JPH01251458A - Monitoring device - Google Patents

Abstract

PURPOSE:To thoroughly and efficiently check the abnormal state of a plate to be monitored only by confirming a third storage content by recording abnormality in the place to be monitored on first or second video signal recording means alternately and thoroughly, and recording the abnormal part on a third video signal recording means accurately. CONSTITUTION:The place to be monitored on a monitoring line 1 is image- picked up by a video camera 4, and a video signal image-picked up by the camera 4 is recorded on a first VTR 5 and a second VTR 6 as the video signal recording means alternately and thoroughly. The dubbing of the video signals recorded on the VTR 5 and the VTR 6 are performed by a third VTR 7. And the video signal of the place to be photographed is recorded on the VTR 5 and the VTR 6 alternately and successively, and the dubbing of the video signal of the abnormal place in recording the video signal on the VTR 5 and the VTR 6 is performed and recorded on the VTR 7, thereby, the abnormal state of the place to be monitored can be monitored by a monitor TV receiver 8 thoroughly and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitoring device suitable for use in monitoring a production line of, for example, television receivers.

[Summary of the invention]

INDUSTRIAL APPLICABILITY The present invention is suitable for a monitoring device for a manufacturing line of a television receiver, etc., and includes a video camera that photographs a monitoring location, and first and second video cameras that record video signals photographed by the video camera. a video signal recording means;
and a third video signal recording means for dubbing the video signal recorded in the second video signal recording means; and a controller that controls the second and third video signal recording means, and under the control of the controller, the first and second video signal recording means alternately and continuously record photographed video signals of the monitoring location. , during recording by the first or second video signal recording means, supplying the video signal of the abnormal part in the video signal recorded in the second or first video signal recording means to the third video signal recording means; By dubbing the information, only the abnormal state at the monitoring location can be efficiently recorded without omission on the third video signal recording means.

[Conventional technology]

Conventionally, devices that detect abnormalities using infrared rays have been proposed as monitoring devices for remotely controlling factory production lines, etc., but even if an abnormality is detected, it is difficult to know what kind of situation has occurred. There was the inconvenience that it was impossible to find out unless one was there, and there was no evidence left behind.

Therefore, conventional monitoring devices using a television camera and a monitor have been proposed.

[Problem to be solved by the invention]

However, with conventional monitoring equipment that uses a television camera and monitor, it is necessary for a person to monitor the equipment, and in addition, it is necessary to use a VTR (video tape recorder) for long periods of time for recording. Because it uses frame-drop recording, there is a risk that important scenes may be missed.

For this reason, the applicant of the present invention has previously proposed a monitoring device that can perform monitoring efficiently by improving user-friendliness (Japanese Patent Application Laid-Open No. 62-265879). This monitoring device installs video cameras at multiple monitoring locations, and when a video processing unit detects a change in the video from any of the video cameras, the video from the video camera where the change was detected is displayed on the monitor receiver. By supplying signals and receiving images, multiple monitoring locations can be monitored efficiently.

However, in systems where constant monitoring is performed using a monitor receiver, a supervisor must constantly monitor the system.
It was not possible to selectively look only at defective phenomena.

In view of the above, an object of the present invention is to provide a monitoring device with improved usability.

[Means to solve the problem]

For example, as shown in FIG. 1, the monitoring device of the present invention includes a video camera (4) for photographing a monitoring place, and first and second video signal recording devices for recording video signals photographed by the video camera (4). Means (5) and (6) and the first and second
a third video signal recording means (7) for dubbing the video signals recorded in the video signal recording means (5) and (6);
1st. Second and third video signal recording means (5), (6
) and a controller (2) that controls (7),
Under the control of the controller (2), the first and second video signal recording means (5) and (6) alternately and continuously record the photographed video signal of the monitoring location, and record the first or second video signal. During recording by the recording means (5) or (6), the video signal of the abnormal part in the video signal recorded in the second or first video signal recording means (6) or (5) is recorded as a third video signal. The signal is supplied to the signal recording means (7) for dubbing.

[For production]

According to the monitoring device of the present invention, abnormalities at the monitoring location are recorded alternately and without omission by the first or second video signal recording means (5) or (6), and only these abnormal locations are recorded by the third video signal recording means. Since the information is reliably recorded in the means (7), it is possible to efficiently check all abnormal conditions at the monitoring location by simply checking the video recorded in the third video signal recording means (7).

[Embodiment] Hereinafter, an embodiment of the monitoring device of the present invention will be described with reference to the accompanying drawings.

The monitoring device of this example monitors the production line of a factory, and as shown in Figure 1, the product (I) on the production line (1)
This monitors the occurrence of defects in a), (Ib), (lc), . That is, in FIG. 1, (2) indicates a system controller that controls the operation of each device of this monitoring device. In this case, this system controller (2
) is connected to an operation key (2a), and an operation 1 command signal corresponding to the operation of this operation key (2a) is supplied. The operation keys (2a) include an "rR" button for instructing the monitoring mode, a "PJ" button for instructing the start and stop of monitoring, and an "E" button for instructing the end of monitoring.

In addition, (3) is the product (Ia) on the production line (1),
(Ib).

This is a sensor that detects defects in (lc), . This sensor (3) determines, for example, whether the flow of the manufacturing line (1) is normal or not, and when it is determined that the flow is not normal, it supplies an alarm signal to the system controller (2). It also supplies this alarm signal (2).

Further, (4) indicates a video camera, and this video camera (4) is connected to the products (la), (
lb), (lc).

... is arranged to photograph a predetermined manufacturing process (not shown). A control terminal of this video camera (4) is connected to a system controller (2), so that the system controller (2) can control the shadowing operation.

The video signal captured and output by this video camera (4) is input to a first video tape recorder (hereinafter referred to as VTR) (5) and a second video tape recorder (6) and (7). Supply to the terminal. This first VTR (5)
The control terminals of the and second VTRs (6) are connected to the system controller (2), and the system controller (2) allows recording on each VTR.

This allows operations such as playback to be controlled.

Then, these first and second VTRs (5) and (6
) reproduces and outputs the video signal to the third VTR (
7) is supplied to the video signal input terminal. This third VTR
The control terminal (7) is also connected to the system controller (
2), so that operations such as recording and playback can be controlled by the system controller (2). The video camera (4), the first VTR (5), the second VTR (6), and the third VTR (7) are
The system controller (2) sends operating signals indicating the operating status.
The system controller (2)
) allows you to understand the operating status of each device.

In addition, the system controller (2) supplies display data such as characters and numbers to the third VTR (7), and the third VTR (7) outputs the display data such as characters and numbers. This allows characters, two numbers, etc. based on display data to be superimposed on the video signal supplied from the VTR (5) or (6).

The video signal reproduced and output by this third VTR (7) is supplied to a monitor television receiver (8) and a video printer (9), and is reproduced by the monitor television receiver (8). It is possible to receive the recorded video and to make a hard copy of the reproduced video using the video printer (9).

Next, the operation of monitoring by the monitoring device of this example will be explained with reference to the operation timing diagram of FIG.

First, the "R" button of the operation key (2a) connected to the system controller (2) is pressed to change the operating mode of this device to the monitoring mode. In this monitoring mode, the video camera (4) starts photographing the production line (1) under the control of the system controller (2) and outputs the photographed video signal.

And the first. Second and third VTR (5), <
6) and (force) enters the recording pause state under the control of the system controller (2). Note that each VTR (5)
, (6) and (7) are loaded with video tapes in advance.

In this state, the rpJ button of the operation keys (2a) is pressed to instruct the system controller (2) to start monitoring. This instruction causes the system controller (2) to select the first V T
Instruct R(5) to cancel the recording pause (i.e. start recording),
Start recording the video signal supplied from the video camera (4). This recording is continued unless the sensor (3) that detects the flow of the manufacturing line (1) detects an abnormality.

Then, when the sensor (3) detects a stoppage of the flow in the production line (1), this sensor (3) outputs an alarm signal. This alarm signal is sent to the system controller (2)
The system controller (2) instructs the first VTR (5) to stop recording and also instructs the second VTR (6) to release the recording pause (that is, start recording). , the second VTR (6) starts recording the video signal supplied from the video camera (4).

Then, while recording is being performed by this second VTR (<6), the system controller (2) controls the videotape loaded in the first VTR (5) in advance. Rewind by a predetermined amount (for example, 1 minute).

When this rewinding is completed, playback is immediately started from this rewinding point, and the third VTR (7)
to cancel the recording pause (that is, start recording), and
The video signal reproduced and supplied from the TR (5) is recorded (dubbed).

Then, when the first VTR (5) plays back a predetermined amount of the videotape, the system controller (2)
), this reproduction is stopped and the recording pause state is caused, and the recording of the third VTR (7) is stopped and the recording pause state is caused.

In this state, unless the sensor (3) detects an abnormality,
The second VTR (6) continues recording the video signal from the video camera (4). And this second VT
Sensor (3) is connected to the production line (1) during recording by R (6).
) detects the stoppage of the flow of the second VTR (6), an alarm signal as the detection output is supplied to the system controller (2), and the system controller (2)
) to stop recording, and the first VTR (5
) to cancel the recording pause (that is, start recording), and send the video signal supplied from the video camera (4) to the first VTR (
5) Start recording.

While the first VTR (5) is recording, the system controller (2) controls the videotape loaded in the second VTR (6) to a predetermined position. Rewind by a minute (for example, 1 minute). When this rewinding is completed, playback is immediately started from this rewound point, and the third VTR (7) is instructed to release the recording pause (that is, to start recording), and the second VTR (7) is
Recording of the video signal reproduced and supplied from T R (6) (
dubbing).

When the second VTR (6) rewinds the video tape and plays back a predetermined amount, the system controller (2)
) to stop this playback and enter a recording pause state, and also stop the recording of the third VTR (71) to enter a recording pause state.

In this way, every time the sensor (3) detects an abnormality,
The first VTR (5) and second VTR (6) alternately record the video signal from the camera (4), and one VTR (5) or (6) records this video signal. While recording the video signal from the camera (4), the other VTR (6) or (
In step 5), the video recorded immediately before the abnormality detection is played back and recorded on the third VTR (7).

Then, by pressing the rpJ phase of the operation key (2a) while recording is being performed in this manner, this monitoring operation is temporarily stopped. That is, when this rpJ button is pressed, the video camera (4) stops shooting and outputs the video signal under the control of the system controller (2), and each VTR (5), (6) and (7) are all placed in a recording pause state. Then, by pressing the "P" button again, this monitoring operation is restarted.

In other words, when the PJ button is pressed again, the video camera (4)
Under the control of the system controller (2), photography of the production line (1) is restarted and a video signal is output. Then, the recording pause of the first VTR (5) that stopped the recording operation when the "P" button was pressed last time is released, and recording of the video signal output by the video camera (4) is resumed.

When finishing the monitoring operation, press the operation key (2a
) Press rEJ sum. When this "EJ" button is pressed, the system controller (2) cancels the monitoring mode and starts the projection operation of the video camera (4) and each VTR.
All operations (5), (6) and (7) (recording, playback).

pause state). After finishing the monitoring operation by pressing the rEJ button, each VTR (5).

The operation switches (not shown) included in (6) and (7) allow each device to be operated independently.

In this state, for example, the videotape loaded in the third VTR (7) is rewound, played from the beginning, and the reproduced video is received by the monitor television receiver (8), so that the production line ( 1) It is possible to monitor images when an abnormality occurs. That is, the third VTR (7
The videotape loaded in the production line (1) shows the situation when an abnormality occurred on the production line (1) and the flow stopped.
Since only the video signal of the situation 1) is recorded, the abnormal state of the manufacturing line (1) can be seen as a video image received by the monitor television receiver (8). Further, the video printer (9) prints based on the video signal obtained by putting the third VTR (7) into the playback state, thereby obtaining a hard copy of the video in this abnormal state.

In this way, according to the monitoring device of this example, the third VTR
(7), only abnormal conditions on the manufacturing line (1) are reliably and efficiently recorded, and by simply turning this third VTR (7) into playback mode after monitoring, only the abnormal conditions can be recorded in a short time. You can check everything without any omissions.

In addition, from the first and second VTRs (5) and (6) to the third
When dubbing to the third VTR (7), display data is supplied from the system controller (2) to the third VTR (7), and the color temperature data measured by the sensor (3) at the time of abnormality occurrence and the color temperature data when the abnormality occurs are displayed. The time etc. may be superimposed and recorded on the video signal being recorded by the third VTR (71).
By connecting a computer that compiles data to 2), the computer can compile the time from when an abnormality occurs to when it returns to normal, the number of times an anomaly occurs, and the like.

In addition, in the above embodiment, the VT is recorded every time an abnormality occurs.
I tried to switch R, but the VT which records every predetermined time
R may be switched.

FIG. 3 is a diagram showing an example of the operation timing in this case, and will be described in detail below.

First, even in this case, first the system controller (2)
Press the "R" button of the operation key (2a) connected to the device to change the operating mode of the device to the monitoring mode. In this monitoring mode, the video camera (4) starts photographing the production line (1) under the control of the system controller (2) and outputs the photographed video signal. The first VTR (5) is a system controller (
By the control in 2), the recording pause state is entered.

In this state, the "P" button of the operation key (2a) is pressed to instruct the system controller (2) to start monitoring. This instruction causes the system controller (2) to select the first V T
The video tape loaded in the first VTR (5) is instructed to release the recording pause (that is, start recording), and starts recording the video signal supplied from the video camera (4). Continue recording until the end of the tape is reached.

Then, when the sensor (3) detects a stoppage of the flow in the production line (1), this sensor (3) outputs an alarm signal. This alarm signal is sent to the system controller (2)
, the system controller (2) continuously outputs a count value of a tape counter (not shown) that counts the tape running amount of the first VTR (5), and the system controller (2) reads this count value. Remember the value. In this way, the system controller (2) stores a count value each time an alarm signal is supplied.

For example, the production line (
1) is stopped, the system controller (
2) stores the count value twice. The following description will be made assuming that this two-time count value is stored.

When the videotape loaded in this first VTR (5) reaches the tape end, this first VTR (5)
The R (5) stops recording and starts recording by the second VTR (6) under the control of the system controller (2), and the second VTR of the video signal supplied from the video camera (4). Start recording on TR(6).

When the system controller (2) stores the count value as described above, the videotape loaded in the first VTR (5) is rewound under the control of the system controller (2). At this time, the system controller (2) performs rewinding by a predetermined amount (for example, one minute) more than the initially stored count value, and puts the third VTR (7) in a recording pause state.

Immediately after this rewinding is completed, the system controller (2) controls the first VTR (5).
at the same time, the recording pause of the third VTR (7) is released (that is, the recording starts), and the first VTR (7)
Dubbing is performed from R(5) to the third VTR(7). Then, when the count value of the tape counter of the first VTR (5) reaches the value initially stored by the system controller (2), the system controller (2)
The reproduction is stopped by the control of the third V T
Put R(7) into recording pause state. Then, the system controller (2) moves the first V T to a position a predetermined amount before the count value stored for the second time
Fast-forward the videotape loaded in R(5). When this fast-forwarding is completed, the first VTR (5) is immediately put into the playback state under the control of the system controller (2), and the recording pause of the third VTR (7) is canceled (i.e., the recording pause is stopped). start) and start the first VTR.
(5) to the third VTR (7). When the count value of the tape counter of the first VTR (5) reaches the value stored for the second time by the system controller (2), the playback is stopped under the control of the system controller (2) and the tape counter of the third VTR (5) is stopped. VTR
(7) Put the device into a recording pause state.

Then, the videotape loaded in the first VTR (5) is rewound to the beginning. Note that when the system controller (2) has no memory of count values at all, after recording up to the end of the tape, rewinding to the beginning is immediately performed.

In this way, from the first VTR (5) to the third VTR
During the dubbing operation to the VTR (7), the video signal captured by the video camera (4) is being recorded to the second VTR (6) as described above. Therefore, when an alarm signal is supplied from the sensor (3) to the system controller (2) during recording with this second VTR (6), the tape counter of the second VTR (6) at this time is Read the count value and send it to the system controller (2)
This count value is stored in the .

When the videotape loaded in the second VTR (6) reaches the tape end, the second VTR (6)
stops recording and the system controller (2)
The control causes the first VTR (5) to start recording, and the first VTR (5) to start recording the video signal supplied from the video camera [4].

Then, the system controller (2) connects the second VTR (
When the count value of step 6) is stored, the videotape loaded in the second VTR (6) is rewound under the control of the system controller (2). At this time, rewinding is performed by a predetermined amount more than the count value stored by the system controller (2). When this rewinding is completed, the system controller (2) immediately puts the second VTR (6) into the playback state and releases the recording pause of the third VTR (71).
In other words, start recording) and start recording from the second VTR (6) to the third VTR (6).
dubbing to the VTR (7). and,
When the count value of the tape counter of the second VTR (6) reaches the value stored by the system controller (2),
The playback is stopped under the control of the system controller (2), and the third VTR (7) is placed in a recording pause state. Then, the videotape loaded in the second VTR (6) is rewound to the beginning. Incidentally, if the system controller (2) does not have any memory of the count value of the second VTR (6), after recording up to the end of the tape, it immediately rewinds to the beginning.

In this way, the first VTR (5) and the second V"
1R (6) and the second VTR (6), while recording the loaded videotape up to the tape end alternately.
) while recording the current state of production line (1), the first VTR
(5) The video recorded during the abnormality on the production line (1) is dubbed to the third VTR (7), and then the first VTR
While the current status of the production line (1) is being recorded on the R (5), the video of the abnormality on the production line (1) recorded on the second VTR (6) is transferred to the third VTR (7). Dahing to.

When finishing the monitoring operation, press the operation key (2a
) Press rEJ 60. When this rEJsO is pressed, the system controller (2) cancels the monitoring mode, and controls the shooting operation of the video camera (4) and each V T
All operations of R(5), (61 and (7)) are stopped so that each device can be operated independently.

Even in the case of this example in Figure 3, the video recorded on the videotape loaded in the third VTR (7) was taken during an abnormality on the production line (1), as in the example in Figure 2. By rewinding and playing back the videotape of this third VTR (7), the monitor television receiver (8) can display the image of when an abnormality occurred on the manufacturing line (1). Can be monitored. It is easy to understand that the example shown in FIG. 3 also provides the same functions and effects as the example shown in FIG.

In the above embodiment, the monitoring device was used as a manufacturing line, but for example, an infrared sensor that detects the approach of a person is connected to the system controller, and when this infrared sensor detects the approach of a person, an alarm signal is sent to the system controller. It is also possible to provide a crime prevention monitoring device that automatically monitors intruders and the like. Further, although a VTR is used as the video signal recording means, it goes without saying that a video signal recording device using other recording media such as an optical disc may be used. Furthermore, the present invention is not limited to the above-mentioned embodiments,
Of course, various other configurations can be taken without departing from the gist of the present invention.

〔Effect of the invention〕

According to the monitoring device of the present invention, only images when an abnormality occurs in the monitoring place are reliably recorded in the third video signal recording means (7), and there is an advantage that only the abnormal state of the monitoring place can be checked efficiently without omitting anything. There is.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing one embodiment of the monitoring device of the present invention, FIG. 2 is a timing diagram for explaining the example in FIG. 1, and FIG. 3 is a timing diagram showing another embodiment of the monitoring device of the present invention. It is a diagram. (1) is the production line, (2) is the system controller,
(4) is a video camera, (5) is the first VTR1 (6)
The second VTR 1 (7) and the third VTR 1 (8) are monitor television receivers.

Claims (1)

[Scope of Claims] A video camera for photographing a monitoring location, first and second video signal recording means for recording video signals photographed by the video camera, and the first and second video signal recording means for recording video signals photographed by the video camera. It has a third video signal recording means for dubbing the recorded video signal, and a controller for controlling the first, second and third video signal recording means, and under the control of the controller, the first and the third video signal recording means are controlled. The second video signal recording means alternately and continuously records the photographed video signals of the monitoring location, and during the recording by the first or second video signal recording means, the second or first video signal recording is performed. A monitoring device characterized in that a video signal of an abnormal location among the video signals recorded in the means is supplied to the third video signal recording means and is dubbed.