EP1960981A2 - Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur, en particulier un utilisateur handicapé visuel, méthode et programme informatique correspondants - Google Patents

Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur, en particulier un utilisateur handicapé visuel, méthode et programme informatique correspondants

Info

Publication number
EP1960981A2
EP1960981A2 EP20060849560 EP06849560A EP1960981A2 EP 1960981 A2 EP1960981 A2 EP 1960981A2 EP 20060849560 EP20060849560 EP 20060849560 EP 06849560 A EP06849560 A EP 06849560A EP 1960981 A2 EP1960981 A2 EP 1960981A2
Authority
EP
European Patent Office
Prior art keywords
user
information
information content
identification number
basis
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Withdrawn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
EP20060849560
Other languages
German (de)
English (en)
Inventor
Andrea Borsic
Guido Belforte
Egidio Di Sora
Pericle Farris
Pietro Gambino
Sandra Gallo
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.)
Ages Industriale Srl
Istituto Superiore Mario Boella
Original Assignee
Ages Industriale Srl
Istituto Superiore Mario Boella
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 Ages Industriale Srl, Istituto Superiore Mario Boella filed Critical Ages Industriale Srl
Publication of EP1960981A2 publication Critical patent/EP1960981A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
    • 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
    • A61H3/066—Installations on the floor, e.g. special surfaces, to guide blind persons
    • 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
    • A61H3/068—Sticks for blind persons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/68—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5007—Control means thereof computer controlled
    • A61H2201/501—Control means thereof computer controlled connected to external computer devices or networks
    • A61H2201/5015—Control means thereof computer controlled connected to external computer devices or networks using specific interfaces or standards, e.g. USB, serial, parallel

Definitions

  • the present invention relates to techniques for exploiting information selected on the basis of the position of a user, in particular information to guide visually-impaired or blind users.
  • the invention was developed paying particular attention to its possible application to complement guiding information provided by tactile paths for visually-impaired or blind users.
  • walking aids are known for the visually impaired that exploit the placement of tactile paths.
  • Such paths are generally formed of appropriate tiles or made of stone-like material or granite-gres or, alternatively, may be made of rubber and applied onto the pre-existing flooring.
  • tactile paths present specific areas in relief that form patterns; these patterns, which the visually-impaired user is capable of perceiving through the soles of his/her feet and by using a stick, are codified in a language known as LOGES, which can impart some simple information such as "turn right", “turn left”, or "impassable boundary". These indications help the visually-impaired user to follow the route marked by the presence of the path in safety.
  • the information carried by the tactile path is not however generally sufficient for the user to walk in an environment that he or she does not know and reach the desired goal.
  • the tactile path ensures that the user follows a safe route, but does not provide information concerning the goal that he or she will reach by following that route .
  • infrared systems provide for smart devices to be situated alongside the path, at a distance of a few metres one from the next, equipped with a microchip and an infrared communication system. On each of these devices, information is stored relating to the particular location (for example a description of the surrounding area, and indications on the direction in which the path leads) .
  • the visually-impaired user must therefore wear a similar device, equipped with a microchip and capable of receiving information from the devices situated alongside the path.
  • the receiving device worn by the visually-impaired user enters the field of communication of the device alongside the path, the latter transfers the information to the receiving device, which may present that information, for example in an audio format, to the visually- impaired person.
  • the infrared system is capable of efficiently guiding the visually-impaired user, however the system suffers from drawbacks that chiefly lie in the high costs of installation and- maintenance.
  • the cost of installation is high due to the fact that, alongside the path, expensive devices must be installed that, being active devices, must be supplied with power through appropriate wiring. Maintenance of the system is also expensive since the devices alongside the path are vulnerable with regard to acts of vandalism, and are in any case exposed to the outdoors environment and in principle are subject to ageing.
  • a less expensive, but less effective, solution consists in placing Braille plates alongside the LOGES path at regular distances.
  • Braille plates present the advantage with regard to the infrared ray devices that they do not require an electric power supply, nor any particular maintenance. These plates bear informative text written in Braille. The visually-impaired person may read this information by placing his or her hand on the plate.
  • This solution is capable of providing less information than the previous solution, since the size of the plates must be limited.
  • the system requires the person to stop periodically to access the information present on the plate through touch. Installation of the plates in an urban environment also entails some costs, since each plate must be provided with an appropriate support, to be easily accessible to a person who is standing.
  • the plates also present the disadvantage of its not being easy to make changes, once printed, and thus should the information contained need to be modified, it is necessary to replace the plate .
  • the present invention has as its purpose that of providing a solution for the exploitation of information selected on the basis of the position of a user, such as to overcome the drawbacks inherent in the solutions ' according to the prior art which were described above. According to the present invention, this purpose is achieved thanks to what is indicated specifically in the annexed claims .
  • the present invention may be developed both in terms of a method and in terms of a system, and again in terms of a computer program product directly loadable into the memory of a digital computer and capable of performing the steps of a method according to the invention when the computer product is run on a digital computer.
  • the proposed solution enables a smart path to be obtained, capable of complementing or replacing the information provided by a tactile path, through audio or multimedia messages, at low installation and maintenance cost.
  • FIG. 1 shows a view, in diagram form, of the system according to the invention overall
  • the proposed method and system are substantially based on the placement within the flooring along a predetermined route, or the insertion into a path, at regular intervals, of transponders that can be interrogated through radio frequency waves, in particular passive Radio Frequency Identification (RFlD) tags. From now on these tags will be referred to as RFID tags.
  • RFID tags In each of these RFID tags, a unique identification number (UIN) will be stored, so that the RFID tags enable each position at which they are placed to be identified, through the UIN identification number.
  • UIN unique identification number
  • the system also requires the user, in particular the visually-impaired person, to be provided with a probe, preferably a stick, appropriately configured to read the RFID tags.
  • This probe thus incorporates an RFID reader and the relative aerial, such that it is capable of reading, via radio, the identification number of the RFID tags placed along the guide path.
  • this station can know the position of the user on the path, and send information content, in the form of appropriate guide ⁇ messages, to a device that can reproduce such messages.
  • the probe, or stick is in particular provided with a microchip connected to the RFID reader, the microchip also being fitted with a wireless interface, in particular Bluetooth, that enables communication to take place between the microchip and the user's cellular telephone.
  • the microchip on board the probe is therefore capable of receiving from the RFID reader the UIN read from the RFID tag, and transferring this information to the telephone, through the Bluetooth connection.
  • the cellular telephone is eguipped with appropriately developed software that communicates with the service station situated remotely, for example through a GPRS protocol on the public cellular network.
  • the software on board the telephone sends the identification number of the RFID tag currently within the reading range of the RFID reader on board the stick to the remote station.
  • the remote station is provided with a database that contains a list of all tags present along the path, and for each of these it contains, in text format, a specific message to aid walking.
  • the message associated to the tag that has been read is transmitted from the remote station to the user's cellular telephone which, preferably through text-to-speech conversion software, generates a vocal message, which is sent to the user's cellular telephone, through a Bluetooth earphone to which the telephone connects.
  • the user in particular the visually-impaired user, can receive audio messages during the route along the path, indicating the direction in which he or she is moving and the goals that may be reached.
  • the information that the user of the system can exploit may be of various types.
  • the station may maintain a specific profile for each user, in which the categories of information the user is interested in are selected.
  • figure 1 shows a diagram of the principle underlying a system for exploiting information selected on the basis of the user's position, according to the invention.
  • This system comprises a rubberised tactile path, indicated with reference 13, that includes inside it a transponder that can be interrogated through radio frequency waves, or an RFlD tag 12.
  • Reference 50 indicates a visually-impaired user who is equipped with a probe 10, in the form of a stick for the visually impaired.
  • This probe 10 bears, at its extremity, an RFID reading device 11 including an antenna, capable of reading the content of an RFID tag 12 within a reading range 64.
  • the system uses UHF frequencies, which at present provide a longer reading range than other technologies on the market (HF and 2.4Ghz).
  • the reading range 64 of the probe 10 being controllable by calibrating the power of the reading signal, it is possible to set the system such that, the distance between neighbouring RFID tags 12 being known, only one RFID tag 12 at a time can fall inside the reading range 64.
  • the probe 10 also includes a microchip unit 14, to which the RFID reading device 11 is connected, for example through an RS232 serial interface.
  • This microchip unit 14 is capable of communicating with the RFID reading device 11 and of asking it for the reading of the RFID tag 12 currently in the reading range 64 of its aerial.
  • the microchip unit 14 is equipped with a wireless interface capable of establishing a signal connection 63 according to a Bluetooth protocol, in particular Bluetooth RFCOMM, with a cellular telephone 15 associated to the person of the user 50.
  • This communication 63 enables a microchip unit 14 on the probe 10 to send the identification number I of the RFID tag 12 that has been read to the cellular telephone 15 of the user 50.
  • the probe or stick 10 is also equipped with a battery necessary to supply power to the RFID reading device 11 and the microchip unit 14.
  • the probe 10 is also equipped with a series of push-buttons, not shown in figure 1, connected to the microchip unit 14, that enable the user 15 for example to activate/deactivate reading of the RFID tags 12, or to control the level of information desired (for example to select categories of interest) .
  • the cellular telephone 15 is equipped to make a connection, indicated with reference 61 in figure 1, with a service station 30, situated remotely.
  • This cellular telephone 15, as already mentioned, also includes its own Bluetooth interface, so that it can receive on the Bluetooth connection 63 from the probe 10 the identification number I of the RFID tag 12 that, at any one time, falls within the reading range 64 of the RFlD aerial 11.
  • the cellular telephone 15 is also ' fitted with specific software procedures that enable communication on the connection 61, via GPRS protocol on the public cellular network, with the service station 30, to send the identification numbers of the RFID tags 12 it has read, and to receive from the service station 30 messages M, that is information content, for guiding purposes in the example shown, to be provided to the user 50.
  • These messages M may be in a pre-recorded audio form or, in order to reduce the amount of data exchanged on the connection 61, in text format.
  • the messages M may be transformed ⁇ nto voice messages in the cellular telephone 15 through text-to-speech conversion software.
  • the message M, audio or generated on board the telephone 15, that is received is then sent to an earphone 16, through a respective Bluetooth connection 62.
  • the earphone 16 may also be connected by wire and, more in general, , the audio-visual means of reproduction of the cellular telephone 15 are exploited to reproduce the messages M.
  • the earphone- 16 enables the user 50 of the system according to the invention to hear the vocal messages M that are sent from the service station 30 to the telephone 15, and that the telephone 15 sends to the earphone 16 through wireless Bluetooth communication on the connection 62.
  • the service station 30 comprises one or more servers 31 and one or more databases 32.
  • the one or more databases 32 store tables, in which for each RFID tag 12, identified through its identification number I, information is associated relating to the specific position of the RFID tag 12, as detected and specified at the time of its installation, together with all messages associated to that specific position identified by the identification number I of the RFID tag 12.
  • the service station 30 may also have several categories of information associated to each RFID tag 31, for example the category "information for walking", that contains information useful to facilitate reaching a goal, or the category "information relating to danger", which contains information useful to qualify existing dangers.
  • a category "street numbers” may for example be used to communicate to the visually-impaired subject the closest street number.
  • an associated profile is also stored in the database 32, which defines the type of category of information that each user is interested in and, for example in the case of geographical profiles, the categories of information that user is interested in for each geographical area.
  • the servers 31 of the service station 30 are therefore fitted with a convenient application that for each user, known from his or her identification number that may be derived from the GPRS connection, and knowing the identification number I of • the RFID tag 12 within the reading range 64 of his or her stick 10, which is transmitted by the personal cellular telephone 15 again via the GPRS connection, checks the profile associated to the user and takes in consequence from the database 32 the messages M associated to the specific position of the user 50, determined by the identification number I, or UIN, of the RFID tag 12 that has been read, and pertinent to the category of interest specified in the user profile, and sends the vocal message (for example in MP3 or avi format) or the text message to the user's cellular telephone 15, again through communication over the GPRS connection 61.
  • the service station 30 then provides to each user 50 only the information in which he or she has indicated an interest, avoiding disturbing a user 50 with undesired messages.
  • the profile of the user may also have a geographical connotation, that is the user may specify that he or she wants to receive more detailed information in some points (for example outside of areas known to the user) , and may indicate the desire to receive less information in other areas (for example in areas known to the user, such as those close to home) .
  • Profiling of the geographical type is possible since the service station knows the position of the user, through the UIN number of the tag under reading range of his or her stick fitted with RFID reader, and thus, knowing the position, may select the type of information to send, according to the profile specified by the user for that specific area.
  • Information in the database 32 may be updated over time. It is therefore possible to adapt the messages to any changes in the route or to temporary emergencies.
  • the database 32 contains dynamic information content.
  • the passive RFID tags 12 may be immersed at regular intervals into rubber paths 13 configured to co-operate efficaciously with the system according to the invention. Such paths 13 are then installed by gluing them onto the pre-existing surfaces of floors or walls.
  • the paths 13 are thus configured such as to present openings and joints, that enable the different tiles that make up the path to be precisely aligned, that is avoiding any possible discontinuity that could mislead a visually-impaired user who is following a trace of the LOGES type with his or her stick.
  • figure 2 shows a path 13, which is made up of two straight tiles 131 and a corner tile 132.
  • the UHF RFID tags 12 are formed of a chip of small size (lmm x lmm x 0.5mm) and of a dipolar aerial, of flat rectangular shape and dimensions approximately lcm x 8cm. For preference, the reading range is between 20 and 50cm. It is therefore possible to consider installing these tags 12, equipped with an appropriate casing, in grooves 150, that are practised in pre-existing rubber paths.
  • These grooves may be vertical, that is the RFID tag 12 is inserted in a vertical position with regard to the plane of the path, as is shown in figure 6, or else hollows 151 may be practised in the path, the tag 12 within its protective casing may be inserted, and the tag 12 may then be covered with an appropriate cap 152, as shown in figure 7.
  • an appropriate cap 152 as shown in figure 7.
  • the tag fitted with protective casing in grooves practised at the joints between two tiles.
  • insertion of the tag with its protective casing in grooves practised at the joints between tiles responds to the need to minimise the discontinuity perceived by the visually-impaired subject, thus it can also be adopted in the case of rubber tactile paths.
  • the RFID tags 12 can be inserted in all the tiles, and only some of them may be activated, according to the requirement to provide information.
  • an RFID tag may for example be present in each tile, with for example a spacing of 40 cm, and for communication in the proposed system only those tags 12 corresponding to turns or dangers may be activated.
  • Non-active tags can later be activated at need.
  • the fact that the databases containing information content are stored on remote servers enables message archives, including of large size, to be managed in a flexible manner, moreover without the need to intervene at the place where the predetermined path is situated.
  • the communication protocols described can be replaced by other protocols capable of providing the same functions in the sphere of the invention.
  • the mobile network may be of the GPRS type, but also of the GSM, 3GPP, or TAGS type, or also Wi-Fi with continual coverage, or Wi-MAX.
  • any type of wireless cover is intended, not necessarily of the cellular telephone type, capable of performing the functions required for the system and method according to the invention, in particular enabling wireless connection to a remote station.
  • the Bluetooth protocol may be replaced by other radio protocols, for example Wi-Fi, Zig-Bee, or in general short range protocols contained in the specifications of standards of the family 802 -XX, or of IRDA infrared transmissions.

Abstract

Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur et qui comprend : un ou plusieurs dispositifs de transmission (12) pouvant transmettre des informations respectives (I) et disposés dans une route prédéterminée (13), des moyens (11) pour recevoir lesdites informations respectives (I) sélectionnées en fonction de l'emplacement d'un utilisateur (50) et des moyens utilisateur (15, 16) pour reproduire un contenu d'information (M) selon lesdites informations respectives (I) sélectionnées en fonction de l'emplacement d'un utilisateur (50). Selon l'invention, lesdits dispositifs de transmission (12) sont disposés en des emplacements spécifiques dans ladite route prédéterminée (13) et lesdites informations respectives (I) comprennent un numéro identifiant le dispositif de transmission (12), lesdits moyens (11) pour recevoir lesdites informations respectives (I) sélectionnées en fonction de l'emplacement d'un utilisateur (50) sont associés aux moyens (14, 15) pour envoyer ledit numéro d'identification (I) à une ou plusieurs bases de données (32) dans lesquelles sont stockées des contenus d'information (M) et configurés pour renvoyer lesdits contenus d'information (M) en fonction dudit numéro d'identification (I) envoyé, ledit système comprend également des moyens utilisateur (15) pour recevoir ledit contenu d'information (M) de ladite ou desdites bases de données (32) et l'envoyer auxdits moyens utilisateur (15, 16) pour reproduire le contenu d'information (M) selon lesdites informations respectives (I) sélectionnées en fonction de l'emplacement d'un utilisateur (50).
EP20060849560 2005-11-24 2006-11-23 Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur, en particulier un utilisateur handicapé visuel, méthode et programme informatique correspondants Withdrawn EP1960981A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20050833 ITTO20050833A1 (it) 2005-11-24 2005-11-24 Sistema per la fruizione di informazioni selezionate in base alla posizione di un utente, in particolare un utente non vedente, procedimento e prodotto informatico
PCT/IB2006/055062 WO2007099416A2 (fr) 2005-11-24 2006-11-23 Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur, en particulier un utilisateur handicapé visuel, méthode et programme informatique correspondants

Publications (1)

Publication Number Publication Date
EP1960981A2 true EP1960981A2 (fr) 2008-08-27

Family

ID=38445700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060849560 Withdrawn EP1960981A2 (fr) 2005-11-24 2006-11-23 Système d'exploitation d'informations sélectionnées en fonction de l'emplacement d'un utilisateur, en particulier un utilisateur handicapé visuel, méthode et programme informatique correspondants

Country Status (3)

Country Link
EP (1) EP1960981A2 (fr)
IT (1) ITTO20050833A1 (fr)
WO (1) WO2007099416A2 (fr)

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CN101623231B (zh) * 2009-08-13 2011-04-27 浙江大学 基于蓝牙的盲人社会环境提醒方法及装置
EP2544018B1 (fr) * 2011-06-27 2013-04-03 Alcatel Lucent Estimation de la localisation d'un dispositif mobile
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CN104571107B (zh) * 2014-12-31 2017-07-11 桂林电子科技大学 一种盲人行动辅助及远程监控系统
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Also Published As

Publication number Publication date
WO2007099416A2 (fr) 2007-09-07
WO2007099416A3 (fr) 2007-11-29
ITTO20050833A1 (it) 2007-05-25

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