KR20220057266A - Real time monitoring system using emergency broadcasting reception equipment of fm-dmb for railway underground section - Google Patents

Real time monitoring system using emergency broadcasting reception equipment of fm-dmb for railway underground section Download PDF

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KR20220057266A
KR20220057266A KR1020200142355A KR20200142355A KR20220057266A KR 20220057266 A KR20220057266 A KR 20220057266A KR 1020200142355 A KR1020200142355 A KR 1020200142355A KR 20200142355 A KR20200142355 A KR 20200142355A KR 20220057266 A KR20220057266 A KR 20220057266A
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이순정
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주식회사 크리소스
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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    • GPHYSICS
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    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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    • H04H20/44Arrangements characterised by circuits or components specially adapted for broadcast
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    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
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    • H04H20/59Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
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    • H04H20/62Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/27Server based end-user applications
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
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Abstract

The present invention relates to a real-time cabin monitoring system using an FM-DMB disaster broadcasting reception facility for a railway underground section, which comprises: an electric vehicle; a main relay device installed in an electric vehicle monitoring operation center for monitoring an operation of the electric vehicle to transmit DMB signals, FM signals, and cabin monitoring control signals, and to receive a cabin image; an optical signal distributor for plurally distributing the DMB signals, the FM signals, and the cabin monitoring control signals; an optical/electric conversion amplifier for combining the DMB signals, the FM signals, and the cabin monitoring control signals to transmit the same to the electric vehicle through a leaky coaxial cable or to receive a cabin image signal from the electric vehicle; and a data and RF conversion repeater installed inside a tunnel to amplify the DMB signals and the FM signals and to transmit the same to the electric vehicle, and amplifying the RF signals received from an onboard device of an electric vehicle cabin to transmit the same to the optical/electrical conversion amplifier. Accordingly, maintenance and construction costs can be saved by sharing, as a communication facility, an existing leaky coaxial cable constructed to listen to FM radio and DMB broadcasting.

Description

철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템{REAL TIME MONITORING SYSTEM USING EMERGENCY BROADCASTING RECEPTION EQUIPMENT OF FM-DMB FOR RAILWAY UNDERGROUND SECTION}REAL TIME MONITORING SYSTEM USING EMERGENCY BROADCASTING RECEPTION EQUIPMENT OF FM-DMB FOR RAILWAY UNDERGROUND SECTION

본 발명은 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템에 관한 것으로써, 더욱 상세하게는 재난방송 수신설비에 객실감시설비 기능을 추가하고 지하구간인 터널 내부에 설치되는 누설동축케이블을 공용으로 사용하여 FM, DMB 신호 중계 및 객실 영상 신호를 전송함으로써 관리 비용 및 구축 비용을 절감할 수 있는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템에 관한 것이다.The present invention relates to a cabin real-time monitoring system using an FM-DMB disaster broadcast reception facility for an underground railway section, and more particularly, to a disaster broadcast reception facility by adding a cabin monitoring facility function and leaking installed inside a tunnel that is an underground section It relates to a cabin real-time monitoring system using an FM-DMB disaster broadcasting reception facility for an underground section of a railway that can reduce management and construction costs by transmitting FM and DMB signal relays and cabin video signals using a common coaxial cable.

종래에는 객실감시설비가 전동차량객실 내의 승객 안전을 위한 객실감시영상을 촬영하여 전동차량 내에서 비상상황 발생시 긴급 조치할 수 있도록 무선전송 가능하게 별도로 설치된 LTE-R 방식의 무선송수신 장치를 통해 해당 객실감시영상을 통합사령실로 전송하고 있다.Conventionally, the cabin monitoring facility records a video of the cabin monitoring for the safety of passengers in the passenger compartment of the electric vehicle and uses the LTE-R method wireless transmission/reception device separately installed so that emergency measures can be taken in the event of an emergency in the electric vehicle. The surveillance video is being transmitted to the integrated command room.

또한, 지하 공간에서도 FM 라디오나 DMB 방송을 청취할 수 있도록 외부로부터 신호를 수신하여 내부 지하공간에 신호를 중계하는 설비로써 대합실과 같은 내부지하공간은 안테나를 설치하여 중계하고 철도전동차량이 다니는 터널의 경우는 누설동축케이블을 설치하여 신호를 중계한다.In addition, it is a facility that receives signals from the outside and relays the signals to the internal underground space so that FM radio or DMB broadcasting can be listened to in the underground space. In this case, a leaky coaxial cable is installed to relay the signal.

하지만, 종래 LTE-R 방식의 무선송수신 장치는 이동통신방식의 특성상 영상전용 대역폭 상시 보장이 불가능하고, 통신설비를 구축하는데 초고가의 비용이 소요되는 문제점이 있다.However, the conventional LTE-R type wireless transmission/reception device has problems in that it is impossible to always guarantee a video-only bandwidth due to the characteristics of the mobile communication method, and it is very expensive to construct communication facilities.

또한, 현재까지 상술한 객실감시설비에서 촬영한 객실감시영상을 터널에서 FM 라디오와 DMB 방송을 송신하기 위해 이미 구축된 재난방송 수신설비와 결합하여 송출하는 경우는 없었다.In addition, there has been no case of transmitting the room monitoring image captured by the above-described room monitoring facility in combination with the disaster broadcast receiving facility already established to transmit FM radio and DMB broadcast in the tunnel.

대한민국 등록특허공보 제10-1940633호(2019. 01. 15)Republic of Korea Patent Publication No. 10-1940633 (Jan. 15, 2019)

상술한 문제점을 해결하기 위해 본 발명은 재난방송 수신설비에 객실감시설비 기능을 추가하고 지하구간인 터널 내부에 설치되는 누설동축케이블을 공용으로 사용하여 객실 영상 신호를 전송할 수 있는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템을 제공하는데 목적이 있다.In order to solve the above problems, the present invention adds a room monitoring facility function to the disaster broadcast receiving facility and uses a leaky coaxial cable installed inside the tunnel, which is an underground section, in common to transmit the video signal of the guest room. -The purpose of this is to provide a real-time monitoring system for rooms using the DMB disaster broadcasting reception facility.

상술한 목적을 달성하기 위해 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템은 전동차량; 상기 전동차량 운행을 모니터링하는 전동차량 모니터링 운영센터에 설치되어 DMB 신호, FM 신호 및 객실감시 제어신호를 송신하고 객실 영상을 수신하는 주중계장치; 상기 DMB 신호, FM 신호 및 객실감시 제어신호를 복수로 분배하는 광신호 분배기; 상기 DMB 신호, FM 신호 및 객실감시 제어신호를 결합하여 누설동축케이블을 통하여 전동차량에 송출하거나, 상기 전동차량으로부터 객실영상 신호를 수신하는 광/전 변환 증폭기; 터널 내부에 설치되어 상기 DMB 신호와 FM 신호를 증폭하여 전동차량으로 송신하고, 전동차량 객실의 차상장치로부터 수신한 객실영상 RF신호를 증폭하여 광/전 변환 증폭기로 송신하는 DATA & RF 변환중계기;를 포함하는 것을 특징으로 한다.In order to achieve the above object, the cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground railway section according to the present invention includes an electric vehicle; a main repeater installed in an electric vehicle monitoring operation center that monitors the operation of the electric vehicle to transmit a DMB signal, an FM signal, and a cabin monitoring control signal, and to receive an image of the cabin; an optical signal distributor for distributing a plurality of the DMB signal, the FM signal and the room monitoring control signal; an optical/electrical conversion amplifier that combines the DMB signal, the FM signal, and the cabin monitoring control signal and transmits it to the electric vehicle through a leaky coaxial cable, or receives the cabin image signal from the electric vehicle; DATA & RF conversion repeater installed inside the tunnel to amplify the DMB signal and FM signal and transmit it to the electric vehicle, amplify the cabin image RF signal received from the on-board device of the electric vehicle cabin and transmit it to the optical/electrical conversion amplifier; It is characterized in that it includes.

바람직하게, 상술한 목적을 달성하기 위해 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 주중계장치는 DMB 수신안테나로부터 DMB신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환하는 DMB 수신기; FM 수신안테나로부터 FM신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환하는 FM 수신기; 상기 FM 수신기 및 DMB 수신기로부터 수신한 디지털 형태의 전기신호를 수신하여 광신호로 변환하는 제1 광송수신기; 및 객실에 설치된 상기 CCTV에 영상 데이터를 요청하여 표시부에 표시되도록 하고, 특정 CCTV가 촬영하는 영상을 확대하거나, 촬영위치를 변경할 수 있는 객실감시 제어신호를 생성하는 객실감시제어부;를 포함하는 것을 특징으로 한다.Preferably, in order to achieve the above object, the main repeater of the cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground section of the railway according to the present invention receives the DMB signal (RF signal) from the DMB reception antenna and receives a low noise level. After amplification, a DMB receiver that converts it into a digital signal; an FM receiver that receives an FM signal (RF signal) from an FM reception antenna, amplifies low noise, and converts it into a digital signal; a first optical transmitter/receiver for receiving the electric signal in digital form received from the FM receiver and the DMB receiver and converting it into an optical signal; and a room monitoring control unit that requests the video data from the CCTV installed in the guest room to display it on the display unit, and generates a room monitoring control signal capable of magnifying an image captured by a specific CCTV or changing a photographing location; do it with

더욱 바람직하게, 상술한 목적을 달성하기 위해 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 광/전 변환 증폭기는 수신한 디지털형태의 FM 또는 DMB 광신호를 전기신호로 변환하여 상기 전동차량에 전달하거나, 해당 전동차량의 CCTV가 촬영한 객실영상 데이터를 광신호로 변환하여 상기 주중계장치로 전송하는 제2 광송수신기; 상기 제2 광송수신기로부터 수신한 디지털형태의 DMB 전기신호를 RF신호로 변환하는 DMB 송신기; 상기 제2 광송수신기로부터 수신한 디지털형태의 FM 전기신호를 RF신호로 변환하는 FM 송신기; 상기 DMB 송신기로부터 수신한 DMB RF 신호를 증폭하는 DMB 증폭기; 상기 FM 송신기로부터 수신한 FM RF 신호를 증폭하는 FM 증폭기; 객실의 차상장치로부터 수신한 객실영상 RF신호를 디지털 신호로 변환하여 상기 제2 광송수신기로 전송하는 DATA & RF 변환기; 및 상기 DMB 증폭기 및 상기 FM 증폭기로부터 수신한 FM RF 신호와 DMB RF 신호를 결합하여 하나의 출력포트로 출력하는 다중대역결합기;를 포함하는 것을 특징으로 한다.More preferably, in order to achieve the above object, the optical/electrical conversion amplifier of the cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground section of the railway according to the present invention receives the received digital FM or DMB optical signal. a second optical transceiver for converting into an electric signal and transmitting it to the electric vehicle, or converting the room image data captured by the CCTV of the electric vehicle into an optical signal and transmitting it to the main repeater; a DMB transmitter for converting the digital DMB electrical signal received from the second optical transceiver into an RF signal; an FM transmitter for converting the digital FM electrical signal received from the second optical transceiver into an RF signal; a DMB amplifier for amplifying the DMB RF signal received from the DMB transmitter; an FM amplifier for amplifying the FM RF signal received from the FM transmitter; a DATA & RF converter that converts the cabin image RF signal received from the on-board device of the cabin into a digital signal and transmits it to the second optical transceiver; and a multi-band combiner for combining the DMB amplifier and the FM RF signal received from the FM amplifier and the DMB RF signal to output one output port.

본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템은 통신설비를 종래 지하구간에서 FM라디오와 DMB 방속을 청취할 수 있도록 구축된 누설동축케이블을 공용으로 사용함으로 관리 비용 및 구축 비용을 절감할 수 있는 효과가 있다.The cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground railway section according to the present invention manages the communication facility by using the leaky coaxial cable constructed to listen to the FM radio and DMB broadcast in the conventional underground section. It has the effect of reducing cost and construction cost.

도 1은 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템 도면이다.
도 2는 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 블록도면이다.
도 3은 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 상세도면이다.
1 is a diagram of a room real-time monitoring system using an FM-DMB disaster broadcasting reception facility for an underground railway section according to the present invention.
2 is a block diagram of a room real-time monitoring system using the FM-DMB disaster broadcasting reception facility for an underground railway section according to the present invention.
3 is a detailed view of a room real-time monitoring system using the FM-DMB disaster broadcasting reception facility for an underground railway section according to the present invention.

본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정하여 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가 장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so they can be substituted at the time of the present application It should be understood that various equivalents and modifications may exist.

이하, 첨부된 도면을 참조하여 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템에 대해 설명한다.Hereinafter, a cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for an underground railway section according to the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 구성도 이다.1 is a block diagram of a cabin real-time monitoring system using an FM-DMB disaster broadcasting reception facility for an underground railway section according to the present invention.

도 1에 도시된 바와 같이 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템은 주중계장치(100), 광신호 분배기(200), 광/전 변환 증폭기(300), DATA & RF 변환중계기(400), 및 전동차(500)를 포함한다.As shown in FIG. 1, the cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground section of the railway is a main repeater 100, an optical signal distributor 200, an optical/electrical conversion amplifier 300, DATA & It includes an RF conversion repeater 400 , and a train 500 .

도 2 및 도 3을 참조하여 본 발명에 따른 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템의 구성에 대해 더욱 상세히 설명한다.The configuration of the cabin real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground railway section according to the present invention will be described in more detail with reference to FIGS. 2 and 3 .

상기 주중계장치(100)는 전동차량 운행을 모니터링하는 전동차량 모니터링 운영센터 등에 설치되어 재난방송수신설비의 FM 수신안테나 또는 DMB 수신안테나를 통해 수신한 방송신호를 상기 광신호 분배기(200) 또는 광/전 변환증폭기(300)로 광케이블을 이용하여 전송한다.The main repeater 100 is installed in an electric vehicle monitoring operation center that monitors the operation of an electric vehicle and transmits a broadcast signal received through an FM receiving antenna or a DMB receiving antenna of a disaster broadcasting receiving facility to the optical signal distributor 200 or optical /Transmits to the conversion amplifier 300 using an optical cable.

도 2에 도시된 바와 같이 상기 주중계장치(100)는 DMB 수신기(110), FM 수신기(120), 제1 광송수신기(130), 및 객실감시제어부(140)를 포함한다.As shown in FIG. 2 , the main repeater 100 includes a DMB receiver 110 , an FM receiver 120 , a first optical transmitter/receiver 130 , and a cabin monitoring control unit 140 .

상기 DMB 수신기(110)는 상기 DMB 수신안테나로부터 DMB신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환한다.The DMB receiver 110 receives the DMB signal (RF signal) from the DMB reception antenna, amplifies the low noise, and converts it into a digital signal.

상기 FM 수신기(120)는 상기 FM 수신안테나로부터 FM신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환한다.The FM receiver 120 receives the FM signal (RF signal) from the FM reception antenna, amplifies the low noise, and converts it into a digital signal.

상기 제1 광송수신기(130)는 상기 FM 수신기(120) 및 DMB 수신기(110)로부터 수신한 디지털 형태의 전기신호를 수신하여 광신호로 변환한다.The first optical transceiver 130 receives the electric signal in digital form received from the FM receiver 120 and the DMB receiver 110 and converts it into an optical signal.

또한, 상기 제1 광송수신기(130)는 상기 광/전 변환증폭기(300)로부터 수신한 객실영상 DATA를 전기신호로 변환하여 상기 객실감시제어부(140)로 전송한다.In addition, the first optical transceiver 130 converts the room image data received from the optical/electric conversion amplifier 300 into an electrical signal and transmits it to the room monitoring control unit 140 .

상기 객실감시제어부(140)는 객실에 설치된 CCTV에 촬영정보를 요청하거나, 특정 CCTV가 촬영하는 영상을 확대하거나, 촬영위치를 변경할 수 있는 객실감시 제어신호를 생성한다.The room monitoring control unit 140 generates a room monitoring control signal capable of requesting shooting information from the CCTV installed in the guest room, enlarging an image captured by a specific CCTV, or changing the shooting location.

또한, 상기 객실감시제어부(140)는 CCTV에 영상 데이터를 요청하여 디스플레이부, 또는 표시부에 표기되도록할 수도 있다.In addition, the room monitoring and control unit 140 may request the video data from the CCTV to be displayed on the display unit or the display unit.

상기 광신호 분배기(200)는 상기 DMB 수신기(110)의 DMB 신호, FM 수신기(120)의 FM 신호, 또는 상기 객실감시제어부(140)의 객실감시 제어신호를 복수의 광/전 변환 증폭기(300)로 분배한다.The optical signal splitter 200 transmits the DMB signal of the DMB receiver 110, the FM signal of the FM receiver 120, or the cabin monitoring control signal of the cabin monitoring control unit 140 to a plurality of optical/electrical conversion amplifiers (300). ) is distributed as

또한, 상기 광신호 분배기(200)는 상기 광/전 변환 증폭기(300)로부터 수신한 객실영상 데이터에 대한 디지털의 광신호를 주중계장치(100)로 전송한다.In addition, the optical signal distributor 200 transmits a digital optical signal for the room image data received from the optical/electric conversion amplifier 300 to the main repeater 100 .

상기 광/전 변환 증폭기(300)는 상기 주중계장치(100) 또는 광신호 분배기(200)로부터 수신된 디지털형태의 광신호를 수신하여 RF신호로 변환 및 증폭한다.The optical/electrical conversion amplifier 300 receives the digital optical signal received from the main repeater 100 or the optical signal splitter 200, converts it into an RF signal, and amplifies it.

또한 상기 광/전 변환 증폭기(300)는 터널 또는 지하공간에 RF신호를 누설동축케이블(케이블안테나)을 통하여 송출하기 위한 증폭장치이다.In addition, the optical/electric conversion amplifier 300 is an amplifying device for transmitting an RF signal to a tunnel or underground space through a leaky coaxial cable (cable antenna).

보다 구체적으로, 도 2에 도시된 바와 같이 상기 광/전 변환 증폭기(300)는 제2 광송수신기(310), DMB 송신기(320), FM 송신기(330), DMB 증폭기(340), FM 증폭기(350), DATA & RF 변환기(360), 및 다중대역결합기(370)를 포함한다.More specifically, as shown in FIG. 2, the optical/electrical conversion amplifier 300 includes a second optical transceiver 310, a DMB transmitter 320, an FM transmitter 330, a DMB amplifier 340, and an FM amplifier ( 350), a DATA & RF converter 360, and a multi-band combiner 370.

상기 제2 광송수신기(310)는 수신한 디지털형태의 FM 또는 DMB 광신호를 전기신호로 변환하여 상기 MB 송신기(320) 또는 FM 송신기(330)로 전달하거나, 반대로 전동차량 객실에 설치된 CCTV가 촬영한 객실영상 데이터를 광신호로 변환하여 상기 주중계장치(100)로 전송한다.The second optical transmitter 310 converts the received digital FM or DMB optical signal into an electrical signal and transmits it to the MB transmitter 320 or FM transmitter 330, or, conversely, a CCTV installed in the passenger compartment of the electric vehicle is photographed One room image data is converted into an optical signal and transmitted to the main repeater 100 .

상기 DMB 송신기(320)는 상기 제2 광송수신기(310)로부터 수신한 디지털형태의 DMB 전기신호를 RF신호로 변환한다.The DMB transmitter 320 converts the digital DMB electrical signal received from the second optical transceiver 310 into an RF signal.

상기 FM 송신기(330)는 상기 제2 광송수신기(310)로부터 수신한 디지털형태의 FM 전기신호를 RF신호로 변환한다.The FM transmitter 330 converts the digital FM electrical signal received from the second optical transceiver 310 into an RF signal.

상기 DMB 증폭기(340)는 상기 DMB 송신기(320)로부터 수신한 DMB RF 신호를 증폭한다.The DMB amplifier 340 amplifies the DMB RF signal received from the DMB transmitter 320 .

마찬가지로 상기 FM 증폭기(350)는 상기 FM 송신기(330)로부터 수신한 FM RF 신호를 증폭한다.Similarly, the FM amplifier 350 amplifies the FM RF signal received from the FM transmitter 330 .

상기 DATA & RF 변환기(360)는 객실의 차상장치로부터 수신한 객실영상 RF신호를 디지털 신호로 변환하여 상기 제2 광송수신기(310)로 전송하는 구성으로써 상기 광/전 변환 증폭기(300)에 모듈형태로 추가 장착될 수 있다.The DATA & RF converter 360 converts the cabin image RF signal received from the on-board device of the cabin into a digital signal and transmits it to the second optical transmitter/receiver 310. The module to the optical/electric conversion amplifier 300 It can be additionally installed in the form.

상기 다중대역결합기(370)는 상기 DMB 증폭기(340) 및 상기 FM 증폭기(350)로부터 수신한 FM RF 신호와 DMB RF 신호를 결합하여 하나의 출력포트로 출력한다.The multi-band combiner 370 combines the FM RF signal and the DMB RF signal received from the DMB amplifier 340 and the FM amplifier 350 and outputs them to one output port.

상기 DATA & RF 변환중계기(400)는 터널 내부에 설치되어 전동차량 객실의 차상장치로부터 수신한 객실영상 RF신호를 증폭하여 상기 DATA & RF 변환기(360)로 전송 한다.The DATA & RF conversion repeater 400 is installed inside the tunnel to amplify the cabin image RF signal received from the on-board device of the electric vehicle cabin and transmit it to the DATA & RF converter 360 .

상기 DATA & RF 변환중계기(400)는 신호 분리부(410), 상기 밴드 패스 필터(420), 신호 변환부(430), 및 CPU(440)를 포함한다.The DATA & RF conversion repeater 400 includes a signal separation unit 410 , the band pass filter 420 , a signal conversion unit 430 , and a CPU 440 .

도 3에 도시된 바와 같이 상기 신호 분리부(410)는 2.4GHz와 FM+DMB+열차방호 신호를 분리시키는 역할을 한다.As shown in Figure 3, the signal separation unit 410 serves to separate the 2.4 GHz and FM + DMB + train protection signal.

상기 밴드 패스 필터(420)는 광/전 변환 증폭기(300)와 연결되는 누설 동축 케이블 안테나로부터 입력되는 2.4GHz 주파수만을 걸러낸다.The band pass filter 420 filters only the 2.4 GHz frequency input from the leakage coaxial cable antenna connected to the optical/electric conversion amplifier 300 .

상기 신호 변환부(430)는 누설동축케이블 안테나로부터 입력되는 RF 신호를 데이터를 변경하여 CPU에 입력한다.The signal conversion unit 430 changes the data of the RF signal input from the leaky coaxial cable antenna and inputs it to the CPU.

상기 CPU(440)는 상기 신호 변환부(430)에서 입력되는 데이터를 가공 및 편집하여 다시 상기 신호 변환부(430)로 입력시켜 해당 데이터를 RF 신호로 변환하여 송출한다.The CPU 440 processes and edits data input from the signal converter 430 , and then inputs the data back to the signal converter 430 , converts the data into an RF signal, and transmits it.

상술한 구성을 갖는 상기 DATA & RF 변환중계기(400)는 2.4GHz 중계기 역할을 하며 누설동축케이블 안테나 등의 손실로 인한 데이터를 광/전 변환 증폭기(300)에 전달하기 위해 재생 작업을 수행한다.The DATA & RF conversion repeater 400 having the above configuration acts as a 2.4 GHz repeater and performs a reproduction operation in order to transmit data due to a loss such as a leaky coaxial cable antenna to the optical/electrical conversion amplifier 300 .

상기 전동차량(500)는 CCTV(510), NVR(Network Video Recorder:520), 및 차상장치(530)를 포함한다. The electric vehicle 500 includes a CCTV 510 , a Network Video Recorder (NVR: 520 ), and an on-board device 530 .

상기 CCTV(510)는 상기 전동차량(500) 객실 내에 복수개가 상이한 IP가 설정된 후, 설치되어 객실 내부를 촬영하고, 상기 NVR(520)은 상기 CCTV(510)와 연결되어, 해당 CCTV(510)가 촬영한 영상 데이터를 저장하며, 상기 차상장치(530)는 상기 영상 데이터를 RF 신호로 변환하여 상기 DATA&RF 변환 중계기(400)로 송신한다.The CCTV 510 is installed after a plurality of different IPs are set in the cabin of the electric vehicle 500 to photograph the interior of the cabin, and the NVR 520 is connected to the CCTV 510 and the corresponding CCTV 510 stores the image data photographed by , and the on-vehicle device 530 converts the image data into an RF signal and transmits the converted image data to the DATA&RF conversion repeater 400 .

복수의 상기 CCTV(510)는 상이한 IP로 설정되어, 지정된 IP의 영상 데이터를 수집하여 감시할 수 있다. The plurality of CCTVs 510 may be set to different IPs to collect and monitor video data of a designated IP.

상술한 구성을 갖는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템에 의한 객실 감시과정에 대해 설명한다.A cabin monitoring process by the cabin real-time monitoring system using the FM-DMB disaster broadcast reception facility for the underground railway section having the above-described configuration will be described.

먼저, 상기 전동차량(500)의 CCTV(510)는 객실 내부를 촬영하여 영상 데이터를 생성하고, 생성된 영상 데이터는 상기 NVR(520)에 저장된다.First, the CCTV 510 of the electric vehicle 500 generates image data by photographing the inside of the cabin, and the generated image data is stored in the NVR 520 .

상기 차상장치(530)는 NVR(520)에 저장된 전동차량 객실의 영상 데이터를 RF 신호로 변환하여 상기 DATA & RF 변환중계기(400)로 송신한다.The on-board device 530 converts the image data of the electric vehicle cabin stored in the NVR 520 into an RF signal and transmits it to the DATA & RF conversion repeater 400 .

상기 DATA & RF 변환중계기(400)는 상기 차상장치(530)으로부터 수신된 객실영상 RF 신호를 증폭하여 상기 광/전 변환 증폭기(300)의 DATA & RF 변환기(360)로 전송한다.The DATA & RF conversion repeater 400 amplifies the cabin image RF signal received from the on-board device 530 and transmits it to the DATA & RF converter 360 of the optical/electrical conversion amplifier 300 .

상기 DATA & RF 변환기(360)는 상기 차상장치(530)으로부터 수신되어 증폭된 객실의 영상 RF신호를 디지털 신호로 변환하여 상기 제2 광송수신기(310)로 전송한다.The DATA & RF converter 360 converts the amplified image RF signal of the cabin received from the on-board device 530 into a digital signal and transmits it to the second optical transceiver 310 .

상기 제2 광송수신기(310)는 객실의 디지털 신호로 변환된 영상신호를 광신호로 변환하여 상기 주중계기(100)로 전송한다.The second optical transceiver 310 converts the video signal converted into the digital signal of the guest room into an optical signal and transmits it to the main repeater 100 .

상기 주중계기(100)의 제1 광송수신기(130)는 상기 제2 광송수신기(310)로부터 수신한 디지털의 영상신호를 전기신호로 변환하여 상기 객실감시 제어부(140)로 전송한다.The first optical transceiver 130 of the main repeater 100 converts the digital image signal received from the second optical transceiver 310 into an electrical signal and transmits it to the room monitoring control unit 140 .

상기 객실감시 제어부(140)는 수신한 영상신호를 디스플레이부 등에 표시하여 모니터링할 수 있게 하거나, 관리자의 제어신호를 입력받아 객실내의 CCTV를 제어할 수도 있다. The room monitoring control unit 140 may display the received video signal on a display unit, etc. to enable monitoring, or may receive a control signal from a manager to control the CCTV in the room.

이상에서는 본 발명에 대한 기술사상을 첨부 도면과 함께 서술하였지만 이는 본 발명의 바람직한 실시 예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 누구나 본 발명의 기술적 사상의 범주를 이탈하지 않는 범위 내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.In the above, the technical idea of the present invention has been described along with the accompanying drawings, but the preferred embodiment of the present invention is exemplarily described and does not limit the present invention. In addition, it is clear that various modifications and imitations are possible without departing from the scope of the technical spirit of the present invention by anyone having ordinary knowledge in the technical field to which the present invention pertains.

100 : 주중계장치
110 : DMB 수신기 120 : FM 수신기
130 : 제1 광송수신기 140 : 객실감시제어부
200 : 광신호 분배기
300 : 광/전 변환 증폭기
310 : 제2 광송수신기 320 : DMB 송신기
330 : FM 송신기 340 : DMB 증폭기
350 : FM 증폭기 360 : DATA & RF 변환기
370 : 다중대역결합기
400 : DATA & RF 변환중계기
410 : 신호 분리부 420 : 밴드 패스 필터
430 : 신호 변환부 440 : CPU
500 : 전동차량
510 : CCTV 520 : NVR
530 : 차상장치
100: main repeater
110: DMB receiver 120: FM receiver
130: first optical transceiver 140: room monitoring control unit
200: optical signal splitter
300: optical/electrical conversion amplifier
310: second optical transceiver 320: DMB transmitter
330: FM transmitter 340: DMB amplifier
350: FM amplifier 360: DATA & RF converter
370: multi-band combiner
400 : DATA & RF conversion repeater
410: signal separation unit 420: band pass filter
430: signal conversion unit 440: CPU
500: electric vehicle
510: CCTV 520: NVR
530: on-board device

Claims (4)

전동차량;
상기 전동차량 운행을 모니터링하는 전동차량 모니터링 운영센터에 설치되어 DMB 신호, FM 신호 및 객실감시 제어신호를 송신하고 객실 영상을 수신하는 주중계장치;
상기 DMB 신호, FM 신호 및 객실감시 제어신호를 복수로 분배하는 광신호 분배기;
상기 DMB 신호, FM 신호 및 객실감시 제어신호를 결합하여 누설동축케이블을 통하여 전동차량에 송출하거나, 상기 전동차량으로부터 객실영상 신호를 수신하는 광/전 변환 증폭기;
터널 내부에 설치되어 상기 DMB 신호와 FM 신호를 증폭하여 전동차량으로 송신하고, 전동차량 객실의 차상장치로부터 수신한 객실영상 RF신호를 증폭하여 광/전 변환 증폭기로 송신하는 DATA & RF 변환중계기;를 포함하는 것을 특징으로 하는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템.
electric vehicle;
a main repeater installed in an electric vehicle monitoring operation center that monitors the operation of the electric vehicle to transmit a DMB signal, an FM signal, and a cabin monitoring control signal and receive an image of the cabin;
an optical signal distributor for distributing a plurality of the DMB signal, the FM signal and the room monitoring control signal;
an optical/electrical conversion amplifier that combines the DMB signal, the FM signal, and the cabin monitoring control signal and transmits it to the electric vehicle through a leaky coaxial cable, or receives the cabin image signal from the electric vehicle;
DATA & RF conversion repeater installed inside the tunnel to amplify the DMB signal and FM signal and transmit it to the electric vehicle, amplify the cabin image RF signal received from the on-board device of the electric vehicle cabin and transmit it to the optical/electrical conversion amplifier; A room real-time monitoring system using the FM-DMB disaster broadcasting reception facility for the underground section of the railway, characterized in that it comprises a.
제 1항에 있어서,
상기 전동차량은
상이한 IP가 할당된 복수의 CCTV는
복수의 상기 CCTV가 촬영한 객실의 영상 데이터를 저장하는 NVR; 및
상기 NVR에 저장된 전동차량 객실의 영상 데이터를 RF 신호로 변환하는 차상장치;를 포함하는 것을 특징으로 하는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템.
The method of claim 1,
The electric vehicle
Multiple CCTVs with different IPs are
NVR for storing the video data of the room taken by the plurality of CCTVs; and
A cabin real-time monitoring system using an FM-DMB disaster broadcasting reception facility for an underground railway section, characterized in that it includes;
제 2항에 있어서,
상기 주중계장치는
DMB 수신안테나로부터 DMB신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환하는 DMB 수신기;
FM 수신안테나로부터 FM신호(RF신호)를 수신하여 저잡음 증폭 후, 디지털 신호로 변환하는 FM 수신기;
상기 FM 수신기 및 DMB 수신기로부터 수신한 디지털 형태의 전기신호를 수신하여 광신호로 변환하는 제1 광송수신기; 및
객실에 설치된 상기 CCTV에 영상 데이터를 요청하여 표시부에 표시되도록 하고, 특정 CCTV가 촬영하는 영상을 확대하거나, 촬영위치를 변경할 수 있는 객실감시 제어신호를 생성하는 객실감시제어부;를 포함하는 것을 특징으로 하는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템.
3. The method of claim 2,
The main repeater is
a DMB receiver that receives the DMB signal (RF signal) from the DMB reception antenna, amplifies the low noise, and converts it into a digital signal;
an FM receiver that receives an FM signal (RF signal) from an FM reception antenna, amplifies low noise, and converts it into a digital signal;
a first optical transmitter/receiver for receiving the electric signal in digital form received from the FM receiver and the DMB receiver and converting it into an optical signal; and
and a guest room monitoring control unit that requests video data from the CCTV installed in the guest room to display it on the display unit, and generates a room monitoring control signal capable of magnifying the video shot by a specific CCTV or changing the shooting location; characterized by comprising: Room real-time monitoring system using FM-DMB disaster broadcasting reception facility for underground sections of railways.
제 3항에 있어서,
상기 광/전 변환 증폭기는
수신한 디지털형태의 FM 또는 DMB 광신호를 전기신호로 변환하여 상기 전동차량에 전달하거나, 해당 전동차량의 CCTV가 촬영한 객실영상 데이터를 광신호로 변환하여 상기 주중계장치로 전송하는 제2 광송수신기;
상기 제2 광송수신기로부터 수신한 디지털형태의 DMB 전기신호를 RF신호로 변환하는 DMB 송신기;
상기 제2 광송수신기로부터 수신한 디지털형태의 FM 전기신호를 RF신호로 변환하는 FM 송신기;
상기 DMB 송신기로부터 수신한 DMB RF 신호를 증폭하는 DMB 증폭기;
상기 FM 송신기로부터 수신한 FM RF 신호를 증폭하는 FM 증폭기;
객실의 차상장치로부터 수신한 객실영상 RF신호를 디지털 신호로 변환하여 상기 제2 광송수신기로 전송하는 DATA & RF 변환기; 및
상기 DMB 증폭기 및 상기 FM 증폭기로부터 수신한 FM RF 신호와 DMB RF 신호를 결합하여 하나의 출력포트로 출력하는 다중대역결합기;를 포함하는 것을 특징으로 하는 철도 지하구간용 FM-DMB 재난방송 수신설비를 이용한 객실 실시간 감시 시스템.
4. The method of claim 3,
The optical/electrical conversion amplifier is
A second optical signal that converts the received digital FM or DMB optical signal into an electric signal and transmits it to the electric vehicle, or converts the cabin image data captured by the CCTV of the electric vehicle into an optical signal and transmits it to the main repeater transceiver;
a DMB transmitter for converting the digital DMB electrical signal received from the second optical transceiver into an RF signal;
an FM transmitter for converting the digital FM electrical signal received from the second optical transceiver into an RF signal;
a DMB amplifier for amplifying the DMB RF signal received from the DMB transmitter;
an FM amplifier for amplifying the FM RF signal received from the FM transmitter;
a DATA & RF converter that converts a cabin image RF signal received from the on-board device of the cabin into a digital signal and transmits it to the second optical transceiver; and
FM-DMB disaster broadcast reception facility for underground railway section comprising a; Room real-time monitoring system used.
KR1020200142355A 2020-10-29 2020-10-29 Real time monitoring system using emergency broadcasting reception equipment of fm-dmb for railway underground section KR102402658B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100035282A (en) * 2008-09-26 2010-04-05 서울특별시도시철도공사 The subway wireless transmitting system using leaky coaxial cable
KR20180107635A (en) * 2017-03-22 2018-10-02 주식회사 에이트 Repeater for fm and dmb
KR101940633B1 (en) 2017-06-30 2019-01-21 (주)에스티와이드 Real time monitoring system for railway vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100035282A (en) * 2008-09-26 2010-04-05 서울특별시도시철도공사 The subway wireless transmitting system using leaky coaxial cable
KR20180107635A (en) * 2017-03-22 2018-10-02 주식회사 에이트 Repeater for fm and dmb
KR101940633B1 (en) 2017-06-30 2019-01-21 (주)에스티와이드 Real time monitoring system for railway vehicles

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