JPH0765433B2 - Door opening / closing control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a door opening / closing control device that detects that a human body or the like approaches or leaves a door to automatically open and close the door.

[Conventional technology]

This type of door opening / closing control device forms a detection area for detecting the presence or absence of a human body, etc. in front of and behind the door, judges the entry / exit of the human body etc. into / from this detection area, and controls the opening / closing of the door. A detection device for sending a signal for

This type of detecting device has, for example, a light emitting and receiving device as disclosed in Japanese Patent Laid-Open No. 1-99884. The light projecting / receiving device 10 (FIG. 13) disclosed herein is a light projecting element 1 arranged on the back of a light projecting lens 9 in two rows in the door opening / closing direction.
8 to 8 and a light receiving portion 9B formed of two light receiving elements 1A to 8A arranged in two rows in the door opening / closing direction on the back of the light receiving lens 9A. By irradiating the floor with the optical axis toward the floor in front of the door and irradiating the floor with infrared rays,
An irradiation area C composed of divided irradiation areas C1 to C8 as shown in the figure is formed, and the light-receiving elements 1A to 8A direct their optical axes toward the centers of the corresponding divided irradiation areas C1 to C8, respectively. In the irradiation space by 8, as shown in FIGS.
The detection areas S1 to S8 indicated by diagonal lines are formed, and the detection area S is formed as a whole. As shown in FIG. 11, each of the light projecting elements 1 to 8 is controlled by the light projecting element switching switch SW-A at high speed in a sequential and cyclic manner so that the light projecting elements are switched to one another. The output (analog output) of the corresponding light receiving element is sequentially taken out by the light receiving element changeover switch SW-B, noise-removed by the filter, and then converted into a digital value, and the digital average value is formed by the control unit (comprising a microcomputer. ) And the digital average value of the output is at the human body level, a door open signal is sent to the door opening / closing drive (door engine controller) through the timer (setting time T ₀ ) to open the door. Let

FIG. 9 is a schematic diagram for explaining a conventional example of a door opening / closing control device using this detection device. In the figure, 20 is an automatic door which is controlled to be opened and closed by a door opening / closing drive DRIVE. 30A, 30B is the above-mentioned detection device, which has a block configuration as shown in FIG. 10 and is provided on both sides of the automatic door 20 of, for example, the ceiling of the building entrance and exit, and the above-mentioned detection device 30A has. The light emitting and receiving device forms a detection area A in the front part of the automatic door 20, and the above-described light emitting and receiving device of the detection device 30B forms a detection area B in the rear part of the automatic door 20.

FIG. 10 is a functional block diagram showing a conventional operation of an example of a conventional door opening / closing control device, 31A is a detection area A of the detection device 30A.
An entry determination circuit, 32A is a door open signal output circuit, 31B is a detection area B entry determination circuit, 32B is a door open signal output circuit, and 33B is a gate element with a latch function. The gate element 33B is in an output prohibited state when the door open signal SA sent from the door open signal output circuit 32A is supplied, and after the signal disappears, a predetermined time Ty elapses or the human body a is detected from the detection area B. The output prohibition state is maintained until the door is opened and the door open signal SB sent from the door open signal output circuit 32B disappears.

In this configuration, as shown in FIG. 14, the human body a now enters from the detection area A and the automatic door is opened as indicated by the solid arrow.
20 → Pass through detection area B.

When the human body a enters the detection area A, the detection area A entry determination circuit 31A of the detection device 30A detects the human body a, generates a human body detection signal X, and outputs a door open signal output circuit to which the human body detection signal X is input. 32A sends a door open signal SA to a door opening / closing drive DRIVE (not shown). As a result, the automatic door 20 starts to open. When the human body a enters the detection area B through the open automatic door 20, the detection area B of the detection device 30B is detected.
The entry determination circuit 31B detects the human body a, and the door open signal output circuit 32B sends the door open signal SB, but the gate element 23B is in a prohibited state by the door open signal SA of the detection device 30A. The open signal SB is not supplied to the door opening / closing drive DRIVE, and the automatic door 20 starts the closing operation when the human body a passes the detection area A and the door open signal SA disappears.

[Problems to be Solved by the Invention]

Thus, since the gate element 33B is in the output prohibited state after the door open signal SA disappears or until the human body a exits from the detection area B, as shown in FIG.
If another human body b heading for the automatic door 20 enters the detection area B when passing through the automatic door 20, the automatic door 20 will exit even though the human body b is about to exit the detection area B and pass through the automatic door 20. Starts to close and the human body b may get caught in the automatic door 20.

That is, in this conventional configuration, when a human body enters the detection area A and then another human body that faces the automatic door 20 enters the detection area B, the detection device 30B causes the other human body to pass through the automatic door 20. Since it is not possible to determine the direction of the human body that is facing the automatic door 20,
There is a problem in that it cannot be guaranteed that the other human body passes the automatic door 20 safely.

In order to solve this problem, the present applicant previously proposed a door opening / closing control device in which the detection area B is divided into two, a near door detection area B1 and a far door detection area B2, as shown in FIG. did.

In this configuration, the near door detection area B1 is masked and detected until a predetermined time elapses after the door open signal output by the detection device 30B disappears on condition that a person has entered the detection area A formed by the detection device 30A. The device 30B is set to the output prohibited state, and the above person passes through the detection area A and the near door detection area B1
The detection device until the person leaves the far door detection area B2 by masking the far door detection area B2 on condition that the person has moved to
Keep the 30B output disabled state.

Therefore, the person a heads toward the door from the detection area A side formed by the one detection device 30A, passes through the door, and closes the door detection area.
When exiting from B1 to the non-detection area via the distance detection area B2, that is, when a person a passes through the door from the one detection area A, the person a does not detect via the distance detection area B2. Until exiting to the area, the other detection device 30B is restricted to the output prohibited state and does not output the door open signal. Therefore, when a predetermined time elapses after the door open signal sent by the detection device 30A disappears, the door promptly enters the closing operation.

When a person passes through the door from the far door detection area B2 through the near door detection area B1, none of the detection areas is masked.

The first person a heads to the door from the detection area A formed by the detection device 30A, and at this time, the second person b is the far door detection area.
When the second person b enters the far door detection area B2 when entering B2 toward the door, the first person a detects the detection device 30.
Since the output prohibition state of the detection device 30B associated with entering the detection area A formed by A is released, and the detection device 30B outputs a door open signal until the second person b has finished passing through the door, The first person a as well as the second person b can safely pass through the door.

However, in this configuration, when the first person a enters the near door detection area B1, the far door detection area B2 is masked, so at this time, as shown in FIG. When entering the far door detection area B2 from the detection area and heading for the door, the detection device 30B is in the output prohibited state, and therefore the door is starting to close, and the second person b may not be able to safely pass through the door. There was a problem that it would occur.

The present invention has been made in order to solve the above problems, and when the human body moves toward the automatic door from both sides of the automatic door or at the same time, both of them can safely pass through the automatic door. In addition, it is an object of the present invention to provide a safe and reliable door opening / closing control device.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a door opening / closing drive device for opening and closing the door when a human body is detected by forming a first detection area for detecting a human body on one side of the door. When a human body is detected by forming a second detection area for detecting a human body on the other side of the door, a first detection device that sends an open signal, and outputs a second door open signal to the door opening / closing drive device. In the door opening / closing control device including the second detection device for sending out,
The detection area formed by at least one detection device is divided into two stages, a near door detection area near the door and a far door detection area, and the far door detection area is at least three small detection areas in the door opening / closing direction. The adjacent door detection area is masked until a predetermined time elapses after the door open signal output by the other detection device disappears, provided that a person has entered the detection area formed by the other detection device. A person detects the far door by masking the far door detection area on condition that the one detection device is in an output prohibited state and the person has moved to the near door detection area via the other detection area. The output prohibition state of the one of the detection devices is continued until the user exits the area, and when a person enters two small detection areas that are not adjacent to each other among the plurality of small detection areas, the one of the detection devices is detected. It is obtained by a structure for releasing the output disabled state of the location.

In claim 2, the small detection area is not wide enough so that two people pass each other in opposite directions.

[Action]

In the present invention, when a person goes to the door from the detection area side formed by the other detection device, passes through the door, and exits from the near door detection area to the non-detection area via the far detection area,
When a person enters the one detection area, the one detection device is locked in the output prohibited state and does not output the door open signal until the person exits the non-detection area via the far detection area. Therefore, when a predetermined time elapses after the door open signal sent by the other detection device disappears, the door promptly enters the closing operation.

When a person passes through the door from the far door detection area through the near door detection area, none of the detection areas is masked.

When the first person moves toward the door from the detection area formed by the other detection device, and when the second person enters the far door detection area toward the door, the second person moves the far door. When entering the detection area, the output prohibition state of the one detection device due to the first person entering the detection area formed by the other detection device is released, and the one detection device is activated by the second detection device. Since the door open signal is output until the second person finishes passing through the door, not only the first person but also the second person can safely pass through the door.

When the first person passes through the door and goes from the near door detection area to the far door detection area, and when the second person enters the far detection area from the non-detection area, When two persons enter the small detection areas that are not adjacent to each other, the output prohibition state of the one detection device is released and the detection device sends a door open signal, so that the second person opens the door. You can pass safely.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the detection device 30B shown in FIG.
A detection area (near door detection area) B1 and a detection area (far door detection area) B2 are formed behind and behind the automatic door 20 in two steps. This detection area B2 is a small detection area B2b in the center and small left and right sides. It consists of detection areas B2a and B2c. These small detection areas are not large enough for two people.

In this embodiment, a small detection area B2a is a detection area formed by the light emitting element 1 and the light receiving element 1A of the light emitting and receiving device 10 shown in FIG. 13, and a small detection area B2 is a detection area formed by the light emitting element 2 and the light receiving element 2A.
b, the detection area created by the light emitting element 3 and the light receiving element 3A is defined as a small detection area B2c, and each of the light receiving elements 1A to 3A (light receiving portions B2a to B2 in the figure).
The digital value MB2a, MB2 obtained by A / D conversion of the output (indicated by c)
b, MB2c main controller (comprising a microcomputer)
The CPU compares the judgment values KB2a, KB2b, and MB2c, respectively,
If the corresponding judgment value is reached, under certain conditions,
The human body detection signal X is sent out, and a set of light projecting elements 5 to 7 (shown by a light projecting section B1 in the figure) and light receiving elements 5A to 7A are set (in the figure,
The detection area created by the light receiving unit B1) is defined as the detection area B1, and the average value MB1 (hereinafter referred to as the output average value) of the digital values obtained by A / D converting the outputs of the light receiving elements 5A to 7A is used as the main control unit CPU.
In comparison with the judgment value KB1, when the judgment value KB1 is reached, the human body detection signal X is sent out under certain conditions to detect the above-mentioned detection areas B1 and B2 (small detection areas B2a to B2c).
Is divided into). The CPU has a program represented by the operation flow shown in FIGS. 3 (a) and 3 (b). The light projecting elements 4 and 8 and the light receiving elements 4A and 8A of the light projecting / receiving device 10 are not used.

The light emitting elements 5 to 7 of the light emitting unit B1 are cyclically controlled at high speed in a predetermined order, and the outputs of the corresponding light receiving elements 5A to 7A of the light receiving unit B1 are sampled in synchronization with this lighting control. Amplification section AMP, noise removal filter section BPF
After being passed through (Band pass filter), it is digitally converted and taken into the CPU. Similarly, each of the light projecting elements 1 to 3 of the light projecting section B2a to the light projecting section B2c is ON / OFF lighting controlled at high speed, and the output of the corresponding light receiving section B2a to the light receiving section B2c is sampled in synchronization with this lighting control. After passing through the amplification unit AMP and the bandpass filter unit BPF, it is digitally converted and taken into the CPU. SWICH is a light receiving element 1A-3A, 4A-7A
Light output selection section, OUT
Is a door open signal output section that receives a human body detection signal X from the CPU and sends a door open signal SB. The door open signal SB is turned off after a lapse of a predetermined time T ₀ after the disappearance of the human body detection signal X. POWER is the power supply of the detection device 30B. The detection device 30A is the conventional detection device described above, and the door open signal SA output from the detection device 30A is supplied to the CPU of the detection device 30A.

In addition, in order to understand the operation of the above-described embodiment at a glance, FIG. 4 shows the present embodiment expressed as functional blocks.

The gate element 23B1 in FIG. 4 is in the output prohibited state while receiving the door open signal SA. Also, the gate element
23B2 is in an output prohibited state while receiving the door open signal SB1. 23B3 is an AND element, and small detection areas B2a and B
When a person is simultaneously entering 2c, the door open signal SB is passed to the door opening / closing drive device DRIVE.

Next, the operation of the embodiment shown in FIG. 1 will be described with reference to FIGS.
This will be described with reference to the operation flow shown in.

When the power switch (not shown) is turned on, the CPU is initialized, and the mode setting section (not shown) of the CPU displays MODE =
0 is set. This MODE = 0 is a mode in which a person does not enter any of the detection areas A and B1 and B2 (small detection areas B2a to B2c).

I] Now, as shown by the broken line in FIG. 5, the person a is in the detection area A.
It shall be directed to the automatic door 20 from the side.

(A) When a person a enters the detection area A, the detection device 30A
Sends the door open signal SA to the door open / close drive DRIVE and the detector 30B
To the CPU. This door open signal SA activates the door open / close drive signal DRIVE to start opening the automatic door 20. The CPU, which receives the door open signal SA, sets the mode to MODE = since no person has entered the detection areas B1 and B2.
Switch to 3 (step indicated by reference numeral).

This MODE = 3 is based on the condition that a person has entered the detection area A, until the door open signal SA disappears for a predetermined time, the door open signal SB (the door open signal accompanying the person entering the detection area B1 ) Is prohibited, in other words, the detection area B1 is masked.

(B) When the person a passes through the automatic door 20 and enters the detection area B1, the output average value MB1 of the light receiving elements 5A to 7A reaches the determination value KB1, so the CPU sets a flag (detection area B1 flag). (Step indicated by reference numeral (A)), since MODE = 3, the human body detection signal X is not transmitted, and accordingly, the detection area
The door open signal output section OUT does not output the door open signal SB even though the person a is entering B1, and the CPU sets the mode to MODE.
= 4 (steps indicated by reference symbols to).

In this MODE = 4, the door open signal SB (the door open signal due to the person entering the detection area B2) is kept until the person exits the detection area B1 on condition that the person a enters the detection area B1. This is a mode in which generation is prohibited, in other words, a mode in which the entire detection area B2 is masked.

(C) When the person a moves from the detection area B1 to the detection area B2, for example, the small detection area B2a, the output average value MB1 is the determination value KB1.
However, the output value MB2a of the light receiving element 1A is the judgment value KB2a.
Therefore, the CPU sets a flag (detection area B2a flag) (step indicated by reference sign (C)). However, MODE = 4
Therefore, even though the person a has advanced to the detection area B2, the door open signal output unit OUT does not output the door open signal SB,
The CPU switches the mode to MODE = 5 (from step)).

This MODE = 5 is a mode in which a person has moved from the detection area B1 to the detection area B2 (small detection area B2a or B2b or B2c), which is a mode in which the operation of prohibiting the generation of the door open signal SB is continued, that is, the detection area. In this mode, the mask of the entire B2 is continued.

(D) When the person a exits from the small detection area B2a of the detection area B2 to the non-detection area, the output value MB2a deviates from the determination value KB2a. Therefore, the small detection area B2a flag is set back to the initial state, and the mode is MODE = 0. Switch to (step ~
).

In this way, the person a enters the detection area A, and the automatic door 20
When the person a enters the detection areas B1 and B2, the door open signal SB is not generated and the door is not released when the person a enters the detection areas B1 and B2. The automatic door 20 is controlled to be opened and closed by the open signal SA, and when the person a passes through the automatic door 10, the automatic door 20 immediately starts the closing operation and closes.

II] Next, a case where the person b is heading toward the automatic door 20 from the detection area B2 side as shown by the solid line in FIG.

(E) When the person b enters the detection area B2, for example, the small detection area B2c from the non-detection area, the output value MB2c of the light receiving element 3A
Has reached the judgment value KB2c, the CPU sets a flag (small detection area B2c flag) (step indicated by reference numeral (C) '). At this time, since MODE = 0 (step (F)), the CPU outputs the human body detection signal X (code (G)).
Step), the door open signal output unit that received this output
OUT outputs the door open signal SB to the door opening / closing drive device DRIVE. At the same time, the CPU switches to MODE = 1 (step ~
).

This MODE = 1 is a mode in which the door open signal SB is generated on condition that a person has entered the detection area B2 from the non-detection area regardless of the presence or absence of the person in the detection area B1 and the detection area A. .

(F) When the person b passes through the small detection area B2c of the detection area B2 and enters the detection area B1, the output value MB2c is the determination value KB.
Although it deviates from 2c, the output average value M of the outputs of the light receiving elements 5A to 7A
Since B1 reaches the judgment value KB1, the CPU sets the detection area B1 flag (step indicated by reference numeral (A)), and since MODE = 1 (step (B)), continuously outputs the human body detection signal X, The door open signal SB continues to be sent, and the automatic door 20 remains open. The mode is switched to MODE = 2 (steps indicated by reference symbols ~).

This MODE = 2 is a mode in which a person moves from the detection area B2 to the detection area B1, and is a mode in which the generated door open signal SB is continuously generated.

(G) When the person b exits the detection area B1 and the output average value MB1 deviates from the determination value KB1, and then a predetermined time T ₀ passes, the CPU lowers the detection area B1 flag (step (H)). As a result, the door open signal SB disappears and the automatic door 2
0 is closed (step (I)). At this time, if there is no person in the detection area A and the door open signal SA is not generated, the CPU switches to MODE = 0 after a lapse of a predetermined time, and there is a person in the detection area A, and the door is opened. If signal SA is generated, switch to MODE = 3 (step ~
).

III] Next, when a person approaches the automatic door 20 from both sides of the automatic door 20, that is, in a state where the person a is entering the detection area A or before the person a enters the detection area B1, A case where the person b enters the detection area B1 from the opposite direction will be described.

(H) The state in which the person a exists in the detection area A is MODE = 3 (step), the automatic door 20 is in the opening operation by the door open signal SA, and the door open signal SB (the person is in the detection area). Output of the door open signal) due to entering B1 is prohibited. When the person b enters the small detection area B2c of the detection area B2, the small detection detection area B2c flag is set as described above, and the detection device 30B outputs the door open signal SB (step (J)). The mode changes from MODE = 3 to MODE = 1 (steps ~), and the output prohibition state (mask state of the detection area B1) of the door open signal SB (door open signal due to a person entering the detection area B1) is released. .

(I) When person b moves from detection area B2 to B1, detection area
Since the B1 flag is set (after that, the detection area B2 flag is reset) and MODE = 1, the door open signal SB is output until a predetermined time passes after the person b passes the detection area B1. to continue. That is, even if the person a passes through the automatic door 20, the automatic door 20 is not closed, and the door open signal SB is continuously transmitted until the person b passes through the automatic door 20.

IV] When the person a moves from the detection area A to the detection area B, for example, the small detection area B2a, as shown in FIG.
It is assumed that the person b has entered the detection area B. Small detection area B2
Since a to B2c are not large enough for two people to enter at the same time, the person b now enters the small detection area B2b or the small detection area B2c. Now, assuming that the person b has entered the small detection area B2c, since MODE = 5 (step), the door open signal SB is not output, but the person exists in the small detection areas B2a and B2c that are not adjacent to each other. Therefore, through steps, the mode is switched to MODE = 1, the output prohibition state of the detection device 30B is released, and the door open signal SB is sent to the door opening / closing drive device DRIVE (step (K) or (G)) to automatically The door 20 is opened.

(K) When the person b advances to the detection area B1, the door open signal SB continues to be output, the process proceeds from step to MODE = 2, and the person b passes through the automatic door 20.

In addition, the small detection area where the person a and the person b are adjacent to each other, for example,
When only B2a and B2b are entered, the release operation of the output prohibition state of the detection device 30B described in the item (j) above is not performed. This is because the person a or person b does not pass over the three small detection areas B2a to B2c, but
As shown in the figure, one person may pass over the small detection areas B2a and B2b and the small detection areas B2b and B2c, and it is possible to prevent such a mode from being erroneously determined as face-to-face traffic. This is because If one person passes over the adjacent small detection area, go through step 17 and press MODE
= 5 and the output prohibition state of the door open signal SB is maintained.

As described above, in the present embodiment, when a person enters the detection area A from the non-detection area, the detection area B1 is masked, and when the person enters the detection area B1, the detection area B2 is detected.
Since the above person is masked, when the above-mentioned person passes through the automatic door 20, the automatic door 20 can be promptly closed, and when the person is moving from the detection area A side to the detection area B1 side, another person does not detect. When entering the detection area B2 from the area,
Even if the mask operation is released and a person from the detection area A passes through the automatic door 20 and the door open signal SA disappears, the door open signal SB is sent to the door opening / closing drive device DRIVE. The other person can safely pass through the automatic door 20 without closing.

In addition, after passing through the automatic door 20, the detection area from B1 to the detection area
When another person enters the detection area B2 from the non-detection area at the same time when the person enters B2, and when both enter the small detection areas B2a and B2c apart from the detection area B, both are detected areas. Since it is determined that the person is passing B in a face-to-face manner and the output stop of the door open signal SB is released, the other person who enters the detection area B from the non-detection area and heads for the automatic door 20 can automatically change the automatic door 20. Until it passes, the automatic door 20 is opened, and the other person can safely pass through the automatic door 20.

In the above embodiment, the detection area of the detection device 30B is set to 2
Although it is divided into stages, the number of divided stages may be increased as necessary.

In the above embodiment, the detection area of the detection device 30B is divided into two stages, but not only on the detection device 30B side,
The detection area of the detection device 30A is also divided into two stages, and the detection device 3
The configuration may be such that 0A executes the operation according to the above-described operation flow.

Further, the number of divisions of the small detection areas is not limited to three of the embodiment, and may be divided into four or more small detection areas.

Further, in the above embodiment, the light receiving elements 1A to 3A of the light emitting and receiving device 10 are provided.
However, the method of classifying the small detection area is not limited to this.

Further, in the above embodiment, the detection devices 30A and 30B including the CPU are provided.
Although the human body detection is performed by using the software, it goes without saying that a detection device that detects the human body by hardware may be used.

〔The invention's effect〕

As described above, according to the present invention, at least one of the detection areas formed on both sides of the door is divided into two stages, a near door detection area and a far door detection area, and the far door detection area is divided into a plurality of small detection areas. If a person enters the other detection area, the near door detection area is masked, and if a person who enters this detection area enters the near door detection area, the far door detection area is When a person masks and enters the far door detection area from a non-detection area, the mask operation is unconditionally released, and a person is placed in a small detection area that is not adjacent to the far door detection area. When entering at the same time or before or after, it is judged that the person who has passed through the door and the person who is going to the door have entered the far door detection area and the mask of the far door detection area is released. , Even if a person is moving toward the door from both sides of the door, or if a person is moving from both sides of the far door detection area, the door is Since both persons can safely pass through the door without entering the closing operation, safety and reliability can be improved as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a schematic diagram for explaining a detection area in the above embodiment,
3 (a) and 3 (b) are operation flow diagrams of the program of the CPU in the above embodiment, FIG. 4 is a diagram showing functional blocks of the above embodiment, FIGS. 5 (a) and 5 (b) and FIG. 6 is a diagram showing a relationship between a person and a detection area for explaining the operation of the above embodiment, FIG. 7 is a diagram showing a detection area of a door opening / closing control device in which the detection area is divided into two, and FIG. Is a diagram for explaining a detection area of a conventional door opening / closing control device, FIG. 9 is a diagram showing a relation between a detection area and a person for explaining conventional problems, and FIG. 10 is a conventional door opening / closing control 11 is a block diagram for explaining the conventional detection area forming method and FIG. 13 is a view of the formed detection area. FIG. 13 is the conventional door opening / closing control device. Figures 14 and 15 show an example of a light emitting and receiving device used in It is a diagram showing a relationship between human and the detection area for explaining the operation of the control device. 10 …… Emitter / receiver, 20 …… Automatic door, 30A, 30B …… Detector, CPU …… Main controller, A, B1, B2 …… Detection area, B2 …… Detection area, B2a to B2c …… Small Detection area.

Claims (2)

[Claims] 1. When a human body is detected by forming a first detection area for detecting a human body on one side of the door, a first door open signal is sent to a door opening / closing drive device for opening and closing the door. First
Detecting device for detecting a human body by forming a second detection area for detecting a human body on the other side of the door, and sends a second door open signal to the door opening / closing drive device. In the door opening / closing control device, the detection area formed by at least one of the detection devices is divided into two stages, a near door detection area near the door and a far door detection area, and the far door detection area is opened / closed in the door opening / closing direction. Is divided into at least three small detection areas, and if a person has entered the detection area formed by the other detection device, a door opening signal output from the other detection device is output until the predetermined time elapses after the disappearance. The door detection area is masked to disable output of one of the detection devices, and the far door detection area is masked on condition that the person moves to the near door detection area via the other detection area. To continue the output disabled state of said one sensing device to the person exits the distal door detection area and,
A door opening / closing control device, which releases an output prohibition state of one of the detection devices when a person enters two small detection areas that are not adjacent to each other among the plurality of detection regions. 2. The door opening / closing control device according to claim 1, wherein the small detection area is not wide enough for two people to pass in opposite directions.