CN213024453U - Accurate seeking device for cable joint position - Google Patents

Accurate seeking device for cable joint position Download PDF

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Publication number
CN213024453U
CN213024453U CN202021990032.8U CN202021990032U CN213024453U CN 213024453 U CN213024453 U CN 213024453U CN 202021990032 U CN202021990032 U CN 202021990032U CN 213024453 U CN213024453 U CN 213024453U
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China
Prior art keywords
transformer
rfid
capacitor
cable joint
terminal
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CN202021990032.8U
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Chinese (zh)
Inventor
谢彬
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Wuhan Huarui Volt Ampere Power Technology Co ltd
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Wuhan Huarui Volt Ampere Power Technology Co ltd
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Abstract

The utility model relates to a cable joint position accurate searching device, which comprises an RFID label and an RFID reader-writer; the RFID tag is arranged on a cable joint deeply buried underground; and the RFID reader-writer is matched with the RFID label and used for identifying the RFID label. The beneficial effects are that: the underground RFID tags are detected through the RFID reader-writer, each RFID tag has a unique identification code, the identification code is used for realizing initial positioning search of the underground cable joint, then the distance between the current position and the RFID tag is evaluated through the strength of a feedback induction signal, the RFID reader-writer is moved to find the strongest point of the feedback signal, and the position below the current position is the cable joint.

Description

Accurate seeking device for cable joint position
Technical Field
The utility model relates to an accurate technical field that seeks of underground cable joint position, concretely relates to accurate device that seeks of cable joint position.
Background
The cable is widely applied to a power grid, the cable fault caused by the abnormal cable joint accounts for more than 80% of the cable fault, and the cable fault maintenance period is long because the cable is deeply buried underground and the cable joint cannot be quickly found after the cable is in fault.
In addition, the existing cable line lacks a unified and perfect data management system, and the main reasons thereof are two points: on one hand, no data can be checked due to the loss of line path information data and incomplete data management during line construction bottom crossing, and on the other hand, the data cannot be updated in place along with ordinary line maintenance and relocation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device is seeked to cable joint position accuracy is provided to overcome not enough among the above-mentioned prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a cable joint position accurate searching device comprises an RFID label and an RFID reader-writer; the RFID tag is arranged on a cable joint deeply buried underground; and the RFID reader-writer is matched with the RFID label and used for identifying the RFID label.
The utility model has the advantages that: detecting underground RFID tags through an RFID reader-writer, wherein each RFID tag has a unique identification code, realizing initial positioning search of an underground cable joint through the identification codes, evaluating the distance between the current position and the RFID tag through the strength of a feedback induction signal, moving the RFID reader-writer to find the strongest point of the feedback signal, and determining the cable joint below the current position; the RFID reader-writer is used for identifying the RFID label, so that the cable joint is quickly and accurately positioned, and the maintenance period of cable faults is effectively shortened.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the RFID label is a passive RFID label, and the RFID reader generates continuous electromagnetic waves to provide energy required by the operation of the RFID label.
Further, the RFID tag comprises an antenna, a power recovery circuit, a power regulator and a chip, wherein the antenna, the power recovery circuit, the power regulator and the chip are sequentially connected in series.
The beneficial effects of the two steps are as follows: the energy required by the passive RFID label during working completely comes from the energy of electromagnetic waves generated by the RFID reader-writer, and a high-frequency signal induced by the passive RFID label is converted into stable power supply voltage through an internal circuit to provide global energy for a chip in the passive RFID label so as to achieve the purpose of enabling the RFID reader-writer to detect the underground passive RFID label.
Further, the RFID tag comprises an antenna, a transformer T1, a rectifier bridge BD1, a resistor R1, a resistor R2, a VFB, a PFC, a transformer T2, a capacitor C3, an inductor Lr, an inductor Lm, a capacitor C4, a diode D1, a capacitor C2, a capacitor C1 and a diode D2, wherein two input ends of a primary coil of the transformer T1 are respectively connected in series with the antenna and the rectifier bridge BD1, one of two output ends of a secondary coil of the transformer T1 is connected in series with the rectifier bridge BD1, and the other is grounded; one terminal of the capacitor C1 is connected between the antenna and the transformer T1, and the other terminal is grounded; one terminal of the capacitor C2 is connected between the resistor R2 and the rectifier bridge BD1, and the other terminal is grounded; one input end of a primary coil of a transformer T2 is connected with one end of an inductor Lr, the other end of the inductor Lr is connected with one terminal of a rectifier bridge BD1, the other input end of the primary coil of a transformer T2 is connected with an anode of a diode D1, a cathode of the diode D1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with a common end of the inductor Lr and the rectifier bridge BD1, and a resistor R1 is connected with a common end of the inductor Lr and the rectifier bridge BD1 after being connected in parallel with a capacitor C3; two terminals of the capacitor C4 are respectively connected with two output terminals of the secondary coil of the transformer T2; two terminals of the inductor Lm are respectively connected in series with two input terminals of the primary coil of the transformer T2; two output ends of a secondary coil of the transformer T2 are respectively connected with VFB in series, one terminal of the resistor R2 is connected between the inductor Lr and the rectifier bridge BD1, and the other terminal is connected with VFB in series through PFC.
Further, the RFID tag further includes a fuse F1, and the fuse F1 is connected in series between the antenna and the transformer T1.
The beneficial effects of the two steps are as follows: passive RFID label cooperation RFID read write line can realize that the buried cable joint of 10m within ranges surveys, and after getting into communication range, through the induced signal intensity change that the position change arouses, the passive RFID label of perception is far and near apart from the RFID read write line, and then realizes cable joint's accurate positioning.
Further, the RFID reader-writer further comprises a server, and the server is in wireless connection with the RFID reader-writer.
Adopt above-mentioned further beneficial effect to do: and inquiring and updating the searched information of the cable joint, such as the serial number, the name of the position, the maintenance frequency and the like, through the server, and displaying the information of the cable joint on the RFID reader-writer.
Further, the system also comprises a terminal, and the server is in wireless connection with the terminal.
Adopt above-mentioned further beneficial effect to do: and transmitting the cable joint information to the terminal so that personnel held by the terminal can acquire the information of the cable joint.
Adopt above-mentioned further beneficial effect to do: after the RFID reader-writer obtains information such as the position of a cable joint, the data is transmitted to a terminal through a server to be processed, so that the data is unified and perfected and updated in time, and meanwhile, the data can be visually displayed on the RFID reader-writer.
Drawings
Fig. 1 is a structural diagram of the device for accurately finding the position of a cable connector according to the present invention;
fig. 2 is a circuit diagram of an RFID tag.
In the drawings, the components represented by the respective reference numerals are listed below:
100. RFID label, 200, RFID reader-writer, 300, cable joint, 400, server, 500, terminal.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, an apparatus for accurately finding a cable joint position includes an RFID tag 100 and an RFID reader 200; the RFID tag 100 is disposed on a cable joint 300 buried deep underground; the RFID reader 200 is matched with the RFID tag 100 to identify the RFID tag 100.
Example 2
As shown in fig. 2, this embodiment is a further improvement on embodiment 1, and is specifically as follows:
the RFID tag 100 is a passive RFID tag, and the RFID reader 200 generates continuous electromagnetic waves to supply energy required for the operation of the RFID tag 100.
Specifically, the RFID tag 100 includes an antenna, a power recovery circuit, a power regulator, and a chip, which are connected in series in sequence.
The energy required by the passive RFID tag during working is completely derived from the energy of electromagnetic waves generated by the RFID reader-writer 200, the high-frequency signal induced by the passive RFID tag is converted into direct-current voltage required by the working of the chip through the power recovery circuit, and the reliable and stable power voltage is generated through the power regulator to provide global energy for the chip.
Example 3
As shown in fig. 2, this embodiment is a further improvement on the basis of embodiment 2, and is specifically as follows:
the RFID tag 100 comprises an antenna, a transformer T1, a rectifier bridge BD1, a resistor R1, a resistor R2, a VFB, a PFC, a transformer T2, a capacitor C3, an inductor Lr, an inductor Lm, a capacitor C4, a diode D1, a capacitor C2, a capacitor C1 and a diode D2, wherein two input ends of a primary coil of the transformer T1 are respectively connected with the antenna and the rectifier bridge BD1 in series, one of two output ends of a secondary coil of the transformer T1 is connected with the rectifier bridge BD1 in series, and the other is grounded; one terminal of the capacitor C2 is connected between the resistor R2 and the rectifier bridge BD1, and the other terminal is grounded; one terminal of the capacitor C1 is connected between the antenna and the transformer T1, and the other terminal is grounded; one input end of a primary coil of a transformer T2 is connected with one end of an inductor Lr, the other end of the inductor Lr is connected with one terminal of a rectifier bridge BD1, the other input end of the primary coil of a transformer T2 is connected with an anode of a diode D1, a cathode of the diode D1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with a common end of the inductor Lr and the rectifier bridge BD1, and a resistor R1 is connected with a common end of the inductor Lr and the rectifier bridge BD1 after being connected in parallel with a capacitor C3; two terminals of the capacitor C4 are respectively connected with two output terminals of the secondary coil of the transformer T2; two terminals of the inductor Lm are respectively connected in series with two input terminals of the primary coil of the transformer T2; two output ends of a secondary coil of the transformer T2 are respectively connected with VFB in series, one terminal of the resistor R2 is connected between the inductor Lr and the rectifier bridge BD1, and the other terminal is connected with VFB in series through PFC.
RFID tag 100 also includes fuse F1, fuse F1 being strung between the antenna and transformer T1.
Example 4
As shown in fig. 1, this embodiment is a further improvement on the basis of embodiment 1, 2 or 3, and is specifically as follows:
the accurate cable joint position searching device further comprises a server 400 and a terminal 500, the RFID reader-writer 200 is in wireless connection with the terminal 500 through the server 400, the RFID reader-writer 200 uploads information to the server 400 after acquiring data information, and then the server 400 reads the data information.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (5)

1. The cable joint position accurate searching device is characterized by comprising an RFID label (100) and an RFID reader-writer (200); the RFID tag (100) is arranged on a cable joint (300) buried deeply in the ground; the RFID reader-writer (200) is matched with the RFID label (100) and used for identifying the RFID label (100); the RFID tag (100) is a passive RFID tag, and the RFID reader-writer (200) generates continuous electromagnetic waves to provide energy required by the operation of the RFID tag (100); the RFID tag (100) comprises an antenna, a power recovery circuit, a power regulator and a chip, wherein the antenna, the power recovery circuit, the power regulator and the chip are sequentially connected in series.
2. The device for accurately searching the position of the cable joint according to claim 1, wherein the RFID tag (100) comprises an antenna, a transformer T1, a rectifier bridge BD1, a resistor R1, a resistor R2, a VFB, a PFC, a transformer T2, a capacitor C3, an inductor Lr, an inductor Lm, a capacitor C4, a diode D1, a capacitor C2, a capacitor C1 and a diode D2, two input ends of a primary coil of the transformer T1 are respectively connected with the antenna and the rectifier bridge BD1 in series, one of two output ends of a secondary coil of the transformer T1 is connected with the rectifier bridge BD1 in series, and the other end is grounded; one terminal of the capacitor C1 is connected between the antenna and the transformer T1, and the other terminal is grounded; one terminal of the capacitor C2 is connected between the resistor R2 and the rectifier bridge BD1, and the other terminal is grounded; one input end of the primary coil of the transformer T2 is connected to one end of the inductor Lr, the other end of the inductor Lr is connected to one terminal of the rectifier bridge BD1, the other input end of the primary coil of the transformer T2 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to the common end of the inductor Lr and the rectifier bridge BD1, and the resistor R1 is connected to the common end of the inductor Lr and the rectifier bridge BD1 after being connected in parallel to the capacitor C3; two terminals of the capacitor C4 are respectively connected to two output terminals of the secondary coil of the transformer T2; two terminals of the inductor Lm are respectively connected in series with two input ends of a primary coil of the transformer T2; two output ends of the secondary coil of the transformer T2 are respectively connected in series with the VFB, one terminal of the resistor R2 is connected between the inductor Lr and the rectifier bridge BD1, and the other terminal is connected in series with the VFB through the PFC.
3. The device for accurately searching the position of the cable joint as claimed in claim 2, wherein the RFID tag (100) further comprises a fuse F1, and the fuse F1 is strung between the antenna and the transformer T1.
4. The device for accurately searching the position of the cable joint according to any one of claims 1 to 2, further comprising a server (400), wherein the server (400) is wirelessly connected with the RFID reader-writer (200).
5. The device for accurately finding the position of the cable joint as claimed in claim 4, further comprising a terminal (500), wherein the server (400) is wirelessly connected with the terminal (500).
CN202021990032.8U 2020-09-10 2020-09-10 Accurate seeking device for cable joint position Active CN213024453U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021990032.8U CN213024453U (en) 2020-09-10 2020-09-10 Accurate seeking device for cable joint position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021990032.8U CN213024453U (en) 2020-09-10 2020-09-10 Accurate seeking device for cable joint position

Publications (1)

Publication Number Publication Date
CN213024453U true CN213024453U (en) 2021-04-20

Family

ID=75475942

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021990032.8U Active CN213024453U (en) 2020-09-10 2020-09-10 Accurate seeking device for cable joint position

Country Status (1)

Country Link
CN (1) CN213024453U (en)

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