JP2704484B2 - Monitor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor for displaying an analog signal waveform on a television screen. Although the present invention has been developed for monitoring automatic manufacturing equipment, the present invention 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. Illustrative of these uses are medical phenomena observation and measurement devices, athlete training devices, and others.

[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 a device as expected and causes a trouble, the phenomenon is photographed with a video camera to pursue the cause of the trouble. An apparatus for facilitating the operation is disclosed in Japanese Patent Application Laid-Open No. 2-16891. The apparatus of the present invention is an improvement of the conventional apparatus so that the analysis of the cause of the failure can be further ensured.

A device for displaying an analog signal obtained as a sensor output on a digital oscilloscope as a waveform signal with the passage of time is disclosed in Japanese Patent Laid-Open No. 4-33287.
No. 3 discloses this. Further, techniques for superimposing and displaying a waveform signal on a display screen of a standard television signal are disclosed in JP-A-51-85623 and JP-B-3-17437.

In a continuous production facility, for example, a disposable diaper production facility, various processing machines operate in conjunction with computer control, but the supplied materials and semi-finished products do not flow as intended over the equipment and obstruct. If this occurs, take a picture of this with a video camera, repeatedly display the captured signal on a video recording device, pursue the cause, and take action to remove the cause when it is found. Is a very effective technique. In such a manufacturing facility, sensors for detecting the passage of a semi-finished product are arranged in various places, and the outputs of the sensors are used as trigger signals for control. Sensors for detecting temperature, speed, and other information are arranged at key points in these manufacturing facilities, and the outputs of these sensors are configured to be continuously recorded.

[0005]

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

[0006] The present invention, together with the video camera recording,
It is an object of the present invention to provide a device capable of displaying waveforms of various sensors so that a person who handles the device can simultaneously evaluate the waveforms. SUMMARY OF THE INVENTION 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 on a display screen of the video camera as a graph or a waveform. Another object of the present invention is to provide an apparatus for promptly analyzing the cause of an abnormality in a monitored system when the abnormality occurs.

[0007]

Means for Solving the Problems The present invention includes a plurality of video cameras, the monitor apparatus and an image monitor of the standard television standard for displaying an output image signal of the video camera, the subject of the video camera A plurality of sensors arranged in association with each other, level adjusting means for normalizing the levels of the plurality of sensor outputs, and an analog-to-digital converter for cyclically sampling the output of the level adjusting means and converting the output to a digital signal Circuit, a control circuit that receives the digital signal, and the plurality of video signals.
A synthesizing circuit for synthesizing the output image signal of the camera ,
The control circuit includes a memory for recording the digital signal as time passes, a waveform signal generating means for transmitting the contents of the memory as a waveform signal of a standard television standard, and the plurality of sensor outputs displayed in parallel. Hand to let
And a synthesizing circuit , wherein the synthesizing circuit includes a
The output waveform signal is the output image signal of the video camera.
It is characterized by including means for combining .

Further, the output image signal of said combining circuit is connected to a video recording device, video recording device is two,
One of them is desirably controlled by a control means for continuously recording, and the other is controlled by a means for repeatedly reproducing the contents recorded in a designated time section by operation.

[0009] In addition, the present onset Ming, target a plurality of sensors output
Waveform signal to be transmitted as a quasi-television standard waveform signal
In the generator, a plurality of analog input terminals, a plurality of level adjusting means for normalizing the signal level of the analog input terminals, and an analog for cyclically sampling the output of the level adjusting means and converting the output to a digital signal A digital conversion circuit, and a control circuit including a memory for receiving the digital signal and 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 a standard television standard The control circuit includes control means for a video recording device, and the control means for the video recording device includes:
The control circuit includes means for setting a recording start time and a recording end time according to an operation input, and further includes means for setting a time axis of a display waveform according to the operation input.

[0010]

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

In this way, by displaying the output detected by various sensors of a manufacturing facility or a distribution facility as a graph or a waveform together with the recording of the video camera, the cause of the equipment failure can be immediately pursued, and the occurrence of the failure can be prevented. Effective measures can be taken.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a basic configuration of an 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 an output image signal of a plurality of video cameras 1-1 to 1-n. 1-3-n and the sensors 3-1 to 3-
level adjusting means 4 for normalizing the level of the output of n, an analog / digital converting circuit (hereinafter referred to as an A / D converting circuit) 5 for converting the output of the level adjusting means 4 into a digital signal, and inputting the digital signal. 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 content of the memory 6a as a waveform signal of a standard television standard. 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 3-3.
-N is provided with a sampling means 5a for cyclically sampling the output of the plurality of sensors 3-1 to -3.
3-n means for displaying the outputs in parallel, two video recording devices 8a and 8b are connected to the output image signal, one video recording device 8a performs continuous recording, and the other The video recording device 8b is controlled by a control unit that repeatedly reproduces the contents recorded in a designated time section by operation.

The plurality of sensors 3-1 to 3-n are respectively arranged at required locations on a production line or a distribution facility to be measured on a production line. Measurement such as displacement of the set position of the assisting tool is performed. Also, a plurality of video cameras 1-1 to 1-1
According to 1-n, the processing state, the operation state of the machine, and the like are imaged and transmitted as an image signal. The transmitted image signal indicates that the operation status of production equipment, logistics equipment, and the like is a video recording device 8.
a, the image in which the driving situation before and after the abnormal condition is recorded is partially reproduced from among the images recorded in the video recording device 8a by a signal notifying the abnormality, and the image is recorded in another video recording device 8b. By re-recording, only the images before and after the abnormal time are collectively recorded.

The output level of the measurement signal from each of the sensors 3-1 to 3-n is normalized 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 contents of the memory 6a to the synthesizing circuit 7 as a waveform signal of the standard television standard. The synthesizing circuit 7 receives image signals from the video cameras 1-1 to 1-n, and also inputs the contents recorded in the memory 6a from the control circuit 6 and synthesizes or switches and connects them to form a standard television. The image is output to the video recording device 8a as an output image signal (NTSC signal) of John.

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 generates a control signal for displaying the outputs in parallel. To the video recording device 8a. The video recording device 8a continuously performs recording according to the control signal, and the video recording device 8b repeatedly reproduces the content recorded in the designated time section every time an operation input is received, and displays the content on the image monitor 2.

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

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

A waveform signal generator 1 according to an embodiment of the present invention.
0 indicates a plurality of analog input terminals 11-1 to 11-4,
A plurality of level adjusters 4-1 to 4-1 for normalizing the signal levels of the analog input terminals 11-1 to 11-4, respectively.
4-4 and A for cyclically sampling the outputs of the level adjusting means 4-1 to 4-4 and converting them 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 over time, and a waveform signal generating means 6b for transmitting the contents of the memory 6a as a waveform signal of a standard television standard; And a control circuit 6. The control circuit 6 includes a video recording device control means 12. The video recording device control means 12 includes means for setting a recording start time and a recording end time according to an operation input. The control circuit 6 includes means for setting the time axis of the display waveform according to the operation input.

The control circuit 6 includes a video recording device 8
a video control switch 14 for operating and inputting the control signals a and 8b, a time axis setting switch 15 for setting the time axis of the display waveform by operation, a first recording time setting switch 16, and a second recording time setting switch 17. Frame memories 21 and 22 for temporarily holding and rearranging the waveform signal from the waveform signal generating means 6b are connected,
The video memories 8a are stored in the frame memories 21 and 22.
Is provided with a waveform display circuit 23 for sending out via an output terminal 24. Furthermore, the control circuit 6 has 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 supplied to level adjusting means 4-1 to 4-
At 4, the level is adjusted to a level within a range that can be accepted by the A / D conversion circuit 5, and is 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 to 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 out to the video recording device 8a via the connection terminal 27.

Here, the operation of waveform display will be described with reference to FIG. 2 as an example in which four analog signals are input. FIG. 3 is a flowchart 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. FIG. 3 is a diagram illustrating a recording example 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, each analog input signal is applied to the corresponding level adjusting means. 4-1 to 4-4
Then, the sampling period input by operating the time axis setting switch 15 is set as shown in FIG. At this time, when the power is set or the first recording time setting switch 16 and the second recording time setting switch 17 are changed, the frame is written into the frame memories 21 and 22.

After these operations are performed, or when a dubbing operation is being performed, the input analog signal is sampled by the sampling means 5a, converted into a digital signal by the A / D conversion circuit 5, and converted into a digital signal on the display side. As shown in FIG. 5, one point for each channel is plotted in the frame memory 21 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 deleted one by one. 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 the number of plots does not reach 400, the plot point of the frame memory 21 on the display side is shifted to the right, and the erase point of the frame memory 22 on the non-display side is shifted to the right. Note that the composition may be divided display shown in FIG. 10 instead of the superposition illustrated in FIG.

In such an operation, as shown in FIG. 7, for example, an image in which the lotion is injected into the container is displayed, 3ch is a waveform showing a change in flow rate, and 4ch is a temperature. In the case of a waveform, if a decrease in temperature is indicated at the point indicated by arrow A, the flow rate decreases as indicated by arrow B, and therefore, a predetermined liquid is injected into the container indicated on the screen. You can see that it is not. in this way,
The sensor output generated by the subject of the video camera can be simultaneously displayed as a waveform on the display screen, and the image can be recorded and played back. It will be easier.

Next, the control operation of the video recording devices 8a and 8b will be described. FIG. 8 is a flowchart showing the flow of the operation of the video recording apparatus according to the embodiment of the present invention, and FIG. 9 is a view for explaining image collection of the video recording apparatus according to the embodiment of the present invention.

A system check is performed, the above-described waveform display operation state is set, and the video control switch 14 provided in the control circuit 6 shown in FIG. 2 is operated, so that 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
It is determined whether or not 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, returns to the state before displaying the waveform, and repeats the same operation. Also, when the video control switch 14 is not operated and the V flag does not indicate “1”, the operation returns to the operation before displaying the waveform.

If the video recording device 8a is not recording,
After recording, the V flag is set and the operation returns to the operation before displaying the waveform. If the video recording device 8a is recording and a trigger indicating an occurrence of an abnormality is input from the trigger input circuit 26, recording is performed until the time indicated by the second recording time setting switch 17 shown in FIG. Becomes afterwards,
The video recording device 8a has a second recording time setting switch 17
The rewinding is performed until a time obtained by adding the post-time set by the first recording time setting switch and the previous time set by the first recording time setting switch, and if the reproduction for the time is performed, the video recording device 8a After the operations of Steps 8b and 8b are stopped, the video recording device 8a is set to the recording state, and returns to the operation before displaying the waveform. If the reproduction for the time has not been performed, the video recording device 8a performs the reproduction, and the video recording device 8b performs the recording. When the tape ends, the video recording device 8
b stops, the V flag is reset, and the operation returns to the operation before displaying the waveform.

By such an operation, as shown in FIG. 9, the video recording device 8a continuously performs recording, and during this time, when any of the sensors 3-1 to 3-4 detects the occurrence of an abnormality, the detection signal is output. Is input to the trigger input circuit 26 via the trigger input terminal 25, and the trigger input circuit 26 generates a trigger and outputs the trigger to the video recording device 8a. In response to this trigger, the video recording device 8a causes the first recording time setting switch 16 and the second recording time setting switch 17
Only the images in the time zone set in the step (1) are sequentially recorded on the video recording device 8b.

[0031]

As described above, according to the present invention, in order to pursue the cause of the occurrence of a trouble in a manufacturing facility or a logistics facility in a manufacturing process, and to prevent a recurrence, a measurement detected by a sensor on an image by a video camera. A continuous waveform of values can be displayed, and images of a predetermined time before and after the occurrence of an abnormality can be taken out and recorded on another tape,
This has the effect of greatly reducing the analysis time for pursuing the cause.

[Brief description of the 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 a waveform signal generator according to the embodiment of the present invention.

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

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

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

FIG. 6 is a diagram illustrating a recording example of a frame memory on a non-display side in the embodiment of the present invention.

FIG. 7 is a view 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 apparatus in the embodiment of the present invention.

FIG. 9 is a view for explaining image collection of the video recording apparatus in the embodiment of the present invention.

FIG. 10 is a diagram showing an example of a divided display screen according to 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 adjustment means 5 A / D conversion circuit 5a Sampling means 6 Control circuit 6a Memory 6b Waveform signal generation Means 7 Synthesis 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 17 First 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)

(57) [Claims] 1. A monitor device comprising: a plurality of video cameras; and an image monitor of a standard television standard for displaying an output image signal of the video camera, wherein a plurality of video cameras are arranged in association with a subject of the video camera . <br/> A sensor, level adjusting means for respectively standardizing the levels of the plurality of sensor outputs, and analog / digital for cyclically sampling the output of the level adjusting means and converting it into a digital signal A conversion circuit, a control circuit that receives the digital signal, and an output of the plurality of video cameras.
A synthesizing circuit for combining the force image signal, the control circuit includes a memory for recording the digital signal over time, a waveform signal generating means for delivering the contents of the memory as waveform signal of a standard television standard And means for displaying the plurality of sensor outputs in parallel.
And the synthesizing circuit includes a waveform output by the waveform signal generating means.
Means for combining a signal with an output image signal of the video camera
A monitor device comprising: 2. The monitor device according to claim 1, wherein a video recording device is connected to an output of the synthesizing circuit . 3. A video recording apparatus is two, one of which performs a continuous recording, according to claim 2 other is controlled by a control means for repeatedly reproducing the operation was recorded in the specified time interval the contents The monitoring device according to any one of the preceding claims. 4. The video recording device according to claim 1 , wherein
Control means of the video recording apparatus, the control means
Means for setting the recording start time and recording end time
In addition, this control circuit has a display wave according to the operation input.
4. The method according to claim 2, further comprising means for setting a time axis of the shape.
Monitor device. 5. A video camera, comprising : a plurality of video cameras;
Image of the standard television standard that displays the output image signal of the
An image monitor, comprising: a plurality of video monitors arranged in relation to a subject of the video camera;
Sensor and analog signal of multiple sensor outputs as standard
Waveform signal output as TV standard waveform signal
A raw device and a signal output from the waveform signal generating device.
Combining circuit for combining the output image signal of a plurality of video camera
With the door, the waveform signal generator includes a plurality of analog input terminals,
A plurality of level adjusting means for normalizing the level of the signal at the analog input terminal; an analog / digital conversion circuit for cyclically sampling the output of the level adjusting means and converting the output to a digital signal; and a control circuit including a waveform signal generating means for transmitting a waveform signal of a standard television standard memory and the contents of the memory for recording the digital signal over time, to the control circuit, the combining circuit includes control means connected video recording device, the control means of the video recording apparatus includes means for setting a recording start time and recording end time according to the operation input, the further control circuit in accordance with an operation input Moni, characterized in that it comprises a means for setting a time axis of the displayed waveform
Data device .