Rainfall simulation rack

Abstract

The utility model discloses a rainfall simulation rack which comprises a closed light insulation experiment box, a simulation rack, a water supply device and a sunlight simulation device. The appearance of the comprehensive simulation rack adopts a closed shading experiment box, so that the interference of an external light source on the optical rainfall sensor is avoided; sliding grooves and sliding blocks matched with the sliding grooves are arranged in a plurality of rod pieces inside, the positions of a glass plate, a lamp and a spray head can be adjusted, the inclination angle of a glass mounting frame is changed by adjusting a swing supporting rod, and the structure of the windshield mounting frame is more concise; the water pump is controlled through the controller, simulation of different rainfall can be achieved, and circulating water is achieved through communication of the lower cavity of the box body; meanwhile, a 5KW xenon short-arc lamp is adopted as a simulation fluorescent lamp source, sunlight similar to the nature is obtained through an AMl.5 optical filter, and the accuracy of collecting and judging rainfall signals and illumination intensity signals is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive windshield wipers, and in particular to a rainfall simulation test bench. Background Technology

[0002] Windshield wipers are an essential safety component of automobiles, playing a crucial role in ensuring safe driving in rainy weather. Modern cars generally use optical rain sensors to automatically control the wipers, adjusting the wiping speed according to different rainfall levels. Optical rain sensors detect and determine rainfall levels by utilizing the changes in reflected light intensity caused by the refraction and scattering of light at the interface between raindrops and air. In complex environmental conditions, optical rain sensors are easily interfered with by sunlight, leading to problems such as the windshield wipers wiping incorrectly and the car lights turning on, off, or switching erroneously. Simulated rain test benches can simulate real-world environments, thereby improving the detection accuracy of optical rain sensors under various rainfall conditions. This ensures that the wipers automatically activate and adjust the wiping frequency when needed, thus enhancing visibility and safety when driving in rainy weather.

[0003] Currently available automotive glass simulated precipitation test benches are relatively simple in function and have limited application range. Moreover, some test equipment has a low degree of automation. Existing data shows that sunlight is an important factor affecting the performance of optical rain sensors. These test benches lack simulation of sunlight factors. Building a new rain simulation bench can accurately simulate complex environmental factors such as sunlight, thereby optimizing the adaptability of optical rain sensors, ensuring that the wipers automatically start and adjust the appropriate wiping frequency when needed, and improving the anti-interference ability of optical rain sensors in actual driving. Utility Model Content

[0004] The purpose of this utility model is to provide a rainfall simulation platform to solve the above-mentioned problems. To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a rainfall simulation platform, comprising a sealed light-blocking experimental chamber, a simulation platform, a water supply device, and a simulated sunlight device. The sealed light-blocking experimental chamber is generally square in shape and hollow inside, housing the simulation platform, water supply device, and simulated sunlight device. The sealed light-blocking experimental chamber is sealed and blocks light. Access slots are provided on both sides of the sealed light-blocking experimental chamber, and cabinet doors are installed in the access slots. The cabinet doors are of a double-opening structure. Casters are installed at the bottom of the sealed light-blocking experimental chamber. The simulation platform includes a frame body, a windshield mounting bracket, and a spray mechanism. The frame body includes a movable first horizontal rod, a movable first vertical rod, and a base frame composed of a pair of fixed second horizontal rods and a pair of fixed second vertical rods. The water supply device includes an outlet pipe, a pumping pipe, a water pump, and a controller system. The system includes a water pump fixedly connected to a supporting pump plate, a water storage chamber at the bottom connected to the sealed light-blocking experimental chamber, an outlet pipe and a pump pipe connected to the water pump, a controller controlling the power of the water pump, and a control valve controlling the flow of water to the two nozzles in the outlet pipe. The simulated sunlight device includes two fixed second vertical rods, the lower end of the vertical rod of each fixed second vertical rod being fixedly connected to the middle of the fixed second vertical rod, so that the second vertical rod forms a frame fixed above the second vertical rod. A fixed fifth horizontal rod is fixedly connected to the second vertical rods. A lamp mounting hinge is movably mounted on the fixed fifth horizontal rod, and the lamp is connected to the fixed fifth horizontal rod through the lamp mounting hinge. The body of the fixed fifth horizontal rod is fixed with a sliding groove, allowing the lamp above to move in the x-axis direction.

[0006] As a preferred technical solution of the rainfall simulation platform of this utility model, the windshield mounting frame is composed of a glass clamping frame and a glass support frame. The windshield mounting frame includes a movable first vertical rod, a glass clamping frame, a pair of swing support rods, and a pair of fixed support rods. The lower ends of the pair of fixed support rods are respectively connected to the lower ends of the corresponding movable first vertical rods. The upper ends of the fixed support rods are hinged to the lower ends of each longitudinal frame of the glass clamping frame. The upper ends of the third vertical rods of the glass clamping frame are respectively hinged to the upper ends of the corresponding swing support rods. The lower ends of each swing support rod are respectively slidably connected to the corresponding movable first vertical rods. The rod bodies of the pair of movable first vertical rods are composed of profiles and are provided with sliding grooves. The sliding grooves are respectively provided with matching sliders. The sliders are respectively fixedly connected to the lower ends of the corresponding swing support rods, so that the lower ends of the pair of swing support rods can slide along the y-axis on the movable first vertical rods, and the tilt angle of the glass clamping frame on the z-axis can be adjusted.

[0007] As a preferred technical solution of the rainfall simulation test platform of this utility model, each movable first horizontal bar has a groove on its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first vertical bar. The movable first vertical bar slides on the movable first horizontal bar, and the test glass can move in the x-axis direction.

[0008] As a preferred technical solution of the rainfall simulation test platform of this utility model, each fixed second vertical rod has a groove on its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first horizontal rod, so that the movable first horizontal rod can slide on the fixed second vertical rod, and the test glass can move in the y-axis direction.

[0009] As a preferred technical solution of the rainfall simulation platform of this utility model, the spraying mechanism includes a movable fourth horizontal rod, a movable fourth vertical rod, and a fixed first vertical rod. The first vertical rods are respectively erected at the front ends of a pair of fixed second horizontal rods. The two ends of the movable fourth horizontal rods are respectively slidably connected to the corresponding first vertical rods. The movable fourth vertical rods are parallel to the fixed second vertical rods, and each movable fourth vertical rod can move horizontally along the direction of the fourth horizontal rod. Each pair of movable fourth vertical rods is provided with a nozzle mounting base, and two nozzles are mounted on the nozzle mounting base. The body of the fixed first vertical rod is provided with a sliding groove, and the slider is fixedly connected to both ends of each movable fourth horizontal rod, so as to realize the sliding connection between the movable fourth horizontal rod and the first vertical rod. The body of the movable fourth horizontal rod is provided with a sliding groove, and the sliding groove is provided with a matching slider. The slider is fixedly connected to both ends of the movable fourth vertical rod, and each movable fourth vertical rod can move along the x-axis direction along the movable fourth horizontal rod.

[0010] As a preferred technical solution for a rainfall simulation platform of this utility model, the simulated fluorescent lamp is a 5KW short-arc xenon lamp with an AM1.5 optical filter attached to the lamp cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This comprehensive simulation test bench features a sealed, light-shielding experimental chamber to prevent interference from external light sources on the optical rain sensor. Internally, multiple rods incorporate sliding grooves and matching sliders, allowing for adjustment of the glass plate, lamps, and nozzles. Adjusting the swing support rod changes the tilt angle of the glass mounting frame, resulting in a simpler windshield mounting structure. A controller manages the water pump, simulating different rainfall amounts, and water recycling is achieved through a connection in the lower chamber. A 5KW short-arc xenon lamp is used as a simulated sunlight source, and an AM1.5 optical filter provides a near-natural sunlight effect, improving the accuracy of rainfall and light intensity signal acquisition and analysis.

[0013] 2. This integrated simulation test bench employs multiple functional modules to ensure compliance with different rainfall simulation requirements. It can conduct simulated rainfall tests on installed glass and simulated rainfall tests with sunlight added, exploring the impact of multiple factors on the perception of rainfall. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the appearance of the rainfall simulation platform;

[0016] Figure 2 This is a schematic diagram of the overall internal structure of the rainfall simulation platform;

[0017] Figure 3 This is a diagram of the overall internal structure of the rainfall simulation platform;

[0018] Figure 4 This is a schematic diagram of the water supply device.

[0019] Figure 5 This is a schematic diagram of a simulated fluorescent lamp device.

[0020] In the diagram: 1. Sealed light-blocking experimental chamber; 2. Retrieval slot; 3. Cabinet door; 4. Pulley; 5. Lamp mounting hinge; 6. Nozzle; 7. Nozzle mounting base; 8. Water storage chamber; 9. First vertical rod; 10. Second vertical rod; 11. Third vertical rod; 12. Sliding fifth horizontal rod; 13. Fixed fifth horizontal rod; 14. Mounting clamp; 15. Third horizontal rod; 16. Swinging support rod; 17. Movable first vertical rod; 18. Movable first horizontal rod; 19. Fixed support rod; 20. Fixed second vertical rod; 21. Fixed second horizontal rod; 22. Sliding fourth horizontal rod; 23. Movable fourth vertical rod; 24. Control valve; 25. Water outlet pipe; 26. Controller; 27. Water pump; 28. Water pump support plate; 29. ​​Water pump pipe; 30. Simulated fluorescent lamp; 31. AM1.5 optical filter. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] In the attached diagram, all identical reference numerals refer to the same components.

[0023] Example 1

[0024] like Figure 1-5 As shown, a rainfall simulation platform is provided: the exterior is a sealed light-blocking experimental chamber 1, and the interior includes a simulation platform, a water supply device, and a simulated sunlight device.

[0025] The sealed light-blocking test chamber 1 has a square structure with a hollow interior, where the simulation platform, water spray device and simulated sunlight device are located.

[0026] The simulation platform includes a frame body, a windshield mounting bracket, and a spray mechanism;

[0027] The frame body includes a movable first horizontal bar 18, a movable first vertical bar 17, and a base frame composed of a pair of fixed second horizontal bars 21 and a pair of fixed second vertical bars 20.

[0028] The windshield mounting bracket consists of a glass clamping frame and a glass support frame. The glass clamping frame is composed of a pair of third horizontal rods 15 and third vertical rods 11 connected end to end. The glass support frame is composed of a swing support rod 16 and a fixed support rod 19. Adjusting the movement of the swing support rod 16 on the first vertical rod 17 can adjust the tilt angle of the glass clamping frame.

[0029] The spraying mechanism includes a movable fourth horizontal rod 22, a movable fourth vertical rod 23, and a fixed first vertical rod 9. The first vertical rod 9 stands upright at the front end of a pair of fixed second horizontal rods 21. The two ends of the movable fourth horizontal rod 22 are slidably connected to the corresponding first vertical rods 9. The movable fourth vertical rod 23 runs along the fixed second vertical rod 20, and each movable fourth vertical rod 23 can move horizontally along the direction of the fourth horizontal rod 22. A nozzle mounting base 7 is provided on each pair of movable fourth vertical rods 23, and two nozzles 6 are mounted on the nozzle mounting base 7.

[0030] The water supply device includes a water outlet pipe 25, a water pumping pipe 29, a water pump 28, and a controller 26 system. The water pump 27 is fixedly connected to the supporting water pump plate 28, and a water storage chamber 8 is provided at the bottom, which is connected to the sealed light-blocking experimental chamber 1.

[0031] The simulated sunlight device includes two fixed second upright poles 10. The lower end of the vertical pole of each fixed second upright pole 10 is fixedly connected to the middle part of the fixed second vertical pole 20, so that the second upright pole 10 forms a gantry fixed above the second vertical pole 20. The fixed fifth horizontal pole 13 is fixedly connected to the second upright pole 10. The lamp mounting hinge 5 is movably mounted on the fixed fifth horizontal pole 13. The lamp 30 is connected to the fixed fifth horizontal pole 13 through the lamp mounting hinge 5.

[0032] Furthermore, the sealed light-blocking test chamber 1 is completely sealed to reduce interference from external light on the optical rain sensor attached to the test glass. The sealed light-blocking test chamber has access slots 2 on both sides, with cabinet doors 3 installed in these slots. The cabinet doors 3 have a double-opening structure, and the lower part of the sealed light-blocking test chamber 1 is equipped with casters 4 for easy movement.

[0033] The windshield mounting bracket includes a movable first vertical rod 17, a glass clamping frame, a pair of swing support rods 16, and a pair of fixed support rods 19. The lower ends of the pair of fixed support rods 19 are respectively connected to the lower ends of the corresponding movable first vertical rods 17. The upper ends of the fixed support rods 19 are hinged to the lower ends of each longitudinal frame of the glass clamping frame. The upper ends of the third vertical rods 11 of the glass clamping frame are respectively hinged to the upper ends of the corresponding swing support rods 16. The lower ends of each swing support rod 16 are respectively slidably connected to the corresponding movable first vertical rods 17.

[0034] Furthermore, the rod bodies of the pair of movable first vertical rods 17 are made of profiles and each has a sliding groove. The sliding grooves are respectively provided with matching sliders. The sliders are fixedly connected to the lower ends of the corresponding swing support rods 16, so that the lower ends of the pair of swing support rods 16 can slide along the y-axis on the movable first vertical rods 17 to adjust the tilt angle of the glass clamping frame on the z-axis.

[0035] Furthermore, each movable first horizontal bar 18 has a groove on its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first vertical bar 17, which allows the movable first vertical bar 17 to slide on the movable first horizontal bar 18, thereby realizing the movement of the test glass in the x-axis direction.

[0036] Furthermore, each fixed second vertical rod 20 has a groove on its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first horizontal rod 18, which allows the movable first horizontal rod 18 to slide on the fixed second vertical rod 20, thereby realizing the movement of the test glass in the y-axis direction.

[0037] Furthermore, the fifth horizontal bar 13 is fixed with a groove, which allows the lamp 25 above to move along the x-axis.

[0038] Furthermore, the body of the fixed first upright rod 9 is provided with a sliding groove, and each sliding groove is provided with a matching slider. The slider is fixedly connected to both ends of each sliding fourth horizontal rod 22, which enables the sliding connection between the sliding fourth horizontal rod 22 and the first upright rod 9, thereby realizing the movement of the nozzle in the z-axis direction. The body of the sliding fourth horizontal rod 22 is provided with a sliding groove, and each sliding groove is provided with a matching slider. The slider is fixedly connected to both ends of the movable fourth vertical rod 23, which enables each movable fourth vertical rod 23 to move along the sliding fourth horizontal rod 22 in the x-axis direction, thereby adjusting the position of the nozzle.

[0039] Furthermore, the third horizontal bar 15 of the glass clamping frame is provided with two slots, and two mounting clips 14 are provided at the upper end of the slots to clamp and fix the glass.

[0040] Furthermore, in the water supply device, the outlet pipe 25 and the pumping pipe 29 are connected to the water pump 28. The power of the water pump 28 is controlled by the controller 26, and the water flow from the outlet pipe 25 to the two nozzles 6 is controlled by the control valve 24 to achieve the simulation of different rainfall requirements.

[0041] Furthermore, a 5KW short-arc xenon lamp is used as a simulated daylight lamp 30, with an AM1.5 optical filter 31 attached to the lamp cover to obtain light with a wavelength similar to that of sunlight, thereby achieving accurate simulation of sunlight.

[0042] The operation method of the rainfall simulation test platform of this invention is as follows:

[0043] During the test, the windshield was first installed on the glass clamping frame using a mounting clip. Then, an optical rain sensor was installed on the windshield. The tilt angle of the glass clamping frame was adjusted by adjusting the movable connection position of the swing support rod 16 on the movable first vertical rod 17 to adjust the installation angle of the windshield.

[0044] Simulated rainfall experiment:

[0045] A nozzle is installed on the nozzle mounting base 7. The sliding connection between the fifth horizontal rod 12 and the third vertical rod 11 is controlled to adjust the movement of the nozzle 6 in the z-axis direction. The nozzle 6 is mounted on the nozzle mounting base 7. The movement of the nozzle 6 in the x-axis direction is controlled by controlling the sliding of the movable fourth vertical rod 23 on the sliding fourth horizontal rod 22. After the test starts, the power of the water pump 27 is controlled by the controller 26. Water flows in from the pump pipe 29 and flows out through the outlet pipe 25. By controlling the control valve 31, simulation of different rainfall amounts can be achieved. The water that impacts the glass enters the water storage chamber 8 at the bottom, which is connected to the sealed light-blocking experimental chamber 1, thus realizing the function of water recycling.

[0046] Simulated rainfall experiment incorporating sunlight:

[0047] A 5KW short-arc xenon lamp is used as a simulated daylight lamp 30. An AM1.5 optical filter 31 is attached to the lamp cover and mounted on the lamp mounting hinge 5. The light from the 5KW short-arc xenon lamp approximates natural sunlight. By controlling the sliding of the lamp mounting hinge 5 on the fixed fifth horizontal rod 13, the lamp 30 above can be moved in the x-axis direction.

[0048] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rainfall simulation platform, characterized in that, The test chamber includes a sealed light-blocking test chamber (1), a simulation platform, a water supply device, and a simulated sunlight device. The sealed light-blocking test chamber (1) has a square structure and is hollow inside. The simulation platform, water supply device, and simulated sunlight device are located inside. The sealed light-blocking test chamber (1) is sealed and blocks light. The sealed light-blocking test chamber has openings on both sides with slots (2). Cabinet doors (3) are installed in the slots (2). The cabinet doors (3) have a double-opening structure. The lower part of the sealed light-blocking test chamber (1) is equipped with casters. 4) The simulation platform includes a frame body, a windshield mounting bracket, and a spray mechanism. The frame body includes a movable first horizontal bar (18), a movable first vertical bar (17), and a base frame composed of a pair of fixed second horizontal bars (21) and a pair of fixed second vertical bars (20). The water supply device includes an outlet pipe (25), a pumping pipe (29), a water pump (27), and a controller (26) system. The water pump (27) is fixedly connected to the supporting pump plate (28), and the bottom is equipped with A water storage chamber (8) is provided, which is connected to the sealed light-blocking experimental chamber (1). The water outlet pipe (25) and the water pump (29) are connected to the water pump (27). The power of the water pump (27) is controlled by the controller (26). The water outlet pipe (25) is controlled by the control valve (24) to control the amount of water flowing to the two nozzles (6). The simulated sunlight device includes two fixed second upright rods (10). The lower end of the vertical rod of each fixed second upright rod (10) is connected to the fixed second vertical rod (20). The middle part of the second vertical rod (10) is fixedly connected, so that the second vertical rod (10) forms a frame fixed above the second vertical rod (20). The fifth horizontal rod (13) is fixedly connected to the second vertical rod (10). The lamp mounting hinge (5) is movably installed on the fifth horizontal rod (13). The lamp (30) is connected to the fifth horizontal rod (13) through the lamp mounting hinge (5). The fifth horizontal rod (13) has a sliding groove fixed on its body, which allows the lamp (30) above to move in the x-axis direction.

2. The rainfall simulation platform according to claim 1, characterized in that, The windshield mounting frame consists of a glass clamping frame and a glass support frame. The windshield mounting frame includes a movable first vertical rod (17), a glass clamping frame, a pair of swing support rods (16), and a pair of fixed support rods (19). The lower ends of the pair of fixed support rods (19) are respectively connected to the lower ends of the corresponding movable first vertical rods (17). The upper ends of the fixed support rods (19) are hinged to the lower ends of each longitudinal frame of the glass clamping frame. The upper ends of the third vertical rods (11) of the glass clamping frame are respectively connected to the lower ends of the corresponding... The upper end of the swing support rod (16) is hinged, and the lower end of each swing support rod (16) is slidably connected to the corresponding movable first vertical rod (17). The rod body of a pair of movable first vertical rods (17) is made of profile and is provided with a sliding groove. The sliding groove is provided with a matching slider. The slider is fixedly connected to the lower end of the corresponding swing support rod (16), so that the lower end of a pair of swing support rods (16) can slide along the y-axis on the movable first vertical rod (17), and the tilt angle of the glass clamping frame on the z-axis can be adjusted.

3. The rainfall simulation platform according to claim 1, characterized in that, Each movable first horizontal bar (18) has a groove in its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first vertical bar (17). The movable first vertical bar (17) slides on the movable first horizontal bar (18), and the test glass can move in the x-axis direction.

4. The rainfall simulation platform according to claim 1, characterized in that, Each fixed second vertical rod (20) has a groove in its body, and a matching slider is provided in the groove. The slider is fixedly connected to both ends of each movable first horizontal rod (18), so that the movable first horizontal rod (18) can slide on the fixed second vertical rod (20), and the test glass can move in the y-axis direction.

5. The rainfall simulation platform according to claim 1, characterized in that, The spraying mechanism includes a movable fourth horizontal rod (22), a movable fourth vertical rod (23), and a fixed first vertical rod (9). The first vertical rod (9) is erected at the front end of a pair of fixed second horizontal rods (21). The two ends of the movable fourth horizontal rod (22) are slidably connected to the corresponding first vertical rods (9). The movable fourth vertical rod (23) is parallel to the fixed second vertical rod (20), and each movable fourth vertical rod (23) can move horizontally along the direction of the fourth horizontal rod (22). A nozzle mounting base (7) is provided on each pair of movable fourth vertical rods (23), and two nozzles (6) are mounted on the nozzle mounting base (7). The fixed first vertical rod (9) has a groove on its body. The slider is fixedly connected to both ends of each sliding fourth horizontal rod (22), so that the sliding fourth horizontal rod (22) and the first vertical rod (9) can be slidably connected. The sliding fourth horizontal rod (22) has a groove on its body. The groove is provided with a matching slider. The slider is fixedly connected to both ends of the movable fourth vertical rod (23). Each movable fourth vertical rod (23) can move along the sliding fourth horizontal rod (22) in the x-axis direction.

6. The rainfall simulation platform according to claim 1, characterized in that, The simulated fluorescent lamp (30) is a 5KW short-arc xenon lamp with an AM1.5 optical filter (31) attached to the lamp cover.

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