JOHN ROGER SMITH
Medical Practice in Monroeville, PA

5005142, Apr 2, 1991

Jul 24, 1989

7/386008

John B. Lipchak - Forest Hills PA
Tod A. Oblak - Belle Vernon PA
Fred H. Bednar - Millvale PA
William Ciaramitaro - Murrysville PA
Francis R. Hughes - Verona PA
John R. Smith - Monroeville PA
Gregory A. Gisoni - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1700, G05B 1502

364550

The present invention is a component monitoring system which includes all sensor and plant component monitoring at distributed plant locations close to the sensors which are the source of the signals to be analyzed. Minimally preconditioned analog sensor signals are multiplexed and further conditioned by a sensor signal preprocessor that adjusts the gain and filters the sensor signals before being applied to an analog-to-digital converter controlled by a data acquisition computer. The analog sensor signals are converted into digital samples and stored in a data memory of a digital signal processor using a direct memory access technique. The data acquisition computer also controls the selection of sensors, gain, etc. , based on commands from a controller. The digital signal processor, once sufficient sensor data has been collected, performs appropriate processing using known digital signal processing techniques.

5319972, Jun 14, 1994

Oct 19, 1992

7/963892

Tod A. Oblak - Belle Vernon PA
Daniel F. Dudek - Forest Hills PA
John R. Smith - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

G01F 2300

73290R

An ultrasonic level measuring system includes a transducer mounted on the bottom of a pipe which launches acoustic pulses up through the pipe wall into the water. The pulses are reflected from the water surface and received by the transducer along with pulses reflected by the pipe wall and reverberations within the pipe wall. The system has a monitor mode in which a variable threshold for the reflected pulses is set by dividing the time after a trigger pulse into time bins and automatically establishing a threshold level for each time bin. In a signal search mode, the time bin containing the liquid level is identified from a histogram recording reflected pulses which exceed the threshold levels for the various time bins. In a normal operating mode, foreground calculations precisely calculating the liquid level in the identified bin alternate with background calculations which reassess the identification of the time bin containing the liquid level. If the bin identified by the background calculation does not agree with the time bin being used by the foreground calculation, the system restarts by returning to the signal search mode.

4642636, Feb 10, 1987

Dec 30, 1983

6/567456

John R. Smith - Monroeville PA
Thomas J. Kenny - Pittsburgh PA
Kingsley F. Graham - Murrysville PA
James A. Neuner - Richland Township PA
Douglas A. Bauman - Monroeville PA
Timothy F. Thompson - Pittsburgh PA
William W. Wassel - Penn Township PA
Dhulipala M. Rao - Pittsburgh PA
David G. Theriault - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

H04Q 900, G05B 2302

34087004

Numerous signal conditioning circuits on a plurality of printed circuit boards are calibrated remotely by a signal processing unit which sends coded signals to each board, either sequentially or in parallel, to connect either on-board or off-board test signals to one of the conditioning circuits in place of its field generated input. The processing unit utilizes the actual and expected responses of each conditioning circuit to low and high test signals to generate a gain and an offset which are applied to the conditioned field signal to provide a calibrated signal. The time constant for each conditioning circuit is also measured periodically, or upon a selected temperature change, for use in generating a minimum waiting period for obtaining valid data following transfers between the field generated signals and the test signals.

4770842, Sep 13, 1988

Nov 20, 1986

6/934238

Thomas F. Kelly - Washington DC
Eric H. Naviasky - Baltimore MD
Daniel W. Jefferies - Glen Burnie MD
William P. Evans - Glen Burnie MD
John R. Smith - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 736

376216

The present invention is a multimode sensor system that transmits power down a common bus coaxial cable typically using an alternating current power source. Each remote unit connected to the coaxial cable and through an isolation transformer converts the alternating current power to direct current power for an integrated circuit bus interface. The interface is connected to the sensors. The interface is externally pin programmable to provide a carrier at a frequency for a channel assigned to the remote unit. The carrier is provided by a ripple counter producing a frequency divided signal compared to a fixed reference frequency, where the result of the comparison controls a voltage controlled oscillator. When plural low frequency analog signals are to be transmitted over the common bus, an on-chip multiplexer multiplexes the signals to an off-chip, external analog-to-digital converter. The analog-to-digital converter loads an on chip parallel to serial register that applies each bit of the sampled signal serially to an on chip Manchester encoder.

5084868, Jan 28, 1992

May 13, 1988

7/193698

Thomas F. Kelly - Washington DC
Eric H. Naviasky - Baltimore MD
Daniel W. Jefferies - Glen Burnie MD
William P. Evans - Glen Burnie MD
John R. Smith - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

H04J 102, H04J 100

370 691

The present invention is a multimode sensor system that transmits power down a common bus coaxial cable typically using an alternating current power source. Each remote unit connected to the coaxial cable and through an isolation transformer converts the alternating current power to direct current power for an integrated circuit bus interface. The interface is connected to the sensors. The interface is externally pin programmable to provide a carrier at a frequency for a channel assigned to the remote unit. The carrier is provided by a ripple counter producing a frequency divided signal compared to a fixed reference frequency, where the result of the comparison controls a voltage controlled oscillator. When plural low frequency analog signals are to be transmitted over the common bus, an on-chip multiplexer multiplexes the signals to an off-chip, external analog-to-digital converter. The analog-to-digital converter loads an on chip parallel to serial register that applies each bit of the sampled signal serially to an on chip Manchester encoder.

4285241, Aug 25, 1981

Jul 13, 1979

6/057524

John R. Smith - Monroeville PA
William Ciaramitaro - Murrysville PA
Raj Gopal - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

G01H 1300, G01M 700

73572

The impact signal derived from an acoustic transducer has a unique signature represented by its frequency spectrum. The present invention generates under predetermined conditions with objects, each of definite weight and form, a series of impact signals for reference purposes and correlates an actual impact signal from an unknown impacting object with such reference impact signals by comparing the frequency spectra, thereby to indirectly recognize the impacting object.