JPH02132599A - Monitor device - Google Patents

Monitor device

Info

Publication number
JPH02132599A
JPH02132599A JP12710389A JP12710389A JPH02132599A JP H02132599 A JPH02132599 A JP H02132599A JP 12710389 A JP12710389 A JP 12710389A JP 12710389 A JP12710389 A JP 12710389A JP H02132599 A JPH02132599 A JP H02132599A
Authority
JP
Japan
Prior art keywords
abnormality
video memory
sensor
video
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12710389A
Other languages
Japanese (ja)
Other versions
JP2639100B2 (en
Inventor
Norio Tsuchiya
土屋 徳翁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of JPH02132599A publication Critical patent/JPH02132599A/en
Application granted granted Critical
Publication of JP2639100B2 publication Critical patent/JP2639100B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording

Abstract

PURPOSE:To easily and surely verify an abnormality condition after abnormality is detected by stopping the picture recording operation of a video memory and video-recording plural number of pictures in respective periods before, during, and after the occurrence of the abnormality by the video memory when the abnormality occurs. CONSTITUTION:Since a video memory 5 respectively and periodically video- records plural picture signals from a telecamera 1 in an input sequence, at the point of a certain moment, the video memory 5 records the video of a past fixed period. When the abnormality of a monitoring object is detected by a sensor 4 under this state and an abnormality detected signal from the sensor 4 is inputted to the video memory 5, the video memory 5 stops the recording operation of the video memory 5 after the fixed period passes from the inputted point. Consequently, the pictures in the respective periods before, during, and after the occurrence of the abnormality are recorded in the video memory 5. Thus, the abnormality condition in the monitoring object can be surely verified.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、テレビカメラとセンサとを組み合わせて所
定の監視対象の異常状況を監視する監視装置に関するも
のである. [従来の技術] 第5図は1台のテレビカメラおよびビデオセンサを使用
した従来の監視装置を示すブロック図であり、図におい
て、1は監視対象(図示せず)を撮像するテレビカメラ
,2はテレビカメラ1がらの画像信号の変化を検出する
ビデオセンサ、3はビデオセンサ2からの出力画像を表
示するテレビモ二夕である。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitoring device that combines a television camera and a sensor to monitor abnormal conditions of a predetermined monitoring target. [Prior Art] Fig. 5 is a block diagram showing a conventional monitoring device using one television camera and a video sensor. 3 is a video sensor that detects changes in the image signal from the television camera 1; and 3 is a television monitor that displays the output image from the video sensor 2.

このような従来装置では、テレビカメラ1は監視対象を
常時撮像し、その画像信号をビデオセンサ2へ送る。こ
のビデオセンサ2は、入力画像信号に規定値以上の画像
情報変化があった場合にその変化部分をマーキング表示
してテレビモニタ3上に写し出す。
In such a conventional device, the television camera 1 constantly captures an image of the object to be monitored and sends the image signal to the video sensor 2. This video sensor 2 marks and displays the changed portion on the television monitor 3 when there is a change in the image information of the input image signal by more than a specified value.

また,第6図は複数台(ここでは8台)のテレビカメラ
およびビデオテープレコーダを使用した従来の監視装置
を示すブロック図であり、図において,11〜18はそ
れぞれ監視対象(図示せず)を撮像するテレビカメラ、
21は監視対象の異常を検知するセンサ,31はテレビ
カメラ11〜18からの画像信号を選択して出力する映
像切換器、41はセンサ21からの異常検知信号により
映像切換器31で選択された画像信号を録画するビデオ
テープレコーダ(以下VTRという)、51はこのVT
R4 1からの出力画像を表示するテレビモ二夕である
Furthermore, FIG. 6 is a block diagram showing a conventional monitoring device using a plurality of television cameras (eight in this case) and video tape recorders. a television camera that captures the
21 is a sensor that detects an abnormality in the object to be monitored; 31 is a video switch that selects and outputs image signals from the television cameras 11 to 18; and 41 is a sensor selected by the video switch 31 based on the abnormality detection signal from the sensor 21. A video tape recorder (hereinafter referred to as VTR) that records image signals, 51 is this VT
This is a television monitor that displays the output image from R41.

第6図に示す従来装置では、テレビカメラ11〜18は
監視対象を常時撮像し、その画像信号を画像切換器31
へ送る。そして、センサ21が異常を検知しない場合、
映像切換器31は無選択状態であり、VTR41も停止
状態になっている。
In the conventional device shown in FIG.
send to Then, if the sensor 21 does not detect any abnormality,
The video switch 31 is in a non-selected state, and the VTR 41 is also in a stopped state.

一方、センサ21が監視対象の異常を検知した場合には
、画像切換器31は、センサ21からの異常検知信号に
より、監視対象における異常発生部分を撮像しているテ
レビカメラからの画像信号を選択して出力するとともに
,VTR41がセンサ21からの異常検知信号により録
画起動さ九、選択されたテレビカメラの画像信号が録画
される。
On the other hand, when the sensor 21 detects an abnormality in the monitoring target, the image switching device 31 selects the image signal from the television camera that is imaging the abnormality part in the monitoring target based on the abnormality detection signal from the sensor 21. At the same time, the VTR 41 starts recording in response to the abnormality detection signal from the sensor 21, and the image signal of the selected television camera is recorded.

録画後、VTR41を再生起動することにより、録画さ
れた異常発生部分をテレビモニタ51上に写し出すこと
ができる。
After recording, the recorded portion where the abnormality has occurred can be displayed on the television monitor 51 by starting playback of the VTR 41.

[発明が解決しようとする課題コ しかしながら、第5図に示した従来の監視装置では,画
像を記録する手段を有していないので、異常を検知して
テレビモニタ3上に異常部分をマーキング表示しても、
異常の状況を後で検証することができないなどの課題が
あった。
[Problems to be Solved by the Invention] However, the conventional monitoring device shown in FIG. Even if
There were issues such as the inability to verify the abnormal situation later.

また、第6図に示した従来の監視装置では、画像を記録
する手段(VTR41)を有してはいるが、センサ21
による異常検知後の状況しか録画できないほか、VTR
4 1がセンサ21からの異常検知信号を受けて録画起
動されてから正常録画されるまでに,数100msec
〜数secの時間を要するため、異常発生時の状況を録
画することができず、異常の状況を異常発生前,異常発
生時および異常発生後の状況と比較して検証できないな
どの課題があった. この発明は上記のような課題を解消するためになされた
もので、異常発生前,異常発生時および異常検知後の録
画を可能にし、監視対象における異常状況の検証を確実
に行なえるようにした監視装置を得ることを目的とする
Furthermore, although the conventional monitoring device shown in FIG. 6 has means for recording images (VTR 41), the sensor 21
In addition to being able to record only the situation after an abnormality is detected by
4 It takes several hundred milliseconds from the time 1 receives the abnormality detection signal from the sensor 21 and starts recording until the time it records normally.
Because it takes several seconds, it is not possible to record the situation at the time of the abnormality, and there are problems such as the inability to verify the abnormality situation by comparing it with the situation before, at the time, and after the abnormality occurred. Ta. This invention was made to solve the above-mentioned problems, and makes it possible to record before an abnormality occurs, when an abnormality occurs, and after an abnormality is detected, thereby making it possible to reliably verify the abnormal situation in the monitored object. The purpose is to obtain a monitoring device.

[課題を解決するための手段] この発明に係る監視装置は、監視対象の異常を検知する
センサと、テレビカメラからの画像を複敷枚周期的に録
画し前記センサからの異常検知信号が入力されてから所
定時間経過後に録画動作を停止するビデオメモリとをそ
なえたものである。
[Means for Solving the Problems] A monitoring device according to the present invention includes a sensor that detects an abnormality in a monitored object, and a double-page periodic recording of images from a television camera, and an abnormality detection signal from the sensor is input. The video memory is equipped with a video memory that stops the recording operation after a predetermined period of time has elapsed.

[作   用] この発明における監視装置では、センサにより監視対象
に異常が発生したことが検知されると、その異常検知信
号がビデオメモリへ入力される。
[Function] In the monitoring device according to the present invention, when the sensor detects that an abnormality has occurred in the monitored object, the abnormality detection signal is input to the video memory.

ビデオメモリでは、テレビカメラにより撮像された画像
が複数枚周期的に録画されており、異常検知信号が入力
されると、所定時間経過してから録画動作が停止される
。つまり、監視対象に異常が発生する直前から異常発生
中さらには異常発生後に至る複数枚の画像がビデオメモ
リに記録されることになる。
In the video memory, a plurality of images captured by a television camera are periodically recorded, and when an abnormality detection signal is input, the recording operation is stopped after a predetermined period of time has elapsed. In other words, a plurality of images are recorded in the video memory from just before an abnormality occurs in the monitoring target, during the abnormality, and even after the abnormality occurs.

[発明の実施例] 以下、この発明の一実施例を図について説明する。[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

第1図において、1は監視対象(図示せず)を撮像して
画像信号を出力するテレビカメラ、3は後述するマーカ
信号重畳回路7からの出力画像を表示するテレビモニタ
、4は監視対象の異常を検知するセンサ、5はテレビカ
メラ1からの画像を複数枚周期的に録画しセンサ4から
の異常検知信号が入力されてから所定時間経過後に録画
動作を停止するビデオメモリ、6はビデオメモリ5から
の再生画像を所定の基準画像と比較して規定以上の差の
有無を識別する画像識別回路で、ここで、所定の基準画
像として、ビデオメモリ5に録画された過去(1枚もし
くは数枚前)の画像を用いる。また、7は画像識別回路
6からの識別信号に基づきビデオメモリ5の再生画像の
異常部分にマーカ信号を重畳してテレビモニタ3に表示
するマーカ信号重畳回路である。
In FIG. 1, numeral 1 is a television camera that images a monitoring target (not shown) and outputs an image signal, 3 is a television monitor that displays an output image from a marker signal superimposition circuit 7, which will be described later, and 4 is a television camera that captures an image of a monitoring target (not shown). A sensor that detects an abnormality; 5 a video memory that periodically records a plurality of images from the television camera 1; and 6 a video memory that stops the recording operation after a predetermined period of time has passed after the abnormality detection signal from the sensor 4 is input; This is an image identification circuit that compares the reproduced image from 5 with a predetermined reference image to determine whether there is a difference greater than a specified value. Use the previous image. Further, 7 is a marker signal superimposition circuit that superimposes a marker signal on an abnormal portion of the reproduced image of the video memory 5 based on the identification signal from the image identification circuit 6 and displays the same on the television monitor 3.

次に、本実施例の装置の動作を第2図(a)〜(d)に
より説明する。ビデオメモリ5はテレビカメラ1からの
画像信号を入力順に複数枚(例えば本実施例では16枚
)繰り返し周期的に録画しているので、ある瞬間の時点
では過去の一定時間の映像を記録していることになる。
Next, the operation of the apparatus of this embodiment will be explained with reference to FIGS. 2(a) to 2(d). The video memory 5 repeatedly and periodically records a plurality of image signals (for example, 16 images in this embodiment) from the television camera 1 in the order of input, so at a certain moment, it records images from a certain period of time in the past. There will be.

このような状態で、センサ4により監視対象の異常が検
知されると、センサ4からの異常検知信号がビデオメモ
リ5へ入力される。ビデオメモリ5は、異常検知信号を
受けると,その入力時点から一定時間経過後にビデオメ
モリ5の記録動作を停止する。これにより、第2図(a
)〜(d)に示すように、異常発生前,中,後の画像が
ビデオメモリ5に記録されることになる。
In this state, when the sensor 4 detects an abnormality in the monitored object, the abnormality detection signal from the sensor 4 is input to the video memory 5. When the video memory 5 receives the abnormality detection signal, the recording operation of the video memory 5 is stopped after a predetermined period of time has elapsed from the time of input of the abnormality detection signal. As a result, Figure 2 (a
) to (d), images before, during, and after the occurrence of the abnormality are recorded in the video memory 5.

本実施例では,ビデオメモリ5の録画画像数は、16と
して録画内容の数字はビデオメモリ5のメモリ番号を示
し、若い番号が過去の画像となる。
In this embodiment, the number of recorded images in the video memory 5 is 16, and the number in the recorded content indicates the memory number of the video memory 5, with the smaller number being the past image.

そして、ここで、異常前の画像が1〜5、異常中の画像
が6〜12、異常後の画像が13〜16のメモリ番号の
エリアに録画されることになる。
Here, images before the abnormality are recorded in areas with memory numbers 1 to 5, images during the abnormality are recorded in areas 6 to 12, and images after the abnormality are recorded in areas with memory numbers 13 to 16.

ついで、画像識別回路6により、ビデオメモリに録画さ
れた16枚の画像のうち異常前の画像であるメモリ番号
1の画像を基準画像として、この基準画像と、メモリ番
号2以降の記録画像との輝度信号もしくは色信号の比較
が行なわれ、規定値以上の差の画像変化の有無が識別さ
れる。そして、画像識別回路6は、規定値以上の差の画
像変化があった時点で比較動作を停止し,異常ありの識
別信号をマーカ信号重畳回路7へ出力する。
Next, the image identification circuit 6 uses the image with memory number 1, which is the image before the abnormality, as a reference image among the 16 images recorded in the video memory, and compares this reference image with the recorded images from memory number 2 onwards. A comparison of the luminance signal or color signal is performed, and the presence or absence of an image change with a difference greater than a specified value is identified. Then, the image identification circuit 6 stops the comparison operation when there is an image change with a difference greater than a specified value, and outputs an identification signal indicating that there is an abnormality to the marker signal superimposition circuit 7.

この状態では、ビデオメモリ5からマーカ信号重畳回路
7への再生画像信号としては、異常を有する画像が出力
されていることになるので、これにマーカ信号重畳回路
7により異常部分を表示するマーカ信号を重畳してテレ
ビモニタ3に表示する。
In this state, an image with an abnormality is output as a reproduced image signal from the video memory 5 to the marker signal superimposition circuit 7, so the marker signal superposition circuit 7 sends a marker signal to display the abnormal part. are superimposed and displayed on the television monitor 3.

このように,本実施例の装置によれば、ビデオメモリ5
に異常前から後までの複数枚の画像が記録されるので,
異常検知後の異常状況の検証を容易に且つ確実に行なえ
るようになる。
In this way, according to the device of this embodiment, the video memory 5
Since multiple images are recorded from before to after the abnormality,
It becomes possible to easily and reliably verify an abnormal situation after an abnormality is detected.

また、従来の装置では、監視対象が屋外にある場合など
に日照の急激な変化や風,信号による被写体(監視対象
)の動き等で誤警報を発生してしまうおそれがあったが
、本実施例の装置によれば,センサ4によりビデオメモ
リ5の異常時処理動作を起動し、記録された異常部分に
対応する部分にマーキング処理を施してテレビモニタ3
にマーキング表示を行なっているので、従来のような誤
警報を招くことなく確実な警報処理を行なえる利点もあ
る。
In addition, with conventional devices, there was a risk of false alarms occurring due to sudden changes in sunlight, wind, movement of the subject (monitored subject) due to traffic lights, etc. when the monitored subject was outdoors. According to the example device, the sensor 4 activates the abnormality processing operation of the video memory 5, performs marking processing on the portion corresponding to the recorded abnormality portion, and displays the image on the television monitor 3.
Since the markings are displayed on the display, there is also the advantage that reliable alarm processing can be performed without causing false alarms like in the past.

なお、上記実施例では、テレビカメラ1からの入力画像
をビデオメモリ5に連続的に録画する方式について説明
しいるが、入力画像をN枚毎に1枚録画するようにして
もよく、この場合、記録時間をそれだけ長くすることが
できる。
In the above embodiment, a method is described in which input images from the television camera 1 are continuously recorded in the video memory 5, but it is also possible to record one input image every N, and in this case, , the recording time can be increased accordingly.

ついで、第3,4図によりこの発明の他の実施例につい
て説明する。本実施例では、複数台(ここでは8台)の
テレビカメラ11〜18をそなえた場合を示す。
Next, other embodiments of the present invention will be described with reference to FIGS. 3 and 4. In this embodiment, a case is shown in which a plurality of (eight in this case) television cameras 11 to 18 are provided.

第3図において、11〜18はそれぞれ監視対象(図示
せず)の各部分を撮像して画像信号を出力するテレビカ
メラ,21は監視対象の異常を検知するセンサ、31は
後述する4分割表示装置からの4分割画像信号の複数入
力を一定時間毎にサイクリックに切り換える映像切換器
、41は画像信号を記録するVTR、51はVTR4 
1からの出力画像を表示するテレビモニタ,61.62
はそれぞれテレビカメラ11〜14および15〜18か
らの画像を4分割した同一画面に合成する4分割表示装
置,71は映像切換器31からの出力画像を複数枚周期
的に録画してセンサ21からの異常検知信号が入力され
てから所定時間経過後に録画動作を停止するビデオメモ
リである。
In FIG. 3, 11 to 18 are television cameras that image each part of a monitoring target (not shown) and output an image signal, 21 is a sensor that detects an abnormality in the monitoring target, and 31 is a four-part display that will be described later. A video switching device that cyclically switches multiple inputs of 4-split image signals from the device at regular intervals; 41 is a VTR for recording image signals; 51 is a VTR4;
TV monitor displaying the output image from 1, 61.62
71 is a 4-split display device that combines images from the television cameras 11 to 14 and 15 to 18 into the same 4-split screen; This is a video memory that stops recording operation after a predetermined period of time has elapsed since the abnormality detection signal was input.

上述のごとく構成された本実施例の装置の動作を第4図
(a)〜(e)により説明する。システム全体の8台の
テレビカメラ11〜18のうち、テレビカメラ11〜1
4および15〜18はそれぞれ4分割表示装置61.6
2により、4分割された同一画面上に合成される〔第4
図(e)参照〕。この2つの4分割表示装置61.62
からの4分割画像信号A,Bを、映像切換器31により
一定時間ごとに周期的に切り換えて、交互にビデオメモ
リ71に入力する。このビデオメモリ71は、入力順に
複数枚の画像信号A,Bを繰り返し周期的に録画してい
るので〔第4図(d)参照〕、ある瞬間の時点では過去
の一定時間内のテレビカメラ11〜18からの画像信号
を時系列的に記録していることになる。
The operation of the apparatus of this embodiment configured as described above will be explained with reference to FIGS. 4(a) to 4(e). Of the eight TV cameras 11 to 18 in the entire system, TV cameras 11 to 1
4 and 15 to 18 are respectively 4-split display devices 61.6
2, the images are synthesized on the same screen divided into four parts [4th
See figure (e)]. These two 4-split display devices 61.62
The four-split image signals A and B are periodically switched at fixed time intervals by a video switching device 31 and input into the video memory 71 alternately. Since this video memory 71 repeatedly and periodically records a plurality of image signals A and B in the input order [see FIG. 4(d)], at a certain moment, the television camera 1 This means that the image signals from 18 to 18 are recorded in time series.

このような状態で、第4図(a)〜(c)に示すように
、センサ21により監視対象の異常が検知されると、セ
ンサ21からの異常検知信号がビデオメモリ71および
VTR41へ入力される.VTR41は、異常検知信号
により録画動作を起動されるが、正常に録画されるまで
に数100msec〜数secの時間(機種によってほ
ぼ一定)を必要とする。
In this state, when the sensor 21 detects an abnormality in the monitoring target as shown in FIGS. 4(a) to 4(c), the abnormality detection signal from the sensor 21 is input to the video memory 71 and the VTR 41. Ru. Although the VTR 41 is activated to record by the abnormality detection signal, it takes several hundred milliseconds to several seconds (approximately constant depending on the model) until the video is recorded normally.

そこで,異常検知からVTR41の正常録画される時間
まで、ビデオメモリ71の周期的録画を継続させて、V
TR41が正常録画された時点でビデオメモリ71の録
画を停止する。
Therefore, the periodic recording of the video memory 71 is continued from the time the abnormality is detected until the time when the VTR 41 normally records.
Recording in the video memory 71 is stopped when the TR 41 is normally recorded.

これにより、第2図(d)に示すように,監視対象の異
常が検知される前からVTR4 1が異常後の画面を正
常録画するまでの時間内の画像信号がビデオメモリ71
に記録されることになる。
As a result, as shown in FIG. 2(d), image signals from before an abnormality in the monitored object is detected to when the VTR 41 normally records the screen after the abnormality are stored in the video memory 71.
will be recorded.

このように、第3.4図に示した実施例の装置によって
も、センサ21が監視対象の異常を検知する以前から、
異常発生時、さらには異常発生後にVTR4 1が正常
録画されるまでの時間内のテレビカメラ11〜18の画
像信号が、ビデオメモ!J71ににより記録され、引き
続いてVTR4 1がその後の画像信号を記録している
ので,第1,2図により示した実施例装置と同様に、監
視対象における異常の状況を異常発生前,異常発生時お
よび異常発生後と比較でき、異常発生状況の検証を容易
に且つ確実に行なえるようになる。
In this way, even before the sensor 21 detects an abnormality in the monitored object, even with the device of the embodiment shown in FIG. 3.4,
The image signals of the television cameras 11 to 18 during the time when the abnormality occurs and even after the abnormality occurs until the VTR 4 1 normally records are recorded as a video memo! J71, and subsequently the VTR41 records subsequent image signals, so the abnormality situation in the monitored object can be seen before the abnormality occurs, as well as when the abnormality occurs. It is possible to easily and reliably verify the abnormality occurrence situation by comparing the time and after the abnormality has occurred.

なお、上記実施例では,テレビカメラを8台をそなえ、
4分割画像を合成するために4分割表示装置を2台そな
えた場合について説明したが、本発明は、これに限定さ
れるものではなく、システム全体のテレビカメラの台数
に応じて適切なN分割表示装置を選択しても,上記実施
例と同様の効果が得られる。
In the above embodiment, eight television cameras are provided,
Although a case has been described in which two 4-split display devices are provided in order to synthesize a 4-split image, the present invention is not limited to this, and the present invention is not limited to this. Even if the display device is selected, the same effects as in the above embodiment can be obtained.

[発明の効果] 以上のように、この発明によれば,異常発生時にはセン
サからビデオメモリへ異常検知信号を出力してビデオメ
モリの録画動作を停止させ、ビデオメモリに異常発生前
,中,後の画像を複数枚録画させるように構成したので
、異常検知後の異常状況の検証を容易に且つ確実に行な
える効果がある。
[Effects of the Invention] As described above, according to the present invention, when an abnormality occurs, an abnormality detection signal is output from the sensor to the video memory to stop the recording operation of the video memory, and the video memory is recorded before, during, and after the abnormality occurs. Since the configuration is configured to record a plurality of images, it is possible to easily and reliably verify the abnormal situation after the abnormality is detected.

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

第1図はこの発明の一実施例による監視装置を示すブロ
ック図、第2図(a)〜(d)は上記実施例の装置の動
作を説明するためのタイミングチャート,第3図はこの
発明の他の実施例による監視装置を示すブロック図、第
4図(a)〜(e)は上記他の実施例の装置の動作を説
明するためのタイミングチャート,第5,6図はそれぞ
れ従来の監視装置を示すブロック図である。 図において、1・−テレビカメラ、3−・テレビモニタ
、4・・−センサ、5−ビデオメモリ、11〜18−テ
レビカメラ、21・−センサ、51・−テレビモニタ、
7 1 ・−・−ビデオメモリ。 なお、図中、同一の符号は同一、又は相当部分を示して
いる. 第3図 11へ旧一一一テレヒ゛カメラ 71−一−ピテ゛オメtリ
FIG. 1 is a block diagram showing a monitoring device according to an embodiment of the present invention, FIGS. 2(a) to (d) are timing charts for explaining the operation of the device of the above embodiment, and FIG. 3 is a block diagram showing a monitoring device according to an embodiment of the present invention. 4(a) to 4(e) are timing charts for explaining the operation of the device of the other embodiment, and FIGS. 5 and 6 respectively show a conventional monitoring device. FIG. 2 is a block diagram showing a monitoring device. In the figure, 1.--television camera, 3-.-television monitor, 4.--sensor, 5--video memory, 11-18--television camera, 21.--sensor, 51.--television monitor,
7 1 ・−・−Video memory. In addition, the same reference numerals in the figures indicate the same or equivalent parts. To Figure 3 11, old 111 TV camera 71-1-pitometries

Claims (1)

【特許請求の範囲】[Claims]  監視対象をテレビカメラにより常時撮像し、前記テレ
ビカメラからの画像信号に基づいて前記監視対象の異常
を監視し異常表示を行なう監視装置において、前記監視
対象の異常を検知するセンサと、前記テレビカメラから
の画像を複数枚周期的に録画し前記センサからの異常検
知信号が入力されてから所定時間経過後に録画動作を停
止するビデオメモリとがそなえられたことを特徴とする
監視装置。
A monitoring device that constantly images a monitored target with a television camera, monitors abnormalities in the monitored target based on image signals from the television camera, and displays abnormalities, the monitoring device comprising: a sensor that detects abnormalities in the monitored target; and the television camera. 1. A monitoring device comprising: a video memory that periodically records a plurality of images from the sensor and stops the recording operation after a predetermined period of time has elapsed after an abnormality detection signal from the sensor is input.
JP1127103A 1988-07-18 1989-05-19 Monitoring device Expired - Fee Related JP2639100B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17973888 1988-07-18
JP63-179738 1988-07-18

Publications (2)

Publication Number Publication Date
JPH02132599A true JPH02132599A (en) 1990-05-22
JP2639100B2 JP2639100B2 (en) 1997-08-06

Family

ID=16071002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1127103A Expired - Fee Related JP2639100B2 (en) 1988-07-18 1989-05-19 Monitoring device

Country Status (1)

Country Link
JP (1) JP2639100B2 (en)

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JPH0449495A (en) * 1990-06-19 1992-02-18 Mitsubishi Electric Corp Display system for alarm screen
JPH0474397U (en) * 1990-11-09 1992-06-29
JPH0644483A (en) * 1992-07-22 1994-02-18 Chiyoda Corp Remote monitoring and guarding system
JPH06266774A (en) * 1993-03-15 1994-09-22 Mitsubishi Electric Corp Video data preserving device
JPH08235471A (en) * 1995-02-24 1996-09-13 F M T:Kk Abnormality monitoring device
US6167186A (en) * 1996-11-07 2000-12-26 Mitsubishi Denki Kabushiki Kaisha Video recording device for retroactively reproducing a video image of an event, while also recording images in real time
JP2012014543A (en) * 2010-07-02 2012-01-19 Hitachi Ltd Remote monitoring system
CN113660517A (en) * 2021-08-17 2021-11-16 浙江大华技术股份有限公司 Video file storage method and device, storage medium and electronic device

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JPS6172397A (en) * 1984-09-17 1986-04-14 三菱電機株式会社 Monitor system
JPS61179693A (en) * 1985-02-04 1986-08-12 Mitsubishi Electric Corp Still picture transmitting device
JPS61179692A (en) * 1985-02-04 1986-08-12 Mitsubishi Electric Corp Still picture transmitting device
JPS61203789A (en) * 1985-03-07 1986-09-09 Ok Goraku Kiki:Kk Video recorder
JPS62261292A (en) * 1986-05-08 1987-11-13 Canon Inc Recorder
JPS6316785A (en) * 1986-07-09 1988-01-23 Matsushita Electric Ind Co Ltd On-vehicle supervisory equipment
JPS6346517A (en) * 1986-08-14 1988-02-27 Mitsubishi Electric Corp Monitor control computer system

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JPS5111315A (en) * 1974-07-17 1976-01-29 Mitsubishi Electric Corp KANSHISOCHI
JPS6172397A (en) * 1984-09-17 1986-04-14 三菱電機株式会社 Monitor system
JPS61179693A (en) * 1985-02-04 1986-08-12 Mitsubishi Electric Corp Still picture transmitting device
JPS61179692A (en) * 1985-02-04 1986-08-12 Mitsubishi Electric Corp Still picture transmitting device
JPS61203789A (en) * 1985-03-07 1986-09-09 Ok Goraku Kiki:Kk Video recorder
JPS62261292A (en) * 1986-05-08 1987-11-13 Canon Inc Recorder
JPS6316785A (en) * 1986-07-09 1988-01-23 Matsushita Electric Ind Co Ltd On-vehicle supervisory equipment
JPS6346517A (en) * 1986-08-14 1988-02-27 Mitsubishi Electric Corp Monitor control computer system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449495A (en) * 1990-06-19 1992-02-18 Mitsubishi Electric Corp Display system for alarm screen
JPH0474397U (en) * 1990-11-09 1992-06-29
JPH0644483A (en) * 1992-07-22 1994-02-18 Chiyoda Corp Remote monitoring and guarding system
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JPH06266774A (en) * 1993-03-15 1994-09-22 Mitsubishi Electric Corp Video data preserving device
JPH08235471A (en) * 1995-02-24 1996-09-13 F M T:Kk Abnormality monitoring device
US6167186A (en) * 1996-11-07 2000-12-26 Mitsubishi Denki Kabushiki Kaisha Video recording device for retroactively reproducing a video image of an event, while also recording images in real time
JP2012014543A (en) * 2010-07-02 2012-01-19 Hitachi Ltd Remote monitoring system
CN113660517A (en) * 2021-08-17 2021-11-16 浙江大华技术股份有限公司 Video file storage method and device, storage medium and electronic device

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