Resources Contact Us Home
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
Multi-channel sessions
All hazards information distribution method and system, and method of maintaining privacy of distributed all-hazards information
Vector smoothing of complex-valued cross spectra to estimate power spectral density of a noise signal
Likelihood of mobile device portal transition
Differential dipole antenna system with a coplanar radiating structure and transceiver device
Semiconductor composite device, method of manufacturing the same, optical print head and image forming apparatus
Light emitting device and method of manufacturing the same
  Randomly Featured Patents
Vertical internal combustion engine provided with belt-drive transmission mechanism
Hollow, metallic golf club head with dendritic structure
Vehicle body
Open shipyard wire feeder
Perorally insertable gastroesophageal anti-reflux valve prosthesis and tool for implantation thereof
Automatic gas analysis and purging system
Optical disc drive
(N-Substituted-pyridyl)-alkyl sulfonic acid betaines as electroplating additives
Piperazine substituted aryl benzodiazepines
Methods of making transgenic animals producing oligosaccharides and glycoproteins