Electromagnetic darkroom detection equipment with avoidance function

Abstract

The utility model discloses electromagnetic darkroom detection equipment with an avoidance function, which relates to the technical field of electromagnetic detection equipment and comprises an electromagnetic darkroom wall, fixed wave-absorbing wedges are fixedly mounted at the front, rear, left and right tops of the inner wall of the electromagnetic darkroom wall, and a floor absorption mechanism is arranged at the bottom of the inner wall of the electromagnetic darkroom wall. According to the utility model, the movable wave-absorbing wedge base, the fixed wave-absorbing wedge base, the spring, the embedded infrared transmitter, the embedded infrared receiver, the embedded electromagnet, the movable bearing support plate and the separation blade are matched with one another, so that when the bearing support plate moves towards the rear side of the floor, the embedded infrared transmitter and the embedded electromagnet can be separated from one another; the movable wave-absorbing wedge bases passing through the route can automatically avoid, and after the bearing support plate leaves, the movable wave-absorbing wedge bases and the fixed wave-absorbing wedge bases are adsorbed, fixed and sealed again, so that the wave-absorbing material in the darkroom can be fully covered while the bearing support plate moves by utilizing the automatic avoiding function, and manpower is saved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic detection equipment technology, specifically to an electromagnetic anechoic chamber detection device with an obstacle avoidance function. Background Technology

[0002] Electronic engineers use anechoic chambers for electromagnetic compatibility (EMC) or electromagnetic interference (EMI) and radio frequency (RF) testing. These chambers have several absorbing wedges installed on their inner walls to absorb electromagnetic waves, primarily replacing open test areas free from electromagnetic interference. There are various types of anechoic chambers, and their size and configuration are selected based on factors such as the type of test, the size of the object under test, and budget. For fully anechoic chambers, absorbing materials need to be laid on all six surfaces (floor, ceiling, and four walls). The arrangement of the absorbing materials on the ceiling and walls is relatively fixed, but their positions need to be adjusted during electromagnetic performance testing. However, both the absorbing materials on the chamber floor and the arrangement of the testing equipment require repeated adjustments. To facilitate the movement and positioning of the testing equipment, it is often necessary to lay tracks on the chamber floor, allowing the mobile frame to slide along these tracks and carry the testing equipment. The existing technology has the following problems:

[0003] Because the existing mobile frame carrying the test equipment lacks the ability to avoid obstacles when moving, the absorbing wedges on the ground need to be removed first. After the mobile frame is adjusted to the correct position, the absorbing material needs to be manually put back in place to ensure that the absorbing material in the anechoic chamber can be fully covered during the electromagnetic wave performance test. This seriously affects the adjustment efficiency of the mobile frame carrying the test equipment and is labor-intensive. Utility Model Content

[0004] This invention provides an electromagnetic anechoic chamber detection device with an obstacle avoidance function to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An electromagnetic anechoic chamber testing device with obstacle avoidance function includes an electromagnetic anechoic chamber wall. Fixed absorbing wedges are fixedly installed on the inner wall of the electromagnetic anechoic chamber wall at the front, back, left, right, and top. A floor absorption mechanism is provided at the bottom of the inner wall of the electromagnetic anechoic chamber wall. The floor absorption mechanism includes a floor. Several ground absorbing wedge mechanisms are fixedly installed in a rectangular array on the top of the floor. A drive chamber is provided in the floor. A motor is fixedly installed on the front side of the inner wall of the drive chamber. A threaded long rod is fixedly installed on the output shaft of the motor. A movable upright plate is threaded onto the outer wall of the threaded long rod. A groove extending through to the inner cavity of the drive chamber is provided on the top right side of the floor. A movable frame support mechanism is provided on the top of the movable upright plate, extending through the groove to the top of the floor.

[0007] A further improvement of this utility model is that a limiting rod is fixedly installed between the front and rear sides of the inner wall of the drive cabin, and the limiting rod is slidably connected to the movable upright plate.

[0008] A further improvement of this utility model's technical solution lies in the following: the ground-based wave-absorbing wedge mechanism includes several movable wave-absorbing wedge bases arranged in a front-to-back pattern and several fixed wave-absorbing wedge bases arranged in a rectangular array. The movable wave-absorbing wedge bases are all located on the top right side of the floor, and the fixed wave-absorbing wedge bases are located on the left side of the movable wave-absorbing wedge bases. Hanging rods are fixedly installed on both the front and rear sides of the bottom of the movable wave-absorbing wedge bases. The bottom end of each hanging rod extends through the inner cavity of the drive compartment. Several hanging rod slots are opened on the top right side of the inner cavity of the drive compartment, extending to the top of the floor. The hanging rods are slidably connected to the hanging rod slots. A connecting plate is fixedly installed between the opposing surfaces of two hanging rods. A spring is fixedly installed on the left side of the connecting plate, and a fixed hanging plate is fixedly installed on the left side of the spring. The fixed hanging plate is fixedly installed on the top of the inner wall of the drive compartment.

[0009] A further improvement of this utility model is that: an embedded infrared transmitter is fixedly installed on the front left side of the movable absorbing wedge base, and an embedded infrared receiver is fixedly installed on the front right side of the fixed absorbing wedge base. The embedded infrared transmitter and the embedded infrared receiver are on the same horizontal line. An embedded electromagnet is fixedly installed at the center of the opposite surface of the movable absorbing wedge base and the fixed absorbing wedge base. When the infrared rays emitted by the embedded infrared transmitter are received by the embedded infrared receiver, the embedded electromagnet is energized.

[0010] A further improvement of the present invention is that: the mobile frame bearing mechanism includes a bearing support plate, the bottom end of the bearing support plate is fixedly connected to the top of the mobile upright plate, the bearing support plate is slidably connected to the sliding groove, a baffle is fixedly installed on the left side of the front end of the bearing support plate, a slot is opened on the top of the bearing support plate, a placement plate is fixedly installed on the top of the bearing support plate, a drive box is fixedly installed on the bottom of the placement plate, and the drive box is engaged with the slot.

[0011] A further improvement of this utility model is that: a positive and negative threaded rod is movably installed on the right side of the inner wall of the drive box; the left end of the positive and negative threaded rod extends through to the left side of the drive box and is fixedly installed with a rotating handle; the outer walls of the positive and negative threaded rods have oppositely threaded walls on their left and right sides; a moving rod is threadedly installed on the outer walls of both threaded walls; a second moving groove penetrating the inner cavity is opened at the top of the drive box; a first moving groove penetrating vertically is opened on the placement plate; the first moving groove and the second moving groove are interconnected; the top ends of the two moving rods extend through the second moving groove and the first moving groove to the top of the placement plate and are respectively fixedly installed with clamping plates.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides an electromagnetic anechoic chamber testing device with a collision avoidance function. Through the cooperation of the movable absorbing wedge base, the fixed absorbing wedge base, the spring, the embedded infrared transmitter, the embedded infrared receiver, the embedded electromagnet, the movable support plate, and the baffle, the movable absorbing wedge base can automatically avoid the support plate when it moves towards the rear of the floor. At the same time, after the support plate leaves, it will re-attach and seal with the fixed absorbing wedge base. Thus, the automatic collision avoidance function ensures that the absorbing material in the anechoic chamber is fully covered while the support plate moves, and saves manpower.

[0014] 2. This utility model provides an electromagnetic anechoic chamber testing device with a collision avoidance function. Through the cooperation between the placement plate, drive box, rotating handle and clamping plate, the device placed on the movable placement plate can maintain stability when moving, and can clamp and fix devices of different sizes, thus improving the applicability of clamping and fixing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the floor absorption mechanism of the present invention.

[0017] Figure 3 This is a schematic diagram of the ground-based wave-absorbing wedge mechanism of this utility model.

[0018] Figure 4 This is a schematic diagram of the mobile frame support mechanism of this utility model.

[0019] Figure 5 This is a cross-sectional schematic diagram of the drive box structure of this utility model.

[0020] In the diagram: 1. Electromagnetic anechoic chamber wall; 2. Fixed absorbing wedge; 3. Floor absorbing mechanism; 31. Floor; 32. Ground absorbing wedge mechanism; 321. Movable absorbing wedge base; 322. Fixed absorbing wedge base; 323. Hanging rod; 324. Connecting plate; 325. Spring; 326. Fixed hanging plate; 327. Embedded infrared transmitter; 328. Embedded infrared receiver; 329. Embedded electromagnet; 33. Drive 34. Motor; 35. Threaded rod; 36. Movable upright plate; 37. Slide groove; 38. Movable frame support mechanism; 381. Support plate; 382. Baffle; 383. Placement plate; 3831. Movable slot one; 384. Drive box; 3841. Positive and negative threaded rod; 3842. Rotary handle; 3843. Movable slot two; 3844. Movable rod; 3845. Clamping plate; 385. Slot; 39. Limiting rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 As shown, this utility model provides an electromagnetic anechoic chamber detection device with a clearance function, including an electromagnetic anechoic chamber wall 1. Fixed absorbing wedges 2 are fixedly installed on the front, back, left, right and top of the inner wall of the electromagnetic anechoic chamber wall 1. A floor absorption mechanism 3 is provided at the bottom of the inner wall of the electromagnetic anechoic chamber wall 1. The floor absorption mechanism 3 includes a floor 31. Several ground absorbing wedge mechanisms 32 are fixedly installed in a rectangular array on the top of the floor 31. A drive chamber 33 is opened on the floor 31. A motor 34 is fixedly installed on the front side of the inner wall of the drive chamber 33. A threaded long rod 35 is fixedly installed on the output shaft of the motor 34. A movable upright plate 36 is threadedly installed on the outer wall of the threaded long rod 35. A sliding groove 37 is opened on the top right side of the floor 31, which extends into the inner cavity of the drive chamber 33. A movable frame support mechanism 38 is provided on the top of the movable upright plate 36. The movable frame support mechanism 38 extends through the sliding groove 37 to the top of the floor 31. A limit rod 39 is fixedly installed between the front and back sides of the inner wall of the drive chamber 33. The limit rod 39 is slidably connected to the movable upright plate 36.

[0023] When the overall position of the mobile frame support mechanism 38 needs to be adjusted, the motor 34 in the drive compartment 33 is started to drive the threaded rod 35 to rotate. With the threaded connection between the mobile upright plate 36 and the threaded rod 35, the mobile frame support mechanism 38 at the top can be moved by the slide groove 37. While moving, the mobile upright plate 36 slides on the outer wall of the limit rod 39 to maintain the stability of the movement.

[0024] like Figure 3As shown, the ground-based wave-absorbing wedge mechanism 32 includes several movable wave-absorbing wedge bases 321 arranged in a front-to-back pattern and several fixed wave-absorbing wedge bases 322 arranged in a rectangular array. The movable wave-absorbing wedge bases 321 are all located on the top right side of the floor 31, and the fixed wave-absorbing wedge bases 322 are located to the left of the movable wave-absorbing wedge bases 321. Hanging rods 323 are fixedly installed on both the front and rear sides of the bottom of the movable wave-absorbing wedge bases 321. The bottom end of the hanging rods 323 extends into the inner cavity of the drive compartment 33. Several hanging rod slots are opened on the top right side of the inner cavity of the drive compartment 33, extending to the top of the floor 31. The hanging rods 323 are slidably connected to the hanging rod slots. A connecting plate 324 is fixedly installed between the opposite faces of two hanging rods 323. A spring 325 is fixedly installed on the left side of the drive compartment 322. A fixed hanging plate 326 is fixedly installed on the left side of the spring 325. The fixed hanging plate 326 is fixedly installed on the top of the inner wall of the drive compartment 33. An embedded infrared emitter 327 is fixedly installed on the front left side of the movable wave-absorbing wedge base 321. An embedded infrared receiver 328 is fixedly installed on the front right side of the fixed wave-absorbing wedge base 322. The embedded infrared emitter 327 and the embedded infrared receiver 328 are on the same horizontal line. An embedded electromagnet 329 is fixedly installed at the center of the opposite surface of the movable wave-absorbing wedge base 321 and the fixed wave-absorbing wedge base 322. When the infrared rays emitted by the embedded infrared emitter 327 are received by the embedded infrared receiver 328, the embedded electromagnet 329 is energized.

[0025] In the initial state, the infrared rays emitted by the embedded infrared emitter 327 are received by the embedded infrared receiver 328, which powers the embedded electromagnet 329, allowing the movable absorbing wedge base 321 and the fixed absorbing wedge base 322 at the top right of the floor 31 to attract and merge with each other. Simultaneously, the spring 325 on the left side of the connecting plate 324 between the opposite surfaces of the hanger 323 is compressed towards the fixed hanger plate 326. When the supporting plate 381 moves towards the rear of the floor 31 under the drive of the movable upright plate 36, a one-millimeter-thick solid opaque baffle 382 inserts into the gap between the movable absorbing wedge base 321 and the fixed absorbing wedge base 322, thus preventing the infrared rays emitted by the embedded infrared emitter 327 from being received by the embedded infrared receiver 328. This causes the embedded electromagnet 329 to lose its magnetism when de-energized, preventing it from attracting anything. The movable wave-absorbing wedge base 321 on the rear side of the support plate 381 can then separate from the fixed wave-absorbing wedge base 322 under the action of the spring 325 pressing the connecting plate 324. This allows the support plate 381 to smoothly move backward through the slide groove 37. When it is completely moved between the fixed wave-absorbing wedge base 322 and the movable wave-absorbing wedge base 321 at the rear position, the infrared rays emitted by the embedded infrared emitter 327 between the movable wave-absorbing wedge base 321 and the fixed wave-absorbing wedge base 322 on the front side will be re-received by the embedded infrared receiver 328, energizing the embedded electromagnet 329. This causes the movable wave-absorbing wedge base 321, which the support plate 381 has completely passed through, to re-adhere and seal with the right side of the fixed wave-absorbing wedge base 322. This process is repeated to avoid the support plate 381.

[0026] like Figure 4 , Figure 5As shown, the movable frame support mechanism 38 includes a support plate 381. The bottom end of the support plate 381 is fixedly connected to the top of the movable upright plate 36. The support plate 381 is slidably connected to the slide groove 37. A baffle plate 382 is fixedly installed on the left front end of the support plate 381. A slot 385 is provided on the top of the support plate 381. A placement plate 383 is fixedly installed on the top of the support plate 381. A drive box 384 is fixedly installed on the bottom of the placement plate 383. The drive box 384 engages with the slot 385. A positive and negative threaded rod 3841 is movably installed on the right side of the inner wall of the drive box 384. The left end of the positive and negative threaded rod 3841 passes through... A rotating handle 3842 is fixedly installed on the left side of the drive box 384. The outer walls of the positive and negative threaded rods 3841 are provided with threaded walls with opposite threads on the left and right sides. The outer walls of the two threaded walls are threaded with moving rods 3844. The top of the drive box 384 is provided with a moving groove 2 3843 that penetrates its inner cavity. The placement plate 383 is provided with a moving groove 1 3831 that is vertically connected. The moving groove 1 3831 and the moving groove 2 3843 are interconnected. The tops of the two moving rods 3844 penetrate the moving groove 2 3843 and the moving groove 1 3831 to the top of the placement plate 383 and are respectively fixedly installed with clamps 3845.

[0027] When it is necessary to install the test equipment on the placement plate 383 at the top of the support plate 381, the equipment can be placed directly at the center of the top of the placement plate 383. Then, rotate the handle 3842 to drive the positive and negative threaded rod 3841 to rotate. The moving rod 3844, which is threaded on the opposite threaded walls on the left and right sides of the positive and negative threaded rod 3841, can clamp and fix the equipment placed on the placement plate 383 with its top clamping plate 3845, so as to ensure the stability of the equipment during the movement of the support plate 381.

[0028] The working principle of this electromagnetic anechoic chamber testing equipment with obstacle avoidance function will be explained in detail below.

[0029] like Figure 1-5As shown, when the overall position of the mobile frame support mechanism 38 needs to be adjusted, the motor 34 in the drive compartment 33 is started, which drives the threaded rod 35 to rotate. The threaded connection between the movable upright plate 36 and the threaded rod 35 allows the mobile frame support mechanism 38 at its top to move via the slide groove 37. Simultaneously, the movable upright plate 36 slides against the outer wall of the limit rod 39 to maintain stability. In the initial state, the infrared rays emitted by the embedded infrared emitter 327 are received by the embedded infrared receiver 328, thus powering the embedded electromagnet 329. The movable absorbing wedge base 321 can be attracted and merged with the fixed absorbing wedge base 322 by the embedded electromagnet 329. At the same time, it will compress the spring 325 on the left side of the connecting plate 324 between the opposite sides of the suspension rod 323 towards the fixed suspension plate 326. When the supporting plate 381 moves to the rear of the floor 31 under the drive of the movable upright plate 36, the one-millimeter-thick solid opaque baffle 382 will be inserted into the gap between the movable absorbing wedge base 321 and the fixed absorbing wedge base 322 at the rear, thereby blocking the infrared rays emitted by the embedded infrared emitter 327 from being received by the embedded infrared receiver 328, thus causing the embedded electromagnet 329 to lose its magnetism and become de-energized. The method of adsorption is used. The movable absorbing wedge base 321 on the rear side of the supporting plate 381 can separate from the fixed absorbing wedge base 322 under the action of the spring 325 pressing the connecting plate 324, so that the supporting plate 381 can move smoothly backward through the slide groove 37. When it is completely moved between the fixed absorbing wedge base 322 and the movable absorbing wedge base 321 at the rear side position, the infrared rays emitted by the embedded infrared emitter 327 between the movable absorbing wedge base 321 and the fixed absorbing wedge base 322 on the front side will be re-received by the embedded infrared receiver 328, and the embedded electromagnet 329 will be energized, so that the supporting plate 381 can completely pass through the slide groove 37. The movable absorbing wedge base 321 re-adheses and seals with the right side of the fixed absorbing wedge base 322. This process is repeated to avoid the bearing plate 381. When it is necessary to install test equipment on the placement plate 383 at the top of the bearing plate 381, the equipment can be placed directly at the center of the top of the placement plate 383. Then, rotate the handle 3842 to drive the positive and negative threaded rod 3841 to rotate. The moving rod 3844, which is threaded on the opposite threaded walls on the left and right sides of the positive and negative threaded rod 3841, can clamp and fix the equipment placed on the placement plate 383 with its top clamping plate 3845, ensuring the stability of the equipment during the movement of the bearing plate 381.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An electromagnetic anechoic chamber detection device with an obstacle avoidance function, comprising an electromagnetic anechoic chamber wall (1), characterized in that: The inner wall of the electromagnetic anechoic chamber (1) is fixedly equipped with wave-absorbing wedges (2) on the front, back, left, right and top of the inner wall. The bottom of the inner wall of the electromagnetic anechoic chamber (1) is provided with a floor absorption mechanism (3). The floor absorption mechanism (3) includes a floor (31). Several ground wave-absorbing wedge mechanisms (32) are fixedly installed in a rectangular array on the top of the floor (31). The floor (31) is provided with a drive cabin (33). A motor (34) is fixedly installed on the front side of the inner wall of the drive cabin (33). A threaded long rod (35) is fixedly installed on the output shaft of the motor (34). A movable upright plate (36) is threaded on the outer wall of the threaded long rod (35). A sliding groove (37) is provided on the top right side of the floor (31) and extends into the inner cavity of the drive cabin (33). A movable frame support mechanism (38) is provided on the top of the movable upright plate (36). The movable frame support mechanism (38) extends through the sliding groove (37) to the top of the floor (31).

2. The electromagnetic anechoic chamber detection device with avoidance function according to claim 1, characterized in that: Limiting rods (39) are fixedly installed between the front and rear sides of the inner wall of the drive cabin (33), and the limiting rods (39) are slidably connected to the movable upright plate (36).

3. The electromagnetic anechoic chamber detection device with avoidance function according to claim 1, characterized in that: The ground-based wave-absorbing wedge mechanism (32) includes several movable wave-absorbing wedge bases (321) arranged in a front-to-back pattern and several fixed wave-absorbing wedge bases (322) arranged in a rectangular array. The movable wave-absorbing wedge bases (321) are all located at the top right of the floor (31), and the fixed wave-absorbing wedge bases (322) are located to the left of the movable wave-absorbing wedge bases (321). Hanging rods (323) are fixedly installed on the front and rear sides of the bottom of the movable wave-absorbing wedge bases (321). The bottom end of the hanging rods (323) The drive compartment (33) has a cavity extending through to the inner cavity of the drive compartment (33). Several rod slots are provided on the top right side of the inner cavity of the drive compartment (33) extending to the top of the floor (31). The rods (323) are slidably connected to the rod slots. A connecting plate (324) is fixedly installed between the opposite faces of two rods (323). A spring (325) is fixedly installed on the left side of the connecting plate (324). A fixed hanging plate (326) is fixedly installed on the left side of the spring (325). The fixed hanging plate (326) is fixedly installed on the top of the inner wall of the drive compartment (33).

4. The electromagnetic anechoic chamber detection device with avoidance function according to claim 3, characterized in that: An embedded infrared emitter (327) is fixedly installed on the front left side of the movable absorbing wedge base (321), and an embedded infrared receiver (328) is fixedly installed on the front right side of the fixed absorbing wedge base (322). The embedded infrared emitter (327) and the embedded infrared receiver (328) are on the same horizontal line. An embedded electromagnet (329) is fixedly installed at the center of the opposite surfaces of the movable absorbing wedge base (321) and the fixed absorbing wedge base (322). When the infrared rays emitted by the embedded infrared emitter (327) are received by the embedded infrared receiver (328), the embedded electromagnet (329) is energized.

5. The electromagnetic anechoic chamber detection device with avoidance function according to claim 1, characterized in that: The mobile frame support mechanism (38) includes a support plate (381), the bottom end of which is fixedly connected to the top of the mobile upright plate (36), the support plate (381) is slidably connected to the slide groove (37), a baffle plate (382) is fixedly installed on the left side of the front end of the support plate (381), a slot (385) is opened on the top of the support plate (381), a placement plate (383) is fixedly installed on the top of the support plate (381), a drive box (384) is fixedly installed on the bottom of the placement plate (383), and the drive box (384) is engaged with the slot (385).

6. The electromagnetic anechoic chamber detection device with avoidance function according to claim 5, characterized in that: A positive and negative threaded rod (3841) is movably installed on the right side of the inner wall of the drive box (384). The left end of the positive and negative threaded rod (3841) extends through to the left side of the drive box (384) and is fixedly installed with a rotating handle (3842). The outer walls of the positive and negative threaded rod (3841) are provided with threaded walls with opposite threads on the left and right sides. The outer walls of the two threaded walls are threaded with moving rods (3844). The top of the drive box (384) is provided with a second moving groove (3843) that extends through its inner cavity. The placement plate (383) is provided with a first moving groove (3831) that extends vertically. The first moving groove (3831) and the second moving groove (3843) are interconnected. The top ends of the two moving rods (3844) extend through the second moving groove (3843) and the first moving groove (3831) to the top of the placement plate (383) and are respectively fixedly installed with clamps (3845).

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