CN111983389A - A device for multi-core cable pairing and fault detection - Google Patents

Abstract

The invention proposes a multi-core cable pairing and fault detection device, which is used to solve the technical problems such as complicated work, low efficiency, error-prone and inability to judge the abnormal state of the cable in the traditional multi-core cable pairing method. The invention includes a sending device and a receiving device arranged at both ends of the multi-core cable, the sending device includes a control host, and the control host is respectively provided with a power supply, a key switch, an indicator light, a buzzer, a first grounding common terminal and a signal sending device. The wiring unit, the receiving device includes a control slave, and the control slave is respectively provided with a second grounding common terminal and a receiving wiring unit, one end of the receiving wiring unit is connected with the second grounding common terminal, and the other end is connected with the sending connection through a multi-core cable units are connected. The invention realizes that only wiring operation is required during the wiring process. On the one hand, compared with the traditional multimeter short-circuiting wiring, the work efficiency is greatly improved. On the other hand, the device can judge whether the cable core is in a fault state through the indication information.

Description

A device for multi-core cable pairing and fault detection

technical field

The invention relates to the technical field of cable wiring checking, in particular to a multi-core cable pairing and fault detection device.

Background technique

Substation relay protection devices use a large number of multi-core cables in the connection process. Whether it is new station installation and wiring, or fault detection, multi-core cables are often required to be aligned. Multi-core cables are often used in short-distance power transmission and transmission. control signal transmission. With the continuous improvement of the automation level of power equipment, the number of multi-core cables used in the power system has gradually increased, and frequent cable maintenance work such as power transmission and transformation projects, relay protection, etc. has made the cable-to-line and cable fault diagnosis more and more requirements. high. Because the cable distance is long and the number of cores is large, the traditional method of wiring is to use a multimeter to short-circuit the wiring, and it is also necessary to check the number of the cable cores. If other equipment is added for fault diagnosis, the cost will increase, and the fault information cannot be reflected quickly, which affects the work efficiency.

SUMMARY OF THE INVENTION

Aiming at the technical problems such as complicated work, low efficiency, error-prone and inability to judge the abnormal state of the cable in the traditional multi-core cable pairing method, the present invention proposes a multi-core cable pairing and fault detection device, which realizes the online pairing process. On the one hand, the work efficiency is greatly improved compared with the traditional multimeter short-circuiting, on the other hand, the device can judge whether the cable core is in a fault state through the indication information.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a device for multi-core cable pairing and fault detection, comprising a signaling device and a receiving device arranged at both ends of the multi-core cable, and the signaling device includes a control host , the control host is respectively provided with a power supply, a first grounding wiring unit and a sending wiring unit, and the first grounding wiring unit and the sending wiring unit are respectively connected with the power supply; the receiving device includes a control slave, and the control slaves are respectively A second grounding wiring unit and a receiving wiring unit matched with the sending wiring unit are provided, one end of the receiving wiring unit is connected with the second grounding wiring unit, and the other end is connected with the sending wiring unit through a multi-core cable.

The sending wiring units are arranged in parallel with multiple groups, the input ends of the multiple sending wiring units are collectively connected to the power supply, and the output ends are respectively connected to the receiving wiring units.

The signaling wiring unit includes a key switch, a signaling indicator light unit and a signaling terminal. The key switch, the signaling indicator unit and the signaling terminal are connected in series to form a signaling circuit, and the key switch is in phase with the positive pole of the power supply. Connection, the sending terminal is connected to the receiving wiring unit through a multi-core cable.

The signaling indicator unit includes a first shunt resistor and a first light emitting diode, and the first shunt resistor and the first light emitting diode are connected in parallel.

The receiving wiring unit is provided with multiple groups in parallel and is respectively matched with the multiple groups of sending wiring units, the input ends of the multiple receiving wiring units are connected to the sending wiring terminals of the sending wiring unit, and the output ends of the multiple receiving wiring units are collected. Unified connection to the second ground connection unit.

The receiving wiring unit includes a receiving indicator unit and a receiving terminal, the receiving indicator unit and the receiving terminal are connected in series to form a receiving circuit, the receiving indicator unit is connected to the second ground wiring unit, and the receiving terminal is connected with the sending wiring end connected.

The receiving indicator unit includes a second shunt resistor and a second light emitting diode, and the second shunt resistor and the second light emitting diode are connected in parallel.

A signaling prompter is connected in series between the key switch and the positive pole of the power supply, and a receiving prompter is connected in series between the receiving indicator light unit and the second grounding wiring unit, and both the signaling prompter and the receiving prompter are buzzing. device.

The first grounding wiring unit is the first grounding common terminal, one end of the first grounding common terminal is connected to the negative pole of the power supply, and the other end is grounded; the second grounding wiring unit is the second grounding common terminal, and one end of the second grounding common terminal is connected to the receiving prompt device, and the other end is grounded.

The sending terminal, the receiving terminal, one end of the first ground common terminal connected to the power supply, and one end of the second ground common terminal connected to the receiving prompter are all provided with a fast wire clamp.

In the present invention with the above structure, by inserting the wire cores at both ends of the multi-core cable into the fast wire clamps of the sending terminal and the receiving terminal respectively, the wiring work can be started, and in the wiring process, only the wiring is required. Operation, on the one hand, compared with the traditional multimeter short-circuit pairing, the work efficiency is greatly improved; on the other hand, the device can judge whether the cable core is in a fault state through the indication information; The intuitiveness of the computer interaction also improves the accuracy of the wiring; at the same time, the same cable has no sequence requirements for the control host and the control slave plug-in during the operation of the device, which improves the efficiency of the wiring work. The invention has simple structure design, low cost, clear principle and simple operation.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram of the overall circuit structure of the present invention;

2 is a schematic diagram of the internal circuit structure of the control host of the present invention;

3 is a schematic diagram of the internal circuit structure of the control slave of the present invention;

Fig. 4 is the structural schematic diagram of the sending wiring unit of the present invention;

FIG. 5 is a schematic structural diagram of a receiving wiring unit of the present invention.

In the figure, 1 is the control host, 2 is the power supply, 3 is the first grounding wiring unit, 4 is the signaling wiring unit, 41 is the key switch, 421 is the first shunt resistor, 422 is the first light-emitting diode, and 42 is the signaling Indicator unit, 43 is the sending terminal, 5 is the control slave, 6 is the second ground wiring unit, 7 is the receiving wiring unit, 71 is the receiving indicator unit, 711 is the second shunt resistor, 712 is the second light-emitting unit Diode, 72 is a receiving terminal, 8 is a signaling prompter, 9 is a receiving prompter, and 10 is a fast wire carding device.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1, the present invention provides a multi-core cable pairing and fault detection device, including a sending device and a receiving device arranged at both ends of the multi-core cable, and the multi-core cable is usually a single cable It includes a plurality of cable cores, and then the two ends of the multiple cable cores are respectively connected to the sending device and the receiving device to form a line-to-line loop, so as to complete the line-to-line and fault detection process of the cable cores. As shown in FIG. 2 and FIG. 3 , the sending device includes a control host 1, and the receiving device includes a control slave 5. The control host 1 is provided with a power supply 2, a first grounding wiring unit 3 and a sending wiring respectively. Unit 4, the first grounding wiring unit 3 and the sending wiring unit 4 are respectively connected to the power supply 2, and the control slave 5 is respectively provided with a second grounding wiring unit 6 and a receiving wiring unit 7 matched with the sending wiring unit 4 , and one end of the receiving wiring unit 7 is connected to the second ground wiring unit 6, and the other end is connected to the sending wiring unit 4 through a multi-core cable, wherein the power supply 2 is a 12V battery and is placed in the power supply card holder on the control host 1. , the power supply 2 supplies power to the sending wiring unit 4 and the receiving wiring unit 7, and the first ground wiring unit 3 and the second ground wiring unit 6 are both grounded.

Specifically, there are multiple groups of the sending wiring units 4 in parallel. The input ends of the multiple sending wiring units 4 are collectively connected to the power supply 2, and the output ends are respectively connected to the receiving wiring unit 7 through the cable core. The receiving wiring unit 7 is also the same Multiple groups are arranged in parallel and are respectively matched with the multiple groups of sending wiring units 4. The input ends of the multiple receiving wiring units 7 are connected to the sending terminals 43 of the sending wiring unit 4, and the output ends are collectively connected to the second grounding wiring unit. 6. Therefore, it is realized that the sending wiring unit 4 can transmit the power signal to the receiving wiring unit 7 through the cable core, and respectively form a loop through the first ground wiring unit 3 and the second ground wiring unit 6 .

As shown in FIG. 4 and FIG. 5 , the signaling connection unit 4 includes a key switch 41 , a signaling indicator unit 42 and a signaling terminal 43 , a key switch 41 , a signaling indicator unit 42 and a signaling terminal 43 . 43 are connected in series in sequence and form a sending circuit; the receiving wiring unit 7 includes a receiving indicator unit 71 and a receiving terminal 72, the receiving indicator unit 71 and the receiving terminal 72 are connected in series to form a receiving circuit, and the sending terminal 43 passes through multiple terminals. The core cable is connected to the receiving terminal 72 to implement the wiring process. The key switch 41 is connected to the positive pole of the power supply 2, and a signaling prompt 8 is connected in series between the key switch 41 and the positive pole of the power supply 2, and a receiving indicator unit 71 and the second grounding wiring unit 6 are connected in series with a receiving signal. The prompter 9, the sending prompter 8 and the receiving prompter 9 are all buzzers with a voltage of 3-5V and a current of 20mA. Further, the signaling indicator unit 42 includes a first shunt resistor 421 and a first light emitting diode 422, and the first shunt resistor 421 and the first light emitting diode 422 are connected in parallel. The receiving indicator unit 71 includes a second shunt resistor 711 and a second light emitting diode 712, and the second shunt resistor 711 and the second light emitting diode 712 are connected in parallel. In this embodiment, the first light emitting diode 422 and the second light emitting diode 712 are both red light emitting diodes, and the specifications of the first shunt resistor 421 and the second shunt resistor 711 are both 200Ω and 0.2W. When the power signal is turned on, the two buzzers alarm simultaneously, and the first light-emitting diode 422 and the second light-emitting diode 712 light up at the same time. The set first shunt resistor 421 and the second shunt resistor 711 are used to protect the first light emitting diode 422 and the second light emitting diode 712 respectively, so as to ensure the normal operation of the first light emitting diode 422 and the second light emitting diode 712 .

The first ground connection unit 3 is the first ground common terminal, one end of the first ground common terminal is connected to the negative pole of the power supply 2, and the other end is grounded; the second ground connection unit 6 is the second ground common terminal, and one end of the second ground common terminal is connected to the ground. Connect the receiving prompter 9, and the other end is grounded. Since the grounding grid in the substation is connected after the primary equipment in the substation is assembled, the grounding common terminal in the control host and the control slave is connected to the ground grid nearby. When checking the same cable, the control host and the control slave are connected. A passable loop is formed between them. The sending terminal 43, the receiving terminal 72, one end of the first grounding common terminal connected to the power supply 2, and one end of the second grounding common terminal connected to the receiving prompt 9 are all provided with a fast wire clamp 10. Put it into the battery holder, ground the two grounding common ends, and then select the same cable, and insert the cores at both ends of the cable into the fast wire clamps of the sending terminal and the receiving terminal respectively, and then the wiring work can be started. . During the wiring process, only the wiring operation is required. On the one hand, compared with the traditional multimeter short-circuiting wiring, the work efficiency is greatly improved; on the other hand, the device can judge whether the cable core is in a fault state (broken wire or short circuit).

In this embodiment, the control host has 19 key switches S1-S19 in total, 19 shunt resistors R1-R19 in total, 19 light-emitting diodes in D1-D19, 20 fast wire clamps in CZ0-CZ19 and 1 Buzzer HA1, there are 19 shunt resistors R1ˊ-R19ˊ in total, D1ˊ-D19ˊ 19 LEDs, CZ0ˊ-CZ19ˊ 20 fast wire clamps and 1 buzzer HA2 in the control slave. The specific settings and The connection relationship is shown in FIGS. 1 to 3 . Take the circuit where the key switch S1 is located as an example, select a cable and connect it through the fast cable clamps CZ1 and CZ1ˊ. The first ground common terminal and the second ground common terminal are grounded through CZ0 and CZ0′ respectively. The specific circuit conduction mode It is: when the key switch S1 is pressed, the battery outputs the power supply signal and then passes through the positive pole of the power supply +VCC, the buzzer HA1, the key switch S1, the shunt resistor R1, the light-emitting diode D1, the fast clamp CZ1, the cable core, the fast The cable clamp CZ1ˊ, the shunt resistor R1ˊ, the light-emitting diode D1ˊ, the buzzer HA2, and then to the second ground common terminal to form a loop. After the circuit is turned on, the buzzer HA1 and the buzzer HA2 will sound at the same time, and the LED D1 and the LED D1 will light up at the same time. During the wiring process, only the wiring operation is required. On the one hand, compared with the traditional multimeter short-circuiting wiring, the work efficiency is greatly improved; on the other hand, the device can judge whether the cable core is in a fault state through the indication information. When any one of the key switches S1-S19 is pressed, the wire core connected to the corresponding light end of the opposite end is the same wire core as the wire core where the button is located. The configuration of the buzzer and the light-emitting diode greatly improves the human The intuitiveness of the computer interaction also improves the accuracy of the line. At the same time, during the operation of the device, the same cable has no sequence requirements for the control host and the control slave plug-in, which improves the efficiency of the line work.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. The utility model provides a be used for multicore cable to line and fault detection device, is including setting up the device and the receiving arrangement that send a signal at multicore cable both ends, its characterized in that: the transmitting device comprises a control host (1), a power supply (2), a first grounding wiring unit (3) and a transmitting wiring unit (4) are respectively arranged in the control host (1), and the first grounding wiring unit (3) and the transmitting wiring unit (4) are respectively connected with the power supply (2); the receiving device comprises a control slave (5), a second grounding wiring unit (6) and a receiving wiring unit (7) matched with the transmitting wiring unit (4) are respectively arranged in the control slave (5), one end of the receiving wiring unit (7) is connected with the second grounding wiring unit (6), and the other end of the receiving wiring unit is connected with the transmitting wiring unit (4) through a multi-core cable.

2. The apparatus of claim 1 for multi-core cable pair and fault detection, wherein: the signal transmitting and wiring units (4) are connected in parallel to form a plurality of groups, the input ends of the signal transmitting and wiring units (4) are collected and connected to the power supply (2) in a unified mode, and the output ends of the signal transmitting and wiring units are connected with the receiving and wiring units (7) respectively.

3. The apparatus of claim 2 for multi-core cable pair and fault detection, wherein: the signal transmission wiring unit (4) comprises a key switch (41), a signal transmission indicator lamp unit (42) and a signal transmission terminal (43), the key switch (41), the signal transmission indicator lamp unit (42) and the signal transmission terminal (43) are sequentially connected in series to form a signal transmission circuit, the key switch (41) is connected with the positive pole of the power supply (2), and the signal transmission terminal (43) is connected with the receiving wiring unit (7) through a multi-core cable.

4. The apparatus of claim 3 for multi-core cable pair and fault detection, wherein: the signaling indicator lamp unit (42) comprises a first shunt resistor (421) and a first light emitting diode (422), and the first shunt resistor (421) and the first light emitting diode (422) are connected in parallel.

5. The device for multi-core cable alignment and fault detection as claimed in claim 2 or 4, wherein: the receiving wiring unit (7) is provided with a plurality of groups in parallel and is respectively matched with the plurality of groups of transmitting wiring units (4), the input ends of the plurality of groups of receiving wiring units (7) are connected with the transmitting wiring ends (43) of the transmitting wiring units (4), and the output ends of the plurality of groups of receiving wiring units (7) are collected and uniformly connected with the second grounding wiring unit (6).

6. The apparatus of claim 5 for multi-core cable pair and fault detection, wherein: the receiving wiring unit (7) comprises a receiving indicator lamp unit (71) and a receiving terminal (72), the receiving indicator lamp unit (71) and the receiving terminal (72) are connected in series to form a receiving circuit, the receiving indicator lamp unit (71) is connected with the second grounding wiring unit (6), and the receiving terminal (72) is connected with the transmitting terminal (43).

7. The apparatus of claim 6, wherein: the receiving indicator lamp unit (71) includes a second shunt resistor (711) and a second light emitting diode (712), and the second shunt resistor (711) and the second light emitting diode (712) are connected in parallel.

8. The device for multi-core cable alignment and fault detection as claimed in claim 6 or 7, wherein: a transmitting prompter (8) is connected in series between the key switch (41) and the positive pole of the power supply (2), a receiving prompter (9) is connected in series between the receiving indicator lamp unit (71) and the second grounding wiring unit (6), and the transmitting prompter (8) and the receiving prompter (9) are both active buzzers.

9. The apparatus of claim 8 for multi-core cable pair and fault detection, wherein: the first grounding wiring unit (3) is a first grounding common end, one end of the first grounding common end is connected with the negative electrode of the power supply (2), and the other end of the first grounding common end is grounded; the second grounding wiring unit (6) is a second grounding common end, one end of the second grounding common end is connected with the receiving prompter (9), and the other end is grounded.

10. The apparatus of claim 9 for multi-core cable pair and fault detection, wherein: the quick wire clamping device is characterized in that the quick wire clamping device (10) is arranged at one end of the transmitting terminal (43), the receiving terminal (72), one end of the first grounding public end connected with the power supply (2) and one end of the second grounding public end connected with the receiving prompter (9).

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