Cable auxiliary laying device suitable for electromagnetic compatibility test

Abstract

The utility model provides a cable auxiliary laying device suitable for an electromagnetic compatibility test, and relates to the technical field of electromagnetic compatibility detection. The cable auxiliary laying device suitable for the electromagnetic compatibility test comprises a foam supporting base plate used for supporting a cable and a foam stop block used for fixing the distance between the cables. The foam supporting base plate is used as an insulating supporting material, the dielectric strength is low, the standard requirement is met, the foam check block with the thickness of 2 cm is used as the spacing baffle, the cable spacing can be accurately controlled, meanwhile, one face of the foam check block is provided with the hook-and-loop fastener hook face, one side of the top of the foam supporting base plate is provided with the hook-and-loop fastener loop face, and therefore installation is convenient and fast, and repeated disassembly and assembly can be achieved. According to the auxiliary wiring device, the cable fixing bandage is arranged, and the magic tape is arranged at the end part of the cable fixing bandage, so that the cable can be conveniently fixed on the foam supporting base plate through the cable fixing bandage, the auxiliary wiring device is convenient and easy to use, and the testing efficiency can be greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromagnetic compatibility detection, in particular to a cable auxiliary laying device suitable for electromagnetic compatibility test. BACKGROUND

[0002] With the rapid development of electronic technology, various electrical appliances in life are also increasing, the electromagnetic environment is increasingly complex, and the power density is continuously increasing. When various electronic and electrical equipment works in the same space at the same time, it will generate an electromagnetic field of a certain intensity around it. Whether in life or in the work environment, there are a large number of electromagnetic fields of different frequencies, both natural electromagnetic interference sources such as lightning, static electricity, etc., and strong man-made interference sources such as radar, electronic warfare, communication, etc. The high electric field radiation of the external radio frequency environment is an important part of the complex electromagnetic environment, and the development of modern equipment systems must consider the high radiation field under the complex electromagnetic environment. In the strong electromagnetic environment, in order to enable various equipment systems and electrical and electronic equipment to work normally in the complex electromagnetic environment, the electromagnetic compatibility of the equipment is required to be very high.

[0003] In the electromagnetic compatibility test of military equipment and subsystems, in order to ensure the consistency of test results between various test rooms, the GJB 151 series standards have strict requirements for the placement and laying of the measured sample and the cable. According to the requirements of the GJB 151B-2013 standard, the desktop measured sample is usually placed on the test table, and the interconnecting line and interconnecting cable connected thereto should be combined into a cable in the same way as in the actual installation. The total length of the interconnecting cable in the test configuration should be consistent with the length of the actual platform installation (at least 10m long when the cable length exceeds 10m). When the cable length is not specified, the cable should be long enough to meet the following conditions: at least the first 2m line segment of each interconnecting cable terminated with the measured sample (unless the cable length in the actual installation is shorter than 2m) should be parallel to the front boundary of the configuration, and the remaining length of the cable should be placed in the rear part of the test configuration in the form of "Z". When more than one cable is used in the configuration, the cables are arranged with an outer skin spacing of 2cm. For desktop arrangements using a grounding panel, the cable closest to the front boundary should be placed at a position 10cm away from the front edge of the grounding panel. All cables are supported by non-conductive supports and are located 5cm above the grounding panel, and the dielectric constant of the support should be as low as possible.

[0004] As shown in the accompanying drawings Figure 1As shown, the zigzag arrangement of the long cable is achieved in the following way: first, lay a section of cable 10 cm in front of the tabletop edge, then lay the next section of cable in the opposite direction by 180°, and then lay each subsequent section in the opposite direction. Each subsequent section is gradually further away from the first section, and each section of cable is parallel, with a 2 cm gap between the cables. The long cable is arranged in a zigzag rather than a coil to control the additional inductance, and the 2 cm gap between the cables is required to expose all the laid cables to the test antenna and limit the coupling of signals between the cables. The 10 cm distance of the cable from the edge of the grounding panel ensures that there is enough surface of the grounding panel under the first cable. Raising the cable by 5 cm using an insulating support standardizes the coupling loop area and the capacitance to the grounding panel.

[0005] At present, some laboratories use wooden boards as insulating supports and use fixed wooden strips on the wooden boards to isolate a certain distance for laying cables; some laboratories use plastic foam pad as insulating support for testing, and due to the strength problem of the foam board, the isolation belt cannot be installed, and the cables of the sample to be tested are usually pasted on the foam pad using adhesive tape and other tools.

[0006] The use of the above two types of insulating supports is difficult to meet the requirements of standardization and consistency of the test arrangement in the GJB 151 standard in the actual operation process. For example, the insulating support using wooden boards and fixed isolation strips is difficult to meet the requirement of a 2 cm gap between the cables when facing cables of different thicknesses, and the dielectric strength of wooden materials is greater than that of foam materials, which does not fully meet the requirement of the standard that the dielectric strength should be as low as possible. When using foam as an insulating support, the gap between the cables can be adjusted to the standard required distance at any time without the interference of the isolation belt, and the cables are fixed on the insulating support using glue. However, in the actual operation process, due to the hardness problem of the cable itself, it is difficult to bend and use adhesive tape to paste during laying, and the gap is mostly adjusted by the test engineer according to experience, which is difficult to meet the requirements of the standard. Inventive content

[0007] In order to overcome the existing deficiencies, the cable auxiliary laying device for electromagnetic compatibility test provided by the embodiments of the present application can solve the problem of inconvenient adjustment of the gap between the cables.

[0008] The technical scheme adopted by the embodiments of the present application to solve the technical problems is: a cable auxiliary laying device for electromagnetic compatibility test, comprising a foam support pad for supporting the cable and a foam block for fixing the distance between the cables.

[0009] The foam support pad is connected with a plurality of detachable cable fixing bands, and the foam block is provided with a plurality of detachable foam blocks mounted on the foam support pad.

[0010] In a specific embodiment, the thickness of the foam support pad is cm.

[0011] In a specific embodiment, a plurality of through holes are formed on the foam support pad, and the plurality of through holes are uniformly distributed on the foam support pad.

[0012] In a specific embodiment, the cable fixing bandage is provided with Velcro at both ends, and the Velcro at both ends can be coupled, and the cable fixing bandage is arranged through two of the through holes.

[0013] In a specific embodiment, the thickness of the foam block is cm.

[0014] In a specific embodiment, the top of the foam support pad is provided with a layer of Velcro fluff surface, and one side of the foam block is provided with a Velcro hook surface, so that the foam block can be adhered to the foam support pad.

[0015] In a specific embodiment, the bottom of the foam support pad is provided with a receiving groove, and the bottom of each of the plurality of through holes is in communication with the receiving groove.

[0016] The advantages of the embodiment of the present application are as follows: by using a foam support pad as an insulating support material, the dielectric strength is low, which meets the standard requirements, and by using a 2cm-thick foam block as a spacing baffle, the cable spacing can be accurately controlled, and by arranging a Velcro hook surface on one side of the foam block and a Velcro fluff surface on the top of the foam support pad, the installation is convenient, and the foam support pad can be repeatedly disassembled and used, and by arranging a cable fixing bandage, the end of the cable fixing bandage is provided with Velcro, so that the cable can be fixed on the foam support pad through the cable fixing bandage, the set of auxiliary wiring device is convenient and easy to use, and the test efficiency can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the existing GJB 151 desktop equipment test configuration;

[0018] Figure 2 It is a schematic diagram of the main structure of the cable auxiliary laying device for electromagnetic compatibility test provided by the embodiment of the present application;

[0019] Figure 3 It is a schematic diagram of the bottom structure of the cable auxiliary laying device for electromagnetic compatibility test provided by the embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of the foam block structure of the cable auxiliary laying device for electromagnetic compatibility test provided by the embodiment of the present application.

[0021] In the figure: 10-foam support pad; 110-through hole; 120-receiving groove; 20-cable fixing band; 30-foam block. DETAILED DESCRIPTION

[0022] The technical solution in the embodiments of the present application is to solve the problem of inconvenient adjustment of the spacing between the existing cables, and the general idea is as follows:

[0023] Embodiments

[0024] Please refer to Figures 1-4 A cable auxiliary laying device suitable for electromagnetic compatibility test comprises

[0025] The foam support pad 10 is used for supporting the cable, and a plurality of detachable cable fixing bands 20 are connected to the foam support pad 10. The foam support pad 10 serves as an insulating support material, and has low dielectric strength. Meanwhile, the cable fixing bands 20 can be changed in position on the foam support pad 10, so as to conveniently adjust the position of the cable and facilitate fixing of the cable.

[0026] The foam block 30 is used for fixing the spacing between the cables, and a plurality of foam blocks 30 are provided and can be detachably installed on the foam support pad 10. The foam block 30 can be a foam block or a foam strip, and the thickness of the foam block 30 is 2 cm.

[0027] The thickness of the foam support pad 10 is 5 cm. A plurality of through holes 110 are formed in the foam support pad 10, and the plurality of through holes 110 are uniformly distributed on the foam support pad 10. Specifically, the cable fixing bands 20 are connected to the foam support pad 10 through the through holes 110, so as to adjust the position of the cable fixing bands 20 on the foam support pad 10 and facilitate adjustment of the position of the cable.

[0028] The two ends of the cable fixing band 20 are provided with Velcro, and the two ends of the Velcro can be coupled. The cable fixing band 20 is arranged by penetrating two of the through holes 110. The thickness of the foam block 30 is 2 cm. When arranged, the cable fixing band 20 can penetrate two of the through holes 110, and then the Velcro at the two ends is connected, so as to connect the cable fixing band 20 to the foam support pad 10. Meanwhile, the cable can be fixed to the foam support pad 10 by the cable fixing band 20.

[0029] The top of the foam support pad 10 is provided with a layer of Velcro fluff surface. One side of the foam block 30 is provided with a Velcro hook surface, so that the foam block 30 can be stuck to the foam support pad 10. Specifically, the Velcro hook surface can be coupled with the Velcro fluff surface, so as to fix the foam block 30 to the foam support pad 10, thereby facilitating adjustment of the position of the foam block 30 on the foam support pad 10 and facilitating limiting of the cable.

[0030] The bottom of the foam support pad 10 is provided with a containing groove 120, and the bottoms of the plurality of through holes 110 are communicated with the containing groove 120. It should be noted that the two ends of the cable fixing band 20 are located in the containing groove 120 after being connected.

[0031] The application is used:

[0032] The foam support pad 10 is placed on the test bench, and is adjusted to a suitable position. The first bundle of cables of the measured sample is laid parallel along the front edge of the table top at a distance of 10 cm. The foam block 30 is used to tightly place the first bundle of cables of the measured sample, and the cable fixing band 20 is used to fix the first bundle of cables on the foam support pad 10. Specifically, the cable fixing band 20 is passed through the corresponding two through holes 110, and the cables are fixed on the foam support pad 10. Then, the remaining cables can be arranged at intervals of 2 cm by using the foam block 30, and the cables are fixed on the foam support pad 10 by using the cable fixing band 20.

[0033] It should be noted that the specific model and specification of the cable fixing band 20 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in the art, and therefore will not be described in detail.

[0034] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the application, and are not limitations on the embodiments. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A cable assisted laying device suitable for electromagnetic compatibility testing, characterized in that, Comprising A foam support pad (10) for supporting cables, a plurality of detachable cable fixing bands (20) are connected to the foam support pad (10); A plurality of foam blocks (30) for fixing cable spacing are provided and detachably installed on the foam support pad (10).

2. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 1, wherein, The thickness of the foam support pad (10) is 5 cm.

3. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 1, wherein, A plurality of through holes (110) are formed on the foam support pad (10), and the through holes (110) are uniformly distributed on the foam support pad (10).

4. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 3, wherein, The cable fixing band (20) is provided with a Velcro at both ends, and the two ends of the Velcro can be coupled, and the cable fixing band (20) passes through two of the through holes (110).

5. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 1, wherein, The thickness of the foam block (30) is 2 cm.

6. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 1, wherein, The top of the foam support pad (10) is provided with a layer of Velcro surface, and one side of the foam block (30) is provided with a Velcro hook surface, so that the foam block (30) can be adhered to the foam support pad (10).

7. The cable assisted deployment apparatus suitable for electromagnetic compatibility testing of claim 4, wherein, The bottom of the foam support pad (10) is provided with a receiving groove (120), and the bottom of the through hole (110) is communicated with the receiving groove (120).

Images