Avionics test bench cable exchange device

Abstract

A cable exchange device for an avionics test bench, which is used for connecting cables in an avionics test of an aircraft, the cable exchange device for the avionics test bench is formed by connecting a plurality of cable management cabinets side by side, and each cable management cabinet comprises: a cabinet main body which is configured as a main body part of the cable management cabinet and accommodates each component; a front panel fixedly mounted on a front surface of the cabinet main body and including a plurality of front separation assemblies arranged side by side with each other; a rear panel fixedly mounted on a rear surface of the cabinet main body and including a plurality of rear separation assemblies arranged side by side with each other; and a plurality of cabling channels provided in the cabinet main body for the front panel and the rear panel, the cabling channels allowing cables to be laid therein, the front panel and the rear panel being configured as units independent of each other. By means of the avionics test bench cable exchange device, the junction stability of test cables can be improved, and the requirement for frequent replacement of test bench cables of an avionics system is met.

Description

Technical Field

[0001] The present invention relates to an avionics test bench cable exchange device, and more particularly to an avionics test bench cable exchange device capable of easily completing cable change operations during an avionics test process, belonging to the technical field of aircraft avionics test facilities. Background Art

[0002] The avionics systems of large civil aircraft are highly complex, with complicated connections. The connections for test cables within these systems are complex and require adjustments based on changes in the connections between test pieces. Generally speaking, during the entire lifecycle of a civil aircraft's avionics system testing, the number of cable changes on the test bench can reach tens of thousands. Therefore, there is a need for a cable replacement device for avionics system test benches that facilitates these changes.

[0003] At present, the design of the cable exchange device of the aircraft avionics system test bench is mainly based on existing mature connectors, system division of the connectors and the use of wire-wrap pins to complete signal distribution, thereby guiding the test equipment through the wiring system and the avionics integrated test bench to realize data collection, monitoring, stimulation, simulation switching and other actions of each system.

[0004] For example, patent document CN206628680U discloses a signal merging device, which includes a cabinet with a busbar on the side of the cabinet, a plurality of connectors arranged on the panel, and sockets respectively adapted to the cables of the device to be tested or the test device on the connector, and the connector has detachable wire-wrap pins.

[0005] In this signal tandem equipment, the wires are mainly connected by means of a connector socket with wire-wrap pins. However, since the wire-wrap pins are used for reconnection in the avionics tandem system, it is impossible to send multiple signals through a single module, and cable changes become more troublesome.

[0006] In addition, patent document US20140203795A discloses a wiring testing device for an electronic equipment cabinet, in which internal signal wiring is arranged between a first part having a matrix arrangement of inputs and outputs and a second part having inputs and outputs. The test points of the first part and the second part are in contact with each other and connected to the monitoring device, thereby realizing the collection, monitoring and distribution of test signals.

[0007] In this wiring test device, the advantages of the matrix layout are utilized to divide the connection points into two parts, the upper and lower parts. The matrix layout of the first part shows the diversity of the signal test points, and the second part reflects the characteristics of the input and output internal signal wiring. However, this technical solution cannot achieve signal distribution and convenient wiring.

[0008] Furthermore, as mentioned above, the current aircraft avionics system test bench cable exchange device (cable management system) is designed to connect signals by winding wires around pins. This leads to signal instability due to loose wire windings. In particular, when the cable connection of the test system changes, it is necessary to pull out the original pins and find a more complex bundle of wires to remake the cables. This operation becomes extremely complicated and tedious, and is prone to errors. This design method generates a large workload.

[0009] Moreover, since the connector pins are arranged according to the EDAC pins, the pins become extremely dense, which results in a small number of jacks becoming unusable when there are too many pins in some connectors, that is, the connector cannot be fully used, resulting in a waste of resources, and the pins become prone to oxidation and rust.

[0010] In view of the above-mentioned deficiencies in the existing technology, in order to improve the test efficiency during the avionics test process, it is necessary to provide an avionics test bench cable switching device with stable and reliable signal transmission, simple and accurate cable modification, clear system division, and high resource utilization. Summary of the Invention

[0011] The present disclosure is made to solve the above technical problems, and its purpose is to provide an avionics test bench cable switching device, which can improve the stability of test cable connection and easily complete the cable change operation.

[0012] In order to achieve the purpose of the present disclosure, an avionics test bench cable exchange device is provided for connecting cables during avionics testing of an aircraft. The avionics test bench cable exchange device is composed of multiple cable management cabinets connected side by side, and each of the multiple cable management cabinets includes: a cabinet body, which constitutes the main part of the cable management cabinet and stores various components; a front panel, which is fixedly installed on the front surface of the cabinet body and includes multiple front separation components arranged side by side, and multiple aviation plug females supporting the access of wire harness male sockets are arranged on the backs of the multiple front separation components; a rear panel, which is fixedly installed on the rear surface of the cabinet body and includes multiple rear separation components arranged side by side; and a plurality of wiring troughs are provided in the cabinet body for the front panel and the rear panel, and are used for laying the cables, and the front panel and the rear panel are constituted as independent units.

[0013] According to the above-described structure, by separately setting up the front panel and the rear panel and allocating the front panel area according to the onboard system, a modular design of the system can be achieved, a flexible and simple integration method can be achieved, and the connection relationship between systems can be easily managed and modified.

[0014] Preferably, buckle portions that can engage with each other are provided on surfaces of the plurality of cable management cabinets that face each other.

[0015] According to the above-described structure, by providing the buckle portion, a plurality of cable management cabinets can be formed into a whole, thereby facilitating the transportation of the avionics test bench cable exchange device to a location where a test is required.

[0016] Preferably, a plurality of fixing ribs are provided in the cabinet body, and the plurality of fixing ribs are fastened to the cabinet body by fixing members, and are used for mounting and fixing the front panel and the rear panel.

[0017] According to the above structure, the fixing ribs can not only separate the front panel and the rear panel into independent units, thereby facilitating the connection of different types of cables, but also improve the installation strength of the front panel and the rear panel, thereby improving the overall structural stability of the device.

[0018] Preferably, each of the plurality of front separation assemblies includes a plurality of front wiring modules, each of the plurality of rear separation assemblies includes a plurality of rear wiring modules, and the structures of the front wiring modules and the rear wiring modules are different from each other.

[0019] According to the above-described structure, by designing the front wiring module and the rear wiring module into different structural forms, the connection jacks of different system modules are different from each other, which can realize the wiring of cables of different types, thereby making full use of resources while meeting resource requirements.

[0020] Preferably, mounting holes are provided on both sides of the plurality of front separation components and the plurality of rear separation components, and two vertical mounting rails are provided on the front and rear sides of the cabinet body, on which a plurality of mounting holes are evenly distributed.

[0021] According to the above structure, by installing the guide rail on the cabinet body and adjusting the position up and down, multiple front separation components and multiple above-mentioned rear separation components can be formed into a whole to form the front panel and the rear panel, thereby improving the overall structural strength.

[0022] Preferably, the plurality of wiring troughs are provided between the plurality of front separation components and between the plurality of rear separation components.

[0023] Preferably, the wiring trough includes a trough bottom plate, trough side teeth and a trough cover plate, respectively. The trough bottom plate is arranged at the bottom of the wiring trough, a plurality of trough side teeth are erected from the trough bottom plate and are spaced apart from each other, and the trough cover plate is arranged at the top of the wiring trough opposite to the trough bottom plate.

[0024] According to the above structure, the cables can be laid flexibly, which is beneficial to the heat dissipation of the cables during operation. It can also be convenient for operators to observe the cable arrangement in the cable trough and facilitate cable maintenance.

[0025] Preferably, the above-mentioned avionics test bench cable exchange device also includes a vertical and horizontal plug-in panel, and the above-mentioned vertical and horizontal plug-in panel includes two layers of panels stacked up and down, the upper panel is composed of a plurality of horizontal plug-in units arranged along the longitudinal direction, and the lower panel is composed of a plurality of vertical plug-in units arranged along the transverse direction alternately.

[0026] Preferably, each of the plurality of horizontal plug units is composed of a plurality of conductive plugs conducting in a horizontal direction, and each of the plurality of vertical plug units is composed of a plurality of conductive plugs conducting in a vertical direction.

[0027] According to the above-mentioned structure, the matrix distribution design can help reduce the number of signal leads, and can also realize multiple transmission or reception of signals through the vertical and horizontal double-sided patch panel.

[0028] Preferably, by inserting an external plug between the multi-layer panels, a signal flow from a specific point on one layer of the multi-layer panels to a specific point on another layer of the panels is achieved.

[0029] According to the above configuration, multiple signals located in the same vertical row can be connected by inserting and removing the conductive plug, and signal flow can be achieved between any two specific points. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] With reference to the above purposes, the technical features of the present invention are clearly described in the following technical solutions, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention by way of example without limiting the scope of the inventive concept.

[0031] Figure 1 1 is a schematic diagram showing the overall structure of the cable exchange device of the avionics test bench of the present invention.

[0032] Figure 2 It is an exploded perspective view showing the structure of the avionics test bench cable exchange device of the present invention.

[0033] Figure 3A 1 is a front view showing the front panel of the avionics test bench cable exchange device of the present invention, Figure 3B is a rear view showing the rear panel.

[0034] Figure 4A This is an exploded perspective view showing the front panel components of the avionics test bench cable exchange device of the present invention. Figure 4BIt is an exploded perspective view showing the separation surface of the front panel.

[0035] Figure 5 This is a perspective view showing a wiring socket of the avionics test bench cable exchange device of the present invention.

[0036] Figure 6 This is an exploded perspective view showing the components of the rear panel of the avionics test bench cable exchange device of the present invention.

[0037] Figure 7 It is a schematic diagram showing the three-dimensional structure of the wiring trough of the cable exchange device of the avionics test bench of the present invention.

[0038] Figure 8 This is a front view showing a front panel wiring harness of an avionics test bench cable exchange device according to the present invention.

[0039] Figure 9 1 is a perspective view showing an internal wiring harness of an avionics test bench cable exchange device according to the present invention.

[0040] Figure 10 This is a front view showing the wiring harness arrangement between cabinets of the avionics test bench cable exchange device of the present invention.

[0041] Figure 11A This is a perspective view showing a vertical and horizontal plug-in panel of an avionics test bench cable exchange device according to the present invention. Figure 11B is a top view showing the front of the vertical and horizontal plug-in panel, Figure 11C It is a plan view showing the back side of the horizontal plug-in panel.

[0042] Figure 12A Schematic diagram showing the signal flow of the front and rear panels of the vertical and horizontal plug-in panel of the avionics test bench cable exchange device of the present invention. Figure 12B It is a schematic diagram showing the flow of signals between specific locations. Explanation of symbols

[0043] 1Avionics test bench cable exchange device; 11. Cable management cabinet; 111 cabinet body; 112 front panel; 1121 front separation assembly; 1122 front wiring module; 113 rear panel; 1131 rear separation assembly; 1132 rear wiring module; 114 wiring duct; 1141 trough bottom plate; 1142 groove side teeth; 1143 slot cover; 12 Wiring components 121 banana plug; 1211 banana head handle; 1212 banana plug pins; 122 banana sockets; 1221 banana plug terminal block; 1222 banana plug connection hole; 1223 Banana head fasteners; 13 vertical and horizontal plug-in panels; 131 horizontal plug-in unit; 132 vertical plug-in unit; WB cable; GDL fixed rib. DETAILED DESCRIPTION

[0044] Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

[0045] Although the present invention is described in conjunction with exemplary embodiments, it should be understood that this description is not intended to limit the invention to the exemplary embodiments described below. On the contrary, the present invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims. Overall Structure

[0046] Below, refer to Figure 1 and Figure 2 , the overall structure of the avionics test bench cable exchange device 1 of the present invention is described.

[0047] like Figure 1 As shown, the cable exchange device 1 of the avionics test bench of the present invention is composed of a plurality of cable management cabinets 11 connected in parallel. Figure 1 Three cable management cabinets 11 are shown in the figure, but an appropriate number of cable management cabinets 11 can also be provided according to actual test requirements.

[0048] Furthermore, preferably, buckle portions (not shown) that can engage with each other are provided on surfaces of the plurality of cable management cabinets 11 that face each other.

[0049] Therefore, when the above-mentioned multiple wire management cabinets 11 are arranged side by side to form the avionics test bench cable exchange device 1, the multiple wire management cabinets 11 can be formed into a whole through the snap-fit ​​portion, thereby facilitating the transportation of the avionics test bench cable exchange device 1 to the location where the test needs to be carried out.

[0050] like Figure 2As shown, in the avionics test bench cable exchange device 1 of the present invention, the cable management cabinet 11 mainly includes a cabinet body 111 , a front panel 112 , a rear panel 113 and a cable trough 114 .

[0051] The cabinet body 111 constitutes the main body of the cable management cabinet 11 and is mainly used to store the front panel 112 , the rear panel 113 and the wiring trough 114 .

[0052] The front panel 112 is fixedly mounted on the front surface of the cabinet body 111 in the cable management cabinet 11 and is mainly used to combine differential signals and communication 429 signals.

[0053] The rear panel 113 is fixedly mounted on the rear surface of the cabinet body 111 in the cable management cabinet 11 and is mainly used to connect another form of signal, such as the line group signal, such as the A664 signal.

[0054] The wiring troughs 114 are formed in a substantially grid-like form and are dispersedly installed on the front panel 112 and the rear panel 113 in the cable management cabinet 11 , and are mainly used for laying cables during signal tandem. <Front and rear panels>

[0055] Below, refer to Figures 3A to 6 , the front panel 112 and the rear panel 113 of the avionics test bench cable exchange device 1 of the present invention are described.

[0056] like Figure 3A As shown, the front panel 112 and the rear panel 113 are fixedly mounted on the front surface and the rear surface of the cable management cabinet 11, respectively, and constitute independent units, thereby effectively increasing the number and types of reconnectable cables and improving the applicability of the device.

[0057] In addition, if Figure 3B As shown, a plurality of fixing ribs GDL extending along the width direction of the cable management cabinet 11 are provided between the front panel 112 and the rear panel 113. The fixing ribs GDL are fastened to the cabinet body 111 by screws or the like and are used for installing and fixing the front panel 112 and the rear panel 113.

[0058] The fixing ribs GDL can not only separate the front panel 112 and the rear panel 113 into independent units, facilitating the connection of different types of cables, but also improve the installation strength of the front panel 112 and the rear panel 113, thereby improving the overall structural stability of the device.

[0059] like Figure 4A and Figure 4BAs shown, the front panel 112 of the avionics test bench cable exchange device 1 of the present invention is composed of a plurality of detachable front separation components 1121 and a plurality of front wiring modules 1122 respectively installed on each front separation component 1121 .

[0060] like Figure 4A As shown, the number of the plurality of front separation components 1121 is shown as 7, but the present invention is not limited thereto, and the number of the front separation components 1121 can also be reasonably set according to actual test requirements.

[0061] In addition, preferably, mounting holes are provided on the opposite sides of the above-mentioned multiple front separation components 1121, and the above-mentioned front separation components are installed on the guide rails of the above-mentioned cabinet body through the mounting holes, so that the multiple front separation components 1121 can be formed into a whole to constitute the front panel 112.

[0062] like Figure 4B As shown, each of the plurality of front separation assemblies 1121 includes four independent mounting surfaces, eight front wiring modules 1122 are mounted on each mounting surface, and ten connection contacts are provided on each front wiring module 1122 .

[0063] Therefore, in the avionics test bench cable exchange device 1 of the present invention, a total of 7×8=56 front wiring modules 1122 are installed on the front panel 112, and a total of 56×10=560 connection contacts are provided. This can effectively increase the number of reconnectable cables. In the event of a failure in a wiring module, only the wiring module needs to be replaced, which can effectively improve the availability of the front panel and reduce the costs of production, manufacturing and maintenance.

[0064] like Figure 5 As shown, each wiring assembly 12 constituting the plurality of front wiring modules 1122 mainly includes a banana plug 121 and a banana socket 12. Through the cooperation between the banana plug 121 and the banana socket 12, reconnection between different cables can be achieved.

[0065] The banana plug 121 mainly includes a banana head handle 1211 for the operator to hold and a banana head pin 1212 for being inserted into the banana socket 122. The banana socket 122 mainly includes a banana head terminal block 1221 for being inserted into the banana head pin 1212, a banana head terminal hole 1222 for being inserted into the front separation component 1121, and a banana head fastener 1223 for fastening the banana head terminal block 1221 and the banana head terminal hole 1222 together.

[0066] Similar to the front panel 112 described above, Figure 6As shown, the rear panel 113 is composed of a plurality of detachable rear separation components 1131 and a plurality of rear wiring modules 1132 respectively installed on each rear separation component 1131 .

[0067] The difference from the above-mentioned front panel 112 is that the above-mentioned rear panel 113 and the front panel 112 are independently arranged on the rear surface of the cabinet body 111, and the structural form of the rear wiring module 1132 is different from the front wiring module 1122, so as to realize the wiring of cables of different types.

[0068] By configuring in this manner, the front panel 112 and the rear panel 113 are modularly designed for the wiring system, and the connection jacks of different system modules are different from each other, so that resources can be utilized as much as possible while meeting resource requirements.

[0069] In addition, the avionics test bench cable exchange device 1 of the present invention can improve the stability of test cable connection and meet the demand for frequent cable replacement of the avionics system test bench.

[0070] In previous designs, the signals on the panel were mainly differential signals and communication 429 signals, with low signal frequencies and no high-frequency signals. The wire loss was mainly due to the voltage drop caused by the series resistance of the wire and the signal reflection caused by the uneven impedance during the transmission process.

[0071] Compared with previous designs, the avionics test bench cable exchange device 1 of the present invention adds a conductor connecting the separation surface of the cabinet back panel and the cabinet front panel. The conductor length is 0.5m. According to ΔV = I*R = I*(ρ*l), the resistivity ρ of AWG22 conductor is 52 milliohms / meter. For a 1A signal (usually mA level), the resulting voltage drop loss is 0.026V, which is very small. In addition, the impedance unevenness caused by the separation surface has little impact on low-frequency signals.

[0072] Therefore, the avionics test bench cable switching device 1 of the present invention has little or no impact on signal integrity. <Wireway>

[0073] Below, refer to Figure 7 , the wiring trough 114 of the avionics test bench cable exchange device 1 of the present invention is described.

[0074] like Figure 7 As shown, the cable routing troughs 114 of the avionics test bench cable exchange device 1 of the present invention are provided in plurality at equal intervals along the vertical direction in the cabinet body 111 so as to accommodate cables inserted between different wiring modules.

[0075] The above-mentioned wiring trough 114 mainly includes a trough bottom plate 1141, trough side teeth 1142 and a trough cover plate 1143. The above-mentioned trough bottom plate 1141 is arranged at the bottom of the wiring trough 114 and is formed into a roughly rectangular plate shape. The above-mentioned trough side teeth 1142 are vertically arranged at one end from the trough bottom plate 1141 and are arranged at intervals from each other. The above-mentioned trough cover plate 1143 is arranged at the top of the wiring trough 114 opposite to the trough bottom plate 1141, and is also formed into a roughly rectangular plate shape.

[0076] Furthermore, the wiring groove 114 has a width of “l” and a height of “h”, thereby forming an internal storage space with a volume of “l×h”.

[0077] The specific values ​​of the width l and height h can also be appropriately set according to the number of cables to be stored.

[0078] In addition, by arranging multiple groove side teeth 1142 at intervals from each other, the wiring groove 114 is formed into a hollow grid-like form, which enables flexible wiring during cable laying, is beneficial to the heat dissipation of the cables during operation, and can also facilitate operators to observe the cable arrangement in the cable groove and facilitate cable maintenance.

[0079] In addition, in order to simplify the wiring steps, the design of the present invention also adopts a one-to-many and dual-core wiring harness, which can solve the problem of signal distribution between different system modules and the problem of two high and low routes for one ARINC429 signal. Wiring method

[0080] Below, refer to Figures 8 to 10 , the wiring method of the avionics test bench cable exchange device 1 of the present invention is described.

[0081] As described above, the avionics test bench cable exchange device 1 of the present invention can be flexibly configured to open or merge independent test resources and independent tested system cables through a switching module, and each cable has a corresponding jack, which can divert the wire harness to each jack on the switching module and at the same time gather into a wire harness in each jack on the switching module, and the cable exchanges are interconnected by jumpers.

[0082] like Figure 8 and Figure 9 As shown, by designing the lines in multiple fixed lengths and splitting into multiple paths, the wiring on the front panel can be made neat and beautiful. At the same time, multiple wiring troughs 114 are provided between the switching modules, which can support the fixation and routing of jumpers, thereby achieving flexible configuration of the cable WB and an easy-to-change design.

[0083] In addition, the avionics test bench cable exchange device 1 of the present invention adopts a portable cable management harness design for the wiring design of the front panel.

[0084] As described above, considering that the cables on the front panel are numerous and messy and it is inconvenient to change and check the cables after bundling, the invented avionics test bench cable exchange device 1 is provided with multiple wiring troughs 114 to manage the wiring harness.

[0085] The above-mentioned multiple wiring troughs 114 are laid flat on the front panel 112 in the wiring cabinet 11 and are used for cable laying. In addition, wiring troughs 114 are laid in the up, down, left and right directions of each junction module, that is, the front separation component 1121 or the rear separation component 1131. The wiring trough 114 adopts a hollow design, and a detachable wire cover is provided in the front to facilitate cable changes. A fence-like hollow surface is provided on the side, and the cables can pass through the fence spaces and be laid into the wiring trough in an orderly manner according to the principle of proximity. At the same time, in order to avoid redundant cable lengths, the cable length can be selected according to the routing, for example, it can include lengths of 0.1m, 0.3m, 0.5m, 1m, 2m, etc., and in order to meet the characteristics of one-to-many signal division, specific one-to-two, one-to-three, one-to-four and other cables are designed to be available.

[0086] like Figure 10 As shown, the connection of cables WB between the wire management cabinets 11 can be achieved through the wiring troughs between the wire management cabinets 11. A detachable dedicated wiring trough is provided between the cabinet bodies 111 of the wire management cabinets 11. The wiring trough adopts a concave design to facilitate the layout of the wiring troughs between the wire management cabinets.

[0087] This design not only makes the layout of the front panel wiring harness more regular and compact, and the connections between cabinets more reasonable and neat, but also solves the problem that the wiring harnesses in existing cable management cabinets are difficult to find and change because they are bundled together for routing.

[0088] In addition, for the situation where a signal is sent to multiple signals, the present invention provides a dedicated cable that can send multiple signals at once, which not only facilitates the signal drainage and does not cause signal interference, but also significantly improves work efficiency and reduces work difficulty. <Vertical and horizontal plug-in panel>

[0089] Below, refer to Figures 11A to 12B , the vertical and horizontal pluggable panel 13 of the avionics test bench cable exchange device 1 of the present invention is described.

[0090] In response to the design requirements of the tandem module, the avionics test bench cable exchange device 1 of the present invention proposes a new design solution in the form of a vertical and horizontal double-sided patch panel 13.

[0091] like Figure 11AAs shown, the vertical and horizontal pluggable panel 13 of the avionics test bench cable exchange device 1 of the present invention includes two layers. The first layer located on the front side is composed of a plurality of horizontal pluggable units 131 arranged in the longitudinal direction, and the second layer located on the back side is composed of a plurality of vertical pluggable units 132 arranged in the transverse direction.

[0092] like Figure 11B As shown, the first layer of the above-mentioned vertical and horizontal plug-in panel 13 includes 10 horizontal plug-in units 131 arranged in the vertical direction, and each horizontal plug-in unit 131 is composed of 10 conductive plugs arranged in the horizontal direction and conductive to each other. Therefore, the first layer contains a total of 10×10=100 connection points.

[0093] Likewise, if Figure 11C As shown, the second layer of the vertical and horizontal pluggable panel 13 includes 10 vertical pluggable units 132 arranged in the horizontal direction. Each vertical pluggable unit 132 is composed of 10 conductive plugs arranged in the vertical direction and conductive to each other. Therefore, the second layer contains a total of 10×10=100 connection points.

[0094] Through the structure described above, the vertical and horizontal double-sided patch panel 13 of the present invention can realize multiple transmission or reception of signals. The busbar located on the front of the panel is a horizontally conductive busbar. By plugging and unplugging the conductive plug, the conduction of multiple signals located in the same horizontal row can be achieved. The busbar located on the back of the panel is a vertically conductive busbar. By plugging and unplugging the conductive plug, the conduction of multiple signals located in the same vertical row can be achieved.

[0095] In addition, the matrix distribution design can help reduce the number of signal leads, and the symmetrical matrix distribution of the upper and lower ranges can not only isolate the signal input and output operations separately, but also take into account the modularization of different signal types in the same system.

[0096] For example, Figure 12A As shown, if you want to introduce the signal from a-○10 and lead it out from J-1, then the conductive plug A-1 of the first-layer panel is connected to the conductive plug a-○1 of the second-layer panel through an external plug. When the signal is introduced from the conductive plug a-○10 of the second-layer panel, since the conductive plugs a-○1 to a-○10 of the vertical plug-in unit 132 are conductive to each other, the potentials of these ten holes are consistent with each other and are all in a conductive state. The signal flows through the conductive plug a-○10 along the vertical plug-in unit 132 to the conductive plug a-○1, and flows through the conductive plug A-1 along the horizontal plug-in unit 131 to the conductive plug J-1.

[0097] At this time, the conductive plugs A-1 to A-10 of the panel on the first layer are all in a conductive equipotential state. Therefore, up to 10 signals with the same potential can be drawn from the panel on the first layer without changing its electrical properties, thereby effectively realizing the feature of one send and multiple receive.

[0098] In addition, if Figure 12B As shown, by inserting an external plug at an appropriate position, signal flow from any specific point on the second-layer panel to any specific point on the first-layer panel can be achieved, with a simple structure and easy operation.

[0099] By using the vertical and horizontal double-sided connector board 13 as described above, the wiring harness of the front panel can be simplified, and the signal can be divided into multiple parts. Long and short banana plugs and a small amount of wiring harnesses can be used to achieve the signal distribution, wiring switching and test bench switching required by the avionics test bench, thereby meeting the avionics system test requirements.

[0100] In addition, in the present invention, an example is shown in which the above-mentioned vertical and horizontal double-sided connector board 13 is composed of two layers of panels, but the present invention is not limited to this. The vertical and horizontal double-sided connector board 13 of the present invention can also be composed of multiple layers of panels stacked on each other according to actual usage requirements. (Technical Effect)

[0101] As described above, the cable exchange device of the avionics test bench according to the present invention can realize the modular design of the signal junction panel. The system is divided into a front and rear panel design. The front panel and the rear separation panel can support the independent test resources and test systems of the test bench to access the cable exchange device (cable management cabinet), and open the cables of each test resource and test system in modules and mark each cable. It can also perform cable exchange and junction through multi-line plug-in cable exchange or vertical and horizontal plug-in avionics system cable exchange. The rear panel is used for the junction of line group signals such as A664 signals.

[0102] This design makes each access system an independent unit, with signal switching and aggregation centralized on the front panel for processing. This integration method is not only flexible and simple, with low requirements for the integrated party, but also facilitates the management and modification of the connection relationship between systems.

[0103] In addition, the entire front panel contains 56 junction modules, each module can be distributed with 30-120 connection jacks of different configurations, and in order to facilitate manual plugging and unplugging, the planned area of ​​each jack is about 1 square centimeter. Each panel is fixed with 8 wiring modules by screws, and an integrated box is arranged behind each small panel on the front panel. The interior of the box is mainly used for signal junction. The rear of the integrated box is a separation panel for external interface connection.

[0104] In addition, different numbers of signal junction modules are designed according to the different signal distribution characteristics required. For example, considering the characteristics of the ARI NC429 signal, which has two high and low signals, a combined cable and module is used as the junction panel of the ARI NC429 signal. Two shielded wires are used, one is red A line, representing the high level line, and the other is black B line, representing the low level. The two wires have plugs of the same color.

[0105] Furthermore, the tandem modules are designed as separate, asymmetrical modules, with single-channel designs tailored to the needs of single-channel analog and discrete signals. Furthermore, signal tandems are modularized on a system-by-system basis, tailored to the specific number of signals while maintaining a certain level of redundancy. For example, the hydraulic and avionics systems only require 29 channels, so the system module is designed as a 40-channel module. This ensures sufficient tandem module capacity while simplifying the structure and reducing costs.

[0106] The present invention also designs a vertical and horizontal plug-in cable exchange method for avionics systems, which adopts a vertical and horizontal stacked layout. The cables of one of the two exchange parties are distributed on M equally spaced long longitudinal contact pieces, and the cables of the other party are distributed on N equally spaced long transverse contact pieces, and all the contacts are insulated from each other.

[0107] Through this design, the vertical and horizontal contacts will form M×N intersections, each intersection corresponding to the horizontal and vertical exchange relationship. The upper and lower contact members can be connected by plugging and unplugging the external plug, thereby realizing cable exchange. In addition, this design can complete the cable exchange and configuration without operating the cables.

[0108] Although the structure and operating principles of the present invention have been described above in conjunction with preferred embodiments, those skilled in the art will recognize that the above examples are for illustrative purposes only and do not limit the present invention. The present invention may be modified and varied within the spirit of the claims, and such modifications and variations shall fall within the scope of protection of the present invention.

Claims

1. An avionics test bench cable exchange device (1) for connecting cables (WB) in an avionics test of an aircraft, wherein the avionics test bench cable exchange device (1) is composed of a plurality of cable management cabinets (11) connected in parallel, and is characterized in that: Each of the plurality of cable management cabinets (11) comprises: A cabinet body (111), the cabinet body (111) constitutes the main body of the cable management cabinet (11) and houses various components; A front panel (112), the front panel (112) being fixedly mounted on the front surface of the cabinet body (111) and comprising a plurality of front separation components (1121) arranged side by side; a rear panel (113) fixedly mounted on the rear surface of the cabinet body (111) and comprising a plurality of rear separation components (1131) arranged side by side; and A wiring trough (114), wherein a plurality of wiring troughs (114) are provided in the cabinet body (111) for the front panel (112) and the rear panel (113), and are used for laying the cables (WB). The front panel (112) and the rear panel (113) are constructed as units independent of each other.

2. The avionics test bench cable exchange device (1) according to claim 1, characterized in that: Snap-fit ​​parts that can be engaged with each other are provided on surfaces of the plurality of cable management cabinets (11) that are opposite to each other.

3. The avionics test bench cable exchange device (1) according to claim 1, characterized in that: A plurality of fixing ribs (GDL) are provided in the cabinet body (111). The plurality of fixing ribs (GDL) are fastened to the cabinet body (111) through fixing members and are used for installing and fixing the front panel (112) and the rear panel (113).

4. The avionics test bench cable exchange device (1) according to claim 1, characterized in that: Each of the plurality of front separation assemblies (1121) includes a plurality of front wiring modules (1122), and each of the plurality of rear separation assemblies (1131) includes a plurality of rear wiring modules (1132), and the structural forms of the front wiring modules (1122) and the rear wiring modules (1132) are different from each other.

5. The avionics test bench cable exchange device (1) according to claim 4, characterized in that: Snap portions that can engage with each other are provided on surfaces of the plurality of front separation components (1121) and the plurality of rear separation components (1131) that are opposite to each other.

6. The avionics test bench cable exchange device (1) according to claim 1, characterized in that: The plurality of wiring grooves (114) are arranged between the plurality of front separation components (1121) and between the plurality of rear separation components (1131).

7. The avionics test bench cable exchange device (1) according to claim 6, characterized in that: The wiring trough (114) comprises a trough bottom plate (1141), trough side teeth (1142) and a trough cover plate (1143). The groove bottom plate (1141) is arranged at the bottom of the wiring groove (114), a plurality of groove side teeth (1142) are vertically arranged from the groove bottom plate (1141) and are arranged at intervals from each other, and the groove cover plate (1143) is arranged at the top of the wiring groove (114) opposite to the groove bottom plate (1141).

8. The avionics test bench cable exchange device (1) according to any one of claims 1 to 7, characterized in that: The avionics test bench cable exchange device (1) further includes a vertical and horizontal plug-in panel (13), The vertical and horizontal plug-in type panel (13) comprises multiple layers of panels stacked on each other, wherein each layer of the multi-layer panel is alternately composed of multiple horizontal plug-in units (131) arranged in the vertical direction and multiple vertical plug-in units (132) arranged in the horizontal direction.

9. The avionics test bench cable exchange device (1) according to claim 8, characterized in that: Each of the plurality of transverse plug-in units (131) is composed of a plurality of conducting plugs conducting in a transverse direction, and each of the plurality of longitudinal plug-in units (132) is composed of a plurality of conducting plugs conducting in a longitudinal direction.

10. The avionics test bench cable exchange device (1) according to claim 9, characterized in that: By inserting an external plug between the multi-layer panels, a signal flow from a specific point on one layer of the multi-layer panels to a specific point on another layer of the panels is achieved.

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