CN114441139B - Automobile headlight testing method and device - Google Patents
Automobile headlight testing method and device Download PDFInfo
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- CN114441139B CN114441139B CN202011216649.9A CN202011216649A CN114441139B CN 114441139 B CN114441139 B CN 114441139B CN 202011216649 A CN202011216649 A CN 202011216649A CN 114441139 B CN114441139 B CN 114441139B
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- G01M11/06—Testing the alignment of vehicle headlight devices
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention provides a method and a device for testing a headlight of an automobile, and relates to the field of automobile light detection. The method comprises the following steps: acquiring first measurement information of a measured vehicle in a test scene, wherein the first measurement information comprises a plurality of measurement parameter values of the measured vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the measured vehicle; acquiring driving information of the tested vehicle in the test scene at different measurement moments; and determining the headlight performance parameters of the tested vehicle according to the first measurement information and the driving information. The headlight performance parameter determined by the embodiment of the invention has a plurality of parameter values, measurement positions and measurement moments related to the headlight of the tested vehicle, thereby overcoming the problem of single light test index in the prior art; the invention can also test the lamp performance index parameters in different scenes, and also solves the problem of singleness of the test scene.
Description
Technical Field
The invention relates to the field of automobile light detection, in particular to an automobile headlight testing method and device.
Background
The existing automobile lamps are more in types, such as halogen headlights, xenon headlights and laser headlights, and the brightness, irradiation distance and the like of the automobile headlights manufactured by various automobile manufacturers are different, so that the safety risk of the automobile driving at night is higher. Whether the automobile manufacturer or the automobile testing and detecting mechanism is used, most of the automobile testing and detecting mechanism is used for detecting the brightness performance of a single lamp, the detecting method is single, and the testing index is single.
Conventionally, there have been bottlenecks in testing automotive headlamps, such as the following: 1. the lamp attenuation is not well tested. 2. The color temperature of the car lamp is not tested, the eyes of the person are in a tension state in the running process, and the eyes of the person have the weakest recognition capability on the color and the shape in dawn and dusk, so that the fatigue of the eyes is easily caused, and further, the physical fatigue is caused. 3. The irradiation width and distance are insufficient, and the irradiation width and the distance of many headlights are insufficient, so that a driver can hardly accurately see the obstacle and can have more time to react to the obstacle.
Disclosure of Invention
The embodiment of the invention provides a method and a device for testing a headlight of an automobile, which are used for solving the problem that the light test index is single in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the embodiment of the invention provides a method for testing an automobile headlight, which comprises the following steps:
acquiring first measurement information of a measured vehicle in a test scene, wherein the first measurement information comprises a plurality of measurement parameter values of the measured vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the measured vehicle;
acquiring driving information of the tested vehicle in the test scene at different measurement moments;
and determining the headlight performance parameters of the tested vehicle according to the first measurement information and the driving information.
Optionally, the measurement location includes a first measurement distance along a first direction, a second measurement distance along a second direction, and a third measurement distance along a third direction.
Optionally, after obtaining the first measurement information of the vehicle under test in the test scene, the method further includes:
generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, a measurement moment and the measurement parameter value, and the measurement moments in different measurement vectors are different;
and obtaining a first matrix according to a plurality of measurement vectors.
Optionally, determining the headlight performance parameter of the tested vehicle according to the first measurement information and the driving information includes:
generating a second matrix according to the driving information;
combining the first matrix and the second matrix according to the measurement moment to determine a headlight performance parameter matrix;
the headlight performance parameter matrix is used for representing the corresponding relation among the driving information, the measurement parameter value, the measurement position and the measurement time.
Optionally, the method further comprises:
when the running vehicle is arranged behind the tested vehicle, controlling the tested vehicle and the running vehicle behind to keep a preset safe vehicle distance.
Optionally, the method further comprises:
acquiring second measurement information of the tested vehicle after working in the test scene for a first preset time, wherein the second measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value;
and comparing the first measurement information with the second measurement information to determine the light attenuation information of the headlight of the tested vehicle.
Optionally, the measured parameter value includes at least one of an illumination intensity value, a junction temperature value, and a color temperature value.
Optionally, the driving information includes: the light mode of the tested vehicle, the speed of the tested vehicle and the position information of the tested vehicle.
The embodiment of the invention also provides an automobile headlight testing device, which comprises:
the system comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring first measurement information of a tested vehicle in a test scene, the first measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the tested vehicle;
the second acquisition module is used for acquiring the driving information of the tested vehicle in the test scene at different measurement moments;
and the determining module is used for determining the headlight performance parameters of the tested vehicle according to the first measurement information and the driving information.
Optionally, the apparatus further includes:
the generation module is used for generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, measurement time and measurement parameter values, and the measurement time in different measurement vectors is different;
and the processing module is used for obtaining a first matrix according to a plurality of measurement vectors.
The beneficial effects of the invention are as follows:
in the scheme, the method acquires the first measurement information and the driving information in the test scene, and determines the headlight performance parameter of the tested vehicle according to the first measurement information and the driving information, wherein the headlight performance parameter determined by the method has a plurality of parameter values, measurement positions and measurement moments related to the headlight of the tested vehicle, so that the problem of single light test index in the prior art is solved; the method provided by the invention can also acquire the lamplight performance index parameters of the tested vehicle in different scenes, and solves the problem of singleness of the test scene.
Drawings
FIG. 1 shows a schematic flow chart of a method for testing a headlight of an automobile according to an embodiment of the invention;
FIG. 2 shows one of the practical application test charts provided by the embodiment of the invention;
FIG. 3 shows a second embodiment of a test chart for practical use;
FIG. 4 shows a generated headlight illumination projection effect graph provided by an embodiment of the invention;
FIG. 5 is a schematic block diagram of an automotive headlamp testing device according to an embodiment of the present invention;
fig. 6 shows an application schematic diagram of an automotive headlamp testing device provided by an embodiment of the invention.
Reference numerals illustrate: 001-illumination intensity and color temperature sensors; 002-sensor test column; 003-test field area; 004-vehicle under test; 005-a data service center; 006-a cellular communication network; 007-client; 008-test report.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be noted that, existing automotive lamps are of many types, such as halogen lamps, xenon lamps, and laser lamps, and automotive lamps manufactured by various automotive manufacturers are different in brightness, irradiation distance, etc., resulting in a high safety risk of driving the automobile at night.
According to incomplete statistics, 60% of traffic accidents worldwide occur at night, wherein 22% of traffic accidents are in the case of poor visibility. Many accidents are caused by the fact that the width and the distance of illumination of a vehicle are limited, the color of illumination light is dim, a driver cannot see obstacles in a road clearly during driving, and the driver cannot brake and avoid the vehicle in time, so that the accidents occur.
However, there have been bottlenecks in testing automotive headlamps, such as the following: 1. the attenuation of the car lamp is not well tested, the car lamp has light attenuation, the light intensity of the car lamp is lower than the original light intensity after the car lamp is lighted for a period of time, generally, the halogen headlight light attenuation is generally attenuated to 70% in 10 months to one year, and the light attenuation is not used for night driving illumination after 50%. 2. The color temperature of the car lamp is not tested, the eyes are in a tension state for a long time in the running process, and the eyes of the people have the weakest recognition capability on the color and the shape in dawn and dusk, so that the eyes are extremely easy to fatigue, and further the body fatigue is caused. 3. The irradiation width and distance are insufficient, and the irradiation width and the distance of many headlights are insufficient, so that a driver can hardly accurately see the obstacle and can have more time to react to the obstacle.
The invention provides a method and a device for testing a headlight of an automobile aiming at the defects of the prior art. The method mainly comprises the steps of controlling a vehicle to run on a road at a certain speed, controlling light mode switching according to road condition information, obtaining illumination intensity values and color temperature values of automobile lights in three-dimensional spaces at different distances from a measuring point, and evaluating the performance of the automobile lights according to the illumination intensity values and the color temperature values.
Specifically, as shown in fig. 1, an alternative embodiment of the present invention provides a method for testing a headlight of an automobile, including:
step 100, obtaining first measurement information of a measured vehicle in a test scene, wherein the first measurement information comprises a plurality of measurement parameter values of the measured vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the measured vehicle;
in general, the way in which the headlight illuminates the object in front is to actively emit light from the headlight, and the light reflected by the object enters the eyes of the driver to make a corresponding judgment. The light of a car is actually a projection of a light beam on the bottom surface.
In this case, by arranging a testing device in advance on a testing road, the tested vehicle is controlled to run at a preset speed to the testing device in an opposite manner, the testing device obtains first measurement information of the tested vehicle in a testing scene, the first measurement information includes a plurality of measurement parameter values of the tested vehicle, each measurement parameter value is a parameter value related to a headlight of the tested vehicle, and the measurement parameter values may be an illumination intensity value, a color temperature value and the like; the first measurement information further comprises measurement positions and measurement moments corresponding to each measurement parameter value, namely, the measurement parameter values corresponding to the measured vehicle at different distances and different moments from the test device can be obtained by the test device, and the measurement parameter values of the vehicle lamp for illuminating the three-dimensional space can be solved.
The vehicle to be tested runs in a relative manner at a preset speed, preferably at a constant speed, so that the first measurement information of the vehicle to be tested in the test scene can be better obtained, and certainly, the preset speed can also run at a non-constant speed, and under the non-constant condition, the test device is used for analyzing and processing, and the accurate first measurement information can also be obtained, so that the preset speed is not limited.
Of course, first measurement information of the tested vehicle in a test scene is obtained, wherein the test scene can be one or any combination of straight road scene information, quarter turn scene information, S curve scene information, crosswalk scene information and vehicle meeting scene information. The described scenario is only a few examples, but other application scenarios are of course possible. The invention can arrange the same testing device for each scene, and a plurality of testing devices are arranged at different positions, so that the first measurement information of the tested vehicle in the testing scene can be obtained, the light performance index parameters of the tested vehicle in different scenes can be obtained, and the problem of different illumination in different scenes can be solved. The invention is not limited to the above-described method of arranging the test device, but the adoption of the above-described idea within a reasonable scope is also within the scope of protection of the invention.
It should be noted that, as shown in fig. 2, the testing device may include: the sensor test column 002 is arranged in a test site area 003, and the sensor test column 002 is provided with a data transmission module of a high-precision time service Global Navigation Satellite System (GNSS), wherein in order to reduce time delay and reliability of data transmission, the data transmission module adopts a fifth generation cellular mobile communication technology (5G) network to be more excellent. Of course, the vehicle 004 to be tested has a data transmission module for mounting a high-precision time service Global Navigation Satellite System (GNSS). The high-precision time service GNSS data transmission module is a wireless data transmission module with a high-precision timing function and a cm-level positioning function, can locally store data, and can also send the data to a data service center through a wireless communication technology.
Step 200, obtaining the running information of the tested vehicle in the test scene at different measurement moments;
in this embodiment, a high-precision time service GNSS data transmission module is installed in the vehicle under test, and the running information of the vehicle under test in the test scene at different measurement moments is obtained, where the running information may include the GNSS position coordinates and the vehicle speed of the vehicle under test at different moments, the current light mode of the vehicle, the manufacturer and the model of the vehicle, and so on.
And 300, determining the headlight performance parameters of the tested vehicle according to the first measurement information and the driving information.
In this embodiment, according to the acquired first measurement information and the running information, data association is performed to form a data set, so as to determine a headlight performance parameter of the tested vehicle, where the headlight performance parameter may be used to represent measurement parameter value performances of different distances, different heights, and different bandwidths of the headlight.
Further, according to the headlight performance parameters of the detected vehicle, the headlight irradiation projection effect diagram of the automobile can be drawn in various different modes such as a coordinate system, a drawing table and the like, and the headlight irradiation projection effect diagram can intuitively represent the performance parameters of the automobile headlight.
In the scheme, the method acquires the first measurement information and the driving information in the test scene, and determines the headlight performance parameter of the tested vehicle according to the first measurement information and the driving information, wherein the headlight performance parameter determined by the method has a plurality of parameter values, measurement positions and measurement moments related to the headlight of the tested vehicle, so that the problem of single light test index in the prior art is solved; the method provided by the invention can also acquire the lamplight performance index parameters of the tested vehicle in different scenes, and solves the problem of singleness of the test scene.
In the above-described embodiment of the present invention, the measurement positions include a first measurement distance in a first direction, a second measurement distance in a second direction, and a third measurement distance in a third direction.
In this embodiment, the first direction may be a direction in which the vehicle under test travels toward the test device, the second direction may be a direction perpendicular to the horizontal ground, and the third direction may be a direction perpendicular to the first direction and the second direction, respectively. For example: the first direction is the direction of the tested vehicle to the testing device, namely the generated first measuring distance is the distance between the tested vehicle and the testing device, the second measuring distance generated in the second direction is the height of the testing device, and the third measuring distance generated in the third direction is the width of the tested road. The invention solves the problem of single test lamplight data by acquiring the position information of each measurement parameter value.
In particular, the measured parameter values comprise at least one of an illumination intensity value, a junction temperature value and a color temperature value.
Wherein, the illumination intensity: the physical terminology refers to the luminous flux of visible light received per unit area. Simply called illuminance, in Lux or lx; the color temperature is a unit of measure representing the inclusion of a color component in a light ray. Theoretically, blackbody temperature refers to the color that an absolute blackbody assumes after heating from absolute zero (-273 ℃). After being heated, the black body gradually turns from black to red, turns yellow and turns white, and finally emits blue light. When heated to a certain temperature, the spectral components contained in the light emitted by the black body are called the color temperature at this temperature, and the measurement unit is "K" (kelvin). The junction temperature value is used for judging a parameter value of light attenuation information of the automobile headlight.
In the above embodiment of the present invention, after the step 100, the method further includes:
generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, a measurement moment and the measurement parameter value, and the measurement moments in different measurement vectors are different;
and obtaining a first matrix according to a plurality of measurement vectors.
In this embodiment, a plurality of measurement vectors are generated according to the obtained first measurement information, the measurement may record information values corresponding to different moments, different positions and different measurement parameter values, and a first matrix having a plurality of measurement vectors is generated according to the obtained information values, where the first matrix is a data matrix. For example: the testing device is arranged at a certain height from the ground, the current data matrix at the current moment is obtained through measurement of the testing device, the data matrix has different measurement parameter values, and GNSS positions corresponding to the measurement parameter values at intervals are recorded as L and current time T.
Specifically, as shown in fig. 3, the sensor test column 002 in the test apparatus is divided into a plurality of heights, i.e., H0, H1, H2 and H3 in fig. 3, and the measured parameter values of the tested vehicle 004 are preferably the illumination intensity E and the color temperature K. For example: when the first measurement distance (the distance L between the tested vehicle and the testing device) and the third measurement distance (the tested road W) are not divided, the generated data matrix is
On the basis of this, if a plurality of test devices are provided for the road, it is of course also possible to generate a plurality of data matrices, i.e.Wherein said->The method comprises the following steps:
that is, the generated first matrix may be generated according to the number of the test devices, and the first matrix is the plurality of data matrices, however, the second measurement distance (the height H between the test devices) may not be divided among the matrices, and the generated matrix may be divided by L or W, specifically, the generated matrix may be generated according to the position of the vehicle to be tested, and the matrix is only an example matrix.
In the above embodiment of the present invention, the steps 200 and 300 include:
generating a second matrix according to the driving information;
combining the first matrix and the second matrix according to the measurement moment to determine a headlight performance parameter matrix;
the headlight performance parameter matrix is used for representing the corresponding relation among the driving information, the measurement parameter value, the measurement position and the measurement time.
Further, the travel information includes: the light mode of the tested vehicle, the speed of the tested vehicle and the position information of the tested vehicle.
In this embodiment, a second matrix is generated based on the travel information, where the travel information includes: the method comprises the following steps of measuring a light mode of a vehicle, measuring the speed of the vehicle and measuring the position information of the vehicle, wherein the position information is the GNSS position of the vehicle; according to the obtained related data of the running information, the related data of the tested vehicle are recorded, and a second matrix omega (T) is generated according to GNSS position coordinates of different moments, the speed V of the tested vehicle and the current light mode M of the vehicle;
the second matrix ω (T) = [ mvl ].
Further, the first matrix is obtainedAnd a second matrix omega (T) for data combination by using the same measuring time T, and L and +.>The difference L is converted into a plane distance to obtain a vertical distance D n And level H n The comprehensive data form the headlight performance parameter matrix Γ (n,T) 。
The said
The headlight performance parameter matrix Γ (n,T) For representing the correspondence between the travel information, the measurement parameter values, the measurement position and the measurement time.
Further, according to said Γ (n，T) The data map the projected effect of the automotive headlamp illumination, as shown at a in fig. 4. Then Γ (n，T) The performance parameters of the automotive headlight are characterized. Similarly, further, the steps are repeated for different testing scenes such as straight-going roads, right-angle turns, S curves, crosswalk, oncoming vehicles and the like to test so as to obtain the automobile headlight performance parameter matrixes of different scenes.
Further, the automobile headlight testing method further comprises the following steps:
when the running vehicle is arranged behind the tested vehicle, controlling the tested vehicle and the running vehicle behind to keep a preset safe vehicle distance.
In this embodiment, in the actual application process, a situation that a running vehicle is located behind a vehicle to be tested is unavoidable, and at this time, the vehicle to be tested is controlled to maintain a preset safe vehicle distance from the running vehicle behind. Namely, the tested vehicle and the rear driving vehicle are controlled to keep enough distance, and preferably, when the speed per hour of the motor vehicle is 60 km, the preset safe vehicle distance is more than 60 meters; when the speed per hour is 80 km, the preset safe distance is more than 80 m, and the like.
Further, the automobile headlight testing method further comprises the following steps: when the tested vehicle is in a plurality of test scenes, the measurement information further comprises: and the tested vehicle is in a corresponding light mode under each test scene.
In this embodiment, different light modes of the driven vehicle in different scenes are obtained, where the light modes may include a low beam mode, a high beam mode, an automatic adjustment light height, and other different modes, and each application scene corresponds to one light mode and can be set according to actual requirements.
In another alternative embodiment of the present invention, the method for testing a headlight of a vehicle further comprises:
acquiring second measurement information of the tested vehicle after working in the test scene for a first preset time, wherein the second measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value;
and comparing the first measurement information with the second measurement information to determine the light attenuation information of the headlight of the tested vehicle.
The embodiment is different from the above embodiment in that the obtaining second measurement information of the tested vehicle after the first preset time of working in the test scene, where the measurement parameter value in the second test information includes: illumination intensity value, junction temperature value and color temperature value. And comparing the color temperature values in the first measurement information and the second measurement information to determine the light attenuation information of the detected vehicle headlight. After the vehicle headlight is continuously operated for a certain time, the light attenuation problem of the vehicle headlight after being used for a period of time can be obtained by comparing the front data with the rear data in the test.
In another embodiment of the present invention, as shown in fig. 6, further, a data processing analysis local client 007 is constructed, and the data of the testing device and the running position and speed data of the tested vehicle are associated through high-precision time by capturing the testing data from the server, so as to form a data set.
Specifically, the tested vehicle 004 and the testing device can be respectively provided with a high-precision time service GNSS data transmission module, and the high-precision time service GNSS data transmission module can transmit acquired test information to the data processing center 005 through the cellular communication network 006, namely, through the data integration processing system, a performance test report 008 of automobile lamplight is given. The test report is automatically generated according to the headlight performance parameters of the tested vehicle.
By the scheme, the blank of testing the whole automobile headlight in China is filled, the test report of the automobile headlight can be efficiently given, and various indexes can be flexibly adjusted due to the fact that the system adopts a central data architecture so as to meet various test requirements of the automobile headlight in the future.
In summary, the invention solves the problem of the light test of the whole vehicle by measuring the illumination intensity value and the color temperature value of different distances, and the test content covers the illumination intensity, the color temperature value and the like; furthermore, the test positions are set in different broadband in the road, so that the light intensity and color temperature values in different road widths can be obtained, and the problem of the lighting width of the vehicle lamp is solved; further, at the test position, sensors with different heights are arranged for measurement, so that the light intensity and color temperature values of the light irradiated at different heights are obtained, and the problem of the lighting height of the vehicle lamp is solved; further, by setting different test scenes such as straight running, right angle turning and S curve, passing through the crosswalk, oncoming traffic and the like, the light performance index parameters of the vehicle in different scenes are obtained, and the problem that the vehicle lamp system illuminates different scenes is solved.
As shown in fig. 5, an alternative embodiment of the present invention provides an automotive headlamp testing device, including:
a first obtaining module 10, configured to obtain first measurement information of a vehicle under test in a test scenario, where the first measurement information includes a plurality of measurement parameter values of the vehicle under test, and a measurement position and a measurement time corresponding to each measurement parameter value, where the measurement parameter values are parameter values related to a headlight of the vehicle under test;
the second obtaining module 20 is configured to obtain driving information of the vehicle under test in the test scene at different measurement moments;
a determining module 30, configured to determine a headlight performance parameter of the tested vehicle according to the first measurement information and the driving information.
The measurement positions include a first measurement distance in a first direction, a second measurement distance in a second direction, and a third measurement distance in a third direction.
Optionally, the apparatus further includes:
the generation module is used for generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, measurement time and measurement parameter values, and the measurement time in different measurement vectors is different;
and the processing module is used for obtaining a first matrix according to a plurality of measurement vectors.
Optionally, the apparatus further includes:
the second generation module is used for generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, measurement time and the measurement parameter value, and the measurement time in different measurement vectors is different;
and the obtaining module is used for obtaining a first matrix according to a plurality of measurement vectors.
Optionally, the apparatus further includes:
the third generation module is used for generating a second matrix according to the driving information;
the second determining module is used for combining the first matrix and the second matrix according to the measuring moment to determine a headlight performance parameter matrix;
the headlight performance parameter matrix is used for representing the corresponding relation among the driving information, the measurement parameter value, the measurement position and the measurement time.
Optionally, the apparatus further includes:
and the control module is used for controlling the tested vehicle to keep a preset safe vehicle distance with the rear running vehicle when the running vehicle is arranged behind the tested vehicle.
Optionally, the apparatus further includes:
the third acquisition module is used for acquiring second measurement information of the tested vehicle after the first preset time is worked in the test scene, wherein the second measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value;
and the third determining module is used for comparing the first measurement information with the second measurement information and determining the light attenuation information of the detected vehicle headlight.
The measured parameter value includes at least one of an illumination intensity value, a junction temperature value, and a color temperature value.
The travel information includes: the light mode of the tested vehicle, the speed of the tested vehicle and the position information of the tested vehicle.
In the above embodiment, a data processing and analyzing local client may be further constructed, and the data of the testing device and the running position and speed data of the tested vehicle are correlated by capturing the testing data from the server and by high-precision time, so as to form a data set.
Specifically, as shown in fig. 6, further, a data processing analysis local client 007 is constructed, and the data of the testing device and the running position and speed data of the tested vehicle are correlated through high-precision time by capturing the testing data from the server, so as to form a data set.
Specifically, the tested vehicle 004 and the testing device can be respectively provided with a high-precision time service GNSS data transmission module, and the high-precision time service GNSS data transmission module can transmit acquired test information to the data processing center 005 through the cellular communication network 006, namely, through the data integration processing system, a performance test report 008 of automobile lamplight is given. The test report is automatically generated according to the headlight performance parameters of the tested vehicle.
In summary, the headlight performance parameters determined by the method and the device provided by the invention are that the illumination intensity value and the color temperature value of the automobile light in the three-dimensional space at different distances from the measuring point are obtained, and the performance of the automobile light is evaluated according to the illumination intensity value, the color temperature value and the light attenuation value, so that the problem of single light test index in the prior art is solved; the method provided by the invention can also acquire the lamplight performance index parameters of the tested vehicle in different scenes, and solves the problem of singleness of the test scene.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.
Claims (7)
1. A method of testing a headlight of an automobile, comprising:
acquiring first measurement information of a measured vehicle in a test scene, wherein the first measurement information comprises a plurality of measurement parameter values of the measured vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the measured vehicle; after obtaining the first measurement information of the tested vehicle in the test scene, the method further comprises the following steps: generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, a measurement moment and the measurement parameter value, and the measurement moments in different measurement vectors are different; obtaining a first matrix according to a plurality of measurement vectors;
acquiring driving information of the tested vehicle in the test scene at different measurement moments;
determining a headlight performance parameter of the tested vehicle according to the first measurement information and the driving information;
wherein, the step of determining the headlight performance parameter of the tested vehicle comprises the following steps:
generating a second matrix according to the driving information;
combining the first matrix and the second matrix according to the measurement moment to determine a headlight performance parameter matrix; the headlight performance parameter matrix is used for representing the corresponding relation among the driving information, the measurement parameter value, the measurement position and the measurement time.
2. The method of claim 1, wherein the measurement locations include a first measurement distance in a first direction, a second measurement distance in a second direction, and a third measurement distance in a third direction;
the first direction is the direction in which the vehicle to be tested runs to the testing device, the second direction is the direction perpendicular to the horizontal ground, and the third direction is the direction perpendicular to the first direction and the second direction respectively.
3. The automotive headlamp testing method of claim 1, further comprising:
when the running vehicle is arranged behind the tested vehicle, controlling the tested vehicle and the running vehicle behind to keep a preset safe vehicle distance.
4. The automotive headlamp testing method of claim 1, further comprising:
acquiring second measurement information of the tested vehicle after working in the test scene for a first preset time, wherein the second measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value;
and comparing the first measurement information with the second measurement information to determine the light attenuation information of the headlight of the tested vehicle.
5. The method of claim 4, wherein the measured parameter values include at least one of an illumination intensity value, a junction temperature value, and a color temperature value.
6. The automobile headlight testing method according to claim 1, wherein the running information comprises: the light mode of the tested vehicle, the speed of the tested vehicle and the position information of the tested vehicle.
7. An automotive headlamp testing device, comprising:
the system comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring first measurement information of a tested vehicle in a test scene, the first measurement information comprises a plurality of measurement parameter values of the tested vehicle, and measurement positions and measurement moments corresponding to each measurement parameter value, and the measurement parameter values are parameter values related to a headlight of the tested vehicle;
the second acquisition module is used for acquiring the driving information of the tested vehicle in the test scene at different measurement moments;
the determining module is used for determining the headlight performance parameters of the tested vehicle according to the first measurement information and the driving information;
wherein the apparatus further comprises:
the generation module is used for generating a plurality of measurement vectors according to the first measurement information, wherein each measurement vector comprises a measurement position, measurement time and measurement parameter values, and the measurement time in different measurement vectors is different;
the processing module is used for obtaining a first matrix according to a plurality of measurement vectors;
wherein the apparatus further comprises:
the third generation module is used for generating a second matrix according to the driving information;
the second determining module is used for combining the first matrix and the second matrix according to the measuring moment to determine a headlight performance parameter matrix;
the headlight performance parameter matrix is used for representing the corresponding relation among the driving information, the measurement parameter value, the measurement position and the measurement time.
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