Methods and systems for capacitive motion sensing and position control
AssigneeGeneral Electric Company
InventorsMark A. Johnson, Vivek Bhatt
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Abstract
A system for detecting motion and proximity by determining capacitance between a sensor and an object. The sensor includes sensing surfaces made of a thin film of electrically conductive material mounted on a non-conductive surface. In another embodiment, the sensor is a human body. The sensor senses the capacitance between a sensor's surface and an object in its vicinity and provides the capacitance to a control system that directs machine movement. Because the sensor does not require direct contact or line-of-sight with the object, a machine can be controlled before harm occurs to the object.
Claims14
A medical imaging system comprising:
- a radiation source comprising at least one capacitance based proximity sensor;
- a capacitive sensing circuit;
- an object electrically coupled to said capacitive sensing circuit using a conductive strap;
- and
- a control system configured to control positioning of said radiation source and said proximity sensor based on an input received from said capacitive sensing circuit.
Dependencies are inferred from the claim text.