CN219085056U - Portable 2M cable detects instrument - Google Patents

Abstract

The utility model relates to the technical field of power communication operation, and particularly discloses a portable 2M cable detection tool, which comprises a detection module and a far-end module, wherein the detection module comprises a shell, an ARM single-chip microcomputer, a test signal generator connected with a core wire of a 2M cable to be detected and a return signal detection circuit connected with a shielding layer of the 2M cable to be detected are arranged in the shell, one end of the 2M cable to be detected, which is far away from the detection module, is connected with the far-end module, and the far-end module is used for shorting the core wire and the shielding layer of the 2M cable to be detected; when the input of the return signal detection circuit is at a high level, the output of the return signal detection circuit is at a low level; when the input of the return signal detection circuit is suspended or low level, the output of the return signal detection circuit is high level; the ARM single-chip microcomputer is connected with the test signal generator and the return signal detection circuit and used for controlling the test signal generator to send high level. The portable 2M cable can improve detection efficiency, accuracy and rapidness of fault judgment, and saves manpower, material resources and time.

Description

Portable 2M cable detects instrument

Technical Field

The utility model belongs to the technical field of power communication operation, and particularly relates to a portable 2M cable detection tool.

Background

The 2M signal carries important services such as scheduling, switching, automation, protection and the like, and is an important link in an electric power communication system, wherein a 2M cable channel completes physical connection among services of a transmission data network, and the stability of the 2M cable channel directly determines the stability of a digital link. The improvement of the 2M cable detection efficiency has important significance for the stable and stable operation of the power system, and the high importance of the monitoring class is drawn to the switching-on test work of the daily 2M cable.

At present, the success rate of 2M cable test performed by a monitoring class is not ideal: aiming at a 2M connector of a transmission data network, the traditional testing method adopts a nipper pliers and a universal meter with a buzzing function to carry out manual cooperation test by multiple persons, and has the phenomena of difficult communication, time consumption and labor consumption of operation and maintenance personnel. Aiming at the phenomenon, monitoring class members actively conduct investigation and preparation for improving the primary success rate of 2M cable testing. The situation of the success rate of the 2M cable test at the present stage is investigated and analyzed, a portable detection tool for the 2M cable is developed, the detection efficiency and the accuracy are improved in actual work, manpower, material resources and time are greatly saved, the working efficiency is improved, and the rapidness and the accuracy of fault judgment are improved.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a portable 2M cable detection tool which can improve the detection efficiency, the accuracy and the rapidness of fault judgment and save manpower, material resources and time.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a portable 2M cable detects instrument, includes detection module and far-end module, detection module includes the shell, be provided with ARM singlechip, the test signal generator who is connected with the 2M cable heart yearn that awaits measuring in the shell, the return signal detection circuit who is connected with the 2M cable shielding layer that awaits measuring, the 2M cable that awaits measuring is kept away from detection module one end and is connected with far-end module, far-end module is used for the heart yearn and the shielding layer of the 2M cable that awaits measuring of short circuit.

When the input of the return signal detection circuit is at a high level, the output of the return signal detection circuit is at a low level; when the input of the return signal detection circuit is suspended or low level, the output of the return signal detection circuit is high level; the ARM single-chip microcomputer is connected with the test signal generator and the return signal detection circuit and used for controlling the test signal generator to send high level.

Further, a display screen is arranged on one side wall of the shell, and the display screen is connected with the ARM single-chip microcomputer.

Furthermore, the shell is also provided with a switch key, and the switch key is connected with the ARM single-chip microcomputer.

Further, at least one connector is further arranged in the shell, one end of the connector penetrates through the shell to extend out, and the test signal generator and the return signal detection circuit are connected with the 2M cable to be tested through the connector.

Compared with the prior art, the utility model has the following technical effects:

according to the portable 2M cable detection tool, the ARM single-chip microcomputer is electrically connected with the test signal generator and the return signal detection circuit, the ARM single-chip microcomputer is used for controlling the test signal generator to send high level, and when the input of the detection circuit is high level, the output of the detection circuit is low level; when the input of the return signal detection circuit is suspended or low, the output of the return signal detection circuit is high, and the functions of measuring the cable short circuit and breaking circuit are realized by utilizing the signal feedback returned by the return signal detection circuit, so that the universal meter and the nipper pliers are replaced for testing. The development of the portable 2M cable detection tool can improve the one-time success rate of 2M cable testing from 46.41% to more than 85%. The portable 2M cable detection tool provided by the utility model is only composed of the detection module and the far-end module, and is very convenient to carry.

In the conventional process of performing 2M cable testing, at least 2 people are required to cooperate to perform the testing, and the manual testing is performed by using a nipper pliers and a multimeter pen. The portable 2M cable detection tool replaces the method of pen detection by using tool and instrument nipper pliers and a universal meter in the related technology, and only needs to be connected with the detection module, the 2M cable to be detected and the far-end module when in use, and the whole test process can be operated by a single person, so that the working efficiency is improved to a great extent; meanwhile, the one-time success rate of detecting the 2M cable to be detected is greatly improved, false detection and false judgment caused by manpower and tools are reduced, and the time for detection is shortened. And the detection tool effectively reduces visual errors brought by tools and people in the test, so that the detection efficiency, the accuracy and the rapidness of fault judgment are effectively improved, and the manpower, material resources and time are saved.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a portable 2M cable inspection tool according to the present utility model;

FIG. 2 is a schematic diagram of a return signal detection circuit in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating the working principle of an embodiment of a portable 2M cable detection tool according to the present utility model;

FIG. 4 is a schematic diagram of a remote shorting during testing;

reference numerals illustrate: 1. a remote module; 2. a housing; 3. a switch; 4. a joint; 5. a display screen; 6. and a 2M cable to be tested.

Detailed Description

The details of the utility model are explained in further detail below in connection with fig. 1-3.

The utility model discloses a portable 2M cable detection tool, referring to fig. 1, the detection tool comprises a detection module and a far-end module 1, one end of a 2M cable 6 to be detected is detachably connected with the detection module, the other end of the 2M cable 6 to be detected is detachably connected with the far-end module 1, and the far-end module 1 is used for shorting a core wire and a shielding layer at one end of the far-end detection module of the 2M cable 6 to be detected.

The detection module comprises a shell 2, wherein an ARM single-chip microcomputer, a test signal generator connected with a core wire of a 2M cable 6 to be detected and a return signal detection circuit connected with a shielding layer of the 2M cable 6 to be detected are arranged in the shell 2; the ARM single-chip microcomputer is electrically connected with the test signal generator and the return signal detection circuit and used for controlling the test signal generator to send high level. When the input of the return signal detection circuit is at a high level, the output of the return signal detection circuit is at a low level; when the input of the return signal detection circuit is in a floating state or a low level, the output of the return signal detection circuit is in a high level.

A switch key 3 and a display screen 5 are arranged on one side wall of the shell 2, the switch key 3 and the display screen 5 are both connected with an ARM single-chip microcomputer, and the display screen 5 is an OLED display screen in the example; and still be provided with at least one in the shell 2 and connect 4, connect 4 quantity in this embodiment and be two, connect 4 one end and pass shell 2 and stretch out, test signal generator and return signal detection circuit are connected with 2M cable 6 that await measuring through connecting 4.

As shown in fig. 2, the return signal detection circuit is a darlington tube structure formed by connecting two triodes in series, and an equivalent new triode is formed, and the darlington tube structure is used for amplifying a return signal, wherein com is an inscribed protection diode, and is used for discharging reverse voltage when driving an inductive load such as a relay, and the like, so as to protect the circuit. And the Com is suspended and not connected, and E is a grounding pin. Referring to fig. 2, when the input of the return signal detection circuit is at a high level, Q1 is turned on, so that Q2 is turned on and the output is at a low level; when the input of the return signal detection circuit is in suspension or low level, Q1 is cut off, and Q2 is cut off to output high level. Thus, when the ARM single-chip microcomputer controls the test signal generator to send high level to the core wire of the 2M cable 6 to be tested, the test signal is received by the signal detection circuit through the remote module 1 and the shielding layer of the 2M cable 6 to be tested, and if the return signal detection circuit outputs low level, the core wire and the shielding layer of the 2M cable 6 to be tested are judged to normally work and be conducted; if a high level is output, it indicates that at least one of the core wire and the shielding layer of the 2M cable 6 to be tested is broken.

The utility model relates to a portable 2M cable detection tool, which has the working principle that: as shown in fig. 4, the far-end module is a switch, so as to achieve the short circuit function of the wire core and the shielding layer, and during detection, one end of two 2M cables 6 to be detected is connected with the detection module through two connectors 4 respectively, the other end of the two 2M cables is connected with the far-end module 1, and the far-end module 1 achieves the short circuit between the 2M cables 6 to be detected and the short circuit between the wire core of the 2M cables 6 to be detected and the shielding layer;

the ARM single-chip microcomputer in the detection module is connected with an external power supply through a lead, the switch key 3 is pressed, the ARM single-chip microcomputer is driven to control the test signal generator to send high level for the core wire of one of the 2M cables 6 to be detected, and the ARM single-chip microcomputer processes the signals finally transmitted by the return signal detection circuit and then displays the processed signals on the display screen 5; when the test signal is transmitted to the return signal detection circuit through the far-end module and other 3 wires, if one of the 3 returned signals is detected to be low level, judging that the transmitted wire works normally; if all the received signals are detected as high level, the transmitted line is judged to be broken.

Therefore, the portable 2M cable detection tool replaces the method of pen detection by using tool and instrument nipper pliers and a universal meter in the related technology, and only needs to connect the detection module, the 2M cable 6 to be detected and the remote module 1 when in use, and the whole test process can be operated by a single person, so that the working efficiency is improved to a great extent; meanwhile, the one-time success rate of detecting the 2M cable 6 to be detected is greatly improved, false detection and false judgment caused by manpower and tools are reduced, the time for detection is shortened, and manpower and material resources are effectively saved. And the detection tool effectively reduces visual errors caused by tools and people in the test. Therefore, the detection efficiency, the accuracy and the rapidness of fault judgment are effectively improved, and manpower, material resources and time are saved.

Claims (5)

1. A portable 2M cable testing tool, characterized in that: the detection module comprises a shell (2), wherein an ARM single-chip microcomputer, a test signal generator connected with a core wire of a 2M cable to be detected and a return signal detection circuit connected with a shielding layer of the 2M cable to be detected are arranged in the shell (2), one end of the 2M cable to be detected, which is far away from the detection module, is connected with the far-end module (1), and the far-end module (1) is used for shorting the core wire and the shielding layer of the 2M cable to be detected;

when the input of the return signal detection circuit is at a high level, the output of the return signal detection circuit is at a low level; when the input of the return signal detection circuit is suspended or low level, the output of the return signal detection circuit is high level; the ARM single-chip microcomputer is connected with the test signal generator and the return signal detection circuit and used for controlling the test signal generator to send high level.

2. The portable 2M cable detection tool according to claim 1, wherein a display screen (5) is provided on a side wall of the housing (2), and the display screen (5) is connected with an ARM single-chip microcomputer.

3. A portable 2M cable inspection tool according to claim 2, wherein the display screen (5) is an OLED display screen.

4. A portable 2M cable inspection tool according to any of claims 1-3, wherein the housing (2) is further provided with a switch key (3), the switch key (3) being connected to an ARM single chip microcomputer.

5. A portable 2M cable testing tool according to claim 4, wherein at least one connector (4) is further provided in the housing (2), one end of the connector (4) extends through the housing (2), and the test signal generator and the return signal testing circuit are connected to the 2M cable to be tested via the connector (4).

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