KR20050050454A - System and method for detecting material laid under the ground using rfid - Google Patents

Abstract

The present invention relates to an underground buried material detection system and a method using the RFID method, the underground buried material detection system of the present invention, underground buried material buried in the ground; Attached to the underground buried, the buried date of the buried, buried institution, construction company name, the type / material / size / classification of buried, the depth of the buried, the direction of the buried, the current location of the buried, the shape of the buried, the RFID An RFID tag in which data is stored, including front and rear intervals of the tag and production information of the buried material; A communication antenna for wirelessly transmitting and receiving data with the RFID tag; And a terminal for decoding the data received from the communication antenna and displaying detailed information on the underground buried material on a display or more, thereby excavating the road around the underground buried material or performing the underground buried work. Construction can proceed safely without damage.

Description

Underground burial detection system and method using RFID method {System and method for detecting material laid under the ground using RFID}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a underground buried detection system, and more particularly, to a system and method for detecting underground buried ground using a radio frequency identification (RFID) scheme.

RFID is a state-of-the-art method for wirelessly recognizing information using microwaves or longwaves, and is mainly used in the field of automatic recognition such as barcodes, magnetics, and IC cards.

Water pipes, sewer pipes, gas pipes, and cables that transmit electrical and telecommunications signals that supply household needs are mostly buried underground to prevent damage and damage from external shocks. These facilities are managed and maintained by municipalities and related government agencies. For example, water and sewage pipes are operated by Korea Water Resources Corporation and local governments, gas pipes by Korea Gas Corporation and regional gas suppliers, communication cables by Korea Telecom, and power cables by KEPCO.

These underground works are buried along the road, which is often excavated due to various works. When excavating roads, it is essential to seek the coordination of the agency managing the underground burial. However, it is difficult to cooperate with the agencies in charge, and it is difficult to find the exact location of each of the institutions by looking at the drawings of underground works. Moreover, when the location or structure of underground works are changed due to excavation work, it is often not noticed or not shown on the drawings. In this state, if the excavation work is unintentional, but inaccurate information may impact the underground works, and in extreme cases, this may cause a large accident resulting in huge property loss and casualties. do.

As such, it is necessary to pinpoint the location of the facilities buried in the ground during road excavation, which is not practically easy, and even if the location of the underground buried is accurately identified, it is more impossible to check the structure or the detailed condition. to be.

The technical problem to be achieved by the present invention is to provide a underground buried detection system that can accurately identify the location of the facilities buried in the ground, and can grasp detailed information about the facilities.

Another technical problem to be achieved by the present invention is to provide a method for detecting the underground buried material that can accurately identify the location of the facilities buried in the ground using the underground buried detection system, and to confirm detailed information about the facilities.

The present invention to achieve the above technical problem

Underground burial buried in the ground; Attached to the underground buried, the buried date of the buried, buried institution, construction company name, the type / material / size / classification of buried, the depth of the buried, the direction of the buried, the current location of the buried, the shape of the buried, the RFID An RFID tag in which data is stored, including front and rear intervals of the tag and production information of the buried material; A communication antenna for wirelessly transmitting and receiving data with the RFID tag; And a terminal for decoding the data received from the communication antenna and displaying detailed information on the underground buried material on a display or more.

Preferably, the conveying means is a wheel; A wheel shaft supporting the wheel and provided with the communication antenna; A support for supporting the wheel shaft; And a handle installed on the support so that the user can rotate the wheel, and the terminal is mounted on the support.

The present invention to achieve the above other technical problem

CLAIMS 1. A method for detecting underground buried property comprising an RFID tag, a communication antenna, and a terminal attached to underground buried material, the method comprising the steps of: (a) radiating an RF signal to underground through the communication antenna; (b) generating an induced current when the RFID tag receives the RF signal and transmitting a unique number of the RFID semiconductor chip embedded in the RFID tag to the communication antenna; (c) the terminal searching whether the unique number of the RFID semiconductor chip received from the communication antenna is included among the numbers embedded in the terminal; (d) requesting data stored in the RFID tag by transmitting a signal to the RFID tag when a unique number of the RFID semiconductor chip is included in the embedded numbers as a result of the search; (e) transmitting data containing the RFID tag to the communication antenna; And (f) analyzing the data received from the RFID tag and displaying detailed information on the underground deposit on the display.

According to the present invention, it is possible to accurately detect the detection of underground buried material to prevent breakage of the underground buried material during excavation construction.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a view showing a buried underground detection system according to the present invention. Referring to FIG. 1, the underground buried detection system includes underground buried material, an RFID tag 121, a communication antenna 131, a terminal 141, and a transport means.

The underground embedding 111 is composed of a pipe through which constant, sewage, electricity, etc. flow, or a pipe including a cable for transmitting electricity, a communication signal, and the like. Underground works include time capsules.

The RFID tag 121 is attached to the underground embedding 111. The RFID tag 121 is previously attached to the middle of the buried material 111 during the manufacturing process of the buried ground material, or is attached to the surface of the buried material 111 in the process of embedding the buried material 111 in the ground.

Since the RFID tag 121 is buried in the ground, the RFID tag 121 is made of a material that is not corroded or damaged even in the ground.

The RFID tag 121 includes an RFID semiconductor chip (not shown) in which detailed information on the underground embedding 111 is stored. The RFID semiconductor chip has a unique number. The unique number of the RFID semiconductor chip is uniquely given to each RFID semiconductor chip as a serial number, and the length of the unique number is mainly 64 bits. The unique number given to the RFID semiconductor chip cannot be changed by any system.

The RFID semiconductor chip has a memory capable of storing sufficient information although there are some differences between tags and products. This memory may vary depending on the RFID tag 121, but there is a form that cannot be restored after the information is written once, such as a read only memory (ROM). Possible forms are, for example, a flash memory, a programmable ROM (PROM), an electrically erasable PROM (EEPROM), and the like. The RFID semiconductor chip of the present invention preferably uses a ROM that can be masked so that it cannot be re-stored after storing the information. If data can be resaved while underground buried data is stored on the RFID semiconductor chip, the data stored on the RFID semiconductor chip may be deliberately changed by an outsider. Because of the number, it is necessary to prevent it.

The data stored in the RFID semiconductor chip includes the buried date of the buried material 111, the buried institution, the construction company name, the type / material / size / classification of the buried material 111, the depth of the buried material 111, the depth of the buried material 111 Direction, the current position of the buried material 111, the shape of the buried material 111, the front and rear intervals of the RFID tag, and the production information of the buried material 111. The RFID semiconductor chip encrypts and transmits the stored data to the communication antenna 131. Since encryption methods vary from operator to operator, data stored in the RFID semiconductor chip cannot be decrypted unless they are the same operator.

Most RFID semiconductor chips have no passive power source (Passive Type), and the active semiconductor type has a long communication distance. However, it is preferable to use a passive type since the RFID semiconductor chip for underground buried detection cannot continuously supply power from the outside.

The communication antenna 131 transmits and receives data wirelessly using the RFID tag 121 and RF. The communication antenna 131 will be described in detail with reference to FIG. 2.

The terminal 141 is connected to the communication antenna 131 through the wire 135 and decodes the data related to the underground buried material received from the communication antenna 131 to provide the user with detailed information on the underground buried material 111. to provide. The terminal 141 performs wireless communication with the RFID tag 121 using a specific frequency, for example, 125 [KHz], 13.56 [MHz], 915 [Mhz], and 2.4 [Ghz]. The terminal 141 may include an RFID reader that reads data stored in the RFID tag 121 by an RFID method.

The terminal 141 is provided with a display 143 for showing underground buried information related to the user and buttons 145 for inputting and outputting data of the terminal.

The terminal 141 may decode underground buried data in itself, but may be connected to a separate computer (not shown) to allow the computer to process the decoding process. In this case, the unique numbers of the RFID tags 121 are stored in a database provided in the computer, and the computer also serves to retrieve them.

When the RFID tag 121 is attached to each of the buried objects buried in multiple layers in the ground, they respond to the terminal 141 at the same time. Therefore, even if there are several RFID tags 121 using the same frequency, the terminal can distinguish these several RFID tags 121 at the same time.

As such, when the RFID tag 121 buried in the ground is read later by using the terminal 141, the RFID tag 121 adjacent to the ground is wirelessly read from the surface of the ground, so that the exact position of the underground buried material 111 can be obtained. Information stored in the RFID tag 121 can be read.

An RFID writer is used to store data in the RFID tag 121. The RFID writer includes a keyboard for performing a GPS function, a direction setting function, and a data input function in order to store various information about the underground buried material 111 in the RFID tag 121.

The terminal 141 may be provided with an RFID reader and an RFID writer. If the uses are significantly different, the terminal 141 may be used separately.

The transport means supports the wheel 151, the wheel 151, the wheel shaft 155 having the communication antenna 131 horizontally installed, a support 161 supporting the wheel shaft 155, and the user moves the transport means. It is composed of a handle 171 installed on the upper portion of the support 161 to facilitate. The terminal 141 is mounted on the support 161.

The wired 135 electrically connecting the communication antenna 131 and the terminal 141 passes through the inside of the support 161 or is attached to the outer surface.

2 shows an example of the communication antenna 131 shown in FIG. 1. Referring to FIG. 2, the communication antenna 131 includes a radiator 211 and a support 221 that radiate radio waves.

The radiating portion 211 has directivity as radiating radio waves. Therefore, by directing the portion where the radio waves are emitted to the ground, the radio waves are concentrated to the ground, it is possible to efficiently detect the RFID tag 121.

The underground buried material 111 is usually buried within a depth of 1 [m]. However, in some cases, the underground buried material 111 is buried deeper than that. Thus, the communication antenna 131 is buried at least 1 [m] in the RFID tag 121. It also has the capability to communicate with).

3 is a view showing another embodiment of the underground embedding shown in FIG. Referring to FIG. 3, the underground embedding may be composed of a double tube consisting of an inner tube 311 and an outer tube 312, and an RFID tag 121 is attached between the outer tube 312 and the inner tube 311.

4 is a flowchart illustrating a method for detecting underground buried water using the underground buried water detecting system according to the present invention. Referring to FIG. 3, the method for detecting underground deposits includes first to sixth steps. Referring to Figure 1 will be described in the underground buried detection method shown in FIG.

In a first step 411, the terminal 141 emits a radio frequency (RF) signal to the ground through the communication antenna 131 to detect the RFID tag 121. By directing the portion of the communication antenna 131 that emits radio waves toward the ground, the radio waves are not jetted into the air, and the radio waves are concentrated only to the ground. Therefore, the transmission efficiency is high and the RFID tag 121 embedded in the ground can be detected accurately.

In a second step 421, when the RFID tag 121 enters the radio wave emission region of the communication antenna 131, that is, when the RFID tag 121 receives an RF signal radiated from the communication antenna 131, an induced current is generated. The unique number of the RFID tag 121 is transmitted to the communication antenna 131.

In a third step 431, the terminal 141 searches whether the unique number of the RFID tag 121 received through the communication antenna 131 is included in the stored numbers. In order to manage and maintain the RFID tags 121 embedded in the ground, the terminal 141 stores all unique numbers of the RFID tags 121 embedded in the ground in its own database. Since some of the RFID tags 121 are managed by a company other than the company, it is necessary to store and maintain unique numbers of the RFID tags 121 managed by the company.

As a fourth step, if the search result 435, the unique number of the received RFID tag 121 is included in the numbers stored in the terminal 141, the terminal 121 is an RF signal to the RFID tag 121 Request to transmit the data stored in the RFID tag 121 (441). If the search result 435 and the unique number of the RFID tag 121 is not included in the numbers stored in the terminal 141, the user searches for another RFID tag or finds a related institution and the information about the underground deposit 111. The construction can be progressed by grasping.

In a fifth step 451, the RFID tag 121 encrypts and stores the stored underground buried data.

In a sixth step 461, the terminal 121 decrypts the underground embedding related data received through the communication antenna 131 to obtain detailed information about the underground embedding 111.

As described above, the contractor who intends to excavate the periphery of the underground buried material 111 by acquiring detailed information about the underground buried material 111 from the RFID tag 121 embedded in the ground through RF communication using the underground buried material 111 When excavation work using the exact location and detailed information on the excavation work can be safely carried out without damaging the underground buried material (111).

The best embodiments have been disclosed in the drawings and the specification, and the terminology used herein is for the purpose of describing the invention only and is not intended to be limiting of the scope of the invention as defined in the appended claims or claims. Therefore, various modifications and equivalent other embodiments will be possible to those skilled in the art, and the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

As described above, according to the present invention, the position of the RFID tag 121 attached to the underground buried material 111 is accurately detected, and the data stored in the RFID tag 121 is read out to obtain accurate information about the underground buried material 111. I can grasp it. Therefore, the operator can safely work without damaging the underground buried 111 when excavating work around the underground buried 111 or work related to the underground buried 111.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a view showing a buried underground detection system according to the present invention.

2 is a diagram illustrating an example of the communication antenna illustrated in FIG. 1.

3 is a view showing another embodiment of the underground embedding shown in FIG.

4 is a flowchart illustrating a method for detecting underground buried water using the underground buried water detecting system according to the present invention.

Claims (5)

Underground burial buried in the ground; Attached to the underground buried, the buried date of the buried, buried institution, construction company name, the type / material / size / classification of buried, the depth of the buried, the direction of the buried, the current location of the buried, the shape of the buried, the RFID An RFID tag in which data is stored, including front and rear intervals of the tag and production information of the buried material; A communication antenna for wirelessly transmitting and receiving data with the RFID tag; A terminal for decoding the data received from the communication antenna and displaying detailed information on the underground buried material on a display or more; And And a transport means for transporting the terminal and the communication antenna. The method of claim 1, wherein the transport means wheel; A wheel shaft supporting the wheel and provided with the communication antenna; A support for supporting the wheel shaft; And It consists of a handle installed on the support so that the user can rotate the wheel, Underground detection system, characterized in that the terminal is mounted on the upper portion of the support. The method of claim 1, wherein the underground buried Water or gas is composed of a pipe flowing through the inside, the pipe is a single tube formed of a single layer or an inner tube formed in a single layer and the outer tube, the RFID tag is attached to the outside of the tube or between the inner tube and the outer tube of the double tube. Underground burial detection system. In the method of detecting the underground buried by having an RFID tag, a communication antenna and a terminal attached to the underground buried, (a) the terminal radiating an RF signal to the ground through the communication antenna; (b) generating an induced current when the RFID tag receives the RF signal and transmitting a unique number of the RFID semiconductor chip embedded in the RFID tag to the communication antenna; (c) the terminal searching whether the unique number of the RFID semiconductor chip received from the communication antenna is included among the numbers embedded in the terminal; (d) requesting data stored in the RFID tag by transmitting a signal to the RFID tag when a unique number of the RFID semiconductor chip is included in the embedded numbers as a result of the search; (e) transmitting data containing the RFID tag to the communication antenna; And and (f) analyzing the data received from the RFID tag and displaying detailed information on the underground deposit on the display. 5. The underground buried material of claim 4, wherein the RFID tag encrypts embedded data and transmits the encrypted data to the communication antenna, and the terminal decodes the encrypted data to display the information on the underground buried material to the user. Detection method.