Electromagnetic compatibility test bench

Abstract

The utility model provides an electromagnetic compatibility test bench which comprises a main body and a control button, the front end of the main body is provided with a housing used for protecting the interior of a test cavity, the inner side of the housing is provided with the test cavity used for testing an electromagnetic compatibility test sample, and the middle position in the test cavity is provided with a main bench used for supporting an auxiliary bench. The upper end of the main table is provided with an auxiliary table used for testing and bearing an electromagnetic compatibility test sample, and the upper end of the main body is provided with a group of control panels used for controlling motor driving and electromagnetic equipment. Compared with the prior art, the electromagnetic compatibility test device has the advantages that electromagnetic compatibility test samples are moved leftwards, rightwards, upwards and downwards through the main table and the auxiliary table, power of the motor is transmitted to the first screw rod through the transmission box, the auxiliary table is moved upwards and downwards through the top plate, and the top plate is kept to move upwards and downwards linearly through the four sets of supporting rods; and the support plate can stably move left and right by using the guide columns.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic compatibility test and relates to an electromagnetic compatibility test bench. Background Art

[0002] Electromagnetic compatibility testing refers to the test of evaluating the electromagnetic compatibility of systems and equipment under laboratory or field conditions using electromagnetic interference detection equipment and electromagnetic interference generating equipment. This mainly includes two aspects: first, the electromagnetic interference generated by the equipment to the environment in normal operation cannot exceed a certain limit; second, the equipment has a certain degree of immunity to the electromagnetic interference in the environment, that is, electromagnetic sensitivity. There are many types of electromagnetic interference sources, mainly from natural interference sources and man-made interference sources. Natural interference sources include atmospheric noise, solar noise, cosmic noise, electrostatic discharge, etc.; while man-made interference sources refer to electromagnetic interference generated by electrical / electronic equipment and other artificial devices. Electromagnetic compatibility testing is an important link to ensure that electronic products can work normally in different electromagnetic environments. In electromagnetic compatibility testing, it is crucial to conduct electromagnetic compatibility tests on test samples at different locations, because this can comprehensively evaluate the electromagnetic anti-interference ability of the product in various usage scenarios. If this multi-location test cannot be carried out, a series of problems may arise.

[0003] Electronic products may encounter electromagnetic interference from different directions in actual use. If the test is only carried out in a fixed position, the electromagnetic compatibility performance of the product may only be verified in a specific direction, while there are potential risks in other directions.

[0004] If multi-position electromagnetic compatibility testing is not performed during the design phase, electromagnetic interference problems that may exist in product design may be ignored. Therefore, an electromagnetic compatibility test bench is urgently needed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an electromagnetic compatibility test bench to solve the problems raised in the above background technology.

[0006] The utility model is realized by the following technical scheme: an electromagnetic compatibility test bench, comprising: a main body and a control button, a cover shell for protecting the inside of a test cavity is provided at the front end of the main body, and a test cavity for testing electromagnetic compatibility test samples is provided inside the cover shell;

[0007] A main platform for supporting the auxiliary platform is provided in the middle of the test chamber, an auxiliary platform for testing and carrying electromagnetic compatibility test samples is provided at the upper end of the main platform, and a control panel for controlling the motor drive and electromagnetic equipment is provided at the upper end of the main body;

[0008] A group of control buttons are provided on the rear side of the control panel. The main body and the cover shell are connected by a hinge shaft. The cover shell is made of a transparent material. The main platform is fixed to the inside of the test chamber by bolts. The main platform and the auxiliary platform are fixed by bolts. The electromagnetic compatibility test sample can be moved left and right and up and down by using the main platform and the auxiliary platform.

[0009] As a preferred embodiment, an electromagnetic device for releasing electromagnetics is provided inside the main body, and the electromagnetic device is a KH3939 type EMI conducted radiation interference device, and the electromagnetic device is an integrated structure with the control panel and the control buttons.

[0010] As a preferred embodiment, the main platform includes a motor and an inner bearing. A transmission box for vertical power transmission is provided on the right side of the motor. A group of screw rods 1 for driving the top plate to move up and down is provided in the middle of the transmission box. The motor power can be transmitted to screw rod 1 by using the transmission box.

[0011] As a preferred embodiment, a group of inner rotating shafts are provided at the lower end of the screw rod, and a bottom plate for supporting four groups of support rods is provided at the upper end of the transmission box. A group of top plates for vertically guiding the top plate are provided at the upper ends of the four groups of positive angles of the bottom plate, so that the sub-platform can be moved up and down by using the top plate.

[0012] As a preferred embodiment, a group of inner bearings are provided in the middle of the top plate, and a groove is provided inside the inner bearing for interlocking with the top of the screw rod, and an insert head is provided at the upper end of the screw rod for interlocking with the groove;

[0013] The embedding head and the embedding groove are embedded in each other, the motor is connected to the transmission box power, and the motor, the transmission box and the screw constitute a worm screw elevator with vertical power transmission. A group of connecting holes are provided inside the four groups of positive corners of the top plate, and each group of the connecting holes is movably embedded in a group of support rods. The four groups of support rods can keep the top plate moving up and down in a straight line.

[0014] As a preferred embodiment, the sub-platform includes a handle and a fixed seat. A screw rod 2 for driving the carrier to move left and right is provided on the right side of the handle. A carrier for carrying electromagnetic compatibility test samples is provided in the middle of the screw rod 2. A group of guide columns are provided inside the front and rear sides of the carrier, and the guide columns can be used to keep the carrier able to move left and right stably.

[0015] As a preferred embodiment, a fixing seat 1 for connecting and fixing one group is provided on the left side of the two groups of guide columns, and a fixing seat 2 is provided on the right side of the two groups of guide columns. The fixing seat 1 and the fixing seat 2 have the same specifications, and the fixing seat 1 and the fixing seat 2 are both connected and fixed to the top plate by bolts.

[0016] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by using the main table and the auxiliary table to move the electromagnetic compatibility test sample left and right and up and down, by using the transmission box to transmit the motor power to screw one, by using the top plate to move the auxiliary table up and down, by using four groups of support rods to keep the top plate moving up and down in a straight line, and by using guide columns to keep the carrier plate able to move stably left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a schematic diagram of the left oblique front view of an electromagnetic compatibility test bench of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the main platform in an electromagnetic compatibility test bench of the utility model, viewed from the left oblique side;

[0020] Figure 3 This is a left oblique top view of the auxiliary platform in an electromagnetic compatibility test bench of the utility model;

[0021] Figure 4 This is a bottom view of the structure of an inner bearing in an electromagnetic compatibility test bench of the utility model;

[0022] In the figure: 100-main body, 110-cover, 120-test chamber, 130-main platform, 140-sub-platform, 150-control panel, 160-control button;

[0023] 13a-motor, 13b-transmission box, 13c-inner rotating shaft, 13d-bottom plate, 13e-support rod, 13f-screw rod 1, 13g-top plate, 13h-inner bearing;

[0024] 14a-handle, 14b-fixing seat 1, 14c-screw rod 2, 14d-carrying plate, 14e-fixing seat 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , an electromagnetic compatibility test bench, comprising: a main body 100 and a control button 160, a cover 110 for protecting the inside of a test cavity 120 is provided at the front end of the main body 100, and a test cavity 120 for testing an electromagnetic compatibility test sample is provided inside the cover 110;

[0027] A main platform 130 for supporting a sub-platform 140 is provided in the middle of the test chamber 120, and a sub-platform 140 for testing and carrying electromagnetic compatibility test samples is provided on the upper end of the main platform 130. A control panel 150 for controlling the drive of the motor 13a and the electromagnetic device is provided on the upper end of the main body 100;

[0028] A group of control buttons 160 are provided on the rear side of the control panel 150. The main body 100 and the cover shell 110 are connected by a hinge shaft. The cover shell 110 is made of a transparent material. The main platform 130 and the inside of the test chamber 120 are fixed by bolts. The main platform 130 and the auxiliary platform 140 are fixed by bolts. The electromagnetic compatibility test sample can be moved left and right and up and down by using the main platform 130 and the auxiliary platform 140.

[0029] An electromagnetic device for releasing electromagnetics is disposed inside the main body 100 . The electromagnetic device is a KH3939 type EMI conducted radiation interference device. The electromagnetic device, the control panel 150 and the control button 160 are integrated into one structure.

[0030] The main platform 130 includes a motor 13a and an inner bearing 13h. A transmission box 13b for vertical power transmission is provided on the right side of the motor 13a. A group of screws 13f for driving the top plate 13g to move up and down are provided in the middle of the transmission box 13b. The power of the motor 13a can be transmitted to the screws 13f by using the transmission box 13b.

[0031] A group of inner rotating shafts 13c are provided at the lower end of the screw rod 13f, and a bottom plate 13d for supporting four groups of support rods 13e is provided at the upper end of the transmission box 13b. A group of top plates 13g for vertically guiding the top plates 13g are provided at the upper ends of the four groups of positive corners of the bottom plate 13d. The sub-platform 140 can be moved up and down by using the top plates 13g.

[0032] A set of inner bearings 13h is provided in the middle of the top plate 13g, and a groove is provided inside the inner bearing 13h for interlocking with the top of the screw rod 13f, and an insert head is provided at the upper end of the screw rod 13f for interlocking with the groove;

[0033] The embedding head and the embedding groove are interlocked, the motor 13a is connected to the transmission box 13b, the motor 13a, the transmission box 13b and the screw 13f constitute a worm screw elevator with vertical power transmission, and a group of connecting holes are provided inside the four groups of positive corners of the top plate 13g, and each group of connecting holes is movably engaged with a group of support rods 13e, and the four groups of support rods 13e can keep the top plate 13g moving up and down in a straight line.

[0034] The sub-stage 140 includes a handle 14a and a fixing seat 14e. A screw 14c is provided on the right side of the handle 14a for driving a carrier 14d to move left and right. A carrier 14d for carrying electromagnetic compatibility test samples is provided in the middle of the screw 14c. A group of guide columns are provided inside the front and rear sides of the carrier 14d, which can keep the carrier 14d able to move left and right stably by using the guide columns.

[0035] A fixing seat 14b for connecting and fixing one group is provided on the left side of the two groups of guide columns, and a fixing seat 14e is provided on the right side of the two groups of guide columns. The fixing seat 14b and the fixing seat 14e have the same specifications, and the fixing seat 14b and the fixing seat 14e are both connected and fixed to the top plate 13g by bolts.

[0036] See also Figure 1-Figure 4 , as the first embodiment of the utility model: in order to solve the problem that electronic products may encounter electromagnetic interference from different directions in actual use, if the test is only carried out in a fixed position, the electromagnetic compatibility performance of the product may only be verified in a specific direction, while there are potential risks in other directions. First, when the staff needs to conduct an electromagnetic compatibility test, the sample to be tested is placed on the upper end of the carrier 14d. Then, since an electromagnetic device for releasing electromagnetics is provided inside the main body 100, the electromagnetic device is a KH3939 type EMI conducted radiation interference device, and the electromagnetic device The device is integrated with the control panel 150 and the control button 160. The staff starts the electromagnetic device to perform an electromagnetic interference test on the device. When multi-position data reading is required, the staff starts the motor 13a, and the motor 13a can drive the screw 13f to rotate through the transmission box 13b, thereby controlling the top plate 13g to move up and down along the path of the four groups of support rods 13e. The staff rotates the handle 14a, and the handle 14a drives the screw 2 14c to rotate, thereby controlling the screw 2 14c to move left and right between the two groups of guide columns, and driving the test sample to move left and right.

[0037] See also Figure 1-Figure 4, as the second embodiment of the utility model: based on the description in the above embodiments, further, since the test sample moves up, down, left and right, its top plate 13g moves up and down along the path of four groups of support rods 13e, and the carrier plate 14d moves left and right along the path of two groups of guide columns, the test sample can be kept stable during the movement, thereby accurately reading the changes in electromagnetic data generated during the movement.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic compatibility test bench, comprising: A main body (100), a main platform (130), a sub-platform (140), and a control button (160), characterized in that: a cover shell (110) for protecting the interior of a test chamber (120) is provided at the front end of the main body (100), and a test chamber (120) for testing electromagnetic compatibility test samples is provided inside the cover shell (110); A main table (130) for supporting a sub-table (140) is provided in the middle of the test chamber (120); a sub-table (140) for carrying electromagnetic compatibility test samples is provided at the upper end of the main table (130); and a control panel (150) for controlling the drive of the motor (13a) and electromagnetic equipment is provided at the upper end of the main body (100); A group of control buttons (160) is provided on the rear side of the control panel (150); the main body (100) and the cover shell (110) are connected via a hinge shaft; the cover shell (110) is made of a transparent material; the main platform (130) and the interior of the test chamber (120) are connected and fixed via bolts; and the main platform (130) and the auxiliary platform (140) are connected and fixed via bolts.

2. The electromagnetic compatibility test bench according to claim 1, characterized in that: An electromagnetic device for releasing electromagnetics is provided inside the main body (100); the electromagnetic device is a KH3939 type EMI conduction radiation interference device; the electromagnetic device, the control panel (150) and the control button (160) are an integrated structure.

3. The electromagnetic compatibility test bench according to claim 1, characterized in that: The main platform (130) comprises a motor (13a) and an inner bearing (13h). A transmission box (13b) for vertical power transmission is provided on the right side of the motor (13a). A set of screw rods (13f) for driving the top plate (13g) to move up and down are provided in the middle of the transmission box (13b).

4. The electromagnetic compatibility test bench according to claim 3, characterized in that: A group of inner rotating shafts (13c) are provided at the lower end of the screw rod (13f), a bottom plate (13d) for supporting four groups of support rods (13e) is provided at the upper end of the transmission box (13b), and a group of top plates (13g) for vertically guiding the top plate (13g) are provided at the upper ends of the four groups of positive angles of the bottom plate (13d).

5. The electromagnetic compatibility test bench according to claim 4, characterized in that: A group of inner bearings (13h) are provided in the middle of the top plate (13g), and an embedding groove for interlocking with the top of the first screw (13f) is provided inside the inner bearing (13h), and an embedding head for interlocking with the embedding groove is provided at the upper end of the first screw (13f); The embedding head and the embedding groove are mutually embedded, the motor (13a) is connected to the transmission box (13b) by power, the motor (13a), the transmission box (13b) and the screw rod (13f) constitute a worm screw elevator with vertical power transmission, and a group of connecting holes are provided inside the four groups of positive corners of the top plate (13g), and each group of the connecting holes is movably embedded with a group of support rods (13e).

6. The electromagnetic compatibility test bench according to claim 1, characterized in that: The auxiliary platform (140) comprises a rotary handle (14a) and a second fixing seat (14e); a second screw rod (14c) for driving a carrier plate (14d) to move left and right is provided on the right side of the rotary handle (14a); a carrier plate (14d) for carrying an electromagnetic compatibility test sample is provided in the middle of the second screw rod (14c); and a group of guide columns are provided inside the front and rear sides of the carrier plate (14d).

7. The electromagnetic compatibility test bench according to claim 6, characterized in that: A fixing seat 1 (14b) for connecting and fixing one group is provided on the left side of the two groups of guide columns, and a fixing seat 2 (14e) is provided on the right side of the two groups of guide columns. The fixing seat 1 (14b) and the fixing seat 2 (14e) have the same specifications, and the fixing seat 1 (14b) and the fixing seat 2 (14e) are both connected and fixed to the top plate (13g) by bolts.

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