CA1159128A - Motion sensing apparatus with variable threshhold - Google Patents
Motion sensing apparatus with variable threshholdInfo
- 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
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13529980A | 1980-03-31 | 1980-03-31 | |
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)
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 |
-
1980
- 1980-08-08 DE DE19803030087 patent/DE3030087A1/de not_active Withdrawn
- 1980-08-21 CA CA000358715A patent/CA1159128A/en not_active Expired
- 1980-08-28 GB GB8027816A patent/GB2072834B/en not_active Expired
- 1980-09-02 MX MX18377280A patent/MX148473A/es unknown
- 1980-09-12 JP JP12615680A patent/JPS56141524A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3030087A1 (de) | 1981-10-22 |
GB2072834B (en) | 1984-02-15 |
GB2072834A (en) | 1981-10-07 |
JPS56141524A (en) | 1981-11-05 |
MX148473A (es) | 1983-04-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |