KR101039133B1 - Gas and fire information display system based wireless sensor network - Google Patents

Abstract

PURPOSE: A gas and fire information display system of a network-based radio frequency sensor is provided to analyze a sensing signal by receiving the sensing signal from a sensing sensor node and display the analyzed information on a screen. CONSTITUTION: A plurality of sensing sensor nodes(200) transmits the sensed sensing information value by including the value in a situation information responding packet. A home network center control device(100) transmits a situation request packet to the sensing sensor node. The home network center control device receives a situation information responding packet corresponding to the situation information request packet.

Description

Gas and fire information display system based wireless sensor network

The present invention relates to a gas and fire information display system based on a wireless sensor network. Specifically, a wired / wireless sensor network is built in a building around a home network device, also known as a wall pad, such as a fire or a gas leak. If an abnormality appears, it is a wireless sensor network-based gas and fire information display system that allows residents to respond smarter by shutting off the gas or operating an automatic fire extinguishing device and clearly informing the residents of the current situation.

In general, a microcomputer gas meter is a gas meter with a built-in microcomputer and equipped with a shutoff valve. The microcommunication gas meter is a digital gas safety device that automatically detects a gas when a danger sign of a gas explosion occurs.

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, the microcomputer gas meter can not recognize where the gas leaks from 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 gas meter.

According to this necessity, by establishing a wireless sensor network, if there are any abnormal signs such as fire or gas leakage, the gas safety management system using wireless communication in the building, which prevents safety accidents due to gas leakage by blocking gas or operating an automatic fire extinguishing device (Domestic Application No. 10-2009-0118172, December 12, 2009) has been filed.

Gas safety management system using a wireless communication in a conventional building includes 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 the microcomputer gas meter which cuts off a gas according to a gas shutoff command signal wirelessly received from the home network device.

As shown in FIG. 1, the home network device 100 includes a carbon monoxide detection sensor node 510, a flame detection sensor node 520, a smoke detection node 530, a gas detection sensor node, which is a kind of a fire detection sensor node. 600, when the detection signal is received, the received detection signal is inspected to determine whether an abnormality occurs (e.g. smoke, flame, carbon monoxide or gas leak occurs), and when it is determined that the abnormality is detected, the gas shutoff command signal is transmitted through the wireless communication module. It transmits to the gas meter 200 to block the gas, drives the ventilation fan 800, generates an alarm sound and transmits an abnormal occurrence signal to the management server 400.

As shown in FIG. 2, the microcomputer gas meter 200 includes a wireless communication module 220 for wireless communication with the home network device 100, a driving 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.

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.

However, the gas safety management system using wireless communication in a conventional building receives a detection signal from a fire detection sensor node or a gas detection sensor node and wirelessly transmits a command signal to shut off the gas to the gas meter when it is determined that an abnormality has occurred. There was a problem that residents could not cope wisely by not providing any information visually indicating that the residents were taking any action.

The present invention is to solve the above-mentioned problem, the home network central control device receives the detection signal from the detection sensor node connected to the wireless sensor network, and analyzes and displays the analyzed information on the screen to the residents in the current situation The aim is to provide a gas and fire information display system based on a wireless sensor network that makes it possible to clearly understand and enable smart response.

One aspect of the gas and fire information display system based on the wireless sensor network of the present invention is composed of a sensing sensor each having a wireless communication module, and when the situation information request packet is received, the detected information value is included in the situation information response packet. A plurality of sensor nodes for transmitting and transmitting; And transmitting the context information request packet to the sensing sensor node, and when the context information response packet is received, analyzing the sensing information value included in the context information response packet and displaying the sensing information value. It includes.

The home network central control device may include: a wireless communication module configured to perform wireless communication with the sensing sensor node; A data processor for transmitting a context information request packet to a plurality of sensing sensor nodes through the wireless communication module and receiving a context information response packet accordingly; An information analyzer for analyzing the sensing information value included in the context information response packet when receiving the context information response packet through the data processor; And a display unit for displaying the sensing information analyzed by the information analyzer.

The apparatus may further include a database configured to store state information values of the sensing sensor node and the control device node, wherein the information analyzing unit checks the database and analyzes the sensing information value included in the context information response packet through the data processing unit. Can be.

In this case, the detection sensor is one of a smoke sensor, a carbon monoxide sensor, a temperature sensor, a fuselage sensor, a magnetic sensor, a measurement detection module and a detection module.

On the other hand, and provided with a wireless communication module, respectively, when receiving the context information request packet from the home network central control device includes the detected information sent in the context information response packet to the home network central control device, while the home network When the control unit receives the state control request packet from the central control device, the control device node for performing a corresponding control and transmits the state control response packet accordingly according to the home network central control device, wherein the home network central control device is the control device The state control response packet received from the node is analyzed and displayed to the occupant.

In this case, the control device node is one of a microcomputer gas meter for controlling the gas valve, an automatic fire extinguishing device for controlling the fire extinguisher, a curtain and a window.

Here, the home network central control device forms a wireless sensor network with a sensing sensor node using Zigbee (802.15.4), and connects the wireless sensor network with the sensing sensor node and the control device node in a star manner.

Meanwhile, the context information request packet is composed of SOP, Node ID, Address, CMD, Retry Count, MOP, and EOP fields, and the context information response packet is SOP, Node ID, Address, CMD, Ack / Data, Check sum and It consists of an EOP field.

The state control request packet is composed of SOP, Node ID, Address, CMD, Retry count, MOP, DATA, and EOP fields, and the state control response packet is SOP, Node ID, Address, CMD, Data, Check sum, and EOP. Consists of fields.

According to the above-described configuration, the gas and fire information display system based on the wireless sensor network according to the present invention receives and analyzes a detection signal from a sensing sensor node connected to the wireless sensor network by the home network central control device, and then analyzes the analyzed information. Displayed on the screen of the network central control device, the residents can clearly see the current situation, and at the same time has an excellent effect to enable a smart response.

1 is a network configuration of a gas safety management system using a wireless communication in a conventional building.
2 is an electrical block diagram of the microcomputer gas meter according to FIG. 1.
3 is an electrical block diagram of the automatic fire extinguishing device according to FIG. 1.
Figure 4 is a network diagram of a gas and fire information display system based on a wireless sensor network according to the present invention.
FIG. 5 is a functional block diagram of a home network central control device according to FIG. 4.

The following detailed description of specific embodiments provides several descriptions of specific embodiments of the present invention. However, the present invention can be implemented in many different ways, which are defined and covered by the claims. The detailed description is described with reference to the drawings, wherein like reference numerals refer to the same or functionally similar elements.

The terminology used in the description provided herein is for the purpose of describing particular embodiments of the invention only and should not be construed as limiting or limiting the invention to any particular method. Furthermore, embodiments of the present invention may include a number of novel features which are necessary to represent the overall desirable properties of the invention or to practice the invention provided herein.

4 is a functional block diagram showing the configuration of a gas and fire information display system based on a wireless sensor network according to the present invention.

As shown in FIG. 4, a gas and fire information display system based on a wireless sensor network according to an embodiment of the present invention includes a home network central control device 100, a plurality of detection sensor nodes 200, and a plurality of control device nodes. 300.

In the above-described configuration, the home network central control device 100 transmits the situation information request packet to the plurality of sensing sensor nodes 200 and then includes the situation information response packet including the sensing information values from the plurality of sensing sensor nodes 200. When received, the sensing information value included in the situation information response packet is analyzed and the sensing information value is displayed. As shown in FIG. 5, the wireless communication module 110, the data processing unit 120, and the information analyzing unit 130 are displayed. ) And the display unit 140.

The wireless communication module 110 of the home network central control device 100 performs wireless communication with the sensing sensor node 200 and the control device node 300. Here, the wireless communication module 110 configures the wireless sensor network with the sensing sensor node 200 and the control device node 300 using the Zigbee 802.15.4.

Next, the data processing unit 120 of the home network central control device 100 transmits a situation information request packet to the plurality of sensing sensor nodes 200 through the wireless communication module 110 and transmits a plurality of situation information response packets accordingly. Received sequentially from the sensor node 200.

In addition, when the information analyzer 140 of the home network central control device 100 receives the context information response packet through the wireless communication module 110, it analyzes the sensing information included in the context information response packet. In this case, the information analyzer 130 checks a database (not shown) that stores state information values of the sensing sensor node 100 and the control device node 200, and responds to the situation information through the data processor 120. The detection information value included in the packet may be analyzed.

In addition, the display 130 of the home network central control device 100 displays the detected information analyzed by the information analyzer 140.

The data processor 120 of the home network central control device 100 transmits a state control request packet for control to the control device node 300 through the wireless communication module 110.

Thereafter, when the state control response packet is received through the wireless communication module 110 and analyzed through the information analyzer 130, the result is displayed on the display 140. In this case, the information analyzer 130 checks a database (not shown) that stores state information values of the sensing sensor node 100 and the control device node 200, and responds to the situation information through the data processor 120. The detection information value included in the packet may be analyzed.

Next, the plurality of detection sensor nodes 200 detects a random risk factor and transmits a situation information response packet including the detected detection information to the home network central control device 100, and transmits the wireless communication module 210, respectively. Equipped.

Here, the detection sensor node 200 is a smoke detection sensor 221 for detecting smoke, carbon monoxide detection sensor 222 for detecting carbon monoxide, a temperature sensor 223 for detecting a temperature, a fuselage detection for detecting a human movement The sensor 224 and the magnetic sensor 225 for detecting the opening of the door or the window, the measurement sensing module 226 for detecting the flow rate and pressure of the gas and the sensing module 227 for detecting the earthquake.

At this time, the smoke detection sensor 221, the carbon monoxide detection sensor 222 and the temperature sensor 223 may be connected to or embedded in the automatic fire extinguishing device 322, the measurement detection module 226 and the sensing module 227 It may be connected to or embedded in the microcomputer gas meter 321.

When the control device node 300 receives the state control request packet from the home network central control device 100, the control device node 300 performs control according to a corresponding command, and the wireless communication module 310 is provided.

The control device node 300 may include a microcomputer gas meter 321 for controlling a gas valve, an automatic fire extinguishing device 322 for controlling a fire extinguisher, a curtain 323, a window 324, and a ventilation fan 325. .

Here, the home network central control device 100 initially transmits or periodically transmits a status information request packet to the plurality of sensor nodes 200 and the plurality of control device nodes 300.

At this time, the context information request packet transmitted by the home network central control device 100 is composed of OP, Node ID, Address, CMD, Retry Count, MOP and EOP fields as shown in [Table 1].

SOP Node ID Address Command Retry Count MOP EOP 02 00 00 00 00 FF 03

Here, SOP: Start of Packet field, Node Id: field for identifying the sensor of the detection sensor node and the control device of the control device node, Address; A field for identifying each node ID (0x00 ~ 0xFF) when there are a plurality of nodes, CMD: field for inputting command information for each node ID, Retry Count: field indicating the number of transmissions, MOP: field for packet messages , EOP: This field indicates the end of a packet.

Here, the node IDs of the plurality of sensor nodes 200 and the plurality of control device nodes 300 are as shown in Table 2 below.

Node ID Address Node Name 0x00 Central control unit 0x01 Micom Gas Meter 0x02 sprinkler system 0x03 Smoke detector 0x04 CO detector 0x05 Temperature sensor 0x06 Fuselage Sensor 0x07 Magnetic sensor 0x08 Ventilation fan 0x09 Window / curtain

Commands input to the CMD are as shown in the following [Table 3].

Node ID CMD Explanation 00 00 reset 01 01 Sensor node check 10 Read Micom Gas Meter Flow 11 Micom Gas Meter Pressure Reading 12 Reading of continuous flow time setting value 13 Read valve status, shutoff and cause of warning 02 20 Request Automatic Fire Extinguisher Status 03 30 Smoke Sensor Status Request 04 40 CO sensor status request 05 50 Temperature Sensor Status Request 06 60 Request for status of fuselage sensor 07 70 Magnetic Sensor Status Request 08 80 Ventilation fan status request 09 90 Window / Curtain Status Status Request

For example, the situation information request packet transmitted by the home network central control device 100 to be reset and transmitted to all the sensing sensor nodes 200 and the control device node 300 connected to the wireless sensor network is SOP: "02", Node ID: "00", Address: "00" (Does not exist), CMD: "00", Retry Count: "00", MOP: "FF", EOP: "03".

The sensing sensor node 200 and the control device node 300 that have received the context information request packet as described above respond to the context information request packet to the home network central control device 100 in response to the context information response. Send the packet.

At this time, the situation information response packet transmitted from the sensing sensor node 200 and the control device node 300 is SOP, Node ID, Address, CMD, Ack / Data, Check sum and EOP fields as shown in [Table 4]. consist of.

SOP Node ID Address Command Ack / Data Check sum EOP 02 00 00 00 00 to 0F 0F 03

Here, SOP: Start of Packet field, Node Id: field for identifying the sensor of the detection sensor node and the control device of the control device node, Address; Field (0x00 ~ 0xFF) to identify when each node ID is present, CMD: field to input command information for each node ID, Ack / Data: sensing sensor node 200 or control device node 300 is detected A field for inputting actual sensing data, a check sum field for inputting checksum information according to each CMD, and an EOP field for indicating the end of a packet.

In this case, the CMD field of the context information response packet transmitted by the sensing sensor node 200 and the control device node 300 may be input as shown in [Table 5].

CMD Explanation Check sum 00 reset 00 01 Sensor node value 01 10 Micom Gas Meter Flow Value 10 11 Micom Gas Meter Pressure Values 11 12 Continuous flow time setting value 12 13 Valve condition, shutoff and cause of warning 13 17 Send valve open and shut down events 17 18 Send total flow value update event 18 20 Automatic fire extinguisher status value (D0 ~ D5) response
D0: Gas valve (0x00: Closed, 0x01: Open)
D1: gas sensor (0x00: normal, 0x01: detection 0x02: disconnection)
D2: Status return (0x00: normal, 0x01: return button, 0x02: alarm stop)
D3: Fire condition (0x00: normal, 0x01: fire (intermediate valve lock),
0x02: Fire extinguisher operation) 20 30 Smoke Sensor (0x00: Normal, 0x01: Smoke Detection) 30 40 CO sensor (0x00: normal, 0x01: smoke detection) 40 50 Temperature sensor (0x00: normal, 0x01: smoke detection) 50 60 Transmit fuselage sensor status (0x00: stop, 0x01: motion) 70 Magnetic sensor (deliver 0x01 only when detected) 70 80 Ventilation Fan Status (0x00: Stop, 0x01: On) 90 Window / curtain status propagation (0x00: stop, 0x01: motion)

Here, 17 and 18 are events sent when there is a change in the sensing sensor node 200 itself, and the home network central control device 100 may transmit an Ack signal after reception.

For example, all of the sensing sensor nodes 200 and the control device node 300 that receive the context information request packet from the home network central control device 100 transmit the context information response packet including the sensing information to the home network center. To the control device 100.

The situation information response packet transmitted by the smoke detection sensor 221 is SOP: "02", Node ID: "03", Address: "00" (not present), CMD: "30", Ack / Data: "00 "Or" 01 ", Check sum:" 30 ", EOP:" 03 ".

The home network central control device 100 receiving the situation information response packet from the smoke detection sensor 221 may know that the situation information response packet is received from the smoke detection sensor 221 through the Node ID. If it is "00", it is normal, and if it is "01", it can be determined as smoke detection. Therefore, the home network central control device 100 can notify the resident of the state of the smoke detection sensor 221 through the display unit 140.

At this time, the sensing sensor node 200 and the control device node 300 converts the detected sensing information into hexadecimal when transmitting to the home network central control device 100 and inputs the situation information response packet in the reverse order in the Data field. To the home network central control device 100.

Meanwhile, the home network central control device 100 may transmit a state control request packet to the control device node 300. In this case, the reason why the home network central control device 100 transmits a state control request packet is to allow the user to block or open the gas valve, set a flow rate of the gas, or control the automatic fire extinguishing device 320. .

At this time, the state control request packet transmitted from the home network central control device 100 to the control device node 300 is SOP, Node ID, Address, CMD, Retry count, MOP, DATA and EOP as shown in [Table 6]. It consists of a field.

SOP Node ID Address Command Retry Count MOP Data EOP 02 01 00 04 00 FA 00-04 03

Here, SOP: Start of Packet field, Node Id: field for identifying the sensor of the detection sensor node and the control device of the control device node, Address; Field to identify when there are multiple node IDs (0x00 ~ 0xFF), CMD: field for inputting command information for each node ID, Retry Count: field for transmission count, MOP: field for packet message, Data: This is a packet for inputting 4 bytes of data only when the continuous flow time is set, and EOP: This field indicates the end of the packet.

Here, the CMD field of the packet transmitted by the home network central control device 100 to the control device node 300 is as shown in Table 7 below.

CMD Explanation 14 User valve shut off 15 Custom valve opening 16 Continuous flow time setting 21 Automatic fire extinguishing device control
D0: Gas valve control (0x80: Close, 0x81: Open)
D1: Alarm stop (0x81: Alarm stop request)
D2: status return (0x81: return request)
D3 ~ D4: 0x30 60 Fuselage sensor control (dining table, kitchen burner, home room, living room, bedroom position control) 80 Ventilation fan operation (0x01) 90 Window / Curtain Open / Up (0x01)

Here, when the microcomputer gas meter 321 of the control device node 300 receives a state control request packet for gas valve blocking from the home network central control device 100, the microcomputer gas meter 321 closes the gas valve and sends a state control response packet to the home network center. To the control device 100.

The automatic fire extinguishing device 322 of the control device node 300 operates the fire extinguisher when the state control request packet for operating the fire extinguisher is received from the home network central control device 100 and then transmits the status control response packet to the home network central control. Send to the device 100.

In addition, the curtain 323 and the window 324 of the control device node 300 operates the curtain control motor to open the curtain 323 or the window control motor when the state control request packet is received from the home network central control apparatus 100. After operating to control the window 324 to open, and transmits a status control response packet to the home network central control device (100).

As described above, the state control response packet transmitted by the control device node 300 to the home network centralized control device 100 in response to the state control request packet is SOP, Node ID, Address, as shown in [Table 8]. It consists of CMD, Data, Check sum and EOP fields.

SOP Node ID Address Command Data Check sum EOP 02 00 00 00 00 to 04 0F 03

Here, SOP: Start of Packet field, Node Id: field for identifying the sensor of the detection sensor node and the control device of the control device node, Address; Field (0x00 ~ 0xFF) to identify when each node ID is present, CMD: Field where command information for each node ID is input, Data: Actual sensed by sensing sensor node 200 or control device node 300 A field for inputting sensing data, Check sum: A field for inputting checksum information according to each CMD, and EOP: A field for indicating the end of a packet.

The CMD transmitted by the sensing sensor node 200 and the control device node 300 are as shown in [Table 9].

CMD Explanation data Check sum 14 User valve shut off 00 07 15 Custom valve opening 01 08 16 Continuous flow time setting 4bytes hex 09 21 Automatic fire extinguishing device control status value 3 bytes 21 60 Body detection sensor control status (position, motion detection detection transmission)
Accumulated time data transmission when no motion 5 bytes 60 80 Ventilation fan operating status 0x01 80 90 Window / Curtain Status Transmission 0x01 90

At this time, the data field is converted into hexadecimal number and input in reverse order.

Thereafter, when the home network central control device 100 converts the detected value F4H 01H into the reverse order (01F4H) and then performs the DEC conversion, it is possible to check the actual gas pressure value 500 and display it.

Although the foregoing detailed description has shown, described, and mentioned the basic novel features of the invention as applied to the various embodiments, various omissions, substitutions, and changes in the form and details of the illustrated system may be made without departing from the intention of the invention. It will be appreciated that changes may be made by those skilled in the art.

100: home network central control device 200: detection sensor node
210: wireless communication module
221: smoke detection sensor 222: carbon monoxide detection sensor
223: temperature sensor 224: fuselage sensor
225 magnetic sensor 226 measurement module
227: reduction module 300: control device node
310: wireless communication module
321: micom gas meter 322: automatic fire extinguishing device
323 curtain 324 window
325 ventilation fan

Claims (11)

A plurality of sensing sensor nodes having a wireless communication module and including a detected sensing information value in a context information response packet when the context information request packet is received; And
Transmitting a context information request packet to the sensing sensor node, and receiving a context information response packet corresponding thereto, analyzes the sensing information value included in the context information response packet and displays the sensing information value. Including,
The home network central control device,
A wireless communication module for performing wireless communication with the sensing sensor node;
A data processor for transmitting a context information request packet to a plurality of sensing sensor nodes through the wireless communication module and receiving a context information response packet accordingly;
An information analyzer for analyzing the sensing information value included in the context information response packet when receiving the context information response packet through the data processor; And
Wireless and sensor network-based gas and fire information display system including a display unit for displaying the detected information analyzed by the information analysis unit.
delete The method of claim 1,
Further comprising a database for storing state information values of the sensing sensor node and the control device node,
The information analyzing unit checks the database and analyzes the detected information value included in the context information response packet through the data processing unit.
The method of claim 1,
The detection sensor node,
Gas and fire information display system based on a wireless sensor network, characterized in that one of the smoke sensor, carbon monoxide sensor, temperature sensor, fuselage sensor, magnetic sensor, measuring module and sensing module.
The method of claim 1,
A wireless communication module is provided, and upon receiving the context information request packet from the home network central control device, the detected sensing information is included in the context information response packet and transmitted to the home network central control device. Receiving a state control request packet from the server, further comprising a plurality of control device nodes for performing the control and transmitting the state control response packet accordingly to the home network central control device;
The home network central control device,
And displaying and analyzing the state control response packet received from the control device node.
6. The method of claim 5,
The control device node,
Wireless sensor network based gas and fire information display system, characterized in that one of the micom gas meter to control the gas valve, automatic fire extinguishing device to control the fire extinguisher, curtains and windows.
The method of claim 6,
The home network central control device,
A wireless sensor network based gas and a wireless sensor network are formed by using Zigbee 802.15.4, and the wireless sensor network is connected to the sensing sensor node and the control device node in a star manner. Fire information display system.
The method of claim 1,
The situation information request packet,
To start field (SOP), detection sensor node identification field (Node ID), device identification auxiliary field (Address), command field (CMD), number of transfer fields (Retry Count), message field (MOP) and end (EOP) fields. Gas and fire information display system based on the wireless sensor network, characterized in that made.
The method of claim 1,
The situation information response packet,
Start field (SOP), detection sensor node identification field (Node ID), device identification auxiliary field (Address), command field (CMD), ac and data fields (Ack / Data), check sum field (Check sum) and end ( Gas and fire information display system based on a wireless sensor network, characterized in that consisting of the EOP) field.
6. The method of claim 5,
The state control request packet,
Start field (SOP), detection sensor node identification field (Node ID), device identification auxiliary field (Address), command field (CMD), retry count field (Retry Count) message field (MOP), data field (DATA) and end A gas and fire information display system based on a wireless sensor network, characterized in that the field (EOP).
6. The method of claim 5,
The state control response packet is,
To start field (SOP), detection sensor node identification field (Node ID), device identification auxiliary field (Address), command field (CMD), data field (DATA), check sum field (Check sum) and end (EOP) fields Gas and fire information display system based on the wireless sensor network, characterized in that made.

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