KR20210026426A - Smart manhole for monitoring the status of underground facilities and smart manhole control system using the same - Google Patents

Abstract

Disclosed are a smart manhole for monitoring the status of underground facilities and a smart manhole control system using the same, which check the status in a manhole without requiring a user to visit the manhole. The smart manhole comprises: a manhole cover; an antenna arranged on the upper end of the manhole cover to transmit sensor data collected for an underground facility existing in the manhole and an internal environment of the manhole to a control server; a communication device arranged on the lower end of the manhole cover to collect the sensor data from a plurality of measurement sensors installed in the manhole to transmit the sensor data to the antenna; and a protective cover arranged on the lower end of the communication device to fix and protect the communication device. A Hall sensor installed in the communication device can determine whether the manhole cover is opened by using a change in the distance between the Hall sensor and a magnet arranged on one surface of the protective cover which is caused by a spring arranged on the lower end of the manhole cover.

Description

Smart manhole for monitoring the condition of underground facilities and a smart manhole control system using the same {SMART MANHOLE FOR MONITORING THE STATUS OF UNDERGROUND FACILITIES AND SMART MANHOLE CONTROL SYSTEM USING THE SAME}

The present invention relates to a smart manhole that collects sensor data on the state of an underground facility, and a smart manhole control system that provides a control solution for the underground facility using sensor data collected through the smart manhole.

The general manhole management method is that the operator periodically visits the manhole and directly inspects the interior, so maintenance costs are high, and there is a risk of an accident while working inside the manhole.

A method of checking the internal state of the manhole using a sensor is sometimes used, but the manhole cover blocks electricity and radio waves due to its material, so in order to collect the measurement results of the sensor installed inside the manhole, the operator opens the manhole cover and cancels the radio wave blocking. After that, you need to collect the sensor measurement results. In this case, the risk of personnel accidents can be reduced, but there is a problem that maintenance costs are still high.

In addition, the M2M/IoT-based sewage manhole monitoring system used in the conventional smart building can monitor the change in the amount of water flowing in the sewer pipe, but it is difficult to recover in the event of a failure in the installation and communication network because it uses a wired communication network. .

The present invention monitors the condition inside the manhole using a manhole cover including a sensor device, a communication device, and an antenna, and wirelessly transmits the monitoring result, thereby providing a system for checking the condition inside the manhole without a user's visit. have.

In addition, the present invention is a change in the distance between a hall sensor included in a communication device disposed at the bottom of the manhole cover and collecting sensor data for an underground facility existing inside the manhole and a magnet installed on one surface of the protective cover protecting the communication device. It is possible to provide a system for determining whether the manhole cover is opened or closed by using.

Smart manhole according to an embodiment of the present invention manhole cover; An antenna disposed on the upper end of the manhole cover to transmit sensor data collected about the environment inside the manhole and the underground facilities existing inside the manhole to the control server; A communication device disposed under the manhole cover to collect the sensor data from a plurality of measurement sensors installed in the manhole and transmit the data to the antenna; And a protective cover disposed at a lower end of the communication device to fix and protect the communication device, wherein the Hall sensor installed in the communication device includes the Hall sensor generated by a spring disposed at the lower end of the manhole cover. Whether the manhole cover is opened or closed may be determined using a change in distance between magnets disposed on one surface of the protective cover.

The antenna may include an antenna cover capable of withstanding an external impact, and may be fixed to the manhole cover by being connected to the protective cover through a fixing bolt passing through a hole formed in the antenna cover.

The Hall sensor in the operating state installed inside the communication device operates after transmitting a status message indicating the closure of the manhole cover to the antenna when the distance from the magnet disposed on one side of the protective cover is greater than a certain distance. Can be stopped.

The Hall sensor in an inactive state installed inside the communication device is changed to an operating state by the magnet when the distance to the magnet disposed on one surface of the protective cover is less than a certain interval, indicating the opening of the manhole cover. A message can be transmitted to the antenna.

The sensor data may include data on at least one of temperature, humidity, leakage current, fire, and flooding of a space in which the underground facility is located.

The smart manhole control system performed by the control server according to an embodiment of the present invention transmits sensor data on the environment inside the manhole and the underground facilities existing inside the manhole through an antenna disposed on the top of the manhole cover constituting the smart manhole. Receiving; Analyzing the received sensor data to monitor status information on the environment inside the manhole and underground facilities; And providing the monitored status information to the user, wherein the smart manhole is disposed at the bottom of the manhole cover to collect the sensor data from a plurality of measurement sensors installed inside the manhole and transmit it to the antenna. Communication device; And a protective cover disposed at a lower end of the communication device to fix and protect the communication device, wherein the Hall sensor installed in the communication device includes the Hall sensor generated by a spring disposed at the lower end of the manhole cover. Whether the manhole cover is opened or closed may be determined using a change in distance between magnets disposed on one surface of the protective cover.

The Hall sensor in the operating state installed inside the communication device operates after transmitting a status message indicating the closure of the manhole cover to the antenna when the distance from the magnet disposed on one side of the protective cover is greater than a certain distance. Can be stopped.

The Hall sensor in an inactive state installed inside the communication device is changed to an operating state by the magnet when the distance to the magnet disposed on one surface of the protective cover is less than a certain interval, indicating the opening of the manhole cover. A message can be transmitted to the antenna.

The sensor data may include data on at least one of temperature, humidity, leakage current, fire, and flooding of a space in which the underground facility is located.

The present invention monitors the internal state of the manhole using a manhole cover including a sensor device, a communication device, and an antenna, and wirelessly transmits the monitoring result, so that the internal state of the manhole can be checked without a user's visit.

In addition, the present invention can prevent safety accidents by providing the user with the status information inside the monitored manhole in real time.

In addition, the present invention is a change in the distance between a hall sensor included in a communication device disposed at the bottom of the manhole cover and collecting sensor data for an underground facility existing inside the manhole and a magnet installed on one surface of the protective cover protecting the communication device. It is possible to determine whether the manhole cover is opened or closed using.

1 is a diagram showing a smart manhole control system according to an embodiment of the present invention.
2 is a diagram showing the configuration of a smart manhole according to an embodiment of the present invention.
3 is a diagram showing the configuration of an antenna cover according to an embodiment of the present invention.
4 is a diagram showing a configuration diagram of a communication device according to an embodiment of the present invention.
5 and 6 are diagrams illustrating a method of determining whether to open or close a manhole cover according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It is to be understood that all changes, equivalents, or substitutes to the embodiments are included in the scope of the rights.

The terms used in the examples are used for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the embodiments, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the embodiments, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a smart manhole control system according to an embodiment of the present invention.

Referring to FIG. 1, a smart manhole control system 100 according to an embodiment of the present invention may include a smart manhole 110 and a control server 120. The smart manhole 110 may collect sensor data on the environment inside the manhole and underground facilities. At this time, the collected sensor data includes opening/closing information of the manhole cover, location and status information of the operator, temperature/humidity information inside the manhole, leakage current information, fire information, toxic gas information, slope information and flooding information of the manhole structure, etc. can do.

At this time, the smart manhole 110 may communicate with a plurality of measurement sensors installed inside the manhole through at least one wireless communication method of RF communication, Bluetooth Low Energy (BLE), or ZigBee. .

Thereafter, the smart manhole 110 may transmit sensor data on the collected manhole interior environment and underground facilities to the control server 120. In this case, the smart manhole 110 may transmit sensor data to the control server 120 through a low-power wide-area network (LPWAN).

The control server 120 analyzes sensor data received from the smart manhole 110 and monitors whether the manhole cover is opened or closed, and monitors status information about the environment inside the manhole and underground facilities, thereby providing it to the user periodically or aperiodically. More specifically, the control server 120 may determine status information on the environment inside the manhole and underground facilities by comparing the sensor data received from the smart manhole 110 with a preset threshold.

The management server 120 may prevent various safety accidents by using the determined status information on the environment inside the manhole and underground facilities. That is, the management server 120 can prevent safety accidents by notifying in real time the dangers inside the manhole to related organizations or users working around the smart manhole 110 through a separate control web or application. have.

For example, the management server 120 may analyze sensor data received from the smart manhole 110 and monitor the open/close state of the manhole cover to prevent a fall accident or detect theft or unauthorized work. Alternatively, the management server 120 may prevent various safety accidents by analyzing sensor data received from the smart manhole 110 and detecting toxic gas/oxygen concentration/fire in the manhole.

As another example, the management server 120 analyzes the sensor data received from the smart manhole 110 and monitors the water level of the water supply and sewage pipes to perform flood control or perform ground subsidence control using the inclination of the manhole cover. have.

In addition, the management server 120 may analyze the sensor data received from the smart manhole 110 and collect temperature information and water supply meter reading information, thereby preventing freezing accidents and solving problems with difficult readings.

2 is a diagram showing the configuration of a smart manhole according to an embodiment of the present invention.

Referring to FIG. 2, in the smart manhole 110, an antenna (not shown) for communication with the control server 120 may be disposed on the top of the manhole cover 111. The antenna can be fixed to the top of the manhole cover 111 using fixing bolts 112a, 112b and waterproof silicone, and since it is installed on the top of the manhole cover 111, there is no interference in the passage of pedestrians or vehicles. It can be designed to be low and sturdy to withstand pressure and shock. In this case, the antenna may be protected from external impact through the antenna cover 113.

In the smart manhole 110, a communication device 114 for collecting sensor data on the environment inside the manhole and underground facilities may be disposed at the bottom of the manhole cover 111. The communication device 114 may collect sensor data by interlocking with a plurality of measurement sensors installed inside the manhole through at least one wireless communication method of RF communication, Bluetooth Low Energy (BLE), or ZigBee. have. In this case, the communication device 114 may be supplied with power through a built-in battery, and may be designed in a dustproof waterproof structure in consideration of the environment inside the manhole.

In the smart manhole 110, a protective cover 115 for fixing and protecting the communication device 114 may be disposed under the communication device 114. At this time, the protective cover 115 may have a hole through which the fixing bolts 112a and 112b can pass, and the fixing bolts 112a and 112b passing through the hole formed in the antenna cover 112 By simultaneously passing through the holes formed in 115 and being connected with a fixing nut 116, it can be firmly fixed to the manhole cover 111.

Table 1 below shows the specifications and materials of each of the detailed parts constituting the smart manhole 110.

<Table 1>

Referring to Table 1, the antenna uses a LoRa (Long Range) antenna to transmit sensor data to a long distance with high stability and reliability, and an antenna cover made of plastomer material can be used to protect the antenna from external impact. have. For the fixing bolts, fixing nuts, and protective covers, stainless steel having low corrosion resistance and strong durability and heat resistance may be used. In addition, as the magnet, neodymium having excellent magnetic force compared to its size may be used.

Meanwhile, the communication device 114 of the smart manhole 110 may include a Hall sensor therein. At this time, the communication device 114 is determined based on the change in the distance between the Hall sensor generated by the spring 117 disposed at the bottom of the manhole cover 111 and the magnet 118 disposed on one side of the protective cover 115 It is possible to determine whether the manhole cover 111 is opened or closed by using the operation mode of the Hall sensor. A more detailed method of determining whether to open or close the manhole cover 111 will be described in detail with reference to FIGS. 5 and 6 below.

3 is a diagram showing the configuration of an antenna cover according to an embodiment of the present invention.

Referring to FIG. 3, since the antenna cover 113 is installed on the top of the manhole cover 111, it may be designed to be low and robust so as to withstand external pressure and shock without interference with the passage of pedestrians or vehicles. The antenna cover 113 may be designed to seal the inner space so that there is no damage or change in shape, and the inner space may be designed to cushion the inner space so that there is no impact of the antenna 310.

The antenna cover 113 may have two holes 320 to pass through the fixing bolts 112a and 112b, and one of the two holes 320 formed in the antenna cover 113 Through the connection of the cable 330 between the antenna 310 and the communication device 114, sensor data may be transmitted and received.

At this time, the antenna cover 113 and the fixing bolts 112a and 112b may be created in a mold form and may be designed as a single part.

4 is a diagram showing a configuration diagram of a communication device according to an embodiment of the present invention.

Referring to FIG. 4, the communication device 114 may be easily installed in an inner lid space within a manhole with a narrow spacing through a low-height structural design. In one area of the communication device 114, a built-in battery 410 may be disposed to supply power. For example, an AA size battery may be used. In addition, in the communication device 114, the area 420 to which the cable 330 is connected may be formed in a waterproof silicone compression type structure in order to waterproof the device itself.

A hole 430 through which any one of the fixing bolts 112a and 112b can pass may be formed in one area of the communication device 114, and a manhole cover ( 111) can be determined whether to open or close.

5 and 6 are diagrams illustrating a method of determining whether to open or close a manhole cover according to an embodiment of the present invention.

As mentioned above, the communication device 114 of the smart manhole 110 may include a Hall sensor therein. At this time, the communication device 114 is determined based on the change in the distance between the Hall sensor generated by the spring 117 disposed at the bottom of the manhole cover 111 and the magnet 118 disposed on one side of the protective cover 115 It is possible to determine whether the manhole cover 111 is opened or closed by using the operation mode of the Hall sensor.

Specifically, referring to FIG. 5, when the distance between the Hall sensor and the magnet 118 disposed on one surface of the protective cover 115 is greater than a predetermined distance, the Hall sensor is switched to the non-operation mode. , It is determined that the manhole cover 111 is closed, and a status message indicating that the manhole cover 111 is closed may be transmitted to the antenna.

On the contrary, referring to FIG. 6, when the distance between the Hall sensor and the magnet 118 disposed on one surface of the protective cover 115 is less than a predetermined distance, the Hall sensor is switched to the operation mode, It is determined that the manhole cover 111 is open, and a message indicating the opening of the manhole cover 111 may be transmitted to the antenna. In this case, the communication device 114 may periodically determine whether the manhole cover 111 is opened or closed, and transmit a status message indicating the determination result to the antenna.

Meanwhile, FIG. 6 may provide a method of determining whether the manhole cover 111 is opened or closed when the manhole cover 111 is moved to a normal state (ie, the antenna cover is located in the opposite direction of the ground). However, when the manhole cover 111 is moved in an inverted state (that is, the antenna cover is located in a contact with the ground), the smart manhole 110 opens and closes the manhole cover 111 using a separate 3-axis acceleration sensor. Whether it can be detected.

The method according to various embodiments is written as a program that can be executed on various computers and may be implemented in various recording media such as a magnetic storage medium, an optical reading medium, and a digital storage medium.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may include a data processing device, e.g., a programmable processor, a computer, or a computer program product, e.g., a machine-readable storage device (computer readable It can be implemented as a computer program tangibly embodied in a possible medium). Computer programs such as the above-described computer program(s) may be recorded in any type of programming language, including compiled or interpreted languages, and as a standalone program or in a module, component, subroutine, or computing environment. It can be deployed in any form, including as other units suitable for the use of. A computer program can be deployed to be processed on one computer or multiple computers at one site or to be distributed across multiple sites and interconnected by a communication network.

Processors suitable for processing a computer program include, by way of example, both general purpose and special purpose microprocessors, and any one or more processors of any kind of digital computer. In general, the processor will receive instructions and data from read-only memory or random access memory or both. Elements of the computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data. In general, a computer may include one or more mass storage devices that store data, such as magnetic, magnetic-optical disks, or optical disks, or receive data from or transmit data to them, or both. It may be combined so as to be. Information carriers suitable for embodying computer program instructions and data are, for example, semiconductor memory devices, for example magnetic media such as hard disks, floppy disks and magnetic tapes, Compact Disk Read Only Memory (CD-ROM). ), Optical Media such as DVD (Digital Video Disk), Magnetic-Optical Media such as Floptical Disk, ROM (Read Only Memory), RAM (RAM) , Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), and the like. The processor and memory may be supplemented by or included in a special purpose logic circuit structure.

Further, the computer-readable medium may be any available medium that can be accessed by a computer, and may include all computer storage media.

While this specification includes details of a number of specific implementations, these should not be construed as limiting to the scope of any invention or claimable, but rather as a description of features that may be peculiar to a particular embodiment of a particular invention. It must be understood. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination. Furthermore, although features operate in a particular combination and may be initially described as so claimed, one or more features from a claimed combination may in some cases be excluded from the combination, and the claimed combination may be a sub-combination. Or sub-combination variations.

Likewise, although operations are depicted in the drawings in a specific order, it should not be understood that such operations must be performed in that particular order or sequential order shown, or that all illustrated operations must be performed in order to obtain a desired result. In certain cases, multitasking and parallel processing can be advantageous. In addition, separation of the various device components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and the program components and devices described are generally integrated together into a single software product or packaged in multiple software products. It should be understood that you can.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is apparent to those of ordinary skill in the art that other modified examples based on the technical idea of the present invention may be implemented in addition to the embodiments disclosed herein.

100: smart manhole control system
110: smart manhole
111: manhole cover
112a, 112b: fixing bolt
113: antenna cover
114: communication device
115: protective cover
116: fixing nut
117: spring
118: magnet
120: control server

Claims (9)

Manhole cover;
An antenna disposed on an upper end of the manhole cover to transmit sensor data collected on an environment inside the manhole and an underground facility existing inside the manhole to a control server;
A communication device disposed under the manhole cover to collect the sensor data from a plurality of measurement sensors installed in the manhole and transmit the data to the antenna; And
A protective cover disposed at the bottom of the communication device to fix and protect the communication device
Including,
The communication device,
It is determined whether the manhole cover is opened or closed using an operation mode of the hall sensor determined based on a change in distance between a hall sensor generated by a spring disposed at the bottom of the manhole cover and a magnet disposed on one surface of the protective cover. Smart manhole. The method of claim 1,
The antenna,
Including an antenna cover that can withstand external shocks,
Smart manhole fixed to the manhole cover by being connected to the protective cover through a fixing bolt passing through the hole formed in the antenna cover. The method of claim 1,
The communication device,
When the Hall sensor is switched to the non-operation mode because the distance between the Hall sensor and the magnet disposed on one surface of the protective cover is more than a certain interval, it is determined that the manhole cover is closed, indicating that the manhole cover is closed. Smart manhole for transmitting a status message to the antenna. The method of claim 1,
The communication device,
When the Hall sensor is switched to the operation mode because the distance between the Hall sensor and the magnet disposed on one surface of the protective cover is less than a certain interval, it is determined that the manhole cover is open, and a message indicating the opening of the manhole cover Smart manhole for transmitting to the antenna. The method of claim 1,
The sensor data,
A smart manhole including data on at least one of temperature, humidity, leakage current, fire, and flooding of the space in which the underground facility is located. In the smart manhole control system performed by the control server,
Receiving sensor data for an environment inside the manhole and an underground facility existing inside the manhole through an antenna disposed on an upper end of a manhole cover constituting a smart manhole;
Analyzing the received sensor data to monitor status information on the environment inside the manhole and underground facilities; And
Providing the monitored status information to a user
Including,
The smart manhole,
A communication device disposed under the manhole cover to collect the sensor data from a plurality of measurement sensors installed in the manhole and transmit the data to the antenna; And a protective cover disposed below the communication device to fix and protect the communication device.
Including,
The communication device,
It is determined whether the manhole cover is opened or closed using an operation mode of the hall sensor determined based on a change in distance between a hall sensor generated by a spring disposed at the bottom of the manhole cover and a magnet disposed on one surface of the protective cover. Smart manhole control system. The method of claim 6,
The communication device,
When the Hall sensor is switched to the non-operation mode because the distance between the Hall sensor and the magnet disposed on one surface of the protective cover is more than a certain interval, it is determined that the manhole cover is closed, indicating that the manhole cover is closed. Smart manhole control system for transmitting a status message to the antenna. The method of claim 6,
The communication device,
When the Hall sensor is switched to the operation mode because the distance between the Hall sensor and the magnet disposed on one surface of the protective cover is less than a certain interval, it is determined that the manhole cover is open, and a message indicating the opening of the manhole cover Smart manhole control system for transmitting to the antenna. The method of claim 6,
The sensor data,
A smart manhole control system including data on at least one of temperature, humidity, leakage current, fire, and flooding of the space in which the underground facility is located.

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