JPH0436437B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a traffic control device that monitors unauthorized entrances and exits to a specific area, and in particular, detects conditions according to the situation of unauthorized entrances and exits to the specific area. The present invention relates to a traffic control device that can detect quickly and reliably by making changes.

[Conventional technology]

Conventionally, this type of equipment includes computer centers,
In specific areas that require special monitoring, such as financial institutions and nuclear facilities, intrusion detectors monitor the surroundings of the area and multiple discrimination methods are used to determine whether passersby are allowed to pass through the entrances and exits of the area. It is often configured with a traffic control door.

In particular, since the above-mentioned intrusion detector is installed outdoors, multiple types of intrusion sensors with different intrusion detection modes are installed in multiple layers around a specific area to prevent malfunctions due to weather or the influence of birds and animals.
Then, when the logical conditions of multiple types of intrusion sensor outputs are recognized, human intrusion is determined, and when only one of the intrusion sensor outputs is detected, it is not recognized as an intrusion, thereby preventing erroneous determination of intrusion occurrence. .

Therefore, before an intruder enters the specified monitoring area from outside, the intruder is detected by the intrusion detector, and a person who has entered the specified monitoring area by any means can close the traffic control door and leave the specified monitoring area. Even if you try to escape, the intrusion detector will detect it.

[Problem to be solved by the invention]

However, in order to prevent malfunctions, conventional intrusion detectors detect an intruder when multiple types of intrusion sensors are activated at the same time. Even if an emergency situation occurs, such as breaking through a traffic control door and escaping outside the designated surveillance area, multiple types of intrusion sensors will operate simultaneously, just as they do when an intrusion is detected.
This system had the disadvantage of not noticing an emergency situation such as an intruder's escape, which resulted in a delay in responding to the emergency situation.

This invention was made to solve the above-mentioned problems, and it changes the detection conditions of the intrusion detector to the traffic control door depending on the situation, so that in the event of an emergency, intrusion can be detected even if a single intrusion sensor is activated. This paper proposes a traffic control device that can quickly and reliably detect intrusions.

[Means to solve the problem]

The traffic control device according to the present invention includes an intrusion detector constituted by a plurality of intrusion sensors arranged in multiple layers on the outer periphery of a specific area, and a person who is permitted to pass at the entrance/exit of the specific area to discriminate and control traffic. a traffic control door that detects illegal traffic from the traffic control door, and an illegal traffic detector that detects illegal passage from the traffic control door to outside a specific area; and a traffic control door that detects illegal passage based on the detection result of the illegal traffic detector. A condition change setting device is provided to change the detection condition so that the occurrence of intrusion can be detected only by the intrusion detector adjacent to the intrusion detector.

[Effect]

According to this invention, the intrusion detector usually determines an intrusion when a plurality of intrusion sensors are activated, and does not determine that an intrusion has occurred when a single intrusion sensor operates due to weather or the influence of birds and animals. When the illegal traffic detector detects that a person breaks through the traffic control door and illegally escapes from the specified monitoring area, the condition change setting device receives the detection result and detects the intrusion sensor adjacent to the traffic control door where the escape occurred. The detection conditions are changed so that the occurrence of an intrusion is determined only by intrusion detection, and the intruder is immediately identified.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1, FIG. 2A,
The explanation will be based on FIGS. B, FIG. 3, FIG. 4, and FIG. 5. Fig. 1 is an overall layout diagram of this embodiment, Fig. 2A is a front view of the entrance/exit portion of this embodiment, Fig. 2B is a sectional view taken along line A-A in Fig. 2A, and Fig. 3 is a diagram of this embodiment. 4 is a block diagram of the traffic control door and unauthorized traffic detector, and FIG. 5 is a circuit diagram of the intrusion detector.

In each of the above figures, the traffic control device according to the present embodiment includes an intrusion detector 3 that monitors the outer periphery of a building 1, which is a specific area, and an intrusion detector 3 that monitors the outer periphery of a building 1, which is a specific area, and an intrusion detector 3 that detects whether or not a person is permitted to pass through an entrance/exit 2 of the building 1. A traffic control door 4 that discriminates and controls traffic; an illegal traffic detector 5 that detects illegal traffic at the traffic control door 4; and a detection by the intrusion detector 3 based on the detection results of the illegal traffic detector 5. Condition change setting device 6 for changing conditions
and an ITV confirmation device 7 that confirms the intrusion site based on the detection result of the intrusion detector 3.

The intrusion detector 3 includes optical sensors 31a to 31d that are respectively installed in areas a, b, c, and d obtained by dividing the outer periphery of the building 1 into four parts, and optical sensors 31a to 31d that are installed outside of the optical sensors 31a to 31d, respectively. Vibration sensor 32a provided
- 32d, and AND circuits 33a to 33d that take AND conditions for each output of the optical sensors 31a, 32a to 31d, and 32d provided correspondingly to each of the above, and a condition change setting device that will be described later with the AND circuits 33a to 33d. OR circuit 3 that takes the logical sum condition of each output with 6
4a to 34d, RS flip-flops 36a to 36d, which receive the outputs of the OR circuits 34a to 34d as a set signal and the output of the reset button 35 as a reset signal, and the RS flip-flop 36.
Lamp 37 that lights up based on the output of a to 36d
a to 37d and a bell 38 that issues an alarm.

The traffic control door 4 is provided near the inside and outside of the entrance/exit 2, and includes an inner card reader 41 and an outer card reader 42 that read the card contents of the passerby, and a card memory 4 that stores the card contents of the passerby.
3, and a coincidence detection circuit 4 that compares the card data in the card memory 43 and the data read by each of the internal and external card readers 41 and 42 to detect a coincidence.
4, 45, and a one-shot multivibrator (hereinafter referred to as OM) _OM1 .
OR circuit 46 which takes the logical sum condition of OM ₂ and each output of OM ₁ and OM ₂ and outputs the door unlock signal S ₁ , and the above
Lamp 4 that lights up based on each output of OM ₁ and OM ₂
7, 48.

The unauthorized traffic detector 5 includes a door state detection circuit 51 that detects the open/closed state of the door body 21 provided at the entrance/exit 2, a door release signal _S2 of the door state detection circuit 51, and the door of the traffic control door 4. An AND circuit 52 takes an AND condition with the inverted signal of the unlock signal _S1 , the output of the AND circuit 52 is used as a set signal, and the output of the reset button 53 is used as a reset signal to generate an illegal traffic signal _S3.
RS flip-flop 54 that outputs RS flip-flop 54, a bell 55 that issues an alarm based on the output of RS flip-flop 54, and a display 56 that displays a predetermined display.

The condition change setting device 6 includes the optical sensors 31a to 31d of the intrusion detector 3 and the optical sensors 31a to 31d.
Vibration sensors 32a to 32d provided corresponding to
OR circuits 61a to 61d that output by taking a logical sum condition with the OR circuits 61a to 61d
It is constituted by AND circuits 62a to 62d that take a logical product condition between each output of and the illegal traffic signal _S3 of the illegal traffic detector 5.

The ITV confirmation device 7 includes optical sensors 31a to 31d and vibration sensors 32a to 32 of the intrusion detector 3.
ITV main bodies 71a~ provided corresponding to d.
71d, the outputs of the ITV main bodies 71a to 71d, and each RS flip-flop 36a to intrusion detector 3.
AND circuit 7 that takes an AND condition with the output of 36d
2a to 72d, an OR circuit 73 that takes a logical sum condition of each output of the AND circuits 72a to 72d, and a monitor TV 74 that transfers an image of the corresponding ITV main body based on the output of the OR circuit 73. Ru.

Next, the operation of this embodiment will be explained. First, when the illegal passage detector 5 does not send out the illegal passage signal _S3 (that is, when no illegal passage is detected at the entrance/exit 2), the passerby uses the outside card reader 42.
When the card data matches the card data in the card memory 43, the door unlock signal _S1 is sent to the door body 2.
1, and the unlocking operation of the lock mechanism unlocks the door body 21, allowing the passerby to pass through.

In addition, as in the above case, the illegal traffic detector 5
In the case where the illegal traffic signal _S3 is not sent, when an intrusion state of an outsider occurs in area a, the vibration sensor 32a and the optical sensor 31a
both output detection signals, and the RS flip-flop 36 is output via an AND circuit 33a and an OR circuit 34a.
Send a set signal to a. The RS flip-flop 3 enters the set state by receiving the set signal.
6a turns on the lamp 37a and rings the bell 3.
8 to sound an alarm to notify the manager of the occurrence of an intrusion in area a. Further, the manager can visually confirm the intrusion site and take predetermined measures by displaying the image signal sent out by the ITV 71a that monitors the area a on the monitor TV 74. In addition, after the prescribed measures have been taken against the intrusion, the administrator will press the reset button 35.
By pressing , the RS flip-flop 36a is reset and returned to its initial state.

Next, if the illegal passage signal _S3 is sent from the illegal passage detector 5, for example, a passerby who is going to go outside from the building 1 does not insert the card into the card reader 41, or does not insert the card into the card reader 41. However, since the match detection circuit 44 does not detect a match, the door unlock signal S ₁ is not sent out.
1 was forcibly opened or destroyed, the door state detection circuit 51 sent out a door open signal _S2 , and the illegal passage detector 5 sent an illegal passage signal _S3 . This is the case when it is sent. In this case, the illegal traffic detector 5 causes the bell 55 to sound an alarm, and the display 56
A sign will be displayed to the effect that illegal passing has occurred and the administrator will be notified. Furthermore, when the passerby who has illegally passed through the vehicle arrives at the installation point of the optical sensors 31a to 31d or the vibration sensors 32a to 32d,
When detected by any of the above sensors, a detection signal S ₄ a is sent from the condition change setting device 6 to the intrusion detector 3.
- S ₄ d will be sent out, and it can be determined whether the illegal passerby is in any of the areas, and the ITV confirmation device 7 can visually confirm the presence of the illegal passerby. For subsequent procedures, the same measures will be taken as if the illegal traffic signal S ₃ had not been sent.

In addition to the above embodiments, the present invention can be carried out in the following manner.

[1] The intrusion sensor can also be configured with other electric field type, microwave type, sensor using pattern recognition, etc.

[2] Other types of traffic control doors are swing type, rotating type,
It can also be configured with a control door that moves up and down or a type that performs ID discrimination between two doors. Furthermore, in addition to the manual door, an automatic door can also be used.

[3] The traffic control door must be constructed using a normally closed door that is not subject to traffic control (for example, a door that can be opened with a key only in an emergency, a door that can be opened and closed manually by a shutter or an electric lock from a remote location, etc.). In this case, it is not necessary to install an ID discriminator.

[4] Another set of fences may be installed in a wider peripheral area, and a dual intrusion sensor may be installed on this fence as well.

[5] When there are many doors, the configuration may be such that only intrusion sensors near the illegally opened door are used as the OR condition.

[6] It is also possible to use an intrusion detector formed by providing three or more intrusion sensors.

〔Effect of the invention〕

As explained above, the present invention normally determines the occurrence of an intrusion when multiple types of intrusion sensors constituting the intrusion detector operate simultaneously, as a detection condition for an intrusion detector that monitors unauthorized entrances and exits around the outer periphery of a specific area. ,
In addition, when the illegal passage detector detects illegal passage through the traffic control door installed at the entrance/exit of the specified area, it will be determined that an intrusion has occurred even if one of the multiple types of intrusion sensors is activated. Since the configuration changes the intrusion detection conditions, it is possible to prevent erroneous intrusion occurrences that would occur when a single intrusion sensor is activated due to the influence of weather etc. even outdoors, and it is possible to prevent intrusion from occurring outside a specific area. When an emergency situation occurs, such as illegal passage, the intrusion detection conditions of the intrusion detector are lowered, thereby making it possible to quickly and reliably detect illegal passage.

[Brief explanation of drawings]

Fig. 1 is an overall layout diagram of one embodiment of the present invention, Fig. 2
Figure A is a front view of the entrance/exit section in Figure 1, Figure 2B is a sectional view taken along line A-A in Figure 2A, Figure 3 is an overall block diagram of the embodiment in Figure 1, and Figure 4 is the traffic control door. and a block diagram of the intrusion detector, and FIG. 5 shows a circuit diagram of the intrusion detector. 1... Building, 2... Entrance/exit, 3... Intrusion detector, 4... Traffic control door, 5... Unauthorized traffic detector,
6... Condition change setting device, 7... ITV confirmation device.

Claims (1)

[Claims] 1 An intrusion detector consisting of a plurality of intrusion sensors arranged around the outer periphery of a specific area, and a traffic control door that controls traffic by determining whether or not a person is authorized to pass through the entrance/exit of the specific area. In preparation for this, there is an illegal traffic detector that detects illegal traffic from the above-mentioned traffic control door to outside the specified area, and based on the detection results of the illegal traffic detector, it is possible to detect intrusion into the area adjacent to the traffic control door where illegal traffic has occurred. A traffic control device comprising: a condition change setting device that changes detection conditions so that the occurrence of an intrusion can be detected using only a detector.