JPH10196221A - Opening-closing device of automatic door and unfair room-entrance preventive method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an unfair room-entrance by making it invalid when doors are closed on a detecting area of an inside detecting sensor isolated from the outside by the doors. SOLUTION: An inside detecting sensor 13 to detect a person who leaves a room, is provided on an indoor inside surface of an engine cover 15, and an opening-closing device 10 opens-closes doors 11a and 11b thereby according to a person who leaves a room. On the other hand, the opening-closing device 10 is provided with a room entrance permission judging means 20 to judge whether or not it is a registered person to control a person who enters a room, and this is arranged on the outdoor side. In the inside detecting sensor, an area is individually formed, and this area is composed of an existence detecting area running along the doors 11a and 11b and a proximity detecting area separate from the doors 11a and 11b. The existence detecting area is made invalid only when the doors 11a and 11b exist in a closed position on the basis of a signal from a fully closed position detecting switch 17. Therefore, an unfair room entrance caused by an originally unexpectable thing such as doing mischief to the inside detecting sensor existing on the inside, can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology related to an automatic door provided in a building, and particularly to a security technology for preventing unauthorized entry into a room. The present invention relates to an automatic door opening / closing technology having an entry management function that is controlled so that only a person who has received entry permission can enter an apartment.

[0002]

BACKGROUND OF THE INVENTION Generally, an automatic door is a door that separates an outside from an inside, and the door itself is automatically opened and closed by door opening and closing means. When controlling the opening and closing of such automatic doors, from outside (that is, outside) to inside (that is, inside)
The concept of opening and closing the door is different between when entering the room and when exiting from the inside to the outside. In other words, it is preferable that, for security purposes, strict entry control is applied to the entry, so that only specific people can enter the entry room.
It is preferable to be able to exit the room relatively freely without special management. Such automatic door opening / closing control is often applied to, for example, the entrance of an unmanned apartment. As a means of entry control or permission to enter the room, various methods for confirming whether the person entering the room is the person himself / herself, for example, a method of checking the belongings of the person, such as an entry card and a key, or using such belongings Instead of using it, it is also possible to apply a known method such as a method of directly verifying a fingerprint or a facial feature of a person or a method of verifying a personal identification number (in this regard, for example, Mitsuru Shiono,
Sanada Hidehiko: “Recent research trends in personal identification technology” IEICE IE92-49, 1992).

In an automatic door opening / closing system having such a room entry management function, a person entering a room must first receive a judgment of entry permission. Therefore, the system is provided with an entry permission determining means for determining whether or not the person entering the room is a permitted person, and the door is opened for the first time when an instruction to enter the room is issued by the entry permission determination means.
As a result, only the person who is permitted to enter the room is permitted to enter the room, and other outsiders are prohibited from entering the room.

On the other hand, it is necessary to smoothly exit the room without performing any special operation. Therefore, the automatic door opening / closing system includes an internal detection sensor that detects a person who leaves the room at a portion near the internal door. The person who exits can open the door only by passing through the detection area of the internal detection sensor, and can exit the room smoothly. The internal detection sensor usually forms a detection area along the door in order to reliably detect even a person approaching the door and to prevent the person from being caught or hit by the door. As for the detection area by the internal detection sensor, for example, as disclosed in Japanese Utility Model Publication No. 3-42230 or JP-A-8-136654, a presence detection area closer to the door and an approach detection area farther from the door are defined. There is also known a technology that allows the user to leave the room more smoothly. The proximity detection area away from the door is an area for detecting a person approaching to pass through the door and opening the door based on the detection signal, and the presence detection area near the other door is temporarily This is an area to prevent people from being pinched or collided with the open door, that is, an area that contributes to safety.

[0005]

In the door opening / closing system having such an entrance control function, an outsider who has not received entry permission inserts a long object or the like into the interior from the outside through a clearance around the door. It turned out that there is a possibility that the door may be opened by turning on the internal detection sensor and unauthorized entry into the interior may occur. Many common automatic door systems have a gap between the floor with a guide groove and the lower frame of the door,
In the case where the rubber packing is provided around the door, a clearance can be created by elastically deforming the rubber packing. In addition, in a special type of automatic door device having no guide groove on the floor, a clearance is inevitably generated between the lower frame of the door and the floor.

As a method of preventing unauthorized entry using such a clearance, it is conceivable to eliminate the clearance around the door or make it as small as possible so that an object cannot be inserted inside. However, this requires a more rigorous construction when installing the door, which raises the cost of the construction and makes the construction itself difficult.

[0007] As another prevention method, it is conceivable to select an internal sensor that is not easily tampered with by an unauthorized person. There are various types of sensors of this type, such as light reflection sensors, heat ray sensors, touch switches, proximity sensors, and mat switches. Among them, for example, if a touch switch provided on a door or another switch provided on an internal wall close to the door is used, since those switches are inside and it is difficult to operate from the outside, Unauthorized entry can be effectively prevented. However, that method goes against the design philosophy of leaving the room more smoothly. Also, for example, a mat switch or the like is difficult to be tampered with, but has drawbacks in durability or aesthetics. On the other hand, such sensors that are hard to be tampered are conversely considered to be highly accurate and reliable detection ( This is also a point of view that leads to the idea of a smooth exit.) It is not preferable. In practice, the most stable light reflection sensor having excellent detection function is often used, but the light reflection sensor itself is weak against mischief.

[0008]

Basic concept and means of the present invention In the present invention, based on the above-described examination results, it is difficult to predict from the outside of the door to the inside (that is, the inside detection sensor inside), which is originally difficult to predict. Aim to be an effective technology for preventing unauthorized entry due to this. In addition, the present invention seeks a technology that allows various persons such as men and women of all ages to exit smoothly, especially when passing through a door, particularly when exiting smoothly.

In the present invention, based on such a basic idea, a method is adopted in which the detection area of the internal sensor which is isolated from the outside by the door is invalidated when the door is closed. The invalidity here means
It means that the door is not opened even though there is an object to be detected in the internal area and the sensor is in a state of generating a detection signal. Specifically, for example, by extinguishing or cutting off the projection light of the light reflection sensor,
The detection function itself by the internal detection sensor is invalidated, or the function of giving a signal for opening the door to a door opening / closing means such as a so-called door engine in response to the detection signal being generated by the internal detection sensor is invalidated. Here, for example, an automatic door has a fixed portion adjacent to a door portion that automatically opens and closes, and usually, the door portion that opens and closes is located inside the fixed portion. An auxiliary sensor (mainly a photoelectric switch) for preventing the door from pinching a person and ensuring safety is disposed in the fixed portion protruding outside. Since these auxiliary sensors are outside the door, they are expected to be tampered with from the outside. On the other hand, it is very difficult for a person skilled in the art to predict that the detection area of the internal detection sensor inside the door is tampered with. The present invention is a novel prevention technique against misappropriation by mischieving the detection area of the internal detection sensor, which is unexpected.

[0010] The present invention addresses at least the mischief of a portion close to a door that may be mischievous. Therefore, as described above, when the detection area of the internal detection sensor is divided into the presence detection area closer to the door and the proximity detection area far from the door, the door closes the presence detection area closer to the door. When it is in the position, it may be invalidated. By doing so, it is possible to meet both the requirements of preventing mischief and smooth exit.

[0011]

FIG. 1 is a schematic diagram showing an automatic door opening / closing device 10 according to an embodiment of the present invention. The automatic door opening / closing device 10 includes a double sliding door type opening / closing door portion having left and right doors 11a and 11b that open and close and fixed portions (Fixes) 12a and 12b. An automatic door controller 14 and a door engine 5 serving as a drive source for opening and closing the doors 11a and 11b are provided in an engine cover 15 forming a blind eye.
0, an encoder 51 for detecting the position of the doors 11a and 11b from the fully closed state to the fully open state, and the doors 11a and 11b.
A fully closed detection switch 17 for detecting the fully closed position and an electromagnetic lock 19 for locking the doors 11a and 11b at the fully closed position are provided. At the tips of the left and right Fixes 12a, 12b,
An auxiliary sensor 16 including a light receiving device 6a and a light receiving device 16b is provided. The auxiliary sensor 16 is a sensor for detecting a person located on the trajectory of the doors 11a and 11b.

On the indoor side surface of the engine cover 15, an internal detection sensor 13 for detecting a person who leaves the room is provided, whereby the opening / closing device 10 opens and closes the doors 11a and 11b according to the person leaving the room. I do. On the other hand, in order to manage persons entering the room, the opening / closing device 10 is provided with the entry permission determining means 2.
0 is provided. The entry permission determining means 20 includes a numeric keypad 21, which is a collation device installed outside the room to determine whether or not the user is a registrant, an intercom master unit (indoor side) 22 that connects the inside and outside, and an intercom slave unit (room). (Outside) 23, and a controller 24 mainly composed of a CPU, which mediates between the numeric keypad 21, the intercom master unit 22, and the automatic door controller 14.

FIG. 2 is a control block diagram of the switching device 10, and FIG. 3 is a control flow thereof. The person who enters the room must first receive the permission to enter the room by the entry permission determining means 20. For example, the person entering the room contacts the person indoors by the intercom slave unit 23. The person on the indoor side determines whether or not to allow entry into the room via the intercom master unit 22, and outputs an entry permission signal to the controller 24 when the entry is permitted. Controller 2 that received the entry permission signal
4 outputs an unlock signal of the electromagnetic lock 9 and a door open signal of the door engine (door opening / closing means) 50 to the automatic door controller 14. In response to this, the doors 11a and 11b are opened and the fully opened state is maintained for a set time of an open timer (built-in to the automatic door controller 14) from the time when the doors 11a and 11b reach the fully opened position, so that a person can enter the room. When the set time of the open timer expires, the automatic door controller 14 sets the door 11a,
Start closing 11b. If the presence of a person or the like on the track is detected by the auxiliary sensor 16 while the doors 11a and 11b are closed, in order to prevent the person from being caught,
The automatic door controller 14 opens the doors 11a and 11b again.
The auxiliary sensor 16 is made effective only while the doors 11a and 11b are open under the control of the automatic door controller 14 based on the door position signal from the encoder 51. Thereafter, when the doors 11a and 11b are fully closed, the electromagnetic lock 9 is locked.

The internal detection sensor 13 in the automatic door opening / closing device 10 is a floor reflection type light reflection sensor. FIG. 4 is a schematic diagram for illustrating a detection area 30 of the internal detection sensor 13, and is a diagram in which a floor surface on which the detection area 30 is projected is viewed from above. The internal detection sensor 13 includes a total of eight sets of a pair of elements including a light emitting element and a light receiving element therein. Each of these sets individually forms areas 1-8. The areas 1 to 8 are arranged in two rows vertically and four rows horizontally, and the detection area 30 is formed as a whole. The detection area 30 includes the door 11a,
A presence detection area 32 is provided along the presence detection area 32 and an approach detection area 34 is located on the side farther from the doors 11a and 11b than the presence detection area 32 and is along the presence detection area 32. The presence detection area 32 is an area (areas 1 to 4) which is located in the vicinity of the doors 11a and 11b when the detection area 30 is divided into two in the vertical direction. The remaining areas (areas 5 to 8) are approach detection areas 34.

The presence detection area 32 is invalidated based on a signal from the fully closed position detection switch 17 only when the doors 11a and 11b are at the closed positions. While the other doors 11a and 11b are open, the presence detection area 32 is valid, and contributes to its inherent safety.
The switching of the presence detection area 32 between valid and invalid is performed by the controller 24 serving as a part of the entry permission determining means 20.
When an object is present in the presence detection area 32 with the doors 11a and 11b closed, the internal detection sensor 13 outputs a detection signal to the controller 24, but it is determined that the doors 11a and 11b are at the closed position. The controller 24 confirmed via the fully closed position detection switch 17 determines that the detection signal is invalid. By this control, the validity / invalidity of the presence detection area 32 can be switched more quickly. This point is indicated by the contents of the processing S24 in the controller 24 shown in FIG. 3, and the signal resulting from the processing S24 enters the automatic door controller 14, where the processing S14 is performed.
Is performed. The processing S24 in the controller 24 is
In addition to the determination as to whether or not to allow entry, the presence or absence of detection in each of areas 1 to 8 is included.
This includes determining whether 1a and 11b are fully closed. The process S14 in the automatic door controller 14 includes unlocking and locking of the electromagnetic lock 9, opening and closing of the doors 11a and 11b,
6 and the like.

On the other hand, the approach detection area 34 is always in a valid state, and outputs a detection signal to the controller 24 when a person who leaves the room is detected, and the controller 24 receiving this detection signal always sends the detection signal to the automatic door controller 14. Outputs a door open signal.

In the automatic door opening / closing device 10, a guide groove 41 is provided on the floor surface 40.
1 is fitted with an anti-vibration shaft provided below the doors 11a and 11b. Therefore, there is a gap between the lower portions of the doors 11a and 11b and the floor surface 40, except for the portion of the anti-shake shaft. Here, since the presence detection area 32 located in the vicinity of the clearance is invalidated when it is in the closed position, it is possible to prevent unauthorized entry of an outsider using the clearance below the doors 11a and 11b. However, at the same time, since the exiting person can be detected by the approach detection area 34, the exiting operation of the exiting person is not prevented.

FIG. 5 shows the configuration of another example of the detection area 130 formed by the internal detection sensor 13. In this detection area 130, the presence detection area 132
In order to prevent a person from being caught between the doors 11a and 11b, the width of the doors 11a and 11b is substantially the same as the opening width of the doors 11a and 11b. On the other hand, the approach detection area 134 is arranged around the inside of the presence detection area 132. That is, the approach detection area 134 has a U-shape that surrounds the presence detection area 132 from the side distant from the doors 11a and 11b and from both sides. Such an area configuration is effective in a situation where a person who leaves the room approaches the automatic door opening / closing device 10 from directions other than the front. With this U-shaped approach detection area 134,
It is possible to reliably detect not only persons approaching the doors 11a and 11b from the front, but also persons approaching from the side or oblique directions.

It should be noted that the validity / invalidity of the presence detection area 132 can be switched by the CPU in the controller 24 or by the CPU provided in the indoor side detection sensor 13 itself. FIG. 6 shows a control block diagram when such deformation is performed, and in particular, the indoor side detection sensor 13 ′
Includes a detection unit 232 and a detection condition determination / signal output unit (that is, CPU) 234. Such an indoor side detection sensor 13 ′ outputs a door open signal to the automatic door controller 14 based on a signal from the fully closed position detection switch 17. Further, since the encoder 51 detects the door position from the fully closed state to the fully open state, the fully closed position detecting switch 17 is used.
May be omitted, and the fully closed position may be detected using the door position signal from the encoder 51.

Further, in the illustrated embodiment, the door 11
The presence detection area 32 is switched between valid and invalid only based on a signal from the fully closed position detection switch 17 for detecting that the a and 11b are closed. Thus, the presence / absence detection area 32 can be switched between valid / invalid using the detection signal from the always valid approach detection area 134. By using such a combination of a plurality of signals (in addition to the signal from the fully closed position detection switch 17 and the signal from the signal generation source located outside the room), unauthorized entry due to tampering with the presence detection area 32 can be more reliably prevented. can do.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an automatic door opening / closing device 10 according to an embodiment of the present invention.

FIG. 2 is a control block diagram of the switchgear 10;

FIG. 3 is a control flow of the switchgear 10;

FIG. 4 is a detection area 30 formed by the internal detection sensor 13;
FIG. 3 is a schematic diagram showing an example.

FIG. 5 is a schematic diagram similar to FIG. 4, showing another area configuration of a detection area.

FIG. 6 is a control block diagram showing a modification of the opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automatic door opening / closing apparatus 11a, 11b Door 13 Internal detection sensor 20 Entry permission judgment means 30, 130 Detection area 32, 132 Presence detection area 34, 134 Approach detection area 50 Door engine (door opening / closing means)

Claims (6)

[Claims] 1. A door which separates the interior from the interior and which can be opened and closed by itself, a door opening / closing means for opening and closing the door, and when entering the interior from the outside through the door, a door other than a person entering the room is provided. Entry permission means for giving a signal to open the door to the door opening and closing means based on an entry permission signal,
An internal detection sensor which is located inside the vicinity of the door and detects a person going from the inside to the outside, and provides a signal to open the door to the door opening / closing means, and a detection function by the internal detection sensor, or An automatic door opening / closing device, wherein one of a function of giving a signal for opening the door to the door opening / closing means based on detection of a detection sensor is invalidated when the door is closed. 2. The opening / closing device according to claim 1, wherein the door is located closer to the inside than a fixed portion adjacent to the door, and further comprises an auxiliary sensor for detecting a person entering and leaving the door through the door at the fixed portion. apparatus. 3. An entry permission judging means for judging whether or not a person who enters the inside of the door from the outside is an entry permission person,
An internal detection sensor for detecting a person who exits from the inside of the door to the outside, wherein the door is provided when the entry permission determination means permits entry of a person or when the internal detection sensor detects a person. An automatic door opening / closing device having an entrance control function, wherein a detection area of the internal detection sensor is formed along the door, and a presence detection area for detecting a person near the door; An access detection area formed closer to the door than the area to detect a person approaching the door, wherein the presence detection area closer to the door is invalidated when the door is in the closed position. Automatic door opening and closing device. 4. The presence detection area has a width substantially the same as the opening width of the door, and has an inward spread, and the approach detection area is defined by the presence detection area. Arranged along the periphery of the inner side,
The switchgear according to claim 3. 5. When the automatic door is opened and closed, when entering the interior from the outside, the automatic door is opened on condition that there is an entry permission signal from a person other than the person entering the room. When going outside, in an automatic door opening / closing system that opens the automatic door if there is a signal for detecting a person who leaves the room, when the automatic door is closed, the door opening function for the exit is provided. A method for preventing unauthorized entry of an automatic door, wherein the method is invalidated to prevent unauthorized entry from outside without the entry permission signal. 6. An internal detection sensor for detecting a person going from the inside to the outside, near the automatic door.
6. The injustice according to claim 5, wherein either the detection function by the internal detection sensor or the control function of controlling the opening of the door in response to the detection signal of the internal detection sensor is invalidated when the door is closed. How to prevent entry.