Successive approximation envelope detection for estimating the a

Details Successive approximation envelope detection for estimating the a Successive approximation envelope detection for estimating the a

1982-10-08

1984-10-09

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

324 99D, G01N 2902

Patent

active

044753985

ABSTRACT:
The attenuation of RF pulses passing through a mineral slurry is determined by measuring the amplitude of the envelope produced by a series of successively occurring attenuated electrical pulses. The pulses are applied to the input of a variable gain amplifier, the gain of which is under control of a digital processor. The peak amplitude of each pulse is compared with a fixed reference voltage. The contents of a storage register associated with the processor is modified dependent upon whether the pulse amplitude is geater or less than the reference voltage. The contents of the register is used to control the gain of the variable gain amplifier in such a way that the amplitude of the next successive pulse will approach the value of the reference voltage. After the last pulse has been measured, the gain of the amplifier is inversely proportional to the amplitude of the pulse envelope, and the contents of the successive approximation register will also be proportional to the amplitude of the pulse envelope. The system may be calibrated using a precision attenuator to establish the degree of attenuation when no slurry is present.

REFERENCES:
patent: 2845597 (1958-07-01), Perkins
patent: 3159787 (1964-12-01), Sexton et al.
patent: 3703002 (1972-11-01), Van Saun
patent: 4069452 (1978-01-01), Conway et al.

Affiliated with

Also associated with

Rating

Successive approximation envelope detection for estimating the a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Successive approximation envelope detection for estimating the a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Successive approximation envelope detection for estimating the a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1594048