JPS6130193A - Unusual detection system - Google Patents

Abstract

PURPOSE:To make it unnecessary for a guardman to patrol and to make it possible to realize a usual monitor situation by informing of unusual occurrence comparing a monitor image by infrared rays in normal condition in a monitor area with the monitor thereafter. CONSTITUTION:A infrared camera 1 is installed in a proper place in a room 2 as a monitor area, photographing inside of the room in all directions, and the output thereof is supplied selectively to amemory unit 4 or 5 through a switch 3. In this cse, a monitor area image in normal condition in the room 2 is taken in the memory unit 4 as one screen portion, and then, the switch 3 is changed over to take one screen portioi of image in the memory unit 5. Thus, each image within the units 4 and 5 is compared at a comparison circuit 6 to break out alarm from an alarm section 7 when both images are dissident to each other.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an abnormality detection method for buildings, etc.

In crime prevention, disaster prevention management, and night security for buildings, etc.
Regardless of the size of the management area, it is important for management to pay close attention to and monitor the matters to be managed, regardless of the size of the area.

This lack of thoroughness in management can lead to major incidents, which is why sufficient consideration is required to prevent management errors from occurring.

[Conventional technology]

In conventional night security for buildings, etc., security guards regularly patrol the building, etc., and use human senses such as eyes and ears to check whether or not there is an abnormality in the security area. We are taking measures such as checking the number of people in attendance.

In addition, fire detectors are installed on ceilings, etc. to detect the occurrence of fires in buildings, etc.

[Problem that the invention seeks to solve]

If a security guard patrols buildings regularly for crime prevention and disaster prevention, there is virtually no security between one patrol and the next. If the cause of a crime or fire is lurking in an area that cannot be reached, there is a high risk that it will be overlooked, especially at night.

In addition, in the case of crowd management, if the traffic does not go through the regular route, it will not be included in the crowd management tally.

Also, if the fire detector is installed near the ceiling,
There is a problem in that the fire detector only generates an alarm when the scale of the fire becomes large.

[Means for solving problems]

The present invention provides an abnormality detection method capable of solving the above-mentioned problems.The present invention provides an abnormality detection method capable of solving the above-mentioned problems. connected and an image of the monitoring area in a state where there is no abnormality in the monitoring area is stored in the first storage device, and the output of the infrared imaging device is connected to the second storage device by switching the switching means. A monitoring area image of the monitoring area is captured into the second storage device, and the captured monitoring area image and the monitoring area image stored in the first storage device are compared by a comparing means to notify whether or not an abnormality has occurred. It is configured to do so.

[Effect]

According to the method of the present invention, an infrared monitoring area image when there is no abnormality in the monitoring area is compared with a subsequent infrared monitoring area image to notify whether or not an abnormality has occurred in the monitoring area. This makes it possible to maintain constant surveillance while eliminating the need for security guards to patrol the area. Furthermore, since it is possible to sense temperature changes, it is also possible to notify the initial stage of a fire.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the invention. In this figure, 1
is an infrared camera, and this camera is installed at a suitable location (-corner) in a monitoring area, for example, a room 2 in a building as shown in FIG. 2, and radially images the interior of the room as widely as possible. Reference numeral 3 denotes a switching means, for example a changeover switch, which is used to selectively connect the output of the camera 2 to the first storage device 4 or the second storage device 5. These first and second storage devices 4 and 5 are connected to a comparison section 6. The output of the comparison section 6 is connected to the alarm section 7.

The second storage device 5 is connected to an auxiliary memo ν'8 for storing its contents and a monitor TV 9 for visually displaying its contents.

In addition, if there is an obstacle in the room 2 and the camera 1 cannot capture the entire shadow area, an appropriate number of first
Diagram components 1, 3. ．． 4, 5.6 will be added to ensure that there are no unimaged areas.

The crime prevention and disaster prevention aspects of the monitoring area in the system configured as described above will be explained.

First, in order to capture an image of the monitoring area in a state where there is no abnormality in the room 2, which is the monitoring area, that is, in an unoccupied state or a state where there is no fire, the output of the infrared camera 1 is switched and the switch 3 is switched to the ■ side. One screen is imported into the storage device 4.

Thereafter, one screen at an arbitrary time is captured into the second storage device 5 by switching the switch 3 to the ■ side.

The comparison unit 6 compares the monitoring area image of the second storage device 5 and the uniformity of the monitoring area of the first storage device 4, and if a match is not obtained between the two, an alarm is generated from the alarm unit 7. do. In this case, due to the difference between the time taken to capture the image in the first storage device 4 and the time taken to take the image in the second storage device, even if there is no change in state (even though there is a difference in level), the image pattern A comparison is made. According to this method, for example, if a person intrudes, the image patterns change due to the heat generated by the person's body, so they no longer match, and an alarm is generated. The same applies to fires.

With this alarm, it is possible to recognize that a person is intruding into the monitored area or that a fire has occurred. Such recognition does not require patrolling the monitoring area or constantly monitoring the monitor. Furthermore, since the occurrence of a fire is detected by detecting temperature changes using infrared rays, even the occurrence of a small flame can be notified, which is effective in detecting an initial fire.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be obtained: (1) Eliminating the need for patrols by security guards and making it possible to maintain a constant monitoring system; and (2) Effective in detecting early fires. It will be done.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing how an infrared camera is attached to a monitoring area. In the figure, 1 is an infrared camera, 2 is a monitoring area, 3 is a switching means, 4 is a first storage device, 5 is a second storage device, 6 is a comparison section, and 7 is an alarm section. Figure 1 Figure 2

Claims (1)

[Claims] The output of an infrared imaging device installed in a monitoring area and capturing an image of the monitoring area is connected to a first storage device via a switching means, and an image of the monitoring area in a state where there is no abnormality in the monitoring area is stored in the first storage device. By switching the switching means, the output of the infrared imaging device is connected to a second storage device, and the surveillance area image of the surveillance area is captured into the second storage device, and the captured surveillance area image is stored in the second storage device. An abnormality detection method characterized in that the image is compared with a monitoring area image stored in the first storage device to notify whether or not an abnormality has occurred.