KR20230088980A - Manhole management system and method - Google Patents

Abstract

A manhole management system according to an embodiment of the present invention includes a plurality of sensors installed inside a manhole or on a manhole cover, a power supply unit for supplying power to the plurality of sensors, and at least one manhole cover having a wireless communication unit; and a management server that wirelessly receives sensing information and a unique ID of the manhole cover from the plurality of sensors through the wireless communication unit, and monitors the state of the manhole where the manhole cover is located through the received sensing information.

Description

Manhole management system and method {Manhole management system and method}

The present invention relates to a manhole management system and method, and more particularly, to manhole management capable of receiving sensing information from a sensor installed in a manhole, receiving video from a surveillance camera, and providing a warning alarm to autonomous vehicles around the manhole. It relates to systems and methods.

A manhole is a large structure generally buried in a sewer or underground, and an entrance may be formed so that a worker can easily enter and exit the inside for cleaning or inspection.

In addition, the manhole can prevent people or objects from falling into the manhole by covering the open top of the manhole formed on the road or road surface with a manhole cover. At this time, if the manhole is formed in a location adjacent to the roadway, not a sidewalk, or formed within the roadway, the operation of the vehicle must be controlled while the work is being performed for the safety of workers.

However, in order to periodically check the manhole state, a sensor around the manhole must be installed, and the manhole state must be checked by receiving information from the sensor. However, conventional manhole management systems consume a lot of power to provide sensor information. It is inefficient, and there is a problem in that a systematic and up-to-date management system that can provide images to visually check the manhole status or provide information on the manhole status to self-driving vehicles being recently developed has not been established.

Republic of Korea Patent Publication No. 10-2007-0089467 (2007.08.31. Publication)

An object of the present invention is to receive sensing information wirelessly from a plurality of sensors at low power in order to solve the above problems, periodically monitor the state of the manhole in conjunction with a surveillance camera, and connect the manhole to an autonomous vehicle in conjunction with ITS. It is to provide a manhole management system and method capable of providing a warning alarm for the condition.

A manhole management system according to an embodiment of the present invention includes at least one manhole cover having a plurality of sensors installed inside a manhole or on a manhole cover, a power supply unit for supplying power to the plurality of sensors, and a wireless communication unit; and a management server that wirelessly receives sensing information and a unique ID of the manhole cover from the plurality of sensors through the wireless communication unit, and monitors the state of the manhole where the manhole cover is located through the received sensing information.

In the above, the power supply unit is characterized in that a solar panel or a rechargeable battery that converts solar energy into electricity and supplies power to the plurality of sensors with the converted electrical energy.

In the above, the plurality of sensors include an opening/closing sensor, a water level sensor, a temperature sensor, or a humidity sensor.

In the above, the manhole cover is the wireless communication unit for wirelessly transmitting the sensing information to the management server at low power by LoRa or NB-IoT communication; The sensing information is periodically provided from a plurality of sensors, and when a value of the received sensing information is out of a predetermined reference value, a control unit for controlling transmission of the sensing information to the management server is further included.

In the above, the power supply unit further includes an emergency power unit for wirelessly transmitting the sensing information to the management server using emergency power in case of power shortage or failure.

In the above, the management server is installed around the manhole and interworks with a remotely controllable surveillance camera to remotely control the pan, tilt, or zoom of the surveillance camera around the manhole according to the state of the manhole, It is characterized in that the video taken from the surveillance camera is wirelessly transmitted and the manhole cover is opened or closed or abnormal.

In the above, the management server is a V2X communication unit for V2X communication with an autonomous vehicle or ITS traveling around the manhole, and wirelessly transmitting a warning alarm indicating whether the manhole cover is open or abnormal when necessary; a wireless unit providing a communication protocol for receiving sensing information and a unique ID of the manhole cover through wireless communication with the wireless communication unit; A remote control unit that remotely controls the pan, tilt, or zoom of the surveillance camera around the manhole according to the manhole state according to the needs of the manager who has received the video taken from the surveillance camera; Sensing information DB for storing the sensing information wirelessly transmitted from the manhole; It includes an image DB that stores images transmitted from surveillance cameras.

In the above, the management server is characterized in that it wirelessly transmits a warning alarm informing whether the manhole cover is open or abnormal to the self-driving vehicle around the manhole according to the sensing information in conjunction with the ITS.

In the manhole management method using the manhole management system according to an embodiment of the present invention, the manhole cover wirelessly transmits sensing information collected from a plurality of sensors installed around the manhole to a management server to detect the manhole state; The management server wirelessly receiving the sensing information and the unique ID of the manhole cover; The management server monitoring the state of the manhole where the corresponding manhole cover is located through the received sensing information; Remotely controlling the management server to enable panning, tilting, or zooming of the monitoring camera around the manhole according to the state of the manhole by interworking with a remotely controllable monitoring camera installed around the manhole; And the management server receives the image taken from the monitoring camera wirelessly and monitors whether the manhole cover located in the manhole is opened or abnormal.

Controlling the manhole cover to periodically receive the sensing information from a plurality of sensors, and transmit the sensing information to the management server when the value of the sensing information provided through the control unit is out of a preset reference value; The management server performs V2X communication with an autonomous vehicle or ITS traveling around the manhole, and if necessary, wirelessly transmits a warning alarm indicating whether the manhole cover located in the manhole is open or abnormal; The management server further includes wirelessly transmitting a warning alarm informing whether the manhole cover located in the manhole is open or abnormal to the autonomous vehicle around the manhole according to the sensing information in conjunction with the ITS.

The manhole management method is performed in a computer program stored in a computer-readable storage medium.

The manhole management system and method of the present invention has the advantage of being able to monitor the manhole state by receiving low-power wireless transmission of sensing information from a plurality of sensors installed around the manhole.

In addition, it is possible to remotely control the pan, tilt, or zoom of the surveillance camera around the manhole according to the manhole state according to the needs of the manager who has received the video taken from the surveillance camera in conjunction with the surveillance camera, so that the manhole state can be monitored can be performed intuitively and spontaneously.

In addition, the management server can wirelessly transmit a warning alarm informing whether the manhole cover is open or abnormal to the autonomous vehicle around the manhole according to the sensing information in conjunction with the ITS, contributing to the safe operation of the autonomous vehicle.

1 is a block diagram showing the overall configuration of a manhole management system according to an embodiment of the present invention.
Figure 2 is a block diagram showing the detailed configuration of the manhole cover of Figure 1.
Figure 3 is a block diagram showing the detailed configuration of the management server of Figure 1.
4 is a flowchart showing the entire process of a manhole management method using a manhole management system according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention may add, change, delete, etc. other elements within the scope of the same spirit, through other degenerative inventions or the present invention. Other embodiments included within the scope of the inventive idea can be easily proposed, but it will also be said to be included within the scope of the inventive concept. In addition, components having the same function within the scope of the same idea appearing in the drawings of each embodiment are described using the same reference numerals.

1 is a block diagram showing the overall configuration of a manhole management system according to an embodiment of the present invention, FIG. 2 is a block diagram showing the detailed configuration of the manhole in FIG. 1, and FIG. 3 is a detailed configuration of the management server in FIG. It is a block diagram showing

1 to 3, the manhole management system of the present invention includes a manhole 100 and a management server 200.

As shown in FIG. 2, the manhole 100 includes a plurality of sensors installed inside the manhole or on the side of the manhole cover 100, a control unit 150 that receives sensing information from the sensors, and power supply to the plurality of sensors. A power supply unit 160 and a wireless communication unit 170 are provided.

The plurality of sensors include an opening/closing sensor 110 that detects whether the manhole is opened or closed, a water level sensor 120 that detects the water level to know whether or not there is submersion inside the manhole according to the water level state, and a temperature sensor 130 that detects the temperature around the manhole. ) or a humidity sensor 140 for detecting humidity, and in addition, a gas sensor, a fire detection sensor, etc. may be additionally installed as needed.

In addition, a plurality of sensors may be installed around the manhole, that is, inside the manhole or on the side of the manhole cover 100. For example, the water level sensor is installed inside the manhole where the manhole cover 100 is located and electrically connects to the control unit of the manhole cover. can be connected to

The power supply unit 160 may be a solar panel that converts solar energy into electricity and supplies power to the plurality of sensors with the converted electrical energy, or a battery such as a lithium-ion battery that can be charged wired or wirelessly.

In the case of using a solar panel as the power supply unit 160, the manhole cover 100 may be installed using reinforced plastic or tempered glass so that the solar panel is not damaged. For example, a space (groove) in which a transparent cover (not shown) is seated on the top of the manhole cover 100 may be formed, and a solar panel may be inserted into the cover.

Furthermore, it may be installed to receive power by being wired or wirelessly connected underground from a structure in which a solar panel is installed (for example, a street lamp or a sidewalk block in which the solar panel is installed).

Furthermore, the power supply unit 160 may further include an emergency power unit (not shown) that wirelessly transmits the sensing information to the management server 200 using emergency power in case of power shortage or failure. Here, the emergency power unit may be, for example, a super capacitor capable of fast charging and power supply.

The wireless communication unit 170 serves to wirelessly transmit sensing information to the management server 200 with low power by LoRa (Long Range) or NB-IoT (Narrowband IoT) communication. In addition, the wireless communication unit 170 may transmit the unique ID of the corresponding manhole cover 100 together with the sensing information.

Here, LoRa communication enables data transmission with low power, enables smooth transmission to the remote management server 200 located at a long distance, and has advantages of wide coverage and free frequency range even in a communication environment.

In addition, NB-IoT communication has the advantage of being able to wirelessly transmit sensing information efficiently with a small number of frequency resources.

The control unit 150 periodically receives sensing information from a plurality of sensors, and when the value of the received sensing information exceeds a predetermined reference value, the control unit 150 transmits the sensing information to the management server 200. That is, the control unit 150 controls to wirelessly transmit valid sensing information capable of determining whether the manhole is abnormal, thereby reducing unnecessary power consumption due to wireless transmission. Here, the control unit 150 is a programmable microcontrol unit (MCU) having a built-in memory and may be, for example, a Raspberry Pi or an Arduino, and may store the unique ID of the manhole cover 100 located in the manhole in the built-in memory. there is.

The management server 200 wirelessly receives sensing information and a unique ID of the manhole cover 100 from a plurality of sensors installed inside the manhole or on the manhole cover 100 through the wireless communication unit 170 of the manhole cover 100, and receives The state of the manhole can be monitored through one sensing information. Here, the sensing information may include a plurality of state values sensed for each type of sensor, and may be, for example, a sensed temperature value in the case of a temperature sensor.

In addition, the management server 200 interlocks with at least one surveillance camera 300 installed around the manhole and remotely controllable, and pans and tilts the surveillance camera 300 around the manhole according to the manhole state. Alternatively, it can be remotely controlled to enable zooming, receive wireless transmission of images taken from the monitoring camera 300, and monitor whether the manhole cover 100 located in the manhole is open or abnormal. Here, the surveillance camera 300 is a camera that can be connected to a wireless network, and may be, for example, a CCTV or a webcam.

Furthermore, the management server 200 may receive an image taken from the surveillance camera 300, recognize the vehicle using a deep learning-based object motion algorithm, and obtain an image of the vehicle or license plate. For example, a vehicle may be detected based on a Single-Shot Detector (SSD) model using a mobilenet in a Convolution Neural Network (CNN) technique. The image of the vehicle and license plate images recognized in this way can be used to monitor theft of the manhole cover 100 and traffic accidents caused by manhole opening.

In addition, the management server 200 interlocks with the ITS (Intelligent Transport System: Intelligent Transportation System, 400) to send a warning alarm to the self-driving vehicle around the manhole according to the sensing information to inform whether the manhole cover 100 is open or abnormal. can transmit wirelessly. At this time, the form of the warning alarm may be, for example, a guide message including contents about the manhole state (eg, opening of the manhole cover 100, rising water level, etc.), warning broadcasting, warning sound, vibration, and the like.

As shown in FIG. 3, the management server 200 includes a V2X communication unit 210, a wireless unit 220, a remote control unit 230, a sensing information DB 240, an image DB 250, and a location information DB 260. ) is further included.

The V2X communication unit 210 communicates V2X (Vehicle to everything) with an autonomous vehicle, ITS (400) or other objects (smartphone, tablet, etc.) traveling around the manhole, and if necessary, the manhole cover (100) located in the manhole ) can wirelessly transmit a warning alarm indicating whether or not it is open or abnormal.

Here, V2X communication is a general term for communication technologies such as vehicle-to-vehicle communication (V2V) as well as vehicle-to-object communication (V2N), a technology that allows information to be exchanged with other vehicles and objects with infrastructure such as roads. In addition, it enables autonomous vehicles to recognize the surroundings of the vehicle and drive safely through communication that exchanges numerous information on various situations such as traffic conditions.

When the management server 200 communicates with the ITS 400, it interworks with the ITS 400 to send a wireless warning alarm to the self-driving vehicle around the manhole to inform whether the manhole cover 100 located in the manhole is open or abnormal. can transmit Here, the self-driving vehicle around the manhole is a vehicle located within a radius of several tens of kilometers that is a standard under the judgment of the ITS 400, and may be a vehicle predicted to pass through the corresponding manhole.

The wireless unit 220 provides a communication protocol for receiving sensing information and a unique ID of the manhole cover 100 through wireless communication with the wireless communication unit 170 of the manhole cover 100, and the form of the wireless communication unit 170 According to this, LoRa or NB-IoT communication protocol can be embedded.

In addition, the wireless unit 220 may perform wireless communication with at least one monitoring camera 300 located around the manhole, and may receive an image captured by the monitoring camera 300 wirelessly.

The remote control unit 230 pans, tilts, or zooms the monitoring camera 300 around the manhole according to the manhole state according to the needs of the manager of the management server 200 that monitors the image taken from the monitoring camera 300. Perform remote control function.

The sensing information DB 240 stores the sensing information wirelessly transmitted from the manhole cover 100 for each unique ID of the corresponding manhole cover 100, and can provide the corresponding sensing information when requested by the manager, and the image DB 250 may store images transmitted from the surveillance camera 300, and may provide corresponding images upon request of a manager.

The location information DB 260 may store location information for identifying the location of the manhole where the corresponding manhole cover 100 is located in correspondence with the unique ID of the manhole cover 100.

4 is a flowchart showing the entire process of a manhole management method using a manhole management system according to an embodiment of the present invention.

The manhole cover 100 wirelessly transmits sensing information collected from a plurality of sensors installed around the manhole to the management server 200 to detect the manhole state (S100).

The manhole cover 100 periodically receives the sensing information from a plurality of sensors, and when the value of the sensing information provided through the control unit 150 exceeds a preset reference value, the corresponding sensing information is sent to the management server 200. can be controlled to transmit.

In addition, the management server 200 wirelessly receives the sensing information collected from the manhole cover 100 and the unique ID of the manhole cover, and monitors the state of the manhole where the corresponding manhole cover 100 is located through the received sensing information. Do (S102).

In addition, the management server 200 interlocks with a remotely controllable surveillance camera installed around the manhole, and remotely controls the pan, tilt, or zoom of the surveillance camera around the manhole according to the state of the manhole ( S104).

The management server 200 receives the video taken from the monitoring camera wirelessly and monitors whether the manhole cover 100 located in the manhole is opened or not abnormal (S106).

The management server 200 communicates V2X with an autonomous vehicle or ITS traveling around the manhole, and if necessary, wirelessly transmits a warning alarm indicating whether the manhole cover 100 located in the manhole is open or abnormal ( S108).

Finally, the management server can wirelessly transmit a warning alarm informing whether the manhole cover 100 located in the manhole is open or abnormal according to the sensing information in conjunction with the ITS to the self-driving vehicle around the manhole (S110) .

As described above, the manhole management method of the present invention may be performed by a manhole management system or a computer program stored in a computer-readable storage medium.

In addition, the storage medium may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer readable medium.

The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, SSD (Solid State Drive), and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

100: manhole cover 110: open/close sensor
120: water level sensor 130: temperature sensor
140: humidity sensor 150: control unit
160: power supply unit 170: wireless communication unit
200: management server 210: V2X communication unit
220: radio unit 230: remote control unit
240: sensing information DB 250: image DB
260: location information DB 300: surveillance camera
400: ITS

Claims (11)

At least one manhole cover having a plurality of sensors installed inside the manhole or on the manhole cover, a power supply unit for supplying power to the plurality of sensors, and a wireless communication unit;
A manhole management system comprising a management server that wirelessly receives sensing information and a unique ID of the corresponding manhole cover from the plurality of sensors through the wireless communication unit and monitors the state of the manhole where the corresponding manhole cover is located through the received sensing information. According to claim 1,
the power supply
A manhole management system, characterized in that it is a solar panel or a rechargeable battery that converts solar energy into electricity and supplies power to the plurality of sensors with the converted electrical energy. According to claim 1,
The plurality of sensors
A manhole management system that includes an open/close sensor, a water level sensor, a temperature sensor or a humidity sensor. According to claim 1,
The manhole cover is
The wireless communication unit for wirelessly transmitting the sensing information to the management server at low power by LoRa or NB-IoT communication;
A manhole management system further comprising a control unit that periodically receives the sensing information from a plurality of sensors and controls transmission of the sensing information to the management server when the value of the provided sensing information exceeds a preset reference value. According to claim 1,
the power supply
Manhole management system further comprising an emergency power unit for wirelessly transmitting the sensing information to the management server using emergency power in case of power shortage or failure. According to claim 1,
The management server
In conjunction with a remotely controllable surveillance camera installed around the manhole, remote control is performed to enable pan, tilt, or zoom of the surveillance camera around the manhole according to the state of the manhole, and the video taken from the surveillance camera is wirelessly A manhole management system characterized in that it receives the transmission and monitors whether the manhole cover located in the manhole is opened or abnormal. According to claim 1,
The management server
V2X communication unit for V2X communication with an autonomous vehicle or ITS traveling around the manhole, and wirelessly transmitting a warning alarm indicating whether the manhole cover located in the manhole is open or abnormal, if necessary;
a wireless unit providing a communication protocol for receiving sensing information and a unique ID of the manhole cover through wireless communication with the wireless communication unit;
A remote control unit that remotely controls the pan, tilt, or zoom of the surveillance camera around the manhole according to the manhole state according to the needs of the manager who has received the video taken from the surveillance camera;
A sensing information DB for storing sensing information wirelessly transmitted from the manhole cover;
A manhole management system including an image DB for storing images transmitted from the surveillance camera. According to claim 1,
The management server
Manhole management system, characterized in that in conjunction with the ITS, wirelessly transmits a warning alarm informing whether the manhole cover located in the manhole is open or abnormal to the autonomous vehicle around the manhole according to the sensing information. In the manhole management method using the manhole management system,
The manhole cover wirelessly transmits sensing information collected from a plurality of sensors installed around the manhole to the management server to detect the manhole state;
The management server wirelessly receiving the sensing information and the unique ID of the manhole cover;
The management server monitoring the state of the manhole where the corresponding manhole cover is located through the received sensing information;
Remotely controlling the management server to enable panning, tilting, or zooming of the monitoring camera around the manhole according to the state of the manhole by interworking with a remotely controllable monitoring camera installed around the manhole; and
The management server wirelessly transmits the image taken from the monitoring camera and monitors whether the manhole cover located in the manhole is open or abnormal. According to claim 9,
Controlling the manhole cover to periodically receive the sensing information from a plurality of sensors, and transmit the sensing information to the management server when the value of the sensing information provided through the control unit is out of a preset reference value;
The management server performs V2X communication with an autonomous vehicle or ITS traveling around the manhole, and if necessary, wirelessly transmits a warning alarm indicating whether the manhole cover located in the manhole is open or abnormal;
The management server interlocks with the ITS to wirelessly transmit a warning alarm informing whether the manhole cover located in the manhole is open or abnormal to the self-driving vehicle around the manhole according to the sensing information.
Manhole management method further comprising a. A computer program stored in a computer-readable storage medium that performs the manhole management method of claim 9 or 10.

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