Accession Number:

AD0611419

Title:

TESTS OF A MOTION PICKUP OF THE INFRA-RED TYPE,

Descriptive Note:

Corporate Author:

NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s):

Report Date:

1964-10-01

Pagination or Media Count:

23.0

Abstract:

A pickup suitable for the measurement of ocean water level variations is described. Tests were conducted in the laboratory of a development model of the motion pickup using an infra-red source light bulb as the motion sensor. Specifically, an infra-red sensitive photocell is positioned so as to receive energy from a source only when a hole in the rim of a wheel is in the plane of the source and the center of the wheel. Then, as the wheel is caused to rotate, the cell receives a pulse of energy, through the hole from the moving source and thereby activates a time measuring circuit. The wheel continues to rotate until the hole is next positioned so that the cell receives a pulse of energy from a fixed source. This causes the time measuring circuit to stop and from calibration data the position of the moving source relative to a given horizontal plane is calculated and recorded plotted. Successive positions of the moving source are calculated and recorded to provide a continuous record as a function of time of the displacement of the moving source.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE