JPS5619421A - Strain detector - Google Patents

Strain detector

Info

Publication number
JPS5619421A
JPS5619421A JP9593379A JP9593379A JPS5619421A JP S5619421 A JPS5619421 A JP S5619421A JP 9593379 A JP9593379 A JP 9593379A JP 9593379 A JP9593379 A JP 9593379A JP S5619421 A JPS5619421 A JP S5619421A
Authority
JP
Japan
Prior art keywords
magnetic
measured
flux
cores
structure member
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.)
Pending
Application number
JP9593379A
Other languages
Japanese (ja)
Inventor
Yoshikazu Takekoshi
Takeshi Yagisawa
Kiyoshi Fukui
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9593379A priority Critical patent/JPS5619421A/en
Publication of JPS5619421A publication Critical patent/JPS5619421A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE: To lessen an influence of unevenness in gap between a structure member to be measured and a detector by successively providing not less than three magnetic cores of a magnetic sensor and by obtaining an output for calculating variation in magnetic loss from the center magnetic core.
CONSTITUTION: Magnetic-shielding auxiliary magnetic cores 3a and 3b are so provided successively that end parts of magnetic cores of the same magnetic poles will be formed at both adjacent sides of channel-shaped main magnetic core 1. When exciting coil 5 is excited with magnetic sensor 6 in contact with a member to be measured, magnetic flux ϕ2 that has a magnetic path including auxiliary magnetic cores 3a and 3b becomes uneven, but magnetic flux ϕ1 that has a magnetic path including main magnetic core 1 becomes nearly even. Therefore, magnetic flux detection coil 2 wound around main magnetic core 1 detects only magnetic flux ϕ1 which is even in magnetic-flux distribution in the structure member to be measured and then outputs a voltage signal that corresponds to the magnitude of the magnetic flux. Thus, an influence of unevenness in gap between the structure member to be measured and a detector can be lessened.
COPYRIGHT: (C)1981,JPO&Japio
JP9593379A 1979-07-27 1979-07-27 Strain detector Pending JPS5619421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9593379A JPS5619421A (en) 1979-07-27 1979-07-27 Strain detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9593379A JPS5619421A (en) 1979-07-27 1979-07-27 Strain detector

Publications (1)

Publication Number Publication Date
JPS5619421A true JPS5619421A (en) 1981-02-24

Family

ID=14151066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9593379A Pending JPS5619421A (en) 1979-07-27 1979-07-27 Strain detector

Country Status (1)

Country Link
JP (1) JPS5619421A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250395U (en) * 1986-09-04 1987-03-28
JPS63261024A (en) * 1987-04-15 1988-10-27 株式会社ブリヂストン Flexible joint of culvert
JPH0261530A (en) * 1988-08-26 1990-03-01 Matsushita Electric Ind Co Ltd Dynamic quantity sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250395U (en) * 1986-09-04 1987-03-28
JPS63261024A (en) * 1987-04-15 1988-10-27 株式会社ブリヂストン Flexible joint of culvert
JPH0261530A (en) * 1988-08-26 1990-03-01 Matsushita Electric Ind Co Ltd Dynamic quantity sensor

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