KR20130124092A - System for managing underground facilities - Google Patents

Abstract

The present invention relates to a management system of underground facilities based on low power. The management system of the underground facilities based on the low power comprises a sensor node, a measurement unit, a relay unit, a power management unit; a control unit. The sensor node is individually installed in each underground facility and collects a set of measurement information. The measurement unit comprises a communication node which transmits the measurement information by using wired/wireless communication. The relay unit transmits and receives the measurement information to the communication node. The power management unit is connected to the sensor node and the communication node of the measurement unit, and supplies main power. When the main power is disconnected, the power management unit switches the main power to sub-power connected to a wired communication device and a wireless communication device. The control unit comprises a data receiving unit and an integrated control unit. The data receiving unit receives the measurement information collected from each sensor node of the measurement unit through the wired/wireless communication. The integrated control unit analyzes and provides processed information of the measurement information transmitted from the data receiving unit. [Reference numerals] (111a) Facility 1;(111n) Facility n;(112a) Sensing unit 1;(112n) Sensing unit n;(120) Integrated control unit;(121) Data collecting unit;(130) Relay unit;(140) Power managing unit;(AA) Ground;(BB) Underground;(CC) Sensing unit 2;(DD) Facility 2;(EE) Sensing unit 3;(FF) Facility 3

Description

Management system for low power basement facilities {SYSTEM FOR MANAGING UNDERGROUND FACILITIES}

The present invention relates to a management system of low-power basement facilities, and more particularly, to a management system of low-power basement facilities to allow continuous management of underground facilities using redundant power and communication networks.

Generally, underground facilities are various facilities buried underground for the purpose of improving living environment such as water supply, sewer, gas, communication, electricity, oil pipeline, and heating pipe.

Such underground facilities are likely to cause an accident when installing a buried object due to the fact that a plurality of facilities should be buried in a limited underground space. In addition, when a problem such as breakdown or disconnection occurs after burial, inconvenience to the living environment of a large number of people living on the ground Therefore, monitoring and inspection means for maintenance should be applied.

In addition, since underground facilities are not easily accessible for the occasional maintenance in the state of being buried underground, and equipment for monitoring the underground facilities is difficult because the maintenance for the maintenance of the status of the underground facilities is difficult to be done every time. Is installed on the ground and data is collected to detect the status of underground facilities through the data detected through it.

In order to achieve this, conventionally, in the case of a flow meter installed in a water supply and a sewer, an electronic ultrasonic flowmeter, an electronic flowmeter, and the like are installed, data of the flowmeter is received via a control device on the ground by connecting a communication line of a wired line to each flowmeter, This data is used to diagnose faults in each flowmeter and check whether water supply, sewerage, leakage, etc. are defective.

However, in case of disconnection or failure of wired communication line, it is still necessary to check for leaks and abnormalities caused by manpower, and in case of a communication failure in interpreting the data, a separate work for repairing this problem is required. there was.

In order to solve such a problem, a sensing technology in which USN (Ubiquitous Sensor Network) technology, that is, a wireless communication method, is mainly applied to underground facilities is being developed.

Since the underground facility detection system based on wireless communication is provided with an additional cost for connecting wired communication wiring and can provide an environment capable of measuring and checking underground facilities through a portable terminal using wireless communication, The position constraint problem of the apparatus can be solved.

However, in the underground facility detection system based on the wireless communication, there is a possibility that the radio signal may be interfered with due to the surrounding communication environment due to the characteristic of the wireless communication, so that there is a possibility that the reliability is lowered. In case of flooding of the flow meter or manhole, There is a disadvantage in that it is impossible to transmit data through the network.

That is, various types of underground facilities are urban infrastructures, but the reliability of collected data is very important, but it may be pointed out that data reliability of wireless communication means is difficult to guarantee perfect reliability due to communication interruption or external communication factors. .

Republic of Korea Patent Application Publication No. 2010-0116857

Therefore, the present invention was devised to solve the above-mentioned disadvantages and problems in the conventional underground facility management system, and uses a redundant communication network in which wireless communication is interlocked based on a wired communication line, and a main power supply and a battery power supply. The purpose of the present invention is to provide an integrated management system of low power based underground facilities for collecting and analyzing stable data of underground facilities through redundant power supply.

The object of the present invention, the sensor unit is installed in a plurality of underground facilities to collect the measurement information, and a measurement unit consisting of a communication node for transmitting the measurement information obtained from the sensor node through a wired or wireless communication; A relay unit that receives measurement information measured by the measurement unit through the communication node; A power management unit connected to the sensor nodes and the communication nodes of the measurement unit by wire to supply main power to the wired communication unit and the wireless communication unit when the main power is disconnected; And a control unit including a data receiving unit in which measurement information acquired at each sensor node of the measuring unit is received through wireless or wired communication, and an integrated control unit analyzing and providing the calculated and processed information of the measurement information transmitted from the data receiving unit. It is achieved by providing a low power infrastructure management system including.

The sensor node and the communication node of the metering unit are each connected to a secondary power source, and the secondary power source is composed of a battery driven by an interrupt-based SAC (Sleep and Awake Cycling) algorithm to enable low power communication and power connection .

Wherein the data receiving unit constituting the control unit comprises a wire communication unit connected to the communication node of the measurement unit through a wire communication wiring and a wireless communication unit connected by the relay unit and the wireless communication unit, And a database management unit for storing the acquired information of the measurement unit.

In addition, the control unit controls the wired communication unit connected to the communication node of the measurement unit via the wired communication line as a basic communication unit to receive the measurement information of the underground facility, and when the wired communication unit is faulty or the wired communication wiring is defective, The connection means may be switched so that the measurement information of each sensor node is continuously transmitted through the relay unit.

Here, the wired communication unit may include any one of a power line communication module and a serial communication module (RS-485 or RS-232) for simultaneously transmitting data communication and power supply to the redundant communication line. The wireless communication unit includes a Zigbee communication module, ISA 100 communication module or Wireless HART communication module.

In addition, the control unit, the wired and wireless communication unit has three states for the state management of the wired communication unit and the wireless communication unit, that is, the normal state for performing periodic wired communication, the wired failure state for performing periodic wireless communication, both wired and wireless Defining the state, if the wired disorder occurs in the normal state, the state is changed to the wired disorder state, if the wired disorder is recovered from the wired disorder state, the state is changed to the normal state, the wireless failure occurs in the wired disorder state In this case, the state is changed to the wired or wireless failure state, when the wireless failure is recovered from the wired or wireless failure state, the state is changed to the wired failure state, and when the wired failure is recovered from the wired or wireless failure state, the state is changed to the normal state. In this state, the recovery algorithm is given priority to the wired failures rather than the wireless failures. Thereby.

As described above, in the low-power-based underground facility management system according to the present invention, the power of the sensing means for acquiring the information of the underground facility is doubled as the main power source and the sub power source, so that even if the main power source is shut off, So that the reliability of the measurement information can be improved.

Further, the present invention can stably collect measurement information by providing redundancy of communication means such that the measurement information of the underground facilities measured by the sensing means can be continuously received through wireless communication in the case of failure of wire communication. It is possible to exhibit an operational effect that the reliability of the measurement information is improved.

In addition, the present invention can effectively apply a redundant power supply using a battery to an existing flow meter room facility, so that the present invention can be applied without additional facility construction.

In addition, the present invention can be connected to the low power-based communication and power, and can be expected to save energy when the secondary power is not in use can be expected.

1 is a schematic configuration diagram of a low-power basement facilities management system according to the present invention.
Figure 2 is a block diagram of a wired communication connection of the low-power basement facilities management system according to the present invention.
Figure 3 is a block diagram of a wired / wireless communication connection of a low power infrastructure management system based on the present invention.
Figure 4 is a block diagram of a low-power basement facilities management system according to the present invention.
5 is a diagram illustrating state management of a control unit according to the present invention.

The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, ""module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

First, Figure 1 is a schematic configuration diagram of a low power basement facilities management system according to the present invention.

As shown in the figure, the low-power-based underground facility management system 100 according to the present invention comprises a metering unit 110 buried in a basement and a control unit 120 installed on the ground, And a relay unit 130 for transmitting the measurement information of the measurement unit 110 to the control unit 120. [

The measurement unit 110 includes a plurality of underground facilities 111a to 111n such as a water supply pipe, a sewer pipe, a gas pipe, an oil pipe or a heating pipe, and a sensing unit 112a for measuring the amount of fluid flowing in the pipe of the underground facility. To 112n.

In this case, the sensing units 112a to 112n may be, for example, sensing means for measuring a flowmeter, and the flowmeter may include an electronic ultrasonic flowmeter, an electromagnetic flowmeter, a turbine flowmeter, a differential pressure flowmeter, and the like.

In the following description of the embodiment of the present invention, the sensing units 112a to 112n will be described assuming measurement information of a flow meter attached to the underground facilities 111a to 111n, but the present invention is not limited thereto. Various sensing means for measuring the state of the sensor can be applied.

The measurement unit 110 transmits measurement information to the control unit 120 through wire communication or wireless communication. The measurement unit 110 transmits measurement information of the flow meter to the control unit 120 through a wired communication wire, The measurement information of the flow meter can be transmitted to the control unit 120 through the wireless communication via the relay unit 130. [

At this time, the control unit 120 includes a data receiving unit 121 for receiving measurement information transmitted through a wire communication or a wireless communication in the measurement unit 110, and an integrated control unit 122 for providing calculated and processed information of the received information Lt; / RTI >

The underground facility management system 100 of the present embodiment may further include a power management unit 140 for supplying main power to the sensing units 112a to 112n constituting the measurement unit 110 in addition to the wired communication connection.

The power management unit 140 supplies main power by wire connection to the sensing units 112a to 112n of the measurement unit 110 and supplies power to the sensing units 112a to 112n when an abnormality occurs in the main power supply (Not shown) (described below) may be switched to the power supply means so that the power supply to the measuring unit 110 can be continuously performed.

The relay unit 130 periodically receives the measurement information received from each of the sensing units 112a to 112n of the measurement unit 110 and transmits the measurement information to the data reception unit 121 of the control unit 120 .

Similar to the sensing units 112a to 112n of the measuring unit 110, the relay unit 130 may have a separate power source and may have a redundant power connection structure. The relay unit 130 may be connected to the plurality of the control units 120, Information can be transmitted and received.

The outline configuration of the measurement information transmission / reception of the present embodiment configured as above will be briefly described with reference to FIGS. 2 and 3 as follows.

2 is a block diagram of a wired communication connection of a low power infrastructure management system according to the present invention, Figure 3 is a block diagram of a wired / wireless communication connection of a low power infrastructure management system according to the present invention.

2, when the control unit 120 and the measurement unit 110 are connected without any abnormality by the wired communication / power connection unit, the wireless communication of the measurement unit 110, the relay unit 130 and the control unit 120, The measurement information of the measuring section 110 is transmitted to the data receiving section 121 of the control section 120 through a power line communication module (DC-PLC) or a serial communication module (RS-485) ).

At this time, the data receiving unit 121 periodically checks the wired connection status with each of the sensing units 112a to 112n of the measurement unit 110 by a polling method, and if a period of the wired communication connection time is exceeded, Upon receipt, it is determined that there is a fault in the wired connection state.

3, the wired communication connection of the sensing units 112a to 112n in which the failure has occurred is released, and the measurement of the sensing units 112a to 112n through the wireless communication connection Information is transmitted to the relay unit 130 and the relay unit 130 transmits the measurement information transmitted through the wireless communication connection to the data receiving unit 121 of the control unit 120. [

In this case, if the wireless communication connection message is not received while the period of the wired communication connection time is exceeded, it is determined that both the wired communication connection and the wireless connection communication are failed, Try to recover by running the algorithm.

FIG. 4 is a block diagram of a low-power-based underground facility management system according to the present invention. Referring to FIG. 4, a more specific system configuration and a redundant power source structure of the underground facility management system will be described.

4, the underground facility management system 100 according to the present embodiment includes a measurement unit 110 for measuring individual information of the underground facilities 111, a control unit 110 for receiving the measurement information, A relay unit 130 for receiving and transmitting the measurement information of the measurement unit 110 and a power management unit 140 for managing the redundant power of the measurement unit 110.

The measurement unit 110 may include an underground facility 111 and a sensing unit 112 for measuring necessary information from the sensing unit 112. The sensing unit 112 may have an individual identification number and may include a sensor node 113 and a communication node 114, so that the sensor node 113 can acquire information such as an instantaneous flow velocity, an accumulated flow rate, and a pressure of an underground facility 111, such as a phase, a sewage pipe, and the like.

The communication node 114 transmits the information acquired from the sensor node 113 to the control unit 120. [ At this time, the measurement information transmitted through the communication node 114 can be transmitted to the control unit 120 through wired or wireless communication.

In addition, the sensor node 113 and the communication node 114 may be provided with auxiliary power sources such as sub powers 113a and 114a, that is, a rechargeable battery. The sub powers 113a and 114a may be used when the main power source connected to the measuring unit 110 is disconnected or disconnected.

The control unit 120 includes a data receiving unit 121 receiving the information obtained from the measuring unit 110 by wire or wireless communication, an integrated controller 122 for calculating and processing the received information and providing analyzed measurement information ).

The data receiving unit 121 includes a wired communication unit 121a for receiving measurement information of the measurement unit 110 by wired communication and a wireless communication unit 121b and a wired / wireless communication unit 121a And a DB management unit 121c for storing and managing information received via the network.

In addition, the integrated control unit 122 provides real-time calculation of the measurement information of the underground facility transmitted from the data receiving unit 121 and provides the information. If the flow meter is a flow meter, the flow rate information, speed, And density, facility information such as temperature, humidity, and failure status of underground facilities, surrounding information and weather information of underground facilities, and the like can be comprehensively calculated and provided.

The control unit 120 stores various programs and data for the operation of the integrated control unit 122, and controls the overall operation of the respective units for operation thereof.

The integrated control unit 122 may be configured as, for example, a micro controller unit (MCU), and when receiving measurement information using the wired communication unit 121a set as a basic communication means, an error of communication accumulates more than a predetermined reference number of times. Alternatively, if communication is not continued, the wireless communication unit 121b may switch to a wireless communication network.

Also, the log information according to the occurrence of the communication error is coded and recorded, and the error occurrence history is recorded and referred to for maintenance.

The wired communication unit 121a directly acquires the measurement information collected by the measurement unit 110 via the wired communication line through the wired communication and directly through the power line communication module (DC-PLC) or the serial communication module (RS-485) Can be connected. The wired communication unit 121a can supply power together with wired data communication, and the power line communication module is efficient because it can simultaneously connect the communication and the power source. The serial communication module separately configures and connects the power line and the communication line It is possible.

The wireless communication unit 121b can receive the measurement information collected by the measurement unit 110 through the relay unit 130 through the wireless communication. The wireless communication unit 121b operates when the measurement information reception failure of the measurement unit 110 occurs through the wired communication unit 121a and each measurement information of the measurement unit 110 can be received through the relay unit 130 through the wireless communication. That is, if a cable of the power line communication for the wired communication connection between the wired communication unit 121a and the measurement unit 110 described above is damaged or a wire communication failure occurs for another reason, a message of wireless communication is generated, The measurement information of the measuring unit 110 can be transmitted to the data receiving unit 121 of the control unit 120 by wireless communication through the relay unit 130. [

In this case, the relay unit 130 may be provided with a separate sub power source 131 like the sensor node 113 and the communication node 114 of the measurement unit 110. When the main power source is interrupted A redundant power supply structure in which power is supplied through a secondary power source may be employed.

Also, the relay unit 130 includes at least one of a Zigbee communication module, an ISA 100 communication module, and a Wireless HART communication module as a common communication network interface that enables interoperability between different wireless field communication networks.

The Zigbee communication module is a wireless communication module capable of low-power wireless networking that supports short-range communication. The ISA 100 communication module is a wireless connection standard protocol for industrial monitoring, logging, and alarms. It is a low-complexity, low- Communication module, and the Wireless HART communication module is an open interoperability wireless communication standard and is a wireless communication module compatible with the existing HART protocol and supporting a control and automation system. The Zigbee communication module, the ISA 100 communication module, and the Wireless HART communication module have a common point of being low cost, low power and interworking with the existing network, and are a base technology for collecting and managing environment information through the sensor in the USN based environment .

The power management unit 140 supplies the wired power supplied together with the wired communication through the power line communication module of the wired communication unit 121a to the main power source and supplies the sub power sources 113a and 114a when the main power source is cut off due to the occurrence of abnormality of the power line, Power can be supplied to the sensor node 113 and the communication node 114 of the measurement unit 110 as an emergency power source. In addition, the power management unit 140 may charge the sub powers 113a and 114a when the wired power is supplied as the main power.

The sub powers 113a and 114a are composed of a battery driven by an interrupt-based SAC (Sleep and Awake Cycling) algorithm, and can be operated only when a state occurs. Therefore, power consumption can be minimized, Connection is possible.

5 is a diagram illustrating state management of a control unit according to the present invention.

The control unit includes three states for managing the state of the wired communication unit and the wireless communication unit, that is, a normal state (200) for performing periodic wired communication, a wired fault state (300) for performing periodic wireless communication, The wired and wireless connection state is changed to the wired failure state 300 when the wired failure occurs in the steady state 200 and the wired failure is recovered in the wired failure state 300, When the wireless terminal is changed to the normal state 200 and the wireless failure occurs in the wired failure state 300, the state changes to the wired and wireless failure state 400 and the wireless failure is recovered in the wired and wireless failure state 400, The state is changed to the fault state 300. When the wired fault is recovered in the wired and wireless fault state 400, the state changes to the normal state 200. In the wired and wireless fault state 400, complex Two priorities asserts motion recovery algorithm.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110. Measurement Section 111. Underground Facilities
112. Sensing section 113. Sensor node
114. Communication node 113a, 114a, 131. Sub-
120. Control section 121. Data receiving section
122. Integrated Control Department 121a. Wired communication section
121b. Wireless communication unit 121c. DB manager
130. Relay unit 140. Power management unit
200. Steady state 300. Wired fault status
400. Wired and wireless failure status

Claims (6)

A measurement unit configured to individually mount a plurality of underground facilities to collect measurement information, and a communication node to transmit measurement information acquired from the sensor node through wired or wireless communication;
A relay unit which receives measurement information measured by the measurement unit through the communication node;
A power management unit connected to the sensor node and the communication node of the measurement unit by wire to supply main power, and switching to a sub power connected to the wired communicator and the wireless communication unit when the main power is disconnected; And
A control unit including a data receiving unit in which measurement information acquired at each sensor node of the measurement unit is received through wireless or wired communication, and an integrated control unit analyzing and providing the calculated and processed information of the measurement information transmitted from the data receiving unit;
Low power based underground facility management system comprising a.
The method of claim 1,
The sensor node and the communication node of the measurement unit are each connected to a sub-power, the sub-power is a low-power basement facility management system consisting of a battery driven by an interrupt-based Sleep and Awake Cycling (SAC) algorithm.
The method of claim 1,
The data receiving unit includes a wired communication unit connected to a communication node of the measurement unit via a wired communication line, and a wireless communication unit connected to the relay unit by a wireless communication unit, and received by the wired communication unit and the wireless communication unit. Low-power basement facility management system consisting of a DB management unit that stores acquisition information.
The method of claim 1,
The control unit receives the measurement information of the underground facility by using a wired communication unit connected to the communication node of the measurement unit through a wired communication line as a basic communication unit, and communication connection means to a wireless communication unit in the event of a failure of the wired communication unit or a bad wired communication line. Low power-based underground facility management system through which the measurement information of each sensor node is continuously transmitted through the relay unit.
The method of claim 3,
The wired communication unit may be configured of any one of a power line communication module and a serial communication module (RS-485 or RS-232) for simultaneously transferring data and power in a two-wire communication line, and the wireless communication unit may be a Zigbee communication module, ISA 100 Low power infrastructure management system consisting of either communication module or Wireless HART communication module.
5. The method of claim 4,
The control unit,
A wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless wired and wireless communication systems,
If a wire fault occurs in the steady state, the state changes to a wire fault state. If the wire fault is recovered in a wire fault state, the state changes to a steady state. If a wire fault occurs, The state is changed to the wired failure state when the wireless failure is restored in the wired / wireless failure state, the state is changed to the normal state when the wired failure is recovered in the wired / wireless failure state,
In the wired / wireless new state, a low power-based underground facility management system operating a recovery algorithm by giving a recovery priority to the wired faults rather than the wireless faults.

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