Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Non-contact capacitance based image sensing method and system

Patent ·
OSTI ID:869691
 [1];  [2]
  1. 11048 Malaguena Ln. N.E., Albuquerque, NM 87111
  2. 4915 Glenwood Hills Dr. N.E., Albuquerque, NM 87111
+ Show Author Affiliations
A system and a method is provided for imaging desired surfaces of a workpiece. A sensor having first and second sensing electrodes which are electrically isolated from the workpiece is positioned above and in proximity to the desired surfaces of the workpiece. An electric field is developed between the first and second sensing electrodes of the sensor in response to input signals being applied thereto and capacitance signals are developed which are indicative of any disturbances in the electric field as a result of the workpiece. An image signal of the workpiece may be developed by processing the capacitance signals. The image signals may provide necessary control information to a machining device for machining the desired surfaces of the workpiece in processes such as deburring or chamfering. Also, the method and system may be used to image dimensions of weld pools on a workpiece and surfaces of glass vials. The sensor may include first and second preview sensors used to determine the feed rate of a workpiece with respect to the machining device.
Research Organization:
AT & T CORP
DOE Contract Number:
AC04-76DP00789
Assignee:
Novak, James L. (11048 Malaguena Ln. N.E., Albuquerque, NM 87111);Wiczer, James J. (4915 Glenwood Hills Dr. N.E., Albuquerque, NM 87111)
Patent Number(s):
US 5378994
OSTI ID:
869691
Country of Publication:
United States
Language:
English

References (2)

An Approach to Automated Deburring by Robot Manipulators journal December 1986
Basic principles in designing highly reliale multi-terminal capacitor sensors and performance of some laboratory test models journal January 1982

Similar Records

Related Subjects

/324/65/173/382/
applied
applied thereto
based
based image
capacitance
capacitance based
capacitance signals
chamfering
control
deburring
desired
desired surface
desired surfaces
determine
developed
device
dimensions
disturbances
electric
electric field
electrically
electrically isolate
electrically isolated
electrodes
feed
feed rate
field
glass
image
image dimensions
image sensing
image signal
image signals
imaging
imaging desired
indicative
information
input
input signal
input signals
isolated
machining
method
non-contact
non-contact capacitance
pools
positioned
preview
processes
processing
provide
provided
proximity
rate
respect
response
result
sensing
sensing electrode
sensing electrodes
sensing method
sensor
sensors
signal
signals
surfaces
thereto
vials
weld
weld pool
workpiece