WO2014098317A1 - Système de surveillance d'ascenseur et procédé permettant d'effectuer une mise au point de la lumière transmise de celui-ci - Google Patents

Système de surveillance d'ascenseur et procédé permettant d'effectuer une mise au point de la lumière transmise de celui-ci 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
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Application number
PCT/KR2013/001367
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English (en)
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/fr

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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.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Optical Communication System (AREA)

Abstract

La présente invention concerne un système de surveillance d'ascenseur et un procédé permettant d'effectuer une mise au point de la lumière transmise de celui-ci, le système étant en mesure d'effectuer la mise au point des signaux lumineux transmis en provenance d'un émetteur de lumière jusqu'à un récepteur de lumière par l'utilisation de signaux lumineux de bande visible et en mesure de transmettre, sous la forme de signaux lumineux de bande invisible, des images de surveillance capturées de l'intérieur de l'ascenseur. Selon la présente invention, le système de surveillance d'ascenseur comporte : une unité de transmission de lumière comportant un premier émetteur de lumière à des fins d'émission de signaux lumineux de bande visible et un second émetteur à des fins d'émission de signaux lumineux de bande invisible ; un accessoire de fixation permettant de fixer l'unité de transmission de lumière ; des boulons de réglage permettant de fixer l'unité de transmission de lumière par insertion dans les angles respectifs de l'accessoire de fixation et permettant d'effectuer la mise au point des signaux lumineux à bande visible émis en provenance du premier émetteur de lumière ; et une unité de réception de lumière permettant de recevoir les signaux lumineux de bande visible ou de recevoir les signaux lumineux de bande invisible.
PCT/KR2013/001367 2012-12-20 2013-02-21 Système de surveillance d'ascenseur et procédé permettant d'effectuer une mise au point de la lumière transmise de celui-ci WO2014098317A1 (fr)

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KR10-2012-0149069 2012-12-20
KR1020120149069A KR101435472B1 (ko) 2012-12-20 2012-12-20 엘리베이터 감시 시스템 및 그 전송 광 초점 조절 방법

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105398895A (zh) * 2015-12-17 2016-03-16 华南理工大学 基于可见光通信技术的电梯轿厢信息传输系统
CN105438934A (zh) * 2015-12-17 2016-03-30 华南理工大学 一种基于可见光通信的信息交互式电梯

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US20040007429A1 (en) * 2002-05-03 2004-01-15 Philipp Angst Method of monitoring elevator hoistway doors
KR20060104566A (ko) * 2005-03-31 2006-10-09 한두희 적외선 강제 발광식 주야간 겸용 cctv 카메라
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