JP2003336447A - Automatic door device and its touch sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce costs without reducing the safety of passage. <P>SOLUTION: A door 4 opens and closes an opening 2 through which passengers pass. A display board 28a is provided on the door face 4a of the door 4 and in a position where passengers can touch it. A sensor 14a for installation on the outer surface of a transom 8 above the opening 2 sets a first detection range 24d on the door face 4a, including the display board 28a, and sets detection ranges 30a-30o on a floor face near the opening 2. The sensor 14a enables the detection range 24d when the door 4 is located in a closing position where it closes the opening 2, and when the door 4 is located in positions other than the closing position, it enables the detection ranges 30a-30o. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door device and a sensor used therein.

[0002]

2. Description of the Related Art An automatic door device, for example, a slide type automatic door device, is provided with a touch sensor as an activation sensor on the door, and an opening is opened by the door when a passerby comes into contact with the touch sensor. . With this method,
The principle is to close the opening with a door when a predetermined time has passed since there were no passers-by. However, if a passerby remains standing in the opening when the door is about to close, there is a risk that the door trying to close and the standing passer may collide. Therefore, a support sensor that detects that a passerby is standing within the width of the opening is provided. After the opening is opened, if the support sensor detects a pedestrian, the door remains open.

In this system, when a passerby tries to pass through the opening while the door is closing, the closing door is opened unless the passer touches the touch switch moving together with the door. Absent. Since this is not sufficiently recognized by ordinary passers-by, there is a possibility that the closing door comes into contact with the passers-by.

Therefore, recently, another sensor is installed as a safety sensor above the opening, and when this safety sensor detects a passerby approaching the door, the door is opened and closed. There has been proposed an automatic door that improves safety by preventing contact with passersby.

[0005]

However, in the above automatic door device, another safety sensor must be installed in addition to the touch switch. There is a problem in that cost is increased because a total of three sensors, that is, a support sensor and a safety sensor that is installed blindly are required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic door device which has a reduced cost without reducing the safety of traffic and a touch sensor which prevents a malfunction by reducing the cost used in such an automatic door device. And

[0007]

An automatic door device according to the present invention has a door that opens and closes an opening through which a passerby passes. The door may be a slide type or a swing type. A contact body is provided at a position on the door surface of the door where the passerby can contact. The contact body may have various shapes as long as it can be contacted by a passerby, and may be, for example, a display plate or a seal. An optical sensor is installed above the opening. This sensor sets a first detection range from the door surface including the contact body and a second detection range from the floor surface near the opening, for example, the floor near the opening. The sensor includes, for example, a light projecting unit and a light receiving unit. In addition,
The sensor may be provided with only light receiving means for infrared rays or the like emitted from an object, instead of the light projecting means and the light receiving means. The sensor validates the first detection range when the door is located in the closed position where the door closes the opening, and validates the second detection range when the door is located in a position other than the closed position. It is configured.

In the automatic door device constructed as described above,
The first detection range is effective when the door is in the closed position. When a passerby comes into contact with the contact body in this state, the contact is detected by the sensor. The second detection range is effective when the door is located at a position other than the closed position. Therefore, for example, when a door is moving from the closed position to the open position, or when the door is moving from the open position to the closed position, if a passerby exists in the second detection range, the passage of the passerby is detected. The person is detected by the sensor. Although only one sensor is used as described above, it can be used as a touch sensor for activation by using the first detection range and as a safety sensor by using the second detection range. Therefore, the cost of the automatic door device can be reduced. Moreover, the first detection range is formed on the door surface. The light reflection state of the door surface does not change to the level of the floor surface even if the weather conditions change. Therefore, even if there is a change in weather conditions, the sensor does not malfunction and it is possible to prevent the door from malfunctioning.

The sensor can validate the first detection range when the second detection range detects a pedestrian in the state where the door is in the closed position. For example, second
When the first detection range is enabled in a state where the detection range of 1 does not detect a passerby, a flying object, for example, that has been blown by the wind even if the passerby is not yet near the door. There is a possibility that the sensor may erroneously detect newspaper, etc., and the door may be opened and closed unnecessarily. Alternatively, when the door is a transparent glass door, light may be incident on the first detection range from the door surface side opposite to the door surface on which the first detection range is formed. The sensor may malfunction. However, when a passerby is detected in the second detection range,
If the detection range of is enabled, the sensor will not accidentally detect flying objects, and even if the door is transparent glass, the sensor will not malfunction due to light transmitted through the transparent door, Unnecessary opening and closing can be prevented.

Alternatively, the sensor may set a plurality of second detection ranges. In this case, in the state where the door is located at a position other than the closed position, the plurality of second detection ranges near the opening are set along the depth direction away from the door surface of the door or the width direction of the opening.

According to this structure, since the plurality of second detection ranges are used for detection, the range that can be detected is widened. For example, even if a passerby stops near the opening, the passerby is surely detected. Therefore, it is possible to prevent an accident in which the passerby comes into contact with the door that is about to be closed without being able to detect the passerby, and it is possible to ensure the safety of the passerby.

Alternatively, the sensor may be provided with a plurality of first detection ranges along the opening / closing direction of the door. In this case, it is desirable to enable the first detection range not only when the door is at the closed position but also when the door is located at a position other than the closed position. With such a configuration, a plurality of first detection ranges existing along the opening / closing direction of the door can reliably detect a passerby standing in the vicinity of the door or in the door opening. It is not necessary to separately provide a sensor for detecting a pedestrian standing still in the opening, and the cost can be further reduced.

Alternatively, the sensor may be an optical reflection sensor in which a plurality of light projecting means for emitting light rays and a plurality of light receiving means for receiving reflected light rays of these light rays are respectively arranged in an arch shape. . In this case, the first detection range is set by the light projecting and receiving means in the vicinity of the center, which is arranged substantially perpendicular to the floor surface, among the plurality of light projecting and receiving means. With this configuration, the first detection range is
When viewed toward the door surface, it is arranged almost vertically to the floor surface, so the contact body can also be arranged almost vertically to the floor surface, and the installation position of the contact body with respect to the door surface can be easily adjusted. .

Alternatively, the sensor may be an optical reflection sensor in which the light emitting and receiving means are arranged in an arch shape as in the above, and in this case, the first detection range is one of the plurality of light emitting and receiving means. It is set by the light emitting and receiving means near one end of the arch arranged obliquely with respect to the floor. With this configuration, the sensor can be arranged near the center of the door opening, which is advantageous in designing the automatic door device.

The touch sensor according to the present invention has first and second optical detecting means. As the optical detecting means, one provided with a light projecting means and a light receiving means can be used. The first optical detection means includes a first detection range from a door surface including a contact body provided so that a passerby can contact the door surface of the door that opens and closes the opening to the first optical detection means. Is arranged to detect the presence or absence of an object. The second optical detecting means is arranged from the floor near the opening to the second optical detecting means.
It is arranged to detect the presence or absence of an object in the second detection range up to the optical detection means. In a state where the door is located at the closed position where the opening is closed, when the second optical detection means detects a passerby, the first optical detection means is enabled and the door is at a position other than the closed position. In the state of being located at, the control means for activating only the second optical detection means is provided.

In the touch sensor thus constructed,
Since the first optical detecting means is enabled while the passerby is detected in the second detection range by the second optical detecting means, the passerby came in when the passerby was not approaching the door. The first optical detection unit does not detect the flying object by mistake, and the first optical detection unit does not malfunction due to the light transmitted through the transparent door even if the door is transparent glass. It is possible to prevent unnecessary opening and closing of the door. Moreover, the first detection range is from the door surface to the first
Since it is formed up to the optical detection means, it is possible to prevent the first optical detection means from malfunctioning due to changes in weather conditions. The modifications described for the automatic door device are also possible for this touch sensor.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The automatic door device according to the first embodiment of the present invention has a door opening 2 as shown in FIGS. 3 (a) and 3 (b). The door opening 2 is formed in a vertically long rectangle, and a vertically long rectangular door 4 that opens and closes the door opening 2 slides. As shown in FIG. 3A, when the door 4 completely closes the opening 2, that is, when the door 4 is in the closed position, the door 4 overlaps the opening 2. As shown in FIG. 2B, when the door 4 completely opens the opening 2, that is, the door 4
The door 4 overlaps the fixed wall 6 when is in the open position. That is, this automatic door device is a pulling slide door.

As shown in FIG. 1 and FIG. 2, a blind 8 is provided above the opening 2 and the fixed wall 6. As shown in FIG. 2, driving means for sliding the door 4, for example, a door engine 10 and a transmission mechanism (not shown) are provided in the seamless space 8. A control means, for example a door controller 12, is also provided in the blind 8 for controlling the door engine 10 and sliding the door 4.

Sensors 14a and 14b are used to control the opening and closing of the door 4 by the door controller 12 as shown in FIGS.
As shown in FIG. That is, the sensors 14a and 14b are provided above the door opening 2. Moreover, as shown in FIG. 2, both sensors 14a and 14b are provided at positions close to the edge of the opening 2 on the side opposite to the fixed wall 6. Both sensors 14a, 14b
Have the same configuration, only the sensor 14a will be described.

The sensor 14a comprises a light projecting means, for example a light projector, and a light receiving means, for example a light receiver. The projectors are arranged in a plurality of rows, for example, two rows. One of the rows is a plurality of, for example, seven projectors 1 as shown in FIG.
It consists of 6a to 16g. These projectors 16a to 16
g is composed of, for example, an infrared light emitting diode. The light projectors 16a to 16g are arranged such that the optical axes of the light projectors 16a to 16g are directed toward the lower side of the door surface 4a so as to project light toward the one door surface 4a of the door 4. The light projectors 16a to 16g are arranged in an arch shape that is convex upward and is located at the center of the light projector 16c. The arch is arranged so that the optical axes of the respective projectors 16a to 16g intersect at one point, for example, the center of the diffusing lens 18. The center of this arch is located on the same straight line as the center of the diffusing lens 18. Each floodlight 1
6a to 16g project infrared rays with a width widened to some extent on both sides of these optical axes.

The light receivers are also arranged in a plurality of rows, for example, two rows. One of them, as shown in FIG. 4, is composed of a plurality of, for example, seven light receivers 20a to 20g. These light receivers 20a to 20g are composed of, for example, infrared photodiodes. These light receivers 20a to 2
0 g is arranged in a convex arch shape upward so as to receive the reflected light beam from the door surface 4 a, similarly to the projectors 16 a to 16 g. Their optical axes are directed to the door surface 4 side.

The sensor 14a is a reflection type optical sensor including the light projector and the light receiver. The light receiver receives the reflected light projected from the light projector and reflected by some object.

The light receiver 20a is arranged so as to receive the light beam projected from the light projector 16a and reflected by the door surface 4a via a converging means, for example, a condenser lens 22.
The light receiver 20b is projected from the light projector 16b, and the door surface 4
It is arranged so that the light beam reflected by a is received via the condenser lens 22. Hereinafter, similarly, the remaining light receiver 2
0c to 20g are also arranged so as to receive the corresponding light rays projected from the light projectors 16c to 16g and reflected by the door surface 4a via the condenser lens 22.

The light projecting device 16c projects the light onto the detection range 24c shown in FIG.
c receives the reflected light from this detection range 24c. That is, the object existing within the detection range 24c is detected.
Similarly, the light projector 16d and the light receiver 20d form a detection range 24d for object detection, the light projector 16e and the light receiver 20e form a detection range 24e for object detection, and the light projector 16f and the light receiver 20f perform object detection. The detection range 24f is formed, and the projector 16g and the light receiver 2 are formed.
A detection range 24g for object detection is formed by 0g.

Each of these detection ranges 24c to 24g has a reflecting surface on the door surface 4a. When the sensor 14a does not detect an object or the like, these reflecting surfaces are
It is a surface that reflects the light rays projected from the projector. In particular,
As shown in FIG. 1, the detection range 24d is from the lower end of the door surface 4a to the door surface 4a when the door 4 is in the closed position.
Has a reflecting surface 241d up to the middle of
A detection range 24 is formed between 41d and the sensor 14a. Other detection ranges 24c, 24e to 24g
Also has a reflecting surface on the door surface 4a. Between the reflection surface and the sensor 14a, the detection ranges 24c, 24e to 24 through which the projected light and the reflected light from the arrow pass.
g is formed.

As is apparent from FIG. 3A, the detection range 2
In 4c and 24g, a part of the reflecting surface is off the door surface 4a. These detection ranges 24c to 24g are arranged in the opening 2 along the opening / closing direction of the door 4. In addition,
As shown in FIG. 3B, when the door 4 is opened,
The light rays from the light projectors 16c to 16g are projected to the floor surface, are reflected here, and are received by the corresponding light receivers 20c to 20g.
Is received by.

As described above, the light projectors 16c to 16g and the light receivers 20c to 20g constitute the first optical detecting means.

Similarly, detection ranges 26a to 26e corresponding to the detection ranges 24c to 24g are formed on the opposite side of the door 4 by the sensor 14b. In this case, the sensor 1
4b projectors 16a to 16e and light receivers 20a to 2
0e is used, the projectors 16f and 16g, and the light receiver 20
f and 20g are not used. When the door 4 is opened, the detection ranges 24c to 24g and the detection ranges 26a to 26e corresponding to the detection ranges 24c to 24g partially overlap each other, as shown in FIG. 3B.

As shown in FIG. 1, a contact body, for example, a display plate 28a is attached to the reflecting surface 241d on the door surface 4a. The display plate 28a may be, for example, a sticker-like one that urges a passerby to approach the hand, or may be one having a shape similar to a cover provided on a normal touch switch. it can. The display plate 28a is attached at a height position where a normal touch sensor is attached. The display plate 28b is also provided in the detection range 261d on the surface 4b on the opposite side of the door 4.

The display plates 28a and 28b are provided with the reflecting surface 2
It is attached to 41d and 261d. Since the reflecting surfaces 241d and 261d are formed on the door surfaces 4a and 4b in a substantially straight line in the vertical direction, the reflecting surfaces 2
By mounting the display plates 28a and 28b over the 41d and 261d, the mounting position can be adjusted relatively easily.

The sensor 14a has another row of light projectors in addition to the above-mentioned light projectors 16a to 16g. A plurality of these projectors, for example, seven projectors are also provided, and the projector 16
They are arranged in an arch shape similar to a to 16g. Further, in addition to the light receivers 20a to 20g, another line of light receivers is provided. These light receivers are also provided in a plurality, for example, seven, and are arranged in an arch shape similar to the light receivers 20a to 20g.

The other line of the projector and the receiver constitutes the second optical detecting means and form a plurality of, for example, 15 detection ranges 30a to 30o for detecting the object. These detection ranges 30a to 30o extend toward the floor as shown in FIGS. 1 and 3A and 3B, and are arranged 5 * 3 in the width direction and the depth direction of the opening 2. There is. In order to form these detection ranges 30a to 30o, although not shown in the drawing, the light beams emitted from five light projectors out of a total of seven light projectors in another row are projected by the light dispersion means in the depth direction of the opening 2. Corresponding to three light beams, which are dispersed into three light beams along a line, and corresponding to five light receivers out of the other seven light receivers in one row, after being converged by the converging means. Since a large number of detection ranges are formed in the width direction and the depth direction of the opening 2 in this way, a passerby standing in the vicinity of the door 4 can be reliably detected.

Although not shown, the sensor 14a controls the operations of the light emitter and the light receiver in addition to these two rows of the light emitter and the light receiver, and appropriately processes a light reception signal from each light receiver. It also has control means for supplying to the door controller 10, such as a CPU and a memory.

In the sensor 14b as well, a plurality of detection ranges are similarly formed by the second optical detecting means, but as is apparent from FIGS. 3 (a) and 3 (b), a total of 10 (2 * 5). Detection ranges 32a to 32j are formed.

In the automatic door device constructed as described above,
In the state in which the door 4 is closed, as shown in FIG.
6d is valid. That is, the detection ranges 24d, 26
The object can be detected by b. All the other detection ranges are invalid, and the object cannot be detected. As an effective method, a predetermined light projector, for example, the light projectors 16d, 20
In the case of projecting light only to d, or when all the projectors project light, detection processing is performed to determine whether or not the object is detected only for the light reception signals of a predetermined light receiver, for example, the light receivers 18d and 22d, and other There is a method of not performing detection processing on the light reception signal of the light receiver. The fact that the door 4 is closed means that the door 4
This can be confirmed by the use of an encoder that generates a pulse signal with the movement of the
It can also be confirmed by detecting the door 4 in all of the detection ranges 26a to 26e and the detection ranges 26a to 26e.

In this state, when a passerby advances toward the door 4 and contacts the display plate 28a or 28b,
This contact is detected in the detection range 24d or 24d. The door 4 is opened by this detection.

When the door 4 starts moving from the closed position, the detection ranges 30a to 30o, 3
2a to 32o are valid. This makes the door 4
It is detected that there is a passerby in the vicinity of. When a predetermined time has elapsed from the state where the door 4 is completely opened, the door 4 usually starts to close again, but even if the predetermined time has elapsed, a passerby is detected in any of the detection ranges 30a to 30o and 32a to 32o. If still detected, the door 4 will remain in the open position and will not close. Therefore, the passerby does not come into contact with the door 4, and the safety of the passerby can be secured. As described above, although it is one sensor, it can be shared for activation and safety.

If the detection ranges 24c to 24g and 26a to 26e are effective while the door 4 is open, the passersby who are standing on the opening 2 are detected by the detection ranges 24c to 24g and 26a to 26e. Can be detected. Therefore, FIGS. 3 (a) and 3 (b)
It is possible to eliminate the support sensor for the opening 2, which is provided as shown by the dotted line in FIG. Thus, the functions of three sensors can be performed by one sensor.

In the state where the door 4 is closed and the passerby is detected in the detection range 30a to 30o or 32a to 32o, the detection range 24d,
26d can also be enabled. This way,
For example, even if flying objects such as newspapers fly into the detection ranges 24d and 26d along the moving direction of the door 4, it is possible to prevent the flying objects from being erroneously detected.

As described above, this automatic door device can function as if a plurality of sensors were provided even though it was a single sensor. Moreover, the sensor 14a is
In order to form the detection ranges 24c to 24g and 26a to 26e, the light rays from the light projectors 16c to 16g are projected toward the door surface 4a, and the light receivers 20c to 20g receive the reflected light rays from the door surface 4a. The optical axis is the door surface 4
directed to a. For example, the detection ranges 24c to 24
g, 26a to 26e are formed between the floor surface and the sensor 14a, that is, the reflecting surface 241d and the reflecting surface 2
When the reflection surface corresponding to 61d is formed on the floor surface, the situation of reflection of the light beam is different depending on whether the floor surface is wet due to rain or the like and the floor surface is dry. Regardless, there is a possibility of false detection that there is a passerby.
Alternatively, even in the case of fine weather or rainy weather, the reflection state of the light beam is different, and there is a possibility of erroneous detection. On the other hand, when the reflecting surface 241d or 261d is formed on the door surface 4a,
The door surface 4 does not significantly change the state of reflection due to changes in weather, etc., and therefore the possibility of false detection is reduced.

FIG. 5 shows an automatic door device according to the second embodiment. This automatic door device is different from the automatic door device of the first embodiment in the installation position of the sensors 14a and 14b. That is, the sensors 14a and 14b are provided at positions slightly closer to the center side of the blind 8 as shown in FIG. Therefore, the area where the display plates 28a and 28b are provided is changed to the area 24b. In this way, the sensor 14a,
Since the mounting position of 14b is changed, the appearance of the automatic door device is improved, which is advantageous in terms of design. Other configurations are the same as those of the automatic door device according to the first embodiment, and detailed description thereof will be omitted.

FIG. 6 shows an automatic door device according to the third embodiment. This automatic door device is a double sliding door device and is provided with two doors 104a and 104b. The sensor 14a is provided on the outer surface side of the seamless member 8 so as to be located substantially on the mating surface of the doors 104a and 104b. There are seven detection ranges 24a to 24g formed by the sensor 14a toward the door surface side. Therefore, all the projectors 1 existing in the same row
6a to 16g and light receivers 20a to 20g are used. Corresponding to the detection range 24c, 24e, the door 104
Display plates 128a and 128b are provided on the door surfaces of a and 104b. Other configurations are the same as those of the automatic door device according to the first embodiment, and detailed description thereof will be omitted.

In each of the above embodiments, the reflective type sensor is used, but a pyroelectric sensor can also be used. Further, in each of the above embodiments, the sensor is provided on both sides of the door, but it may be provided only on one side of the door.

[0044]

As described above, according to the present invention, even though only one sensor is used, it can be used as both a starting sensor and a safety sensor. The cost of the door device can be reduced. Moreover, since the sensor forms a detection range not with the floor surface but with the door surface, erroneous detection can be greatly reduced even if there is a change in weather conditions.

[Brief description of drawings]

FIG. 1 is a side view of an automatic door device according to a first embodiment of the present invention.

FIG. 2 is a front view of the automatic door device shown in FIG.

3A and 3B are plan views of the automatic door apparatus of FIG. 1 in a closed state and an opened state.

FIG. 4 is a diagram showing an arrangement of a light projector and a light receiver used in the automatic door apparatus of FIG.

FIG. 5 is a front view of the automatic door device according to the second embodiment of the present invention.

FIG. 6 is a front view of an automatic door device according to a third embodiment of the present invention.

[Explanation of symbols]

2 openings 4 doors 14a 14b sensor 241d First detection range

Continued front page    F-term (reference) 2E052 AA01 AA02 BA02 BA04 EA16                       EB01 GA05 GA06 GA10 GB01                       GB06 GB13 GC01 GD02 GD03                       KA13

Claims (7)

[Claims] 1. A door that opens and closes an opening through which a passerby passes, a contact body provided at a position on the door surface of the door where the passerby can contact, and the contact body installed above the opening. An optical sensor that sets a first detection range from above the door surface and a second detection range in the vicinity of the opening, wherein the sensor detects that the door closes the opening. An automatic door device that validates a first detection range when the door is in a closed position, and validates a second detection range when the door is in a position other than the closed position. 2. The automatic door device according to claim 1,
The said sensor is an automatic door apparatus which validates a 1st detection range, when a 2nd detection range is detecting the passerby in the state in which the said door is located in the said closed position. 3. The automatic door device according to claim 1,
The sensor sets a plurality of second detection ranges, and in a state where the door is located at a position other than the closed position, the plurality of second detection ranges near the opening are set to the door surface of the door. An automatic door device that is set in a depth direction that is farther away than the opening, or in a width direction of the opening. 4. The automatic door device according to claim 1,
An automatic door device in which a plurality of first detection ranges are provided along the opening / closing direction of the door. 5. The automatic door device according to claim 1,
The sensor is an optical reflection sensor in which a plurality of light projecting means for emitting light rays and a plurality of light receiving means for receiving reflected light rays of these light rays are respectively arranged in an arch shape, and the first detection range is , An automatic door device which is set by the light emitting and receiving means near the center of the plurality of light emitting and receiving means which is arranged substantially perpendicular to the floor surface. 6. The automatic door device according to claim 1, wherein
The sensor is an optical reflection sensor in which a plurality of light projecting means for emitting light rays and a plurality of light receiving means for receiving reflected light rays of these light rays are respectively arranged in an arch shape, and the first detection range is An automatic door device set by the light projecting / receiving means near one end of the arch, which is obliquely arranged with respect to the floor, of the plurality of light projecting / receiving means. 7. A first and second optical detection means are provided, and the first optical detection means includes a contact body provided so that a passerby can contact the door surface of the door that opens and closes the opening. The second optical detection unit is arranged so as to detect the presence or absence of an object in a first detection range from the door surface to the first optical detection unit, and the second optical detection unit is arranged from the floor surface near the opening to the second optical detection unit.
Is arranged so as to detect the presence or absence of an object in a second detection range up to the optical detection means, and in a state in which the door is in the closed position closing the opening, the second optical detection means is When detecting a passerby, the control means that enables the first optical detection means, and enables only the second optical detection means when the door is located at a position other than the closed position. Touch sensor provided.