JPH061546A - Elevator control device with operational specification for wheel chair - Google Patents

Abstract

PURPOSE:To render smooth services to wheel chair users by clearly judging whether or not any wheel chair user is in a cage, and thereby prohibiting an elevator from being actuated when no wheel chair user is found to have been in the cage. CONSTITUTION:The output of a proper signal to an automatic elevator operation control device for wheel chairs after the existence of any wheel chair user, the number of wheel chair users and their intention in a front space of elevator hatch doors 5 and 6 have been recognized, eliminates the actuation of a hall button 7 provided for the hall side, and allows the processes of elevator operations for the wheel chair users to be smoothed out. This is a control method which clearly judges whether or not any wheel chair user is in the cage, and prohibits the elevator from being actuated when no wheel chair user is found to have been in the cage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an elevator with wheelchair driving specifications.

[0002]

2. Description of the Related Art Wheelchair driving by an elevator with normal wheelchair driving specifications has been a control method that is established by pushing a wheel button for wheelchairs provided on the hall side.

Conventionally, as described in JP-A-2-43195, automatic door control has been proposed in which a sensor is used to detect a human body to open and close the door. However, nothing is described about using this control method for automatic driving control of an elevator with wheelchair specifications.

[0004]

The above-mentioned prior art is a control method that is established by a wheelchair user pressing a wheelchair hall button in front of an elevator hall. A general elevator has a problem that a general user gets into the elevator earlier than a wheelchair user when a large number of general users are involved due to a ride control system, and the wheelchair user cannot get into the elevator.

[0005]

In order to achieve the above object, the presence, number and intention of wheelchair users in a space in front of an elevator hatch door are clearly recognized and an appropriate signal is sent to the elevator wheelchair automatic driving control. For the purpose of creating a method and device that contributes to the wheelchair, the wheelchair wheel buttons provided on the hall side are not operated and the assumption up to wheelchair driving is smoothed. If the passenger does not have a clear judgment as to whether or not there is a wheelchair, a smoother service can be provided to wheelchair users because the elevator does not start.

[0006]

According to the present invention, the presence or absence of a wheelchair user in the space in front of the elevator and in the car is memorized by the sensor, so that the wheelchair user can drive the wheelchair only by operating the hall button for the wheelchair. A control method that could not be established is a control method that enables wheelchair users to drive even if the wheelchair user does not press the hall button. Also, it is possible to clearly judge whether the wheelchair user is in the car or not. This is a control method in which the elevator is not started when the passenger is not riding.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 and 2, an entrance 2 to the elevator is stopped on the front surface 1 of the elevator, and a car 4 of the elevator is stopped at the position of the entrance 2. The hatch door door plate is shown at 5 and the cage door door plate at 6. The indicator and the general-purpose hole button are indicated by 7.

An infrared camera 8 having an objective lens 8.1 is attached to the corners of the three-way frame and the ceiling of the car. One infrared surface reflector 9 is attached to each of the lower side of the three-sided frame and the car inner side plate.
Infrared rays toward the front space, front space surface 10,
It emits parallel to the floor 21 of the car.

In FIG. 3 (a), an infrared camera 8 attached to a camera holder 11 and a control and evaluation unit 12 are installed above the entrance of an elevator and above the inside of a car. A wheelchair 13 and a wheelchair user 14 are present on the front space surface 10, and the wheelchair user 14 moves in the X direction toward the elevator front surface 1 and moves to the inner floor of the car. The front space surface 10 and the car floor 21 are Y
It is divided into zones 9.1 to 9.4. Infrared rays 3.1 emitted from the infrared ray surface reflector 9 which shows the camera axis line 20 hit the wheelchair 13 and the wheelchair user 14 existing on the front space surface 10, and are partially reflected by the infrared ray camera 8 to be reflected. Is biased towards.

In FIG. 3B, the X zone is defined by 16
The peripheral green of the image is indicated by 17. FIG. 4 shows a photographic lens 8.1, an LCD (liquid crystal display) micro shutter 8.2 and an infrared filter 8.4. The LCD micro-shutter 8.2 has a vertical closed column 8.8, and also the vertically arranged CCD (charge coupled device) line image sensor 8.5 has a sensor cell 8.6. The infrared filter 8.4 only transmits the reflected infrared 3.1, so that only the reflected image 15 is projected on the front surface of the LCD micro-shutter 8.2.

The LCD micro-shutter 8.2 has individually controllable, for example 50 pillars 8.7, which are driven sequentially at a constant timing, thereby causing a periodical movement. A vertical slit opening that allows light traveling in the horizontal direction to pass through is created.

The scanning speed can be chosen very low, since it is not necessary to obtain a flicker-free image for the observer, for example a speed of less than 10 images per second is obtained, where By image it is understood that the slit opening is obtained completely horizontally across the LCD micro-shutter 8.2. Due to such scanning speed, the amount of data becomes very small, and the obtained data can be processed in parallel by a special processor system or a processor system installed in the elevator controller.

The image columnar portion thus scanned is deflected by the cylindrical lens 8.3 and both are projected on the same position on the CCD line image sensor 8.5. The CCD line image sensor 8.5 is called continuously, that is, every time the image columnar portion is projected, and is switched to a standby state in preparation for the next image columnar portion. The read value is once stored and then rewritten by later writing. Now, assume that the vertically arranged CCD line image sensor 8.5 has at least 250 sensor cells 8.6 and the LCD micro shutter 8.2 has not more than 50 columns 8.7. The resolution in the X direction is 5 times or more that in the Y direction. Therefore, an object moving in the X direction toward the elevator front surface 1 is detected more than five times more sensitively than an object moving in the Y direction, that is, parallel to the elevator front surface 1. Moreover, in the Y direction, the reflected image 15 of the moving object is always projected on the same sensor cell 8.6 in the CCD image sensor 8.5, from which it can easily be deduced that this object does not approach the entrance.

The corresponding binary image data, in combination with the instantaneous position of the columnar opening, is the entry plane 1 of the wheelchair user.
Can be interpreted as a movement parallel to.

In FIG. 5, the front space is designated as a raster to which the Y zones 9.1 to 9.4 and the X zone 16 correspond (the raster does not exist, and is shown only for explaining the image distortion and its effect). 7. Infrared filter drawn on surface 10 and 8.
If 4 was removed from the front of the LCD microshutter 8.2, the raster image shown in FIG. 5, ie the vanishing point perspective, would be projected on the front of the LCD microshutter 8.2. Corresponding to this distortion, Y zones 9.1 to 9.4
Are projected onto the projection plane 18 as distorted Y zones 9/11, 9.21, 9.31 and 9.41 having very different widths from each other. From this it is clear that the near Y zone 9.1 is associated with many times more sensor cells 8.6 than the far Y zone 9.4. The actual effect is
A reflection image 15 derived from a wheelchair user 14 moving at a constant speed in the X direction toward the elevator front surface 1 and the car is obtained, and the reflection image 15 is a CCD line image sensor 8.5 image on the projection plane 18. As the distance to the elevator front surface 1 and the inside of the car 25 decreases, the vehicle moves at a speed that continuously increases in response to the distortion. That is, the detection system also has a distance-dependent sensitivity. Although weaker,
This sensitivity also exists for object movement in the Y direction. In general, the resolution in the X direction is 5 times that in the Y direction, and the resolution and sensitivity are gradually increased as the distance to the elevator front surface 1 and the inside of the car 25 is decreased.

The infrared camera 8 arranged at the elevator entrance 2 and in the upper part of the car is tilted downwards, for example at an angle of 45 degrees, which also corresponds to the image acceptance angle. The camera holder 11 is very important in that the predetermined angle corresponding to the front space surface 10 and the in-car space surface 21 of the camera 8 is adjusted by the holder 11, and the predetermined angle directly defines the degree of distortion. , And affects the size and position of the front space surface 10 to be monitored. Due to the size and position of the front space surface 10 and the in-car space surface 21, care must be taken to prevent vertical sloping surfaces, such as the opposite wall, from entering the image. Infrared 3.1
The objects present inside reflect infrared 3.2.
The correspondingly inclined surface part of the object gives a total reflection, and the other substantially vertical surface part towards the infrared 3.1 gives a partial reflection. A partial reflection 3.2 of the infrared light 3.1 from the almost vertical surface part of the wheelchair user is possible to reach the camera, because the very small irregularities on the surface cause diffuse reflection and thus the infrared radiation of the object. All surface parts which are present in 3.1 and point towards the infrared 3.1 are clearly imaged in the camera 8. Light other than infrared rays does not enter the LCD micro-shutter 8.2, so that at the same time as the start of image processing, only two kinds of image signals, that is, infrared rays or not, namely binary image data, are generated. Therefore, the infrared sensitivity is fixed to a very small limit value, in which case especially the wavelengths of the infrared rays 3.1, 3.2 emitted by the infrared surface radiator 9 are taken into account.

The operation of the embodiment having the above construction will be described with reference to FIG.

A wheelchair user is discriminated by a sensor on the entire elevator entrance, and it is confirmed that the wheelchair user can get on the elevator, and the wheelchair driving is registered.

Next, after confirming that the wheelchair user has got into the car by the sensor in the car, the elevator is activated to the destination floor. If the wheelchair user does not get on the assumption, the announcement will be broadcast. According to the sentence, general customers are dropped off, and wheelchair users are given priority service.

If this device is attached to the group management elevator and the wheelchair user gets on another elevator, it is possible to cancel the wheelchair call registration by the control method explained in FIG.

The control and evaluation can be carried out in a special evaluation unit 12 or can also be carried out by a processor system installed for elevator control.

[0023]

According to the present invention, the presence of wheelchair users in the space in front of the elevator hatch door, the number and intention of the wheelchair users are clearly recognized, and a proper signal is controlled to automatically drive the elevator wheelchair. If you do not operate the wheelchair button on the wheelchair to smooth the assumption up to wheelchair driving, and if the user of the wheelchair does not clearly judge whether you are in the car or not,
Since the elevator does not start, wheelchair users can be provided with a smoother service.

[Brief description of drawings]

FIG. 1 is a perspective view of the front of an elevator doorway and the inside of a car.

FIG. 2 is a perspective view of the front of an elevator doorway and the inside of a car.

FIG. 3 is an explanatory diagram of an infrared camera attached to a camera holder and a control and evaluation unit above an entrance and a car of an elevator.

FIG. 4 shows a photographic lens, an LCD (liquid crystal display) micro shutter, and an infrared filter. An explanatory view showing a CCD (charge coupled device) line image sensor.

FIG. 5 is an explanatory diagram showing a raster to which a Y zone and an X zone correspond.

FIG. 6 is a flowchart of control according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Front of elevator entrance, 2 ... Elevator entrance,
3.1 ... Infrared, 4 ... Basket, 5 ... Hatch door, 6 ... Cage door, 7 ... Indicator, Hall button, 8 ... Infrared camera, 8.1 ... Objective lens, 9 ... Surface reflector, 10 ... Front space surface.

Claims (6)

[Claims] 1. A method for automatically controlling a car call operation for a wheelchair user in a wheelchair elevator including an elevator capable of transporting a wheelchair and an infrared camera capable of detecting a wheelchair user, wherein the wheelchair operation is in front of an elevator door. The wheelchair user, which is controlled depending on the existence and behavior of the wheelchair user in the space, irradiates infrared rays to the wheelchair user present on the front space surface of the elevator, and the infrared ray reflection caused by the elevator user irradiated with the infrared rays A signal for controlling the car call operation for the wheelchair user is generated in the control and processing unit by the camera, and the infrared camera determines whether the wheelchair user is in the car or not. If you are not on the elevator, you must confirm that you are on the service by broadcasting and the elevator will Control method for an elevator with wheelchair operation specification which is characterized by being configured so as not to dynamic. 2. The wheelchair user in the space in front of the elevator and in the car according to claim 1, wherein the surface-radiation infrared rays are radiated in stripes, and the height of the stripes corresponds to that of the wheelchair user. The wheelchair user is directed toward the infrared, infrared reflection from the surface portion irradiated with the infrared in the infrared camera, projected a typical reflected image on the object,
The processing and control unit is a control method for an elevator with wheelchair-driving specifications that detects the contour of the reflected image and its change over time. 3. The contour of a reflection image, which is typical for problem solving, and its change with time are stored as binary image data, and stored again as necessary in a continuous learning process. A control method for an elevator with wheelchair-driving specifications used as a comparison base when determining whether a wheelchair user is present in the space in front of an elevator or in a car. 4. The method of controlling an elevator with wheelchair-driving specifications according to claim 1, wherein the infrared camera sequentially receives two different images, an image by a wheelchair user and an image by a wheelchair user. 5. A wheelchair according to claim 1, 2, 3 or 4, wherein the image data of the image reception not by infrared rays is subtracted from the image data of the image reception by infrared rays and binary image data representing a difference is generated. Elevator control method with operating specifications. 6. The method of controlling an elevator with wheelchair driving specifications according to claim 1, 2, or 3, wherein a difference between a contour of a reflection image, which is typical for solving the problem, and its change over time is stored as binary image data.