CN210376650U

CN210376650U - Cable testing device

Info

Publication number: CN210376650U
Application number: CN201921189446.8U
Authority: CN
Inventors: 吴艳; 王亮; 古晓波; 王宗庆
Original assignee: Hubei Sanjiang Aerospace Group Hongyang Electromechanical Co Ltd
Current assignee: Hubei Sanjiang Aerospace Group Hongyang Electromechanical Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-21
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to a cable testing device, include: the industrial control host, the direct current power supply, the multi-path analog switch and the adapter cable; the multi-path analog switch comprises more than one data selector, and each data selector comprises a power supply port, a test output port and a test connecting port; the industrial control host is connected with the direct-current power supply and the test output port of each data selector in the multi-path analog switch; the direct current power supply is connected to the power supply port of each data selector in the multi-path analog switch; the test connection port of each data selector in the multi-path analog switch is connected to the tested cable through the adapter cable, so that the efficiency of the cable continuity test is improved.

Description

Cable testing device

Technical Field

The utility model relates to an electric product observes and controls technical field, especially relates to a cable testing arrangement.

Background

The conventional method for testing the electric continuity of the cable is to use a buzzer circuit or a universal meter, the positive end and the negative end of a measuring tool are in contact connection with the head end and the tail end of the cable, and when the measuring tool is conducted, a buzzer is sounded or the resistance value is displayed. Cable test equipment in the market also has automatic tester, can once only insert the tester with all point positions at cable both ends, sets for program equipment and tests automatically, and this equipment test accuracy is high, but the cost is higher, and test time is longer, can't satisfy the demand that has time limit.

Therefore, how to improve the efficiency of the cable continuity test is a technical problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made in order to provide a cable testing device that overcomes or at least partially solves the above problems.

In a first aspect, an embodiment of the present invention provides a cable testing device, including: the industrial control host, the direct current power supply, the multi-path analog switch and the adapter cable;

the multi-path analog switch comprises more than one data selector, and each data selector comprises a power supply port, a test output port and a test connecting port;

the industrial control host is connected with the direct-current power supply and the test output port of each data selector in the multi-path analog switch;

the direct current power supply is connected to the power supply port of each data selector in the multi-path analog switch;

and the test connecting port of each data selector in the multi-path analog switch is connected to a tested cable through a transfer cable.

Further, still include: the direct-current power supply is connected to a power supply port of each data selector in the multi-path analog switch through a first connecting end of the data acquisition card;

and the industrial control host is connected to the test output port of each data selector in the multi-path analog switch through the second connecting end of the data acquisition card.

Furthermore, the multi-channel analog switch is integrated on a circuit board.

Further, still include: a data transmission line and a receiving terminal;

one end of the data transmission line is connected with the industrial control host, and the other end of the data transmission line is connected with the receiving terminal.

Further, the length of the data transmission line is greater than or equal to 200 m.

Further, each data selector adopts any one of the following:

a one-out-of-four data selector, a one-out-of-eight data selector, and a one-out-of-sixteen data selector.

Furthermore, the industrial control host is also connected with a display screen, a keyboard and a mouse.

Further, the length of the patch cable is greater than or equal to 20 m.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the utility model provides a pair of cable testing arrangement, include: the system comprises an industrial control host, a direct-current power supply, a multi-path analog switch and a transfer cable; the industrial control host is connected with a direct-current power supply, and the industrial control host is connected with the test output port of each data selector in the multi-path analog switch; direct current power supply is connected to the power supply port of every data selector in the multichannel analog switch, and this multichannel analog switch's test connector passes through the adaptor cable and is connected to the cable under test, and then can adopt a plurality of interfaces that this multichannel analog switch provided, realizes carrying out the polling test to many cables under test fast, and then has improved the efficiency of cable continuity test.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic structural diagram of a cable testing device in an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an interface of a data selector in the cable testing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the test software main interface and detailed data in an embodiment of the present invention;

fig. 4 shows a schematic structural diagram of 4 IO ports controlling 64 cables under test adopted in the embodiment of the present invention;

fig. 5 shows a schematic structural diagram of the embodiment of the present invention in which 16 data selectors are used on a circuit board.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

An embodiment of the utility model provides a cable testing device, as shown in fig. 1, fig. 2, include: an industrial control host 101, a direct current power supply 102, a multi-path analog switch 103 and a transfer cable 104;

the multi-way analog switch 103 includes more than one data selector, and each data selector includes a power supply port 1031, a test output port 1032, and a test connection port 1033.

The industrial control host 101 is connected with the direct current power supply 102, and the industrial control host 101 is connected with the test output port 1032 of each data selector in the multi-path analog switch 103;

the dc power supply 102 is connected to the power supply port 1031 of each data selector in the multi-way analog switch 103;

the test connection port 1033 of each data selector in the multi-way analog switch 103 is connected to the tested cable through the transfer cable 104.

In a specific implementation process, the industrial personal computer 101 controls the dc power supply 102 to supply power to the multi-way analog switch 103 based on a control instruction, and since the test connection port 1033 of each data selector in the multi-way analog switch 103 is connected to the tested cable through the adapter cable 104, after the multi-way analog switch 103 supplies current to the tested cable, the continuity of the cable can be determined through the signal output from the test output port 1032 of each data selector.

The dc power supply 102 is used to provide a test voltage of a 5V power supply, and the model of the dc power supply is T-40C.

In a specific embodiment, the industrial personal computer 101 is further connected with a display screen, a keyboard and a mouse, so that a user can realize operation and display on the industrial personal computer.

The industrial control host 101, the dc power supply 102, and the multi-channel analog switch with circuit board 103 can be packaged to form a portable testing device, which is connected 104 to the cable to be tested via a patch cable.

The length of the patch cable 104 is greater than or equal to 20m, so that the test equipment can be placed at a position 20m away from the tested cable and can be arranged outside an explosion-proof wall, and an explosion-proof function can be realized.

The industrial control host comprises test software to realize automatic storage of real-time monitored data. Specifically, when the test is completed, the test operation is stopped by clicking the button, so that a test result report is automatically generated, test data playback and query are realized, and the analysis of the test result in the later period is facilitated. Such as the test software main interface and detailed data diagram shown in fig. 3.

And the data table can be further checked in detail, specifically, a button of opening a data file on an operation interface is clicked, a dialog box for selecting the file is popped up, the data file to be checked is selected, the data file is checked, the detailed data is checked, the line number to be checked is input in the data box of line of index, the data file is returned, and the test data of the line number can be presented in a chart form by a chart drawing area. If the on-off condition of a certain line number needs to be checked, the line number is input in the line of index, and the vehicle returns, when the line is broken, the test data (vertical coordinate) of the line is about 0V, the horizontal coordinate is the test time, and the line breaking time of the line can be determined by searching the horizontal coordinate value corresponding to the falling edge of the test data of the line from 5V to 0V.

Specifically, each data selector in the multi-way analog switch 103 may employ any one of a four-out-of-one data selector, an eight-out-of-one data selector, and a sixteen-out-of-one data selector.

The description will be made by taking a one out of sixteen data selector as an example.

The sixteen-out-of-sixteen data selector can adopt a data selector with the model number of CD74HC4067, can divide the data selectors with the model numbers of 4 CD74HC4067 into a group, and then shares a group of control IO ports, thereby realizing the function of controlling 64 tested cables by 4 IO ports. As shown in particular in fig. 4.

Of course, the 4-group structure described above may be adopted, so as to implement the test of 256 cables under test controlled by 16 IO ports.

Thus, the greater the number of data selectors employed, the greater the number of cables under test that can be polled. To the condition that the number of the cables to be tested is large, the data selectors with corresponding numbers are adopted, and the cables to be tested are sequentially connected into the test channels to be subjected to polling test under the control action of the industrial control host, so that the efficiency of testing the continuity of the cables is improved.

The cable testing device further comprises a data acquisition card 105, and the direct current power supply 102 is connected to the power supply port 1031 of each data selector in the multi-way analog switch 103 through a first connection end of the data acquisition card 105. The industrial control host 101 is connected to the test output port 1032 of each data selector in the multi-path analog switch 103 through the second connection terminal of the data acquisition card 105. The data acquisition card is used for dividing the direct current power supply 102 into a plurality of power supply ports, and can integrate one output end of the test output port 1032 of each data selector in the multi-path analog switch 103 to be connected with the industrial control host 101. Therefore, the data acquisition card has the function of integrating the circuit. Specifically, the digital output IO port of the data acquisition card 105 is connected to the address terminal of the control terminal of the multi-channel analog switch, and is used for controlling the multi-channel analog switch to select the current of the tested cable to enter the test channel for on-off test. The analog input channel of the data acquisition card 105 is connected with the common end of the multi-channel analog switch and used for measuring the voltage on the tested cable to judge whether the line is broken, if the voltage is greater than 2.5V, the wire is considered to be in a conducting state, the working state is normal, and if the voltage is less than 2.5V, the line is considered to be broken and to have a fault.

The data acquisition card can be a data acquisition card of NI-USB-6341 type. The data acquisition card can set the sampling frequency to be 0-1000 Hz. The high and low levels of each channel can be collected under the set frequency, and the sampling result is transmitted to the industrial control host in real time.

In a specific embodiment, the multi-way analog switch 103 is disposed on a circuit board, and the circuit board provides a uniform interface for more than one data selector. In the embodiment of the present invention, a data selector using 16 CD74HC4067 models is taken as an example, and is specifically shown in fig. 5.

Besides the above devices, the cable testing apparatus further includes a data transmission line 106 and a receiving terminal 107, the data transmission line 106 may adopt a network cable, and the receiving terminal 107 may adopt an all-in-one machine, a notebook computer, a tablet computer, or the like.

One end of the data transmission line 106 is connected to the industrial personal computer 101, and the other end is connected to the receiving terminal 107.

Specifically, the length of the data transmission line 106 is greater than or equal to 200m, so that the receiving terminal 107 can be placed at a position 200m away from the tested cable to receive the test result in a long distance, thereby avoiding the influence on the test result caused by an accident at the position of the tested cable in the test process.

When the test device is used, firstly, the test device is respectively connected with the receiving terminal and the tested cable through the data transmission line 106 and the adapter cable 104, and the test device and the receiving terminal are started; starting 'cable conduction test' software in test equipment, clicking 'selection configuration file', selecting corresponding form template file, setting 'sampling interval', clicking 'test' button, clicking 'stop' button after waiting for 10s, stopping the test equipment, automatically popping up a test result report, automatically naming and storing, wherein the report comprises two worksheets, the first worksheet lists all tested cables and point positions, a status bar displays test results, a check mark is displayed in a conducting mode, a check mark is displayed in a disconnecting mode, and the second worksheet lists all broken cables and point positions.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A cable testing device, comprising: the industrial control host, the direct current power supply, the multi-path analog switch and the adapter cable;

2. The cable testing apparatus of claim 1, further comprising: the direct-current power supply is connected to a power supply port of each data selector in the multi-path analog switch through a first connecting end of the data acquisition card;

3. The cable test apparatus of claim 1, wherein the multi-way analog switch is integrated on a circuit board.

4. The cable testing apparatus of claim 1, further comprising: a data transmission line and a receiving terminal;

5. The cable test apparatus of claim 4, wherein the data transmission line has a length greater than or equal to 200 m.

6. The cable test apparatus of claim 1, wherein each of the data selectors employs any one of:

7. The cable testing device of claim 1, wherein a display screen, a keyboard and a mouse are further connected to the industrial control host.

8. The cable testing device of claim 1, wherein the patch cable has a length greater than or equal to 20 m.