KR102526029B1 - IoT-based gas shut-off, control device, and device-specific operation control method for advanced leak detection and the control method thereof - Google Patents

Abstract

The present invention relates to an IoT-based gas blocking, control device, and device for advanced leak detection and its operation control method, and more particularly, through data on gas leakage, temperature, pressure, valve opening and closing, remaining amount, liquid leakage, etc. It relates to a device for IoT-based gas blocking, control device, and leak detection advancement and Internet of Things (IoT) as well as an industrial Internet of Things (IIoT)-based gas blocking and control device and its operation control method. A leak detection advanced module (Strategic control module) that determines a control level suitable for a scenario set in a charging plant and a manufacturing facility, generates control signals for remote blocking devices and valves, and transmits the control signals through a wireless communication module; a sensor fusion module including a plurality of heterogeneous sensors installed in the individual, small business, gas filling and manufacturing facilities; a coupling module incorporating a protocol according to transmission/reception of sensor data of the sensor fusion module; The sensor fusion module is equipped with a communication function that can secure the security and reliability of sensor data, has a function to wirelessly transmit and receive signals from sensors and blocking devices in remote locations, and by applying LTE, BLE, NB-IoT, LoRa, etc. A communication board applying various communication methods according to communication distance and communication target; an actuator that is a driving device of a shut-off valve, a three-way valve, a pressure regulator, and a release valve used to block and control gas of the leak detection advanced module; and a power supply unit supplying power to the components.

Description

IoT-based gas shut-off, control device, and device-specific operation control method for advanced leak detection and the control method thereof}

The present invention relates to an IoT-based gas blocking, control device, and device for advanced leak detection and its operation control method, and more particularly, through data on gas leakage, temperature, pressure, valve opening and closing, remaining amount, liquid leakage, etc. It relates to an IoT-based gas blocking, control device, advanced leak detection, Internet of Things (IoT) as well as a device for industrial Internet of Things (IIoT)-based gas blocking and control devices, and an operation control method thereof.

In the case of city gas, petrochemical, and gas plants, which are generally managed by the 3 gas laws, there is an increasing demand for wireless communication technology for continuous monitoring and immediate response to high-risk facilities and equipment in a large area at an efficient cost.

The industrial IoT-based gas valve blocking/controlling device needs a product developed to block/control the valve by wireless communication by applying industrial wireless communication technology to the blocking/control part, which was only possible through wired communication according to the law, but currently Domestic gas valve shut-off and control devices exist only through wired communication, and therefore, products through wireless communication are needed.

The industrial IoT-based blocking/control device is a product based on industrial wireless communication technology with high reliability and security, and it is planned to be applied to large-scale facilities such as plants. It is expected that it will reduce construction and maintenance costs, prevent inoperability due to cable line blockage in case of disaster, and respond immediately.

In addition, there is a need for a wireless valve shutoff control device with explosion-proof performance that can be installed and operated in high-risk facilities such as plants.

Currently, the wireless cut-off device applicable to 15 types of valves capable of shutting off gas is a gas leak alarm shut-off device in KGS CODE AA632 KGS CODE AA632 gas leak alarm cut-off device manufacturing facility, technology, and inspection standard. It is a structure composed of parts, and it is possible to open and close remotely by interlocking with a wire, and it is a structure that detects leaked gas and automatically blocks the gas passage while sounding an alarm.” is stipulated.

Existing wired blocking devices installed due to the limitations of the above regulations have a problem that can lead to large-scale disasters due to being inoperable in the case of disconnection / blocking of wired lines that can occur in a disaster situation.

In addition, along with the detection technology for gas leakage, temperature, pressure, flow rate, remaining amount, etc. used in the existing detection unit, the corrosion and non-contact gas leakage detection technology of the pipe was developed, and the demonstration for advanced functional verification in connection with the wireless cut-off and control device this became absolutely necessary.

On the other hand, a wired and wireless integrated gas sensor system (Korean Patent No. 1754856) using IoT technology, which is a conventional invention, has a wireless communication module to receive gas detection information detected through a wireless detection unit or gas detection information detected through a wired detection unit. A communication unit for receiving and transmitting information necessary for a control procedure to a manager or user terminal through wired/wireless communication on the basis of the data stored in the management server to determine whether or not there is a gas leak; a receiving unit that receives gas detection information sensed through a wired detection unit, which is a communication module formed of a sensing sensor node by interlocking with the communication unit by wire, to display a corresponding location, or transmits the detected gas information to the communication unit; A wireless detection unit composed of a communication module of a detection sensor node to detect gas leakage or leakage and wirelessly transmit the detected information to the communication unit in the form of packets through a wireless network; a wired detection unit that is interlocked with the receiver by wire and configured as a communication module of a sensing sensor node to detect gas leakage and leakage and to transmit detected situation information in packets so that the detected information value is displayed; a manager terminal connected to the communication unit by wire to receive situational information according to gas detection and leakage, and to transmit remote control information for shutting off the gas valve as response information according to the state of the region according to gas detection and leakage; It is connected to the communication unit through a communication network, and reference values for smoke detection, carbon monoxide detection, and temperature detection by region and location are set and stored, and the stored values are transmitted to the communication unit through the communication network, or transmitted or requested by the detection unit through the communication unit. a database for transmitting gas detection signals for each region and location to a user terminal through a communication network; And receiving the detection value for each region and location set and stored in the database or wirelessly receiving the gas detection and leak status information of the detection unit transmitted to the communication unit to determine the gas detection and leakage according to the state of the corresponding region. It relates to a wired and wireless integrated gas sensor system using IoT technology, characterized in that it is configured to include; a user terminal that blocks a gas valve or responds to an emergency or disaster through object communication as response information.

However, in the case of individuals, small businesses, gas filling plants, and manufacturing facilities, it is not efficient to respond to simple emergency disasters with only gas shutoff, so it is not efficient to determine the control level suitable for the set scenario, generate control signals for remote shutoff devices and valves, and control the above. An advanced control method for transmitting a signal through a wireless communication module is required.

Korean Patent Publication No. 1999-0054984 Korea Patent No. 0530584 Korean Patent Publication No. 2020-0048101 Korean Patent Publication No. 1999-0058582

The present invention has been made to solve the above problems, to provide an IoT-based gas blocking, control device and a device for advanced leak detection that can be configured to perform a smart environment monitoring role by replacing the existing device. It has a purpose.

The present invention has been made to solve the above problems, and IoT-based gas blocking and control that can link gas leakage, temperature, pressure, safety valve opening and closing, residual amount, liquid leakage, etc. Its purpose is to provide a device for advanced device and leak detection.

In addition, the present invention provides an electromagnetic acoustic transducer (EMAT) sensor for advanced gas leakage detection technology and a gas blocking and control device based on the Internet of Things (IoT) as well as the Industrial Internet of Things (IIoT) to overcome the limitations of existing wired gas safety facilities. The purpose is to provide an IoT-based gas blocking, control device, and leak detection advanced device that can verify performance and safety by building a demonstration site with a quantum-based gas leak detection device.

In order to solve the above problems, the present invention determines a control level suitable for scenarios set in individuals, small businesses, gas filling plants and manufacturing facilities, generates control signals for remote blocking devices and valves, and transmits the control signals through a wireless communication module. A leak detection advanced module that transmits (Strategic control module); a sensor fusion module including a plurality of heterogeneous sensors installed in the individual, small business, gas filling and manufacturing facilities; a coupling module incorporating a protocol according to transmission/reception of sensor data of the sensor fusion module; The sensor fusion module is equipped with a communication function that can secure the security and reliability of sensor data, has a function to wirelessly transmit and receive signals from sensors and blocking devices in remote locations, and by applying LTE, BLE, NB-IoT, LoRa, etc. A communication board applying various communication methods according to communication distance and communication target; an actuator that is a driving device of a shut-off valve, a three-way valve, a pressure regulator, and a release valve used to block and control gas of the leak detection advanced module; and a power supply unit supplying power to the components.

The leak detection advanced module stores a program capable of selecting a control strategy for sending a signal to control remote devices through a simple warning alarm, indirect partial blocking, or total blocking for remote blocking devices and valves according to the level of response.

The sensor fusion module may include a gas detector sensor that can be installed in a gas-using facility; a temperature sensor for detecting temperature; a pressure sensor for detecting pressure; A liquid leak detection sensor for detecting liquid leakage; a safety valve opening/closing sensor that opens and closes a safety valve; It includes; a remaining amount detection sensor for detecting the remaining amount of gas.

The sensor fusion module further includes a pipe thickness sensing electro-acoustic transducer sensor.

The present invention is a multi-combustor installed in the restaurant; Fusecocks installed in homes; Charging, sales, and use facilities installed at gas business sites; A wireless detection/blocking device installed in a pipe connecting the restaurant, home, and gas business; and a control room wirelessly connected to the wireless detection/blocking device and the IoT gateway.

The present invention is a sensor fusion module including a plurality of heterogeneous sensors installed in individuals, small businesses, gas filling and manufacturing facilities; a coupling module incorporating a protocol according to transmission/reception of sensor data of the sensor fusion module; The sensor fusion module is equipped with a communication function that can secure the security and reliability of sensor data, has a function to wirelessly transmit and receive signals from sensors and blocking devices in remote locations, and by applying LTE, BLE, NB-IoT, LoRa, etc. A communication board (Communication Board; 42) applying various communication methods according to communication distance and communication target; an actuator that is a driving device of a shut-off valve, a three-way valve, a pressure regulator, and a release valve used to block and control gas of the leak detection advanced module; and a power supply unit supplying power to the components; A control strategy selection step of sending a signal to control remote devices through simple warning alarms, indirect partial blocking, or total blocking for remote blocking devices and valves according to the response level through the leak detection advanced module; Through the leak detection advanced module, a control level suitable for scenarios set in individuals, small businesses, gas filling plants and manufacturing facilities is determined, control signals are generated for remote blocking devices and valves, and the control signals are transmitted through a wireless communication module step; includes.

The present invention made as described above can overcome the reliability and security, which were the problems of the existing wireless communication, so when applying industrial two-way wireless communication and control technology, the above problems of wired communication are supplemented to quickly cope with large-scale disaster situations and prevent secondary damage. It has the effect of preventing the spread.

In addition, in the present invention, the development/application of an industrial two-way wireless communication-based blocking device for a large-scale facility such as a plant can be spread cheaper than the existing method as the installation/operating cost is reduced by more than 60% compared to the wired method, and thus gas safety in Korea can contribute to

In addition, the present invention predicts the lifespan (corrosion rate) due to corrosion of the pipe, predicts the replacement time of the pipe, prevents gas leakage in advance, and secures the safety of gas facilities by securing process conditions that can minimize corrosion. and can improve productivity.

In addition, the application field of the present invention can be applied to various environments such as home, small business, gas filling and manufacturing facilities, and petrochemical plants, and the market can be expanded and established through the demonstration of the above application field.

1 is a diagram showing a configuration according to the prior invention.
2 is a diagram schematically showing an IoT-based gas blocking, control device, and device for advanced leak detection according to an embodiment of the present invention.
3 is a diagram schematically showing a protocol according to steps of an IoT-based gas blocking and control device according to an embodiment of the present invention.
4 is a diagram schematically showing IoT-based gas blocking, control devices, and sensors for advanced leak detection according to another embodiment of the present invention.
5 is a diagram showing in detail an IoT-based gas blocking, control device, and device for advanced leak detection according to another embodiment of the present invention.
6 is a diagram showing in detail an apparatus for a home demonstration environment according to another embodiment of the present invention.
7 is a diagram showing in detail an apparatus for a demonstration environment for a small business according to another embodiment of the present invention.
8 is a view showing in detail a bird's eye view of a demonstration site according to another embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the examples described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art.

Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same members are sometimes indicated by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

As shown in FIG. 2, the entire blocking step of forcibly blocking the flow of gas through the pipe, the flow blocking of temporarily or continuously blocking the flow of gas flowing through the pipe, and the step-by-step blocking of blocking the gas in stages By comparing the waveform formed by plotting the change in pressure with the stationary waveform, the cut-off step can be increased or decreased.

As shown in FIG. 3, the standard of a wireless detection blocking solution through a smart device applied to one case by defining a protocol for communication control and various blocking methods for transmitting and receiving a plurality of sensor data and control signals for each smart device in a remote place. By presenting usage conditions, it is possible to grant flexible application functions in various environments.

At this time, a protocol according to steps such as step-by-step blocking, flow blocking, total blocking, etc. may be defined as various blocking methods, but is not limited thereto.

In addition, the present invention establishes a strategy for control operations through detailed function definitions and protocol definitions for functions of various stages and modules, and defines practical control operations, which is the core of smart gas detection and blocking control devices by intelligent situation awareness. The layer structure was defined as shown in FIG. 3 and implemented.

In addition, the present invention establishes control strategies such as installation, operation, control, and feedback in a demonstration environment to create and verify manuals for device and service operation to increase portability of the solution and secure marketability by reducing the user's training burden. and to establish a strategy to increase marketability.

In addition, the present invention provides a general-purpose optimal design method for a wireless detection and blocking device for field matching of the device, effectiveness of demonstration, stable implementation of functions, and minimization of restrictions (environmental requirements such as explosion-proof, dust-proof, and waterproof).

As shown in Figures 4 and 5, the present invention is a gas leak (gas detector) sensor 11 for detecting a gas leak in a large-scale facility such as a plant; a temperature sensor 12 for sensing temperature; a pressure sensor 13 for sensing pressure; a liquid leak detection sensor 21 for detecting liquid leakage; a safety valve opening/closing sensor 22 that opens and closes a safety valve; A residual amount detection sensor 23 for detecting the remaining amount of gas; includes.

In addition, the present invention may further include Quantum LiDAR 31 and EMAT 32 for light detection and distance measurement.

Quantum LiDAR 31 determines if the collected sensor data from the array of light detectors contains data associated with another light source different from the light source of the device based on the output from the offset light detector.

As an embodiment, EMAT (electromagnetic-acoustic transducer; 32) is a non-contact ultrasonic transducer, so it does not require a contact medium for transmission and reception of ultrasonic waves, so it is possible to detect defects while moving the transducer along the surface of the test object, and coil design and arrangement It is an ultrasonic transducer suitable for flaw detection of thin pipes because it can easily transmit and receive guided ultrasonic waves of the desired mode, such as surface waves and plate waves.

In other words, by constantly monitoring the thickness of large-scale piping with a wide temperature range and transmitting data to predict the lifespan (corrosion rate) due to corrosion of the piping, gas leaks are prevented in advance and corrosion is minimized by predicting the pipe replacement time. It is possible to secure the safety of gas facilities and improve productivity by securing the process conditions that can be achieved.

As an embodiment, in order to provide an EMAT-based thickness measurement system architecture, a transducer (sensor part) that emits electromagnetic sound and collects reflected waves, creates an instantaneous pulse voltage for emitting electromagnetic sounds, and collects and analyzes the collected reflected waves. Measurement/communication unit (Pulser/Receiver), signal analysis algorithm that analyzes thickness by analyzing collected data, and condition calculation solution that can minimize pipe corrosion through correlation analysis of temperature, pressure, and thickness history of pipe do.

Each of the above-described sensors, Quantum LiDAR (31), and EMAT (32) are networked to a Total Monitoring Solution (81) capable of overall monitoring and an IIoT Safety Device (82) to control remote devices.

As shown in FIG. 6, in the example of a home demonstration environment configuration, in the home demonstration environment configuration example,

In case of a pressure drop, sensor data is input to the fuzzy rule base, gas leakage, burner extinguishing, and temperature rise are selected, and the gas is blocked by sending a control signal of either a pressure drop measure due to a gas leak or a shut-off valve lock signal. situation can be resolved.

To this end, the leak detection advanced module ( Strategic control module;45); a sensor fusion module 44 including a plurality of heterogeneous sensors installed in the individual, small business, gas filling and manufacturing facilities; a coupling module 43 incorporating a protocol according to transmission/reception of sensor data of the sensor fusion module; and a power supply unit 41 supplying power to the components.

As shown in FIG. 7, in the case of building a demonstration environment for small businesses, in a situation where the CO sensor value is higher, sensor data is entered into the fuzzy rule base, and one of gas leak, burner digestion, oxygen concentration, and multi-sensor data monitoring is selected, After determining whether the CO concentration is increased due to non-combustion due to ventilation instability, a specific valve locking and ventilating signal is transmitted to take measures to lock the combustor shutoff valve and operate the ventilator.

Therefore, it is possible to solve the situation by controlling each actuator through an appropriate control signal to partially block gas and continue to supply gas to the safe area.

To this end, various sensors 61 and IoT devices 51 that connect them to the network; shut-off valve 63; shut-off valve 64; An IoT device 52 that connects the ventilation hole 65 to the network can be installed.

As shown in Figure 8, the present invention is a multi-combustor 110 installed in the restaurant; A fuse cock 120 installed in the home; Charging, sales, and use facilities (140) installed in the gas business; A wireless detection/blocking device 150 installed in a pipe connecting the restaurant, home, and gas business; A control room 130 wirelessly connected to the wireless detection/blocking device 150 and the IoT gateway; Systemic Control Strategy (160) including a Sequential Control module, a Feedback Control module, and a Recovery module; Advanced Detection Techniques (170) including Quantum LiDAR (31) and EMAT (32); A smart device 180 including IoT Safety Devices in which each sensor, Quantum LiDAR 31, EMAT 32, etc. are connected to the IoT device 51 through a network to enable Detection/Shut Off; Environments (190) including individuals, small businesses, gas filling plants and manufacturing facilities where the above-described various devices are installed; etc. may be included.

As shown in FIG. 8, the present invention cannot be applied to the ultrasonic thickness measurement of the conventional piezoelectric element method at a high temperature of about 60 to 70 ° C. or lower and at a temperature lower than 0 ° C. It is possible, by measuring the thickness (Thickness) of the pipe and pressure vessel to calculate the corrosion rate of the pipe and pressure vessel life can be predicted.

Meanwhile, the sensor fusion module 44 according to the present invention refers to a method of combining several sensors into one. This is divided into two methods: a physical combination of combining sensors and sensors into one, and a synthesis of data obtained from each sensor.

First, the situation classification algorithm by fuzzy logic is a qualitative evaluation method, which is a safety management and risk evaluation process based on expert knowledge, and is an algorithm that enhances portability and versatility by implementing it through fuzzy logic.

Second, context learning algorithm by neural network is an intelligent context learning algorithm by constructing sensor data convergence and learning process through neural network.

Firmware using fuzzy and neural network information is a firmware that has intelligent inference and learning functions embedded in smart devices, and it is possible to implement portability, integration, and standardized devices.

Intelligent wireless detection and blocking device through firmware installation supports artificial intelligence functions necessary for intelligent wireless detection and blocking device for performing various functions using intelligent firmware and implementing functions.

Short-distance and short-distance wireless communication modules capable of constructing multiple communication environments build a device communication environment for flexible response to the user's geographical conditions, smart device installation environment, and diversity of use environments.

That is, communication algorithms for receiving and sending data communication and feedback signals are designed to implement accurate functions and improve security performance.

The test logic through the test signal and evaluation signal for the verification test is the test logic that performs verification of functions required in the verification phase, establishment of a test environment, analysis of test results, transmission of signals for evaluation, and presentation of control methodology.

The verification test environment creation and test equipment installation plan can perform verification tests by installing and operating test equipment through the establishment of a verification test environment considering the characteristics of the actual use environment.

11: gas detector sensor
12: temperature sensor
13: pressure sensor
21: liquid leak detection sensor
22: safety valve open/close sensor
23: remaining amount detection sensor
31: Quantum LiDAR
32: EMAT
41: power supply unit
42: AI Firmware
43: coupling module
44: sensor fusion module
45: leak detection advanced module (Strategic control module)
46: communication board
61: various sensors
51: IoT device
63: shutoff valve
64: shutoff valve
65: ventilation hole
81 : Total Monitoring Solution
82: IIoT Safety Device
120: fuse cock
150: wireless detection / blocking device
130: control room
140: charging, sales, use facilities
160: Systemic Control Strategy
170: Advanced Detection Techniques
180: smart device
190: environment

Claims (6)

A leak detection advanced module (Strategic Control) that determines the control level suitable for scenarios set in individuals, small businesses, gas filling plants and manufacturing facilities, generates control signals for remote shut-off devices and valves, and transmits the control signals through a wireless communication module. module);
a sensor fusion module including a plurality of heterogeneous sensors installed in the individual, small business, gas filling and manufacturing facilities;
a coupling module incorporating a protocol according to transmission/reception of sensor data of the sensor fusion module;
The sensor fusion module is equipped with a communication function that can secure the security and reliability of sensor data, has a function to wirelessly transmit and receive signals from sensors and blocking devices in remote locations, and communicates by applying LTE, BLE, NB-IoT, and LoRa A communication board applying various communication methods according to distance and communication target;
an actuator that is a driving device of a shut-off valve, a three-way valve, a pressure regulator, and a release valve used to block and control gas of the leak detection advanced module; and
A power supply unit for supplying power; includes,
The sensor fusion module,
It further includes; an electromagnetic acoustic transducer sensor for detecting pipe thickness;
The electromagnetic acoustic transducer sensor includes a transducer that emits electromagnetic sound and collects reflected waves, a measurement/communication unit that creates an instantaneous pulse voltage for emitting electromagnetic sound, collects and analyzes the collected reflected waves, and analyzes the collected data to determine Thickness IoT-based gas blocking, control device and leak detection advanced device, characterized by calculating conditions that can minimize pipe corrosion through correlation analysis of signal analysis algorithm, temperature, pressure, and thickness history of the pipe that analyzes . The method of claim 1,
The leak detection advanced module stores a program capable of selecting a control strategy that transmits a signal to control remote devices through a simple warning alarm, indirect partial blocking, or total blocking for remote blocking devices and valves according to the level of response. IoT-based gas shutoff, control device, and device for advanced leak detection. The method of claim 1,
The sensor fusion module may include a gas detector sensor that can be installed in a gas-using facility; a temperature sensor for detecting temperature; a pressure sensor for detecting pressure; A liquid leak detection sensor for detecting liquid leakage; a safety valve opening/closing sensor that opens and closes a safety valve; An IoT-based gas blocking, control device and advanced leak detection device comprising a residual amount detection sensor for detecting the remaining amount of gas. delete The method of claim 1,
Multiple burners installed in the dining room;
Fusecocks installed in homes;
Charging, sales, and use facilities installed at gas business sites;
A wireless detection/blocking device installed in a pipe connecting the restaurant, home, and gas business; and
A control room wirelessly connected to the wireless detection/blocking device and the IoT gateway; IoT-based gas blocking, control device, and device for advanced leak detection further comprising.

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