An improved probe is provided for surface texture capacitive gauging. One embodiment of the probe comprises a sensor assembly with a thin, flexible dielectric having a conductive coating to provide an active sensor area and integral lead-in which is durable, flexible, and constant. In another embodiment, a bladder-like flexible dielectric contains a conductive media and the bladder is appropriately confined to define the active sensor area. The probe includes a mask to further define the active sensor area and to sense proper seating of the probe on the work surface to be gauged.
Capacitor Array Sensors For Determining Conformity To Surface Shape
Lawrence J. Rhoades - Pittsburg PA Donald Risko - Monroeville PA Ralph L. Resnick - Slickville PA
Assignee:
Extrude Hone Corporation - Irwin PA
International Classification:
G01B G01B 734
US Classification:
324675
Abstract:
A sensor for sensing and quantifying the conformity of a workpiece surface contour to a predetermined design contour. The sensor consists of an array of capacitor elements on a surface having the negative image of the predetermined design contour, against which the workpiece is mated. In operation, each of the capacitor elements and the workpiece are connected to a corresponding oscillator circuit so that the frequency of each circuit is a function of the capacitance between the individual plate element and the workpiece, while the capacitance is a function of the distance between the individual plate element and the workpiece. Hence the overall output of the circuits is a function of the conformity of the workpiece surface contour to the contour or topology of the sensor surface.
An improved probe is provided for surface texture capacitive gauging. One embodiment of the probe comprises a sensor assembly with a thin, flexible dielectric having a conductive coating to provide an active sensor area and integral lead-in which is durable, flexible, and constant. In another embodiment, a bladder-like flexible dielectric contains a conductive media and the bladder is appropriately confined to define the active sensor area. The probe may include a grounded mask to further define the active sensor area.
Capacitor Array Sensors Tactile And Proximity Sensing And Methods Of Use Thereof
Lawrence J. Rhoades - Pittsburgh PA Donald Risko - Monroeville PA Ralph L. Resnick - Slickville PA
Assignee:
Extrude Hone Corporation - Irwin PA
International Classification:
G01B 728 G01B 734
US Classification:
324 61QS
Abstract:
An arrangement for a tactile sensing system involved in the determination of object shape, contour, orientation and detection of slip finding one use in real time control of robotically manipulated tools. The sensor uses contact between the object and a gripper upon which the sensor is disposed wherein the object surface forms one plate of the sensing electrode.
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