JPH0658676U - Intrusion detection device - Google Patents

Abstract

(57) [Summary] [Purpose] If there is an intruder in the building, promptly detect it,
Furthermore, it is possible to execute the situation judgment. [Structure] Intrusion sensor 13 for detecting intruders in the building
And a surveillance camera 17 which is turned on by the detection signal of the intrusion sensor 13 and is set in an operating state, and a detection signal from the intrusion sensor 13 and a video signal captured by the surveillance camera 17 are transmitted and displayed outside the building. Optical space transmission device 1
8 and 19 and a monitor TV 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an intrusion detection device capable of detecting an intruder or the like inside a building and confirming an intrusion situation from outside the building.

[0002]

[Prior art]

 For example, an intrusion sensor is used to monitor an unattended building, and an intrusion sensor installed in this building detects the intrusion of an intruder from the outside, for example. The signal is transmitted to the receiver by wire or wirelessly to notify relevant persons such as security guards. Then, the security guards, etc. judged the presence of the intruder and entered the building to check the intruder status. In such a case, there is a security problem in which an intruder may injure related persons such as security guards, and security personnel who deal with important facilities such as financial relations always have multiple people.

[0003]

[Problems to be solved by the device]

 In order to avoid the above-mentioned problems, it has been practiced to constantly monitor with a surveillance camera or record the intrusion situation with this surveillance camera and record it on a VTR. However, there is a problem in that it is difficult to take such posture for constant monitoring, and in the case of using a VTR, the intrusion situation cannot be confirmed promptly.

The present invention has been made in view of the above points, and when an intruder or the like in the building is detected, an intrusion detection device that can promptly detect the intruder and execute the situation determination can be provided. The purpose is to provide.

[0005]

[Means and Actions for Solving the Problems]

 That is, the intrusion detection device according to the present invention, when an intruder detects an intruder in the building, sends the detection signal to the receiver, and the surveillance camera captures and displays the situation of the intrusion location, and transmits this image in the optical space transmission. The feature is that it can be transmitted to the monitor TV outside the building, and the intrusion situation can be grasped safely and surely and dealt with.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the structure of an intrusion detecting device according to the present invention. When an intruder 12 is present in the building 11, the intrusion sensor 13 detects the intruder 12. The detection signal detected by the intrusion sensor 13 is transmitted from the transmission antenna 14 installed outside the building 11 via a cable or the like and is received by the reception antenna 15. The reception antenna 15 The detection signal received at is transmitted to the receiver 16.

A signal from the intrusion sensor 13 controls the surveillance camera 17, and the surveillance camera 17 is turned on by this signal. The video signal captured by the power-on monitoring camera 17 is transmitted from the optical transmitter 18, received by the optical receiver 19, and displayed on the monitor television 20.

That is, when the presence of the intruder 12 is detected by the intrusion sensor 13, it is detected by the receiver 16 installed at an arbitrary location outside the building 11, and the relevant person such as a security guard is notified. At the same time, the surveillance camera 17 is activated. That is, the surveillance camera 17 is normally in a power-off state (when there is no intruder 12 or the like), and the power is turned on only when the intrusion sensor 13 has an abnormal situation caused by the intruder 12 or the like. The range detected by the sensor 13 is captured. The video signal thus captured by the surveillance camera 17 is sent to the optical transmitter 18 installed outside the building 11.

The optical transmitter 18 forms an optical space transmission device together with the optical receiver 19, and is a device using a light emitting element such as a semiconductor laser or a photodiode, for example. The optical transmitter 18 is composed of a lens system so that the diameter of the incoming light beam at the receiving point can be minimized. On the other hand, the optical receiver 19 uses a Fresnel lens, which is a large-diameter condensing system, for fluctuations such as spread of the light beam due to atmospheric propagation and light beam bending due to a change in refractive index. With such a lens, the signal transmitted to the outside of the building 11 has directivity.

That is, the detection signal is transmitted only from the optical transmitter 18 to the optical receiver 19 set in an arbitrary place in advance, and the detection signal thus received by the optical receiver 19 is sent to the monitor television 20. The video of the intruder 12 captured by the surveillance camera 17 is displayed on the screen of the monitor TV 20. In this case, although not shown in the figure, this video can be recorded on the VTR. Then, a person concerned such as a security guard can safely and surely enter the inside of the building 11 through the screen of the monitor 20 and can promptly contact the person concerned such as the police.

[0011]

[Effect of device]

 As described above, according to the present invention, the intrusion sensor detects the intrusion situation of the building by an intruder, the surveillance camera captures the situation, and the image of the scene is displayed on the monitor TV via the optical space transmission device. , It is possible to confirm the intrusion situation without the intruders etc. being injured by the concerned persons such as security guards. This eliminates the need to deploy multiple guards and can reduce personnel.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an intrusion detection device according to an embodiment of the present invention.

[Explanation of symbols]

12 ... Intruder, 13 ... Intrusion sensor, 16 ... Receiver, 17
... surveillance camera, 18 ... optical transmitter, 19 ... optical receiver, 20
… Monitor TV.

Claims (2)

[Scope of utility model registration request] 1. An intrusion sensor for detecting an intruder or the like in a building, a surveillance camera which is turned on by a detection signal of the intrusion sensor and is set in an operating state, a detection signal from the intrusion sensor and the surveillance camera. An intrusion detection device, comprising: means for transmitting and displaying the video signal captured by (1) outside the building. 2. The intrusion detection device according to claim 1, wherein the transmitting means is an optical space transmission device.