KR101115522B1 - system for managing gas security using wireless communication in building - Google Patents

Abstract

The present invention relates to a gas safety management system using wireless communication in a building. Specifically, a wired / wireless sensor network is built in a building around a home network device to block gas when an abnormality such as a fire or gas leak occurs, or to automatically extinguish a fire extinguisher. The present invention relates to a gas safety management system capable of preventing a safety accident due to a gas leak or reducing an accident damage range.

Gas safety management system of the present invention comprises a wireless communication module, a fire detection sensor node for detecting carbon monoxide, smoke and smoke generation; A gas detection sensor node having a wireless communication module; A home that wirelessly receives a detection signal from the fire detection sensor node and the gas detection sensor node, and wirelessly transmits a command signal to the gas meter to shut off the gas when it is determined that an abnormality has occurred as a result of examining the detection signal received wirelessly. Network devices; And the gas meter which cuts off a gas according to a gas shutoff command signal wirelessly received from the home network device. Here, the sensor nodes are preferably installed in the building. In addition, a home network device is a so-called wall pad provided with a wireless communication module. In addition, it is preferable that a gas meter is a microcomputer meter provided with a wireless communication module.

 Gas, fire, safety, gas meter, fire extinguisher, wall pad, home, sensor, network

Description

System for managing gas security using wireless communication in building}

The present invention relates to a gas safety management system using wireless communication in a building, and more specifically, a wired / wireless sensor network in a building centering on a home network device aka, Wall-Pad, such as a fire or a gas leak, etc. The present invention relates to a gas safety management system that prevents safety accidents caused by a gas leak by shutting off the gas or operating an automatic fire extinguisher when the symptom appears.

In general, the microcomputer meter is a gas meter with a built-in microcomputer and a shutoff valve, and is a digital gas safety device that automatically detects a gas when a microcomputer detects a danger sign of a gas explosion. In addition to gas metering, key features include quick gas shut-off, remote meter reading, micro-leakage warning, low battery warning, shut-off warning, over-pressure warning, and forced locking through a telephone modem. There is an advantage.

However, these microcomputer meters can not recognize where the gas leaks in the building and various signs of abnormality caused by the gas leak. Therefore, in order to prevent gas accidents in buildings, it is necessary to provide additional safety devices in addition to the microcomputer meter.

The present invention has been made to solve the above-mentioned problems, by real-time monitoring whether abnormal signs such as gas leakage or fire occurs in the building and by blocking the gas or operating an automatic fire extinguisher when the abnormal signs occur, safety accidents due to gas leakage The aim is to provide a gas safety management system that can prevent accidents or minimize the extent of damage in the event of an accident.

In order to achieve the above object, the gas safety management system of the present invention comprises a wireless communication module, a fire detection sensor node for detecting carbon monoxide, smoke and smoke generation; A gas detection sensor node having a wireless communication module; A home that wirelessly receives a detection signal from the fire detection sensor node and the gas detection sensor node, and wirelessly transmits a command signal to the gas meter to shut off the gas when it is determined that an abnormality has occurred as a result of examining the detection signal received wirelessly. Network devices; And the gas meter which cuts off a gas according to a gas cut command signal wirelessly received from the home network device, wherein the gas meter checks a signal from a battery degradation detector in real time and displays a corresponding display letter on the LCD when the signal is input. It keeps warning until the battery low signal is removed. If gas flows in the valve shut-off state, it immediately restarts valve shut-off and displays a warning on the LCD. In further detail, the sensor nodes are preferably installed in a building. In addition, a home network device is a so-called wall pad provided with a wireless communication module. In addition, it is preferable that a gas meter is a microcomputer meter provided with a wireless communication module.

In addition, the home network device checks the detection signals transmitted by the sensor nodes, and when it is determined that the abnormality is generated, drives the ventilation fan, generates an alarm sound, and transmits the abnormality signal to a management server (eg, in a common house management room). Server). Then, the management server notifies the occurrence of the abnormality to the mobile communication terminal (e.g., the mobile phone of the corresponding tenant) through the wireless network.

In addition, the home network device transmits the meter reading data wirelessly received from the gas meter to the management server, so that the management server can calculate the gas usage fee and the like.

In addition, the gas meter is a wireless communication module for wireless communication with the home network device; A drive module for driving a gas valve; A measurement module for measuring the flow rate and the pressure of the gas; A seismic sensing module for detecting an earthquake; And when the wireless communication module receives a gas blocking command signal from the home network device, controls the driving module to block gas, and when an earthquake is detected by the sensing module, controls the driving module to block gas. As a result of checking the gas flow rate measured by the measuring module, if it is determined that an abnormality occurs, the driving module is controlled to shut off the gas, and as a result of checking the measured gas pressure, the driving module is determined to be abnormal. It may be made by including a control module to block the gas to control.

In addition, the control module of the gas meter controls the wireless communication module to transmit an earthquake detection signal and an anomaly signal to the home network device. Accordingly, the home network device generates an alarm sound and manages the earthquake detection and anomaly server. Notify Then, the management server notifies the mobile communication terminal of the corresponding contents (ie, earthquake detection or abnormality occurrence) through the wireless network.

In addition, the control module of the gas meter is determined to be a fine leakage when the gas usage amount of less than the predetermined value is continuously detected for more than a predetermined time.

In addition, the control module of the gas meter controls the driving module to shut off the gas when the gas is continuously used exceeding a preset usage time limit for each grade of gas usage.

Meanwhile, the gas safety management system of the present invention automatically locks a valve (for example, a gas range valve or an intermediate valve installed in a pipe connecting a gas meter to a gas range) when an abnormality such as a gas leak occurs, and automatically injects extinguishing fluid in the event of a fire. It can be made further comprising an automatic fire extinguishing device.

In particular, the automatic fire extinguishing device may include a wireless communication module wirelessly communicating with the home network device; A gas detection module detecting a gas; A temperature measuring module measuring a temperature; A drive module for driving a fire extinguisher and a gas valve; When the wireless communication module receives a gas block command signal from the home network device, the driving module controls the gas to block the gas, and when the gas leak is detected by the gas sensing module, the gas is controlled to block the gas. When the temperature measurement module checks the measured temperature, if it is determined that the abnormality occurs, the control module may control the driving module to block the gas or drive the fire extinguisher.

In addition, the control module of the automatic fire extinguishing device controls the wireless communication module to transmit a gas detection signal and an error signal to the home network device, whereby the home network device generates an alarm sound and manages the gas detection and error occurrence. Notify the server. Then, the management server notifies the mobile communication terminal of the corresponding contents (that is, gas detection or abnormality occurrence) through the wireless network.

According to the gas safety management system of the present invention, by building a wired / wireless sensor network in a building around a home network device, when an abnormality such as a fire or a gas leak occurs, the gas is shut off or an automatic fire extinguisher is operated. It can improve efficiency and prevent accidents such as fire caused by gas leakage.

In addition, the gas safety management system of the present invention can effectively perform home security and safety management in conjunction with the home network.

In addition, it can be connected to the social safety net, for example, in the event of a gas leak or fire can be notified directly to the fire department from the management server, it can be a great help in national disaster management.

Hereinafter, a gas safety management system according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a network diagram of a gas safety management system according to an embodiment of the present invention, FIG. 2 is an electrical block diagram of a gas meter according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. 4 is an electrical block diagram of an automatic fire extinguishing device according to an embodiment, and FIG. 4 is a flowchart illustrating a gas safety management method according to an embodiment of the present invention.

As shown in Figure 1, the gas safety management system according to an embodiment of the present invention home network device 100, gas meter 200, automatic fire extinguishing device 300, management server 400, carbon monoxide detection sensor The node 510 may include a flame detection sensor node 520, a smoke detection sensor node 530, a gas detection sensor node 600, a mobile communication terminal 700, and a ventilation fan 800.

In the above configuration, the carbon monoxide detection sensor node 510, the flame detection sensor node 520, and the smoke detection sensor node 530 are each a fire detection sensor node having a wireless communication module and installed in a building, for example, a household. do. Here, the wireless communication module operates in, for example, the worldwide unlicensed industrial, scientific and medical (ISM) frequency band, and uses the Zigbee method that supports the IEEE 802.15.4 PHY and MAC standards, which are international standards. Possible with 2.4GHz RF module.

The gas detection sensor node 600 also includes a ZigBee wireless communication module and is installed in a building for gas (LPG or LNG) leakage detection.

The home network device 100 is a so-called wall pad that can remotely control various electronic devices in the home as well as a video door phone function. Often, they are attached to the walls of the home kitchen or living room.

In addition, the home network device 100 includes, for example, a Zigbee-type wireless communication module, through which the gas meter 200, the automatic fire extinguishing device 300, the carbon monoxide detection sensor node 510, Wireless communication with the flame detection sensor node 520, the smoke detection sensor node 530 and the gas detection sensor node 600.

In addition, the home network device 100 detects from the carbon monoxide detection sensor node 510, the flame detection sensor node 520, the smoke detection sensor node 530, and the gas detection sensor node 600, as shown in FIG. 4. When the signal is received, the received detection signal is inspected to determine whether an abnormality occurs (for example, smoke, flame, carbon monoxide or gas leakage) (S11a and S11b). As a result of the determination, when it is determined that the abnormality occurs, the gas cutoff command signal is transmitted to the gas meter 200 through the wireless communication module to cut off the gas (S13a), drive the ventilation fan 800 (S13b), and generate an alarm sound. It generates and transmits the abnormal occurrence signal to the management server 400 (S15a).

In addition, the home network device 100 periodically transmits data to the management server 400 including whether an abnormality occurs and the gas valve state. In particular, the meter reading data received from the gas meter 200 is transmitted to the management server 400 (S11d), so that the management server 400 can calculate the gas usage fee and the like.

In addition, when the home network device 100 receives a signal indicating a gas leak or an earthquake detection from the gas meter 200 or a signal indicating a gas leak or a fire occurrence from the automatic fire extinguishing device 300, the home network device 100 manages such an abnormal occurrence. Notifies the server 400, drives the ventilation fan 800, and generates an alarm sound.

In addition, the home network device 100 displays various setting values set in the gas meter 200 so that the user can check them. The types of setting values that can be checked by the user are shown in Table 1 below.

In addition, the home network device 100 allows a user to directly check and set various setting values for driving the gas meter 200. Confirmation of setting values that can be set by the user is shown in Table 1, and the types of settings are shown in Table 2 below.

number Command One -Check the total usage (m3 / h) 2 -Check the total flow rate setting (m3 / h) 3 -Check the increase flow set value (m3 / h) 4 -Check the flow rate setting (m3 / h) 5 -Check the current pressure value (mm H20) 6 Pressure function check (mm H20) 7 -Check the upper pressure limit (mm H20) 8 -Check the pressure lower limit (mm H20) 9 Continuous operation time check (high flow rate, min) 10 -Continuous use time check (medium flow rate, min) 11 -Continuous use time check (low flow rate, min) 12 -Check valve condition 13 -Check the cause of blocking and warning 14 Company management confirmation 15 Personal check 16 Serial Number Verification 17 -Pilot check

number Command One Total usage setting (m3 / h) 2 -Total flow rate setting value (m3 / h) 3 -Increase flow rate setting value (m3 / h) 4 -Set the micro flow rate setting value (m3 / h) 5 Pressure function setting (mm H20) 6 Pressure function unused setting (mm H20) 7 Pressure upper limit setting (mm H20) 8 -Lower pressure limit setting (mm H20) 9 Continuous time setting and display (high flow rate, min) 10 Continuous time setting and display (medium flow rate, min) 11 Continuous time setting and display (low flow rate, min) 12 -Company management number setting 13 Personal number setting 14 Serial number setting 15 -Pilot registration 16 -Pilot off 17 -Pilot setting 18 Company management valve opening 19 Company-managed valve shutoff 20 Personal valve opening 21 Personal Care Valve Shutdown

In addition, the home network device 100 may include an ARS function for notifying the user of the gas valve state by voice and allowing the user to lock the gas valve when the user connects through a communication network using a telephone. Accordingly, the user can check the state of the gas valve and the like of his building anytime, anywhere, and lock the gas valve.

As shown in FIG. 2, the gas meter 200 includes a wireless communication module 220 for wireless communication with the home network device 100, a drive module 250 for driving the gas valve 260, and a flow rate of gas. And a measurement module 230 for measuring pressure, a sensing module 240 for detecting an earthquake, and a control module 210 for controlling the wireless communication module 220 and the driving module 250.

In the above-described configuration, as shown in FIG. 4, the control module 210 controls the driving module 250 when the wireless communication module 220 receives the gas blocking command signal from the home network device 100. Block (S13a). In addition, when an earthquake is detected by the sensing module 240, the driving module 250 is controlled to block the gas (S13a). In addition, when the gas flow rate measured by the measurement module 230 is determined as a result of abnormality (S11c), the driving module 250 is controlled to block the gas (S13a). In addition, when it is determined that the abnormality occurs as a result of the measurement of the gas pressure measured by the measurement module 230 (S11c), the driving module 250 is controlled to block the gas (S13a).

Specifically, the control module 210 has information such as gas flow rate / pressure and reduction or not, and performs 12 kinds of blocking functions as follows.

1. Total flow shutoff function

 It is judged whether or not it is a gas leak by comparing the total value of the flowed amount for a certain time (about tens of seconds) and the preset value.If the result is a leak, if it is confirmed that it is leaked through the same time, the gas valve shutoff-total flow rate Too many means that the gas valve or piping may be damaged.

2. Increased flow shutoff function

It is determined whether or not it is a gas leak by comparing the positive value that flowed up suddenly for a certain period of time (about tens of seconds) with a preset value.If the result is a leak, recheck the procedure for the same time and shut off the gas valve. A large increase in flow rate implies the possibility of damage to the gas valve or piping.

3. Initial leakage blocking function

This is a safety diagnosis function for the first use after installing the gas meter. It detects the flow of gas for about 2 minutes from the opening of the valve and immediately shuts off the gas valve when the flow is confirmed.

4. Low pressure shutoff function

If the gas pressure drops below the set value, repeat the procedure for a certain period of time, and if the pressure drop is confirmed, shut off the gas valve.-Low pressure gas means that the gas valve or pipe may be damaged.

5. High pressure shutoff function

When the pressure of the gas exceeds the set value, if the pressure is confirmed after repeated checking for a certain period of time, the gas valve is shut off.- The high pressure of the gas means an indication such as a fire.

6. Forced test cutoff function

Forced reset function, which resets the program by shutting off the gas valve when the reset switch signal is input.However, gas usage and setting data are maintained.

7. Tank exchange blocking function

Function to change the container when LPG is used.When the tank change switch signal is input, only the valve is shut off while keeping all the state data as it is.

8. Gas leak detector signal input blocking function

When the gas shutoff command signal is received from the home network device 100, the gas valve is shut off.

9.

Earthquake Detection Block

Immediately after receiving a signal from the self-contained sensing sensor, it monitors the signs of an earthquake for two minutes and automatically shuts off the valve when a gas flow is detected within two minutes.

10. Continuous use time cut off function

Gas is automatically generated when continuous gas flow is found for each of three levels of high flow rate, medium flow rate and low flow rate (for example, high flow rate 1 minute, medium flow rate 5 minutes, and low flow rate 10 minutes). Shut off valve

11. Remote communication center blocking function

It is a function to block through a communication port. It is a function to block by receiving a password. It is a function to block at a supplier or a management center that supplies gas. The valve can be opened only by a communication means with the same password. , Valve cannot be opened manually

12. Remote communication user blocking function

Similar to the remote communication center shutoff function, which allows the gas user to shut off the valve arbitrarily via a communication means (e.g. a wall pad)-in this case a manual valve opening is possible.

On the other hand, the gas meter 200 may be connected to the carbon monoxide detection sensor node 510 by wire, so that the control module 210 receives the detection signal when the detection signal is received from the carbon monoxide detection sensor node 510. Examine to determine whether an abnormality has occurred. As a result of the determination, when it is determined that the abnormality occurs, the driving module 250 is controlled to block the gas.

In addition, the control module 210 performs the following three warning functions.

1. Low battery warning

Check the signal from the battery low detector in real time, display the corresponding display letter on the LCD when the signal is input, and keep warning until the battery low signal is removed

2. Fine leakage warning function

The gas consumption should be accumulated in real time and the gas usage is judged every hour, and if a small amount of gas flow corresponding to the preset minute leakage continues for 30 days, a warning regarding the minute leakage is displayed on the LCD. Check at time intervals and clear the warning when there is more flow or no flow at all, and when the valve is shut off, the data related to the microleakage inspection are stored and countered again after opening the valve.

3. Blocking instability warning function

This function displays when gas flow is detected when the valve is shut off.Check the shut-off state of the valve.If gas flows in the shut-off state, the valve is shut off immediately and a warning is displayed on the LCD.

As shown in FIG. 3, the automatic fire extinguishing device 300 includes a wireless communication module 320 for wireless communication with the home network device 100, a gas detection module 330 for detecting gas, and a temperature for measuring temperature. A measurement module 340, a drive module 350 for driving the fire extinguisher 360 and a gas valve 370, and a control module 310 for controlling the wireless communication module 320 and the drive module 350. Can be done.

In the above-described configuration, as shown in FIG. 4, when the gas leak is detected by the gas detection module 330 (S11e), the control module 310 controls the driving module 350 to block the gas (S13c). . In addition, when the wireless communication module 320 receives the gas blocking command signal from the home network device 100, the wireless communication module 320 controls the driving module 350 to block the gas (S13c).

In addition, the control module 310 checks the temperature measured by the temperature measuring module 340, and when it is determined that the abnormality occurs, the control module 310 controls the driving module 350 to block the gas or drive the fire extinguisher. Specifically, when the measured temperature is 100 degrees or more (S11f), the gas valve 370 is driven to block the gas (S13c). If the measured temperature is 139 degrees or more (S11g), the extinguishing agent is injected by driving the extinguisher 370 (S13e).

As shown in FIG. 4, when the management server 400 is operated in a common house management room, when an abnormal occurrence signal (gas leak, earthquake or fire occurrence, etc.) is received from the home network device 100, the management server 400 generates an abnormal occurrence. The mobile tenant's mobile terminal is notified (for example, a text message) through a wireless network (for example, a CDMA network) (S15a). In addition, the occurrence of the abnormality is notified to, for example, the fire department through the social safety net (S17).

In addition, the management server 400 may include a function of notifying a gas valve state of the corresponding generation and the like so that the user may lock the gas valve when the user logs in through a communication network using a PC. Accordingly, the user can check the state of the gas valve and the like of his building anytime, anywhere, and lock the gas valve.

The gas safety management system of the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

1 is a network diagram of a gas safety management system according to an embodiment of the present invention.

2 is an electrical block diagram of a gas meter according to an embodiment of the present invention.

3 is an electrical block diagram of an automatic fire extinguishing device according to an embodiment of the present invention.

4 is a flowchart illustrating a gas safety management method according to an embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100: home network appliance 200: gas meter

300: automatic fire extinguishing device 400: management server

510: carbon monoxide (CO) detection sensor node 520: flame detection sensor node

530: smoke detection sensor node 600: gas (LNG / LPG) detection sensor node

700: mobile communication terminal 800: ventilation fan

Claims (12)

A fire detection sensor node having a wireless communication module; A gas detection sensor node having a wireless communication module; A home that wirelessly receives a detection signal from the fire detection sensor node and the gas detection sensor node, and wirelessly transmits a command signal to the gas meter to shut off the gas when it is determined that an abnormality has occurred as a result of examining the detection signal received wirelessly. Network devices; And And a gas meter to cut off a gas according to a gas cut command signal wirelessly received from the home network device. The gas meter checks the signal from the battery drop detector in real time, displays the corresponding display letter on the LCD when the signal is input, and keeps warning until the battery drop signal is removed. Gas safety management system characterized in that to re-execute and to display a warning on the LCD. Gas safety management system comprising a. The method of claim 1, The home network device, And if it is determined that the abnormality has occurred, transmitting the abnormality signal to the management server. The method of claim 2, And a management server that notifies the mobile communication terminal of the abnormality occurrence through the wireless network when the abnormality occurrence signal is received from the home network device. The gas meter according to any one of claims 1 to 3, wherein A wireless communication module in wireless communication with the home network device; A drive module for driving a gas valve; A measurement module for measuring the flow rate and the pressure of the gas; A seismic sensing module for detecting an earthquake; And When the wireless communication module receives a gas cutoff command signal from the home network device, the gas is controlled by the driving module to cut off the gas, and when the earthquake is detected by the sensing module, the gas is controlled by the driving module to cut off the gas. As a result of the measurement of the gas flow rate measured by the measurement module, if it is determined that the abnormality occurs, the driving module is controlled to shut off the gas. When the gas pressure measured by the measurement module is determined, the drive module is determined to be abnormal. Gas safety management system, characterized in that comprises a control module for blocking the gas by controlling. The method of claim 4, wherein the control module, The gas safety management system, characterized in that the gas is blocked by controlling the drive module when the gas is continuously used in excess of the preset usage time limit for each grade of gas usage. The method of claim 4, wherein the control module, If gas usage below the preset value is continuously detected for more than the preset time, it is determined as fine leakage. The gas safety management system, characterized in that the gas is blocked by controlling the drive module when the gas is continuously used in excess of the preset usage time limit for each grade of gas usage. The method of claim 4, wherein the home network device, When an earthquake detection signal is received from the gas meter, the earthquake detection is notified to the management server, The gas safety management system, characterized in that to notify the management server of the occurrence of the abnormality signal received from the gas meter. The method of claim 7, wherein When the earthquake detection signal is received from the home network device, the earthquake detection is notified to the mobile communication terminal through a wireless network, and when an abnormality signal is received from the home network device, the mobile communication terminal is notified of the abnormality occurrence through the wireless network. Gas safety management system, characterized in that further comprises a management server. 4. The method according to any one of claims 1 to 3, A wireless communication module in wireless communication with the home network device; A gas detection module detecting a gas; A temperature measuring module measuring a temperature; A drive module for driving a fire extinguisher and a gas valve; When the wireless communication module receives a gas block command signal from the home network device, the driving module controls the gas to block the gas, and when the gas leak is detected by the gas sensing module, the gas is controlled to block the gas. And an automatic fire extinguishing device including a control module which blocks the gas or drives the fire extinguisher by controlling the driving module when it is determined that the abnormality occurs as a result of checking the temperature measured by the temperature measuring module. Gas safety management system, characterized in that further comprises. The method of claim 9, wherein the home network device, When the gas detection signal is received from the automatic fire extinguishing device, the gas detection is notified to the management server, The gas safety management system, characterized in that to notify the management server of the occurrence of the abnormality from the automatic fire extinguishing device. 11. The method of claim 10, When the gas detection signal is received from the home network device, the gas detection is notified to the mobile communication terminal through a wireless network, and when an error occurrence signal is received from the home network device, the notification of the occurrence of an abnormality to the mobile communication terminal through the wireless network. Gas safety management system, characterized in that further comprises a management server. The method of claim 11, wherein at least one of the home network device and the management server, Gas safety management system comprising a function to inform the user of the gas valve status through the communication network and the user to lock the gas valve.

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