Detection device for acquiring a car light illumination parameter

Abstract

An integrated and automated detection device for acquiring light parameters of vehicle lamps, which can simultaneously and real-timely display key information such as the distance from the vehicle lamp to the light probe, the light intensity, and the calculated effective limit distance value. The device comprises a vehicle lamp light source to be detected, a light probe, and a display panel for displaying the light parameters of the vehicle lamp, wherein a distance information display screen and a light distance display screen are arranged on the display panel; and an indication panel for setting the light probe is arranged near the display panel. The device integrates the functions of distance measurement, light intensity measurement, and effective distance calculation and display, and realizes one-stop detection and display of key performance parameters of vehicle lamps. The device automatically processes light signals and calculates the effective limit distance through a main control circuit, and automatically acquires distance information through an automatic distance measuring device, greatly reducing manual intervention and improving detection efficiency and accuracy. The device enables the operator to quickly, comprehensively, and intuitively master the comprehensive lighting effect of the vehicle lamp, and facilitates quick adjustment and judgment.

Description

Technical Field

[0001] This utility model relates to the field of automotive headlight testing technology, and in particular to a testing device capable of integrating and displaying multiple headlight illumination parameters. Background Technology

[0002] In the fields of automobile manufacturing, repair, and safety inspection, the illumination effect of vehicle lights is a crucial safety indicator. The illuminance, effective illumination distance, and distance between the light source and the inspection point are the core parameters for evaluating their performance.

[0003] Currently, the detection of vehicle headlight illumination parameters typically relies on multiple independent instruments. For example, an illuminance meter is used to measure illuminance, a measuring tape or laser rangefinder is used to manually measure distance, and then the effective illumination distance is estimated using formulas or experience. This fragmented detection method has the following drawbacks:

[0004] The operation is cumbersome and inefficient: it requires operators to use multiple tools and perform recording and calculations, which increases the workload and the probability of errors.

[0005] Data asynchrony: Measurements of different parameters are performed asynchronously, making it difficult to evaluate the overall performance of vehicle lights under a unified benchmark.

[0006] Limited functionality: Existing equipment typically focuses on measuring only a single parameter, lacking an integrated system to simultaneously display multiple parameters crucial for adjusting vehicle lights, such as spacing, illuminance, effective limit distance, and beam pattern break-off point.

[0007] Therefore, there is an urgent need in this field for a detection device that can automatically measure and centrally and intuitively display key vehicle headlight illumination parameters, in order to simplify the operation process and improve the accuracy and efficiency of detection. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide an integrated and automated detection device for acquiring vehicle headlight illumination parameters. This detection device can simultaneously and in real time display a variety of key information such as the distance from the vehicle headlight to the photometer probe, the illuminance, and the calculated effective limit distance value (the effective limit distance value refers to the distance corresponding to the illuminance attenuation to 0.251x when the vehicle headlight is illuminating with high beam).

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] The present invention discloses a detection device for acquiring vehicle headlight illumination parameters, comprising a vehicle headlight source to be tested, a photometer probe, and a display panel for displaying vehicle headlight illumination parameters. The device is characterized in that: the display panel is provided with a distance information display screen that displays the distance between the vehicle headlight source and the photometer probe, and a light distance display screen that displays the effective limit distance value of the vehicle headlight illumination; an indicator plate for setting the photometer probe is provided near the display panel.

[0011] The display panel is also equipped with an illuminance display screen that displays the illuminance of the vehicle headlights detected by the light metering probe.

[0012] The light metering probes are a near-beam light metering probe and a far-beam light metering probe. The indicator plate is located below the display panel, and the near-beam light metering probe and the far-beam light metering probe are arranged in a vertical line.

[0013] The indicator panel has numerical scale lines that indicate the position of the cutoff line when the headlight source is under low beam illumination.

[0014] An automatic distance measuring device is provided on the display panel for measuring the distance between the vehicle headlight source and the light metering probe. This automatic distance measuring device sends the distance information to the main control circuit and the distance information display screen.

[0015] The display panel also features a ray diagram simulating the distance from the headlight source to the effective limit value, providing users with a more intuitive concept of illumination distance.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Highly integrated: It integrates spacing measurement, illuminance measurement, effective distance calculation and display functions into one, realizing one-stop detection and display of key performance parameters of vehicle lights.

[0018] Automation and intelligence: The main control circuit automatically processes the optical signal and calculates the effective limit distance, and the automatic ranging device automatically obtains the spacing information, which greatly reduces manual intervention and improves detection efficiency and accuracy.

[0019] The display is intuitive and comprehensive: multiple dedicated displays show different parameters simultaneously, supplemented by light pattern dividing scale lines, enabling operators to quickly, comprehensively, and intuitively grasp the overall lighting effect of the vehicle lights, facilitating rapid adjustments and judgments.

[0020] Differentiating between low and high beams: By setting up independent low beam and high beam probes, the performance of vehicle headlights in low beam and high beam modes can be accurately measured and evaluated separately. Attached Figure Description

[0021] Figure 1 This is a structural block diagram of the detection device for acquiring vehicle headlight illumination parameters according to this utility model.

[0022] Figure 2 yes Figure 1 A schematic diagram of the display panel.

[0023] Figure 3 This is a block diagram of the main control circuit.

[0024] The attached figures are labeled as follows:

[0025] 1. Spacing information display screen; 2. Illumination distance display screen; 3. Low beam probe interface; 4. High beam probe interface; 5. Automatic distance measuring device; 6. Main control circuit; 7. Numerical scale lines; 8. Display panel; 9. Indicator board; 10. Low beam probe; 11. High beam probe; 12. Vehicle light source; 13. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 As shown, the detection device for acquiring vehicle headlight illumination parameters provided by this utility model includes a display panel 9, an indicator panel 10, a low beam probe 11, a high beam probe 12, an automatic distance measuring device 6, and a main control circuit 7.

[0028] Its core lies in a main control circuit 7, which typically consists of a microprocessor and its peripheral circuits, responsible for signal processing, data calculation, and system control (see [link]). Figure 3 (As shown).

[0029] The detection device is connected to two light-measuring probes mounted on the indicator plate 10: a low beam probe 11 (connected via the low beam probe interface 4) and a high beam probe 12 (connected via the high beam probe interface 5). These probes have built-in photosensitive elements that receive the light emitted by the vehicle headlight source and convert it into an electrical signal, which is then transmitted to the main control circuit 7. The main control circuit 7 calculates the illuminance value of the vehicle headlight source based on the received electrical signal.

[0030] The indicator panel 10 is preferably positioned directly below the display panel 9 (or it can be positioned to the side of the display panel).

[0031] The detection device also integrates the aforementioned automatic ranging device 6, such as an ultrasonic ranging module or a laser ranging module. This automatic ranging device 6 is used to automatically measure the straight-line distance between the vehicle's headlight source and the location of the light-measuring probe, and sends this distance data to the main control circuit 7.

[0032] The main control circuit 7 calculates the effective limit distance of the vehicle headlights based on a pre-stored algorithm, combined with the illuminance signal from the photometer and the distance information from the automatic distance measuring device 6. This calculation can be based on the physical principle that illuminance is inversely proportional to the square of the distance, and a standard illuminance threshold (such as the national standard specifying 0.251x as the endpoint illuminance) is set to inversely estimate the distance at which the illuminance is reached.

[0033] like Figure 2 As shown, the display panel 9 of the detection device has multiple display units. These include displays for "low beam," "high beam," and a distance information display 1 (e.g., labeled "detection distance") that displays the distance measured by the automatic distance measuring device 6 in real time, such as "3.0m," which is the distance between the vehicle headlight source and the light metering probe. An illuminance display 3 (e.g., labeled "real-time illuminance") displays the illuminance value measured by the current light metering probe, such as "125 lx." An illumination distance display 2 (e.g., labeled "effective illumination distance") displays the effective limit distance value calculated by the main control circuit 7, such as "185m."

[0034] The displays for "low beam", "high beam", spacing information display 1, illuminance display 3 and illumination distance display 2 are LCD, LED or OLED displays.

[0035] The illuminance display screen 3 and the illumination distance display screen 2 can be two sets, corresponding to "low beam" and "high beam" respectively. Preferably, the present invention has one illuminance display screen 3 and one illumination distance display screen 2. When in "low beam" state, the main control circuit automatically switches the illuminance display screen 3 and the illumination distance display screen 2 to display the value corresponding to the "low beam" state; when in "high beam" state, the main control circuit also automatically switches the illuminance display screen 3 and the illumination distance display screen 2 to display the value corresponding to the "high beam" state.

[0036] In addition, the panel is printed with numerical scale line 8, which provides reference coordinates for converting distant light rays into parallel light rays, thereby quickly determining whether the headlight pattern is horizontal.

[0037] The indicator plate 10 and the display panel 9 are preferably mounted on a tripod.

[0038] The working principle of this utility model is as follows:

[0039] Place the testing device directly in front of the vehicle headlights and turn on both the device and the headlights. The automatic distance measuring device 6 automatically measures and displays the distance. The light metering probe (selecting either a low beam or high beam probe according to testing needs) receives the illumination, and the main control circuit 7 processes the signal and displays the illuminance in real time. Simultaneously, the main control circuit 7 integrates the distance and illuminance information to calculate the effective illumination distance of the vehicle headlight source, which is then displayed on the illumination distance display screen 2 (it can also calculate the illuminance value equivalent to 25 meters to facilitate engineers in determining whether the illumination meets national standards). Operators can simultaneously observe the data and scale lines on all displays, efficiently completing the headlight debugging and inspection.

[0040] When testing headlights at automotive headlight testing institutions, national standards stipulate that measurements must be taken at a distance of 25 meters to obtain the corresponding illumination data. However, many users (such as legitimate headlight modification shops) are limited by space constraints and cannot actually take measurements at 25 meters. This invention can convert on-site measurements into equivalent illuminance values ​​measured at 25 meters in limited distance spaces (such as distances from below 25 meters to a few meters).

[0041] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A detection device for acquiring vehicle headlight illumination parameters, comprising a vehicle headlight source to be tested, a photometer probe, and a display panel for displaying the vehicle headlight illumination parameters, characterized in that: The display panel is equipped with a distance information display screen that displays the distance between the vehicle headlight source and the light metering probe, and a light distance display screen that displays the effective limit distance value of the vehicle headlight illumination; an indicator plate for setting the light metering probe is provided near the display panel.

2. The detection device for acquiring vehicle headlight illumination parameters according to claim 1, characterized in that: The display panel is also equipped with an illuminance display screen that displays the illuminance of the vehicle headlights detected by the light metering probe.

3. The detection device for acquiring vehicle headlight illumination parameters according to claim 2, characterized in that: The light metering probes are a near beam light metering probe and a far beam light metering probe. The indicator plate is located below the display panel, and the near beam light metering probe and the far beam light metering probe are arranged in a vertical line.

4. The detection device for acquiring vehicle headlight illumination parameters according to claim 3, characterized in that: The indicator panel has numerical scale lines that indicate the position of the cutoff line when the headlight source is under low beam illumination.

5. The detection device for acquiring vehicle headlight illumination parameters according to claim 4, characterized in that: An automatic distance measuring device is provided on the display panel for measuring the distance between the vehicle headlight source and the light measuring probe.

6. The detection device for acquiring vehicle headlight illumination parameters according to claim 5, characterized in that: The display panel also features a ray diagram simulating the distance from the headlight source to the effective limit value.

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