JPH06131569A - Invasion detector - Google Patents

Abstract

PURPOSE:To obtain an invasion detector capable of judging a normal person and an invader by a simple passage pattern and preventing the generation of invasion at the time of judging a normal person or an invader by a passage pattern. CONSTITUTION:After checking that only a preceding person exists in a passage in a detection zone, whether one or more backword motion patterns are included in the passage pattern of the person concerned or not is judged (step S5) based upon a detection signal from a pressure sensor. In this case, the person is regarded as a normal passenger, whether the passenger arrives at the front of a door or not is judged (step S6) based upon a detection signal from the pressure sensor and an electric lock 4 of the door is temporarily unlocked, so that the passenger can open the door and enter into a room (steps S7, S8). In the case of a normal walking pattern from which no backword motion pattern is detected in the step S5, the person is regarded as an invader, and at the time of arrival at the front of the door, an invasion generation signal is sent (S9, S10) based upon a detection signal from the pressure sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intrusion detection device for preventing an intruder from entering a specific room in a building.

[0002]

2. Description of the Related Art Conventionally, as an intrusion detecting device of this type, for example, there is one shown in Japanese Patent Publication No. 64-751. Figure 7
FIG. 3 is a plan view of a passage in a building for explaining the technique disclosed in the above publication. In the figure, 1 is an entrance of a building, 2 is a specific room in the building, 3 is a passage in a detection zone leading from the entrance 1 to the room 2, and the passage 3 is divided into a plurality of divided partial passages. Pressure sensor a ₁ that operates when a person gets on the floor
a ₁₁ , b _{1 to} b ₁₁ , c _{1 to} c ₁₁ are provided. In addition,
Reference numeral 4 denotes an electric lock installed on the door of the room 2 which is unlocked by a control device (not shown) based on the detection signals of the pressure sensors.

In the intrusion detection device having the above structure, the walking pattern for walking on the passage 3 in the detection zone is
For example, when it is predetermined as shown by the solid line arrow in the figure, and when walking according to this predetermined walking pattern,
Based on the detection signal of each pressure sensor which becomes “H”, the control device (not shown) regards the person as a normal person and controls the electric lock 4 installed on the door of the room 2 to be unlocked. Further, an intruder who does not follow the walking pattern is detected based on the detection signal of each pressure sensor, and the invisible person can easily find the intruder.

[0004]

However, in the above-described conventional intrusion detection device, a normal passerby is the entrance 1
It is necessary to remember in advance the difficult walking pattern on the passage 3 from the room 2 to the room 2, and when the user walks by making a mistake in a pattern other than the predetermined walking pattern, the electric lock 4 is not unlocked and the room 2 is in the room 2. There was a problem that I couldn't go to.

The present invention has been made in view of the above-mentioned points, and it is not necessary to remember all the walking patterns on the passage from the entrance to the room, and it is possible to pass with a gentle traffic pattern in which only one point pattern is remembered. An object of the present invention is to obtain an intrusion detection device that can detect an intruder and prevent the intrusion.

[0006]

The intrusion detection device according to claim 1 of the present invention is provided with a sensor for detecting a passage pattern of a passerby in a passage leading to a door for which passage is controlled, and the detected passage pattern. Is a normal walking pattern and 1
If the passerby is normal, the passerby is regarded as a normal person and the door open signal is transmitted, and when the pass pattern is a normal walking pattern, the passerby is regarded as an intruder and an intrusion generation signal is transmitted. Be prepared.

Further, the intrusion detection device according to claim 2 is provided with a sensor for detecting a passage pattern of a passerby in a passage leading to a door for controlling passage, and the detected passage pattern is a normal walking pattern, or Even if the walking pattern is abnormal, when the door is not opened and the passenger does not pass within a predetermined time, the passerby is regarded as an intruder and a control means for sending an intrusion occurrence signal is provided.

[0008]

In the intrusion detection device according to claim 1 of the present invention, the control means regards the passerby as a normal person when the passing pattern detected by the sensor differs from the normal walking pattern by one or more places, and the door door. On the other hand, when the traffic pattern is a normal walking pattern, the pedestrian is regarded as an intruder and an intrusion generation signal is transmitted.

Further, in the intrusion detection device according to claim 2, the control means opens the door within a predetermined time even if the traffic pattern detected by the sensor is a normal walking pattern or an abnormal walking pattern. When no passing action is performed, the passerby is regarded as an intruder and an intrusion generation signal is transmitted.

[0010]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a main configuration diagram of the intrusion detection device according to the first embodiment. In the figure, 5 is a plurality of pressure sensors a _{1 to} a ₁₁ , b _{1 to} b ₁₁ , c ₁ provided in the passage in the detection zone.
When traffic pattern passers on the basis of the detection signal to c ₁₁ are different normal walking pattern and one location or more, for example 1 at places regarded as a normal person when walking pattern backtracking, the door for traffic controlled to permit the passage A control device that sends a door-open signal (unlocking signal for the electric lock 4), considers an intruder when the traffic pattern is a normal walking pattern, and sends an intrusion generation signal (that is, an alarm signal) to block traffic. is there.

Reference numeral 6 is a broadcasting device provided in a passage in the detection zone, which announces to the intruder a prerecorded content that the intruder will leave the passage in the detection zone based on the intrusion generation signal. 7 is an IT provided in a passage in the detection zone
V camera, 8 is a video switch, 9 and 10 are monitor TVs and VTRs installed in a manager's room in the building, etc., and the video switch 8 is opened based on the above-mentioned intrusion occurrence signal, and IT
The video signal from the V camera 7 is the monitor TV 9 and the VTR.
It is sent to 10, and an intruder is displayed and recorded. Further, 11 is a buzzer for notifying a guardman or a manager of occurrence of intrusion.

Here, the control device 5 is a CPU
5a, a ROM 5b that stores a processing program and fixed data, a RAM 5c that temporarily stores processing data and input data, and a detection signal from a pressure sensor, and the passing pattern of a passerby becomes a normal walking pattern. An input / output interface 5d that sends an unlocking signal to the electric lock 4 when different abnormal walking patterns and sends an intrusion generation signal when the traffic pattern is a normal walking pattern.
Is equipped with.

Next, the operation of the above configuration will be described with reference to FIG. FIG. 2 shows the CP stored in the ROM 5b.
It is a flow chart which operates based on control of U5a. First, the CPU 5a includes the pressure sensors a _{1 to} a ₁₁ and b ₁ to.
b _11, based on the detection signal c ₁ to c ₁₁ determines whether people came into passages in the detection zone (step S
1). In addition, it is determined whether or not another succeeding person has entered the passage in the detection zone (step S2), and if another person is following, a walking pattern is determined. Is unclear, the broadcast device 6 announces that it will leave the detection zone in order to make a determination after determining the walking pattern of the preceding person (step S3).

After the announcement by the broadcasting device 6, it is judged whether the following person has left the detection zone (step S4), and it is confirmed that only the preceding person exists in the passage in the detection zone, and the detection signal of the pressure sensor is detected. Based on this, it is determined whether or not the person has walked in a pattern in which the traffic pattern of the person goes back (step S5). For example, as shown in FIG. 5, after the pressure sensor a ₅ detects the pressure sensor a ₃ or b ₄
Is also detected, and similarly, a walking pattern that returns when the pressure sensor b ₃ or the pressure sensor b ₁ or c ₁ is detected is determined.

In such a case, the passerby is regarded as a normal person, and it is determined whether the passerby has come in front of the door based on the detection signal of the pressure sensor b ₁₁ (step S6), and the electric lock 4 for the door 4
By temporarily controlling the unlocking, the passerby can open the door and pass through the room (steps S7 and S8).
When NO is determined in the above step S2, the process proceeds to step S5, and when NO is determined in step S4, the process proceeds to step S3.

On the other hand, in the step S5, when the normal walking pattern in which the backward walking pattern is not detected is regarded as an intruder, and when it comes in front of the door, an intrusion occurs based on the detection signal of the pressure sensor b _11. Send a signal (S
9, S10).

In steps S5 and S6,
If the walking pattern for returning is determined, but there is no detection signal from the pressure sensor b ₁₁ in front of the door and a person does not come in front of the door, the person returns to the entrance and is detected in step S11. Whether or not the vehicle has left the zone is determined based on the pressure sensors a ₁ , b ₁ , and c ₁ , and if NO is determined, it is determined that the person does not know the walking pattern in which passage is permitted and the predetermined amount is determined. After a lapse of time, it is regarded as an intruder and an intrusion generation signal is transmitted (steps S12 → S10). In addition, when it is determined to be NO in step S9, step S9
5, when NO is determined in step S12, the process proceeds to step S11 and the above step S12.
When it is determined to be YES in 11, the process ends.

Then, in step S10, when the intrusion occurrence signal is sent from the control device 5, based on this, the video signal of the ITV camera 7 is monitored by opening the video switch 8 as shown in FIG. T
It is displayed by V9 and recorded on VTR 10 (step S21). Further, the buzzer 11 sounds and the occurrence of intrusion is notified to the guardman or the administrator (step S22), and appropriate processing is performed on the intruder (step S23).

Example 2. In the first embodiment, the abnormal walking pattern regarded as a normal person is determined by the backward walking pattern. However, in the second embodiment, the walking pattern in the detection zone is 1
The same effect as that of the first embodiment can be obtained by determining that the walking pattern is an abnormal walking pattern that is regarded as a normal person when there is a walking pattern in which the detection signal of the pressure sensor cannot be obtained even at a certain place.

For example, as shown in FIG. 6, the pressure sensor a ₁
After the detection signals of a and a ₂ are obtained, the detection signal of the pressure sensor that is longer than the normal stride cannot be obtained.
When a pattern fly shown in (4) (Note that the step length of the normal corresponding to the length of one pressure sensor) (1) without the detection signal of the pressure sensor a ₃ is obtained, the pressure sensor a _4, When the detection signal of a ₅ is obtained. (2) When the detection signals of the pressure sensors b ₄ , b ₅ and b ₆ are obtained without the detection signal of the pressure sensor a ₃ or b ₃ . (3) When the detection signals of the pressure sensors c ₂ , c ₃ , c ₄ and c ₅ are obtained without the detection signals of the pressure sensor b ₂ being obtained. (4) When the detection signals of the pressure sensors c ₁ , c ₂ , ..., C ₆ are obtained without the detection signals of the pressure sensor b ₁ or b ₂ .

In such a walking pattern, it can be regarded as a normal person. At this time, the operation of the control device 5 is completely the same except that the contents of step S5 of the flowchart shown in FIG. 2 are rewritten to the contents of step S5 'of FIG.

Example 3. Furthermore, abnormal gait pattern regarded as normal subjects, when the pressure sensor as shown in FIG. 7 are arranged in addition to the first and second embodiments, for example, a pressure sensor a ₁
→ a ₂ → b ₂ → b ₁ → a ₁ walking pattern in which detection signals of a ₁ are sequentially obtained, pressure sensor a ₁ → b ₁ → c ₁ → c ₂ → b
₂ toward the door direction so that the detection signals of ₂ → a ₂ are sequentially obtained
After the crossing walking pattern and the detection signal of the pressure sensor a ₁ are obtained, the detection signal of the pressure sensor a ₂ is not obtained, the detection signal of the pressure sensor a ₃ is obtained, and the detection signal of the pressure sensor a ₄ is obtained. It is possible to use any walking pattern such as a two-fly walking pattern in which the detection signal of the pressure sensor a ₅ can be obtained without returning, a walking pattern that returns once in front of the door, and
You may combine them.

Example 4. When a normal person passes through the door, I
Other ID identification devices such as a D card, a numeric keypad, and a fingerprint may be combined.

Example 5. The sensor that detects the traffic pattern may be any sensor other than the pressure sensor, and a pattern recognition method using an image may be used.

Example 6. Although the first and second embodiments determine one passerby, two or more passersby may be determined. At that time, each person's travel route is traced to determine whether or not each person has an abnormal walking pattern.

Example 7. The entrance door of the passage may be closed so that no intruder can exit.

Example 8. The door may be any door such as a manual door or a rotating door.

[0028]

As described above, according to claim 1 of the present invention, a sensor for detecting the passage pattern of a passerby is provided in the passage leading to the door for which passage is controlled, and the detected passage pattern is usually When the walking pattern is different from the walking pattern of 1 or more, the passerby is regarded as a normal person and the door open signal of the door is transmitted, and when the walking pattern is a normal walking pattern, the passerby is regarded as an intruder and an intrusion occurrence signal is generated. Since the control means for sending out is provided, it is easy to remember the traffic pattern, and on the other hand, the intruder can be surely discriminated and the intrusion can be prevented, and sufficient security can be ensured.

According to a second aspect of the present invention, a sensor for detecting a passage pattern of a passerby is provided in a passage leading to a door for which passage is controlled, and the detected passage pattern is a normal walking pattern or an abnormal walking pattern. However, when there is no action to open the door within the predetermined time and the passerby is regarded as an intruder, a control means for sending an intrusion occurrence signal is provided, so the walk is permitted. It is possible to reliably judge a person who does not know the pattern and prevent the intrusion.

[Brief description of drawings]

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

FIG. 2 is an operation flowchart according to the first embodiment of the control device 5 of FIG.

3 is an operation flowchart based on an intrusion occurrence signal output from the control device 5 of FIG.

FIG. 4 is an explanatory diagram of an operation example according to the second embodiment, which replaces step S5 of FIG.

FIG. 5 is an explanatory diagram of a backtracking pattern (walking pattern) according to the first embodiment.

FIG. 6 is a flying pattern (walking pattern) according to the second embodiment.
FIG.

FIG. 7 is an explanatory diagram of a pressure sensor in a detection zone.

[Explanation of symbols]

a _{1 to} a ₁₁ pressure sensor b _{1 to} b ₁₁ pressure sensor c _{1 to} c ₁₁ pressure sensor 3 passage 4 electric lock 5 controller

Claims (2)

[Claims] 1. A sensor for detecting a passage pattern of a passerby is provided in a passage leading to a door for controlling passage, and when the detected passage pattern is different from a normal walking pattern by one or more places, the passerby is normally detected. An intrusion detection device, which is regarded as a person and sends a door-open signal of the door, and when the traffic pattern is a normal walking pattern, considers the traffic person as an intruder and sends an intrusion generation signal. . 2. A sensor for detecting a passage pattern of a passerby is provided in a passage leading to a passage control door, and the passage pattern detected is a normal walking pattern or an abnormal walking pattern for a predetermined time. An intrusion detection device, which is provided with a control means that regards the passerby as an intruder and sends out an intrusion occurrence signal when no action is taken to open the door inside.