CN118062708A - Passenger conveyor and automatic speed changing method for passenger conveyor - Google Patents
Passenger conveyor and automatic speed changing method for passenger conveyor Download PDFInfo
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- CN118062708A CN118062708A CN202311544924.3A CN202311544924A CN118062708A CN 118062708 A CN118062708 A CN 118062708A CN 202311544924 A CN202311544924 A CN 202311544924A CN 118062708 A CN118062708 A CN 118062708A
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- passenger conveyor
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 210000003371 toe Anatomy 0.000 claims description 17
- 210000002683 foot Anatomy 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Escalators And Moving Walkways (AREA)
Abstract
The present invention relates to a passenger conveyor and an automatic speed change method for the passenger conveyor, which can change the operation speed of a step only when a passenger with willingness to use is detected from people near a landing entrance of the passenger conveyor. The embodiment of the invention comprises: truss; a plurality of steps that move from one landing entrance to the other landing entrance in the truss; a camera for photographing the landing port; an image processing device which judges that the passenger conveyor will be utilized when the direction of the person near the entrance faces the steps based on the image photographed by the camera; and a control device for changing the operation speed of the steps when the image processing device determines that the passenger near the entrance is willing to use the passenger conveyor.
Description
The present application enjoys priority of Japanese patent application No. 2022-187254 (application date: 24 of 11/2022). The present application is incorporated by reference into this application in its entirety.
Technical Field
Embodiments of the present invention relate to a passenger conveyor and an automatic speed change method of the passenger conveyor.
Background
In recent years, in order to achieve a saving in labor and an improvement in efficiency of a passenger conveyor, an automatic operation type passenger conveyor that uses a sensor at a passenger entrance and operates only when a passenger is sensed has been increasing. Conventionally, in a passenger conveyor of an automatic operation system, a photoelectric pole is provided at a landing port to sense the presence or absence of a passenger, but from the viewpoint of design, etc., there has been an increase in the number of rodless conveyors in which no photoelectric pole is provided in recent years. However, in the case of the rodless type, when a person passes through a sensing range of a sensor provided in a handrail or the like, the operation is started regardless of the intention of using the passenger conveyor, and therefore, there is room for further improvement from the viewpoint of saving effort and improving efficiency.
Disclosure of Invention
In view of the above-described problems, an object of an embodiment of the present invention is to provide a passenger conveyor and an automatic speed change method of the passenger conveyor, which can change the operation speed of a step only when a passenger having a willingness to use is detected from among people in the vicinity of a landing entrance of the passenger conveyor.
An embodiment of the present invention is a passenger conveyor including: truss; a plurality of steps that move from one landing port to the other landing port of the truss; a camera for photographing the landing port; an image processing device which judges that the passenger conveyor will be utilized when the direction of the person near the entrance faces the steps based on the image photographed by the camera; and a control device for changing the operation speed of the steps when the image processing device determines that the passenger near the entrance is willing to use the passenger conveyor.
Further, an embodiment of the present invention is an automatic speed change method of a passenger conveyor, including: a step of photographing the landing port of a passenger conveyor having a truss and a plurality of steps moving from one landing port to the other landing port of the truss by a camera; an image processing device for judging whether the passenger conveyor is to be used or not, based on the image captured by the camera, when the person near the entrance is facing the step; and a step in which a control device changes the operation speed of the steps of the passenger conveyor when it is determined that a person in the vicinity of the entrance has a desire to use the passenger conveyor.
Drawings
Fig. 1 is an explanatory diagram of an escalator according to an embodiment of the present invention when viewed from the side, and is a diagram in which a structure on the left side is omitted when the lower layer is viewed from the upper layer.
Fig. 2 is a block diagram illustrating an electrical configuration of an escalator according to an embodiment of the present invention.
Fig. 3 is a flowchart showing an escalator according to a control method according to an embodiment of the present invention.
Fig. 4 is a schematic diagram showing the installation position of a camera according to an embodiment of the present invention.
Fig. 5 is a schematic diagram showing a method of determining the position of a shoulder and the position of a face and determining the orientation of a torso, by taking an image of the vicinity of a landing entrance of an escalator according to an embodiment of the present invention from above.
Fig. 6 is an image of the vicinity of the entrance of the escalator according to an embodiment of the present invention taken from above, and is a schematic diagram showing a method of determining the toe position and the heel position and determining the toe orientation.
Fig. 7 is a schematic diagram showing an installation position of a camera according to an embodiment of the present invention.
Fig. 8 is a schematic view of a method of determining the height and the foot size and determining the orientation of the toe, while taking an image of the vicinity of the entrance of the escalator according to an embodiment of the present invention from the railing portion.
Fig. 9 is a schematic view of a method of determining the height and the chest size and determining the orientation of the trunk, in which an image of the vicinity of the entrance of the escalator according to an embodiment of the present invention is taken from the railing portion.
Fig. 10 is an image of the vicinity of the entrance of the escalator according to one embodiment of the present invention taken from the handrail, and is a schematic view showing a method of determining the positions of eyes and nose and determining the orientation of the face.
Fig. 11 is a schematic diagram showing a method of determining whether or not a person is oriented to a step based on a photographed image at any time in an escalator according to an embodiment of the present invention.
Fig. 12 is a schematic diagram showing a method of determining whether or not a person is oriented toward a step based on continuous photographed images at any time in the escalator according to the embodiment of the present invention.
Detailed Description
An escalator according to an embodiment of the present invention will be described below with reference to fig. 1 to 12.
(1) Escalator 10
The structure of the escalator 10 will be described with reference to fig. 1 and 2.
Truss 12, which is the frame of escalator 10, spans the upper and lower floors of building 1 and is supported using support angle irons 2, 3.
A drive device 18, a pair of left and right drive sprockets 24, and a pair of left and right belt sprockets 27, 27 that travel the steps 30 in the front-rear direction are provided in the machine room 14 on the upper side of the upper end portion of the truss 12. The driving device 18 includes a motor 20 constituted by an induction motor (induction motor), a speed reducer, an output sprocket attached to an output shaft of the speed reducer, a drive chain 22 driven by the output sprocket, and a disc brake for stopping rotation of the motor 20 and maintaining the stopped state. The drive sprocket 24 is rotated by the drive chain 22. The pair of left and right drive sprockets 24, 24 and the pair of left and right belt sprockets 27, 27 are connected by a connecting belt, not shown, to rotate synchronously. A control device 50 for controlling the motor 20, the disc brake, and the like is provided in the upper machine chamber 14.
A driven sprocket 26 is provided in the machine room 16 on the lower floor side of the lower end portion of the truss 12. A pair of left and right endless step chains 28, 28 are provided between the upper driving sprocket 24 and the lower driven sprocket 26. That is, the wheel 301 having the plurality of steps 30 is mounted to the pair of left and right step chains 28, 28 at equal intervals. The wheels 301 of the step 30 travel along a rail, not shown, fixed to the truss 12, and the recesses on the outer peripheral portion of the drive sprocket 24 engage with the recesses on the outer peripheral portion of the driven sprocket 26 to turn up and down. In addition, the wheels 302 travel on the guide rails 25 fixed to the truss 12.
A pair of left and right skirt boards 44, 44 and a pair of left and right railings 36, 36 are erected on the left and right sides of the truss 12. A handrail rail 39 is provided at an upper portion of the balustrade 36, and the handrail belt 38 moves along the handrail rail 39. The front skirt 40 on the upper side is provided at the front lower portion on the upper side of the balustrade 36, the front skirt 42 on the lower side is provided at the front lower portion on the lower side, and the inlet portions 46 and 48, which are the entrances and exits of the handrail belt 38, are projected from the front skirt 40 and 42, respectively. The skirt guard 44 is provided at a side lower portion of the balustrade 36, and the steps 30 travel between the pair of left and right skirt guards 44, 44. The operation panels 52, 56 and the speakers 54, 58 are provided on the inner surfaces of the skirt panels 44 of the upper and lower layers, respectively.
The handrail belt 38 enters the front skirt 40 from the inlet 46 on the upper side, is stretched over the belt sprocket 27 via the guide roller group 64, and then moves inside the skirt 44 via the guide roller group 66, and emerges from the inlet 48 on the lower side to the outside of the front skirt 42. The belt sprocket 27 rotates together with the drive sprocket 24, whereby the handrail belt 38 moves in synchronization with the steps 30. The traveling handrail belt 38 is pressed against the rotating belt pulley 27 by the pressing member 68.
An upper-stage landing plate 32 is provided horizontally at the landing port of the ceiling surface of the machine chamber 14 on the upper stage side, and a lower-stage landing plate 34 is provided horizontally at the landing port of the ceiling surface of the machine chamber 16 on the lower stage side. A comb-shaped comb plate 60 is provided at the front end of the landing plate 32, and the steps 30 are moved in and out with respect to the comb plate 60. The elevator plate 34 is also provided with a comb-shaped comb plate 62.
As shown in fig. 4 and 7, the escalator 10 is provided with a camera 80, and the camera 80 can photograph the situation in the vicinity of the entrance on the upper floor side and the vicinity of the entrance on the lower floor side. The camera 80 is preferably a model capable of acquiring a high-resolution photographed image in a wide-angle image, and the installation location of the camera 80 is determined so that the orientation of the face, the orientation of the trunk, the orientation of the toes, and the like of a person in the vicinity of the entrance can be grasped, and the camera 80 can be installed on, for example, the ceiling surface of the building 1 or the balustrade 36.
(2) Electrical construction of escalator 10
The electrical configuration of the escalator 10 will be described with reference to fig. 2,4, and 7.
The driving device 18, the operation panels 52 and 56, the speakers 54 and 58, and the camera 80 are connected to the control device 50. The control device 50 is also connected to an image processing device 51 for processing an image captured by the camera 80.
(3) Control method for automatic operation of escalator 10
A control method of the escalator 10 according to the above embodiment will be described with reference to fig. 2 and 3. In the following description, the following control method is described: in the escalator 10 in which the steps 30 are set to descend, it is determined whether or not a person in the vicinity of the landing on the upper floor has a intention to use the escalator 10, and the escalator 10 is automatically operated only when the intention is to use.
Fig. 3 is a flowchart showing a control method of the escalator 10 according to the present embodiment. The control method is started when the camera 80 senses that a person has entered a prescribed area of the entrance of the escalator 10, for example, a range within 3 meters from the boundary line between the steps 30 and the comb plate 60. In step S1, the control device 50 controls the camera 80 to photograph a predetermined photographing region of the entrance/exit of the escalator 10. Next, the process advances to step S2.
In step S2, the control device 50 controls the image processing device 51 to analyze the image acquired in step S1. In the image analysis, information for grasping the orientation of the face, the body, the toe, and the like of the person in the vicinity of the entrance is acquired, and whether or not the person in the vicinity of the entrance is willing to use is determined based on the acquired information. The method for determining the willingness to use will be described in detail later. Then, if it is determined that there is a desire to use, the process proceeds to step S3 (yes). If it is determined that there is no intention to use, the process proceeds to step S7 (no). Hereinafter, a person who has a willingness to use is referred to as a "passenger".
In step S3, the control device 50 operates the drive device 18 to start the operation of the escalator 10. Next, the process advances to step S4.
In step S4, control device 50 counts the elapsed time from the time when it is determined in step S2 that the passenger has a desire to use. Next, the process advances to step S5.
In step S5, control device 50 confirms whether or not a new passenger is present at the time when the predetermined time elapses. Step S6 is entered (yes) without a new passenger. When a new passenger is present, the elapsed time is reset at the time when it is determined that the new passenger is willing to use, and the flow returns to step S4, and the count of the elapsed time is started for the new passenger (no).
In step S6, the control device 50 stops the operation of the escalator 10 and puts it into a standby state. Then, the control is ended.
In step S7, when the control device 50 determines that the person in the vicinity of the entrance has moved out of the predetermined area and left the entrance, the control is ended (yes). If it is determined that the person in the vicinity of the entrance is still within the predetermined area, the routine returns to step S1 (no).
(4) Method for judging utilization intention
In the above step S2, the determination as to whether or not a person in the vicinity of the entrance has a desire to use the escalator 10 is: when at least one direction selected from the group consisting of the direction of the face, the direction of the body, and the direction of the toe of the person, which indicates the direction of the person, is directed toward the steps 30, for example, it can be determined that there is a desire to use the escalator 10.
First, how to determine the orientation of a person will be described with reference to fig. 4 to 10.
As shown in fig. 4, a case where the camera 80 is provided on the ceiling surface of the building 1 will be described. In this case, as shown in fig. 5 and 6, information such as the position of the face 76, the position of the shoulder 75, the position of the toe 73, and the position of the heel 72 can be obtained from the image captured by the camera 80.
As shown in fig. 5, the control device 50 may employ, as the 1 st group indicating the orientation of the person, the orientation of the body, which is the direction in which the face 76 and the toe 73 are oriented, of the bisector perpendicular to the line connecting the two shoulders 75.
As shown in fig. 6, the control device 50 may also use the orientation of the line connecting from the heel 72 to the toe 73 (the toe orientation) as the group 2 indicating the orientation of the person.
Next, as shown in fig. 7, a case in which a camera 80 is provided to the balustrade 36 will be described. In this case, as shown in fig. 8 to 10, information such as the height of the person, the size of the feet, the size of the chest, the position of the eyes 77, and the position of the nose 78 can be obtained from the image captured by the camera 80.
As shown in fig. 8 (a), when the person is facing the camera 80, the ratio of the foot size (width) b1 to the height a1 is small, and as shown in fig. 8 (b), when the person is not facing the camera 80, the ratio of the foot size (length) b2 to the height a2 is large. By using this relationship, the control device 50 obtains the height and the foot size from the photographed image, and uses the ratio of the foot size to the height as the 3 rd group indicating the direction of the person, and can determine that the toe is directed to the camera 80 even when the ratio is smaller than a predetermined value.
In addition, as shown in fig. 9 (a), when the person is facing the camera 80, the size (width) c3 of the chest is relatively large with respect to the height a3, and as shown in fig. 9 (b), when the person is not facing the camera 80, the size (thickness) c4 of the chest is relatively small with respect to the height a 4. By using this relationship, the control device 50 obtains the height and the chest size from the photographed image, and uses the ratio of the chest size to the height as the 4 th group indicating the orientation of the person, and can determine that the body is oriented in the direction of the camera 80 even when the ratio is greater than a predetermined value.
In addition, as shown in fig. 10 (a), when the face 76 is directed toward the camera 80, two plumb lines drawn from the end portions (outer corners) of the eyes 77 and a plumb line drawn from the apex of the nose 78 are located at equally spaced positions, and as shown in fig. 10 (b), when the face 76 is not directed toward the camera 80, two plumb lines drawn from the end portions (outer corners) of the eyes 77 and a plumb line drawn from the apex of the nose 78 are in unequal spaced relation. The control device 50 can determine the orientation of the face 76 by using this relationship.
The determination of whether or not the orientation of the person (the orientation of the face, the orientation of the torso, and the orientation of the toe) faces the steps 30 changes according to the installation environment of the escalator 10, such as the installation position of the camera 80, and is thus determined according to the installation environment.
First, the orientation of a person can be determined from a photographed image (still image) at an arbitrary timing. For example, the control device 50 can determine that the person is not facing the step 30 when the line indicating the direction of the person does not cross the end of the step 30 (the boundary line between the step 30 and the comb plate 60) as indicated by the arrow a in fig. 11, and can determine that the person is facing the step 30 when the line crosses the end of the step 30 as indicated by the arrow B.
Further, the change in the orientation of the person may be tracked and determined from continuous photographed images at any time. In fig. 12, arrow X indicates the direction of the person at time n, arrow Y indicates the direction of the person 1 second after time n, arrow Z indicates the direction of the person 2 seconds after time n, and the broken line indicates a perpendicular line to the end of the step 30 (boundary line between the step 30 and the comb plate 60). The control device 50 can determine that the person is facing the step 30 when the angle between the arrow indicating the direction of the person and the vertical line decreases with the passage of time and is equal to or smaller than a predetermined angle.
(5) Effects of
According to the present embodiment, it is possible to determine whether or not a person in the vicinity of the entrance has a desire to use the escalator 10, and to start the operation of the escalator 10 only when there is a desire to use the escalator 10, so that the escalator 10 can be made labor-saving and efficient.
According to the present embodiment, even when a person who is in the vicinity of the entrance and faces a direction different from the direction of the steps 30 has switched directions, it is possible to determine whether or not there is a desire to use the vehicle.
(6) Modification example
In the above embodiment, the example of starting the control method has been described in the case where the camera 80 detects that the vehicle enters the predetermined area near the entrance, but the control method may be started when a human body sensor or the like is provided on the balustrade 36 or the like and the sensor detects a human body.
In the above embodiment, the method of determining whether or not a person in the vicinity of the entrance of the escalator 10 has a willingness to use has been described, but it is also possible to determine whether or not a person in the vicinity of the entrance has a willingness to use and, if it is determined that a willingness to use is present, issue a warning broadcast from the speakers 54, 58 that the entrance is not the entrance.
In the above embodiment, the example in which the optical pole is not provided has been described, but the optical pole is not limited to this and may be provided. From the viewpoint of design, it is preferable not to provide a pole-free type optical pole.
In the above embodiment, the example of switching from the stopped state to the operating state when it is determined that there is a desire to use a person in the vicinity of the entrance has been described, but the speed of the steps 30 may be changed from the low-speed operation to the normal operation. That is, in the present specification, "changing the operation speed of the steps" includes switching the escalator 10 from the stopped state to the operating state, and also includes changing the speed of the steps 30 in operation.
In the above embodiment, the example in which the passenger conveyor is an escalator was described, but the passenger conveyor may be a moving walkway, and in this case, the same control as the control method described above can be performed.
While the above description has been made of one embodiment of the present invention, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other modes, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the scope equivalent thereto.
Claims (7)
1. A passenger conveyor, comprising:
Truss;
A plurality of steps that move from one landing port to the other landing port of the truss;
A camera for photographing the landing port;
an image processing device which judges that the passenger conveyor will be utilized when the direction of the person near the entrance faces the steps based on the image photographed by the camera; and
And a control device for changing the operation speed of the steps when the image processing device determines that the passenger in the vicinity of the entrance is willing to use the passenger conveyor.
2. The passenger conveyor of claim 1, wherein,
The image processing device determines the direction of the person based on at least one piece of information selected from the group consisting of the direction of the face, the direction of the body, and the direction of the toe of the person in the vicinity of the entrance, based on the image captured by the camera.
3. The passenger conveyor of claim 2, wherein,
The image processing device acquires the position of the shoulders and the position of the face of the person in the vicinity of the entrance from the image captured by the camera, and determines the orientation of the body from the positional relationship between the shoulders and the face.
4. The passenger conveyor of claim 2, wherein,
The image processing device acquires the positions of the toes and heels of the person in the vicinity of the entrance from the image captured by the camera, and determines the orientation of the toe from the orientation of the line connecting the heels to the toes.
5. The passenger conveyor of claim 2, wherein,
The image processing device obtains the height, chest size or foot size of the person near the entrance from the image photographed by the camera,
Judging the direction of the body according to the ratio of the height to the chest, or
The orientation of the toe is determined based on the ratio of the height to the size of the foot.
6. The passenger conveyor of claim 2, wherein,
The image processing device acquires positions of eyes and a nose of a person in the vicinity of the entrance from an image captured by the camera, and determines an orientation of the face based on a positional relationship between the eyes and the nose.
7. An automatic speed change method of a passenger conveyor, comprising:
A step of photographing the landing port of a passenger conveyor having a truss and a plurality of steps moving from one landing port to the other landing port of the truss by a camera;
an image processing device for judging that the passenger conveyor will be used when the direction of the person near the entrance faces the steps based on the image photographed by the camera; and
And a step of changing an operation speed of the steps of the passenger conveyor by a control device when it is determined that a person in the vicinity of the entrance is willing to use the passenger conveyor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-187254 | 2022-11-24 | ||
| JP2022187254A JP7387858B1 (en) | 2022-11-24 | 2022-11-24 | Passenger conveyor and automatic speed change method for passenger conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118062708A true CN118062708A (en) | 2024-05-24 |
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ID=88917979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311544924.3A Pending CN118062708A (en) | 2022-11-24 | 2023-11-20 | Passenger conveyor and automatic speed changing method for passenger conveyor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7387858B1 (en) |
| CN (1) | CN118062708A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004051293A (en) | 2002-07-18 | 2004-02-19 | Hitachi Building Systems Co Ltd | Operating device for passenger conveyor |
| JP5619129B2 (en) | 2012-12-28 | 2014-11-05 | 東芝エレベータ株式会社 | Escalator control device and escalator control method |
-
2022
- 2022-11-24 JP JP2022187254A patent/JP7387858B1/en active Active
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2023
- 2023-11-20 CN CN202311544924.3A patent/CN118062708A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP7387858B1 (en) | 2023-11-28 |
| JP2024075962A (en) | 2024-06-05 |
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