consuming is severe and so on in an original fitting method are overcome so as to guarantee accuracy of detection of the headlamp detector.

The invention relates to the optical-mechanical-electrical technical field, and particularly relates to a quick detection device and method for the photometric characteristics of a motor vehicle lamp. The device comprises a darkroom and two industrial CCD (Charge Coupled Device) cameras, wherein the darkroom is arranged opposite to a lamp fixing seat, the horizontal center axes of the darkroom and the lamp fixing seat are on the optical axis of the lamp, and an imaging screen is installed in the darkroom via a screen moving mechanism; the two industrial CCD cameras are connected to the upper and lower parts of the darkroom; and the industrial CCD cameras, a driving motor of the screen moving mechanism and a driving motor of an electric turntable are electrically connected with an industrial control computer. The detection method comprises equipment preparation, lamp installation, image acquisition, image processing, sample calibration and database establishment, and lamp photometric characteristic test. According to the device and the method, images are shot by a CCD planar array device, the relation between the illumination of the lamp and the gray value of the shot images is acquired, a database is established by using data obtained by multiple experiments of the lamp calibrated according to the illumination, and then the digital quantity of each pixel is inversed to the illumination of each point by spatial sampling.

A headlight optical axis adjustment method where, on an imaged picture of a light distribution pattern of low beam illumination from a master headlight whose optical axis has been adjusted, a relative positional relationship between a horizontal and oblique line of a light / dark boundary line. A reference point is determined on the imaged picture to correspond to a bulb center. An acceptance frame is set based on an imaged position of an intersection of the horizontal and oblique line. On an imaged picture of a light distribution pattern of low beam illumination from a headlight to be adjusted, a horizontal and oblique line of a light / dark boundary line are detected based on a relative positional relationship with the reference point, and the optical axis of the headlight to be adjusted is adjusted so that an intersection of the detected horizontal and oblique lines is within the acceptance frame.

A leveling apparatus for a vehicle headlamp has a case body, a motor disposed within the case body, a worm wheel supported by the case body rotatably but unmovably in the longitudinal direction and rotated by the motor and a shaft screwed into the worm wheel. The shaft and the worm wheel are screwed together by thread ridges provided on the inner side of the worm wheel and thread ridges provided on the outer periphery of a driven portion forming the shaft. The thread ridges on one side out of the thread ridges on two sides are formed by one to two pitches.