GB1334280A - Pendulum inclinometer - Google Patents

Pendulum inclinometer

Info

Publication number
GB1334280A
GB1334280A GB2639671A GB2639671A GB1334280A GB 1334280 A GB1334280 A GB 1334280A GB 2639671 A GB2639671 A GB 2639671A GB 2639671 A GB2639671 A GB 2639671A GB 1334280 A GB1334280 A GB 1334280A
Authority
GB
United Kingdom
Prior art keywords
pendulum
detectors
grid
inclinometer
grids
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
GB2639671A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1334280A publication Critical patent/GB1334280A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1334280 Pendulum inclinometer J MEIER 19 April 1971 [6 April 1970] 26396/71 Headings G1A A pendulum inclinometer for measuring small inclination angles comprises a pendulum 3 having a grid 10 attached to one end adjacent to a similar grid 11 fixed to a case 2, containing a light source 12 and two detectors 14 and 15 fixed in the case 2, as shown, the relative proportion of light reaching the detectors 14 and 15 being dependent on the inclination of the pendulum relative to the casing. The grids 10 and 11 may be in the form of segments of a circular ring, the radii of which correspond to the distances to the pivot axis of the pendulum and the markings for lines on the grids may extend radially with respect to the pivot axis of the pendulum 50. As shown in Fig.2, the lines of each grid 10 and 11 are of the same width except for line 17 and are spaced apart by the same amount, so that when one grid moves laterally with respect to the other, different proportions of light pass through on each side of the centre line 17 giving rise to a difference between the outputs of the detectors 14 or 15. The motion of the pendulum is damped by means of a metal member 7 and a magnet 6 the deflection of the pendulum 3 is limited by means of a bolt member 8 extending into a recess 9 located at the lower end of the pendulum. An electronic measuring circuit including a meter utilizes the signals from the detectors 14 and 15. A range changing facility is also disclosed.
GB2639671A 1970-04-06 1971-04-19 Pendulum inclinometer Expired GB1334280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH502570A CH507506A (en) 1970-04-06 1970-04-06 Pendulum inclinometer

Publications (1)

Publication Number Publication Date
GB1334280A true GB1334280A (en) 1973-10-17

Family

ID=4286644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2639671A Expired GB1334280A (en) 1970-04-06 1971-04-19 Pendulum inclinometer

Country Status (4)

Country Link
AT (1) AT316889B (en)
CH (1) CH507506A (en)
DE (1) DE2028847A1 (en)
GB (1) GB1334280A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134468A (en) * 1976-05-04 1977-11-10 Yamamoto Electric Ind Co Ltd Apparatus for measuring oblique angle
GB2207751A (en) * 1987-07-30 1989-02-08 Zircon Int Inc Electronic level
EP0964222A1 (en) * 1997-12-02 1999-12-15 Matsushita Electric Industrial Co., Ltd. Tilt angle sensor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE401264B (en) * 1976-12-14 1978-04-24 Bergkvist Lars A DEVICE FOR INDICATING A HORIZONTAL DIRECTION AND AN ANGLE AREA
DE4110858A1 (en) * 1991-04-04 1992-10-08 Wild Heerbrugg Ag TWO-AXIS INCLINATOR

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134468A (en) * 1976-05-04 1977-11-10 Yamamoto Electric Ind Co Ltd Apparatus for measuring oblique angle
GB2207751A (en) * 1987-07-30 1989-02-08 Zircon Int Inc Electronic level
EP0964222A1 (en) * 1997-12-02 1999-12-15 Matsushita Electric Industrial Co., Ltd. Tilt angle sensor
EP0964222A4 (en) * 1997-12-02 2002-11-27 Matsushita Electric Ind Co Ltd Tilt angle sensor

Also Published As

Publication number Publication date
AT316889B (en) 1974-07-25
CH507506A (en) 1971-05-15
DE2028847A1 (en) 1971-10-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee