JPH0239692A - Monitoring equipment - Google Patents

Abstract

PURPOSE:To save transmission paths and to reduce costs by providing a synchronizing means which synchronizes an infrared video signal from an infrared ray television camera with a visible light video signal from a visible light television camera, and transmits the both video signals with the same transmission path. CONSTITUTION:An infrared video signal S10 and a visible light video signal S11 are both added to a moving device 4 control panel 8, and the infrared video signal S10 is synchronized with the visible light video signal S11 by a synchronizing means 17. Thereafter, mixing and masking processings are executed fro both signals S10 and S11 by a mixer/mask generator 22, and they are applied through signal transmission equipment 12 to a color monitor 16 of a console panel 13 as a hybrid signal S22 by a transmission cable 3. Thus, both infrared video A and visible light video B are displayed on the color monitor 16. In addition, the costs of the transmission path can be reduced.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a method for displaying a monitoring target imaged by an infrared television camera and a visible light television camera on a CRT (cathode ray tube) monitor, etc. Is it displayed on the device? The present invention relates to a monitoring device, and particularly relates to a monitoring device provided with a tuning means for synchronizing an infrared video signal from an infrared television camera to a visible light video signal from a visible light television camera.

(Prior art) In general, monitoring equipment is installed in industrial plants, offices, etc. such as nuclear power plants, petroleum/chemical plants, etc., and the monitoring targets are monitored using an infrared television camera and a visible light television camera. By displaying images on a CRT display device, the objects to be monitored are constantly monitored and inspected.

For example, in an industrial plant or the like, plant equipment and piping that are in operation are distributed at high or low temperatures, but this temperature distribution cannot be grasped by monitoring only images using visible light.

On the other hand, infrared television cameras can provide information on the temperature distribution of equipment and piping, but the problem with this infrared image in East Germany is that it is dramatically different from the visible light image that we are accustomed to, making it difficult to identify the subject. .

That is, for example, if there is only one point i? within a certain field of view? There is a hot spot, and the image on the monitor obtained by projecting this with an infrared television camera becomes a single bright spot on a dark surface. For this reason, even if the person before monitoring has sufficient <T preliminary knowledge about the object to be monitored, it is extremely difficult to identify which part is at high temperature.

Therefore, the C-wedge device displays infrared images on a monitor along with visible light images.

(Problems to be Solved by the Invention) However, such conventional surveillance equipment (U, as shown in Fig. 4 (△) and (r3) 1J), does not provide an infrared video signal transmitted to an infrared television camera. The transmission method is different due to the frequency difference between the visible light video signal obtained by the visible light television camera and the transmission channel (route) for infrared video signal transmission and visible light video signal transmission. Needs f-yannel.

That is, as shown in FIGS. 4(A) and ([3), both the infrared video signal and the visible light video signal have a video signal and a synchronization signal, and the mountain gorge image signal has a video signal every one cycle of the synchronization signal. Information is converted into electrical signals, but the same tr of infrared video signals is
While the + signal is, for example, /100 μsec, visible light is 1111! For example, the image synchronization signal is 64 μsec, and one cycle of both, ? 14 different frequencies.

Therefore, in conventional monitoring equipment, the infrared video signal and the visible light video signal are transmitted through separate transmission paths as described above. -, or split the monitor screen q
17 It was not possible to display information such as inserting an infrared image into a part of the visible light image.

Therefore, the present invention has been made in consideration of the above circumstances, and the object of the present invention is to transmit an infrared video signal from an infrared television camera and a visible light video signal from a visible light television camera through the same transmission path. The objective is to provide a monitoring device that can

[Structure of the invention]

(Means for Solving the Problems) The present invention provides infrared I! i! In a surveillance device having an infrared television camera for visualizing an image and a visible light television camera for visualizing a visible light image, an infrared video signal from the above-mentioned infrared television camera is transmitted. The present invention is characterized in that a tuning means is installed to tune the visible light image signal from the mountain and transmit the mountain and gorge image signal through the same transmission path.

(Function) Infrared images obtained by an infrared television camera (1)
The signal is tuned by the tuning means to the 7IA optical video 81 signal from the visible light television camera, and is transmitted along with the visible light video signal through the transmission line of one channel.

Therefore, according to the present invention, since it is possible to transmit an infrared video signal and a visible light video signal over a jrl- transmission line, it is possible to save the transmission line and reduce costs. It is possible to downsize the monitoring device.

(Example) Examples of the present invention will be described below based on FIGS. 1 to 3.

FIG. 2 shows the overall configuration of an embodiment of the present invention. This is a perspective view, and in the figure, a track 41 is laid on the ceiling of a monitoring area (not shown) of an industrial plant, an office, etc., and the running rail 2 and the transmission cable 3 are connected to each other over almost the entire length of the road 1. U lll2XQ L/.

On the running rail 2, for example, four self-propelled moving devices 4 are engaged with a pair of running wheels 5, 5, . is designed to run on its own along a traveling rail 2.

The moving device 4 has a control panel 8 with a built-in control means coaxially mounted on the lower surface of the traveling trolley 7, which has a built-in driver 6 (see FIG. 1) that controls the driving of the traveling wheels 5, 5, . . . Stick to this control! 8, a pan head 9 is provided at approximately the center of the bottom surface so that it can be rotated and raised, and an infrared television camera 10 and a visible light television camera 11, which are arranged in parallel to the pan head 9, can be rotated and raised. Let these two TV cameras 10
．． It is designed to control the viewing angle and field of view of 11.

The transmission cable 3 is connected to the traveling wheels 5°5 of the moving device 4.
・Always in electrical contact with these running wheels 5°5...
are electrically connected to the driver 6 of the traveling trolley 7 and the υ control panel 8 via the signal transmission length r112.
It is electrically connected to the operation panel 13 via.

The operation 113 is for remote control of the movement of the moving device 4, etc.
It includes a JJ operating tool 14, a pan head operating tool 15) for remotely controlling the rotation J3, elevation angle, etc. of the pan head 9.

In addition, the operation panel 13t is equipped with a plurality of color monitors 16 such as color CRT display devices that display infrared images and visible light threads captured by an infrared television camera 10 and a visible light television camera 11. There is.

That is, the operation panel 13 controls the movement of the moving device 4 via the driver 6 by operating the moving operation tool 14 thereof, and controls the rotation and elevation angle of the platform 9 by operating the platform operator 15. The visual angle and focus of the visible light video television camera 10.11 are controlled respectively.
Magnification (telephoto) etc. can be controlled remotely as appropriate.

The control a38 of the mobile device 4 has a tuning means 17 shown in the block diagram of FIG. For example, N
TSC (National Te1ev+-5io
Visible light that is compatible with the standard video signal of the n system C01m1ttQe) system! l! Image signal S11
J to synchronize with the sea urchin.

That is, the infrared video signal 810 is converted into a video signal 10a obtained by converting the infrared video information into an electric code 13, and the video signal 10a
The image signal f'5s10a is given to the A/D converter 18 and converted from an analog signal to a digital signal [:, while the synchronizing signal 10b is sampled vII. Give to container 19.

Similarly, the visible light video signal S11 is also the video signal 511.
Same as a (separated from revised signal 811b, both ministries 511a, 5
11b to the mixer/mask generator 22.

From this mixer mask generator 22, a visible light signal 11b with one period of 64 μsec is transmitted to 11
sampling control 0:m19, and in this sampling system i1!319, one cycle is 400 μSQC in the evening.
The infrared synchronization signal 510b is converted into a visible light video signal S11.
For example, in synchronization with one period of 64 μsec of the synchronous signal @311b, the infrared video Q signal fmsIQa is scanned by 1v, and the external video signal 510a is converted into a visible light video signal 5ll.
tune to a.

Buffer this tuned sampling signal? The i signal accumulated in 20 is again converted into a digital signal (from No. 3) to an analog signal by the D/A converter 21, and is provided to the mixer/mask generator 22.

Therefore, the mixer/mask generator 22 receives the visible light video signal 511a and the infrared ray signal 1 synchronized with the visible light video signal 511a.
! I! ! Here, a required part of the visible light video signal 511a is masked, and an infrared video signal "p S 1" is applied to the masked part.
For example, as shown in FIG. 3, one screen on the color monitor 16 is
A mixed image signal S22 is generated which is divided into two screens and displays an infrared image on A and a visible light image on B, respectively.

The MIKI 4 no mask generator 22 can adjust the enlargement/reduction of the masking part as appropriate, and by expanding the masking area to the maximum, the color [niter 16
The visible light image @B is erased from the screen and only the infrared image △ is displayed, while the masking area is reduced to the maximum limit. can be displayed.

Mixed image 1 from Mi'V sir mask generator 22
No. 3 S22 is a transmission cable connected to J: Signal transmission device 1
2 can be displayed on the color monitor 16 of the operation panel 13.

Note that the mixer/mask generator 22 has a microphone [
1 bus O setuna 23 and subtype 1 signal interface [-su 24,
It is electrically connected to the driver 6 of the moving device n4 via the travel/drive interface J-space 25 and the position detection interface 6, and is used to control the operation of the moving device 4.
, II control signals are given to the driver 6 from the operation panel 13, and various detection signals for detecting the position, moving speed, etc. of the mobile vJ device 4 are fed back to the operation panel 13.

Therefore, according to this embodiment, the control signal for controlling the operation of the mobile Vi device 4 and the feedback signal from the mobile fJl device 4 are transmitted together with the mixed video signal S22 through the 1-channel V channel transmission cable 3. The signal transmission path can be saved, and the track 1 can be made smaller and lighter, and costs can be reduced accordingly.

Next, the operation of the actual example I#i will be explained.

First, when the iR officer operates the moving operation flfll 4 on the operation panel 13, the operation No. 13 is transmitted to the signal transmission device 12 through the pull 3! -j is converted into a signal suitable for transmission, and sent to the driver 6 via the running wheels 5゜5... of the moving device 4, which controls kneading υ to move the moving device 4 to the required position. Move it into the surveillance area.

Next, when the pan head operation tool 15 of the operation panel 13 is operated as appropriate,
The operation signal is transmitted to the transmission cable 3, the signal transmission device 12,
It is given to the control panel 8 via the running wheels 5, 5, .
The viewing angles and fields of view of the infrared television camera 10 and the visible light television camera 11 do not match the monitoring target.

An infrared image of the temperature distribution, etc. of the monitored object is carried by an infrared television camera 1o, and an infrared video signal S10 is output from this camera 10, and a visible light image of the monitored object is conveyed by a visible light television camera 11. The camera 11 outputs a visible light video signal S11, which is a standard video signal of the NTSC system, for example.

The infrared image signal S10 and the visible light image signal 2) S11 are both applied to the control panel 8 of the moving device 4, and the tuning stage 17
Is infrared video signal S10 possible? 41 ray video signal S
After that, both signals SI0 and SI811 are subjected to mixing and masking processing by the mixer/mask generator 22, and sent as an n-component signal 822 via the signal transmission device 12 via the transmission cable 3 to the color monitor of the operation panel 13. given to 16.

Therefore, for example, as shown in FIG. 3, in the Cassie 7 monitor 16, an infrared image A and a visible light image are displayed on one monitor screen. fj18 can be displayed together.

Also, by minimizing the masking area of the mixer/mask generator 22, only the infrared image △ is displayed in color on the color monitor 16, while by reducing the 7 sagging area to the utmost limit, the Fil? J
Only the l-ray image 1i[3 can be displayed in color on the color monitor 161.

Therefore, according to Kimi/JIiPA, since the infrared image signal 310 can be tuned to the visible light image 1g 811 by the tuning means 17, both signals S10 and S11
can be transmitted by the 11+ channel signal transmission cable 3, saving the transmission path.
It is possible to reduce the size and cost of the track 1.

In addition, as shown in FIG. 3, the infrared image △ can be displayed simultaneously on both sides of the color seven-niter 16 by inlaying it onto the visible light image B, so that the mountain blowing images A and B can be observed in comparison. can do.

Furthermore, the infrared video signal S10 is converted into a visible light video signal S1.
1, so these two beliefs ")S10.S1
On the side of the color monitor 16 that receives 1, it is sufficient that the 31 interface is for visible light projection ml; can be achieved.

〔Effect of the invention〕

As explained above, the present invention provides an infrared television camera that captures infrared images and visible light! ! In a monitoring device jj equipped with a visible light television camera that produces 1ffi images of two images, the infrared video signal from the infrared television camera is synchronized with the visible light video signal from the visible light television camera, and the Yamabuki statue IS Since the tuning means for transmitting the signals through the same transmission path is a set number, the infrared video signal and the visible light video signal can be transmitted through a single channel transmission path, which saves on the transmission path and reduces costs. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the main parts of the C vision device according to the present invention, and FIG.
The figure is a perspective view of the overall structure of one embodiment of the present invention having the tuning means shown in FIG. 1, with some parts omitted, and FIG.
FIG. 4 (Δ), <8), which is a schematic diagram showing an example of the display of the color monitor shown in the figure, is a waveform chart showing a comparison between an infrared video signal and a visible light video signal in a conventional monitoring device. 3... Transmission cable, 4... Transfer vj device N, 10.
... for infrared light)" review camera, S10... infrared video signal, 11... IIT visual beam door review camera, 811
...Visible light image (A 4-113...Operation f'l board, 19...Limbbling control 7a device, 2...Me 1
-1-)-Mask generator.

Claims (1)

[Claims] In a monitoring device having an infrared television camera that takes an infrared image and a visible light television camera that takes a visible light image, the infrared video signal from the infrared television camera is converted into a visible light image from the visible light television camera. A monitoring device characterized by being provided with a tuning means for tuning the signal and transmitting both video signals through the same transmission path.