KR20070039674A - A fire detector and system for detecting fire using the same - Google Patents

Abstract

The present invention relates to a flame detection unit and a flame detection system using the same. In the dual flame detection system, a plurality of sub-lenses 1a are provided in the semicircular optical amplification lens unit 1 and the optical amplification lens unit 1 formed on the outer circumferential surface, and the ultraviolet lens sensing unit 2 that receives ultraviolet rays. And an infrared lens sensing unit (3) for receiving infrared rays; A noise signal filter unit 4 for removing noise signals from infrared electric signals and ultraviolet electric signals generated by the flame detection unit; An amplifier 5 for amplifying the infrared electric signal and the ultraviolet electric signal from which the noise signal is removed; A signal comparator 6 for comparing the signal input from the amplifier 5 to output a High (H) signal if greater than the preset reference value and to output a Low (L) signal if less than the reference value; An A / D converter 7 for converting an analog type infrared electric signal and an ultraviolet electric signal input from the amplifier 5 into a digital signal; An alarm generator 8 for generating an alarm sound; And a microcomputer 11 for controlling the alarm generator 8 so that an alarm sound is generated by the signal input from the signal comparator 6 and / or the A / D converter 7.

Description

Flame detection unit and flame detection system using the same {a fire detector and system for detecting fire using the same}

1 is a schematic configuration diagram of a flame detection unit according to the present invention;

2 is a view showing that the hood is installed in the front in the flame detection unit of FIG.

3 is a block diagram of a first embodiment of a flame detection system according to the present invention;

Figure 4 is a block diagram of a second embodiment of the flame detection system according to the present invention.

<Description of Symbols for Major Parts of Drawings>

1 ... optical amplification lens unit 2 ... ultraviolet lens sensing unit

3 ... infrared lens sensing unit 4 ... noise signal filter unit

5 ... amplification section 6 ... signal comparison section

7 ... A / D converter 8 ... Alarm generator

11 ... MICOM 12 ... CCD camera ON / OFF selector

13 ... CCD camera unit 14 ... motor control unit

15 ... rotating motor part 16 ... data transmission part

17 ... Data receiver 18 ... Image processor

19 ... Data relay 20 ... Computer for video monitoring and control

21 ... SMS text message device 22 ... Power cut detection unit

23 ... main power supply 24 ... AC-DC power supply

30 ... Battery power part 31 ... Battery level check part

32 ... Operation Key Button 33 ... LCD Display

The present invention relates to a flame detection unit capable of monitoring the fire by detecting the flame and a flame detection system using the same.

In an early fire, fine sparks occur first, and if they can be detected, they can be quite effective in preventing fires. As a technology for detecting such a flame, a technology for detecting a flame at a long distance using a parabolic light collecting plate is disclosed in Republic of Korea 10-0492189, and a Korean Patent Publication No. 2003-0016698 discloses a wide direction by installing a plurality of sensors. A technique for detecting a flame is disclosed.

However, in order to detect a wide range, the above-described technique has to install several units by calculating the distance and angle of detection, and when using multiple flame detectors in a large area (building), the detector is individually checked to check whether the detector is defective every year. Regular inspections were required. In addition, since several units have to be installed, there is a problem that it takes a lot of time and money to find out which malfunction occurred in which detector when a malfunction occurred.

The present invention has been made to solve the above problems, to provide a flame detection unit and a flame detection system using the same, which is easy to maintain and reduce installation costs by being able to detect the flame in a wider range. For the purpose of

Flame detection unit according to the present invention to achieve the above object,

A plurality of sub-lenses 1a are formed on the outer circumferential surface thereof and have a semicircular optical amplification lens unit 1 for widening a sensing angle; An ultraviolet lens sensing unit (2) installed inside the optical amplifying lens unit (1) to receive ultraviolet rays; And an infrared lens sensing unit 3 installed inside the optical amplification lens unit 1 for receiving infrared rays.

In the present invention, the optical amplification lens unit 1 may further include a hood 1b installed in front of the optical amplification lens unit 1 so that only the flame in front of the optical amplification lens unit 1 can be detected.

Flame detection system according to the present invention to achieve the above object,

A plurality of sub-lenses 1a are provided in the semicircular optical amplifying lens unit 1 and the optical amplifying lens unit 1 formed on the outer circumferential surface, and receive the ultraviolet lens sensing unit 2 and the infrared light receiving the ultraviolet rays. A fire detection sensor having an infrared lens sensing unit 3; A noise signal filter unit 4 for removing a noise signal from the infrared electric signal and the ultraviolet electric signal generated by the flame detection unit; An amplifier 5 for amplifying the infrared electric signal and the ultraviolet electric signal from which the noise signal is removed; A signal comparator 6 for comparing a signal input from the amplification unit 5 and outputting a high (H) signal if greater than a preset reference value and a low (L) signal if smaller than a reference value; An A / D converter 7 for converting an analog type infrared electric signal and an ultraviolet electric signal input from the amplifier 5 into a digital signal; An alarm generator 8 for generating an alarm sound; And a microcomputer 11 for controlling the alarm generator 8 to generate an alarm sound by a signal input from the signal comparator 6 and / or the A / D converter 7. It is done.

In the present invention, there is provided a CCD camera unit 13 for capturing the surroundings; A CCD camera ON / OFF selection unit 12 for operating the CCD camera unit 13 by a High (H) signal or a Low (L) signal generated by the signal comparing unit 6 or the microcomputer 11; A rotation motor unit 15 rotatably supporting the CCD camera unit 13; A motor controller 14 for operating the rotary motor unit 15 in response to a signal generated by the CCD camera ON / OFF selector 12; An image processor 18 for processing an image signal generated by the CCD camera unit 13; And a computer for image monitoring and control for monitoring and controlling an image according to a signal generated by the image processor 18.

In the present invention, the battery power supply unit 30 for supplying power, the battery remaining check unit 31 for displaying the remaining battery capacity of the battery power supply unit 30, and the operation key button for operating the duration of the alarm sound ( 32 and a liquid crystal display 33 for displaying the relative light quantity value of the flame detected by the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3.

Hereinafter, with reference to the accompanying drawings, a flame detection unit and a flame detection system according to the present invention will be described in detail.

1 is a schematic configuration diagram of a flame detection unit according to the present invention, Figure 2 is a view showing a hood is installed in the front of the flame detection unit of FIG.

As shown, the flame detection unit according to the present invention, a plurality of sub-lenses (1a) is formed on the outer circumferential surface of the semi-circular optical amplification lens unit 1 for widening the detection angle, and inside the optical amplification lens unit 1 It is provided, the ultraviolet lens sensing unit 2 for receiving ultraviolet rays, and the infrared lens sensing unit 3 for receiving infrared rays, which is installed inside the optical amplification lens unit 1; Since light is incident through the plurality of sub-lenses 1a formed in the optical amplification lens unit 1, the detection angle is widened and more light can be collected and amplified. The ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3 used herein are preferably implemented in a photodiode type, and the position AB of the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3 is used. By varying the sensing ability of the center and the sensing ability of the outer part can be adjusted.

 In this case, the hood 1b may be installed at the front of the optical amplification lens unit 1 to detect only the flame in front of the optical amplification lens unit 1. The hood 1b allows the flame detector to detect only the flame that is located in front of it.

Next, a first embodiment of the flame detection system according to the present invention will be described.

3 is a block diagram of a first embodiment of a flame detection system according to the present invention. As shown, the first embodiment of the flame detection system is a plurality of sub-lenses (1a) is provided in the semi-circular optical amplification lens unit 1, the optical amplification lens unit 1 formed on the outer peripheral surface, ultraviolet A fire insertion detecting unit having an ultraviolet lens sensing unit 2 for receiving the light and an infrared lens sensing unit 3 for receiving the infrared light; A noise signal filter unit 4 for removing the noise signal from the infrared electric signal and the ultraviolet electric signal generated by the flame detection unit; An amplifier 5 for amplifying the infrared electric signal and the ultraviolet electric signal from which the noise signal is removed; A signal comparator 6 for comparing the signal input from the amplifier 5 to output a High (H) signal if greater than a preset reference value and to output a Low (L) signal if less than the reference value; An A / D converter 7 for converting an analog type infrared electric signal and an ultraviolet electric signal input from the amplifier 5 into a digital signal; An alarm generator 8 for generating an alarm sound; And a microcomputer 11 for controlling the alarm generator 8 to generate an alarm sound by a signal input from the signal comparator 6 and / or the A / D converter 7.

The flame detection system further includes: a CCD camera unit 13 for capturing the surroundings; A CCD camera ON / OFF selector 12 which operates the CCD camera section 13 by the High (H) signal or the Low (L) signal generated by the signal comparing section 6; A rotation motor unit 15 rotatably supporting the CCD camera unit 13; A motor control unit 14 for operating the rotary motor unit 15 in response to a signal generated by the CCD camera ON / OFF selection unit 12; An image processor 18 for processing an image signal generated by the CCD camera unit 13; And a computer for image monitoring and control for monitoring and controlling the image by the signal generated by the image processor 18.

In the flame signal section, the ultraviolet / infrared lens sensing sections 2 and 3 are in one set and can be configured up to three sets. In this case, one set detects the 120-degree range of the entire sensing area (360-degree).

The noise signal filter unit 4 removes various high frequency noise components unnecessary for measurement from the ultraviolet / infrared electric signals generated by the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3 of the flame detection unit. The noise signal filter unit 4 is an RC low pass filter, and is composed of a combination of an appropriate number of resistors and capacitors appropriate to the characteristics of the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3, respectively.

The amplification unit 5 amplifies each ultraviolet electric signal and infrared electric signal from which the noise component is removed, and the sensitivity (Gain) set inside the amplification unit 5 is a flame detection clinical simulation experiment with each corresponding sensor. It is a eigen value obtained through ().

The signal comparator 6 determines whether or not the level of the two signals input from the amplifier 5 is compared with a reference value preset in the signal comparator 6. This reference value is a value set in the comparator inside the signal comparator 6, and outputs a high (H) signal when each signal level is greater than this reference value, and outputs a low (L) signal when it is smaller than the reference value. Done. Here, the reference value is a reference value that can be judged as a flame of a dangerous level, and is based on each output value according to the flame detection degree of the amplification part 5, and is obtained through a flame detection clinical simulation. Value.

The A / D converter 7 converts the input ultraviolet electric signal and infrared electric signal into a digital signal in the range of 0 to 8 or 16 bit through an A / D converter having 8-bit or 16-bit resolution. It enables precise analysis and also performs secondary verification of the judgment of the signal comparison section 6 above.

The output value of the A / D conversion unit 7 is input to the microcomputer 11, and the analysis and determination is performed according to the comparison operation conditions inside the microcomputer 11, the microcomputer 11 is the flame detected according to the analysis result Will be judged. That is, when the amount of light of a predetermined level or more is detected by the ultraviolet lens sensing unit 2 or the infrared lens sensing unit 3, the microcomputer 11 performs signal comparison and determines that the flame is detected.

The alarm generating unit 8 generates a primary alarm sound when the microcomputer 11 determines that a spark has occurred. At this time, after the alarm sound generation, the alarm sound duration is adjustable within a certain range according to the user's operation, it can also be terminated.

The CCD camera ON / OFF selector 12 receives the output value of the signal comparator 6 to determine whether the internal first internal switch (not shown) is ON or OFF. If the input value input to the CCD camera ON / OFF part 12 is a high (H) signal, the first internal switch is turned ON. If the input value is a low (L) signal, the second internal switch is turned OFF. do. At this time, when the first internal switch is turned on, the CCD camera unit 13 operates.

On the other hand, the CCD camera ON / OFF selector 12 receives the output value of the microcomputer 11 and determines whether the internal second switch (not shown) is ON or OFF. If the input value input to the CCD camera ON / OFF selector 12 is a high (H) signal, the second internal switch is turned ON. If the input value is a low (L) signal, the second internal switch is turned OFF. Becomes At this time, when the second internal switch is turned on, the CCD camera unit 13 operates.

The CCD camera unit 13 is mechanically mounted to the rotary motor unit 15, and is rotated left and right by the motor control unit 14 connected to the microcomputer 11, and the spark is released in accordance with the above comparison conditions. When the CCD camera unit 13 is activated, the microcomputer 11 outputs a rotating motor stop signal to the motor control unit 14 at the same time, and stops and fixes the flame at the current position where the flame is detected.

On the other hand, the microcomputer 11 outputs the primary alarm information to the data transmitter 16. That is, the microcomputer 11 stores the current position information as address data, and at the moment when the flame is detected, outputs the relative light quantity data value (AD converted value) of the corresponding address data and the detected flame to the data transmitter 16. Then, the data transmitter 16 transmits this data to the data relay device 19 of the central management center through the transmission medium. Here, the transmission medium may be applied differently depending on the communication distance. For example, 100m or less applies the RS232 communication method, and 100m ~ 300m applies the RS422 communication method. If the communication distance is more than, the optical communication equipment (optical link) can be applied.

The application of the optical link is an electro-magnetic interference (AMI) and attenuation of signals that may occur during long-distance transmission through data modulation / demodulation (electric signal ↔ optical signal conversion, infrared wavelength) or By preventing signal distortion and the like, stable long distance data communication is enabled.

The transmitted address data and flame detection light quantity data are input to the data relay device 19 of the central office, and the data relay device 19 simultaneously processes various received data to RS232 communication to the computer for image monitoring and control. This data will be transmitted. In addition, these data are displayed in the integrated software for each location section.

At the same time as the CCD camera unit 13 is turned on, the corresponding video signal is transmitted to the image processing unit of the central office through the transmission medium. Here, the transmission medium uses a coaxial cable or an optical communication device (optical link) depending on the communication distance.

The image data transmitted to the image processing unit 18 is in a standby state, and the corresponding address data is input to the image monitoring and control computer 20, and simultaneously displayed on the corresponding region by the integrated software. At this time, the image monitoring and control computer 20 transmits the alarm information for the current flame detection to the SMS text transmission device 21, and delivers the information to the user in the form of a mobile phone text message.

The user may cancel the alarm mode at the corresponding position and switch back to the flame detection mode by software operation of the computer for image monitoring and control. When performing the software corresponding function, the control signal is transmitted to the data relay device 19 via RS232 communication, which transmits a control command to the data receiver 17 at the corresponding position.

The received control data is processed by the microcomputer 11 to turn off the CCD camera unit 13 again and output a control signal to the motor control unit 14 to rotate the rotating motor unit 15 again to the left and right. Restore to state (flame detection mode).

The microcomputer 11 periodically checks the communication state with the data relay device 19. If a communication error occurs, the flame detection system for each location automatically switches to its own operation mode, and activates the alarm generator 8 to generate an alarm sound when detecting the flame.

After the first alarm sound, the flame is detected by both the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3, and the continuous real-time signal comparison algorithm of the comparator and the series by the microcomputer 11 are performed. When it is determined that the flame of the dangerous level is detected by the signal processing of the alarm, the alarm sound is generated secondarily.

On the other hand, when the power supply (+ 24Vdc Output) is cut off from the AC-DC power supply unit 24 or the main power supply unit 23, the power cut detection unit detects this, the battery power supply unit 25 automatically backup power to the flame detection system Allow to input.

Next, a second embodiment of the flame detection system according to the present invention will be described.

4 is a block diagram of a second embodiment of a flame detection system according to the present invention.

The second embodiment of the flame detection system is intended to be portable and can be used to find out whether there is any flame remaining when a fire is extinguished. For this purpose, the flame detection system includes a fire detection detector, a noise signal filter unit 4, an amplifier unit 5, a signal comparator unit 6, an A / D converter unit 7 and an alarm generation described in the first embodiment. A battery power supply unit 30 that additionally supplies power, a battery remaining power check unit 31 that displays the remaining battery capacity of the battery power supply unit 30, and an alarm sound. An operation key button 32 for operating the duration, and a liquid crystal display 33 for displaying the relative light amount value of the flame sensed by the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3.

That is, since the second embodiment is intended to be portable, the CCD camera unit 13, the CCD camera ON / OFF selection unit 12, the motor control unit 14, and the rotating motor unit 15 employed in the first embodiment are used. , The image processing unit 18, the data receiving unit 17, the data relay 19, the image monitoring and control computer 20, etc. are not employed.

Here, the signal comparator 6 determines the level of the two signals input from the amplifier 5 by comparing with a reference value set in the signal comparator 6. This reference value is a value set in the comparator inside the signal comparator 6, and outputs a high (H) signal signal when each signal level that is currently input is greater than this reference value. ) Signal is output. Here, the reference value is a value that can be determined as a ember of the recurrence level of the fire after the fire extinguishing, and is based on the respective output values according to the flame detection degree of the amplifier 5 described above.

According to the above structure, when the light amount of a predetermined level value is sensed by at least one sensor of the ultraviolet lens sensing unit 2 or the infrared lens sensing unit 3, the microcomputer 11 performs a signal comparison, It is determined that this is detected. When the flame is detected, the microcomputer 11 operates the alarm generator 8 to generate an alarm alarm sound.

At this time, after the alarm sound generation, the alarm sound duration is adjustable within a certain range by the user operating the operation key button 32, it can also be terminated.

If the flame is detected by both the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3 after the first alarm sound is generated, the continuous real-time signal comparison algorithm of the comparator and the series by the microcomputer 11 By performing the signal processing of, it is determined that the flame of the dangerous level is detected and a second alarm sound is generated. At this time, relative light quantity values of the flames sensed by the ultraviolet lens sensing unit 2 and the infrared lens sensing unit 3 are displayed on the liquid crystal display 33 in real time and continuously. When a warning sound is generated, a warning message is displayed on the liquid crystal display 33 together with the light quantity value at that time.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

As described above, according to the flame detection unit and the flame detection system using the same, when detecting a fine flame by using the infrared lens sensing unit and the ultraviolet lens sensing unit, by generating an alarm sound or by operating the CCD camera unit You can see the progress of the fire in a short time, so you can effectively extinguish it.

In addition, since a small number of flames can be detected, even in the event of a malfunction or failure, the cause can be easily identified and eliminated, thereby reducing maintenance costs and providing reliable fire detection.

And it can be implemented in a structure that is directly mounted on the building or portable, there is an action, effect that can increase the utilization more.

Claims (7)

A plurality of sub-lenses 1a are formed on the outer circumferential surface thereof and have a semicircular optical amplification lens unit 1 for widening a sensing angle; An ultraviolet lens sensing unit (2) installed inside the optical amplifying lens unit (1) to receive ultraviolet rays; And an infrared lens sensing unit (3) installed inside the optical amplification lens unit (1) to receive infrared light. 2. The spark according to claim 1, further comprising a hood (1b) installed in front of the optical amplification lens unit (1) so that the optical amplification lens unit (1) can detect only a flame in front of the flame. Detector. A plurality of sub-lenses 1a are provided in the semicircular optical amplifying lens unit 1 and the optical amplifying lens unit 1 formed on the outer circumferential surface, and receive the ultraviolet lens sensing unit 2 and the infrared light receiving the ultraviolet rays. A fire detection sensor having an infrared lens sensing unit 3; A noise signal filter unit 4 for removing a noise signal from the infrared electric signal and the ultraviolet electric signal generated by the flame detection unit; An amplifier 5 for amplifying the infrared electric signal and the ultraviolet electric signal from which the noise signal is removed; A signal comparator 6 for comparing a signal input from the amplification unit 5 and outputting a high (H) signal if greater than a preset reference value and a low (L) signal if smaller than a reference value; An A / D converter 7 for converting an analog type infrared electric signal and an ultraviolet electric signal input from the amplifier 5 into a digital signal; An alarm generator 8 for generating an alarm sound; And a microcomputer 11 for controlling the alarm generator 8 to generate an alarm sound by a signal input from the signal comparator 6 and / or the A / D converter 7. Flame detection system. The method of claim 3, A CCD camera unit 13 for picking up the surroundings; A CCD camera ON / OFF selector 12 which operates the CCD camera 13 by a high (H) signal or a low (L) signal generated by the signal comparator 6 or the microcomputer 11; Flame detection system further comprises. The method of claim 4, wherein A rotation motor unit 15 rotatably supporting the CCD camera unit 13; And a motor control unit (14) for operating the rotary motor unit (15) by a signal generated by the CCD camera ON / OFF selection unit (12). The method of claim 5, An image processor 18 for processing an image signal generated by the CCD camera unit 13; And a computer (20) for monitoring and controlling the image by monitoring and controlling the image by the signal generated by the image processing unit (18). The method of claim 3, A battery power supply unit 30 for supplying power, a battery remaining check unit 31 for displaying a battery remaining amount of the battery power supply unit 30, an operation key button 32 for operating a duration of an alarm sound, and And a liquid crystal display (33) for displaying a relative light quantity value of the flame detected by the ultraviolet lens sensing unit (2) and the infrared lens sensing unit (3).

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