Natural light environment simulation test equipment applied to indoor field test

Abstract

The invention relates to the technical field of environment simulation test equipment, in particular to natural light environment simulation test equipment applied to indoor site test, which comprises a background light illumination system, a sunlight backlighting simulation system, a vehicle lamp contrast simulation system, a street lamp simulation system, a lightning simulation system and a control system. The natural light environment simulation test equipment applied to the indoor site test has a complex light environment simulation effect of multi-element interaction, and provides a stable and uniform background light environment under different illuminance and color temperature parameter settings; meanwhile, the system cooperates with a sunlight backlighting simulation system, a vehicle lamp contrast simulation system, a street lamp simulation system and a lightning simulation system to form a complex illumination environment, and is especially suitable for the test of a complex traffic environment.

Description

Technical Field

[0001] The invention relates to the technical field of environmental simulation test equipment, and in particular to natural light environment simulation test equipment applied to indoor field testing. Background Art

[0002] As one of the three pillars, field testing is of great significance to vehicle development. However, due to the influence of seasons and weather, field testing conditions and test cycles are not controllable. In order to provide a stable and repeatable test environment, improve test efficiency, and accelerate the R&D process, the demand for large-scale indoor test environment control systems is increasing. However, the existing lighting environment simulation equipment in the industry has the following shortcomings: the existing traffic light environment simulation equipment usually only considers the overall brightness, and presents the brightness changes by switching lights locally, which cannot guarantee the uniformity of the overall light environment and has poor simulation; the adjustment ability of the existing equipment is limited, especially it is difficult to achieve uniform background light effect in low-light environments, which affects the accuracy of the test results; when simulating the natural weather traffic light environment, the existing equipment lacks contrast test monitoring and feedback, making it difficult to achieve dynamic closed-loop control; most of the existing equipment only considers the overall background light, and there are few test scenes that can be presented. Therefore, improvements are needed. Summary of the invention

[0003] The purpose of the present invention is to provide a natural light environment simulation test device for indoor field testing to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a natural light environment simulation test equipment applied to indoor field testing, comprising a background light illumination system, a sunlight backlight simulation system, a vehicle light comparison simulation system, a street light simulation system, a lightning simulation system and a control system; The background lighting system uses customized LED lamps with constant current power supply to provide uniform and stable background lighting for the test environment. It can be divided into different test units according to the size of the site. Each unit has the ability to operate independently and is linked and controlled according to preset parameters through the control system. The illumination and color temperature are continuously adjustable, and the intensity and parameters of the ambient light can be accurately controlled. The sunlight backlight simulation system uses professional full-spectrum sunlight simulation lamps as light source input, with adjustable illumination, and cooperates with electric mechanisms to adjust the illumination angle to achieve sunlight backlight effect simulation at different angles and different time periods; The headlight comparison simulation system sets two headlights in the opposite direction of the vehicle, and the headlight spacing and height are adjustable, so as to simulate the headlight comparison effect of various passenger cars and commercial vehicles; The street lamp simulation system is set up to meet the requirements for setting the ambient light in low illuminance for AEB. At the same time, it can be linked with the background light illumination system to form a realistic lighting effect of the urban night. The lightning simulation system uses high-power lightning simulation lamps with adjustable frequency function. Through random flashing settings, it simulates the lightning effect in the natural environment. The comprehensive control realizes the comprehensive control and scene collaborative control of various lighting subsystems through the control system, and is used for simulating various lighting environments for indoor testing.

[0005] Preferably, the vehicle headlight contrast simulation system includes a vehicle headlight contrast mechanism.

[0006] Preferably, the vehicle headlight contrast mechanism includes an installation cross beam. On both ends of the surface of the installation cross beam, there is an activity groove respectively. An inner slider is movably arranged inside the activity groove. A transverse movement motor is installed inside the activity groove. The output end of the transverse movement motor is connected with a first lead screw. The first lead screw passes through the inner slider and is in threaded connection with the threaded hole inside the inner slider. A connecting frame is connected to the surface of the inner slider. An adjustable contrast component is arranged on the connecting frame. At both ends of the installation cross beam, there is a support beam respectively. The support beam is connected with a cleaning component for cleaning the contrast component.

[0007] Preferably, the contrast component includes a lifting frame fixedly connected to the end of the connecting frame. The lifting frame is in a "C" - shaped structure. A group of guiding slide rods are arranged inside the lifting frame. A lifting block is slidably arranged on the guiding slide rods. A threaded sleeve is arranged on the lifting block. A lifting motor is installed at the top of the lifting frame. The output end of the lifting motor is connected with a second lead screw. The second lead screw passes through the lifting block and is in threaded connection with the threaded sleeve. On one side of the lifting block, there is a rotating shaft rotatably installed. On the end of the rotating shaft inserted into the lifting block, there is a driven gear. A conversion motor is installed inside the lifting block. The output end of the conversion motor is connected with a driving gear. The driving gear is meshed with the driven gear. The other end of the rotating shaft is connected with a connecting disc. On one side wall of the connecting disc, there is an installation column fixedly connected. On the side wall of the installation column, there are several groups of installation seats. Lamp boards are installed on the installation seats.

[0008] Preferably, a lamp socket is arranged on the back surface of the lamp board. The lamp socket is snap - fitted in the installation seat. An elastic limiting block is arranged inside the installation seat and abuts against one end of the lamp socket.

[0009] Preferably, a plug is arranged on the lamp socket. A jack is arranged inside the installation seat. The plug is correspondingly inserted into the jack, and sealing rings are arranged around the plug and the jack.

[0010] Preferably, the cleaning component includes a cleaning hood and a water storage tank, an inlet and an outlet are arranged on each side of the cleaning hood, a water spray outlet is opened on the inner wall of one side of the cleaning hood, a pump is arranged in the water storage tank, the water outlet of the pump is connected to a water pipe, the water pipe and the water spray outlet are communicated, the pump is used to extract the cleaning liquid in the water storage tank and spray it out from the water spray outlet, a cleaning motor is installed on the side wall of the cleaning hood and on the outer wall on the same side as the water spray outlet, the output end of the cleaning motor is connected to a cleaning rack, a collecting funnel is connected to the bottom surface of the cleaning hood, the bottom end of the collecting funnel is connected to a clean water pipe, the clean water pipe is connected to a return water pipe, and the return water pipe is communicated with the water storage tank.

[0011] Preferably, a water injection pipe is provided on the top of the water storage tank, which is used to add cleaning liquid to the water storage tank. A drain outlet is provided on the bottom side wall of the water storage tank, which is used to drain the cleaning liquid in the water storage tank.

[0012] Preferably, a liquid-passing inner tube is provided in the middle of the clean water pipe, a plurality of liquid-passing holes are provided on the side wall of the liquid-passing inner tube, the inner end of the liquid-passing inner tube is fixedly connected to the inner end surface of the clean water pipe, and one end opening of the return pipe is connected to the inside of the liquid-passing inner tube, a sealing cover is screwed at the opening of the clean water pipe, the sealing cover is connected to a filter inner core, the filter inner core is sleeved on the liquid-passing inner tube and the end thereof is against the inner end surface of the clean water pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention proposes a natural light environment simulation test equipment for indoor field testing, which has a complex light environment simulation effect of multi-element interaction, provides a stable and uniform background lighting environment under different illumination and color temperature parameter settings, and cooperates with the sunlight backlight simulation system, the car light comparison simulation system, the street light simulation system, and the lightning simulation system to form a complex lighting environment, which is particularly suitable for testing complex traffic environments; by setting an independent illumination sensor in each unit to monitor the lighting effect in real time, and adjusting the single light effect in time according to the feedback of the monitoring parameters, the performance degradation caused by the light decay of the lamp due to long-term use is effectively reduced, and the accuracy and reliability of the system are improved; the self-developed integrated control system can control each lighting subsystem in a unit or as a whole, and the illumination and color temperature lines are adjustable; according to the test needs, the system allows the user to add a scene template as needed, and supports custom settings of parameters. The equipment of the present invention is recommended to be set up in a large space indoor environment, with flexible and changeable layout and good site adaptability.

[0014] 2. The vehicle light comparison simulation system includes a vehicle light comparison mechanism. To simulate different vehicle models, the position of the light board needs to be adjusted. By controlling and starting the transverse movement motor to drive the first screw rod to rotate, the inner slider drives the comparison component to move, thereby adjusting the spacing between the light boards on both sides. By controlling and starting the lifting motor to drive the second screw rod to rotate, the lifting block can be moved up and down, thereby adjusting the illumination height of the light board. By controlling and starting the conversion motor to drive the driven gear to rotate, the rotating shaft, the connecting plate, and the mounting column rotate accordingly, thereby placing light boards of different models in the illumination position. By providing multiple light boards, adjustment is more convenient and the simulation effect is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram showing the composition of the natural light environment simulation test equipment system of the present invention.

[0016] Figure 2 This is a structural diagram of the device of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the vehicle light control mechanism of the present invention.

[0018] Figure 4 This is another viewing angle of the vehicle light comparison mechanism of the present invention.

[0019] Figure 5 It is a partial enlarged view of the vehicle light control mechanism of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the control component of the present invention.

[0021] Figure 7 This is a schematic diagram of the installation and connection structure of the light panel of the present invention.

[0022] Figure 8 It is a schematic diagram of the structure of the mounting seat of the present invention.

[0023] Fig. 9 This is a diagram showing the internal structure of the cleaning cover of the present invention.

[0024] Fig.10 This is a bottom connection diagram of the cleaning cover of the present invention.

[0025] Fig.11 This is a structural diagram of the filter core of the present invention.

[0026] In the figure: installing beam 1, movable groove 2, inner slide block 3, transverse movement motor 4, first screw rod 5, connecting frame 6, lifting frame 7, lifting block 8, guide slide rod 9, lifting motor 10, second screw rod 11, connecting plate 12, rotating shaft 13, driven gear 14, conversion motor 15, driving gear 16, mounting column 17, mounting seat 18, elastic limit block 1801, lamp board 19, lamp holder 20, cleaning cover 21, cleaning motor 22, cleaning frame 23, water spray port 24, collecting funnel 25, clean water pipe 26, liquid inner pipe 27, sealing cover 28, filter inner core 29, water storage tank 30, water supply pipe 31, return pipe 32. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 11 The present invention provides a technical solution: a natural light environment simulation test equipment for indoor field testing, characterized in that it includes a background light illumination system, a sunlight backlight simulation system, a car light comparison simulation system, a street light simulation system, a lightning simulation system and a control system; the background light illumination system adopts customized LED lamps with a constant current power supply to provide a uniform and stable test environment background illumination for the field, and can be divided into different test units according to the size of the field. Each unit has the ability to operate independently, and is linked and controlled according to preset parameters through the control system. The illumination and color temperature are continuously adjustable, and the intensity and parameters of the ambient light are accurately controlled; the sunlight backlight simulation system uses professional full-spectrum sunlight simulation lamps as light source input, the illumination is adjustable, and the electric mechanism is used to adjust the light The illumination angle can be adjusted to simulate the sunlight backlight effect at different angles and different time periods; the headlight comparison simulation system sets two headlights in the opposite direction of the vehicle, and the headlight spacing and height are adjustable, so as to simulate the headlight contrast effect of various passenger cars and commercial vehicles; the street light simulation system sets a set of street light simulation systems to meet the AEB low-illuminance ambient light setting requirements, and can be linked with the background lighting system to form a realistic city night lighting effect; the lightning simulation system adopts high-power lightning simulation lamps with adjustable frequency function, and simulates the lightning effect in the natural environment through random flash settings; the comprehensive control realizes comprehensive control and scene coordinated control of various lighting subsystems through the control system, which is used for simulating various lighting environments for indoor testing.

[0029] This solution has the following functions: 1. Complex light environment simulation effect with multi-element interaction: Provides a stable and uniform background lighting environment under different illumination and color temperature parameter settings, and coordinates the sunlight backlight simulation system, car light comparison simulation system, street light simulation system, and lightning simulation system to form a complex lighting environment, which is particularly suitable for testing in complex traffic environments. 2. Refined closed-loop control: By setting independent illumination sensors in each unit to monitor the lighting effect in real time, the single light effect is adjusted in time according to the feedback of the monitoring parameters, effectively reducing the performance degradation caused by long-term use and light decay of the lamps, and improving the accuracy and reliability of the system. 3. Automated intelligent scene control and operation: The self-developed integrated control system can control each lighting subsystem in units or as a whole, and the illumination and color temperature lines are adjustable. 4. Editable scene settings: According to the test needs, the system allows users to add scene templates as needed, and supports custom settings of parameters. It is recommended to set it in a tall space indoor environment. The layout method is flexible and changeable, with good site adaptability.

[0030] The present invention integrates the functions of multiple functional lamps such as tunnel lamps, sunlight simulation lamps, street lamps, strobe lamps, etc. according to the characteristics of the test site and the test requirements. Closed-loop control is performed through the real-time illumination feedback of the illumination sensor in the site. Provides multiple light scene test templates such as noon, cloudy day, indoor day, dawn and dusk, city night, clear night in the wild, cloudy night in the wild, thunder and lightning in the day, thunder and lightning at night, and vehicle interaction at night. It can be used not only for field testing of intelligent connected vehicles, but also for testing of new energy vehicles and traditional vehicles, and is also suitable for sensor testing.

[0031] The headlight comparison simulation system includes a headlight comparison mechanism. The headlight comparison mechanism includes a mounting cross beam 1. At both ends of the mounting cross beam 1, there is an activity groove 2 opened on the surface. Inside the activity groove 2, there is an inner slider 3 movably arranged. Inside the activity groove 2, there is a transverse movement motor 4 installed. The output end of the transverse movement motor 4 is connected to a first lead screw 5. The first lead screw 5 passes through the inner slider 3 and is in mating connection with the threaded hole inside the inner slider 3. On the surface of the inner slider 3, there is a connecting frame 6 connected. On the connecting frame 6, there is an adjustable comparison component. The comparison component includes a lifting frame 7 fixedly connected to the end of the connecting frame 6. The lifting frame 7 is of a "C" - shaped structure. Inside the lifting frame 7, there is a group of guiding slide rods 9. A lifting block 8 is slidably arranged on the guiding slide rods 9. On the lifting block 8, there is a threaded sleeve. At the top of the lifting frame 7, there is a lifting motor 10 installed. The output end of the lifting motor 10 is connected to a second lead screw 11. The second lead screw 11 passes through the lifting block 8 and is in mating connection with the threaded sleeve. On one side of the lifting block 8, there is a rotating shaft 13 rotatably installed. At one end of the rotating shaft 13 inserted into the lifting block 8, there is a driven gear 14. Inside the lifting block 8, there is a conversion motor 15 installed. The output end of the conversion motor 15 is connected to a driving gear 16. The driving gear 16 is in meshing connection with the driven gear 14. The other end of the rotating shaft 13 is connected to a connecting disc 12. On one side wall of the connecting disc 12, there is a mounting post 17 fixedly connected. On the side wall of the mounting post 17, there are several mounting seats 18. On the mounting seats 18, there are lamp boards 19 installed. The lamp boards 19 are lamps used to simulate headlamps.

[0032] On the back surface of the lamp board 19, there is a lamp holder 20. The lamp holder 20 is snap - fitted in the mounting seat 18. Inside the mounting seat 18, there is an elastic limiting block 1801. The elastic limiting block 1801 abuts against one end of the lamp holder 20. On the lamp holder 20, there is a plug. Inside the mounting seat 18, there is a socket. The plug is correspondingly inserted into the socket, and there is a sealing ring around the plug and the socket. When installing the lamp board 19, only need to insert the lamp holder 20 correspondingly into the mounting seat 18. The elastic limiting block 1801 is first squeezed and contracted and then rebounds and protrudes to clamp the lamp holder 20, which can play a certain fixing function. When disassembling, it is necessary to press the elastic limiting block 1801 inward and then pull the lamp holder 20 outwards with a little force, and the disassembly is more convenient.

[0033] A support beam is provided at each end of the mounting crossbeam 1, and a cleaning component for cleaning the control component is connected to the support beam. The cleaning component includes a cleaning cover 21 and a water tank 30, an inlet and outlet are provided on each side of the cleaning cover 21, a water spray port 24 is provided on the inner wall of one side of the cleaning cover 21, a pump is provided in the water tank 30, a water outlet of the pump is connected to a water pipe 31, the water pipe 31 is connected to the water spray port 24, the pump is used to extract the cleaning liquid in the water tank 30 and spray it out from the water spray port 24, a cleaning motor 22 is installed on the side wall of the cleaning cover 21 and on the outer side wall on the same side as the water spray port 24, the output end of the cleaning motor 22 is connected to a cleaning rack 23, a collecting funnel 25 is connected to the bottom surface of the cleaning cover 21, a clean water pipe 26 is connected to the bottom end of the collecting funnel 25, the clean water pipe 26 is connected to a return pipe 32, and the return pipe 32 is connected to the water tank 30. A water injection pipe is provided at the top of the water storage tank 30, and the water injection pipe is used to add cleaning liquid to the water storage tank 30. A drain port is provided on the side wall of the bottom end of the water storage tank 30, and the drain port is used to drain the cleaning liquid in the water storage tank 30. A liquid-passing inner tube 27 is provided in the middle of the clean water pipe 26, and a plurality of liquid-passing holes are provided on the side wall of the liquid-passing inner tube 27. The inner end of the liquid-passing inner tube 27 is fixedly connected to the inner end surface of the clean water pipe 26, and one end opening of the return water pipe 32 is connected to the inside of the liquid-passing inner tube 27. A sealing cap 28 is screwed at the opening of the clean water pipe 26, and the sealing cap 28 is connected to a filter core 29. The filter core 29 is sleeved on the liquid-passing inner tube 27 and the end thereof is against the inner end surface of the clean water pipe 26.

[0034] In actual use, if it is necessary to adjust the position of the light board 19 to simulate different vehicle models, the first screw rod 5 is driven to rotate by controlling the start of the transverse movement motor 4 so that the inner slider 3 drives the control component to move, thereby adjusting the spacing between the light boards 19 on both sides, and the lifting block 8 can be moved up and down by controlling the start of the lifting motor 10 to rotate the second screw rod 11, thereby adjusting the irradiation height of the light board 19, and the driven gear 14 is driven to rotate by controlling the start of the conversion motor 15, thereby rotating the rotating shaft 13, the connecting plate 12, and the mounting column 17, so that light boards 19 of different models are located in the irradiation position. By providing multiple light boards 19, adjustment is more convenient and the simulation effect is stronger.

[0035] After the equipment has been used for a long time, due to the need to test weather conditions, if the test area is dusty, dust will easily adhere to the surface of the lamp board 19, which will affect the illumination and reduce the test effect. Therefore, the lamp board 19 needs to be cleaned regularly. When cleaning, the lamp boards 19 at both ends are adjusted to move to both sides, so that the mounting column 17 brings the lamp board 19 into the cleaning cover 21, and then the pump pumps the cleaning liquid to the water outlet 24 to spray it toward the lamp board 19. The cleaning motor 22 starts to drive the cleaning frame 23 to rotate to clean the lamp board 19 to avoid dust accumulation affecting the test effect.

[0036] The cleaning water falls into the collecting funnel 25 and then enters the clean water pipe 26. Because of the filter core 29, impurities in the water can be filtered out and blocked outside. Then the water passes through the filter core 29 and the liquid inner tube 27 and flows back to the water storage tank 30 along the return pipe 32, saving a lot of water resources.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural light environment simulation test equipment used for indoor field testing, characterized in that: Including background lighting system, sunlight backlight simulation system, car light comparison simulation system, street light simulation system, lightning simulation system and control system; The background lighting system uses customized LED lamps with constant current power supply to provide uniform and stable background lighting for the test environment. It can be divided into different test units according to the size of the site. Each unit has the ability to operate independently and is linked and controlled according to preset parameters through the control system. The illumination and color temperature are continuously adjustable, and the intensity and parameters of the ambient light can be accurately controlled. The sunlight backlight simulation system uses professional full-spectrum sunlight simulation lamps as light source input, with adjustable illumination, and cooperates with electric mechanisms to adjust the illumination angle to achieve sunlight backlight effect simulation at different angles and different time periods; The headlight comparison simulation system sets two headlights in the opposite direction of the vehicle, and the headlight spacing and height are adjustable, so as to simulate the headlight comparison effect of various passenger cars and commercial vehicles; The street light simulation system meets the AEB low-light ambient light setting requirements by setting up a street light simulation system, and can be linked with the background lighting system to form a realistic city night lighting effect; The lightning simulation system uses a high-power lightning simulation lamp with adjustable frequency to simulate the lightning effect in a natural environment through random flash settings; The comprehensive control realizes comprehensive control and scene coordinated control of various lighting subsystems through the control system, and is used for simulating various lighting environments for indoor testing.

2. The natural light environment simulation test equipment for indoor field testing according to claim 1, characterized in that: The vehicle light comparison simulation system comprises a vehicle light comparison mechanism.

3. The natural light environment simulation test equipment for indoor field testing according to claim 2, characterized in that: The vehicle light comparison mechanism comprises a mounting crossbeam (1), wherein the surfaces of both ends of the mounting crossbeam (1) are respectively provided with a movable groove (2), an inner slider (3) is movably provided inside the movable groove (2), a transverse motor (4) is installed inside the movable groove (2), an output end of the transverse motor (4) is connected to a first screw rod (5), the first screw rod (5) passes through the inner slider (3) and is connected to a threaded hole in the inner slider (3), a connecting frame (6) is connected to the surface of the inner slider (3), an adjustable comparison component is provided on the connecting frame (6), and a support beam is respectively provided at both ends of the mounting crossbeam (1), and a cleaning component for cleaning the comparison component is connected to the support beam.

4. The natural light environment simulation test equipment for indoor field testing according to claim 2, characterized in that: The control component includes a lifting frame (7) fixedly connected to the end of the connecting frame (6). The lifting frame (7) has a "C" - shaped structure. A group of guiding slide rods (9) are arranged inside the lifting frame (7). A lifting block (8) is slidably arranged on the guiding slide rods (9). A threaded sleeve is arranged on the lifting block (8). A lifting motor (10) is installed at the top of the lifting frame (7). The output end of the lifting motor (10) is connected to a second lead screw (11). The second lead screw (11) passes through the lifting block (8) and is in mating connection with the threaded sleeve. A rotating shaft (13) is rotatably installed on one side of the lifting block (8). A driven gear (14) is arranged at one end of the rotating shaft (13) inserted into the lifting block (8). A conversion motor (15) is installed inside the lifting block (8). The output end of the conversion motor (15) is connected to a driving gear (16). The driving gear (16) is in meshing connection with the driven gear (14). The other end of the rotating shaft (13) is connected to a connecting disc (12). A mounting post (17) is fixedly connected to one side wall of the connecting disc (12). A plurality of mounting seats (18) are arranged on the side wall of the mounting post (17). A lamp board (19) is installed on the mounting seats (18).

5. The natural light environment simulation test equipment for indoor field testing according to claim 4, characterized in that: A lamp socket (20) is arranged on the back surface of the lamp board (19). The lamp socket (20) is snap - fitted in the mounting seat (18). An elastic limiting block (1801) is arranged inside the mounting seat (18). The elastic limiting block (1801) abuts against one end of the lamp socket (20).

6. The natural light environment simulation test equipment for indoor field testing according to claim 5, characterized in that: A plug is arranged on the lamp socket (20). A socket is arranged inside the mounting seat (18). The plug is correspondingly inserted into the socket, and a sealing ring is arranged around the plug and the socket.

7. The natural light environment simulation test equipment for indoor field testing according to claim 3 is characterized in that: The cleaning component includes a cleaning cover (21) and a water storage tank (30). An inlet and an outlet are arranged on one side surface of the cleaning cover (21). A water spraying port (24) is opened on one inner wall of the cleaning cover (21). A pump is arranged inside the water storage tank (30). The water outlet of the pump is connected to a water delivery pipe (31). The water delivery pipe (31) is communicated with the water spraying port (24). The pump is used to pump out the cleaning liquid in the water storage tank (30) and spray it out from the water spraying port (24). A cleaning motor (22) is installed on the outer side wall of the cleaning cover (21) and on the same side as the water spraying port (24). The output end of the cleaning motor (22) is connected to a cleaning frame (23). A collecting funnel (25) is connected to the bottom surface of the cleaning cover (21). The bottom end of the collecting funnel (25) is connected to a water purification pipe (26). The water purification pipe (26) is connected to a water return pipe (32). The water return pipe (32) is communicated with the water storage tank (30).

8. The natural light environment simulation test equipment for indoor field testing according to claim 7, characterized in that: A water injection pipe is arranged at the top of the water storage tank (30). The water injection pipe is used to add cleaning liquid to the water storage tank (30). A drain port is arranged on the bottom side wall of the water storage tank (30). The drain port is used to empty the cleaning liquid in the water storage tank (30).

9. The natural light environment simulation test equipment for indoor field testing according to claim 7, characterized in that: A liquid-passing inner tube (27) is arranged in the middle of the clean water pipe (26), a plurality of liquid-passing holes are arranged on the side wall of the liquid-passing inner tube (27), an inner end of the liquid-passing inner tube (27) is fixedly connected to the inner end surface of the clean water pipe (26), and an opening at one end of the return water pipe (32) is connected to the inside of the liquid-passing inner tube (27), a sealing cover (28) is screwed at the opening of the clean water pipe (26), the sealing cover (28) is connected to a filter inner core (29), and the filter inner core (29) is sleeved on the liquid-passing inner tube (27) with its end abutting against the inner end surface of the clean water pipe (26).

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