Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for detection of edge position thickness or splice position of a material web










Image Number 5 for United States Patent #5583828.

A series of pulses of ultrasonic wave emitted from the transmitter with a specified period are received by the receiver. The received signals are rectified to a smooth wave with a single peak. The occurrence time of the peak is determined to gain and store the peak value, which corresponds to the edge position, thickness or splice position of the web. Alternatively, the transmitter emits a series of pulses of ultrasonic wave with a specified period and the peak value in the signals received by the receiver is once held in the peak-holding circuit. The peak voltage held is discharged and reduced with the discharge device and smoothing of the charged voltage yields its mean value, which corresponds to the edge position, thickness or splice position of the web.








 
 
  Recently Added Patents
Push to release cover for a portable electronic device
Method and apparatus for image sensor packaging
Plants and seeds of hybrid corn variety CH514730
Selective high frequency spinal cord modulation for inhibiting pain with reduced side effects, and associated systems and methods
Load balancing for parallel tasks
Image forming apparatus detecting color patterns and generating interleaf images at predetermined position
Method and apparatus for disease diagnosis and screening using extremely low frequency electromagnetic fields
  Randomly Featured Patents
Doped manganese dioxides
Scheduled transmission in a wireless sensor system
Gaming system and method of gaming
Liquid level sensor and liquid level estimation method
Antagonism of central nervous system drugs by the administration of 4-aminopyridine alone or in combination with other drugs
LED array having array-based LED detectors
Method for moving object detection and hand gesture control method based on the method for moving object detection
Disposable injector with manually actuated piston
Hockey goalie stick
Apparatus for filling containers