JP2017218891A - Automatic revolving door and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic revolving door which largely alleviates an impact force by quickly stopping a rotary vane when any of danger detection sensors detects that a tip of the rotary vane intrudes into a dangerous region when a passenger and a substance pass the dangerous region, can secure the evacuation of the passenger and the substance, and is high in safety, and its operation control method.SOLUTION: An automatic revolving door is constituted of: fixed frames 800, 801; rotary vanes 900, 901; rotary vane drive units 100, 102; a detection device 101 for detecting a rotation position; and a control device 200 for rotating the automatic revolving door at a low speed when a rotary vane blade tip enters dangerous regions (AB zone, DE zone), and at an acceleration, deceleration and constant speed when the rotary vane blade tip passes from the dangerous regions.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technical field of an automatic revolving door installed at a doorway of a building.

Automatic revolving doors look beautiful and are often used in public places such as hotels and restaurants. According to the regulations written in China Building Industry Standard No. JG / T177-2005 "Automatic Door", the automatic revolving door is a fixed frame and rotating blades with 2 to 4 door blades rotating around the central axis by signal control It is a revolving door including. The fixed frame is a fixed portion whose outer periphery has an arc shape.
In China, pedestrian right-hand traffic is customary. Therefore, it is written in China Building Industry Standard No. JG / T177-2005 “Automatic Door” that the automatic revolving door rotates counterclockwise. The standard specifies a number of terminology.
“Right standing: Standing out of the door of the revolving door, facing the revolving door and standing on the right. ]

  When the tip of the rotor blade enters the danger zone, if a passer-by passes through the danger zone, there is a risk that a fatal accident may occur due to being caught between the rotor blades to the right. In order to prevent a passerby from being caught by a revolving door, various countermeasures have been proposed in the prior art. Among them, “a sensor is provided in the dangerous area, and when the sensor detects, the control device stops the rotor blade until the detection state of the sensor disappears. ”And Chinese practical new-type patent 2010202733737.8 (Patent Document 1). "When the structure of the rotary wing is improved and a passerby is caught, a device called an automatic slide-back part of the rotary wing reduces the pinching force against the passerby" There is also 2). The above-mentioned practical new model can reduce the probability that a passerby will be pinched to a certain degree, but the passive measure that reduces the risk when the passer is likely to be pinched, Can't solve the problem. In addition, due to restrictions on factors such as the detection range of the sensor, the existing automatic revolving door is still inadequate in safety and may cause injury to weak children.

Chinese practical new model 2010202737377.8 China's practical new model 200001261114.0

  In view of the above-described conventional circumstances, an object of the present invention is to provide a highly safe automatic revolving door and an operation control method thereof. In other words, when one of the danger detection sensors detects when a tip of the rotor blade enters the dangerous area and a passerby or object passes through the dangerous area, the rotor blade is stopped quickly to greatly reduce the impact force. It is possible to ensure that the passer-by and the object escape, and to minimize the injury to the passer-by and the object.

In order to solve the above technical problem, the automatic revolving door of the present invention includes a fixed frame, a rotating blade, a rotating blade driving device, a detecting device for detecting a rotation position, and a tip of the rotating blade at a deceleration point before the dangerous area. When reaching, reduce the rotational speed of the rotor blade from the normal speed to a safe low speed to maintain a safe low speed in the dangerous area, and accelerate when the tip of the rotor blade passes through the dangerous area upright Thus, the rotating speed of the rotor blades is returned from the safe low speed to the normal speed, and the controller is configured to rotate at the normal speed until reaching the deceleration point before the next dangerous area.
Further, the tip of the rotor blade passes through the danger region, and further accelerates from a predetermined distance beyond the right standing to return the rotational speed of the rotor blade from a safe low speed to a normal speed.

Specifically, the safe low speed is 0.35 m / s or less, and the normal speed is 0.70 m / s or less.
Further, the control device is characterized in that when the rotational speed exceeds a predetermined threshold value in the dangerous region, the control unit stops the rotary blade.
The rotor driving device is an engine, the detection device is a motor encoder, and the control device is a microcomputer connected to the motor encoder. The engine driver is connected to the microcomputer, and the engine speed is reduced. And controlling the direction of rotation.
In addition, a plurality of danger detection sensors are connected to the control device, and when one of the plurality of danger detection sensors detects the rotating blade tip while rotating the danger area at a safe low speed, the rotation The wing is stopped.

Next, the automatic revolving door control method of the present invention is characterized in that the rotor blades that start rotating when the automatic revolving door activation sensor detects are controlled in the next step.
S1: The rotational position of the rotor blade is detected, and it is determined whether the tip of the rotor blade is in a dangerous area. If it is YES, it will transfer to step S11, and if it is NO, it will transfer to step S12.
S11: When activated, the rotor blades are moved to a safe low speed, and the process proceeds to step S5.
S12: When activated, the rotor blades are accelerated to the normal speed, and then the process proceeds to step S2.
S2: The rotor blades rotate at the normal speed, and then the process proceeds to step S3.
S3: The rotational position of the rotor blade is detected, and it is determined whether or not the tip of the rotor blade has reached the deceleration point. If YES, the process proceeds to step S4. If NO, the process proceeds to step S2.
S4: The rotor blades are decelerated to a safe low speed, and then the process proceeds to step S5.
S5: The rotor blades rotate at a safe low speed, and then the process proceeds to step S6.
S6: The rotational position of the rotor blade is detected, and it is determined whether or not the tip of the rotor blade has passed the danger area up to the right side. If YES, the process proceeds to step S7. If NO, the process proceeds to step S5. .
S7: After accelerating the rotor blades to the normal speed, the process proceeds to step S2.

Further, the next step is interrupted between step S5 and step S6.
S50: After step S5, it is determined whether or not the rotational speed of the rotor blade exceeds the threshold value. If YES, the process proceeds to step S51. If NO, the process proceeds to step S6.
S51: The rotary blade stops.
Further, the next step is interrupted between step S5 and step S6.
S500: After step S5, it is determined whether any of a plurality of danger detection sensors has been detected in the danger area. If YES, the process proceeds to step S501. If NO, the process proceeds to step S6.
S501: Back after the rotor blade stops.

  The rotational speed V of the rotor blade is calculated by the following formula 1.

式中、
Ｖ：回転翼の回転速度
Ｄ：回転扉の軌道の直径
Ｎo：自動回転扉の回転体を一周回転させるとき、モータのエンコーダーが生じたパルスの累積数値。
ｆ：マイコンに単位時間（例えば１秒）内に接収されたパルスの数。

Where
V: Rotational speed of the rotary blade D: Diameter of the track of the rotary door No: Cumulative value of pulses generated by the motor encoder when the rotary body of the automatic rotary door is rotated once.
f: The number of pulses received by the microcomputer within a unit time (for example, 1 second).

According to the present invention, the following effects can be obtained as compared with the prior art.
By reducing the speed at which the tip of the rotor blade passes through the danger zone, when the tip of the rotor blade enters the danger zone, a passerby passing through the danger zone can afford to avoid the rotor blade. To significantly improve the safety. Also, when the tip of the rotor blade enters the dangerous area, if a passerby or object passes through the dangerous area, if any danger detection sensor detects it, the rotor immediately moves to dangerous stop, so the impact force Can be greatly reduced and injury to passers and objects can be minimized so that passers and objects can be secured.

It is explanatory drawing of the structure of the automatic revolving door of 1st Example of this invention, and the rotational speed of a rotary blade. It is a block diagram which shows the control mechanism of the automatic revolving door. It is a flowchart of the step of the automatic revolving door. It is a flowchart of the step of the automatic revolving door in 2nd Example of this invention. FIG. 5 is a relationship diagram of the rotational speed of the rotor blade and the position of the rotor blade tip in the first embodiment. FIG. 10 is a relationship diagram between the rotational speed of the rotor blade and the position of the rotor blade tip in the second embodiment. It is a flowchart of the step of the automatic revolving door in the 3rd example of the present invention. It is a flowchart of the step of the automatic revolving door in 4th Example of this invention. It is a layout view of the danger detection sensor of the automatic revolving door in the fourth embodiment of the present invention.

Embodiments of a revolving door device and a control method thereof according to the present invention will be described below in detail with reference to the drawings.
In the present invention, the rotational speed of the rotor blade is a linear speed at the tip of the rotor blade, and is related to the rotational speed of the engine and the driving roller. The rotary wing includes two downspouts. The tip of the rotary blade indicates a vertical shaft at the tip of the rotary side where the rotary blade rotates counterclockwise. The timing at which the rotor blades of the present invention rotate is based on the detection of an activation sensor installed at the entrance / exit, as in the conventional case. In the following explanation, the state where the automatic revolving door is rotating will be explained, but during actual use, the automatic revolving door starts to move when the activation sensor detects it, and after the passerby passes, It is set to stop at the first position.

First, before explaining a revolving door apparatus and its control method in detail, it explains comprehensively about the member and basic concept relevant to this invention.
The automatic revolving door shown in FIG. 1 has two blades including two arcuate fixed walls 800 and an arcuate fixed wall 801 that are relatively installed, and a rotor blade 900 and a rotor blade 901 that are contained in the arcuate fixed wall. It is a revolving automatic door. The rotary blade 900 and the rotary blade 901 are installed symmetrically and rotate together at the same time. Between the arc-shaped fixed wall 800 and the arc-shaped fixed wall 801 is an area where passersby enter and exit by the rotary blade 900 and the rotary blade 901.
In the explanatory view of the rotation speed of the automatic revolving door shown in FIG. 1, the dangerous area is an area (AB area and DE area) from right standing to the front 700 mm. A deceleration point is provided at a position of 700 mm from the right side of the opening. The position of the deceleration point is determined by the normal speed V ₀ and the safe low speed V _{1 in the} dangerous area. The distance between the deceleration point and the safety zone is the distance that the rotor blade tip has passed from the normal speed to the safe low speed.

  In this embodiment, the deceleration point A1 is 300 mm away from the A point, and the deceleration point D1 is 300 mm away from the D point. Arc A-A1 and arc D-D1 are defined as deceleration areas. Of course, the deceleration area is set by the relationship between the normal speed V0 and the safe low speed V1 and the braking ability (for example, 250 mm, 200 mm, etc.). Considering the industrial standard and safety measures, the normal speed V0 is 0.7 m / s or less and the safe low speed V1 is 0.35 m / s or less. The normal speed V0 may be 0.65 m / s, 0.55 m / s, 0.45 m / s, and the safe low speed V1 may be 0.30 m / s, 0.25 m / s, and the like.

  As shown in FIG. 2, in the present embodiment, an engine 100 and a driving roller 102 that drives the engine are installed on the rotor blades. The rotating roller is rotated by the driving roller 102 rotating along a circular track on the upper part of the automatic rotating door. In this embodiment, in order to check the rotational position of the rotor blade by detecting the rotational distance of the rotor blade, the driving roller is rotated by using the engine 100 as power, the encoder 101 is connected to the engine 100, and the engine 100 is rotated once. The encoder 101 generates a certain number of pulses.

In the present embodiment, the case where the engine 100 makes one revolution to generate one pulse will be described as an example. Assuming that one pulse is generated when the engine 100 rotates once, the circumference of the driving roller multiplied by the number of rotations of the driving roller is a distance traveled by the driving roller, that is, a distance rotated by the rotor blade. When the dimensions of the drive roller do not change, the number of pulses generated by the encoder is relative to the diameter of the automatic revolving door when the rotor blade makes one revolution. Theoretically, N ₀ can be calculated by Equation 2 below.

式中、
Ｎ₀：駆動エンジンが自動回転扉の回転体を一周回転させるモータが生じたパルスの累積数値。
Ｄ：自動回転扉の軌道の直径
ｆ_m：駆動エンジンのモータが一回転して、生じたパルスの数。
ｉ： 駆動エンジンの減速機の減速比
ｄ：駆動エンジン駆動ローラの直径
製造と組立上の誤差により、実際のＮ₀は理論的に計算し出した数値と少し差がある。Ｎ₀とＤが上記の関係があるので、マイコンがＮ₀に基づいてＤを確定する。

Where
N ₀ : Cumulative numerical value of pulses generated by the motor in which the driving engine rotates the rotary body of the automatic rotating door once.
D: Diameter of automatic revolving door track f _m : Number of pulses generated by one rotation of the motor of the driving engine.
i: Reduction ratio of the reduction gear of the drive engine d: The actual N ₀ is slightly different from the theoretically calculated numerical value due to manufacturing and assembly errors of the drive engine drive roller diameter. Since N ₀ and D have the above relationship, the microcomputer determines D based on N ₀ .

The rotational position of the rotor blade shown in FIG. 1 is the initial position, and the pulse value is zero.
The rotor blade starts to move, and the tip position of the rotor blade 900 corresponds to the pulse value. When the tip of the rotor blade 900 reaches the point A1, the pulse value becomes n1, when the point A is reached, the pulse value becomes n2, and when the point B is reached, the pulse value becomes n3 and reaches the point C. Then, the pulse value becomes n4.
During one rotation of the rotary blade 900, the leading end portion of the rotor blade 900 reaches the first point D1, the pulse value becomes n1 + N _0/2, the pulse value becomes n2 + N _0/2 reaches the point D, point E reached, the pulse value becomes n3 + N _0/2, the pulse value reaches the point F becomes n4 + N _0/2. Since the two rotor blades are in a symmetrical position, the tip of the rotor blade 901 is 180 degrees different from the position of the tip of the rotor blade 900. At the time of learning, when the rotor blade makes one revolution, N ₀ is determined, and the orbit diameter of the rotor blade can be calculated. At the same time, the corresponding pulse values n1, n2, n3 and n4 at the point where the tip of the rotary blade 900 reaches can also be known. The microcomputer stores these numerical values.

When the rotor blade completes one revolution, the pulse value is newly accumulated from zero. In this way, since the pulse value received by the microcomputer is 0 to N ₀ , the position of the tip of the rotor blade 900 is determined by the pulse value received by the microcomputer and the stored position corresponding pulse values (n1, n2, n3, n4). Decide and control the acceleration, deceleration and uniform speed of the engine, and change the rotational speed of the rotor blades.
Therefore, it can be realized that the rotor blades rotate at two speeds. In some cases, after stopping the engine, the rotating direction of the engine is changed to reverse the rotating blades. The rotational speed of the rotor blade is determined by the pulse.

The principle is as follows.
In order to improve the operation safety of the automatic revolving door in the dangerous area, the microcomputer can calculate the rotation speed of the revolving blade of the revolving door from the diameter of the automatic revolving door and the pulse value within the unit time. In addition, the microcomputer compares the rotation speed with a threshold value stored so that the rotation speed of the rotor blade does not exceed a specified speed. If the specified speed is exceeded, the microcomputer stops the engine. Equation 1 of the rotational speed V of the rotor blade is as follows.

式中、
Ｖ：回転翼の回転速度
Ｄ：自動回転扉の軌道直径
Ｎ₀：駆動エンジンが自動回転扉の回転体を一周回転させるモータが生じたパルスの累積数値。
ｆ：マイコンが単位時間（例えば１秒）内接収されたパルスの数。
ｆの数値は単位時間（例えば１秒）内接収されたパルスの数と時間の関数関係によって、計算したものである。
上記の閾値は安全低速によって決まるものである。例えば閾値は安全低速の１０５％，１１０％，１１５％，１２０％などである。閾値を超えたら速度オーバーとする。

Where
V: Rotational speed of the rotary blade D: Orbit diameter N ₀ of the automatic revolving door: Cumulative value of pulses generated by the motor in which the drive engine rotates the rotating body of the automatic revolving door once.
f: The number of pulses inscribed in the unit time (for example, 1 second) by the microcomputer.
The numerical value of f is calculated according to the functional relationship between the number of pulses inscribed in unit time (for example, 1 second) and time.
The above threshold is determined by the safe low speed. For example, the threshold value may be 105%, 110%, 115%, 120%, etc. of safe low speed. If the threshold is exceeded, the speed is over.

Hereinafter, the configuration of the automatic revolving door of the present embodiment will be described in detail with reference to FIGS. 1 and 2.
The revolving door device has a fixed frame, a rotating blade, a rotating blade driving device, a detecting device for detecting the rotation position, a low speed rotation when the blade tip enters the dangerous region, and an acceleration when the tip of the rotating blade passes the dangerous region. The control device is configured to decelerate and rotate at a steady speed. In this embodiment, the drive unit engine 100 shown in FIGS. 1 and 2 rotates the rotor blades by driving the drive roller 102. The detection device is an encoder 101 that rotates together with the engine 100, and the control device is a microcomputer 200 that is connected to the encoder 101. The microcomputer 200 is connected to the engine 100 and controls the rotational speed and direction of the engine 100. The microcomputer 200 is provided with a communication I / O port 201 for the engine 100 and the encoder 101.

In the automatic revolving door of the present embodiment, the microcomputer 200 controls the rotational speed of the engine 100 so that the rotor blades rotate at different rotational speeds depending on the region. That is, when the tip of the rotor blade enters the danger area, it rotates at a low speed in order to reduce the probability that a passerby will be caught. Since the rotation speed is slow, the pinching force against the passerby has also decreased. In order to improve the trafficability, when the tip of the rotor blade passes through the dangerous area, it rotates at a normal speed. For details, as shown in FIG. 1, when the 900 tip rotor blade reaches the deceleration point A1 of the dangerous area before the rotational speed of the rotary blade 900 is decelerated from the normal speed V0 to a safe low speed V _1, safety in the hazardous area slow It rotates at V _1. When the tip of the rotor blade passes through the danger zone, that is, when the point B in FIG. 1 is reached, no more passers-by will enter, so it may be accelerated. _The rotating blade 900 starts accelerating from a predetermined distance beyond the right standing, and rotates at the normal speed V ₀ until the leading end of the rotating blade 900 reaches point D1, which is the next deceleration point. The rotor blade begins to decelerate from point D1, and the movements of deceleration, low speed, acceleration, etc. repeat in this way.

According to the present invention, the speed of the rotor blades passes through the danger zone at a low speed by two speeds to reduce the probability of accidents and the pinching force on the passerby. Outside the danger zone, the rotor blades can rotate at a normal speed to improve the trafficability, and both the speed and the trafficability are improved. Passing through the place where the tip of the rotor blade approaches the right side is likely to cause an accident where a passerby is caught. When the tip of the rotor blade moves away from the danger area and reaches the planned distance point, that is, when it reaches the planned distance point beyond the right-hand side, acceleration starts and the normal speed V _{0 is} accelerated. Since the rotation speed in the dangerous area is slow, even if a passerby is caught in a right-handed place where it is easy to be caught, the rotor blade can be stopped immediately, so that a serious accident can be prevented.

Next, the flowchart of the control method of the automatic revolving door of this invention is demonstrated, referring FIG. 1, FIG.
(Example 1)
When any of the activation sensors 11, 12, 13, and 14 shown in FIG. 9 is detected, the control device transmits an activation signal to the engine. The control method of the automatic revolving door according to the first embodiment of the present invention includes the following steps.
S1: The rotational position of the rotor blade is detected, and it is determined whether the tip of the rotor blade is in a dangerous area. If YES, the process proceeds to step S11. If NO, the process proceeds to step S12. In the present embodiment, when the rotor is in the initial position at the time of startup, that is, outside the danger zone and the deceleration zone, the process proceeds to step S12.
S12: When activated, the rotor blades are accelerated to the normal speed, and then the process proceeds to step S2.
S2: The rotating blade rotates at the normal speed, and then the process proceeds to step S3.
S3: The rotational position of the rotor blade is detected, and it is determined whether or not the tip of the rotor blade reaches the deceleration point. If YES, the process moves to step S4. If NO, the process proceeds to step S2.
S4: The rotor blades are decelerated to a safe low speed, and then the process proceeds to step S5.
S5: The rotor blades rotate at a safe low speed, and then the process proceeds to step S6.
S6: The rotational position of the rotor blade is detected, and it is determined whether or not the tip of the rotor blade has passed the dangerous area. If YES, the process moves to step S7. If NO, the process proceeds to step S5.
S7: When the rotor blade is activated, the rotor blade is accelerated to the normal speed, and then the process proceeds to step S2.

In the above description, the two rotor blades reach the deceleration point at the same time and pass through the danger zone at the same time. Therefore, one rotating blade 900 in FIG. 1 will be described as an example.
The relationship between the rotational speed of the rotary blade 900 and the position of the tip of the rotary blade 900 is shown in FIG. As shown in FIGS. 1 and 5, the rotating blade 900 rotates at the normal speed V ₀ and decelerates to the safe low speed V ₁ when the tip of the rotating blade 900 reaches the A1 point (deceleration point). In this embodiment, V ₀ is 0.7 m / s and V ₁ is 0.35 m / s. When the rotor blade 900 passes through the danger zone at the safe low speed V ₁ , that is, when the tip of the rotor blade 900 reaches the point B in FIG. 1, the rotor blade and the fixed wall are in a sealed state where a passerby cannot enter. In order to ensure safety, the rotor blade 900 further rotates 300 mm from the point B at a safe low speed V ₁ . A total of 1000 mm is rotated at the safe low speed V ₁ .
When the tip of the rotor blade 900 reaches point C in FIG. In other words, the position of the tip of the rotor blade 900 starts to accelerate from a predetermined distance beyond the right side. In this embodiment, the planned distance is 300 mm. Since the rotation speed in the dangerous area is slow, even if a passerby is caught in a right-handed place where it is easy to get caught, the rotor can be stopped immediately, so that a serious accident can be prevented.

The rotor blade 900 starts accelerating from the point C, accelerates from the safe low speed V ₁ to the normal speed, and then rotates at the normal speed V ₀ until reaching the next deceleration point (D 1 point in FIG. 1). When the deceleration point is reached, the rotor blades start to decelerate, and the movements such as deceleration, low speed, and acceleration are repeated in this way through the points D1, D, and F in order. As described above, the microcomputer compares the standard value with the received pulse value, determines the position of the tip of the rotor blade 900, and controls the engine speed (uniform speed, acceleration, deceleration), thereby Change the rotation speed to achieve shifting. When the rotor blade completes one revolution, the pulse value accumulates from zero and a new circulation starts.

As shown in FIG. 3, when the rotor blade is activated, if the tip of the rotor blade is in the danger region or the deceleration region, step S11 is executed in which the rotor blade is safely slowed down and then the process proceeds to step S5. That is, the starting speed of the rotor blades rotating wing tip enters the danger area or deceleration region is a safe low speed V _1, step S5 and subsequent steps are performed in situ.

(Example 2)
As shown in FIGS. 1, 4 and 6, the distinction embodiment second and one example embodiment pass through the danger zone at rotor blades safely slow V _1, that is, 700mm pass safely slow V _1. When the tip of the rotating blade 900 reaches the right standing (point B in FIG. 1), the rotating blade 900 and the arcuate fixed wall 801 are blocked, and when the passerby stops entering, the rotating blade starts from the safe low speed V _1. It rotates at normal speed V ₀ from the accelerated to the normal speed V ₀ until the next deceleration point (D1 points in Figure 1). When the deceleration point is reached, the rotor blades start to decelerate and the movements of deceleration, low speed, acceleration, etc. repeat in this way. When the rotor blade completes one revolution, the pulse value accumulates from zero and a new circulation starts. In the second embodiment, as compared with the first embodiment, after the rotor blade passes through the danger region at the safe low speed V ₁ , acceleration starts from a position exceeding a predetermined distance from the right side. It has the merit of improving the trafficability by increasing the average speed at which the automatic revolving door makes one rotation under the precondition of safety.

(Example 3)
As shown in FIG. 7, the distinction between the third embodiment and the first embodiment interrupts the next step between step S5 and step S6.
After step S5, step S50 is executed to determine whether or not the rotational speed of the rotor blade exceeds the threshold value.
S51: The rotor blades are stopped.
As described above, the rotational speed V of the rotor blade is calculated by the following formula 1.

閾値は安全低速Ｖ₁によって決まる。例えば、閾値を安全低速Ｖ₁の１０５％，１１０％，１１５％，１２０％とする。
上記の制御方法によって、回転翼先端部が危険領域に入るとき、閾値を超える異常が発生した場合、危険を避けるため緊急制動指令を出し回転翼を停止させる。

The threshold is determined by the safe low speed V ₁ . For example, 105% safe low speed V ₁ threshold, 110%, 115%, and 120%.
When an abnormality exceeding the threshold value occurs when the tip of the rotor blade enters the danger region by the above control method, an emergency braking command is issued to stop the rotor to avoid danger.

(Example 4)
As shown in FIG. 8, the distinction between the fourth embodiment and the first embodiment is that the following steps are interrupted between steps S5 and S6.
After step S5, step S500 for determining whether or not the danger detection sensor has detected in the dangerous area is executed. If YES, the process moves to step S501. If NO, the process proceeds to step S6.
S501: The rotor blade stops for a while and then backs away from the dangerous area.
S502: It is determined whether the detection state continues. If YES, the process moves to step S503. If NO, the process proceeds to step S11.
S503: The rotor blades are stopped.

In this embodiment, when the tip of the rotor blade enters the danger area, when the danger detection sensor detects it, the control device sends a detection signal to the control device, and then the control device sends a stop signal to the engine to prevent injury to passers-by. Therefore, the rotor blades are reversed so that passers-by can move forward and backward until the rotor blade tip part moves away from the danger area. If the detection state continues for a few seconds while the rotor blades are reversing, the rotor is stopped when the rotor blades are reversed.
When the detection state is released, the rotor blade starts rotating at a low speed and accelerates to a normal speed. Thereby, the safety | security of a revolving door can be improved so that a passerby, especially a weak child may not be pinched | interposed.

The danger detection sensor is a sensor that detects whether or not a passer-by enters a danger area, and is a pinching prevention sensor. FIG. 9 shows the arrangement of the danger detection sensor.
The danger detection sensor includes a first sensor 61 attached to the tip of the rotor blade 900, a first sensor 62 attached to the tip of the rotor blade 901, and a second sensor attached to the right of the arcuate fixed wall 800. The sensor 31 and the 2nd sensor 32 attached to the right standing of the circular arc shaped fixed wall 801 are included. The first sensors 61 and 62 and the second sensors 31 and 32 are contact sensors, and can detect whether a passerby or an object is caught.
The danger detection sensor also includes fourth sensors 21 and 22 provided on the bottom surface of the canopy above the danger area. The fourth sensors 21 and 22 are non-contact sensors and can detect all the upper and lower sides of the dangerous area.
Further, the danger detection sensor includes a third sensor 41 provided at the lower right standing portion of the arcuate fixed wall 801 and a third sensor 42 provided at the lower right standing portion of the arcuate fixing wall 800. The third sensors 41 and 42 are non-contact type sensors that are provided outside the right side stand and detect whether or not a passer-by enters the danger area from the right side standing side of the arc-shaped fixed wall 800, thereby It is provided at the lower part of the right side of the arc-shaped fixed wall 800 so that it can detect children, disabled persons, animals (such as pets), and supplement other sensors not detecting small targets.

  The danger detection sensor also includes fifth sensors 51 and 52 provided on the front ceiling of the tip portions of the rotary blades 900 and 901. The fifth sensors 51 and 52 are non-contact sensors that detect the upper and lower areas of the specified distance in front of the rotor blade, and can prevent a passerby or an object from being caught. Five danger detection sensors such as a first sensor, a second sensor, a third sensor, a fourth sensor, and a fifth sensor provided in the danger area can be detected from each direction. When one of them is detected, it is determined that the passer-by has entered the danger area.

11, 12, 13, 14: start sensors 21, 22: fourth sensor 31, 32: second sensor 41, 42: third sensor 51, 52: fifth sensor 61, 62: first sensor 100: engine 101: Encoder 102: Drive roller 200: Microcomputer 800, 801: Arc-shaped fixed wall 900, 901: Rotating blades A1, D1,: Deceleration point V ₁ : Safe low speed V ₀ : Normal speed AB area, DE area: Danger area

In order to solve the above technical problem, an automatic revolving door of the present invention includes a fixed frame, a rotating blade, a rotating blade driving device, a detecting device for detecting a rotation position, and a region where the rotating blade should rotate at a safe low speed. When the rotational speed of the tip of the rotor blade exceeds a threshold, the controller is configured to stop the rotor blade .

Specifically, the threshold value is set to a predetermined value larger than the safe low speed, and more specifically, the threshold value is set to a value of 105% or more of the safe low speed. Features.
The speed of the safety low speed, characterized in Oh Rukoto below 0.35 m / s.
Furthermore, the region where the rotor blades should rotate at the safe low speed includes a dangerous region from before the right side to the right side.

Claims (6)

  A stationary frame, a rotor blade, a rotor blade drive device, a detection device for detecting a rotational position, and the rotor blade when a rotational speed of the rotor blade tip exceeds a threshold in a region where the rotor blade should rotate at a safe low speed. An automatic revolving door characterized by comprising a control device for stopping the operation.   2. The automatic revolving door according to claim 1, wherein the threshold value is set to a predetermined value larger than the safe low speed.   The automatic revolving door according to claim 2, wherein the threshold value is set to a value of 105% or more of the safe low speed.   The automatic revolving door according to claim 1, wherein the safe low speed is 0.35 m / s or less.   The automatic revolving door according to any one of claims 1 to 4, wherein the region where the rotor blades should rotate at the safe low speed includes a dangerous region from before the right standing to the right standing. A control method of an automatic revolving door having a fixed frame, a rotating blade, a rotating blade driving device and a detecting device for detecting a rotation position,
A method of controlling an automatic revolving door, wherein the rotating blade is stopped when the rotating speed of the tip of the rotating blade exceeds a threshold value in a region where the rotating blade should rotate at a safe low speed.

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