JP2002349138A - Method for controlling automatic door for opening and closing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To monitor an area around a doorway in a more detailed manner without depending on auxiliary sensors. SOLUTION: A light sensor, having both a light-emitting part 10 with a plurality of light-emitting elements arranged in a predetermined configuration for applying illuminating beams to the monitored area of a floor face as a plurality of spot beams SP and a light-receiving part 20 having the same number of light-receiving elements as the light-emitting elements and capable of detecting the beams reflected from the monitored area in units of spot beams, is used as each of light sensors 4 and 5 installed on either sides of a door 1. The illuminating positions of the spot beams SP within the two door-vicinity monitoring lines LA1 and LB1 closest to the door 1 are set in different relative positions such that they are arranged alternately as seen from the direction of extension of a passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door opening / closing control method using a reflection type optical sensor. More specifically, an object on and around a door moving path can be reliably detected without using a light beam type auxiliary sensor. The present invention relates to an automatic door opening / closing control method capable of detecting an automatic door.

[0002]

2. Description of the Related Art In many cases, optical sensors for automatic doors include:
A reflection-type optical sensor having a light-emitting unit that emits light (infrared light) toward a floor near a door and a light-receiving unit that receives the reflected light is used. The light-receiving level (light-receiving amount) at the light-receiving unit is used. The detected object such as a person is detected by the change of the object. The light receiving level changes not only for humans and animals but also for moving objects. For example, the light receiving level changes depending on the movement of the automatic door itself.

Conventionally, as shown in FIG. 9, for example, assuming that the door 1 is of a sliding door type, optical sensors 2 and 2 are arranged on the indoor side and the outdoor side, respectively, so as not to pick up the movement. In addition, a predetermined number of auxiliary sensors 3 for irradiating a light beam as a safe light beam in the horizontal direction are provided between the monitoring areas, for example, in a cubic portion.

[0004]

As described above, since the conventional control device requires the auxiliary sensor 3 in addition to the optical sensor 2, the overall cost is high, and it has been desired to reduce the cost. Also, the auxiliary sensor 3 cannot be physically installed on the doorway, but is installed at a position off the doorway, that is, on the indoor side (or the outdoor side) of the cubicle. It is also dangerous.

[0005] In addition, in the conventional optical sensor 2, a split lens is used to obtain more spotlights with a smaller number of light-emitting elements, mainly from the viewpoint of cost.
FIG. 10 shows an example of the monitoring state using the spot light.
In this example, the floor surface is irradiated with eight spot lights SP per one monitoring row from the light emitting section of the optical sensor 2 by the split lens, and the reflected light is received by the light receiving section.

Here, the installation height H of the optical sensor 2 is 2000 mm from the floor, and the monitoring width W on the floor is 2000
mm, the spot light interval P is about 286 mm, assuming that the pitches between the spot lights SP are equal.
In addition, the installation height H of the optical sensor 2 is 3000 mm as it is.
Then, the spot light interval P is 286 × (3000/2)
000) = 429 mm.

The interval P is a dead zone width through which small animals such as small children and dogs and cats can pass. Therefore, when the door 1 is about to close, there is a risk that small animals such as small children and dogs and cats will approach the door 1 and be pinched.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an automatic door opening / closing control method capable of monitoring the vicinity of a doorway more finely without using an auxiliary sensor. Is to provide.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of manufacturing a vehicle, in which a floor near a door of a passage partitioned by a sliding door which is opened and closed by a driving means is used as a monitoring area. There are provided first and second two optical sensors arranged at upper positions on both sides, and control means for controlling the driving means based on an object detection signal of each of the optical sensors to open and close the door. In the automatic door opening / closing control method, each of the light sensors includes a plurality of light emitting units having a plurality of light emitting elements for irradiating irradiation light with a predetermined arrangement toward the monitoring area as a plurality of spot lights, A light-receiving element having a light-receiving element and capable of detecting reflected light from the monitoring area in units of the spot light, wherein each of the optical sensors is arranged in a row in parallel with the direction of movement of the door; Number of A monitoring row group including a plurality of monitoring rows including pot lights arranged in parallel at predetermined intervals in a direction away from the door, and at least two doors closest to at least the doors in each monitoring row group; The spot light irradiation positions are shifted relative to each other so that the spot lights in the monitoring row are alternately arranged when viewed from the extending direction of the passage.

According to the present invention, for example, when the spot light interval is 286 mm, as described in the above-described conventional apparatus, the spot light in the door close monitoring row on one of the passages is:
Since the spotlights in the door close monitoring row on the other passageway side are alternately arranged, the spotlight interval viewed from the extending direction of the passageway is 143 mm, which is a half, and the small child is not used by the auxiliary sensor. And small animals such as dogs and cats.

It is preferable that the two door closeness monitoring rows are arranged so as to be superimposed on the same position. According to the present invention, as a more preferable aspect, the two door closeness monitoring rows are moved by moving the doors. Can be overlapped on the route.

In the case where the two door close monitoring rows are overlapped at the same position, the movement of the door is picked up and the door cannot be closed. However, when closing the door, the door close monitoring row is closed. The problem can be solved by closing the door as it is, only when the time series of the object detection signal output from the light receiving element is in the direction in which the door is closed.

[0013]

Next, some embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an automatic door device to which the control method of the present invention is applied, and FIGS. 2 and 3 are schematic diagrams showing an internal structure of an optical sensor used in the automatic door device. Accordingly, a basic configuration common to the embodiments will be described.

In this embodiment, the automatic door device is a double-opening type having a pair of sliding doors 1 on the left and right sides, and a first optical sensor 4 and a second optical sensor 5 attached to both sides of the center of a blind 1A. And a control means (CPU) 6 for controlling a door driving means (not shown) based on the object detection signals output from the optical sensors 4 and 5.

In this embodiment, the door 1 is an entrance door, and the first optical sensor 4 is installed inside the room of the blind 1A.
Monitor by A5. The second optical sensor 5 is installed outside the door of the blind 1A, and monitors the floor FO near the door by the same five monitoring rows LB1 to LB5.

Each of the monitoring columns LA1 to LA5; LB1 to LB5
Are parallel to the moving direction of the door 1 and are arranged at predetermined intervals in a direction away from the door 1. In this embodiment, each of the monitoring rows LA1 to LA5; LB1 to LB5 has eight spot lights SP1 arranged in one row at equal intervals.
To SP8.

When the door 1 is installed in a building, the first optical sensor 4 is provided on one side of the passage partitioned by the door 1, and the second optical sensor 5 is provided on the other side of the passage. become. The door 1 may be of a one-sided type.

Each of the first optical sensor 4 and the second optical sensor 5 has a light emitting section 10 and a light receiving section 20 which are almost identical in element arrangement and are symmetrically arranged as a pair of right and left. FIG.
2A is a front view schematically showing the configuration of the light emitting unit 10 side, FIG. 2B is a side view thereof, and FIG.
FIG. 3B is a front view schematically showing the configuration of the side.
Is a side view thereof.

In the present invention, the lens system of the light emitting section 10 is not a split lens but a monocular lens 11, and the monocular lens 11 is provided with a light emitting element group 12 having a plurality of light emitting elements, for example, light emitting diodes. ing.

In this embodiment, as shown in the side view of FIG. 2B, the light emitting element group 12 has a five-row configuration of L1 to L5, and each row has a front view of FIG. As shown in the figure, eight light emitting elements 120 (121 to 12
8) is included. That is, one monocular lens 11
40 light emitting elements 120 are arranged in a matrix.

The light emitted from each light emitting element 120 passes through the center of the monocular lens 11 and is applied to the floors FI and FO in the form of spots as shown in FIG. The column numbers L1 to L5 of the light emitting element group 12 correspond to the monitoring columns LA1 to LA5; LB1 to LB5 set on the floors FI and FO, respectively, and the spot lights SP1 to SP8 included in the respective monitoring columns.
Corresponds to the eight light emitting elements 121 to 128.

That is, each of the monitoring columns LA1 to LA5; LB
1 to LB5, for example, the spot light SP1 is from the light emitting element 121, and the spot light SP2 is the light emitting element 1
22. Hereinafter, similarly, the spot light SP3
And light emitting element 123, spot light SP4 and light emitting element 12
4, spot light SP5, light emitting element 125, spot light S
P6 and light emitting element 126, spot light SP7 and light emitting element 1
27, the spot light SP8 and the light emitting element 128 correspond to each other.

Similarly to the light emitting unit 10, the light receiving unit 20 includes a single lens 21 as a lens system.
For one, a light receiving element group 22 having a plurality of light receiving elements composed of, for example, photodiodes is provided in the same arrangement as the light emitting element group 12.

That is, as shown in the side view of FIG. 3B, the light receiving element group 22 also has a five-row configuration of L1 to L5, and each row has eight columns as shown in FIG. One light emitting element 220 (221 to 228) is included. That is, 40 light receiving elements 220 are arranged in a matrix for one single-lens 21, and each light receiving element 2
20 detection signals are given to the CPU 6 which is an automatic door control means.

The light emitting section 10 and the light receiving section 20 are arranged symmetrically. Therefore, for example, the light receiving element 221 receives the reflected light of the spot light SP1 emitted from the light emitting element 121, and the light receiving element 222 is the light emitting element. The reflected light of the spot light SP2 emitted from the light receiving unit 122 is received.

Hereinafter, similarly, the light receiving element 223 is
23, the light receiving element 224 is a light emitting element 124, the light receiving element 225 is a light emitting element 125, the light receiving element 226 is a light emitting element 126, the light receiving element 227 is a light emitting element 127, and the light receiving element 228 is a light emitting element 128. The correspondence is made in a one-to-one relationship, and it is possible to detect an object in a unit of a spot light which is finer than a unit of a monitoring column.

To continue the description based on the above configuration, the present invention is directed to a monitoring row arranged closest to the door 1 among the monitoring rows LA1 to LA5 on the indoor side and the monitoring rows LB1 to LB5 on the outdoor side. (Door monitoring row) The arrangement of LA1 and LB1 is characteristic.

First, a first embodiment of the present invention will be described with reference to FIG. 1 described above, FIG. 4 which is a schematic side view thereof, and FIG. 5 which is a plan view thereof. According to this, the door closeness monitoring row LA1 on the indoor side and the door closeness monitoring row LB1 on the outdoor side are overlapped on the doorway of the door 1.

The superimposed monitoring sequence is referred to as a common monitoring sequence C
And In the present specification, the doorway means a moving path of the door 1, and is a concept including both a case where a rail is actually laid and a case where the door is suspended and does not require a rail.

Each of the latest monitoring rows LA1 and LB1 includes eight spot lights SP1 to SP8, respectively.
For convenience of explanation, here, each spot light on the indoor side is marked with a 、,
Each spot light on the outdoor side is indicated by a triangle.

In the common monitoring row C, 8 on the first optical sensor 4 side
This includes a total of 16 spot lights SP1 to SP8 and eight spot lights SP1 to SP8 on the second optical sensor 5 side, but the spot light “〇” on the first optical sensor 4 side. ”And the spot light“ △ ”on the second optical sensor 5 side.
Are relatively shifted by the distance DL, and the spot light “光” and the spot light “△” are alternately arranged.

The preferable shift amount is 1/2 pitch. According to this, the object detection interval (dead zone width) in the common monitoring row C is half of the object detection interval in the other monitoring rows LA2 to LA5; LB2 to LB5. In addition, the accuracy of detecting an object on the movement path of the door 1 can be improved, and small animals such as small children and dogs and cats can be reliably detected.

In order to alternately dispose the spot light “第” on the first light sensor 4 side and the spot light “△” on the second light sensor 5 side as described above, for example, the nearest monitoring row LA1 , LB1 and the light emitting element group 12 and the light receiving element group 22 may be shifted from the center of the lens, or may be tilted at a predetermined angle.

Further, in the first embodiment, the common monitoring line C is set right above the doorway, but a rail is laid on the doorway so that good reflected light cannot be obtained by the rail. In this case, for example, the entire monitoring column may be shifted to the left or right in FIG. 5 by one column, and the common monitoring column C may be set in the monitoring column LA2 or the monitoring column LB2.

In any case, by setting the common monitoring line C right above the doorway or on the side thereof,
The optical sensor 4 and / or the second optical sensor 5 also detect the movement of the door 1 itself in the same manner as other objects, and the door 1 is left open in this state, but in order to prevent this, as a control means, The CPU 6 is provided with the following control program.

It is assumed that the common monitoring queue C is set on the doorway. First, an object (for example, a person)
When the object approaches the door 1 and the object is detected in any of the monitoring rows, the CPU 6 controls a driving unit (not shown) based on the object detection signal to open the door 1.

When the object passes through the door 1 and goes out of the monitoring line and the object detection signal disappears, the CPU 6 sends a door closing signal to the driving means to close the door 1. This movement of the door 1 is detected by the common monitoring line C. In this case,
Because the door 1 is a double door, when it is closed,
Both the first and second optical sensors 4 and 5 are shielded from the outer spot light.

That is, referring to FIG.
SP1 → SP2 → S as spot is closed
The light is blocked in the order of P3 → SP4, and the spot light is SP8 → SP7 → SP6 → SP as the left door 1 is closed.
Blocked in order of 5.

Therefore, the CPU 6 performs the first and second
If the object detection signals output from the respective optical sensors 4 and 5 appear in the chronological order described above, it is determined that this is due to the movement of the door 1, and the door 1 is closed as it is. Otherwise, it is determined that there is something on the doorway, and the door 1 is kept open.

Next, as a second embodiment in which the common monitoring line C is set on the doorway or on its side as described above, as shown in FIG. 6, the monitoring lines LA1 to LA1 on the first optical sensor 4 side are used. LA5 as a whole and the monitoring line L on the second optical sensor 5 side
The entirety of B1 to LB5 may be shifted by a predetermined pitch.

As shown in FIG. 7, as a third embodiment, a door immediate monitoring row LA1 on the first optical sensor 4 side and a second
The door proximity monitoring row LB1 on the optical sensor 5 side may be shifted by a predetermined pitch without overlapping each other. In any case, the amount of shift is preferably a half pitch between the spot lights SP.

Further, the third embodiment is modified, as shown in FIG.
A1 and the position of the door closeness monitoring line LB1 on the side of the second optical sensor 5 are exchanged, and the door closeness monitoring line LA on the side of the first optical sensor 4 is replaced.
1 on the outside of the room, and a door immediate monitoring row LB on the side of the second optical sensor 5
1 can be arranged on the indoor side, and such an embodiment is also included in the present invention.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited to these embodiments. For example, the number of monitoring columns is not limited to five. Also, the number of light emitting elements,
The number of light receiving elements and the number of spot lights are not limited. In addition, the present invention is naturally applicable not only to automatic doors provided at doorways of buildings, but also to automatic doors in buildings.

[0044]

As described above, according to the present invention,
A light-emitting unit having a plurality of light-emitting elements for irradiating irradiation light as a plurality of spot lights in a predetermined arrangement toward a monitoring area on a floor surface to each light sensor installed on both sides of the door; An optical sensor having an element and a light-receiving unit capable of detecting reflected light from the monitoring area in spot light units, using each of the spot lights in the two door closest monitoring rows closest to the door. By displacing the spot light irradiation positions relatively so as to be arranged alternately when viewed from the extending direction of the passage, without using the auxiliary sensor,
The vicinity of the doorway can be monitored more finely.

[Brief description of the drawings]

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

FIGS. 2A and 2B are a front view and a side view schematically showing a light emitting portion of an optical sensor used in the present invention. FIGS.

FIG. 3 is a front view and a side view schematically showing a light receiving section of an optical sensor used in the present invention.

FIG. 4 is a side view schematically showing a setting state of the spot light according to the first embodiment.

FIG. 5 is a plan view schematically showing a setting state of a spot light according to the first embodiment.

FIG. 6 is a plan view schematically showing a setting state of a spot light according to a second embodiment of the present invention.

FIG. 7 is a plan view schematically showing a setting state of a spot light according to a third embodiment of the present invention.

FIG. 8 is a plan view schematically showing a setting state of a spot light according to a modification of the third embodiment.

FIG. 9 is a schematic side view showing an automatic door device as a conventional example.

FIG. 10 is a schematic plan view of the conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 door 1A blind 4 first optical sensor 5 second optical sensor 6 control means 10 light emitting section 12 light emitting element group 120 (121 to 128) light emitting element 20 light receiving section 22 light receiving element group 220 (221 to 228) light receiving element LA1 LA5; LB1 to LB5 Monitoring row C Common monitoring row SP1 to SP8 Spot light FI, FO Floor surface

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Masahiro Omitsu 1-23-19 Asahicho, Machida-shi, Tokyo Honda Electronics Co., Ltd. No. 23-19, F-term (Reference) 2E052 AA02 BA06 EA15 EB01 EC02 GA06 GB01 GC02 GD01 GD05 KA12 KA22 5J084 AA01 AB07 AD03 BA05 BA38 BB02

Claims (4)

[Claims] 1. A first partition and a second partition disposed at upper positions on both sides of a passage defined by a floor surface near a door of a passage partitioned by a sliding door that is opened and closed by a driving means. An automatic door opening / closing control method comprising an optical sensor and control means for controlling the driving means based on an object detection signal of each of the optical sensors to open and close the door. A light emitting unit having a plurality of light emitting elements for irradiating a predetermined arrangement as a plurality of spot lights toward the monitoring area, and having the same number of light receiving elements as the light emitting elements, and reflecting the reflected light from the monitoring area to the spot. A light receiving unit capable of detecting light in units of light, wherein each of the optical sensors separates a plurality of monitoring rows including a predetermined number of spot lights arranged in one row in parallel with the moving direction of the door from the door. , A plurality of monitoring rows arranged in parallel at predetermined intervals, and each spotlight in at least two door monitoring rows closest to the doors in each of the monitoring row groups extends through the passage. An automatic door opening / closing control method, wherein the spot light irradiation positions are relatively shifted so as to be arranged alternately as viewed from the direction. 2. The automatic door opening / closing control method according to claim 1, wherein the two door immediate monitoring rows are arranged so as to be overlapped at the same position. 3. The automatic door opening / closing control method according to claim 1, wherein the two door close monitoring rows are superimposed on a moving path of the door. 4. The control means according to claim 1, wherein when closing the door, the time series of the object detection signal output from the light receiving element which is in charge of the door immediate monitoring row is along the direction in which the door is closed. 4. The method for controlling opening and closing of an automatic door according to claim 1, wherein the door is closed as it is.