Special test system for automobile light

Abstract

The invention relates to a special test system for automobile light, and relates to the technical field of automobile light test. Comprising a hardware structure part and a software analysis control part, the hardware structure part comprises an upper layer simulation platform and a lower layer simulation platform which are arranged in an isolation room and can perform three-axis movement, the upper layer simulation platform is used for simulating a lamp installation position, and the lower layer simulation platform is used for simulating a viewpoint position; and the software analysis control part comprises a parameter input module, an action control module, a data acquisition module and an adjustment control module. According to the method, positioning is carried out according to the lamps of different vehicle types and viewpoint position parameters of the lamps, the lamp parameters of the different vehicle types are matched, light distribution analysis of the whole vehicle is carried out, the release period of a new vehicle type is shortened, and time and cost consumption caused by development of a size clamp is omitted; and a software control analysis part is used for adjusting the light emitting power of the lamp in two modes based on impressions of different viewpoint positions, so that the light distribution effect of the whole vehicle is adjusted under the conditions of a single lamp and a combined lamp.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lighting testing, in particular to a special automobile lighting testing system. Background Art

[0002] The design and application of lighting in car interiors has a long history. With the development of the automotive industry, people have different requirements for the comfort and scene diversity of interior lighting. To meet this requirement, it is necessary to conduct lighting tests before new models leave the factory. The interior ceiling lights of vehicles include the front ceiling lights, left and right side ceiling lights, and rear ceiling lights. The position, angle and other design parameters of the three ceiling lights of each model need to be slightly changed. The whole vehicle lighting analysis is required, and the development workload is huge. Different fixtures need to be developed for different vehicle sizes, and the investment in R&D resources accounts for a high proportion. In addition, the development cycle is relatively long, which is difficult to match the needs of the fast-paced automotive market. To this end, we provide a special test system for automotive lighting. Summary of the invention

[0003] The object of the present invention is to provide a special testing system for automobile lighting.

[0004] The technical problems solved by the present invention are:

[0005] (1) In the prior art, due to the large number of vehicle models and lamp position parameters, the development of fixtures of different sizes is required to perform vehicle lighting analysis, which is time-consuming, labor-intensive and costly.

[0006] (2) The light distribution analysis in the prior art sets a static threshold for a single lamp and a single viewpoint, lacking comprehensive consideration of each viewpoint and combination of lamps. In addition, the coupling between viewpoints and lamps is strong during the comprehensive consideration process, making it difficult to conduct precise testing and regulation.

[0007] The present invention can be implemented by the following technical scheme: a special test system for automobile lighting, characterized in that it includes a hardware structure part and a software analysis and control part, the hardware structure part includes an isolation room, and the isolation room is provided with upper and lower layers of simulation platforms that can move in three axes, the upper simulation platform is used to simulate the installation position of the ceiling light on the automobile roof, and the lower simulation platform is used to simulate the H point position and the viewpoint position required by different vehicle specifications;

[0008] The software analysis and control part includes a parameter entry module, a parameter entry module, an action control module, a data acquisition module and an adjustment control module. The parameter entry module enters the specification parameters of various vehicle models and the position parameters and angle parameters of their internal lamps to construct a test file for the corresponding vehicle model; the action control module sets the coordinates according to the test file and drives the upper simulation platform and the lower simulation platform to make the lamps and the high-precision illuminance tester at the corresponding coordinates; the data acquisition module collects and records the light intensity detected by the high-precision illuminance tester at different simulated occupant positions; the adjustment control module adjusts and controls the brightness of the lamps in the single light test mode and the combined light test mode respectively, so that the illumination range at different occupant positions is in the best visual state.

[0009] A further technical improvement of the present invention is that: the output ends of the upper and lower simulation platforms are respectively provided with a product movement positioning module and a detection movement positioning module, and the two modules have the same transmission structure, both of which include a pneumatic quick-release assembly fixedly connected to the output point of the simulation platform, and a universal rotating table is fixedly installed through the pneumatic quick-release assembly;

[0010] A product positioning platform is fixed on the output end of the universal rotating table on the product mobile positioning module, and the lamp is fixedly installed on the product positioning platform; a high-precision illumination tester is fixedly installed on the output end of the universal rotating table on the detection mobile positioning module.

[0011] A further technical improvement of the present invention is that the pneumatic quick-release assembly adopts a zero-point positioning pneumatic chuck, and a positioning calibration ball is fixedly installed on the pneumatic quick-release assembly. The CCD visual calibration module arranged in the isolation room cooperates with the positioning calibration ball to calibrate the position of the lamp and the high-precision illumination tester, and obtain the relative coordinates of the lamp and the high-precision illumination tester relative to the absolute origin of the system.

[0012] A further technical improvement of the present invention is that the illumination range with the best viewing experience in the adjustment control module is calibrated based on expert experience and data from a large number of experiments, and the illumination range with the best viewing experience for lamps in the same position at different viewpoints is different, and the illumination range value is negatively correlated with the distance between the lamp and the viewpoint.

[0013] A further technical improvement of the present invention is that in the single light test mode, the adjustment control module positions the lamp at a specific installation position, and the specific steps of adjusting and recording the luminous power of the lamp include:

[0014] S11, setting an initial power and lighting the corresponding lamp;

[0015] S12, collecting the light intensity at different occupant viewpoints, and comparing it with the illumination range with the best viewing experience at the corresponding position;

[0016] S13, the distance between the lamp and the viewpoint is the Euler distance calculated using the Euler formula, and the ratio of each lamp-viewpoint distance to the sum of all distances is calculated, and the ratio result is used as the voting weight value of each viewpoint position;

[0017] S14. Calculate the adjustment factor for the luminous power of the lamp, the formula is:

[0018]

[0019] Among them, Δμ represents the adjustment factor and has a sign attribute; [L i1 , L i2 ] represents the illumination interval with the best viewing experience for the occupant at the i-th viewpoint, L i is the light intensity collected at the i-th viewpoint; α i P represents the mark symbol corresponding to the i-th viewpoint, which can be -1, 0 or +1; i represents the voting weight value corresponding to the i-th viewpoint, Q represents the current luminous power of the lamp, and η represents the luminous efficiency of the lamp;

[0020] S15. When |Δμ is not less than the set adjustment threshold, let Q'=Q*(1+Δμ), and repeat the above steps with Q' as the lamp power; when |Δμ is less than the set adjustment threshold, take the current power as the final luminous power of the lamp.

[0021] A further technical improvement of the present invention is that in the combined lighting test mode, after the adjustment control module positions at least two lamps at corresponding positions, the specific steps of adjusting and recording the luminous power of the lamps include:

[0022] S21, setting an initial power and lighting at least two lamps;

[0023] S22. Draw the light distribution curve of relevant lamps;

[0024] S23. Calculate the total illumination intensity L of the combined lamp at the corresponding viewpoint i , that is, L i =∑L im ;

[0025] Among them, L im Indicates the light intensity contribution value of the m-th lamp at the corresponding i-th viewpoint;

[0026] S24, according to the calculated value in S23, the proportion of the contribution value of each lamp in the combined lamp at a certain viewpoint to the light intensity at the viewpoint can be determined, and the proportion is used as the illumination weight coefficient of each lamp at the viewpoint; the absolute value of the difference between the total light intensity of the viewpoint and the median of the illumination interval with the best viewing experience and the ratio of the median of the interval are calculated, and the result is defined as the deviation coefficient;

[0027] S25, allocating the deviation coefficient according to the illumination weight coefficient, obtaining the power adjustment factor of each lamp, and setting the adjustment direction coefficient;

[0028] Compare the light intensity at the viewpoint with the illumination interval with the best viewing experience, and mark the comparison results below, within, and above the interval as "-", "0", and "+", respectively, and adjust the direction coefficient to take values ​​between -1, 0, and +1, respectively;

[0029] S26, traverse all five viewpoints in turn and repeat the above steps, so that each lamp obtains five sets of power values ​​to be adjusted, and the average value is taken as the final adjusted power;

[0030] S27, lighting the combined lamp according to the final adjusted power, and judging whether it is in the illumination range with the best viewing experience by collecting and comparing the light intensity; if it exceeds, gradually changing the power of the lamp closest to it, so that the collected data of the viewpoint falls within the range, until the collected data of all viewpoints fall within the range;

[0031] S28. Record the finally determined power value as the luminous power of the relevant lamps in the combined lighting state.

[0032] A further technical improvement of the present invention is that the process of drawing the light distribution curve includes:

[0033] The light source in the lamp is taken as the center of the sphere, and the section through the center of the sphere and the optical axis is taken as the plane for drawing the light distribution curve;

[0034] The light source is taken as the origin of the polar coordinates, the optical axis is taken as the 0 axis, and the radius of the circle represents the magnitude of the luminous intensity;

[0035] On this polar coordinate plane, the luminous intensity of the lamp at each angle starting from 0 is plotted on the graph, which becomes the complete light distribution curve of the lamp.

[0036] A further technical improvement of the present invention is that the calculation formula for the contribution value of the illumination intensity of each lamp at the corresponding viewpoint is:

[0037]

[0038] Among them, Q m Indicates the current luminous power of the mth lamp, k im It represents the light distribution coefficient of the mth lamp in the direction of the i-th viewpoint. The value of this coefficient can be determined according to the position of the viewpoint in the light distribution curve; D im represents the distance between the mth lamp and the i-th viewpoint, and η represents the luminous efficiency of the lamp.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The present invention sets up two layers of simulation platforms with three-axis motion, and uses a product mobile positioning module and a detection mobile positioning module to move the lamps and the high-precision illumination detector, and positions the lamps and their viewpoints according to the position parameters of the lamps of different models. Therefore, the lamp parameters of different models can be matched at will, and the whole vehicle lighting distribution analysis can be quickly performed, which greatly shortens the release cycle of new models and saves the time and cost consumption caused by the development of size fixtures. It has high flexibility and a large matching range.

[0041] 2. The present invention simulates lamps and viewpoints, and adopts two modes, a single light test mode and a combined light test mode, to test and adjust the luminous power of the lamp in the single light and combined light conditions, respectively, so that the light intensity at different occupant viewpoints is within the illumination range with the best viewing experience; in the adjustment process of the single light test mode, the adjustment factor of the lamp luminous power is calculated by allocating voting weights from different viewpoints, so that the viewing experience from different viewpoints is comprehensively considered during the adjustment process, the entire adjustment process has data support, and a loop termination condition is set, so as to find the final optimal luminous power of the lamp; in the adjustment process of the combined light test mode, a light distribution curve is introduced, and weights are allocated according to the light intensity contribution of each lamp at the corresponding viewpoint, so that the lamps are adjusted separately according to the weights based on the light intensity deviation value, thereby eliminating the high coupling between the lamps and realizing the adjustment of the lighting effect of the whole vehicle under the combined lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0043] Figure 1 It is a schematic diagram of the structure of the hardware architecture of the present invention;

[0044] Figure 2 It is a perspective diagram of the internal structure of the hardware architecture of the present invention;

[0045] Figure 3 This is a schematic diagram of the connection structure of the product mobile positioning module of the present invention;

[0046] Figure 4 This is a schematic diagram of the connection structure of the detection mobile positioning module of the present invention;

[0047] Figure 5 This is a system block diagram of the software analysis control part of the present invention.

[0048] In the figure: 1. Isolation room; 2. Light source module; 3. Upper simulation platform; 4. Lower simulation platform; 5. Product movement and positioning module; 501. Pneumatic quick release component 1; 502. Universal rotating table 1; 503. Product positioning carrier; 6. Detection movement and positioning module; 601. Pneumatic quick release component 2; 602. Universal rotating table 1; 603. High-precision illumination detector 603. DETAILED DESCRIPTION

[0049] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0050] See also Figure 1-5 As shown, a special test system for automobile lighting includes a hardware architecture part and a software analysis and control part;

[0051] The hardware architecture part includes a closed isolation room 1, which is mainly used to isolate the influence of the external environment such as light, sound, wind resistance, etc.; the side walls and top of the isolation room 1 are provided with a light source module 2 for simulating the brightness of the ambient light. The light source module 2 adopts a uniformly distributed LED dot matrix light source to make the light as evenly distributed as possible.

[0052] The isolation room 1 is provided with a simulation platform with two layers that can move in three axes. Among them, the upper simulation platform 3 is used to simulate the car roof and the installation position of the corresponding car ceiling light, and the lower simulation platform 4 is used to simulate the seat positions of different car models, and then simulate the H-point position and coordinates required by the car model specifications. According to the H-point position, the viewpoint position (the symmetrical center position of the binocular eyes) of an average adult (height 175 cm) can be determined.

[0053] The simulation platform takes the Y direction as the axial extension direction of the automobile, and has two Y-direction moving modules arranged in parallel, at least one X-direction moving module slidably arranged between the two Y-direction moving modules, and at least one Z-direction moving module slidably arranged on the X-direction moving module; in this embodiment, the moving module generally adopts a screw drive module, and may also adopt a synchronous belt drive module.

[0054] Located in the upper simulation platform 3, a product moving and positioning module 5 for clamping and moving the lamp is fixed at the output end of the Z-direction moving module;

[0055] The product moving and positioning module 5 includes a pneumatic quick-release component 501 directly fixed to the output end of the Z-axis moving module, specifically a zero-point positioning pneumatic chuck, and a universal rotating table 502 is fixedly installed through the pneumatic quick-release component 501. A product positioning platform 503 is fixed to the output end of the universal rotating table 502, and the lamp is fixedly installed on the product positioning platform 503. The zero-point positioning pneumatic chuck and the universal rotating table 502 can cooperate to position the lamp at any angle.

[0056] Located in the lower simulation platform 4, the output end of the Z-direction moving module is fixed with a detection moving positioning module 6. Similarly, the detection moving positioning module 6 is installed with a universal rotating table 602 through a pneumatic quick-release assembly 601. The output end of the universal rotating table 602 is fixed with a high-precision illumination detector 603.

[0057] Positioning calibration balls are installed on the above-mentioned pneumatic quick-release components, and a CCD visual calibration module is set in the isolation room 1 to calibrate and locate the positions of the lamps and the high-precision illumination detector 603 respectively, and obtain the relative coordinates of the lamps and the high-precision illumination detector 603 relative to the absolute origin of the system.

[0058] Technical terminology: H-point refers to the connection point between the human torso and the thigh in a two-dimensional or three-dimensional human model template, i.e., the hip point. In the human body template, it is the hip joint, and this point is often used as the positioning reference point when determining the position of the cab layout related tools in the vehicle body.

[0059] The software analysis and control part includes parameter entry module, action control module, data acquisition module and adjustment control module;

[0060] The parameter input module inputs the specification parameters of various vehicle models and the position parameters and angle parameters of their internal lamps, and builds a test file for the current vehicle model, which is convenient for recording and analyzing the test process and results of the vehicle model;

[0061] The motion control module sets the origin coordinates according to the test file constructed by the parameter input module, and drives the three-way moving module of the upper simulation platform 3 and the universal rotating table 501 to move based on the vehicle specifications and the position parameters and angle parameters of the lamps in the vehicle, so that the lamps on the product positioning platform 503 reach the specified coordinate position and angle state, thereby simulating the position and posture of the lamps when they are installed on the vehicle. It should be noted that a single lamp can be installed and tested separately, or multiple lamps can be installed and tested together, thus forming two test modes: single light test and combined light test;

[0062] At the same time, the motion control module also drives the three-way moving module of the lower simulation platform 4 and the universal rotating table 2 601 to move according to the parameter input module, so as to simulate the seat position of the corresponding vehicle model and the required H point position, and the high-precision illumination tester 603 performs data testing of the light intensity at the simulated position;

[0063] In the individual lighting test and the combined lighting test, the data acquisition module is used to collect the light intensity detected by the high-precision illuminance tester at different simulated occupant positions and make associated records. The adjustment control module adjusts the luminous power of the lamp so that the illuminance provided by the lamp at the corresponding position is in the optimal illuminance range for the corresponding occupant's perception, and records the luminous power value of the lamp at this time.

[0064] The above-mentioned illumination range with the best viewing experience for the occupants is calibrated based on expert experience and data from a large number of experiments. The illumination range with the best viewing experience for the lamp in the same position is different from different viewpoints, and the range value is generally negatively correlated with the distance between the lamp and the viewpoint.

[0065] In the single light test mode, the adjustment control module positions the lamp at the corresponding installation position, sets the voting weight according to the distance of the luminous effect radiation range of the lamp, and adjusts the brightness of the lamp. The specific steps are as follows:

[0066] First, set an initial power and light up the corresponding lamp;

[0067] Subsequently, the high-precision illumination tester 603 is placed at the simulated positions of different passengers to collect illumination intensity, and the illumination intensity data collected at each simulated position is compared with the illumination interval with the best visual perception at the corresponding position, and the comparison results below, within, and above the interval are marked as "-", "0", and "+" respectively;

[0068] The distance between the position of the lamp and the viewpoint is calculated using the Euler formula, and the ratio of each Euler distance to the sum of the distances is calculated, so that the ratio result is used as the voting weight value assigned to the corresponding Euler distance;

[0069] The adjustment factor of the luminous power of the lamp is calculated according to the marking symbol and the voting weight value, and the calculation formula is:

[0070]

[0071] Among them, Δμ represents the adjustment factor, and it has its own sign; a car compartment generally has five seats, corresponding to five viewpoints; [L i1 , L i2 ] represents the illumination interval with the best viewing experience for the occupant at the i-th viewpoint, L i is the data collected by the high-precision illumination tester 603 at the i-th viewpoint, αi represents the mark symbol corresponding to the i-th viewpoint, that is, the adjustment direction coefficient, which can be -1, 0, and +1; P i represents the voting weight value corresponding to the i-th viewpoint, Q represents the current luminous power of the lamp, and η represents the luminous efficiency of the lamp.

[0072] Set the loop termination condition: if and only if |Δμ is less than the set adjustment threshold, record the luminous power of the lamp as the final luminous power value; otherwise, let Q'=Q*(1+Δμ), and re-collect and calculate the light intensity of each position mentioned above.

[0073] Similarly, in the combined lighting test, the adjustment control module sets an initial power and lights up at least two lamps;

[0074] Draw the light distribution curve of relevant lamps, specifically:

[0075] The light source in the lamp is taken as the center of the sphere, and the section through the center of the sphere and the optical axis is taken as the plane for drawing the light distribution curve;

[0076] The light source is taken as the origin of the polar coordinates, the optical axis is taken as the 0 axis, and the radius of the circle represents the magnitude of the luminous intensity;

[0077] On this polar coordinate plane, the luminous intensity of the lamp at each angle starting from 0 is plotted on the graph, which becomes the complete light distribution curve of the lamp.

[0078] Calculate the total illumination intensity of the combined lamp at the corresponding viewpoint, i.e. L i =∑L im , where L im represents the light intensity contribution value of the mth lamp at the corresponding i-th viewpoint, and Q m Indicates the current luminous power of the mth lamp, k im It represents the light distribution coefficient of the mth lamp in the direction of the i-th viewpoint. The value of this coefficient can be determined according to the position of the viewpoint in the light distribution curve; D im Represents the distance between the mth luminaire and the i-th viewpoint.

[0079] Calculate the proportion of the light intensity contribution value of each lamp in the combined lamps at a certain viewpoint, determine the illumination weight coefficient of each lamp relative to the viewpoint according to the proportion, and then calculate the deviation coefficient according to the median of the total light intensity of the viewpoint and the illumination interval with the best viewing experience, that is, the ratio of the absolute value of the difference between the two to the median of the interval;

[0080] The deviation coefficient is distributed according to the illumination weight coefficient to obtain the power adjustment factor of each lamp. The adjustment direction is related to whether the light intensity at the viewpoint position is in the illumination range with the best viewing experience. The comparison results below, within and above the range are marked as "-", "0" and "+", respectively. The adjustment direction coefficient takes values ​​of -1, 0 and +1 respectively.

[0081] Traverse the five viewpoints in turn and adjust according to the above operations, so that each lamp obtains five sets of power values ​​to be adjusted, and the average value is taken as the final adjusted power;

[0082] The combined lamp is lit with the final adjusted power and data is collected and compared through the high-precision illumination tester 603 at each viewpoint to determine whether the illumination intensity of each viewpoint is within the illumination range with the best viewing experience. If there is a viewpoint beyond the range, the power of the lamp closest to it is gradually changed to make the collected data of the viewpoint fall within the range until the collected data of all viewpoints fall within the range;

[0083] Finally, the final determined power value is recorded as the luminous power of the relevant lamps in the combined lighting state.

[0084] The regulation control module records the final power value in the test file and sends it to the display module for display, so that the staff can understand the test results at any time.

[0085] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A special test system for automobile lighting, characterized in that: The method comprises a hardware structure part and a software analysis and control part, wherein the hardware structure part comprises an isolation room (1), wherein upper and lower layers of simulation platforms capable of three-axis movement are arranged in the isolation room (1), wherein the upper layer simulation platform (3) is used to simulate the installation position of a ceiling light on a car roof, and the lower layer simulation platform (4) is used to simulate the H point position and viewpoint position required for different vehicle models and specifications; The software analysis and control part comprises a parameter input module, an action control module, a data acquisition module and an adjustment control module. The parameter input module inputs the specification parameters of various vehicle models and the position parameters and angle parameters of the internal lamps to construct a test file of the corresponding vehicle model; the action control module sets coordinates according to the test file and drives the upper simulation platform (3) and the lower simulation platform (4) to make the lamps and the high-precision illumination tester (603) be at corresponding coordinates; the data acquisition module collects and records the light intensity detected by the high-precision illumination tester (603) at different simulated occupant positions; the adjustment control module adjusts and controls the brightness of the lamps in a single light test mode and a combined light test mode respectively, so that the illumination intervals at different occupant positions are in an optimal visual state.

2. The automotive lighting test system according to claim 1, characterized in that: The output ends of the upper and lower simulation platforms are respectively provided with a product movement positioning module (5) and a detection movement positioning module (6), and the two modules have the same transmission structure, both comprising a pneumatic quick-release assembly fixedly connected to the output point of the simulation platform, and a universal rotating table is fixedly installed through the pneumatic quick-release assembly; A product positioning platform (503) is fixedly mounted on the output end of the universal rotating table on the product moving positioning module (5), and the lamp is fixedly mounted on the product positioning platform (503); and a high-precision illumination tester (603) is fixedly mounted on the output end of the universal rotating table on the detection moving positioning module (6).

3. The automotive lighting test system according to claim 2, characterized in that: The pneumatic quick-release assembly adopts a zero-point positioning pneumatic chuck, and a positioning calibration ball is fixedly installed on the pneumatic quick-release assembly. The CCD visual calibration module arranged in the isolation room (1) cooperates with the positioning calibration ball to calibrate the position of the lamp and the high-precision illumination tester (603), and obtains the relative coordinates of the lamp and the high-precision illumination tester (603) relative to the absolute origin of the system.

4. The automotive lighting test system according to claim 1, characterized in that: The optimal illumination range in the adjustment control module is calibrated based on expert experience and data from a large number of experiments, and the optimal illumination range for the same lamp at different viewpoints is different, and the illumination range value is negatively correlated with the distance between the lamp and the viewpoint.

5. The automobile lighting dedicated test system according to claim 4, characterized in that: In the single light test mode, the adjustment control module positions the lamp at a specific installation position, and the specific steps of adjusting and recording the luminous power of the lamp include: S11, setting an initial power and lighting the corresponding lamp; S12, collecting the light intensity at different occupant viewpoints, and comparing it with the illumination range with the best viewing experience at the corresponding position; S13, the distance between the lamp and the viewpoint is the Euler distance calculated using the Euler formula, and the ratio of each lamp-viewpoint distance to the sum of all distances is calculated, and the ratio result is used as the voting weight value of each viewpoint position; S14. Calculate the adjustment factor for the luminous power of the lamp, the formula is: Among them, Δμ represents the adjustment factor and has a sign attribute; [L i1 , L i2 ] represents the illumination interval with the best viewing experience for the occupant at the i-th viewpoint, L i is the light intensity collected at the i-th viewpoint; α i P represents the mark symbol corresponding to the i-th viewpoint, which can be -1, 0 or +1; i represents the voting weight value corresponding to the i-th viewpoint, Q represents the current luminous power of the lamp, and η represents the luminous efficiency of the lamp; S15. When |Δμ is not less than the set adjustment threshold, let Q'=Q*(1+Δμ), and repeat the above steps with Q' as the lamp power; when |Δμ is less than the set adjustment threshold, take the current power as the final luminous power of the lamp.

6. The automobile lighting dedicated test system according to claim 4, characterized in that: In the combined lighting test mode, after the adjustment control module positions at least two lamps at corresponding positions, the specific steps of adjusting and recording the luminous power of the lamps include: S21, setting an initial power and lighting at least two lamps; S22. Draw the light distribution curve of relevant lamps; S23. Calculate the total illumination intensity L of the combined lamp at the corresponding viewpoint i , that is, L i =∑L im ; Among them, L im Indicates the light intensity contribution value of the m-th lamp at the corresponding i-th viewpoint; S24, according to the calculated value in S23, the proportion of the contribution value of each lamp in the combined lamp at a certain viewpoint to the light intensity at the viewpoint can be determined, and the proportion is used as the illumination weight coefficient of each lamp at the viewpoint; the absolute value of the difference between the total light intensity of the viewpoint and the median of the illumination interval with the best viewing experience and the ratio of the median of the interval are calculated, and the result is defined as the deviation coefficient; S25, allocating the deviation coefficient according to the illumination weight coefficient, obtaining the power adjustment factor of each lamp, and setting the adjustment direction coefficient; Compare the light intensity at the viewpoint with the illumination interval with the best viewing experience, and mark the comparison results below, within, and above the interval as "-", "0", and "+", respectively. The adjustment direction coefficient takes values ​​between -1, 0, and +1, respectively. S26, traverse all five viewpoints in turn and repeat the above steps, so that each lamp obtains five sets of power values ​​to be adjusted, and the average value is taken as the final adjusted power; S27, lighting the combined lamp according to the final adjusted power, and judging whether it is in the illumination range with the best viewing experience by collecting and comparing the light intensity; if it exceeds, gradually changing the power of the lamp closest to it, so that the collected data of the viewpoint falls within the range, until the collected data of all viewpoints fall within the range; S28. Record the finally determined power value as the luminous power of the relevant lamps in the combined lighting state.

7. The automobile lighting test system according to claim 6, characterized in that: The drawing process of the light distribution curve includes: The light source in the lamp is taken as the center of the sphere, and the section through the center of the sphere and the optical axis is taken as the plane for drawing the light distribution curve; The light source is taken as the origin of the polar coordinates, the optical axis is taken as the 0 axis, and the radius of the circle represents the magnitude of the luminous intensity. On this polar coordinate plane, the luminous intensity of the lamp at each angle starting from 0 is plotted on the graph, which becomes the complete light distribution curve of the lamp.

8. The automobile lighting test system according to claim 6, characterized in that: The calculation formula for the contribution value of the illumination intensity of each lamp at the corresponding viewpoint is: Among them, Q m Indicates the current luminous power of the mth lamp, k im It represents the light distribution coefficient of the mth lamp in the direction of the i-th viewpoint. The value of this coefficient can be determined according to the position of the viewpoint in the light distribution curve; D im represents the distance between the mth lamp and the i-th viewpoint, and η represents the luminous efficiency of the lamp.

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