Multi-level probe and system for measurement of physical conditi

Details Multi-level probe and system for measurement of physical conditi Multi-level probe and system for measurement of physical conditi

1990-06-08

1992-06-09

Lall, Parshotam S.

Boots, shoes, and leggings

73 1H, 73602, 73290V, 181124, 181402, 340621, 364556, 367 99, 367151, 367908, G01S 1500, G01N 2914, G01N 2922, G01N 2924

Patent

active

051213400

ABSTRACT:
A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a reference axis from an associated transducer. The opening in each reflector permits most of the sonic energy to pass to a subsequent reflective surface, while the periphery about the opening provides echo signals for determining physical conditions in the environment through which the sonic energy has passed. A novel system is used for determining physical conditions that are a function of time differences between signals from different reflectors, calculated with a highly efficient digital signal processing algorithm.

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