CN209946216U

CN209946216U - Low-frequency signal interactive cross-linking device

Info

Publication number: CN209946216U
Application number: CN201920448746.7U
Authority: CN
Inventors: 杜洋; 王雷
Original assignee: Xian Aircraft Industry Group Co Ltd
Current assignee: Xian Aircraft Industry Group Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-01-14
Anticipated expiration: 2029-04-03

Abstract

The application provides a mutual cross-linking device of low frequency signal, including base plate and frame, be equipped with many parallel guide rails of interval adjustable along length direction on the base plate, a plurality of wiring modules are installed on the guide rail, form the wiring module matrix, transversely and vertically be equipped with the ranks serial number of wiring module matrix on the base plate, every wiring module can slide and freely dismouting along the guide rail, cross the cable clearing hole of line hole for setting up on the base plate, be equipped with the binding post matrix on the wiring module, be equipped with the ranks serial number of binding post matrix on the wiring module.

Description

Low-frequency signal interactive cross-linking device

Technical Field

The application relates to the technical field of low-frequency signal detection of avionic systems, in particular to an interactive cross-linking device applicable to a low-frequency signal avionic system.

Background

In the prior art, the avionic low-frequency signal interaction adopts a cable butt joint or low-frequency signal adapter cross-linking mode, and the connection mode has the following defects:

a. non-detachable, the degree of difficulty is great to cut apart after system environment construction is accomplished:

usually, a fixed system simulation environment can be used for a long time after construction is completed, but the possibility of moving or moving cannot be eliminated; the low-frequency cross-linking system adopting the traditional method cannot be divided, and great difficulty is brought to relocation.

b. Are not favorable for fault location:

once the cable problem occurs in the low-frequency electronic cross-linking system, the system cable needs to be checked step by step according to design requirements, however, the interaction of the traditional low-frequency electronic signals usually has no redundant interface or special test point for checking, the checking difficulty is high, and the workload is large.

c. The working state of the low-frequency circuit cannot be monitored in real time:

for some specific low-frequency signals such as 429 bus signals, when information such as level values or waveforms in the working state needs to be measured, the measurement cannot be carried out as required due to no redundant monitoring channels in the traditional environment, only the line measurement can be estimated or re-distributed, and the method is time-consuming, labor-consuming and inaccurate.

d. Expansibility is not high, can't adapt to the demand that the cable changes fast:

in the stage of scientific research and production, research and development personnel often need to change a certain point or a certain path of signal in a low-frequency cable to perform repeated testing and comparison, but in the traditional simulation environment, the repeated testing and comparison is very difficult. Once the single cables are arranged in place and bundled into a bundle, one cable or one section of the cable is difficult to select for changing, random switching between any wire harnesses cannot be achieved through cable changing, welding or crimping operation of the cables also needs professional electricians to carry out, workload is increased, and project development progress is delayed.

e. The maintenance cost is high:

conventional cross-linked cables typically use round or rectangular connectors, and if any pin or hole in the connector is damaged, the entire connector may be scrapped, and re-purchasing and replacing a new connector is time consuming and costly, greatly increasing the maintenance cost of the system.

f. Application scenarios are narrow:

the connector has fixed appearance and arrangement mode when being used regardless of a circular connector or a rectangular connector, and any fixed connector can only be specially used for a certain project, has poor universality, cannot be mutually replaced or reused, and cannot adapt to complicated application scenes of a laboratory.

Disclosure of Invention

In order to solve the problems, the application provides a novel low-frequency signal interaction cross-linking device which can replace a circular connector and a rectangular connector in the application of interconnection of avionics systems.

The utility model provides an interactive cross-linking device of low frequency signal, including base plate and frame, be equipped with many parallel guide rails of interval adjustable along length direction on the base plate, a plurality of wiring modules are installed on the guide rail, form the wiring module matrix, transversely and vertically be equipped with the ranks serial number of wiring module matrix on the base plate, every wiring module can follow the guide rail and slide and can freely dismouting, cross the line hole for setting up the cable clearing hole on the base plate, be equipped with the binding post matrix on the wiring module, be equipped with the ranks serial number of binding post matrix on the wiring module.

This application compares in prior art has following beneficial effect:

a) portability: the system simulation environment can be split under any condition, the test site and the simulation environment can be conveniently moved and moved, and the original state can be quickly restored after the environment is moved;

b) the working state of the line can be freely monitored, the fault cable can be quickly positioned and checked, a large amount of labor and material resource cost caused by faults is saved, and the fault diagnosis period is greatly shortened;

c) the expansibility and compatibility are high: the modularization of the cross-linking device can increase or disconnect a certain path of signal at any time according to design requirements, and the development difficulty and cost are reduced;

d) the cost is low: a conventional wiring module only needs dozens of elements and can be reused.

Drawings

FIG. 1 is a schematic diagram of the structure of a junction module using J12B 20-08.

The numbering in the figures illustrates: 1-a substrate; 2-a wiring module; 3-a guide rail; 4-a wire through hole; 5-connecting terminal

Detailed Description

As shown in FIG. 1, taking a 8-hole J12B 20-08 type wiring module as an example, the low-frequency signal interactive cross-linking device comprises a substrate and an outer frame, wherein a plurality of parallel guide rails with adjustable intervals are arranged on the substrate along the length direction, a plurality of wiring modules are arranged on the guide rails to form a wiring module matrix, row and column numbers of the wiring module matrix are transversely and longitudinally arranged on the substrate, each wiring module can slide along the guide rails and can be freely disassembled and assembled, a wire passing hole is a cable passing hole arranged on the substrate, a wiring terminal matrix is arranged on the wiring module, and row and column numbers of the wiring terminal matrix are arranged on the wiring module.

In this example, the terminal of the junction block is divided into two left and right rows of 4 holes, with the holes in the same row communicating with each other. The left column is identified by a, b, c, d, and the right column by e, f, g, h.

The same type of signal or differential signal is typically distributed on a module for subsequent observation and troubleshooting by labeling the associated cables in the wiring design file with reference numbers in the matrix of rows and columns of wiring modules in the substrate, such as a 1-a, a 1-b, etc. Such as a 1-a and a 1-e, may be assigned as bus signal 429+ and bus signal 429-, respectively. Therefore, the interface relation is segmented according to the original wiring relation, for example, the X end of the original X finished product to the Y end of the original Y finished product can be segmented into the X end to the A1-a, and the Y end to the A1-b, so that after the two sections of cables are connected, the original X end and the original Y end are communicated, and the rest cables in the system are analogized.

In the wiring module matrix on the substrate, a wire passing hole is arranged every other small section between rows and columns, the cable is connected to an interface of the airborne equipment through the wire passing hole and laid on the back of the substrate, the whole wiring interface is neat and uniform, the appearance is attractive and elegant, and the test, troubleshooting and repair of airborne finished products are facilitated.

The application is applied to an avionic test monitoring platform of a certain key machine type, and the production efficiency is greatly improved. The application shows that the low-frequency signal interactive cross-linking device has high stability, good expansibility and portability, and can be widely applied to other related electronic test systems.

Claims

1. The utility model provides an interactive cross-linking device of low frequency signal, including base plate and frame, be equipped with many parallel guide rails of interval adjustable along length direction on its characterized in that base plate, a plurality of wiring modules are installed on the guide rail, form the wiring module matrix, transversely and vertically be equipped with the ranks serial number of wiring module matrix on the base plate, every wiring module can slide and freely dismouting along the guide rail, cross the line hole for setting up the cable clearing hole on the base plate, be equipped with the binding post matrix on the wiring module, be equipped with the ranks serial number of binding post matrix on the wiring module.