KR100499357B1 - System for Detecting Fire and Method thereof - Google Patents

Abstract

The fire detection system according to the present invention is to immediately transmit the fact of fire occurrence and the location of fire occurrence to a person in charge immediately when a fire occurs, and the fire detection system of the present invention provides a fire occurrence distance and a fire occurrence distance through a change in current flow and resistance value. After receiving the fire information from the transceiver and the transceiver for transmitting the fire information including the occurrence of the fire and the distance of the fire by calculating the change in the resistance value by the change of the current flow to determine the And a notification unit for contacting the corresponding voice data to a pre-stored telephone number.

Description

Fire detection system and detection method {System for Detecting Fire and Method

The present invention relates to a fire detection system and a detection method thereof, and more particularly, to a fire detection system and a detection method using a wired or wireless communication network.

With the recent industrialization or informatization of society, the demand for national backbone networks such as power lines and communication networks has exploded. Accordingly, in establishing the national backbone network, many such backbone networks are installed underground to safely protect the national backbone network from natural disasters and artificial accidents and improve the aesthetics of the city.

As such, installing a national backbone network in the basement has several advantages, but when a fire breaks out due to overheating, disconnection, or short circuit, it is not possible to quickly find out the occurrence of the fire and the location of the fire. It has a fatal drawback in that it cannot be notified quickly of a fire. These shortcomings have been a major factor in increasing the magnitude of the damage by making it difficult to extinguish the fire early.

The present invention has been made to solve the above problems, and to provide a fire detection system and a method for detecting the same that can quickly determine its location in the event of a fire in the basement network such as power lines and communication networks underground.

In order to achieve the above object, the present invention includes a detection unit, a transceiver and a notification unit.

The detector detects a fire occurrence and a fire occurrence distance by changing a current flow and a resistance value.

The transmitter and the receiver calculates the change in the resistance value as the current flow changes and informs the fire information including the occurrence of the fire and the distance of the occurrence of the fire.

The notification unit receives the fire information from the transceiver and then contacts the prestored phone number with voice data corresponding to the fire information.

At this time, the sensing unit is characterized in that it comprises a sensing wire through which current flows and a sensing resistor connected to the end of the sensing wire.

In addition, the transmitting and receiving unit detects from a repeater or a repeater that applies a constant voltage to the sensing unit so that a current flows, and receives a current that changes due to a disconnection or short circuit caused by a fire and outputs a signal corresponding to the magnitude of the current. Receive control unit that receives the signal corresponding to the magnitude of the current from the unit to calculate the resistance value of the detector using a predetermined voltage level, and receives a signal according to the state of the detector from the receiving control unit to determine the fire occurrence and the fire occurrence distance A display window driver for outputting a driving signal for displaying a corresponding state, a display window for receiving a driving signal from the display window driver, and displaying information corresponding to the input signal; a control key signal for operating a transceiver and checking the status of the transceiver and the detector; Control unit and a transceiver for outputting the It characterized in that it comprises a power supply section for supplying power necessary for the operation.

Finally, the notification unit stores a DTMF signal data of the person in charge to notify by phone in the event of a fire, a program storage unit for storing a program for performing the function of the notification unit, a voice for notifying the distance of fire in the event of a fire by voice The voice data storage unit stores the data, the communication interface for performing communication with the transceiver, and the communication interface. When receiving a fire occurrence distance from the transceiver, the corresponding voice data stored in the voice data storage unit A transmission control unit for transmitting DTMF signal data stored in the notification data storage unit; a first address latch unit for reading the address of the data when the transmission control unit wants to use data of the notification data storage unit and the program storage unit; The controller stores the voice data In order to use the data, a second address latch unit for reading the address of the data and a D / A converter for converting the digital voice data corresponding to the address read from the second address latch unit into analog voice data DTMF encoder / decoder for encoding the DTMF signal data of the read address to make a call to the corresponding phone number, decoding the phone number of the incoming call, converting the DTMF signal data, and transmitting the DTMF signal data to the transmission control unit. It comprises a hook relay unit for making a call state when receiving data, a telephone connection interface for connecting a telephone, and a power supply unit for supplying power to the notification unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a fire detection system according to the present invention. As illustrated in FIG. 1, the fire detection system according to the present invention includes a detector 100, a transceiver 200, and a notification unit 300.

The detection unit 100 is to determine the occurrence of fire and the distance through the flow of current and the resistance value. In order to perform such a function, as illustrated in FIG. 2, the sensing unit includes a sensing conductor 110 through which current flows and a sensing resistor 120 connected to an end of the sensing conductor. At this time, the sensing wire 110 for the present invention is an aluminum steel wire having a diameter of 0.8 ~ 0.9mm, a resistance of 0.6Ω / m, the detection resistor 120 is an R-type 680Ω / m.

When the detection lead 110 is normal, the resistance of the detection lead 110 itself and the total resistance of the detection resistor 120 are measured. However, when the wire is disconnected due to a fire, the current does not flow and thus the total resistance value is increased. It is not measured and can cause disconnection and fire alarm.

In addition, when a short circuit occurs, the current does not flow through the sensing resistor 120, but flows through the shorted point, so that the total resistance value becomes the resistance value of the sensing wire 110 up to the shorted point. The occurrence of a fire and its distance can be grasped by such a change in resistance value. That is, if the sensing wire 110 is 100m, the total resistance value at the normal state is 0.6 * 100 + 680 = 740Ω. However, if the sensing wire 110 is short, the current is sensed. It does not flow to the resistor 120 but returns through a shorted point. Therefore, the resistance to the shorted point is 0.6 * 20 = 12 Ω, so the distance of fire can be confirmed.

Reference numeral 130 in FIG. 2 denotes a heat resistant resin insulator surrounding the aluminum steel wire, reference numeral 140 denotes a protective tape surrounding the heat resistant resin insulator, and reference numeral 150 denotes a PVC outer cover surrounding the protective tape.

Next, the transceiver of the present invention will be described in detail with reference to the accompanying drawings.

The transmitter / receiver 200 notifies visually or audibly by calculating a fire occurrence distance and a fire occurrence distance according to a disconnection or a short circuit of the detector 100, and may interwork with fire suppression-related equipment such as a sprinkler, an alarm bell, and a blower. have.

3 is a block diagram of the transceiver 200 for the present invention as described above. As shown in FIG. 3, the transceiver 200 includes a repeater 210, a reception controller 220, a display window driver 230, a display window 240, a sound driver 250, a sound output unit 260, and a control key unit. 270 and a power supply unit 280.

The repeater 210 is connected to the sensing unit 100 of FIG. 2 to apply a constant voltage to the sensing lead 110 to allow a current to flow, and receives a current that is changed by disconnection or short-circuit to correspond to the magnitude of the current. Output the signal. In this case, a plurality of sensing units 100 are connected to the repeater 210, and each of the plurality of sensing units 100 is given a unique number.

The reception control unit 220 receives a digital signal related to the unique number of the sensing unit 100 and the magnitude of the current for each unique number from the repeater 210, and uses the predetermined voltage which is stored in advance. Calculate the resistance value. The calculated resistance value is used to determine whether the corresponding detection unit 100 is in a normal state, a disconnected state, or a short state to calculate whether a fire has occurred and a fire occurrence distance.

That is, the memory 221 of the reception controller 220 has a unique number of each detector 100, an installation place of the detector 100 corresponding to the unique number, a magnitude of a predetermined voltage supplied by the repeater 210, and a resistance. Fire occurrence information is stored, including the distance according to the value. Based on the fire occurrence information, the processor 223 receives a digital signal corresponding to the magnitude of the current for each unique number from the repeater 210 and uses a predetermined voltage stored in the memory 221 to obtain a resistance value for each unique number. Calculate

The calculated resistance is the basis for judging whether it is in a normal state or a fire. When the resistance value calculated as described above with reference to FIG. 2 is 740Ω, it is determined to be normal, but when the resistance value is infinity or smaller than that, it is determined as disconnection or short circuit due to fire.

In the case of a short circuit, the reception controller 220 calculates a resistance value for each unique number, calculates a distance at which the detection unit 100 is installed, and a short circuit distance by determining a distance corresponding to the calculated resistance value. The signal for driving the fire suppression related equipment is output through 210.

The display window driver 230 receives a signal corresponding to a state of each sensing unit 100 from the reception controller 220 and outputs a driving signal for displaying the state. At this time, if the disconnection state outputs a signal for displaying the unique number of the fire detection unit 100, and in the short circuit state to display the unique number of the fire detection unit 100 and the distance the fire occurred Outputs a signal for

The display window 240 receives a driving signal from the display window driver 230 and displays information corresponding to the input signal.

The sound driver 250 receives a signal corresponding to a state of each sensing unit 100 from the reception controller 220 and outputs a driving signal for outputting a sound indicating the state. At this time, if the disconnection state outputs a driving signal for outputting a sound corresponding to the inherent number of the fire detection unit 100, and in the case of a short circuit state, the inherent number and fire of the fire detection unit 100 A driving signal for outputting a sound corresponding to the generated distance is output.

The sound output unit 260 receives a driving signal from the sound driver 250 and outputs a sound corresponding to the input driving signal.

The control key unit 270 generates a control signal for checking the state of the transceiver 200 and for manual operation of the fire suppression-related equipment and outputs it to the reception controller 220.

The power supply unit 280 supplies power required for the operation of the transceiver unit 200.

As described above, when the fire occurrence area and the fire occurrence area and the fire occurrence distance within the area are calculated by the transceiver 200, the reception control unit 220 of the transceiver 200 receives the unique number of the fire detection unit 100. And transmits the fire occurrence distance to the notification unit 300.

The notification unit 300 contacts the person in charge using the phone number data of the person in charge who has previously stored voice data including the installation area and the fire occurrence distance corresponding to the received unique number.

Next, the function and operation of the notification unit 300 will be described in detail with reference to the drawings.

4 is a block diagram of the notification unit 300 for the present invention. As shown in FIG. 4, the notification unit 300 for the present invention includes a notification data storage unit 305, a program storage unit 310, a voice data storage unit 315, a communication interface 320, and a transmission control unit 325. ), A first address latch 330, a second address latch 335, a digital / analog converter 340, a dual tone multifrequency (DTMF) encoder / decoder 345 ), Hybrid circuit 350, hook relay 355, ring signal detector 360, surge protector 365, telephone connection interface 370, I / O A port unit 375, an I / O port address latch unit 380, an I / O port address decoder unit 385, a data buffer unit 390, and a power supply unit 395 are included.

The notification data storage unit 305 includes a read / write RAM, and stores DTMF signal data, which is phone number data of a person in charge / person in charge to be notified by phone in the event of a fire. In this case, the backup data is backed up with a 5V battery (not shown) in case the power to the notification data storage unit 305 is cut off.

The program storage unit 310 is a ROM capable of only reading data, and stores a program for performing a function of the notification unit.

The voice data storage unit 315 is a ROM capable of reading and writing data, and an installation place and a fire occurrence distance of the detection unit 100 corresponding to a unique number and a fire occurrence distance of the detection unit 100 when a fire occurs. Stores voice data for notifying by voice.

The communication interface 320 is for communicating with the reception control unit 220 of the transmission and reception unit 200. In the present invention, the RS232C interface is used.

The transmission control unit 325 communicates with the reception control unit 220 of the transmission / reception unit 200 through the communication interface 320, and the inherent number and fire of the detection unit 100 where a fire has occurred from the reception control unit 220. When the generation distance is received, the corresponding voice data stored in the voice data storage unit 315 and DTMF signal data stored in the notification data storage unit 305 are transmitted. For example, if a fire occurs at the 30m point of the sensing unit 100 installed in the 3rd zone, the voice data “fire occurred at the 30m point of the 3rd zone” is transmitted.

In addition, the transmission control unit 325 additionally outputs a signal for operating the fire suppression-related equipment when receiving the fire occurrence signal input by the person, not the detection unit 100.

When the transmission controller 325 wants to use the data of the notification data storage unit 305 and the program storage unit 310 when a fire occurs, the first address latch unit 330 reads the address of the corresponding data and transmits it to the transmission control unit 325. Uses data of the read address.

The second address latch unit 335 reads the address of the data when the transmission control unit 325 wants to use the data of the voice data storage unit 315 so that the transmission control unit 325 uses the data of the read address. do.

The D / A converter 340 converts digital voice data corresponding to the address read by the second address latch unit 335 into analog voice data.

The DTMF encoder / decoder 345 receives and encodes DTMF signal data of the read address by the transmission control unit 325 to make a call to a telephone number corresponding to the DTMF signal data, and decodes a telephone number of an incoming call. Converts the signal into DTMF signal data and transmits the same to the transmission control unit 325.

The hybrid circuit unit 350 separates the input and the output into two lines on the telephone.

When the hook relay unit 355 receives the encoded DTMF signal data, the hook relay unit 355 becomes available for communication.

The ring signal detection unit 360 detects a ring signal input from the outside and transmits the ring signal to the DTMF encoder / decoder unit 345 through the hook relay unit 355 and the hybrid circuit unit 350, and the DTMF encoder / decoder unit performs the ring signal. And converts the decoded DTMF signal data into the transmission control unit 325, so that the transmission control unit 325 stores the decoded DTMF signal data in the notification data storage unit 305.

That is, the ring signal detector 360 detects the ring signal and outputs the ring signal to the DTMF encoder / decoder 345 when the phone number of the person in charge and the corresponding authority is input. To be stored).

The I / O port unit 375 is physically connected to the fire suppression-related equipment to support the input and output of fire-related signals with both parties.

The I / O port address latch unit 380 latches and transmits the address of the predetermined port to the transmission control unit 325 when a fire related signal is input through the predetermined port of the I / O port unit 375. 325 transmits a signal for action corresponding to the fire-related signal to the corresponding fire suppression-related equipment connected to the I / O port unit 375.

The I / O port address decoder 385 decodes the address latched by the I / O port address latch 380 and transmits it to the transmission control unit 325.

The data buffer unit 390 temporarily stores the data necessary for the transmission control unit 325 to process a response to a fire related signal input through the predetermined port and transmit it to a fire suppression related device connected to the I / O port. .

At this time, the ring signal detection unit 360 detects a ring signal notifying the occurrence of a fire from the outside and transmits this signal to the transmission control unit 325 through the data buffer unit so that the transmission control unit 325 performs the corresponding operation. For example, when a ring signal '* 1234 #' indicating an outbreak of fire is detected from outside, the ring signal detection unit 360 transmits the signal to the transmission control unit 325 and the transmission control unit 325 which has received this signal. ) Drives the corresponding fire suppression-related equipment by latching the address of the I / O port connected to the corresponding fire suppression-related equipment to be driven to cope with the ring signal.

Therefore, the method of determining the fact that a fire occurs in the notification unit 300 of the fire detection system of the present invention through the transmission and reception unit 200, the method of determining through the I / O port unit 375 and the outside There is a way to identify through the ring signal to notify the fire occurrence.

The surge protection unit 365 removes overcurrent or noise generated on the telephone line.

The telephone connection interface 370 includes an RJ11 interface and is an interface for connecting a telephone.

In this way, the notification unit 300 receives the unique number and the fire occurrence distance of the fire detection unit 100 through the transceiver 200, the fire means the unique number stored in the voice data storage unit 315 By transmitting the voice data corresponding to the place of fire and the distance of fire to the fire manager or the telephone of the responsible agency, it is possible to promptly and promptly notify the personnel in case of fire in the underground power line or communication network.

Reference numeral 400 denotes a 20 pin header for connecting an external device to the notification unit 300, and reference numeral 395 denotes a power supply unit for supplying power to the notification unit 300.

Such a present invention is applicable not only to the equipment installed underground but also to the equipment installed on the ground.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive.

The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the present invention has an effect of drastically reducing property damage and human injury caused by fire by notifying a person in charge of the area and distance of fire when a fire occurs.

1 is a block diagram of a fire detection system according to the present invention.

2 is a structural diagram of a sensing unit for the present invention.

Figure 3 is a block diagram of a transceiver for the present invention.

4 is a block diagram of a notification unit for the present invention.

Claims (14)

Detecting unit for determining the distance from the fire occurrence and transmission and reception unit to the fire occurrence point through the flow of current and the resistance value; A transmission / reception unit configured to calculate a change in a resistance value based on the change in the current flow and inform fire information including a fire occurrence and a distance from a transmission / reception unit to a fire occurrence point; And And a notification unit for receiving voice information corresponding to the fire information to a pre-stored telephone number after receiving the fire information from the transceiving unit through a communication interface for communicating with the transceiving unit. The method of claim 1, The detection unit, And a sensing resistor connected to a sensing conductor through which a current flows and an end of the sensing conductor. The method of claim 2, The detection wire is 0.8 ~ 0.9mm in diameter, 0.6Ω / m aluminum wire with a resistance, the detection resistance is a fire detection system, characterized in that the R-type 680Ω. delete delete The method of claim 1, Fire information displayed on the transmission and reception unit, characterized in that output through the sound output unit or displayed through the display window. The method of claim 1, The notification unit, A notification data storage unit for storing DTMF signal data of a person to be notified by telephone in the event of a fire; A voice data storage unit for storing voice data for notifying a distance from a transceiver to a fire occurrence point by a voice when a fire occurs; A communication interface for performing communication with the transceiver; A transmission control unit communicating through the communication interface and transmitting the voice data and the DTMF signal data when receiving a distance from the transceiver to a fire occurrence point; A DTMF encoder / decoder for encoding the DTMF signal data of the read address to make a call to a corresponding telephone number, decoding the telephone number of an incoming call, converting the DTMF signal data, and transmitting the DTMF signal data to the transmission control unit; A hook relay unit configured to make a call when receiving the encoded DTMF signal data; A fire detection system comprising a telephone connection interface for connecting a telephone. The method of claim 7, wherein A fire detection system further comprising an I / O port unit physically connected to the fire suppression-related equipment to support input and output of fire-related signals. The method of claim 7, wherein And a ring signal detection unit for detecting a ring signal input from the outside and transmitting the DTMF encoder / decoder unit to the DTMF encoder / decoder unit through the hook relay unit. The method of claim 8, The voice data storage unit of the notification unit further stores an installation area corresponding to the unique number, and transmits the unique number of the detection unit where the fire has occurred and the distance from the transceiver unit to the fire occurrence point through the transceiver to the transmission control unit. And a transmission control unit transmits voice data indicating a distance from the fire occurrence zone and the transmission / reception unit to the fire occurrence point to the telephone number stored in the notification data storage unit. The method of claim 7, wherein The apparatus further includes a ring signal detector configured to transmit the ring signal to the transmission controller to output a signal corresponding to the corresponding operation through the I / O port unit when a ring signal indicating a fire is detected from the outside. Fire detection system, characterized in that. delete delete delete