CA1159128A - Motion sensing apparatus with variable threshhold - Google Patents

Motion sensing apparatus with variable threshhold

Info

Publication number
CA1159128A
CA1159128A CA000358715A CA358715A CA1159128A CA 1159128 A CA1159128 A CA 1159128A CA 000358715 A CA000358715 A CA 000358715A CA 358715 A CA358715 A CA 358715A CA 1159128 A CA1159128 A CA 1159128A
Authority
CA
Canada
Prior art keywords
photocell
motion sensing
pulse
light
inertial element
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
CA000358715A
Other languages
English (en)
French (fr)
Inventor
John L. Rolando
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
Application granted granted Critical
Publication of CA1159128A publication Critical patent/CA1159128A/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
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • 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
    • G01P15/093—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 photoelectric pick-up

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
CA000358715A 1980-03-31 1980-08-21 Motion sensing apparatus with variable threshhold Expired CA1159128A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13529980A 1980-03-03 1980-03-03
US135,299 1980-03-31

Publications (1)

Publication Number Publication Date
CA1159128A true CA1159128A (en) 1983-12-20

Family

ID=22467457

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000358715A Expired CA1159128A (en) 1980-03-31 1980-08-21 Motion sensing apparatus with variable threshhold

Country Status (5)

Country Link
JP (1) JPS56141524A (es)
CA (1) CA1159128A (es)
DE (1) DE3030087A1 (es)
GB (1) GB2072834B (es)
MX (1) MX148473A (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160319B (en) * 1984-05-01 1987-07-08 Fujitec Kk Detecting of seismic waves by sensing the movement of a liquid surface
JPS6117628U (ja) * 1984-07-06 1986-02-01 株式会社 日本アレフ 揺動検出素子
EP0455878A3 (en) * 1990-05-05 1992-01-22 Heraeus Sepatech Gmbh Laboratory centrifuge

Also Published As

Publication number Publication date
GB2072834B (en) 1984-02-15
DE3030087A1 (de) 1981-10-22
JPS56141524A (en) 1981-11-05
MX148473A (es) 1983-04-25
GB2072834A (en) 1981-10-07

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Legal Events

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