JP2012116574A - Wheelchair guidance system of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve usability for a wheelchair user by guiding the exit of the wheelchair user from an elevator cage through the use of a camera installed in the cage.SOLUTION: A wheelchair guidance system of an elevator includes: an X-direction imaging part 15a that is installed on a side plate 14a of a door 12 in the cage 11 and that takes an image of a wheelchair 1 from a lateral side; a Y-direction imaging part 15b that is installed on a side plate 15b on the opposite side of the door 12 in the cage 11 and that takes an image of the wheelchair 1 from a front side; a wheelchair position detecting part 22 that detects a relative positional relationship between the wheelchair 1 and the door 12 on the basis of an X-direction photographing signal of the X-direction imaging part 15a and a Y-direction photographing signal of the Y-direction imaging part 15b; and a notification part 16 that notifies the wheelchair user about guidance for getting off the cage, on the basis of wheelchair distance information output as the result of detection performed by the wheelchair position detecting part 22.

Description

  Embodiments of the present invention relate to a wheelchair guidance system for an elevator that guides a wheelchair user to get off using a camera installed in a car.

  Along with the aging society, the number of wheelchair users is increasing, and there is a demand for improvement of elevator usability for wheelchair users.

  Usually, in a wheelchair-type elevator, a flat mirror or a curved mirror is attached to a side plate facing a door in a car. A wheelchair user can move forward in the forward direction when getting on and get into the car, and use the mirror to get out of the car without changing the direction while getting back using the mirror.

  In recent years, an increasing number of apartment houses have security cameras installed for security purposes. A system that uses this security camera to operate an elevator has also been proposed.

  For example, there is a security camera system for an elevator that uses a security camera installed in a car in order to prevent service degradation caused by misuse of a wheelchair button by a healthy person. This is to determine whether or not the user is a wheelchair user by analyzing the image taken by the security camera. If the user is a wheelchair user, the door opening time is extended, and if the user is not a wheelchair user, the door opening time is not extended and a normal driving service is performed.

  There is also a passenger guidance system for an elevator that detects the position, speed, and direction of a passenger from a captured image of a security camera installed at the elevator hall and prevents the passenger from colliding with a door.

JP 2000-211183 A Japanese translation of PCT publication No. 2008-500309

  In the above-described elevator security camera system, it is possible to eliminate a delay in operation due to an erroneous operation of a wheelchair button, but usability for wheelchair users is not improved.

  Moreover, in the elevator passenger guidance system, the passenger can get in safely by controlling the timing of closing the door based on the position, speed and direction of the passenger. However, since the size of the passenger is not taken into consideration, the door closing control cannot be appropriately performed when the wheelchair is used.

  Here, since a wheelchair user usually gets off the vehicle in a backward direction, there is a high possibility that the wheelchair user will collide with the door pocket of the door, and it is necessary to guide the distance between the door pocket and the wheelchair. In this case, it is common for the rider to get off while checking the rear with a mirror installed in the passenger car. However, getting off using a mirror requires familiarity and proficiency, and is difficult for those who have temporarily used a wheelchair or who have started using a wheelchair.

  Therefore, there is a need for an elevator wheelchair guidance system that uses a camera installed in a car to guide a wheelchair user to get off and improve usability for the wheelchair user.

  The elevator wheelchair guidance system according to the present embodiment is an elevator wheelchair guidance system for guiding a wheelchair user to get out of a car, and is installed on one of the side plates on both sides of the door in the car. X-direction photographing means for photographing the wheelchair inside from the side, Y-direction photographing means installed on the side plate opposite to the door in the car, and photographing the wheelchair in the car from the front, and the X-direction photographing The relative positional relationship between the wheelchair and the door of the car is determined based on the X direction shooting signal of the wheelchair shot by the means and the Y direction shooting signal of the wheelchair shot by the Y direction shooting means. Based on wheelchair position detection means to be detected and wheelchair distance information output as a detection result of the wheelchair position detection means, a wheelchair user in the car Characterized by comprising a notification means for performing notification relating to the getting-off guide for.

FIG. 1 is a block diagram showing a configuration of an elevator wheelchair guidance system according to the present embodiment. FIG. 2 is a diagram illustrating an example of an X-direction image captured by an X-direction imaging unit installed in the car in the embodiment. FIG. 3 is a diagram illustrating an example of a Y-direction image captured by a Y-direction imaging unit installed in the car in the embodiment. FIG. 4 is a diagram for explaining a method for calculating wheelchair distance information in the embodiment. FIG. 5 is a diagram showing an example of a database provided in the notification unit of the wheelchair guidance system in the same embodiment. FIG. 6 is a flowchart showing the processing operation of the X-direction position detection unit provided in the wheelchair position detection unit of the wheelchair guidance system in the same embodiment. FIG. 7 is a flowchart showing the processing operation of the Y-direction position detection unit provided in the wheelchair position detection unit of the wheelchair guidance system in the same embodiment. FIG. 8 is a flowchart showing the processing operation of the wheelchair information processing unit of the wheelchair guidance system in the same embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an elevator wheelchair guidance system according to the present embodiment.

  The elevator wheelchair guidance system in the present embodiment includes a car 11, an elevator operation control unit 21, and a wheelchair position detection unit 22.

  The car 11 moves up and down in the hoistway by driving a hoisting machine (not shown). A door 12 that opens and closes when landing on the destination floor is provided in front of the car 11, and door pockets 13 a and 13 b are provided on both sides of the door 12.

  Here, the left-right direction (opening / closing direction of the door 12) of the car 11 is the X direction, the front-rear direction (direction orthogonal to the opening / closing direction of the door 12) is the Y direction, and the up-down direction (up-and-down direction of the car 11) is the Z direction. And

  In the present embodiment, an X direction imaging unit 15 a and a Y direction imaging unit 15 b are installed in the car 11. The X direction imaging unit 15a is composed of a digital security camera installed on one side plate 14a on both sides of the door 12 in the car 11, and images the inside of the car 11, and images obtained by the photographing are taken in the X direction. Output as an image signal. The Y-direction imaging unit 15b is a digital security camera installed on the side plate 14b on the opposite side of the door 12, images the inside of the car 11, and outputs an image obtained by the imaging as a Y-direction image signal.

  Note that the installation positions of the X-direction imaging unit 15a and the Y-direction imaging unit 15b are adjusted so that the entire car including the car floor can be photographed at a wide angle.

  A notification unit 16 is installed in the car 11. The notification unit 16 is installed on the side plate 14c or a ceiling surface (not shown), and includes a sound generation unit 16a, a display unit 16b, and a database 16c. The sound generation unit 16a, the display unit 16b, and the database 16c are contained in one housing.

  The sound generator 16a is composed of a sound generator such as a speaker, and is used when guidance for getting off the vehicle by the generation of sound. The display unit 16b includes a display device such as a liquid crystal display, and is used when guidance for getting off the vehicle by displaying a message. As will be described later, the database 16c registers information related to sound and display corresponding to wheelchair position information output from the wheelchair information processing unit 24 (see FIG. 5).

  The elevator operation control unit 21 is a unit equipped with a microcomputer or the like, and is installed in an elevator machine room or a hoistway (not shown) and controls the operation of the entire elevator. The elevator operation control unit 21 receives a door opening start signal for opening the door 12 and a door closing start signal for closing the door 12 when the car 11 reaches the destination floor. To the unit 24.

  The wheelchair position detection unit 22 is a unit composed of a microcomputer or the like installed on the elevator machine room or the car 11 (not shown). The wheelchair position detection unit 22 includes an X direction position detection unit 23a, a Y direction position detection unit 23b, and a wheelchair information processing unit 24, and detects a relative positional relationship between the wheelchair 1 and the door 12 in the car 11. . A specific method of position detection will be described in detail later with reference to FIGS.

Next, the operation of this embodiment will be described.
It is assumed that a wheelchair user is in the car 11 now. As described above, the X direction imaging unit 15a and the Y direction imaging unit 15b are installed in the car 11, and the images taken by these imaging units 15a and 15b are the X direction position of the wheelchair position detection unit 22. It is given to the detection unit 23a and the Y-direction position detection unit 23b, respectively.

(A) X direction position detection FIG. 2 is a diagram illustrating an example of an X direction image captured by the X direction imaging unit 15 a installed in the car 11. FIG. 6 is a flowchart showing the processing operation of the X-direction position detection unit 23 a provided in the wheelchair position detection unit 22.

  When the X-direction image signal is input from the X-direction imaging unit 15a (Step A11), the X-direction position detection unit 23a performs image processing by Hough conversion, and detects a circle included in the image as the wheel 2a of the wheelchair 1. (Step A12).

  When a circle corresponding to the wheel 2a of the wheelchair 1 is detected (YES in step A13), the X-direction position detection unit 23a uses a distance conversion algorithm to calculate the distance in the X direction from the wheel 2a to the door pocket 13a of the door 12. (Step A14), and outputs this to the wheelchair information processing unit 24 as X-direction position information (step A15).

This will be specifically described with reference to FIG.
The size of the image captured by the X direction imaging unit 15a is 720 (horizontal) × 480 (vertical) [dot], and the lower left is the coordinate origin (0, 0). Further, 1 [dot] on the image corresponds to 2 [mm] in terms of the actual length (distance) of the object.

  The number of dots in the image is determined by the specifications of the camera, and the actual distance per [dot] on the image is determined by the position where the camera is attached. That is, these are parameters set in advance according to the actual installation situation.

  Using these parameters, the X-direction position of the door pocket 13a of the door 12 in the image captured by the X-direction imaging unit 15a is calculated in advance. Here, it is assumed that X = 710 [dots].

The X-direction position detection unit 23a performs an Hough transform on the X-direction image signal, whereby an equation 280 = (X−400) ² + (Z−180) with a circle having a radius of 280 [dots] and a center of (400, 180). ^{Get 2} . Based on this circle equation and the X-direction position of the door pocket 13a, a difference of 30 [dots] is obtained by the following equation.

Tokuro position-(X position of the center coordinates of the circle + radius)
The X-direction position detection unit 23a performs unit conversion of the difference 30 [dots] to calculate the distance in the X direction with respect to the door pocket 13a of the wheelchair 1 as 30 × 2 = 60 [mm]. The position information is output to the wheelchair information processing unit 24.

  The Hough transform and its algorithm processing are widely known and will not be described in detail here.

(B) Y-direction position detection FIG. 3 is a diagram illustrating an example of a Y-direction image captured by the Y-direction imaging unit 15 b installed in the car 11. FIG. 7 is a flowchart showing the processing operation of the Y-direction position detection unit 23 b provided in the wheelchair position detection unit 22.

  When the Y-direction position detection unit 23b receives the Y-direction image signal from the Y-direction imaging unit 15b, the Y-direction position detection unit 23b performs image processing by Hough conversion to detect a plurality of rectangular regions included in the image. When two or more rectangular areas having a certain size or more are detected and the RGB values representing the color of the image are within a preset range, the tire portions of the wheels 2a and 2b of the wheelchair 1 are detected. Judge that there is.

  The above-mentioned “within the preset RGB values” means that black is indicated when the RGB values are 255, 255, and 255. For example, each value is within the range of “240 to 255”, that is, black. Or a color close to it.

  The “constant size” is, for example, 175 × 10 [dots] in consideration of the standard size of the wheels 2 a and 2 b of the wheelchair 1. That is, the size of the rear wheel of a wheelchair is generally 558.8 [mm] (22 inches) in diameter and 23 [mm] in width, and a small wheelchair has a diameter of 355.6 [mm] (14 inches) and a width of 20 [Mm] is adopted. In accordance with this, the size of the rectangular area to be detected is set to 350 [mm] × 20 [mm] (175 × 10 [dot]).

  For the two rectangular areas farthest from the center of the image among the plurality of rectangular areas thus detected, the distance in the Y direction between the edge of each rectangular area and the door pockets 13a and 13b of the door 12 is calculated using a distance conversion algorithm. And the minimum value is output as Y-direction position information.

This will be specifically described with reference to FIG.
The size of the image captured by the Y-direction image capturing unit 15b is 720 (horizontal) × 480 (vertical) [dot], and the lower left is the coordinate origin (0, 0). Similarly to the X-direction image described above, the actual distance per 1 [dot] on the image is 2 [mm].

Further, the positions of the door pockets 13a and 13b in the image captured by the Y-direction imaging unit 15b are calculated in advance. Here, the left door pocket is Y = 160, and the right door pocket is Y = 560 [dots]. In terms of processing, as shown in FIG. 7, when the Y-direction position detection unit 23b receives the Y-direction image signal from the Y-direction imaging unit 15b (step B11), the Y-direction image signal is subjected to Hough conversion, A plurality of rectangular areas included in the image are detected (step B12).

  When two or more rectangular areas are detected (YES in step B13), the Y-direction position detection unit 23b repeats the following process for all rectangular areas (steps B14a to B14b).

  That is, the Y-direction position detection unit 23b determines whether or not the RGB values of the detected rectangular area are within the range of (R, G, B) = (240 to 255, 240 to 255, 240 to 255). Judgment is made (step B15). If the RGB value is within the above range (YES in step B15), then the Y-direction position detection unit 23b subsequently determines whether the size of the rectangular area is 175 [dots] × 10 [dots] or more set in advance. It is determined whether or not (step B16).

  The rectangular area that does not satisfy either of the color and size conditions is unlikely to be the wheels 2a and 2b of the wheelchair 1, and therefore the subsequent process is not performed (step B17).

  Next, the Y-direction position detection unit 23b selects a rectangular area farthest from the center of the image to the left among the rectangular areas satisfying the color and size conditions as a rectangular area L, and from the center of the image to the right. The rectangular region at the farthest position is set as a rectangular region R (step B18).

  Then, the Y-direction position detection unit 23b calculates the distance 1 between the position of the left edge (Y = 230) of the rectangular area L and the position of the left door 13b (Y = 160) (step B19), and the rectangular area A distance 2 between the position of the right edge of R (Y = 530) and the position of the right door pocket 13a (Y = 560) is calculated (step B20).

Distance 1 = 230-160
= 70 [dots]
Distance 2 = 560−530
= 30 [dots].

  When the distance 1 and the distance 2 are obtained, the Y-direction position detection unit 23b selects the smaller one of the distance 1 and the distance 2 as the distance in the Y direction with respect to the door pocket 13a or 13b of the wheelchair 1, and converts this to unit conversion And output as Y direction position information (step B21). In the above example, since the distance 2 is smaller than the distance 1, 30 [dots] × 2 [mm] = 60 [mm] is output as the Y-direction position information. The reason why the smaller one of the distance 1 and the distance 2 is selected is that the error in the Y-direction position information is small.

(C) Wheelchair Information Processing The X direction position information detected by the X direction position detection unit 23a and the Y direction position information detected by the Y direction position detection unit 23b are given to the wheelchair information processing unit 24. When the wheelchair information processing unit 24 acquires the X-direction position information and the Y-direction position information, the wheelchair information processing unit 24 calculates the distance from the wheelchair 1 to the door pocket 13a or 13b of the door 12 using the three-square theorem.

This will be specifically described with reference to FIG.
FIG. 4 is a diagram for explaining a method for calculating wheelchair distance information.

  Now, description will be made assuming that one wheel 2a of the wheelchair 1 is close to the right door 13a as viewed from the wheelchair 1 side.

  When the wheelchair distance information is L, the X-direction position information is X, and the Y-direction position information is Y, the following formula is established by the three-square theorem.

L ² = X ² × Y ²
The wheelchair distance information L is obtained by substituting the distances obtained as the X direction position information and the Y direction position information into X and Y in this equation. However, when the value of the Y direction position information is negative, it is calculated as 0.

  Further, when the X direction position information is equal to or less than a predetermined value (for example, 30 [mm]), there is a high possibility that the wheelchair 1 is in contact with the door pocket 13a of the door 12. Therefore, the elevator operation control unit 21 and the notification unit 16 A door closing suppression signal for temporarily prohibiting the door closing operation is output to the display unit 16b.

  The notification unit 16 is installed on a side plate or ceiling in the car 11, is housed in a single housing, and includes a sound generation unit 16a and a display unit 16b. When the sound generator 16a receives wheelchair distance information from the wheelchair position detector 22, the sound generator 16a refers to the database 16c and outputs a sound signal corresponding to the wheelchair distance information. When the wheelchair distance information is input from the wheelchair position detection unit 22, the display unit 16b displays a message corresponding to the wheelchair distance information with reference to the database 16c.

FIG. 5 shows an example of the database 16c.
The database 16c provided in the notification unit 16 stores in advance a sound signal generation interval and a message for wheelchair distance information as shown in FIG.

  For example, if the wheelchair distance is in the range of 500 [mm] to 400 [mm], a sound that repeats ON / OFF at 1.2 [s] is output from the sound generator 16a. In addition, if it is in the range of 400 [mm] to 300 [mm], a sound that repeats ON / OFF at 1.0 [s] is output from the sound generator 16a, and then the wheelchair distance information is 300 [mm] to 300 [mm]. When it falls within the range of 200 [mm], a sound that repeats ON / OFF at 0.8 [s] is output from the sound generator 16a. That is, the closer the wheelchair 1 is to the door pocket 13a of the door 12, the shorter the sound generation interval.

  On the other hand, if the wheelchair distance is in the range of 500 [mm] to 400 [mm], a message “Please be careful” is displayed on the display unit 16b. If the wheelchair distance information is less than 400 [mm] and more than 300 [mm], the message “Please be careful” is displayed, and then the wheelchair distance information is less than 300 [mm] and within the range of 200 [mm] or more. When entering, a message such as “I will collide with several tens of centimeters” is displayed on the display unit 16b. That is, the closer the wheelchair 1 is to the door pocket 13a of the door 12, the stronger the warning by the message.

  In addition, when the door closing suppression signal is input from the wheelchair position detection unit 22, the notification unit 16 displays a message such as “The door is open because the wheelchair and the door may contact” on the display unit 16b. . At that time, the sound generator 16a may generate a continuous sound to call attention.

Here, the flow of processing of the wheelchair information processing unit 24 will be described.
FIG. 8 is a flowchart showing the processing operation of the wheelchair information processing unit 24. Assume that a wheelchair user who is in the car 11 gets off the destination floor.

  The wheelchair information processing unit 24 determines whether or not the X direction position information is input from the X direction position detection unit 23a and the door opening start signal is input from the elevator operation control unit 21 (step C11).

  The reason why the input of the X-direction position information is determined is to confirm the presence of the wheelchair 1 in the car 11. It is also possible to determine the input of Y direction position information. The reason for determining the input of the door opening start signal is to confirm that the door 12 has been opened.

  When the X direction position information and the door opening start signal are input (YES in Step C11), the wheelchair information processing unit 24 guides the wheelchair user to get off as follows.

  That is, first, the wheelchair information processing section 24 reads the X direction position information output from the X direction position detection section 23a and the Y direction position information output from the Y direction position detection section 23b (step C12). If the value of the X direction position information is 30 [mm] or less (YES in step C13), the wheelchair information processing unit 24 sends a door closing suppression signal to the elevator operation control unit 3 and the notification unit 16. (Step C19).

  As a result, the elevator operation control unit 3 temporarily prohibits the door 12 from being closed, and the notification unit 16 displays a message, for example, “I will collide with several tens of centimeters”. Notify the danger of collision.

  On the other hand, if the value of the X direction position information is longer than 30 [mm] (NO in Step C13), the wheelchair information processing unit 24 determines whether or not the value of the Y direction position information is negative (Step C14). ). If the value of the Y-direction position information is negative (YES in step C14), the wheelchair information processing unit 24 sets the Y-direction position information to zero (step C15), and uses the above-described three square theorem, The distance from the wheelchair 1 to the door pocket 13a or 13b of the door 12 is calculated as wheelchair distance information (step C16).

  When the value of the Y direction position information is not negative (NO in Step C14), the wheelchair information processing unit 24 calculates the wheelchair distance information using each value of the Y direction position information and the X direction position information as it is. (Step C16).

  When the wheelchair distance information is obtained in this way, the wheelchair information processing unit 24 outputs this to the notification unit 16 (step C17). As described above, the notification unit 16 reads out the relevant sound and display information from the database 16c based on the wheelchair distance information, and guides the wheelchair user to get off through the sound generation unit 16a and the display unit 16b.

  Such a process is repeated until a door closing start signal is output from the elevator operation control unit 3 (step C18). As a result, until the wheelchair user in the car 11 gets off, guidance for getting off by sound and display is continuously performed.

  As described above, according to the present embodiment, a wheelchair guidance system for an elevator that improves the usability for a wheelchair user by guiding a wheelchair user to get off using a camera installed in a car is provided. be able to.

  In the above embodiment, the X direction imaging unit 15a and the Y direction imaging unit 15b (security camera) that output digital image signals are used. However, the X direction position detection unit 23a and the Y direction position of the wheelchair position detection unit 22 are used. If an interface capable of inputting an analog image signal is provided in the detection unit 23b, an X-direction imaging unit 15a and a Y-direction imaging unit 15b that output an analog image signal can be used.

  In the above embodiment, the database 16c in the notification unit 16 previously stores and reproduces information related to sound and table separately. However, video data including audio and images is stored in advance. You may make it reproduce. In this case, a display device having a speaker function is used as the display unit 16b.

  This embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The 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 equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Wheelchair, 2a, 2b ... Wheel, 11 ... Car, 12 ... Door, 13a, 13b ... Door bag, 14a-14c ... Side plate, 15a ... X direction imaging part, 15b ... Y direction imaging part, 16 ... Notification part, 16a ... Sound generation unit, 16b ... Display unit, 16c ... Database, 21 ... Elevator operation control unit, 22 ... Wheelchair position detection unit, 23a ... X direction position detection unit, 23b ... Y direction position detection unit, 24 ... Wheelchair information processing Department.

Claims (8)

In the elevator wheelchair guidance system that guides the wheelchair users to get out of the car,
X direction photographing means installed on one of the side plates on both sides of the door in the car, and photographing the wheelchair in the car from the side;
Y direction photographing means installed on the side plate on the opposite side of the door in the car and photographing the wheelchair in the car from the front;
Based on the X-direction imaging signal of the wheelchair imaged by the X-direction imaging means and the Y-direction imaging signal of the wheelchair imaged by the Y-direction imaging means, the wheelchair and the car door relative to each other. A wheelchair position detecting means for detecting a correct positional relationship;
A wheelchair for an elevator, comprising: a notification means for notifying a wheelchair user in the car based on wheelchair distance information output as a detection result of the wheelchair position detection means; Guidance system. The wheelchair position detection means is
Based on the X-direction image signal obtained by the X-direction imaging means, a circle included in the image is detected as a wheel of a wheelchair in the car, and X from the wheel to the door pocket of the car door X-direction position detecting means for calculating the direction distance as X-direction position information;
Based on the Y-direction image signal obtained by the Y-direction image pickup means, at least two rectangular areas included in the image are detected, and these rectangular areas have a preset color and have a certain size. Y-direction position detecting means for determining, as the Y-direction position information, the distance in the Y direction from the wheel to the door pocket of the door of the car when it is determined that the wheel portion is a tire portion of the wheelchair in the car. ,
Based on the X-direction position information output from the X-direction position detection means and the Y-direction position information output from the Y-direction position detection means, the distance from the wheelchair wheel to the door pocket of the car door is determined. The elevator wheelchair guidance system according to claim 1, further comprising: wheelchair information processing means that calculates wheelchair distance information and outputs the information to the notification means. Elevator operation control means for controlling the opening and closing of the door of the car,
The wheelchair information processing means
After the landing of the car on the destination floor, during the period from when the door opening start signal is output from the elevator operation control means to when the door closing start signal is output, the X direction position information or the Y direction position The elevator wheelchair guidance system according to claim 2, wherein the wheelchair distance information is recalculated and output to the notification means according to a change in information. The wheelchair information processing means
The door closing suppression signal for temporarily prohibiting the door closing operation of the car door when the X direction position information is equal to or less than a predetermined value is output. Elevator wheelchair guidance system. The notification means is
With sound generation means installed in the car,
The sound generation means generates a sound based on the wheelchair distance information output from the wheelchair information processing means, and the sound generation interval is shortened as the wheelchair approaches the door of the car. Item 4. The elevator wheelchair guidance system according to Item 2 or 3. The notification means is
With sound generation means installed in the car,
When the door closing suppression signal is output from the wheelchair information processing means, the sound generation means notifies the situation that the door is open to avoid contact between the wheelchair and the car door. The elevator wheelchair guidance system according to claim 4 characterized by things. The notification means is
With display means installed in the car,
Displaying a message on the display means based on the wheelchair distance information output from the wheelchair information processing means, and changing the content of the message displayed on the display means as the wheelchair approaches the door of the car The elevator wheelchair guidance system according to claim 2 or 3, characterized by the above. The notification means is
With display means installed in the car,
When the door closing suppression signal is output from the wheelchair information processing means, the display means notifies the situation of the door opening to avoid contact between the wheelchair and the car door. The elevator wheelchair guidance system according to claim 4.

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