JP2020132389A - Elevator system - Google Patents

Abstract

To easily detect a difference in level between a floor of a car and a floor of a hall.SOLUTION: An elevator system according to an embodiment includes photographing means, marker detecting means, and step detecting means. The photographing means photographs the vicinity of an entrance of a car. The marker detecting means detects at least two markers provided on a floor of a hall from the image photographed by the photographing means when the car arrives at the hall of an arbitrary floor. The step detecting means detects a difference in level between the floor surface of the car and the floor surface of the hall based on the distance information between the markers or the size information of the markers detected by the marker detecting means.SELECTED DRAWING: Figure 4

Description

Embodiments of the present invention relate to elevator systems.

The elevator car moves up and down in the hoistway via a rope erected on the hoisting machine. At this time, the elevator control device moves the car to the target floor at a predetermined speed while detecting the position of the car from the count value of the pulse signal of the encoder output in synchronization with the rotation of the hoist. ing.

Here, when the car arrives at the target floor, in order to correctly land the floor of the car on the floor of the landing on the floor, a landing detection device and a landing detection plate (hereinafter referred to as a landing inspection board). Is called) is used. The landing detection device is installed, for example, on the upper part of the car toward the guide rail. The inspection board is installed on the guide rail, for example, at intervals of each floor. The installation position of the landing inspection plate is adjusted in advance so that the landing detection device detects the landing inspection plate when the level of the floor surface of the car and the floor surface of the landing match.

JP-A-2017-24881 Japanese Unexamined Patent Publication No. 2016-11237

For example, the installation position of the inspection plate may deviate from the initial adjustment position due to distortion of the guide rail or building due to deterioration over time or temperature change during the day. If the landing inspection plate is deviated from the adjustment position, when the car is landed at the timing when the landing detection device detects the landing inspection plate, it is between the floor surface of the car and the floor surface of the landing. There is a step in.

Normally, maintenance personnel visually check the condition of the step between the floor of the car and the floor of the landing by regular inspections, etc., and install an inspection plate according to the amount of step (positional deviation) at that time. The position is being readjusted. However, it is troublesome for the maintenance staff to visually check the state of the step at each periodic inspection, and the maintenance staff is also burdened. On the other hand, even during normal driving, if there is a step between the floor of the car and the floor of the landing, it will hinder the user from getting on and off, so the state of the step can be easily detected. Is desired.

An object to be solved by the present invention is to provide an elevator system that can easily detect a step between the floor surface of a car and the floor surface of a landing.

The elevator system according to one embodiment includes imaging means, marker detecting means, and step detecting means. The means of photography is to photograph the vicinity of the entrance and exit of the car. The marker detecting means detects at least two markers provided on the floor surface of the landing from the image taken by the photographing means when the car lands on the landing on an arbitrary floor. The step detecting means detects the step between the floor surface of the car and the floor surface of the landing based on the distance information between the markers detected by the marker detecting means or the size information of each marker.

FIG. 1 is a diagram showing an overall configuration of an elevator according to the first embodiment. FIG. 2 is a diagram showing a configuration of a portion around an entrance / exit in the car according to the same embodiment. FIG. 3 is a diagram showing a configuration of a car floor surface and a landing floor surface near the entrance / exit of the car according to the same embodiment. FIG. 4 is a block diagram showing a configuration of an elevator system according to the embodiment. FIG. 5 is a diagram showing an example of an image taken by the camera according to the embodiment. FIG. 6 is a diagram showing an example of an image taken by the camera according to the embodiment. FIG. 7 is a diagram showing an example of an image taken by the camera according to the embodiment. FIG. 8 is a flowchart showing the operation of the elevator system according to the embodiment. FIG. 9 is a flowchart showing a procedure of the step detection process executed by the step detection device of the elevator system according to the same embodiment. FIG. 10 is a flowchart showing a procedure of the step detection process executed by the step detection device of the elevator system according to the second embodiment. FIG. 11 is a diagram showing a configuration of a car floor surface and a landing floor surface near the entrance / exit of the car according to the modified example.

Hereinafter, embodiments will be described with reference to the drawings. In the following description, the functions and components that are substantially or substantially the same are designated by the same reference numerals and will be described as necessary.

(First Embodiment)
FIG. 1 is a diagram showing an overall configuration of an elevator according to the first embodiment, and here shows an example in which a 1: 1 roping type elevator is installed in a building.

A car 11 and a counterweight 12 are provided in the hoistway 10 of the elevator so as to be able to move up and down. The main rope 13 is wound around the hoist 14 (via a sheave (not shown)). A car 11 is connected to one end of the main rope 13, and a counterweight 12 is connected to the other end.

The hoisting machine 14 is installed in the machine room 16 of the building together with the elevator control device 15. In the machine roomless type elevator without the machine room, the hoisting machine 14 and the elevator control device 15 are installed in the hoistway 10.

The elevator control device 15 controls the entire elevator including the drive control of the hoisting machine 14, and is sometimes called a “control panel”. When the hoisting machine 14 is driven by a drive instruction from the elevator control device 15, the car 11 and the counterweight 12 move up and down in a sliding manner via the main rope 13.

Further, in order to detect that the car 11 has landed on the landing 21 on each floor, a landing detection device 22 and a landing inspection plate 23 are provided in the hoistway 10. In the example of FIG. 1, the landing detection device 22 is provided on the car 11, and the inspection plate 23 is provided on the guide rail 24 of the car 11 at intervals of each floor. When the landing detection device 22 detects the landing inspection plate 23 at the landing 21 on each floor, the landing detection device 22 sends a landing detection signal to the elevator control device 15.

The elevator control device 15 determines that the car 11 has landed at the correct position based on the landing detection signal, stops the operation of the car 11, and opens the car door 25. A landing door 26 is provided at the landing 21 on each floor, and the door opens together with the car door 25. The power source (door motor) is on the side of the car door 25, and the landing door 26 is configured to engage with the car door 25 and open the door together.

Here, for example, the guide rail 24 may be distorted due to a change in temperature or the like, and the position of the inspection plate 23 attached to the guide rail 24 may shift. If the position of the inspection plate 23 is deviated, the car 11 cannot be properly landed at the landing 21 on each floor, so that a step is generated between the floor surface of the car 11 and the floor surface of the landing 21. The "step" is a deviation of the car 11 in the ascending / descending direction (vertical direction). Even if the landing detection device 22 is provided under the car 11 and the inspection plate 23 is provided on the wall of the hoistway 10 on each floor, the car 11 may be distorted due to the distortion of the building. A step may occur between the floor surface and the floor surface of the landing 21.

In the present embodiment, in order to detect such a step by a simple method, a step detection device 31 is installed on the curtain plate 27 above the entrance / exit of the car 11. The step detection device 31 detects a step (presence or absence of step, step amount) between the floor surface of the car 11 and the floor surface of the landing 21 by using markers 33a and 33b (see FIG. 3) described later. In the following description, when the term "detecting a step" is used, it has both meanings of "detecting the presence or absence of a step" and "detecting a step amount (positional deviation amount)". The step detection device 31 is electrically connected to the elevator control device 15 via a tail cord 28.

FIG. 2 is a diagram showing a configuration of a portion around the entrance / exit in the car 11.
A car door 25 is provided at the doorway of the car 11 so as to be openable and closable. On the front wall 41 on one side of the car door 25, an operation panel having a large number of destination floor buttons 42, a display 43, and the like are installed. Further, a full door open detection device 44 for detecting that the car door 25 is fully opened is installed near the entrance / exit of the car 11.

Here, the step detection device 31 is detachably attached to the central portion of the curtain plate 27 above the entrance / exit of the car 11 via the attachment means 50. The mounting means 50 is, for example, a magnet or an adhesive. The step detection device 31 is provided with a camera 51 (see FIG. 4) as will be described later. The camera 51 is below the bottom of the curtain plate 27 so that when the car door 25 is opened together with the landing door 26, the floor surface 21a of the landing 21 and the floor surface 11a of the car 11 can be photographed (see FIG. 3). It is installed facing the direction.

FIG. 3 is a diagram showing the configuration of the car floor surface and the landing floor surface near the entrance / exit of the car 11, and shows a state in which the car door 25 and the landing door 26 are fully opened and viewed downward from the upper part of the entrance / exit of the car 11. Shown. In FIG. 3, the upper side shows the floor surface 21a of the landing 21, and the lower side shows the floor surface 11a of the car 11.

At the landing 21, a three-sided frame 34 is provided at the arrival port of the car 11, and a band-shaped landing sill 32 having a predetermined width is provided on the floor surface 21a between the three-sided frames 34 along the opening / closing direction of the landing door 26. It is arranged. In the present embodiment, the two markers 33a and 33b are spaced apart from each other with a predetermined distance L on the surface of the landing sill 32.

The interval L is, for example, the length from the center of the marker 33a to the center of the marker 33b. In order to improve the step detection accuracy, it is preferable to arrange the markers 33a and 33b on one end side and the other end side in the longitudinal direction of the landing sill 32 so that the interval L is long, but the markers 33a and 33b If they do not overlap, they may be placed anywhere on the landing sill 32. Further, the markers 33a and 33b may be arranged at arbitrary positions on the floor surface 21a of the landing 21 around the landing sill 32 as long as it is within the shooting range of the camera 51.

Further, in the present embodiment, the markers 33a and 33b have a circular shape having the same size, but the shape and the size are not limited to the circular shape. The markers 33a and 33b may be, for example, a sticker member attached to an arbitrary place, or may be pre-engraved. The markers 33a and 33b are preferably made of a material that can be clearly photographed by the camera 51 without being affected by the surrounding lighting environment or the like.

Note that d in the figure indicates the diameter size of the markers 33a and 33b. The method of detecting the step using the sizes of the markers 33a and 33b will be described in detail later in the second embodiment.

At the entrance and exit of the car 11, a safety shoe 45 that moves in the door opening / closing direction in conjunction with the car door 25 is installed. A band-shaped car sill 46 having a predetermined width is arranged on the floor surface 11a of the entrance / exit of the car 11 along the opening / closing direction of the car door 25.

FIG. 4 is a block diagram showing a functional configuration of the elevator system according to the present embodiment.

The elevator system according to the present embodiment includes a step detection device 31 and an elevator control device 15. The step detection device 31 and the elevator control device 15 are connected via the tail code 28 shown in FIG. 1, but may be connected by, for example, wireless communication.

The step detection device 31 is provided independently of the elevator control device 15, and includes a camera 51, an image processing unit 52, a control unit 53, a notification unit 54, a communication unit 55, and a power supply unit 56 in one housing.

The camera 51 is installed downward from the lower part of the curtain plate 27 at the upper part of the doorway of the car 11, and photographs the floor surface 11a of the car 11 and the floor surface 21a of the landing 21 near the doorway of the car 11.

The image processing unit 52 analyzes the image captured by the camera 51. The image processing unit 52 is provided with a marker detection unit 521 as a functional configuration related to step detection of this system. The marker detection unit 521 detects the markers 33a and 33b provided on the landing sill 32 from the captured image of the camera 51 when the car 11 lands on the landing 21 on an arbitrary floor.

The control unit 53 controls the operation of the step detection device 31. The control unit 53 is provided with a memory (not shown) for storing information necessary for step detection, such as a table described later, and as a functional configuration related to step detection of this system, the step detection unit 531 and notification control are provided. A unit 532 is provided.

The step detection unit 531 executes the step detection process when the fully open state of the car door 25 is detected by the all-door open detection device 44, and is based on the distance information between the markers 33a and 33b detected by the marker detection unit 521. , The step between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21 is detected. The notification control unit 532 activates the notification unit 54 to notify when a step is detected by the step detection unit 531. Under the control of the notification control unit 532, the notification unit 54 notifies the state of the step (presence or absence of the step and the amount of the step) by, for example, generating a warning sound or making a voice announcement.

The communication unit 55 performs data communication processing between the step detection device 31 and the elevator control device 15. The power supply unit 56 is composed of, for example, a battery having a predetermined capacity, and supplies the power required for the operation of the step detection device 31 to the control unit 53.

The elevator control device 15 controls the entire elevator. The elevator control device 15 is provided with a communication unit 61 and a control unit 62 as a functional configuration related to step detection of this system.

The communication unit 61 performs data communication processing between the elevator control device 15 and the step detection device 31. The control unit 62 controls the position when the car 11 is landed on the landing 21 based on the amount of the step detected by the step detecting device 31.

In the example of FIG. 4, the image processing unit 52 and the control unit 53 in the step detection device 31 have an independent configuration, but the control unit 53 has a function of the image processing unit 52 (marker detection unit 521). Is also good. The step detection device 31 is unitized as one housing, and can be attached to the car 11 of each property.

5 to 7 are diagrams showing an example of an image taken by the camera 51.
FIG. 5 is an example of an image taken by a camera 51 installed on the curtain plate 27 in a state where the height (level) of the floor surface 21a of the landing 21 and the floor surface 11a of the car 11 are the same. Let L0 be the inter-marker distance Lx obtained from this captured image. Lx is the distance information on the image and corresponds to the distance L of the markers 33a and 33b shown in FIG.

FIG. 6 is an example of an image taken by the camera 51 in a state where the floor surface 11a of the car 11 is lower than the floor surface 21a of the landing 21. Let L1 be the inter-marker distance Lx obtained from this captured image. FIG. 7 is an example of an image taken by the camera 51 in a state where the floor surface 11a of the car 11 is higher than the floor surface 21a of the landing 21. Let Lx be the inter-marker distance Lx obtained from this captured image.

The camera 51 is installed on the curtain plate 27 in the car 11. Therefore, as shown in FIG. 6, in the image taken by the camera 51 when the floor surface 11a of the car 11 is lower than the floor surface 21a of the landing 21, the floor surface of the landing 21 including the landing sill 32 is shown. 21a is larger than the image of FIG. In this case, L1 is longer than L0 (L1> L0).

On the other hand, as shown in FIG. 7, the image taken by the camera 51 when the floor surface 11a of the car 11 is higher than the floor surface 21a of the landing 21 is the floor surface of the landing 21 including the landing sill 32. The image around 21a is smaller than the image of FIG. In this case, L2 is shorter than L0 (L0> L2).

Here, the distance L0 between markers on the image when there is no step is used as the reference distance information. The difference value between L0 and L1 and L0 and L2 (hereinafter referred to as the distance difference value) has a corresponding relationship with the step amount. If this correspondence is prepared in advance as, for example, a table (not shown), the current step amount can be searched by searching the table based on the difference value between the marker distance Lx and the reference distance L0 detected from the captured image. Is required. It is also possible to formulate the correspondence relationship and obtain the current step amount by calculation using the formula each time.

The operation of this system in this embodiment will be described in detail.
FIG. 8 is a flowchart showing the operation processing of the elevator system according to the present embodiment.

It is assumed that the car 11 has landed on the landing 21 on an arbitrary floor. When the control unit 53 provided in the step detection device 31 inputs a signal indicating that the car 11 has been fully opened by the all-door open detection device 44 (YES in step S11), the image processing unit 52 is activated and described as follows. The step detection process such as is executed. The step detection process is executed at the timing when all the car 11s are opened so that the cameras 51 can reliably photograph the markers 33a and 33b which are separately arranged on the landing sill 32.

That is, the image processing unit 52 analyzes and processes the image taken by the camera 51 when the car 11 is fully opened, and detects the markers 33a and 33b on the landing sill 32 from the captured image through the marker detection unit 521. (Step S12). The image processing unit 52 outputs marker information including the coordinate positions (center coordinates) of the markers 33a and 33b to the control unit 53 as a detection result (step S12). The step detection unit 531 of the control unit 53 detects the step between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21 based on the input marker information (step S13).

FIG. 9 is a flowchart showing the details of the step detection process in step S13.
The step detection unit 531 calculates the inter-marker distance Lx from the coordinate positions of the markers 33a and 33b included in the marker information (step S31). The step detection unit 531 compares the preset reference distance L0 with the inter-marker distance Lx, and calculates the distance difference value between the two (step S32). The step detection unit 531 calculates the step amount corresponding to the distance difference value by using a table (not shown) showing the above-mentioned correspondence relationship or by using a mathematical formula showing the correspondence relationship (step S33).

Returning to FIG. 8, when a step of a predetermined amount or more is detected between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21 (YES in step S14), the step detection unit 531 is an elevator control device. The step amount calculated in step S33 is sent to the elevator control device 15 to 15 to control the landing position of the car 11 by the control unit 62 (step S15). As a result, in the elevator control device 15, the hoisting machine 14 is driven through the control unit 62, and the car 11 is moved in the direction of eliminating the step between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21. Move by the amount and fine-tune the landing position of the car 11.

At this time, the notification control unit 532 provided in the elevator control device 15 confirms whether or not the step amount is within the preset notification range (step S16). The "notification range" is set to ± 30 mm or more in the vertical direction with respect to the floor surface 11a of the car 11, for example. That is, when the threshold value for the step amount is ± 30 mm, the notification is set when the step amount calculated in step S33 is ± 30 mm or more. This may cause a step that does not affect the driving of the car 11 and the getting on and off of the user due to a daily temperature change or the like. By setting the notification range of the step amount, it is possible to prevent frequent notification.

If the step amount is within the notification range (YES in step S16), the notification control unit 532 notifies the step amount calculated at that time by voice through the notification unit 54 (step S17). It should be noted that only the presence or absence of a step may be notified by a warning sound or the like.

As described above, according to the first embodiment, only by attaching the two markers 33a and 33b to the landing sill 32, the perspective change of the inter-marker distance Lx on the image taken by the camera 51 is used. The step between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21 can be easily detected. Therefore, it is possible to ensure the safety of the elevator by taking appropriate measures when a step is generated.

In addition, when a step is generated, the amount of the step at that time is specifically notified so that the maintenance staff does not have to visually check the state of the step at the landing 21 on each floor, for example, during a periodic inspection. While listening to the notification of the amount of steps on the car 11, the work of correcting the installation position of the inspection plate 23 can be efficiently advanced.

Further, when a step is detected during normal driving, the landing position of the car 11 is automatically adjusted in the direction of eliminating the step at that time, so that an accident such as getting a foot caught on the step of the user is caused. Can be prevented.

(Second Embodiment)
Next, the second embodiment will be described.
In the first embodiment, an example of detecting a step from the perspective change of the inter-marker distance Lx on the captured image of the camera 51 has been described. In the second embodiment, a case where a step is detected from a perspective change of the marker size dx on the captured image of the camera 51 will be described.

Now, as shown in FIG. 3, it is assumed that the two markers 33a and 33b are spaced apart from each other with a predetermined distance L on the surface of the landing sill 32. In the second embodiment, the size of one of the markers (for example, the marker 33a) may be known regardless of the distance between the markers 33a and 33b. Therefore, one marker 33a having a predetermined size may be provided at an arbitrary position on the landing sill 32. Further, one marker 33a may be provided at an arbitrary position on the floor surface 21a of the landing 21 around the landing sill 32 as long as it is within the shooting range of the camera 51.

The marker size d shown in FIG. 3 indicates the diameter size of the marker 33a. Further, d0, d1 and d2 shown in FIGS. 5 to 7 are size information of the marker 33a on the captured image of the camera 51, respectively. For example, d0, d1 and d2 are obtained from the coordinates on the image, and have a relationship of d1> d0> d2 depending on the perspective relationship between the camera 51 and the landing sill 32, as in the case of the inter-marker distance Lx.

The operation of the elevator system according to the second embodiment will be described below. Since the processing flow of the entire system is the same as that of FIG. 8, only the step detection processing executed in step S13 will be described here. Further, since the configuration of the elevator system is the same as that in FIG. 4, the description thereof is omitted here.

Similar to the first embodiment, the image processing unit 52 detects the markers 33a and 33b from the image taken by the camera 51 when the car 11 is fully opened, and determines the coordinate positions of the markers 33a and 33b. The included marker information is output to the control unit 53 as a detection result.

Here, in the second embodiment, the step detection unit 531 of the control unit 53 calculates the marker size dx on the image based on the coordinate position of one of the markers 33a and 33b (step S41). ). The step detection unit 531 compares the preset reference size d0 with the marker size dx, and calculates the difference value between d0 and dx (hereinafter referred to as the size difference value) (step S42). The reference size d0 indicates the diameter size of the marker 33a on the image when there is no step.

The step detection unit 531 calculates the step amount corresponding to the size difference value by using a table (not shown) showing the correspondence relationship between the size difference value and the step amount, or by using a mathematical formula showing the correspondence relationship. (Step S43).

Subsequent processing is the same as that of the first embodiment. That is, when a step of a predetermined amount or more is detected between the floor surface 11a of the car 11 and the floor surface 21a of the landing 21, the landing position of the car 11 is adjusted in the direction of eliminating the step at that time. (See steps S14 to S15 in FIG. 8). If the step amount is within the preset notification range, the step amount at that time is notified through the notification unit 54 (see steps S16 to S17 in FIG. 8). It is also possible to notify only the presence or absence of a step.

As described above, according to the second embodiment, even by using the perspective change of the marker size dx on the captured image of the camera 51, the floor surface 11a and the landing of the car 11 can be used as in the first embodiment. The step on the floor surface 21a of 21 can be easily detected.

In addition, this second embodiment may be combined with the first embodiment to perform the step detection process by utilizing both the perspective change of the inter-marker distance Lx and the perspective change of the marker size dx.

(Modification example)
FIG. 11 is a diagram showing the configuration of the car floor surface and the landing floor surface near the entrance / exit of the car 11 according to the modified example, with the car door 25 and the landing door 26 fully open, downward from the upper part of the entrance / exit of the car 11. It shows the state you saw.

In the example of FIG. 11, apart from the two markers 33a and 33b provided on the landing sill 32, a marker 33c is provided on the car sill 46 as a reference marker for step detection. The marker 33c may have the same size as the markers 33a and 33b, or may have a different size. Further, the marker 33c may be, for example, a seal member attached to an arbitrary place, or may be pre-engraved. The marker 33c is preferably a material that can be clearly photographed by the camera 51 without being affected by the surrounding lighting environment or the like.

Here, the marker 33c is provided on one end side of the car sill 46. In this case, in order to improve the step detection accuracy, it is preferable to provide the marker 33c at a position as far as possible from one of the markers 33a and 33b on the landing sill 32 side. In the example of FIG. 11, the marker 33c is arranged on the right end side of the car sill 46 with a predetermined distance M from the marker 33a provided on the left end side of the landing sill 32.

The interval M is, for example, the length from the center of the marker 33a to the center of the marker 33c. The marker 33c may be placed anywhere on the car sill 46 as long as a certain distance M can be secured. Further, as long as it is within the shooting range of the camera 51, it may be provided at an arbitrary location on the floor surface 11a of the car 11 around the car sill 46.

Further, the landing sill 32 does not necessarily require two markers 33a and 33b, and one of the markers is an arbitrary place on the landing sill 32 or an arbitrary floor surface 21a of the landing 21 around the landing sill 32. It suffices if it is provided in a place.

In such a configuration, if the marker 33a on the landing sill 32 side and the marker 33c on the car sill 46 side are detected from the captured image of the camera 51 and the distance between these markers is compared with a preset reference distance, the first Similar to the first embodiment, the presence / absence of a step and the amount of the step can be detected from the perspective change of the distance between the markers.

Further, by providing the marker 33c on the car sill 46 side, even if one of the markers 33a and 33b on the landing sill 32 side is deteriorated or peeled off from the landing sill 32, the step is used by using the marker 33c on the car sill 46 side. It has the advantage that detection can be continued.

According to at least one embodiment described above, it is possible to provide an elevator system that can easily detect a step between the floor surface of the car and the floor surface of the landing.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 ... hoistway, 11 ... car, 11a ... floor surface, 12 ... counterweight, 13 ... main rope, 14 ... hoisting machine, 15 ... elevator control device, 16 ... machine room, 21 ... landing, 21a ... floor surface , 22 ... landing detection device, 23 ... landing inspection board, 24 ... guide rail, 25 ... car door, 26 ... landing door, 27 ... curtain board, 28 ... tail code, 31 ... step detection device, 32 ... landing sill, 33a ... Marker, 33b ... Marker, 33c ... Marker, 34 ... Three-sided frame, 41 ... Front wall, 42 ... Destination floor button, 43 ... Display, 44 ... All door open detector, 45 ... Safety shoe, 46 ... Basket sill , 50 ... Mounting means, 51 ... Camera, 52 ... Image processing unit, 53 ... Control unit, 54 ... Notification unit, 55 ... Communication unit, 56 ... Power supply unit, 61 ... Communication unit, 62 ... Control unit, 521 ... Marker detection Unit, 513 ... Step detection unit, 532 ... Notification control unit.

JP-A-2015-44674 JP-A-2007-145475

The elevator system according to one embodiment includes imaging means, marker detecting means, and step detecting means. The photographing means is provided in the car and photographs the vicinity of the entrance and exit of the car. The marker detecting means detects at least two markers provided on the floor surface of the landing from the image taken by the photographing means when the car lands on the landing on an arbitrary floor. The step detecting means detects the step between the floor surface of the car and the floor surface of the landing based on the distance information between the markers detected by the marker detecting means or the size information of each marker.

Claims (11)

Shooting means to shoot the vicinity of the entrance and exit of the car,
A marker detecting means for detecting at least two markers provided on the floor surface of the landing from an image taken by the photographing means when the car has landed on a landing on an arbitrary floor.
A step detecting means for detecting a step between the floor surface of the car and the floor surface of the landing based on the distance information between the markers detected by the marker detecting means or the size information of each marker is provided. Elevator system featuring what has been done. The step detecting means is
The feature is that the step between the floor surface of the car and the floor surface of the landing is detected by comparing the distance information between the markers detected by the marker detecting means with the predetermined reference distance information. The elevator system according to claim 1. The step detecting means is
By comparing the size information of any of the markers detected by the marker detecting means with the predetermined reference size information, it is possible to detect the step between the floor surface of the car and the floor surface of the landing. The elevator system according to claim 1. The marker detecting means is
In addition to the markers provided on the floor surface of the landing, at least one marker provided on the floor surface of the car is detected as a reference marker.
The step detecting means is
Detecting a step between the floor surface of the car and the floor surface of the landing based on the distance information between the marker of any of the markers provided on the floor surface of the landing and the reference marker. The elevator system according to claim 1. The step detecting means is
The distance information between the marker of each of the markers detected by the marker detecting means and the reference marker is compared with the predetermined reference distance information, and the floor surface of the car and the reference distance are compared. The elevator system according to claim 4, wherein a step with the floor surface of the landing is detected. The elevator system according to any one of claims 1 to 5, further comprising a notifying means for notifying the presence or absence of a step detected by the step detecting means. The notification means is
The elevator system according to claim 6, wherein the elevator system includes the amount of steps detected by the step detecting means to notify the elevator system. The notification means is
The elevator system according to claim 7, wherein the elevator system notifies when the amount of steps detected by the step detecting means is equal to or greater than a preset threshold value. Any one of claims 1 to 5, further comprising a position control means for controlling the position when the car is landed on the landing based on the step detected by the step detecting means. Elevator system described in one. Further provided with a fully open detection means for detecting that the car door is in a fully open state,
The step detecting means is
The elevator system according to any one of claims 1 to 5, wherein when the fully open state of the door is detected by the fully open detecting means, a step detection process using each of the markers is executed. The photographing means, the marker detecting means, the step detecting means, and the notifying means are incorporated in one housing.
The elevator system according to claim 6, wherein the housing is detachably attached to an upper portion near the entrance / exit of the car.

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