Measuring equipment and measuring method for defrosting test of automobile headlamp

Abstract

The invention discloses automobile headlamp defrosting test measuring equipment and a measuring method, and relates to the technical field of automobile part testing equipment.The equipment comprises a ventilation box, an air pipe is inserted into one side of the ventilation box, a fan is installed in the air pipe, the interior of the ventilation box is communicated with the interior of a lampshade through a plurality of hoses, and the hose is connected with the lampshade. A regulating valve, a pressure regulator and a pressure sensor are sequentially installed on the hose, the regulating valve is located at the end, close to the ventilation box, of the hose, the pressure sensor is located at the end, close to the lampshade, of the hose, and the pressure sensor is electrically connected with the regulating valve and the pressure regulator. According to the invention, through the plurality of hoses and the regulating valves, the pressure regulators and the pressure sensors on the hoses, the pressure of air flow entering the lampshade can be accurately controlled, the air flow is ensured to fluctuate in a preset range, the air flow distribution in the test process is greatly optimized, and thus the test accuracy and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile component testing equipment, in particular to automobile headlamp defrosting test measuring equipment and a measuring method. Background Art

[0002] Car headlamps are prone to condensation in complex climate environments, which affects lighting effects and safety. Traditional headlamp defrost tests are mainly conducted in car lamp anti-aerosol test chambers. The preparation process takes several days and the test process lasts for dozens of hours, which is extremely inefficient. In addition, the test results are greatly affected by changes in climate conditions, have poor repeatability, and are difficult to accurately reproduce through numerical simulation. In addition, the monitoring and analysis methods for condensate during the test process are not accurate and convenient enough, and cannot meet the needs of modern car headlamp research and development for efficient and accurate testing.

[0003] Based on this, an automobile headlamp defrosting test measurement device and a measurement method are now provided, which can eliminate the disadvantages of the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a vehicle headlamp defrosting test measuring device and a measuring method to solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The vehicle headlamp defrosting test and measurement equipment comprises a ventilation box, an air duct is inserted into one side of the ventilation box, a fan is installed inside the air duct, the interior of the ventilation box is connected with the interior of a lampshade through a plurality of hoses, a regulating valve, a pressure regulator and a pressure sensor are installed on the hoses in sequence, the regulating valve is located at one end of the hose close to the ventilation box, the pressure sensor is located at one end of the hose close to the lampshade, the pressure sensor is electrically connected to the regulating valve and the pressure regulator, an installation hole for inserting and installing a humidifier is opened at the upper end of the lampshade, two light sources are arranged directly above the lampshade, and a camera is installed directly in front of the lampshade through a camera bracket.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0008] In an optional solution: a second mounting hole is provided at the upper end of the ventilation box, and the second mounting hole is used for inserting and mounting a data recorder.

[0009] In an optional solution: the data logger includes a humidity meter data logger and a thermometer data logger.

[0010] In an optional solution: an air pressure valve is installed on one side of the ventilation box.

[0011] In an optional solution: a mounting hole three is opened at the upper end of the lampshade, and the mounting hole three is used to insert and install a humidity sensor, and a reflector is provided inside the lampshade, thermocouples are installed on the inner surface of the lampshade glass and the surface of the reflector, and a heating element is installed on the reflector, and the thermocouple and the heating element are electrically connected.

[0012] In an optional solution: the light source is a halogen bulb H12.

[0013] The automobile headlamp defrosting test measurement method comprises the following steps:

[0014] S1: First, the ventilation box and the lampshade are modified, and the ventilation box and the lampshade are connected through several hoses;

[0015] S2: Next, inject a proper amount of water into the humidifier, and reduce the temperature of the lampshade glass to below the dew point through the external cooling medium. Then, start the humidifier to evaporate the water and condense it on the inner surface of the glass. The humidity sensor monitors the relative humidity inside the lampshade to ensure that all evaporated water condenses on the front glass.

[0016] S3: After the humidifier has finished fogging, the humidity sensor indicates that the humidity inside the lampshade has reached a predetermined level, the humidifier is pulled out, and the insertion position of the humidifier is sealed;

[0017] S4: Next, the fan is started to drive the air flow into the ventilation box, and the air flow enters the lamp housing through a plurality of hoses. The data logger is used to measure and record the relative humidity and temperature of the air supplied to each hose. When the air pressure inside the ventilation box is too high, the air flow is discharged through the air pressure valve;

[0018] S5: The airflow enters the interior of the hose, and then the airflow pressure entering the lampshade is adjusted to a predetermined value through the regulating valve and the pressure regulator, and the airflow pressure is monitored in real time using a pressure sensor to ensure that it fluctuates within a predetermined range;

[0019] S6: Start the light source to provide lighting for the lampshade, start the camera, and start recording the state of the lampshade during the test.

[0020] In step S1, the following steps are also included:

[0021] S11: a second mounting hole is provided at the upper end of the ventilation box, a plurality of first ventilation holes are provided at a side of the ventilation box close to the lampshade, and an air duct is inserted and installed at one side of the ventilation box, and a fan is installed inside the air duct;

[0022] S12: Then, inserting a data logger into the ventilation box through the second installation hole to measure and record the relative humidity and temperature of the air supplied to each ventilation hole;

[0023] S13: A plurality of ventilation holes 2 are provided on one side of the lampshade close to the ventilation box, and mounting holes 1 and 3 are provided on the upper end of the lampshade;

[0024] S14: Install thermocouples on the inner surface of the lampshade glass and the surface of the reflector, and install a heating element on the reflector. Then, insert a humidifier and a humidity sensor into the lampshade through the first and third mounting holes respectively.

[0025] S15: Next, one end of the hose is connected to the inside of the ventilation box through the ventilation hole 1, and the other end of the hose is connected to the inside of the lampshade through the ventilation hole 2;

[0026] S16: Two light sources are arranged directly above the lampshade, and a camera is installed directly in front of the lampshade through a camera bracket.

[0027] In step S6, the camera takes two photos at each time point, and the light source illuminates the lampshade in an alternating manner.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention can accurately control the airflow pressure entering the lampshade through a plurality of hoses and a regulating valve, a pressure regulator and a pressure sensor on each hose to ensure that the airflow pressure fluctuates within a predetermined range, thereby greatly optimizing the airflow distribution during the test and improving the accuracy and efficiency of the test.

[0030] 2. The present invention integrates multiple test functions into one device through the ventilation box, hose, lampshade and other components assembled thereon, thereby avoiding the complexity and time consumption caused by the need for multiple devices to work together in traditional testing. This integrated design enables the device to start quickly and reach test conditions, thereby greatly shortening the test preparation time; by optimizing the startup process and parameter settings of the equipment, the present invention can enable the equipment to reach a stable test state in a short time; and this equipment is suitable for testing automobile headlights of different models and specifications, and has strong adaptability. By adjusting relevant parameters and configurations, it can meet different test requirements, providing strong support for the research and development and quality control of automobile headlights.

[0031] 3. The present invention uses a data recorder, which includes a hygrometer data recorder and a thermometer data recorder, to measure and record the relative humidity and temperature of the air supplied to each hose in real time, uses a humidity sensor and a thermocouple to monitor the humidity and temperature in the lampshade in real time, and uses a pressure sensor to understand the airflow pressure value passing through each hose. The above data provide a reliable basis for subsequent data analysis; the heating element can also adjust the ambient temperature in time, thereby effectively preventing the condensation of water vapor evaporated from the outside of the lampshade, ensuring that subsequent tests proceed normally; in addition, the camera can also record the state of the lampshade during the test, which is convenient for intuitive analysis and evaluation of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The present invention is a schematic structural diagram of the automobile headlamp defrosting test and measurement equipment.

[0033] Figure 2 The present invention is a flow chart of a measuring method of the automobile headlamp defrosting test measuring device.

[0034] Figure 3 This is a flow chart of step S1 in the measuring method of the automobile headlamp defrosting test measuring device of the present invention.

[0035] Notes on the accompanying drawings: 1. Ventilation box; 2. Fan; 3. Air pressure valve; 4. Data logger; 5. Hose; 6. Regulating valve; 7. Pressure regulator; 8. Pressure sensor; 9. Lamp cover; 10. Humidifier; 11. Humidity sensor; 12. Light source; 13. Camera. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1

[0038] In one embodiment, Figure 1 As shown, the automobile headlamp defrost test and measurement equipment includes a ventilation box 1, an air duct is inserted into one side of the ventilation box 1, a fan 2 is installed inside the air duct, the interior of the ventilation box 1 is connected with the interior of a lampshade 9 through a plurality of hoses 5, a regulating valve 6, a pressure regulator 7 and a pressure sensor 8 are installed on the hose 5 in sequence, the regulating valve 6 is located at one end of the hose 5 close to the ventilation box 1, the pressure sensor 8 is located at one end of the hose 5 close to the lampshade 9, the pressure sensor 8 is electrically connected to the regulating valve 6 and the pressure regulator 7, an installation hole 1 for inserting and installing a humidifier 10 is opened at the upper end of the lampshade 9, two light sources 12 are arranged directly above the lampshade 9, and a camera 13 is installed directly in front of the lampshade 9 through a camera bracket.

[0039] In this embodiment, first, according to the test requirements, the predetermined value of the airflow pressure is set, the humidity output of the humidifier 10 is set, and the brightness and working time of the light source 12 are set; then the humidifier 10 is started to provide a humidified airflow to the inside of the lampshade 9; next, the fan 2 is started to drive the airflow into the ventilation box 1, and the airflow enters the lampshade 9 through a number of hoses 5; as the airflow enters the hose 5, the pressure of the airflow entering the lampshade 9 is adjusted to a predetermined value through the regulating valve 6 and the pressure regulator 7, and the airflow pressure is monitored in real time using the pressure sensor 8 to ensure that it fluctuates within a predetermined range; finally, the light source 12 is started to provide lighting for the lampshade 9, and the camera 13 is started to start recording the state of the lampshade 9 during the test.

[0040] In an optional embodiment, a second mounting hole is opened at the upper end of the ventilation box 1, and the second mounting hole is used for inserting and mounting the data recorder 4.

[0041] It should be noted that the second mounting hole at the upper end of the ventilation box 1 is for the convenience of installing the data recorder 4 .

[0042] In an optional embodiment, the data logger 4 includes a hygrometer data logger and a thermometer data logger.

[0043] It should be noted that the data recorder 4 includes a hygrometer data recorder and a thermometer data recorder, which are used to record humidity and temperature data during the test.

[0044] In an optional embodiment, an air pressure valve 3 is installed on one side of the ventilation box 1 .

[0045] It should be noted that the main function of the air pressure valve 3 is to adjust the air pressure inside the ventilation box 1; when the air pressure inside the ventilation box 1 exceeds the set value, the air pressure valve 3 will automatically open to release excess air pressure to prevent the ventilation box from being damaged due to overpressure or a safety accident from occurring.

[0046] In an alternative embodiment, if Figure 1 As shown, a mounting hole three is opened at the upper end of the lampshade 9, and the mounting hole three is used to insert and install the humidity sensor 11, and a reflector is provided inside the lampshade 9, and thermocouples are installed on the inner surface of the lampshade 9 glass and the surface of the reflector, and a heating element is installed on the reflector, and the thermocouple and the heating element are electrically connected.

[0047] It should be noted that a mounting hole three is also provided at the upper end of the lampshade 9 for inserting and installing a humidity sensor 11 to further monitor the humidity inside the lampshade 9; a reflector is provided inside the lampshade 9, and thermocouples are installed on the inner surface of the glass and the surface of the reflector for measuring the temperature; a heating element is also installed on the reflector to simulate the heating effect during the defrosting process.

[0048] In an optional embodiment, the light source 12 is a halogen bulb H12.

[0049] It should be noted that the halogen bulb H12 can provide stable and high-intensity lighting, ensuring that the lampshade 9 obtains sufficient lighting brightness during the test, thereby more accurately simulating the actual usage scenario; at the same time, the halogen bulb H12 has high durability and reliability, can meet the needs of long-term testing, and ensure the continuity and accuracy of the test.

[0050] The above embodiment discloses a vehicle headlamp defrosting test and measurement device, wherein, firstly, according to the test requirements, a predetermined value of the airflow pressure is set, the humidity output of the humidifier 10 is set, and the brightness and working time of the light source 12 are set; then, the humidifier 10 is started to provide a moist airflow to the inside of the lampshade 9, and the humidity adjustment inside the lampshade 9 is monitored in real time by the humidity sensor 11, and the temperature of the glass during the atomization process is monitored in real time by the thermocouple to see whether it is within a reasonable range. The ambient temperature can be adjusted in time by the heating element, thereby effectively preventing the condensation of the water vapor evaporated from the outside of the lampshade 9, and ensuring that the subsequent test is carried out normally; next, the humidifier 10 is started. The fan 2 drives the air flow into the ventilation box 1, and the air flow enters the lampshade 9 through a number of hoses 5. The data recorder 4 is used to measure and record the relative humidity and temperature of the air supplied to each hose 5. When the air pressure inside the ventilation box 1 is too high, the air flow will be discharged through the air pressure valve 3; as the air flow enters the hose 5, the pressure of the air flow entering the lampshade 9 is adjusted to a predetermined value through the regulating valve 6 and the pressure regulator 7, and the pressure sensor 8 is used to monitor the air flow pressure in real time to ensure that it fluctuates within a predetermined range; finally, the light source 12 is started to provide lighting for the lampshade 9, and the camera 13 is started to start recording the status of the lampshade 9 during the test.

[0051] Example 2

[0052] In one embodiment, Figure 2 and Figure 3 As shown, the automobile headlamp defrosting test measurement method comprises the following steps:

[0053] S1: First, the ventilation box 1 and the lampshade 9 are modified and assembled;

[0054] S2: Next, a proper amount of water is injected into the humidifier 10, and the temperature of the lampshade 9 glass is reduced to below the dew point through the external cooling medium, and then the humidifier 10 is started to evaporate the water and condense on the inner surface of the glass; the humidity sensor 11 monitors the relative humidity inside the lampshade 9 to ensure that all evaporated water condenses on the front glass;

[0055] S3: After the humidifier 10 has finished fogging, the humidity sensor 11 indicates that the inside of the lampshade 9 has reached a predetermined humidity, the humidifier 10 is pulled out, and the insertion position of the humidifier 10 is sealed;

[0056] S4: Next, the fan 2 is started to drive the airflow into the ventilation box 1, and the airflow enters the lampshade 9 through a plurality of hoses 5. The data recorder 4 is used to measure and record the relative humidity and temperature of the air supplied to each hose 5. When the air pressure inside the ventilation box 1 is too high, the airflow will be discharged through the air pressure valve 3;

[0057] S5: the airflow enters the interior of the hose 5, and then the airflow pressure entering the interior of the lampshade 9 is adjusted to a predetermined value through the regulating valve 6 and the pressure regulator 7, and the airflow pressure is monitored in real time using the pressure sensor 8 to ensure that it fluctuates within a predetermined range;

[0058] S6: Start the light source 12 to provide lighting for the lampshade 9, start the camera 13, and start recording the state of the lampshade 9 during the test.

[0059] In step S1, the following steps are also included:

[0060] S11: A second mounting hole is opened at the upper end of the ventilation box 1, a plurality of first ventilation holes are opened on a side of the ventilation box 1 close to the lampshade 9, and an air duct is inserted into one side of the ventilation box 1, and a fan 2 is installed inside the air duct;

[0061] S12: Then, insert the data logger 4 into the ventilation box 1 through the second installation hole to measure and record the relative humidity and temperature of the air supplied to each ventilation hole;

[0062] S13: A plurality of ventilation holes 2 are provided on the side of the lampshade 9 close to the ventilation box 1, and a mounting hole 1 and a mounting hole 3 are provided on the upper end of the lampshade 9;

[0063] S14: Install thermocouples on the inner surface of the lampshade 9 glass and the reflector surface, and install a heating element on the reflector. Then, insert the humidifier 10 and the humidity sensor 11 into the lampshade 9 through the mounting hole 1 and the mounting hole 3 respectively.

[0064] S15: Next, one end of the hose 5 is connected to the inside of the ventilation box 1 through the ventilation hole 1, and the other end of the hose 5 is connected to the inside of the lampshade 9 through the ventilation hole 2;

[0065] S16: two light sources 12 are arranged directly above the lampshade 9, and a camera 13 is installed directly in front of the lampshade 9 via a camera bracket.

[0066] In step S6 , the camera 13 takes two photos at each time point, and the light source 12 illuminates the lampshade 9 in an alternating manner.

[0067] It should be noted that the above method achieves uniform illumination of the condensed water, avoids shadow areas caused by uneven light exposure, and ensures clear and comprehensive observation and recording of experimental phenomena.

[0068] The automobile headlamp defrost test measurement method of Example 2 adopts the automobile headlamp defrost test measurement equipment of Example 1. For the parts in Example 2 that are the same as those in Example 1, please refer to Example 1 and will not be repeated here.

[0069] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. Automobile headlamp defrosting test and measurement equipment, characterized in that: The invention comprises a ventilation box (1), an air duct is inserted into one side of the ventilation box (1), a fan (2) is installed inside the air duct, the interior of the ventilation box (1) is connected to the interior of a lampshade (9) through a plurality of hoses (5), a regulating valve (6), a pressure regulator (7) and a pressure sensor (8) are installed on the hose (5) in sequence, the regulating valve (6) is located at one end of the hose (5) close to the ventilation box (1), the pressure sensor (8) is located at one end of the hose (5) close to the lampshade (9), the pressure sensor (8) is electrically connected to the regulating valve (6) and the pressure regulator (7), the upper end of the lampshade (9) is provided with a mounting hole for inserting and installing a humidifier (10), two light sources (12) are arranged directly above the lampshade (9), and a camera (13) is installed directly in front of the lampshade (9) through a camera bracket.

2. The automobile headlamp defrosting test measuring equipment according to claim 1, characterized in that: A second mounting hole is provided at the upper end of the ventilation box (1), and the second mounting hole is used for inserting and mounting a data recorder (4).

3. The automobile headlamp defrosting test measuring equipment according to claim 2, characterized in that: The data logger (4) comprises a hygrometer data logger and a thermometer data logger.

4. The automobile headlamp defrosting test measuring equipment according to claim 2, characterized in that: An air pressure valve (3) is installed on one side of the ventilation box (1).

5. The automobile headlamp defrosting test and measurement equipment according to claim 1, characterized in that: The upper end of the lampshade (9) is provided with a mounting hole three, the mounting hole three is used to insert and install a humidity sensor (11), and the interior of the lampshade (9) is equipped with a reflector, the inner surface of the glass of the lampshade (9) and the surface of the reflector are both equipped with thermocouples, and a heating element is installed on the reflector, and the thermocouple and the heating element are electrically connected.

6. The automobile headlamp defrosting test measuring equipment according to claim 1, characterized in that: The light source (12) is a halogen bulb H12.

7. Automobile headlamp defrosting test measurement method, characterized in that: The automobile headlamp defrosting test measuring device according to any one of claims 1 to 6 comprises the following steps: S1: First, the ventilation box (1) and the lampshade (9) are modified and assembled; S2: Next, a proper amount of water is injected into the humidifier (10), and the temperature of the lampshade (9) glass is lowered to below the dew point through an external cooling medium, and then the humidifier (10) is started to evaporate the water and condense on the inner surface of the glass; the humidity sensor (11) monitors the relative humidity inside the lampshade (9) to ensure that all evaporated water condenses on the front glass; S3: After the humidifier (10) has finished fogging, the humidity sensor (11) indicates that the interior of the lampshade (9) has reached a predetermined humidity, the humidifier (10) is pulled out, and the insertion position of the humidifier (10) is sealed; S4: Next, the fan (2) is started to drive the air flow into the ventilation box (1), and the air flow enters the lampshade (9) through a plurality of hoses (5). The internal data logger (4) is used to measure and record the relative humidity and temperature of the air supplied to each hose (5). When the air pressure inside the ventilation box (1) is too high, the air flow will be discharged through the air pressure valve (3); S5: the airflow enters the interior of the hose (5), and then the pressure of the airflow entering the interior of the lampshade (9) is adjusted to a predetermined value through the regulating valve (6) and the pressure regulator (7), and the pressure sensor (8) is used to monitor the airflow pressure in real time to ensure that it fluctuates within a predetermined range; S6: Start the light source (12) to provide lighting for the lampshade (9), start the camera (13) and start recording the state of the lampshade (9) during the test.

8. The automobile headlamp defrosting test measurement method according to claim 7, characterized in that: In the step S1, the following steps are also included: S11: a second mounting hole is provided at the upper end of the ventilation box (1), a plurality of first ventilation holes are provided at a side of the ventilation box (1) close to the lampshade (9), and an air duct is inserted and installed at one side of the ventilation box (1), and a fan (2) is installed inside the air duct; S12: Then, insert the data logger (4) into the ventilation box (1) through the second installation hole to measure and record the relative humidity and temperature of the air supplied to each ventilation hole; S13: A plurality of ventilation holes 2 are provided on a side of the lampshade (9) close to the ventilation box (1), and a mounting hole 1 and a mounting hole 3 are provided on an upper end of the lampshade (9); S14: A thermocouple is installed on the inner surface of the lampshade (9) glass and the surface of the reflector, and a heating element is installed on the reflector. Then, a humidifier (10) and a humidity sensor (11) are respectively inserted into the lampshade (9) through the first mounting hole and the third mounting hole; S15: Next, one end of the hose (5) is connected to the interior of the ventilation box (1) through ventilation hole 1, and the other end of the hose (5) is connected to the interior of the lampshade (9) through ventilation hole 2; S16: two light sources (12) are arranged directly above the lampshade (9), and a camera (13) is installed directly in front of the lampshade (9) via a camera bracket.

9. The automobile headlamp defrosting test measurement method according to claim 7, characterized in that: In step S6, the camera (13) takes two photos at each time point, and the light source (12) illuminates the lampshade (9) in an alternating manner.

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