JP7353642B2 - Door opening/closing control system - Google Patents

Description

The present invention relates to, for example, a door opening/closing control system for opening and closing automatic doors.

Conventionally, when a part of the human body touches or comes close to a touch switch installed on an automatic door or other door (including those installed around the door), a touch signal is sent from the touch switch. A door opening/closing control system that opens a door by opening the door is known. Touch switches are often used in high-traffic areas to open the door only to those who intend to pass through it, and to open the door to those who do not intend to pass through the door. It is used for the purpose of preventing malfunction.

In such a door opening/closing control system, a timer or the like is used to measure the time after the door is opened, and the door is closed after a certain period of time has elapsed. In this case, a person who cannot pass through the door within the certain period of time may be trapped by the door. Therefore, a door opening/closing control system is known that separately includes a so-called safety sensor that detects an object such as a person on the opening/closing trajectory of the door and closes the door after the object has passed. This safety sensor allows the door to close after no one is in the door's opening/closing trajectory. In addition to this safety sensor, even if an area sensor is used that detects surrounding objects, including those in the immediate vicinity of the door, based on detection waves such as infrared rays from the objects, even if the above-mentioned certain period of time has elapsed, Since the door can be closed after detecting that the person passing through the door has completed the passage, safety on the opening/closing track can be ensured, and safety around the door in the event of a collision can also be ensured. AIR sensors [Active Infra-Red Sensors] are mainly used as safety sensors and area sensors. Note that instead of the AIR sensor, a sensor whose detection principle is a hot wire type, ultrasonic type, MW type, laser type, image type, etc. may be used.

Patent Document 1 discloses a door opening/closing control system that uses a sensor such as the area sensor described above to avoid getting caught in the door, by receiving reflected microwave waves and controlling the gap between the transmitted wave and the reflected wave. Equipped with a moving object detection unit that detects the presence of a moving object using frequency changes of An automatic door device for avoiding is disclosed.

Patent No. 3842274

However, the automatic door device of Patent Document 1 requires a separate moving object detection section that utilizes the frequency change between the transmitted microwave wave and the reflected wave as described above, which makes the device configuration complicated. There is a problem that the cost of the device increases. In addition, in the door opening/closing control system equipped with the above-mentioned touch switch, in order to improve the safety of passersby who take a long time to pass through the door, such as elderly people and people with disabilities, the time period for which the door is held open (hereinafter referred to as On the other hand, there is a demand to be able to extend the open-hold time (also known as open-hold time) for healthy people, etc. However, if the open-hold time is uniquely extended, it may lead to a decrease in the efficiency of air conditioning inside a building, for example in the summer. It has been pointed out that it is necessary to avoid uniquely extending the open holding time because of the risk of this. However, it is necessary to avoid complicating the structure of the device and increasing the cost of the device, such as the problems with the automatic door device described above.

In addition, the automatic door device of Patent Document 1 only mentions the avoidance of entrapment during the closing operation of the door, and does not mention the points to be noted when the door transitions from the fully open state to the closing operation. In other words, for example, passersby who take a long time to pass through a door, such as elderly people or people with disabilities, may have to rest with their hands on the door when it is fully open. Passersby may be pushed against the door when the door closes. Regarding this, the above-mentioned safety sensor misses detection, and the area sensor has a stationary object detection time that takes into consideration passersby's stopping, so this is a phenomenon that can similarly occur, and is a safety issue. There may be a need to ensure that In addition, for example, there is a possibility that a passerby may rest by resting on a door outside the detection area of the sensor or area sensor of Patent Document 1, so there is a need to ensure safety by a method other than motion detection or object detection. sell.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, reduces the complexity of the device configuration and increases in device cost, while ensuring the above-mentioned safety and reducing the possibility of passersby getting caught in the door. The purpose is to provide a control system.

As a result of various studies, the present inventors have found that the above object can be achieved by the following present invention.

The door opening/closing control system according to the present invention includes:
a touch switch provided on the door and transmitting a touch signal upon contact or proximity of a part of the human body;
an area sensor forming a detection area that detects objects around the door based on detection waves from the objects;
a receiver that receives a touch signal from the touch switch and outputs a door opening control signal;
activating means for opening the door when receiving the door opening control signal and keeping the door open only for an open holding time;
The receiver adjusts the hold-open time according to the time required for a passerby to reach the door.

According to this configuration, the door opening/closing control system uses the existing configuration without adding a new configuration, and extends the opening holding time according to the time required for a passerby to reach the door. Since the adjustment is made, it is possible to reduce the complexity of the device configuration and increase in device cost, while ensuring the above-mentioned safety and reducing the chance of passersby getting caught in the door.

In the above configuration, the receiver receives an input of a detection result indicating that the passerby has been detected from the area sensor, measures the time required from inputting the detection result to receiving the touch signal, and measures the time required from inputting the detection result to receiving the touch signal. It is preferable that time is set as the required time for the passerby to reach the door, and the open holding time for keeping the door open is adjusted according to the required time for the passerby to reach the door. In this case, the human body is the passerby, and the area sensor detects the passerby as an object based on detection waves such as infrared rays from the passerby. This increases the complexity of the device configuration because the existing receiver adjusts the open holding time for keeping the door open using the detection results of the existing area sensor and the touch signal from the existing touch switch. , it is possible to realize a specific configuration that can reduce the risk of passersby getting caught in the door while reducing the increase in device cost.

In the above configuration, the area sensor outputs the detection result to the receiver when detecting the passerby in a designated area included in a far area other than the area near the door in the detection area. It is preferable. As a result, a passerby, which is an object, is detected in a specified area included in the far area, so that an appropriate time required for passing can be obtained, so that the opening holding time can be appropriately adjusted.

In the above configuration, it is preferable that the receiver makes the open holding time longer than a normal value when the required travel time is longer than a designated time. This makes the system suitable for passersby who take a long time to pass through the door, such as the elderly and the handicapped.

In the above configuration,
The touch switch may be a mechanical switch that sends the touch signal upon contact with the part of the human body, or may detect the part of the human body in a touch detection area near the touch switch to detect the proximity of the part of the human body. It is preferable that the touch signal is an optical sensor that sends out the touch signal according to the method. This makes it possible to open the door not only by contact but also by non-contact.

The door opening/closing control system according to the present invention eliminates the above-mentioned drawbacks of the conventional technology and reduces the complexity of the device configuration and increase in device cost, while ensuring the above-mentioned safety and reducing the chance of passersby getting caught in the door. can.

1 is a schematic side view of a door opening/closing control system according to an embodiment of the present invention. It is a conceptual block diagram of the control part of the door opening/closing control system. It is a flow diagram for explaining the operation of the same door opening/closing control system.

Embodiments of the present invention will be described below based on the drawings. Note that the same reference numerals in each figure indicate the same or corresponding parts, and unless there is a special explanation of changes, the explanation will be omitted as appropriate.

<Basic configuration and basic operation of the door opening/closing control system>
FIG. 1 shows a schematic side view of a door opening/closing control system 1 that opens and closes a door 500 according to an embodiment of the present invention. The door opening/closing control system 1 of this embodiment performs door opening/closing control such as opening an automatic door. That is, in the present embodiment, the door 500 is a sliding double-opening or single-opening automatic door, and is suspended and supported by a door 400 that is a horizontal member such as a threshold or a lintel. The door opening/closing control system 1 according to the present embodiment can be applied, for example, to door opening/closing control such as opening an automatic door as described above, but is not limited to this automatic door. It can also be applied to lock/unlock control that performs unlocking, etc.

The door 500 is equipped with a touch switch 210 that sends out a touch signal TS (FIG. 2) when a part of the human body comes into contact with or approaches the door 500, as shown in FIG. On the main surface of the door, it is provided near the edge that faces the passageway when the door is opened. When the touch signal TS is sent from the touch switch 210, the automatic door 500 is opened as described later. Therefore, a person who intends to pass through the automatic door presses the touch switch 210.

The touch switch 210 of this embodiment is a mechanical switch that sends out a touch signal TS in response to contact with a part of the human body. Note that the touch switch 210 may be an optical sensor that detects a part of the human body in a touch detection area near the touch switch and sends out a touch signal TS due to the proximity of the part of the human body. In this case, it becomes possible to open the door not only by contact but also by non-contact.

In the same figure, an area sensor 300 is further provided in the blind 400 of the door 500. The area sensor 300 forms a detection area that detects objects around the door 500 based on detection waves from the objects. In this embodiment, the area sensor 300 is, for example, an AIR sensor [Active Infra-Red Sensor: active infrared sensor], and in the detection areas D1 to D6 in the same figure, the infrared rays contained in the detection waves from the target object 600 are detected. , and the object 600 around the door 500 is detected. In this embodiment, the target object 600 is a human body, and includes, for example, a visually impaired person, a wheelchair user, a stroller or trolley user, or a person whose hands are occupied due to luggage, children, etc.

The detection areas D1 to D6 are areas in a column direction parallel to the lower edge of the door 500, and are arranged adjacent to each other. Detection area D1 is located closest to door 500, detection areas D2 to D5 move away from door 500 in this order, and detection area D6 is the detection area furthest from door 500. In this way, the area sensor 300 can detect the object 600 at least in the column direction parallel to the lower edge of the door 500. That is, the area sensor 300 is capable of detecting at least the distance of the object 600 from the door 500. In this case, the area sensor 300 can detect the movement MV (approaching direction and receding direction) of the object 600 with respect to the door 500. Note that, in the following, among the detection areas D1 to D6, the detection areas D1 and D2 near the door 500 are referred to as nearby areas. Further, detection areas D3 to D6 other than the detection areas D1 and D2 near the door 500 are referred to as far areas. Note that the boundary between the nearby area and the far area is not limited to between the detection areas D2 and D3, and can be changed. In the figure, the detection range in which detection waves (infrared rays) from objects can be detected in detection areas D1 and D2, which are nearby areas, and the detection waves (infrared rays) from objects in detection areas D3 to D6, which are distant areas, are shown. The detection range where it can be detected is indicated by separate hatching. Here, in the present embodiment, each of the column-shaped detection areas D1 to D6 has a spot-shaped spot that enables detection of individual objects in the lateral direction to the door 500 (or in the row direction perpendicular to the column direction). Contains multiple individual detection areas. This can be realized, for example, by the area sensor 300 being configured with an 8×6 matrix of infrared sensing elements (sensors).

As shown in FIG. 2, the touch signal TS, which is a wireless signal, is sent from the touch switch 210 to a receiver 200, which is a so-called touch switch sensor. Upon receiving the touch signal TS, the receiver 200 outputs a door opening control signal DS to the door controller 100. When the door controller 100, which is a starting means, receives the door open control signal DS, it opens the door 500, keeps the door open for only the open holding time, and then closes the door 500. Specifically, upon receiving the door opening control signal DS, the door controller 100 outputs an opening drive command for driving the motor to open the door 500 of the automatic door to the opening/closing drive section DD, which includes a motor that drives the door 500 to open and close. This causes the door 500 to be opened. As described above, when a person who intends to pass through the automatic door presses the touch switch 210, the automatic door 500 is opened. Note that the activation means may include the opening/closing drive unit DD that drives the door 500 to open and close.

The receiver (touch switch sensor) 200 measures time using a timer or the like after opening the door, and notifies the door controller 100 when a certain period of time has elapsed, and the door controller 100 confirms the elapsed time set by itself. Thereafter, the door 500 is closed by outputting a closing drive command to the opening/closing drive section DD. At this time, in this embodiment, an area sensor 300 described later is used to detect an object 600 such as a person on the opening/closing trajectory of the door 500, change the closing operation of the door 500 to an opening operation, and detect the object 600 on the opening/closing trajectory of the door 500. to prevent the door from being caught in the door 500. Since this area sensor 300 is used in combination with the touch switch sensor 200 in this embodiment, it will also be referred to as a combination sensor 300 below.

<Change of open holding time, extension operation>
The receiver 200 of this embodiment includes an open-hold time adjustment section 200a that adjusts the open-hold time according to the time required for the object 600, which is a passerby, to reach the door 500. According to this configuration, the door opening/closing control system 1 of the present embodiment can extend the time required for the object 600 to reach the door 500 using the existing configuration without adding a new configuration. Since the open holding time is adjusted by using the door opening, it is possible to reduce the complexity of the device configuration and increase in device cost, while ensuring safety and reducing the chance of passersby getting caught in the door.

Specifically, the open holding time adjustment unit 200a of this embodiment receives the input of the detection result OC indicating that the object 600 has been detected from the combined sensor 300, and from the input of the detection result OC to the reception of the touch signal TS. The time required is measured, the time is defined as the time required for the object 600 to reach the door 500, and the open holding time for keeping the door 500 open is adjusted according to the required time for the object 600 to reach the door 500. When the object 600, which is a passerby, contacts the touch switch 210, a touch signal TS is output. With this, the detection result of the existing combination sensor 300 and the touch signal TS from the existing touch switch 210 are used to adjust the open holding time for keeping the door 500 open using the existing receiver 200. It is possible to realize a specific configuration that can improve the safety of the object 600, which is a passerby, while reducing the complexity and increase in device cost.

Furthermore, in this embodiment, the combination sensor 300 is used in a specified area included in a far area (detection areas D3 to D6) other than the nearby area (detection areas D1, D2) near the door 500 among the detection areas. When a passerby is detected, the detection result is output to the receiver. As a result, the object passerby 600 is detected in the designated area included in the far area, so the time required for passing can be set appropriately, the open holding time can be appropriately adjusted, and the chance of passersby getting caught in the door can be reduced. In this embodiment, more specifically, the designated area is the detection area D6 which is the farthest detection area with respect to the door 500. That is, when the entrance of the object 600 in the MV direction in the figure is detected at the farthest part of the detection area D6 shown in FIG. ), outputs the detection result OC to the receiver 200. In response to this, the receiver 200 measures the start time of the required travel time, and when the passerby 600 moves in the MV direction in the figure and performs a contact operation PS on the touch switch 210, the receiver 200 causes the touch switch 210 to When the touch signal TS is received, the end time of the required travel time is measured.

From these measured values of the start time and end time, the receiver 200 measures or calculates the time required from the input of the detection result OC to the reception of the touch signal TS, as described above, and sets the time as the target. The time required for the object 600 to reach the door 500 is defined as the time required for passage, and the open holding time for keeping the door 500 open is adjusted according to the required time for passage. As a result of the above, the required time for passing can be set more appropriately, and the opening holding time can be adjusted more appropriately.

In this embodiment, the receiver 200 adjusts the open holding time for keeping the door 500 open according to the required passing time, and when the required passing time is longer than the specified time, the receiver 200 sets the open holding time to the normal value. (hereinafter also simply referred to as extension motion). In order to make the open hold time longer than the normal value, the receiver 200 may, for example, issue the open drive command to open the motor of the open/close drive unit DD so that the assertion time is extended by a predetermined multiple. The door opening control signal DS is outputted so that the assertion time is extended by adding a predetermined value or a predetermined value. For example, the receiver 200 repeatedly outputs the assertion signal (for example, 500 msec) of the door opening control signal DS for a plurality of cycles. As a result, it is possible to reduce the chance of passersby, such as elderly people and people with disabilities, who take a long time to pass through the door getting caught in the door. Note that the above normal value is, for example, a value set at the time of shipment, and is set to 0.5 seconds in this embodiment, and the designated time is a value determined based on experimental results, actual measurement results, simulation results, etc. , is 5 seconds in this embodiment. The above-mentioned extension operation of the present embodiment is an operation that is applied only to the object 600 from when the object 600 is detected by the combination sensor 300 until it passes through the door 500, and when the combination sensor 300 is in a non-detection state. When this happens, the normal operation returns to the basic operation described above.

Note that the door controller 100, receiver 200, and combined sensor 300 may be connected in a relay communication type in a cascade as shown in the conceptual block diagram of FIG. 2, but they may not be connected in a bus communication type. It's okay. For example, CAN (Controller Area Network) communication can be used as the bus communication. In CAN communication, a node ID is assigned to each device connected on the CAN bus. When CAN communication is used, for example, the door controller 100 is used as a bus master, and the receiver 200, combined sensor 300, etc. are used as slaves (slave devices). The bus master door controller 100 manages output settings for setting the output device of a safety detection signal when closing a door and the output device of a door opening activation signal when opening a door, node IDs of slave devices, and the like. This configuration has the advantage of allowing settings to be made from a terminal device such as a smartphone instead of the previous settings using a DIP (Dual In-line Package) switch, improving the amount of information transmitted, enabling constant life-or-death monitoring, and requiring complicated wiring. This has the advantage that it is not necessary. Note that other provided sensors (not shown) are also connected to the bus such as the CAN bus.

<Operation of the door opening/closing control system of this embodiment>
Next, the operation of the door opening/closing control system of this embodiment described above will be explained using the flow diagram of FIG. 3.

When the door opening/closing control system is started (START), the touch signal TS detection process of the touch switch sensor 200 and the target object 600 detection process of the combined sensor 300 are started (step S1). Thereafter, in step S2, the combination sensor 300 notifies the touch switch sensor 200 of the detection state.

Next, it is determined whether the combined sensor 300 has detected the object (passerby) 600 (step S3). If the combined sensor 300 does not detect the object 600 (NO in step S3), the conventional detection logic while the door 500 is open, that is, the pinch prevention detection using the combined sensor 300 and the combined sensor 300 When the touch switch 210 is pressed in the non-detection state, a door opening control signal is outputted (step S4), and the process returns to step S2. Note that even when the door 500 is not in the fully closed state, in order to further improve safety, the above-mentioned change judgment (e.g., corresponding to step S6 described later) and change operation (e.g. (corresponding to steps S7 and 8 described later) may also be performed. If the combined sensor 300 detects the object 600 (YES in step S3), then it is determined whether the object (passerby) 600 has touched the touch switch 210 (step S5). If the passerby 600 does not touch the touch switch 210 (NO in step S5), the process returns to step S2. If the passerby 600 touches the touch switch 210 (YES in step S5), the process moves to step S6.

In step S6, the combination sensor 300 detects the passerby 600 in the designated area (that is, after outputting the detection result OC to the receiver 200) until the passerby 600 contacts the touch switch 210 ( That is, the time required for travel (until the touch signal TS is output from the touch switch 210 to the receiver 200) is measured, and it is determined whether the time required for travel is longer than the specified time (step S6). If the required time for passing is longer than the specified time (YES in step S6), the open holding time is made longer than the normal value (extension operation in step S7). If the travel time is not longer than the specified time (NO in step S6), the open holding time is set to the normal value (step S8). Note that when the combination sensor 300 enters a non-detection state, it returns to normal operation through interrupt processing or the like. After step S7 and step S8, the process returns to step S2 and repeats the above process.

The present invention is not limited to the above-described embodiments, and various additions, changes, or deletions can be made without departing from the gist of the present invention. Therefore, such materials are also included within the scope of the present invention.

For example, in the above embodiment, when adjusting the door open holding time, the receiver 200 measures and determines the time based on information such as detection by the combined sensor 300, but the combined sensor 300 The flow may be such that the time is measured based on the signal TS and the receiver 200 is commanded to change the door open holding time. Further, the door opening control signal DS may be output by the receiver 200 as described above, but may also be output by the combined sensor 300.

Further, the value to be adjusted according to the above-mentioned required travel time is not limited to the above-mentioned open holding time, but includes, for example, the opening/closing speed of the door 500, the detection time for detecting an object, and the sensor sensitivity of the detection element in the combined sensor 300. Other parameters such as Thereby, safety for passersby etc. can be further increased.

In addition, the end time of the above-mentioned passage time measurement is not limited to the reception of the touch signal TS as described above, but may also be determined by, for example, the detection result in the area near the door by the combined sensor 300 or the safety on the door opening/closing track. The determination may be made using the detection results of the safety sensors used.

1 Door opening/closing control system 100 Door controller (starting means)
200 Receiver (touch switch sensor)
210 Touch switch 300 Combined sensor (area sensor)
400 No eyes 500 Door 600 Object D1, D2 Detection area (nearby area)
D3-D5 Detection area (distant area)
D6 Detection area (distant area, designated area)
DS Door open control signal OC Detection result TS Touch signal

Claims (3)

a touch switch provided on the door and transmitting a touch signal upon contact or proximity of a part of the human body;
an area sensor forming a detection area that detects objects around the door based on detection waves from the objects;
a receiver that receives a touch signal from the touch switch and outputs a door opening control signal;
activating means for opening the door when receiving the door opening control signal and keeping the door open only for an open holding time;
The receiver adjusts the open holding time according to the time required for a passerby to reach the door;
The receiver receives an input of a detection result indicating that the passerby has been detected from the area sensor, measures the time required from inputting the detection result to receiving the touch signal, and calculates the time required for the passerby. the time required for a person to reach the door, and the time required for keeping the door open according to the required time;
The receiver makes the open holding time longer than a normal value when the required travel time is longer than a specified time.
Door opening/closing control system. The door opening/closing control system according to claim 1 ,
The area sensor outputs the detection result to the receiver when detecting the passerby in a designated area included in a far area other than the neighborhood area near the door in the detection area.
Door opening/closing control system. The door opening/closing control system according to claim 1 or 2 ,
The touch switch may be a mechanical switch that sends the touch signal upon contact with the part of the human body, or may detect the part of the human body in a touch detection area near the touch switch to detect the proximity of the part of the human body. an optical sensor that transmits the touch signal according to
Door opening/closing control system.

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