A method and system for measuring road surface illuminance of an automobile headlamp

Abstract

The present disclosure provides a kind of automobile headlamp road illumination measurement method and system, it is related to automobile lighting technical field, including obtaining automobile headlamp illumination value measuring point, determine the placement position of photosensitive device;Vehicle is in the specified parking position and opens headlamp, the photosensitive probe of the photosensitive device is directly opposite the direction of headlamp, when the headlamp irradiates the photosensitive probe of the photosensitive device, after the light information of photosensitive probe is collected, receiving signal is sent to the controller of photosensitive device, and the controller controls the indicator light to light up.If there is individual point position to measure specific illumination value, can be directly measured on corresponding point position using luxmeter.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of automotive lighting, in particular to a method and system for measuring road illumination of an automotive headlamp. BACKGROUND

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute the prior art.

[0003] Automobile driving at night cannot do without automobile lamp lighting, and automobile lamps are an important part of safe driving at night. Good automobile lamp lighting can provide better visibility for drivers at night and better road condition perception, greatly improving the safety of night driving. The lamps that provide road lighting for drivers are mainly front headlights and front fog lamps, collectively referred to as headlamps. Among them, the front headlights include low beam and high beam. The low beam is mainly for short-distance road lighting and does not cause glare to the drivers of oncoming vehicles. The high beam is mainly for long-distance lighting. The front fog lamp is mainly used to improve road lighting in fog, snow, rain or dust. The light sources currently used in headlamps are mainly halogen bulbs, xenon lamps (HID) and LEDs. LEDs have become the mainstream light source of current headlamps due to their fast start-up speed, long service life, bright light color and easy access to high luminous flux, etc. More and more automobile manufacturers use LED light sources for headlamps.

[0004] To obtain good road lighting effect of the headlamp, in addition to the light source, a reasonable road lighting evaluation standard is also needed, and the road lighting effect of the headlamp is confirmed and accepted according to the standard. Many automobile manufacturers have their own headlamp road lighting evaluation standards, and the width and distance of headlamp lighting are two indexes that cannot be bypassed in the evaluation standards of automobile manufacturers. Only headlamps with excellent lighting width and distance can provide good road lighting for drivers. The road illuminance of the light is actually composed of a large number of equal illuminance curves, and the illuminance value on each equal illuminance curve is the same. The existing method often selects several equal illuminance curves of interest (such as 3lx, 5lx, 20lx, etc.), and then measures the width and distance covered by each curve, and confirms whether it meets the standard. The main measurement method of the width and distance of the illuminance curve is: according to the road lighting evaluation standard, mark the position points of each width and distance required in the standard on the ground, and then measure whether the illuminance value at each point covers the point. If it covers the point, it means that it meets the standard, otherwise it does not meet the standard.

[0005] However, the above measurement method needs to measure all the points before confirming which points meet the standard and which points do not meet the standard, and it cannot be quickly confirmed intuitively, and some measurement points are as many as dozens, which is a large amount of work and low efficiency. SUMMARY

[0006] The present disclosure proposes a vehicle headlamp road surface illuminance measurement method and system to solve the above problems. The light sensing device is arranged at each point specified in the headlamp illuminance evaluation standard to quickly and intuitively determine whether each point is qualified.

[0007] According to some embodiments, the present disclosure adopts the following technical solutions:

[0008] A vehicle headlamp road surface illuminance measurement method comprises the following steps:

[0009] Obtaining a vehicle headlamp illuminance value measurement point and determining a light sensing device placement position;

[0010] The vehicle opens the headlamp at a specified parking position, the light sensing probe of the light sensing device is directed towards the headlamp, and when the headlamp irradiates the light sensing probe of the light sensing device, the light sensing probe collects light information and sends a receiving signal to the controller of the light sensing device. The controller controls the indicator light to be lit.

[0011] According to some embodiments, the present disclosure adopts the following technical solutions:

[0012] A vehicle headlamp road surface illuminance measurement system comprises the following steps:

[0013] A data acquisition module is configured to obtain a vehicle headlamp illuminance value measurement point and determine a light sensing device placement position;

[0014] A measurement module is configured to open the headlamp at a specified parking position, the light sensing probe of the light sensing device is directed towards the headlamp, and when the headlamp irradiates the light sensing probe of the light sensing device, the light sensing probe collects light information and sends a receiving signal to the controller of the light sensing device. The controller controls the indicator light to be lit.

[0015] According to some embodiments, the present disclosure adopts the following technical solutions:

[0016] A non-transitory computer readable storage medium is configured to store computer instructions. When the computer instructions are executed by a processor, the vehicle headlamp road surface illuminance measurement method is implemented.

[0017] According to some embodiments, the present disclosure adopts the following technical solutions:

[0018] An electronic device comprises a processor, a memory, and a computer program. The processor is connected to the memory, and the computer program is stored in the memory. When the electronic device is running, the processor executes the computer program stored in the memory to make the electronic device execute the vehicle headlamp road surface illuminance measurement method.

[0019] Compared with the prior art, the beneficial effects of the present disclosure are:

[0020] The automobile headlamp road surface illuminance measurement method of the present disclosure can quickly and intuitively confirm whether each point is qualified under the premise of not changing the original headlamp care measurement method, and the workload is small; after the photosensitive device is placed, the automobile headlamp, such as the front headlamp, is turned on, and the light will irradiate the photosensitive device; if the illuminance value of the light irradiating the photosensitive device reaches or is higher than the limit value in the headlamp illuminance evaluation standard, the green indicator light is lit, representing that the illuminance value of the point is qualified, otherwise the red indicator light is lit, representing that the illuminance value of the point is unqualified; through the lighting of the indicator lights of different colors on the photosensitive device, the qualified and unqualified points can be quickly and intuitively identified as a whole, greatly saving the measurement time and improving the measurement efficiency.

[0021] The automobile headlamp road surface illuminance measurement method of the present disclosure can quickly and intuitively confirm whether each point is qualified under the premise of not changing the original headlamp care measurement method, and the workload is small; after the photosensitive device is placed, the automobile headlamp, such as the front headlamp, is turned on, and the light will irradiate the photosensitive device; if the illuminance value of the light irradiating the photosensitive device reaches or is higher than the limit value in the headlamp illuminance evaluation standard, the green indicator light is lit, representing that the illuminance value of the point is qualified, otherwise the red indicator light is lit, representing that the illuminance value of the point is unqualified; through the lighting of the indicator lights of different colors on the photosensitive device, the qualified and unqualified points can be quickly and intuitively identified as a whole, greatly saving the measurement time and improving the measurement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of the present disclosure, are used to provide further understanding of the present disclosure, and the schematic embodiments of the present disclosure and the description thereof are used to explain the present disclosure, and do not constitute improper limitations on the present disclosure.

[0023] Figure 1 The illuminance value measurement point distribution diagram of the present disclosure embodiment;

[0024] Figure 2 The photosensitive device schematic diagram of the present disclosure embodiment;

[0025] 1, photosensitive device; 2, indicator light; 3, red indicator light; 4, photosensitive probe. DETAILED DESCRIPTION

[0026] The present disclosure will be further described below in combination with the drawings and embodiments.

[0027] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the present disclosure belongs.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Example 1

[0030] One embodiment of this disclosure provides a method for measuring road illuminance of automotive headlights, which can quickly and intuitively identify qualified and unqualified locations. Then, as needed, specific locations can be measured individually, thereby reducing the workload and improving measurement efficiency. The method includes:

[0031] Obtain the measurement points for the illuminance value of the car headlights to determine the placement location of the photosensitive equipment;

[0032] When the vehicle is parked in the designated location and the headlights are turned on, the photosensitive probe of the photosensitive device is facing the headlights. When the headlights illuminate the photosensitive probe, the probe collects the illumination information and sends it to the controller of the photosensitive device. The controller then controls the indicator light to illuminate.

[0033] A photosensitive device is a sensing device that can receive light from a light source and convert light signals into electrical signals.

[0034] As one embodiment, this disclosure discloses a method for measuring road illuminance of automotive headlights. A photosensitive device is placed at the measurement point required by the headlight illuminance evaluation standard. This device has red and green indicator lights. The indicator lights are positioned on the top of the photosensitive device for easy visibility.

[0035] If the illuminance value of the light illuminating the photosensitive device reaches or exceeds the limit value in the headlight illuminance evaluation standard, the indicator light on the photosensitive device will automatically light up after the headlight shines on the photosensitive device. If the green indicator light is on, it means that the illuminance value at that point meets the requirements. If the photosensitive probe does not receive a light signal after a specified period of time, the red indicator light will light up, indicating that it does not meet the requirements.

[0036] As one embodiment, the photosensitive probe is set in a position that conforms to the illuminance standard, and photosensitive devices are placed at all headlight illuminance measurement points.

[0037] like Figure 1As shown, the measurement points for the headlight illuminance value are points, and the headlight illuminance measurement area is enclosed by these points. Each point is converted into a coordinate system position, with the horizontal axis value representing the distance between the measurement point and the front of the vehicle, and the vertical axis value representing the distance between the measurement point and the center line of the lane.

[0038] As an example, if the evaluation criteria require that the illuminance value in area A (the area enclosed by points a and e) must be at least 20 lx, since the illuminance value of the headlights decreases as you move further away from the vehicle along the driving direction, and decreases further to the sides of the vehicle, then as long as the illuminance values ​​at points a to e reach 20 lx, the requirement of at least 20 lx illuminance value in area A can be met.

[0039] The traditional measurement method involves placing an illuminance meter (a device for measuring the illuminance of light) on... Figure 1 At each point shown, the illuminance value is measured sequentially from point a to point e. Each measured value is then compared to 20 lx to confirm whether the illuminance value at each point meets the requirements. Normal headlight evaluation standards from OEMs often include more than one illuminance value measurement requirement; some also have 3 lx, 5 lx, 10 lx, 50 lx, etc. The measurement method for these illuminance values ​​is the same as for 20 lx. Therefore, the entire headlight evaluation requires measuring many points, and only after all measurements are completed can the compliance of the illuminance values ​​at all points be confirmed, resulting in a significant workload.

[0040] In this embodiment, a photosensitive device is pre-placed at points a-e, with its photosensitive probe facing the headlights. After the vehicle is parked in the designated position and the headlights are turned on, the indicator lights on the photosensitive device automatically illuminate when the light shines on it. If the green indicator light is on, it means the illuminance value at that point meets the requirements. If the photosensitive device does not receive a light signal within a set time, it will control the red indicator light to illuminate; if the red indicator light is on, it means the requirements are not met. Photosensitive devices are pre-placed at all illuminance value measurement points required by the headlight evaluation standard. The compliance status of all illuminance values ​​at each point can be simultaneously displayed based on the color of the indicator light at each point. If specific illuminance values ​​need to be measured at individual points, a lux meter can be used to measure them directly at the corresponding points. Using the method of this embodiment, it is possible to quickly confirm whether the headlight illuminance meets the standard requirements, reducing measurement time and improving efficiency. Extensions to this method, such as increasing the number of indicator lights or using indicator lights of different colors, also fall within the scope of this patent's measurement method.

[0041] Example 2

[0042] One embodiment of this disclosure provides a road illuminance measurement system for automotive headlights, including a data acquisition module. The data acquisition module includes a photosensitive device, a photosensitive probe disposed on the photosensitive device, and a measurement module. The measurement module includes a controller and an indicator light. The modules communicate with each other via a wireless connection.

[0043] The data acquisition module is used to acquire the measurement points of the illuminance value of the car headlights and determine the placement location of the photosensitive device;

[0044] The measurement module is used to turn on the headlights when the vehicle is parked in a designated position. The photosensitive probe of the photosensitive device is facing the headlight. When the headlight shines on the photosensitive probe of the photosensitive device, the photosensitive probe collects the illumination information and sends it to the controller of the photosensitive device. The controller then controls the indicator light to illuminate.

[0045] The headlight illuminance measurement points are points, and the headlight illuminance measurement area is enclosed by these points. Each point is converted into a coordinate system position, with the horizontal axis value representing the distance between the measurement point and the front of the vehicle, and the vertical axis value representing the distance between the measurement point and the center line of the lane.

[0046] As one embodiment, the method performed by the system of this disclosure includes: if the evaluation criteria require that the illuminance value in area A (the area enclosed by points a-e) must reach at least 20 lx, since the illuminance value of the headlights decreases as one moves further away from the vehicle along the driving direction, and decreases further to the sides of the vehicle, then as long as the illuminance values ​​at points a-e reach 20 lx, the requirement of at least 20 lx illuminance value in area A can be met.

[0047] The traditional measurement method involves placing an illuminance meter (a device for measuring the illuminance of light) on... Figure 1 At each point shown, the illuminance value is measured sequentially from point a to point e. Each measured value is then compared to 20 lx to confirm whether the illuminance value at each point meets the requirements. Normal headlight evaluation standards from OEMs often include more than one illuminance value measurement requirement; some also have 3 lx, 5 lx, 10 lx, 50 lx, etc. The measurement method for these illuminance values ​​is the same as for 20 lx. Therefore, the entire headlight evaluation requires measuring many points, and only after all measurements are completed can the compliance of the illuminance values ​​at all points be confirmed, resulting in a significant workload.

[0048] The embodiment of the present disclosure is to place the photosensitive device in advance on points a-point e, the photosensitive probe on the photosensitive device is directly opposite the direction of the headlamp, the vehicle is parked in the specified position, the headlamp is turned on, the light is irradiated to the photosensitive device, and then the indicating lamp on the photosensitive device is automatically lighted. If the green indicating lamp is lighted, it represents that the illuminance value of the point meets the requirement, and within the set time, the photosensitive device does not receive the light signal, and then the red indicating lamp is controlled to be lighted, and if the red indicating lamp is lighted, it represents that the requirement is not met. The photosensitive device is placed in advance on all the illuminance value measurement points required by the headlamp evaluation standard, and the compliance of all the point illuminance values can be displayed at one time according to the color of the indicating lamp of each point. If the specific illuminance value of an individual point needs to be measured, the illuminometer can be directly used to measure the corresponding point. By using the method of the embodiment of the present disclosure, whether the headlamp illuminance meets the standard requirement can be quickly confirmed, the measurement time is reduced, and the efficiency is improved. The photosensitive device increasing the number of indicating lamps or using other color indicating lamps to display all belong to the measurement method of the present patent.

[0049] Embodiment 3

[0050] In an embodiment of the present disclosure, a non-transitory computer readable storage medium is provided for storing computer instructions, which, when executed by a processor, implement the automobile headlamp road surface illuminance measurement method.

[0051] Embodiment 4

[0052] In an embodiment of the present disclosure, an electronic device is provided, comprising a processor, a memory and a computer program; wherein the processor is connected with the memory, and the computer program is stored in the memory; when the electronic device is running, the processor executes the computer program stored in the memory, so that the electronic device executes the automobile headlamp road surface illuminance measurement method.

[0053] The present disclosure is described with reference to flowcharts and / or block diagrams of the method, device (system) and computer program product according to the embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a machine that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The function of one flow or multiple flows and / or blocks Figure 1 The device that realizes the function specified in one block or multiple blocks.

[0054] These computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable data processing devices to generate a computer implemented process, so that the instructions executed on the computer or other programmable data processing devices provide a process for implementing the functions specified in the flowchart Figure 1 one flow or multiple flows and / or the functions specified in the block Figure 1 one flow or multiple flows and / or the functions specified in the block

[0055] The above describes the specific embodiments of the present disclosure in conjunction with the drawings, but is not a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present disclosure without creative labor are still within the protection scope of the present disclosure.

Claims

1. A method of measuring road surface illuminance of an automobile headlamp, characterized by, The application relates to a kind of automobile headlamp road illumination measuring method, comprising the following steps: Obtaining automobile headlamp illumination value measuring points, and determining the placement position of the photosensitive device; The vehicle opens the headlamp at the specified parking position, the photosensitive probe of the photosensitive device is opposite to the direction of the headlamp, and the indicator light is lit by the controller of the photosensitive device after the photosensitive probe collects the light information when the headlamp irradiates the photosensitive probe. The photosensitive device is a kind of photosensitive device that can convert light signal into electric signal. The photosensitive device is placed at the measuring point required by the headlamp illumination evaluation standard, and the indicator light is set on the top of the photosensitive device. If the illumination value of the light irradiating the photosensitive device reaches or is higher than the limit value in the headlamp illumination evaluation standard, the indicator light of the photosensitive device is automatically lit after the headlamp irradiates the photosensitive device, and the green indicator light represents that the illumination value at the point meets the requirement. The photosensitive probe is set at the position meeting the illumination standard, and the photosensitive device is placed at all headlamp illumination value measuring points. The automobile headlamp illumination value measuring points are points, and the headlamp illumination measuring area is surrounded by the points, each point is converted into the position of the coordinate system, the horizontal coordinate value is the distance between the measuring point and the vehicle head, and the vertical coordinate value is the distance between the measuring point and the center line of the lane. If the evaluation standard requires that the illumination value in the area surrounded by points a to e is at least 20lx, the illumination value in the area a to e meets the requirement of at least 20lx as long as the illumination value of the points a to e reaches 20lx. The photosensitive device is placed at the points a to e in advance, the photosensitive probe of the photosensitive device is opposite to the direction of the headlamp, the indicator light of the photosensitive device is automatically lit after the headlamp irradiates the photosensitive device when the vehicle is parked at the specified position, the green indicator light represents that the illumination value at the point meets the requirement, the red indicator light is lit if the photosensitive device does not receive the light signal within the set time, and the red indicator light represents that the requirement is not met.

2. A method of measuring road surface illuminance of an automobile headlamp as set forth in claim 1, characterized by, The indicator light is set on the top of the photosensitive device.

3. A method of measuring road surface illuminance of an automobile headlamp as set forth in claim 2, characterized by, The indicator light comprises a red indicator light and a green indicator light.

4. A road surface illuminance measuring system for an automobile headlamp, characterized by comprising: The application discloses a kind of automobile headlamp road illumination measuring method, comprising the following steps: A data acquisition module is used to obtain automobile headlamp illumination value measuring points and determine the placement position of the photosensitive device. The measuring module is used for opening the headlamp of the vehicle at a specified parking position, the light-sensing probe of the light-sensing device is opposite to the direction of the headlamp, and the light-sensing probe collects light information after the headlamp irradiates to the light-sensing probe of the light-sensing device.

5. A non-transitory computer-readable storage medium, comprising: The non-transitory computer readable storage medium is used for storing computer instructions, and the computer instructions are executed by the processor to implement the automobile headlamp road surface illumination measurement method in any one of claims 1-3.

6. An electronic device, comprising: The method comprises: A processor, a memory and a computer program, wherein the processor is connected with the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to implement the automobile headlamp road surface illumination measurement method in any one of claims 1-3.

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