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WO1999064889A1 - Procede et dispositif de determination de mesures d'objets sans qu'il y ait de contact avec ces derniers - Google Patents

Procede et dispositif de determination de mesures d'objets sans qu'il y ait de contact avec ces derniers Download PDF

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Publication number
WO1999064889A1
WO1999064889A1 PCT/NL1999/000356 NL9900356W WO9964889A1 WO 1999064889 A1 WO1999064889 A1 WO 1999064889A1 NL 9900356 W NL9900356 W NL 9900356W WO 9964889 A1 WO9964889 A1 WO 9964889A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflection pattern
ultrasonic
received
measurement data
ultrasonic reflection
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.)
Ceased
Application number
PCT/NL1999/000356
Other languages
English (en)
Inventor
Peter Johannes Wilhelmus Van Herp
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 AU42936/99A priority Critical patent/AU4293699A/en
Priority to EP99955543A priority patent/EP1086386A1/fr
Publication of WO1999064889A1 publication Critical patent/WO1999064889A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/539—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section

Definitions

  • the present invention relates to a method for determining measurement data of naked objects, such as people who may be dressed, by means of ultrasonic waves, wherein ultrasonic waves being transmitted to objects are reflected and the measurement data are determined on the basis of information contained in a received ultrasonic reflection pattern.
  • the present invention furthermore relates to a device for determining measurement data of naked objects, such as people who may be dressed, by means of ultrasonic waves, which device comprises ultrasonic transmission means for transmitting ultrasonic waves to the object and receiving means for receiving a ultrasonic reflection pattern reflected from said object.
  • the object of the invention is to provide an improved method and a simpler device, which make it possible to obtain measurement data of an object via less complex operations .
  • the method according to the invention is characterized in that said measurement data are determined from runtime-related information contained in the received ultrasonic reflection pattern.
  • the advantage of the method and device according to the invention is that information with regard to the distance between transmission means and receiving means can be derived directly from the runtime, given the velocity of the ultrasonic waves, without having to carry out relatively complex operations.
  • the receiving means are arranged for transmitting ultrasonic, puls wave shaped signals, so that the convolution operation, when used, can be a "spike" convolution operation, as a result of which the received ultrasonic reflection pattern can be detected more easily and more unequivocally than would be possible with the transmission of for example a pulse train.
  • Envelope detection of the received ultrasonic reflection pattern by means of an envelope detector in the receiving means is preferred, because of the simple decision software and hardware that is required, in order to enable a quick determination of measurement data.
  • Figure 1 schematically shows a device 1 which is arranged for determining the measurements of objects 0, such as (usually clothed) persons, by means of ultrasonic waves without making contact with said objects.
  • Ultrasonic waves having a frequency of up to 100 KHz are reflected well from a human object, whilst they are not reflected too much from clothing or absorbed by said clothing.
  • Device 1 comprises transmission means 2, which contain one or more ultrasonic transducers and receiving sensors 3 , which may or may not be separated from said transmission means 2, which receive the ultrasonic reflection pattern.
  • Said transducers are capable of scanning the object, for example in a line scan, so as to carry out measurements on the entire object or on that part of said object which generally determines for example the size of people's clothing.
  • Transmission means 2 which transmit a pulsed ultrasonic signal appeared to provide sufficient resolving power, which lies around 3.3 mm with a pulse duration of 20 ⁇ sec, which results in an eventual measurement deviation which is acceptable for clothing sizes.
  • the measurement data are determined, on the basis of transmission time-related information in the received ultrasonic reflection pattern, in data processing means 4 of the device 1 which are connected to the receiving means 3.
  • the distance travelled can be determined on the basis of the time which passes between transmission and receipt, from which it is possible to determine the distance between transmission/receiving means 2/3 and the reflecting surface of the object in the plane in which measurements are being carried out.
  • ⁇ cauae is a pulsed signal, this signal can be regarded in a mathematical sense as a distribution, and equation (1) leads to a "spike" convolution, wherein ⁇ effect (t) will be equal to h(t) in accordance with the screening characteristic of distributions. For some other types of clothing, wherein no multiple internal reflections occurred, the transfer characteristic h simply appeared to be momentaneous , however.
  • the pulsed signal may for example be a triangular signal, which preferably has a total duration of about 3 - 30 ⁇ sec, more in particular 20 - 25 ⁇ sec, in order to realise an optimum resolving power. It has become apparent that it is possible to improve the signal-to- noise ratio considerably by using autocorrelation techniques, which are known per se, in the data processing means 4.
  • Device 1 preferably comprises memory means 5 and a temperature gauge 6 connected to memory means 5.
  • Figure 2 shows a simulation model of the device of Figure 1, wherein the transmission and receiving means 2 and 3 are arranged with transducers which each have a differentiating effect on the pulsed input signals supplied thereto.
  • the effect is that the input signal supplied to means 4 in Figure 2 has been differentiated twice.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

On décrit un procédé et un dispositif qui permettent de déterminer des données de mesure d'objets, tels que des personnes pouvant être vêtues, à l'aide d'ondes ultrasonores. Dans ce procédé et ce dispositif, les ondes ultrasonores envoyées en direction des objets sont renvoyées et les données de mesure sont déterminées sur la base d'informations liées au moment de la transmission contenues dans le diagramme de réflexion ultrasonore reçu. Un temps de battement peut délimiter le signal reçu d'autres signaux représentant des réflexions multiples entre l'objet et le vêtement.
PCT/NL1999/000356 1998-06-08 1999-06-08 Procede et dispositif de determination de mesures d'objets sans qu'il y ait de contact avec ces derniers Ceased WO1999064889A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU42936/99A AU4293699A (en) 1998-06-08 1999-06-08 Method and device for determining the measurements of objects without making contact therewith
EP99955543A EP1086386A1 (fr) 1998-06-08 1999-06-08 Procede et dispositif de determination de mesures d'objets sans qu'il y ait de contact avec ces derniers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1009343 1998-06-08
NL1009343A NL1009343C2 (nl) 1998-06-08 1998-06-08 Werkwijze en inrichting voor het contactloos bepalen van de maten van objecten.

Publications (1)

Publication Number Publication Date
WO1999064889A1 true WO1999064889A1 (fr) 1999-12-16

Family

ID=19767271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1999/000356 Ceased WO1999064889A1 (fr) 1998-06-08 1999-06-08 Procede et dispositif de determination de mesures d'objets sans qu'il y ait de contact avec ces derniers

Country Status (4)

Country Link
EP (1) EP1086386A1 (fr)
AU (1) AU4293699A (fr)
NL (1) NL1009343C2 (fr)
WO (1) WO1999064889A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055644A1 (fr) * 1999-03-16 2000-09-21 De Montfort University Procedes et appareil d'imagerie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944186A (en) * 1988-11-29 1990-07-31 Xecutek Corporation Ultrasonic measuring system
EP0459336A1 (fr) * 1990-05-29 1991-12-04 Deere & Company Système de mesure de distances à ultrasons
JPH05203435A (ja) * 1992-01-24 1993-08-10 Toyobo Co Ltd 人体形状計測法
JPH05203436A (ja) * 1992-01-27 1993-08-10 Toyobo Co Ltd 人体形状計測方法
WO1995023344A1 (fr) * 1994-02-28 1995-08-31 Siemens Aktiengesellschaft Procede permettant de determiner de maniere ultrasonore la position d'un objet par rapport a un arriere-plan

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054862A (en) * 1975-10-28 1977-10-18 Raytheon Company Ranging system with resolution of correlator ambiguities
GB8718717D0 (en) * 1987-08-07 1987-09-16 Sonin Inc Measuring distances

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944186A (en) * 1988-11-29 1990-07-31 Xecutek Corporation Ultrasonic measuring system
EP0459336A1 (fr) * 1990-05-29 1991-12-04 Deere & Company Système de mesure de distances à ultrasons
JPH05203435A (ja) * 1992-01-24 1993-08-10 Toyobo Co Ltd 人体形状計測法
JPH05203436A (ja) * 1992-01-27 1993-08-10 Toyobo Co Ltd 人体形状計測方法
WO1995023344A1 (fr) * 1994-02-28 1995-08-31 Siemens Aktiengesellschaft Procede permettant de determiner de maniere ultrasonore la position d'un objet par rapport a un arriere-plan

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HANEBECK U D ET AL: "A NEW HIGH PERFORMANCE MULTISONAR SYSTEM FOR FAST MOBILE ROBOTS", PROCEEDINGS OF THE IEEE/RSJ/GI INTERNATIONAL CONFERENCE ON INTELLIG ROBOTS AND SYSTEMS: ADVANCED ROBOTICS AND THE REAL WORLD, MUNICH, SEPT. 12 - 16, 1994, vol. 3, 12 September 1994 (1994-09-12), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1853 - 1860, XP000510644 *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 626 (P - 1647) 18 November 1993 (1993-11-18) *
SCHMITT R M ET AL: "TOUCHLESS DETERMINATION OF 3-D-ARBITRARY SURFACES WITH HIGH ACCURACY USING 500 KHZ AIR ULTRASOUND", ACOUSTICAL IMAGING, BOCHUM, APR. 3 - 5, 1991, no. SYMP. 19, 3 April 1991 (1991-04-03), ERMERT H;HARJES H-P, pages 945 - 950, XP000333743 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055644A1 (fr) * 1999-03-16 2000-09-21 De Montfort University Procedes et appareil d'imagerie

Also Published As

Publication number Publication date
NL1009343C2 (nl) 1999-12-10
EP1086386A1 (fr) 2001-03-28
AU4293699A (en) 1999-12-30

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