JPS57211508A - Optical inclinometer - Google Patents

Optical inclinometer

Info

Publication number
JPS57211508A
JPS57211508A JP9674981A JP9674981A JPS57211508A JP S57211508 A JPS57211508 A JP S57211508A JP 9674981 A JP9674981 A JP 9674981A JP 9674981 A JP9674981 A JP 9674981A JP S57211508 A JPS57211508 A JP S57211508A
Authority
JP
Japan
Prior art keywords
optical fibers
meter
intercepting plate
optical
explosion
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
JP9674981A
Other languages
Japanese (ja)
Inventor
Ichiro Kono
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP9674981A priority Critical patent/JPS57211508A/en
Publication of JPS57211508A publication Critical patent/JPS57211508A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means

Abstract

PURPOSE:To obtain an optical inclinmeter which is explosion-proof and free from the effect of electromagnetic induction or the like, by providing the main body of the meter with an intercepting plate fitted and suspended down rotatably at the upper end, and with a pair of opposed optical fibers on both sides of the rotation plane of the intercepting plate. CONSTITUTION:The main body 3 of a meter is constituted by a rack 1 and a supporting frame 2, and an intercepting plate 5 is provided in such a manner that its upper end is supported rotatably by the pin 6 of the bracket 4 of the supporting frame 2. Lights are emitted from a pair of optical fibers 7, and when the inclination of the plate exceeds a set value theta, a light falling on either of optical fibers 8 is intercepted by the intercepting plate 5 and thereby the inclination exceeding the set value theta is detected. Since optical signals are emitted and received by using the optical fibers 7 and 8, the meter is explosion-proof and free from the effect of electromagnetic induction.
JP9674981A 1981-06-24 1981-06-24 Optical inclinometer Pending JPS57211508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9674981A JPS57211508A (en) 1981-06-24 1981-06-24 Optical inclinometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9674981A JPS57211508A (en) 1981-06-24 1981-06-24 Optical inclinometer

Publications (1)

Publication Number Publication Date
JPS57211508A true JPS57211508A (en) 1982-12-25

Family

ID=14173318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9674981A Pending JPS57211508A (en) 1981-06-24 1981-06-24 Optical inclinometer

Country Status (1)

Country Link
JP (1) JPS57211508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571844A (en) * 1982-06-09 1986-02-25 Jeco Co., Ltd. Angle change detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111406A (en) * 1980-12-29 1982-07-10 Fujitsu Ltd Detector for optical inclination

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111406A (en) * 1980-12-29 1982-07-10 Fujitsu Ltd Detector for optical inclination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571844A (en) * 1982-06-09 1986-02-25 Jeco Co., Ltd. Angle change detector
US4584778A (en) * 1982-06-09 1986-04-29 Jeco Co., Ltd. Angle change detector

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