KR100614204B1 - Detecting apparatus for the position of earth burial cable and the method thereof - Google Patents

Abstract

The present invention relates to a cable position detection device and a position detection method. More specifically, in the manufacturing process of the underground laying cable, a tag is attached or a tag is installed on a cable which is already buried, and an antenna for transmitting the tag and a transmission / reception signal, and a computer control command are RFID. Characterized in that it consists of a controller for transmitting to the RF module.

According to the present invention, the position of the cable can be easily confirmed, and the tag attached to the cable can store the manufacturing history of the cable, the receipt and exit management history, and the like, thereby preventing on-site inventory management and theft. In addition, after the cable is laid, the maintenance history can be checked regularly, and the record management can be systematically maintained.

Cable, Direct Cable, Location Detector, Tag, FRID RF Module, Controller, Antenna

Description

Detecting Apparatus for the Position of Earth Burial Cable and the Method

1 is a block diagram of a conventional underground buried material detection device.

Figure 2 is a structural diagram of the position detection device of the present invention.

3 is a flowchart of a cable position detection method of the present invention.

Figure 4 is a flow chart of the information input sequence to the tag attached to the cable of the present invention.

        <Sign Description for Main Configuration>

    1: frequency transmitter 2: loop antenna

    3: electronic display 4: amplifier

    5: indicator 10: position detector

   11 controller 12 RFID RF module

   13 antenna 20 tag

   21: direct cable 30: computer (PC)

The present invention relates to a cable position detection device and a position detection method. In more detail, in the manufacturing process of the underground laying cable, a tag is attached or a tag is installed on a cable which is already embedded, and a signal is transmitted from the antenna in response to the tag and the transmitted / received signal. The present invention relates to a cable position detection device and a position detection method capable of detecting the position and direction of a cable buried underground by sensing a signal.

The term "direct cable" used in the present invention refers to a cable that directly embeds the cable to a certain depth in the basement, and "underground cable" refers to a cable that is embedded in the underground by installing the cable in the pipeline. Thus, "cable" is a concept that includes both direct cable and underground cables.

Recently, with the development of the industry, the underground cable is gradually increasing. For example, fiber optic cables, DC feeder cables, anode lead wires, and shielded cables are being buried underground. In the case of the cable which is already buried, it is marked using buried signs, but it is difficult to determine the exact path when the sign is damaged. In this case, a safety accident is often caused by touching and breaking a cable during a forklift excavation work.

According to the Korean Patent Laid-Open Publication No. 1999-71177 (published date: Sep. 15, 1999) "Underground buried material detecting apparatus and method" according to the present invention, the information on the buried material is built into a database, and a specific frequency derived And a sensor unit having a transmission coil for forming a predetermined magnetic field by a waveform input signal, a sensor unit having a reception coil received from the transmission coil, an input signal applied from the transmission coil and an output signal received from the reception coil. It is composed of a controller that determines the underground buried material by digitalizing the change of amplitude and phase.

As another prior art, Korean Laid-Open Patent Publication No. 2002-93750 (published date: December 16, 2002), according to a buried pipeline detector, includes an electronic indicator on a buried pipeline, and includes a transmitter, a loop antenna, an amplifier, and an indicator. It discloses a detection device consisting of. FIG. 1 is a diagram shown in the 2002-93750 publication, which is composed of a transmitter (1), a loop antenna (2), an electronic indicator (3) attached to a buried pipeline, an amplifier (4), and an indicator (5). Indicates.

However, specific detection devices and detection methods for telecommunication cables, power cables, fiber optic cables, DC feeder cables, anode lead wires, shielded cables, and cable products buried underground have not been proposed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cable position detection device and a position detection method that can accurately find a direct-attached cable with a tag embedded in the basement. .

It is still another object of the present invention to provide a cable position detection device and a position detection method for systematically managing the history of maintenance from the time of manufacture to the disposal of the cable by attaching a tag in a cable manufacturing process.

In order to achieve the above object, the present invention provides a cable position detecting apparatus for detecting a position of a direct buried cable buried underground, a tag attached to a direct buried cable buried underground; A computer for inputting and detecting information into the tag; And a position detecting device comprising an antenna for transmitting and receiving a signal detected from the tag, an RFID RF module for transmitting a signal in response to the received signal from the antenna, and a controller for transmitting a control command of the computer to the RFID RF module. Characterized in that.

In addition, the method for detecting the position of the direct sales cable by using the position detecting device comprises the steps of: detecting a position in the position detecting device; Charging the tag; Modulating and transmitting the information stored in the tag; Receiving page data in a tag; Transmitting page data in a tag; Receiving frequency demodulation and page data; And detecting the cable position in the position detection device.

The method of inputting information into the tag may include: performing an input command at a computer; Charging the tag; Modulating and transmitting the information stored in the tag; Receiving data at a tag; Inputting data into the tag; Transmitting data in a tag; Receiving page input data; Checking for errors; Transmitting data from the controller to the computer.

Preferably, the tag is attached to the tag in the manufacturing process of the direct buried cable for underground buried or characterized in that the tag attached to the buried direct cable.

In addition, the frequency of use of the position detection device is characterized in that any one of 13.56Mhz, 900Mhz, 2.4Ghz can be selectively used.

Position detection apparatus of the present invention can be used to detect the position of the communication cable, power cable, optical fiber cable, DC feeder cable, Anode Lead Wire, shielded cables, respectively. The field of use of the present invention is very broad.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

2 is a structural diagram of a position detecting apparatus of the present invention, FIG. 3 is a flowchart illustrating a method of detecting a position of a direct sales cable of the present invention, and FIG. 4 is a flowchart in a sequence of inputting information into a tag attached to the direct sales cable.

As shown in FIG. 2, the computer 30 separated from the position detecting device 10 and located at an upper end thereof; A tag 20 attached to the direct cable 21; An antenna 13 for transmitting and receiving a signal detected from the tag 20, an RFID RF module 12 for transmitting a signal in response to a received signal from the antenna 13, and a control command of a computer for receiving an RFID RF module ( 12 is composed of a position detection device 10 composed of a controller 11 for transmitting to.

Position detection device 10 may be designed in a variety of shapes to detect the location of the direct buried cable buried underground while carrying a small independent device.

The controller 11 is connected to the computer 30 at the upper end by RS-232 or RS-485 / 422 communication, and receives data from the computer 30 to receive the RF-ID RF module 12. The RFID RF module 12 receives the data and transmits the data to the computer 30. The RFID RF module 12 receives a detection command of the direct sales cable from the controller 11 and transmits and receives a signal to and from the tag 20 attached to the direct sales cable 21 embedded underground through the antenna 13. The data input to 20 is demodulated and the data is transmitted to the controller 11.

Since the tag 20 used in the embodiment of the present invention does not have its own power supply, it is charged first, and then data is transmitted and received. And the tag 20 has abundant storage capacity. The antenna 13 uses a loop antenna, a helical antenna, or the like depending on the RFID frequency used.

3 and 4 illustrate the order of detecting the position of the direct sale cable and the order of writing information to the tag attached to the direct sale cable according to the embodiment of the present invention.

First, the procedure for detecting the position of the direct sales cable will be described. When the computer 30 issues a read command, the position detector 10 charges the tag 20 for 50 ms. Subsequently, a command for designating a specific page among the 17 pages of the tag 20 is issued.

Then, the RFID RF module 12 charges the tag 20 and transmits the page information by frequency modulation (FSK). The next tag 20 is charged for 50 ms and receives page information and transmits the corresponding page data.

The data is received via the antenna 13 of the RFID RF module 12 and frequency demodulation is performed in the RFID RF module 12. The demodulated data is received by the position detecting device 10 and detected on the screen of the position detecting device 10.

Next, the procedure for writing information to the tag 20 of the direct sales cable 21 will be described. First, when the computer 30 issues an information input command, the RFID RF module 12 charges the tag 20 for 50 ms. The RFID RF module 12 receives the page and input data from the controller 11, modulates the frequency, and transmits the frequency to the tag 20 through the antenna 13. At this time, the CRC chechsum is performed to check the data for errors, and the tag 20 also performs CRCchechsum to detect the presence of an error. Here, "CRC Chechsum" is an error prevention algorithm that determines whether data is damaged.

When information input is completed, the tag 20 transmits the input data back to the RFID RF module 12. Then, the RFID RF module 12 demodulates the frequency and passes the data to the controller 11. The controller 11 checks an error and detects an input abnormality, and then informs the computer 30 that the input is normally performed. In this way, the cable manufacturer stores in the tag 20 attached to the cable 20, the type of cable, manufacturing history, input and output management information, on-site inventory information, and the like. In addition, after the cable is installed, buried position, direction, maintenance management information, etc. can be input to database it.

As mentioned above, although this invention was demonstrated based on the above Example, this invention is not limited to this, A person skilled in the art considers that it does not depart from the technical idea of this invention, and changes and design change belong to this invention.

According to the present invention, it is possible to easily check the position of the direct sales cable buried underground, the history of the cable manufacturing history, incoming and outgoing management history, destination site inventory management, etc. can be stored in the tag attached to the cable to prevent theft have. In particular, it is possible to memorize the maintenance management history after the buried direct sales cable installation, it is possible to systematically operate the maintenance history from the manufacture of direct sales cable to the disposal.

Claims (6)

In the cable position detection device for detecting the location of the cable buried underground, A tag 20 attached to the direct cable 21; A computer 30 for inputting and detecting information into the tag 20; An antenna 13 for transmitting and receiving a signal detected from the tag 20, an RFID RF module 12 for transmitting a signal in response to a transmission / reception signal from the antenna 13, and control of the computer 30 Cable position detection device comprising a position detection device (10) consisting of a controller (11) for transmitting a command to the RFID RF module (12). The cable of claim 1, wherein the tag 20 attaches the tag 20 to the underground direct buried cable 21 or installs the tag 20 in the buried direct cable. Position detector. The method of claim 1, wherein the position detection device (10) uses a frequency of 13.56Mhz, 900Mhz, 2.4Ghz to selectively use any one of the cable position detection method. In the method for detecting the position of the direct cable (21) using the position detecting device (10) of the cable of claim 1, Giving a detection command in the position detection device (10); Charging the tag; Transmitting frequency modulation and page data; Receiving page data in a tag; Transmitting page data in a tag; Receiving frequency demodulation and page data; And detecting the cable position in the position detecting device. The method of inputting information into the tag 20 using the position detecting device 10 of the cable of claim 1 Making an input command in a computer; Charging the tag; Transmitting frequency modulation and page data; Receiving data at a tag; Inputting data into the tag; Transmitting data in a tag; Receiving page input data; Checking for errors; And transmitting data from the controller to the computer. The position detecting device of claim 1 is used to detect the position and direction of any one of the communication cable, power cable, optical fiber cable, DC feeder cable, anode lead wire and shielded cable embedded in the basement. Cable position detection device characterized in that.

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