Processing

Please wait...

Settings

Settings

Goto Application

1. WO1997049998 - ACCELEROMETER WITHOUT PROOF MASS

Publication Number WO/1997/049998
Publication Date 31.12.1997
International Application No. PCT/CA1997/000442
International Filing Date 24.06.1997
Chapter 2 Demand Filed 17.01.1998
IPC
G01F 1/684 2006.01
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
68by using thermal effects
684Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
G01P 15/00 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
G01P 15/08 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
G01P 15/12 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
12by alteration of electrical resistance
G01P 15/18 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
18in two or more dimensions
G01P 21/00 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
21Testing or calibrating of apparatus or devices covered by the other groups of this subclass
CPC
G01F 1/6845
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
1Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
68by using thermal effects
684Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
6845Micromachined devices
G01P 15/00
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
G01P 15/008
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
006by making use of fluid seismic masses
008by using thermal pick-up
G01P 15/0802
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
0802Details
G01P 15/12
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
12by alteration of electrical resistance
G01P 15/18
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
18in two or more dimensions
Applicants
  • SIMON FRASER UNIVERSITY [CA]/[CA]
Inventors
  • LEUNG, Albert, M.
Agents
  • VERMETTE & CO.
Priority Data
08/673,73326.06.1996US
08/800,58818.02.1997US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACCELEROMETER WITHOUT PROOF MASS
(FR) ACCELEROMETRE SANS MASSELOTTES
Abstract
(EN)
An accelerometer having a substrate with a cavity therein, a heater wire extending over the cavity, a pair of temperature sensor wires extending over said cavity equidistant from said heater, and means for passing electrical current through the heater so as to develop a symmetrical temperature gradient in the fluid extending outwardly from the heater to the two temperature sensors. The fluid may be a liquid or a gas surrounding the heater and temperature sensors. Applied acceleration disturbs this symmetry and produces a differential temperature between the two temperature sensors proportional to the acceleration.
(FR)
L'invention porte sur un accéléromètre fait d'un substrat comportant une cavité, un fil chauffant s'étendant au dessus de la cavité, une paire de fils détecteurs de température s'étendant au dessus de la cavité et équidistants du fil chauffant un moyen d'alimentation en courant du fil chauffant pour créer dans un fluide un gradient de température symétrique partant du fil chauffant en direction des deux détecteurs de température. Ledit fluide peut être un liquide ou un gaz entourant le fil chauffant et les détecteurs de température. L'application d'une accélération modifie la symétrie et produit entre les deux détecteurs de température un différentiel de température proportionnel à l'accélération.
Also published as
Latest bibliographic data on file with the International Bureau