JP3059531B2 - Monitoring display method of disaster prevention monitoring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention monitoring system provided with a terminal device such as a gas leak detector, a fire detector, a receiver and the like, and more particularly, to a monitor display device for graphically displaying the status of a monitored area. In addition, the present invention relates to a monitoring display method of a disaster prevention monitoring system that performs disaster prevention monitoring by reproducing an image obtained by imaging by a monitoring camera.

[0002]

2. Description of the Related Art Conventionally, in such a disaster prevention monitoring system, terminal equipment such as a gas leak detector, a fire detector, and a receiver are installed in a predetermined monitoring area and provided in a central monitoring room. A centralized monitoring device receives detection signals from these terminal devices by a transmission method such as a so-called polling method, and graphically displays the presence or absence of an abnormality on a monitoring display device such as a CRT display for each monitoring area. This allowed for centralized visual monitoring.

Further, a video surveillance camera which can be operated by a remote control of a surveillance person in a central surveillance room is installed in an appropriate surveillance area, and an image of the surveillance area is directly displayed on a CRT.
By reproducing it on a display or the like, reliable monitoring can be performed. FIGS. 7 and 8 show a display method of the display device provided in such a conventional disaster prevention monitoring system, with a sketch of a monitoring area designated by a monitoring person in a central monitoring room or the like as a background. A graphic is displayed on the display screen 1 of the display (not shown in FIG. 7), and further, identification codes S01 and S0 attached to terminal devices such as various sensors installed in the monitored area.
2, SO3, SO4 to S31, S32, S33, S34, etc. are displayed in an overlapping manner corresponding to the installation location. Therefore, the structure is displayed so that the user can intuitively recognize the structure of the monitoring area and the type and installation location of the terminal device only by looking at the screen 1.

[0004] If none of the terminal devices detects an abnormality, as shown in Fig. 7, the background sketch and the state in which the terminal devices are simply displayed continue. on the other hand,
Any of the terminal devices, for example, the identification codes S01 and S0 in FIG.
When the terminal device indicated by 5, S15, S25 detects an abnormality and issues an alert, enclose the identification code in a frame,
Further, by coloring the inside of the frame with red or the like indicating the occurrence of an abnormality, the display content can be changed, and the location of the occurrence of the abnormality and the type of the abnormality can be intuitively confirmed.

Further, when a predetermined display control is performed automatically or manually, as shown in FIG. 8, a display screen 1 is displayed based on a video signal sent from a video surveillance camera installed in a surveillance area. The video of the monitored area is reproduced on a part (referred to as a window display unit) 2 of the camera to provide more clear information.

[0006]

However, in such a conventional monitoring display method of a disaster prevention monitoring system,
When the window display is specified, as shown in FIG. 8, a part of the monitored area sketch or the terminal device identification code that is graphically displayed is hidden by the window display unit of the reproduced video, and this window display is performed. For example, when the terminal devices indicated by the identification codes S32, S33, S35, S36, etc. in FIG. 8 detect an abnormality, there is a problem that the abnormality notification is not displayed.

[0007] The present invention has been made in view of such problems of the related art, and displays useful surveillance information of a terminal device or the like disposed in a surveillance area and an image from a video surveillance camera. It is an object of the present invention to provide a monitoring display method of a disaster prevention monitoring system in which a window display for reproducing the information is efficiently displayed in a screen of a display device so that a lack of useful information is not caused.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a display unit provided in a disaster prevention monitoring system, which displays a monitoring area and a terminal device installed in the monitoring area. A graphic display of the position and the monitoring status, and a method for monitoring and displaying a disaster prevention monitoring system having a function of simultaneously reproducing and displaying an image taken by a video surveillance camera during the graphic display. When performing playback, first, on the display screen where the image was played,
The graphic display having a lower resolution is performed.

[0009]

According to the monitoring display method of the disaster prevention monitoring system of the present invention, the high resolution window display based on the video signal from the video surveillance camera is performed, and then the low resolution graphic display is performed. As a result, the graphic display becomes clear and the reproduced image in the window display is slightly hidden by the graphic display. However, since the reproduced image can be checked at the same time, the monitoring information is always efficiently displayed. be able to.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. First, the configuration of the disaster prevention monitoring system will be described with reference to FIG. In FIG. 1, reference numeral 1 denotes a receiver, which receives an alarm signal transmitted from a fire detector, a gas leak detector, a security device, or the like connected to a plurality of lines extending to a plurality of monitoring systems.

Reference numeral 4 denotes a display control unit of the disaster prevention monitoring device. The receiver 3 and other detectors and receivers 5 provided in other monitoring systems are connected to an input unit (input interface) 6. . More specifically, the polling transmission system is applied to the disaster prevention monitoring system mainly composed of the receiver 3 by a so-called R-type system configuration, and the detector or the receiver 5 is directly connected to the input unit 6. The so-called P-type system configuration is applied to the system connected to.

When each of the terminal devices of these systems detects an abnormality and sends out an alarm signal, the display control unit 4 receives the signal via the input unit 6. The configuration of the display control unit 4 will be described. Reference numeral 7 denotes a central control unit which performs signal processing on an alarm signal from the input unit 6 and performs control for display display. Processing is performed.

Reference numeral 8 denotes a command input unit for inputting various commands for display to the central control unit 7, for example,
It consists of input devices such as a keyboard and a mouse. Further, the central control section 7 controls the operation of a display section composed of the image data forming circuit 9, the image memory 10, the video signal generating circuit 11, and the CRT display 12, so that a sketch of a monitoring area to be described later and a terminal device are controlled. Is displayed on the CRT display 12 as well as the image reproduction of the video by the video surveillance camera.

Reference numeral 13 denotes an A / D converter for converting a point-sequential video signal output from the video surveillance camera 14 into digital pixel data in synchronization with a predetermined point-sequential scanning timing. A frame memory 15 having a storage capacity capable of storing pixel data corresponding to one frame image for each color of G (green) and blue (B) is stored. still,
When capturing a still image, the image capturing operation is completed only by storing pixel data equivalent to one frame image once in the frame memory 15, and when capturing a moving image, the image data is sequentially synchronized with each frame scanning period. The operation of rewriting data is performed.

Reference numeral 16 denotes a reference information file composed of a read-only memory (ROM). The reference information file 16 is image data representing a sketch of each monitored area (eg, a sketch of each floor of a high-rise building, etc.), and the type and installation of each terminal device in the sketch. Data indicating the position and the like are stored in advance. Reference numeral 17 denotes a history information file composed of a random access memory (RAM), which sequentially stores data such as the contents of alarm data and alarm locations transferred from the receivers 3 and 5.

The frame memory 15, reference information file 16 and history information file 17 are mutually connected to the central control unit 7 and the image data forming circuit 9 via a data bus, and control signals from the central control unit 7 are transmitted. , The transfer operation of each storage data is performed. The image memory 10 has a storage capacity equivalent to one frame image.
The image data forming circuit 9 forms each pixel data of one frame image from the sketch of the monitoring area read from the reference information file 16 and the display data related to the terminal device. The pixel data is stored. Then, the video signal generation circuit 11 reads out the pixel data of the image memory 10 in synchronization with the scanning cycle of the standard television system such as the NTSC system, and converts the pixel data into the scanning period of the standard television system. The CRT display 12 performs a graphic display by generating the corresponding horizontal synchronizing signal SYN and each of the color signals R, G, and B and supplying them to the CRT display 12 in time series.

In addition, not only the data read from the reference information file 16 but also the data read from the history information file 17 and the frame memory 15 are displayed on the CRT display 12 by performing the same processing. However, the image memory 10 and the video signal generation circuit 1
Since data is read out by DMA (direct memory access) transfer between the two, apparently, the image data forming circuit 9 automatically writes data to an appropriate storage area of the image memory 10 and automatically generates a video signal generating circuit. 11 performs processing for image reproduction.

Next, the operation of the display control unit 4 having such a configuration will be described. The processing described below is performed under the control of the central control unit 7. First, when the operation is started by turning on the power or the like, a predetermined initialization operation is performed in step 100, and a sketch of the monitored area, an identification display of the terminal device, and a display of the installation position are performed.

That is, the central control unit 7 reads out from the reference information file 16 the data of the sketch corresponding to the monitoring area set by the command input unit 8 and the data on the position and type of the terminal equipment arranged in the monitoring area. Then, the image data is formed and transferred to the image data forming circuit 9. The image data forming circuit 16 forms pixel data of one frame image by adding an identification code indicating the position of the terminal device to a sketch as a background. 10 and the video signal generation circuit 11
By automatically reading out these pixel data by MA transfer and supplying them to the CRT display 12, a graphic display of the monitored area is performed.

Next, at step 110, the central control unit 7 processes the input signal from the input unit 6. That is, the process of step 110 is performed in the subroutine format shown in FIG. 3. First, in step 200, it is determined whether or not the input unit 6 has received an input signal indicating abnormality detection from the receivers 3, 5, and If there is no signal, go directly to step 1
The processing shifts to 20.

On the other hand, if there is an input signal, the process shifts to step 210 to determine which terminal device the signal has been transferred from, and creates abnormality detection data relating to the installation position and type of the terminal device. In step 220, the abnormality detection data is stored in the history information file 17. In step 120, the subroutine process shown in FIG. 4 is performed. First, in step 300, it is determined whether or not the abnormality detection data exists in the history information file 17. Directly proceeds to step 130, and if abnormality detection data exists, performs step 310.

That is, in step 310, the data of the installation coordinates of the terminal device indicated by the abnormality detection data is obtained by referring to the reference information file 16, and the terminal device displayed on the display screen of the CRT display 12 is obtained. The coordinates of the four corners of the window display unit are determined using the position furthest from the display portion of the identification code as the window display unit. Then, the video surveillance camera 14 is caused to take an image of the surveillance area and stored in the frame memory 15. still,
When the observer specifies still image display from the command input unit 8, one frame image of a still image is captured, and when instructed to capture a moving image, the imaging operation is repeated in synchronization with a predetermined scanning cycle.

In step 130, the subroutine processing shown in FIG. 5 is performed. First, in step 400, the image data in the frame memory 15 is read out to the image data forming circuit 9, and the image data corresponding to the coordinate area designated on the window display section is corresponded. This image data is stored in the storage area of the image memory 10. As a result, the video signal generation circuit 11 converts the video of the monitoring area newly stored in the image memory 10 into a CR.
It will be displayed on the T display 12.

Next, in step 410, by referring to the reference information file 16 based on the abnormality detection data stored in the history information file 17, the position of the terminal device which has detected the abnormality is specified. A sketch of the monitored area and data related to the terminal device in the sketch are read out from the information file 16 and transferred to the image data forming circuit 9, and the sketch, the identification code of the terminal device, and the terminal device in which an abnormality is detected are framed. In addition, pixel data corresponding to one frame image is formed in a state where a colored display for notifying a danger such as red is given in the frame. Then, the pixel data is stored in the image memory 10.

As a result, the image memory 10 stores the image data in a state where the graphic data formed in step 410 is added to the image data of the video from the video surveillance camera 14 which is displayed on the window. The Rukoto. Here, since the graphic data formed in step 410 is lower than the resolution of the reproduced image obtained by imaging by the video surveillance camera 14, all the pixel data of the image data of the window display portion stored in step 400 Only the portion where the low-resolution graphic data exists is replaced without being replaced by the graphic data.

Therefore, as shown in FIG. 6, the window display section WD in the display screen of the CRT display 12 has a state in which the display of graphic data obtained by imaging by the surveillance camera 14 appears on a reproduced image. This is displayed so that the reproduced image of the monitored area, the sketch as the background, the identification code indicating the terminal device, and the like can be simultaneously checked. It goes without saying that a sketch or the like of the monitoring area is displayed as a background outside the range of the window display section WD.

When moving image capturing by the video surveillance camera 14 is designated from the command input unit 8, pixel data corresponding to one frame image is sequentially transmitted from the video surveillance camera 14 to the frame memory 15 in synchronization with the scanning cycle of the standard television system. Transferred and stored. As a result, the image data forming circuit 9 forms image data for window display based on the pixel data of the moving image in the frame memory 15 by performing the processing shown in the flowcharts of FIGS. Since the images are sequentially stored in the memory 10, the moving image captured by the video surveillance camera 14 is displayed on the CRT display 12 as a window.

When the moving image is displayed on a window, the graphic display has a lower resolution than the high-resolution moving image. Therefore, the graphic data is displayed on the window as if it were raised. , The reproduced image of the monitored area, the sketch as the background, the identification code indicating the terminal device, and the like can be simultaneously checked.

[0029]

As described above, according to the present invention, the display unit provided in the disaster prevention monitoring system displays the display of the monitoring area and the position and monitoring status of the terminal equipment installed in the monitoring area. In the monitoring display method of the disaster prevention monitoring system having a function of displaying and simultaneously reproducing and displaying an image captured by a video surveillance camera during the graphic display, when performing the graphic display and the image reproduction, first, Since the graphic display is performed after the image is reproduced, the low-resolution graphic display is superimposed on the high-resolution window display based on the video signal from the video surveillance camera. As a result, the graphic display becomes clear and
Although the reproduced image in the window display is slightly hidden by the graphic display, the reproduced image can be checked at the same time, so that the monitoring information can always be efficiently displayed.

[Brief description of the drawings]

FIG. 1 is a system block diagram illustrating a configuration of a disaster prevention monitoring system according to an embodiment.

FIG. 2 is a flowchart illustrating an operation of a display control unit.

FIG. 3 is a flowchart illustrating an input signal processing operation of FIG. 2;

FIG. 4 is a flowchart showing an ITV signal processing operation of FIG. 2;

FIG. 5 is a flowchart showing a display processing operation of FIG. 2;

FIG. 6 is an explanatory diagram illustrating a display operation example according to the embodiment.

FIG. 7 is an explanatory diagram showing a conventional display operation example.

FIG. 8 is an explanatory diagram showing an example of a conventional window display operation.

[Explanation of symbols]

 4; display control section 6; input section 7; central control section 8; command input section 9; image data forming circuit 10; image memory 11; video signal generating circuit 12; CRT display 13; A / D converter 14; Camera 15; Frame memory 16; Reference information file 17; History information file

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G08B 23/00 510 H04N 7/18 G09G 5/00

Claims (1)

(57) [Claims] 1. A display unit provided in a disaster prevention monitoring system,
While displaying the monitoring area and graphically displaying the position and monitoring status of the terminal equipment installed in the monitoring area,
In a monitoring display method of a disaster prevention monitoring system that simultaneously reproduces and displays an image captured by a video surveillance camera, when performing the graphic display and the image reproduction at the same time,
First, a video image captured by the video surveillance camera is reproduced,
A monitoring display method for a disaster prevention monitoring system, wherein the graphic display having a lower resolution than the video is performed on the reproduced video .