JP7190128B2 - Structure inspection system - Google Patents

Description

The present invention relates to a structure inspection system.

Patent Literature 1 listed below describes an invention relating to a structure operation support system. This structure operation support system has a sheet-like system with carbon wiring and sensors (detection units), and detection signals output from the sensors are sent to a server and a monitoring terminal device via a communication network. It has become so.

JP 2018-22687 A

However, in the prior art described in Patent Document 1, data based on the detection signal output from the sensor is only stored in the server or displayed on the monitor of the monitoring terminal device, and the signal output from the sensor is is not available on site.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure inspection system that can utilize a detection signal output from a detection unit on site.

A structure inspection system according to a first aspect includes a detection unit capable of detecting a state of a structure, and a detection signal provided in the structure and output from the detection unit based on a measurement value by the detection unit. is input and can output a first signal based on the detection signal; and a second integrated section capable of outputting two signals, wherein a plurality of the first integrated sections are connected to one of the second integrated sections, and the second integrated section is connected to the structure. A plurality of them are arranged in the longitudinal direction or the lateral direction of the structure, and are capable of inputting and outputting the second signal to each other.

According to the structure inspection system according to the first aspect, the state of the structure can be measured by a plurality of detection units, and the detection unit outputs a detection signal based on the measurement value by the detection unit. is output. Further, the detection signal is input to the first accumulation section provided in the structure, and the first signal is output from the first accumulation section.

Here, in this aspect, the structure is provided with the second accumulation portion, and a plurality of first accumulation portions are connected to one second accumulation portion. Therefore, the first signals are input from the plurality of first accumulation units to the second accumulation unit, and the measured values obtained by the plurality of detection units can be collected in the second accumulation unit.

A plurality of the second stacking units are arranged in the longitudinal direction of the structure or in the lateral direction of the structure, and are capable of inputting and outputting the second signal to each other. Therefore, it is possible to share the measurement values obtained by the plurality of detection units among the plurality of second accumulation units.

A structure inspection system according to a second aspect is the structure inspection system according to the first aspect, in which the state of the structure is estimated based on the parameters obtained from the accumulated data and the measured values. A possible state estimator comprises the second accumulator.

According to the structure inspection system according to the second aspect, the state estimation section is configured to include the second accumulation section. This state estimator can estimate the state of the structure based on the parameters and measured values obtained from the accumulated data. Therefore, the state estimating unit can collect the measured values at a plurality of locations in a wide range of the structure and estimate the state of the structure.

A structure inspection system according to a third aspect is the structure inspection system according to the second aspect, wherein a notification unit is electrically connected to each of the second accumulation units, and the state estimation unit The unit is capable of specifying the detection unit at a location where it is estimated that an abnormality has occurred in the structure, and when it is estimated that an abnormality has occurred in the structure, the detection unit The notification unit electrically connected to the second accumulation unit to which the first signal based on the detection signal from the unit is input is operable.

According to the structure inspection system according to the third aspect, the reporting unit is electrically connected to each of the plurality of second accumulation units. On the other hand, when estimating that an abnormality has occurred in the structure, the state estimating unit specifies the detection unit at the location where it is estimated that the abnormality has occurred in the structure. The reporting unit electrically connected to the second integration unit to which the first signal based on the detection signal from the detection unit at the location where the abnormality is estimated to occur in the structure is input is the state estimation unit. operated by Therefore, when an abnormality occurs in a structure, it is possible to notify the location of the abnormality in the structure.

A structure inspection system according to a fourth aspect is the structure inspection system according to the third aspect, wherein the notification unit estimates that an abnormality has occurred in the structure by the state estimation unit. In this case, it is a light emitting part that emits light by being supplied with power from the second stacking part.

According to the structure inspection system according to the fourth aspect, when it is estimated that an abnormality has occurred in the structure by the state estimation unit, the location where the abnormality is estimated to occur in the structure , the light-emitting unit emits light to notify the abnormality of the structure. Therefore, the observer can quickly recognize the location of the abnormality in the structure at the site.

As described above, the structure inspection system according to the present invention has the excellent effect that the detection signal output from the detection unit can be used on site.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows schematic structure of the inspection system of the structure which concerns on this embodiment. FIG. 5 is a development view showing a state in which the structure inspection system according to the present embodiment is installed in a tunnel, and schematically showing the arrangement of sensors and the like when the inner peripheral surface of the tunnel is developed in a plane. 1 is a block diagram showing a schematic configuration of a structure inspection system according to an embodiment; FIG. 4 is a flowchart showing an example of processing performed at an edge node in the structure inspection system according to the present embodiment; 4 is a flowchart showing an example of processing performed by a gateway in the structure inspection system according to the present embodiment; 4 is a flowchart showing an example of processing performed by a server in the structure inspection system according to the present embodiment; FIG. 2 is a partial cross-sectional view schematically showing the configuration of a wiring sheet that constitutes a part of the structure inspection system according to the present embodiment; 1 is a schematic diagram showing a state in which a structure inspection system according to the present embodiment is installed in a tunnel; FIG. It is a schematic diagram which shows the state by which the inspection system of the structure which concerns on the modified example of this embodiment was installed in the bridge. FIG. 10 is a plan view showing a state in which the structure inspection system according to a modification of the present embodiment is installed on a bridge, and schematically showing the arrangement of sensors and the like when the bridge is viewed from below.

An example of an embodiment of a structure inspection system and a structure inspection method using the same according to the present invention will be described below with reference to FIGS. 1 to 10. FIG.

As shown in FIG. 8, an "inspection system 10" as a structure inspection system according to the present embodiment includes a plurality of seat units arranged along an inner peripheral surface 12A of a "tunnel 12" as a structure. 14 and "gateways 16" as a plurality of second stacking units respectively arranged between adjacent seat units 14. As shown in FIG.

As also shown in FIG. 7, the sheet unit 14 includes edge nodes 18 and 20, a wiring sheet 22 and an insulating sheet 24. As shown in FIG. Edge nodes 18 and 20 function as loads in seat unit 14 .

The wiring sheet 22 is made of a conductive and flexible material whose main material is carbon, specifically graphene, graphite, single-layered or multi-layered carbon nanotubes, and the like. linear or plate-like. The wiring sheet 22 is electrically connected to the edge nodes 18 and 20 and functions as signal lines and power supply lines for the edge nodes 18 and 20 . The wiring sheet 22 may be made of metal such as copper depending on the environment in which the sheet unit 14 is arranged. Also, the wiring sheet 22 is electrically connected to an existing power supply line (not shown) that supplies power to a lighting device (not shown) arranged in the tunnel 12 .

On the other hand, the insulating sheet 24 is made of an electrically insulating and flexible material, more specifically, an insulating organic polymer such as polyvinyl chloride resin. It has a rectangular plate shape in plan view along the direction. Inside the insulating sheet 24, the wiring sheet 22 is embedded except for a portion of the wiring sheet 22 required for connection to the outside.

In this embodiment, as an example, the seat units 14 are arranged at intervals of about 10 [m] in the longitudinal direction of the tunnel 12 .

Here, in this embodiment, as shown in FIGS. 1 and 2, the seat unit 14 is provided with a plurality of edge nodes 18 and edge nodes 20 that are continuous in the longitudinal direction of the seat unit 14. has the first characteristic. Moreover, in this embodiment, a second feature is that a plurality of gateways 16 are arranged in the tunnel 12 and the gateways 16 can communicate with each other. A third feature is that the gateway 16 is connected to a "light emitting section 74" as a notification section. The configurations of the edge nodes 18 and 20, the gateway 16, and the light emitting unit 74, which constitute the essential parts of this embodiment, will be described in detail below.

As shown in FIG. 3, the edge node 18 includes a "strain sensor 26" as a detection section, a "control section 28" as a first integration section, and a signal processing section 30. As shown in FIG.

The strain sensor 26 includes a strain gauge (not shown) attached to the inner peripheral surface 12A of the tunnel 12, and measures the magnitude of the strain generated at the portion of the tunnel 12 to which the strain gauge is attached. In response, a “detection signal V1 (voltage)” can be output to the control section 28 .

As an example, the control unit 28 is configured by mounting a CPU (Central Processing Unit) and the like on a board (not shown), and is electrically connected to the signal processing unit 30 via the wiring sheet 22 . As shown in FIG. 7, the control unit 28 has a case 32 made of a resin having electrical insulation and weather resistance. . A control unit 28 is attached to the surface of the insulating sheet 24 .

Also, the control unit 28 can evaluate the soundness of the strain sensor 26 . Specifically, the control unit 28 includes ROM (Read Only Memory) and RAM (Random Access Memory), which are not shown. The upper and lower limit values of the output value of the strain sensor 26 are stored in the ROM. If it does not fall within the interval, the detection signal V1 is stored in the RAM as an error. When the detection signal V1 falls between the upper limit value and the lower limit value stored in the ROM, the detection signal V1 is stored in the RAM as the measurement value of the strain sensor 26. .

As an example, the signal processing unit 30 is configured to be capable of removing noise in an input signal, and includes a low-pass filter configured by mounting capacitors, resistors, etc., not shown, on a board, not shown. . The signal processing section 30 has a case (not shown) that covers the electronic equipment that constitutes the signal processing section 30 in the same manner as the control section 28 , and is attached to the surface of the insulating sheet 24 .

In the edge node 18 configured as described above, when the detection signal V1 stored in the RAM of the control unit 28 is an error, the detection signal V1 is sent to the gateway 16 as an error signal. is not an error, the detection signal is input to the signal processing unit 30 and output as a correction signal (correction data) to the gateway 16 in a state where noise is removed. In the following, the signal output from the edge node 18 to the gateway 16 will be referred to as the "first signal 34" regardless of whether it is an error signal or a correction signal.

On the other hand, the edge node 20 includes a "strain sensor 36", a "salinity sensor 38", and a "potential sensor 40" as detection units, a "control unit 42" as a first integration unit, and a signal processing unit 44. I have. Among them, the control section 42 has basically the same configuration as the control section 28, the strain sensor 36 has the same configuration as the strain sensor 26, and the signal processing section 44 has the same configuration as the signal processing section 30, respectively. Note that the strain sensor 36 is capable of outputting a “detection signal V2 (voltage)” to the control section 42 . Moreover, the strain sensors 26 and 36 are arranged at predetermined intervals along the longitudinal direction of the seat unit 14 (the circumferential direction of the tunnel 12).

The salinity sensor 38 can measure the salinity of the water on the inner peripheral surface 12A of the tunnel 12 and output a "detection signal V3 (voltage)" to the control unit 42 according to the salinity. A moisture sensor (not shown) is connected to the salinity sensor 38, and the salinity sensor 38 is activated by a detection signal output when the moisture sensor detects moisture on the inner peripheral surface 12A of the tunnel 12. It's like

The potential sensor 40 is capable of measuring a potential difference between a reference electrode (not shown) provided on the concrete forming the tunnel 12 and a reinforcing bar 46 (see FIG. 2) of the tunnel 12, and outputs a "detection signal" according to the potential difference. V4 (voltage)” can be output to the control unit 42 .

Like the control unit 28, the control unit 42 can also evaluate the soundness of the strain sensor 36, the salinity sensor 38, and the potential sensor 40. Specifically, the ROM of the control unit 42 stores the upper limit value and the lower limit value of the output value of each sensor that outputs the detection signal to the control unit 42 . If the detection signals input from the strain sensor 36, the salinity sensor 38, and the potential sensor 40 do not fall within the respective upper and lower limit values stored in the ROM, the control unit 42 , the detection signal is stored in the RAM as an error. When these detection signals fall between the upper limit value and the lower limit value stored in the ROM of the control unit 42, the detection signal is stored in the RAM as the measured value of each sensor. It's becoming

In the edge node 20 configured as described above, when the detection signal stored in the RAM of the control unit 42 is an error, the detection signal is transmitted to the gateway 16 as an error signal. If there is no error, the detection signal is input to the signal processing unit 44 to remove noise, and then input to the gateway 16 as a correction signal (correction data). In the following, the signal input from edge node 20 to gateway 16 will be referred to as "first signal 48" regardless of whether it is an error signal or a correction signal.

Next, the configuration of the gateway 16 will be described. The gateway 16 includes a control unit 50, a communication unit 52, a storage unit 54, and a case 56 (see FIG. 8) that accommodates these components and is made of resin having electrical insulation and weather resistance.

As an example, the control unit 50 is configured by mounting a CPU and the like on a substrate (not shown), and also controls the control unit 28 of the edge node 18 and the edge node via the wiring sheet 22 and the cable 58 (see FIG. 8). 20 is electrically connected to the control unit 42 . The first signals 34 and 48 can be input to the controller 50 . Note that the cable 58 is also used as a power supply line to the gateway 50 .

The communication unit 52 is electrically connected to the control unit 50 via a wiring unit (not shown) or the like, and signal input/output and the like can be performed between the communication unit 52 and the control unit 50 . In addition, the communication unit 52 includes, for example, an antenna (not shown) and the like, and can communicate with the external server 60 via a network such as a wireless LAN.

The storage unit 54 includes a RAM and a ROM (not shown), and is electrically connected to the control unit 50 and the communication unit 52 via wiring units (not shown) and the like. By inputting the first signals 34 and 48 from the control units 28 and 42 to the RAM of the storage unit 54, the measurement values including the error of each sensor and the identification signal of the sensor that output the error are temporarily stored. is stored in Note that the measured values of each sensor stored in the storage unit 54 are transmitted to the external server 60 via the communication unit 52 and stored in the external server 60 when a control signal is input from the control unit 50. It's like

A vibration sensor 62 is electrically connected to the controller 50 of the gateway 16 . The vibration sensor 62 includes, for example, an accelerometer or the like, and is capable of outputting a "detection signal V5 (voltage)" to the control unit 50 according to vibrations occurring in the tunnel 12. there is The measured value of the vibration sensor 62 is output to the storage section 54 via the control section 50 and temporarily stored in the RAM of the storage section 54 .

One gateway 16 configured as described above is arranged for one seat unit 14 and is arranged at predetermined intervals in the longitudinal direction of the tunnel 12 . In addition, the control unit 50 of the gateway 16 outputs an instruction signal to the edge nodes 18 and 20 to instruct the measurement by each sensor. Based on the instruction signal, the edge nodes 18 and 20 Measurement by each sensor is started.

The measurement by the vibration sensor 62 connected to the gateway 16 is performed at the same timing as the instruction signal is output from the gateway 16 to the edge nodes 18 and 20 . Further, the measurements of the sensors of the edge nodes 18 and 20 and the vibration sensor 62 are made intermittently. Alternatively, the measurement may be set to be performed every few minutes.

Adjacent gateways 16 among these gateways 16 are electrically connected by cables 58, as shown in FIGS. As a result, these gateways 16 can share the measured values by mutually inputting and outputting the measured values of the respective sensors stored in the RAM of the storage unit 54 as the "second signal 64". ing.

Moreover, in this embodiment, it is possible to perform a simple diagnosis of the tunnel 12 . Specifically, the control unit 50 of the gateway 16 analyzes the relative relationship of the predetermined number of measured values stored in the storage unit 54 .

Then, when the measured value of the same sensor tends to increase, or from the magnitude relationship of the measured values of the same type of sensor measured at the same timing, the control unit 50 determines that an abnormality such as damage has occurred in the tunnel 12. When this occurs, an alarm signal is transmitted from the gateway 16 to the external server 60 .

Furthermore, in the control unit 50 of the gateway 16, the location where an abnormality is estimated to occur in the tunnel 12 from the magnitude relationship of the measurement values of the same type of sensors, such as the strain sensors 26 and 36, measured at the same timing. can be specified. For example, in the strain sensors 26 arranged in a row, the control unit 50 of the gateway 16 detects an abnormality at the location where the strain sensor 26 is provided when the measured value increases as it approaches a specific strain sensor 26. It may be configured to determine that it has occurred. This can also be interpreted that the control unit 50 can identify the strain sensors 26 and 36 that are placed in the tunnel 12 where it is presumed that an abnormality has occurred.

On the other hand, the light emitting unit 74 includes an LED (Light Emitting Diode) 76 , is arranged for all the gateways 16 , and is electrically connected to the gateways 16 with cables 78 . The light emitting unit 74 emits light (lights up) when power is supplied from the gateway 16 via the cable 78 .

Specifically, when the control unit 50 of the gateway 16 estimates that an abnormality has occurred in the tunnel 12, the strain sensors 26 and 36 arranged at the locations where it is estimated that an abnormality has occurred in the tunnel 12 are Power is supplied from the gateway 16 electrically connected via the control units 28 and 42 . As a result, when the control unit 50 of the gateway 16 estimates that an abnormality has occurred in the tunnel 12, the light emitting unit 74 arranged near the location where the abnormality is estimated to occur in the tunnel 12 emits light. It is designed to

On the other hand, when the external server 60 receives the alarm signal from the gateway 16, the alarm is displayed on the monitor 68 of the monitoring computer 66 connected to the external server 60 via a network such as a wireless LAN. (see Figure 1). In addition, when an error is included in the measured values of the sensors transmitted from the gateway 16, the monitor 68 displays the type and location of the sensor outputting the error.

The external server 60 also has a database, in which predictive models corresponding to measured values of various sensors provided at the edge nodes 18 and 20 and the gateway 16 are stored. As this prediction model, the relationship between the measured values such as strain, salt concentration, and potential of each part in a predetermined reinforced concrete structure and the age of the structure, and the reinforced concrete to be measured measured by the above sensor A state prediction model that can predict the state of deterioration of a reinforced concrete structure by collating each state quantity of the structure can be used. Furthermore, this database also stores basic information such as the basic structure of the tunnel 12 and the composition of the materials that make up the tunnel 12, and some of the predetermined parameters used in the state prediction model are included in the basic information. It is designed to be decided on the basis of

In this embodiment, the external server 60 can estimate whether the state of the tunnel 12 is abnormal or normal by comparing the measurement values of each sensor with the prediction model. In other words, in this embodiment, the deterioration state of the tunnel 12 can be determined in the external server 60 . In the following description, the complex of gateway 16, edge nodes 18 and 20, and external server 60 will be referred to as "state estimator 70".

Specifically, the external server 60 compares the measured value of each sensor with the prediction model, and determines whether or not there is an abnormality in the tunnel 12 based on the degree of divergence between the measured value and the prediction model value. It is designed to be When an abnormality is confirmed in the tunnel 12, an abnormality signal 72 is output from the external server 60 to the monitoring computer 66, and a warning is displayed on the monitor 68, as shown in FIG. there is On the other hand, when the external server 60 compares the measurement values of each sensor with the prediction model and no abnormality is confirmed in the tunnel 12, the monitor 68 displays "no abnormality".

(Action and effect of the present embodiment)
Next, the operation and effects of this embodiment will be described.

In this embodiment, as shown in FIG. 1, the strain sensors 26, 36, the salinity sensor 38, the potential sensor 40, and the vibration sensor 62 can measure the state of the tunnel 12. From these sensors, the A detection signal is output based on the measured value by the sensor. Further, the detection signal is input to the control units 28 and 42 provided in the tunnel 12, and the first signals 34 and 48 are output from the control units 28 and 42, respectively.

Here, in this embodiment, the gateway 16 is provided in the tunnel 12 , and a plurality of control units 28 and 42 are connected to one gateway 16 . For this reason, the first signals 34 and 48 are input to the gateway 16 from the plurality of control units 28 and 42, so that the gateway 16 can collect the measured values from the plurality of sensors.

A plurality of gateways 16 are arranged in the longitudinal direction of the tunnel 12 and are capable of inputting and outputting the second signal 64 to each other. Therefore, multiple gateways 16 can share measurement values from multiple sensors.

Moreover, in this embodiment, the state estimator 70 is configured including the gateway 16 . This state estimator can estimate the state of the tunnel 12 based on the parameters and measured values obtained from the accumulated data. Therefore, the state estimating unit 70 can aggregate the measurement values of a plurality of locations over a wide range of the tunnel 12 and estimate the state of the tunnel 12 .

Further, in this embodiment, the light emitting unit 74 is electrically connected to each of the plurality of gateways 16 . On the other hand, when the state estimating unit 70 estimates that the tunnel 12 is abnormal, the state estimating unit 70 identifies the sensor at the location where the tunnel 12 is estimated to be abnormal. Then, the light emitting unit 74 electrically connected to the gateway 16 to which the first signal 48 based on the detection signal from the sensor in the tunnel 12 estimated to be abnormal is input, is connected to the state estimating unit 70. operated by Therefore, when an abnormality occurs in the tunnel 12, the location of the abnormality in the tunnel 12 can be notified.

In addition, in the present embodiment, when the state estimating unit 70 estimates that an abnormality has occurred in the tunnel 12, the light emitting unit 74 emits light at a location in the tunnel 12 that is estimated to have an abnormality. Then, the abnormality of the tunnel 12 is notified. Therefore, the observer can quickly recognize the location of the abnormality in the tunnel 12 at the site.

Next, an example of the procedure of an inspection method for a structure (tunnel 12) by the inspection system 10 according to this embodiment will be described with reference to flowcharts shown in FIGS. The method for inspecting the tunnel 12 is not limited to the flow charts shown in FIGS. 4 to 6, and other procedures may be used.

First, FIG. 4 will be used to illustrate the control flow of the edge nodes 18,20. When this flow is started, first, in step S100, an instruction signal from the gateway 16 is output to the edge nodes 18, 20. FIG.

Next, in step S102, measurements are performed by the strain sensors 26, 36, the salinity sensor 38, and the potential sensor 40 based on the instruction signal from the gateway 16. FIG.

Next, in step S104, the control units 28 and 42 evaluate the soundness of each sensor based on the measured value of each sensor. are compared.

Next, in step S106, the controllers 28 and 42 determine whether or not the measured values of the sensors include an error (values not within the upper limit and lower limit of each sensor). If it is determined that the measured value of each sensor contains an error, the process proceeds to step S108, and the corresponding measured value is sent to the gateway 16 as an error signal (abnormal value), and other measurements The value is sent to the signal processor 30, 44 and proceeds to step S110. On the other hand, when it is determined that the measured values of each sensor do not contain an error, all the measured values of each sensor are transmitted to the signal processing units 30 and 44, and the process proceeds to step S110.

Next, in step S110, the signal processing units 30 and 44 remove noise from the measured values of the sensors.

Next, in step S112, the denoised sensor measurements are sent from the edge nodes 18, 20 to the gateway 16, and the control flow ends.

Next, the control flow of the gateway 16 will be shown using FIG. When this flow is started, first, in step S200, the gateway 16 outputs an instruction signal instructing the edge nodes 18 and 20 to perform measurement.

Next, in step S202, it is determined whether or not there is an error in the measured values of the sensors input from the edge nodes 18,20. If it is determined that there is an error in the measured values of each sensor, the process proceeds to step S204, the identification signal of the sensor outputting the error is stored in the storage unit 54 of the gateway 16, and the process proceeds to step S206. move on. On the other hand, if it is determined that there is no error in the measured values of the sensors input from the edge nodes 18 and 20, the process proceeds to step S206.

Next, in step S206, the controller 50 of the gateway 16 analyzes the relative relationship between the measured values from the sensors transmitted from the edge nodes 18 and 20. FIG.

Next, in step S208, a simple diagnosis of the tunnel 12 is performed based on the analysis result in step S206. In this simple diagnosis, the tendency of increase and decrease in the measured value of the same sensor and the magnitude relationship of the measured values of the same type of sensor measured at the same timing are compared.

Next, in step S210, it is determined whether or not an abnormality has occurred in the tunnel 12 based on the result of step S208. If it is determined that an abnormality has occurred in the tunnel 12, the process proceeds to step S212, an alarm signal is transmitted from the gateway 16 to the external server 60, and it is estimated that an abnormality has occurred in the tunnel 12. The light-emitting portion 74 arranged near the marked portion is turned on, and the process proceeds to step S214. On the other hand, if it is determined that there is no abnormality in the tunnel 12, the process proceeds to step S214.

Next, in step S214, the gateway 16 transmits the measured values of each sensor to the external server 60, and the above control flow ends.

Next, the control flow of the external server 60 will be shown using FIG. When this flow is started, first, in step S300, it is determined whether an alarm signal is input from the gateway 16 or not. If it is determined that an alarm signal has been input from the gateway 16, the process proceeds to step S302, a warning is displayed on the monitor 68, and the process proceeds to step S304. On the other hand, if it is determined that the alarm signal has not been input from the gateway 16, the process proceeds to step S304.

Next, in step S<b>304 , the measured values of each sensor transmitted from the gateway 16 are stored in the external server 60 .

Next, in step S306, it is determined whether or not the measurement value of each sensor transmitted from the gateway 16 contains an error. If it is determined that the measured values of the sensors transmitted from the gateway 16 contain an error, the process proceeds to step S308, and the type and location of the sensor outputting the error are displayed on the monitor 68. Then, the process proceeds to step S310. On the other hand, if it is determined that the measured values of each sensor transmitted from the gateway 16 do not contain an error, the process proceeds to step S310.

Next, in step S310, the basic information of the tunnel 12 is retrieved from the database.

Next, in step S312, based on the basic information of the tunnel 12, a prediction model corresponding to the measured values of each sensor is called from the database.

Next, in step S314, the measured value of each sensor is compared with the prediction model.

Next, in step S316, it is determined whether or not there is an abnormality in the tunnel 12 based on the result of step S312. If it is determined that there is an abnormality in the tunnel 12, the process proceeds to step S318, an abnormality signal 72 is output from the external server 60 to the monitoring computer 66, and a warning is displayed on the monitor 68. ends. On the other hand, if it is determined that there is no abnormality in the tunnel 12, the process proceeds to step S320, no abnormality is displayed on the monitor 68, and the control flow ends.

As described above, according to the inspection system 10 according to the present embodiment, the detection signal output from the sensor can be used on site.

<Modification of above embodiment>
Moreover, in this embodiment, as shown in FIGS. 9 and 10, it is possible to arrange the inspection system 10 with respect to the "bridge 80" as a structure. Specifically, in this modification, for each of the plurality of main girders 82 of the bridge 80, the seat units 14 are arranged along the longitudinal direction of the main girders 82 (longitudinal direction of the bridge 80). One gateway 16 is located in each of the 82 . Each gateway 16 is provided with a light emitting unit 74 .

In addition, in this modification, the communication unit 52 is shared by a plurality of gateways 16 arranged in the short direction of the bridge 80 (the direction perpendicular to the longitudinal direction of the main girder 82), and the second signal 64 is the same. Input/output is performed between the gateways 16 via one communication unit 52 .

According to such a configuration, the state estimation unit 70 can detect an abnormality in the bridge 80 in the same manner as in the case of the tunnel 12 .

<Supplementary explanation of the above embodiment>
(1) In the above-described embodiment, the data from the edge nodes 18 and 20 are aggregated in the gateway 16, but the present invention is not limited to this. For example, the detection signal of each sensor may be output directly to the gateway 16 according to the functions of the CPU of the controller 50 of the gateway 16 .

(2) In the above-described embodiment, the gateways 16 are connected to each other by the cable 58 , but the configuration is not limited to this, and the gateways 16 may be configured to perform wireless communication using the communication unit 52 . Alternatively, the edge nodes 18 and 20 may be provided with antennas or the like, and wireless communication may be performed between the edge nodes 18 and 20 and the gateway 16 .

(3) Furthermore, in the above-described embodiment, the strain sensor, the salinity sensor, the potential sensor, and the vibration sensor are provided, but sensors other than these may be arranged in the structure. Moreover, the system of each sensor is not limited to the one described above, and sensors of various systems can be employed.

(4) In addition, in the above-described embodiment, the inspection system 10 detects an abnormality in the tunnel 12 and the bridge 80, but if the structure is made of reinforced concrete, the inspection system 10 can detect other types of structures It is also possible to detect abnormalities in

(5) In addition, in the above-described embodiment, the light emitting section 74 is used as the notification section, but an alarm or the like may be used as the notification section.

10 Inspection system (inspection system for structures)
12 Tunnel (structure)
16 gateway (second stacking unit)
26 Strain sensor (detection part)
28 control unit (first stacking unit)
34 first signal 36 strain sensor (detection unit)
38 Salinity sensor (detection part)
40 potential sensor (detection part)
42 control unit (first stacking unit)
48 first signal 64 second signal 70 state estimation unit 74 light emitting unit (informing unit)
80 Bridges (structures)
V1 detection signal V2 detection signal V3 detection signal V4 detection signal V5 detection signal

Claims (4)

a detection unit capable of detecting the state of the structure;
Provided in the structure, a detection signal output from the detection unit is input based on the measurement value by the detection unit, and it is determined whether the detection signal is an abnormal output, a first accumulating unit capable of outputting a first signal as an error signal when the output is abnormal, and outputting the first signal based on the detection signal when the detection signal is not an abnormal output ;
a second integration unit provided in the structure, capable of inputting the first signal and capable of outputting a second signal based on the first signal;
A plurality of the first accumulation portions are connected to one of the second accumulation portions, and the second accumulation portions are arranged in the longitudinal direction of the structure or in the lateral direction of the structure. , capable of inputting and outputting the second signal to each other;
Structure inspection system. A state estimating unit capable of estimating the state of the structure based on the measured values and the parameters obtained from the accumulated data includes the second accumulation unit.
The structure inspection system according to claim 1 . A notification unit is electrically connected to each of the second accumulation units,
The state estimating unit is capable of specifying the detecting unit at a location where it is estimated that an abnormality has occurred in the structure, and when it is estimated that an abnormality has occurred in the structure , the notification unit electrically connected to the second integration unit to which the first signal based on the detection signal from the detection unit is input is operable;
The structure inspection system according to claim 2. The notification unit is a light emitting unit that emits light by being supplied with power from the second integration unit when the state estimation unit estimates that an abnormality has occurred in the structure.
The structure inspection system according to claim 3.

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