Measuring and testing – Dynamometers – Responsive to torque
Patent
1985-07-22
1987-01-20
Ruehl, Charles A.
Measuring and testing
Dynamometers
Responsive to torque
73779, 324207, 331 65, G01L 310, G01B 716
Patent
active
046372652
ABSTRACT:
Sensor apparatus which uses non-contacting, inductance coil sensors to transfer information about a parameter being monitored from a moving member to an indicator mechanically isolated from the moving member. The inductance coil sensors each have a stationary tank circuit and a movable tank circuit which are inductively coupled to produce a double resonance curve for the stationary tank circuit. The parameter is sensed by a unit having inductively coupled components. This unit is connected to the moving tank circuit to change the inductance of the moving tank circuit in accordance with changes in the inductive coupling of the sensing unit which, in turn, are dependent upon the parameter being monitored. As the inductance of the moving tank circuit changes, the relative frequency, amplitude and phase characteristics of the resonance peaks of the stationary tank circuit change. The degree of change of these characteristics is a measure of parameter. In order to reduce or eliminate common mode errors, the sensing unit is arranged to develop oppositely directed signals which are time multiplexed to produce difference signals.
REFERENCES:
patent: 2732713 (1956-01-01), Willits
patent: 3656132 (1972-04-01), Brumbelow
patent: 3906787 (1975-09-01), Wingbermuhle
Ruehl Charles A.
Sensor Technologies Inc.
LandOfFree
Sensor apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensor apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensor apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2129116