JP7149742B2 - Automatic door control change device and automatic door device - Google Patents

Description

The present invention relates to an automatic door control change device and an automatic door system.

A technique has been proposed for automatically adjusting the opening/closing speed and opening/closing stroke of an automatic door to optimum set values according to the environment inside and outside the automatic door without requiring the user's trouble (see Patent Document 1).

JP-A-7-18946

Depending on the environment inside and outside the automatic door, it may not be desirable to open the door. Even if it is better not to open the door, the door will still open if a passerby is present within the predetermined detection area. As a result, dust, rain, and other foreign matter on the outside of the door can pass through the door, deteriorating the environmental conditions inside the door, and causing problems such as excessive load on the motor that drives the door due to wind pressure and foreign matter. There is a risk.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above points, and provides an automatic door that prevents the door from opening unnecessarily when prediction information is obtained that the door will be in an unnecessarily open state. A control change device and an automatic door system are provided.

In order to solve the above problems, according to one aspect of the present invention, a prediction unit that predicts whether or not an automatic door will be in an unnecessary open state;
A detection area provided for detecting an object to be detected in the vicinity of the automatic door to open the automatic door when the prediction unit predicts an unnecessary open state of the automatic door. control to detect the automatic door in a reduced state compared to when the unnecessary open state of is not predicted, or control to open the automatic door based on human operation instead of detecting the object to be detected in the detection area. An automatic door control change device is provided, comprising: an area control;

Further comprising a first detection unit that detects an object to be detected near the automatic door,
The prediction unit predicts that the unnecessary open state will occur when the first detection unit does not detect the object to be detected during the period from the open state to the closed state of the automatic door. good too.

Further comprising a camera unit for photographing outside the detection area,
The prediction unit may predict that the unnecessary open state will occur when it is determined from the image captured by the camera unit that the object to be detected moving toward the automatic door does not exist. .

further comprising a second detection unit that detects at least one of snowfall and rainfall near the automatic door;
The prediction unit may predict the unnecessary open state when the second detection unit detects at least one of snowfall and rainfall.

further comprising a third detection unit that acquires environmental information near the automatic door;
The area control unit may predict the unnecessary open state based on the environment correction information weighted with weight information corresponding to the environment information detected by the third detection unit.

The environmental information may include information on at least one of temperature, humidity, atmospheric pressure, wind speed, noise, dust, pollen, particulate matter, chemical substances, and yellow sand.

The weight information includes a temperature difference between the inside and outside of the automatic door, a humidity difference between the inside and outside of the automatic door, an air pressure difference between the inside and outside of the automatic door, a wind speed outside the automatic door, a noise level outside the automatic door, and the At least an amount of dust outside the automatic door, an amount of pollen outside the automatic door, an amount of particulate matter outside the automatic door, an amount of chemical substances outside the automatic door, and an amount of yellow dust outside the automatic door It may contain the information of the value according to one.

When the unnecessary open state is detected a predetermined number of times or more within a predetermined period, the area control unit detects the detection area in a reduced state compared to a case where the detection is not performed the predetermined number of times or more. The value of the predetermined number of times may be decreased as the weight information increases.

The third detection unit includes a pair of first sensors for detecting the environmental information inside and outside the automatic door, respectively, and a second sensor for detecting the environmental information outside the door, and is commonly used inside and outside the door. and a third sensor for sensing the environmental information.

a fourth detection unit that detects the object to be detected within the detection area before detection in the reduced state;
At least one of a fourth sensor that detects that the person touches a predetermined location near the automatic door, and a fifth sensor that detects that the person manually moves the automatic door in an opening direction. and a fifth detection unit having
The area control unit changes the control to open the door based on the detection result of the fourth detection unit when the detection area is not reduced, and the area control unit changes the control to open the door based on human operation. When changing, the control may be changed to open the door based on the detection result of the fifth detection section.

a fourth detection unit that detects an object to be detected in the detection area before detection in the reduced state;
A fifth detection unit in which the detection area is larger than zero and smaller than the detectable range of the fourth detection unit,
When the detection area is not reduced, the area control unit changes control to open the automatic door based on the detection result of the fourth detection unit, and the area control unit performs detection with the detection area reduced. When changing to control, the control may be changed to open the door based on the detection result of the fifth detection section.

The area control unit makes the detectable range of the detection area the same before and after detection in the reduced state of the detection area, and when detecting in the reduced state of the detection area, a part of the detection area. , the detection of the object may be made more difficult than before detection with the detection area reduced.

The area control section may make the condition for detecting the object to be detected stricter than before the detection with the reduced detection area when the detection is performed with the detection area reduced.

The condition for detecting the object to be detected may include a result of comparing at least one of a moving speed and a moving direction of the object to be detected with a corresponding threshold value.

A notification unit may be provided for notifying that the area control unit performs detection in a reduced state of the detection area.

In one aspect of the present invention, a prediction unit that predicts whether the automatic door will be in an unnecessary open state;
Threshold control for changing a threshold value for detecting an object to be detected near the automatic door to a value that makes it more difficult to detect the object to be detected when the prediction unit predicts an unnecessary open state of the automatic door. A device for modifying control of an automatic door is provided, comprising:

The threshold control section may change the threshold to a value that makes it more difficult for the object to be detected based on the prediction of the prediction section when the door is open.

The threshold control unit predicts the prediction unit including at least one information of an air pressure difference between the inside and outside of the automatic door, a wind speed outside the automatic door, and a foreign object existing within an opening/closing operation area of the automatic door. Based on, the threshold value may be changed to a value that makes it more difficult to detect the object.

The threshold control unit may change the threshold to a value that makes it more difficult for the object to be detected, based on prediction correction information weighted with weight information according to prediction by the prediction unit.

The weight information may include at least one of traffic volume near the automatic door and the number of specific types of people present near the automatic door.

A pair of first sensors for detecting first environment information inside and outside the automatic door, a second sensor for detecting second environment information outside the door, and third environment information commonly used inside and outside the door. A detection unit including at least one of a third sensor that detects
The prediction unit may predict whether or not the automatic door will be in an unnecessary open state based on at least one of the first, second and third environment information.

In another aspect of the present invention, an automatic door sensor that detects an object to be detected within a detection area provided near a door of a building opening;
an automatic door control unit that opens the door according to the detection state of the automatic door sensor;
a prediction unit that predicts whether the automatic door control unit unnecessarily opens the door;
When the prediction unit predicts that the automatic door will be opened unnecessarily, the detection area is reduced compared to when the automatic door control unit does not predict that the door will be opened unnecessarily. and an area control unit that switches to control for opening the door based on sensing control or human operation.

According to the present invention, the door is not opened unnecessarily when the prediction information that the door will be unnecessarily opened is obtained.

1 is a block diagram showing a schematic configuration of an automatic door system according to a first embodiment; FIG. A schematic bird's-eye view of an automatic door system. 3 is a block diagram showing an example of the internal configuration of a sensor control unit according to the first embodiment; FIG. The figure which shows the installation location of the to-be-detected object sensor. 4 is a flowchart showing processing operations of a sensor control unit according to the first embodiment; The figure which shows the example of the specific notification aspect of a notification part. The figure which shows the example which notifies that the detection area of the door was reduced. The figure which shows the example which displays that it is a manual mode on a part of door. The figure which shows the example which notifies the passerby who is near a door that the detection area was reduced by an automatic voice. FIG. 8 is a block diagram showing the internal configuration of a sensor control unit according to the second embodiment; 9 is a flowchart showing processing operations of a sensor control unit according to the second embodiment;

An embodiment of the present disclosure will be described below with reference to the drawings. In the drawings attached to this specification, for the convenience of illustration and ease of understanding, the scale and the ratio of vertical and horizontal dimensions are changed and exaggerated from those of the real thing. In addition, the terms such as "parallel", "perpendicular", "same" and the like, length and angle values, etc. that specify shapes and geometric conditions and their degrees used in this specification are strictly It shall be interpreted to include the extent to which similar functions can be expected without being bound by the meaning.

(First embodiment)
FIG. 1 is a block diagram showing a schematic configuration of an automatic door system 1 according to the first embodiment, and FIG. 2 is a schematic bird's-eye view of the automatic door system 1. As shown in FIG. The automatic door system 1 of FIG. 1 includes an automatic door device 2 that automatically opens and closes a door 21 and an automatic door sensor 3 that controls the automatic door device 2 . The automatic door sensor 3 constitutes at least a part of the automatic door control change device 4 . The automatic door system 1 detects a passerby who tries to pass through the door 21 with the automatic door sensor 3, and according to the detection of the automatic door sensor 3, opens the door 21 to allow the passerby to pass.

(Automatic door device 2)
The automatic door device 2 includes a door 21 , a motor 22 and a door controller 23 . The motor 22 is supplied with power from a power source (not shown), and generates a rotational force for automatically opening and closing the door 21 . The rotational force of the motor 22 is transmitted to the door 21 as a translational force in the opening/closing direction d1 shown in FIG. 2 via power transmission members such as pulleys and timing belts (not shown). In the example of FIG. 2, the two doors 21 are draw type sliding doors. The form of the door 21 is not limited to the example of FIG. 2, and various forms of the door 21 such as a single-sliding sliding door, hinged door, folding door, glide door 21, and the like may be employed.

A door control unit 23 is connected to the motor 22 and the automatic door sensor 3 . The door control unit 23 performs drive control of the motor 22 by controlling power supply based on signals or information acquired from the automatic door sensor 3 and the motor 22 . By controlling the drive of the motor 22 , the door control unit 23 controls the drive of the door 21 . Drive control of the motor 22 is control of at least one of whether or not the motor 22 is driven, drive speed, drive torque, and rotation direction, or a combination of two or more of these.

For example, the door controller 23 receives an open signal from the automatic door sensor 3 according to detection of a passerby or an object within an effective detection area, which will be described later. The door control unit 23 performs control (hereinafter also referred to as open drive control) to drive the door 21 in the opening direction in response to the input of the open signal.

(Automatic door control change device 4)
The automatic door control change device 4 performs control to open the door 21 by detecting an object to be detected in a detection area or a predetermined location. The automatic door control change device 4 includes an automatic door sensor 3 . The automatic door control change device 4 also includes at least one of a first environment information sensor 11 , a second environment information sensor 12 , and a third environment information sensor 13 .

The automatic door sensor 3 is positioned at the center of the blind portion 24 above the door 21, more specifically above the boundary between the two fully closed doors 21, in order to detect a passerby or the like at the door 21. is provided. Note that the automatic door sensor 3 may be provided at a location other than the blind portion 24 (for example, the ceiling of the building).

As shown in FIG. 1 , the automatic door sensor 3 includes a detection section (fourth detection section) 31 and a sensor control section 32 . The sensor control section 32 is connected to the detection section 31 and the door control section 23 . Further, the sensor control unit 32 is connected to at least one of first to third environmental information sensors 11 to 13, which will be described later. The sensor control unit 32 is configured by hardware such as a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). At least part of the sensor control unit 32 may be configured by software. The detector 31 has a light emitter 311 and a light receiver 312 . Based on at least one of the first to third environment information sensors 11 to 13, the sensor control unit 32 can control the size of the detection area 5 within which the automatic door system 1 can detect a person or the like. First, the basic operation of the sensor control unit 32 will be described.

The sensor controller 32 has an effective sensing area. As shown in FIG. 2, the effective detection area is a detection area 5 that is a region on the floor surface 6 that can be detected using the automatic door sensor 3, and is set for detecting a passerby or the like at the door 21. At least part of the area of coverage.

The light projecting section 311 has a plurality of light projecting elements (not shown). The light projecting unit 311 projects or irradiates the detection area 5 with pulsed near-infrared light from each of the plurality of light projecting elements. The light receiving section 312 has a plurality of light receiving elements (not shown) that optically correspond to the plurality of light projecting elements of the light projecting section 311 . The light-receiving unit 312 receives the reflected light of the near-infrared light projected onto the detection area 5 from each of the plurality of light-projecting elements of the light-projecting unit 311 by each of the plurality of light-receiving elements. Detects the amount of reflected light from the outside. The light receiving unit 312 outputs the detected amount of received light to the sensor control unit 32 as a detection signal having a signal value corresponding to the amount of received light. Note that the light projecting unit 311 and the light receiving unit 312 may project and receive light in a frequency band other than near-infrared light, that is, electromagnetic waves.

In the example of FIG. 2, the detection area 5 is composed of a plurality of small detection areas 51 arranged in front of the two doors 21 at intervals in the opening/closing direction d1 of the door 21 and in the front-rear direction d2 orthogonal thereto. ing. In the example of FIG. 2, there are a total of 72 small detection areas 51 of 6 rows×12. The number, size, and specific arrangement of the small detection areas 51 are arbitrary.

Each small detection area 51 corresponds to an irradiation spot of near-infrared light projected from each of the plurality of light projecting elements of the light projecting section 311 and received by each of the plurality of light receiving elements of the light receiving section 312. .

The effective detection area in the example of FIG. 2 is composed of at least one small detection area 51 out of a plurality of small detection areas 51 . In addition, in the example of FIG. 2, each small detection area 51 has a circular shape. In this case, the diameter of the small detection area 51 on the floor surface 6 can be set to any value between 10 cm and 30 cm, for example. The small detection area 51 may have a shape other than a circular shape, such as an elliptical shape, a rectangular shape, and a polygonal shape.

There is no particular limitation on which of the plurality of small detection areas 51 is set as the effective detection area. For example, the effective detection area may be set in advance before the automatic door system 1 is started to be used. Also, the effective detection area may be variable according to the position of the door 21 or the like.

The sensor control unit 32 causes all the light projecting elements of the light projecting unit 311 to project near-infrared light toward the corresponding small detection areas 51 . All light-receiving elements of the light-receiving section 312 receive the reflected near-infrared light from each small detection area 51 respectively. Then, the sensor control section 32 extracts the detection signal for the effective detection area from the detection signals for each of the small detection areas 51 input from the light receiving section 312 . Then, the sensor control unit 32 performs opening/closing control of the door 21 based on the detection signal of the extracted effective detection area.

For example, the sensor control unit 32 stores, as a reference value, the signal value (that is, the amount of light received) of the detection signal in the effective detection area immediately after the power of the automatic door system 1 is turned on. An object to be detected such as a passerby may be detected based on this. When a passerby in the effective detection area is detected, the sensor control unit 32 outputs an open signal to the door control unit 23 of the automatic door device 2, thereby controlling the detection result in the effective detection area to open the door 21. used for

Further, the sensor control unit 32 acquires a position signal indicating the position of the door 21 from the motor 22, grasps the position of the door 21 based on the acquired position signal, and performs opening/closing control of the door 21 based on the position of the door 21. You can change the algorithm. A specific aspect of the position signal is not particularly limited as long as the position of the door 21 can be detected. For example, the position signal is generated based on the phase of the Hall element of motor 22 . The position signal may be a signal based on a rotary encoder for detecting rotation of the motor 22 or a linear encoder provided for detecting the open/closed position of the door 21 . Further, the information may be obtained through the door control section 23 instead of directly from the motor 22 .

Instead of causing all the light projecting elements of the light projecting section 311 to project near-infrared light, the sensor control section 32 may cause only the light projecting elements corresponding to the effective detection area to project light. In this case, all of the small detection areas 51 onto which the near-infrared light is projected become effective detection areas. Power consumption can be reduced by causing only the light projecting elements corresponding to the effective detection area to project light. Also, the life of the light projecting element can be lengthened.

Next, a characteristic operation of the sensor control section 32 will be described. First, the first to third environment information sensors 11 to 13 (the third detector, the first to third sensors) will be explained. At least one of the first to third environmental information sensors 11 to 13 should be provided.

A first environment information sensor (first sensor) 11 detects environment information inside a building in which a door 21 is installed, for example. A second environmental information sensor (second sensor) 12 detects environmental information outside the building where the door 21 is installed, for example. When the door 21 is installed in a place separating the first space and the second space in the building, the first environment information sensor 11 detects the environment information on the side of the first space, and the second environment information sensor 12 detects Environmental information on the second space side is detected. The specific contents of the environmental information detected by the first environmental information sensor 11 and the second environmental information sensor 12 are not limited, but examples include temperature, humidity, atmospheric pressure, and noise. Each of the first environmental information sensor 11 and the second environmental information sensor 12 may be composed of a plurality of environmental information detection units that detect a plurality of types of environmental information.

A third environment information sensor (third sensor) 13 detects environment information common to the inside and outside of the building or the above-described first and second spaces. For example, the environmental information detected by the third environmental information sensor 13 is wind speed, air pressure, noise, traffic volume, and the like. When detecting the amount of traffic as environmental information, the third environmental information sensor 13 may be an imaging sensor. When the third environment information sensor 13 is an imaging sensor, the third environment information sensor 13 may perform processing for analyzing the captured image, or the sensor control unit 32 may perform this image analysis processing.

The installation locations of the first to third environment information sensors 11 to 13 are not particularly limited. is installed near the blind portion 24 on the outside of the door 21 . The third environmental information sensor 13 may be installed inside or outside the door 21 .

The sensor control unit 32 can detect the difference in environmental information between the inside and outside of the door 21 by comparing the detection data of the first environment information sensor 11 and the detection data of the second environment information sensor 12 . For example, the sensor control unit 32 can detect the temperature difference, the humidity difference, the atmospheric pressure difference, etc. between the inside and outside of the door 21 by comparing the detection data of the first environment information sensor 11 and the detection data of the second environment information sensor 12 . Further, the sensor control unit 32 can detect environment information common to the inside and outside of the door 21 based on the detection data of the third environment information sensor 13 . For example, the sensor control unit 32 can detect the noise around the door 21, the wind pressure applied to the door 21, the amount of traffic outside the door 21, and the like based on the detection data of the third environment information sensor 13. FIG.

FIG. 3 is a block diagram showing an example of the internal configuration of the sensor control section 32 according to the first embodiment. The sensor control unit 32 in FIG. 3 has an environment information acquisition unit 33 , a prediction unit 34 , an area control unit 35 and an opening/closing control unit (drive control unit) 36 . At least one of the first to third environment information sensors 11 to 13 is connected to the sensor control section 32 .

The environment information acquisition unit 33 acquires environment information detected by at least one of the first to third environment information sensors 11 to 13 . As will be described later, environmental information may be obtained from various sensors and detectors other than the first to third environmental information sensors 11-13. The prediction unit 34 predicts whether the door 21 will be in an unnecessary open state based on the environment information acquired by the environment information acquisition unit 33 . Here, the unnecessary open state of the door 21 refers to a state in which the door 21 is open even though it is unnecessary to open the door 21 .

The environment information acquisition unit 33 may acquire detection information from a first detection unit 44 that detects an object to be detected near the door 21 separately from the first to third environment information sensors 11 to 13 . Further, the environment information acquisition section 33 may acquire detection information from a second detection section 46 that detects at least one of snowfall and rainfall near the door 21 . Further, the environment information acquisition section 33 may acquire detection information from the third detection section 47 that acquires environment information in the vicinity of the door 21 . The third detection unit 47 may include the first to third environment information sensors 11 to 13 described above, or may be provided separately from the first to third environment information sensors 11 to 13. Further, the environment information acquisition section 33 may acquire detection information from the fourth detection section 48 that detects an object to be detected within the detection area before the detection area is reduced. The environmental information acquisition unit 33 also includes a fourth sensor 49a for detecting that a person has touched a predetermined location near the door 21, and a fifth sensor 49a for detecting that a person has manually moved the door 21 in the opening direction. Detection information may be acquired from the fifth detection unit 49 having at least one of the sensor 49b.

The prediction unit 34 predicts that the door 21 will be in an unnecessary open state when the detection unit 31 does not detect an object to be detected near the door 21 during the period from the open state to the closed state of the door 21 . (hereinafter referred to as first prediction). Detection of an object to be detected near the door 21 may be performed by the detection unit 31, or may be performed by a sensor separate from the detection unit 31 (for example, an auxiliary sensor 41 for detecting an obstacle in a direction crossing the door 21 (to be described later). 4), an imaging sensor for imaging the vicinity of the doorway, the camera unit 45, etc.), or at least one of the first detection unit 44 to the fifth detection unit 49 described above. For example, the prediction unit 34 predicts an unnecessary open state when the first detection unit 44 does not detect the object to be detected while the door 21 is in the open state to the closed state. good too.

Here, the unnecessary open state of the door 21 includes not only the state in which the door 21 is open, but also the state in which the door 21 is once about to close and then reverses in the opening direction. For example, when the detection unit 31 detects an object to be detected while the door 21 is about to close, a reversal operation occurs. It is inherently unnecessary to operate or maintain the door 21 in the open state even though there is no person passing through the door 21, and cold air or warm air from the outside of the door 21 may enter the inside of the door 21 and weaken the cooling and heating effect. , the above-described first prediction may be used because problems such as dust, insects, snow, rain, etc. entering from the outside of the door 21 may occur.

Further, the prediction unit 34 may predict that an unnecessary open state will occur when there is no person moving toward the door 21 in the image captured by the camera unit 45 that captures an image outside the detection area 5 . More specifically, the prediction unit 34 predicts the unnecessary open state of the door 21 when there is no person moving toward the door 21 in the captured image of the camera unit 45 capturing the outside of the detection area 5 . It may be predicted that it will be (hereinafter referred to as second prediction). The camera unit 45 that captures images outside the detection area 5 may be the above-described third environment information sensor 13 or may be provided separately from the third environment information sensor 13 . It is essentially unnecessary to operate or maintain the door 21 in the open state even though there is no person moving toward the door 21, and it causes the above-described inconvenience. You may

Furthermore, the prediction unit 34 may predict that the door 21 will be in an unnecessary open state when at least one of snowfall and rainfall is detected by the second detection unit 46 (hereinafter, third prediction). The second environment information sensor 12 and the third environment information sensor 13 may detect the presence or absence of snowfall or rainfall. If the door 21 is unnecessarily operated or kept open during snowfall or rain, the inside of the door 21 may be flooded with snow or rain. good.

Further, the prediction unit 34 predicts whether or not the door 21 will be in an unnecessary open state based on environmental correction information obtained by weighting various environmental information around the door 21 with weight information corresponding to the environmental information. (hereinafter referred to as fourth prediction). Environmental information is detected by at least one of the first to third environmental information sensors 11 to 13 described above. The environment correction information is calculated, for example, by multiplying the value of the environment information by the value of the corresponding weight information. The environmental information may include at least one information of temperature, humidity, atmospheric pressure, wind speed, noise, dust, pollen, particulate matter such as PM2.5, chemical substances, and yellow sand. Also, the weight information may be a value corresponding to the type of environment information. Alternatively, the weight information may be a value according to the value of the environment information. For example, the weight information may include value information corresponding to at least one of the wind speed outside the door 21, the noise level, the amount of dust, the amount of pollen, the amount of chemical substances, and the amount of yellow sand. If the door 21 is unnecessarily operated or kept open when the environmental information inside and outside the door 21 is greatly different, the cooling and heating effect inside the door 21 is weakened and the environmental conditions of the space inside the door 21 are deteriorated. Since problems such as the above occur, the above-described fourth prediction may be performed.

The area control unit 35 detects an object to be detected near the door 21 to open the door 21 when the prediction unit 34 predicts that the door 21 is in an unnecessary open state. The door control unit 23 detects the door 21 in a reduced state as compared to when it is not predicted that the door 21 will be in an unnecessary open state, or the door 21 is based on human operation instead of detecting an object to be detected in the detection area. to open control. Here, detection with a reduced detection area means that the detection area itself that can be detected by the automatic door sensor 3 may be reduced, or the detection area itself that can be detected by the automatic door sensor 3 may be reduced without reducing it. The automatic door control unit 23 performs control to open the door 21 when an object to be detected exists in a reduced area within the detection area and to ignore the existence of the object to be detected in the detection area outside the reduced area. may go. Hereinafter, "detecting with a reduced detection area" may be abbreviated as "reducing the detection area". In this specification, the case where the area control unit 35 switches to control to open the door 21 based on a human operation is included as an example of reducing the detection area.

More specifically, the area control unit 35 may reduce the detection area 5 when the prediction unit 34 predicts that the door 21 will be unnecessarily opened more than a predetermined number of times within a predetermined period. Further, when the prediction unit 34 predicts an unnecessary open state based on the environment correction information obtained by weighting the environment information with the weight information, the area control unit 35 increases the value of the predetermined number of times as the value of the weight information increases. You can make it smaller. That is, when the value of the weight information is large, it can be determined that the importance of the corresponding environmental information is high, so the detection area 5 may be reduced with a small number of predictions. Also, a plurality of pieces of environment information may be prioritized, and the value of weight information corresponding to environment information having a high priority may be increased.

A first example of reducing the detection area 5 is to narrow the range (effective detection area) for detecting whether or not there is an object to be detected. This first example can be realized by narrowing the range in which the near-infrared light is projected from the light projection section 311 in the detection section 31 . Alternatively, the number of light receiving elements that receive light in the light receiving unit 312 may be reduced without changing the light projection range of the light projecting unit 311 . Alternatively, another sensor that detects an object within a narrow range may be provided separately from the light projecting unit 311 and the light receiving unit 312 in FIG.

A second example of reducing the detection area 5 does not change the range for detecting whether or not the object exists, but tightens the conditions for determining that the object exists for at least a part of the range. That is. Making the conditions stricter means, for example, increasing the threshold when performing processing for determining that an object to be detected exists when the amount of light received by the light receiving unit 312 exceeds the threshold. By increasing the threshold value, it becomes difficult to detect the object to be detected, which is equivalent to substantially reducing the detection area 5 . A part of the detection area 5 may not be detected at all. This second example can be realized by changing the threshold setting of the light receiving section 312 in the detecting section 31, for example. The condition for determining that an object exists may be determined based on whether or not at least one of the moving speed and moving direction of the object exceeds a threshold value. In this case, tightening the conditions can be considered narrowing the permissible range of at least one of the moving speed and the moving direction of the object to be detected. For example, it can be determined that the object exists only when the moving speed of the object is slower, or the object exists only when the moving direction of the object is closer to the center of the door. Conceivable.

A third example of reduction of the detection area 5 is a sensor other than the light receiving unit 312 that has detected the object to be detected before the detection area 5 is reduced (hereinafter referred to as the object sensor or the fifth detection unit 49). ) is used to detect the object to be detected. This detected object sensor detects the detected object in a range narrower than the range in which the light receiving section 312 detects the detected object. As shown in FIG. 4, the object sensor may be a sensor (also called an auxiliary sensor) 41 that projects and receives infrared light or the like in a direction across the door 21 at a predetermined height from the installation surface of the door 21 . Further, the object sensor to be detected may be a touch sensor 38 attached to a predetermined portion of the door 21, as shown in FIG. The touch sensor 38 may be a contact sensor touched by a passerby passing through the door 21 or a non-contact sensor touched by a passerby passing through the door 21 with a hand or the like. In the case of the contact sensor, the detection area 5 is zero because the door 21 does not open unless the passerby touches it. In the case of a non-contact sensor, the detection area 5 is not zero, but the detectable range is narrower than the detection area 5 of the light projecting unit 311 and the light receiving unit 312 in FIG. As described above, the touch sensor 38 includes contact sensors and non-contact sensors. Therefore, in this specification, the case where the passerby directly touches the touch sensor 38 and the case where the passerby touches the touch sensor 38 with a part of the body are used. It is called a touch, including the case of holding the .

In this third example, a fourth detection unit 48 that detects an object to be detected within the detection area before shrinking, a fourth sensor 49a that detects that a person touches a predetermined location near the door 21, and a human can be realized by providing a fifth detector 49 having at least one of a fifth sensor 49b for detecting that the door 21 has been manually moved in the opening direction. In this case, the area control unit 35 changes the control to open the door based on the detection result of the fourth detection unit 48 in a state where the detection area is not reduced, and the area control unit 35 controls the opening of the door based on human operation. , the control is changed to open the door based on the detection result of the fifth detection unit 49 .

Alternatively, in the second example described above, the fourth detection unit 48 detects the object to be detected within the detection area before reduction, and the detection area is larger than zero and smaller than the detectable range of the fourth detection unit 48. It can also be realized by providing the fifth detection unit 49 . In this case, the area control unit 35 changes the control to open the door 21 based on the detection result of the fourth detection unit 48 when the detection area is not reduced, and the area control unit 35 changes the control to reduce the detection area. In that case, the control is changed to open the door based on the detection result of the fifth detection unit 49 . The area control unit 35 sets the detectable range of the detection area to be the same before and after the detection area is reduced. may be difficult to detect. Alternatively, when reducing the detection area, the area control unit 35 may make the conditions for detecting the object to be detected stricter than before reducing the detection area. The condition for detecting the object to be detected may include a result of comparing at least one of the moving speed and the moving direction of the object to be detected with a corresponding threshold value.

One specific example of zero sensing area 5 is touch sensor 38 , but not necessarily touch sensor 38 . The door 21 may be switched from automatic mode to manual mode and the passerby may move the door 21 himself. In this case, it is possible to detect that a passerby has applied a force to move the door 21 and perform an assist operation to drive the motor. As a result, the passerby can manually open the door 21 with a slight force, and the burden on the passerby can be reduced. In this way, the assist operation means that the driving force of the motor 22 bears part of the power required for a person to manually move the door 21 .

When the area control unit 35 reduces the detection area 5, the process of detecting the object to be detected in the detection area 5 before reduction may be continued. That is, although the opening/closing control of the door 21 is performed only when an object to be detected exists in the detection area 5 after reduction, the presence or absence of the object to be detected in the detection area 5 before reduction may be continuously performed. . As a result, even after the detection area 5 is reduced, the process of detecting the presence or absence of a passerby approaching the door 21 and the amount of traffic around the door 21 can be continued.

Alternatively, after the area control unit 35 reduces the detection area 5, the detection of the presence or absence of the object to be detected is completely switched to another detection means (for example, the touch sensor 38), and the detection unit 31 detects the object to be detected. detection processing may be stopped. As a result, control of the automatic door system 1 can be simplified, and power consumption can be reduced.

The opening/closing control unit 36 generates an open signal or a close signal according to whether or not an object to be detected is detected within the detection area 5 controlled by the area control unit 35, and controls the generated open signal or close signal. It is transmitted to the unit 23 .

FIG. 5 is a flow chart showing the processing operation of the sensor control section 32 according to the first embodiment. This flow chart continues while the power of the automatic door system 1 is on. First, the environment information acquisition unit 33 acquires environment information around the door 21 (step S1). The environment information acquisition unit 33 acquires environment information using at least one of the first to third environment information sensors 11 to 13 .

Next, it is determined whether or not to weight the acquired environment information (step S2). Weighting is required depending on the environmental information, but not all environmental information necessarily requires weighting. Therefore, in step S2, it is determined whether weighting is to be performed.

If it is determined in step S2 that weighting is to be performed, weight information corresponding to the environment information is acquired, and environment correction information is generated by weighting the environment information using the acquired weight information (step S3). Since the weight information may differ depending on the value of the environment information, the correspondence relationship between the value of the environment information and the value of the weight information is registered in advance in a table, and the weight information is obtained by referring to this table. may be obtained.

When the process of step S3 is completed, or when it is determined in step S2 that the environmental information is not weighted, the prediction unit 34 determines whether or not it has predicted that an unnecessary open state will occur (step S4). For example, the prediction unit 34 predicts whether or not the door 21 will be in an unnecessary open state based on the first to third environment information sensors 11 to 13 .

In step S4, if the prediction unit 34 predicts that the unnecessary open state will occur, it is determined whether or not the prediction unit 34 has predicted that the unnecessary open state will occur more than a predetermined number of times within a predetermined time (step S5). . The predetermined number of times may be one time, or may be two or more predetermined times. When the predetermined number of times is reached within the predetermined time, the area control section 35 reduces the detection area 5 (step S6). Next, an open signal or a closed signal is generated according to whether or not the detection unit 31 has detected an object to be detected within the reduced detection area 5 (step S7). This open signal or close signal is transmitted to the door control section 23 .

If it is determined in step S4 that the prediction unit 34 did not predict that an unnecessary open state will occur, or if the prediction unit 34 predicts an unnecessary open state less than a predetermined number of times within a predetermined time period, , the detection area 5 is initialized (step S8). Initialization of the detection area 5 means that the detection area 5 is not reduced, and the detection area 5 is set to a range assumed in advance as a range in which the detection unit 31 detects an object to be detected. Next, in step S7, an open signal or close signal is generated depending on whether or not the detection unit 31 has detected an object to be detected within the initialized detection area 5 .

When reducing the detection area 5 in step S5 of FIG. 5, the passerby at the door 21 may be notified that the detection area 5 has been reduced. In this case, a notification unit 37 is connected to the sensor control unit 32 as indicated by the broken line in FIG. The notification unit 37 notifies that the area control unit 35 has reduced the detection area 5 .

FIG. 6A is a diagram showing an example of a specific notification mode of the notification unit 37. FIG. 6A and 6B change the display mode around the touch sensor 38 to notify the passerby that the touch sensor 38 has been activated. FIG. 6A shows an example of attaching an LED to the touch sensor 38 and blinking or lighting the LED. The arrangement location and lighting/blinking mode of the LEDs are arbitrary. FIG. 6B shows an example of notifying that the detection area 5 of the door 21 has been reduced by, for example, lighting or blinking part of the door 21 . In the case of FIG. 6B, when the mode is switched to the manual mode in which the door 21 is manually opened instead of the touch sensor 38, the passerby can be notified of this fact. For example, the part to be held by the passerby is lit or blinked so that the passerby can recognize that the mode has been switched to the manual mode.

FIG. 6C shows an example in which the manual mode is displayed on a part of the door 21 in order to notify passers-by that the door 21 has switched from the automatic mode to the manual mode. In the example of FIG. 6C, a display section 42 is provided on a part of or the entire surface of the door 21, and the display section 42 indicates that the manual mode is set. FIG. 6D shows an example in which a speaker 43 for outputting sound is provided, and an automatic sound notifies a passerby near the door 21 that the detection area 5 has been reduced. As described above, various notification modes of the notification unit 37 are conceivable, and any notification mode may be adopted.

Thus, in the first embodiment, it is determined whether or not the prediction unit 34 has predicted that the door 21 will be in an unnecessary open state, and if it is predicted, the detection area 5 is reduced. Therefore, when it is predicted that it is not desirable to open the door 21, the detection area 5 can be reduced in advance, and the problem of the door 21 being unintentionally opened can be prevented.

According to this embodiment, for example, when there is a large temperature difference or humidity difference between the inside and outside of the door 21, when the wind speed outside the door 21 is strong or the noise is large, or when the air outside the door 21 is bad due to dust or the like. For example, it is possible to control the opening of the door 21 as little as possible, thereby preventing deterioration of the environmental conditions inside the door 21 . In addition, since the door 21 is not opened unnecessarily, it is possible to prevent the motor 22 from being overloaded when moving the door 21 due to strong winds or foreign objects. Furthermore, when the amount of traffic outside the door 21 is small, it can be determined that the number of passers-by passing through the door 21 is also small, so control can be performed so that the door 21 is not opened as much as possible.

(Second embodiment)
In the second embodiment, when the prediction unit 34 predicts that the door 21 will be in an unnecessary open state, the threshold value for stopping or opening the door 21 is increased.

The automatic door system 1 according to the second embodiment has the same block configuration as in FIG. 1, but the internal configuration of the sensor control section 32 is different from that in FIG. FIG. 7 is a block diagram showing the internal configuration of the sensor control section 32 according to the second embodiment. The sensor control unit 32 in FIG. 7 has an environment information acquisition unit 33 , a prediction unit 34 , a threshold control unit 39 and an opening/closing control unit 36 . Thus, the sensor control section 32 of FIG. 7 has a threshold control section 39 instead of the area control section 35 of FIG. 3 may be added to the sensor control unit 32 of FIG. 7, and the threshold value control unit 39 of FIG. 7 may be added to the sensor control unit 32 of FIG.

The prediction unit 34 predicts whether or not the door 21 will be unnecessarily opened based on the environment information acquired by the environment information acquisition unit 33, as in the first embodiment. is slightly different from the first embodiment.

The prediction unit 34 of the present embodiment, when it is necessary to increase the threshold value that is the criterion for determining whether to stop the door 21 with the door 21 open or to open the closed door 21 , the unnecessary Predict that it will be open. For example, the prediction unit 34 of the present embodiment may determine the unnecessary air pressure difference based on at least one of the information of the air pressure difference between the inside and outside of the door 21, the wind speed outside the door 21, and foreign matter existing within the opening/closing operation area of the door 21. You may predict whether it will be in an open state.

At least one of the first to third environment information sensors (first to third sensors) 11 to 13 is connected to the sensor control unit 32, as in the first embodiment. For example, if the first and second environmental information sensors 11 and 12 are used, it is conceivable that these sensors detect the air pressure and wind speed inside and outside the door 21 . Further, when the third environment information sensor 13 is used commonly for the inside and outside of the door 21, a sensor for detecting the wind speed or the wind pressure hitting the door 21 may be used, or a foreign object existing on the moving path of the door 21 may be detected. A sensing imaging sensor may be used. Based on the environment information detected by at least one of the first to third environment information sensors 11 to 13, the prediction unit 34 predicts whether the door 21 will be in an unnecessary open state.

The threshold control unit 39 increases the threshold for driving the door 21 in the direction of stopping or opening when the prediction unit 34 predicts that the door 21 will be in an unnecessary open state. For example, when the door 21 is open, the threshold control unit 39 may change the threshold to a value that makes it more difficult for the object to be detected based on the prediction of the prediction unit 34 . More specifically, the threshold controller 39 may control the threshold based on the drive torque of the motor that drives the door 21 , the operating state of the door 21 , and the prediction result of the prediction section 34 . Further, the threshold control unit 39 may increase the threshold when the prediction unit 34 predicts that the door 21 will be in an unnecessary open state more than a predetermined number of times within a predetermined period. This is because the prediction unit 34 may erroneously predict that an unnecessary open state will occur. This is because the prediction accuracy of the unnecessary open state of the door 21 by 34 can be improved.

When the prediction unit 34 predicts that the door 21 will be in an unnecessary open state, the degree to which the threshold value is raised may be switched in a plurality of stages. For example, the threshold control unit 39 is based on the prediction of the prediction unit including at least one information of the difference in air pressure between the inside and outside of the automatic door, the wind speed outside the automatic door, and foreign matter existing within the opening/closing operation area of the automatic door. It may be changed so as to make it difficult to detect the object to be detected. Also, the threshold control unit 39 may switch the extent to which the threshold is raised according to the magnitude of the wind speed or air pressure. Alternatively, the extent to which the threshold is raised may be switched according to the size and type of the detected foreign matter. Alternatively, the extent to which the threshold is raised may be switched according to the number of times the prediction unit 34 predicts that the door 21 will be in an unnecessary open state. For example, the threshold may be increased as the number of detections of a foreign object increases.

Also, the threshold may be weighted by weight information. The weight information may be adjusted according to at least one of the amount of traffic near the automatic door 21 and the number of specific types of people present near the automatic door 21 . A specific type of human being is, for example, the elderly or the disabled. When an elderly person or a handicapped person exists outside the door 21, the weight information is increased to increase the threshold, thereby preventing an accident in which the elderly person or the handicapped person is caught in the closing door 21.例文帳に追加In this case, the threshold control unit 39 may change the threshold so that it becomes difficult to detect the object based on the prediction correction information weighted with the weight information according to the prediction of the prediction unit 34 .

Further, the threshold control unit 39 may control the threshold based on the driving torque of the motor 22 that generates the driving force for opening and closing the door 21, the operation status of the door 21, and the prediction result of the prediction unit 34. good. For example, if the wind pressure that presses the door 21 is strong or if there is a foreign object on the movement path, the drive torque for moving the door 21 will be larger than usual. A larger threshold may be used.

FIG. 8 is a flow chart showing the processing operation of the sensor control section 32 according to the second embodiment. This flowchart continues while the power of the automatic door system 1 is on, as in FIG. Steps S11 to S15 are the same processes as steps S1 to S5 in FIG. If the prediction unit 34 predicts that the door 21 will be opened unnecessarily, it is determined whether or not the prediction unit 34 has predicted that the door 21 will be unnecessarily opened more than a predetermined number of times within a predetermined time (step S15). . If the predetermined number of times is reached within the predetermined time, the threshold is increased (step S16). Note that the predetermined number of times may be one, or a predetermined number of times of two or more.

When the prediction unit 34 does not predict that the door 21 will be opened unnecessarily in step S14, or when the prediction unit 34 predicts that the door 21 will be unnecessarily opened less than a predetermined number of times within a predetermined time. , the same processing as steps S7 and S8 in FIG. 5 is performed without changing the threshold value (steps S17 and S18). The sensor control unit 32 compares the detection data from the detection unit 31 with the threshold increased in step S16 or the original threshold, and transmits an open signal or close signal to the door control unit 23 .

For example, when the wind outside the door 21 is strong, outside air including dust, wind and rain, etc. is likely to enter the door 21, and a large wind pressure is applied to the door 21, making it difficult to move the door 21.例文帳に追加Therefore, in this case, the threshold value is increased to prevent the door 21 from being opened as much as possible. In addition, if foreign matter exists around the door 21, the foreign matter may be blown away by the wind or the like and enter the inside of the door 21, or the foreign matter may be caught in the movement path of the door 21 and hinder the movement of the door 21. When a foreign object is detected around the door 21, the threshold value may be increased to prevent the door 21 from being opened as much as possible. More specifically, if the foreign matter is mud, ice, or snow, and it is found that the foreign matter exists on the moving path of the door 21, the threshold value is increased to prevent the foreign matter from entering the inside of the door 21. good. On the other hand, if the foreign object is a rigid body such as a pachinko ball, the door 21 is stopped without increasing the threshold value and the door 21 is switched to the manual mode when it is found that the foreign object exists on the moving path of the door 21. good too.

As described above, in the second embodiment, when the predicting unit 34 predicts that the door 21 will be in an unnecessary open state, the threshold for stopping or opening the door 21 is increased. When it is not desirable to open the door 21, control can be performed so that the door 21 is not opened as much as possible, thereby preventing the trouble of entering the inside of the door 21 by a foreign matter.

Aspects of the present invention are not limited to the individual embodiments described above, but include various modifications that can be conceived by those skilled in the art, and the effects of the present invention are not limited to the above-described contents. That is, various additions, changes, and partial deletions are possible without departing from the conceptual idea and spirit of the present invention derived from the content defined in the claims and equivalents thereof.

1 automatic door system, 2 automatic door device, 3 automatic door sensor, 4 automatic door control change device, 5 detector, 11 first environment information sensor, 12 second environment information sensor, 13 third environment information sensor, 21 door, 22 motor, 23 door control section, 24 blind section, 31 detection section, 32 sensor control section, 33 environment information acquisition section, 34 prediction section, 36 threshold control section, 37 notification section, 38 touch sensor, 39 threshold control section, 41 auxiliary sensor, 42 display unit, 43 speaker, 51 small detection area, 311 light projecting unit, 312 light receiving unit

Claims (7)

a prediction unit that predicts whether the automatic door will be in an unnecessary open state;
The prediction unit predicts an unnecessary open state of the automatic door, and when the unnecessary open state is detected a predetermined number of times or more within a predetermined period, an object to be detected near the automatic door is detected. an area control unit for changing the size of the detection area provided for opening the automatic door to control to perform detection in a reduced state compared to the case where detection is not performed more than the predetermined number of times ;
An environmental information detection unit that acquires at least one environmental information of temperature, humidity, atmospheric pressure, wind speed, noise, dust, pollen, particulate matter, chemical substances, and yellow sand near the automatic door,
The prediction unit detects a temperature difference between the inside and outside of the automatic door, a humidity difference between the inside and outside of the automatic door, an air pressure difference between the inside and outside of the automatic door, and a temperature difference between the inside and outside of the automatic door according to the environment information detected by the environment information detection unit. Wind speed outside, noise level outside the automatic door, amount of dust outside the automatic door, amount of pollen outside the automatic door, amount of particulate matter outside the automatic door, chemicals outside the automatic door Predicting the unnecessary open state based on environmental correction information weighted by at least one weight information of the amount and the amount of yellow dust outside the automatic door,
The area control unit reduces the value of the predetermined number of times as the weight information increases.
Automatic door control change device. Further comprising a first detection unit that detects an object to be detected near the automatic door,
The prediction unit predicts that the unnecessary open state will occur when the first detection unit does not detect the object to be detected during the period from the open state to the closed state of the automatic door. 2. The automatic door control change device according to claim 1. Further comprising a camera unit for photographing outside the detection area,
2. The predicting unit predicts that the unnecessary open state will occur when it is determined from the image captured by the camera unit that the object to be detected moving toward the automatic door does not exist. 3. The automatic door control change device according to 1 or 2. further comprising a second detection unit that detects at least one of snowfall and rainfall near the automatic door;
4. The predicting unit according to any one of claims 1 to 3, wherein the predicting unit predicts the unnecessary open state when the second detecting unit detects at least one of snowfall and rainfall. Automatic door control change device. The environment information detection unit includes a pair of first sensors for detecting the environment information inside and outside the automatic door, a second sensor for detecting the environment information outside the automatic door, and a common sensor for inside and outside the automatic door. 5. The automatic door control change device according to any one of claims 1 to 4, comprising at least one of: 6. The automatic door control change device according to claim 1, further comprising a notification unit for notifying that said area control unit performs detection in a reduced state of said detection area. An automatic door sensor that detects objects within a detection area provided near the door of a building opening;
an automatic door control unit that opens an automatic door according to the detection state of the automatic door sensor;
a prediction unit that predicts whether the automatic door control unit unnecessarily opens the automatic door;
When the prediction unit predicts an unnecessary open state of the automatic door, and the unnecessary open state is detected a predetermined number of times or more within a predetermined period, the size of the detection area is set to the predetermined number of times or more. an area control unit that switches to control for detection in a reduced state compared to the case where it is not detected;
An environmental information detection unit that acquires at least one environmental information of temperature, humidity, atmospheric pressure, wind speed, noise, dust, pollen, particulate matter, chemical substances, and yellow sand near the automatic door,
The prediction unit detects a temperature difference between the inside and outside of the automatic door, a humidity difference between the inside and outside of the automatic door, an air pressure difference between the inside and outside of the automatic door, and a temperature difference between the inside and outside of the automatic door according to the environment information detected by the environment information detection unit. Wind speed outside, noise level outside the automatic door, amount of dust outside the automatic door, amount of pollen outside the automatic door, amount of particulate matter outside the automatic door, chemicals outside the automatic door Predicting the unnecessary open state based on environmental correction information weighted by at least one weight information of the amount and the amount of yellow dust outside the automatic door,
The area control unit reduces the value of the predetermined number of times as the weight information increases.
Automatic door device.

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