Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Patent
1996-08-30
1999-03-16
Wachsman, Hal Dodge
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
702 67, 702 78, 702 79, 250395, 25036307, G01T 702
Patent
active
058842349
ABSTRACT:
The present invention is based on a digital pulse sampling and detection technique which samples a nuclear pulse train at a constant frequency asynchronously with the actual pulses, which occur at random times. The shape of pulses representative of the interaction of nuclear particles or gamma-rays with a nuclear detector is analyzed to determine the pulse length. Nuclear particles or gamma-rays are detected. A signal is formed containing pulses representative of the particles or gamma-rays. The pulses are sampled at a constant frequency to form a digital image of the pulse train. The pulse length is determined by counting the number of pulses with a first number of consecutive samples above a threshold and by counting the number of pulses with a second number of consecutive samples above the threshold. A ratio of the first and second number of consecutive samples is obtained. The ratio is used to adjust the pulse length.
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Jorion Bruno
Stoller Christian
Jeffery Brigitte L.
Ryberg John J.
Schlumberger Technology Corporation
Wachsman Hal Dodge
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