JP4265943B2 - Automatic door device and automatic door sensor - Google Patents

Description

  The present invention relates to an automatic door device and a sensor used in the device, and more particularly to an automatic door device using a door in which a part of the door protrudes and moves from a door opening, such as a folding door or a glide door, and the device. Related to the sensor.

  In automatic door devices that use folding doors and glide doors, when a passerby approaches the door with the door closed, the presence or absence of a passerby approaching the door to open and close the door An activation sensor is provided for detecting. In addition, there is another passerby in the vicinity of the door when opening and closing the door, and this other passerby is prevented in order to prevent this passerby from touching the door or being caught in the door. A safety sensor for detecting the presence or absence of a person has been provided. An example of such an automatic door device is disclosed in Patent Document 1.

  In the technique disclosed in Patent Document 1, a safety area is set 2 toward the air on the doors of two folding doors and glide doors that are folded or glide toward both ends of the door opening. A safety sensor for the table is provided. In addition, an activation area is formed so that the activation sensor provided on the ceiling does not overlap the safety area.

Japanese Patent Laid-Open No. 9-242421

  However, in the above technique, a total of three sensors including two safety sensors and one activation sensor are required, resulting in an increase in cost. Further, since the safety area is moved by the safety sensor as the door is opened and closed, for example, a passerby located near both ends of the door opening may not be detected, and safety cannot be sufficiently ensured. .

  An object of this invention is to provide the automatic door apparatus which improved the safety | security of a passer-by, reducing the number of sensors to be used, and the sensor used for the automatic door apparatus.

The automatic door device according to the present invention has a door. This door is provided, for example, in a door opening formed on a wall of a building or the like, and is folded to one opening surface side of the door opening or glide-moved to open and close the door opening. As this door, a so-called folding door or a glide door can be used. This door can be either a double-folded type or a one-folded type door. One optical sensor forms a plurality of detection ranges from above one surface of the door opening toward the floor surface. The installation position of this sensor is, for example, the eyes or the ceiling. This sensor has a light receiving means corresponding to each detection range. When an object exists in any of the detection ranges, the corresponding light receiving means changes the light reception signal. These detection ranges can be formed only by the light receiving means, or can be formed by the light receiving means and the light projecting means. Further, each detection range and the light receiving unit do not have to correspond one-to-one, and one light receiving unit can correspond to a plurality of detection ranges. However, it is desirable that one light receiving unit corresponds to a plurality of detection ranges set as safety areas described later or a plurality of detection ranges set as activation areas described later. Further, a plurality of detection ranges are arranged in one row from one end side of the door opening toward the other end side, and this row is arranged in a plurality of rows from a position close to one opening surface of the door to a position away from it. It is desirable to form. It is desirable that the safety area for detecting the presence or absence of a passerby near the door opening is set within a detection range in a row closest to the one opening surface of the door. Based on the output of the sensor, the door opening / closing control means controls the opening / closing of the door. The sensor includes an area setting unit, and the area setting unit sets a detection range in which a light reception signal of a corresponding light receiving unit changes as the door is opened / closed as a safety area among a plurality of detection ranges. The other detection range is set as an activation area for detecting the presence or absence of a passerby approaching the closed door. The sensor compares the light reception signal of the light receiving means corresponding to the safety area with a first reference signal to detect the presence or absence of the passer-by, and outputs a safety signal when the passer-by exists , and the activation The light reception signal of the light receiving means corresponding to the area is compared with a second reference signal to detect the presence or absence of the passerby, and when the passerby is present, an activation signal is output. The first and second reference signals are different. When the door opening / closing control means receives the activation signal from the sensor, the door opening / closing operation starts the opening / closing operation of the door. When the safety signal is received from the sensor, the door is stopped or decelerated.

In the automatic door device configured as described above, the safety area and the activation area are set by a single optical sensor even for a door that moves while at least a part of the door projects toward one side of the door opening. be able to. Moreover, since the safety area is set in the entire detection range in which the light receiving means changes the light reception signal by the movement of the door, it is possible to prevent a passerby from coming into contact with the door in advance and increase safety. be able to. Furthermore, if a passerby that has not been detected before is detected in the safety area when the door is being opened or closed, the passerby contacts the door by stopping the door. It is possible to prevent the passerby from coming into contact with the door by decelerating.

The sensor can form a plurality of detection ranges not only on one opening surface side of the opening but also on the other opening surface side. In this case, among the plurality of detection ranges, the light reception signal of the corresponding light receiving means changes as the door is opened and closed. A detection range on one opening surface side and the other opening surface side of the opening is set as the safety area.

  When configured in this way, when opening and closing the door opening, even if a part of the door protrudes to the other opening surface side, a safety area is also formed on the other opening surface side, so safety is ensured. Further improvement.

The door opening / closing control means invalidates the activation signal when the safety signal is received when the door is in the closed position.

  With this configuration, there is a high possibility that a passerby exists in the safety area, so even if a passerby is detected in the activation area, the door will not be opened and closed, and a passerby existing in the safe area will not be opened. Contact with the door can be prevented beforehand.

An activation sensor for activating the door may be provided on the other surface side of the door opening. In this case, the door opening / closing control means invalidates the activation signal and the detection signal of the passerby from the activation sensor on the other side when the safety signal is present at the closed position of the door.

  If comprised in this way, in the state where the door is closed, even if a passerby arrives from which opening side of the door, the door can be opened and closed. Moreover, when a passerby is in the safety area on the door opening surface side with the door closed, the door is not opened and closed, and the safety of the passerby is ensured.

The door opening / closing control means can hold the door in an open state based on an activation signal or safety signal of the sensor at the door open position.

  If comprised in this way, in the state in which the door is opened, as long as the passerby exists in a starting area or a safe area, a door will not be closed and a passerby's safety can be secured.

When the automatic door sensor according to the present invention is installed above one opening surface of a door opening that is folded or opened and closed by a glide-moving door, the sensor is installed on the floor surface from above the one opening surface. A plurality of light receiving means provided corresponding to a plurality of detection ranges formed in the direction is provided. When there is an object in any of the detection ranges, the plurality of light receiving units change the light reception signal corresponding to the detection range in which the object exists. The detection range that passes when the door is opened and closed is set as a safety area, and the control means sets another detection range as an activation area. The sensor compares the light reception signal of the light receiving means corresponding to the safety area with a first reference signal to detect the presence or absence of a passerby in the safety area, and outputs a safety signal when the passerby is absent Outputting, comparing the light reception signal of the light receiving means corresponding to the activation area with a second reference signal, detecting the presence or absence of a passerby in the activation area, and outputting an activation signal when there is a passerby . The first and second reference signals are different.

  If comprised in this way, a safety area and a starting area can be set with one optical sensor also with respect to the door which moves while at least one part of a door protrudes in the one surface side of a door opening. Moreover, since the set safety area is set in the entire detection range in which the light receiving means reacts due to the movement of the door, it is possible to prevent a passerby from coming into contact with the door in advance, thereby improving safety. be able to.

Further, when a plurality of detection ranges are formed on the other opening surface side in addition to the one opening surface side of the door opening, the control means opens one opening of the opening through which the door opens and closes. The detection range on the surface side and the other opening surface side can be set as the safety area.

  With this configuration, when opening and closing the door opening, even if a part of the door protrudes also on the other opening surface side, a safety area is formed on the other opening surface side, so safety is ensured. Further improvement.

  As described above, according to the present invention, even when the door opening is opened and closed by a door such as a folding door or a glide door, the safety area and the activation area can be set by one optical sensor. In addition, all the detection ranges in which the folding door or the glide door moves in the safety area can be set as the safety area, and the safety can be improved.

  As shown in FIGS. 1 and 2, the automatic door device according to the first embodiment of the present invention has a door opening 2 formed through a wall of a building such as a building so as to penetrate inside and outside. The door opening 2 is formed in, for example, a rectangular shape, and an invisible 4 is provided on the upper portion thereof.

  A door 6 that opens and closes the door opening 2 is provided. The door 6 is formed, for example, as a double-folded folding door, and includes suspension panel 6a, 6d and door end panels 6b, 6c. The suspension panels 6a and 6d are rotatably supported at both ends of the door opening 2 around a rotation shaft (not shown) disposed along the height direction of the door opening. . Further, the other ends of the suspension panels 6a and 6d are coupled to one ends of the door end panels 6b and 6c via hinges.

  As shown in FIGS. 3 (a) and 3 (b), the door 6 has a suspension panel 6a, 6d and a door-end panel 6b, 6c in the fully closed state in which the door opening 2 is completely closed by the door 6. The angle is 180 degrees. From this fully closed state, as shown in FIG. 4, as the suspension panel 6a, 6d turns so as to project inside the building around the rotation axis, the door end panels 6b, 6c also project inside the building. Thus, the angle formed by the suspension source panels 6a and 6d and the door end panels 6b and 6c is reduced. Finally, as shown in FIG. 5, the suspension source panels 6 a and 6 d and the door end panels 6 b and 6 c overlap with each other so that the door opening 2 is almost vertical. This state is a fully open state in which the door opening 2 is completely opened. On the contrary, the suspension panel 6a, 6d and the door end panel 6b, 6c move from the fully open state to the fully closed state through the state shown in FIGS. 3A and 3B through FIGS. To do.

  In order to perform such opening / closing control of the door 6, as shown in FIG. 1, the door 4 is opened and closed according to the control of the door control unit 8 and the door control unit 8. The door drive part 10 to drive is provided. In addition, since the structure of a folding door is well-known, the further description about the structure of a folding door is abbreviate | omitted.

  A sensor 12 is provided at the center of one of the opening surfaces of the door opening 2, for example, the center of the blind 4 above the inner opening surface. As shown in FIG. 2, the sensor 12 forms a plurality of, for example, three rows of detection ranges 14 on a floor surface 13 on the inner side of the building from a position closest to the door opening 2 in a direction away from the position. Yes. In each row, the detection range is along the opening surface inside the door opening from one end side of the door opening 2 to the other end side, as shown in FIGS. A plurality of, for example, five are formed. These detection ranges 14 are formed between the sensor 12 and the floor 13 as shown in FIG.

  In order to form these detection ranges 14, the sensor 12 has a pair of light projecting means, for example, a light projector made of an infrared light emitting diode, and a light receiving means, for example, a light receiver made of a light receiving diode. Infrared light is projected toward the surface, and reflected light from the floor surface 13 or an object on the floor surface 13 is received by a light receiver, and the light receiver generates a light reception signal. The light projector and the light receiver are arranged in a line so as to form the detection range 14 of each line described above, for example.

  FIG. 6 shows the light projectors 16a to 16g and the light receivers 18a to 18g used to form five detection ranges in a certain row. In FIGS. 3 to 5, only five detection ranges are shown in one row, but in FIG. 6, seven projectors and one receiver each forming the detection range 14 are shown. This is because the number of detection ranges 14 formed in accordance with the size of the door opening 2 changes. When five detection ranges are formed, five of seven projectors and light receivers are used. Use one by one.

  Further, three rows of light projectors and light receivers can be used corresponding to each row of the three rows of detection ranges 14, or two rows of light projectors and light receivers are provided, and one of these rows is provided. A beam splitter is used to divide the light beams projected from the projectors in two rows so as to form a two-row detection range, and the reflected light from the floor surface 13 or the object of the branched light is synthesized by a light synthesizer. And it can also comprise so that it may inject into a corresponding light receiver. In this case, one row of projectors and light receivers is used for two rows of detection ranges that form a starting area, which will be described later.

  A group of light projectors in each row is referred to as a light projecting unit 16, and a group of light receivers in each column is referred to as a light receiving unit 18.

  The light projecting unit 16 and the light receiving unit 18 are controlled by a light projecting / receiving circuit 20 disposed in the sensor 12, as shown in FIG. That is, the light projecting / receiving circuit 20 causes the light projector of the light projecting unit 16 to emit light or supplies a signal from each light receiver of the light receiving unit 18 to the control unit 22.

  The control unit 22 includes, for example, a CPU 22a and storage means such as a RAM 22b and a ROM 22c. Door position information is input to the control unit 22 via a door position input circuit 24. The door position information is supplied to the door position input circuit 24 from a reed switch provided in the door opening 2 or a rotary encoder provided in the seamless 4. The control unit 22 performs light projection control of the light projecting unit 16 and processing of signals from the light receiving unit 18 while using the RAM 22b as a data area in accordance with a program stored in the ROM 22c.

As signal processing from the light receiving unit 18, each detection range 14 is divided into a safety area and a start area as described later, and the presence or absence of a passerby is determined in the safety area or the start area, and the determination result is output. This is supplied to the door control unit 8 via the circuit 26. The output circuit 26 supplies a safety signal to the door control unit 8 when a passerby exists in one of the safety areas, and sends an activation signal to the door control unit 8 when a passerby exists in any of the activation areas. Supply. The door control unit 8 opens and closes the door 6 when an activation signal is supplied on condition that the safety signal is absent.

  The safety area 28 is set to the detection range 14 in the row closest to the door opening 2 as shown in FIG. That is, four detection ranges excluding the detection range at the center of this row are set in the safety area 28. When the door 6 moves from the closed position to the open position, a detection range at a position through which the suspension source panels 6a and 6d and the door end panels 6b and 6c pass is defined as a safety area 28. The remaining detection range through which these panels 6a, 6b, 6c, and 6d do not pass is set in the activation area 30.

  The control unit 22 compares the signal of the corresponding light receiver with the reference signal in any of the safety area 28 and the activation area 30, and determines whether or not a passerby exists in the area. When it is determined that a passerby exists in one of the areas, a safety signal is output via the output circuit 28. When it is determined that a passerby exists in any one of the activation areas 30, the output circuit 28 is used. Output a start signal.

  Even if there is no passerby, the panels 6a, 6b, 6c, 6d pass through the safety area 28, but the panels 6a, 6b, 6c, 6d do not pass through the activation area 30. Due to this difference, the responses of the light receivers corresponding to the safety area 28 and the activation area 30, for example, changes in the light reception signal are different. For this reason, the reference signal is different between the safety area and the activation area.

  In order to determine this reference signal, the control unit 22 performs an initial sensor learning process. That is, as shown in FIG. 8, when power is supplied to the automatic door device after an instruction for initial learning is given (step S <b> 2), the control unit 22 simulates the door via the output circuit 28. An activation signal is supplied to the control unit 8 (step S4). At this time, it is assumed that the door 6 is in the closed position. The door control unit 8 controls the door driving unit 10 so as to move the door 6 toward the open position.

  When the movement of the door 6 is started, measurement of a received light signal indicating the amount of light received by each light receiver is started (step S6). Based on the door position information input via the door position input circuit 24, it is determined whether the door 6 has moved to the open position (step S8), and steps S6 and S8 are repeated until the answer is yes. If the answer to the determination in step S8 is yes, the received light signal is stored in the RAM 22b for each light receiver (step S10). Here, in each safety area 28, the most changed light reception signal generated when the door panels 6a, 6b, 6c, 6d pass is stored.

  Next, the control unit 22 artificially turns off the activation signal to the door control unit 8 via the output circuit 28 (step S12). In response to this, the door control unit 8 controls the door drive unit 10 to move the door 6 toward the closed position.

  When the door 6 starts moving toward the closed position, measurement of the light reception signal of each light receiver is started (step S14). Then, it is determined whether the door 6 has moved to the closed position based on the door position information input via the door position input circuit 24 (step S16), and steps S14 and S16 are repeated until the answer becomes yes. If the answer to the determination in step S16 is yes, the received light signal is stored in the RAM 22b for each light receiver (step S18). Again, in each safety area 28, the most changed light reception signal generated when the door panels 6a, 6b, 6c, 6d pass is stored.

  The light reception signals obtained during the opening operation and the closing operation are averaged for each safety area 28 and each activation area 30 and stored in the EEPROM 32 as a reference signal (step S20). However, if the received light signals obtained during the opening operation and the closing operation for the same safety area 28 and the same activation area 30 are greatly different, learning is performed again.

  After the reference signal is determined in this way, the door 6 is controlled by the door controller 8 as shown in FIG. That is, when power is supplied to the automatic door device (step S22), the door control unit 8 moves the door 6 to the closed position (step S24). In this state, as shown in FIG. 3A, each safety area 28 and each activation area 30 are valid.

  Next, as a result of the presence of a passerby in any of the safety areas 28, the door control unit 8 determines whether a safety signal is input to the door control unit 8 (step S26). If the answer to this determination is yes, each activation area is invalidated as shown in FIG. 3B (step S28). That is, the door control unit 8 does not open the door 6 even if an activation signal is supplied. Therefore, for example, as shown in FIG. 3B, the passerby P existing in the safety area 28 does not come into contact with the door 6 or get caught. Subsequent to step S28, the process is executed again from step S24.

  If the answer to the determination in step S26 is no, it is determined whether an activation signal is input (step S30). If the activation signal is not input (if the answer to the determination in step S30 is no), the process is executed again from step S24. When the activation signal is input (when the answer to the determination in step S30 is yes), the door control unit 8 starts the door opening operation (step S32). As a result, the door 6 moves as shown in FIG.

  While the door opening operation is being performed, it is determined whether a safety signal is input (step S34). If the answer to this determination is yes, a passerby has entered one of the safety areas 28, so the door 6 is stopped or the speed of the door 6 is reduced (step S36). And in the case of a door stop, it performs again from step S34. In the case of the low speed opening operation, the process is executed from step S32 as indicated by a dotted line in the flowchart of FIG. If a passer-by who has entered the safety area 28 exits the safe area 28 after the door 6 stops or the speed of the door 6 decreases, it is possible to prevent the passer-by from coming into contact with the door 6 or being caught by the door 6. If the passerby leaves the safety area 28, the answer to the determination in step S34 is no in the case of a stop. Eventually, the door 6 reaches the door open position as shown in FIG. 5 (step S38).

  In this open position, the door control unit 8 determines whether a safety signal is input (step S40). If the answer to this determination is yes, the door control unit 8 maintains the door open state (step S42). Following this, the process is executed again from step S40. Therefore, as long as the safety signal is input, the door 6 is not closed.

  If the answer to the determination in step S40 is no, it is determined whether an activation signal is input (step S44). If the answer to this determination is yes, step S42 is executed and the open state of the door is maintained. The If the answer to the determination in step S44 is no, a closing operation of the door 6 is started (step S46).

  During this closing operation, the door control unit 8 determines whether a safety signal has been input (step S48). If the answer to this determination is yes, it is determined that a passer-by has entered one of the safety areas 28 during the closing operation, so the door 6 is stopped or the speed is reduced (step S50). Run again. After the door stops or the door speed decreases, the passer-by exits from the safety area 28, thereby preventing the passer-by from contacting or being caught in the door 6. If the passer-by exits from the safety area 28, the answer to the determination in step S48 is no, and the door control unit 8 determines whether an activation signal is input (step S52). If the answer to this determination is yes, the process is executed again from step S32, and opening of the door 6 is started. If the answer to the determination in step S52 is no, the door 6 eventually reaches the closed position (step S54).

  In the sensor 12 of this embodiment, although it is one sensor, it can be used as a safety sensor and an activation sensor, and cost can be reduced. Moreover, since the safety area 28 is set in the entire range in which the door 6 moves as shown in FIG. 3 (a), there is no detection omission of passers-by and safety can be improved. Further, when a passerby exists in the safety area with the door 6 in the closed position, the door 6 is maintained closed even if there is a passerby in the activation area. 6 does not move, and the safety of passers-by is ensured. Furthermore, even if a passerby enters the safety area during the opening or closing operation of the door 6, the door 6 is stopped or the speed is reduced, so that the passerby contacts the door 6, You can get out of the safety area before being caught. Further, when the passerby is present in the safety area 28 when the door 6 is in the open position, the open state of the door 6 is maintained, so that the passerby in the safe area 28 contacts the door 6. , It won't get caught.

  An automatic door device according to a second embodiment of the present invention is shown in FIGS. In this embodiment, a glide door 6 composed of two door panels 6a and 6b is used. As is clear from both figures, the safety area is formed in two rows, and the safety area 28 in one row is arranged close to one opening surface of the door opening 2 as in the first embodiment. Yes. As shown in FIG. 11, the added row of the safety areas 28 a is formed on the other opening surface side in contact with the safety area 28 on one opening surface side. Thus, since the safety area 28a is formed also on the other opening surface side, a passerby existing on the other opening side contacts or is sandwiched between the door panels 6a and 6b protruding to the other opening surface side. Can be prevented.

  In order to form the safety area 28a, the sensor 12a can be newly formed with a row of light projectors and light receivers, or the safety area 28 can be formed without providing new light projectors and light receivers. It is also possible to divide the light of the projector for the purpose to the other opening side by an optical branching unit, combine the reflected light from the floor surface side with an optical synthesizer, and receive it with the optical receiver for the safety area 28 it can. Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted.

  An automatic door device according to a third embodiment of the present invention is shown in FIGS. In this embodiment, as apparent from both drawings, a start sensor 34 is further added to the second embodiment, and the other surface side of the door opening 2 is located on the other side of the safety area 28a. The activation area 30a is formed at a position distant from. Since other configurations are the same as those of the automatic door device of the first and second embodiments, detailed description thereof is omitted.

  When comprised in this way, in the state in which the door 6 is closed, even if a passerby arrives from any opening surface side of the door 6, the door can be opened and closed. In addition, if there is a passerby in the safety area 28 or 28a on either opening surface side of the door 6 with the door 6 closed, the door 6 is not opened and closed, and the safety of the passerby is ensured. .

  In each of the above embodiments, the door 6 is a double-folded type or a double-glide type, but is a single-folded type, that is, the hanging panel 6a and the door panel 6b (or the hanging panel 6c). And a door made of only the panel 6a (or the panel 6b) may be used. In each of the above embodiments, the sensors 12, 12a, and 34 are provided with a light projecting unit and a light receiving unit. However, the present invention is not limited to this. Only pyroelectric sensors can be used. In each of the embodiments described above, the safety area 28 is formed only in the first row closest to the door opening 2. However, depending on the width dimension of each panel, for example, not only the first row but also the second row is detected. A safe area may be formed in a part of the range.

It is a front view of the automatic door device of a 1st embodiment of the present invention. It is a side view of the automatic door apparatus of FIG. It is a top view when the door of the automatic door apparatus of FIG. 1 exists in a closed position. FIG. 2 is a plan view showing the automatic door device in FIG. 1 being moved to the door open position. It is a top view when a door exists in an open position in the automatic door apparatus of FIG. It is a figure which shows the light projection part and light-receiving part which are used for the sensor in the automatic door apparatus of FIG. It is a block diagram of the automatic door apparatus of FIG. It is a flowchart of the initial learning of the sensor in the automatic door apparatus of FIG. It is a flowchart of the opening / closing control of the door in the automatic door apparatus of FIG. It is a side view of the automatic door apparatus of 2nd Embodiment of this invention. It is a top view of the automatic door apparatus of FIG. It is a side view of the automatic door apparatus of 3rd Embodiment of this invention. It is a top view of the automatic door apparatus of FIG.

Explanation of symbols

2 Door opening 6 Door 8 Door control part (door opening / closing control means)
22 Control unit (setting means)
28 Safety area 30 Start area

Claims (7)

A door that is folded or glideed to one opening face side of the door opening to open the door opening;
A plurality of detection ranges are formed from the upper surface of one side of the door opening toward the floor surface, and there are light receiving means corresponding to the detection ranges, and when an object exists in any of the detection ranges, A corresponding optical sensor for changing the received light signal by the corresponding light receiving means;
Door opening and closing control means for controlling the opening and closing of the door based on the output of the sensor;
An automatic door device comprising:
The sensor sets a detection range of a plurality of detection ranges in which a corresponding light receiving unit changes a light reception signal as the door is opened and closed as a safety area for detecting the presence or absence of a passerby near the door opening. , Having an area setting means for setting another detection range as a start area for detecting the presence or absence of a passerby approaching the closed door,
The sensor compares the light reception signal of the light receiving means corresponding to the safety area with a first reference signal, detects the presence or absence of a passerby in the safety area, and outputs a safety signal when the passerby exists And comparing the light reception signal of the light receiving means corresponding to the activation area with a second reference signal, detecting the presence or absence of a passerby in the activation area, and outputting an activation signal when the passerby exists, The first and second reference signals are different,
The door opening / closing control means starts an opening / closing operation of the door when the activation signal is received from the sensor, and opens the door when the safety signal is received from the sensor during the opening or closing process of the door. Automatic door device that stops or slows down.   The automatic door device according to claim 1, wherein the sensor forms a plurality of detection ranges on the other opening surface side in addition to the one opening surface side of the opening, and among the plurality of detection ranges, An automatic door device that sets, as the safety area, a detection range on one opening surface side and the other opening surface side of the opening through which the door passes as the door is opened and closed.   3. The automatic door device according to claim 1, wherein the door opening / closing control means invalidates the activation signal when the safety signal is received from the sensor when the door is in a fully closed position. . In the automatic door device according to claim 1 or 2, an activation sensor for activating the door is provided on the other surface side of the opening,
The door opening / closing control means invalidates the activation signal and a passer-by detection signal from the activation sensor when the safety signal is present at the fully closed position of the door.   3. The automatic door device according to claim 1, wherein the door opening / closing control means holds the door in an open state based on the activation signal or the safety signal from the sensor in the fully open position of the door. apparatus. A plurality of light receiving means provided corresponding to a plurality of detection ranges formed from the upper side of one opening surface of the door opening that is folded or opened by a door that is glide-moved toward the floor surface, The plurality of light receiving means, when an object exists in any of the detection ranges, the one corresponding to the detection range in which the object exists changes the light reception signal,
While setting the detection range through which the door passes when the door is opened and closed as a safety area, the control means for setting the other detection range as a start area,
The sensor compares the light reception signal of the light receiving means corresponding to the safety area with a first reference signal, detects the presence or absence of a passerby in the safety area, and outputs a safety signal when the passerby exists And comparing the light reception signal of the light receiving means corresponding to the activation area with a second reference signal, detecting the presence or absence of a passerby in the activation area, and outputting an activation signal when the passerby exists, The first and second reference signals are different automatic door sensors. 7. The sensor according to claim 6, wherein the control means forms a plurality of detection ranges also on the other opening surface side of the door opening, and the one opening surface side of the opening that passes when the door opens and closes. An automatic door sensor that sets a detection range on the other opening surface side as the safety area.

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