METHOD, SYSTEM AND APPARATUS FOR CAPACITIVE SENSING

摘要

A system for obtaining incremental and absolute displacement measurements using systems of electrodes that interact to form variable capacitors and systems that facilitate implementation of the method along with exemplary embodiments of these systems. The capacitors created by the disclosed method have known physical properties and corresponding known mathematical relationships. These laws are exploited in such a way by our method as to overcome inadequacies in existing systems and create superior systems. These superior systems improve upon the existing art by including economically and reliably made sensors based on the area varying principle which eliminate dead zone issues and increase accuracy through a reduction of the influence of gap variations on capacitive systems through the use of compensatory geometrical arrangements of multiple capacitive systems.

主权项

1. A composite capacitive displacement measurement system comprising:
one or more composite components (STATORs) that are stationary with respect to a predetermined globe system, and each of the composite components comprising:
an electrically insulated substrate having at least a pair of electrically conductive capacitive electrodes located a predetermined distance from one another, where the electrodes are alternatively electrically connected together to form two capacitive series; one or more composite components (MOVERs) that are mobile and move in a controlled manner with respect to the predetermined corresponding components that are stationary relative to the globe system, and each of the components comprising:
an electrically insulated substrate having at least one ground series of electrically conductive ground electrodes located a predetermined distance from one another, where the ground electrodes are electrically connected together to form a ground series; and one or more circuits comprising:
an electronic signal processing unit;a system ground;conducting components connecting the ground series to the system ground; and conducting components connecting the capacitive series to the electronic signal processing unit.