Underground abnormality monitoring device and underground abnormality monitoring system

Abstract

To provide an underground abnormality monitoring device capable of constantly monitoring the occurrence of underground abnormalities at low cost, and an underground abnormality monitoring system equipped with the underground abnormality monitoring device.SOLUTION: An underground abnormality monitoring device 1 includes: a body portion installed on a monitoring target area; a radar device 8 that is placed in the body portion and monitors an underground below the body portion; and a communication unit 14 placed in the body portion and having a function of a transmitting unit that transmits reception results of the radar device 8 to an external analysis device 40 that analyzes the presence or absence of an abnormality in the monitoring target underground based on difference in the reception results by the radar device 8 at the monitoring target area.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an underground abnormality monitoring device that monitors whether or not there is an abnormality in a monitored underground area, and an underground abnormality monitoring system that includes the same. [Background technology]

[0002] In recent years, deep underground development projects below 40 meters have been actively carried out, which has resulted in large-scale road collapse accidents.

[0003] The cause of the collapse is the formation of a cavity in the ground due to soil runoff caused by underground construction work. The cavity formed deep underground moves upward due to gravity, causing the collapse.

[0004] For example, in order to prevent sinkhole accidents caused by damage to buried pipes, etc., a method is known in which underground radar mounted on a vehicle or the like is used to detect cavities under the road surface over a wide area (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-207110 [Patent Document 2] Japanese Patent Publication No. 2021-165669 Summary of the Invention [Problem to be solved by the invention]

[0006] The above-mentioned survey method is carried out by workers operating and driving the machine. Furthermore, in the case of cave-in accidents caused by the breakage of buried pipes, etc., many of them are small, measuring approximately 1m x 1m in plan view, and since it is difficult to predict the location of the cavity, it is necessary to thoroughly survey the road. Therefore, in municipalities outside of large urban areas, it is difficult to conduct surveys frequently or on a regular basis, considering the cost-effectiveness. Furthermore, it is not realistic to constantly monitor the target area using such survey methods.

[0007] Furthermore, in residential or commercial areas, roads are narrow and have little traffic, making it difficult for exploration vehicles to travel, which is one of the reasons why subsurface cavity exploration is rarely carried out.

[0008] The present invention has been made in consideration of the above points, and aims to provide an underground abnormality monitoring device that can constantly monitor for underground abnormalities at low cost, and an underground abnormality monitoring system equipped with the same. [Means for solving the problem]

[0009] The underground abnormality monitoring device according to claim 1 comprises a main body installed in a monitoring target area, a radar device disposed in the main body and monitoring the area below the main body, a detection unit disposed on the main body unit and detecting movement information of the main body unit; The monitoring target area is disposed in the main body. In front The radar device The comparison of the reception result as the reference data obtained by the a transmitter that transmits the reception results of the radar device to an external analysis device that analyzes the presence or absence of abnormalities in the monitored underground based on the difference. When movement of the main body is detected based on the movement information detected by the detection unit, a reception result newly received by the radar device at the moved position is transmitted from the transmission unit to the analysis device as the reference data. It is something.

[0010] The underground abnormality monitoring device according to claim 2 is the underground abnormality monitoring device according to claim 1, wherein the main body is a traffic control device.

[0011] The underground abnormality monitoring device according to claim 3 is the underground abnormality monitoring device according to claim 1, wherein the main body is a speed regulating body.

[0012] The underground abnormality monitoring device described in claim 4 is an underground abnormality monitoring device described in any one of claims 1 to 3, which is provided with an acquisition unit that acquires location information, and a transmission unit that wirelessly transmits the location information acquired by the acquisition unit.

[0013] The underground abnormality monitoring system according to claim 5 includes at least one underground abnormality monitoring device according to any one of claims 1 to 4, a first communication unit capable of communicating with a transmission unit of the underground abnormality monitoring device, and a second communication unit capable of communicating with a network, and further includes a relay device that relays reception results transmitted from the transmission unit by the radar device of the underground abnormality monitoring device and uploads them onto the network, and a network communication unit that can communicate with the network, and acquires the reception results uploaded onto the network. The reception result serving as the reference data and the subsequent reception results and an analysis device that analyzes the presence or absence of abnormalities in the monitored underground area based on the difference between the two.

[0014] The underground abnormality monitoring system according to claim 6 is the underground abnormality monitoring system according to claim 5, wherein the second communication unit of the relay device uses wireless communication conforming to the fifth generation communication standard. [Effects of the Invention]

[0015] According to the present invention, it is possible to constantly monitor underground abnormalities at low cost. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an explanatory diagram showing an underground abnormality monitoring system including an underground abnormality monitoring device according to a first embodiment of the present invention; [Figure 2] FIG. 2 is an explanatory diagram showing a schematic internal structure of the underground abnormality monitoring device. [Figure 3](a) is an explanatory diagram showing a schematic diagram of the underground abnormality monitoring device, inspection waves, and differences when there are no abnormalities in the monitored underground, (b) is an explanatory diagram showing a schematic diagram of the underground abnormality monitoring device, inspection waves, and differences when loosening occurs in the monitored underground, and (c) is an explanatory diagram showing a schematic diagram of the underground abnormality monitoring device, inspection waves, and differences when a cavity occurs in the monitored underground. [Figure 4] 1 shows an underground abnormality monitoring device according to a second embodiment of the present invention, in which (a) is an explanatory diagram schematically showing the underground abnormality monitoring device, inspection waves, and differences when there are no abnormalities in the monitored underground, (b) is an explanatory diagram schematically showing the underground abnormality monitoring device, inspection waves, and differences when loosening occurs in the monitored underground, and (c) is an explanatory diagram schematically showing the underground abnormality monitoring device, inspection waves, and differences when a cavity occurs in the monitored underground. DETAILED DESCRIPTION OF THE INVENTION

[0017] A first embodiment of the present invention will be described below with reference to the drawings.

[0018] 1 and 2, reference numeral 1 denotes an underground abnormality monitoring device. The underground abnormality monitoring device 1 is a stationary type, and is capable of constantly monitoring abnormalities in the underground (underground) to be monitored, such as loosening of the ground or the occurrence of cavities.

[0019] The underground abnormality monitoring device 1 includes a main body 3 that is installed at the monitoring site. The main body 3 has a support surface 4 at its bottom, and can be stably installed by grounding the support surface 4 to the monitoring site. In this embodiment, the main body 3 is a traffic control device. In the illustrated example, the main body 3 is a triangular pyramidal safety sign known as a pylon or a color cone (registered trademark). That is, the main body 3 integrally includes a base 5 located at its lower end and constituting the support surface 4, and a conical cone 6 that extends upward from the top of the base 5 so that its diameter gradually decreases. A reflective member 7, such as a reflective sheet that reflects light, is disposed on the outer surface of the cone 6. The main body 3 is formed of a synthetic resin or the like and is hollow inside.

[0020] A radar device 8 is disposed in the main body 3. The radar device 8 monitors the area below the main body 3 using electromagnetic waves and their reflected waves. The radar device 8 has an antenna 10, and a transmitter 11 and a receiver 12 electrically connected to the antenna 10.

[0021] The antenna 10 has the function of transmitting and receiving electromagnetic waves. The antenna 10 is located at the bottom of the main body 3 and is arranged facing the support surface 4. In this embodiment, the antenna 10 is stored inside the base 5. The antenna 10 is capable of transmitting an inspection wave, which is an electromagnetic wave, below the main body 3 and receiving the reflected wave. Separate antennas 10 may be provided for transmission and reception, or a single antenna 10 may be used for both transmission and reception.

[0022] The transmitter 11 is a part that generates an inspection wave, which is an electromagnetic wave of a predetermined transmission frequency, for example, 1 GHz, to be transmitted from the antenna 10 .

[0023] The receiver 12 is a part that processes the reflected waves received by the antenna 10. Preferably, the receiver 12 samples the reflected waves received by the antenna 10 and makes them available for processing by electronic circuits.

[0024] For example, the transmitter 11 and the receiver 12 are arranged above the antenna 10 inside the main body 3. In the illustrated example, the transmitter 11 and the receiver 12 are arranged at the lower end inside the cone 6.

[0025] The receiver 12 can output the reception results of the radar device 8, i.e., data indicating the reflected waves received by the antenna 10, to the communication unit 14. The communication unit 14 has a function of communicating data with external devices. That is, the communication unit 14 has a function as a transmitter that transmits data and a receiver that receives data. The communication unit 14 transmits the reception results acquired by the radar device 8 to the outside of the underground abnormality monitoring device 1. In this embodiment, the communication unit (transmitter, receiver) 14 is capable of transmitting and receiving data via wire or wirelessly. In this embodiment, the communication unit 14 is, for example, a board computer. As an example, the communication unit 14 is, for example, a general-purpose computer such as Raspberry Pi (registered trademark).

[0026] The communication unit 14 is disposed inside the main body 3. In this embodiment, the communication unit 14 is disposed above the antenna 10 inside the main body 3. In the example shown in the figure, the communication unit 14 is disposed at the lower end inside the cone 6. For example, the communication unit 14 may be configured as a unit integral with at least one of the transmitter 11 and the receiver 12 and disposed in the main body 3.

[0027] Furthermore, power is supplied to the communication unit 14 from a power supply unit 16. Preferably, the power supply unit 16 is a battery. In this embodiment, the power supply unit 16 is built into the main body unit 3. However, the present invention is not limited to this, and the power supply unit 16 may be detachable from the main body unit 3. A power switch is connected to the power supply unit 16, and power is supplied from the power supply unit 16 to each unit such as the communication unit 14, the transmitter 11, and the receiver 12 in response to operation of the power switch.

[0028] Preferably, the communication unit 14 is electrically connected to the acquisition unit 18, and the position information of the underground abnormality monitoring device 1 (main body unit 3) acquired by the acquisition unit 18 is output. The acquisition unit 18 receives positioning information from positioning satellites such as GPS satellites, and outputs position information (latitude, longitude, altitude, etc.) of the underground abnormality monitoring device 1 (main body unit 3) calculated from the positioning information to the communication unit 14. For example, a GPS transmitter is used as the acquisition unit 18. The acquisition unit 18 is arranged in the main body unit 3. For example, the acquisition unit 18 is arranged above the antenna 10 inside the main body unit 3. In the example shown in the figure, the acquisition unit 18 is arranged at the lower end inside the cone unit 6. The acquisition unit 18 may be configured as a unit integrated with the communication unit 14.

[0029] Preferably, the communication unit 14 is electrically connected to the detection unit 20, and movement information of the underground abnormality monitoring device 1 detected by the detection unit 20 is output. The detection unit 20 is, for example, an acceleration sensor, and outputs movement information indicating the detected acceleration of the underground abnormality monitoring device 1 to the communication unit 14. The detection unit 20 is arranged in the main body unit 3. For example, the detection unit 20 is arranged above the antenna 10 inside the main body unit 3. In the example shown in the figure, the detection unit 20 is arranged at the lower end inside the cone unit 6. The detection unit 20 may be configured as a unit integrated with the communication unit 14.

[0030] Furthermore, preferably, a camera 22 is electrically connected to the communication unit 14, and image data captured by the camera 22 is output. The camera 22 is activated when an abnormality is detected underground based on the reception results of the radar device 8 of the underground abnormality monitoring device 1, and captures an image of the periphery of the underground abnormality monitoring device 1. The image captured by the camera 22 may be a still image or a video image. The camera 22 is disposed outside the main body unit 3. Preferably, the camera 22 is disposed on the upper part of the main body unit 3. In the illustrated example, the camera 22 is disposed at the upper end of the cone unit 6.

[0031] Preferably, an alarm unit 24 is electrically connected to the communication unit 14. The alarm unit 24 is activated when an abnormality is detected underground based on the reception results of the radar device 8 of the underground abnormality monitoring device 1, thereby notifying those around the underground abnormality monitoring device 1 of the abnormality and urging caution by light, sound, etc. An example of the alarm unit 24 is a warning light. The alarm unit 24 is arranged outside the main body 3. For example, the alarm unit 24 is arranged on the outer surface of the cone unit 6. Preferably, the alarm unit 24 is arranged below the camera 22 and near the upper end of the cone unit 6.

[0032] As shown in FIG. 1 , the communication unit 14 is capable of communicating with the relay device 30. The relay device 30 relays the reception results at the radar device 8 transmitted from the communication unit 14 and uploads them to a cloud server S on the network NT. The relay device 30 has a first communication unit 32 capable of communicating with the communication unit 14 of the underground abnormality monitoring device 1. The first communication unit 32 is configured to periodically transmit a transmission request signal to the communication unit 14 requesting data transmission, and the underground abnormality monitoring device 1, upon receiving the transmission request signal via the communication unit 14, transmits the reception results at the radar device 8 from the communication unit 14 to the first communication unit 32. For example, wireless communication is used for communication between the first communication unit 32 and the communication unit 14. Preferably, Wi-Fi (registered trademark) is used for communication between the first communication unit 32 and the communication unit 14.

[0033] The relay device 30 also has a second communication unit 33 capable of communicating with the network NT. The second communication unit 33 is configured to periodically retrieve data from a cloud server S on the network NT. For example, wireless communication (mobile network) is used for communication between the second communication unit 33 and the network NT. Preferably, the second communication unit 33 is capable of high-speed communication with the network NT using wireless communication compliant with the fifth-generation communication standard (5G). As the relay device 30, a general-purpose PC (e.g., a laptop PC) equipped with a wireless LAN card or the like is used. That is, although not shown, the relay device 30 has a display unit such as a monitor, an input unit such as a keyboard, control units for each unit, and the like.

[0034] The reception results uploaded to the cloud server S are analyzed using an analysis device 40. The analysis device 40 acquires (downloads) the multiple reception results uploaded to the cloud server S and analyzes the presence or absence of abnormalities in the monitored underground area based on the differences between these reception results. The analysis device 40 has a network communication unit 42 that can communicate with the network NT. Communication between the network communication unit 42 and the network NT may be wired or wireless. Preferably, an optical fiber line is used for communication between the network communication unit 42 and the network NT. Preferably, the analysis device 40 has an analysis unit 43. The analysis unit 43 compares multiple reception results output at different times for each underground abnormality monitoring device 1, detects changes in waveform data from the differences, and determines whether the changes are due to abnormalities such as loosening of the ground or cavities in the underground area monitored by the underground abnormality monitoring device 1. Preferably, the analysis unit 43 is equipped with artificial intelligence (AI).

[0035] Preferably, a control unit 44 is electrically connected to the analysis unit 43 and the network communication unit 42. The control unit 44 generates a control signal for controlling the operation of the camera 22 and / or the alarm unit 24 of the underground abnormality monitoring device 1 in response to the analysis unit 43 detecting an abnormality. The control signal generated by the control unit 44 is uploaded to a cloud server S on the network NT via the network communication unit 42. The uploaded control signal is transmitted to the communication unit 14 of the underground abnormality monitoring device 1 via the communication units 33, 32 of the relay device 30, and then transmitted from the communication unit 14 to the camera 22 and / or the alarm unit 24, thereby operating the camera 22 and / or the alarm unit 24.

[0036] Furthermore, preferably, an email creation unit 45 is electrically connected to the analysis unit 43 and the network communication unit 42. In response to the analysis unit 43 detecting an abnormality, the email creation unit 45 sends an email via the network NT via the network communication unit 42 to a predetermined email address, such as a pre-registered email address. Preferably, the email contains information indicating the location and time when the abnormality was detected.

[0037] A general-purpose PC or the like is used as the analysis device 40. Preferably, the analysis device 40 is equipped with an input unit such as a keyboard or a mouse, a memory for storing various information, a display for displaying information, etc. The analysis device 40 operates according to a predetermined program (software).

[0038] The analysis device 40, the relay device 30, and at least one underground abnormality monitoring device 1 constitute an underground abnormality monitoring system 50.

[0039] Next, the operation of the first embodiment will be described.

[0040] An underground abnormality monitoring device 1 is installed in the area to be monitored. Preferably, the underground abnormality monitoring devices 1 are installed in multiple locations in the area to be monitored so that the area can be monitored in a wide, planar manner. More preferably, multiple underground abnormality monitoring devices 1 are installed at equal or approximately equal intervals, for example, every 5 m. When multiple underground abnormality monitoring devices 1 are used, it is preferable to assign each underground abnormality monitoring device 1 a different IP address, so that the relay device 30 and the analysis device 40 can identify each underground abnormality monitoring device 1 based on the IP address.

[0041] The underground abnormality monitoring device 1 is operated by grounding the support surface 4 of the main body 3 to the area to be monitored and operating the power switch. The transmitter 11 and receiver 12, supplied with power from the power supply 16, operate, and transmit pulsed inspection waves W (FIGS. 3(a) to 3(c)) from the antenna 10 to the underground area to be monitored. The time change in the intensity of the electromagnetic waves (reflected waves) received by the antenna 10 is output from the receiver 12 to the communication unit 14 as data indicating the reception result. The relay device 30 periodically transmits a data transmission request signal to the underground abnormality monitoring device 1 via the first communication unit 32, and the underground abnormality monitoring device 1 receives the signal via the communication unit 14 and transmits the data from the communication unit 14. When multiple underground abnormality monitoring devices 1 are used, this operation is performed sequentially.

[0042] In addition, in the underground abnormality monitoring device 1, the radar device 8 may be activated when it receives a signal requesting data transmission from the relay device 30, and data indicating the reception results may be transmitted from the communication unit 14, or the radar device 8 may be activated separately from the signal requesting data transmission from the relay device 30, and data indicating the reception results may be stored in a storage means provided in the communication unit 14, etc., and the stored data may be transmitted when it receives a signal requesting data transmission from the relay device 30.

[0043] The data transmitted from the communication unit 14 is received by the first communication unit 32 of the relay device 30, and then uploaded from the second communication unit 33 to the cloud server S on the network NT. At that time, the underground abnormality monitoring device 1 adds the location information acquired by the acquisition unit 18 to the data, thereby notifying the analysis device 40 of the installation location (latitude, longitude, altitude, etc.) of the underground abnormality monitoring device 1, which indicates the location of the area to be monitored.

[0044] Analysis device 40 downloads the data uploaded to cloud server S via network communication unit 42. This download is preferably performed every time the data is uploaded to cloud server S, but multiple data may also be downloaded periodically in bulk.

[0045] The analysis device 40 analyzes the differences between the multiple data sets using the analysis unit 43. That is, the analysis device 40 uses data indicating the reception results at a predetermined timing by the radar device 8 of the underground abnormality monitoring device 1 as reference data, and compares data indicating subsequent reception results with the reference data. The reference data may be based, for example, on data indicating the first reception result after the radar device 8 is started, or on data indicating reception results at any timing thereafter. Furthermore, for an underground abnormality monitoring device 1 equipped with a detection unit 20, if the analysis device 40 (e.g., the control unit 44) determines that the underground abnormality monitoring device 1 has moved based on movement information detected by the detection unit 20, for example, if the acceleration detected by the detection unit 20 is equal to or greater than a predetermined threshold, it is preferable to acquire new reception results to serve as reference data at the location to which the underground abnormality monitoring device 1 has moved.

[0046] As a result, for example, as shown in FIG. 3(a), if there is no particular abnormality in the underground monitored by the underground abnormality monitoring device 1, there is no change between the reference data and the data indicating subsequent reception results, and therefore the difference D is 0. On the other hand, if loosening of the ground A occurs in the monitored underground as shown in FIG. 3(b), or if a cavity H occurs in the monitored underground as shown in FIG. 3(c), the data indicating subsequent reception results will differ from the reference data, and the difference D will appear as waveform data such as that shown in FIG. 3(b) or 3(c). Therefore, from these waveform data, it is possible to detect changes in the condition of the monitored underground where the underground abnormality monitoring device 1 is installed, i.e., the occurrence of an abnormality.

[0047] When an abnormality is detected by the analysis unit 43, the control unit 44 of the analysis device 40 generates a control signal for the camera 22 and / or the alarm unit 24 to be sent to the underground abnormality monitoring device 1 that detected the abnormality. When multiple underground abnormality monitoring devices 1 are used, the underground abnormality monitoring device 1 that detected the abnormality is identified based on its IP address, and a control signal is generated by specifying that IP address. The control signal generated by the control unit 44 is sent to the cloud server S via the network communication unit 42, downloaded from the cloud server S via the second communication unit 33 of the relay device 30 that periodically retrieves data from the cloud server S, and sent to the underground abnormality monitoring device 1 having the specified IP address via the first communication unit 32.

[0048] In the underground abnormality monitoring device 1, which receives the transmitted control signal via the communication unit 14, the camera 22 and / or the alarm unit 24 are operated in response to the control signal. The camera 22 captures an image of the area around the underground abnormality monitoring device 1 and transmits the captured image data to the relay device 30 via the communication unit 14. At this time, since the camera 22 is located at the top end of the main body unit 3, the area around the underground abnormality monitoring device 1 can be captured most efficiently.

[0049] The relay device 30 receives the image data via the first communication unit 32 and uploads the received image data to the cloud server S via the second communication unit 33. The analysis device 40 downloads the image data from the cloud server S via the network communication unit 42 and enables it to be displayed on a display or the like. The alarm unit 24 emits light to alert those in the vicinity, for example, as shown in Figures 3(b) and 3(c). Since the alarm unit 24 is located near the upper end of the main body 3, it is easy for people in the vicinity to see the alarm unit 24.

[0050] In addition, in the analysis device 40, the email creation unit 45 creates an email notifying the user of the abnormality and sends the email to a predetermined email address, such as a pre-registered email address, via the network NT via the network communication unit 42. At this time, an image downloaded from the cloud server S may be attached to the email.

[0051] The underground abnormality monitoring system 50 monitors the underground area to be monitored periodically, for example, at one-minute intervals, and monitors the underground area to be monitored for a long period of time, such as during underground construction work.

[0052] As described above, in the first embodiment, at least one underground abnormality monitoring device 1 is installed in a monitoring area, and includes a radar device 8 for monitoring downward and a communication unit 14 mounted on a main unit 3. The communication unit 14 transmits the reception results of the radar device 8. The relay device 30 then relays the reception results of the radar device 8 transmitted from the communication unit 14 of the underground abnormality monitoring device 1 and uploads them to the network NT. The analysis device 40 acquires the multiple reception results uploaded to the network NT and analyzes the presence or absence of abnormalities in the monitored underground area based on the differences between these reception results. This essentially enables continuous monitoring of underground abnormalities at low cost and without labor, simply by installing the underground abnormality monitoring device 1 in the monitoring area. Furthermore, even in residential or commercial areas where narrow roads with low traffic volume are the monitoring area, continuous monitoring of underground abnormalities is possible as long as the underground abnormality monitoring device 1 can be installed.

[0053] By using the main body 3 as a traffic control device, the installation of the underground abnormality monitoring device 1 can also serve as a traffic control device for the area to be monitored.

[0054] An acquisition unit 18 that acquires location information is placed in the underground abnormality monitoring device 1, and the location information acquired by the acquisition unit 18 is wirelessly transmitted via the communication unit 14, so that the location where the underground abnormality monitoring device 1 is installed can be accurately determined on the analysis device 40 side based on the location information.

[0055] By using wireless communication compliant with the fifth generation communication standard as the second communication unit 33 of the relay device 30, it becomes possible to quickly upload the reception results of the radar device 8 sent from the communication unit 14 of the underground abnormality monitoring device 1 onto the network NT. Therefore, even when the area to be monitored becomes wide due to large-scale underground development or the like and it becomes necessary to use a large number of underground abnormality monitoring devices 1, it becomes possible to upload a huge amount of data onto the network NT in a short time, making it possible to perform underground monitoring in real time.

[0056] In the first embodiment described above, the camera 22 and the alarm unit 24 are configured to transmit control signals from the analysis device 40, but this is not limited to this. A control signal may be generated in the underground abnormality monitoring device 1, such as the communication unit 14, in response to a signal output from the analysis device 40, and the operation of the camera 22 and the alarm unit 24 may be controlled by the control signal.

[0057] Next, a second embodiment will be described with reference to Fig. 4. Note that the same components and functions as those in the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

[0058] In the underground abnormality monitoring device 1 of this embodiment, the main body 3 is a speed regulator. In the illustrated example, the main body 3 is a long, raised body also called a hump (speed hump) or a bump (speed bump). The main body 3 has an upper portion formed with a convex shape upward. In this embodiment, the main body 3 is formed with an upper portion formed with an arc shape convex upward relative to the flat support surface 4. Therefore, the main body 3 has a cross section formed in a semi-cylindrical shape. The main body 3 is installed on the road with its longitudinal direction aligned with its width direction, thereby applying vertical vibrations to vehicles traveling above it and prompting the vehicle driver to slow down. For this reason, the main body 3 is formed to be strong enough to withstand the weight of the vehicle and protect the contents stored therein. Preferably, a visibility-enhancing portion 52, for example, with a longitudinal alternating color scheme of yellow and black, is formed on the upper portion of the main body 3 to improve visibility for the vehicle driver.

[0059] The radar device 8, communication unit 14, power supply unit 16, acquisition unit 18, etc. are arranged inside the main body unit 3. In the case of this embodiment, the main body unit 3 is fixed to the road and vehicles pass above it, so the detection unit 20, camera 22, and notification unit 24 do not need to be arranged in the main body unit 3.

[0060] As in the first embodiment, the underground abnormality monitoring system 50 is configured such that the support surface 4 of the main body 3 of the underground abnormality monitoring device 1 is grounded to the road that is the area to be monitored, and the power switch is operated to operate the transmitter 11 and receiver 12, which are powered by the power supply 16, and an inspection wave W (FIGS. 4(a) to 4(c)) is transmitted in pulses from the antenna 10 to the underground area to be monitored, and the time change in the intensity of the electromagnetic wave (reflected wave) received by the antenna 10 is output from the receiver 12 to the communication unit 14 as data indicating the reception result. Thereafter, the relay device 30 and the analysis device 40 also operate in the same manner as in the first embodiment, thereby monitoring abnormalities in the underground area to be monitored.

[0061] In this way, in the second embodiment, the same effects as in the first embodiment can be achieved, such as being able to constantly monitor underground abnormalities at low cost and without manpower, simply by installing the underground abnormality monitoring device 1 at the area to be monitored.

[0062] Furthermore, since the main body 3 is formed in an elongated shape, it is possible to monitor the underground area to be monitored over a wide belt-like range.

[0063] Furthermore, by using the main body 3 as a speed regulator, the installation of the underground abnormality monitoring device 1 can suppress the speed of vehicles traveling in the monitored area, while allowing vehicles to pass through the monitored area even while the monitored underground area is being monitored.

[0064] In the above embodiments, the analysis unit 43 of the analysis device 40 has been described as automatically analyzing data using artificial intelligence, but this is not limiting and the analysis may be performed by an engineer, or a combination of automatic analysis and analysis by an engineer may be used, for example, by performing a rough analysis automatically and then performing a detailed analysis by an engineer. When the data is analyzed by an engineer, it is preferable to visually display waveform data indicating the difference between data indicating multiple reception results by the radar device 8 on the display of the analysis device 40. [Explanation of symbols]

[0065] 1 Underground abnormality monitoring device 3 Main body 8. Radar equipment 14 Communication unit with transmitter function 18 Acquisition Department 30 Relay Device 32 First Communications Department 33 Second Communications Department 40 Analyzer 42 Network Communications Department 50 Underground abnormality monitoring system D difference NT Network

Claims

1. a main body unit installed at a location to be monitored; a radar device disposed on the main body and monitoring a portion below the main body; a detection unit disposed on the main body unit and detecting movement information of the main body unit; a transmitting unit disposed in the main body unit, which transmits the reception results of the radar device to an external analyzing device that analyzes the presence or absence of abnormalities in the underground area to be monitored based on the difference between the reception results serving as reference data acquired by the radar device at the monitored area and subsequent reception results; When movement of the main body is detected based on the movement information detected by the detection unit, a reception result newly received by the radar device at the moved position is transmitted from the transmission unit to the analysis device as the reference data. An underground abnormality monitoring device characterized by:

2. The main body is a traffic control device.

2. The underground abnormality monitoring device according to claim 1.

3. The main body is a speed limiter 2. The underground abnormality monitoring device according to claim 1.

4. an acquisition unit for acquiring location information; The transmitting unit wirelessly transmits the location information acquired by the acquiring unit.

4. The underground abnormality monitoring device according to claim 1.

5. At least one underground abnormality monitoring device according to any one of claims 1 to 4; a relay device having a first communication unit capable of communicating with the transmission unit of the underground abnormality monitoring device and a second communication unit capable of communicating with a network, which relays the reception results of the radar device of the underground abnormality monitoring device transmitted from the transmission unit and uploads them onto the network; an analysis device having a network communication unit capable of communicating with the network, acquiring the plurality of reception results uploaded onto the network, and analyzing the presence or absence of abnormalities in the monitored underground area based on the difference between the reception result serving as reference data and subsequent reception results; An underground abnormality monitoring system comprising:

6. The second communication unit of the relay device uses wireless communication compliant with the fifth generation communication standard.

6. The underground abnormality monitoring system according to claim 5.

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