JPH0746468A - Monitoring device - Google Patents

Abstract

PURPOSE:To reduce the analysis time by recording a waveform signal detected by a sensor together with picture information of a monitor camera and displaying them on a display screen simultaneously. CONSTITUTION:An output picture signal of video cameras 1-1-1-n is recorded by a video recorder 8a and reproduced by a picture monitor 2 at any time as required. An output of sensors 3-1-3-n arranged with respect to an object of each camera is stored in a memory 6a as time series data via an A/D converter circuit 5. A waveform signal generating means 6b converts the time series data in the memory 6a into a waveform picture signal of the typical TV standards and sends the converted signal to the video recorder 8a. Thus, the monitor picture and the waveform picture at the same time are reproduced and observed overlappingly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor device which also displays an analog signal waveform on a television screen. Although the present invention was developed for monitoring automatic manufacturing equipment, it can be widely used for monitoring a phenomenon in which an analog signal for measurement is simultaneously generated in a subject of a video camera. Examples of their usage are a medical phenomenon observation and measurement device, an athlete training device, and the like.

[0002]

2. Description of the Related Art In a continuous automatic manufacturing facility, when a material or a semi-finished product does not flow on the equipment as planned and causes an obstacle, the phenomenon is photographed by a video camera to investigate the cause of the obstacle. A device for facilitating is disclosed in JP-A-2-16891. The device of the present invention is an improvement of this prior art device so that the analysis of the cause of failure can be made more reliable.

A device for displaying an analog signal obtained as a sensor output on a digital oscilloscope as a waveform signal over time is disclosed in Japanese Patent Laid-Open No. 4-33287.
It is disclosed in Japanese Patent No. Further, a technique for superposing and displaying a waveform signal on a standard television signal display screen is disclosed in JP-A-51-85623 and JP-B-3-17437.

In a continuous manufacturing facility, for example, a disposable diaper manufacturing facility, various processing machines operate in association with each other under computer control, but supplied materials and semi-finished products do not flow on the equipment in a scheduled manner, which causes obstacles. If this happens, shoot this with a video camera, repeatedly display the taken signal on the video recording device, pursue the cause, and if the cause is found, add the operation to remove the cause. Is a very effective method. In such a manufacturing facility, sensors for detecting the passage of semi-finished products are arranged at various places, and the sensor output is used as a control trigger signal. Further, sensors for detecting information such as temperature, speed and the like are arranged at important points of these manufacturing facilities, and outputs of these sensors are continuously recorded.

[0005]

In the above manufacturing facility, when a failure occurs, it is necessary to observe the recording of the video camera and simultaneously evaluate these sensor recordings in order to pursue the cause of the failure and prevent recurrence. Is extremely effective in taking measures for.

The present invention relates to the recording of a video camera,
An object of the present invention is to provide a device capable of displaying waveforms of various sensors so that a person who handles the device can simultaneously evaluate the waveforms. It is an object of the present invention to provide a device for simultaneously displaying a sensor output generated on a subject of a video camera as a graph or a waveform on the display screen of the video camera. A further object of the present invention is to provide an apparatus for promptly analyzing the cause when an abnormality occurs in the monitored system.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for displaying the recording of a video camera and the waveforms of various sensors so that they can be evaluated at the same time. A first aspect thereof is a video camera and this video. In a monitor device including an image monitor of a standard television standard for displaying an output image signal of a camera, a sensor arranged in relation to a subject of the video camera and a level adjusting means for standardizing a level of the sensor output. And an analog-digital conversion circuit for converting the output of the level adjusting means into a digital signal, and a control circuit for receiving the digital signal as an input. The control circuit records the digital signal as time passes. A memory and a waveform signal generating means for transmitting the contents of this memory as a waveform signal of the standard television standard. See, characterized by comprising a combining circuit for combining the waveform signal to the output image signal.

The plurality of video cameras are provided with a synthesizing circuit for synthesizing output signals of the plurality of video cameras, the plurality of sensors are provided, and the plurality of sensor outputs are cyclically provided to the analog-digital conversion circuit. And sampling means, the control circuit includes means for displaying the plurality of sensor outputs in parallel, a video recording device is connected to the output image signal, and there are two video recording devices, one of which is It is desirable that the recording is performed continuously, and the other is controlled by the control means that repeatedly reproduces the content recorded in the designated time interval by an operation.

Further, a second aspect of the present invention resides in the generation of the waveform signal, and the apparatus configuration thereof has a plurality of analog input terminals and a plurality of levels for standardizing the signal levels of the analog input terminals. The adjusting means, an analog-digital conversion circuit for cyclically sampling the output of the level adjusting means and converting it into a digital signal, a memory for taking the digital signal and recording the digital signal with the passage of time, and a memory for storing the digital signal. A control circuit including a waveform signal generating means for transmitting the content as a waveform signal of a standard television standard, the control circuit including a control means of a video recording device, and the control means of the video recording device includes an operation input. The control circuit further includes means for setting a recording start time and a recording end time according to Characterized in that it comprises a means for setting a time axis of the displayed waveform according forces.

[0010]

The output level of the sensor arranged in relation to the subject of the video camera is standardized, and the output is converted into a digital signal. This digital signal is recorded in a memory as time passes, and the contents of this memory are sent out as a waveform signal of the standard television standard. The output waveform signal is combined with the output image signal of the video camera and displayed on the standard image monitor.

In this way, the output detected by various sensors such as manufacturing equipment or physical distribution equipment is displayed as a graph or a waveform together with the record of the video camera, so that the cause of equipment failure can be promptly investigated and the occurrence of failure can be prevented. Can take effective measures for.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing the basic configuration of the embodiment of the present invention.

In the embodiment of the present invention, a plurality of video cameras 1-
1 to 1-n and the plurality of video cameras 1-1 to 1-n
And an image monitor 2 of a standard television standard for displaying the output image signal of 1., and as a feature of the present invention, a plurality of sensors 3-arranged in association with the subjects of the plurality of video cameras 1-1 to 1-n. 1-3-n and this sensor 3-1-3-
Level adjusting means 4 for normalizing the output level of n, an analog / digital converting circuit (hereinafter referred to as A / D converting circuit) 5 for converting the output of the level adjusting means 4 into a digital signal, and this digital signal are input. The control circuit 6 includes a memory 6a for recording the digital signal as time passes, and a waveform signal generating means for transmitting the contents of the memory 6a as a waveform signal of the standard television standard. 6b, and a synthesizing circuit 7 for synthesizing the waveform signal with the output image signal.
Further, the A / D conversion circuit 5 includes a plurality of sensors 3-1 to 3-1.
Sampling means 5a for cyclically sampling the output of -n is provided, and the control circuit 6 has the plurality of sensors 3-1 to 3-1.
3-n outputs are displayed in parallel, and two video recording devices 8a and 8b are connected to the output image signal, one video recording device 8a continuously recording, and the other video recording device 8a. The video recording device 8b is controlled by the control means that repeatedly reproduces the contents recorded in the designated time section by an operation.

The plurality of sensors 3-1 to 3-n are arranged at required locations of the production facility or the physical distribution facility to be measured on the production line, for example, the machine speed, the air pressure, the product and the production. The displacement of the set position of the auxiliary tool is measured. In addition, a plurality of video cameras 1-1 to
The processing state, the operation state of the machine and the like are picked up by 1-n and sent as an image signal. The transmitted image signals are recorded by the video recording device 8 such as production equipment, physical distribution equipment and other operating conditions.
The image in which the driving situation before and after the abnormality is recorded is partially reproduced from the image recorded in the video recording device 8a by the signal continuously recorded in a and recorded in the other video recording device 8b. By re-recording, only the images before and after the abnormality are collectively recorded.

The output levels of the measurement signals from the sensors 3-1 to 3-n are standardized by the level adjusting means 4,
The signal is converted into a digital signal by the A / D conversion circuit 5 and input to the control circuit 6. In the control circuit 6, the digital signal is recorded in the memory 6a as time passes, and the waveform signal generating means 6b outputs the content of the memory 6a to the synthesizing circuit 7 as a waveform signal of the standard television standard. The synthesizing circuit 7 inputs the image signals from the video cameras 1-1 to 1-n, inputs the contents recorded in the memory 6a from the control circuit 6, synthesizes them, or switches and connects them to a standard television. It is output to the video recording device 8a as a John's output image signal (NTSC signal).

In the A / D conversion circuit 5, the sampling means 5a cyclically samples the outputs of the plurality of sensors 3-1 to 3-n, and the control circuit 6 displays the control signals in parallel. To the video recording device 8a. The video recording device 8a continuously records in accordance with this control signal, and the video recording device 8b repeatedly reproduces the contents recorded in the designated time interval each time an operation input is received and displays them on the image monitor 2.

The control circuit 6 has sensors 3-1 to 3-3.
The synchronization signal for the detection operation performed by -n is constantly transmitted, and when any of the sensors 3-1 to 3-n detects an abnormality, the abnormality detection signal is transmitted.

FIG. 2 is a block diagram showing a concrete structure of the waveform signal generator in the embodiment of the present invention.

Waveform signal generator 1 in the embodiment of the present invention
0 is a plurality of analog input terminals 11-1 to 11-4,
A plurality of level adjusting means 4-1 to standardize the signal levels of the analog input terminals 11-1 to 11-4, respectively.
4-4 and the outputs of the level adjusting means 4-1 to 4-4 are cyclically sampled and converted into digital signals A
Control including a D conversion circuit 5, a memory 6a for taking in the digital signal and recording the digital signal as time passes, and a waveform signal generating means 6b for transmitting the content of the memory 6a as a waveform signal of the standard television standard. The control circuit 6 includes a video recording device control means 12, and the video recording device control means 12 includes means for setting a recording start time and a recording end time in accordance with an operation input. The control circuit 6 includes means for setting the time axis of the displayed waveform according to the operation input.

The control circuit 6 also includes a video recording device 8
The video control switch 14 for inputting the control signals a, 8b, the time axis setting switch 15 for setting the time axis of the displayed waveform by operation, the first recording time setting switch 16, and the second recording time setting switch 17 Frame memories 21 and 22 that are provided for temporarily holding and rearranging the waveform signals from the waveform signal generating means 6b are connected,
From the frame memories 21 and 22, the video recording device 8a
Is provided with a waveform display circuit 23 for sending out through the output terminal 24. Further, the control circuit 6 includes a trigger input terminal 2
Trigger input circuit 2 that outputs the trigger signal input from 5
6 is connected. The video recording device control means 12 is provided with a connection terminal 27 connected to the video recording device 8a.

The analog signals input from the analog input terminals 11-1 to 11-4 are level adjusting means 4-1 to 4-.
At 4, the level is adjusted to a level within the range that can be accepted by the A / D conversion circuit 5, sampled by the sampling means 5a, and input to the A / D conversion circuit 5. The output digital signal converted by the A / D conversion circuit 5 is written into the frame memories 21 and 22 by the control circuit 6, rearranged, and output to the waveform display circuit 23. The waveform display circuit 23 converts the received digital signal into a television signal and sends it to the video recording device 8a via the connection terminal 27.

Now, the operation of waveform display will be described with reference to FIG. 2 by taking the case where four analog signals are input as an example. FIG. 3 is a flow chart showing the flow of the waveform display operation, and FIG.
Is a timing chart of a waveform display operation when four analog signals are input at a sampling period of 1 msec in the embodiment of the present invention, FIG. 5 is a diagram showing a recording example of a frame memory on the display side, and FIG. 6 is a diagram on the non-display side. It is a figure which shows the example of a recording of a frame memory.

When the four analog input signals from the analog input terminals 11-1 to 11-4 are input and the dubbing operation is not performed, the respective analog input signals are arranged correspondingly to the level adjusting means. 4-1 to 4-4
Is converted into a voltage of a constant level, and then the sampling cycle input by operating the time axis setting switch 15 is set as shown in FIG. At this time, when the power supply is set or the first recording time setting switch 16 and the second recording time setting switch 17 are changed, the writing of the frame to the frame memories 21 and 22 is performed.

After these operations are performed or during the dubbing operation, the input analog signal is sampled by the sampling means 5a, converted into a digital signal by the A / D conversion circuit 5, and displayed on the display side. In the frame memory 21, as shown in FIG. 5, one point for each channel is plotted left-justified. At the same time, as shown in FIG. 6, the display (old display) plotted in the non-display side frame memory 22 is erased point by point. Frame memory 21
Is sent to the waveform display circuit 23 and converted into a normal television signal (NTSC signal). The converted television signal is combined with the signals from the video cameras 1-1 to 1-n by the combining circuit 7 and displayed as shown in FIG.

When 400 points are plotted for each channel by the display-side frame memory 21, the display-side frame memory 21 and the non-display-side frame memory are switched. If 400 plots are not reached, the plot point of the display side frame memory 21 is shifted to the right, and the erase point of the non-display side frame memory 22 is shifted to the right. Note that the composition may be divided display as shown in FIG. 10 instead of the overlapping shown in FIG.

In such an operation, as shown in FIG. 7, for example, an image in which lotion is injected into a container is displayed, 3 ch is a waveform showing a change in flow rate, and 4 ch is temperature. In the case of a waveform, if the temperature decreases at the time indicated by the arrow A, the flow rate decreases as indicated by the arrow B, so that the predetermined liquid is injected into the container displayed on the screen. You can see that not. in this way,
The sensor output generated on the subject of the video camera can be displayed as a waveform on the display screen at the same time, and the image can be recorded and played back.Therefore, it is possible to observe the recording and take measures to investigate the cause of failure and prevent recurrence. It will be easy.

Next, the control operation of the video recording devices 8a and 8b will be described. FIG. 8 is a flow chart showing the operation flow of the video recording apparatus in the embodiment of the present invention, and FIG. 9 is a diagram for explaining the image acquisition of the video recording apparatus in the embodiment of the present invention.

A system check is performed, the above-mentioned waveform display operation state is set, the video control switch 14 provided in the control circuit 6 shown in FIG. 2 is operated, and the V (video) flag does not indicate "1". If the video control switch 14 is not operated and the V flag indicates "1", the video recording device 8a
Is being recorded. When the video control switch 14 is operated and the V flag indicates "1", the operation of the video recording device 8a is stopped,
The V flag is reset to return to the state before the waveform display, and the same operation is repeated. Also, when the video control switch 14 is not operated and the V flag does not indicate "1", the operation before the waveform display is returned.

If the video recording device 8a is not recording,
After recording, the V flag is set and the operation returns to the operation before the waveform display. When the video recording device 8a is recording and a trigger indicating an abnormality occurrence is input from the trigger input circuit 26, recording is performed until the later time set by the second recording time setting switch 17 shown in FIG. 9 and stopped. Becomes afterwards,
The video recording device 8a has a second recording time setting switch 17
When the rewinding is performed up to the time obtained by adding the rear time set by the above and the previous time set by the first recording time setting switch, and the reproduction for that time is performed, the video recording device 8a After the operations of 8 and 8b are stopped, the video recording device 8a is set to the recording state and returns to the operation before the waveform display. If the reproduction for that time is not being performed, the video recording device 8a is reproduced and the video recording device 8b is recorded. Video recorder 8 when the tape is finished
b is stopped, the V flag is reset, and the operation before the waveform display is returned to.

As a result of such an operation, the video recording device 8a continuously performs recording as shown in FIG. 9, and during this period, when any of the sensors 3-1 to 3-4 detects an abnormality, the detection signal thereof is output. Input to the trigger input circuit 26 via the trigger input terminal 25, and the trigger input circuit 26 generates a trigger and outputs it to the video recording device 8a. The video recording device 8a causes the trigger to cause the first recording time setting switch 16 and the second recording time setting switch 17 before and after the trigger.
Only the images in the time zone set in step 1 are sequentially recorded in the video recording device 8b.

[0031]

As described above, according to the present invention, the measurement detected by the sensor on the image by the video camera is performed for the purpose of pursuing the cause of the failure of the manufacturing facility in the manufacturing process, the physical distribution facility or the like and the prevention of the recurrence. It is possible to display a continuous waveform of values, and it is also possible to take out and record images of a predetermined time before and after the occurrence of an abnormality on another tape,
This has the effect of significantly reducing the analysis time for pursuing the cause.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a specific configuration of the waveform signal generator according to the embodiment of the present invention.

FIG. 3 is a flowchart showing the flow of waveform display operation in the embodiment of the present invention.

FIG. 4 is a timing chart of the waveform display operation in the embodiment of the present invention.

FIG. 5 is a diagram showing a recording example of a frame memory on the display side in the embodiment of the present invention.

FIG. 6 is a diagram showing a recording example of a frame memory on a non-display side according to an embodiment of the present invention.

FIG. 7 is a diagram showing an example of a composite screen in the embodiment of the present invention.

FIG. 8 is a flowchart showing an operation flow of the video recording device in the embodiment of the present invention.

FIG. 9 is a diagram for explaining image acquisition of the video recording device in the embodiment of the present invention.

FIG. 10 is a diagram showing an example of a split display screen in the embodiment of the present invention.

[Explanation of symbols]

 1-1 to 1-n video camera 2 image monitor 3-1 to 3-n sensor 4, 4-1 to 4-4 level adjusting means 5 A / D conversion circuit 5a sampling means 6 control circuit 6a memory 6b waveform signal generation Means 7 Composite circuit 8a, 8b Video recording device 10 Waveform signal generator 11-1 to 11-4 Analog input terminal 12 Video recording device control means 14 Video control switch 15 Time axis setting switch 16 First recording time setting switch 17th Second recording time setting switch 21, 22 Frame memory 23 Waveform display circuit 24 Output terminal 25 Trigger input terminal 26 Trigger input circuit 27 Connection terminal

Claims (5)

[Claims] 1. A monitor device comprising a video camera and an image monitor of a standard television standard for displaying an output image signal of the video camera, comprising: a sensor arranged in association with a subject of the video camera; The control circuit includes level adjusting means for standardizing the level of the sensor output, an analog / digital conversion circuit for converting the output of the level adjusting means into a digital signal, and a control circuit having the digital signal as an input. A synthesizing circuit including a memory for recording the digital signal as time passes and a waveform signal generating means for transmitting the contents of the memory as a waveform signal of the standard television standard, and synthesizing the waveform signal with the output image signal. A monitor device comprising: 2. A plurality of the video cameras, comprising a synthesizing circuit for synthesizing output signals of the plurality of video cameras,
A plurality of the sensors are provided, the analog-digital conversion circuit includes means for cyclically sampling the plurality of sensor outputs, and the control circuit includes means for displaying the plurality of sensor outputs in parallel. 1. The monitor device according to 1. 3. The monitor device according to claim 1, wherein a video recording device is connected to the output image signal. 4. A video recording device, wherein two video recording devices are provided, one of which records continuously, and the other is controlled by a control means which repeatedly reproduces the contents recorded in a designated time interval by an operation. Monitor device described. 5. A plurality of analog input terminals, a plurality of level adjusting means for respectively standardizing the levels of signals at the analog input terminals, and the outputs of the level adjusting means are cyclically sampled and converted into digital signals. An analog-digital conversion circuit, a memory which takes in the digital signal and records the digital signal with the passage of time, and a control circuit including a waveform signal generating means for transmitting the contents of the memory as a waveform signal of the standard television standard. The control circuit includes control means for the video recording device, and the control means for the video recording device includes means for setting a recording start time and a recording end time according to an operation input. A waveform including means for setting a time axis of a displayed waveform according to an operation input. Signal generator.