KR102295589B1 - Fire detection system - Google Patents

Abstract

The fire detection system includes a plurality of N fire detectors; M number of gateways; and a first computing device for receiving and processing data packets from the M gateways, wherein each of the N fire detectors is provided with a plurality of sensors to detect a fire, and each of the M gateways includes the N Receiving data from at least one of the fire detectors, the N fire detectors, the M gateways, and the first computing device are characterized in that they are connected by an internal network separated from the Internet.

Description

FIRE DETECTION SYSTEM

The present invention relates to a fire detection system, and more particularly, to a system capable of detecting a fire in an environment in which an internal network and an external network are separated.

For the security of the fire detection system, it is necessary to manage the main part including the fire detector for detecting fire by the internal network, and only the part that needs to report a fire using the Internet by the external network.

Domestic Patent No. 2023851 (hereinafter referred to as 'prior art') discloses an IoT smart fire detection guidance system using an existing fire detector. However, although it is described as an 'internal network' between the firefighting receiver 200 and the receiver panel server 300 in FIG. 1 of the prior art, it is unclear how the internal network and the external network are specifically separated and managed. have.

The present invention is an invention for the purpose of solving the technical problems as described above, and the main part including the fire detector for detecting fire is managed by the internal network, and only the part that needs to report a fire using the Internet An object of the present invention is to provide a fire detection system with enhanced security by being able to manage it by an external network.

The fire detection system of the present invention includes a plurality of N fire detectors; M number of gateways; and a first computing device for receiving and processing data packets from the M gateways, wherein each of the N fire detectors is provided with a plurality of sensors to detect a fire, and each of the M gateways includes the N Receiving data from at least one of the fire detectors, the N fire detectors, the M gateways, and the first computing device are characterized in that they are connected by an internal network separated from the Internet.

In addition, the data packet received by the first computing device from each of the M gateways may include a MAC address of the corresponding gateway; MAC address of the corresponding smoke detector; information on the remaining battery level of the corresponding smoke detector; and data information of the corresponding fire detector. Specifically, the data information of the fire detector may include a type of a sensor from which a detection signal is detected; an alarm signal indicating the fire hazard level for each sensor included in the fire detector; and a sensor value for each type of sensor from which the detection signal is detected.

In addition, each of the N fire detectors is configured to include a flame sensor, a smoke sensor, and a temperature sensor, and the type of sensor from which the detection signal is detected essentially includes the smoke sensor and the temperature sensor, and the flame sensor may or may not be included in the type of the sensor in which the detection signal is detected.

In addition, the sensor values for each type of the sensor from which the detection signal is detected are displayed in the order of the sensors defined in the type of the sensor from which the detection signal is detected.

Preferably, the alarm signal indicating the fire risk for each sensor included in the corresponding fire detector includes an alarm signal from the flame sensor, an alarm signal from the smoke sensor, and an alarm signal from the smoke sensor.

Specifically, the alarm signal of the flame sensor is classified into a 1-1 alarm in which the flame sensor detects a flame and a 1-2 alarm in which the flame is not detected. In addition, the alarm signal of the smoke sensor may include: a 2-1 alarm when the smoke concentration is less than or equal to the first value; a 2-2 alarm when the smoke concentration exceeds the first value; the 2-3th alarm when the amount of change in smoke concentration per unit time is equal to or greater than the second value; and a second to fourth alarm when the smoke concentration is greater than the first value and the change amount of the smoke concentration per unit time is equal to or greater than the second value. In addition, the alarm signal of the temperature sensor may include: a 3-1 alarm when the temperature value is less than or equal to the third value; 3-2 alarm when the temperature value exceeds the third value; a 3-3 alarm when the change amount of the temperature value per unit time is equal to or greater than the fourth value; and a third and fourth alarm when the temperature value exceeds the third value and the change amount of the temperature value per unit time is equal to or greater than the fourth value.

Also, the first computing device processes the data packets received from each of the M gateways to generate fire detection report information and transmits it to a third computing device, wherein the third computing device is It is connected to a network, and the first computing device and the third computing device are preferably connected by a wire.

In addition, the first computing device parses the received data packet, and compares the detection time of the pre-stored filter information and the data information of the corresponding fire detector included in the received data packet. Specifically, the filter information is characterized in that it is time information for ignoring the alarm signal for each sensor included in the fire detector.

In addition, when the detection time does not correspond to the filter information as a result of comparing the previously stored filter information with the detection time, the first computing device is configured for each sensor included in the corresponding fire detector included in the received data packet. It is preferable to determine whether a fire report is necessary by using at least one of an alarm signal indicating a fire risk level or a sensor value for each type of sensor in which the detection signal is detected.

In addition, the first computing device may generate fire report information when it is determined that a fire report is necessary, and may include: the generated fire report information; and pre-stored SMS reception number according to the MAC address of the fire detector included in the received data packet, mobile application token key information, and predetermined fire station server information; characterized in that it transmits to the third computing device.

Preferably, the third computing device transmits the fire report information received from the first computing device to the SMS reception number using the Internet, and pushes the message using the mobile application token key information. It is characterized in that it transmits the report information to the predetermined fire station server information.

In addition, it is preferable that the third computing device periodically transmits/receives a previously agreed test packet to and from the first computing device to check whether the first computing device or the connection of the first computing device is abnormal. .

According to the fire detection system of the present invention, the main part including the fire detector for detecting fire is managed by the internal network, and only the parts that need to report a fire using the Internet can be managed by the external network, so that security can be strengthened

1 is a block diagram of a fire detection system according to a preferred embodiment of the present invention.
2 is an explanatory diagram of a protocol of a data packet that a first computing device receives from a gateway;
3 is a table showing data included in a data packet;
4 is a flowchart of processing of a received data packet by a first computing device;
5 is an explanatory diagram of a third computing device;

Hereinafter, a fire detection system according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Of course, the following examples of the present invention are not intended to limit or limit the scope of the present invention only to embody the present invention. What an expert in the technical field to which the present invention pertains can easily infer from the detailed description and embodiments of the present invention is construed as belonging to the scope of the present invention.

First, FIG. 1 shows a configuration diagram of a fire detection system 100 according to a preferred embodiment of the present invention.

As can be seen from FIG. 1 , the fire detection system 100 according to the preferred embodiment of the present invention includes a fire detector 10 , a gateway 20 , a first computing device 30 , and a second computing device ( 40 ) and a third computing device 50 .

It is preferable that the fire detector 10 , the gateway 20 , the first computing device 30 , and the second computing device 40 are connected by an internal network separated from the Internet so that Internet communication cannot be performed.

In addition, it is preferable that the third computing device 50 is connected to an external network that can use the Internet. In addition, the first computing device 30 and the third computing device 50 are characterized in that they are connected by a wire. For example, the first computing device 30 and the third computing device 50 may be connected by wire using an RS-232 cable.

The fire detector 10 may be referred to as a sensor node, and includes a plurality of sensors to detect a fire, and N may be included in the fire detection system 100 . It is preferable that N is a natural number 3 or more. In addition, many sensors include flame sensors, smoke sensors, and temperature sensors.

The fire detector 10 operates using a battery as a power source. In addition, when a fire source is detected by a flame sensor, a smoke sensor, and a temperature sensor, and any one of the flame sensor, smoke sensor, and temperature sensor detects a fire source, an alarm such as a buzzer built into the fire detector 10 It is desirable to generate an alarm sound from the device.

The fire detector 10 and the gateway 20 are connected by wireless communication, and a plurality of fire detectors 10 may be connected to one gateway 20 . In addition, it is preferable that the fire detector 10 periodically transmits the detected data of the current state to the gateway 20 . Specifically, the fire detector 10 may include a type of sensor from which a detection signal is detected; an alarm signal indicating the level of fire risk for each sensor included in the corresponding fire detector 10; and a sensor value for each type of sensor from which the detection signal is detected; characterized in that it is transmitted to the gateway 20 .

However, it is preferable to repeatedly transmit data to the gateway 20 until the corresponding alarm signal does not occur depending on the alarm signal indicating the fire risk.

The gateway 20, as a repeater, receives data from at least one of the N fire detectors 10 . Preferably, M gateways 20 may be included in the fire detection system 100 , and a plurality of fire detectors 10 may be connected to one gateway 20 . In addition, it is preferable that M is a natural number of 2 or more.

The gateway 20 is operable with a constant power supply and a battery. That is, the gateway 20 is always supplied with power through the adapter, but when power is not supplied at all times, such as a power outage, the gateway 20 operates with a battery. In addition, the gateway 20 is connected to the first computing device 30 through TCP/IP socket communication to perform wired communication using an Ethernet cable, and a plurality of gateways 20 are connected to one first computing device 30 . It is preferable to be The gateway 20 serves to transfer the data received from the fire detector 10 to the first computing device 30 .

The first computing device 30 serves to receive and process data packets from the M gateways 20 . For reference, the unit data packet includes information from one fire detector 10 .

FIG. 2 shows an explanatory diagram of a protocol of a data packet that the first computing device 30 receives from the gateway 20 . In addition, FIG. 3 is a table showing data included in a data packet received from the gateway 20 by the first computing device 30 .

As can be seen from FIGS. 2 and 3 , the data packet received by the first computing device 30 from the gateway 20 includes a MAC address of the corresponding gateway 20 ; MAC address of the corresponding fire detector 10; battery level information of the corresponding smoke detector 10; and data information of the corresponding fire detector 10 .

In addition, the data information of the fire detector 10, the type of the sensor from which the detection signal was detected; an alarm signal indicating the level of fire risk for each sensor included in the corresponding fire detector 10; and a sensor value for each type of sensor from which the detection signal is detected.

The alarm signal indicating the fire risk for each sensor included in the corresponding fire detector 10 included in the data packet includes an alarm signal of a flame sensor, an alarm signal of a smoke sensor, and an alarm signal of a smoke sensor.

In addition, the alarm signal of the flame sensor is classified into a 1-1 alarm in which the flame sensor detects a flame and a 1-2 alarm in which the flame is not detected. For reference, the alarm signal of the flame sensor is included in the alarm signal indicating the fire risk for each sensor even if the flame sensor is not included in the type of the sensor from which the detection signal is detected. That is, when the flame sensor is not included in the type of the sensor from which the detection signal is detected, the alarm signal of the flame sensor indicates the 1-2 alarm.

In addition, the alarm signal of the smoke sensor is a 2-1 alarm when the smoke concentration is less than or equal to the first value; a 2-2 alarm when the smoke concentration exceeds the first value; the 2-3th alarm when the amount of change in smoke concentration per unit time is equal to or greater than the second value; and a second to fourth alarm when the smoke concentration is greater than the first value and the change amount of the smoke concentration per unit time is equal to or greater than the second value. If the change amount of the smoke concentration per unit time is equal to or greater than the second value, it means that the smoke concentration has rapidly increased, and the 2-3th alarm becomes an alarm for a preliminary warning.

The alarm signal of the temperature sensor includes: a 3-1 alarm when the temperature value is less than or equal to the third value; 3-2 alarm when the temperature value exceeds the third value; a 3-3 alarm when the change amount of the temperature value per unit time is equal to or greater than the fourth value; and third and fourth alarms when the temperature value exceeds the third value and the change amount of the temperature value per unit time is equal to or greater than the fourth value. If the change amount of the temperature value per unit time is greater than or equal to the fourth value, it means that the temperature has rapidly increased, and the 3-3 alarm becomes an alarm for a preliminary warning.

It is preferable that the type of sensor from which the detection signal included in the data packet is detected essentially includes a smoke sensor and a temperature sensor. The flame sensor is included in the type of the sensor in which the detection signal is detected when a flame is generated, but is not included in the type of the sensor in which the detection signal is detected when the flame is not generated. That is, the flame sensor may or may not be included in the type of the sensor in which the detection signal is detected.

The sensor values for each type of sensor from which the detection signal included in the data packet are detected are displayed in the order of the sensors defined in the type of the sensor from which the detection signal is detected. For example, if the order of the sensors defined in the type of sensor from which the detection signal is detected is a smoke sensor, a temperature sensor, and a flame sensor, the sensor values for each type of sensor from which the detection signal is detected are also displayed as smoke sensor, temperature sensor, and flame sensor. will become The type of the sensor from which the detection signal is detected may be classified into a smoke sensor, a temperature sensor, and a flame sensor by code.

4 shows a processing flow diagram of a received data packet by the first computing device 30 .

As can be seen from FIG. 4 , the first computing device 30 receives a data packet (S10), parses the received packet according to a sensor protocol format to extract necessary data (S20), and FCS (Frame Check Sequence) value, the validity of the corresponding data packet is checked (S30). If the validity according to the FCS value is invalid, the first computing device 30 does nothing thereafter.

In addition, if the validity according to the FCS value is suitable, the first computing device 30 compares the detection time of the data information of the fire detector 10 included in the received data packet with the pre-stored filter information (S40) . Here, the filter information is characterized in that it is time information for ignoring the alarm signal for each sensor included in the fire detector 10 . That is, if you are open in a restaurant, you can set filter information for all of the flame sensor, smoke sensor, and temperature sensor during those hours of operation, and ignore the alarm signals for the flame sensor, smoke sensor, and temperature sensor for this time. However, filter information may be individually set for a flame sensor, a smoke sensor, and a temperature sensor for the corresponding fire detector 10 .

As a result of comparing the pre-stored filter information with the detection time, the first computing device 30 transmits the received data packet information to the second computing device 40 when the detection time corresponds to the filter information ( S80), and ends.

In addition, when the detection time does not correspond to the filter information as a result of comparing the pre-stored filter information with the detection time, the first computing device 30 includes the fire detector 10 included in the received data packet. It is determined whether or not a fire report is necessary by using at least one of an alarm signal indicating the level of fire risk for each sensor or a sensor value for each type of the sensor in which the detection signal is detected (S50). However, the first computing device 30 uses only the data of the sensor whose detection time does not correspond to the filter information for the flame sensor, the smoke sensor, and the temperature sensor of the corresponding fire detector 10 to determine whether a fire report is necessary. It is preferable to judge

When it is determined that a fire report is necessary, the first computing device 30 generates fire report information ( S60 ), and includes the generated fire report information; and a pre-stored SMS reception number according to the MAC address of the fire detector 10 included in the received data packet, mobile application token key information, and predetermined fire station server information; is transmitted to the third computing device 50 (S70). ). In addition, the first computing device 30 transmits the information of the received data packet to the second computing device 40 ( S80 ), and ends.

Specifically, the first computing device 30 creates a report phrase based on the extracted data to generate fire report information.

A plurality of second computing devices 40 may be included in the fire detection system 100 . The second computing device 40 receives data from the first computing device 30 to control whether a fire has occurred.

5 is an explanatory diagram of the third computing device 50 .

As can be seen from FIG. 5 , the third computing device 50 includes an external service that transmits the fire report information received from the first computing device 30 to the outside using the Internet and the first computing device 30 . An internal network management service that manages whether a normal service is provided.

That is, the third computing device 50 transmits the fire report information received from the first computing device 30 to the SMS reception number using the Internet, and sends a push message using the mobile application token key information. and transmits the report information to the predetermined fire station server information.

Transmitting report information to the pre-specified fire station server information is to use the 119 multimedia reporting system.

In addition, the third computing device 50 periodically transmits/receives a previously promised test packet to and from the first computing device 30 , thereby indicating the connection of the first computing device 30 or the first computing device 30 . Check for any abnormalities. If the above is confirmed, the third computing device 50 transmits a message to a preset SMS reception number, and transmits a push message using the mobile application token key information.

As described above, according to the fire detection system 100 of the present invention, the main part including the fire detector 10 for detecting a fire is managed by the internal network, and only the part that needs to report a fire using the Internet is limited. It can be seen that it can be managed by an external network, so that security can be strengthened.

100: fire detection system
10: fire detector
20: gateway
30: first computing device
40: second computing device
50: third computing device

Claims (15)

A fire detection system comprising:
N number of fire detectors (10); M number of gateways 20; and a first computing device 30 for receiving and processing data packets from the M gateways 20;
Each of the N fire detectors 10 is provided with a plurality of sensors to detect a fire,
Each of the M gateways 20 receives data from at least one of the N fire detectors 10,
The N fire detectors 10, the M gateways 20 and the first computing device 30 are connected by an internal network separated from the Internet,
The first computing device 30 processes the data packets received from each of the M gateways 20 to generate fire detection report information and transmits it to the third computing device 50 ,
The third computing device 50 is connected to an external network that can use the Internet,
The first computing device 30 and the third computing device 50 are connected by a wire,
The first computing device 30 parses the received data packet, and compares the detection time of the pre-stored filter information with the data information of the corresponding fire detector 10 included in the received data packet,
The filter information is time information for ignoring the alarm signal for each sensor included in the fire detector 10,
The data packet received by the first computing device 30 from each of the M gateways 20 includes a MAC address of the corresponding gateway 20; MAC address of the corresponding fire detector 10; battery level information of the corresponding smoke detector 10; and data information of the corresponding fire detector 10;
The data information of the fire detector 10 may include a type of a sensor from which a detection signal is detected; an alarm signal indicating the level of fire risk for each sensor included in the corresponding fire detector 10; and a sensor value for each type of sensor from which the detection signal is detected,
Each of the N fire detectors 10 is configured to include a flame sensor, a smoke sensor and a temperature sensor,
The type of sensor from which the detection signal is detected essentially includes the smoke sensor and the temperature sensor,
The flame sensor may or may not be included in the type of sensor in which the detection signal is detected,
The sensor values for each type of sensor from which the detection signal is detected are displayed in the order of the sensors defined in the type of sensor from which the detection signal is detected,
The alarm signal indicating the fire risk for each sensor included in the fire detector 10 includes an alarm signal of the flame sensor, an alarm signal of the smoke sensor, and an alarm signal of the smoke sensor,
The alarm signal of the smoke sensor may include: a 2-1 alarm when the smoke concentration is less than or equal to the first value; a 2-2 alarm when the smoke concentration exceeds the first value; the 2-3th alarm when the amount of change in smoke concentration per unit time is equal to or greater than the second value; and a second to fourth alarm when the smoke concentration is greater than the first value and the change amount of the smoke concentration per unit time is greater than or equal to the second value. delete delete delete delete delete According to claim 1,
The alarm signal of the flame sensor is,
A fire detection system, characterized in that the flame sensor is classified into a 1-1 alarm that senses a flame and a 1-2 alarm that does not detect a flame. delete According to claim 1,
The alarm signal of the temperature sensor is
3-1 alarm when the temperature value is less than or equal to the third value; 3-2 alarm when the temperature value exceeds the third value; a 3-3 alarm when the change amount of the temperature value per unit time is equal to or greater than the fourth value; and a third and fourth alarm when the temperature value exceeds the third value and the change amount of the temperature value per unit time is equal to or greater than the fourth value. delete delete According to claim 1,
The first computing device 30,
As a result of comparing the pre-stored filter information with the detection time, when the detection time does not correspond to the filter information,
Determining whether or not a fire report is necessary by using at least one of an alarm signal indicating a fire risk level for each sensor included in the received data packet or a sensor value for each type of sensor in which the detection signal is detected Fire detection system, characterized in that. 13. The method of claim 12,
The first computing device 30,
When it is determined that a fire report is necessary, fire report information is generated, and the generated fire report information; and pre-stored SMS reception number according to the MAC address of the fire detector 10 included in the received data packet, mobile application token key information, and predetermined fire station server information; characterized in that it transmits to the third computing device 50 . fire detection system. 14. The method of claim 13,
The third computing device 50,
The fire report information received from the first computing device 30 is transmitted using the Internet, a message is transmitted to the SMS reception number, a push message is transmitted using the mobile application token key information, and a predetermined fire station server A fire detection system, characterized in that it transmits notification information as information. According to claim 1,
The third computing device 50,
It is characterized in that by periodically transmitting and receiving a test packet promised in advance to and from the first computing device 30, it is characterized in that it is checked whether the connection of the first computing device 30 or the first computing device 30 is abnormal. fire detection system.

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