LED car lamp operation monitoring system based on data analysis

Abstract

The application relates to the technical field of LED vehicle lamp operation monitoring, and discloses an LED vehicle lamp operation monitoring system based on data analysis, which comprises the following steps: in the night road congestion state, the spatial position of the vehicle in the forward lane is identified, the cooperative vehicle set is screened, and the cooperative communication connection is established; the brightness disturbance instruction is sent to the cooperative vehicle set, the brightness of the LED vehicle lamp is collected in real time by using the light intensity sensor, the brightness deviation is calculated based on the ideal brightness obtained through the experiment; the direct current voltage of the LED vehicle lamp when the vehicle executes the brightness disturbance instruction is collected in real time, the power supply performance index is calculated in combination with the brightness deviation; the lighting width of each vehicle is distributed according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, the brightness of the LED vehicle lamp is calculated based on the lighting width; the cooperative control instruction is sent to the vehicles in the cooperative vehicle set, the cooperative lighting in the road congestion state is realized, the real-time power supply performance evaluation and the lighting width distribution of the cooperative vehicle set are realized, and energy saving and safety are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED vehicle lamp operation monitoring, in particular to an LED vehicle lamp operation monitoring system based on data analysis. BACKGROUND

[0002] In the night road congestion state, through the coordination control of each lighting system of the cooperative vehicles, the overall lighting effect of the road can be improved, the light pollution and glare phenomenon can be effectively reduced, and the visual clarity and driving safety of the drivers can be improved. Through intelligent distribution of lighting width and brightness, the lighting coverage between vehicles is optimized, the visual interference caused by traffic congestion is alleviated, and a more efficient and safe night traffic environment is realized.

[0003] The existing vehicle lighting control is mostly in independent adjustment mode, lacks a coordination mechanism, causes uneven lighting distribution in the night multi-vehicle environment, easily produces overlapping lighting and blind area, and reduces the overall lighting efficiency. In addition, the traditional technology usually does not consider the power supply performance difference between vehicles and the road geometric characteristics, and it is difficult to realize dynamic optimization and configuration of lighting resources. Especially in complex road conditions and congestion environment, the light intensity adjustment lacks real-time feedback and fine control, which easily causes the vehicle lighting to be too strong or insufficient, and increases the safety risk. At the same time, the control of the illumination shape of the vehicle light is lacking, it is difficult to accurately match the road width and vehicle distance, causing the lighting divergence angle and coverage area to be unable to effectively adapt to the change of the road environment. In addition, the existing technology also lacks a systematic solution for dealing with the lighting clipping and auxiliary light control of vehicles near the opposite lane, and cannot avoid interference to the vehicles on the opposite lane, affecting the driving safety of both parties. In summary, the existing technology cannot meet the needs of multi-vehicle cooperation, efficient energy saving and safe night lighting, and an intelligent lighting control scheme based on vehicle cooperation and real-time data driving is urgently needed.

[0004] The present application provides an LED vehicle lamp operation monitoring system based on data analysis, which realizes fine control of the brightness and illumination shape of the vehicle LED lamp through real-time power supply performance evaluation and lighting width distribution based on a cooperative vehicle set. SUMMARY

[0005] The present application provides an LED vehicle lamp operation monitoring system based on data analysis to promote the solution to the problems mentioned in the background art.

[0006] The present application provides the following technical scheme: an LED vehicle lamp operation monitoring system based on data analysis, comprising:

[0007] A vehicle cooperation recognition module is configured to recognize the spatial position of the vehicles in the forward lane, screen a cooperative vehicle set, and establish a cooperative communication connection in the night road congestion state.

[0008] The lamp control response test module is configured to send a brightness disturbance instruction to the cooperative vehicle set, collect the brightness of the LED vehicle lamp in real time using a light intensity sensor, and calculate a brightness deviation based on an ideal brightness obtained through experiments.

[0009] The power supply performance evaluation module is configured to collect the direct current voltage of the LED vehicle lamp when the vehicle executes the brightness disturbance instruction in real time, and calculate a power supply performance index in combination with the brightness deviation.

[0010] The cooperative lighting decision module is configured to allocate a lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the brightness of the LED vehicle lamp based on the lighting width.

[0011] The cooperative lighting execution module is configured to send a cooperative control instruction to the vehicles in the cooperative vehicle set based on a cooperative communication network, so as to realize cooperative lighting in a road congestion state.

[0012] Optionally, the vehicle cooperative identification module is configured to identify the spatial positions of the vehicles in the forward lane, screen the cooperative vehicle set, and establish a cooperative communication connection in a road congestion state, and the method comprises the following steps:

[0013] The road comprises two groups of driving lanes in opposite directions, which are respectively named as a forward lane and a reverse lane, wherein each group of driving lanes comprises a plurality of parallel lanes.

[0014] For each parallel lane in the forward lane:

[0015] The position of the head boundary of each vehicle on the parallel lane is identified in real time using a high-precision map, and a straight line perpendicular to the driving direction of the forward lane is drawn through the position.

[0016] A cooperative distance threshold is set.

[0017] Any two parallel lanes are obtained, the distance between any two straight lines on the parallel lanes is calculated, and the distance is compared with the cooperative distance threshold.

[0018] If the distance is less than or equal to the cooperative distance threshold, it is determined that the vehicles corresponding to the two straight lines are side-by-side driving.

[0019] All the vehicles that are side-by-side driving are combined to form the cooperative vehicle set.

[0020] Optionally, the lamp control response test module is configured to send a brightness disturbance instruction to the cooperative vehicle set, collect the brightness of the LED vehicle lamp in real time using a light intensity sensor, and calculate a brightness deviation based on an ideal brightness obtained through experiments, and the method comprises the following steps:

[0021] A disturbance amplitude is set, and the disturbance amplitude is a proportion of increasing the brightness of the LED vehicle lamp.

[0022] The action duration of the brightness disturbance instruction is set as the disturbance interval;

[0023] The brightness disturbance instruction is to increase the brightness of the LED vehicle light of each vehicle in the disturbance interval by a disturbance amplitude;

[0024] The brightness of the LED vehicle light is collected every unit time interval in the disturbance interval using the light intensity sensor, and is recorded as the actual brightness of each unit time interval, wherein the unit time interval is less than the disturbance interval;

[0025] For any one vehicle in the cooperative vehicle set, the ideal brightness in the disturbance interval is measured experimentally when the vehicle is manufactured;

[0026] The brightness disturbance instruction is sent to the vehicle, and the brightness of the LED vehicle light is collected every unit time interval in the disturbance interval, and is recorded as the ideal brightness of each unit time interval;

[0027] For each unit time interval, the difference between the ideal brightness and the actual brightness is calculated;

[0028] The difference values of all unit time intervals are obtained, and the average value is calculated, and the result is recorded as the brightness deviation.

[0029] Optionally, the power supply performance evaluation module is configured to collect the direct current voltage of the LED vehicle light when the vehicle executes the brightness disturbance instruction in real time, and calculate the power supply performance index in combination with the brightness deviation, including:

[0030] The direct current voltage of the LED vehicle light is collected every unit time interval in the disturbance interval, and the maximum direct current voltage and the minimum direct current voltage are obtained;

[0031] The maximum direct current voltage minus the minimum direct current voltage is calculated, and the result is recorded as the voltage fluctuation amplitude;

[0032] The weights of the brightness deviation and the voltage fluctuation amplitude are set;

[0033] The weighted average of the brightness deviation and the voltage fluctuation amplitude and their respective weights is calculated, and the result is recorded as the power supply performance index of the vehicle.

[0034] Optionally, the cooperative lighting decision module is configured to allocate the lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the brightness of the LED vehicle light based on the lighting width, including:

[0035] The power supply performance index of each vehicle in the cooperative vehicle set is obtained, the inverse of the power supply performance index is calculated, and the sum of all inverses is calculated, and the result is recorded as the power supply index sum;

[0036] The inverse of the power supply performance index of each vehicle is divided by the power supply index sum, and the result is used as the power supply task proportion;

[0037] Obtaining the width of the forward lane, calculating the product of the width and the power supply task ratio as the lighting width of each vehicle;

[0038] Setting the low beam of each vehicle in the cooperative vehicle set to project a lighting area in the forward lane as an isosceles trapezoid;

[0039] Wherein, the two parallel sides of the isosceles trapezoid are named as the first side and the second side according to the distance from the head boundary, and the lighting width is the first side.

[0040] Optionally, the cooperative lighting decision module is configured to distribute the lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the brightness of the LED vehicle lamp based on the lighting width, and further comprises:

[0041] For any vehicle in the cooperative vehicle set, the brightness of the LED vehicle lamp is calculated based on the lighting width:

[0042] Setting a brightness interval;

[0043] Obtaining the maximum brightness and the minimum brightness of the LED vehicle lamp;

[0044] Dividing the maximum brightness and the minimum brightness into a plurality of test brightnesses in units of the brightness interval, and controlling the LED vehicle lamp to emit the low beam with the test brightness;

[0045] Measuring the length of the first side of the isosceles trapezoid corresponding to each test brightness, and establishing a corresponding relationship between the first side length and the test brightness;

[0046] Obtaining the lighting width of the vehicle;

[0047] Obtaining the test brightness when the first side length is equal to the lighting width in the corresponding relationship, and controlling the brightness of the LED vehicle lamp of the vehicle to be the test brightness;

[0048] Controlling the first side of the isosceles trapezoid corresponding to each vehicle in the cooperative vehicle set to be located on the same straight line.

[0049] Optionally, the control of the first side of the isosceles trapezoid corresponding to each vehicle in the cooperative vehicle set to be located on the same straight line comprises:

[0050] Using a high-precision map to identify each vehicle waiting in front of the cooperative vehicle set and the vehicle distance between the cooperative vehicle set, calculating the mean value as the average vehicle distance L;

[0051] For any vehicle in the cooperative vehicle set:

[0052] Obtaining the lighting width d of the vehicle, calculating the lighting divergence angle θ of the vehicle,

[0053] The illumination divergence angle is used for controlling the divergence degree of the illumination area in the shape of isosceles trapezoid, wherein the illumination divergence angle is:

[0054] The midpoints of the second sides of the isosceles trapezoids are connected with the two end points of the first sides to obtain two line segments, and the included angle of the two line segments is the illumination divergence angle;

[0055] The low beam is adjusted to realize that the beam angle of the LED vehicle lamp is equal to the illumination divergence angle.

[0056] The low beam is adjusted to realize the collinear arrangement of the cooperative vehicle set.

[0057] Optionally, the cooperative illumination decision module is used for distributing the illumination width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculating the brightness of the LED vehicle lamp based on the illumination width, and further comprises:

[0058] A vehicle closest to the reverse lane in the cooperative vehicle set is obtained, and is recorded as a marker vehicle;

[0059] A line segment of the first side of the isosceles trapezoid corresponding to the marker vehicle is obtained;

[0060] The length of the first side minus the length of the line segment is calculated, and the result is recorded as a cutting length;

[0061] The length of the first side minus 2 times the cutting length is calculated, and the result is recorded as a marker length;

[0062] The test brightness of the first side length equal to the marker length is obtained in the corresponding relationship, and is used as the brightness of the LED vehicle lamp of the marker vehicle;

[0063] A turning auxiliary lamp corresponding to the marker vehicle away from the reverse lane is obtained, and the turning auxiliary lamp is turned on, wherein the turning auxiliary lamp is used for illuminating the forward lane.

[0064] The present application has the following advantages:

[0065] 1. The LED vehicle lamp operation monitoring system based on data analysis identifies the spatial positions of each vehicle in the forward lane based on high-precision map technology under road congestion, constructs a perpendicular line at the vehicle head boundary, combines a set cooperative distance threshold, and realizes intelligent screening of side-by-side driving vehicles. It is used for efficiently constructing a "cooperative vehicle set" with physical adjacency and consistent response, laying a spatial foundation for subsequent cooperative control, information interaction and collective illumination scheduling.

[0066] 2、The LED car light operation monitoring system based on data analysis, by setting the disturbance amplitude and disturbance interval, accurately controls the disturbance application process, and compares the ideal brightness sequence in the vehicle factory experiment data, obtains the deviation of the actual brightness and the ideal brightness. Effectively capture the response ability of the car light in the dynamic change process, can find the brightness lag, power shortage or other distortion problems. Help to realize the performance classification of subsequent lighting scheduling, and provide scientific basis for improving the overall lighting consistency and energy saving effect.

[0067] 3、The LED car light operation monitoring system based on data analysis, by analyzing the maximum and minimum voltage difference in the disturbance interval, obtaining the voltage fluctuation amplitude, and weighting and fusing with the brightness deviation, so as to reflect the overall stability and consistency of the vehicle electrical system to the lighting response. The brightness deviation may be caused by LED car light aging and other problems, so additional measurement of direct current voltage is needed. When the power supply capacity of the vehicle is insufficient, the higher the power supply performance index is, the smaller the lighting task needs to be allocated in the cooperative lighting, the higher the power supply capacity is, the lower the power supply performance index is, and the more lighting tasks should be borne. The obtained power supply performance index is used as the scheduling basis in subsequent cooperative control, avoiding that the vehicle with low lighting quality bears too much lighting task, thereby optimizing the lighting configuration of the whole vehicle team, improving the energy efficiency and night driving safety.

[0068] 4、The LED car light operation monitoring system based on data analysis, the lighting area of the low beam is approximated as an isosceles trapezoid, which simplifies the subsequent distribution of lighting tasks, and is convenient for calculation. Among them, the first side of the isosceles trapezoid is used as the boundary of lighting, which can provide lighting between the cooperative vehicle set and the front waiting line while avoiding visual irritation of the car light to the front waiting line. At the same time, in the state of road congestion, the vehicle is almost stopped, the lighting brightness of the vehicle is reduced, the energy consumption is reduced, and the safety of night driving is ensured.

[0069] 5、The LED car light operation monitoring system based on data analysis, after calculating the lighting width according to the power supply performance index, it is necessary to correspond the lighting width to the specific lighting brightness, so the lighting brightness corresponding to different lighting widths is tested for each vehicle, and then the lighting brightness corresponding to the lighting width corresponding to the first side length is obtained, which ensures the uniformity of overall lighting coverage and the continuity of light band, thereby enhancing the lighting continuity and road visibility, and effectively improving the multi-vehicle cooperative lighting effect and driving safety guarantee.

[0070] 6、The LED car light operation monitoring system based on data analysis, even if the lighting area of each vehicle is limited to an isosceles trapezoid with a corresponding first side, due to different installation conditions of the vehicle height or the LED car light, the low beam angle adjustment of different vehicles is different, and the first side must be controlled on the same straight line to form a unified lighting front line reference line, uniformly cover the entire lane, eliminate blind spots and overlap, adjust the low beam, realize the equalization of the beam angle and the lighting divergence angle of the LED car light; adjust the low beam to realize the collinear arrangement of the isosceles trapezoidal first side of the cooperative vehicle, realize the accurate restoration of the lighting shape, cooperative control efficient splicing, system modeling rigorous matching, and improve the efficiency and effect of cooperative lighting.

[0071] 7、The LED car light operation monitoring system based on data analysis, even if the lighting width of the marked vehicle has been allocated according to the lane width and power supply performance, in actual generation of the isosceles trapezoidal lighting area, due to factors such as vehicle position, splicing overlap, lane boundary limitation, etc., the first side may be intercepted by the forward lane, that is, the LED car light of the marked vehicle exceeds the illumination range of the forward lane and illuminates on the reverse lane, so the overlapping part between the first side of the lighting area and the intersection line of the forward lane is trimmed and corrected, thereby avoiding the invasion of the lighting area into the reverse lane, improving safety, calculating the trimming length, and inversely deducing the matched lighting brightness, so that the illumination range of the edge vehicle meets the lane boundary requirement. At the same time, the directional turn assist light is turned on to supplement the light in the area of the lane and enhance the visual coverage range. The problem of mispositioning, deviation and shielding of the boundary area lighting is solved, and the edge safety and overall lighting uniformity of the road are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0072] Figure 1 The system module diagram of the present application.

[0073] Figure 2 The isosceles trapezoidal diagram of the present application. DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0075] Embodiment one, refer to Figure 1 A LED car light operation monitoring system based on data analysis, comprising:

[0076] A vehicle cooperative identification module for identifying the spatial position of vehicles in the forward lane in the night road congestion state, screening cooperative vehicle set, and establishing cooperative communication connection, comprising:

[0077] The road includes two groups of driving lanes in opposite directions, respectively named forward lane and reverse lane, wherein each driving lane group contains 3 parallel lanes;

[0078] For each parallel lane in the forward lane, L1, L2, L3:

[0079] The position of the head boundary of each vehicle on the parallel lane is identified in real time using high-precision map, and a straight line perpendicular to the driving direction of the forward lane is made through the position;

[0080] In the congestion state, there is one vehicle on each lane, respectively A(L1), B(L2), C(L3);

[0081] Set the cooperative distance threshold, in this embodiment, the cooperative distance threshold is equal to 4m;

[0082] Arbitrarily obtain two parallel lanes, calculate the distance between any two straight lines on the parallel lane, and compare the distance with the cooperative distance threshold;

[0083] Among them, the straight line distance between car A and car B is 2m<4m, the straight line distance between car A and car C is 3.8m<4m, and the straight line distance between car C and car B is 1.8m<4m, then it is determined that car A, car B and car C constitute a cooperative vehicle set in the forward lane.

[0084] A light control response test module for sending brightness disturbance instructions to the cooperative vehicle set, using a light intensity sensor to collect the brightness of the LED vehicle light in real time, and calculating the brightness deviation based on the ideal brightness obtained by experiment, comprising:

[0085] The adjustment of the LED vehicle light of each cooperative vehicle is strictly limited within the adjustment range allowed by the vehicle light system, ensuring that the lighting adjustment does not affect the road safety and the stability of the vehicle light hardware.

[0086] Set the disturbance amplitude = 5%, which is the proportion of increasing the brightness of the LED vehicle light;

[0087] Set the action time of the brightness disturbance instruction as disturbance interval = 2 seconds;

[0088] Set the unit time as 0.5 seconds, then collect the brightness data every 0.5 seconds, a total of 4 times;

[0089] For car A, the ideal brightness acquisition stage (vehicle factory experiment):

[0090] The ideal response brightness obtained by vehicle A in the factory test is as follows:

[0091] Initial brightness is 1000 lux, "lux" is the unit of the International System of Units for measuring illuminance, indicating the received luminous flux per unit area

[0092] After applying a 5% disturbance, the expected brightness is linearly raised from 1000 lux to 1050 lux within 2 seconds;

[0093] Ideal brightness distribution:

[0094] 1st unit duration (0.5s): 1012.5lux;

[0095] 2nd unit duration (1.0s): 1025lux;

[0096] 3rd unit duration (1.5s): 1037.5lux;

[0097] 4th unit duration (2.0s): 1050lux;

[0098] During the test, the system sends a 5% brightness disturbance instruction to vehicle A, and the brightness collected by the light intensity sensor is as follows:

[0099] 1st unit duration: 1005lux;

[0100] 2nd unit duration: 1018lux;

[0101] 3rd unit duration: 1030lux;

[0102] 4th unit duration: 1040lux;

[0103] Brightness deviation calculation:

[0104] Calculate the brightness difference (ideal brightness-actual brightness) under each unit duration respectively:

[0105] Difference 1 = 1012.5-1005 = 7.5lux;

[0106] Difference 2 = 1025-1018 = 7lux;

[0107] Difference 3 = 1037.5-1030 = 7.5lux;

[0108] Difference 4 = 1050-1040 = 10lux;

[0109] Calculate the brightness deviation (average) = (7.5+7+7.5+10) / 4 = 32 / 4 = 8lux;

[0110] The power supply performance evaluation module is configured to collect the DC voltage of the LED vehicle lamp when the vehicle executes the brightness disturbance instruction in real time, and calculate a power supply performance index in combination with the brightness deviation, including:

[0111] The DC voltage of the LED vehicle lamp is collected every unit time interval within the disturbance interval to obtain the maximum DC voltage and the minimum DC voltage;

[0112] The maximum DC voltage and the minimum DC voltage are calculated, and the result is recorded as the voltage fluctuation amplitude;

[0113] The DC voltage of the LED vehicle lamp of vehicle A is collected every 0.5 seconds within the disturbance interval (2 seconds), and the records are as follows:

[0114] The first time (0.5s): 13.2V;

[0115] The second time (1.0s): 13.8V;

[0116] The third time (1.5s): 13.5V;

[0117] The fourth time (2.0s): 13.0V;

[0118] The maximum voltage = 13.8V

[0119] The minimum voltage = 13.0V

[0120] The voltage fluctuation amplitude = 13.8V-13.0V = 0.8V;

[0121] The weights are set as follows (example weights can be adjusted according to actual scenarios):

[0122] The brightness deviation weight: 0.6, the voltage fluctuation amplitude weight: 0.4;

[0123] The power supply performance index = (8x0.6) + (0.8x0.4) = 4.8 + 0.32 = 5.12.

[0124] The cooperative lighting decision module is configured to allocate the lighting width of each vehicle according to the width of the positive lane and the power supply performance index of the cooperative vehicle set, and calculate the brightness of the LED vehicle lamp based on the lighting width, including:

[0125] The power supply performance index of each vehicle in the cooperative vehicle set is obtained, and the power supply performance indexes of vehicles A, B and C are as follows:

[0126] Vehicle A: 5.12 (moderately stable power supply), the reciprocal is equal to

[0127] Vehicle B: 4.00 (power supply is stable), the reciprocal is equal to

[0128] Vehicle C: 8.00 (with large fluctuations), the reciprocal equals

[0129] The sum of all reciprocals is calculated, and the result is recorded as the power supply index sum = 0.1953 + 0.25 + 0.125 = 0.5703;

[0130] The reciprocal of the power supply performance index of each vehicle is divided by the power supply index sum, and the result is taken as the power supply task ratio;

[0131] Among them, the power supply task ratio of vehicle A = 0.1953 / 0.5703 ≈ 0.3424;

[0132] The power supply task ratio of vehicle B = 0.25 / 0.5703 ≈ 0.4382;

[0133] The power supply task ratio of vehicle C = 0.125 / 0.5703 ≈ 0.2192;

[0134] The width of the forward lane is obtained = 6m, and the product of the width and the power supply task ratio is calculated as the lighting width of each vehicle;

[0135] The lighting width of vehicle A = 6×0.3424 ≈ 2.05 meters;

[0136] The lighting width of vehicle B = 6×0.4382 ≈ 2.63 meters;

[0137] The lighting width of vehicle C = 6×0.2192 ≈ 1.31 meters;

[0138] The lighting deviation of vehicle C is the smallest, but its power supply performance index is the largest (i.e. the system power supply fluctuation is large), so it is allocated less lighting width (1.31 meters).

[0139] Vehicle B supplies power most stably and gets the maximum lighting width (2.63 meters).

[0140] The system automatically optimally allocates according to the "power supply reciprocal weighting", ensuring that stable vehicles undertake more lighting tasks.

[0141] Set the low beam of each vehicle in the cooperative vehicle set, and the lighting area projected by the low beam in the forward lane is an isosceles trapezoid;

[0142] Among them, the two parallel sides of the isosceles trapezoid are named as the first side and the second side according to the distance from the head boundary, and the lighting width is the first side.

[0143] For any vehicle in the cooperative vehicle set, the brightness of the LED car light is calculated based on the lighting width:

[0144] Set the brightness interval = 10 cd (candela);

[0145] The maximum brightness of the LED vehicle lamp is 100 cd and the minimum brightness is 20 cd;

[0146] A plurality of test brightnesses are divided between the maximum brightness and the minimum brightness in units of brightness intervals, and the LED vehicle lamp is controlled to emit low beam light with the brightness being the test brightness;

[0147] The length of the first side of the isosceles trapezoid corresponding to each test brightness is measured, and a corresponding relationship between the first side length and the test brightness is established;

[0148] The illumination width of the vehicle is obtained;

[0149] The test brightness when the first side length is equal to the illumination width is obtained in the corresponding relationship, and the brightness of the LED vehicle lamp of the vehicle is controlled to be the test brightness;

[0150] The low beam brightness of the LED vehicle lamp of vehicle A is controlled to be 46.25 cd;

[0151] The low beam brightness of the LED vehicle lamp of vehicle B is controlled to be 64.33 cd;

[0152] The low beam brightness of the LED vehicle lamp of vehicle C is controlled to be 27.75 cd;

[0153] The first side of the isosceles trapezoid corresponding to each vehicle in the cooperative vehicle set is controlled to be located on the same straight line.

[0154] The distance between each vehicle and the cooperative vehicle set is identified using a high-precision map in front of the cooperative vehicle set, and the average value is calculated and recorded as the average distance L;

[0155] The distance between vehicle A and the front vehicle is 4.5 meters;

[0156] The distance between vehicle B and the front vehicle is 5.2 meters;

[0157] The distance between vehicle C and the front vehicle is 4.8 meters;

[0158] The average value is calculated as (4.5+5.2+4.8) / 3=14.5 / 3=4.83 meters;

[0159] For any vehicle in the cooperative vehicle set:

[0160] The illumination width d of the vehicle is obtained as 2.05 meters;

[0161] In this embodiment, referring to Figure 2 , the isosceles trapezoid of vehicle A and the corresponding illumination divergence angle relationship.

[0162] The same applies to vehicle B and vehicle C.

[0163] The light beam angle of the LED vehicle lamp is usually the angle range of the light beam of the vehicle lamp diverging outward from the light emitting point, that is, the spatial angle covered by the light beam, and the light beam angle corresponds to the illumination divergence angle, and the light beam angle is adjusted to realize reasonable coverage of the vehicle illumination area and effective connection of the illumination boundary between vehicles.

[0164] The light beam angle of the LED vehicle lamp is usually the angle range of the light beam of the vehicle lamp diverging outward from the light emitting point, that is, the spatial angle covered by the light beam, and the light beam angle corresponds to the illumination divergence angle, and the light beam angle is adjusted to realize reasonable coverage of the vehicle illumination area and effective connection of the illumination boundary between vehicles.

[0165] The light beam angle of the LED vehicle lamp is usually the angle range of the light beam of the vehicle lamp diverging outward from the light emitting point, that is, the spatial angle covered by the light beam, and the light beam angle corresponds to the illumination divergence angle, and the light beam angle is adjusted to realize reasonable coverage of the vehicle illumination area and effective connection of the illumination boundary between vehicles.

[0166] Only the light beam angle and the collinear arrangement of the first side can achieve the best cooperative lighting effect.

[0167] In the adjustment of the low beam of the present scheme, if the adjustment range of the vehicle is limited, the closest adjustment result can be selected as the final adjustment target.

[0168] For vehicles without rotation function, other existing supporting means need to be used to assist in achieving the collinear lighting requirement, or since most of the existing vehicles have adjustment conditions, a small number of vehicles without adjustment conditions can be ignored.

[0169] The adjustment of vehicle B and vehicle C is the same.

[0170] In the cooperative vehicle set, the vehicle closest to the opposite lane is obtained, which is recorded as a marker vehicle;

[0171] Among them, vehicle C is the marker vehicle;

[0172] The length of the first side of the isosceles trapezoid of vehicle C (illumination width) = 1.31 meters;

[0173] Assuming that through high-precision map measurement, the length of the first side line segment corresponding to the marker vehicle is 1 meter;

[0174] The length of the first side is calculated as the length of the line segment, and the result is recorded as the cutting length = 1.31-1 = 0.31 meters;

[0175] The length of the first side is calculated as 2 x the cutting length, and the result is recorded as the marker length == 1.31 - 2 x 0.31 = 0.69;

[0176] In the correspondence, the test brightness of the first side length equal to the marker length is obtained as the brightness of the marker vehicle LED car light = 15 cd;

[0177] The marker vehicle is obtained away from the corresponding turning auxiliary light of the reverse lane, and the turning auxiliary light is turned on, wherein the turning auxiliary light is used for illuminating the forward lane, and the turning auxiliary light is not used for guiding the vehicle to turn.

[0178] Adjusting the low beam brightness of the marker vehicle instead of the rotation angle is an optimal strategy based on the following limited conditions:

[0179] Avoiding irradiation out of the boundary or interfering with the reverse lane, adapting to the adjustment limit of the hardware structure, and ensuring the overall consistency and safety of cooperative lighting.

[0180] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0181] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A data analysis based LED vehicle lamp operation monitoring system characterized by, The method comprises the following steps: A vehicle cooperative identification module is used to identify the spatial position of vehicles in the forward lane in the night road congestion state, screen a cooperative vehicle set, and establish a cooperative communication connection; A light control response test module is used to send a brightness disturbance instruction to the cooperative vehicle set, use a light intensity sensor to collect the brightness of the LED vehicle light in real time, and calculate the brightness deviation based on the ideal brightness obtained through experiments: Set the disturbance amplitude, which is the proportion of the increase in the brightness of the LED vehicle light; Set the action time of the brightness disturbance instruction as the disturbance interval; The brightness disturbance instruction is to increase the brightness of the LED vehicle light of each vehicle in the cooperative vehicle set by the disturbance amplitude within the disturbance interval; Use the light intensity sensor to collect the brightness of the LED vehicle light every unit time within the disturbance interval, and record the actual brightness of each unit time, wherein the unit time is less than the disturbance interval; For any vehicle in the cooperative vehicle set, the ideal brightness within the disturbance interval is measured through experiments when the vehicle is manufactured: Send the brightness disturbance instruction to the vehicle, and collect the brightness of the LED vehicle light every unit time within the disturbance interval, and record the ideal brightness of each unit time; For each unit time, calculate the difference between the ideal brightness and the actual brightness; Obtain the difference values of all unit times, calculate the mean value, and record the result as the brightness deviation; A power supply performance evaluation module is used to collect the direct current voltage of the LED vehicle light when the vehicle executes the brightness disturbance instruction in real time, and calculate the power supply performance index in combination with the brightness deviation; A cooperative lighting decision module is used to allocate the lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the brightness of the LED vehicle light based on the lighting width; A cooperative lighting execution module is used to send a cooperative control instruction to the vehicles in the cooperative vehicle set based on the cooperative communication network, and realize cooperative lighting in the road congestion state.

2. The data analysis based LED vehicle lamp operation monitoring system as claimed in claim 1 wherein, The vehicle cooperative identification module is used to identify the spatial position of vehicles in the forward lane in the road congestion state, screen a cooperative vehicle set, and establish a cooperative communication connection, comprising: The road comprises two groups of driving lanes with opposite directions, namely the forward lane and the reverse lane, wherein each group of driving lanes comprises multiple parallel lanes; For each parallel lane in the forward lane: Use a high-precision map to identify the position of the front boundary of each vehicle on the parallel lane in real time, and draw a straight line perpendicular to the driving direction of the forward lane through the position; Set a cooperative distance threshold; Arbitrarily obtain two parallel lanes, calculate the distance between any two straight lines on the parallel lanes, and compare the distance with the cooperative distance threshold; If the distance is less than or equal to the cooperative distance threshold, it is determined that the vehicles corresponding to the two straight lines are driving side by side; All vehicles driving side by side form a cooperative vehicle set.

3. The data analytics based LED vehicle lamp operation monitoring system as claimed in claim 1 wherein, The power supply performance evaluation module is used to collect the direct current voltage of the LED vehicle light when the vehicle executes the brightness disturbance instruction in real time, and calculate the power supply performance index in combination with the brightness deviation, comprising: Collect the direct current voltage of the LED vehicle light every unit time within the disturbance interval, and obtain the maximum direct current voltage and the minimum direct current voltage; Calculate the maximum direct current voltage - the minimum direct current voltage, and record the result as the voltage fluctuation amplitude; Set the weight of the luminance deviation and the voltage fluctuation amplitude; Calculate the weighted average of the luminance deviation and the voltage fluctuation amplitude and the respective weights, and record the result as the power supply performance index of the vehicle.

4. The data analytics based LED vehicle lamp operation monitoring system as claimed in claim 1 wherein, The cooperative lighting decision module is configured to allocate a lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the luminance of the LED vehicle lamp based on the lighting width, and the cooperative lighting decision module comprises the following steps: Obtain the power supply performance index of each vehicle in the cooperative vehicle set, calculate the reciprocal of the power supply performance index respectively, calculate the sum of all reciprocals, and record the result as the power supply index sum; Calculate the reciprocal of the power supply performance index of each vehicle divided by the power supply index sum, and record the result as the power supply task proportion; Obtain the width of the forward lane, and calculate the product of the width and the power supply task proportion as the lighting width of each vehicle; Set the low beam of each vehicle in the cooperative vehicle set, and the lighting area projected by the low beam in the forward lane is an isosceles trapezoid; Wherein, the two parallel sides of the isosceles trapezoid are named as the first side and the second side according to the distance from the vehicle head boundary, and the lighting width is the first side.

5. The data analytics based LED vehicle lamp operation monitoring system as claimed in claim 4, wherein, The cooperative lighting decision module is configured to allocate a lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the luminance of the LED vehicle lamp based on the lighting width, and the cooperative lighting decision module comprises the following steps: For any vehicle in the cooperative vehicle set, the luminance of the LED vehicle lamp is calculated based on the lighting width: Set the luminance interval; Obtain the maximum luminance and the minimum luminance of the LED vehicle lamp; Divide the maximum luminance and the minimum luminance into a plurality of test luminances in units of luminance interval, and control the low beam of the LED vehicle lamp to irradiate according to the test luminance; Measure the length of the first side of the isosceles trapezoid corresponding to each test luminance, and establish a corresponding relationship between the first side length and the test luminance; Obtain the lighting width of the vehicle; In the corresponding relationship, obtain the test luminance when the first side length is equal to the lighting width, and control the luminance of the LED vehicle lamp of the vehicle to be the test luminance; Control the first side of the isosceles trapezoid corresponding to each vehicle in the cooperative vehicle set to be located on the same straight line.

6. The data analytics based LED vehicle lamp operation monitoring system as claimed in claim 5, wherein, The control of the first side of the isosceles trapezoid corresponding to each vehicle in the cooperative vehicle set to be located on the same straight line comprises: Use the high-precision map to identify each vehicle waiting in front of the cooperative vehicle set and the vehicle distance between the cooperative vehicle set, calculate the average, and record it as the average vehicle distance L; For any vehicle in the cooperative vehicle set: acquiring a lighting width d of the vehicle, calculating a lighting divergence angle of the vehicle , ; The lighting divergence angle is used to control the divergence degree of the lighting area with the shape of the isosceles trapezoid, and the lighting divergence angle is: Connect the midpoint of the second side of the isosceles trapezoid and the two endpoints of the first side to obtain two line segments, and the included angle between the two line segments is the lighting divergence angle; Adjust the low beam to realize that the beam angle of the LED vehicle lamp is equal to the lighting divergence angle; Adjust the low beam to realize the collinear arrangement of the first side of the isosceles trapezoid in the cooperative vehicle set.

7. The data analytics based LED vehicle lamp operation monitoring system as claimed in claim 6, wherein, The cooperative lighting decision module is configured to allocate a lighting width of each vehicle according to the width of the forward lane and the power supply performance index of the cooperative vehicle set, and calculate the luminance of the LED vehicle lamp based on the lighting width, and the cooperative lighting decision module comprises the following steps: In the cooperative vehicle set, obtain the vehicle closest to the reverse lane, and record it as the marker vehicle; Obtain the line segment of the first side of the isosceles trapezoid corresponding to the marker vehicle in the forward lane; Calculate the length of the first side - the length of the line segment, and the result is recorded as the cutting length; Compute the length of the first side - 2 Crop the length, the result is recorded as the marker length; In the correspondence, the test brightness with the first side length equal to the marker length is obtained as the brightness of the LED vehicle lamp of the marker vehicle; Obtain the corresponding steering auxiliary lamp of the marker vehicle away from the reverse lane, and turn on the steering auxiliary lamp, wherein the steering auxiliary lamp is used for illuminating the forward lane.

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