An experimental system for simulating solar radiation

Abstract

This utility model relates to an experimental system for simulating solar radiation, comprising an experimental chamber, a control device, a cooling device, and a simulated experimental light source unit. The simulated experimental light source unit is arranged sequentially on the top of the experimental chamber. Each simulated experimental light source unit includes a light source holder, multiple independently distributed irradiation light sources, and a hoisting mechanism. Infrared displacement sensors and tilt sensors are respectively installed on the light source holder. The irradiation light source adopts a metal halide light source that simulates the spectral characteristics and irradiation intensity of solar radiation. The irradiation light source is connected to a cloud simulation mechanism. The light source holder is installed on the top of the experimental chamber via the hoisting mechanism. Temperature and humidity sensors are installed inside the experimental chamber. The experimental chamber is connected to the control device and the cooling device. Beneficial effects: The irradiation light source is equipped with a cloud simulation mechanism, enabling low irradiance irradiation of 50W / ㎡. It is suitable for simulating the ability of vehicles and large products to withstand the thermal and optical effects of solar radiation, and for evaluating product reliability.

Description

Technical Field

[0001] This invention belongs to the field of environmental testing technology, and in particular relates to an experimental system for simulating solar radiation. Background Technology

[0002] The performance and reliability of large vehicles and large military products under simulated solar radiation are receiving increasing attention. Solar radiation, as a significant factor affecting product performance, can cause damage to the appearance, control systems, and mechanical components of vehicles and products. Existing testing systems often suffer from low simulation accuracy, complex operation, and safety concerns, making them unsuitable for practical applications. Current solar radiation simulation systems struggle to achieve the low-irradiance irradiance requirement of 50W / ㎡.

[0003] There is an urgent need in the field of environmental testing technology to develop a large-scale testing system that can accurately simulate solar radiation. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned technologies and provide an experimental system for simulating solar radiation, which can be used to simulate the ability of vehicles and large military products to withstand the thermal and optical effects of solar radiation, and to evaluate the performance and reliability of products under solar radiation environment.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an experimental system for simulating solar radiation, comprising an experimental chamber, a control device, a cooling device, and a simulated experimental light source unit. The simulated experimental light source unit is arranged sequentially on the top of the experimental chamber. The simulated experimental light source unit includes a light source holder, multiple independently distributed irradiation light sources, and a hoisting mechanism. Infrared displacement sensors and tilt sensors are respectively installed on the light source holder. The irradiation light source adopts a metal halide light source that simulates the spectral characteristics and irradiation intensity of solar radiation. The irradiation light source is connected to a cloud simulation mechanism. The light source holder is installed on the top of the experimental chamber through the hoisting mechanism. Temperature sensors and humidity sensors are provided inside the experimental chamber. The experimental chamber is connected to the control device and the cooling device respectively.

[0006] Furthermore, the test chamber includes a top, left and right bulkheads, front and rear doors, and a bottom. The top is connected by a hoisting mechanism, and a cooling water circulation pipeline is laid inside the left or right bulkhead.

[0007] Furthermore, the light source frame is a truss structure made of aluminum profiles and steel. Universal wheels are fixed to the bottom of the light source frame. Several sets of irradiation light sources are installed on the light source frame. The light source frame is connected to a hoisting mechanism, which includes a support frame composed of beams and columns, electric hoists, and cables. The columns of the support frame penetrate the top and bottom of the cabin and are fixedly connected. Several electric hoists are hung parallel to each other on the beams of the support frame, and the electric hoists are connected to the light source frame via cables. The light source frame is hoisted to the top using electric hoists.

[0008] Furthermore, a fall protection device is provided between the crossbeam of the support frame and the light source lamp holder, and the fall protection device is a steel wire rope with adjustable length.

[0009] Furthermore, an anti-sway mechanism is fixedly connected to the light source lamp holder. The anti-sway mechanism includes a track wheel bracket, a lifting fixed arm, a lifting fixed arm bracket, and track wheels. The anti-sway mechanism moves up and down through the track wheels. After the light source lamp holder is adjusted to the required height position, the four holes on the lifting fixed arm bracket are fixedly connected to the corresponding positions of the light source lamp holder by bolts.

[0010] Furthermore, rotating brackets are fixed to both sides of the irradiation source, and the rotating brackets are fixed to the cloud simulation mechanism. The cloud simulation mechanism uses an electric steering gear to drive the filter screen to block the irradiation source, thereby reducing the irradiation intensity to less than 250w / ㎡.

[0011] Furthermore, the main body of the reflector of the irradiation light source is made of sandblasted anodized aluminum plate. Since the outside of the reflector is equipped with an igniter and a quick-connect interface to meet the high voltage requirements of the lamp tube, the quick-connect interface is quickly connected to the power supply.

[0012] Furthermore, the aluminum plate material of the reflector body of the irradiation light source is a mirror-finish aluminum plate with uniform reflection and no light spots, and its reflectivity is 97%.

[0013] Furthermore, the cooling device includes a cooling tower, a water pump, a water inlet and return circulation pipeline, and a circulating water controller connected in sequence.

[0014] Furthermore, the control device is connected to a temperature sensor, a humidity sensor, an irradiance meter, an infrared displacement sensor, and a tilt sensor, respectively, for controlling and detecting the temperature, humidity, and irradiance intensity inside the test chamber.

[0015] Beneficial effects: Compared with the prior art, this invention allows for adjustment of the light source platform according to the different heights of irregularly shaped products, thus achieving the desired height for such products; the irradiation lamp source is equipped with a cloud simulation mechanism, enabling low-irradiance irradiation of 50W / ㎡. It is suitable for simulating the ability of vehicles and large military products to withstand the thermal and optical effects of solar radiation, and for evaluating the performance and reliability of products under solar radiation environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Schematic diagram of the structure of the light source holder; Figure 3 This is a schematic diagram showing the position of the irradiation source mounted on the light source holder; Figure 4 This is a schematic diagram of the irradiation source structure for installing the cloud simulation mechanism; Figure 5 This is a schematic diagram of the anti-sway mechanism.

[0017] In the diagram: 1. Test chamber; 1-1. Chamber top; 1-2. Left bulkhead; 1-3. Right bulkhead; 1-4. Chamber bottom; 2. Control device; 3. Cooling device; 4. Simulated test light source unit; 4-1. Light source holder; 4-1-1. Casters; 4-2. Irradiation light source; 4-2-1. Rotating bracket; 4-3. Lifting mechanism; 4-3-1. Crossbeam; 4-3-2. Column; 4-3-3. Electric hoist; 4-3-4. Cable; 4-3-5. Fall arrestor; 5. Infrared displacement sensor; 6. Tilt sensor; 7. Cloud simulation mechanism; 8. Temperature sensor; 9. Humidity sensor; 10. Anti-sway mechanism; 10-1. Track wheel bracket; 10-2. Lifting fixed arm; 10-3. Lifting fixed arm bracket; 10-4. Track wheel. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this utility model pertains. The terminology used in this specification of the utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

[0019] In various embodiments of the present utility model, for the purpose of facilitating description rather than limiting the present utility model, the term "connection" used in the specification and claims of the present utility model patent application is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "below", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0020] As shown in the accompanying drawings, the present utility model provides an experimental system for simulating solar radiation, which includes a test chamber 1, a control device 2, a cooling device 3, and a simulated test light source unit 4. The simulated test light source units are arranged in sequence on the top of the test chamber. The simulated test light source unit includes a light source lamp holder 4-1, multiple sets of independently distributed irradiation light sources 4-2, and a hoisting mechanism 4-3. Infrared displacement sensors 5 and inclination sensors 6 are respectively installed on the light source lamp holder and at the same position. The height position of the lamp holder can be adjusted by controlling the electric hoist. The inclination sensor is used to assist in displaying the horizontal angle, and the telescopic amount of each electric hoist is adjusted to make the lamp holder in a balanced position. The irradiation light source uses a metal halide light source that simulates the spectral characteristics and irradiation intensity of solar radiation. The irradiation light source is connected to a cloud simulation mechanism 7. The light source lamp holder is installed on the top of the test chamber through the hoisting mechanism. Temperature sensors 8 and humidity sensors 9 are arranged inside the test chamber. The temperature and humidity sensors are installed at the outlet position of the inner side of the simulation system. The test chamber is respectively connected to the control device and the cooling device. Temperature and humidity sensors are installed inside the test chamber, and the refrigeration system and heating system can be adjusted through the PID parameters in the control cabinet to achieve the purpose of adjusting the temperature and humidity inside the test chamber.

[0021] In a preferred solution of this embodiment, the test chamber includes a chamber top 1-1, left and right chamber walls 1-2, 1-3, front and rear chamber doors (not shown in the figure), and a chamber bottom 1-4. The chamber top penetrates through the hoisting mechanism, and a cooling water circulation pipeline is laid inside the left chamber wall or the right chamber wall to dissipate the heat generated by the high-power operation of the heating unit and the refrigeration unit supporting the test chamber.

[0022] In a preferred embodiment, the light source holder is a truss structure made of aluminum profiles and steel. The bottom of the light source holder is fixed with casters 4-1-1, allowing for easy removal of the test chamber after the holder is lowered to the ground, facilitating maintenance. Several sets of irradiation light sources are installed on the light source holder. The light source holder is connected to a hoisting mechanism, which includes a support frame consisting of a crossbeam 4-3-1 and columns 4-3-2, an electric hoist 4-3-3, and a cable 4-3-4. The columns of the support frame penetrate the top and bottom of the chamber and are fixedly connected. Several electric hoists are hung parallel to each other on the crossbeams of the support frame, and the electric hoists are connected to the light source holder via cables. The number of light source holders can be arranged and adjusted according to the size of the chamber to achieve uniform irradiation height for products of different sizes and some irregularly shaped products.

[0023] In a preferred embodiment, a fall protection device 4-3-5 is provided between the crossbeam of the support frame and the light source lamp holder. The structure used in this embodiment is a steel wire rope device with an adjustable length, in order to prevent the entire frame from falling due to the temporary detachment of the electric hoist's hanging point, which could injure the test piece, people, etc.

[0024] In a preferred embodiment, an anti-sway mechanism 10 is fixedly connected to the light source holder to prevent the holder from swaying due to air circulation inside the chamber, which could affect the test results. The anti-sway mechanism consists of a 10-1 track wheel bracket, a 10-2 lifting and fixing arm, a 10-3 lifting and fixing arm bracket, and a 10-4 track wheel. The anti-sway mechanism can move up and down via the track wheel. After the light source holder (4-1) is adjusted to the required height, it is connected to the corresponding screw holes on the light source holder using bolts through the four holes on the lifting and fixing arm bracket. Each set of light source holders has four fixed positions, which can effectively prevent swaying.

[0025] In a preferred embodiment, rotating brackets 4-2-1 are fixedly connected to both sides of the irradiation source. The rotating brackets are fixedly connected to the cloud simulation mechanism. The cloud simulation mechanism uses an electric steering device to drive the filter screen to block the irradiation source, thereby reducing the irradiation intensity. The irradiation intensity can be less than 250w / ㎡.

[0026] In this preferred embodiment, the reflector body of the irradiation light source is made of sandblasted anodized aluminum plate, which reduces the weight of each sunlight simulation unit while ensuring the strength of the lamp housing. Because the reflector body has an igniter and quick-connect interface on its outer side to meet the high voltage requirements of the lamp tubes, the quick-connect interface allows for quick plug-in connection with the power supply. The integration of the igniter and quick-connect interface on the outer side of the reflector body allows for more effective fulfillment of the high voltage requirements of the lamp tubes, resulting in a more stable and reliable light source that significantly reduces safety risks. The power supply uses a quick-connect interface, allowing for easy disassembly of the lamp assembly.

[0027] In a preferred embodiment, the aluminum plate material of the reflector body of the irradiation light source is a mirror-finish aluminum plate with uniform reflection and no light spots, and its reflectivity is 97%. The rolling and electroplating processes ensure the high strength and hardness of the reflective mirror surface, reducing the possibility of a significant decrease in reflectivity due to subsequent cleaning and wiping.

[0028] In a preferred embodiment, the cooling device includes a cooling tower, a water pump, inlet and outlet water circulation pipes, and a circulating water controller connected in sequence. Conventional techniques will not be described further and are not shown in the figures.

[0029] In a preferred embodiment, the control device is connected to a temperature sensor, a humidity sensor, an irradiance meter, an infrared displacement sensor, and a tilt sensor, respectively, for controlling and detecting the temperature, humidity, and irradiance within the test chamber. This ensures stable test conditions, records test data, and monitors the balance of the light source platform and the raising and lowering of the light source holder. The control system can adjust the height of the light source holder within the test chamber to the required test height and distance from the test product using the infrared displacement sensor, and can adjust the levelness of the holder using the tilt sensor.

[0030] Operation process: Mechanical adjustment of the device: 1) Vertical position adjustment: The distance between the infrared displacement sensor 5 and the ground (or the test piece directly below the lamp holder) can be read on the interface of the control device 2. The distance can be adjusted by adjusting the hoisting mechanism 4-3 through the control device 2 to achieve the required position. The control device 2 can adjust one set of light source lamp holder 4-3-1 individually, or it can adjust multiple sets of light source lamp holders in the test chamber at the same time for lifting and lowering.

[0031] 2) Horizontal position adjustment: The tilt angle parameter of the tilt sensor 6 can be read on the interface of the control device 2. The angles of the X-axis and Y-axis in the horizontal plane can be read at the same time. The light source bracket 4-3-1 can be made to reach the horizontal position by adjusting the hoisting mechanism 4-3.

[0032] 3) Anti-sway design: After the light source lamp holder 4-3-1 reaches the specified height position, the lifting fixed arm bracket 10-3 can be screwed and fixed to the light source lamp holder 4-3-1 to achieve the purpose of anti-sway design.

[0033] Test control: 1) Temperature and humidity control: The output power of the refrigeration system, heating system and humidification system are controlled by PID parameter adjustment through the control device 2 so that the temperature and humidity in the test chamber 1 reach the required control level.

[0034] 2) Irradiance adjustment: When the irradiance is in the range of 250W / ㎡~1120W / ㎡, the intelligent power supply 0-10V analog quantity control is performed by the control device 2 to linearly adjust the output of the light source. When the irradiance is below 250W / ㎡, the electric mechanism opens the cloud simulation mechanism 7 and uses the filter screen to block the light source to reduce the irradiance intensity. This works in conjunction with the intelligent power supply to meet the control requirements of low irradiance intensity.

[0035] The above detailed description of an experimental system for simulating solar radiation, with reference to the embodiments, is illustrative rather than limiting. Several embodiments may be listed within the defined scope. Therefore, variations and modifications that do not depart from the overall concept of this utility model should be within the protection scope of this utility model.

Claims

1. An experimental system for simulating solar radiation, characterized by: The test chamber includes a test chamber, a control device, a cooling device, and a simulated test light source unit. The simulated test light source unit is arranged sequentially on the top of the test chamber. The simulated test light source unit includes a light source holder, multiple independently distributed irradiation light sources, and a hoisting mechanism. Infrared displacement sensors and tilt sensors are installed on the light source holders. The irradiation light sources adopt metal halide light sources that simulate the spectral characteristics and irradiation intensity of solar radiation. The irradiation light sources are connected to a cloud simulation mechanism. The light source holders are installed on the top of the test chamber through the hoisting mechanism. Temperature sensors and humidity sensors are installed inside the test chamber. The test chamber is connected to the control device and the cooling device.

2. The experimental system for simulating solar radiation according to claim 1, characterized in that: The test chamber includes a top, left and right bulkheads, front and rear doors, and a bottom. The top is connected by a hoisting mechanism, and cooling water circulation pipes are laid inside the left or right bulkhead.

3. The experimental system for simulating solar radiation according to claim 1, characterized in that: The light source frame is a truss structure made of aluminum profiles and steel. The bottom of the light source frame is fixed with casters. Several sets of irradiation light sources are installed on the light source frame. The light source frame is connected to the hoisting mechanism. The hoisting mechanism includes a support frame composed of crossbeams and columns, electric hoists, and cables. The columns of the support frame pass through the top of the cabin and are fixed to the bottom of the cabin. Several electric hoists are hung parallel to each other on the crossbeams of the support frame. The electric hoists are connected to the light source frame through cables.

4. The experimental system for simulating solar radiation according to claim 3, characterized in that: A fall protection device is provided between the crossbeam of the support frame and the light source holder, and the fall protection device is a steel wire rope with adjustable length.

5. The experimental system for simulating solar radiation according to claim 1 or 3, characterized in that: An anti-sway mechanism is fixedly connected to the light source lamp holder. The anti-sway mechanism includes a track wheel bracket, a lifting fixed arm, a lifting fixed arm bracket, and track wheels. The anti-sway mechanism moves up and down through the track wheels. After the light source lamp holder is adjusted to the required height position, the four holes on the lifting fixed arm bracket are fixedly connected to the corresponding positions of the light source lamp holder by bolts.

6. The experimental system for simulating solar radiation according to claim 1, characterized in that: Rotating brackets are fixed to both sides of the irradiation source. The rotating brackets are fixed to the cloud simulation mechanism. The cloud simulation mechanism uses an electric steering device to drive the filter screen to block the irradiation source, thereby reducing the irradiation intensity to less than 250w / ㎡.

7. The experimental system for simulating solar radiation according to claim 1 or 6, characterized in that: The main body of the reflector of the irradiation light source is made of sandblasted anodized aluminum plate. The reflector is equipped with an igniter and a quick-connect interface to meet the high voltage requirements of the lamp tube. The quick-connect interface is quickly connected to the power supply.

8. The experimental system for simulating solar radiation according to claim 7, characterized in that: The aluminum plate material of the reflector body of the irradiation light source is a mirror-finish aluminum plate with uniform reflection and no light spots, and its reflectivity is 97%.

9. The experimental system for simulating solar radiation according to claim 1, characterized in that: The cooling device includes a cooling tower, a water pump, inlet and outlet water circulation pipelines, and a circulating water controller connected in sequence.

10. The experimental system for simulating solar radiation according to claim 1, characterized in that: The control device is connected to a temperature sensor, a humidity sensor, an irradiance meter, an infrared displacement sensor, and a tilt sensor, respectively, and is used to control and detect the temperature, humidity, and irradiance intensity inside the test chamber.

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