JPS60183898A - Remote supervisory and controlling equipment - Google Patents

Abstract

PURPOSE:To enable exact supervision and controlling of a condition of equipment to be controlled by a simple structure by reproducing an acting sound of said equipment as an acting sound signal by sending the signal to a supervisory controlling station on a transmission line. CONSTITUTION:Normally an operator is stationed at a supervisory control station 30, and a station 20 to be controlled is unmanned. Therefore a changeover switch S1 is connected on the sound collecting device 24 side and a changeover switch S2 on the sound reproducing device 34 side. The operator operates an operating button on a supervisory control panel 31 to send a control signal to the station 20 to be controlled through a transmitter 32 and a transmission line L. A transmitter 22 of the station 20 to be controlled receives the control signal and actuates equipment 21 to be controlled. The actuating condition is detected, sent as a condition signal from the transmitter 22 to the control station 30 and displayed on the panel 31. Further, the acting sound of the equipment 21 is collected by a sound collecting microphone 24a, sent as an acting sound signal to the control station 30 through an amplifier 24b, a changeover switch S1, and a transmission line L, reproduced in a speaker 34a and informed the operator.

Description

【発明の詳細な説明】 本発明は遠方監視制御装置に関し、特に直接操作するこ
との困難な被監視制御所の監視制御を行なう遠方監視制
御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote monitoring and control device, and more particularly to a remote monitoring and control device that monitors and controls a monitored control station that is difficult to operate directly.

〔発明の技術的背景〕[Technical background of the invention]

第１図は従来の遠方監視制御装置の構成図である。被監
視制御所ｌけ、水中、海底、山奥、砂漠などの操作員が
容易に立入りられない地域に設けられ、例えば発電所に
用いられる７」？ンノ°、パルプ、リレーなどの被監視
制御機器２を、監視制御所３から発せられる制御信号に
より作動させるところである。し／ζがって、操作員が
面接操作して被監視制御機器２を制御することははなは
だ困難である。FIG. 1 is a block diagram of a conventional remote monitoring and control device. A monitored control station is set up in an area that cannot be easily accessed by operators, such as underwater, on the ocean floor, deep in the mountains, or in the desert, and is used, for example, in a power plant. Monitored and controlled equipment 2 such as gas, pulp, and relays are operated by control signals issued from the supervisory control center 3. Therefore, it is extremely difficult for the operator to control the monitored control device 2 through face-to-face operations.

そこで、被監視制御所１と監視制御所３との間でのデー
タ伝送つ捷シ監祝制御所３における監視制御盤４の操作
ンＩ？クン等を操作して発せられた制御信号と被監視制
御機器２の状態などを示す状態信号との伝送は、両割御
所１，３にそれぞれ設けられた伝送装置５，６により伝
送路７を介して行なわれる。そして、被監視制御所１に
操作員が在る場合は、伝送路７にその信号をのせて伝送
を行なう通話装置８，９によシ両制御所１，３間での通
話をできるようにしてある。Therefore, the data transmission between the monitored control station 1 and the supervisory control station 3 and the operation of the supervisory control panel 4 in the supervisory control station 3 are necessary. The control signals emitted by operating the controller and the status signals indicating the status of the monitored control equipment 2 are transmitted through the transmission line 7 by the transmission devices 5 and 6 installed in the Ryowarigosho 1 and 3, respectively. It is done through If there is an operator at the monitored control center 1, the communication devices 8 and 9, which transmit the signal on the transmission line 7, are used to enable communication between the two control centers 1 and 3. There is.

また、被監視制御所１の被監視制御機器２の監視制御を
データ伝送だけにょシ行なうのではなく、実際に被監視
制御機器２の状態を見たい場合は、第２図に示すように
その被監視制御機器２を撮像するテレビジョンカメラ装
置１０を設置し、このテレビジョンカメラ装置１ｏから
送出される映像信号を伝送路７とは別の伝送路１１を介
して監視制御所３に設置したテレビジョン表示装置１２
に送って被監視制御機器の状態をモニタできるようにし
ている。In addition, if you want to monitor and control the monitored control equipment 2 in the monitored control station 1 by actually checking the status of the monitored control equipment 2 instead of just transmitting data, you can do so as shown in Figure 2. A television camera device 10 for capturing an image of the monitored and controlled equipment 2 was installed, and a video signal sent from the television camera device 1o was installed in the monitoring control center 3 via a transmission path 11 different from the transmission path 7. Television display device 12
The status of monitored and controlled equipment can be monitored by sending the information to

〔背景技術の問題点〕[Problems with background technology]

したがって、第１図に示す装置では、被監視制御機器２
の状態は伝送路７に伝送する状態信号のみにしかつかむ
ことができず、このため実際に被監視制御機器２が、監
視制御盤４から発せられた制御信号どおりに作動してい
るのかどうか正確拠判らない。例えは、伝送装置５，６
、伝送路７の故障などにより誤信号が伝送されてしまう
こともある。Therefore, in the device shown in FIG.
The status of can be grasped only from the status signal transmitted to the transmission line 7, and therefore it is not possible to accurately determine whether the monitored control equipment 2 is actually operating according to the control signal issued from the supervisory control panel 4. I have no idea. For example, transmission devices 5 and 6
, an erroneous signal may be transmitted due to a failure of the transmission line 7 or the like.

一方、第２図に示す装置では、第１図に示す装置に加え
て別の伝送路１１を布設しなければならず、さらにカメ
ラ装置ＩＯを用いるため照明装置を設けなければならな
い。On the other hand, in the apparatus shown in FIG. 2, another transmission line 11 must be installed in addition to the apparatus shown in FIG. 1, and since the camera device IO is used, an illumination device must also be provided.

〔発明の目的〕[Purpose of the invention]

本発明は上記実情に基づいてなされたもので、その目的
とするところは、簡単な構成のもので正確に被監視制御
機器の状態を監視制御し得る遠方監視制御装置を提供す
ることにある。The present invention has been made based on the above-mentioned circumstances, and its object is to provide a remote monitoring and control device that has a simple configuration and can accurately monitor and control the status of monitored and controlled equipment.

〔発明の概要〕[Summary of the invention]

本発明は、監視制御所と被監視制御所との間のデータ伝
送を伝送路を介して行なう監視制御装置にあって、前記
被監視制御所の被監視制御機器の作動音を収集し、この
収集によ、り得た作動音信号を前記伝送路にのせる作動
音伝送手段を設け、これにより前記被監視制御所におい
て前記被監視制御機器の状態を確認できるようにした遠
方監視制御装置である。The present invention relates to a supervisory control device that performs data transmission between a supervisory control center and a monitored control station via a transmission line, and which collects operating sounds of monitored control equipment in the monitored control station. A remote monitoring and control device is provided with an operating sound transmission means for transmitting the obtained operating sound signal onto the transmission line, thereby enabling the state of the monitored control equipment to be confirmed at the monitored control station. be.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明に係る監視制御装置の一実施例について第
３図ないし第６図を参照して説明する。第３図は遠方監
視制御装置の構成図である。An embodiment of the supervisory control device according to the present invention will be described below with reference to FIGS. 3 to 6. FIG. 3 is a configuration diagram of the remote monitoring and control device.

第３図において２０は例えば水中、海底、山奥、砂漠な
どの操作員の入シ込めない地域に設けられた被監視制御
所であって、この被監視制御所２０は前述したように例
えば山奥に設けられた発電所に用いられているポンプ、
・−′ルグ、リレー、継電器などの被監視制御機器２１
を、監視制御所３０から発せられ伝送路りを介して送ら
れてくる制御信号により作動し、かつ作動した被監視制
御機器２ノの状態を示す状態信号を監視制御装置３０に
送出し、さらに被監視制御機器２１の作動音をも監視制
御装置３０に送る機能をもったところである。具体的に
は、監視制御所３０から送られてくる制御信号を受け取
って被監視制御機器２１に送り、かつ制御信号に応じて
作動した被監視制御機器２Ｉの状態例えば・ぐルブの開
度が何・ぐ−セントかを示す熟状態信号を監視制御所に
送出するＦＳ変調方式の変調器および復調器の機能を持
つ伝送装置２２、監視制御所３０との間での通話を行な
い、その通話信号を伝送路りにのせる通話装置２３、さ
らには、被監視制御機器２１の近傍に設けられ、例えば
ポンプなどの作動音を収集してその作動音信号を伝送路
りにのせる集音装置２４から構成されている。集音装置
２４は、第４図に示すように集音マイク２４ａと増幅部
２４ｂとから構成され、この集音装置２４と通話装置２
３とは切換スイッチＳＩによシ切換えられるようになっ
ている。切換ス・イッチＳ、は、手動操作により切換え
られるとともに監視制御盤３１からの切換信号によって
も切換えられるようになっており、また通話装置２３に
よる呼び出し２は、被監視制御機器２１を通して伝送装
置２２から行なわれるようになっている。In FIG. 3, reference numeral 20 denotes a monitored control station installed in an area where operators cannot enter, such as underwater, on the ocean floor, deep in the mountains, or in the desert. Pumps used in installed power plants,
- Monitored and controlled equipment 21 such as relays, relays, relays, etc.
is activated by a control signal issued from the supervisory control center 30 and sent via the transmission path, and sends a status signal indicating the status of the activated monitored controlled equipment 2 to the supervisory control device 30, and further It also has a function of sending the operating sound of the monitored and controlled equipment 21 to the monitoring and control device 30. Specifically, it receives a control signal sent from the supervisory control center 30, sends it to the monitored controlled device 21, and determines the state of the monitored controlled device 2I that is operated in response to the control signal, for example, the opening degree of the valve. A telephone call is made between the transmission device 22, which has the functions of an FS modulation modulator and demodulator, and the supervisory control center 30, which sends a readiness signal indicating how many cents to the supervisory control center. A communication device 23 that puts signals on a transmission path, and a sound collection device that is installed near the monitored control equipment 21 and collects the operating sound of, for example, a pump and puts the operating sound signal on the transmission path. It consists of 24. The sound collecting device 24 is composed of a sound collecting microphone 24a and an amplifying section 24b as shown in FIG.
3 can be switched by a changeover switch SI. The switch S is switched by manual operation and also by a switching signal from the supervisory control panel 31, and calls 2 from the communication device 23 are sent to the transmission device 22 through the monitored and controlled equipment 21. It has been practiced since.

一方、監視制御所３０は、被監視制御所２０における被
監視制御機器２１の制御監視を行なうところで、具体的
には、被監視制御機器２Ｉのそれぞれの機器に対しての
操作ボタンやその機器の状態を示す表示ランプなどを被
監視制御機器２１に応じて複数配置した監視制御盤３１
、また被監視制御所゛２０に対応して伝送装置３２、通
話装置、？。９が設けられ、さらに集音装置２４から延
出される作動音信号を再生する毛再生装宿３４から構成
されている。この音再生装置、９４は、第５図に示すよ
うにスピーカ３４ｇと増幅部３４　ｂとから構成されて
おり、この音再生装置３４と通話装置３３とけり換スイ
ッチＳ２により切換えられるようになっている。On the other hand, the supervisory control center 30 controls and monitors the monitored control equipment 21 in the monitored control center 20, and specifically controls the operation buttons for each of the monitored control equipment 2I, A monitoring control panel 31 in which a plurality of display lamps indicating the status are arranged according to the monitored and controlled equipment 21.
, and corresponding to the monitored control station 20, a transmission device 32, a communication device, ? . 9 is provided, and further comprises a hair regeneration device 34 for reproducing the operating sound signal extended from the sound collection device 24. As shown in FIG. 5, this sound reproducing device 94 is composed of a speaker 34g and an amplifying section 34b, and can be switched between the sound reproducing device 34, the communication device 33, and a changeover switch S2. There is.

さて、伝送装置：：１２，３２間のデータ伝送と通話装
ｆｉ　２３　、３３間せたけ集音装（η２４と音再生装
置３４との間の信号の伝送とｔ、１１、同一・の伝送路
ｌ・にのせて行なうので、その伝送方法および構成は次
のようになっている。すなわち、伝送装置２３　、３．
９間の伝送は、第６図に示す如＜２．４ｋＨｚを中上・
とじた２、３ｋＨｚから２．５　ｋＨ７の周波数帯域で
行ない、一方、通話装置２３．　、？　３問および集音
装＃２４と音再生装置、？４との間の伝送は１．８ｋＨ
７以下の周波数帯域で行なっている。このため、第４図
および第５図に示すように、切換スイッチＳ、と伝送路
りとの間に周波数帯域１．８ｋＨｚ以下を設定するナヤ
ンネル設定部２５が設けられ、才だ伝送路りと切換スイ
ッグーＳ２との間にチャンネル設定部２５と同一１１７
）−１−ヤンネル設定部３５が設けらオじＣいる。Now, the data transmission between the transmission device: 12 and 32, the transmission of the signal between the communication equipment fi 23 and the sound collection device between η24 and the sound reproduction device 34, and the transmission line of t, 11, the same. The transmission method and configuration are as follows. That is, the transmission devices 23, 3.
The transmission between 9 and 9 is as shown in Figure 6.
This is done in the frequency band of 2.3 kHz to 2.5 kHz7, while the communication device 23. ,? 3 questions and sound collection device #24 and sound reproduction device? The transmission between 4 and 4 is 1.8kHz.
This is done in frequency bands below 7. For this reason, as shown in FIGS. 4 and 5, a channel setting section 25 for setting a frequency band of 1.8 kHz or less is provided between the changeover switch S and the transmission path, and the transmission path is The same 117 as the channel setting section 25 is connected between the switching swig S2
)-1-A channel setting section 35 is provided.

次に上記の如く構成された装置の動作について説、明す
る。通常、操作員ｖ」：監視制御ｎ１３０におり、１」
」奥などの被監視制御所２　ｏは無人となっている。し
たがって切換スイッチＳ１は年刊装置２４側に、甘だ切
換スイッチ８２は音「１）正装ｇ、３４側に接続されて
いる。例えば発電所を制御するためにその醪ンフ０、・
クツドブ、リレーなどの被監視制御機器２１を作動させ
る場合、操作員は監視制御盤３１の操作ｄ君タンなど台
操作して制御するのに適正な制御信月を送出させる。Next, the operation of the apparatus configured as described above will be explained. Normally, operator v": is in supervisory control n130, 1"
The monitored control station 2o, such as the back, is unmanned. Therefore, the changeover switch S1 is connected to the yearly publication device 24 side, and the sweet changeover switch 82 is connected to the sound ``1) formal g, 34 side.For example, in order to control a power plant, its sake 0, .
When operating the monitored control equipment 21 such as a switch, a relay, etc., the operator operates the monitoring control panel 31, such as the d button, to send out a control signal appropriate for control.

この制御信号は伝送装置３２により送出さ第１伝送路り
を通って被監視制御所２０に送られる。This control signal is sent out by the transmission device 32 and sent to the monitored control station 20 through the first transmission path.

被監視制御所２０の伝送装置２２仁１−１送ら牙］てき
た制御信号を受け取って被監視制御機器２ノに送る。こ
れにより、被監視制御機器２ノは作動する、例えばパル
プの開度が３５％から５０チに変化するとか、ポンプが
作動開始するなどである。The transmission device 22 of the monitored control station 20 receives the incoming control signal and sends it to the monitored controlled equipment 2. As a result, the monitored control equipment 2 operates, for example, the pulp opening changes from 35% to 50%, or the pump starts operating.

そこで、これら制御信号に応じた被監視制御機器２１の
作動の状態は、その作動状態が検出されて状態信号とし
て伝送装置２２から監視制御装置３０ＶＣ送られ、この
監視制御装置３０の監視制御盤３ノに表示されて操作員
に示される。Therefore, the operating state of the monitored and controlled equipment 21 in response to these control signals is detected and sent as a state signal from the transmission device 22 to the monitoring and control device 30VC, and the monitoring and control device 30 of the monitoring and control device 30 receives the operating state. is displayed to the operator.

さらに、第３図に示す装置では、制御信号によシ作動し
た被監視制御機器２１の作動音がその近傍に設けられた
集音マイク２４ａによシ集音されて作動音信号として増
幅部２４ｂ１切換スイッチＳ１、伝送路りを介して監視
制御所３０に送られる。例えば被監視制御機器２ノの作
動音としては、ポンプの運転によ多発生する音、パルプ
の動作音、リレーの駆動音、継電器の投入およびしゃ断
時の音等被監視制御機器２１の動作状態を示す音である
。そして、これら作動音は監視制御所３０のスピーカ３
４ａに再生されて操作員に報知される。なお、監視制御
所３０に送られる音は、被監視制御機器２１の作動音ば
かシでなく、不具合が発生したときの警報音や被監視制
御所２０に操作員などがいたときの会話音声なども送ら
れる。Furthermore, in the apparatus shown in FIG. 3, the operating sound of the monitored control equipment 21 that is activated by the control signal is collected by the sound collecting microphone 24a provided in the vicinity, and is converted into an operating sound signal by the amplifying section 24b1. The signal is sent to the supervisory control center 30 via the changeover switch S1 and the transmission path. For example, the operating sounds of the monitored controlled equipment 2 include the sounds often generated during pump operation, the operating sound of pulp, the driving sound of relays, the sound of turning on and off relays, etc., and the operating state of the monitored controlled equipment 21. This is the sound that indicates. These operating sounds are transmitted through the loudspeaker 3 of the monitoring and control center 30.
4a and notified to the operator. Note that the sounds sent to the supervisory control center 30 are not just the operating sounds of the monitored control equipment 21, but also alarm sounds when a malfunction occurs, conversation voices when an operator is present in the monitored control center 20, etc. will also be sent.

この結果、監視制御所３０では、操作員の操作どうシに
被監視制御機器２ノが作動したのかが確認される。As a result, the supervisory control center 30 confirms whether the monitored and controlled equipment 2 has been activated by the operator's operation.

このように本発明の装置においては、被監視制御機器２
ノの作動音を集音する集音装置２４を設け、この作動音
を作動音信号として伝送路りにのせて監視制御所３０に
送って再生するようにしたので、監視制御盤３１での表
示と音再生装置３４によシ再生される作動音とにより被
監視制御機器２ノが操作員の操作したとおシに作動した
のかが正確に判かる。したがって、操作員が容易に立入
ることが困難な地域に設けられた被監視制御所２０や遠
隔地に設けられて直接操作するのが困難な被監視制御所
２０に対する監視制御があたかも直接操作している如く
となる。In this way, in the device of the present invention, the monitored control equipment 2
A sound collection device 24 is provided to collect the operating sound of Based on the operation sound reproduced by the sound reproduction device 34, it can be accurately determined whether the monitored control device 2 has operated in accordance with the operator's operation. Therefore, monitoring and control of monitored control stations 20 that are located in areas that are difficult for operators to easily access, or that are located in remote locations that are difficult to directly operate, can be performed as if they were directly operated. It will be as if it is.

さらに、データ伝送と作動音信号または通話信号の伝送
とは同一の伝送路りを用いているが、その伝送の周波数
帯域が異なっているため、混信することはない。Furthermore, although the data transmission and the transmission of the operating sound signal or the speech signal use the same transmission path, the transmission frequency bands are different, so there is no interference.

集音装置２４は被監視制御機器２１の作動音はかりでな
く、モータの異常動作により発する異常音や継電器の異
常動作音なども集音するので、被監視制御機器２１の診
断や異常発生の拡大を防ぐことができる。The sound collection device 24 collects not only the operating sound of the monitored control equipment 21 but also abnormal sounds emitted by abnormal motor operation and abnormal operation sounds of relays, so it can be used to diagnose the monitored control equipment 21 and to spread the occurrence of abnormalities. can be prevented.

なお、集音マイク２４ａに指向の鋭いものを用いれば、
集音能力を向上し得えて確実に被監視制御機器２１の作
動音を集音できるようになる。Note that if the sound collecting microphone 24a is one with a sharp direction,
The sound collection ability can be improved and the operation sound of the monitored control equipment 21 can be collected reliably.

寸だ、本発明は上記一実施例に限定されるものではない
。例えば第７図に示すように被監視制御機器２１の作動
音を集音マイク４０で集音し、その作動音信号４０ａ〔
第８図（ａ）〕と増幅器４ノで増幅して第８図（ｂ）に
示す信号４１ａとし、さらにこの信号４１ａを変換器４
２によシ所定レベルをもって第８図（Ｃ）に示すような
状態信号４２ａに変換して伝送装置４３に送るようにし
てもよい。なお、伝送装置４３にｋｌｌ、周波数帯域（
１，８ｋＨｚ以下）を設定する機能を持っている。However, the present invention is not limited to the above embodiment. For example, as shown in FIG. 7, the operating sound of the monitored control equipment 21 is collected by a sound collecting microphone 40, and the operating sound signal 40a [
FIG. 8(a)] is amplified by the amplifier 4 to obtain a signal 41a shown in FIG.
Alternatively, the signal may be converted to a status signal 42a with a predetermined level as shown in FIG. 8(C) and sent to the transmission device 43. Note that the transmission device 43 has kll, frequency band (
1.8kHz or less).

〔発明の効果〕〔Effect of the invention〕

本発明によれば、被監視制御機器の作動音を集音し、そ
の作動音信号を、被監視制御所と監視制御所との間のデ
ータ伝送に用いる伝送路にのせて監視制御所に送シその
作動音を再生する作動音伝送手段を設けたので、筒部な
構成のもので正確に被監視制御機器の状態を監視制御し
得る遠方監視制御装置を提供できる。According to the present invention, the operating sound of the monitored control equipment is collected, and the operating sound signal is sent to the supervisory control center on a transmission path used for data transmission between the monitored control center and the supervisory control center. Since the operating sound transmission means for reproducing the operating sound is provided, it is possible to provide a remote monitoring and control device that can accurately monitor and control the state of the monitored control equipment with a cylindrical structure.

【図面の簡単な説明】[Brief explanation of drawings]

第１図および第２図は従来の遠方監視制御装置の構成図
、第３図は本発明に係る遠方監視制御装置の一実施例を
示す構成図、第４図および第５図は第３図に示す装置の
具体的な構成図で、第４図は被監視制御所の構成図、第
５図は監視制御所の構成図、第６図は第３図に示す装置
における伝送の周波数帯域を示す図、第７図は本発明の
装置の変形例を示す構成図、第８図（ａ）（ｂ）（Ｃ）
は第７図に示す装置の動作を説明するだめの波形図であ
る。 ２０・・被監視制御所、２１・・・被監視制御機器、２
２・・・伝送装置、２３・・・通話装置、２４・・・集
音装置、２４ａ・・集音マイク、２４ｂ・・・増幅部、
２５・・・チャンネル設定部、３ｏ・・・監視制御所、
３ノ・・・監視制御盤、３２・・・伝送装置、３３・・
・通話装置、３４・・・音再生装置１．？　４　ａ・・
・スピーカ、Ｊ　４　ｂ・・増幅部、３５・・・チャン
ネル設定部、Ｓ、、Ｓ２　・切換スイッチ。 出願人代理人　弁理士　鈴　江　武　彦第１図1 and 2 are block diagrams of a conventional remote monitoring and control device, FIG. 3 is a block diagram showing an embodiment of a remote monitoring and control device according to the present invention, and FIGS. 4 and 5 are block diagrams of a conventional remote monitoring and control device. Figure 4 is a diagram showing the configuration of the monitored control station, Figure 5 is the configuration diagram of the supervisory control station, and Figure 6 shows the frequency band of transmission in the equipment shown in Figure 3. 7 is a configuration diagram showing a modification of the device of the present invention, and FIGS. 8(a), (b), and (C).
7 is a waveform diagram for explaining the operation of the device shown in FIG. 7. FIG. 20...Monitored control station, 21...Monitored control equipment, 2
2... Transmission device, 23... Telephone device, 24... Sound collecting device, 24a... Sound collecting microphone, 24b... Amplifying section,
25...Channel setting section, 3o...Monitoring control center,
3... Monitoring control panel, 32... Transmission device, 33...
-Telephone device, 34...sound playback device 1. ? 4 a...
・Speaker, J4b...Amplification section, 35...Channel setting section, S,, S2 ・Selector switch. Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (1)

【特許請求の範囲】[Claims] 被制御所から伝送路を通じて送信される状態信号に応じ
て制御所が前記被制御所の状態を前記伝送路を通じて監
視制御する遠方監視制御装置において、前記被制御所内
の作動音等を収集する手段と、この手段によって収集し
た作動音信号を前記状態信号とともに前記伝送路を通じ
て前記制御所に伝送する手段と、この手段によって伝送
された前記作動音侶月を再生する手段とを具備すること
を特徴とする遠方監視制御装置。In a remote monitoring and control device in which a control center monitors and controls the state of the controlled station via the transmission line in response to a status signal transmitted from the controlled station via the transmission line, means for collecting operating sounds, etc. in the controlled station. and means for transmitting the operating sound signal collected by this means together with the status signal to the control center through the transmission line, and means for reproducing the operating sound signal transmitted by this means. A remote monitoring and control device.