JP2006105820A - Structure, structure deterioration detecting system, and structure deterioration detection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure, a structure deterioration detecting system, and a structure deterioration detection method capable of efficiently detecting deterioration. <P>SOLUTION: IC tag embedded position data are stored in an IC tag embedded position data storage part 22 in a deterioration managing server 20. The IC tag embedded position data include data on IC tag identifiers, sewerage pipe identifiers and positions. An embeding tag is embedded in a sewerage pipe 100. The embedded tag exposed caused by the deterioration of the sewerage pipe 100 drifts to a drifting recovery facility 30 in accordance with sewage flow, and is read by an IC tag reader 31. A transmitter 32 transmits a deterioration notice to the deterioration managing server 20 via a network. Hereby, the deteriorated site can be specified. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure capable of efficiently detecting deterioration, a structure deterioration detection system, and a structure deterioration detection method.

  Some structures deteriorate with the passage of time or use, and periodic inspection is necessary to grasp the deterioration state. Many such structures are difficult to inspect. For example, sewer pipes (tubes) that are generally buried in the ground are aging over time, and cracks in the pipes and displacement of joints due to changes in the ground, etc. Will not be fulfilled. Especially in sewer pipes where various waste liquids flow, hydrogen sulfide may be generated from the biochemical reaction of organic matter and bacteria contained in the sewage depending on the location, and a slime layer or sulfuric acid is generated. Or For this reason, as shown in FIG. 10, a concrete corrosion / deterioration region 500 is generated in the concrete constituting the sewer pipe by exposure to sulfuric acid or the like over a long period of time. For this reason, the inspection for grasping the situation in the buried pipe is periodically performed. As an inspection method, a method in which a person enters the tube and visually inspects the tube with a large diameter is generally used. However, it is difficult for a small-diameter pipe or a vertical pipe to be inspected by a person. As mentioned above, hydrogen sulfide may be generated, which is often accompanied by a danger for maintenance personnel.

  Therefore, a technique relating to a water-tightness inspection method and apparatus for examining the presence or amount of intrusion water or water leakage mainly for buried pipes such as sewer pipes (mannels) provided with manholes is disclosed (for example, patents). Reference 1). In this technique, in the water tightness inspection method for buried pipes, stop cocks are respectively provided on the upstream end side and the downstream end side of the inspection section arbitrarily set in the buried pipe downstream of the manhole. Then, after connecting the water column pipe inserted from the ground entrance of the manhole to the inspection section to connect the water column pipe and the inspection section, and filling the inspection section of the buried pipe and the water column pipe with water, Measure the water level change in the water column pipe. Thereby, a watertight test can be performed.

In addition, an apparatus and a method for scanning a pipeline such as a sewer and detecting a defect are also disclosed (for example, see Patent Document 2). In this technology, a self-propelled tow truck moves through a pipeline, automatically collects data and sends it to a computer. The computer provides a real-time display of the pipeline with pseudo 3D information. The digitized data is stored for use in analysis, table creation, pipeline infrastructure maintenance software, and the like. Thereby, the pipeline can be inspected, and data related to the inspection can be evaluated.
JP-A-8-170936 (first page, FIG. 1) Japanese translation of PCT publication No. 2004-509321 (first page, FIG. 3)

  However, in the measurement method described in Patent Document 1, since the change in the water level in the manhole is measured in order to measure the amount of water leakage in the buried pipe, it is necessary to stop the use of that section. Furthermore, according to this method, it is necessary to inject new water every time for a series of inspection sections downstream from the manhole. In addition, there are over 500,000 manholes in Tokyo alone, which should be maintained and inspected, reaching about 15000 km in Tokyo. In the measurement method described in Patent Document 2, it takes a long time for the inspection.

  Today, there are many structures that are not limited to the buried pipes as described above. In addition, there are various places where structures are installed, and there are many cases where inspection is difficult. A technique for efficiently performing such an inspection has been demanded.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a structure, a structure deterioration detection system, and a structure deterioration detection method capable of efficiently detecting deterioration.

In order to solve the above problems, the invention described in claim 1 is characterized in that the wireless tag is arranged at a position affected when the structure is deteriorated.
The invention according to claim 2 is characterized in that, in the structure according to claim 1, data related to a position identifier for specifying a position arranged for each wireless tag is recorded in the wireless tag.

The gist of the invention described in claim 3 is that the structure according to claim 1 or 2 further includes radio wave transmission means for detecting the wireless tag.
The gist of the invention described in claim 4 is the structure according to claim 1 or 2, further comprising radio wave writing means for writing data relating to the current status to the wireless tag.

The gist of the invention described in claim 5 is the structure according to any one of claims 1 to 4, wherein the wireless tag has a waterproof structure.
According to a sixth aspect of the present invention, there is provided a wireless tag having a wireless tag identifier recorded thereon, a structure in which the wireless tag is disposed at a position where the structure is detached when the structure deteriorates, and a wireless tag for detecting the wireless tag A structure deterioration detection system including a detection unit, wherein when the wireless tag detection unit detects a wireless tag detached from the structure and acquires a wireless tag identifier of the wireless tag, the wireless tag identifier is associated with the wireless tag identifier. The present invention includes a deterioration position specifying unit that specifies a recorded position and a deterioration information output unit that outputs the specified position as deterioration information.

  According to a seventh aspect of the present invention, in the structural deterioration detection system according to the sixth aspect, arrangement position data is recorded as a wireless tag identifier in the wireless tag, and the deterioration position specifying means is configured to detect the wireless tag. The gist of the invention is that the degradation position is specified based on the arrangement position data recorded on the wireless tag in which the means detects the separation from the structure.

  The invention according to claim 8 is the structural deterioration detection system according to claim 6 or 7, wherein the structure further includes radio wave transmission means for detecting the wireless tag, wherein the wireless tag detection means includes: The gist is to use the radio wave transmitting means to read a wireless tag arranged on the structure and detect a wireless tag that has not been read as a detached wireless tag.

  The invention according to claim 9 is the structural deterioration detection system according to claim 6 or 7, further comprising radio wave writing means for writing data relating to the current status to the wireless tag, wherein the wireless tag detection means comprises: The gist is to identify the deterioration state based on the state recorded in the wireless tag that detects the separation from the structure.

  According to a tenth aspect of the present invention, in the structure deterioration detection system according to any one of the sixth to ninth aspects, the wireless tag includes a waterproof structure, and the wireless tag detection means is attached to the structure. The gist of the present invention is to detect a wireless tag that has flowed out due to the fluid in contact therewith.

The invention described in claim 11 is the structure deterioration detection system according to claim 10, wherein the structure is a pipe for flowing a fluid, and the wireless tag detection means is located at a position where the wireless tag is disposed. The gist is that it is provided downstream.

  The invention according to claim 12 is installed at a position where the structure is detached when the structure is deteriorated, and a wireless tag having data storing information on the installed position detects that the structure is detached from the structure. The gist is to detect the deterioration of the structure.

(Function)
According to the invention described in claim 1, 6 or 12, for example, a structure is detected by detecting a wireless tag detached from the structure due to deterioration or a wireless tag which becomes unresponsive due to the deterioration of the structure. It is possible to grasp the deterioration of.

According to invention of Claim 2 or 7, the position which the structure deteriorated can be pinpointed by detecting a wireless tag.
According to the invention described in claim 3 or 8, since the structure has a radio wave transmission means for detecting the wireless tag, the wireless tag is read and the deterioration of the structure is grasped by the wireless tag which does not respond. Can do.

  According to the invention described in claim 4 or 9, the radio wave writing means transmits the current status data to update the current status of the wireless tag. For this reason, for example, when the wireless tag is provided at a position where the radio wave is received from the radio wave writing means, such as when the wireless tag is provided on the structure, the current situation is updated. Further, when the wireless tag is located at a position where the wireless tag is detached from the structure and does not receive the radio wave from the radio wave writing means, the current status is not updated. Therefore, it can be seen from the status data read from the detected wireless tag that the wireless tag has detached from the structure, that is, the state in which the wireless tag has been deteriorated. For example, when the current time is recorded as the current situation, it is possible to know the time when the wireless tag is detached due to the deterioration of the structure (that is, the deterioration time). Also, for example, when the current temperature and an index (pH value) indicating the concentration of hydrogen ions at that time are recorded as the current situation, the temperature when the wireless tag is detached due to the deterioration of the structure, The pH value can be known. Therefore, it is possible to grasp the deterioration time and status of the structure based on the data regarding the status of the detached wireless tag.

According to invention of Claim 5 or 10, since it has a waterproof structure, it can be used for the structure which contacts fluids, such as water, and it can grasp | ascertain degradation of such a structure.
According to the eleventh aspect of the present invention, it is possible to efficiently detect the wireless tag pushed away by the fluid flowing in the structure.

  According to the present invention, deterioration of a structure can be detected efficiently.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described with reference to FIGS.
(First embodiment)
In the present embodiment, a case where the present invention is embodied in order to grasp the deterioration status of sewer pipes constituting the sewer treatment facility will be described with reference to FIGS. Sewage as a fluid flows through the sewer pipe.

As shown in FIG. 1, a sewer pipe 100 as a structure is stretched under a road. The sewage pipe 100 is composed of a plurality of sewage main pipes 101 extending linearly along a road and a manhole pipe 102 for connecting and checking the sewage main pipe 101. The sewage main pipe 101 is a concrete pipe, and both ends thereof can be connected to the manhole pipe 102. In the present embodiment, the manhole pipe 102 is a concrete pipe to which the sewage main pipe 101 is connected, and is configured to be able to enter the sewage main pipe 101 from the ground. The manhole tube 102 is covered with a manhole cover.

  As shown in FIG. 2, a plurality of embedded tags 10 are arranged and embedded as radio tags in the vicinity of the surfaces of the sewage main pipe 101 and the manhole pipe 102. As shown in FIG. 3, the embedded tag 10 includes an IC tag 11 and a waterproof capsule 12 for enclosing the tag. The IC tag 11 includes an antenna, a control unit, and a memory unit. The antenna is supplied with electric power from the outside by radio waves, and the control unit transmits data stored in the memory unit to the outside through the antenna. In this memory unit, data relating to an IC tag identifier for identifying the IC tag 11 is stored. On the other hand, the waterproof capsule 12 has a waterproof structure for preventing intrusion of water or the like by sealing the IC tag 11 included therein, and even when the IC tag 11 is included, It is configured to float.

  In addition, a sewage treatment plant is disposed downstream of the sewer pipe 100. In this sewage treatment plant, a drift recovery facility 30 as shown in FIG. 1 is provided. The drift recovery facility 30 stops the sewage flowing through the sewer pipe 100 at a stop, and recovers drifts such as dust floating on the surface.

  An IC tag reader 31 is attached to the drift collection facility 30. The IC tag reader 31 includes an antenna, and detects the IC tag 11 that has flowed to the stop portion of the drift collecting facility 30 by transmitting a radio wave having a predetermined frequency via the antenna. The IC tag reader 31 is connected to a transmitter 32. The transmitter 32 transmits the data of the IC tag 11 detected by the IC tag reader 31 to the deterioration management server 20 via the network.

  The deterioration management server 20 includes a management computer 21. The management computer 21 includes a CPU, a RAM, a ROM, and the like (not shown), and performs processing to be described later. Then, by executing the structure deterioration detection program for this purpose, the management computer 21 functions as a deterioration position specifying means, a deterioration information output means, and the like. In the present embodiment, the management computer 21 and the IC tag reader 31 function as a wireless tag detection unit.

  Further, the deterioration management server 20 includes an IC tag embedded position data storage unit 22. The IC tag embedment position data storage unit 22 stores IC tag embedment position data 220 as shown in FIG. The IC tag embedment position data 220 is recorded when the sewage main pipe 101 or the manhole pipe 102 in which the embedment tag 10 is embedded is installed. The IC tag embedment position data 220 includes data related to an IC tag identifier, a sewer pipe identifier, and a position.

In the IC tag identifier data area, data relating to an identifier for specifying the IC tag 11 is recorded.
In the sewer pipe identifier data area, data relating to an identifier for specifying the sewer pipe (the sewer main pipe 101 or the manhole pipe 102) in which the embedded tag 10 of the IC tag 11 is embedded is recorded.

In the position data area, data for specifying the position where the sewer pipe is buried is recorded. For example, address data is used as the position data.
Next, in the system configured as described above, a processing procedure in the case of grasping the deterioration status of the concrete pipe constituting the water treatment facility will be described with reference to FIGS. Here, for example, a case is assumed in which the concrete portion C constituting the sewage main pipe 101 of the sewer pipe 100 is eroded and cracked due to some cause such as aging.

  In this case, as shown in FIG. 5, in the deteriorated portion of the concrete portion C, the embedded tag 10 is exposed on the surface and then released from the concrete portion C. Then, the free buried tag 10 is floated and spilled in the sewage of the sewer pipe 100. In the present embodiment, the buried tag 10 that has been washed away drifts to the sewage treatment plant downstream of the sewer pipe 100.

  In the sewage treatment plant, the buried tag 10 flows to the stop portion of the drift collecting facility 30 while floating on the surface of the sewage. The IC tag reader 31 of the drift collection facility 30 periodically reads the IC tag 11 (step S1-1). Specifically, the IC tag reader 31 periodically transmits radio waves of a predetermined frequency and tries to detect the IC tag 11.

  At this time, when the embedded tag 10 including the IC tag 11 is strayed at the stopping part of the drift collecting facility 30, the radio wave transmitted from the IC tag reader 31 is supplied to the IC tag 11 as electric power. . With this power, the control unit of the IC tag 11 reads the IC tag identifier data from the memory unit and transmits this data via the antenna of the IC tag 11.

  The IC tag reader 31 determines whether or not the IC tag 11 has been detected (step S1-2). Here, when the embedded tag 10 containing the IC tag 11 is abandoned at the stopping part of the drift collecting facility 30, the IC tag reader 31 detects the IC tag 11 in order to receive the data transmitted from the IC tag 11. ("YES" in step S1-2). Further, when the embedded tag 10 including the IC tag 11 is not stranded at the stopping part of the drift collecting facility 30, the transmission from the IC tag 11 is not received. In this case, it is determined that the IC tag reader 31 has not detected ("NO" in step S1-2).

  When the IC tag reader 31 detects the IC tag 11 (in the case of “YES” in step S1-2), the transmitter 32 connected thereto transmits a deterioration notification to the deterioration management server 20 via the network. (Step S1-3). The deterioration notification includes the IC tag identifier data received from the IC tag 11.

  The degradation management server 20 that has received the IC tag identifier data identifies the embedding position of the concrete pipe in which the IC tag 11 of the embedding tag 10 that has drifted to the stop portion of the drift collecting facility 30 is embedded (step S1-4). Specifically, the management computer 21 of the deterioration management server 20 extracts the IC tag embedded position data 220 including the received IC tag identifier data from the IC tag embedded position data storage unit 22. And based on this IC tag embedding position data 220, the sewer piping identifier and position of the embedding tag 10 are specified.

  Next, the management computer outputs an alarm (step S1-5). Specifically, the management computer terminal (not shown) displays the position of the sewer pipe 100 of the embedded tag 10 that has flowed into the drift collecting facility 30 or emits a warning sound. Thereby, the sewer piping 100 in which deterioration has occurred can be specified.

According to this embodiment, the following effects can be obtained.
In the present embodiment, a plurality of embedded tags 10 are embedded in the vicinity of the surfaces of the sewage main pipe 101 and the manhole pipe 102. Data relating to an IC tag identifier for identifying the IC tag 11 is stored. If the sewage main pipe 101 and the manhole pipe 102 deteriorate, the embedded tag 10 embedded under the influence is exposed to the surface and is released from the sewage main pipe 101 and the manhole pipe 102. Then, the free buried tag 10 is floated and spilled in the sewage of the sewer pipe 100. Then, it drifts to the drift recovery facility 30 provided with the IC tag reader 31 and is detected. Thereby, deterioration of the sewage main pipe 101 and the manhole pipe 102 can be detected.

  In the present embodiment, the degradation management server 20 includes an IC tag embedded position data storage unit 22 in which IC tag embedded position data 220 is recorded. The IC tag embedment position data 220 includes data related to an IC tag identifier, a sewer pipe identifier, and a position. For this reason, the place where degradation has occurred can be identified based on the sewer piping identifier and the position recorded in association with the IC tag identifier stored in the IC tag 11 that has drifted.

  In the present embodiment, when the IC tag reader 31 detects the IC tag 11, the transmitter 32 connected to the IC tag reader 31 receives the IC tag identifier data received from the IC tag 11 via the network. 20 (step S1-3). For this reason, when the buried tag 10 drifts to the drift collecting facility 30, the deterioration can be notified promptly.

  In the present embodiment, deterioration of the sewage main pipe 101 and the manhole pipe 102 constituting the sewer pipe 100 is performed by detecting the IC tag 11. For this reason, the IC tag 11 pushed into the sewage treatment plant by the sewage flowing through the sewer pipe 100 can be efficiently detected.

(Second Embodiment)
In this embodiment, the form which grasps | ascertains a deterioration condition in the wharf as a structure with possibility of deterioration is demonstrated using FIG.7 and FIG.8. In the following embodiments, the same parts as those in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. In the first embodiment, the buried tag 10 that has left and drifted away from the structure is detected. However, in this embodiment, the buried tag 10 that has become detached and cannot be detected is detected.

  In this embodiment, the wharf 200 is comprised with the concrete containing a reinforcing bar. As shown in FIG. 7, in the concrete part C of the pier 200, the upper part is exposed rather than the sea surface in order to make a ship berth. The sea surface side of the concrete portion C of the pier 200 is exposed to waves and the like. A plurality of embedded tags 10 are embedded in the vicinity of the surface of the concrete portion C. Further, in the concrete part C of the pier 200, an antenna part 201 is embedded in a mesh shape as a radio wave transmitting means in order to detect the embedded tag 10.

  The antenna unit 201 is connected to the notification device 202. The notification device 202 includes an IC tag reader unit and a communication unit. The IC tag reader unit of the notification device 202 periodically transmits a radio wave having a predetermined frequency via the antenna unit 201. Then, the IC tag reader part detects the IC tag 11 of the embedded tag 10 embedded in the concrete part C of the wharf 200. Further, the communication unit of the notification device 202, like the transmitter 32 of the first embodiment, transmits the data of the IC tag 11 detected by the IC tag reader unit of the notification device 202 via the network. Send to.

  Similar to the first embodiment, the degradation management server 20 of the present embodiment includes a management computer 21 and an IC tag embedded position data storage unit 22 connected thereto. In the present embodiment, the management computer 21 and the notification device 202 function as a wireless tag detection unit.

  Further, the IC tag embedded position data storage unit 22 stores IC tag embedded position data 220. In the present embodiment, the IC tag embedded position data 220 includes data related to the IC tag identifier, the wharf identifier, and the position. In the wharf identifier data area, data relating to an identifier for specifying the wharf in which the IC tag is embedded is recorded. In the position identifier data area, data relating to the position where the IC tag is embedded in the wharf 200 is recorded. In this position data area, data relating to the position (for example, “central block portion”) on the wharf 200 in which the IC tag is embedded is recorded.

  Next, the processing procedure in the case of grasping the deterioration state of the concrete at the wharf according to this embodiment will be described with reference to FIG. In the present embodiment, it is assumed that the concrete of the wharf 200 is eroded by seawater. In this case, the embedded tag 10 embedded in the eroded concrete part C flows out of the pier 200, or the IC tag 11 of the embedded tag 10 breaks down and does not respond.

  The IC tag reader unit of the notification device 202 embedded in the wharf 200 periodically reads the IC tag 11 (step S2-1). Specifically, the IC tag reader unit of the notification device 202 attempts to detect the presence or absence of the IC tag 11 by transmitting a radio wave having a predetermined frequency. In the present embodiment, since a plurality of IC tags 11 are embedded in the pier 200, the IC tag reader unit of the notification device 202 executes processing for sequentially reading the IC tags 11 for each IC tag identifier.

  The IC tag reader unit of the notification device 202 determines whether or not the IC tag 11 has responded to the radio wave transmitted for sequentially reading (step S2-2). Here, when the concrete part C which comprises the wharf 200 does not have deterioration, the buried tag 10 buried does not flow out. In this case, the embedded tag 10 in the concrete part C remains, and each IC tag 11 responds to the radio wave received from the IC tag reader part of the notification device 202. In this case (in the case of “YES” in step S2-2), the IC tag reader unit of the notification device 202 determines whether or not all the IC tags 11 have been called (step S2-3). Specifically, the IC tag reader unit records data related to all IC tag identifiers to be read, and records a read completion flag for each reading. If the calling of all the IC tags 11 has not been completed, the IC tag reader unit of the notification device 202 repeatedly executes the reading process after step S2-1 on the next IC tag 11. .

  On the other hand, when the concrete portion C constituting the wharf 200 is deteriorated and the embedded tag 10 is detached and flows out, or when it does not respond due to the influence of deterioration, the IC tag 11 of this embedded tag 10 is used. Cannot respond. Therefore, the IC tag reader unit of the notification device 202 cannot receive data from the IC tag 11. In this case (in the case of “NO” in step S2-2), the communication unit of the notification device 202 transmits a deterioration notification to the deterioration management server 20 via the network (step S2-4). The deterioration notification includes data related to the IC tag identifier that could not be received by the IC tag reader unit of the notification device 202.

  The degradation management server 20 that has received the degradation notification specifies the embedded position of the IC tag 11 using the IC tag identifier data included in the degradation notification (step S2-5). Specifically, the management computer 21 of the deterioration management server 20 extracts the IC tag embedded position data 220 including the received IC tag identifier data from the IC tag embedded position data storage unit 22. And based on this IC tag embedding position data 220, the wharf 200 of the embedding tag 10 of the IC tag 11 and the position where the IC tag 11 is embedded in the wharf 200 are specified.

  Next, the management computer outputs an alarm (step S2-6). More specifically, the management computer terminal (not shown) displays the position of the embedded tag 10 of the IC tag 11 on the wharf 200 that has flowed out or cannot respond, or emits a warning sound. Thereby, the eroded wharf 200 and its position can be specified.

According to this embodiment, the following effects can be obtained.
In the present embodiment, a plurality of embedded tags 10 are embedded in the vicinity of the surface of the concrete portion C of the pier 200. Further, in order to detect the embedded tag 10, the antenna unit 201 is embedded in a mesh shape in the concrete portion C of the wharf 200. Then, the IC tag reader unit of the notification device 202 embedded in the wharf 200 periodically performs the reading process of the IC tag 11. Thereby, it is possible to grasp the IC tag 11 that has flowed out or cannot respond due to the deterioration of the concrete portion C. In the case of the first embodiment, it may take time until the embedded tag 10 drifts, but in the case of this embodiment, it is possible to detect deterioration during the reading process of the IC tag 11.

  In the present embodiment, the degradation management server 20 includes an IC tag embedded position data storage unit 22 in which IC tag embedded position data 220 is recorded. The IC tag embedded position data 220 includes data related to the IC tag identifier, the wharf identifier, and the position. For this reason, it is possible to identify the place where the deterioration has occurred based on the wharf and position recorded in association with the IC tag identifier stored in the IC tag 11 that has flowed out or cannot respond.

(Third embodiment)
Next, the case where the present invention is embodied in order to grasp the deterioration state of the caisson constituting the breakwater will be described with reference to FIG.

  As shown in FIG. 9, the caisson 300 of the present embodiment is made of concrete in a rectangular parallelepiped shape, and has a pair of elongated holes extending in the long axis. Each long hole is filled with sand 301 in which a plurality of embedded tags 10 are mixed. Further, a plurality of embedded tags 10 are embedded in the vicinity of the surface of the caisson 300 on the sea side. The caisson 300 is transported to the installation site and installed side by side. At this time, sand 301 in which the embedded tag 10 is embedded flows into the long hole of the caisson 300. A plurality of wave-dissipating blocks are arranged on the sea side of the caisson 300 to complete the installation.

  Also in the present embodiment, the embedded tag 10 of the caisson 300 is managed by the deterioration management server 20. The degradation management server 20 includes a management computer 21 and an IC tag embedded position data storage unit 22 in which IC tag embedded position data 220 is recorded, as in the above embodiment. In the present embodiment, the management computer 21 and a notification device described later function as a wireless tag detection unit.

  In this embodiment, the IC tag burying position data 220 is recorded when the caisson 300 is installed. The IC tag embedded position data 220 includes data related to an IC tag identifier, a caisson identifier, and a position. In the caisson identifier data area, data relating to an identifier for specifying the caisson 300 in which the IC tag is embedded is recorded. The installation location of the caisson 300 can be specified using an installation position data storage unit (not shown) in which the caisson identifier and the installation location (for example, latitude, longitude, etc.) are recorded in association with each other.

  In the locator data area, data relating to the position where the IC tag is embedded is recorded. In this position data area, data relating to the position in the caisson 300 where the IC tag is embedded (for example, “in the sand of a long hole on the sea side”, “near the concrete surface”, etc.) is recorded.

  Thereafter, when a crack is generated from the vicinity of the surface of the caisson 300 for some reason, the buried tag 10 in the vicinity of the surface flows out to the sea. When the crack reaches the sand 301 filled in the long hole of the caisson 300, the buried tag 10 mixed with the sand flows out into the sea.

Then, it periodically circulates around the caisson 300 and tries to detect the buried tag 10 that is floating. In this case, a notification device including an IC tag reader unit and a communication unit is used. When the embedded tag 10 that has flowed out of the caisson 300 is floating, the IC tag reader unit acquires the IC tag identifier data of the IC tag 11 of the embedded tag 10. The communication unit transmits the IC tag identifier data acquired by the IC tag reader unit to the deterioration management server 20. The degradation management server 20 extracts the corresponding IC tag embedded position data 220 from the IC tag embedded position data storage unit 22 based on the acquired IC tag identifier data, and outputs an alarm for the extracted caisson 300 and its position. At this time, information regarding the installation location of the extracted caisson 300 and the embedded location of the IC tag is output.

According to this embodiment, the following effects can be obtained.
In the present embodiment, the embedded tag 10 is mixed in the sand 301 near the concrete surface of the caisson 300 or inside. For this reason, when the floating embedded tag 10 is detected, the deterioration of the caisson 300 can be grasped.

  In the present embodiment, the degradation management server 20 includes an IC tag embedded position data storage unit 22 in which IC tag embedded position data 220 is recorded. The IC tag embedded position data 220 includes data related to an IC tag identifier, a caisson identifier, and a position. For this reason, it is possible to identify the place where the degradation has occurred based on the caisson and the position recorded in association with the IC tag identifier stored in the IC tag 11 that has detected the outflow.

  In the present embodiment, the embedded tag 10 is mixed in the sand 301 near the concrete surface of the caisson 300 or inside. That is, the embedded tag 10 is embedded in a plurality of areas. The IC tag embedded position data storage unit 22 stores data relating to the position in association with the IC tag identifier. The position of the embedded tag 10 affected by the deterioration state is different. Specifically, when the detected IC tag 11 is filled in the sand 301, it can be seen that the deterioration of the caisson 300 occurs not only on the surface but also in the portion filled with the sand 301. For this reason, the deterioration state (crack state) of the caisson 300 can be grasped based on the IC tag identifier of the buried tag 10 that flows out.

Further, the above embodiments may be modified as follows.
In each of the above embodiments, the embedded tag 10 is embedded in the sewer pipe 100, the pier 200, and the caisson 300. The embedded tag 10 is not limited to being embedded in these structures, but may be disposed by pasting or the like.

  In each of the above embodiments, the embedded tag 10 is embedded in the sewer pipe 100, the pier 200, and the caisson 300. The embedding location is not limited to this, and any structure that can be deteriorated is applicable. For example, this structure may be applied to road asphalt or concrete. In this case, the IC tag embedded position data 220 in the IC tag embedded position data storage unit 22 includes an IC tag identifier and data related to the position where the IC tag 11 is embedded. If the road surface has been dug, the embedded tag 10 will flow out. The embedded tag 10 is collected by a road cleaning vehicle or the like and detected by an IC tag reader. And based on this IC tag identifier, the position of the road where degradation has occurred can be grasped.

  In each of the above embodiments, data related to the position where the IC tag is embedded (arrangement position data) is specified using the IC tag embedded position data 220 corresponding to the IC tag identifier data. Instead, the arrangement position data may be recorded on the IC tag 11 and the arrangement position data may be directly acquired from the IC tag 11 and specified. As a result, when the buried tag 10 that has flowed out is acquired, it is possible to grasp the position where the deterioration has occurred based on the information recorded in the IC tag 11 of the buried tag 10.

In the first embodiment, the embedded tag 10 is embedded in the sewer pipe 100. And the buried tag 10 which flowed out by the drift collection equipment 30 of a sewage treatment plant was detected. When the embedded tag 10 can drift to a predetermined location according to the flow, a device for detecting the embedded tag 10 is provided at that location. For example, you may detect in the place where the manhole pipe 102 and the sewer piping 100 merge. In this case, the number of IC tag readers 31 needs to be increased, but deterioration can be detected more quickly.

  In the first embodiment, the IC tag reader 31 reads the IC tag identifier from the embedded tag 10 detected by the drift collection facility 30. The data read by the IC tag reader 31 is not limited to the IC tag identifier. For example, the current status data may be periodically recorded in the embedded tag 10 and the current status data may be read by the drift recovery facility 30. Here, the current status data includes, for example, current date / time data. In this case, the sewage main pipe 101 and the manhole pipe 102 (structure) constituting the sewer pipe 100 are provided with radio wave writing means for writing the current date and time data in the embedded tag 10 by radio. Then, a radio signal is periodically transmitted from the radio wave writing means, and the date and time (current date and time) at that time is written in the IC tag 11 of the embedded tag 10. At this time, when there is a date and time already written in the IC tag 11, the radio wave writing means writes a new current date and time on the date and time and overwrites and updates it. That is, when the embedded tag 10 is attached to a position where the radio wave writing means receives a radio wave, for example, a structure, the date / time data is updated. On the other hand, when the embedded tag 10 is detached from a position where no radio wave is received from the radio wave writing means, for example, the structure, the date / time data is not updated. Therefore, it can be seen that the embedded tag 10 was attached to the structure until the date and time when the data was acquired from the embedded tag 10 that had flowed out, and the embedded tag 10 was not subjected to deterioration of the structure. Therefore, the deterioration management server 20 uses the date and time data recorded in the detached embedded tag 10 to determine the approximate time when the embedded tag 10 has detached from the sewer main pipe 101 and the manhole tube 102, that is, the structure. It is possible to grasp the approximate time when deterioration has occurred.

  Further, the current status data recorded in the embedded tag 10 may be data other than the current date and time, for example, data related to an index (pH value) indicating the temperature and the concentration of hydrogen ions. Also, the number of data recorded in the embedded tag 10 is not limited to one, but may be a plurality of current status data. Specifically, measuring means for measuring the temperature, pH value and the like of the situation where the structure is placed is provided on the structure together with the radio wave writing means. Then, the temperature and pH value measured by the structure measuring means are recorded as data in the embedded tag 10 by the radio wave writing means. Then, the data on the temperature and pH value may be read by the drift recovery facility 30. Also in this case, when the embedded tag 10 is attached to the structure, the current status such as temperature and pH value is overwritten and updated, and when the embedded tag 10 is detached due to deterioration or the like, the data is updated. The Therefore, it can be seen that the situation such as the temperature and pH value of the structure when the buried tag 10 that has flowed out is removed. Therefore, the deterioration state of the structure can be grasped more accurately.

  Further, the radio wave writing means for writing the current status data to the embedded tag 10 described above may be separate from the structure. For example, radio wave writing means for writing date / time data to the embedded tag 10 may be moved along the sewer pipe 100 while writing the current date / time to the IC tag. Also in this case, date / time data can be written in each of the structures.

1 is a system schematic diagram according to a first embodiment of the present invention. Explanatory drawing explaining the structure of the sewer piping in 1st Embodiment. The block diagram of the floating tag used for embodiment. Explanatory drawing of the data recorded on IC tag embedding position data storage part. Explanatory drawing which shows the outflow state of the floating tag of 1st Embodiment. The flowchart for demonstrating the process sequence of 1st Embodiment. The system schematic in 2nd Embodiment. The flowchart for demonstrating the process sequence of 2nd Embodiment. The system schematic in 3rd Embodiment. Explanatory drawing for demonstrating the inside of the sewer piping in a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Embedded tag as a wireless tag, 20 ... Data storage part, 20 ... Deterioration management server, 21 ... Management computer, 22 ... IC tag embedded position data storage part, 100 ... Sewer piping as structure, 200 ... As structure Pier 300, caisson as a structure.

Claims (12)

  A structure in which a wireless tag is arranged at a position that is affected when the structure deteriorates.   The structure according to claim 1, wherein data related to a position identifier for specifying a position arranged for each wireless tag is recorded in the wireless tag.   The structure according to claim 1, further comprising radio wave transmission means for detecting the wireless tag.   The structure according to claim 1, further comprising radio wave writing means for writing data relating to a current situation to the wireless tag.   The said wireless tag is provided with the waterproof structure, The structure as described in any one of Claims 1-4 characterized by the above-mentioned. A wireless tag having a wireless tag identifier recorded thereon;
A structure in which the wireless tag is disposed at a position where the structure is detached when the structure deteriorates;
A structure deterioration detection system including a wireless tag detection means for detecting the wireless tag,
A deterioration position specifying means for specifying a position recorded in association with the wireless tag identifier when the wireless tag detection means detects a wireless tag detached from the structure and acquires a wireless tag identifier of the wireless tag; ,
A structure deterioration detection system comprising deterioration information output means for outputting the specified position as deterioration information. In the wireless tag, arrangement position data is recorded as a wireless tag identifier,
The said degradation position specific | specification means specifies a degradation position based on the arrangement | positioning position data recorded on the radio | wireless tag which the said radio | wireless tag detection means detected the detachment | leave from the said structure. Structure deterioration detection system. The structure further includes a radio wave transmission means for detecting the wireless tag,
The wireless tag detection means reads the wireless tag arranged on the structure using the radio wave transmission means, and detects the wireless tag that could not be read as a detached wireless tag. 7. The structure deterioration detection system according to 7. Further comprising radio wave writing means for writing data relating to the current situation to the wireless tag,
8. The structure deterioration detection system according to claim 6 or 7, wherein the wireless tag detection means specifies a deterioration state based on a state recorded in a wireless tag that has detected detachment from the structure. . The wireless tag has a waterproof structure,
The structure deterioration detection system according to any one of claims 6 to 9, wherein the wireless tag detection unit detects a wireless tag that has flowed out by a fluid in contact with the structure. The structure is a pipe for flowing a fluid,
The structure deterioration detection system according to claim 10, wherein the wireless tag detection unit is provided downstream of a position where the wireless tag is disposed.   When the structure is deteriorated, it is installed at a position where it is detached, and a wireless tag having data storing information on the installation position detects that the structure is detached, thereby detecting the deterioration of the structure. A structure deterioration detection method characterized by the above.

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