DE59010942D1 - Method and device for determining surface structures - Google Patents

Method and device for determining surface structures

Info

Publication number
DE59010942D1
DE59010942D1 DE59010942T DE59010942T DE59010942D1 DE 59010942 D1 DE59010942 D1 DE 59010942D1 DE 59010942 T DE59010942 T DE 59010942T DE 59010942 T DE59010942 T DE 59010942T DE 59010942 D1 DE59010942 D1 DE 59010942D1
Authority
DE
Germany
Prior art keywords
surface structures
determining surface
determining
structures
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.)
Expired - Fee Related
Application number
DE59010942T
Other languages
German (de)
Inventor
Prof Dr Grill
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.)
Sonident Anstalt
Original Assignee
Sonident Anstalt
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 Sonident Anstalt filed Critical Sonident Anstalt
Application granted granted Critical
Publication of DE59010942D1 publication Critical patent/DE59010942D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/117—Identification of persons
    • A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
    • A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • 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
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8913—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using separate transducers for transmission and reception
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/012—Phase angle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/015—Attenuation, scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0425—Parallel to the surface, e.g. creep waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
DE59010942T 1989-06-12 1990-06-08 Method and device for determining surface structures Expired - Fee Related DE59010942D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919159 1989-06-12
DE4016105A DE4016105B4 (en) 1989-06-12 1990-05-18 Method and device for detecting surface structures

Publications (1)

Publication Number Publication Date
DE59010942D1 true DE59010942D1 (en) 2005-04-14

Family

ID=34529595

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4016105A Expired - Fee Related DE4016105B4 (en) 1989-06-12 1990-05-18 Method and device for detecting surface structures
DE59010942T Expired - Fee Related DE59010942D1 (en) 1989-06-12 1990-06-08 Method and device for determining surface structures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4016105A Expired - Fee Related DE4016105B4 (en) 1989-06-12 1990-05-18 Method and device for detecting surface structures

Country Status (1)

Country Link
DE (2) DE4016105B4 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4222387C2 (en) * 1992-07-08 1994-06-30 Stockburger H Method and device for identifying the respective spatial structure of a test object
DE4310390C2 (en) * 1993-03-30 1995-03-16 Topping Best Ltd Ultrasound imaging device for detecting and / or identifying surface structures and structures close to the surface
JPH07508677A (en) * 1993-04-30 1995-09-28 イェノプティック　ゲーエムベーハー Fingerprint identification device using ultrasound
DE4337918C1 (en) * 1993-04-30 1994-07-28 Jenoptik Jena Gmbh Device for identifying fingerprints using ultrasound
DE10104631B4 (en) * 2001-01-31 2004-05-06 Frank Bechtold Method and device for identifying the surface and latent structures of a test object close to the surface
DE102004043876A1 (en) * 2004-09-10 2006-03-30 Frank Bechtold Method and system for determining the authenticity of the individual characteristics of test objects

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165922A (en) * 1962-04-16 1965-01-19 Daniel C Worlton Method of applying lamb waves in ultrasonic testing
US4094306A (en) * 1975-05-01 1978-06-13 The Commonwealth Of Australia, C/O The Department Of Health Apparatus for ultrasonic examination
DE2652770B2 (en) * 1976-11-18 1978-08-31 Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Fuer Wirtschaft In Bonn, Dieser Vertreten Durch Den Praesidenten Der Bundesanstalt Fuer Materialpruefung (Bam), 1000 Berlin Method for the holographic scanning of defects for the purpose of estimating the size of defects of defects found with conventional ultrasonic testing methods
JPS5468090A (en) * 1977-11-10 1979-05-31 Tokyo Shibaura Electric Co Ultrasonic scanner
FR2545238B1 (en) * 1983-04-29 1985-07-05 Commissariat Energie Atomique ACOUSTIC HOLOGRAPHY METHOD AND DEVICE USING SPACE BOUND ULTRASONIC BEAM
DE3610397A1 (en) * 1986-03-27 1987-10-01 Storck Wolfgang METHOD FOR DETECTING A FINGERPRINT

Also Published As

Publication number Publication date
DE4016105B4 (en) 2005-06-02
DE4016105A1 (en) 1990-12-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee