KR20100127362A - Photoelectric separated smoke detecting system having lager for controlling equilibrium of mirror - Google Patents

Abstract

PURPOSE: A photoelectric separated smoke detecting system having lager for controlling the equilibrium of a mirror is provided to make the balance of an infrared transmitting and receiving terminal and a reflection plate. CONSTITUTION: A reflector(810) reflects incident light. A smoke sensor(800) determines the generation of smoke by using the intensity of radiation which is reflected from the radiation plate. Two laser beams are radiated on the reflection plate to set the balance of the reflection plate.

Description

Photoelectric separated smoke detecting system having lager for controlling equilibrium of mirror

The present invention relates to a smoke detection system, and more particularly, to a photoelectric split smoke detection system that facilitates the balance adjustment of the reflector using a laser.

As a method for detecting a fire, a method of detecting smoke generated by a fire and determining whether a fire is mainly used. In the past, the smoke in the fire is mainly detected by using a sensing element capable of sensing the smoke itself, but recently, a smoke detection method using photoelectric has been widely used.

The photoelectric smoke detector uses light to detect smoke in a fire. The principle is briefly described. When light emitted from a light emitting device is delivered to a light receiving device, smoke enters the light receiving device. The principle of detecting the decrease in the amount of light is to detect smoke.

Photoelectric smoke detectors can be classified into a spot type and a separate type. The spot smoke detector is composed of a light emitting element and a light receiving element in the detector to operate when the air around the detector contains a certain concentration of smoke. Spot photoelectric smoke detectors are typically 9m wide and 9m long, embracing up to 81m ^{2 and} are mainly used in narrow spaces. On the other hand, the detachable smoke detector has a maximum sensing distance of about 100m, and thus is mainly used in a large space. In general, a light emitting part for emitting light and a light receiving part for collecting light are separated. In recent years, fires in large-scale critical facilities have raised the safety awareness of fires in large and large spaces, and the need for advanced fire alarm systems has emerged due to the recent increase in the size of buildings such as skyscrapers and improved fire safety. Photoelectric smoke detectors have been used as fire detection systems in such large spaces.

1 and 2 illustrate the basic operating principle of the photoelectric smoke detector, FIG. 1 illustrates the photosensitive sensing principle, and FIG. 2 illustrates the scattered light sensing principle.

1 and 2, the detector is composed of a light emitting unit and a light receiving unit, and is classified into photosensitive and scattered light. Scattered light detectors are commonly used in spot smoke detectors, and in principle, the principle of photosensitive is applied.

Referring to FIG. 1, as the smoke detection principle of the photosensitive detector, when the light 10 enters in the middle of the light emitted from the light emitting device 1 is transmitted to the light receiving device 3, the light incident device 3 is incident on the light receiving device 3. Smoke can be detected by the principle that the amount of light is reduced.

Referring to FIG. 2, the light receiving element 3 and the light emitting element 1 are positioned on different axes so that the light emitted from the light emitting element 1 is not transmitted to the light receiving element 3, but when smoke is introduced, The light reflected by the particles 10 is transmitted to the light receiving element 3, which is a principle of detecting smoke as the amount of light. Although there are advantages and disadvantages to the two principles, in general, the scattering light principle is applied in the spot type detector, where the risk of non-fire protection is relatively low.

3 is a view schematically showing the principle of the digital photoelectric split smoke detector. As shown in the figure, the photoelectric split type detector is provided with the light emitting unit 32 and the light receiving unit 34 separately installed, and an electric signal is transmitted to the light receiving unit 34 when the smoke occurs in the optical path axis connected to both sides. It is changed to detection method.

As described above, the length of the optical path axis is defined as 100m maximum in the domestic law, and the distance to the adjacent optical path axis is to be installed at intervals of 5m.

In the structure of the smoke detector according to FIG. 3, the positions of the light emitter 32 and the light receiver 34 are different from each other, and thus there is a problem in construction of power supply and other wiring. That is, since the light emitting unit 32 and the light receiving unit 34 are spaced apart from each other with a space for detecting smoke therebetween, a power supply and other wiring for each are required. As a countermeasure against this, a smoke detector capable of providing the light emitting part 32 and the light receiving part 34 at the same position using a reflector has been developed.

4 is a view schematically showing the configuration of a digital photoelectric separation type smoke detection system using a reflection plate, and FIG. 5 is a circuit diagram of the digital photoelectric separation type smoke detector using a reflection plate.

4 and 5 together, the digital photoelectric detachable smoke detection system includes a smoke detector 400 having a light emitting unit and a light receiving unit (TX / RX, 410) and a reflector spaced apart from each other with a space for smoke detection ( reflector 430). By installing the smoke detector 400 and a reflector 430 that can reflect light that does not require electrical wiring or other wiring on the opposite side of the region to detect smoke, it is possible to secure convenience and economical efficiency in construction. That is, the light emitted from the TX (light emitting unit) of the smoke detector 400 is reflected on the reflecting plate 430 of the opposite side is used to enter the RX (light receiving unit).

As shown in the figure, the smoke detector 400 includes an infrared transceiver (TX / RX, 410) and a controller 420, the controller 420 is the light emitted from the infrared transceiver 410 reflecting plate 430 ) Is used to determine whether smoke is generated using the amount of light reflected back.

To explain in more detail, first, the transmitter of the infrared transceiver 410 of the smoke detector 400 generates a modulated signal to amplify power, and then drives an infrared LED to convert the modulated infrared light into a lens or the like. Transmit remotely through optical devices. The reflector 430 reflects the received infrared rays again, and the receiving end (phototransistor) of the infrared transceiver 410 receives and amplifies them and filters only the reflected signals through demodulation. The demodulated signal is converted into a digital signal using an analog-to-digital converter (ADC) of a microcontroller unit (MCU), and the signal is analyzed by a digital signal processing technique. It measures the amount of cutoff and drives a relay for a fire alarm.

Here, one of the most important factors as a factor for more accurately detecting the smoke caused by the fire, the light emitted from the transmitting end of the infrared transceiver 410 is reflected on the reflector 430 to accurately receive to the receiving end of the infrared transceiver 410 It must be reached. If the reflector 430 is tilted or twisted, some or all of the light emitted from the transmitting end of the infrared transmitting and receiving unit 410 may not reach the receiving end and thus may not detect smoke generated in a fire. Therefore, it is important to balance the reflector plate 430 so that the light from the transmitting end can be reflected to the receiving end without any minute error.

As described above, since the optical photoelectric separation type smoke detection system is constructed in a large space within 100 m, the distance between the smoke detector 400 and the reflector 430 may be spaced up to 100 m, and thus the reflector plate ( The task of more accurately balancing the 430 becomes more important.

6 and 7 are front and side views illustrating setting the equilibrium of the reflecting plate using a conventional horizontal system.

6 and 7, the leveler 600 is used to balance the reflecting plate 430. When the horizontal system 600 is used, the reflector 430 itself, that is, the horizontal and vertical may be horizontally, but the reflector 430 or the mount 610 to which the reflector 430 is attached is precisely equilibrated with respect to tilting back and forth. Difficult to match If it is tilted back and forth, the light emitted from the infrared transceiver 410 is reflected by the reflecting plate 430 is not accurately entered again to the receiving end of the infrared transceiver 410.

Therefore, in order to balance the infrared transceiver 410 and the reflector 430, workers communicate with each other using a communication means such as a radio with each other in a state located near the infrared transceiver 410 and the reflector 430, respectively. I'm doing a manual balancing. As the manual work is not easy to control the fine movement of the reflector 430 or the infrared transceiver 410, it is difficult to balance more accurately.

Accordingly, the present invention has been made to solve the above problems, and to provide a photoelectric separation type smoke detection system that facilitates the balance control of the reflector using a laser.

In addition, the present invention is to provide a photoelectric separation type smoke detection system that automatically adjusts the balance of the infrared transceiver and the reflector using a laser.

Other objects of the present invention will become more apparent through the preferred embodiments described below.

According to an aspect of the invention, the photoelectric separation detection system for detecting smoke in a fire, comprising: a reflecting plate for reflecting incident light; And a smoke detector comprising a smoke detector configured to determine whether smoke is generated by using the amount of light incident upon the reflection of the light emitted by the reflector, and to emit two lasers to the reflector to set the equilibrium of the reflector. One photoelectric split smoke detection system is provided.

Here, the balance plate may be displayed on the reflection plate to be positioned each laser point according to the laser to set the balance.

In addition, the smoke detector, the infrared ray transmitting and receiving unit for emitting light to the reflector, the light reflected from the reflector; A controller for determining whether smoke is generated using the amount of light received from the reflector; And it may include a laser radiation unit for emitting the laser.

In addition, the reflector may be driven up, down, left, and right by a remote control.

The reflector may include a reflector made of a material for reflecting light; A laser point recognizing unit for recognizing a laser point incident on the reflecting unit; A driving unit for driving the reflector up, down, left and right; And a driving controller which controls the driving unit so that the laser point point recognized by the laser point recognition unit is located at a preset balance point.

The laser point recognition unit may recognize the laser point point from the image of the reflector.

The reflection plate may set the balance of the reflection unit by recognizing the laser point at every predetermined period.

According to the present invention, it is possible to balance the reflection plate while checking the laser light radiated from the infrared transceiver, and there is an effect of more conveniently balancing the infrared transceiver and the reflection plate.

In addition, according to the present invention, it is possible to automatically balance the reflection plate by automatically recognizing the position of the laser light emitted from the infrared transmitting and receiving end reflected on the reflection plate, it is convenient to balance the reflection plate even if the administrator does not perform additional work Can be.

In addition, according to the present invention, the balance of the reflector is automatically adjusted periodically, even if the administrator does not need to check separately, there is an effect that the balance between the reflector and the infrared transceiver.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in describing the present invention with reference to the accompanying drawings, the same or corresponding elements are denoted by the same reference numerals regardless of the reference numerals, and duplicates thereof. The description will be omitted.

8 is a schematic view of a photoelectric split smoke detection system having laser light emitting means for adjusting the balance of a reflector according to an embodiment of the present invention.

 Referring to FIG. 8, the smoke detection system according to the present embodiment includes a smoke detector 800 and a reflecting plate 810, and the smoke detector 800 includes a laser radiator 802, an infrared transceiver 804, and a controller. 806 and an alarm processing unit 808.

The infrared transceiver 804 of the smoke detector 800 emits infrared rays and receives light reflected by the reflector 810. The controller 806 may determine whether smoke is caused by a fire based on the amount of light flowing into the receiving end of the infrared transceiver 804. The control unit 806 controls the alarm processing unit 808 to issue a fire alarm when it is determined that smoke is occurring.

In particular, the smoke detector 800 according to the present exemplary embodiment includes a light source between the reflecting plate 810 and the infrared transmitting / receiving unit 804 so that the light emitted from the transmitting end of the infrared transmitting / receiving unit 804 is reflected to the reflecting plate 810 and accurately flows into the receiving end. And a laser radiation 802 for balancing. That is, the balance of the reflector 810 may be set such that the direction of the light reflected from the reflector 810 using the laser emitted from the laser radiator 802 is directed to the receiver of the infrared transceiver 804.

Hereinafter, a process of setting the equilibrium of the reflector 810 using the laser emitted from the laser radiator 802 of the smoke detector 800 will be described.

9 is a diagram illustrating a method of setting the balance of a reflector using a laser according to an embodiment of the present invention.

Referring to FIG. 9, the laser radiator 802 of the smoke detector 800 emits two lasers, and the emitted laser is incident on the reflector 810 as shown in the drawing, so that the laser is located at the corresponding spot. Colors 912 and 922 are indicated. For example, the laser may have a red color like a laser pointer commonly used. Hereinafter, for convenience of description, a red laser point is displayed on the reflective plate 810 as an example.

The reflector 810 includes a reflector 830 and a reflector holder 840 of a material capable of reflecting incident light. Substantially in equilibrium with the smoke detector 800 is the reflector 830, not the reflector itself 810. However, in the present specification, setting the balance of the reflector for convenience of description may be interpreted as setting the balance of the reflector 830.

As shown in the figure, the reflector 830 is marked with a scale 832 for balancing. Hereinafter, it will be referred to as "balance setting scale". Since there are two lasers emitted from the smoke detector 800, the reflector 830 shows two equilibrium scales 832.

When the mirror 830 is well balanced, each laser 922 is displayed on the balancing scale 832 as shown by reference numeral 920 of the mirror 830 as viewed from the front. On the contrary, if the reflector 830 is tilted back and forth or twisted from side to side, at least one laser is out of the equilibrium scale 832 as shown by reference numeral 910. Therefore, according to the present exemplary embodiment, the manager may move the reflector holder 840 or the reflector 830 itself while watching the laser beam displayed on the reflector 830, and more easily maintain the balance of the reflector 830.

As described above, the distance between the smoke detector 800 and the reflector 810 may be up to 100 m, and the distance is far enough that the laser displayed on the reflector 830 may move even if the reflector 810 is slightly moved. This direct balancing can be a subtle task.

Therefore, according to another exemplary embodiment, a mechanical adjusting device may be provided on the reflecting plate 810 to move the reflecting plate 810 more finely.

In one embodiment, the reflector holder 840 may be provided with mechanical means to move up, down, left and right by a remote control. Therefore, the manager may adjust the reflector holder 840 with a remote controller to balance the reflector 830 mounted or attached to the reflector holder 840. According to the present embodiment, finer adjustment may be performed by adjusting the balance of the reflector 810 by mechanical means.

FIG. 10 is a block diagram illustrating a reflector of a photoelectric split smoke detection system that automatically performs an equilibrium setting according to an embodiment of the present invention.

Referring to FIG. 10, the reflector 810 according to the present exemplary embodiment includes a reflector 1010, a laser point recognition unit 1020, a driver 1030, and a drive controller 1040.

The reflector 1010 is a means for reflecting light, such as infrared rays incident from the smoke detector, and the laser point recognition unit 1020 is each point where two lasers emitted from the smoke potato are incident on the reflector 1010. Function to recognize According to an embodiment, the laser point recognition unit 1020 may include a camera module to photograph the reflector 1010 and recognize a point where the laser is incident from the captured image. For example, the total area of the reflector 1010 may be divided by a predetermined number of coordinates, and the coordinates of the corresponding point may be calculated by recognizing a specific color (for example, red) displayed at the point where the laser is incident. . Since the image recognition technology is well known, it will be apparent to those skilled in the art, and thus a detailed description thereof will be omitted.

The driver 1030 is a means for driving the reflector 1010 or the reflector holder (not shown) up, down, left, and right, and may include, for example, a motor.

The driving controller 1040 determines whether the point where the laser is recognized by the laser point recognition unit 1020 is a preset point (hereinafter referred to as the “balance point”), and the point where the laser is incident is placed on the equilibrium point. The driving unit 1030 is controlled to be positioned. For convenience of understanding, for example, when the laser point is located at the right side of the equilibrium point, the reflection part 1010 is recognized as being inclined to the left, and the driving control unit 1040 slightly reflects the reflection part 1010 to the right. The driving unit 1030 is controlled to tilt.

Therefore, according to the present embodiment, by automatically performing the balance setting of the reflector plate 810 requiring fine work, a more accurate balance can be set than a person balances directly.

In addition, since the balance of the reflector 810 may be distorted as time passes, it is necessary to periodically check the equilibrium state of the reflector 810. The photoelectric detachable smoke detection system that automatically balances the reflector 810 according to the present embodiment may periodically check whether the reflector 810 maintains an equilibrium state, and set and maintain an equilibrium state. For example, the smoke detector 800 may always emit a laser, and may be in equilibrium by recognizing a point of the laser at which the reflector 810 is periodically incident. Alternatively, the reflector 810 and the smoke detector 800 interlock with each other, and the smoke detector 800 emits a laser to the reflector 810 every predetermined time interval (for example, 24 hours), and the reflector 810 is incident. Equilibrium of the reflector 1010 may be set using the laser, and conversely, the smoke detector 800 may emit the laser at the request of the reflector 810.

Therefore, it is not necessary for the administrator to check the equilibrium state of the reflector 810 separately from time to time, thereby providing convenience of management.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

1 and 2 show the basic operating principle of the photoelectric smoke detector.

3 schematically illustrates the principle of a digital photoelectric split smoke detector;

4 is a view schematically showing the configuration of a digital photoelectric split smoke detection system using a reflector.

5 is a circuit diagram of a digital photoelectric detachable smoke detector using a reflector.

6 and 7 are front and side views illustrating setting the balance of the reflector using a conventional horizontal system.

8 is a schematic view of a photoelectric split smoke detection system having laser light emitting means for balancing the reflector according to one embodiment of the present invention;

9 is a diagram illustrating a method of setting the balance of the reflector using a laser according to an embodiment of the present invention.

10 is a block diagram illustrating a reflector of a photoelectric split smoke detection system that automatically performs an equilibrium setting in accordance with one embodiment of the present invention.

Claims (7)

In the photoelectric separation detection system for detecting smoke in a fire, A reflector reflecting incident light; And It is provided with a laser light emitting means comprising a smoke detector that emits two lasers to the reflecting plate to determine whether smoke is generated by using the amount of light incident by the light reflected by the reflecting plate is reflected Photoelectric Detachable Smoke Detection System. The method of claim 1, The reflector plate is a separate photoelectric smoke detection system having a laser light emitting means, characterized in that the equilibrium scale to which each laser point according to the laser is to be positioned for the equilibrium setting. The method of claim 1, wherein the smoke detector, An infrared ray transceiver for emitting light to the reflector and receiving light reflected from the reflector; A controller for determining whether smoke is generated using the amount of light received from the reflector; And And a laser radiating portion for emitting the laser. The method of claim 1, The reflective plate is separated photoelectric smoke detection system having a laser light emitting means characterized in that driven by the remote control. The method of claim 1, wherein the reflecting plate, A reflector made of a material for reflecting light; A laser point recognizing unit for recognizing a laser point incident on the reflecting unit; A driving unit for driving the reflector up, down, left and right; And And a driving control unit for controlling the driving unit so that the laser point point recognized by the laser point recognizing unit is located at a preset equilibrium point. The method of claim 5, And the laser point recognition unit recognizes the laser point point from the image of the reflecting unit. The method of claim 5, And the reflector is configured to set the balance of the reflector by recognizing the point of the laser point at predetermined intervals.

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