WO2014098317A1 - Elevator surveillance system and method for adjusting focus of transmitted light thereof - Google Patents

Elevator surveillance system and method for adjusting focus of transmitted light thereof Download PDF

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Publication number
WO2014098317A1
WO2014098317A1 PCT/KR2013/001367 KR2013001367W WO2014098317A1 WO 2014098317 A1 WO2014098317 A1 WO 2014098317A1 KR 2013001367 W KR2013001367 W KR 2013001367W WO 2014098317 A1 WO2014098317 A1 WO 2014098317A1
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WO
WIPO (PCT)
Prior art keywords
focus
optical signal
bolt
light
visible band
Prior art date
Application number
PCT/KR2013/001367
Other languages
French (fr)
Korean (ko)
Inventor
이안국
Original Assignee
(주)와이솔
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Filing date
Publication date
Application filed by (주)와이솔 filed Critical (주)와이솔
Publication of WO2014098317A1 publication Critical patent/WO2014098317A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1141—One-way transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0037—Performance analysers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source

Definitions

  • the present invention provides an elevator monitoring system that adjusts the focus of an optical signal transmitted from a light emitting unit to a light receiving unit by using an optical signal in a visible band, and transmits a surveillance image photographed inside an elevator as an optical signal in an invisible band, and its
  • the present invention relates to a transmission optical focusing method.
  • elevators installed in high-rise apartments or buildings are equipped with surveillance cameras such as CCTV for security and safety issues.
  • the surveillance camera is installed at a specific location inside the elevator, and transmits the surveillance image to the guard room or the central control room through the coaxial cable.
  • the coaxial cable has a problem that is damaged or broken by the operation of the elevator.
  • An object of the present invention for solving the above problems is to adjust the focus of the optical signal transmitted from the light emitting unit to the light receiving unit by using an optical signal of the visible band, and to monitor the image captured inside the elevator optical signal of the invisible band
  • An elevator monitoring system and a method for adjusting the optical focus of the transmission are provided.
  • the first light emitting unit for emitting an optical signal of the visible band and invisible
  • An optical transmitter having a second light emitting unit for emitting an optical signal of a band; Fixing stand for fixing the optical transmitter; One or more adjustment bolts inserted into each corner of the holder to fix the optical transmitter and adjust focus of the visible band optical signal emitted from the first light emitting unit; And an optical receiver configured to receive the optical signal in the visible band or the optical signal in the invisible band.
  • the light transmitting portion and the holder is formed in each corner corresponding to each other, the insertion port is screwed to the insertion hole is fixed to the optical transmission unit is fixed to the holder.
  • the adjustment bolt includes an upper bolt for adjusting the focus of the visible light signal up, down, left, right, and the lower bolt, left bolt and right bolt.
  • the focus of the visible band optical signal is adjusted to the left side, and when the left bolt is drawn out of the insertion hole, the focal point of the visible band optical signal is adjusted to the right side.
  • the focus of the visible band optical signal is adjusted to the right side, and when the right bolt is drawn out of the insertion hole, the focal point of the visible band optical signal is adjusted to the left side.
  • the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted downward.
  • the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted upward.
  • a strong magnet is provided at the lower end of the stator, and the optical transmitter is fixed to the fixing bracket by the magnetic force of the strong magnet.
  • the optical transmission unit having a first light emitting portion for emitting a visible band optical signal and a second light emitting portion for emitting an invisible band optical signal bolt for adjustment
  • step (c) when the left bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the left side, and when the left bolt is drawn out of the insertion hole, the focus of the visible band optical signal is right. Is adjusted.
  • step (c) when the right bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the right, and when the right bolt is drawn out of the insertion hole, the focus of the visible band optical signal is left. Is adjusted.
  • step (c) when the upper bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is lowered. Is adjusted.
  • step (c) when the lower bolt of the adjustment bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is upward. Is adjusted.
  • the surveillance image photographing the interior of the elevator is transmitted as an optical signal in the invisible band, the cable is not damaged or broken when the elevator is raised or lowered, and the surveillance image can be transmitted stably. .
  • the initial installation cost is not excessively high, and the cost of maintaining the wired line is not high.
  • the focus of the optical signal can be easily adjusted.
  • FIG. 1 is a configuration diagram schematically showing the configuration of an elevator monitoring system according to an embodiment of the present invention.
  • FIG. 2 is a view showing the components of the optical transmitter and the optical receiver according to an embodiment of the present invention.
  • FIG. 3 is a block diagram showing a functional block of an optical transmitter according to an exemplary embodiment of the present invention.
  • FIG. 4 is a block diagram showing a functional block of an optical receiver according to an embodiment of the present invention.
  • FIG. 5 is a view showing the structure of the light emitting unit and the light receiving unit according to the embodiment of the present invention.
  • FIG. 6 is a block diagram showing the main structure of the optical transmitter for controlling the light emitting unit according to an embodiment of the present invention.
  • FIG. 7 is a view showing the light emitting angle of the light emitting unit and the light receiving angle of the light receiving unit according to the embodiment of the present invention.
  • FIG. 8 is a view showing a cross-sectional structure of the optical transmitter according to an embodiment of the present invention.
  • FIG. 9 is a view showing an example of the adjustment bolt for adjusting the focus of the visible band optical signal according to an embodiment of the present invention.
  • FIG. 10 is a diagram illustrating an example in which a focus of a visible light signal is adjusted by an adjusting bolt according to an exemplary embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating an operation of adjusting a transmission optical focus of an elevator monitoring system according to an exemplary embodiment of the present invention.
  • FIG. 12 is a view showing an example in which the optical transmitting unit and the optical receiving unit is fixed with a strong magnet according to an embodiment of the present invention.
  • FIG. 13 is a view showing an example in which an outer cover is installed with a transparent acrylic light transmitting unit and a light receiving unit according to an embodiment of the present invention.
  • FIG. 14 is a view showing an example in which an optical receiver collects and receives an optical signal by a material reflecting light according to an exemplary embodiment of the present invention.
  • FIG. 1 is a configuration diagram schematically showing the configuration of an elevator monitoring system according to an embodiment of the present invention.
  • an elevator monitoring system includes an elevator 100, an image processing unit 110, an optical transmitter 120, an optical receiver 130, a terminal unit 140, and a monitoring computer 150. do.
  • the elevator 100 is a device that burns people and moves up or down, the image processing unit 110 acquires a surveillance image by photographing the interior of the elevator, and the optical transmitter 120 converts the obtained surveillance image into an optical signal.
  • the optical receiver 130 receives the optical signal and restores the original surveillance image, and the surveillance computer 150 stores or displays the surveillance image.
  • the image processor 110 converts the surveillance image photographed by the surveillance camera 200 such as a closed circuit TV (CCTV) into a digital signal and transmits the digital signal to the optical transmitter 120.
  • CCTV closed circuit TV
  • the optical transmitter 120 transmits the digital signal of the surveillance image received from the image processor 110 to the optical receiver 230 as an infrared optical signal.
  • optical communication is used as an image transmission method between the optical transmitter 120 and the optical receiver 130.
  • Optical communication converts information into optical signals and transmits them.
  • the transmitting side converts audio, video and data into electric signals and transmits them as optical signals.
  • the receiving side receives the optical signal, converts it into an electrical signal, and restores the original audio, video, and data.
  • the surveillance image is transmitted using infrared rays, a laser, or an LED as an optical signal.
  • the laser has a strong directivity, so there is no band interference and it is stable for data transmission.
  • the optical receiver 130 receives the optical signal, restores the optical signal to digital image data, and transmits the optical signal to the monitoring computer 150.
  • the terminal unit 140 may be provided between the light receiving unit 130 and the monitoring computer 150.
  • the monitoring computer 150 is usually provided in a central control room (not shown). When the central control room is far from the elevator 100, a loss occurs in the transmitted optical signal, so that the terminal unit 140 is provided between the monitoring computer 150 and the light receiving unit 130, and the optical signal is transmitted through the terminal unit 140.
  • the terminal unit 140 may include an amplifier circuit that complements the optical signal.
  • the surveillance computer 150 stores the surveillance image or displays it on the screen. That is, the surveillance computer 150 includes a storage device such as a digital video recorder (DVR), a hard disk drive, or a film tape that stores the surveillance image.
  • the monitoring computer 150 also includes a display device such as a monitor.
  • FIG. 2 is a view showing the components of the optical transmitter and the optical receiver according to an embodiment of the present invention.
  • the surveillance camera 200 installed in the elevator 100 transmits the captured surveillance image to the image processing unit 110, and the image processing unit 110 converts the surveillance image into image data to transmit an optical transmitter 120.
  • the optical transmitter 120 converts image data into an optical signal of infrared light, LED light, or laser light and transmits the same.
  • the optical receiver 130 is installed to correspond to the optical transmitter 120, receives the optical signal transmitted from the optical transmitter 120, converts the optical signal into image data, and monitors the computer 150 through the terminal unit 140. To be sent).
  • FIG. 3 is a block diagram showing a functional block of an optical transmitter according to an exemplary embodiment of the present invention.
  • an optical transmitter 120 includes a signal input unit 300, a signal detector 302, a display unit 304, a signal converter 306, a light emitter 308, and a power supply unit. 310.
  • the signal input unit 300 receives a surveillance image transmitted from the surveillance camera 200 and transmits the surveillance image to the signal converter 306 and the signal detector 302.
  • the signal detector 302 detects whether the video signal transmitted from the signal input unit 300 is normally received and transmits it to the display unit 304.
  • the display unit 304 includes, for example, a light emitting diode (LED), and emits a green LED when an image signal is normally input, and emits and displays a red LED when the image signal is not input. Therefore, the user can check whether the image signal is normally input by looking at the light emission color of the LED.
  • LED light emitting diode
  • the signal converter 306 converts the video signal transmitted from the signal input unit 300 into frequency components. Usually, 10 MHz to 100 MHz may be used as the frequency band, without being limited thereto, a frequency band of 1 Hz or more or a frequency band of 1 Hz or more may be used.
  • the light emitter 308 converts the frequency signal converted by the signal converter 306 into an optical signal.
  • the embodiment of the present invention uses the LED light, laser light or infrared light as the optical signal. Therefore, the light emitter 308 may transmit data by adjusting the intensity of the laser beam using, for example, a laser diode.
  • an optical unit may be configured to have an optical signal having a predetermined intensity and a predetermined angle.
  • a lens is configured in the optical unit, and the lens may use a convex lens that can collect light.
  • the power supply unit 310 supplies power to each component. That is, the external AC power supply (about 220V) is converted into DC power supply 12V and supplied.
  • the downtransmission method may be applied to increase the signal quality, and separate power is provided for each component in order to minimize mutual signal interference between components. And a portable battery can be used without using an AC power supply.
  • FIG. 4 is a block diagram showing a functional block of an optical receiver according to an embodiment of the present invention.
  • the light receiver 130 includes a power supply unit 440, a light receiving unit 450, a voltage boosting unit 452, a reference frequency generator 454, and a frequency converter 456. ), A frequency detector 458, a voltage converter 460, and a filter 462.
  • the power supply unit 440 supplies power required for the operation of the light receiver.
  • the light receiver 450 receives a visible band optical signal or an invisible band optical signal and transmits the same to the frequency converter 456. That is, the light receiver 450 receives a laser light signal, an LED light signal, or an infrared light signal transmitted from the light emitter 408, and a photo detector is configured for this purpose.
  • the light receiver 450 may configure a high performance POST amplifier that detects a minute signal in order to receive a laser beam transmitted from the laser diode of the light emitter 408.
  • the power supply unit 440 is configured to provide a boosted voltage to the POST Amplifier.
  • the power supply unit 440 converts an external AC power (about 220V) into a DC power supply DC of 12V in the same manner as the power supply unit 310 of the optical transmitter 120 described above.
  • the voltage boosting unit 452 boosts the voltage necessary to detect the optical signal and supplies the voltage to the light receiving unit 450.
  • the voltage supplied from the power supply unit 440 to the light receiving unit 450 is DC 5V, but the voltage is boosted to about DC 70V to 100V.
  • the frequency converter 456 amplifies the minute optical signal and converts it into an electrical signal to generate a frequency component.
  • the reference frequency generator 454 generates a reference frequency required to recover the original signal.
  • the frequency detector 458 compares the frequency transmitted from the frequency converter 456 with the reference frequency generated by the reference frequency generator 454 and generates a difference as an electric pulse signal.
  • the voltage converter 460 converts the pulse signal generated by the frequency detector 458 into a voltage signal.
  • the filter unit 462 removes unnecessary noise components to restore the original video signal. That is, the final video signal reconstructed by removing the noise component is transmitted.
  • the light receiving unit 130 may receive the surveillance image photographing the interior of the elevator as an infrared signal invisible to people and transmit it to the surveillance computer 150 in real time.
  • FIG. 5 is a view showing the structure of the light emitting unit and the light receiving unit according to the embodiment of the present invention.
  • the light emitting unit 308 As shown in FIG. 5, the light emitting unit 308 according to an exemplary embodiment of the present invention generates a first light emitting unit 510 including a visible light source body for generating a visible light signal, and an invisible band optical signal. And a second light emitting part 520 having an invisible light source body.
  • the first light emitting unit 510 emits a visible band optical signal for checking whether the optical signal transmitted from the optical transmitter 120 in the elevator monitoring system is correctly transmitted to the optical receiver 130, that is, LED light or laser light for optical focus adjustment.
  • the light is transmitted to the light receiving unit 450.
  • the second light emitter 520 may provide a ratio for transferring the optical signal from the optical transmitter 120 to the optical receiver 130.
  • the time-domain optical signal that is, infrared light, is emitted and transmitted to the light receiver 450.
  • the surveillance image captured by the surveillance camera 200 inside the elevator is invisible from the light transmitter 120 to the light receiver 130.
  • the infrared light of the band people can use the elevator with confidence as it becomes invisible to people using the elevator.
  • FIG. 13 is a view showing an example in which an outer cover is installed with a transparent acrylic light transmitting unit and a light receiving unit according to an embodiment of the present invention.
  • the light receiving unit 130 includes a material capable of reflecting light, for example, an aluminum foil, so that the optical signal transmitted from the light transmitting unit 120 may be transferred by the aluminum foil.
  • FIG. 6 is a block diagram showing the main structure of the optical transmitter for controlling the light emitting unit according to an embodiment of the present invention.
  • the optical transmitter 120 includes all the components shown in FIG. 3, and performs light emission operations of the first light emitter 510 and the second light emitter 520.
  • the controller 610 may further include a control unit 610 for inputting a control command for inputting a focus control command of an optical signal or a monitoring command for executing a monitoring operation.
  • the controller 610 operates the first light emitting unit 510 when a focus adjustment command is input from the manipulation unit 620 according to a user's manipulation. Therefore, the LED light or laser light in the visible band is emitted from the first light emitting unit 510.
  • the user adjusts the focus of the optical signal while watching the LED light or the laser light in the visible band transmitted from the first light emitter 510 to the photoreceiver 130.
  • the controller 610 operates the second light emitting unit 520 when a monitoring command is input from the operation unit 620 according to a user's operation. Therefore, the infrared light of the invisible band is emitted from the second light emitting unit 520.
  • the surveillance image photographing the interior of the elevator is transmitted from the optical transmitter 120 to the optical receiver 130 as an infrared signal, it is transmitted invisibly to people.
  • FIG. 7 is a view showing the light emitting angle of the light emitting unit and the light receiving angle of the light receiving unit according to the embodiment of the present invention.
  • the light emitter 308 includes the components illustrated in FIG. 3, and includes a second light emitter 520 that emits infrared light in the invisible band and infrared light in the invisible band. It includes a light emitting lens 710 for maintaining the light at a predetermined angle and a constant intensity.
  • the light emitting unit 308 also includes a first light emitting unit 510, but for convenience of description, the second light emitting unit 520 will be described as an example.
  • the light receiving unit 450 includes the components shown in FIG. 4, and includes a light receiving lens 720 and a light receiving area 730 that receive infrared light in an invisible band. In this case, the light receiving lens 720 and the light receiving area 730 also receive LED light or laser light in a visible band.
  • the light emitting lens 710 and the light receiving lens 720 are configured as convex lenses to prevent the optical signal from being scattered.
  • optical signals have an angle of radiation, usually radiating in a fan shape.
  • the light emitting lenses of the convex lens and the light receiving lenses 710 and 720 are provided in both the light emitting unit 308 and the light receiving unit 450. Since the block lens collects the incident light inward, the optical signal is transmitted from the light emitter 308 to the light receiver 450 while maintaining a predetermined angle and a predetermined intensity.
  • the light emitting unit 308 and the light receiving unit 450 may be adjusted in height with a screw structure. That is, when the cap is coupled to the body of the light emitting unit 308 or the light receiving unit 450 and turned clockwise, the cap moves upward and the height increases. In contrast, turning counterclockwise decreases the height as the cap moves inward.
  • the intensity of the optical signal can be adjusted by changing the refractive angle of the transmitted optical signal.
  • FIG. 8 is a view showing a cross-sectional structure of the optical transmitter according to an embodiment of the present invention.
  • the optical transmitter 120 includes a first light emitting unit 510 for generating a visible band optical signal and a second light emitting unit for generating an invisible band optical signal.
  • Light transmitting unit 120 having a (520); Fixture 810 for fixing the optical transmitter 120; It is inserted into each corner of the holder 810 to fix the optical transmitter 120, and includes an adjustment bolt 820 for adjusting the focus of the visible light signal generated from the first light emitting unit 510.
  • the optical transmitter 120 and the holder 810 is formed in each corner so as to correspond to each other, the insertion hole 830 is formed, the adjustment bolt 820 is screwed to the insertion hole 830, the optical transmitter 120 is fixed ( 810 is fixed.
  • the optical transmitter 1220 when the optical transmitter 120 is installed outside the bottom of the elevator 100 as shown in FIG. 12, the optical transmitter 1220 includes a strong magnet 1220 at a lower end of the fixing stand 810, and thus, the magnetic force of the strong magnet 1220. It can be fixed to the fixing bracket 1210 by. 12 is a view showing an example in which the optical transmitting unit and the optical receiving unit is fixed with a strong magnet according to an embodiment of the present invention.
  • the light receiving unit 130 may also be provided with a strong magnet 1220 at a lower end thereof, and may be fixed to the fixing bracket 1210 by the magnetic force of the strong magnet 1220.
  • adjustment bolt 810 the left bolts (822, 824) for adjusting the focus of the visible band optical signal to the left, as shown in Figure 9, and the right for adjusting the focus of the visible band optical signal to the right
  • Bolts 826 and 828 upper bolts 822 and 826 for adjusting the focus of the visible band optical signal upward and lower bolts 824 and 828 for adjusting the focus of the visible band optical signal downward.
  • 9 is a view showing an example of the adjustment bolt for adjusting the focus of the visible band optical signal according to an embodiment of the present invention.
  • FIG. 10 is a diagram illustrating an example in which a focus of a visible light signal is adjusted by an adjusting bolt according to an exemplary embodiment of the present invention.
  • the right side bolts 826 and 828 are inserted in a clockwise direction, the right side bolts 826 and 828 are inserted to press the right side of the first light emitting unit 510, and thus the first light emitting unit 510 is moved to the right. Tilt to adjust the focus of the visible band optical signal to the right.
  • the left bolts 822 and 824 are drawn out in a counterclockwise direction, the left side of the first light emitting part 510 held by the left bolts 822 and 824 is released and tilted to the right to focus the visible light signal. Is adjusted to the right, and when the right bolts 826 and 828 are pulled out counterclockwise, the focus of the visible band optical signal is adjusted to the left.
  • the focus of the visible band optical signal is adjusted downward, and when the lower bolts 824 and 828 are drawn out in a counterclockwise direction, the visible band optical signal is taken out. The focus is adjusted upward.
  • FIG. 11 is a flowchart illustrating an operation of adjusting a transmission optical focus of an elevator monitoring system according to an exemplary embodiment of the present invention.
  • the first light emission unit of the light emission unit 308 may be used.
  • Operation 510 (S1120). Therefore, the LED light signal or the laser light signal in the visible band is generated from the first light emitting unit 510 and transmitted to the light receiving unit 450.
  • the focus of the visible band LED light signal or the laser light signal transmitted from the light emitting unit 308 to the light receiving unit 450 is adjusted by the adjustment bolt 820 according to the user's operation. That is, the adjustment bolt 820 is turned clockwise or counterclockwise to adjust the focus of the visible band optical signal (S1130).
  • the left bolts 822, 824 are inserted to adjust the focus of the visible light signal to the left, or the right bolts 826 and 828 are inserted to adjust the focus of the visible light signal to the right, or the upper bolt 822, 826 are inserted to adjust the focus of the visible light signal upward, or lower bolts 824, 828 are inserted to adjust the focus of the visible light optical signal downward.
  • the controller 610 ends the operation of the first light emitting unit 510 (S1150). Therefore, the LED light signal or the laser light signal in the visible band is not generated from the first light emitting part 510.
  • an invisible band optical signal that is, an infrared optical signal, is generated from the second light emitting unit 520 and transmitted from the light emitting unit 308 to the light receiving unit 450.
  • the elevator since the surveillance image photographed by the surveillance camera 200 inside the elevator is transmitted to the light receiver 450 as an invisible invisible infrared signal from the light emitter 308, the elevator is used by the elevator or outside.
  • the infrared signal is not visible to the viewer's eyes, so people can use the elevator without worry.
  • the focus of the optical signal transmitted from the light emitting unit to the light receiving unit is adjusted using an optical signal in the visible band, and the surveillance image photographing the interior of the elevator can be transmitted as an optical signal in the invisible band.
  • One elevator monitoring system and its transmission optical focus adjustment method can be realized.
  • the present invention transmits a surveillance image of the interior of the elevator as an optical signal in the invisible band, and the elevator monitoring system and the transmission light for adjusting the focus of the optical signal transmitted from the light emitting unit to the light receiving unit using the optical signal of the visible band Applicable to the focus adjustment method.

Abstract

The present invention relates to an elevator surveillance system and a method for adjusting the focus of transmitted light thereof, the system being capable of adjusting the focus of light signals transmitted from a light emitter to a light receiver by using visible band light signals and capable of transmitting, as invisible band light signals, surveillance images captured of the inside of an elevator. The elevator surveillance system according to the present invention comprises: a light-transmitting unit comprising a first light emitter for emitting visible band light signals and a second emitter for emitting invisible band light signals; a fixing implement for fixing the light-transmitting unit; adjustment bolts for fixing the light-transmitting unit by being inserted into the respective corners of the fixing implement and for adjusting the focus of the visible band light signals emitted from the first light emitter; and a light-receiving unit for receiving the visible band light signals or receiving the invisible band light signals.

Description

엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법Elevator surveillance system and its transmission optical focusing method
본 발명은 발광부에서 수광부로 전송되는 광신호의 초점을 가시대역의 광신호를 이용해 조절하고, 엘리베이터의 내부를 촬영한 감시영상을 비가시 대역의 광신호로 전송할 수 있도록 한 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법에 관한 것이다.The present invention provides an elevator monitoring system that adjusts the focus of an optical signal transmitted from a light emitting unit to a light receiving unit by using an optical signal in a visible band, and transmits a surveillance image photographed inside an elevator as an optical signal in an invisible band, and its The present invention relates to a transmission optical focusing method.
일반적으로 고층 아파트나 빌딩에 설치된 엘리베이터에는 보안 및 안전의 문제로 CCTV와 같은 감시 카메라가 설치된다.In general, elevators installed in high-rise apartments or buildings are equipped with surveillance cameras such as CCTV for security and safety issues.
이때, 감시 카메라는 엘리베이터 내부의 특정 위치에 설치되고, 감시영상을 동축 케이블을 통해 경비실이나 중앙 통제실로 전송한다.At this time, the surveillance camera is installed at a specific location inside the elevator, and transmits the surveillance image to the guard room or the central control room through the coaxial cable.
그런데, 동축 케이블은 엘리베이터의 운행에 의해 훼손되거나 끊어지는 문제점이 있었다.However, the coaxial cable has a problem that is damaged or broken by the operation of the elevator.
또한, 엘리베이터가 고층까지 올라갈 때 노이즈(noise)에 의해 선명한 영상을 전송하지 못하는 문제점이 있고, 초기설치 비용이 과다하게 소요될 뿐만 아니라 배선된 선로를 유지 보수하기 위해서도 많은 비용이 소요되는 문제점이 있었다.In addition, there is a problem in that it is not possible to transmit a clear image due to noise (noise) when the elevator goes up to a high floor, there is a problem that not only takes excessive initial installation cost but also costs a lot to maintain a wired line.
전술한 문제점을 해결하기 위한 본 발명의 목적은, 발광부에서 수광부로 전송되는 광신호의 초점을 가시대역의 광신호를 이용해 조절하고, 엘리베이터의 내부를 촬영한 감시영상을 비가시 대역의 광신호로 전송할 수 있도록 한 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법을 제공함에 있다.An object of the present invention for solving the above problems is to adjust the focus of the optical signal transmitted from the light emitting unit to the light receiving unit by using an optical signal of the visible band, and to monitor the image captured inside the elevator optical signal of the invisible band An elevator monitoring system and a method for adjusting the optical focus of the transmission are provided.
전술한 목적을 달성하기 위한 본 발명의 일 측면에 따르면, 엘리베이터의 내부를 촬영한 감시 영상을 광신호로 전송하는 엘리베이터 감시 시스템에 있어서, 가시 대역의 광신호를 발광하는 제1 발광부와 비가시 대역의 광신호를 발광하는 제2 발광부를 구비하는 광송신부; 상기 광송신부를 고정시키는 고정대; 상기 고정대의 각 모서리에 삽입되어 상기 광송신부를 고정시키며, 상기 제1 발광부로부터 발광된 가시대역 광신호의 초점을 조절하기 위한 하나 이상의 조절용 볼트; 및 상기 가시대역의 광신호를 수신하거나 상기 비가시 대역의 광신호를 수신하는 광수신부를 포함하는 엘리베이터 감시 시스템이 제공된다.According to an aspect of the present invention for achieving the above object, in the elevator monitoring system for transmitting a surveillance image photographing the interior of the elevator as an optical signal, the first light emitting unit for emitting an optical signal of the visible band and invisible An optical transmitter having a second light emitting unit for emitting an optical signal of a band; Fixing stand for fixing the optical transmitter; One or more adjustment bolts inserted into each corner of the holder to fix the optical transmitter and adjust focus of the visible band optical signal emitted from the first light emitting unit; And an optical receiver configured to receive the optical signal in the visible band or the optical signal in the invisible band.
또한, 상기 광송신부와 상기 고정대는 서로 대응되게 각 모서리에 삽입구가 형성되고, 상기 조절용 볼트가 상기 삽입구에 나사 결합되면 상기 광송신부가 상기 고정대에 고정된다.In addition, the light transmitting portion and the holder is formed in each corner corresponding to each other, the insertion port is screwed to the insertion hole is fixed to the optical transmission unit is fixed to the holder.
또한, 상기 조절용 볼트는 상기 가시대역 광신호의 초점을 상, 하, 좌, 우로 조절하기 위한 상측 볼트와, 하측 볼트, 좌측 볼트 및 우측 볼트를 포함한다.In addition, the adjustment bolt includes an upper bolt for adjusting the focus of the visible light signal up, down, left, right, and the lower bolt, left bolt and right bolt.
또한, 상기 좌측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 좌측으로 조절되고, 상기 좌측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 우측으로 조절된다.In addition, when the left bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the left side, and when the left bolt is drawn out of the insertion hole, the focal point of the visible band optical signal is adjusted to the right side.
또한, 상기 우측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 우측으로 조절되고, 상기 우측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 좌측으로 조절된다.In addition, when the right bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the right side, and when the right bolt is drawn out of the insertion hole, the focal point of the visible band optical signal is adjusted to the left side.
또한, 상기 상측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 상측으로 조절되고, 상기 상측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 하측으로 조절된다.In addition, when the upper bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted downward.
또한, 상기 하측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 하측으로 조절되고, 상기 하측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 상측으로 조절된다.In addition, when the lower bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted upward.
그리고, 상기 고정대의 하단부에 강력 자석이 구비되고, 상기 광송신부가 상기 강력 자석의 자력에 의해 고정 브라켓에 고정된다.A strong magnet is provided at the lower end of the stator, and the optical transmitter is fixed to the fixing bracket by the magnetic force of the strong magnet.
한편, 전술한 목적을 달성하기 위한 본 발명의 다른 측면에 따르면, 가시대역 광신호를 발광하는 제1 발광부와 비가시대역 광신호를 발광하는 제2 발광부를 구비하는 광송신부가 고정대에 조절용 볼트에 의해 고정되고, 상기 광신호를 수신하는 수광부, 조작부 및 제어부를 포함하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법으로서, (a) 상기 조작부로부터 상기 광신호의 초점조절 명령이 상기 제어부에 입력되는 단계; (b) 상기 제어부가 상기 제1 발광부를 작동시킴에 따라 상기 제1 발광부로부터 가시대역 광신호가 상기 수광부에 전송되는 단계; (c) 상기 조절용 볼트에 의해 상기 가시대역 광신호의 초점이 조절되는 단계; 및 (d) 상기 조작부로부터 상기 광신호의 초점조절 완료명령이 입력되면, 상기 제어부가 상기 제1 발광부의 동작을 종료시키는 단계를 포함하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법이 제공된다.On the other hand, according to another aspect of the present invention for achieving the above object, the optical transmission unit having a first light emitting portion for emitting a visible band optical signal and a second light emitting portion for emitting an invisible band optical signal bolt for adjustment A method for adjusting a transmission optical focus of an elevator monitoring system fixed by a light receiving unit, the light receiving unit receiving an optical signal, an operation unit and a control unit, the method comprising: (a) inputting a focus adjustment command of the optical signal from the operation unit to the control unit; ; (b) transmitting a visible light signal from the first light emitter to the light receiver as the controller operates the first light emitter; (c) adjusting the focus of the visible band optical signal by the adjusting bolt; And (d) when the focus adjustment completion command of the optical signal is input from the operation unit, the control unit terminating the operation of the first light emitting unit.
또한, 상기 (c) 단계는, 상기 조절용 볼트의 좌측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 좌측으로 조절되고, 상기 좌측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 우측으로 조절된다.Also, in the step (c), when the left bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the left side, and when the left bolt is drawn out of the insertion hole, the focus of the visible band optical signal is right. Is adjusted.
또한, 상기 (c) 단계는, 상기 조절용 볼트의 우측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 우측으로 조절되고, 상기 우측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 좌측으로 조절된다.Also, in the step (c), when the right bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the right, and when the right bolt is drawn out of the insertion hole, the focus of the visible band optical signal is left. Is adjusted.
또한, 상기 (c) 단계는, 상기 조절용 볼트의 상측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 상측으로 조절되고, 상기 상측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 하측으로 조절된다.Also, in the step (c), when the upper bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is lowered. Is adjusted.
그리고, 상기 (c) 단계는, 상기 조절용 볼트의 하측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 하측으로 조절되고, 상기 하측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 상측으로 조절된다.In the step (c), when the lower bolt of the adjustment bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is upward. Is adjusted.
본 발명에 의하면, 엘리베이터의 내부를 촬영한 감시영상을 비가시 대역의 광신호로 전송하므로, 엘리베이터가 상승 또는 하강할 때 케이블이 훼손되거나 끊어지는 문제가 발생되지 않으며 감시영상을 안정적으로 전송할 수 있다.According to the present invention, since the surveillance image photographing the interior of the elevator is transmitted as an optical signal in the invisible band, the cable is not damaged or broken when the elevator is raised or lowered, and the surveillance image can be transmitted stably. .
또한, 엘리베이터가 고층까지 올라갈 때도 노이즈에 영향을 받지 않고 선명한 감시영상을 전송할 수 있다.In addition, even when the elevator goes upstairs, it is possible to transmit a clear surveillance image without being affected by noise.
또한, 초기 설치 비용이 과다하게 소요되지 않고, 배선된 선로를 유지하는 비용도 많이 소요되지 않는다.In addition, the initial installation cost is not excessively high, and the cost of maintaining the wired line is not high.
그리고, 가시대역의 광신호를 이용하므로 광신호의 초점을 쉽게 조절할 수 있다.In addition, since the optical signal in the visible band is used, the focus of the optical signal can be easily adjusted.
도 1은 본 발명의 실시예에 따른 엘리베이터 감시 시스템의 구성을 개략적으로 나타낸 구성도이다.1 is a configuration diagram schematically showing the configuration of an elevator monitoring system according to an embodiment of the present invention.
도 2는 본 발명의 실시예에 따른 광송신부와 광수신부의 구성요소를 나타낸 도면이다. 2 is a view showing the components of the optical transmitter and the optical receiver according to an embodiment of the present invention.
도 3은 본 발명의 실시예에 따른 광송신부의 기능 블럭을 나타낸 구성도이다.3 is a block diagram showing a functional block of an optical transmitter according to an exemplary embodiment of the present invention.
도 4는 본 발명의 실시예에 따른 광수신부의 기능 블럭을 나타낸 구성도이다. 4 is a block diagram showing a functional block of an optical receiver according to an embodiment of the present invention.
도 5는 본 발명의 실시예에 따른 발광부 및 수광부의 구조를 나타낸 도면이다.5 is a view showing the structure of the light emitting unit and the light receiving unit according to the embodiment of the present invention.
도 6은 본 발명의 실시예에 따른 발광부를 제어하는 광송신부의 주요 구조를 나타낸 구성도이다.6 is a block diagram showing the main structure of the optical transmitter for controlling the light emitting unit according to an embodiment of the present invention.
도 7은 본 발명의 실시예에 따른 발광부의 광 송출각도 및 수광부의 광 수신각도를 나타낸 도면이다.7 is a view showing the light emitting angle of the light emitting unit and the light receiving angle of the light receiving unit according to the embodiment of the present invention.
도 8은 본 발명의 실시예에 따른 광송신부에 대한 단면 구조도를 나타낸 도면이다.8 is a view showing a cross-sectional structure of the optical transmitter according to an embodiment of the present invention.
도 9는 본 발명의 실시예에 따른 가시대역 광신호의 초점을 조절하기 위한 조절용 볼트의 예를 나타낸 도면이다.9 is a view showing an example of the adjustment bolt for adjusting the focus of the visible band optical signal according to an embodiment of the present invention.
도 10은 본 발명의 실시예에 따른 가시대역 광신호의 초점이 조절용 볼트에 의해 조절되는 예를 나타낸 도면이다.FIG. 10 is a diagram illustrating an example in which a focus of a visible light signal is adjusted by an adjusting bolt according to an exemplary embodiment of the present invention.
도 11은 본 발명의 실시예에 따른 엘리베이터 감시 시스템의 전송 광 초점 조절 방법을 설명하기 위한 동작 흐름도를 나타낸 도면이다.11 is a flowchart illustrating an operation of adjusting a transmission optical focus of an elevator monitoring system according to an exemplary embodiment of the present invention.
도 12는 본 발명의 실시예에 따라 광송신부와 광수신부를 강력 자석으로 고정시킨 예를 나타낸 도면이다.12 is a view showing an example in which the optical transmitting unit and the optical receiving unit is fixed with a strong magnet according to an embodiment of the present invention.
도 13은 본 발명의 실시예에 따른 광송신부와 광수신부에 투명 아크릴로 외부 덮개를 설치한 예를 나타낸 도면이다.FIG. 13 is a view showing an example in which an outer cover is installed with a transparent acrylic light transmitting unit and a light receiving unit according to an embodiment of the present invention.
도 14는 본 발명의 실시예에 따른 광수신부가 빛을 반사하는 재질에 의해 광신호를 모아 수신하는 예를 나타낸 도면이다.14 is a view showing an example in which an optical receiver collects and receives an optical signal by a material reflecting light according to an exemplary embodiment of the present invention.
본 발명에 따른 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법의 실시예를 첨부도면을 참조하여 상세히 설명하기로 한다. 첨부도면을 참조하여 설명함에 있어 동일하거나 대응하는 구성 요소는 동일한 도면번호를 부여하고 이에 대해 중복되는 설명은 생략하기로 한다.An embodiment of an elevator monitoring system and a transmission optical focus adjusting method thereof according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components will be given the same reference numerals and redundant description thereof will be omitted.
도 1은 본 발명의 실시예에 따른 엘리베이터 감시 시스템의 구성을 개략적으로 나타낸 구성도이다.1 is a configuration diagram schematically showing the configuration of an elevator monitoring system according to an embodiment of the present invention.
도 1을 참조하면, 본 발명에 따른 엘리베이터 감시 시스템은, 엘리베이터(100)와 영상 처리부(110), 광송신부(120), 광수신부(130), 단자부(140) 및 감시컴퓨터(150)를 포함한다.Referring to FIG. 1, an elevator monitoring system according to the present invention includes an elevator 100, an image processing unit 110, an optical transmitter 120, an optical receiver 130, a terminal unit 140, and a monitoring computer 150. do.
엘리베이터(100)는 사람들을 태우고 위 또는 아래로 이동하는 장치이고, 영상 처리부(110)는 엘리베이터의 내부를 촬영하여 감시영상을 획득하며, 광송신부(120)는 획득한 감시영상을 광신호로 변환해 송신하며, 광수신부(130)는 광신호를 수신해 원래의 감시영상으로 복원하고, 감시컴퓨터(150)는 감시영상을 저장하거나 디스플레이한다.The elevator 100 is a device that burns people and moves up or down, the image processing unit 110 acquires a surveillance image by photographing the interior of the elevator, and the optical transmitter 120 converts the obtained surveillance image into an optical signal. The optical receiver 130 receives the optical signal and restores the original surveillance image, and the surveillance computer 150 stores or displays the surveillance image.
여기서, 영상 처리부(110)는 CCTV(Closed circuit TV)와 같은 감시 카메라(200)에 의해 촬영된 감시영상을 디지털 신호로 변환해 광송신부(120)에 전달한다. Here, the image processor 110 converts the surveillance image photographed by the surveillance camera 200 such as a closed circuit TV (CCTV) into a digital signal and transmits the digital signal to the optical transmitter 120.
광송신부(120)는 영상 처리부(110)로부터 전달받은 감시영상의 디지털 신호를 적외선 광신호로 광수신부(230)에 전송한다. The optical transmitter 120 transmits the digital signal of the surveillance image received from the image processor 110 to the optical receiver 230 as an infrared optical signal.
본 발명의 실시예에서는 광송신부(120)와 광수신부(130) 간의 영상 전송방식으로 광통신을 사용한다. 광통신은 정보를 광신호로 변환해 전송하는 방식이다. 송신측에서는 음성, 영상, 데이터를 전기신호로 변환한 후 광신호로 송신한다. 수신측에서는 이 광신호를 수신하고 전기신호로 변환해 원래의 음성, 영상, 데이터로 복원한다.In the exemplary embodiment of the present invention, optical communication is used as an image transmission method between the optical transmitter 120 and the optical receiver 130. Optical communication converts information into optical signals and transmits them. The transmitting side converts audio, video and data into electric signals and transmits them as optical signals. The receiving side receives the optical signal, converts it into an electrical signal, and restores the original audio, video, and data.
본 발명의 실시예에서는 광신호로써 적외선이나 레이저(Laser) 또는 LED를 사용하여 감시영상을 전송한다. 레이저는 강한 지향성을 가지므로 대역간섭이 없어 데이터 전송에 안정적이다.In an embodiment of the present invention, the surveillance image is transmitted using infrared rays, a laser, or an LED as an optical signal. The laser has a strong directivity, so there is no band interference and it is stable for data transmission.
광수신부(130)는 광신호를 수신하여 디지털 형태의 영상 데이터로 복원해 감시컴퓨터(150)에 전송한다. The optical receiver 130 receives the optical signal, restores the optical signal to digital image data, and transmits the optical signal to the monitoring computer 150.
광수신부(130)와 감시컴퓨터(150) 사이에 단자부(140)를 구비할 수 있다. 감시컴퓨터(150)는 보통 중앙 통제실(미도시)에 구비된다. 중앙 통제실이 엘리베이터(100)로부터 멀리 떨어지면 전송되는 광신호에 손실이 발생되므로, 감시컴퓨터(150)와 광수신부(130) 사이에 단자부(140)를 구비하여, 단자부(140)를 통해 광신호를 보완하여 안정적으로 전송할 수 있다. 이때, 단자부(140)는 광신호를 보완하는 증폭회로를 포함할 수 있다.The terminal unit 140 may be provided between the light receiving unit 130 and the monitoring computer 150. The monitoring computer 150 is usually provided in a central control room (not shown). When the central control room is far from the elevator 100, a loss occurs in the transmitted optical signal, so that the terminal unit 140 is provided between the monitoring computer 150 and the light receiving unit 130, and the optical signal is transmitted through the terminal unit 140. Complementary and stable transmission In this case, the terminal unit 140 may include an amplifier circuit that complements the optical signal.
감시컴퓨터(150)는 감시영상을 저장하거나 화면에 디스플레이한다. 즉, 감시컴퓨터(150)는 감시영상을 저장하는 DVR(Digital Video Recorder)이나 하드디스크드라이브(Hard Disk Drive) 또는 필름 테이프(Film Tape)와 같은 저장장치를 포함한다. 또한, 감시컴퓨터(150)는 모니터와 같은 디스플레이 장치를 포함한다. The surveillance computer 150 stores the surveillance image or displays it on the screen. That is, the surveillance computer 150 includes a storage device such as a digital video recorder (DVR), a hard disk drive, or a film tape that stores the surveillance image. The monitoring computer 150 also includes a display device such as a monitor.
도 2는 본 발명의 실시예에 따른 광송신부와 광수신부의 구성요소를 나타낸 도면이다. 2 is a view showing the components of the optical transmitter and the optical receiver according to an embodiment of the present invention.
도 2를 참조하면, 엘리베이터(100) 내에 설치된 감시 카메라(200)는 촬영한 감시영상을 영상 처리부(110)로 전달하고, 영상 처리부(110)는 감시영상을 영상 데이터로 변환하여 광송신부(120)에 전달하며, 광송신부(120)는 영상 데이터를 적외선 광이나 LED 광 또는 레이저 광의 광신호로 변환해 송신한다. Referring to FIG. 2, the surveillance camera 200 installed in the elevator 100 transmits the captured surveillance image to the image processing unit 110, and the image processing unit 110 converts the surveillance image into image data to transmit an optical transmitter 120. The optical transmitter 120 converts image data into an optical signal of infrared light, LED light, or laser light and transmits the same.
광수신부(130)는 광송신부(120)에 대응되게 설치되고, 광송신부(120)에서 송신된 광신호를 수신하며, 광신호를 영상 데이터로 변환하여 단자부(140)를 경유해 감시컴퓨터(150)에 전송한다.The optical receiver 130 is installed to correspond to the optical transmitter 120, receives the optical signal transmitted from the optical transmitter 120, converts the optical signal into image data, and monitors the computer 150 through the terminal unit 140. To be sent).
도 3은 본 발명의 실시예에 따른 광송신부의 기능 블럭을 나타낸 구성도이다.3 is a block diagram showing a functional block of an optical transmitter according to an exemplary embodiment of the present invention.
도 3을 참조하면, 본 발명의 실시예에 따른 광송신부(120)는 신호 입력부(300), 신호 검출부(302), 표시부(304), 신호 변환부(306), 발광부(308), 전원부(310)를 포함한다.Referring to FIG. 3, an optical transmitter 120 according to an exemplary embodiment of the present invention includes a signal input unit 300, a signal detector 302, a display unit 304, a signal converter 306, a light emitter 308, and a power supply unit. 310.
신호 입력부(300)는 감시 카메라(200)로부터 전달된 감시 영상을 입력하여 신호 변환부(306) 및 신호 검출부(302)에 전달한다.The signal input unit 300 receives a surveillance image transmitted from the surveillance camera 200 and transmits the surveillance image to the signal converter 306 and the signal detector 302.
신호 검출부(302)는 신호 입력부(300)로부터 전달된 영상신호가 정상적으로 수신되는 지를 검출해 표시부(304)에 전달한다.The signal detector 302 detects whether the video signal transmitted from the signal input unit 300 is normally received and transmits it to the display unit 304.
표시부(304)는 예를 들면, LED(Light emitting diode)로 구성되고, 영상신호가 정상적으로 입력되면 녹색의 LED를 발광하고, 영상신호가 입력되지 않으면 적색(赤色)의 LED를 발광하여 표시한다. 따라서 사용자는 LED의 발광색을 보고 영상신호가 정상적으로 입력되는 지를 확인할 수 있다.The display unit 304 includes, for example, a light emitting diode (LED), and emits a green LED when an image signal is normally input, and emits and displays a red LED when the image signal is not input. Therefore, the user can check whether the image signal is normally input by looking at the light emission color of the LED.
신호 변환부(306)는 신호 입력부(300)로부터 전달된 영상신호를 주파수 성분으로 변환한다. 보통 주파수 대역으로 10㎒ 내지 100㎒을 사용할 수 있으며, 이에 한정하지 않고 1㎓ 이상의 주파수 대역 또는 1 ㎔ 이상의 주파수 대역을 사용할 수 있다.The signal converter 306 converts the video signal transmitted from the signal input unit 300 into frequency components. Usually, 10 MHz to 100 MHz may be used as the frequency band, without being limited thereto, a frequency band of 1 Hz or more or a frequency band of 1 Hz or more may be used.
발광부(308)는 신호 변환부(306)에 의하여 변환된 주파수 신호를 광신호로 변환한다. 특히 본 발명의 실시예에서는 광신호로 LED 광이나 레이저 광 또는 적외선 광을 사용한다. 따라서 발광부(308)는 예컨대 레이저 다이오드를 사용하여 레이저 빔의 강도를 조절해 데이터를 전송할 수 있다. The light emitter 308 converts the frequency signal converted by the signal converter 306 into an optical signal. In particular, the embodiment of the present invention uses the LED light, laser light or infrared light as the optical signal. Therefore, the light emitter 308 may transmit data by adjusting the intensity of the laser beam using, for example, a laser diode.
또한, 발광부(308)에는 도시되지 않았으나 광신호가 일정 강도와 일정 각도를 가지도록 하기 위하여 광학부(미도시)가 구성될 수 있다. 이를 위해 광학부에는 렌즈가 구성되고, 렌즈는 빛을 모을 수 있는 볼록렌즈를 사용할 수 있다.In addition, although not shown in the light emitting unit 308, an optical unit (not shown) may be configured to have an optical signal having a predetermined intensity and a predetermined angle. To this end, a lens is configured in the optical unit, and the lens may use a convex lens that can collect light.
전원부(310)는 각 구성요소들에 전원을 공급한다. 즉 외부의 교류전원(약 220V)을 직류전원(DC) 12V로 변환하여 공급한다. 또한, 신호의 품질을 높이기 위해 다운트랜스 방식이 적용될 수 있으며, 각 구성회로 부품들 간에 상호 신호 간섭을 최소화 하기 위하여 각 구성요소 별로 분리하여 전원을 공급한다. 그리고, 교류전원을 이용하지 않고 휴대용 배터리를 이용할 수 있다.The power supply unit 310 supplies power to each component. That is, the external AC power supply (about 220V) is converted into DC power supply 12V and supplied. In addition, the downtransmission method may be applied to increase the signal quality, and separate power is provided for each component in order to minimize mutual signal interference between components. And a portable battery can be used without using an AC power supply.
도 4는 본 발명의 실시예에 따른 광수신부의 기능 블럭을 나타낸 구성도이다. 4 is a block diagram showing a functional block of an optical receiver according to an embodiment of the present invention.
도 4를 참조하면, 본 발명의 실시예에 따른 광수신부(130)는 전원부(440)와, 수광부(450), 전압 승압부(452), 기준주파수 발생부(454), 주파수 변환부(456), 주파수 검출부(458), 전압 변환부(460) 및 필터부(462)를 포함한다.Referring to FIG. 4, the light receiver 130 according to the embodiment of the present invention includes a power supply unit 440, a light receiving unit 450, a voltage boosting unit 452, a reference frequency generator 454, and a frequency converter 456. ), A frequency detector 458, a voltage converter 460, and a filter 462.
전원부(440)는 광수신부의 동작에 필요한 전원을 공급한다.The power supply unit 440 supplies power required for the operation of the light receiver.
수광부(450)는 가시대역 광신호 또는 비가시대역 광신호를 수신하여 주파수변환부(456)에 전달한다. 즉, 수광부(450)는 발광부(408)에서 송신된 레이저 광신호나 LED 광신호 또는 적외선 광신호를 수신하며, 이를 위해 포토 디텍터(Photo detector)가 구성된다. The light receiver 450 receives a visible band optical signal or an invisible band optical signal and transmits the same to the frequency converter 456. That is, the light receiver 450 receives a laser light signal, an LED light signal, or an infrared light signal transmitted from the light emitter 408, and a photo detector is configured for this purpose.
또한, 수광부(450)는 발광부(408)의 레이저 다이오드로부터 전송된 레이저 빔을 수신하기 위해 미세한 신호를 감지하는 고성능 POST Amplifier를 구성할 수 있다. 이때, POST Amplifier에 승압전압을 제공하기 위해 전원부(440)가 구성된다. In addition, the light receiver 450 may configure a high performance POST amplifier that detects a minute signal in order to receive a laser beam transmitted from the laser diode of the light emitter 408. At this time, the power supply unit 440 is configured to provide a boosted voltage to the POST Amplifier.
전원부(440)는 전술한 광송신부(120)의 전원부(310)와 동일하게 외부의 교류전원(약 220V)을 직류전원(DC) 12V로 변환하여 공급한다. The power supply unit 440 converts an external AC power (about 220V) into a DC power supply DC of 12V in the same manner as the power supply unit 310 of the optical transmitter 120 described above.
전압 승압부(452)는 광신호를 검출하는데 필요한 전압을 승압하여 수광부(450)에 공급한다. 보통 전원부(440)로부터 수광부(450)에 공급되는 전압은 DC 5V이지만 이를 승압하여 약 DC 70V 내지 100V 로 승압한다.The voltage boosting unit 452 boosts the voltage necessary to detect the optical signal and supplies the voltage to the light receiving unit 450. Usually, the voltage supplied from the power supply unit 440 to the light receiving unit 450 is DC 5V, but the voltage is boosted to about DC 70V to 100V.
주파수 변환부(456)는 미세한 광신호를 증폭하고 전기적 신호로 변환해 주파수 성분을 생성한다.The frequency converter 456 amplifies the minute optical signal and converts it into an electrical signal to generate a frequency component.
기준주파수 발생기(454)는 원신호를 복원하는데 필요한 기준주파수(Reference Frequency)를 발생한다.The reference frequency generator 454 generates a reference frequency required to recover the original signal.
주파수 검출부(458)는 주파수 변환부(456)로부터 전달받은 주파수와 기준주파수 발생기(454)로부터 발생된 기준주파수를 비교하여 차이가 발생하면, 그 차이를 전기적 펄스 신호로 발생한다.The frequency detector 458 compares the frequency transmitted from the frequency converter 456 with the reference frequency generated by the reference frequency generator 454 and generates a difference as an electric pulse signal.
전압 변환부(460)는 주파수 검출부(458)에서 발생한 펄스 신호를 전압 신호로 변환한다.The voltage converter 460 converts the pulse signal generated by the frequency detector 458 into a voltage signal.
필터부(462)는 원래의 영상신호로 복원하기 위해 불필요한 노이즈 성분을 제거한다. 즉 노이즈 성분을 제거하여 복원된 최종 영상신호를 송출한다.The filter unit 462 removes unnecessary noise components to restore the original video signal. That is, the final video signal reconstructed by removing the noise component is transmitted.
따라서 본 발명의 실시예에 따른 광수신부(130)는 엘리베이터 내부를 촬영한 감시 영상을 사람들의 눈에 보이지 않는 적외선 신호로 수신하여 실시간으로 감시컴퓨터(150)에 전송할 수 있다. Therefore, the light receiving unit 130 according to the embodiment of the present invention may receive the surveillance image photographing the interior of the elevator as an infrared signal invisible to people and transmit it to the surveillance computer 150 in real time.
도 5는 본 발명의 실시예에 따른 발광부 및 수광부의 구조를 나타낸 도면이다.5 is a view showing the structure of the light emitting unit and the light receiving unit according to the embodiment of the present invention.
도 5에 도시된 바와 같이, 본 발명의 실시예에 따른 발광부(308)는 가시대역 광신호를 발생하는 가시 광원체를 구비하는 제1 발광부(510)와, 비가시대역 광신호를 발생하는 비가시 광원체를 구비하는 제2 발광부(520)를 포함한다.As shown in FIG. 5, the light emitting unit 308 according to an exemplary embodiment of the present invention generates a first light emitting unit 510 including a visible light source body for generating a visible light signal, and an invisible band optical signal. And a second light emitting part 520 having an invisible light source body.
제1 발광부(510)는 엘리베이터 감시 시스템에서 광송신부(120)로부터 송출된 광신호가 광수신부(130)에 정확히 전송되는지를 알아보기 위한 가시대역 광신호, 즉 광 초점 조절용 LED 광 또는 레이저 광을 발광하여 수광부(450)에 전송한다.The first light emitting unit 510 emits a visible band optical signal for checking whether the optical signal transmitted from the optical transmitter 120 in the elevator monitoring system is correctly transmitted to the optical receiver 130, that is, LED light or laser light for optical focus adjustment. The light is transmitted to the light receiving unit 450.
제2 발광부(520)는 광송신부(120)와 광수신부(130) 간에 전송되는 광신호의 초점이 조절된 후에, 광송신부(120)로부터 광수신부(130)에 광신호를 전달하기 위한 비가시대역 광신호, 즉 적외선 광을 발광하여 수광부(450)에 전송한다.After the focus of the optical signal transmitted between the optical transmitter 120 and the optical receiver 130 is adjusted, the second light emitter 520 may provide a ratio for transferring the optical signal from the optical transmitter 120 to the optical receiver 130. The time-domain optical signal, that is, infrared light, is emitted and transmitted to the light receiver 450.
따라서, 엘리베이터(100)가 도 1에 도시된 바와 같이 각 층을 지나 이동될 때, 엘리베이터 내부의 감시 카메라(200)가 촬영한 감시 영상이 광송신부(120)로부터 광수신부(130)에 비가시 대역의 적외선 광으로 전송됨으로써, 엘리베이터를 이용하는 사람들의 눈에 보이지 않게 됨에 따라 사람들이 안심하고 엘리베이터를 이용할 수 있다.Therefore, when the elevator 100 is moved through each floor as shown in FIG. 1, the surveillance image captured by the surveillance camera 200 inside the elevator is invisible from the light transmitter 120 to the light receiver 130. By transmitting in the infrared light of the band, people can use the elevator with confidence as it becomes invisible to people using the elevator.
또한, 광송신부(120)와 광수신부(130)에 외부로부터 물이나 오물질이 투입되지 못하도록 도 13에 도시된 바와 같이 투명 아크릴로 외부 덮개를 설치하면, 방수와 더불어 외부 요인에 의해 작동에 오류가 발생되지 않는다. 도 13은 본 발명의 실시예에 따른 광송신부와 광수신부에 투명 아크릴로 외부 덮개를 설치한 예를 나타낸 도면이다.In addition, when the outer cover is installed with transparent acrylic as shown in FIG. 13 to prevent water or dirt from being injected into the light transmitting unit 120 and the light receiving unit 130 from the outside, errors in operation due to external factors as well as waterproofing. Does not occur. FIG. 13 is a view showing an example in which an outer cover is installed with a transparent acrylic light transmitting unit and a light receiving unit according to an embodiment of the present invention.
그리고, 광수신부(130)에 도 14에 도시된 바와 같이 빛을 반사할 수 있는 재질, 예컨대, 알루미늄 포일(Aluminum Foil)을 내장하여, 광송신부(120)로부터 전송되는 광신호를 알루미늄 포일에 의해 모아서 수신함으로써 수신 감도를 높일 수 있다. 도 14는 본 발명의 실시예에 따른 광수신부에 빛을 반사하는 재질을 내장하여 광신호를 모아서 수신하는 예를 나타낸 도면이다.As shown in FIG. 14, the light receiving unit 130 includes a material capable of reflecting light, for example, an aluminum foil, so that the optical signal transmitted from the light transmitting unit 120 may be transferred by the aluminum foil. Receiving sensitivity can be improved by collecting and receiving. 14 is a view illustrating an example of collecting and receiving an optical signal by embedding a material reflecting light in an optical receiver according to an exemplary embodiment of the present invention.
도 6은 본 발명의 실시예에 따른 발광부를 제어하는 광송신부의 주요 구조를 나타낸 구성도이다.6 is a block diagram showing the main structure of the optical transmitter for controlling the light emitting unit according to an embodiment of the present invention.
도 6을 참조하면, 본 발명의 실시예에 따른 광송신부(120)는 도 3에 도시된 구성 요소들을 모두 포함하고, 제1 발광부(510)와 제2 발광부(520)의 발광 동작을 제어하는 제어부(610)와, 광신호의 초점조절 명령을 입력하거나 감시 동작을 실행하도록 하는 감시 명령을 입력하는 조작부(620)를 더 포함한다.Referring to FIG. 6, the optical transmitter 120 according to the exemplary embodiment of the present invention includes all the components shown in FIG. 3, and performs light emission operations of the first light emitter 510 and the second light emitter 520. The controller 610 may further include a control unit 610 for inputting a control command for inputting a focus control command of an optical signal or a monitoring command for executing a monitoring operation.
제어부(610)는 사용자의 조작에 따라 조작부(620)로부터 초점조절 명령이 입력되면 제1 발광부(510)를 작동시킨다. 따라서, 제1 발광부(510)에서 가시대역의 LED 광 또는 레이저 광이 발광된다.The controller 610 operates the first light emitting unit 510 when a focus adjustment command is input from the manipulation unit 620 according to a user's manipulation. Therefore, the LED light or laser light in the visible band is emitted from the first light emitting unit 510.
이에, 사용자는 제1 발광부(510)에서 광수진부(130)로 전송되는 가시대역의 LED 광이나 레이저 광을 보면서 광신호의 초점을 조절한다.Accordingly, the user adjusts the focus of the optical signal while watching the LED light or the laser light in the visible band transmitted from the first light emitter 510 to the photoreceiver 130.
이후, 제어부(610)는 사용자의 조작에 따라 조작부(620)로부터 감시 명령이 입력되면 제2 발광부(520)를 작동시킨다. 따라서, 제2 발광부(520)에서 비가시 대역의 적외선 광이 발광된다.Thereafter, the controller 610 operates the second light emitting unit 520 when a monitoring command is input from the operation unit 620 according to a user's operation. Therefore, the infrared light of the invisible band is emitted from the second light emitting unit 520.
이에, 엘리베이터 내부를 촬영한 감시 영상이 광송신부(120)에서 광수신부(130)로 적외선 신호로 전송되므로, 사람들의 눈에 보이지 않게 전송된다. Accordingly, since the surveillance image photographing the interior of the elevator is transmitted from the optical transmitter 120 to the optical receiver 130 as an infrared signal, it is transmitted invisibly to people.
도 7은 본 발명의 실시예에 따른 발광부의 광 송출각도 및 수광부의 광 수신각도를 나타낸 도면이다. 7 is a view showing the light emitting angle of the light emitting unit and the light receiving angle of the light receiving unit according to the embodiment of the present invention.
도 7에 도시된 바와 같이, 발광부(308)는 도 3에 도시된 구성 요소가 포함되고, 비가시 대역의 적외선 광을 발광하는 제2 발광부(520)와 이 발광된 비가시 대역의 적외선 광을 일정 각도와 일정 강도로 유지시켜 주는 발광렌즈(710)를 포함한다. 이때, 발광부(308)는 제1 발광부(510)도 포함되나, 설명의 편의상 제2 발광부(520)를 예로 설명한다.As illustrated in FIG. 7, the light emitter 308 includes the components illustrated in FIG. 3, and includes a second light emitter 520 that emits infrared light in the invisible band and infrared light in the invisible band. It includes a light emitting lens 710 for maintaining the light at a predetermined angle and a constant intensity. In this case, the light emitting unit 308 also includes a first light emitting unit 510, but for convenience of description, the second light emitting unit 520 will be described as an example.
수광부(450)는 도 4에 도시된 구성 요소가 포함되고, 비가시 대역의 적외선 광을 수신하는 수광렌즈(720)와 수광면적부(730)를 포함한다. 이때, 수광렌즈(720)와 수광면적부(730)는 가시 대역의 LED 광 또는 레이저 광도 수신한다.The light receiving unit 450 includes the components shown in FIG. 4, and includes a light receiving lens 720 and a light receiving area 730 that receive infrared light in an invisible band. In this case, the light receiving lens 720 and the light receiving area 730 also receive LED light or laser light in a visible band.
여기서, 발광렌즈(710) 및 수광렌즈(720)는 광신호가 흩어지는 것을 방지하기 위해 볼록렌즈로 구성된다. 원래 광신호는 방사각도가 있으며, 보통 부채꼴 모양으로 방사된다. 방사각도를 최소한으로 줄여서 광신호가 신호왜곡 없이 수신쪽에 도달되도록 하기 위해 발광부(308)와 수광부(450) 모두에 볼록렌즈의 발광렌즈와 수광렌즈(710, 720)가 구비된다. 블록렌즈는 입사된 빛을 안쪽으로 모으므로 광신호가 일정 각도와 일정 강도를 유지한 채 발광부(308)에서 수광부(450)로 전달되도록 한다.Here, the light emitting lens 710 and the light receiving lens 720 are configured as convex lenses to prevent the optical signal from being scattered. Originally, optical signals have an angle of radiation, usually radiating in a fan shape. In order to reduce the angle of radiation to a minimum so that the optical signal reaches the receiving side without signal distortion, the light emitting lenses of the convex lens and the light receiving lenses 710 and 720 are provided in both the light emitting unit 308 and the light receiving unit 450. Since the block lens collects the incident light inward, the optical signal is transmitted from the light emitter 308 to the light receiver 450 while maintaining a predetermined angle and a predetermined intensity.
또한, 발광부(308)와 수광부(450)는 나사구조로 높이 조절이 가능하다. 즉, 캡이 발광부(308) 또는 수광부(450)의 몸체와 결합하여 시계방향으로 돌리면 캡이 바깥쪽으로 이동하면서 높이가 올라간다. 이와 달리 반시계방향으로 돌리면 캡이 안쪽으로 이동하면서 높이가 낮아진다. In addition, the light emitting unit 308 and the light receiving unit 450 may be adjusted in height with a screw structure. That is, when the cap is coupled to the body of the light emitting unit 308 or the light receiving unit 450 and turned clockwise, the cap moves upward and the height increases. In contrast, turning counterclockwise decreases the height as the cap moves inward.
따라서 전송되는 광신호의 굴절각도를 변경하여 광신호의 강도를 조절할 수 있다.Therefore, the intensity of the optical signal can be adjusted by changing the refractive angle of the transmitted optical signal.
도 8은 본 발명의 실시예에 따른 광송신부에 대한 단면 구조도를 나타낸 도면이다.8 is a view showing a cross-sectional structure of the optical transmitter according to an embodiment of the present invention.
도 8에 도시된 바와 같이, 본 발명의 실시예에 따른 광송신부(120)는, 가시대역 광신호를 발생하는 제1 발광부(510)와, 비가시대역 광신호를 발생하는 제2 발광부(520)를 구비하는 광송신부(120); 광송신부(120)를 고정시키는 고정대(810); 고정대(810)의 각 모서리에 삽입되어 광송신부(120)를 고정시키며, 제1 발광부(510)로부터 발생된 가시대역 광신호의 초점을 조절하기 위한 조절용 볼트(820)를 포함한다.As shown in FIG. 8, the optical transmitter 120 according to an embodiment of the present invention includes a first light emitting unit 510 for generating a visible band optical signal and a second light emitting unit for generating an invisible band optical signal. Light transmitting unit 120 having a (520); Fixture 810 for fixing the optical transmitter 120; It is inserted into each corner of the holder 810 to fix the optical transmitter 120, and includes an adjustment bolt 820 for adjusting the focus of the visible light signal generated from the first light emitting unit 510.
이때, 광송신부(120)와 고정대(810)는 서로 대응되게 각 모서리에 삽입구(830)가 형성되고, 조절용 볼트(820)가 삽입구(830)에 나사 결합되어, 광송신부(120)가 고정대(810)에 고정된다.At this time, the optical transmitter 120 and the holder 810 is formed in each corner so as to correspond to each other, the insertion hole 830 is formed, the adjustment bolt 820 is screwed to the insertion hole 830, the optical transmitter 120 is fixed ( 810 is fixed.
또한, 광송신부(120)는 도 12에 도시된 바와 같이 엘리베이터(100)의 바닥 외부에 설치될 때, 고정대(810)의 하단부에 강력 자석(1220)을 구비하여, 강력 자석(1220)의 자력에 의해 고정 브라켓(1210)에 고정시킬 수 있다. 도 12는 본 발명의 실시예에 따라 광송신부와 광수신부를 강력 자석으로 고정시킨 예를 나타낸 도면이다. 도 12에서, 광수신부(130)도 마찬가지로 하단부에 강력 자석(1220)을 구비하여 그 강력 자석(1220)의 자력에 의해 고정 브라켓(1210)에 고정시킬 수 있다.In addition, when the optical transmitter 120 is installed outside the bottom of the elevator 100 as shown in FIG. 12, the optical transmitter 1220 includes a strong magnet 1220 at a lower end of the fixing stand 810, and thus, the magnetic force of the strong magnet 1220. It can be fixed to the fixing bracket 1210 by. 12 is a view showing an example in which the optical transmitting unit and the optical receiving unit is fixed with a strong magnet according to an embodiment of the present invention. In FIG. 12, the light receiving unit 130 may also be provided with a strong magnet 1220 at a lower end thereof, and may be fixed to the fixing bracket 1210 by the magnetic force of the strong magnet 1220.
또한, 조절용 볼트(810)는, 도 9에 도시된 바와 같이 가시대역 광신호의 초점을 좌측으로 조절하기 위한 좌측 볼트(822, 824)와, 가시대역 광신호의 초점을 우측으로 조절하기 위한 우측 볼트(826, 828), 가시대역 광신호의 초점을 상측으로 조절하기 위한 상측 볼트(822, 826) 및 가시대역 광신호의 초점을 하측으로 조절하기 위한 하측 볼트(824, 828)를 포함한다. 도 9는 본 발명의 실시예에 따른 가시대역 광신호의 초점을 조절하기 위한 조절용 볼트의 예를 나타낸 도면이다.In addition, the adjustment bolt 810, the left bolts (822, 824) for adjusting the focus of the visible band optical signal to the left, as shown in Figure 9, and the right for adjusting the focus of the visible band optical signal to the right Bolts 826 and 828, upper bolts 822 and 826 for adjusting the focus of the visible band optical signal upward and lower bolts 824 and 828 for adjusting the focus of the visible band optical signal downward. 9 is a view showing an example of the adjustment bolt for adjusting the focus of the visible band optical signal according to an embodiment of the present invention.
또한, 제1 발광부(510)에서 발생된 가시대역 광신호가 수광부(130)에 우측으로 틀어진 상태로 수신될 때, 도 10에 도시된 바와 같이 좌측 볼트(822)가 시계 방향으로 돌아가며 삽입되면, 좌측 볼트(822)가 삽입되면서 제1 발광부(510)의 좌측을 누르게 됨에 따라 제1 발광부(510)가 좌측으로 기울어져 가시대역 광신호의 초점이 좌측으로 조절된다. 도 10은 본 발명의 실시예에 따른 가시대역 광신호의 초점이 조절용 볼트에 의해 조절되는 예를 나타낸 도면이다.In addition, when the visible light signal generated by the first light emitting unit 510 is received in the state in which the light receiving unit 130 is twisted to the right, as shown in FIG. 10, when the left bolt 822 is inserted in a clockwise direction, As the left bolt 822 is inserted and the left side of the first light emitting unit 510 is pressed, the first light emitting unit 510 is inclined to the left side so that the focus of the visible band optical signal is adjusted to the left side. FIG. 10 is a diagram illustrating an example in which a focus of a visible light signal is adjusted by an adjusting bolt according to an exemplary embodiment of the present invention.
또한, 우측 볼트(826, 828)가 시계 방향으로 돌아가며 삽입되면, 우측 볼트(826, 828)가 삽입되면서 제1 발광부(510)의 우측을 누르게 됨에 따라 제1 발광부(510)가 우측으로 기울어져 가시대역 광신호의 초점이 우측으로 조절된다.In addition, when the right side bolts 826 and 828 are inserted in a clockwise direction, the right side bolts 826 and 828 are inserted to press the right side of the first light emitting unit 510, and thus the first light emitting unit 510 is moved to the right. Tilt to adjust the focus of the visible band optical signal to the right.
또한, 상측 볼트(822, 826)가 시계 방향으로 돌아가며 삽입되면, 가시대역 광신호의 초점이 상측으로 조절되고, 하측 볼트(824, 828)가 시계 방향으로 돌아가며 삽입되면, 가시대역 광신호의 초점이 하측으로 조절된다.In addition, when the upper bolts 822 and 826 are inserted in a clockwise direction, the focus of the visible band optical signal is adjusted upward, and when the lower bolts 824 and 828 are inserted in a clockwise direction, the focus of the visible band optical signal is inserted. This is adjusted downward.
한편, 좌측 볼트(822, 824)가 반시계 방향으로 돌아가며 인출되면, 좌측 볼트(822, 824)가 누르고 있던 제1 발광부(510)의 좌측이 풀리면서 우측으로 기울어져 가시대역 광신호의 초점이 우측으로 조절되고, 우측 볼트(826, 828)가 반시계 방향으로 돌아가며 인출되면, 가시대역 광신호의 초점이 좌측으로 조절된다.On the other hand, when the left bolts 822 and 824 are drawn out in a counterclockwise direction, the left side of the first light emitting part 510 held by the left bolts 822 and 824 is released and tilted to the right to focus the visible light signal. Is adjusted to the right, and when the right bolts 826 and 828 are pulled out counterclockwise, the focus of the visible band optical signal is adjusted to the left.
그리고, 상측 볼트(822, 826)가 반시계 방향으로 돌아가며 인출되면, 가시대역 광신호의 초점이 하측으로 조절되고, 하측 볼트(824, 828)가 반시계 방향으로 돌아가며 인출되면, 가시대역 광신호의 초점이 상측으로 조절된다.When the upper bolts 822 and 826 are drawn out in a counterclockwise direction, the focus of the visible band optical signal is adjusted downward, and when the lower bolts 824 and 828 are drawn out in a counterclockwise direction, the visible band optical signal is taken out. The focus is adjusted upward.
도 11은 본 발명의 실시예에 따른 엘리베이터 감시 시스템의 전송 광 초점 조절 방법을 설명하기 위한 동작 흐름도를 나타낸 도면이다.11 is a flowchart illustrating an operation of adjusting a transmission optical focus of an elevator monitoring system according to an exemplary embodiment of the present invention.
도 11에 도시된 바와 같이, 엘리베이터 감시 시스템에서 제어부(610)는 사용자의 조작에 의해 조작부(620)로부터 초점 조절 명령이 입력되면(S1110-예), 발광부(308)의 제1 발광부(510)를 작동시킨다(S1120). 따라서, 제1 발광부(510)로부터 가시대역의 LED 광신호 또는 레이저 광신호가 발생되어 수광부(450)에 전송된다.As illustrated in FIG. 11, in the elevator monitoring system, when a focus adjustment command is input from the operation unit 620 by a user's operation (S1110-Yes), the first light emission unit of the light emission unit 308 may be used. Operation 510 (S1120). Therefore, the LED light signal or the laser light signal in the visible band is generated from the first light emitting unit 510 and transmitted to the light receiving unit 450.
이때, 발광부(308)에서 수광부(450)로 전송되는 가시대역 LED 광신호 또는 레이저 광신호의 초점이 사용자의 조작에 따른 조절용 볼트(820)에 의해 조절된다. 즉, 조절용 볼트(820)가 시계 방향 또는 반시계 방향으로 돌아가며 가시대역 광신호의 초점이 조절된다(S1130).At this time, the focus of the visible band LED light signal or the laser light signal transmitted from the light emitting unit 308 to the light receiving unit 450 is adjusted by the adjustment bolt 820 according to the user's operation. That is, the adjustment bolt 820 is turned clockwise or counterclockwise to adjust the focus of the visible band optical signal (S1130).
예를 들면, 좌측 볼트(822, 824)가 삽입되어 가시대역 광신호의 초점이 좌측으로 조절되거나, 우측 볼트(826, 828)가 삽입되어 가시대역 광신호의 초점이 우측으로 조절되거나, 상측 볼트(822, 826)가 삽입되어 가시대역 광신호의 초점이 상측으로 조절되거나, 하측 볼트(824, 828)가 삽입되어 가시대역 광신호의 초점이 하측으로 조절되는 것이다.For example, the left bolts 822, 824 are inserted to adjust the focus of the visible light signal to the left, or the right bolts 826 and 828 are inserted to adjust the focus of the visible light signal to the right, or the upper bolt 822, 826 are inserted to adjust the focus of the visible light signal upward, or lower bolts 824, 828 are inserted to adjust the focus of the visible light optical signal downward.
이어, 광 초점 조절이 완료되어 사용자에 의해 조작부(620)로부터 초점 조절 완료 명령이 입력되면(S1140-예), 제어부(610)는 제1 발광부(510)의 동작을 종료한다(S1150). 따라서, 제1 발광부(510)로부터 가시대역의 LED 광신호 또는 레이저 광신호가 발생되지 않는다.Subsequently, when the optical focus adjustment is completed and the focus adjustment completion command is input by the user from the operation unit 620 (S1140-Yes), the controller 610 ends the operation of the first light emitting unit 510 (S1150). Therefore, the LED light signal or the laser light signal in the visible band is not generated from the first light emitting part 510.
한편, 엘리베이터 감시를 위해 사용자의 조작에 따라 조작부(620)로부터 감시 명령이 입력되면, 제어부(620)는 제2 발광부(520)를 작동시킨다. 따라서, 제2 발광부(520)로부터 비가시대역 광신호, 즉 적외선 광신호가 발생되어, 발광부(308)에서 수광부(450)로 전송된다.Meanwhile, when a monitoring command is input from the operation unit 620 according to a user's operation for elevator monitoring, the controller 620 operates the second light emitting unit 520. Therefore, an invisible band optical signal, that is, an infrared optical signal, is generated from the second light emitting unit 520 and transmitted from the light emitting unit 308 to the light receiving unit 450.
따라서, 엘리베이터 내부의 감시 카메라(200)를 통해 촬영된 감시 영상이 발광부(308)에서 눈에 보이지 않는 비가시대역 적외선 신호로 수광부(450)에 전송되므로, 엘리베이터를 이용하는 사람들이나 밖에서 엘리베이터를 바라보는 사람들의 눈에 적외선 신호가 보이지 않게 되어, 사람들은 불안하지 않고 안심하고 엘레베이터를 이용할 수 있다.Therefore, since the surveillance image photographed by the surveillance camera 200 inside the elevator is transmitted to the light receiver 450 as an invisible invisible infrared signal from the light emitter 308, the elevator is used by the elevator or outside. The infrared signal is not visible to the viewer's eyes, so people can use the elevator without worry.
전술한 바와 같이 본 발명에 의하면, 발광부에서 수광부로 전송되는 광신호의 초점을 가시대역의 광신호를 이용해 조절하고, 엘리베이터의 내부를 촬영한 감시영상을 비가시 대역의 광신호로 전송할 수 있도록 한 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법을 실현할 수 있다.As described above, according to the present invention, the focus of the optical signal transmitted from the light emitting unit to the light receiving unit is adjusted using an optical signal in the visible band, and the surveillance image photographing the interior of the elevator can be transmitted as an optical signal in the invisible band. One elevator monitoring system and its transmission optical focus adjustment method can be realized.
본 발명은 엘리베이터의 내부를 촬영한 감시영상을 비가시 대역의 광신호로 전송하고, 발광부에서 수광부로 전송되는 광신호의 초점을 가시대역의 광신호를 이용해 조절하는 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법에 적용할 수 있다.The present invention transmits a surveillance image of the interior of the elevator as an optical signal in the invisible band, and the elevator monitoring system and the transmission light for adjusting the focus of the optical signal transmitted from the light emitting unit to the light receiving unit using the optical signal of the visible band Applicable to the focus adjustment method.

Claims (13)

  1. 엘리베이터의 내부를 촬영한 감시 영상을 광신호로 전송하는 엘리베이터 감시 시스템에 있어서, In the elevator monitoring system for transmitting a surveillance image of the interior of the elevator as an optical signal,
    가시 대역의 광신호를 발광하는 제1 발광부와 비가시 대역의 광신호를 발광하는 제2 발광부를 구비하는 광송신부; An optical transmitter having a first light emitting unit for emitting an optical signal in a visible band and a second light emitting unit for emitting an optical signal in an invisible band;
    상기 광송신부를 고정시키는 고정대; Fixing stand for fixing the optical transmitter;
    상기 고정대의 각 모서리에 삽입되어 상기 광송신부를 고정시키며, 상기 제1 발광부로부터 발광된 가시대역 광신호의 초점을 조절하기 위한 하나 이상의 조절용 볼트; 및 One or more adjustment bolts inserted into each corner of the holder to fix the optical transmitter and adjust focus of the visible band optical signal emitted from the first light emitting unit; And
    상기 가시대역의 광신호를 수신하거나 상기 비가시 대역의 광신호를 수신하는 광수신부An optical receiver configured to receive the optical signal in the visible band or the optical signal in the invisible band
    를 포함하는 엘리베이터 감시 시스템.Elevator monitoring system comprising a.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 광송신부와 상기 고정대는 서로 대응되게 각 모서리에 삽입구가 형성되고, 상기 조절용 볼트가 상기 삽입구에 나사 결합되면 상기 광송신부가 상기 고정대에 고정된 것을 특징으로 하는 엘리베이터 감시 시스템.The optical transmission unit and the holder is formed in each corner corresponding to each other is formed, the elevator monitoring system, characterized in that the optical transmission unit is fixed to the holder when the adjusting bolt is screwed into the insertion hole.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 조절용 볼트는 상기 가시대역 광신호의 초점을 상, 하, 좌, 우로 조절하기 위한 상측 볼트와, 하측 볼트, 좌측 볼트 및 우측 볼트를 포함하는 것을 특징으로 하는 엘리베이터 감시 시스템.The adjustment bolt includes an upper bolt for adjusting the focus of the visible light signal up, down, left, right, and lower bolts, left bolts and right bolts.
  4. 청구항 3에 있어서,The method according to claim 3,
    상기 좌측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 좌측으로 조절되고, 상기 좌측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 우측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템.And when the left bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the left, and when the left bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted to the right.
  5. 청구항 3에 있어서,The method according to claim 3,
    상기 우측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 우측으로 조절되고, 상기 우측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 좌측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템.And when the right bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the right, and when the right bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted to the left.
  6. 청구항 3에 있어서,The method according to claim 3,
    상기 상측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 상측으로 조절되고, 상기 상측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 하측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템.And when the upper bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted downward.
  7. 청구항 3에 있어서,The method according to claim 3,
    상기 하측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 하측으로 조절되고, 상기 하측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 상측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템.And when the lower bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted upward.
  8. 청구항 1에 있어서,The method according to claim 1,
    상기 고정대의 하단부에 강력 자석이 구비되고, 상기 광송신부가 상기 강력 자석의 자력에 의해 고정 브라켓에 고정된 것을 특징으로 하는 엘리베이터 감시 시스템.A strong magnet is provided at a lower end of the fixing unit, and the optical transmission unit is fixed to the fixing bracket by the magnetic force of the strong magnet.
  9. 가시대역 광신호를 발광하는 제1 발광부와 비가시대역 광신호를 발광하는 제2 발광부를 구비하는 광송신부가 고정대에 조절용 볼트에 의해 고정되고, 상기 광신호를 수신하는 수광부, 조작부 및 제어부를 포함하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법으로서,An optical transmitting unit having a first light emitting unit for emitting a visible band optical signal and a second light emitting unit for emitting an invisible band optical signal is fixed to a holder by a bolt for adjustment, and receives a light receiving unit, an operation unit and a control unit for receiving the optical signal. As a transmission optical focus adjustment method of an elevator monitoring system comprising,
    (a) 상기 조작부로부터 상기 광신호의 초점조절 명령이 상기 제어부에 입력되는 단계;(a) inputting a focus control command of the optical signal to the controller from the manipulation unit;
    (b) 상기 제어부가 상기 제1 발광부를 작동시킴에 따라 상기 제1 발광부로부터 가시대역 광신호가 상기 수광부에 전송되는 단계;(b) transmitting a visible light signal from the first light emitter to the light receiver as the controller operates the first light emitter;
    (c) 상기 조절용 볼트에 의해 상기 가시대역 광신호의 초점이 조절되는 단계; 및(c) adjusting the focus of the visible band optical signal by the adjusting bolt; And
    (d) 상기 조작부로부터 상기 광신호의 초점조절 완료명령이 입력되면, 상기 제어부가 상기 제1 발광부의 동작을 종료시키는 단계;(d) when the focus control completion command of the optical signal is input from the operation unit, terminating the operation of the first light emitting unit;
    를 포함하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법.Transmission optical focus adjustment method of the elevator monitoring system comprising a.
  10. 청구항 9에 있어서,The method according to claim 9,
    상기 (c) 단계는, 상기 조절용 볼트의 좌측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 좌측으로 조절되고, 상기 좌측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 우측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법.In the step (c), when the left bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the left, and when the left bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted to the right. Method for adjusting the transmission optical focus of the elevator monitoring system, characterized in that.
  11. 청구항 9에 있어서,The method according to claim 9,
    상기 (c) 단계는, 상기 조절용 볼트의 우측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 우측으로 조절되고, 상기 우측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 좌측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법.In the step (c), when the right bolt of the adjusting bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted to the right, and when the right bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted to the left. Method for adjusting the transmission optical focus of the elevator monitoring system, characterized in that.
  12. 청구항 9에 있어서,The method according to claim 9,
    상기 (c) 단계는, 상기 조절용 볼트의 상측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 상측으로 조절되고, 상기 상측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 하측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법.In the step (c), when the upper bolt of the adjustment bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted upward, and when the upper bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted downward. Method for adjusting the transmission optical focus of the elevator monitoring system, characterized in that.
  13. 청구항 9에 있어서,The method according to claim 9,
    상기 (c) 단계는, 상기 조절용 볼트의 하측 볼트가 삽입구에 삽입되면 상기 가시대역 광신호의 초점이 하측으로 조절되고, 상기 하측 볼트가 삽입구에서 인출되면 상기 가시대역 광신호의 초점이 상측으로 조절되는 것을 특징으로 하는 엘리베이터 감시 시스템의 전송 광 초점 조절 방법.In the step (c), when the lower bolt of the adjustment bolt is inserted into the insertion hole, the focus of the visible band optical signal is adjusted downward, and when the lower bolt is drawn out of the insertion hole, the focus of the visible band optical signal is adjusted upward. Method for adjusting the transmission optical focus of the elevator monitoring system, characterized in that.
PCT/KR2013/001367 2012-12-20 2013-02-21 Elevator surveillance system and method for adjusting focus of transmitted light thereof WO2014098317A1 (en)

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CN105438934A (en) * 2015-12-17 2016-03-30 华南理工大学 Information interaction type elevator based on visible light communication

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