JPH06195580A - Security system - Google Patents

Abstract

PURPOSE:To provide a security system which sends image information from a monitor means to a single receiving means, provided in an inspector office such as a guardroom, like centralization. CONSTITUTION:This security system is constituted including a movement detecting means 5 which sequentially switches and receives individual pieces of image information from plural monitor means 2 and detects the presence of a moving body exceeding a specific standard in the individual pieces of image information and a screen dividing means 7 which divides the display screen of the single receiving means 9 so as to display the moving body exceeding the specific standard at specific display positions as to the individual pieces of image information from the monitor means 2. Further, the system includes a video recording and reproducing means 9 like a VTR device for recording and reproducing pieces of image information from monitor means 2 wherein the presence of the moving body exceeding the specific standard is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security system, and in order to prevent criminal acts such as theft in a building or factory, monitoring such as a television camera is provided at a plurality of places inside or outside the building or factory. It is possible to install the means and to transmit the image information from these monitoring means centrally to the receiving means such as a single TV set installed in the surveillance staff such as a guard room. It is related to the security system that has been set.

[0002]

2. Description of the Related Art As a conventional security system of this type as described above, monitoring means such as a television camera is installed in a plurality of places inside and outside a place where crime prevention is required, such as a building or a factory, and these monitoring are performed. It has been known that the image information from the means is monitored by a television receiver or the like as a single receiving means, and the image information is recorded by an attached VTR device.

However, the above-described conventional security system has some drawbacks as follows. That is,
In order to record / record image information (video) from the above-mentioned plural TV cameras in time series, prepare VTR devices and video tapes corresponding to the number of TV cameras used. Was needed. Further, in order to check the video recorded on the video tape, a huge amount of labor and working time are required. Furthermore,
As described above, in order to prepare a plurality of VTR devices, a high equipment cost must be paid. In the above-mentioned conventional technique, there is also a method of sequentially displaying images from a plurality of television cameras by a single television receiver, but in such a case, as the number of television cameras increases, The connection time with the television set assigned to each television camera is significantly limited, and the time for monitoring the image from the corresponding television camera is significantly shortened.

[0004]

The conventional techniques of this type have the problems as described above. That is,
(1) In order to record and record images from a plurality of TV cameras in time, it is necessary to prepare VTR devices and video tapes corresponding to the number of TV cameras in use. (2) Enormous labor and work time are required to check the video recorded on the video tape; (3) To prepare a plurality of VTR devices, a high equipment cost is required. Have to do;
(4) When images from a plurality of TV cameras are sequentially displayed by a single TV receiver, connection with a TV receiver assigned to each TV camera as the number of TV cameras increases. There is a problem that the time is remarkably limited, and the time for monitoring the image from the corresponding TV camera is significantly shortened.

The present invention has been made to solve the above-mentioned problems. For example, in order to prevent a criminal act such as theft in a building or factory, a television is set at a plurality of places inside or outside the building or factory. Monitoring means such as a camera is installed, and the image information from these monitoring means is centralized to the receiving means such as a single television set provided in a guard station such as a guard room. It is intended to provide a security system that can be transmitted.

[0006]

The security system according to the present invention has been made in order to achieve the above-mentioned object, and provides image information from the monitoring means (2) individually installed at a plurality of monitoring target locations. A security system capable of being centrally transmitted to a single receiving means (9) provided at a predetermined place: individual image information from the plurality of monitoring means is sequentially switched and accepted A movement detecting means (5) capable of detecting the presence of a moving object that exceeds a predetermined reference in the individual image information; and in the individual image information from the plurality of monitoring means, the predetermined reference. A screen dividing means (7) for dividing the display screen of the single receiving means in order to display, on a predetermined display part, the presence of a moving object beyond the range. It is characterized in. Further, the security system according to the present invention is: recording / reproducing for recording / reproducing the one in which the presence of a moving object exceeding the predetermined reference is detected in the individual image information from the plurality of monitoring means. Means (10); are further included.

[0007]

According to the security system of the present invention, movement of an object at a place to be monitored is monitored and detected by a movement detection device at a predetermined time interval, and for example, the speed of the object exceeds a certain allowable range. While moving, the relevant image is displayed on a part of the display screen through the screen dividing device, and only the image information corresponding to this predetermined part is recorded for later consideration. This offers the advantage of being able to reduce the oversight of surveillance personnel and to save on VTR means and videotapes used for recording video information.

[0008]

1 is a schematic block diagram of a security system according to a first embodiment of the present invention. In FIG. 1, a control unit (CPU) 1 is composed of, for example, a microcomputer having performances such as required data processing and operation commands, and based on a program stored in an attached ROM (not shown), It controls the required operation of the device according to the first embodiment. Camera section 2
Is composed of a plurality of (here, four) cameras (for example, TV cameras) 2A to 2D, and these cameras are appropriately installed in, for example, a commercial building or a site requiring monitoring inside and outside a factory. The A / D conversion unit 3 includes # 1 to # 4 A / D conversion means 3A individually corresponding to the plurality of cameras.
~ 3D and related cameras 2A ~ 2D
The (analog) image information from is digitally converted into each. The switching unit 4 includes the control unit (CP
U) Under the control of 1, the plurality of A / D conversion means 3A
3D is switched and connected toward the movement detection unit 5 in the subsequent stage. For example, with a time interval of 2s, #
It operates so as to sequentially switch from the 1A / D converting means 3A to the # 4 A / D converting means 3D. The time interval (switching time) set by the switching unit 4 is shorter than the (switching) selection time by the video signal selecting unit 11 described later, and the undetected state of the moving object is reduced accordingly. It is supposed to do. The movement detector 5 includes a controller (C
PU) 1 is operated under the control of the PU) 1 and sequentially transmits the digital information from the A / D conversion section 3 sent through the switching section 4 in the preceding stage, and at the same time, a predetermined information in the digital information is transmitted. It detects the presence of an object that moves beyond the allowable limit. The memory unit 6 may be of a normal RAM type, and stores the digital information transmitted from the movement detection unit 5 in the preceding stage in a readable / writable manner with respect to a predetermined address unit. Under the control of the control unit (CPU) 1, the screen division unit 7 detects the presence of an object moving beyond a predetermined allowable limit in the digital information transmitted from the movement detection unit 5. The display screen of the television receiver 9 described later is divided to display the corresponding video. The D / A conversion unit 8 performs corresponding analog conversion on the digital information transmitted from the movement detection unit 5 side. The television receiver 9 may be, for example, a normal cathode ray tube receiver, and displays analog (video) information from the D / A converter 8 in the preceding stage on a designated display screen. The VTR unit 10 includes a control unit (CPU) 1
Under the control of, the video information displayed on the television receiver 9 is recorded and reproduced. Under the control of the control unit (CPU) 1, the video signal selection unit 11 allows the digital signals that are sequentially switched from the # 1 A / D conversion unit 3A to the # 4 A / D conversion unit 3D. This is to select and display on the display screen of the television receiver 9 a moving object that does not move at a speed exceeding the limit at a predetermined time interval.

In the security system according to the first embodiment of the present invention configured as described above, its operation is started, and within the range of the field of view monitored by the camera unit 2 (for example, it is monitored by the television camera 2A). Range of field of view),
When the movement detection unit 5 detects the presence of an object moving at a speed exceeding a certain limit, the fact is notified to the control unit (CPU) 1. Then, in response to this, the screen division unit 7 operates to divide the display screen of the television image receiving unit 9 and display an image corresponding to a certain predetermined divided display screen. FIG. 2 shows a display screen 90 of the television receiver 9.
In this example, the first display section 9A to the fourth display section 4D are divided.
As described above, for example, when the movement detection unit 5 detects the presence of an object moving at a speed exceeding a predetermined limit in the range of the field of view monitored by the television camera 2A in the camera unit 2, this The corresponding video will be displayed in the first display section 9A. Further, for example, when the movement detection unit 5 does not detect the presence of an object moving at a speed exceeding a predetermined limit in the range of the visual field monitored by the television camera 2B, the image from the television camera 2B is displayed. It is repeatedly displayed at a predetermined portion (for example, the entire surface of the display screen 90) of the display screen of the television receiver 9 with a predetermined time interval.
That is, when a moving object is detected in the range of the visual field monitored by the television camera 2A and at the same time, no moving object is detected in the range of the visual field monitored by the television camera 2B, the image from the television camera 2A is displayed. TV receiver 9
Will be displayed in the first display section 9A of the display screen, and at the same time, the image from the TV camera 2B will be displayed in, for example, the third display section 9C of the display screen of the TV receiver 9. Further, the VTR unit 10 operates under the control of the control unit (CPU) 1 only when a moving object is detected, so that a more efficient recording / playback operation becomes possible.

FIG. 3 is a schematic configuration diagram of a security system according to a second embodiment of the present invention. This Figure 3
As can be seen from the above, the configuration is almost the same as that of the first embodiment described above except that the switching unit 4 is omitted in the configuration of FIG. That is, in FIG. 3, the control unit (CPU) 1 is composed of, for example, a microcomputer having a required performance, and the second embodiment is based on a program stored in an attached ROM (not shown). It controls the required operation of the device according to. The camera unit 2 is composed of a plurality of (here, four) cameras (for example, TV cameras) 2A to 2D, and these cameras are appropriately installed in, for example, a commercial building or a site requiring monitoring inside or outside a factory. ing. The A / D conversion unit 3 individually corresponds to the plurality of cameras # 1 to # 4.
It is composed of A / D conversion means 3A to 3D and digitally converts image (analog) information from the related cameras 2A to 2D. The movement detection unit 50 operates under the control of the control unit (CPU) 1, and # 1 to # 4 individually corresponding to the plurality of # 1 to # 4 A / D conversion units 3A to 3D. It is composed of the movement detecting means 5A to 5D, and the preceding stage # 1 to # 4 A / D converting means 3A to 3D.
In addition to individually transmitting the digital information from the device, the presence of an object that moves beyond a predetermined allowable limit in the digital information is detected. Since the movement detection unit 50 having such a configuration is provided, it becomes possible to constantly monitor the presence or absence of an abnormal moving object in the image of each camera by the movement detection unit individually corresponding to the plurality of cameras. Unlike the case of the first embodiment described above, it is possible to reliably prevent oversight of an abnormal situation due to switching of video signals. The memory section 6 stores the digital information sequentially transmitted from the # 1 to # 4 movement detecting means 5A to 5D in the movement detecting section 50 at the preceding stage so that the digital information can be read / written at a predetermined address. Under the control of the control unit (CPU) 1, the screen division unit 7
# 1 to # 4 movement detecting means 5A in movement detecting section 50
When the presence of an object that moves beyond a predetermined allowable limit is detected in the digital information sequentially transmitted from 5D, the display screen of the television receiver 9 to be described later is divided to display the corresponding video. It is what makes me. The D / A conversion unit 8 includes # 1 to # 4 movement detection means 5A to 5 in the movement detection unit 50.
The digital information sequentially transmitted from D is subjected to corresponding analog conversion. The television receiver 9 may be, for example, an ordinary cathode ray tube receiver, and displays the image information from the D / A converter 8 in the preceding stage on a designated display screen. The VTR unit 10 is a control unit (CPU)
Under the control of 1, the video information displayed on the television receiver 9 is recorded / reproduced. And
Under the control of the control unit (CPU) 1, the video signal selection unit 11 detects a moving object moving at a speed exceeding the allowable limit in the digital signals sequentially transmitted from the # 1 A / D conversion unit 3A. The nonexistent one is selected and displayed on the display screen of the television receiver 9 with a predetermined time interval.

In the security system according to the second embodiment configured as described above, its operation is started and within the range of the field of view monitored by the camera unit 2 (for example, the field of view monitored by the television camera 2A). (In a range), when the presence of an object moving at a speed exceeding a predetermined limit is detected by the # 1 movement detecting means 5A in the movement detecting section 50, the corresponding # 1 movement detecting section 5A is used to The effect is notified to the control unit (CPU) 1. Then, in response to this, the screen dividing unit 7 operates to divide the display screen of the television image receiving unit 9 and display a corresponding video on a certain predetermined divided display screen. On the other hand, for example, in the range of the visual field monitored by the television camera 2B, the presence of an object moving at a speed exceeding a predetermined limit is not detected by the # 2 movement detecting means 5B in the movement detecting unit 50. In this case, the image from the TV camera 2B is repeatedly displayed on a predetermined portion of the display unit of the TV image receiving unit 9 at a predetermined time interval via the corresponding # 2 movement detecting unit 5B. Become.

[0012]

As described above, in the security system according to the present invention, the image information from the monitoring means (2) individually installed at a plurality of monitoring target locations is provided in a single location. A security system made possible to transmit centrally to the receiving means (9):
Movement detection means (5) capable of sequentially switching and receiving individual image information from the plurality of monitoring means, and detecting the presence of a moving object exceeding a predetermined reference in the individual image information; In the individual image information from a plurality of monitoring means, the display screen in the single receiving means is displayed in order to display the one in which the presence of a moving object exceeding the predetermined reference is detected on a predetermined display part. It is characterized by including a screen dividing means (7) for dividing. Further, the security system according to the present invention is: recording / reproducing for recording / reproducing the individual image information from the plurality of monitoring means, in which the presence of a moving object exceeding the predetermined standard is detected. Means (1
0); is further included.
Then, for the configuration having such characteristics, the image from the TV camera installed at each place is selected in which the presence of an object moving at a speed exceeding a certain allowable range is selected. It is designed to be displayed on a television receiver, which reduces the burden on surveillance personnel.
There is also an economic advantage in having a single VTR device check video from multiple television cameras.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a security system according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram for illustrating a mode of division of a display screen in the above embodiment.

FIG. 3 is a schematic configuration diagram of a security system according to a second embodiment of the present invention.

[Explanation of symbols]

1 --- control unit (CPU); 2--camera unit; 3--A /
D conversion unit; 4--switching unit; 5--movement detection unit; 6-memory; 7-screen division unit; 8--D / A conversion unit; 9 ---
TV image receiving unit; 10-VTR unit; 11--Video signal selecting unit.

Claims (2)

[Claims] 1. A security system capable of integrally transmitting image information from monitoring means individually installed at a plurality of monitoring target locations to a single receiving means provided at a predetermined location. And: movement detection means capable of sequentially switching and receiving individual image information from the plurality of monitoring means, and detecting the presence of a moving object exceeding a predetermined reference in the individual image information; and In the individual image information from a plurality of monitoring means, the display screen in the single receiving means is displayed in order to display the one in which the presence of a moving object exceeding the predetermined reference is detected on a predetermined display part. A security system including a screen dividing unit for dividing. 2. The security system according to claim 1, wherein: in the individual image information from the plurality of monitoring means, it is detected that a moving object exceeding the predetermined standard is detected. Recording / playback means for playback;
A security system further comprising: