JP7743372B2 - Security system and security system program - Google Patents

Description

The present invention relates to a security system and a program for the security system.

As shown in Patent Document 1, conventional security systems are configured to display on the same screen a real image, which is an actual video of the detection area of a detection sensor, and a composite image, in which the movement of a person detected by the detection sensor is superimposed on an image of the detection area viewed from a different angle, such as from above.

This configuration allows you to check the person detected by the detection sensor in a real image, while also checking how that person is moving within the detection area in a composite image, allowing you to take swift action if, for example, an intruder is detected.

However, previous security systems have not been adequately considered for application to large security areas where detection sensors are installed in multiple locations.

As a result, if an object detected by one detection sensor moves and is then detected by another detection sensor, for example, if the composite image uses a map or the like and is displayed in a format where north is facing up, the direction in which the object moves may not be consistent between the composite image and the real image, making it difficult to intuitively grasp the movement of an intruder, etc.

Japanese Patent Application Laid-Open No. 2019-185115

The present invention was therefore developed to solve all of the above-mentioned problems at once, and aims to make it easier to intuitively grasp the movements of intruders and other individuals detected by a detection sensor, even when the surveillance area is large.

The security system of the present invention is a security system equipped with detection sensors at multiple locations in a security area, and is characterized by having a display unit that, when an object is detected by one detection sensor and when that object moves and is detected by another detection sensor, displays a real image of the object along with the detection area of the detection sensor, and a composite image in which the movement of the object is superimposed on an image of the detection area viewed from a different angle from the real image, on the same screen so that the direction of movement of the object in each image is aligned.

With a security system configured in this way, when an object is detected by one detection sensor and then that object moves and is detected by another detection sensor, the direction of the object's movement is displayed in the real image and the synthetic image so that it is aligned. This makes it easier to intuitively grasp the movements of intruders and others detected by the detection sensors, even in large surveillance areas.

It is preferable that the display unit is configured to switch between the real image and the synthetic image when an object detected by one of the detection sensors moves and is detected by another of the detection sensors.
With this configuration, even if an intruder or the like moves over a wide area, the real image and the synthetic image are switched every time the intruder or the like is detected by each detection sensor, so the movement of the intruder or the like can be reliably tracked.
Furthermore, with this configuration for switching between real images and composite images, each image can be displayed larger and has better visibility than a configuration in which multiple real images and multiple composite images are displayed simultaneously.

It is preferable that the display unit displays the real image and the synthetic image so that the horizontal movements of the object in each image are synchronized.
With this configuration, the advantageous effect of the present invention, such as making it easier to intuitively grasp the movement of an object, can be more significantly exhibited.

In a specific embodiment, the composite image is a rotated or inverted map including the detection area, with the movement of the object superimposed on the rotated or inverted map.
In another embodiment, the real image is obtained by rotating or inverting raw data of an image of the detection area.
With this configuration, the directions of movement of objects in the real image and the synthetic image can be aligned by simple image processing.

It is preferable that the device further comprises a notification unit that notifies an external communication terminal of the detection of an object when the detection sensor detects the object.
With this configuration, it is possible to quickly notify the user that an intruder or the like has been detected.

It is preferable that the notification unit transmits at least one of the real image and the synthetic image to the communication terminal.
With this configuration, it is possible to grasp the movements of intruders and the like from a location away from the site (remotely), and it is also possible to know in which detection area the intruder and the like were detected.

In addition, the program for a security system according to the present invention is a program used in a security system in which detection sensors are installed at multiple locations in a security area, and is characterized in that, in each case where an object is detected by one detection sensor and the object moves and is detected by another detection sensor, the program causes the computer to function as a display unit that displays, on the same screen, a real image of the object captured along with the detection area of the detection sensor, and a composite image in which the movement of the object is superimposed on an image of the detection area viewed from a different angle from the real image, so that the direction of movement of the object in each image is aligned.
According to the security system program configured in this manner, it is possible to achieve the same effects as the security system described above.

The present invention makes it easier to intuitively grasp the movements of intruders and other individuals detected by a detection sensor, even when the surveillance area is large.

1 is a schematic diagram showing the configuration of a security system according to an embodiment of the present invention; FIG. 2 is a functional block diagram showing functions of the information processing apparatus according to the embodiment. 3A and 3B are schematic diagrams showing a real image and a composite image displayed on the display unit of the embodiment. 3A and 3B are schematic diagrams showing a real image and a composite image displayed on the display unit of the embodiment. FIG. 2 is a reference diagram for explaining features of the display unit of the embodiment. FIG. 2 is a reference diagram for explaining features of the display unit of the embodiment. 3A and 3B are schematic diagrams showing a real image and a composite image displayed on the display unit of the embodiment. 3A and 3B are schematic diagrams showing a real image and a composite image displayed on the display unit of the embodiment. FIG. 10 is a functional block diagram showing functions of an information processing apparatus according to another embodiment.

A security system according to one embodiment of the present invention will be described with reference to the drawings.

[System configuration]
The security system of this embodiment is used to guard various facilities, such as business facilities such as offices, commercial facilities, airports, and train stations, and is designed to detect intruders into security areas within or around the facility.

Specifically, as shown in Figure 1, this security system 100 includes multiple detection sensors 10 and an information processing device 20 that acquires signals output from these detection sensors 10.

Detection sensors 10 are installed at multiple locations in the security area within or around the facility, and detect objects such as intruders that enter a pre-set detection area and emit a signal indicating this.

Specific examples of the detection sensor 10 include various types of human body detection sensors, such as passive infrared sensors, active infrared sensors, radar sensors using microwaves or millimeter waves, or camera sensors using image sensors.

As shown in Figure 1, the information processing device 20 acquires the signal output from the detection sensor 10, for example via a network, and displays various security-related information, including the acquired information, on the display D.

This information processing device 20 is a general-purpose or dedicated computer equipped with a CPU, memory, display D, etc., and performs the functions of at least a state switching unit 21 and a display unit 22, as shown in Figure 2, by the CPU and its peripheral devices working together in accordance with the security system program stored in the memory.

The state switching unit 21 switches the state of the detection area of the detection sensor 10. Specifically, it switches the detection area of each detection sensor 10 between an armed state, in which an alarm signal is output when an object is detected, and a disarmed state, in which the armed state is released. In this embodiment, the state of each detection area can be switched between the armed state and the disarmed state using a selection means S, such as a mouse or touch panel.

In the armed state, when the detection sensor 10 detects an object, a signal indicating this is output from the detection sensor 10 and a warning or other message indicating that the detection sensor 10 has detected an object is displayed on the display D.

On the other hand, the disarmed state is a state in which the above-mentioned warnings and the like are not displayed on display D. Specifically, the detection function of detection sensor 10 may be stopped so that the detection sensor 10 does not detect an object. However, in this embodiment, the detection function of detection sensor 10 is maintained, but even if the detection sensor 10 detects an object, signal processing is used to prevent warnings and the like from being displayed on display D.

Here, the display unit 22 displays various security-related information on a display D provided on the information processing device 20. However, the display unit 22 may also display various information on a display provided on a computer other than the information processing device 20, or on a display provided on a mobile terminal such as a mobile phone or tablet.

As shown in Figure 3, the display unit 22 of this embodiment displays on the display D a security area map M that provides an overhead view of a security area in which detection sensors 10 are installed at multiple locations.

The alert area map M is an overhead image that includes various features of the alert area, such as the geographical features around the facility and the layout of the facility, and can be, for example, an aerial photograph, map, floor plan, or ground surface image that includes the alert area.

Note that Figure 3 shows the case where the security system 100 is applied to a commercial facility, and the security area map M shows an overhead view of the entire security area set around the facility. However, the display unit 22 may also display a security area map M that shows an overhead view of part of the security area.

Furthermore, as shown in Figure 3, the display unit 22 displays an area display X indicating the detection area of the detection sensor 10, superimposed on the alert area map M.

Here, the detection area of each detection sensor 10 is set appropriately for each detection sensor 10, and may be set, for example, as one or more linear areas connecting one location to another distant location, or as a planar area having a certain range.

Note that examples of planar detection areas include horizontal planes aligned along the horizontal direction, vertical planes aligned along the vertical direction, and inclined surfaces inclined relative to both the horizontal and vertical directions. The planar shape of these detection areas may be set to various shapes, such as rectangular, triangular, polygonal, circular, and partially circular.

As shown in Figure 3, the area display X is a schematic representation of the actual detection area of the detection sensor 10 on the security area map M, and may faithfully represent the actual detection area, or may be slightly offset from the actual detection area.

The security system 100 of this embodiment is equipped with an imaging means (not shown) that captures an image of the detection area of the detection sensor 10, and the display unit 22 displays a real image A1 of the detection area captured by the imaging means, as shown in FIG. 3. The imaging means may be provided integrally with the detection sensor 10, or may be provided separately from the detection sensor 10, for example, in a location separate from the detection sensor 10.

The real image A1 is a moving image that shows the detection area in real time, and Figure 3 shows the detection area captured from the front. As will be explained later, the real image A1 is not limited to an image of the detection area captured from the front, but can also be an image captured from an angle determined for each detection area, such as an image of the detection area captured from above.

The display unit 22 of this embodiment displays the real image A1 on the same screen as the above-mentioned security area map M, and here the real image A1 is displayed superimposed on the security area map M. However, the real image A1 does not necessarily have to be superimposed on the security area map M, and may be displayed next to the security area map M, for example.

In addition, as shown in Figure 4, the display unit 22 displays not only the real image A1 described above, but also a composite image A2 in which the movement of an object detected in the detection area is superimposed on an image of the detection area viewed from a different angle than the real image A1.

Specifically, the composite image A2 displays in real time markers Z and the like that indicate the movement of objects in the detection area, and in Fig. 4, the composite image A2 is displayed by superimposing the markers Z that indicate the movement of objects on the above-mentioned security area map M. In other words, the composite image A2 in Fig. 4 is an image of the detection area viewed from above, with the markers Z that indicate the movement of objects superimposed on it.
In the following, for the sake of convenience, the "marker Z indicating the movement of an object" will also be simply referred to as the "movement of an object."

With the above-described configuration, real image A1 and composite image A2 are displayed simultaneously on the same screen. As a result, when an object such as an intruder is detected in the detection area, the movement of the object appears in both real image A1 and composite image A2. In Figure 4, the display unit 22 also displays a marker Z indicating the object's movement superimposed on real image A1.

Incidentally, in Figure 4, the right side of real image A1 is the right side of the surveillance area map M, which is oriented with north at the top, and the left side of real image A1 is the left side of the surveillance area map M, which is oriented with north at the top. Therefore, the movement of an object moving, for example, from right to left in real image A1 also appears to be moving from right to left in surveillance area map M, which is composite image A2, and the direction of movement of the object in both images A1 and A2 is the same.

However, there are cases where the direction of movement of an object in real image A1 and synthetic image A2 does not match, and these cases are explained below with reference to Figures 5 and 6.

First, as shown in the reference diagram in Figure 5, if real image A1 is captured from above, such as on the roof of a building, looking down on the detection area, and that detection area is located on the south side of the building on a security area map M with north at the top, then if real image A1 and composite image A2 were displayed as is, the right side of real image A1 would become the left side of security area map M, which is composite image A2, and the left side of real image A1 would become the right side of security area map M, which is composite image A2.

In addition to the surveillance area map M, Figure 5 also displays a composite image A2 in which the movement of an object is superimposed on a background image B, which is a pre-image of the detection area taken from the front. However, as mentioned above, if real image A1 and composite image A2 were displayed as is, the right side of real image A1 would become the left side of background image B, which is composite image A2, and the left side of real image A1 would become the right side of background image B, which is composite image A2.

As a result, if real image A1 and composite image A2 were displayed as is, the movement of an object moving, for example, from right to left in real image A1 would appear to be moving from left to right in the surveillance area map M or background image B, which is composite image A2, and the direction of movement of the object would be reversed in both images A1 and A2.

Next, as shown in the reference diagram in Figure 6, if real image A1 is an image of the detection area captured from the building side, and that detection area is located on the south side of the building on security area map M, which is oriented north at the top, then if real image A1 and composite image A2 were displayed as is, the right side of real image A1 would become the left side of security area map M, which is composite image A2, and the left side of real image A1 would become the right side of security area map M, which is composite image A2.

As a result, in these cases, if real image A1 and composite image A2 were displayed as is, the movement of an object moving, for example, from left to right in real image A1 would appear to be moving from right to left in surveillance area map M, which is composite image A2, and the direction of movement of the object would be reversed in both images A1 and A2.

Therefore, as shown in Figures 7 and 8, the display unit 22 of this embodiment displays the real image A1 and the synthetic image A2 on the same screen so that the directions of movement of objects in each image A1 and A2 are aligned.

To explain in more detail, one aspect of the display unit 22 is to display, as shown in Figure 7, a real image A1 that is obtained by rotating the raw data of an image of the detection area. Specifically, the display unit 22 displays, as real image A1, a 180-degree rotation of the raw data of an image of the detection area.

Another example of the display unit 22 is a composite image A2, which displays an image of an object's movement superimposed on a rotated map including the detection area, separate from the surveillance area map M, as shown in Figure 8. Specifically, the display unit 22 displays a map rotated 180 degrees from a north-upper position, i.e., a south-upper position, with the object's movement superimposed on the map, as composite image A2.

In this way, the display unit 22 displays either the real image A1 or the composite image A2 as if it were rotated, thereby displaying the real image A1 and the composite image A2 so that the horizontal movements of the objects in each image A1 and A2 are aligned.

In this configuration, when an object is detected by one detection sensor 10 and when that object moves and is detected by another detection sensor 10, the display unit 22 displays a real image A1 and a synthetic image A2 on the same screen so that the direction of the object's movement in each image A1 and A2 is aligned.

In this embodiment, when an object detected by one detection sensor 10 (hereinafter referred to as the first detection sensor 10) moves and is detected by another detection sensor 10 (hereinafter referred to as the second detection sensor 10), the display unit 22 switches between the real image A1 and the composite image A2.

In other words, when an object such as an intruder is detected by the first detection sensor 10, first, a real image A1 and a synthetic image A2 of the detection area of the first detection sensor 10 are displayed on the same screen so that the direction of movement of the object in both images A1 and A2 is aligned.

When an object such as an intruder moves from the detection area of the first detection sensor 10 to the detection area of the second detection sensor 10, the display unit 22 of this embodiment switches the real image A1 and composite image A2 on the screen to the real image A1 and composite image A2 of the detection area of the second detection sensor 10, and these real image A1 and composite image A2 are displayed on the same screen so that the direction of movement of the object in both images A1 and A2 is aligned.

[Effects of this embodiment]
According to the security system 100 configured in this manner, when an object is detected by a detection sensor 10 and when that object moves and is detected by another detection sensor 10, the real image A1 and the synthetic image A2 are displayed so that the direction of movement of the object is aligned, making it easier to intuitively grasp the movement of an intruder or the like detected by the detection sensor 10 even when the surveillance area is large.

In particular, since the horizontal movement of an intruder or other object in both the real image A1 and the synthetic image A2 is aligned, the movement of the intruder or object can be grasped more intuitively, allowing for quick response in the event of an abnormality, for example.

Furthermore, if an object detected by one detection sensor 10 moves and is detected by another detection sensor 10, the display unit 22 switches between the real image A1 and the synthetic image A2, so that the movement of an intruder or the like can be reliably tracked even if the intruder moves over a wide area.

Furthermore, since the specific implementation of the display unit 22 rotates raw data of a map including the detection area or an image of the detection area, simple image processing can align the direction of movement of objects in the real image A1 and the synthetic image A2.

In addition, the display unit 22 displays not only the real image A1 but also the composite image A2, making it easier to find where the detected person is in the real image A1, even at night, in bad weather, or when the detected person is far away.

[Other embodiments]
The present invention is not limited to the above-described embodiment.

For example, as shown in FIG. 9, the information processing device 20 according to the present invention may include a notification unit 23 that notifies an external communication terminal CT when the detection sensor 10 detects an object.

This notification unit 23 notifies that the detection sensor 10 has detected an object, for example by sending a message, and the external communication terminal CT can be a mobile terminal such as a mobile phone or tablet, or a computer of a security company, for example.
With this configuration, it is possible to quickly notify the user that an intruder or the like has been detected.

The notification unit 23 may be configured to transmit at least one of the real image A1 and the synthetic image A2 to the communication terminal CT when the detection sensor 10 detects an object.
In this case, the real image A1 or the composite image A2 may be transmitted as a rotated image as described in the above embodiment, or the real image A1 or the composite image A2 may be transmitted in an unrotated state. Note that the image transmitted by the notification unit 23 may be a still image or a moving image.
With this configuration, it is possible to grasp the movements of intruders and the like from a location away from the site (remotely), and it is also possible to know in which detection area the intruder and the like were detected.

Furthermore, the real image A1 or the composite image A2 may be buffered in memory, and when the detection sensor 10 detects an object, the notification unit 23 may transmit the real image A1 or the composite image A2 from before the detection time together with the real image A1 or the composite image A2 from after the detection time.

In addition, in the above embodiment, real image A1 or composite image A2 is displayed as rotated 180 degrees so that the direction of movement of objects in real image A1 and composite image A2 is aligned. However, the angle of rotation may be changed as appropriate, such as by displaying real image A1 or composite image A2 rotated by 90 degrees, and real image A1 or composite image A2 may also be displayed as flipped left to right or upside down.

In addition, in the above embodiment, when an object detected by the first detection sensor 10 moves and is detected by another second detection sensor 10, the display unit 22 switches between the real image A1 and the composite image A2. However, the display unit 22 may be configured to simultaneously display the real image A1 and the composite image A2 corresponding to the first detection sensor 10 and the real image A1 and the composite image A2 corresponding to the second detection sensor 10 without switching.
That is, the display unit 22 may simultaneously display a plurality of real images A1 and a plurality of composite images A2 corresponding to the plurality of detection sensors 10, respectively.

It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 100: Security system 10: Detection sensor D: Display 20: Information processing device 21: State switching unit 22: Display unit 23: Notification unit M: Alert area map X: Area display A1: Real image A2: Synthetic image B: Background image Z: Marker (movement of object)
CT: communication terminal

Claims (8)

A security system in which detection sensors are installed at multiple locations in a security area,
a display unit that, when an object is detected by a detection sensor, displays on the same screen a real image of the object captured by an imaging means together with the detection area of the detection sensor, and a composite image in which a marker indicating the real-time movement of the object is superimposed on an image of the detection area viewed from a different angle from the real image, thereby simultaneously displaying the object captured in the real image and the marker on the composite image;
A security system in which the display unit displays the real image or the image of the detection area so that the direction of movement of the object in the real image and the direction of movement of the marker on the composite image are aligned by performing a rotation or inversion process on the real image or the image of the detection area. The security system of claim 1, wherein the display unit is configured to switch between the real image and the synthetic image when an object detected by one of the detection sensors moves and is detected by another of the detection sensors. The security system of claim 1, wherein the display unit displays the real image and the synthetic image so that the horizontal movement of the object in each image is aligned. The security system of claim 1, wherein the composite image is a rotated or flipped map including the detection area with the movement of the object superimposed on it. The security system of claim 1, wherein the real image is obtained by rotating or inverting raw data of an image of the detection area. The security system of claim 1, further comprising a notification unit that notifies an external communication terminal when the detection sensor detects an object. The security system of claim 6, wherein the notification unit transmits at least one of the real image and the synthetic image to the communication terminal. A program used in a security system in which detection sensors are installed at multiple locations in a security area,
When an object is detected by a detection sensor, a real image of the object captured by an imaging means together with the detection area of the detection sensor and a composite image in which a marker indicating the real-time movement of the object is superimposed on an image of the detection area viewed from a different angle from the real image are displayed on the same screen, thereby causing the computer to function as a display unit that simultaneously displays the object captured in the real image and the marker on the composite image ,
A program for a security system in which the display unit performs a rotation or inversion process on the real image or the image of the detection area so that the direction of movement of the object in the real image and the direction of movement of the marker on the composite image are aligned .