Cabinet grounding device and method for satellite standardized test system

Abstract

The invention provides an equipment cabinet grounding device and method for a satellite standardized test system. The equipment cabinet grounding device comprises an equipment cabinet main grounding wire, an equipment grounding wire, an inter-equipment cabinet grounding wire, a grounding pile grounding wire and a grounding pile, the cabinet main grounding wire is used for grounding and gathering all test equipment in a single cabinet in a satellite standardized test system in the cabinet and mounting and fixing a gathered grounding network in the cabinet; the equipment grounding wire is used for connecting each test equipment grounding pole in the cabinet with a main grounding wire of the cabinet; the inter-cabinet ground wire is used for connecting cabinets of the satellite standardization test system; the grounding pile grounding wire is used for connection between a satellite standardization test system cabinet and a test system grounding pile. The grounding pile is used for connection between the satellite standardization test system and the satellite plant ground. According to the invention, reliable grounding between all satellite test equipment and the satellite plant ground is realized through a cascade connection mode, and the grounding device is high in expandability.

Description

Technical Field

[0001] The present invention relates to the field of satellite testing technology, and in particular to a cabinet grounding device and method for a satellite standardized testing system. Background Art

[0002] A satellite is an extremely complex electrical system with high cost. During the satellite development process, a satellite ground test system is needed to conduct comprehensive and effective functional performance tests on the satellite. By continuously checking, locating and resolving satellite design and development defects and potential risks, it is ensured that the satellite is launched without any problems and can perform effectively in space. To achieve the successful development of a satellite, satellite test safety is a prerequisite guarantee, that is, all satellite tests must be carried out under the premise of ensuring satellite test safety.

[0003] As an important technical means to ensure the safety of satellite testing, the grounding of the test system can not only discharge static electricity to prevent static discharge damage to satellite stand-alone products and test equipment, avoid electric shock accidents, and ensure personnel safety; it can also improve the quality of satellite-to-ground signal transmission and anti-interference ability. If the grounding is not handled properly, it may cause damage to the signal interface, malfunction of the satellite stand-alone, and cause serious consequences such as damage to the on-board products or even the entire satellite. At present, satellite testing technology is becoming more and more mature, and has reached the stage of standardized test systems with cabinets as component units according to the functional components of the satellite. It is particularly important to design a safe, reliable, and easy-to-use grounding device for the satellite standardized test system cabinet. The design of the grounding device is based on the principles of low cost, safe and reliable operation, and simplicity and convenience. Satellite test personnel will not accidentally overlap the grounding device with other signal lines or metal excess objects when performing other operations on the test system, effectively avoiding signal short circuit problems and ensuring the safety of satellite testing.

[0004] At present, the grounding device of the satellite test system has the following obvious shortcomings:

[0005] 1. Insufficient safety: The bare ground wire is used to wrap around the grounding poles or grounding screws of all equipment, which is easy to overlap with the metal pins and sockets or metal excess of the signal transmission cable connectors of the satellite test system, causing signal short circuits, and even electrostatic discharge and ignition, which may burn the satellite stand-alone product or the entire satellite. The safety of satellite testing is difficult to ensure;

[0006] 2. Inconvenient operation and low work efficiency. The satellite test system needs to be moved with the satellite to various dedicated satellite test plants, so the ground wire needs to be frequently disassembled and installed. In addition, the replacement of test equipment failure or expired measurement also requires frequent disassembly and installation of the ground wire. The disassembly and installation of the ground network wrapped with bare metal wires is very time-consuming and laborious, which brings inconvenience to the test personnel and makes work efficiency impossible.

[0007] 3. Insufficient reliability: When using a grounding wire with an alligator clip to connect the test equipment, the contact area between the alligator clip and the grounding column or grounding screw is very limited, which can easily cause unreliable grounding. In addition, after the satellite test system is transferred, the test personnel need to perform various cable connection operations on the test equipment to re-establish the test system status. It is very easy to touch the alligator clip of the grounding wire and cause it to slide under force, causing the equipment grounding to fail, affecting the normal operation of the test equipment, and the correctness of the satellite function performance test results is difficult to guarantee; Summary of the invention

[0008] In view of the defects in the prior art, an object of the present invention is to provide a cabinet grounding device and method for a satellite standardized test system.

[0009] A cabinet grounding device for a satellite standardized test system provided by the present invention comprises: a cabinet main grounding wire, an equipment grounding wire, an inter-cabinet grounding wire, a grounding pile grounding wire and a grounding pile;

[0010] The cabinet main grounding wire is used for grounding all test equipment in a single cabinet in a satellite standardized test system, and for installing and fixing the grounding network after grounding in the cabinet;

[0011] The equipment grounding wire is used to connect the grounding pole of each test equipment in the cabinet and the main grounding wire of the cabinet;

[0012] The inter-cabinet ground wire is used for connecting cabinets of the satellite standardization test system;

[0013] The grounding pile grounding wire is used for connecting the satellite standardization test system cabinet and the test system grounding pile;

[0014] The grounding pile is used for connecting the satellite standardization test system with the ground of the satellite plant.

[0015] Preferably, the cabinet main grounding wire includes a trunk grounding wire, a branch grounding wire, a jack-type press buckle, a crimped copper tube and a ring welding piece;

[0016] The main grounding wire is used to aggregate the grounding of all test equipment in a single cabinet in a satellite test system, and to connect and support branch grounding wires. Annular welding pieces are welded at both ends of the main grounding wire. One end of the branch grounding wire is connected to a plug-in press buckle for connecting the equipment grounding wire, and the other end is connected to the main grounding wire through a crimped copper tube.

[0017] Preferably, the equipment grounding wire comprises a U-shaped welding piece, a grounding wire and a pin-type press buckle;

[0018] One end of the grounding wire is connected to a pin-type push-button clip and a matching socket-type lock of a branch grounding wire of the cabinet's main grounding wire to connect the equipment grounding to the cabinet's main grounding wire. The other end of the grounding wire is connected to the test equipment grounding column or grounding screw through a U-shaped welding piece.

[0019] Preferably, the inter-cabinet ground wire comprises an annular welding piece, a grounding wire and a press-type buckle;

[0020] One end of the inter-cabinet ground wire is welded with a ring-shaped welding piece to realize the connection between the ground wire and the cabinet grounding column when the inter-cabinet ground wire is cascaded, and the press buckle welded at the other end of the inter-cabinet ground wire realizes the inter-cabinet ground wire cascading and the interconnection between the cabinet ground wire and the grounding pile ground wire.

[0021] Preferably, the grounding pile grounding wire comprises an annular welding piece, a grounding wire and a jack-type press-type buckle;

[0022] One end of the grounding wire of the grounding pile is connected to the pin-type push-type buckle of the grounding wire between the cabinets through a jack-type push-type buckle, and the other end of the grounding wire of the grounding pile is welded with a ring welding piece to connect the satellite test grounding piles in the factory through the nut on the satellite grounding pile;

[0023] Preferably, the grounding stake comprises a threaded metal rod;

[0024] One end of the metal rod with a thread is connected to the grounding pile grounding wire, and the other end of the metal rod is buried in the soil below the foundation.

[0025] Preferably, all crimping points and welding points in the cabinet grounding device are insulated and protected by heat shrink tubing.

[0026] A cabinet grounding method for a satellite standardized test system provided by the present invention comprises:

[0027] Step S1: fix the annular welding pieces at both ends of the cabinet main grounding wire to the mounting holes on the support column of the test system cabinet and the cabinet grounding column respectively by using bolts, nuts and spring washers;

[0028] Step S2: The equipment grounding wire is fixed to the equipment in the cabinet through the equipment's grounding screw or grounding column. Each test equipment is fixed with an equipment grounding wire. The grounding wires of all equipment in the cabinet and the branch grounding wires of the cabinet's main grounding wire are connected in sequence from top to bottom through their respective pin-and-socket press-and-clip test equipment to complete the grounding connection of a single test cabinet. By analogy, all equipment in the test cabinet of the satellite standardization test system completes the cabinet internal level grounding.

[0029] Step S3: sequentially connect the grounding posts at the lower end of a single cabinet to the annular welding piece of the grounding wire between the cabinets;

[0030] The first test cabinet is only equipped with one inter-cabinet ground wire with a plug-in press-on buckle. The remaining test cabinets are required to be equipped with two inter-cabinet ground wires with a pin and a plug-in press-on buckle. Then, all the test cabinets are connected to the inter-cabinet press-on buckles in order from left to right according to the cabinet layout to complete the cabinet ground wire cascade.

[0031] Step S4: The last test cabinet is connected to the test system grounding pile grounding wire by pressing the buckle, and the test system grounding pile grounding wire is installed with the test system grounding pile through nuts and spring washers.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The grounding device disclosed in the present invention has standardized composition, high modularization, simple manufacturing process, and low production and maintenance costs.

[0034] 2. The present invention realizes reliable grounding between all satellite test equipment and the ground of the satellite plant through a cascade mode, and the grounding device has strong scalability;

[0035] 3. The connection points of each component of the grounding device disclosed in the present invention are provided with heat shrink tubing to prevent accidental overlapping and short circuit, and the grounding device has good safety;

[0036] 4. The components of the grounding device disclosed in the present invention are connected by welding, crimping, snapping, bolts, etc. according to different usage occasions. The grounding device is easy to install and disassemble and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0038] Figure 1 It is a schematic diagram of the composition of the cabinet grounding device for the satellite standardization test system of the present invention;

[0039] Figure 2 The present invention is a schematic diagram of a method for using a cabinet grounding device for a satellite standardized test system. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0041] The present invention discloses a cabinet grounding device for a satellite standardized test system, referring to Figure 1 As shown, the device is divided into a cabinet main grounding wire, an equipment grounding wire, an inter-cabinet grounding wire, a grounding pile grounding wire, and a grounding pile. Among them, the cabinet main grounding wire is used to complete the grounding summary of all test equipment in a single cabinet in the satellite test system and the installation and fixation of the cabinet grounding network after the summary in the cabinet; the equipment grounding wire is used to complete the reliable connection between the grounding column of each test equipment in the cabinet and the cabinet main grounding wire; the inter-cabinet grounding wire is used to complete the reliable connection between the cabinets of the satellite test system; the grounding pile grounding wire is used to complete the reliable connection between the satellite test system cabinet and the satellite test system grounding pile; the grounding pile is used to complete the connection between the entire satellite test system equipment and the satellite plant ground, and finally realize the static discharge, potential reference and electromagnetic shielding protection of the satellite test system.

[0042] In a specific implementation, the cabinet main grounding wire is used to complete the grounding aggregation of all test equipment in a single cabinet in a satellite test system and the installation and fixation of the aggregated cabinet grounding network in the cabinet. The main grounding wire of the cabinet adopts a tree-shaped branch configuration, which consists of a main grounding wire, a branch grounding wire, a jack-type push-on clip, a crimped copper tube, a ring welding piece, and a heat shrink tubing; among them: the main grounding wire is used to complete the grounding summary of all test equipment in a single cabinet in the satellite test system and to support the branch grounding wire. Ring welding pieces are welded at both ends of the main grounding wire, and bolts and nuts are used to firmly and reliably fix the main grounding wire between the mounting hole on the support column of the test system cabinet and the cabinet grounding column through the ring welding piece. The mechanical size of the ring welding piece should not be too large, and an inner diameter of 8mm can be used, which is convenient for connecting to the mounting hole on the support column of the test system cabinet and the cabinet grounding column; one end of the branch grounding wire is connected to a jack-type push-on clip for connecting the equipment grounding wire, and the other end is connected to the main grounding wire through a crimped copper tube, so as to realize the aggregation of all equipment grounding wires in all cabinets of the satellite standardization test system to the main grounding wire. In this embodiment, the branch ground wires are evenly spaced at 2U height in the main ground wire of the cabinet to ensure that they meet the grounding connection requirements of equipment at different heights in all cabinets in the satellite standardized test system. This design not only realizes the standardization of the main ground wire of the cabinet, but also enhances the scalability of the grounding device. In this embodiment, the length of the branch ground wire is 14mm, which takes into account both convenient operation and test safety. All crimping points and welding points of the main ground wire of the cabinet are insulated and protected by heat shrink tubing to avoid overlapping and short circuiting of other signal lines, ensuring the safety of satellite testing.

[0043] The equipment grounding wire is used to complete the reliable connection between the grounding column of each test equipment in the cabinet and the main grounding wire of the cabinet. The equipment grounding wire consists of a U-shaped welding piece, a grounding wire, a pin-type press buckle, and a heat shrink tubing; wherein: the pin-type press buckle welded on one end of the grounding wire matches the socket-type lock buckle of the branch grounding wire of the cabinet main grounding wire to connect the equipment grounding to the cabinet main grounding wire, and the other end of the grounding wire is connected to the test equipment grounding column or grounding screw through a U-shaped welding piece; the use of press buckle and U-shaped welding piece interface is to meet the convenience of satellite test equipment failure replacement or equipment expiration measurement; all welding points of the equipment grounding wire are insulated and protected by heat shrink tubing to avoid short circuits of other signal lines. The length of the equipment grounding wire should not be too long or too short. It is necessary to compromise and unify according to the distance between the equipment grounding column or grounding screw and the branch grounding wire in the cabinet main grounding wire. In this embodiment, the equipment grounding wire adopts a length of 20cm to ensure that it can meet the connection requirements of different equipment in all cabinets in the satellite standardized test system and the cabinet main grounding wire.

[0044] The inter-cabinet ground wire is used to complete the reliable connection between the cabinets of the satellite test system. The inter-cabinet ground wire is composed of a ring welding piece, a grounding wire, a push-type clip, and a heat shrink tubing; the ring welding piece at one end of the inter-cabinet ground wire realizes the connection between the ground wire and the cabinet grounding column when the inter-cabinet ground wire is cascaded, and the press-type clip is welded on the other end of the inter-cabinet ground wire to realize the inter-cabinet ground wire cascading and the interconnection between the cabinet ground wire and the grounding pile ground wire. Therefore, the press-type clip of the inter-cabinet ground wire has two specifications: pin type and socket type; the press-type clip is used to meet the convenience of grounding connection and disconnection operations between cabinets and between cabinets and test plant grounding piles when the satellite test system is transferred or the whole cabinet is replaced. In this embodiment, the inter-cabinet ground wire adopts a length of 50cm to ensure that it meets the cascading requirements of all cabinet ground wires in the satellite standardized test system.

[0045] The grounding pile grounding wire is used to complete the reliable connection between the satellite test system cabinet and the satellite test system grounding pile. The grounding pile grounding wire is composed of a ring welding piece, a grounding wire, a jack-type push-type buckle, and a heat shrink tubing; the jack-type push-type buckle at one end of the grounding pile grounding wire is connected to the pin-type push-type buckle of the cabinet inter-ground wire to realize the connection between the factory satellite test grounding pile and the test system cabinet, and the other end of the grounding pile grounding wire is welded with a ring welding piece through the nut on the satellite grounding pile to realize the connection between the factory satellite test grounding piles. In this embodiment, the grounding pile grounding wire adopts a length of 500cm to ensure that it meets the grounding connection requirements between the terminal cabinet and the grounding pile in the satellite standardized test system.

[0046] The grounding pile is used to complete the connection between the entire satellite test system equipment and the ground of the satellite plant, and ultimately achieve the static discharge, potential reference and electromagnetic shielding protection of the satellite test system. The grounding pile consists of a threaded metal rod and a nut; the threaded end of the metal rod is connected to the grounding wire of the grounding pile, and the other end is buried in the soil below the foundation, making close contact with the ground and forming a conductor electrically connected to the ground; static discharge, potential reference, and electromagnetic shielding are achieved to ensure the safety of the satellite standardized test system and satellite testing.

[0047] The present invention discloses a method for using a satellite standardized test system cabinet grounding device, referring to Figure 2 As shown, the following steps are included:

[0048] Step S1: When grounding the cabinet of the satellite standardized test system, firstly, the annular welding pieces at both ends of the main grounding wire of the cabinet in the tree-shaped branch configuration are fixed to the mounting holes on the supporting columns of the cabinet of the test system and the cabinet grounding columns respectively by bolts, nuts and spring washers;

[0049] Step S2: The equipment grounding wire is fixed to the equipment in the cabinet through the equipment's grounding screw or grounding column. One test equipment is fixed with one equipment grounding wire. Then, the grounding wires of all equipment in the cabinet and the branch grounding wires of the cabinet's main grounding wire are connected in sequence from top to bottom through their respective pin-and-socket press-and-clip test equipment to complete the grounding connection of a single test cabinet. By analogy, all equipment in the test cabinet of the satellite standardized test system completes the cabinet internal level grounding.

[0050] Step S3: cascading the grounding wires between cabinets, specifically, connecting the grounding column at the lower end of a single cabinet to the ring welding piece of the inter-cabinet grounding wire from left to right in the order in which the cabinets of the test system are placed. It should be noted that the first test cabinet is only installed with one plug-in press-on buckle inter-cabinet grounding wire, and the remaining test cabinets are required to be installed with two inter-cabinet grounding wires, namely, a pin and a plug-in press-on buckle, and then the press-on buckles between all the test cabinets are connected in sequence to complete the cabinet grounding wire cascading;

[0051] Step S4: The last cabinet of the test system is connected to the grounding pile grounding wire by pressing the buckle, and the grounding pile grounding wire is installed with the test system grounding pile through nuts and spring washers, finally achieving reliable connection between all test equipment of the entire satellite standardized test system and the test system grounding pile.

[0052] When the satellite test equipment fails or the equipment needs to be replaced due to expiration, you only need to disconnect the push-button clip between the equipment grounding wire and the main grounding wire of the cabinet, or simply loosen the equipment grounding screw or nut and pull out the U-shaped welding piece of the equipment grounding wire. The operation of replacing the equipment and disconnecting the grounding wire is very convenient; when the satellite test system is transferred or the entire cabinet is replaced, you only need to disconnect the push-button clip between the cabinet indirect grounding wire and the grounding pile grounding wire.

[0053] The cabinet grounding device for the satellite standardized test system provided in this embodiment has the characteristics of standardized and modularized structure, simple manufacturing, low cost, strong scalability, convenient operation, and wide application range, which effectively improves the reliability and safety of the grounding connection of the satellite test system equipment and ensures the safety of satellite testing. The device has been applied and promoted in dozens of satellite tests.

[0054] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A cabinet grounding device for a satellite standardized test system, characterized in that: include: Main cabinet grounding wire, equipment grounding wire, cabinet inter-grounding wire, grounding pile grounding wire and grounding pile; The cabinet main grounding wire is used for grounding all test equipment in a single cabinet in a satellite standardized test system, and for installing and fixing the grounding network after grounding in the cabinet; The equipment grounding wire is used to connect the grounding pole of each test equipment in the cabinet and the main grounding wire of the cabinet; The inter-cabinet ground wire is used for connecting cabinets of the satellite standardization test system; The grounding pile grounding wire is used for connecting the satellite standardization test system cabinet and the test system grounding pile; The grounding pile is used for connecting the satellite standardization test system with the ground of the satellite plant.

2. The cabinet grounding device for a satellite standardized test system according to claim 1, characterized in that: The cabinet main grounding wire includes a trunk grounding wire, a branch grounding wire, a jack-type press buckle, a crimped copper tube and a ring welding piece; The main grounding wire is used to aggregate the grounding of all test equipment in a single cabinet in a satellite test system, and to connect and support branch grounding wires. Annular welding pieces are welded at both ends of the main grounding wire. One end of the branch grounding wire is connected to a plug-in press buckle for connecting the equipment grounding wire, and the other end is connected to the main grounding wire through a crimped copper tube.

3. The cabinet grounding device for a satellite standardized test system according to claim 2, characterized in that: The equipment grounding wire includes a U-shaped welding piece, a grounding wire and a pin-type press buckle; One end of the grounding wire is connected to a pin-type push-button clip and a matching socket-type lock of a branch grounding wire of the cabinet's main grounding wire to connect the equipment grounding to the cabinet's main grounding wire. The other end of the grounding wire is connected to the test equipment grounding column or grounding screw through a U-shaped welding piece.

4. The cabinet grounding device for a satellite standardized test system according to claim 1, characterized in that: The inter-cabinet ground wire comprises a ring welding piece, a grounding wire and a press-type buckle; One end of the inter-cabinet ground wire is welded with a ring-shaped welding piece to realize the connection between the ground wire and the cabinet grounding column when the inter-cabinet ground wire is cascaded, and the press buckle welded at the other end of the inter-cabinet ground wire realizes the inter-cabinet ground wire cascading and the interconnection between the cabinet ground wire and the grounding pile ground wire.

5. The cabinet grounding device for satellite standardized test system according to claim 1, characterized in that: The grounding wire of the grounding pile includes an annular welding piece, a grounding wire and a jack-type press-type buckle; One end of the grounding wire of the grounding pile is connected to the pin-type push-type buckle of the grounding wire between the cabinets through a socket-type push-type buckle, and the other end of the grounding wire of the grounding pile is welded with a ring welding plate to connect the factory satellite test grounding piles through the nut on the satellite grounding pile.

6. The cabinet grounding device for a satellite standardized test system according to claim 1, characterized in that: The grounding stake comprises a metal rod with threads; One end of the metal rod with a thread is connected to the grounding pile grounding wire, and the other end of the metal rod is buried in the soil below the foundation.

7. The cabinet grounding device for satellite standardized test system according to claim 1, characterized in that: All crimping points and welding points in the cabinet grounding device are insulated and protected by heat shrink tubing.

8. A method for grounding a cabinet of a satellite standardized test system, characterized in that: include: Step S1: fix the annular welding pieces at both ends of the cabinet main grounding wire to the mounting holes on the support column of the test system cabinet and the cabinet grounding column respectively by using bolts, nuts and spring washers; Step S2: The equipment grounding wire is fixed to the equipment in the cabinet through the equipment's grounding screw or grounding column. Each test equipment is fixed with an equipment grounding wire. The grounding wires of all equipment in the cabinet and the branch grounding wires of the cabinet's main grounding wire are connected in sequence from top to bottom through their respective pin-and-socket press-and-clip test equipment to complete the grounding connection of a single test cabinet. By analogy, all equipment in the test cabinet of the satellite standardization test system completes the cabinet internal level grounding. Step S3: sequentially connect the grounding posts at the lower end of a single cabinet to the annular welding piece of the grounding wire between the cabinets; The first test cabinet is only equipped with one inter-cabinet ground wire with a plug-in press-on buckle. The remaining test cabinets are required to be equipped with two inter-cabinet ground wires with a pin and a plug-in press-on buckle. Then, all the test cabinets are connected to the inter-cabinet press-on buckles in order from left to right according to the cabinet layout to complete the cabinet ground wire cascade. Step S4: The last test cabinet is connected to the test system grounding pile grounding wire by pressing the buckle, and the test system grounding pile grounding wire is installed with the test system grounding pile through nuts and spring washers.

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