GB1136602A - Improvements in thickness-measuring apparatus - Google Patents

Improvements in thickness-measuring apparatus

Info

Publication number
GB1136602A
GB1136602A GB5311565A GB5311565A GB1136602A GB 1136602 A GB1136602 A GB 1136602A GB 5311565 A GB5311565 A GB 5311565A GB 5311565 A GB5311565 A GB 5311565A GB 1136602 A GB1136602 A GB 1136602A
Authority
GB
United Kingdom
Prior art keywords
pulse
duration
circuit
echoes
circuits
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
Application number
GB5311565A
Other languages
English (en)
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.)
Rochar Electronique SA
Original Assignee
Rochar Electronique SA
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
Priority claimed from FR998444A external-priority patent/FR1426247A/fr
Priority claimed from FR998445A external-priority patent/FR1426248A/fr
Priority claimed from FR34504A external-priority patent/FR88895E/fr
Application filed by Rochar Electronique SA filed Critical Rochar Electronique SA
Publication of GB1136602A publication Critical patent/GB1136602A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
GB5311565A 1964-12-14 1965-12-14 Improvements in thickness-measuring apparatus Expired GB1136602A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR998444A FR1426247A (fr) 1964-12-14 1964-12-14 Procédé et circuit de calcul analogique
FR998445A FR1426248A (fr) 1964-12-14 1964-12-14 Dispositif à ultra-sons pour mesurer l'épaisseur des objets
FR34504A FR88895E (fr) 1965-10-11 1965-10-11 Dispositif à ultrasons pour mesurer l'épaisseur des objets

Publications (1)

Publication Number Publication Date
GB1136602A true GB1136602A (en) 1968-12-11

Family

ID=27242612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5311565A Expired GB1136602A (en) 1964-12-14 1965-12-14 Improvements in thickness-measuring apparatus

Country Status (4)

Country Link
CH (1) CH445136A (enrdf_load_stackoverflow)
DE (1) DE1473849A1 (enrdf_load_stackoverflow)
GB (1) GB1136602A (enrdf_load_stackoverflow)
NL (1) NL6515146A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8002888A (nl) * 1980-05-19 1981-12-16 Neratoom Stelsel voor het meten van de wanddikte van een meetobject.
DE3129943C2 (de) * 1981-07-29 1986-09-25 Naučno-proizvodstvennoe ob"edinenie po technologii mašinostroenija CNIITMAŠ, Moskau/Moskva Ultraschallprüfeinrichtung

Also Published As

Publication number Publication date
CH445136A (fr) 1967-10-15
NL6515146A (enrdf_load_stackoverflow) 1966-06-15
DE1473849A1 (de) 1968-12-05

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