WO2020044627A1 - 構造物の点検システム - Google Patents

構造物の点検システム Download PDF

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Publication number
WO2020044627A1
WO2020044627A1 PCT/JP2019/009810 JP2019009810W WO2020044627A1 WO 2020044627 A1 WO2020044627 A1 WO 2020044627A1 JP 2019009810 W JP2019009810 W JP 2019009810W WO 2020044627 A1 WO2020044627 A1 WO 2020044627A1
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WO
WIPO (PCT)
Prior art keywords
unit
signal
sensor
tunnel
gateway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/009810
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English (en)
French (fr)
Japanese (ja)
Inventor
毅 関谷
隆文 植村
徹平 荒木
秀輔 吉本
野田　祐樹
貴康 櫻井
浩 濱田
智之 塚田
直明 河村
堤　知明
瀬下　雄一
周治 井出
慎也 尾藤
崇 金村
理寛 ▲高▼安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Futaba Corp
University of Tokyo NUC
Tokyo Electric Power Services Co Ltd
University of Osaka NUC
Original Assignee
Daikin Industries Ltd
Futaba Corp
Osaka University NUC
University of Tokyo NUC
Tokyo Electric Power Services Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd, Futaba Corp, Osaka University NUC, University of Tokyo NUC, Tokyo Electric Power Services Co Ltd filed Critical Daikin Industries Ltd
Publication of WO2020044627A1 publication Critical patent/WO2020044627A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link

Definitions

  • the present disclosure relates to a structure inspection system.
  • Japanese Patent Application Laid-Open No. 2018-22687 discloses an invention related to a structure operation support system.
  • This structure operation support system includes a sheet-like system including a carbon wiring and a sensor (detection unit), and a detection signal output from the sensor is transmitted to a server or a monitoring terminal device via a communication network. It has become so.
  • a structure inspection system 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 of the detection unit. And a first integrated unit capable of outputting a first signal based on the detection signal, and a first integrated unit provided on the structure, capable of inputting the first signal and based on the first signal.
  • a second integration unit capable of outputting two signals, wherein a plurality of the first integration units are connected to one second integration unit, and the second integration unit A plurality of the second signals are arranged in the longitudinal direction or in the transverse direction of the structure, so that the second signal can be input / output to / from each other.
  • the state of the structure can be measured by the plurality of detection units, and a detection signal is output from the detection unit based on the measurement value of the detection unit. Is output.
  • the detection signal is input to a first integration unit provided in the structure, and the first signal is output from the first integration unit.
  • the structure is provided with the second accumulation unit, and one second accumulation unit is connected to a plurality of first accumulation units.
  • the first signal is input to the second accumulation unit from the plurality of first accumulation units, and the measurement values obtained by the plurality of detection units can be aggregated in the second accumulation unit.
  • the plurality of second integration units are arranged in the longitudinal direction of the structure or in the short direction of the structure, and are capable of inputting and outputting the second signal to and from each other. For this reason, the measurement values of the plurality of detection units can be shared between the plurality of second accumulation units.
  • a structure inspection system is the structure inspection system according to the first aspect, wherein the state of the structure is estimated based on the parameters obtained from accumulated data and the measured values.
  • a possible state estimator is configured to include the second accumulator.
  • the state estimation unit includes the second accumulation unit.
  • the state estimating unit is capable of estimating the state of the structure based on parameters and measurement values obtained from the stored data. For this reason, the state estimation unit can estimate the state of the structure by aggregating the measurement values at a plurality of locations over a wide range of the structure.
  • the structure inspection system 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 is performed.
  • 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 performs the detection.
  • the notification unit electrically connected to the second integration unit to which the first signal based on the detection signal from the unit is input is operable.
  • the notification unit is electrically connected to each of the plurality of second accumulation units.
  • the state estimating unit estimates that an abnormality has occurred in the structure
  • the state estimating unit specifies the detecting unit at a location where it is estimated that an abnormality has occurred in the structure.
  • a notification unit electrically connected to the second accumulation unit to which the first signal based on the detection signal from the detection unit at the location where the abnormality is estimated to have occurred in the structure is provided. Actuated by For this reason, when an abnormality occurs in a structure, it is possible to notify the location where the abnormality occurs in the structure.
  • the notification unit is estimated by the state estimation unit to have an abnormality in the structure.
  • the light emitting unit emits light when supplied with power from the second integrated unit.
  • the state estimating unit estimates that an abnormality has occurred in the structure, a point in the structure where the abnormality is estimated to have occurred.
  • the light emitting unit emits light to notify the abnormality of the structure. For this reason, the observer can quickly recognize the location of the abnormality in the structure at the site.
  • the structure inspection system according to the present disclosure has an excellent effect that the detection signal output from the detection unit can be used on site.
  • FIG. 3 is a development view showing a state where the structure inspection system according to the present embodiment is installed in a tunnel, and schematically showing an arrangement of sensors and the like when an inner peripheral surface of the tunnel is developed in a plane.
  • FIG. 3 is a development view showing a state where the structure inspection system according to the present embodiment is installed in a tunnel, and schematically showing an arrangement of sensors and the like when an inner peripheral surface of the tunnel is developed in a plane.
  • It is a flow chart which shows an example of processing performed in an edge node in a structure inspection system concerning this embodiment.
  • It is a flow chart which shows an example of processing performed by a gateway in a structure inspection system concerning this embodiment.
  • FIGS. 1 to 10 An example of an embodiment of a structure inspection system and a structure inspection method using the same according to the present disclosure will be described with reference to FIGS. 1 to 10.
  • the “inspection system 10” as a structure inspection system includes a plurality of seat units arranged along an inner peripheral surface 12A of a “tunnel 12” as a structure. 14, and a “gateway 16” as a plurality of second accumulation units disposed between adjacent sheet units 14.
  • the sheet unit 14 is configured to include the edge nodes 18 and 20, the wiring sheet 22, and the insulating sheet 24.
  • the edge nodes 18 and 20 function as loads in the seat unit 14.
  • the wiring sheet 22 is a conductor having carbon as a main material and a flexible material, specifically, graphene, graphite, a single-layer or multi-layer carbon nanotube, and the like. A linear shape or a plate shape is exemplified.
  • the wiring sheet 22 is electrically connected to the edge nodes 18 and 20, and functions as a signal line and a power supply line of 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. Further, the wiring sheet 22 is electrically connected to an existing power supply line (not shown) for supplying electric power to lighting and the like (not shown) arranged in the tunnel 12.
  • the insulating sheet 24 is made of a material having electrical insulation and flexibility, specifically, an insulating organic polymer such as a polyvinyl chloride resin. It has a rectangular plate shape in plan view along the direction.
  • the wiring sheet 22 is buried inside the insulating sheet 24 except for a portion necessary for connection with the outside of the wiring sheet 22.
  • the seat units 14 are arranged at intervals of about 10 [m] in the longitudinal direction of the tunnel 12.
  • a plurality of edge nodes 18 and edge nodes 20 are provided on the sheet unit 14 so as to extend in the longitudinal direction of the sheet unit 14.
  • 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 a "light emitting unit 74" as a notification unit is connected to the gateway 16.
  • the edge node 18 includes a “distortion sensor 26” as a detection unit, a “control unit 28” as a first integration unit, and a signal processing unit 30.
  • the strain sensor 26 includes a strain gauge (not shown) attached to the inner peripheral surface 12A of the tunnel 12 and controls the magnitude of the strain generated in the tunnel 12 where the strain gauge is attached. Accordingly, the “detection signal V1 (voltage)” can be output to the control unit 28.
  • control unit 28 is configured by attaching a CPU (Central Processing Unit) to a board (not shown), and is electrically connected to the signal processing unit 30 via the wiring sheet 22.
  • the control unit 28 includes a case 32 made of a resin having electrical insulation and weather resistance, and the above-described CPU and the like are housed inside the case 32. .
  • the control part 28 is attached to the surface of the insulating sheet 24.
  • the control unit 28 can evaluate the soundness of the strain sensor 26.
  • the control unit 28 includes a ROM (Read Only Memory) and a RAM (Random Access Memory) (not shown).
  • the ROM stores the upper limit value and the lower limit value of the output value of the strain sensor 26, and the control unit 28 stores the detection signal V1 input from the strain sensor 26 as the upper limit value and the lower limit value stored in the ROM. Otherwise, the detection signal V1 is stored in the RAM as an error.
  • 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 a measurement value of the strain sensor 26. .
  • the signal processing unit 30 is configured to be able to remove noise of an input signal, and includes a low-pass filter configured by attaching a capacitor, a resistor, and the like (not shown) to a substrate (not shown).
  • the signal processing unit 30 includes a case (not shown) that covers the electronic devices that constitute the signal processing unit 30, similarly to the control unit 28, and is attached to the surface of the insulating sheet 24.
  • the detection signal V1 stored in the RAM of the control unit 28 when the detection signal V1 stored in the RAM of the control unit 28 is an error, the detection signal V1 is transmitted to the gateway 16 as an error signal, and the detection signal V1 Is not an error, the detection signal is input to the signal processing unit 30 and is output to the gateway 16 as a correction signal (correction data) in a state where noise is removed.
  • a signal output from the edge node 18 to the gateway 16 is referred to as a “first signal 34” regardless of whether the signal is an error signal or a correction signal.
  • the edge node 20 includes a “strain sensor 36”, a “salt 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.
  • the control unit 42 has the same configuration as the control unit 28
  • the distortion sensor 36 has the same configuration as the distortion sensor 26
  • the signal processing unit 44 has the same configuration as the signal processing unit 30.
  • the strain sensor 36 can output a “detection signal V2 (voltage)” to the control unit 42.
  • 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 salt sensor 38 is configured to measure the salt concentration of 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 salt concentration.
  • a moisture sensor (not shown) is connected to the salt sensor 38.
  • the salt 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 has become.
  • the potential sensor 40 is capable of measuring a potential difference between a not-shown reference electrode provided on concrete forming the tunnel 12 and a reinforcing bar 46 (see FIG. 2) of the tunnel 12, and detects a “detection signal” according to the potential difference.
  • V4 voltage
  • the control unit 42 can evaluate the soundness of the strain sensor 36, the salt sensor 38, and the potential sensor 40.
  • 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 a detection signal to the control unit 42. Then, in the control unit 42, when the detection signals input from the strain sensor 36, the salt sensor 38, and the potential sensor 40 do not fall between the upper limit value and the lower limit value corresponding to each stored in the ROM.
  • the detection signal is stored in the RAM as an error.
  • the detection signal is stored in the RAM as the measurement value of each sensor. Has become.
  • the detection signal stored in the RAM of the control unit 42 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, and the detection signal is If no error is detected, the detection signal is input to the signal processing unit 44 and is input to the gateway 16 as a correction signal (correction data) in a state where noise is removed.
  • a signal input from the edge node 20 to the gateway 16 is referred to as a “first signal 48” regardless of whether the signal is an error signal or a correction signal.
  • the gateway 16 includes a control unit 50, a communication unit 52, a storage unit 54, and a case 56 (see FIG. 8) in which these are housed and made of a resin having electrical insulation and weather resistance.
  • control unit 50 is configured by attaching a CPU or the like to a board (not shown), and 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 are electrically connected to the control unit 42.
  • the control unit 50 can receive the first signals 34 and 48.
  • 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, so that signals can be input and output between the communication unit 52 and the control unit 50.
  • 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 a wiring unit (not shown).
  • the measurement value including the error of each sensor and the identification signal of the sensor that outputs the error are temporarily stored. Is stored.
  • the measurement value of each sensor stored in the storage unit 54 is transmitted to the external server 60 via the communication unit 52 and stored in the external server 60. It has become.
  • a vibration sensor 62 is electrically connected to the control unit 50 of the gateway 16.
  • the vibration sensor 62 includes, for example, an accelerometer and the like, and is capable of outputting a “detection signal V5 (voltage)” to the control unit 50 according to the vibration generated in the tunnel 12. I have.
  • the measurement value of the vibration sensor 62 is output to the storage unit 54 via the control unit 50, and is temporarily stored in the RAM of the storage unit 54.
  • One of the gateways 16 configured as described above is arranged for one seat unit 14 and is arranged at a predetermined interval in the longitudinal direction of the tunnel 12.
  • the control unit 50 of the gateway 16 outputs an instruction signal for instructing measurement by each sensor to the edge nodes 18 and 20.
  • the edge nodes 18 and 20 receive the instruction signal based on the instruction signal. The 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 when an instruction signal is output from the gateway 16 to the edge nodes 18 and 20. Further, the measurement of each sensor of the edge nodes 18 and 20 and the vibration sensor 62 is performed intermittently. For example, even if the measurement is performed about once a day, it is set. Alternatively, the measurement may be set to be performed every few minutes.
  • the adjacent gateways 16 among these gateways 16 are electrically connected by a cable 58. Accordingly, these gateways 16 can share the measured values by 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.
  • control unit 50 of the gateway 16 analyzes a relative relationship between a predetermined number of measured values stored in the storage unit 54.
  • the control unit 50 determines that the tunnel 12 has an abnormality such as damage due to the case where the measured value of the same sensor is increasing or the magnitude of the measured value of the same sensor measured at the same timing. In this case, a warning signal is transmitted from the gateway 16 to the external server 60.
  • a location where it is estimated that an abnormality has occurred in the tunnel 12 based on the magnitude relationship between the sensors of the same type measured at the same timing, for example, the strain sensors 26 and 36. Can be specified. For example, when the measured value of the strain sensors 26 arranged in series is increased as approaching a specific strain sensor 26, the control unit 50 of the gateway 16 detects an abnormality at a location where the strain sensor 26 is provided. A configuration in which it is determined that an error has occurred may be adopted. This can also be considered that the control unit 50 can specify the strain sensors 26 and 36 disposed at the location where it is estimated that an abnormality has occurred in the tunnel 12.
  • the light emitting unit 74 is configured to include an LED (Light Emitting Diode) 76, is arranged for all the gateways 16, and is electrically connected to the gateway 16 by a cable 78.
  • the light emitting section 74 emits light (lights up) when power is supplied from the gateway 16 via the cable 78.
  • the strain sensors 26 and 36 disposed at the locations where the abnormality is estimated to have occurred in the tunnel 12 are provided.
  • Power is supplied from the gateway 16 which is electrically connected via the control units 28 and 42.
  • the light emitting unit 74 arranged near the place where it is estimated that the abnormality has occurred in the tunnel 12 emits light. It is supposed to.
  • the external server 60 when an alarm signal is input from the gateway 16, a warning 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 FIG. 1).
  • a network such as a wireless LAN.
  • the external server 60 also has a database, and the database stores prediction models corresponding to measurement values of various sensors provided in the edge nodes 18 and 20 and the gateway 16. As this prediction model, the relationship between measured values such as strain, salinity and potential of each part in a predetermined structure made of reinforced concrete and the age of the structure, and the reinforced concrete to be measured by the sensor A state prediction model that can predict the deterioration state of the reinforced concrete structure by comparing each state amount of the structure with the state amount of the structure. Further, this database also stores basic information such as the basic structure of the tunnel 12 and the composition of the material constituting the tunnel 12, and some of the predetermined parameters used in the state prediction model are included in the basic information. It is decided based on.
  • the external server 60 can estimate whether the state of the tunnel 12 is abnormal or normal by comparing the measurement value of each sensor with the prediction model. In other words, in the present embodiment, the deterioration state of the tunnel 12 can be determined in the external server 60.
  • a complex of the gateway 16, the edge nodes 18, 20 and the external server 60 will be referred to as a "state estimating unit 70".
  • the external server 60 compares the measurement value of each sensor with the prediction model, and determines whether there is an abnormality in the tunnel 12 based on the degree of deviation between the measurement value and the value of the prediction model. It is supposed to be. Then, when an abnormality is confirmed in the tunnel 12, as shown in FIG. 1, 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. I have. On the other hand, as a result of comparing the measured values of the sensors with the prediction model in the external server 60, if no abnormality is confirmed in the tunnel 12, the monitor 68 displays that there is no abnormality.
  • the state of the tunnel 12 can be measured by the strain sensors 26 and 36, the salt sensor 38, the potential sensor 40, and the vibration sensor 62.
  • a detection signal is output based on the value measured by the sensor.
  • the detection signal is input to the control units 28 and 42 provided in the tunnel 12, and the control units 28 and 42 output first signals 34 and 48, respectively.
  • the gateway 16 is provided in the tunnel 12, and a plurality of controllers 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, and the gateway 16 can aggregate the measurement values obtained by the plurality of sensors.
  • the gateways 16 are arranged in a plurality in the longitudinal direction of the tunnel 12, and are capable of inputting and outputting the second signal 64 with each other. For this reason, the measurement values of a plurality of sensors can be shared by a plurality of gateways 16.
  • the state estimation unit 70 includes the gateway 16. This state estimating unit is capable of estimating the state of the tunnel 12 based on parameters and measurement values obtained from the stored data. For this reason, the state estimating unit 70 can estimate the state of the tunnel 12 by aggregating the measured values at a plurality of locations in a wide range of the tunnel 12.
  • the light emitting unit 74 is electrically connected to each of the plurality of gateways 16.
  • the state estimating unit 70 estimates that an abnormality has occurred in the tunnel 12
  • the state estimating unit 70 specifies a sensor at a location where it is estimated that an abnormality has occurred in the tunnel 12.
  • 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 at the location where the abnormality is estimated to have occurred in the tunnel 12 is input to the state estimation unit 70 Actuated by For this reason, when an abnormality occurs in the tunnel 12, it is possible to notify the location where the abnormality occurs in the tunnel 12.
  • 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 where it is estimated that an abnormality has occurred in the tunnel 12. Then, the abnormality of the tunnel 12 is notified. For this reason, the observer can quickly recognize the location where the abnormality has occurred in the tunnel 12 at the site.
  • step S100 an instruction signal from the gateway 16 is output to the edge nodes 18 and 20.
  • step S102 measurements are performed by the strain sensors 26 and 36, the salt sensor 38, and the potential sensor 40 based on the instruction signal from the gateway 16.
  • step S104 the soundness of each sensor is evaluated by the control units 28 and 42 from the measured values of each sensor, and the control units 28 and 42 perform the measurement signal of each sensor and the upper and lower limit values of each sensor. Are compared.
  • step S106 the control units 28 and 42 determine whether an error (a value that does not fall between the upper limit value and the lower limit value of each sensor) is included in the measurement value of each sensor. If it is determined that an error is included in the measurement value of each sensor, the process proceeds to step S108, where the corresponding measurement value is transmitted to the gateway 16 as an error signal (abnormal value), and other measurement is performed. The value is transmitted to the signal processing units 30 and 44, and proceeds to step S110. On the other hand, when it is determined that no error is included in the measurement values of each sensor, all the measurement values of each sensor are transmitted to the signal processing units 30 and 44, and the process proceeds to step S110.
  • an error a value that does not fall between the upper limit value and the lower limit value of each sensor
  • step S110 the noise of the measurement value of each sensor is removed by the signal processing units 30 and 44.
  • step S112 the measured values of the sensors from which noise has been removed are transmitted from the edge nodes 18 and 20 to the gateway 16, and the control flow ends.
  • step S200 an instruction signal for instructing the edge nodes 18 and 20 to perform measurement is output from the gateway 16.
  • step S202 it is determined whether or not there is an error in the measurement values of the sensors input from the edge nodes 18 and 20. If it is determined that there is an error in the measured values of the sensors, the process proceeds to step S204, where the identification signal of the sensor that has output 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, when it is determined that there is no error in the measurement values of the sensors input from the edge nodes 18 and 20, the process proceeds to step S206.
  • step S206 the control unit 50 of the gateway 16 analyzes the relative relationship between the measurement values of the sensors transmitted from the edge nodes 18 and 20.
  • step S208 a simple diagnosis of the tunnel 12 is performed based on the analysis result in step S206.
  • this simple diagnosis the tendency of the increase and decrease of the measurement value of the same sensor and the magnitude relation of the measurement values of the same type of sensor measured at the same timing are compared.
  • step S210 it is determined from the result of step S208 whether an abnormality has occurred in the tunnel 12. If it is determined that an abnormality has occurred in the tunnel 12, the process proceeds to step S212, where 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 unit 74 disposed near the point where the light emission is performed is turned on, and the process proceeds to step S214. On the other hand, if it is determined that no abnormality has occurred in the tunnel 12, the process proceeds to step S214.
  • step S214 the measurement value of each sensor is transmitted from the gateway 16 to the external server 60, and the control flow ends.
  • step S300 it is determined whether an alarm signal has been input from the gateway 16. 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, when it is determined that the alarm signal has not been input from the gateway 16, the process proceeds to step S304.
  • step S304 the measured values of each sensor transmitted from the gateway 16 are stored in the external server 60.
  • step S306 it is determined whether or not the measurement value of each sensor transmitted from the gateway 16 includes an error. If it is determined that an error is included in the measurement value of each sensor transmitted from the gateway 16, the process proceeds to step S ⁇ b> 308, and the monitor 68 displays the type and location of the sensor that has output the error. Then, the process proceeds to step S310. On the other hand, if it is determined that no error is included in the measurement values of each sensor transmitted from the gateway 16, the process proceeds to step S310.
  • step S310 the basic information of the tunnel 12 is called from the database.
  • step S312 a prediction model corresponding to the measurement value of each sensor is called from the database based on the basic information of the tunnel 12.
  • step S314 the measured value of each sensor is compared with the prediction model.
  • step S316 it is determined from the result of step S312 whether the tunnel 12 has an abnormality. If it is determined that there is an abnormality in the tunnel 12, the process proceeds to step S318, where the external server 60 outputs an abnormality signal 72 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, where no abnormality is displayed on the monitor 68, and the control flow ends.
  • the detection signal output from the sensor can be used on site.
  • the inspection system 10 can be arranged on the “bridge 80” as a structure.
  • the seat unit 14 is arranged along the longitudinal direction of the main girder 82 (the longitudinal direction of the bridge 80) for each of the plurality of main girders 82 of the bridge 80, and
  • One gateway 16 is arranged for each of the 82.
  • Each of the gateways 16 is provided with a light emitting unit 74.
  • the communication unit 52 is shared by the plurality of gateways 16 arranged in the short direction of the bridge 80 (the direction orthogonal to the long direction of the main girder 82), and the second signal 64 Input / output is performed between the gateways 16 via the two communication units 52.
  • the abnormality of the bridge 80 can be detected by the state estimation unit 70 as in the case of the tunnel 12.
  • the configuration is such that data from the edge nodes 18 and 20 is aggregated in the gateway 16, but this is not a limitation.
  • the detection signal of each sensor may be directly output to the gateway 16 according to the function of the CPU or the like of the control unit 50 of the gateway 16.
  • the gateways 16 are connected to each other by the cable 58.
  • the configuration is not limited to this, and the gateways 16 may perform wireless communication using the communication unit 52.
  • an antenna or the like may be provided in the edge nodes 18 and 20 to perform wireless communication between the edge nodes 18 and 20 and the gateway 16.
  • the strain sensor, the salt content sensor, the potential sensor, and the vibration sensor are provided, but a sensor other than these may be arranged on the structure. Further, the type of each sensor is not limited to those described above, and various types of sensors can be adopted.
  • the inspection system 10 detects the abnormality of the tunnel 12 and the bridge 80.
  • the inspection system 10 may use other structures. Can be detected.
  • the light emitting unit 74 is used as the notification unit, but an alarm or the like may be used as the notification unit.

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  • Physics & Mathematics (AREA)
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  • Computer Networks & Wireless Communication (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Medicinal Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Alarm Systems (AREA)
PCT/JP2019/009810 2018-08-27 2019-03-11 構造物の点検システム Ceased WO2020044627A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572080A (ja) * 1991-09-13 1993-03-23 Showa Electric Wire & Cable Co Ltd バスダクトの温度監視装置
JP2003315317A (ja) * 2002-04-18 2003-11-06 Taiheiyo Cement Corp コンクリート構造物の監視システム
JP2004502161A (ja) * 2000-06-29 2004-01-22 ユニヴァーシティ　カレッジ　ロンドン 構造疲労および使用を監視するための方法および装置
CN101408487A (zh) * 2008-10-28 2009-04-15 常州赛杰电子信息有限公司 基于无线传感器网络的桥梁结构安全状态应急监测及预警方法与系统
JP2010211440A (ja) * 2009-03-10 2010-09-24 Railway Technical Res Inst 異常予測装置、異常予測システム、異常予測方法、及びプログラム
JP2018022687A (ja) * 2016-07-25 2018-02-08 国立大学法人大阪大学 配線シート、シート状システム、及び構造物運用支援システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572080A (ja) * 1991-09-13 1993-03-23 Showa Electric Wire & Cable Co Ltd バスダクトの温度監視装置
JP2004502161A (ja) * 2000-06-29 2004-01-22 ユニヴァーシティ　カレッジ　ロンドン 構造疲労および使用を監視するための方法および装置
JP2003315317A (ja) * 2002-04-18 2003-11-06 Taiheiyo Cement Corp コンクリート構造物の監視システム
CN101408487A (zh) * 2008-10-28 2009-04-15 常州赛杰电子信息有限公司 基于无线传感器网络的桥梁结构安全状态应急监测及预警方法与系统
JP2010211440A (ja) * 2009-03-10 2010-09-24 Railway Technical Res Inst 異常予測装置、異常予測システム、異常予測方法、及びプログラム
JP2018022687A (ja) * 2016-07-25 2018-02-08 国立大学法人大阪大学 配線シート、シート状システム、及び構造物運用支援システム

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