EP1686946A1 - Dispositif pour detecter l'environnement de personnes a vision reduite - Google Patents

Dispositif pour detecter l'environnement de personnes a vision reduite

Info

Publication number
EP1686946A1
EP1686946A1 EP04740369A EP04740369A EP1686946A1 EP 1686946 A1 EP1686946 A1 EP 1686946A1 EP 04740369 A EP04740369 A EP 04740369A EP 04740369 A EP04740369 A EP 04740369A EP 1686946 A1 EP1686946 A1 EP 1686946A1
Authority
EP
European Patent Office
Prior art keywords
stylus
light beam
styli
surroundings
visually impaired
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04740369A
Other languages
German (de)
English (en)
Inventor
Thomas Leberer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1686946A1 publication Critical patent/EP1686946A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/06—Walking aids for blind persons
    • A61H3/061—Walking aids for blind persons with electronic detecting or guiding means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/06—Walking aids for blind persons
    • A61H3/061—Walking aids for blind persons with electronic detecting or guiding means
    • A61H2003/063—Walking aids for blind persons with electronic detecting or guiding means with tactile perception

Definitions

  • the invention relates to a device for detecting the surroundings of a visually impaired person.
  • Devices for detecting objects are beispiels- • known, in the form of cameras. These devices generate pictorial acquisition data, namely in the form of the recorded images, which cannot be evaluated by visually impaired people or can only be evaluated with considerable restrictions.
  • devices for displaying the surroundings of a visually impaired person in the form of models are known, which are exhibited, for example, in public places and reproduce streets and buildings.
  • the invention has for its object to provide a device for detecting the surroundings of a visually impaired person, which enables the visually impaired person to get an impression of the environment surrounding this visually impaired person by tactile stimuli.
  • the invention proposes to scan the surroundings with a fan-shaped light beam.
  • This fan of light creates a line on the objects it encounters.
  • This line is distorted depending on the surface design of the objects and their distance, provided that the line is viewed from an angle to the plane in which the light beam is rather runs.
  • the invention therefore furthermore proposes to arrange an image capturing device, for example a camera, at a distance from this plane and to use this image capturing device to capture the course of the reflected light which has been modified from a straight line.
  • This still visual information is converted into tactile information for the visually impaired person.
  • a stylus bar is provided, which consists of a large number of styli arranged side by side. The visually impaired person can grasp these styli and, due to the different height mobility of the individual pins, recreate the shape of the contour that the reflected light beam, ie the aforementioned distorted line, has.
  • the proposed device can be used to reliably display the course of this curb as well as masts of road signs or lanterns, hydrants or the like that are in the way, if necessary. Without providing the visually impaired person with a detailed picture of their surroundings, the proposed device enables a rough preliminary orientation, so that, for example, finding a glass placed on a table top is also simplified.
  • the tactile information can be resolved with the greatest possible accuracy by actuating each individual stylus, so that the vertical mobility of the stylus can be optimally adapted to the actual contour of the reflected light.
  • tactile pins can be also provided, in each case together, for example, a plurality of tactile pins in a group and similar to control, with aller- 'recently results in a correspondingly lower resolution, with WEL rather the gating information the contour of the reflected
  • the probe pins are spring loaded so that they always in an extended STEL arranged lung, in which they project beyond the actual bar 'maximum.
  • the styli can be pressed into the bar against the spring action.
  • the control can provide that a certain depth stop is effected, how far the stylus can be pushed into the bar, or that - even with the same possible depth of insertion - the resistance with which the stylus in can be changed the bar can be pushed in.
  • the user can swipe over the stylus and receive tactile information about the environment captured by the light beam fan.
  • a test circuit can be provided, by means of which the feeler pins are influenced in terms of their vertical mobility, regardless of the actual environment. B. are drawn in against the spring action or are only movable against a high resistance. This allows the user to Check the pins for correct function and prevent dangers ' which could result from the fact that an actually existing obstacle is not displayed due to a faulty function of one or more styli.
  • the user must of course know which area of his surroundings the device detects, that is to say which "viewing direction” it has.
  • the orientation of the device and the orientation of the detection angle at which the device detects the surroundings can advantageously be conveyed to the user by the fact that the The device is arranged on the arm or on the hand of the user. In this way, the device can be controlled and aligned intuitively by the user.
  • the stylus bar is advantageously arranged adjacent to the fingertips of the user, so that the user can press the buttons by slight finger movements.
  • the other essential components of the device such as the light source, the image capture device and the
  • Stylus - be summarized in the form of a glove-like device, so that the device can be easily put on by the user and all essential components are summarized compactly.
  • the energy source can advantageously be separated from the other aforementioned essential components, for example in the form of an energy pack carried in the form of a backpack or belt.
  • the rest of the device carried on the arm or on the hand of the user can be designed to be as light as possible, so that the user tired as little as possible when handling the device.
  • a solar cell can be provided for the energy supply, which, depending on the power requirement of the device, supplies the energy either exclusively or only in addition to to extend the useful life of the energy source otherwise provided, for example the aforementioned energy pack.
  • a laser can advantageously be used as the light source.
  • Such lasers are lightweight, have small structural features, and
  • a digital camera can preferably be provided as the image capturing device.
  • Such digital cameras are also commercially available, accordingly inexpensive and, moreover, can be supplied with small structural dimensions and low weight.
  • the image capturing device may differ also configured radar similar to that of the embodiment as a camera and runtime information detect the light beam, so that these runtime information equivalent to the above-described contour 'evaluated extending the light beam and can be implemented NEN-informa- Tast in the.
  • FIG. 1 shows an object located on a table and gripped by a device according to the invention
  • Fig. 2 shows a device in which the essential components are combined like gloves
  • Fig. 3 on a larger scale than Fig. 2 a stylus.
  • a table top 1 is shown, on which a cylindrical object 2 is located. Both the table top 1 and the object 2 are illuminated obliquely from above with a light beam fan, a line 3 resulting from the fanning out of the light beam, which is shown in dotted lines in FIG. 1.
  • This line runs in a straight line on the table top 1 and is curved on the cylindrical outer surface of the object 2. Due to the height offset between the two rectilinear parts of line 3 and the curved part of line 3, it is also clear that object 2 is further forward than the area of table top 1 where the rest of rectilinear line 3 meets.
  • the curvature of the object 2 is represented by the bend of the curved section of the line 3.
  • Fig. 2 shows a device 4 according to the invention with a
  • a light source 6 in the form of a laser is arranged beneath the glove 5, glowing past the thumb, this laser emitting a fan-shaped light beam rather than a linear one.
  • the light beam is indicated by dotted 7; he hits an object 2.
  • an image capture device 8 is arranged in the form of a digital camera, the image or viewing or detection area lying between two dotted boundary lines 9. As illustrated in FIG. 2, the object 2 lies in the image capture area of the image capture device 8. Due to the height-offset arrangement of the light source 1 and the image capture device 8, that is to say the arrangement of the image capture device 8 outside the plane in which the light beam 7 extends, the results are shown in FIG 1, purely by way of example, illustrated contour profiles of the reflected light lines as a function of the configuration of the detected environment.
  • the light source 6 is arranged below and the image capturing device 8 above the glove 5.
  • the reverse arrangement can also be provided, in which the light source 6 is arranged above the image capturing device 8.
  • Fig. 3 shows schematically such a stylus 10: It consists of the actual bar 11 and a plurality of styli 12, which are axially movable, i.e. vertically movable relative to the bar 11 and different depths in the bar 11 or through the bar 11 can be pressed.
  • Fig. 3 shows the idle state of the stylus 10, in which all styli 12 are extended to the maximum.
  • This idle state can advantageously be maintained without the need for electrical energy, for example by holding the styli 12 spring-loaded in the shown idle position.
  • the individual styli 12 can be lowered to different depths, so that the surfaces of the pins 12 emulate the same contour as line 3 has.
  • the feeler pins 12 are not underneath. to lower to different depths, but to design their resistance to the indentation to different degrees, so that, for example, the middle styli 12, which would represent the higher, curved region of the line 3, would be set comparatively “hard”, that is to say with a comparatively high resistance to the indentation , whereas the two linear areas of line 3, which are lower and lie within the image acquisition area, would have a lower resistance and the corresponding styli 12 would accordingly be set to "softer".
  • Styli 12 can be influenced in each case by the height mobility of the styli 12 by electromagnets.
  • the corresponding analog signals for controlling the electromagnets are generated by the aforementioned control, which evaluates and converts the signals of the image capturing device 8.
  • This controller can preferably have a microprocessor, so that it can be designed to be structurally small and lightweight. So it can be put in the glove if necessary
  • the energy supply can be separated from the device 4 shown in FIG. 2 in particular when comparatively heavy energy storage devices are used, such as, for example, electric batteries or accumulators, and can be carried more conveniently by the user at another location.
  • comparatively heavy energy storage devices such as, for example, electric batteries or accumulators
  • the image capture device 8 can be designed in the form of a commercially available, small, lightweight and inexpensive digital camera. It is relevant that this image capturing device 8 can evaluate the contrasts that are generated with the aid of the light source 6 and that result between the light line and the surroundings. It can therefore be provided, if necessary, to use cameras or similar image capturing devices in particular, which only fulfill comparatively low requirements for proper image reproduction and can accordingly be inexpensive.
  • a major advantage of the proposed device for the user is that spatial information, or at least 2-dimensional information captured at least as an image, is converted into information that is only one row or one line.
  • the device merely provides coarse, quickly processable information that makes it easier for the user to orientate himself in advance in his environment and allows him to grasp the relevant areas of the environment in a more targeted manner, for example with the aids that have also been used up to now by this user, for example manually palpating the environment or palpation using a wand.
  • the device has the advantage that it depends on

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • User Interface Of Digital Computer (AREA)
  • Position Input By Displaying (AREA)
  • Rehabilitation Tools (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un dispositif permettant de détecter l'environnement d'une personne à vision réduite, comprenant une source lumineuse (6) émettant un faisceau lumineux (7) réparti en éventail et un dispositif de détection d'image (8), qui est disposé en dehors du plan du faisceau lumineux en éventail et est orienté dans sa direction. Ledit dispositif comprend également une réglette de palpage (10) comprenant une pluralité de palpeurs (12) disposés les uns à côté des autres, qui peuvent être déplacés en hauteur à différents niveaux, par rapport à la réglette, ainsi qu'une commande qui convertit le cours de la courbe détectée par le dispositif de détection d'image, du faisceau lumineux en éventail touchant l'environnement, en une mobilité en hauteur correspondante des palpeurs. La commande permet d'assurer la régulation de plusieurs groupes de palpeurs ou de chaque palpeur isolé.
EP04740369A 2003-07-02 2004-06-28 Dispositif pour detecter l'environnement de personnes a vision reduite Withdrawn EP1686946A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329935 2003-07-02
PCT/EP2004/006968 WO2005002490A1 (fr) 2003-07-02 2004-06-28 Dispositif pour detecter l'environnement de personnes a vision reduite

Publications (1)

Publication Number Publication Date
EP1686946A1 true EP1686946A1 (fr) 2006-08-09

Family

ID=33559835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740369A Withdrawn EP1686946A1 (fr) 2003-07-02 2004-06-28 Dispositif pour detecter l'environnement de personnes a vision reduite

Country Status (3)

Country Link
EP (1) EP1686946A1 (fr)
DE (1) DE102004032289B4 (fr)
WO (1) WO2005002490A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7755744B1 (en) * 2007-08-15 2010-07-13 Thomas Leberer Environment sensor that conveys information about objects in the vicinity of the visually impaired user
DE102009059820A1 (de) * 2009-12-21 2011-06-22 Dietrich, Karl Werner, Dr., 51519 Orientierungshilfe für Blinde durch den Tastsinn
CN102657572B (zh) * 2012-03-22 2013-11-06 郑州科兴电子信息科技有限公司 电子点阵式智能盲人图像触觉传感装置和传感实现方法

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3592965A (en) * 1967-08-22 1971-07-13 Zaid Diaz Apparatus for converting cathode ray portrayable information to spacial images
DE3840677A1 (de) * 1988-12-02 1990-06-07 Krupp Atlas Elektronik Gmbh Optischer ueberwachungssensor
DE9300256U1 (de) * 1993-01-12 1993-03-25 Schröder, Werner, Prof. Dr., 7637 Ettenheim Blindenstock
DE9415210U1 (de) * 1994-01-26 1994-12-15 Siemens AG, 80333 München Leitgerät
EP0984754B1 (fr) * 1997-04-30 2003-11-26 Maria Ritz Auxiliaire d'orientation pour malvoyants
US6198395B1 (en) * 1998-02-09 2001-03-06 Gary E. Sussman Sensor for sight impaired individuals
US6055048A (en) * 1998-08-07 2000-04-25 The United States Of America As Represented By The United States National Aeronautics And Space Administration Optical-to-tactile translator
DE19853915A1 (de) * 1998-11-23 2000-05-31 Jurca Optoelektronik Gmbh Verfahren zum Erfassen und Darstellen einer dreidimensionalen Struktur sowie Einrichtung zum Durchführen des Verfahrens
DE10140282B4 (de) * 2000-08-23 2007-07-12 Leuze Electronic Gmbh & Co Kg Optoelektronische Vorrichtung
JP2003079685A (ja) * 2001-09-17 2003-03-18 Seiko Epson Corp 視覚障害者歩行用補助具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005002490A1 *

Also Published As

Publication number Publication date
WO2005002490A1 (fr) 2005-01-13
DE102004032289A9 (de) 2007-03-29
WO2005002490A8 (fr) 2005-02-24
DE102004032289A1 (de) 2005-02-17
DE102004032289B4 (de) 2009-09-17

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