KR20220163793A - Dual optical smoke detector - Google Patents

Abstract

The present invention relates to a dual optical smoke detector which comprises: a sensor board disposed on a central portion of the top side to have a dual smoke sensor which emits different wavelength bands to sense introduced smoke and include an LED and a reset switch disposed respectively on a front side and a rear side of the dual smoke sensor; a power board having the sensor board coupled thereto to be spaced apart therefrom, and having a power supply unit connected to a control means; the control means joined to a lower surface of the sensor board, analyzing information on scattering of light with different infrared wavelength bands, which is transmitted by the dual smoke sensor, to calculate data for a change in light scattering, and analyzing the calculated data for the change in light scattering to generate information on the type of smoke, thereby controlling the driving of the LED and a speaker; an upper body joined to the sensor board and the power board and having a screen disposed on a circumferential surface; and a lower body joined detachably to the upper body to have a board support where the power board is seated. Accordingly, the precision of classifying smoke particles, dust, or vapor particles can be enhanced.

Description

Dual optical smoke detector {Dual optical smoke detector}

The present invention relates to a dual optical smoke detection device, and more particularly, constitutes a plurality of infrared light emitting diodes and light receiving diodes, emits infrared rays of different wavelengths from each infrared light emitting diode, measures light scattering, and measures light scattering. A dual optical smoke detection device capable of improving discrimination accuracy between fire smoke particles and dust or vapor particles by analyzing different wavelength bands of light scattering to identify particle sizes of different types of smoke, dust, and water vapor.

In general, interlocking and independent fire detectors are largely classified into constant temperature detectors that detect indoor temperature and photoelectric smoke detectors that detect indoor smoke particles by light scattering according to their sensing methods.

The photoelectric smoke detector uses a luminous sensor that emits light by attaching it to an installation object, including the indoor ceiling or wall of a building, and a light-receiving sensor that receives the light emitted from the luminous sensor to detect smoke entering the darkroom inside. When the light emitted from the light emitting sensor is scattered by smoke and received by the light receiving sensor, the change in concentration caused by the presence of smoke is converted into a predetermined electrical signal and detected, and an alarm device is operated to cause a fire to a person staying indoors. to inform you so that you can respond quickly.

For example, Korean Patent Publication No. 10-2021-0054098 discloses a darkroom plate accommodated inside the main body and having a plurality of guide vanes for guiding the air introduced through the air inlet hole along the outer circumference to the central region, and ; a cover plate coupled to an upper portion of the guide feather to block external light from entering; a smoke sensor unit provided on the darkroom plate to sense the inflow of smoke into the darkroom plate; a test unit provided at one side of the smoke sensor unit and inspecting whether the smoke sensor unit operates normally; When a test signal for the smoke sensor unit is received, a control unit operates the test unit to determine whether the smoke sensor unit is normally operating, and when smoke does not flow in, an optical shutter of the infrared rays is directed to the light receiving member. A smoke detector capable of automatically inspecting whether or not the smoke sensor unit operates normally has been disclosed.

According to the above-mentioned prior art literature, in the case of a light emitting diode and a photodiode built inside a darkroom board, when particles such as smoke in the air enter the smoke sensor unit, they are scattered by the smoke particles and detected by the photodiode. At this time, the smoke concentration is configured to be measured in proportion to the amount of scattered infrared light.

However, in the case of the prior art described above, since infrared rays having a central wavelength of a single wavelength band are projected, there is a problem in that a fire alarm occurs even under conditions unrelated to fire, such as steam or dust in the surrounding environment.

In addition, in the case of the prior art described above, since the particle size of smoke, dust, and water vapor cannot be known, dust or water vapor is detected regardless of whether a fire occurs, resulting in a false alarm operation.

The background art or prior art described above is only to help understand the technical significance of the present invention, and does not mean a widely known technique in the technical field to which the present invention belongs prior to the filing of the present invention.

Republic of Korea Patent Publication No. 10-2021-0054098

In order to solve this problem, the present invention has been made by the above-described background art, and configures a plurality of infrared light emitting diodes and light receiving diodes, and measures light scattering by emitting infrared rays of different wavelengths from each infrared light emitting diode. and by analyzing different wavelength bands of the measured light scattering to identify the particle size of different types of smoke, dust and water vapor, a dual optical smoke detection device that can improve the accuracy of distinguishing between fire smoke particles and dust or water vapor particles. Its purpose is to provide

In addition, the present invention provides a dual optical smoke detection device capable of minimizing damage caused by false alarms by distinguishing malfunctions of alarm output such as fire smoke, water vapor, and dust when outputting an analyzed smoke alarm. Its purpose is to provide

However, the object of the present invention is not limited thereto, and even if not explicitly mentioned, the purpose or effect that can be grasped from the solution or embodiment of the problem is also included therein, of course.

According to an embodiment of the present invention for achieving the above object, a dual smoke sensor is configured in the upper center portion and detects incoming smoke by emitting different wavelength bands, respectively, and is configured in front and rear of the dual smoke sensor. A sensor board comprising LEDs and reset switches, respectively; a power board to which the sensor board is spaced apart and comprising a power supply unit connected to the control means; Coupled to the lower surface of the sensor board, analyzing light scattering information of different infrared wavelength bands transmitted from the dual smoke sensor to calculate light amount change data, and analyzing the calculated light scattering change data to generate smoke type information, Control means for controlling the driving of the LED and the speaker; An upper body in which the sensor board and the power board are coupled and an insect screen is formed around the circumferential surface; and a lower body detachably coupled to the upper body and configured with a board support on which the power board is seated.

According to one embodiment of the present invention, the dual smoke sensor includes a first light emitting diode generating and emitting an infrared wavelength band of 470 nm, a second light emitting diode generating and emitting an infrared wavelength band of 850 nm, and the first light emitting diode A first light-receiving diode for detecting light scattering of an infrared frequency emitted from the light emitting diode and transmitting the light scattering of an infrared frequency emitted from the second light emitting diode to the control means; characterized by

According to an embodiment of the present invention, the first and second light emitting diodes and the first and second light receiving diodes are arranged to form orthogonal intersections.

According to one embodiment of the present invention, the power board supports the sensor board to be spaced apart from both sides of the upper side, and is orthogonal to a separation panel in which a seating groove portion in which the control means is seated is formed, and the separation panel It is configured in the direction of forming, characterized in that the sensor board is seated and a coupling support block for supporting so that it can be combined with the upper body is further configured.

According to one embodiment of the present invention, the control means determines that the detected smoke is a smoke particle generated in a fire when the generated particle size information is generated with a diameter of 100 nm to 300 nm, and drives the LED and the speaker. characterized by control.

According to one embodiment of the present invention, the control means determines that the introduced smoke is dust or water vapor particles when the generated particle size information has a diameter of 10 μm or a particle size larger than the 100 nm to 300 nm diameter. It is characterized in that the driving of the LED is controlled by determining.

According to this embodiment of the present invention, by analyzing different wavelength bands of the measured light scattering to identify the particle size of different types of smoke, dust, and water vapor, the accuracy of distinguishing between fire smoke particles and dust or water vapor particles can be improved. There are possible effects.

In addition, according to an embodiment of the present invention, when outputting an analyzed smoke alarm, fire smoke, water vapor, dust, etc., are classified and output so that malfunctions in alarm output are made, thereby minimizing damage caused by false alarms. there is

In addition, the various beneficial advantages and effects of the present invention are not limited to the above description, and will be more easily understood in the process of describing specific embodiments of the present invention.

1 is a perspective view showing a dual optical smoke detection device according to an embodiment of the present invention;
2 is an exploded view showing a dual optical smoke detection device according to an embodiment of the present invention;
3 is a configuration diagram schematically showing the internal structure of the dual smoke sensor of the dual optical smoke detection device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, terms such as "comprise", "comprise" or "having" described below mean that the corresponding component may be inherent unless otherwise stated, excluding other components. All terms, including technical or scientific terms, are generally understood by those skilled in the art to which the present invention belongs, unless otherwise defined. have the same meaning as understood. Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected”, “coupled” or “connected” to another element, that element is or may be directly connected to the other element, but there is another element between the elements. It will be understood that elements may be “connected”, “coupled” or “connected”.

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

As shown, the dual optical smoke detection device of the present invention is embedded in the casing unit 100 to which the upper body 110 and the lower body 130 are detachably coupled and the casing unit 100, respectively. A dual smoke sensor 240 constituting a plurality of infrared light emitting diodes 242 emitting infrared rays of different wavelengths and a plurality of light receiving diodes 242 is installed to distinguish between fire smoke, water vapor, dust, and other malfunctions of alarm output, and output the output. It is configured to include a sensor assembly 200 configured to achieve this.

The upper body 110 is equipped with a sensor assembly 200 inside, is formed through one side of the upper body, and the LED 222 configured on the sensor board 220 of the sensor assembly 200 is seated to control means 250 A light emitting groove 114 through which light emitted is transmitted according to the control is formed, and is connected to a reset switch 226 configured in the sensor board 220 at a position opposite to the light emitting groove 114 and reset from the outside. A reset button 120 for activating the switch 226, the reset button 120 is mounted, and a button operating hole 112 guiding the lifting operation of the reset button 120 is formed.

In addition, the upper body 110 may be equipped with a speaker so that an alarm sound can be output to the central inner surface, and a coupling flange extending at equal intervals at the lower end and supporting the lower body 130 to be detachably coupled. 116 and a plurality of smoke inlet holes 118 along the circumferential surface to allow smoke to flow in the event of a fire.

The upper body 110 is configured such that the insect screen 150 can be disposed between the power board 210 and the sensor board 220 and the smoke inlet hole 118 when the sensor assembly 200 is mounted. Accordingly, it will be possible to prevent malfunctions caused by various kinds of bugs entering the sensor assembly 200 through the smoke inlet hole 118 during normal times.

The lower body 130 is detachably coupled to the lower part of the upper body 110, and along the upper circumferential surface, a body coupling groove 136 to which the coupling flange 116 is coupled is formed, and the body coupling groove 136 ) is formed at the bottom of

In addition, the lower body 130 is formed in an annular shape along its inner circumferential surface so that the power board 210 of the sensor assembly 200 is seated and at the same time the power supply unit 214 configured under the power board 210 is connected to the power cable. A board support 132 is configured to support the connection with the board.

The lower body 130 is detachably coupled to its lower end and seals the inside of the casing 100 so that the sensor assembly 200 is embedded in the casing 100, and the sensor assembly 200 The main body cover 140 is configured to support the mounted casing portion 100 so that construction can be made on the ceiling of a building.

At this time, the body cover 140 may be further configured with a fastening portion to which a fixing bolt or screw is fastened so that the power board 210 and the sensor board 220 can be more stably coupled to the upper body 110. .

The sensor assembly 200 includes a power board 210, a sensor board 220, a smoke chamber 230, a dual smoke sensor 240, and a control unit 250.

The lower surface of the power board 210 is seated on the board support 132 of the lower body 130, and a power supply unit 214 for receiving and transmitting power to the lower center is mounted.

In addition, the power board 210 is configured with a separation panel 212 supporting the sensor board 220 to be spaced apart on both sides of the upper part, and the main body cover 140 in a direction perpendicular to the separation panel 212 ) A coupling support block 216 is configured to support a fixing bolt fastened to, or a coupling means such as a screw to be coupled to the upper body 110 through a screw coupling method.

At this time, it is preferable that the coupling support block 216 is configured such that the lower surface of the sensor board 220 is seated together with the separation panel 212 .

In addition, the separation panel 212 may form a seating groove in which the control means 250 is seated, and thus, the control means 250 may be stably fixed.

The sensor board 220 is configured to be spaced apart from the upper part of the power board 210 by a predetermined distance, the control means 250 is mounted on the lower surface, and the control means 250 is connected to the central part on the upper surface, so that each different A dual smoke sensor 240 that transmits a wavelength band is installed.

In addition, the sensor board 220 has fixing grooves 224 formed on both sides of the dual smoke sensor 240 so that the smoke chamber 230 can be fixedly coupled.

In addition, the sensor board 220 is composed of LEDs 222 and a reset switch 226 in the front and rear of the dual smoke sensor 240, respectively, and the LEDs 222 and the reset switch 226 are the control means 250 ) and electrical connection is made.

The sensor board 220 enables electrical connection between the dual smoke sensor 240, the LED 222, the reset switch 226, and the control means 250, and transmits and receives sensing signals and control signals. It goes without saying that a sensing circuit is configured.

The smoke chamber 230 is coupled to the fixing groove 224 of the sensor board 220 and serves to protect the dual smoke sensor 240 from pests or large-sized dust, and particles of smoke, dust, water vapor, etc. It is a component that only flows in and is detected by the dual smoke sensor 240.

The smoke chamber 230 extends downward to the lower circumferential surface, and has a fixed flange inserted into and fixed to the fixing groove 224. A smoke through hole is formed so that detection is made by the smoke sensor 240 .

The dual smoke sensor 240 is composed of a plurality of light emitting diodes 242 and a plurality of light receiving diodes 244 having a corresponding number.

At this time, the plurality of light emitting diodes 242 and the plurality of light receiving diodes 244 are arranged in directions forming orthogonal to each other, so that infrared rays of different wavelengths emitted from the plurality of light emitting diodes 242 are emitted from the plurality of light receiving diodes 244 ) is configured to prevent direct incidence.

In addition, the plurality of light emitting diodes 242 are configured to emit infrared rays of different wavelength bands, and the plurality of light receiving diodes 244 detect the infrared rays of the different wavelength bands and transmit the infrared rays to the control means 250 .

The dual smoke sensor 240 may include first and second light emitting diodes 242a and 242b and first and second light receiving diodes 244a and 244b.

The first light emitting diode 242a generates and emits an infrared wavelength range of 470 nm, and the second light emitting diode 242b generates and emits an infrared wavelength range of 850 nm and is refracted by smoke flowing into the smoke chamber 230. As this is done, light scattering of infrared rays is made.

The first light-receiving diode 244a senses the light scattering of the infrared frequency emitted from the first light-emitting diode 242a and transmits the light scattering to the control means 250, and the second light-receiving diode 244b detects light scattering from the second light-emitting diode 242b. It is configured to detect the light scattering of the emitted infrared frequency and transmit it to the control means 250 to calculate the amount of change data for the light scattering of each different infrared frequency through the control means 250.

The control unit 250 analyzes light scattering information of different infrared wavelength bands transmitted from the first and second light receiving diodes 244a and 244b to calculate light amount change data for these infrared wavelength bands, and calculates light scattering change data. Analysis to generate smoke type information.

When the smoke type information is generated, the control unit 250 may further generate information on the particle size of the smoke introduced into the smoke chamber 230, and flow into the smoke chamber 230 based on the generated particle size information. Whether or not the LED 222 emits light is determined by determining whether the type of smoke generated is fire smoke, general dust, or water vapor, and whether or not an alarm sound is transmitted through the aforementioned speaker is controlled. It consists of

At this time, when the generated particle size information is generated with a diameter of 100 nm to 300 nm, the control means 250 determines that the smoke introduced into the smoke chamber 230 is a smoke particle generated in the event of a fire, and sets the LED 222 to a fire. While driving so that the corresponding light is emitted, control is performed so that an alarm sound is transmitted through a speaker.

In addition, the control means 250 determines whether the smoke introduced into the smoke chamber 230 is dust or water vapor when the generated particle size information is 10 μm in diameter or generated in a particle size larger than the 100 nm to 300 nm diameter. It is determined that it is configured to emit light corresponding to the safety signal through the LED (222).

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: casing part 110: upper body
112: button operation hole 114: light emitting groove
116: coupling flange 118: smoke inlet hole
120: reset button 130: lower body
132: board support 136: body coupling groove
140: main body cover 150: insect screen
200: sensor assembly 210: power board
212: separation panel 214: power supply unit
216: combined support block 220: sensor board
222: LED 224: fixed groove
226: reset switch 230: smoke chamber
240: dual smoke sensor 242: light emitting diode
244: light receiving diode 250: control means

Claims (5)

It is constituted in the upper central part, and is composed of dual smoke sensors that sense incoming smoke by emitting different wavelengths, respectively, and a sensor board composed of LEDs and reset switches at the front and rear of the dual smoke sensor, respectively;
a power board to which the sensor board is spaced apart and comprising a power supply unit connected to the control means;
Coupled to the lower surface of the sensor board, analyzing light scattering information of different infrared wavelength bands transmitted from the dual smoke sensor to calculate light amount change data, and analyzing the calculated light scattering change data to generate smoke type information, Control means for controlling the driving of the LED and the speaker;
An upper body in which the sensor board and the power board are coupled and an insect screen is formed around the circumferential surface; and
a lower body detachably coupled to the upper body and configured with a board support on which the power board is seated;
Dual optical smoke detection device comprising a.
According to claim 1,
The dual smoke sensor
A first light emitting diode generating and emitting an infrared wavelength band of 470 nm;
A second light emitting diode generating and emitting an infrared wavelength band of 850 nm;
a first light-receiving diode that detects light scattering of an infrared frequency emitted from the first light-emitting diode and transmits the light scattering to the control means;
a second light-receiving diode that senses light scattering of an infrared frequency emitted from the second light-emitting diode and transmits the light scattering to the control means;
The dual optical smoke detection device, characterized in that the first and second light emitting diodes and the first and second light receiving diodes are arranged to form an orthogonal intersection.
According to claim 1,
The power board,
A spaced panel supporting the sensor board to be spaced apart from each other on both sides of the upper part and having a seating groove portion in which the control means is seated;
A coupling support block configured in a direction orthogonal to the spacer panel and supporting the sensor board to be seated and coupled to the upper body.
Dual optical smoke detection device, characterized in that this is further configured.
According to claim 1,
The control means,
When the generated particle size information is generated with a diameter of 100 nm to 300 nm, the dual optical smoke detection device, characterized in that for controlling the driving of the LED and the speaker by determining that the detected smoke is a smoke particle generated during a fire.
According to claim 1,
The control means controls the driving of the LED by determining that the introduced smoke is dust or water vapor particles when the generated particle size information has a diameter of 10 μm or is generated with a particle size larger than the 100 nm to 300 nm diameter Dual optical smoke detector, characterized in that.

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