CN210835124U

CN210835124U - Cable fault point-fixing instrument

Info

Publication number: CN210835124U
Application number: CN201921421138.3U
Authority: CN
Inventors: 刘新; 苏筱敏; 李苏海; 陈世昊; 冯鸿杰
Original assignee: Wuhan Xunkang Electronic Technology Co ltd
Current assignee: Wuhan Xunkang Electronic Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-23
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a cable fault fixed point appearance, the utility model provides a cable fault fixed point appearance, including collection probe, one end opening setting and inside hollow probe storehouse, with the circuit integration storehouse and the metal connecting rod of connecting can be dismantled to the one end in probe storehouse, be equipped with the tuning fork in the probe storehouse, the one end of metal connecting rod by the other end in probe storehouse stretches into in the probe storehouse, and with the connection can be dismantled to the one end in probe storehouse, just the metal connecting rod stretches into terminal surface in the probe storehouse is connected with the merge end of tuning fork, be equipped with between two branch fork ends of tuning fork and be used for converting vibrations into the wafer of signal of telecommunication, through the vibration signal who gathers the fault point to convert into the audible sound signal of operator, trace cable fault point. The utility model provides a cable fault fixed point appearance has the effect that makes things convenient for the maintainer to look for the cable fault point.

Description

Cable fault point-fixing instrument

Technical Field

The utility model relates to a power grid equipment technical field especially relates to a cable fault fixed point appearance.

Background

In order to ensure the safe and reliable communication of the long-distance communication cable, a direct-buried laying mode is generally adopted, a ground mark is required to be arranged on a circuit direct-buried path under a general condition to prevent the cable from being accidentally damaged in the construction process or find the buried cable when the buried cable is convenient to overhaul, when the buried cable is out of line and has a fault, a test signal is generally input at one end of the cable, and a fault point can be roughly judged according to signal feedback.

SUMMERY OF THE UTILITY MODEL

To the above problems, a cable fault location instrument is provided, which aims to realize the effect of conveniently searching for a cable fault point.

The specific technical scheme is as follows:

a cable fault location instrument comprises an acquisition probe, a probe bin with one end open and hollow inside, a circuit integration bin detachably connected with one end of the probe bin and a metal connecting rod, a tuning fork is arranged in the probe bin, one end of the metal connecting rod extends into the probe bin from the other end of the probe bin, and is detachably connected with one end of the probe bin, the end face of the metal connecting rod extending into the probe bin is connected with the merging end of the tuning fork, a crystal oscillator plate for converting vibration into an electric signal is arranged between the two forked ends of the tuning fork, the other end of the metal connecting rod can be detachably connected with the acquisition probe, and a signal processing circuit for processing the electric signals generated by the crystal oscillator plate is arranged in the circuit integration bin, and the signal processing circuit is electrically connected with the crystal oscillator plate.

The cable fault point fixing instrument is characterized in that a threaded hole is formed in the other end of the metal connecting rod, the collecting probe comprises a round collecting probe capable of increasing the collecting area or a needle-shaped collecting probe capable of increasing the signal collecting intensity, external threads matched with the threaded hole are arranged at one ends of the round collecting probe and the needle-shaped collecting probe, and one end of the round collecting probe or one end of the needle-shaped collecting probe is in threaded connection with the threaded hole.

The beneficial effect of above-mentioned scheme is: when the fault point is searched in the range, the searching range is expanded by using the circular acquisition probe, and after a specific position is found, the needle-shaped acquisition probe is replaced to enhance the intensity of the acquired signal, so that an operator can conveniently find the fault point at the highest speed.

The cable fault locating instrument is further characterized in that the processing circuit comprises a preamplifier, an active band-pass filter, a post-amplifier and a signal output interface, the crystal oscillator plate is electrically connected with the preamplifier, the preamplifier is electrically connected with the active band-pass filter, the active band-pass filter is electrically connected with the post-amplifier, and the post-amplifier is electrically connected with the signal output interface.

The beneficial effect of above-mentioned scheme is: the electric signal generated by the crystal oscillator is amplified for the first time, filtered and amplified for the second time and then is converted into a sound signal which can be heard by an operator through the signal output interface and the external earphone, and the place with the strongest sound is the cable fault point.

The cable fault location instrument also has the characteristic that the preamplifier and the post-amplifier both adopt MAXIM4410 chips.

The beneficial effect of above-mentioned scheme is: the amplifier of the model has small volume and strong function, so that the volume of the pointing instrument is reduced.

The cable fault location instrument further has the characteristic that the active band-pass filter is MAX 275.

The beneficial effect of above-mentioned scheme is: the filter of the model has small volume and strong function, so that the volume of the pointing instrument is reduced.

The cable fault location instrument also has the characteristic that the signal output interface is a TRS interface.

The beneficial effect of above-mentioned scheme is: the interface can be externally connected with an earphone so as to facilitate the handheld work of an operator.

The cable fault location instrument is characterized in that one end of the circuit integration bin, which is far away from the probe bin, is provided with a telescopic rod with adjustable length, and the telescopic rod is in threaded connection with the circuit integration bin.

The beneficial effect of above-mentioned scheme is: in order to fit different heights of different operators.

In conclusion, the scheme has the beneficial effects that:

the utility model provides an among the cable fault fixed point appearance, through the vibration signal who gathers the fault point to convert the audible sound signal of operator, seek to trace cable fault point. The utility model provides a cable fault fixed point appearance has the effect that makes things convenient for the maintainer to look for the cable fault point.

Drawings

FIG. 1 is a schematic view of a front cross-sectional structure of a cable fault location device of the present invention;

fig. 2 is a schematic diagram of the structure of the collecting probe of the present invention.

In the drawings: 1. a probe cabin; 2. a circuit integration bin; 3. a metal connecting rod; 4. a tuning fork; 5. a crystal oscillation piece; 61. a circular acquisition probe; 62. a needle-like acquisition probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be further described with reference to the following specific examples, which should not be construed as limiting the invention.

Fig. 1 is the utility model discloses a cable fault fixed point appearance is just cut open structure schematic diagram, fig. 2 is the utility model discloses a collection probe structure schematic diagram, as shown in fig. 1, fig. 2, the cable fault fixed point appearance that this embodiment provided: including gathering the probe, one end opening sets up and inside hollow probe storehouse 1, can dismantle circuit integration storehouse 2 and the metal connecting rod 3 of being connected with the one end of probe storehouse 1, be equipped with tuning fork 4 in the probe storehouse 1, metal connecting rod 3's one end is stretched into in the probe storehouse 1 by the other end of probe storehouse 1, and can dismantle with the one end of probe storehouse 1 and be connected, and metal connecting rod 3 stretches into terminal surface in the probe storehouse 1 and is connected with tuning fork 4's merger end, be equipped with between two fork ends of tuning fork 4 and be used for converting vibrations into the wafer 5 of the signal of telecommunication, metal connecting rod 3's the other end can be dismantled with gathering the probe and be connected, be equipped with in the circuit integration storehouse 2 and be used for carrying out signal processing's the signal processing circuit with the signal of telecommunication that wafer 5 produced, signal processing circuit is connected with wafer 5 electricity.

In the above embodiment, the other end of the metal connecting rod 3 is provided with a threaded hole, the collecting probe includes a round collecting probe 61 capable of increasing the collecting area or a needle-shaped collecting probe 62 capable of increasing the signal collecting intensity, one end of the round collecting probe 61 and one end of the needle-shaped collecting probe 62 are provided with external threads matched with the threaded hole, and one end of the round collecting probe 61 or one end of the needle-shaped collecting probe 62 are in threaded connection with the threaded hole.

It should be noted that one end of the round-shaped collecting probe 61 and the needle-shaped collecting probe 62 can be screwed into the threaded holes.

In the above embodiment, the processing circuit includes a preamplifier, an active band-pass filter, a post-amplifier and a signal output interface, the wafer 5 is electrically connected to the preamplifier, the preamplifier is electrically connected to the active band-pass filter, the active band-pass filter is electrically connected to the post-amplifier, and the post-amplifier is electrically connected to the signal output interface.

Preferably, the preamplifier and the postamplifier both use MAXIM4410 chips.

Preferably, the active band-pass filter is of the type MAX 275.

Preferably, the signal output interface is a TRS interface.

It should be noted that the signal output interface is electrically connected to an external earphone.

In the above embodiment, the end of the circuit integration bin 2 away from the probe bin 1 is provided with a telescopic rod with adjustable length, and the telescopic rod is in threaded connection with the circuit integration bin 2.

The working principle is as follows: the test signal is transmitted to one end of a fault cable, the test signal can generate a discharging condition after reaching a fault point, the cable can be vibrated due to discharging, the fixed point instrument can collect the vibration, the circular collecting probe 61 is screwed with the metal connecting rod 3, the collecting end moves close to the bottom surface, the vibration signal is transmitted to the tuning fork 4 through the circular collecting probe 61, the tuning fork 4 is vibrated due to the vibration, the crystal oscillator piece 5 is driven to vibrate, the crystal oscillator piece 5 generates an electric signal along with the vibration, the electric signal is amplified once, filtered and amplified and transmitted to the signal output interface for the second time, the sound signal is output through the external earphone, when the sound signal is increased continuously, the situation that the distance from the fault point is closer and closer is closer until the sound signal reaches the.

The above is merely a preferred embodiment of the present invention, and not intended to limit the scope and the range of the present invention, and those skilled in the art should be able to realize that all the equivalent substitutions and obvious changes made by the present invention description should be included in the scope of the present invention.

Claims

1. The utility model provides a cable fault fixed point appearance which characterized in that: comprises a collecting probe, a hollow probe cabin (1) with an opening at one end, a circuit integrated cabin (2) and a metal connecting rod (3) which are detachably connected with one end of the probe cabin (1), a tuning fork (4) is arranged in the probe cabin (1), one end of the metal connecting rod (3) is inserted into the probe cabin (1) from the other end of the probe cabin (1) and is detachably connected with one end of the probe cabin (1), the end surface of the metal connecting rod (3) inserted into the probe cabin (1) is connected with the merging end of the tuning fork (4), a crystal vibration piece (5) for converting vibration into an electric signal is arranged between the two branching ends of the tuning fork (4), the other end of the metal connecting rod (3) can be detachably connected with the collecting probe, a signal processing circuit for processing the electric signal generated by the crystal vibration piece (5) is arranged in the circuit integrated cabin (2), the signal processing circuit is electrically connected with the crystal oscillator plate (5).

2. A cable fault location instrument according to claim 1, wherein: the other end of metal connecting rod (3) is equipped with the screw hole, gather probe (62) including can increase the needle-like collection probe (61) or the increase acquisition signal intensity of gathering the round collection probe (61) of gathering the area, round collection probe (61) with the one end of needle-like collection probe (62) be equipped with the external screw thread of screw hole looks adaptation, just round collection probe (61) or the one end of needle-like collection probe (62) with screw hole threaded connection.

3. A cable fault location instrument according to claim 1, wherein: the processing circuit comprises a preamplifier, an active band-pass filter, a post-amplifier and a signal output interface, wherein the crystal oscillator plate (5) is electrically connected with the preamplifier, the preamplifier is electrically connected with the active band-pass filter, the active band-pass filter is electrically connected with the post-amplifier, and the post-amplifier is electrically connected with the signal output interface.

4. A cable fault location instrument according to claim 3, wherein: the preamplifier and the post-amplifier both adopt MAXIM4410 chips.

5. A cable fault location instrument according to claim 3, wherein: the model of the active band-pass filter is MAX 275.

6. A cable fault location instrument according to claim 3, wherein: the signal output interface is a TRS interface.

7. A cable fault location instrument according to any one of claims 1 to 6, wherein: one end, far away from the probe bin (1), of the circuit integration bin (2) is provided with a telescopic rod with adjustable length, and the telescopic rod is in threaded connection with the circuit integration bin (2).