Safety protection device for SAR antenna

Abstract

The safety protection device comprises a main shell, the main shell comprises a first shell body, a second shell body, a top plate and a lifting body, a bottom plate is fixed to the bottom of the first shell body, a supporting seat is arranged outside the first shell body, a bottom hole is formed in the bottom of the first shell body, an antenna can be conveniently placed, a heater is fixed to the inner side of the first shell body, and the heater is fixed to the outer side of the first shell body. A visual window is formed in the exterior of the first shell, a control panel is installed on the exterior of the first shell, sliding blocks are arranged on the two sides of the interior of the first shell, a first motor is fixed to the inner side of the first shell and connected with a first threaded rod, the first threaded rod is in threaded connection with a lifting body, and a sliding groove is formed in the outer side of the lifting body. A thermostat is fixed to the inner side of the lifting body, a first exhaust hole is formed in the outer side of the lifting body, a ventilation baffle is installed on the outer side of the lifting body, a connecting block is fixed to the inner side of the lifting body, and the device solves the problem of precision errors caused by temperature at present.

Description

Technical Field

[0001] The invention belongs to the technical field of antenna protection devices, and in particular relates to a safety protection device for a SAR antenna. Background Art

[0002] SAR stands for synthetic aperture radar. Synthetic aperture radar uses the principle of synthetic aperture to achieve high-resolution microwave imaging, and has many characteristics such as all-day, all-weather, high resolution, and wide bandwidth. Synthetic aperture radar is divided into two types: focused and non-focused. The former has good azimuth resolution, is independent of target distance, has a large coverage area, and has a fast mapping speed, but the equipment is complex. The azimuth resolution of the latter is proportional to the square root of the wavelength and distance, and the antenna length formed by it has a maximum possible value.

[0003] SAR antennas are large and have a harsh working environment. The size of a SAR antenna is 5 meters by 0.8 meters, and it is directly exposed to outer space, so the temperature fluctuates greatly.

[0004] On the one hand, the SAR system has very stringent requirements on the shape accuracy of the antenna. During the operation, the shape accuracy must be within ±3 mm, which requires that the temperature consistency of the entire array surface is very good. Therefore, a safety protection device for SAR antenna is proposed, which is equipped with a thermostat and other equipment to ensure that the temperature of the antenna is stable during operation to reduce the error caused by temperature fluctuations. Summary of the invention

[0005] The purpose of the present invention is to provide a safety protection device for a SAR antenna to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a safety protection device for a SAR antenna, comprising a main shell, characterized in that: the main shell comprises shell one, shell two, a top plate and a lifting body, a slide groove is arranged on the outside of the lifting body, the motor one and the threaded rod one control the horizontal movement of the lifting body in the slide groove, a thermostat is fixed on the inside of the lifting body, an exhaust hole one is opened on the outside of the lifting body, a ventilation baffle is installed on the outside of the lifting body, and a connecting block is fixed on the inside of the lifting body.

[0007] The present invention further illustrates that a bottom plate is fixed at the bottom of the shell; the support seat is outside the shell, a bottom hole is opened at the bottom of the bottom plate to facilitate the placement of the antenna, a heater is fixed on the inside of the shell, a visual window is opened on the outside of the shell, a control panel is installed on the outside of the shell, sliders are arranged on both sides of the inside of the shell, a motor is fixed on the inside of the shell, the motor is connected to a threaded rod, and the threaded rod is threadedly connected to the lifting body.

[0008] The present invention further illustrates that the lifting body is below shell two, an exhaust hole two is opened on the outer side of shell two, a motor two is fixed inside shell two, motor two is connected to threaded rod two, threaded rod two is connected to the connecting block by a bearing, and threaded rod two and the brush plate are threadedly connected.

[0009] The present invention further describes that the shell 2 is below the top plate, and a lightning rod, a rain sensor and a high temperature alarm are installed on the top of the top plate. The rain sensor and the high temperature alarm are controlled by a control panel through electrical connection.

[0010] The present invention further illustrates that a rain shield is fixed at the lower end of the top plate, the other end of the rain shield is fixed on shell 2, a fan is fixed at the bottom of the top plate, and the thermostat, fan and heater are electrically connected and controlled through a control panel.

[0011] The present invention further illustrates that the safety protection device for SAR antenna includes the following specific operation steps:

[0012] Step 1: Pass the antenna through the bottom plate and the main shell. A lightning rod is installed on the top plate to prevent lightning strikes from damaging the antenna.

[0013] Step 2: Set the set temperature to A through the thermostat on the control panel. When the main housing needs to perform heat dissipation or heating operations at different temperatures, the displacement of the lifting body is adjusted through the motor 1 and the threaded rod 1;

[0014] Step 3: The control panel sets the restoration of the set temperature A inside the main housing. It is generally controlled within 10 seconds. If the set temperature A is not restored within the specified time, the high temperature alarm will light up, indicating that the exhaust hole 1 and the ventilation baffle may be blocked. The control panel issues a command to start the motor 2 and move the brush plate up and down through the threaded rod 2 to clean the exhaust hole 1 and the ventilation baffle to prevent dust or garbage from blocking and causing untimely heat dissipation;

[0015] Step 4: After cleaning, the control panel will measure the heat dissipation time to ensure the efficiency of heat dissipation.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adopts a motor 1 and a threaded rod 1 to enable the lifting body to be lifted to different heights at different temperatures.

[0017] By setting a thermostat, a fan, a heater and a control panel, the heating and cooling of the main housing can be adjusted and controlled through the control panel.

[0018] By setting a brush plate, the dust accumulated in the hole can be cleaned during heat dissipation to prevent the hole from being blocked and affecting the heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a partial schematic diagram of the overall back side of the present invention;

[0022] Figure 3 It is the overall internal schematic diagram of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall internal top view of the present invention;

[0024] Figure 5 It is a schematic left view of the overall interior of the present invention;

[0025] Figure 6 It is a partial enlarged schematic diagram of the region of the present invention;

[0026] In the figure: 1. bottom plate; 2. support seat; 3. shell one; 4. lifting body; 5. shell two; 6. top plate; 7. lightning rod; 8. high temperature alarm; 9. control panel; 10. visual window; 11. exhaust hole one; 12. ventilation baffle; 13. exhaust hole two; 14. rain shield; 15. slide; 16. slider; 17. motor one; 18. threaded rod one; 19. heater; 20. thermostat; 21. fan; 22. connecting block; 23. threaded rod two; 24. motor two; 25. brush plate; 26. main shell; 27. rain sensor. DETAILED DESCRIPTION

[0027] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. 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 Figure 1-6 The present invention provides a technical solution: a safety protection device for a SAR antenna, comprising a main housing 26, the main housing 26 comprising a housing 1 3, a housing 2 5, a top plate 6 and a lifting body 4, a bottom plate 1 is fixed to the bottom of the housing 1 3; a support seat 2 is outside the housing 1 3 to ensure the connection between the housing 1 3 and the bottom plate 1, and a bottom hole is opened at the bottom of the bottom plate 1 to facilitate the placement of the antenna;

[0029] A heater 19 is fixed inside the shell 3, a visual window 10 is provided outside the shell 3, a control panel 9 is installed outside the shell 3, sliders 16 are provided on both sides inside the shell 3, a motor 17 is fixed inside the shell 3, the motor 17 is connected to a threaded rod 18, and the threaded rod 18 is threadedly connected to the lifting body 4;

[0030] A slide groove 15 is arranged on the outside of the lifting body 4, and the lifting body 4 is controlled to move horizontally in the slide groove 15 by a motor 17 and a threaded rod 18. A thermostat 20 is fixed on the inside of the lifting body 4, an exhaust hole 11 is opened on the outside of the lifting body 4, a ventilation baffle 12 is installed on the outside of the lifting body 4, and a connecting block 22 is fixed on the inside of the lifting body 4;

[0031] The lifting body 4 is below the shell 25, and an exhaust hole 213 is opened on the outer side of the shell 25. A motor 24 is fixed inside the shell 25, and the motor 24 is connected to a threaded rod 23. The threaded rod 23 is connected to the connecting block 22 by a bearing, and the threaded rod 23 is connected to the brush plate 25 by a threaded connection.

[0032] Shell 2 5 is below the top plate 6, and a lightning rod 7, a rain sensor 27 and a high temperature alarm 8 are installed on the top of the top plate 6. The rain sensor 27 and the high temperature alarm 8 are controlled by the control panel 9 through electrical connection. A rain shield 14 is fixed to the lower end of the top plate 6, and the other end of the rain shield 14 is fixed to the shell 2 5. A fan 21 is fixed to the bottom of the top plate 6. The thermostat 20, the fan 21 and the heater 19 are electrically connected and controlled by the control panel 9.

[0033] The SAR antenna safety protection device includes the following specific operating steps:

[0034] Step 1: Pass the antenna through the bottom plate 1 and the main housing 26. A lightning rod 7 is installed on the top plate 6 to prevent lightning strikes from damaging the antenna.

[0035] Step 2: The staff sets the set temperature to A through the thermostat 20 via the control panel 9. When the main shell 26 needs to perform heat dissipation or heating operations at different temperatures, the displacement of the lifting body 4 is adjusted through the motor 17 and the threaded rod 18.

[0036] Step 3: The control panel 9 is set to restore the set temperature A inside the main shell 26. Generally, it is controlled within 10 seconds. If the set temperature A is not restored within the specified time, the high temperature alarm 8 will light up, indicating that the exhaust hole 11 and the ventilation baffle 12 may be blocked. The control panel 9 sends a command to start the motor 24 to move the brush plate 25 up and down through the threaded rod 23 to clean the exhaust hole 11 and the ventilation baffle 12 to prevent dust or garbage from blocking and causing untimely heat dissipation.

[0037] Step 4: After the cleaning is completed, the control panel 9 will detect the heat dissipation time by measuring the heat dissipation time to ensure the heat dissipation efficiency.

[0038] Working principle: put the antenna into the main shell 26, the support base 2 is fixed to the outside of the main shell 26 by screws, the thermostat 20, the fan 21 and the heater 19 are electrically connected and controlled by the control panel 9, and the top plate 6 is equipped with a lightning rod 7 to prevent lightning strikes from damaging the antenna. The staff sets the set temperature to A through the thermostat 20 through the control panel 9. When the main shell 26 needs to dissipate heat or heat at different temperatures, the displacement of the lifting body 4 is adjusted through the motor 17 and the threaded rod 18. The control panel 9 can restore the main shell 26 to the set temperature A within a specified time.

[0039] When the temperature is within the set temperature A range, the motor 17 starts to push the lifting body 4 to expose the exhaust hole 11 at one-half through the threaded rod 18, and air exchange and ventilation are carried out through the exhaust hole 11 to ensure normal heat dissipation. The current position is the system default setting. The control panel 9 is set to restore the set temperature A inside the main shell 26, which is generally controlled within 10s. If the set temperature A is not restored within the specified time, the high temperature alarm 8 will light up and return to the control panel 9 through signal transmission. At this time, the heat dissipation work may be affected by dust or blockage in the outer exhaust hole 11. A command is issued through the control panel 9 to start the motor 24 and move the brush plate 25 up and down through the threaded rod 23 to clean the exhaust hole 11 to prevent untimely heat dissipation caused by blockage by dust or garbage.

[0040] When the temperature is lower than the set temperature A, the motor 17 starts to push the lifting body 4 back to the inside of the shell 3 through the threaded rod 18 so that the shell 3 and the shell 2 5 are in clearance, reducing the entry of external cold air into the main shell 26. The control panel 9 sends a signal to the thermostat 20 to start the heater 19 through electrical connection to heat the inside of the main shell 26 until the internal temperature reaches the set temperature A, then the heating is stopped and the motor 17 starts to push the lifting body 4 upward through the threaded rod 18 to restore to the system default setting. The accuracy error caused by temperature changes to the antenna is reduced by heating.

[0041] When the temperature is higher than the set temperature A, the motor 17 starts and pushes the lifting body 4 out of the ventilation baffle 12 through the threaded rod 18 to completely expose the lifting body 4 and the shell 3. The control panel 9 sends a signal to the thermostat 20 to rotate the control fan 21 on the top through the electrical connection to dissipate heat inside the main shell 26. The heat dissipation by controlling the fan 21 reduces the accuracy error caused by temperature changes to the antenna. If the temperature does not reach the set temperature A within 10 seconds, the heat dissipation may be affected by dust or blockage on the outside of the exhaust hole 11 or the ventilation baffle 12. The control panel 9 sends a command to start the motor 24 through the threaded rod 18 to rotate the lifting body 4 and the shell 3. The threaded rod 23 moves the brush plate 25 up and down to clean the exhaust hole 11 and the ventilation baffle 12, and removes the dust accumulated inside the exhaust hole 11 and the ventilation baffle 12. After cleaning, the control panel 9 will detect the heat dissipation time by measuring the heat dissipation time to ensure the efficiency of heat dissipation, and stop heat dissipation when the internal temperature reaches the set temperature A. At the same time, the motor 17 starts to push the lifting body 4 downward to restore to the system default setting through the threaded rod 18. If the set temperature A is reached within 10 seconds, the motor 24 does not work, and the control panel 9 sends a signal to start the motor 17 to push the lifting body 4 downward to restore to the system default setting through the threaded rod 18.

[0042] To prevent water from entering the main shell 26 due to rain and affecting the antenna, when the rain sensor 27 senses rain, the rain sensor 27 will generate an electrical signal by mechanical displacement, and the control panel 9 controls the motor 17 to start by receiving the electrical signal, and pushes the lifting body 4 to be retracted into the shell 3 through the threaded rod 18 so that the shell 3 and the shell 2 5 are gap-matched, and heat and exhaust are carried out through the upper exhaust hole 2 13. The outer rain shield 14 is arranged on the outside of the exhaust hole 2 13 to prevent water from entering the main shell 26 and avoid the influence of high humidity on the antenna accuracy. When the rain sensor 27 no longer transmits an electrical signal, the control panel 9 sends a signal to start the motor 17 to push the lifting body 4 downward through the threaded rod 18 to restore to the system default setting.

[0043] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safety protection device for a SAR antenna, comprising a main housing (26), characterized in that: The main shell (26) comprises a shell 1 (3), a shell 2 (5), a top plate (6) and a lifting body (4); a slide groove (15) is arranged on the outer side of the lifting body (4); a motor 1 (17) and a threaded rod 1 (18) control the lifting body (4) to move horizontally in the slide groove (15); a thermostat (20) is fixed on the inner side of the lifting body (4); an exhaust hole 1 (11) is opened on the outer side of the lifting body (4); a ventilation baffle (12) is installed on the outer side of the lifting body (4); and a connecting block (22) is fixed on the inner side of the lifting body (4).

2. A safety protection device for a SAR antenna according to claim 1, characterized in that: A bottom plate (1) is fixed at the bottom of the shell (3); the support seat (2) is outside the shell (3), and a bottom hole is opened at the bottom of the bottom plate (1) to facilitate the placement of the antenna.

3. A safety protection device for a SAR antenna according to claim 2, characterized in that: A heater (19) is fixed on the inner side of the shell (3), a visual window (10) is provided on the outer side of the shell (3), a control panel (9) is installed on the outer side of the shell (3), sliders (16) are provided on both sides of the inner side of the shell (3), a motor (17) is fixed on the inner side of the shell (3), the motor (17) is connected to a threaded rod (18), and the threaded rod (18) is threadedly connected to the lifting body (4).

4. A safety protection device for a SAR antenna according to claim 3, characterized in that: The lifting body (4) is below the second shell (5), an exhaust hole (13) is provided on the outside of the second shell (5), and a motor (24) is fixed inside the second shell (5).

5. The safety protection device for SAR antenna according to claim 4, characterized in that: The second motor (24) is connected to the second threaded rod (23), the second threaded rod (23) is connected to the connecting block (22) by a bearing, and the second threaded rod (23) is connected to the brush plate (25) by a thread.

6. The safety protection device for a SAR antenna according to claim 5, characterized in that: The second shell (5) is below the top plate (6), and a lightning rod (7), a rain sensor (27) and a high temperature alarm (8) are installed on the top of the top plate (6). The rain sensor (27) and the high temperature alarm (8) are controlled by a control panel (9) through electrical connection.

7. A safety protection device for a SAR antenna according to claim 6, characterized in that: A rain shield (14) is fixed at the lower end of the top plate (6), and the other end of the rain shield (14) is fixed on the second shell (5). A fan (21) is fixed at the bottom of the top plate (6), and the thermostat (20), the fan (21) and the heater (19) are electrically connected and controlled by a control panel (9).

8. The safety protection device for SAR antenna according to claim 7, characterized in that: The SAR antenna safety protection device includes the following specific operating steps: Step 1: The antenna is passed through the bottom plate (1) and the main housing (26), and a lightning rod (7) is installed on the top plate (6) to prevent lightning strikes from causing damage to the antenna; Step 2: Setting the set temperature to A through the thermostat (20) via the control panel (9), and when the main housing (26) needs to perform heat dissipation or heating operations at different temperatures, adjusting the displacement of the lifting body (4) via the motor (17) and the threaded rod (18); Step 3: The control panel (9) sets the restoration time of the set temperature A inside the main housing (26) to be generally controlled within 10 seconds. If the set temperature A is not restored within the specified time, the high temperature alarm (8) will light up, indicating that the exhaust hole 1 (11) and the ventilation baffle (12) may be blocked. The control panel (9) issues a command to start the motor 2 (24) to move the brush plate (25) up and down through the threaded rod 2 (23) to clean the exhaust hole 1 (11) and the ventilation baffle (12) to prevent the heat dissipation from being delayed due to blockage by dust or garbage. Step 4: After the cleaning is completed, the control panel (9) will detect the heat dissipation time by measuring the heat dissipation time to ensure the heat dissipation efficiency.

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