DE3544047A1 - Apparatus and method as an orientation aid to the blind and those with impaired vision using the ultrasound pulse echo method - Google Patents

Apparatus and method as an orientation aid to the blind and those with impaired vision using the ultrasound pulse echo method

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Publication number
DE3544047A1
DE3544047A1 DE19853544047 DE3544047A DE3544047A1 DE 3544047 A1 DE3544047 A1 DE 3544047A1 DE 19853544047 DE19853544047 DE 19853544047 DE 3544047 A DE3544047 A DE 3544047A DE 3544047 A1 DE3544047 A1 DE 3544047A1
Authority
DE
Germany
Prior art keywords
blind
definable
orientation aid
those
pulse echo
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Withdrawn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
DE19853544047
Other languages
German (de)
Inventor
Hanns Rump
Udo Kloss
Hans-Walter Schockenbaum
Rudolf Broer
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
Priority to DE19853544047 priority Critical patent/DE3544047A1/en
Publication of DE3544047A1 publication Critical patent/DE3544047A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H3/00Appliances for aiding patients or disabled persons to walk about
    • A61H3/06Walking aids for blind persons
    • A61H3/068Sticks for blind persons
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/08Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H3/00Appliances for aiding patients or disabled persons to walk about
    • A61H3/06Walking aids for blind persons
    • A61H3/061Walking aids for blind persons with electronic detecting or guiding means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Rehabilitation Therapy (AREA)
  • Physical Education & Sports Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Pain & Pain Management (AREA)
  • Epidemiology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Rehabilitation Tools (AREA)

Abstract

The invention describes an apparatus which provides an orientation aid to the blind and those with impaired vision. A miniaturised ultrasound pulse echo time evaluation unit is placed on the cane of the blind person such that the unit monitors the upper region. The invention describes some technical novelties in this connection.

Description

Es sind vielfach Geräte vorgeschlagen worden, die mit Hilfe von kurzen Ultraschall-Impulsen Blinden und Seh­ behinderten eine Orientierungshilfe geben sollten. Es wird beispielsweise auf die sogenannten Ultraschall­ brillen verwiesen, die von verschiedenen Firmen schon seit längerem angeboten werden.Devices have been proposed in many cases with With the help of short ultrasound impulses blind and sight should provide guidance for the disabled. For example, it is called ultrasound glasses referenced by different companies have been offered for a long time.

Diesen Geräten ist gemeinsam, das kurze Ultraschall- Impulse ausgesand werden, die von einem Hindernis re­ flektiert werden und von einem der Vorrichtung zuge­ ordneten Empfänger empfangen und ausgewertet werden. Üblich ist dabei, daß diese empfangenen Impulse in irgendeiner Form in akustische Signale umgesetzt werden.What these devices have in common is the short ultrasound Impulses are emitted by an obstacle re be flexed and supplied by one of the device ordered receiver can be received and evaluated. It is common that these received impulses in be converted into acoustic signals in any form.

Bekannt sind Geräte, die in Form einer Brille ausge­ bildet sind. Weiter bekannt sind Geräte, die ähnlich wie eine Taschenlampe gehalten werden. Bekannt sind weiter Geräte, bei denen die Distanz zum Hindernis taktil angezeigt wird.Devices are known in the form of glasses forms are. Also known are devices that are similar to a flashlight to be held. Are further known Devices where the distance to the obstacle is tactile is shown.

Die Erfindung beschreibt ein Gerät, dessen technische Funktion auf die Größenordnung etwa einer Zigaretten­ schachtel reduziert wird, und das so am Langstock des Blinden befestigt wird, daß der Ultraschallstrahl schräg nach oben gerichtet ist. Damit wird erreicht, daß Hindernisse in Bodennähe, wie z. B. Bordsteinkanten, vom Blinden mit Hilfe seines Stockes zuverlässig er­ faßt werden. Gleichzeitig werden durch den nach oben gerichteten Ultraschallstrahl Hindernisse erfaßt, die sich im Bereich der oberen Körperhälfte befinden und nicht zwangsläufig vom Stock betastet werden können. The invention describes a device, the technical Function on the order of a cigarette box is reduced, and so on the long pole of the Blind people attached that ultrasound beam is directed obliquely upwards. This ensures that Obstacles near the ground, such as B. curbs, from the blind man with the help of his stick be grasped. At the same time, by going up directed ultrasound beam detects obstacles that are in the area of the upper half of the body and cannot necessarily be touched by the stick.  

Als Beispiel sei auf einen querstehenden LKW ver­ wiesen, bei dem der Blinde zwar mit dem Stock nichts fühlen würde, allerdings sich evtl. im Brust- und Ge­ sichtbereich an den Aufbau des LKW verletzten könnte.As an example, refer to a truck standing sideways in which the blind man with the stick has nothing would feel, but possibly in the chest and Ge visible area on the structure of the truck.

Die technische Lösung der erfindungsgemäßen Apparatur verwendet das durchaus bekannte Ultraschall-Impuls- Echo-Laufzeitverfahren. Neu dagegen ist der Gedanke, die Distanz in eine quasi musikalische Tonfolge zu übersetzen, bei der die Tonhöhe eines Tongenerators in Abhängigkeit von der Distanz in Schritten von etwa 10 cm so umgeschaltet wird, daß ein Tonsprung entsteht, der in etwa einen musikalischen Ton entspricht. Der Vorteil dieses Verfahrens ist, daß die Tonhöhe auch von unmusikalischen Menschen aufgrund des Sprunges ein eindeutiges Maß für die Annäherung an ein Hindernis ist.The technical solution of the apparatus according to the invention uses the well-known ultrasonic pulse Echo runtime method. What is new, however, is the idea the distance into a quasi musical musical sequence translate at the pitch of a tone generator depending on the distance in steps of approximately 10 cm is switched so that a sound jump occurs, which roughly corresponds to a musical tone. The advantage of this procedure is that the pitch too by unmusical people because of the jump a clear measure of the approach to an obstacle is.

Zu diesem Zweck wurde eine Schaltung nach Fig. 1 ein­ gesetzt. Ein weiteres erfindungsgemäßes Merkmal ist die Tatsache, daß alle im Gerät genutzten Zeiten von einem einzigen Taktgenerator abgeleitet werden. Der Vorteil ist, daß dieser komplizierten Verschachtlungen damit digital und somit sehr stabil erzeugt werden können, ohne das großer Abgleichaufwand entsteht. Die Schaltung ist in Fig. 2. dagestellt.For this purpose, a circuit according to Fig. 1 was set. Another feature of the invention is the fact that all times used in the device are derived from a single clock generator. The advantage is that this complicated nesting can be generated digitally and therefore very stably without the need for a large adjustment effort. The circuit is shown in Fig. 2.

Weiter wird auf die erfindungsgemäße Neuheit der Be­ festigung am Stocke des Blinden verwiesen. Erfindungs­ gemäß strahlt das Gerät stets in einem Winkel von etwa 45° nach schräg oben ab. Die Vorteile sind be­ reits erwähnt worden. Der Überwachungsbereich wird in Fig. 3 dagestellt.Furthermore, reference is made to the novelty of the fastening according to the invention on the stick of the blind man. According to the invention, the device always radiates at an angle of approximately 45 ° upwards. The advantages have already been mentioned. The monitoring area is shown in Fig. 3.

Claims (6)

1. Apparat und Verfahren zum Zwecke der Orientierungs­ hilfe für Blinde und Sehbehinderte mit Hilfe eines Ultraschall-Echo-Laufzeit-Distanzmeßgerätes dadurch gekennzeichnet, daß die Distanz in eine akustisch wahrnehmbare Tonfrequenz übersetzt wird.1. Apparatus and method for the purpose of orientation aid for the blind and visually impaired with the help of an ultrasound echo time-of-flight distance measuring device, characterized in that the distance is translated into an acoustically perceptible tone frequency. 2. Apparat und Verfahren nach Anspruch 1 dadurch ge­ kennzeichnet, daß die Tonhöhe des Tonfrequenzsignals sich nicht kontinuierlich verändert, sondern in de­ finierbaren Sprüngen, die einer definierbaren Distanz­ veränderung entsprechen springen, sodaß eine quasi­ musikalische Tonfolge bei Annäherung an das Ziel ent­ steht.2. Apparatus and method according to claim 1 thereby ge indicates that the pitch of the audio frequency signal does not change continuously, but in de definable jumps that are a definable distance change correspond to jump, so a quasi musical tone sequence when approaching the target ent stands. 3. Apparat und Verfahren nach Anspruch 1 u. 2 dadurch gekennzeichnet, daß alle Frequenzen und Zeiten der erfindungsgemäßen Vorrichtung von einem einzigen Frequenzgenerator durch Teilung abgeleitet werden.3. Apparatus and method according to claim 1 u. 2 thereby characterized that all frequencies and times of device according to the invention from a single Frequency generator can be derived by division. 4. Apparat und Verfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß das Gerät in einem Miniaturge­ häuse so am Langstock des Blinden befestigt wird, daß das Gerät nach schräg oben abstrahlt und dadurch den oberen Bereich überwacht.4. Apparatus and method according to claim 1 to 3 thereby characterized in that the device in a miniature ge is attached to the long pole of the blind, that the device emits obliquely upwards and thereby monitors the upper area. 5. Apparat und Verfahren nach Anspruch 1 bis 4 dadurch gekennzeichnet, daß das Gerät mit einer akustischen Batteriekontrolle ausgerüstet ist, die bei Unter­ schreiten einer definierbaren Batteriespannung die Funktion des Gerätes außer Betrieb nimmt und ein ein­ deutiges akustisches Signal zum Zwecke der Funktions- Warnung ausstrahlt. 5. Apparatus and method according to claim 1 to 4 thereby characterized in that the device with an acoustic Battery control is equipped at Unter a definable battery voltage Function of the device decommissioning and on clear acoustic signal for the purpose of functional Warning emits.   6. Apparat und Verfahren nach Anspruch 1 bis 5 dadurch ge­ kennzeichnet, daß das Gerät drehbar am Stock befestigt ist und somit auch horizontal arbeiten kann.6. Apparatus and method according to claim 1 to 5 thereby ge indicates that the device is rotatably attached to the stick is and can therefore work horizontally.
DE19853544047 1985-12-13 1985-12-13 Apparatus and method as an orientation aid to the blind and those with impaired vision using the ultrasound pulse echo method Withdrawn DE3544047A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853544047 DE3544047A1 (en) 1985-12-13 1985-12-13 Apparatus and method as an orientation aid to the blind and those with impaired vision using the ultrasound pulse echo method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853544047 DE3544047A1 (en) 1985-12-13 1985-12-13 Apparatus and method as an orientation aid to the blind and those with impaired vision using the ultrasound pulse echo method

Publications (1)

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DE3544047A1 true DE3544047A1 (en) 1987-06-19

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743696A1 (en) * 1987-12-18 1989-06-29 Kolbatz Klaus Peter Orientation aid for blind persons
DE4004438A1 (en) * 1990-02-14 1991-08-22 Manfred Laschuetza Specially equipped walking stick for blind person - gives all round acoustic picture of immediate area and direction and range of nearby objects
DE4339997A1 (en) * 1993-11-24 1995-06-01 Hossein Zahedi Combined radio cassette and obstacle locator for blind people
WO1996025135A1 (en) * 1995-02-17 1996-08-22 Horst Meiners Cane for the blind
US6298010B1 (en) 1997-04-30 2001-10-02 Maria Ritz Orientation aid for the blind and the visually disabled
CN105943325A (en) * 2016-06-07 2016-09-21 北京邮电大学 Blind guiding equipment
EP3292853A1 (en) * 2016-09-09 2018-03-14 ams AG Portable environment sensing device
US10182959B2 (en) 2015-07-23 2019-01-22 Enaay Tecnologías Sa De Cv Spatial sensing device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743696A1 (en) * 1987-12-18 1989-06-29 Kolbatz Klaus Peter Orientation aid for blind persons
DE4004438A1 (en) * 1990-02-14 1991-08-22 Manfred Laschuetza Specially equipped walking stick for blind person - gives all round acoustic picture of immediate area and direction and range of nearby objects
DE4339997A1 (en) * 1993-11-24 1995-06-01 Hossein Zahedi Combined radio cassette and obstacle locator for blind people
WO1996025135A1 (en) * 1995-02-17 1996-08-22 Horst Meiners Cane for the blind
DE19505402A1 (en) * 1995-02-17 1996-08-22 Meiners Horst Cane
US6298010B1 (en) 1997-04-30 2001-10-02 Maria Ritz Orientation aid for the blind and the visually disabled
US10182959B2 (en) 2015-07-23 2019-01-22 Enaay Tecnologías Sa De Cv Spatial sensing device
CN105943325A (en) * 2016-06-07 2016-09-21 北京邮电大学 Blind guiding equipment
EP3292853A1 (en) * 2016-09-09 2018-03-14 ams AG Portable environment sensing device
WO2018046439A1 (en) * 2016-09-09 2018-03-15 Ams Ag Portable environment sensing device
CN109562012A (en) * 2016-09-09 2019-04-02 ams有限公司 Portable environment sensor device
US10736811B2 (en) 2016-09-09 2020-08-11 Ams Ag Portable environment sensing device

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