CN211180158U

CN211180158U - Aviation connector cable testing device

Info

Publication number: CN211180158U
Application number: CN201921728991.XU
Authority: CN
Inventors: 张学东; 袁小兵; 曹之科; 余兵; 郭照新; 李潮; 员天佑; 刘金; 周小伟; 虢仲平
Original assignee: COMPUTER APPLICATION RESEARCH INST CHINA ACADEMY OF ENGINEERING PHYSICS
Current assignee: COMPUTER APPLICATION RESEARCH INST CHINA ACADEMY OF ENGINEERING PHYSICS
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-08-04
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses an aviation connector cable testing arrangement, include: a cable tester; the network adapter is provided with a resistor network consisting of a plurality of terminal resistors; an aviation plug-in component to be detected; one end of the aviation plug-in component is connected to a network adapter through a resistance network, and the other end of the aviation plug-in component enters a cable tester through a cable adapter; the cable tester switches through the switch matrix group on the cable tester, and sequentially measures the resistance values between different pins at two ends of the cable in the aviation plug-in assembly. The utility model provides an aviation connector cable testing arrangement, the corresponding interface of the aviation connector one end of waiting to detect is passed through the selection network adapter and is inserted, and one end then gets into the cable tester body through the cable adapter in addition, further through the switching of switch matrix on the cable tester, measures the resistance value between the different stitch in cable intergroup both ends in proper order to confirm the corresponding relation of different array feet.

Description

Aviation connector cable testing device

Technical Field

The utility model relates to an equipment that uses under cable test condition. More specifically, the utility model relates to a testing arrangement for use under to military aviation connector cable subassembly test condition.

Background

The VDV multimedia cable tester such as IDEA L is provided with three test ports of RJ11/12, RJ45 and F-type coaxial cables, so that technicians and installers can quickly change between different test environments and applications, and the same tester is used for measuring the connection conditions of various types of cables such as Voice (Voice), Data (Data) and Video (Video), but the VDV multimedia cable tester cannot meet the test requirements of 60-core cables of aviation connectors.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

The utility model discloses still another purpose provides an aviation connector cable testing arrangement, and the aviation connector one end that waits to detect is through selecting the corresponding interface of network adapter to insert, and one end then gets into the cable tester body through the cable adapter in addition, further through the switching of switch matrix on the cable tester, measures the resistance value between the different stitches in cable intergroup both ends in proper order to confirm the corresponding relation of different array feet.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an aviation connector cable testing device, including:

a cable tester;

the network adapter is provided with a resistor network consisting of a plurality of terminal resistors;

an aviation plug-in component to be detected;

one end of the aviation plug-in component is connected to a network adapter through a resistance network, and the other end of the aviation plug-in component enters a cable tester through a cable adapter;

the cable tester switches through the switch matrix group on the cable tester, and sequentially measures the resistance values between different pins at two ends of the cable in the aviation plug-in component so as to determine the corresponding relation of the different pins and further determine whether the pins on the aviation plug-in component are misconnected.

Preferably, the switch matrix group is configured to include a horizontal switch matrix and a vertical switch matrix matched with the horizontal switch matrix;

wherein the horizontal switch matrix and the vertical switch matrix are each configured to include at least 4 electronic switches to provide 64 cable test channels, respectively, for connection with termination resistors adapted for each of the network adapters;

the driving circuit types of the horizontal switch matrix and the vertical switch matrix are respectively configured to adopt U L N2804L W so as to respectively provide horizontal gating signals and vertical gating signals for the horizontal switch matrix and the vertical switch matrix.

Preferably, the driving circuit selects one channel from the horizontal switch matrix component to access a first port in the network adapter terminal group, selects another channel from the vertical switch matrix to access a second port in the network adapter terminal group, and forms a 0.5mA current loop through a terminal resistor between the first port and the second port, and the current loop is provided with an I/V conversion loop for measuring a corresponding voltage value.

Preferably, the cable tester is provided with a central processing unit matched with the switch matrix group;

the model of the central processing unit is configured to adopt any one of C8051F340, C8051F341, C8051F344 and C8051F 345.

Preferably, the resistor network is configured as a termination resistor matched with 60 ports;

the initial resistance value of each terminal resistor on the resistor network is 50 omega, and the terminal resistors are arranged in a superposition state by a base number of 50 omega.

Preferably, the current loop is configured to generate a 3.3V regulated power supply by using an AS1117 chip and generate a 0.5mA constant current source by using an XTR115 chip.

Preferably, wherein the I/V conversion circuit is configured to include:

the output end of the current loop is connected to the voltage follower access end and is connected to the MCU through an AD0 port of the voltage follower;

and a first voltage comparator and a second voltage comparator which are respectively formed by L M493 and L M393 and are respectively connected between the voltage followers so as to respectively output corresponding open circuit signals JUS _ H and short circuit signals JUS _ L.

Preferably, the driving circuit of the horizontal switch matrix gates each 4067 chip of the horizontal switch matrix through T-CS1, T-CS2, T-CS3 and T-CS pins corresponding to the U L N2804L W chips, and performs channel selection on the gated horizontal switch matrix 4067 chip through T4067-A, T4067-B, T4067-C, T4067-D pins corresponding to the U L N2804L W chips;

the driving circuit of the vertical switch matrix gates each 4067 chip of the vertical switch matrix through pins R-CS1, R-CS2, R-CS3 and R-CS4 corresponding to U L N2804L W chips, and performs channel selection on the gated vertical switch matrix 4067 chip through pins R4067-A \ R4067-B \ R4067-C \ R4067-D corresponding to U L N2804L W chips.

Preferably, the cable tester is provided with a 66-core connector at one end which is matched with the cable adapter.

The utility model discloses at least, include following beneficial effect: one of which, the utility model discloses in wait to detect aviation connector one end and insert through selecting the corresponding interface of network adapter, one end then gets into the cable tester body through the cable adapter in addition, further through the switching of switch matrix on the cable tester, measures the resistance value between the different stitch in cable intergroup both ends in proper order to confirm the corresponding relation of different array feet, the all cable corresponding relation of a key test, efficiency of software testing can obtain very big promotion, the test and the diagnosis of very convenient on-the-spot diagnosis cable subassembly.

And secondly, the utility model discloses a structural design of each part for it can become a portable cable test equipment of aviation connector cable subassembly.

Thirdly, the utility model relates to a portable cable test equipment of military aviation connector cable subassembly. The cable corresponding relation of the aviation connector cable assembly can be measured, functions such as display, storage and the like can be achieved through the display screen, the PC and the like arranged on the cable corresponding relation, and testing and fault location of the aviation connector cable assembly by a user are facilitated.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a structural connection block diagram of a cable testing device according to an embodiment of the present invention;

fig. 2 is a schematic view of a system configuration of a cable tester according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a resistor network in a network adapter according to another embodiment of the present invention;

FIG. 4 is a schematic block diagram of a cable tester according to another embodiment of the present invention;

fig. 5 is a schematic diagram of a pin of a cpu according to another embodiment of the present invention;

fig. 6 is a schematic diagram of a partial layout structure of a resistor network in a network adapter according to another embodiment of the present invention;

fig. 7 is a schematic diagram of another layout structure of a resistor network in a network adapter according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a 0.5mA current loop design according to another embodiment of the present invention;

FIG. 9 is a schematic diagram of an I/V conversion circuit according to another embodiment of the present invention;

fig. 10 is a schematic diagram of an electronic switch network formed by 4067 chip sets according to another embodiment of the present invention;

fig. 11 is a schematic diagram of a driving circuit in a switch matrix according to another embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Fig. 1-2 and 4 show an implementation form of an aviation connector cable testing device according to the present invention, which includes:

the cable tester 1 is used for a cable assembly of a military aviation connector, one end of the cable assembly can be directly connected with a corresponding interface with a terminal resistance network adapter, the other end of the cable assembly is connected into the cable tester through a cable adapter for aviation insertion, and further the cable tester can be provided with a corresponding display 10, a keyboard 11 and a PC 12, so that the corresponding relation of cables of the cable assembly of the aviation connector can be measured, displayed and stored;

the network adapter 2 is provided with a resistor network 5 consisting of a plurality of terminal resistors 4, the resistor network 5 is integrated in the network adapter through the terminal resistors 4, and the aviation patch module is connected to the network adapter through a GJB598 connector 8;

the aviation connector assembly 3 to be detected is provided with a maximum 64-core cable connection detection;

one end of the aviation patch module is connected to a network adapter through a resistance network, the other end of the aviation patch module enters a cable tester through a cable adapter 6, and the cable (aviation) adapter is connected to the aviation patch module through a GJB598 connector 9;

the cable tester switches and passes through the switch matrix group 7 on the cable tester to form a complete cable test loop with the tested cable assembly, sequentially measures the resistance values between different pins at two ends of the cable in the aviation plug-in assembly, so as to determine the corresponding relationship of different pins and further determine whether the pins on the aviation connector assembly are misconnected, in the scheme, a multi-channel test loop is formed by a cable tester, a cable assembly on a tested plug-in assembly and a network adapter with a terminal resistor, and then whether the cable connection with the aviation connector has misconnection or not is tested and detected to realize the corresponding relation of all cables of the aviation connector tested by one key, the testing efficiency can be greatly improved, the testing and diagnosis of the cable assembly on the spot are very convenient, and the testing and fault location of the cable assembly of the aviation connector by a user are convenient.

In another example, the switch matrix group is configured to include a horizontal switch matrix 13 and a vertical switch matrix 14 cooperating therewith;

the horizontal switch matrix and the vertical switch matrix are both configured to include at least 4 electronic switches, the types of the electronic switches can be set to use 4067

chip sets

15 and 16, that is, the horizontal switch matrix is formed by the electronic switches 4067

chip set

1, 4067

chip set

2, 4067

chip set

3 and 4067 chip set 4 and is connected with each adaptive terminal resistor of the network resistor in the network adapter, the electronic switches 4067

chip set

5, 4067

chip set

6, 4067

chip set

7 and 4067 chip set 8 form the vertical switch matrix and are connected with each adaptive terminal resistor of the network resistor in the network adapter, the horizontal switch matrix is composed of four 4067 chip sets, and each chip has 16 channels. The vertical switch matrix is composed of four 4067 chip sets, each chip has 16 channels, and an electronic switch network composed of a horizontal switch matrix 4067 chip and a vertical switch matrix 4067 chip is shown in fig. 2, wherein T4067-A, T4067-B, T4067-C, T4067-D: controlling the gating channel of the horizontal switch matrix 4067 chip; T-CS 1: gating a horizontal switch matrix 4067 chip; R4067-A, R4067-B, R4067-C, R4067-D: controlling the gating channel of the vertical switch matrix 4067 chip; R-CS 1: gating the vertical switch matrix 4067 chips; to provide 64 cable test channels, respectively, to connect with each adapted termination resistor in the network adapter;

the driving circuits 17 of the horizontal switch matrix and the vertical switch matrix are respectively configured to adopt U L N2804L W to respectively provide horizontal gating signals and vertical gating signals for the horizontal switch matrix and the vertical switch matrix, the driving circuit adopts U L N2804L W of MOTORO L A company to improve the driving capability of chipset control signals, and the driving circuit is shown in FIG. 8.

As shown in fig. 2, 4 and 10, in another example, the driving circuit selects one channel from the horizontal switch matrix component to access the first port a of the network adapter terminal group, and selects another channel from the vertical switch matrix to access the second port b of the network adapter terminal group, so as to form a 0.5mA current loop 17 through the terminal resistance between the first port a and the second port b, and the current loop is provided with an I/V conversion loop 18 for measuring the corresponding voltage value, and the current loop is powered by a 0.5mA current source, and the voltage value Uab of the loop is measured through the I/V conversion loop, so as to obtain the resistance Rab between the ports a and b of the network adapter, where Rab is Uab/0.5 mA;

the resistance Rac between the ports a and c of the matcher which is the terminal resistance network can be obtained by the same principle; b. c, resistance values Rbc between, according to:

Rab＝Ra+Rb；

Rac＝Ra+Rc；

Rbc＝Rb+Rc；

obtaining:

Ra＝(Rab+Rac-Rcb)/2；

Rb＝Rab-Ra；

Rc＝Rac-Ra；

and determining the port number of the corresponding terminal resistor network adapter according to the resistance values of Ra, Rb and Rc. The resistance values of the port 1(IO1) to the port 60(IO60) of the terminal resistor network adapter are 50 omega to 3K omega in sequence. The port numbers IOa, IOb and IOc corresponding to Ra, Rb and Rc are as follows:

IOa＝Ra/50；

IOb＝Rb/50；

IOc＝Rc/50；

the port number Ta of the sending end of the cable tester body is controlled by the gating signal of the electronic switch matrix; and obtaining the corresponding receiving end port numbers IOb and IOc of at least two loops by sequentially selecting the vertical switch matrix. Thus obtaining the corresponding relation of Ta to IOa, Tb to IOb and Tc to IOc and obtaining the corresponding relation of the two end ports of the cable assembly. In actual test, at the sending end of the cable tester body, the corresponding relation of the two end ports of the cable assembly is tested in sequence from 1 to 60, as shown in the following table.

Table 1: test result of cable tester body

In the scheme, as shown in the working principle of the simplified cable instrument in fig. 4, a 0.5mA constant current source is loaded on a sending end port number Ta through a horizontal gating signal, corresponding receiving end port numbers IOb and IOc of at least two loops are obtained through sequentially selecting a vertical switch matrix, so that the corresponding relations of Ta to IOa, Tb to IOb and Tc to IOc are obtained, the corresponding relations of two end ports of a cable assembly are obtained, and whether the cable is misconnected or not is detected.

As shown in fig. 3 and 5, in another example, a central processing unit 19 matched with the switch matrix group is arranged on the cable tester, and the switch matrix module controls the accessed terminal module according to a control instruction issued by the central processing unit;

the type of the central processing unit is configured to be any one of C8051F340, C8051F341, C8051F344 and C8051F345, the central processing unit is responsible for managing the communication module, driving the switch matrix, receiving the voltage signal and calculating the test result, and C8051F34x (C8051F340/C8051F341/C8051F344/C8051F345) of Silicon L abs company is adopted.

6-7, in another example, the resistor network is configured as a termination resistor that mates with 60 ports;

the initial resistance value of each terminal resistor on the resistor network is 50 omega, the terminal resistors are arranged in a superposition state by a base number of 50 omega, each terminal resistor can be obtained by connecting a plurality of resistors in series in order to match the resistance value, and the resistance values of the terminal resistor network adapter are respectively matched to be 50 omega-3K omega in sequence under the condition that the resistors are matched with the ports 1(IO1) -60 (IO60), so that the tester passes through the resistance value of each terminal through a loop formed by a switch matrix.

In another example, AS shown in fig. 8, the current loop is configured to generate a 3.3V regulated power supply using the AS1117 chip, and generate a 0.5mA constant current source through the XTR115 chip, which is used to detect the resistance value between the terminals in the loop by the current loop finally generating the 0.5mA constant current source.

As shown in fig. 9, in another example, the I/V conversion loop is configured to include:

the circuit comprises a first voltage comparator and a second voltage comparator which are respectively formed by L M493 and L M393 and are respectively connected between voltage followers to respectively output corresponding open circuit signals JUS _ H and short circuit signals JUS _ L, wherein in the I/V conversion circuit, the input signal of the I/V conversion circuit is the output port of a 0.5mA current source, and the output signals are respectively the voltage of an AD 0: 0.5mA current source loop, the open circuit output of the JUS _ H:0.5mA current source loop, the short circuit output of the JUS _ L: 0.5mA current source loop, the hardware principle of the circuit matched with the current loop is that the voltage enters the I/V conversion circuit through the output port of the 0.5mA current source, enters the voltage followers formed by 2T L C2252R and is output to an MCU through an AD0 port to obtain the voltage value of the 0.5mA current source loop, and the line resistance is further calculated;

when the 0.5mA current source loop is broken, the voltage of the 0.5mA current source loop has the maximum value, and a broken signal JUS _ H is directly output through a voltage comparator formed by L M493.

When the 0.5mA current source loop is in short circuit, the voltage of the 0.5mA current source loop has the minimum value, and a short-circuit signal JUS _ L is directly output through a voltage comparator formed by L M493, so that the detection and judgment of the short circuit and the open circuit of the connector are realized.

As shown in FIG. 11, in another example, the driving circuit of the horizontal switch matrix gates each 4067 chip of the horizontal switch matrix through the T-CS1, T-CS2, T-CS3 and T-CS pins corresponding to the U L N2804L W chip, and performs channel selection on the gated horizontal switch matrix 4067 chip through the T4067-A, T4067-B, T4067-C, T4067-D pins corresponding to the U L N2804L W chip;

In another example, as shown in fig. 1, the cable tester is provided with a 66-core connector 20 at one end matched with the cable adapter, in this scheme, the aviation plug (cable) adapter converts a high-density 66-core connector (J30JK66TJ L) on the tester body into an aviation connector model corresponding to the tested cable assembly, and the network adapter selects a corresponding model according to the aviation connector model corresponding to the tested cable assembly and forms a multi-channel test loop through a resistor network integrated in the network adapter.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, the proper replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the aerial connector cable test device of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. An aviation connector cable testing arrangement, its characterized in that includes:

a cable tester;

an aviation plug-in component to be detected;

2. The aerial connector cable testing device of claim 1, wherein the set of switch matrices is configured to include a horizontal switch matrix and a vertical switch matrix mated thereto;

3. The aircraft connector cable testing device according to claim 2, wherein the driving circuit selects one channel from the horizontal switch matrix assembly to access a first port of the network adapter terminal group and selects another channel from the vertical switch matrix to access a second port of the network adapter terminal group, a 0.5mA current loop is formed through a terminal resistor between the first port and the second port, and an I/V conversion loop for measuring a corresponding voltage value is arranged on the current loop.

4. The aircraft connector cable testing device according to claim 1, wherein a central processing unit matched with the switch matrix group is arranged on the cable tester;

5. The aircraft connector cable testing device of claim 3, wherein the resistor network is configured as a termination resistor that mates with 60 ports;

6. The aerial connector cable testing device of claim 3, wherein the current loop is configured to generate a 3.3V regulated power supply using an AS1117 chip and a 0.5mA constant current source via an XTR115 chip.

7. The aerial connector cable testing device of claim 3, wherein the I/V switching loop is configured to include:

8. The aircraft connector cable testing device of claim 2, wherein the driving circuit of the horizontal switch matrix gates each 4067 chip of the horizontal switch matrix through the T-CS1, T-CS2, T-CS3, T-CS pins corresponding to the U L N2804L W chips and performs channel selection on the gated horizontal switch matrix 4067 chip through the T4067-A, T4067-B, T4067-C, T4067-D pins corresponding to the U L N2804L W chips;

9. An aerospace connector cable testing device according to claim 3, wherein the cable tester is provided with a 66-core connector at an end for mating with a cable adaptor.