JPS64411A - Superconducting pressure sensor - Google Patents

Superconducting pressure sensor

Info

Publication number
JPS64411A
JPS64411A JP15610087A JP15610087A JPS64411A JP S64411 A JPS64411 A JP S64411A JP 15610087 A JP15610087 A JP 15610087A JP 15610087 A JP15610087 A JP 15610087A JP S64411 A JPS64411 A JP S64411A
Authority
JP
Japan
Prior art keywords
magnetic field
displacement
coil
superconductor
current
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
JP15610087A
Other languages
Japanese (ja)
Other versions
JPH01411A (en
Inventor
Hitoshi Kuribayashi
Hiroshi Ishihara
Tsuneto Azuma
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62-156100A priority Critical patent/JPH01411A/en
Priority claimed from JP62-156100A external-priority patent/JPH01411A/en
Publication of JPS64411A publication Critical patent/JPS64411A/en
Publication of JPH01411A publication Critical patent/JPH01411A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To detect a pressure displacement with high accuracy without compensating or correcting temp. in cryogenic environment by impressing an external magnetic field to a superconductor from a normal conductor coil and detecting the change in the critical current of the superconductor by the displacement of the coil.
CONSTITUTION: The magnetic field He is impressed perpendicularly on the axis of the bar-shaped superconductor 1 by the normal conductor coil 2. This magnetic field He is generated by passing the current IN to the coil 2. The displacement δ is generated when the coil 2 is pulled by the pressure P at this time. Since the displacement δ is induced approximately uniformly over the entire part of the coil 2, the magnetic field He changes with the displacement δ. Namely, He=He(δ) is obtd. The synthetic magnetic field He in the case in which the magnetic fields He(δ) and Hs act perpendicularly is He2=He(δ)2+ Hs 2 if the magnetic field generated by passing the current Is below the critical current Ic to the superconductor 1 is designated as Hs.Ic=f (Hc, He(δ)) (Hc is the critical magnetic field of the superconductor 1) is obtd. therefrom. Namely, the pressure is detectable in the cryogenic environment if the change in the current Ic by the displacement δ is detected by a detector 3.
COPYRIGHT: (C)1989,JPO&Japio
JP62-156100A 1987-06-23 superconducting pressure sensor Pending JPH01411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-156100A JPH01411A (en) 1987-06-23 superconducting pressure sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-156100A JPH01411A (en) 1987-06-23 superconducting pressure sensor

Publications (2)

Publication Number Publication Date
JPS64411A true JPS64411A (en) 1989-01-05
JPH01411A JPH01411A (en) 1989-01-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4955550A (en) * 1987-11-07 1990-09-11 Toyota Jidosha Kabushiki Kaisha Quantitative feeding apparatus usable for pulverized and/or granular material and batch type multi-colored automatic feeding apparatus
CN101895284A (en) * 2010-07-13 2010-11-24 西南交通大学 Electromagnetic control type superconducting switch with quick connection and disconnection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4955550A (en) * 1987-11-07 1990-09-11 Toyota Jidosha Kabushiki Kaisha Quantitative feeding apparatus usable for pulverized and/or granular material and batch type multi-colored automatic feeding apparatus
CN101895284A (en) * 2010-07-13 2010-11-24 西南交通大学 Electromagnetic control type superconducting switch with quick connection and disconnection

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