GB733973A - Improvements in or relating to accelerometers or/and inclinometers - Google Patents

Improvements in or relating to accelerometers or/and inclinometers

Info

Publication number
GB733973A
GB733973A GB2500353A GB2500353A GB733973A GB 733973 A GB733973 A GB 733973A GB 2500353 A GB2500353 A GB 2500353A GB 2500353 A GB2500353 A GB 2500353A GB 733973 A GB733973 A GB 733973A
Authority
GB
United Kingdom
Prior art keywords
electrodes
electrolyte
chambers
conduit
inclinometer
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
GB2500353A
Inventor
Robert Earle Bareford
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.)
Northrop Grumman Corp
Original Assignee
Northrop Grumman 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
Priority to US285961A priority Critical patent/US2662956A/en
Application filed by Northrop Grumman Corp filed Critical Northrop Grumman Corp
Priority to GB2500353A priority patent/GB733973A/en
Publication of GB733973A publication Critical patent/GB733973A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/135—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by making use of contacts which are actuated by a movable inertial mass
    • 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
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
    • G01C9/22—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container with interconnected containers in fixed relation to each other
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/12—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance

Landscapes

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

Abstract

733,973. Electric accelerometer/inclinometer. NORTHROP AIRCRAFT, Inc. Sept. 14, 1953, No. 25300/53. Class 40 (1). An inclinometer or accelerometer comprises two tubular chambers 4, 5 connected at their lower ends by a conduit 6, the chambers being partly filled with an electrolyte into which electrodes 12, 13, 14, 15 dip so that the resistance of an electric circuit including the electrodes varies according to their depth of immersion. The casing 1 is preferably made of " Pyrex " (Registered Trade Mark)-glass, the various parts being moulded or cast and fused together as indicated by the dotted lines J. An upper conduit 16 is also provided between the two chambers for pressure equalization and is initially provided with a neck 17 for insertion of the electrolyte after which the neck is sealed off. The conduit 6 is flared at 9 and so dimensioned as to produce sufficient damping of liquid flow therethrough to make the indicator response substantially linear. The electrolyte may be magnesium nitrate dissolved in ethanol in which case the electrodes 12 are of pure platinum preferably including 10 per cent iridium, and are welded at 12c to tungsten rods 12b which are welded into glass sleeves 12d which cover the joints 12c. Circuitry. The electrodes 12-15 are series connected to form two arms of a bridge circuit energized from a transformer secondary 18, the other two arms being formed by an adjustable resistor H. The vacuum tube voltmeter VTVM may be graduated to read inclination or acceleration.
GB2500353A 1952-05-03 1953-09-14 Improvements in or relating to accelerometers or/and inclinometers Expired GB733973A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US285961A US2662956A (en) 1952-05-03 1952-05-03 Manometric accelerometer
GB2500353A GB733973A (en) 1953-09-14 1953-09-14 Improvements in or relating to accelerometers or/and inclinometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2500353A GB733973A (en) 1953-09-14 1953-09-14 Improvements in or relating to accelerometers or/and inclinometers

Publications (1)

Publication Number Publication Date
GB733973A true GB733973A (en) 1955-07-20

Family

ID=10220644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2500353A Expired GB733973A (en) 1952-05-03 1953-09-14 Improvements in or relating to accelerometers or/and inclinometers

Country Status (1)

Country Link
GB (1) GB733973A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228428B (en) * 1956-04-05 1966-11-10 Bendix Corp Electrically responsive inclination sensor
US5612679A (en) * 1995-03-14 1997-03-18 Burgess; Lester E. Electrolytic tilt sensor
US5630280A (en) * 1995-05-01 1997-05-20 The Fredericks Company Dual axis electrolytic tilt sensor
US6249984B1 (en) 2000-04-06 2001-06-26 The Fredericks Company Electrolytic tilt sensor having a metallic envelope
US6343422B1 (en) 1999-05-31 2002-02-05 Kabushiki Kaisha Topcon Tilt angel measuring device
CN106595592A (en) * 2016-12-13 2017-04-26 武汉理工大学 Double-direction inclinometer based on liquid level horizontal principle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228428B (en) * 1956-04-05 1966-11-10 Bendix Corp Electrically responsive inclination sensor
US5612679A (en) * 1995-03-14 1997-03-18 Burgess; Lester E. Electrolytic tilt sensor
US5630280A (en) * 1995-05-01 1997-05-20 The Fredericks Company Dual axis electrolytic tilt sensor
US6343422B1 (en) 1999-05-31 2002-02-05 Kabushiki Kaisha Topcon Tilt angel measuring device
US6249984B1 (en) 2000-04-06 2001-06-26 The Fredericks Company Electrolytic tilt sensor having a metallic envelope
CN106595592A (en) * 2016-12-13 2017-04-26 武汉理工大学 Double-direction inclinometer based on liquid level horizontal principle

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