Analog circuit for controlling acoustic transducer arrays

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:868021

Drumheller, Douglas S ^[1]

---

1. Cedar Crest, NM

A simplified ananlog circuit is presented for controlling electromechanical transducer pairs in an acoustic telemetry system. The analog circuit of this invention comprises a single electrical resistor which replaces all of the digital components in a known digital circuit. In accordance with this invention, a first transducer in a transducer pair of array is driven in series with the resistor. The voltage drop across this resistor is then amplified and used to drive the second transducer. The voltage drop across the resistor is proportional and in phase with the current to the transducer. This current is approximately 90 degrees out of phase with the driving voltage to the transducer. This phase shift replaces the digital delay required by the digital control circuit of the prior art.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-76
• Assignee: Teleco Oilfield Services Inc. (Meriden, CT)
• Patent Number(s): US 5056067
• OSTI ID: 868021
• Country of Publication: United States
• Language: English

Related Subjects

analog
circuit
controlling
acoustic
transducer
arrays
simplified
ananlog
electromechanical
pairs
telemetry
comprises
single
electrical
resistor
replaces
digital
components
accordance
pair
array
driven
series
voltage
drop
amplified
drive
proportional
phase
current
approximately
90
degrees
driving
shift
delay
required
control
prior
acoustic transducer
phase shift
control circuit
voltage drop
single electrical
analog circuit
digital control
acoustic telemetry
electromechanical transducer
mechanical transducer
transducer array
digital delay
/367/340/