Electromagnetic compatibility measurement test antenna

Abstract

The invention discloses an electromagnetic compatibility measurement test antenna, which relates to the technical field of electromagnetic compatibility test and comprises a supporting box body, a second iron fixing frame is vertically mounted at the upper end of the supporting box body, and a mounting plate is arranged on one side wall of the second iron fixing frame. A first pneumatic motor is horizontally mounted at the end, away from the second iron fixing frame, of the mounting plate, a T-shaped limiting rod is mounted at the output end of the first pneumatic motor, and an antenna frame is arranged on the side, away from the first pneumatic motor, of the T-shaped limiting rod; the second pneumatic motor and the first pneumatic motor are used as driving sources for lifting and rotating the antenna frame, compared with a traditional motor, interference of the motor and a power line of the motor on electromagnetic measurement can be avoided, the antenna frame can measure electromagnetism in different directions by folding and deforming the antenna frame, the structure is simple, and the cost is low. Coupling interference caused by a complex antenna structure can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic compatibility testing, in particular to an electromagnetic compatibility measurement test antenna. Background Art

[0002] Electromagnetic compatibility testing refers to a test that assesses the electromagnetic compatibility of systems and equipment using electromagnetic interference detection equipment and electromagnetic interference generation equipment under laboratory or field conditions.

[0003] Existing antennas for electromagnetic compatibility testing need to move up and down and rotate horizontally. However, the driving force for these movements is mostly provided by motors. Since the motors and their power lines will interfere with the surrounding electromagnetic fields, the accuracy of the electromagnetic compatibility test will be affected. At the same time, the existing antennas for electromagnetic compatibility testing are relatively complex in structure and are prone to coupling interference.

[0004] Different antenna designs cover different frequency ranges. The standard requirements for signal measurement antennas are: 9kHz-18GHz, and the standard requirements for electromagnetic wave interference antennas are: 10kHz-40GHz. Currently, there is no antenna that can cover this frequency range. When using it, it can only be achieved by replacing antennas with different frequencies, which is very inconvenient.

[0005] In view of the above problems, an improved electromagnetic compatibility measurement test antenna is designed. Summary of the Invention

[0006] The object of the present invention is to provide an electromagnetic compatibility measurement test antenna to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: An electromagnetic compatibility measurement test antenna includes a supporting box body, a second iron fixing frame is vertically installed on the upper end of the supporting box body, a second slide groove is vertically opened on one side wall of the second iron fixing frame, a mounting plate is provided on the side wall of the second iron fixing frame where the second slide groove is located, a moving mechanism for moving the mounting plate up and down is provided inside the second iron fixing frame, a first pneumatic motor is horizontally installed on the end of the mounting plate away from the second iron fixing frame, a first air duct is installed on both the air input end and the output end of the first air duct, a first air supply connector connected to an external conveying device is installed on the end of the first air duct away from the first air motor through the supporting box body, and the first air supply connector is installed on the side wall of the supporting box body. On the output end of the first pneumatic motor is installed with a T-shaped limit rod, and a feeder collection box is provided at the center position of the T-shaped limit rod away from the first pneumatic motor. A horn antenna is installed at the end of the feeder collection box away from the T-shaped limit rod, and antenna stands are rotatably connected to the two opposite side walls of the feeder collection box. The two antenna stands are symmetrically arranged, and a feeder is installed at the upper end of the feeder collection box. The end of the feeder away from the feeder collection box is passed through the support box and a feeder connector connected to an external receiving device is installed. The feeder connector is installed on the side wall of the support box. A switching mechanism for changing the measuring direction of the antenna mount is provided on the T-shaped limit rod, and a storage mechanism for storing the feeder and the first air duct is provided at the upper end of the support box.

[0008] As a further solution of the present invention: the moving mechanism includes a rotating rod, which is rotatably connected to the top of the second iron fixed frame, and the lower end of the rotating rod passes through the supporting box and is installed with a second pneumatic motor for driving the rotating rod to rotate, the second pneumatic motor is installed at the bottom of the supporting box, and the air input and output ends of the second pneumatic motor are both installed with a second air duct, and the end of the second air duct away from the second pneumatic motor is installed with a second air supply connector connected to an external air supply device, the second air supply connector is installed on the side wall of the support box, and a reciprocating screw is installed on the side wall of the rotating rod inside the second iron fixed frame, and the side wall of the reciprocating screw is rotatably connected to a moving block by a thread, and the moving block moves along the inner wall of the second iron fixed frame, and the mounting plate and the moving block are connected by a connecting block, and the connecting block is slidably connected to the inner wall of the second slide groove.

[0009] As a further solution of the present invention: balls are installed on the side walls of the moving block to facilitate the moving block to move along the inner wall of the second iron fixed frame.

[0010] As a further solution of the present invention: the switching mechanism includes a limit rod, which is horizontally installed at the center position of the T-shaped limit rod away from the first pneumatic motor. The feeder collection box is slidably sleeved on the side wall of the limit rod. The end of the antenna rack away from the feeder collection box is rotatably connected to a sliding frame. The sliding frame is slidably sleeved on the side wall of the T-shaped limit rod. The side wall of the sliding frame is provided with fastening bolts for fixing the sliding frame on the T-shaped limit rod.

[0011] As a further solution of the present invention: a handle is installed on the feeder collection box to facilitate staff to move the feeder collection box.

[0012] As a further solution of the present invention: the storage mechanism includes a first iron fixed frame, the first iron fixed frame is vertically installed on the upper end of the support box on the side of the first pneumatic motor away from the T-shaped limit rod, and the first iron fixed frame is vertically provided with a plurality of first sliding grooves on the side wall close to the first pneumatic motor, a first elastic telescopic rod is vertically installed on the upper end of the support box inside the first iron fixed frame, a first guide block is installed on the output end of the first elastic telescopic rod, a second elastic telescopic rod is vertically installed at the center position of the upper end of the first guide block, and a second guide block is installed on the output end of the second elastic telescopic rod, the feeder sleeve between the support box and the feeder collection box is at the upper end of the second guide block and passes through the first sliding groove, the first air guide pipe sleeve between the support box and the first pneumatic motor is on the upper end of the first guide blocks on both sides of the second elastic telescopic rod and passes through the first sliding groove.

[0013] As a further solution of the present invention: a universal wheel with a brake is installed at the lower end of the support box to facilitate the movement of the support box.

[0014] As a further solution of the present invention: the first pneumatic motor is detachably mounted on the mounting plate by bolts.

[0015] As a further solution of the present invention: a triangular rib for supporting the T-shaped limit rod is installed on the side wall of the output shaft of the first pneumatic motor, and one end of the triangular rib close to the T-shaped limit rod is installed on the T-shaped limit rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses the second pneumatic motor and the first pneumatic motor as driving sources for lifting and rotating the antenna stand. Compared with traditional motors, the present invention can avoid interference of the motor and its power line on electromagnetic measurement and improve the accuracy of electromagnetic measurement.

[0017] The present invention enables the antenna frame to measure electromagnetic radiation in different directions by folding and deforming the antenna frame. The structure is simple, coupling interference caused by a complex antenna structure can be avoided, and the accuracy of electromagnetic measurement is improved.

[0018] The horn antenna can make the detection frequency reach 18GHz. At the same time, combined with the folded and deformed antenna, it can measure signals in the frequency range of 9kHz-18GHz, thereby increasing the applicability of the antenna.

[0019] The present invention stores the first air duct and the feeder through the first guide block on the first elastic telescopic rod and the second guide block on the second elastic telescopic rod, which facilitates the orderly placement of the wires and pipelines. At the same time, the feeder is arranged inside the first iron fixed frame, which can perform electromagnetic shielding on the feeder, making it easy for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure when the horn antenna is installed in the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the present invention when the horn antenna is not installed.

[0022] Figure 3 It is a structural schematic diagram of the storage mechanism in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the moving mechanism in the present invention.

[0024] Figure 5 Schematic diagram of the structure of the switching mechanism in the present invention.

[0025] Among them: 1. Support box; 2. Second air supply connector; 3. First air supply connector; 4. First elastic telescopic rod; 5. First slide; 6. First iron fixed frame; 7. First pneumatic motor; 8. First guide block; 9. Second elastic telescopic rod; 10. Second guide block; 11. Second iron fixed frame; 12. Second slide; 13. Feeder; 14. First air duct; 15. Antenna stand; 16. Limit rod; 17. T-shaped limit rod; 18. Rotating rod; 19. Second pneumatic motor; 20. Second air duct; 21. Feeder connector; 22. Feeder collection box; 23. Mounting plate; 24. Reciprocating screw; 25. Moving block; 26. Sliding frame; 27. Fastening bolt; 28. Horn antenna. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with 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 making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5In an embodiment of the present invention, an electromagnetic compatibility measurement test antenna includes a support box 1, a second iron fixing frame 11 is vertically installed on the upper end of the support box 1, a second slide groove 12 is vertically opened on one of the side walls of the second iron fixing frame 11, a mounting plate 23 is provided on the side wall of the second iron fixing frame 11 where the second slide groove 12 is located, and a moving mechanism for moving the mounting plate 23 up and down is provided inside the second iron fixing frame 11, a first pneumatic motor 7 is horizontally installed at one end of the mounting plate 23 away from the second iron fixing frame 11, and a first air duct 14 is installed at both the air input and output ends of the first air duct 14, and a first air supply connector 3 connected to an external conveying device is installed at the end of the first air duct 14 away from the first air motor 7 through the support box 1, and the first air supply connector 3 is installed on the side wall of the support box 1 A T-shaped limit rod 17 is installed at the output end of the first pneumatic motor 7, and a feeder collection box 22 is provided at the center position of the T-shaped limit rod 17 away from the first pneumatic motor 7. A horn antenna 28 is installed at the end of the feeder collection box 22 away from the T-shaped limit rod 17. Antenna racks 15 are rotatably connected to the two opposite side walls of the feeder collection box 22. The two antenna racks 15 are symmetrically arranged. A feeder 13 is installed at the upper end of the feeder collection box 22. The end of the feeder 13 away from the feeder collection box 22 passes through the support box 1 and is equipped with a feeder connector 21 connected to an external receiving device. The feeder connector 21 is installed on the side wall of the support box 1. A switching mechanism for changing the measuring direction of the antenna rack 15 is provided on the T-shaped limit rod 17, and a storage mechanism for storing the feeder 13 and the first air duct 14 is provided at the upper end of the support box 1.

[0028] The moving mechanism includes a rotating rod 18, which is rotatably connected to the top of the second iron fixed frame 11. The lower end of the rotating rod 18 passes through the support box 1 and is equipped with a second pneumatic motor 19 for driving the rotating rod 18 to rotate. The second pneumatic motor 19 is installed at the bottom of the support box 1. The air input and output ends of the second pneumatic motor 19 are both equipped with second air ducts 20. The end of the second air duct 20 away from the second pneumatic motor 19 is equipped with a second air supply connector 2 connected to an external air supply device. The second air supply connector 2 is installed on the side wall of the support box 1. A reciprocating screw 24 is installed on the side wall of the rotating rod 18 inside the second iron fixed frame 11. The side wall of the reciprocating screw 24 is rotatably connected to a moving block 25 through a thread. The moving block 25 moves along the inner wall of the second iron fixed frame 11. The mounting plate 23 and the moving block 25 are connected by a connecting block, and the connecting block is slidably connected to the inner wall of the second slide groove 12.

[0029] When in use, start the second pneumatic motor 19, the output end of the second pneumatic motor 19 drives the rotating rod 18 to rotate, the rotating rod 18 drives the reciprocating screw 24 to rotate, under the action of the thread, the reciprocating screw 24 drives the moving block 25 to move, and the moving block 25 drives the mounting plate 23 to move.

[0030] The switching mechanism includes a limit rod 16, which is horizontally installed at the center position of the T-shaped limit rod 17 on the side away from the first pneumatic motor 7. The feeder collection box 22 is slidably sleeved on the side wall of the limit rod 16. The end of the antenna rack 15 away from the feeder collection box 22 is rotatably connected to a sliding frame 26. The sliding frame 26 is slidably sleeved on the side wall of the T-shaped limit rod 17. The side wall of the sliding frame 26 is provided with a fastening bolt 27 for fixing the sliding frame 26 on the T-shaped limit rod 17.

[0031] When switching the measurement direction, the staff moves the feeder collection box 22, the feeder collection box 22 drives the antenna rack 15 to swing, and the antenna rack 15 drives the sliding frame 26 to move along the side wall of the T-shaped limit rod 17. After the switching is completed, the sliding frame 26 is fixed to the T-shaped limit rod 17 by tightening the bolts 27.

[0032] The storage mechanism includes a first iron fixed frame 6, which is vertically installed on the upper end of the support box 1 on the side of the first pneumatic motor 7 away from the T-shaped limit rod 17. A number of first slide grooves 5 are vertically opened on the side wall of the first iron fixed frame 6 close to the first pneumatic motor 7. A first elastic telescopic rod 4 is vertically installed on the upper end of the support box 1 inside the first iron fixed frame 6, and a first guide block 8 is installed on the output end of the first elastic telescopic rod 4. A second elastic telescopic rod 9 is vertically installed at the center position of the upper end of the first guide block 8, and a second guide block 10 is installed on the output end of the second elastic telescopic rod 9. The feeder 13 between the support box 1 and the feeder collection box 22 is sleeved on the upper end of the second guide block 10 and passes through the first slide groove 5. The first air duct 14 between the support box 1 and the first pneumatic motor 7 is sleeved on the upper ends of the first guide blocks 8 on both sides of the second elastic telescopic rod 9 and passes through the first slide groove 5.

[0033] When the first pneumatic motor 7 and the feeder collection box 22 move upward, the feeder 13 and the first air duct 14 can be stored in the first iron fixing frame 6 under the action of the elastic force of the first elastic telescopic rod 4 and the second elastic telescopic rod 9.

[0034] Working principle of an electromagnetic compatibility measurement test antenna: When in use, start the second pneumatic motor 19, the output end of the second pneumatic motor 19 drives the rotating rod 18 to rotate, the rotating rod 18 drives the reciprocating screw 24 to rotate, under the action of the thread, the reciprocating screw 24 drives the moving block 25 to move, the moving block 25 drives the mounting plate 23 to move, the mounting plate 23 drives the first pneumatic motor 7 to move, the first pneumatic motor 7 drives the T-shaped limit rod 17 to move, the T-shaped limit rod 17 drives the sliding frame 26 and the limit rod 16 to move, the sliding frame 26 and the limit rod 16 drive the antenna rack 15 and the feeder collection box 22 to move, and at the same time start the first pneumatic motor 7, the output end of the first pneumatic motor 7 drives the T-shaped limit rod 17 to rotate, the T-shaped limit rod 17 drives the sliding frame 26 to rotate, the sliding frame 26 drives the antenna rack 15 and the feeder collection box 22 to rotate, so that the antenna rack 15 measures electromagnetic quantities.

[0035] When the first pneumatic motor 7 and the feeder collection box 22 move upward, under the action of the elastic force of the first elastic telescopic rod 4 and the second elastic telescopic rod 9, the feeder 13 and the first air duct 14 can be stored in the first iron fixed frame 6. When the first pneumatic motor 7 and the feeder collection box 22 move downward, under the action of the elastic force of the first elastic telescopic rod 4 and the second elastic telescopic rod 9, the feeder 13 and the first air duct 14 can be released from the first iron fixed frame 6.

[0036] When switching the measurement direction, the staff moves the feeder collection box 22, the feeder collection box 22 drives the antenna rack 15 to swing, and the antenna rack 15 drives the sliding frame 26 to move along the side wall of the T-shaped limit rod 17. After the switching is completed, the sliding frame 26 is fixed to the T-shaped limit rod 17 by tightening the bolts 27.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. An electromagnetic compatibility measurement test antenna, comprising a supporting box (1), a second iron fixing frame (11) being vertically mounted on the upper end of the supporting box (1), a second slide groove (12) being vertically opened on one of the side walls of the second iron fixing frame (11), and a mounting plate (23) being arranged on the side wall of the second iron fixing frame (11) where the second slide groove (12) is located, characterized in that: A moving mechanism for moving the mounting plate (23) up and down is arranged inside the second iron fixing frame (11); a first pneumatic motor (7) is horizontally mounted on one end of the mounting plate (23) away from the second iron fixing frame (11); first air guide pipes (14) are mounted on both the air input end and the air output end of the first pneumatic motor (7); the end of the first air guide pipe (14) away from the first pneumatic motor (7) passes through the support box (1) and is mounted with a first air supply connector (3) connected to an external conveying device; the first air supply connector (3) is mounted on a side wall of the support box (1); a T-shaped limit rod (17) is mounted on the output end of the first pneumatic motor (7); a feeder collection box (22) is arranged at the center of the T-shaped limit rod (17) away from the first pneumatic motor (7). ), a horn antenna (28) is installed at one end of the feeder collection box (22) away from the T-shaped limit rod (17), antenna racks (15) are rotatably connected to two opposite side walls of the feeder collection box (22), and the two antenna racks (15) are symmetrically arranged. A feeder (13) is installed at the upper end of the feeder collection box (22), and one end of the feeder (13) away from the feeder collection box (22) passes through the support box (1) and is installed with a feeder connector (21) connected to an external receiving device, and the feeder connector (21) is installed on the side wall of the support box (1). A switching mechanism for changing the measurement direction of the antenna rack (15) is provided on the T-shaped limit rod (17), and a storage mechanism for storing the feeder (13) and the first air guide tube (14) is provided at the upper end of the support box (1).

2. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: The moving mechanism comprises a rotating rod (18), the rotating rod (18) being rotatably connected to the top of the second iron fixed frame (11), the lower end of the rotating rod (18) passing through the supporting box (1) being equipped with a second pneumatic motor (19) for driving the rotating rod (18) to rotate, the second pneumatic motor (19) being installed at the bottom of the supporting box (1), the air input end and the air output end of the second pneumatic motor (19) being both equipped with a second air guide tube (20), and the end of the second air guide tube (20) away from the second pneumatic motor (19) being equipped with a second air guide tube (20) connected to an external air input. A second gas supply connector (2) connected to a gas device, the second gas supply connector (2) being mounted on a side wall of a supporting box (1), a reciprocating screw (24) being mounted on a side wall of a rotating rod (18) inside the second iron fixed frame (11), a moving block (25) being rotatably connected to the side wall of the reciprocating screw (24) through a thread, the moving block (25) moving along the inner wall of the second iron fixed frame (11), the mounting plate (23) and the moving block (25) being connected through a connecting block, and the connecting block being slidably connected to the inner wall of the second slide groove (12).

3. The electromagnetic compatibility measurement test antenna according to claim 2, characterized in that: Ball bearings are mounted on the side walls of the moving block (25) to facilitate the moving block (25) to move along the inner wall of the second iron fixed frame (11).

4. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: The switching mechanism comprises a limit rod (16), wherein the limit rod (16) is horizontally mounted at a central position of a side of a T-shaped limit rod (17) away from the first pneumatic motor (7), the feeder collection box (22) is slidably sleeved on a side wall of the limit rod (16), and an end of the antenna frame (15) away from the feeder collection box (22) is rotatably connected to a sliding frame (26), wherein the sliding frame (26) is slidably sleeved on the side wall of the T-shaped limit rod (17), and a fastening bolt (27) for fixing the sliding frame (26) on the T-shaped limit rod (17) is arranged on the side wall of the sliding frame (26).

5. The electromagnetic compatibility measurement test antenna according to claim 4, characterized in that: The feeder collection box (22) is provided with a handle for facilitating a worker to move the feeder collection box (22).

6. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: The storage mechanism comprises a first iron fixed frame (6), the first iron fixed frame (6) being vertically mounted on the upper end of the support box (1) on the side of the first pneumatic motor (7) away from the T-shaped limit rod (17), a plurality of first sliding grooves (5) being vertically opened on the side wall of the first iron fixed frame (6) close to the first pneumatic motor (7), a first elastic telescopic rod (4) being vertically mounted on the upper end of the support box (1) inside the first iron fixed frame (6), and a first guide block (8) being mounted on the output end of the first elastic telescopic rod (4), A second elastic telescopic rod (9) is vertically mounted at the center of the upper end of the first guide block (8); a second guide block (10) is mounted at the output end of the second elastic telescopic rod (9); a feeder (13) between the support box (1) and the feeder collection box (22) is sleeved on the upper end of the second guide block (10) and passes through the first slide groove (5); and a first air guide pipe (14) between the support box (1) and the first pneumatic motor (7) is sleeved on the upper ends of the first guide blocks (8) on both sides of the second elastic telescopic rod (9) and passes through the first slide groove (5).

7. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: The lower end of the support box (1) is provided with a universal wheel with a brake to facilitate the movement of the support box (1).

8. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: The first pneumatic motor (7) is detachably mounted on the mounting plate (23) by means of bolts.

9. The electromagnetic compatibility measurement test antenna according to claim 1, characterized in that: A triangular rib plate for supporting the T-shaped limit rod (17) is mounted on the side wall of the output shaft of the first pneumatic motor (7); one end of the triangular rib plate close to the T-shaped limit rod (17) is mounted on the T-shaped limit rod (17).

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