KR100757640B1 - Device for monitoring state of elevator based on power line communication - Google Patents

Abstract

An apparatus for monitoring an elevator based on power line communication is provided to prevent an accident through the remote monitor inside the elevator by receiving a state monitor signal and an image signal of the elevator on a remote area. An apparatus for monitoring an elevator based on power line communication includes an elevator controlling and image monitoring device(10), a midterm information collector(20), a central controller(30), and a plurality of power line communication modems(15,25,35). The elevator controlling and image monitoring device(10) is installed on each elevator to photograph an inner situation of the elevator and perform elevator controlling information received from the central controller(30) by using a CCTV(Closed-Circuit TeleVision) installed in the elevator. The midterm information collector(20) transmits monitoring information collected from the elevator controlling and image monitoring device(10) to the central controller(30). The central controller(30) has a device for saving the monitoring information received through the midterm information collector(20) from the elevator controlling and image monitoring device(10), a device for marking, and a device for giving an elevator controlling order. The plurality of power line communication modems(15,25,35) are connected for data communication between the elevator controlling and image monitoring device(10) and the midterm information collector(20) and between the midterm information collector(20) and the central controller(30).

Description

Monitoring equipment for power line communication-based elevators {DEVICE FOR MONITORING STATE OF ELEVATOR BASED ON POWER LINE COMMUNICATION}

1 is a configuration diagram of a monitoring device for a power line communication elevator according to the present invention;

2 is an embodiment of a power line communication modem used in the present invention,

3 is an architecture of one embodiment of the power line communication modem shown in FIG.

4 is an enlarged view illustrating an example of a screen configuration of a display module according to the present invention;

<Description of the symbols for the main parts of the drawings>

10-elevator control and video surveillance,

12-image processor, 13-key controls,

14-controller, 15,25,35-powerline communication modem,

20-intermediate information collector, 22-multiplexer,

30-central manager, 31-image storage module,

32-display module, 33-emergency control module,

34-control module.

The present invention relates to a monitoring apparatus of a power line communication-based elevator capable of monitoring the internal and operational state of the elevator, and more particularly, the internal and operational state of the elevator using power line communication (PLC). The present invention relates to a monitoring apparatus for power line communication-based elevators that enables transmission to the central management office, thereby simplifying the structure and increasing system efficiency.

In recent years, the number of elevators has increased due to the increase in high-rise buildings and the expansion of convenience facilities, and as a result, various accidents caused by obsolete facilities and safety accidents caused by enclosed facilities have been followed. The need to monitor internal situations is increasing.

In general, the elevator monitoring system monitors and controls the operation status of all elevators installed in an apartment complex or building in a management room (control room), thereby configuring the system for the purpose of preventing accidents and efficient operation. This system is designed to digitize analog video signal recorded by CCTV camera by digital recorder and store it in various databases connected by compression and network to prevent safety accidents or to assist in post investigation.

However, CCTV-based remote security monitoring technology, which is conventionally used, is mainly analog-based, but it transmits CCTV video through a digital network, but is limited in image quality, installation, and scalability because it stores analog signals in a remote management room that stores video. have. In addition, the wireless CCTV technology is capable of transmitting low-quality video of 15 to 20 frames per second at a communication speed of 127.5 Kbps. The maximum wireless reach is 2 km, and an additional network access point is needed to extend the communication distance. It is essential.

In addition, IP-DVS (Internet Protocol based Digital Video Security), which is a digital video surveillance system, is commercially available. Previously, it was not possible to simultaneously implement two data on one screen due to the non-interaction between CCTV and elevator monitoring panels. IP-DVS is an integrated product that combines existing CCTV, DVR and elevator monitoring / control systems. It is an integrated security system that overcomes the limitations of video quality, installation, and scalability of existing analog video surveillance facilities. IP-DVS with VDSL technology enables integrated management of the CCTV / CRT monitoring panel for video surveillance and the mosaic / CRT monitoring panel for elevator status control on the computer monitor screen.

In addition, IP-DVS saves high-quality digital video in the form of a file on a PC hard disk so that various videos can be easily backed up through a dedicated player without expensive recording equipment (VHS / DVR). In addition, by using the existing telephone line, there is no cost of piping / wiring of coaxial cable, so new / additional installation is easy, and external connection function enables connection / management even at remote A / S center. .

However, due to VDSL's technology, it cannot be used due to signal attenuation more than 3km away from the telephone station, and there is a cost burden such as paying a certain amount of usage fee per line.

Meanwhile, with the development of communication technology, power line communication technology that can be used as a communication line by using a power line in a home or office instead of ADSL and telephone line, which is expensive to install and maintain, has high speed internet access. : Power line communication refers to a technology that can transmit voice, text data, video, etc. by using an electrical outlet, that is, a high-speed internet connection, and a telephone line. This includes various fields such as high-speed internet communication, internet telephony, home networking, and home banking. It is a technology that can be used up to the existing optical communication cable can be used, the installation cost is low, and has the advantage of almost no communication charges. Moreover, many developments are being made worldwide because they do not need to install costly local area networks (LANs) and can help to bridge the digital divide between farming and fishing villages and island walls.

The present invention has been invented in view of the above-mentioned circumstances, and the structure is made by transmitting a video signal of CCTV that photographs the interior of the elevator and a monitoring signal for monitoring the operation state of the elevator to the remote management room by using a power line communication method. An object of the present invention is to provide a monitoring apparatus for a power line communication-based elevator that is simple and can increase the efficiency of a system.

The monitoring apparatus of the power line communication-based elevator of the present invention for achieving the above object, is installed in each elevator to shoot the internal situation of the elevator using CCTV and perform elevator control information received from the central manager Elevator control and video surveillance;

An intermediate information collector for collecting surveillance information from elevator control and video surveillance devices installed in the plurality of elevators and transmitting the monitoring information to a central manager;

A central manager having means for storing and displaying monitoring information received from the elevator control and video surveillance apparatus via an intermediate information collector and means for issuing elevator control commands; And

The elevator control and video monitoring device and the intermediate information collector, and the power line communication modem is connected to enable the data communication using the intermediate information collector and the central management period power line.

In the above, the elevator control and image monitoring device is a video camera comprising a digital camera capable of shooting the interior of the elevator and an image processor for compressing the video signal photographed by the digital camera for easy transmission and lowering of the elevator For the passenger to operate the key operation unit and the controller for recognizing and transmitting the key signal of the key operation unit, and the power line communication modem for interfacing the input and output signals of the image monitoring unit and the controller to enable power line communication.

In the above, the intermediate information collector comprises a multiplexer for selectively receiving a signal input from each elevator control and video monitoring device, and a power line communication modem for power line communication with the elevator control and video monitoring device and the central manager. It is characterized by.

In addition, in the above, the central management unit performs an emergency control and communication when an emergency situation is recognized in the elevator, an image storage module for storing the image received from the elevator control and video surveillance device, a display module for displaying the received image, the elevator And an emergency control module and a control module for generating elevator control signals.

The power line communication modem may include a modulator for modulating a signal to be transmitted to the outside, a demodulator for demodulating a modulated signal received from the outside, and a combiner for communication coupling with a power line line, wherein the modulator is controlled to transmit. A modulator for modulating a signal at an appropriate frequency, a bandpass filter for removing noise included in the modulated signal and passing only a control signal of a transmission band, and outputting a control signal passed through the bandpass filter to automatically correspond to an impedance of a power line An automatic level controller for controlling the power supply, a buffer for temporarily storing the control signal output from the automatic level controller, and a power amplifier for power amplifying the control signal output from the buffer so as to be remotely connected, and demodulating the demodulation. The amplifier amplifies the signal received through the coupling unit, the increase A band pass filter for removing noise included in the received signal, an intermediate frequency pass filter for lowering the frequency of the received signal passing through the band pass filter to an intermediate frequency band, and controlling from the received signal passing through the intermediate frequency pass filter And a demodulator for demodulating to extract the signal.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a monitoring apparatus for a power line communication elevator according to the present invention.

Each elevator is equipped with an elevator control and video monitoring device 10 is configured to transmit information about the internal situation and operating state of the elevator to the central management office.

To this end, the elevator control and video surveillance apparatus 10 includes an image monitoring unit, which is a means for photographing and transmitting the internal situation of the elevator, and a key operation unit for manipulating the operation of the elevator.

The video monitoring unit is mainly installed on the upper part of the elevator is composed of a digital camera 11 for capturing the internal situation is installed one or more, the video signal photographed by the digital camera 11 is compressed by the image processor 12. The image processor 12 is equipped with an image processing algorithm and compression algorithm that can process 30 frames per second in real time.

On the other hand, the key operation unit 13 is mainly operated in the form of a button for the passenger to move the elevator up and down, such as the number button corresponding to the floor and the door opening and closing buttons, door closing button, emergency button, such as opening and closing A basic operation button is provided, and this key operation unit 13 is connected to the controller 14.

The controller 14 is configured to control the elevator at an urgent moment using control information received from the central manager 30 to be described later, or to perform control commands such as returning to the reference floor, operating and stopping the elevator. In addition, by controlling the operation of the image processor 12 serves to transmit the image information photographed by the digital camera 11 to the central manager 30 through the power line communication modem 15.

The power line communication modem 15 has the same configuration as the power line communication modems 25 and 35 used in the intermediate information collector 20 and the central manager 30, and an example thereof is shown in FIG. A modulator 41 for modulating a control signal to be specified at a specific frequency, a demodulator 42 for demodulating a unique control signal from the received signal, and a power-amplified control signal to be boosted and sent to a power line PCL or a power line And a coupling part 43, which serves as an interface for decompressing and receiving a predetermined signal from the PCL.

In particular, the modulator 41 includes a modulator 411 for modulating a signal to be transmitted at an appropriate frequency, a band pass filter 412 for removing noise included in the modulated control signal and passing only a control signal of a transmission band. Automatic level controller 413 for adjusting the output so that the control signal passed by the band pass filter 412 automatically corresponds to the impedance of the power line (PCL), and temporarily stores the control signal output from the automatic level controller 413 A buffer 414, and a power amplifier 415 for amplifying the power to allow the long-distance transmission of the control signal output from the buffer 414.

The demodulator 42 includes an amplifier 421 for amplifying a signal received through the combiner 43, a band pass filter 422 for removing noise included in the amplified received signal, and the band pass filter ( An intermediate frequency pass filter 423 for lowering the frequency of the received signal passing through the signal 422 to an intermediate frequency band, and a demodulator 424 demodulating the original signal to be detected from the received signal passing through the intermediate frequency pass filter 423. )

In addition, the coupling unit 43 may be a transformer or the like as a device capable of transmitting and receiving signals between the power line communication modem 40 and the power line (PCL).

FIG. 3 shows an architecture for one implementation of the powerline communication modem shown in FIG. 2.

As a power line communication modem, Gelline's XPLC21A PLC chip can be used, which is used in conjunction with the AD9865 chip (mixed-signal front end chip).

XPLC21 is Xeline Co.Ltd's high-performance ultra-high-speed power line communication chip.It is an Ethernet-over-PLC solution that supports data transfer speeds of up to 24Mbps. And Repeater). It also supports SNMP-based network and equipment management function (EMS) to enable remote registration, management, monitoring, and firmware upgrade of all power line modems, and real-time monitoring and control for more stable and reliable high speed. It is to enable communication.

On the other hand, the intermediate information collector 20 is to collect the monitoring information from the elevator control and video monitoring device 10 installed in a plurality of elevators to transmit to the central manager 30, each elevator control and video monitoring device ( 10) a power line communication modem for transmitting elevator control and video surveillance information received through the multiplexer 22 and the multiplexer 22 to the central manager 30 in a power line communication manner so as to selectively receive a signal input from the multiplexer 22; (25) is provided. Preferably, the multiplexer 22 is configured to collect surveillance images from four or sixteen elevator control and monitoring devices 10.

The central manager 30 stores and displays monitoring information received from the elevator control and video surveillance apparatus 10 through the intermediate information collector 20, and controls signals to the elevator control and video surveillance apparatus 10. By transmitting the control commands related to the operation of the elevator was made.

To this end, the central manager 30 is provided with an image storage module 31 that can store the monitoring image of the elevator received from the elevator control and video monitoring device 10, the image storage module 31 for each time zone A retrieval system capable of retrieving surveillance images is desirable. In addition, the image storage module 31 is provided with a display module 32 for displaying the received image, which is preferably configured to monitor a plurality of elevators, for example four or more on one screen.

In addition, the central management unit 30 is provided with an emergency control module 33 for detecting an emergency situation (fire, power outage, assault, etc.) from the surveillance video and an alarm system that can notify the security guards when an emergency occurs. have.

In addition, the central manager 30 is provided with a control module 34 to control the elevator control command to return the elevator to the reference layer in the event of an emergency.

And it is provided with a power line communication modem 35 for performing data communication with the elevator control and video monitoring device 10 and the power line communication method via the intermediate information collector 20, the power line communication modem 35 is Since it is made of the same structure as the power line communication modem 15 described, a detailed description thereof will be omitted.

4 is a view showing an example of a screen configuration of the display module according to the present invention and an enlarged view of main parts thereof.

As shown in the accompanying drawings, an embodiment in which a monitoring screen of nine elevators is displayed on one screen. In addition, on one side of the monitoring screen (in the illustrated example, the top of each monitoring screen), information on the elevator unique number, the current running floor, the driving direction, the door status, the driving status, etc. is displayed as the status monitoring information of the elevator. According to the enlarged screen of the illustrated example, the status monitoring information of the first-floor lobby elevator displayed by the third channel is displayed as # 1, the third floor, UP, CLOSE, and AUTO, where <# 1> is the number of elevators. The 3rd floor is currently operating the 3rd floor, the <UP> is moving upward, the <CLOSE> is the elevator door is closed, and the <AUTO> is the operation mode. Indicates that is set to the autonomous driving mode. That is, the elevator No. 1 currently moves upward on the third floor in the automatic driving mode, and indicates that the door is safely closed.

As described above, the present invention, by using the existing power line to be able to receive the status monitoring signal and video signal of the remote from the remote location does not need additional siege according to the signal transmission is easy to further expand, through the remote monitoring in the elevator Safety accidents can be prevented, and the current state of the elevator can be recognized by the remote management room, which has the advantage of detecting and dealing with the failure and abnormal symptoms at an early stage.

Claims (5)

An elevator control and video surveillance apparatus installed in each elevator to photograph the internal situation of the elevator by using CCTV and to perform elevator control information received from the central manager; An intermediate information collector for collecting surveillance information from elevator control and video surveillance devices installed in the plurality of elevators and transmitting the monitoring information to a central manager; A central manager having means for storing and displaying monitoring information received from the elevator control and video surveillance apparatus via an intermediate information collector and means for issuing elevator control commands; And And a power line communication modem connected to the elevator control and video surveillance device, an intermediate information collector, and a data communication using the intermediate information collector and a central management period power line. The elevator according to claim 1, wherein the elevator control and video surveillance device comprises a digital camera capable of capturing the interior of the elevator, and an image monitoring unit comprising an image processor for compressing an image signal photographed by the digital camera for easy transmission. Characterized in that it consists of a key operation unit for the passenger to operate the control unit for descending and the controller recognizes and transmits the key signal of the key operation unit, and a power line communication modem for interfacing the input and output signals of the image monitoring unit and the controller to enable power line communication. Monitoring device for power line communication based elevator. The method of claim 1, wherein the intermediate information collector comprises a multiplexer for selectively receiving a signal input from each elevator control and video monitoring device, and a power line communication modem for power line communication with the elevator control and video monitoring device and the central manager. Monitoring apparatus for power line communication-based elevator, characterized in that. The method of claim 1, wherein the central manager performs an image control module for storing the image received from the elevator control and video monitoring device, a display module for displaying the received image, emergency control and communication when the emergency situation is recognized in the elevator Elevator of the power line communication-based elevator characterized in that it comprises an emergency control module and a control module for generating an elevator control signal. The power line communication modem according to any one of claims 1 to 4, wherein the power line communication modem comprises a modulator for modulating a signal to be transmitted to the outside, a demodulator for demodulating a modulated signal received from the outside, and a coupling unit for communication coupling with the power line line. The modulator may include a modulator for modulating a control signal to be transmitted at an appropriate frequency, a band pass filter for removing noise included in the modulated signal and passing only a control signal of a transmission band, and a control signal passed through the band pass filter. An automatic level adjuster to adjust the output to automatically correspond to the impedance of the buffer, a buffer for temporarily storing the control signal output from the automatic level regulator, a power amplifier for power amplification for long distance transmission of the control signal output from the buffer The demodulation unit amplifies the signal received through the coupling unit. An amplifier, a band pass filter for removing noise included in the amplified received signal, an intermediate frequency pass filter for lowering a frequency of the received signal passing through the band pass filter to an intermediate frequency band, and the intermediate frequency pass filter Monitoring apparatus for power line communication-based elevator, characterized in that consisting of a demodulator for demodulating to extract the control signal from the received signal.

Images