KR101573244B1 - Sensitibity adjustable fire detection device in local area - Google Patents

Sensitibity adjustable fire detection device in local area Download PDF

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Publication number
KR101573244B1
KR101573244B1 KR1020150095655A KR20150095655A KR101573244B1 KR 101573244 B1 KR101573244 B1 KR 101573244B1 KR 1020150095655 A KR1020150095655 A KR 1020150095655A KR 20150095655 A KR20150095655 A KR 20150095655A KR 101573244 B1 KR101573244 B1 KR 101573244B1
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fire
sensor
sensitivity
detecting
unit
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KR1020150095655A
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Korean (ko)
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유정무
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주식회사 아이알티코리아
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0266—System arrangements wherein the object is to detect the exact distance between parent and child or surveyor and item
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

According to an aspect of the present invention, there is provided a fire detection apparatus capable of adjusting the sensitivity, comprising: a sensor unit including a plurality of sensors for detecting fire; and a fire detector for detecting a fire based on signals sensed from the plurality of sensors of the sensor unit There is provided a sensitivity adjustable fire sensing apparatus including a central processing unit.
The central processing unit includes: a signal input unit to which a sensor signal sensed by the plurality of sensors is input; A controller for determining whether or not a fire has occurred based on the inputted sensor signal and controlling the operation of the fire sensing apparatus; And a memory for storing a fire identification algorithm and a sensitivity adjustment algorithm, wherein the fire sensing apparatus further includes a receiver for short-range communication to be able to communicate with a terminal having an external short-range communication transmitter, And is configured to be changeable among a plurality of sensitivities each having a different effective monitoring distance by an instruction transmitted from a transmitter.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fire detection apparatus,

FIELD OF THE INVENTION The present invention relates to a fire sensing apparatus, and more particularly, to a fire sensing apparatus capable of adjusting sensitivity in a short distance.

Generally, when a fire occurs, carbon monoxide, carbon dioxide and smoke are generated at the beginning of the fire, and then the flame starts to appear. There have been studies on the alarm system by effectively measuring carbon monoxide, carbon dioxide and flame in accordance with the progress of the fire.

At the beginning of the fire, carbon monoxide is increased by more than 1,000 ppm and carbon dioxide is increased by tens of thousands of ppm. In most cases, the concentration of carbon monoxide and carbon dioxide does not increase.

In order to determine whether or not a fire has occurred, the fire monitoring system disclosed in Japanese Patent Application Laid-Open No. 10-2013-0058244 includes a carbon dioxide sensor array unit including a plurality of carbon dioxide sensors, a sensor node unit for transmitting the measured values from the carbon dioxide sensor array unit, And a receiving unit for receiving the transmitted result value and indicating whether a fire has occurred in the terminal.

With this configuration, there is an advantage that it is possible to easily monitor the occurrence of fire in the early stage of fire by sensing the concentration of carbon dioxide which increases during a fire. However, in order to detect carbon dioxide, the sensor must be installed directly inside the building, and in a place where no sensor is installed, it is not easy to detect quickly when a fire occurs.

In addition, the fire detection apparatus of Patent Publication No. 10-1098969 includes an ultraviolet ray sensor for detecting ultraviolet rays entering the fire detection apparatus, an infrared ray sensor for detecting infrared rays entering the fire detection apparatus, an ultraviolet ray sensor and an infrared ray sensor An amplifying unit for amplifying the pulse signal sensed by the amplifying unit to a digital signal; It is checked whether the wavelengths of the ultraviolet rays and infrared rays amplified by the amplification unit are included in the wavelength range recognized as a fire in the fire recognition area set in the fire judgment DB, Wealth; An optical sensor for detecting the amount of light entering the fire detector; And a fire sensitivity adjusting unit for changing a reference intensity recognized as a fire in a fire recognition area of an ultraviolet ray and an infrared ray set in the fire judgment DB of the fire judgment unit in conjunction with the light amount recognized by the optical sensor.

The prior art document has an advantage that it can detect a fire even at a long distance by measuring the infrared rays and ultraviolet rays generated in a fire, but it is difficult to grasp the size of the fire according to the distance.

In addition, the conventional fire detecting apparatus for detecting a fire at a long distance is installed at a high altitude of 15 to 50 m from the ground to easily detect a fire, and once the installation is completed, It can not be easily seen from the outside.

In addition, there may be a small number of false alarms caused by objects emitting energy similar to the fire in the surveillance area. In order to solve this confusion caused by false alarms, the sensitivity of the sensor is set to 30 ~ 50% lower than the normal sensitivity, so that even if an actual fire occurs, Lt; / RTI >

For example, in order to prevent false alarms, there has been a case in which a bad detector, which has lower sensitivity of the detector than the design rule, has been detected for several years. In the case of a fault detection device having such a low sensitivity, fire detection is not normally performed. In addition, fire caused by fire is frequent. If a fire detector immediately detects a fire caused by the ignition of a fireman and operates an automatic fire extinguishing device such as a sprinkler, and if the fire manager notifies the fire manager in real time, Could be greatly reduced. Such a fire detector should be able to prevent false alarms and detect the exact fire facts.

In order to solve the problem of the illegal sensitivity control, the government newly announced the "type approval and detailed test rules" of the detector. Major revisions of the test rules are as follows: There have been added false alarm test items for arc welding, solar light, halogen lamp, fluorescent lamp and various color lamps, which are the main causes of false alarms. Before the revision, only one nominal monitoring distance By introducing the concept of effective sensing distance that recognizes two or more sensing distances for one sensor per given sensor, it is possible to cultivate the illegal sensing sensitivity adjustment of existing flame sensor manufacturers in the system, By establishing strict test standards by distance, it is possible to test multiple effective monitoring distances by distance, Receive increased and strengthened the rules.

According to the design rule of the fire detector, a switch for adjusting the sensitivity is provided on one side of the sensor part in order to adjust the sensitivity. However, for convenience of operation, the switch should be installed outside the sensor unit. However, the switch exposed to the outside of the fire detector offers the advantage that the sensitivity of the fire detector can be controlled by operating the switch without dismantling the fire detector. However, since the sensitivity switch of the fire detector is exposed to the outside, It can be an inhibiting factor.

Also, even when the sensitivity switch of the fire detector is installed inside the fire detector, the case of the fire detector must be opened to perform the sensitivity. However, it is a very dangerous task to have a fire detector located far from the ground, opening or dismantling the case of the fire detector at this location and adjusting the sensitivity. It is also difficult to ensure complete waterproofing and explosion protection when the fire detector is disassembled and then reassembled.

Japanese Patent Application Laid-Open No. 10-2008-0110042

An object of the present invention is to provide a fire detection system capable of easily identifying an effective monitoring distance and an operation state of a fire detection sensor of a fire detector from the outside, The purpose is to provide.

The problems to be solved by the present invention are not limited to the above-mentioned problems. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

According to an embodiment of the present invention, there is provided a sensor unit including a plurality of sensors for detecting a fire, a central processing unit for determining a fire based on a signal sensed by a plurality of sensors of the sensor unit, And a control unit for controlling the fire detection unit,

 The central processing unit,

 A signal input unit to which a sensor signal sensed by the plurality of sensors is input;

A controller for determining whether or not a fire has occurred based on the inputted sensor signal and controlling the operation of the fire sensing apparatus; And

And a memory for storing a fire identification algorithm and a sensitivity adjustment algorithm,

The fire detection apparatus further includes a Bluetooth receiver for communicating with a terminal having an external Bluetooth transmitter,

The sensor unit is configured to be changeable among a plurality of sensitivities each having a different effective monitoring distance by an instruction transmitted from the Bluetooth transmitter under the control of the control unit.

The control unit may be configured to control the sensitivity of the sensor unit at different sensitivities according to an instruction transmitted from the Bluetooth transmitter, and the control unit may be configured to initialize the fire sensing apparatus by a command transmitted from the Bluetooth transmitter, The apparatus may further include a Bluetooth transmitter for communicating with a terminal having an external Bluetooth receiver, and the controller may be configured to notify a fire event to the Bluetooth receiver of the terminal when a fire occurs.

According to the present invention, there is provided a sensitivity-adjustable fire sensing apparatus including a sensor unit including a plurality of sensors for fire detection and a central processing unit for determining a fire based on signals sensed from a plurality of sensors of the sensor unit ,

The central processing unit,

A signal input unit to which a sensor signal sensed by the plurality of sensors is input;

A controller for determining whether a fire is present based on the input sensor signal; And

And a memory for storing a fire identification algorithm and a sensitivity adjustment algorithm,

The fire detection device,

And a sensitivity adjustment switch provided outside the fire detection device for adjusting the sensitivity of the sensor part and connected through a wire line

And the sensor unit is configured to be changeable among a plurality of sensitivities each having a different effective monitoring distance by the operation of the sensitivity adjustment switch.

Further, in the embodiment of the present invention,

A fire factor detecting sensor for detecting a fire factor, and a non-fire element detecting sensor for detecting a non-fire element,

The fire factor detection sensor includes a first sensor for sensing resonance energy of carbon dioxide-carbon monoxide, and a second sensor for sensing resonance energy of carbon monoxide,

The non-fire element detection sensor is preferably an infrared sensor for detecting wavelengths corresponding to infrared characteristics exhibited in arc welding, solar light, halogen lamp, fluorescent lamp, and various colored lamps.

The effective monitoring distance includes 30m, 40m, and 50m, and the fire detection device satisfies both the operation test requirement and the sub-operation test requirement at each effective monitoring distance. The operation test requirement is a distance of 1.2 times the effective monitoring distance The fire alarm should be generated within 30 seconds by pouring the water and the hutch in a prescribed ratio into the 330mm × 330mm × 50mm fire plate placed on the fire plate at 36m, 48m, and 60m, Means that a fire alarm is not generated for 1 minute or more for flames which are poured with water and heptane at a predetermined rate in a fireplace of 16.5 mm x 16.5 mm x 50 mm placed at a distance of 1.2 times (36 m, 48 m and 60 m, respectively) do.

The first sensor is a band-pass filter for detecting infrared energy having a wavelength band in the range of 3.8 탆 to 5.0 탆, and the second sensor is a band-pass filter for detecting infrared energy having a wavelength band in the range of 4.5 탆 to 4.9 탆, The third sensor may be a band-pass filter for detecting infrared energy having a wavelength band in the range of 3.9 mu m to 4.1 mu m.

Further, the fire sensing apparatus includes an LED portion for indicating a sensitivity state and an operation state of the sensor portion under the control of the control portion, and the LED portion is composed of a first LED and a second LED having different colors.

The sensor unit operates at one of a plurality of sensitivities, specifically, a first sensitivity to a third sensitivity having different effective monitoring distances, and when the sensor unit operates at the first sensitivity, the control unit lights only the first LED, 2 sensitivity, the control unit turns on the first LED and the second LED, and when the sensor unit operates at the third sensitivity, the control unit operates to turn on only the second LED, and when the fire sensing apparatus detects fire, Operates to turn off the second LED and blink only the first LED.

According to the present invention, since the sensitivity control switch is connected to the signal input unit of the fire sensing apparatus through wiring from the outside of the fire sensing apparatus, an advantage that the sensitivity can be easily controlled outside the fire sensing apparatus can be obtained.

In addition, according to the present invention, at least two LEDs having different colors are installed on the exposed surface of the fire sensing apparatus, and the sensitivity and the flickering state of the LED can easily identify the sensitivity state and the normal operation state of the fire sensing apparatus An advantage is obtained.

According to the present invention, since the Bluetooth communication module is included as the short distance communication module, the user can easily adjust the sensitivity of the fire detection device without accessing the sensitivity control switch through the terminal equipped with the Bluetooth communication module.

The problems to be solved by the present invention are not limited to the above-mentioned problems. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

1 is an explanatory diagram for explaining sensitivity according to an effective sensing distance;
2 is a view showing an appearance of a fire detection device according to the present invention.
3 is a view showing a sensor part and an LED part of a fire detection device exposed to the outside according to the present invention.
4 is a view showing a wavelength detection band of the first sensor to the third sensor of the sensor unit according to the present invention.
5 is a block diagram showing an internal configuration of a fire detection apparatus according to the present invention.
FIG. 6 is a view for explaining an effective monitoring distance setting by connecting an external sensitivity adjusting switch and a signal receiving unit in the fire detection apparatus according to the present invention. FIG.
7 is a view illustrating an example of a user interface screen provided on a terminal screen of an administrator when connected through a Bluetooth communication module installed in a terminal of a manager and a fire detection device according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention. And the present invention is only defined by the scope of the claims. Accordingly, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

Like reference numerals refer to like elements throughout the specification. Moreover, terms used herein (to be referred to) are intended to illustrate embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, the technical features of the present invention will be described in detail with reference to the accompanying drawings. First, in order to facilitate understanding of the present invention, the sensitivity according to the distance of the fire sensing apparatus will be described with reference to FIG.

Normally, the fire detection device or flame detector adopts the convention that only one nominal monitoring distance is given to a conventional sensor, and the effective sensing distance concept which recognizes two or more plural sensing distances to one sensor is adopted, do.

For example, in the case of a fire detection device having three effective monitoring distances (30 m, 40 m, 50 m) as shown in FIG. 1, the type approval and verification test of the fire detection device is performed at an effective monitoring distance or 1.2 times The operation test in which the flame is poured into the flame of 330 mm x 330 mm x 50 mm placed in the distance (36 m, 48 m, and 60 m, respectively) and the flame of water and hutch is ignited within 30 seconds and a fire alarm is issued For flames ignited in the same way on a 16.5 × 16.5 mm × 50 mm fire plate placed at the same distance, the flame must meet all of the side-action tests that should not be detected for more than one minute (ie, without having to issue a fire alarm) .

It is not difficult to satisfy either one of the operation test and the sub-operation test in the approval test, but it is not easy to satisfy both of the tests. In addition, the operation test and the sub- It is very difficult to satisfy the requirements of

The method of changing the sensitivity in the present invention is a method of changing the sensitivity of infrared rays using a method in which the infrared energy is increased or decreased in proportion to the square of the distance and the generated flame is generated by injecting heptane and water into a plate of 330 mm x 330 mm x 50 mm at a distance of 50 m, After one minute passed, the infrared energy reaching the detector is assumed to be 100, and after the same flame is advanced 10 meters forward from the detector at 40 m, that is, at 50 m, the infrared energy reaching the detector is 1.2 times The size of the arriving energy increases from 100 to 144 with the same principle, and the magnitude of the arriving energy increases to 196 as the distance approaches 1.4 times at 30 m distance.

As described above, since the size of infrared energy received by the fire sensing apparatus increases with distance, the fire sensing apparatus is set to a low sensitivity (also referred to as 30 m sensitivity) in the case of a near effective monitoring distance (30 m) (Also referred to as a sensitivity of 40 m) in the case of an intermediate effective monitoring distance (40 m) and a high sensitivity (also referred to as 50 m sensitivity) in the case of a far effective monitoring distance of 50 m Are set so as to satisfy the requirements of the operation test as described above and the requirements of the non-operation test at the respective sensitivities.

2 is a view showing the appearance of a fire sensing apparatus 100 according to the present invention. 2, the fire sensing apparatus 100 includes a sensor unit 110 for sensing a fire and a case 170 formed to surround the LED unit 130 to expose the state of the fire sensing apparatus .

The sensor unit 110 includes a plurality of sensors for detecting fire, and a central processing unit 120 for controlling the sensitivity of the sensor unit 110 and determining whether or not a fire is present is housed in a cylindrical case .

A fire detection sensor unit according to the present invention includes a cylindrical body BODY, a lens (not shown) on one side thereof, and a printed circuit board (PCB) on which a sensor and an LED are mounted.

3 is a view showing the sensor unit 110 as described above in more detail. The sensor unit 110 for fire detection according to the present invention includes at least three sensors 112, 114, and 116, although not limited thereto.

The plurality of sensors constituting the sensor unit 110 are fire element detection sensors for detecting at least one fire related element and include a non-fire element detecting sensor for detecting at least one non-fire element.

More specifically, in the embodiment of FIG. 3 employing three sensors, the first sensor 112 is a sensor for sensing CO 2 and CO resonance energy when a flame (flame) is generated, Flame), and the remaining third sensor 116 is a sensor configured to detect non-fire elements other than flame rather than flame. For example, the third sensor 116 for sensing the non-fire element may be an optical sensor for sensing a wavelength range corresponding to infrared characteristics exhibited in arc welding, solar light, halogen lamp, fluorescent lamp, and various colored lamps.

For reference, a fire or flame from a fire emits radiant energy. Radiation energy can be expressed by three factors of Stefan-Boltzmann law.

[Equation]

H = Ae? T 4

Where H is the radiant energy per hour, A is the surface area, e is the emissivity of the radiator, sigma is the constant of Stephan Boltzmann and T is the temperature of the radiator. The radiant energy increases with the temperature value of the copying object. The detection of the resonance energy of carbon dioxide will be described as follows.

In the present invention, as described above, the phenomenon called carbon dioxide resonance radiation existing in the infrared ray emitted from the flame is utilized. Carbon dioxide exhibits two emission spectrum peaks in the near-infrared band, with gray emission and carbon dioxide resonance emission, and in the present invention carbon dioxide resonance emission is used rather than gray emission. To further increase the precision of fire detection, the present invention is designed to further utilize the resonant emission of carbon monoxide.

The carbon dioxide resonance radiation means that the energy released by the carbon dioxide in the excited state is absorbed by other carbon dioxide in the ground state, and the energy released by the carbon dioxide in the excited state is absorbed by the other base carbon dioxide, And the resonance characteristics of carbon dioxide are different from those of heat sources such as sunlight, lamp, and heat. Carbon monoxide resonance radiation is also similar to carbon dioxide resonance radiation.

4 is a diagram showing the detection wavelength bands of the plurality of sensors 112, 114, and 116 as described above. As shown in FIG. 3, the first sensor 112 for sensing CO 2 and CO resonance energy is a band-pass filter for detecting infrared energy (thermal energy) having a wavelength band in a range of approximately 3.8 μm to 5.0 μm And the sensor 114, which only senses the CO resonance energy, may be a band-pass filter for detecting infrared energy having a wavelength band in the range of approximately 4.5 mu m to 4.9 mu m. On the other hand, the third sensor 116 for detecting the non-fire element may be a band-pass filter for detecting infrared energy having a wavelength band in the range of 3.9 mu m to 4.1 mu m.

According to this configuration, for example, when the first sensor 112 for detecting the fire element and the second sensor 113 react with each other and the third sensor 113 for detecting the non-fire element does not react, The flame or flame is likely to be caused by fire. If the first sensor 112 and the second sensor 113 react with each other, if the third sensor 113, which detects the non-fire element, largely responds, It can be judged that there is a high possibility of being caused by a factor.

Referring again to FIG. 3, an LED unit is provided on the exposed surface of the fire sensing apparatus 100, and the LED unit 130 includes a plurality of LEDs (light emitting diodes) emitting light of different colors. As shown in FIG. 3, the LED unit 130 includes a first LED 132 emitting red light and a second LED 134 emitting green light, in this embodiment, although not limited thereto. The LED unit 130 is provided to indicate an operation state of the fire sensing apparatus, which will be described later.

5 is a block diagram schematically showing a configuration of a fire sensing apparatus 100 according to the present invention. 5, the fire sensing apparatus 100 according to the present invention includes a sensor unit 110 including a plurality of sensors for detecting a fire, a fire detector 110 for detecting a fire based on a signal input from the sensor unit 110, An LED unit 130 for indicating the state of the sensor unit 110 and a fire state, a sensitivity adjustment input device 140 for adjusting the sensitivity from the outside, And a short range communication module 150 for communication.

The sensor unit 110 including the plurality of sensors 112, 114, and 116 for detecting a fire in the fire sensing apparatus 100 has been described above with reference to FIGS. 3 and 4, Omit it.

The sensor unit 110 including the fire element detection sensors 112 and 114 and the non-fire element detection sensor 116 outputs the detection values in the respective wavelength bands to the signal input unit 122 of the central processing unit (MCU) 120 And the central processing unit (MCU) functions to determine whether or not to fire based on the sensed values from the respective sensors received.

The central processing unit 120 includes a sensor unit 110, a sensitivity adjustment switch 140 or a signal input unit 122 configured to receive a signal from the local communication module, And a memory 128 for storing a sensitivity adjustment algorithm used for setting the sensitivity of the sensor unit 110 of the fire sensing apparatus 100 and a fire determination algorithm for determining whether a fire is present.

The signal input unit 122 receives a signal sensed by the sensor unit 110 or receives a sensitivity value set by the user through the sensitivity adjustment switch 140 or receives data input from the short range communication module 150 And transmits it to the control unit 124.

The control unit 124 controls or processes the signals input from the signal input unit 122. For example, when a flame occurs, the first to third sensors 112, 114, and 116 of the sensor unit 110 transmit the sensed values to the control unit 124, And determines whether the generated flame is caused by a fire or a non-fire element (welding, lighter fire), and notifies the outside through the signal output unit 126. [

The fire identification algorithm may be a carbon dioxide-carbon monoxide waveform characteristic, a carbon monoxide waveform characteristic, a non-fire element waveform characteristic, or a combined waveform thereof detected from the first to third sensors 112, 114, (Ratio) is compared with the waveform characteristics corresponding to the fire stored in the memory and the waveform characteristics corresponding to the non-fire. For example, the amount detected by the fire factor detection sensor (the first sensor 112 and the second sensor 114) is compared with the amount detected by the non-fire factor detection sensor (the third sensor 116) If the detected amount from the non-fire factor detecting sensor 116 is larger than the amount detected by the fire factor detecting sensors 112 and 114 or is greater than or equal to a predetermined amount, the control unit 124 determines that the detected flame is caused by fire The amount detected by the non-fire factor detecting sensor 116 may be larger than the amount detected by the fire factor detecting sensors 112 and 114 or may be larger than the amount detected by the fire factor detecting sensors 112 and 114. Alternatively, The control unit 124 determines that the detected flame is generated by the fire, stores it in the memory 128 as a fire event, and transmits the fact to the fire-receiving board or displays it through the LED 130 Action The.

Next, the sensitivity adjustment switch 140 will be described with reference to FIG. The sensitivity adjustment switch 140 is disposed to be separated from the body (or the case 1700) of the fire sensing apparatus 100 shown in FIG. 2 so as to facilitate access by an administrator and, if necessary, And are electrically connected to each other.

As shown in FIG. 6, the sensitivity adjustment switch 140 includes three terminals. The first terminal T1 is commonly connected to a negative DC power source and the second terminal T2 and the third terminal T3 are connected to a DC negative DC power source to which the first terminal T1 is connected. ) Through a switch. In such a configuration, when the second terminal T2 and the third terminal T3 are open to the DC power source DC -, the input terminals I1, I2, and I3 of the signal input unit 122 of the central control unit 120 are connected to each other, I3, H, L, and L, respectively, and the control unit performs a sensitivity adjustment algorithm stored in the memory to set the effective monitoring distance to be 30 m (setting the sensitivity of the sensor unit 110 to a low level).

On the other hand, when the second terminal T2 is connected to the DC power source DC - and the third terminal T3 is open, the input terminals I1 and I2 of the signal input unit 122 of the central control unit 120 H, and L are input to I3 and I3, respectively, and the controller performs a sensitivity adjustment algorithm stored in the memory to set the effective monitoring distance to 40 m (the sensitivity of the sensor unit 110 is set to medium sensitivity).

When both the second terminal T2 and the third terminal T3 are connected to the DC power source DC-, the input terminals I1, I2 and I3 of the signal input section 122 of the central control unit 120 H, H and H, respectively, and the controller performs a sensitivity adjustment algorithm stored in the memory to set the effective monitoring distance to be 50 m (sets the sensitivity of the sensor unit 110 to high sensitivity).

Therefore, in order to adjust the sensitivity of the conventional fire monitoring device, the user moves to the place where the fire monitoring device is installed (approximately 15m to 50m or more from the ground) so as to safely control the sensitivity of the fire monitoring device .

The sensitivity of the fire detection system is relatively easy to observe by the operator during the day when the worker resides in a lot of days. It is possible to further prevent a non-fire alarm from being generated. On the other hand, in the case of a night without a worker, by setting the fire detection apparatus to a high sensitivity, it is possible to more accurately detect a flame or flame caused by a fire.

Also, although not shown, the central processing unit may further include a timer unit, and the timer unit may be configured to automatically change the sensitivity of the fire sensing apparatus by the time zone set by the user. For example, a sensitivity of 30 m may be set in the time zone from 9:00 am to 6:00 pm, and a sensitivity of 50 m may be set in the time zone from 6:00 pm to 9:00 am the next day so that the fire detection apparatus can automatically adjust the sensitivity have.

Referring again to FIG. 5, the signal input unit 122 is further configured to receive a sensitivity adjustment command from the local communication module 150 in addition to the sensitivity adjustment switch 140. It is apparent to those skilled in the art that the communication module 150 may be a local area communication module, preferably a Bluetooth 4.0-based communication module 150, but is not limited thereto.

In the following description, the Bluetooth 4.0 communication module will be described as an example. Bluetooth refers to a communication standard that allows data to be transmitted and received using a frequency of 2.4 GHz band on a short distance of about 10 m to 100 m. Such a communication standard may be used to handle crosstalk occurring when the same frequency is used, It includes the specifications agreed for identification. The short range communication module or Bluetooth receiver 150 performs with the corresponding Bluetooth transmitter of the mobile terminal 200. Specifically, the Bluetooth receiver 150 installed in the fire sensing apparatus 100 receives a control signal transmitted from a Bluetooth transmitter on the terminal 200 side, for example, a sensitivity control signal and a fire detector reset signal.

7 is a diagram showing an example of a Bluetooth control screen in the terminal 200 of the administrator. As shown in FIG. 7, the user or the manager registers the fire detection device through Bluetooth pairing through the Bluetooth control screen, pairs and connects the corresponding fire detection device when necessary, and controls the sensitivity of the sensor part, Setting the sensitivity level, setting the sensitivity level, resetting the fire sensing device, and the like, and the control unit controls the operation of the fire sensing device based on the command transmitted from the Bluetooth transmitter.

Also, although the short-range communication module 150 provided in the fire sensing apparatus has been described as a Bluetooth receiver in the above-described embodiment, the present invention is not limited to this and may be a two-way Bluetooth communication module 150 capable of transmitting / receiving Bluetooth. In this case, if the fire detection device detects a fire, the control unit may notify the fire alarm to the Bluetooth communication module of the manager terminal 200 by a Bluetooth method.

The Bluetooth transmitter and Bluetooth receiver 150 of the present invention conform to the Bluetooth Low Energy standard. The Bluetooth low energy standard has a relatively small duty cycle and can be produced at a low cost as compared with the Bluetooth standard, and the power consumption through the low data rate can be greatly reduced. The Bluetooth low energy standard can be implemented in two modes: dual mode and single mode. The dual mode is a mode in which existing Bluetooth and low-energy technology coexist, and is mainly used for a mobile terminal such as a mobile phone. A single mode is used for a stand-alone product such as a sensor, and a protocol structure is the same as a dual mode. The Bluetooth low energy standard of the Bluetooth transmitter and the Bluetooth receiver of the present invention can be implemented in either the dual mode or the single mode described above.

The terminal 200 may be a conventional mobile phone such as a cellular phone, a personal communication service (PCS) phone, a GSM phone, a CDMA-2000 phone or a WCDMA phone, a portable multimedia player (PMP), a personal digital assistant An installable smart phone, or an MBS (Mobile Broadcast System) phone.

Referring again to FIG. 5, the fire sensing apparatus 100 according to the present invention is provided with an LED unit 130 for visually displaying status information. The LED unit 130 includes a first LED 132 emitting light in red, and a second LED 134 emitting light in green, although not limited thereto. The first LED 132 and the second LED 134 are advantageous for visual distinction to emit light of different colors and can be selected from two different colors of red, green, blue, and yellow.

[Table 1] Status information display by LED

Figure 112015065068050-pat00001

As shown in Table 1, when the fire sensing apparatus operates at a sensitivity of 30 m, only the first LED 132 is turned on (the second LED 134 is turned off) during normal monitoring, and when the fire is detected, .

Meanwhile, when the fire detector operates at a sensitivity of 40 m, the controller illuminates and displays the first LED 132 and the second LED 134 during normal monitoring, and controls the first LED to blink when a fire is detected.

Also, when the fire sensing apparatus is set to a sensitivity of 50 m, only the second LED 134 lights up during normal monitoring, and the first LED 132 flashes when a fire is detected.

Therefore, it is preferable to select the first LED as a red color that visually displays an emergency situation, and the second LED as a blue or green color.

According to such a configuration, the color of the LED and the flashing state of the LED installed on the exposed surface of the fire detection apparatus can be easily recognized by the manager whether the fire detection apparatus is currently operating at the sensitivity and the fire detection state Can be.

Although the LED unit 130 is described as being composed of two LEDs, that is, the first LED 132 and the second LED 134 in the above-described embodiment, the present invention is not limited thereto, (30 m sensitivity, 40 m sensitivity, and 50 m sensitivity) for each color, and only one LED (red) blinks when a fire is detected in the same manner as in the above embodiment .

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention by those skilled in the art. Therefore, the embodiments disclosed in the present invention are for illustrative purposes only and are not intended to limit the scope of the present invention, and the scope of the present invention is not limited by these embodiments.

Therefore, the scope of the present invention should be construed as being covered by the following claims rather than being limited by the above embodiments, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: fire detection device 130: LED part
132: first LED 134: second LED
120: central processing unit 110:
122: signal input unit 124:
126: Signal output unit 128: Memory
140: Sensitivity adjustment switch 150: Local area communication module
200: terminal

Claims (10)

A sensor device comprising: a sensor section including a plurality of sensors for detecting a fire; and a central processing unit for determining a fire based on signals sensed from the plurality of sensors of the sensor section,
The sensor unit includes:
A fire factor detecting sensor for detecting a fire factor, and a non-fire element detecting sensor for detecting a non-fire element,
Wherein the fire factor detection sensor includes a first sensor for sensing resonance energy of carbon dioxide-carbon monoxide, and a second sensor for sensing resonance energy of carbon monoxide,
The non-fire element detecting sensor is a third sensor for detecting a wavelength corresponding to an infrared characteristic exhibited in arc welding, solar light, a halogen lamp, a fluorescent lamp, and various colored lamps,
The central processing unit,
A signal input unit receiving sensor signals sensed by the plurality of sensors;
A control unit for determining whether or not a fire has occurred based on the input sensor signal and controlling an operation of the fire sensing apparatus; And
And a memory for storing a fire identification algorithm and a sensitivity adjustment algorithm,
The fire sensing apparatus further includes a receiver for short-range communication to be able to communicate with a terminal having an external short-
Wherein the sensor unit is configured to be changeable among a plurality of sensitivities each having a different effective surveillance distance by a command transmitted from the transmitter for short range communication under the control of the control unit.
The method according to claim 1,
Wherein the control unit is configured to control the sensitivity of the sensor unit at different sensitivities in accordance with an instruction transmitted from a transmitter for a local communication.
3. The method of claim 2,
Wherein the control unit is configured to initialize the fire sensing apparatus by an instruction transmitted from a transmitter for a short-range communication.
The method of claim 3,
Wherein the fire sensing apparatus further comprises a transmitter for a local communication so as to be able to communicate with a terminal having an external local communication receiver, and the controller is configured to notify a fire event to a local communication receiver of the terminal when a fire occurs.
A sensor device comprising: a sensor section including a plurality of sensors for detecting a fire; and a central processing unit for determining a fire based on signals sensed from the plurality of sensors of the sensor section,
The sensor unit includes:
A fire factor detecting sensor for detecting a fire factor, and a non-fire element detecting sensor for detecting a non-fire element,
Wherein the fire factor detection sensor includes a first sensor for sensing resonance energy of carbon dioxide-carbon monoxide, and a second sensor for sensing resonance energy of carbon monoxide,
The non-fire element detecting sensor is a third sensor for detecting a wavelength corresponding to an infrared characteristic exhibited in arc welding, solar light, a halogen lamp, a fluorescent lamp, and various colored lamps,
The central processing unit,
A signal input unit receiving sensor signals sensed by the plurality of sensors;
A control unit for determining whether a fire is present based on the input sensor signal; And
And a memory for storing a fire identification algorithm and a sensitivity adjustment algorithm,
The fire detection device includes:
And a sensitivity adjustment switch provided outside the fire sensing device for adjusting the sensitivity of the sensor unit and connected through a wire line
Wherein the sensor unit is configured to be changeable among a plurality of sensitivities each having a different effective monitoring distance by the operation of the sensitivity adjustment switch.
delete 6. The method of claim 5,
Wherein the effective monitoring distance includes 30m, 40m, and 50m, and the fire sensing apparatus satisfies both the operation test requirement and the sub-operation test requirement at each effective monitoring distance,
The operation test requirement is to detect flame in 30 seconds by pouring water and haptane at a prescribed rate into a 330 mm × 330 mm × 50 mm hot plate at a distance of 1.2 times the effective monitoring distance (36 m, 48 m and 60 m, respectively) Fire alarm should be generated,
The sub-operation test requirement here is that for flame which has been poured with water and haptane at a specified rate into a 16.5 mm × 16.5 mm × 50 mm hot plate placed at a distance of 1.2 times the effective monitoring distance (36 m, 48 m and 60 m, respectively) A fire alarm with adjustable sensitivity means that the fire alarm does not occur for over a minute.
6. The method of claim 5,
Wherein the first sensor is a band-pass filter for detecting infrared energy having a wavelength band in the range of 3.8 탆 to 5.0 탆,
The second sensor is a band-pass filter for detecting infrared energy having a wavelength band in the range of 4.5 mu m to 4.9 mu m,
Wherein the third sensor is a band-pass filter for detecting infrared energy having a wavelength band within a range of 3.9 mu m to 4.1 mu m.
6. The method of claim 5,
The fire sensing apparatus includes an LED unit for displaying a sensitivity state and an operation state of the sensor unit under the control of a control unit, the LED unit including a first LED and a second LED having different colors, Device.
6. The method of claim 5,
Wherein the sensor unit operates in one of a first sensitivity to a third sensitivity,
The control unit lights only the first LED when the sensor unit operates at the first sensitivity and the control unit lights the first LED and the second LED when the sensor unit operates at the second sensitivity, The control unit operates to turn on only the second LED, and when the fire sensing apparatus detects a fire, the control unit controls the second LED to turn on and the first LED to blink only, Device.
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KR101817730B1 (en) 2017-05-11 2018-01-11 주식회사 아이알티코리아 Fire detection device having a plurality of sensor groups for preventing false alarm

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JP2003217047A (en) * 2002-01-22 2003-07-31 Nohmi Bosai Ltd Flame detector
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JP2010198406A (en) * 2009-02-26 2010-09-09 Aiphone Co Ltd House fire alarm

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JP2003217047A (en) * 2002-01-22 2003-07-31 Nohmi Bosai Ltd Flame detector
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JP2010198406A (en) * 2009-02-26 2010-09-09 Aiphone Co Ltd House fire alarm

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101817730B1 (en) 2017-05-11 2018-01-11 주식회사 아이알티코리아 Fire detection device having a plurality of sensor groups for preventing false alarm
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