Accession Number : AD0751639

Title :   An Optical Object Detection System for Sensing Obstructions to Low Speed Vehicles.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Burman,George Alfred

Report Date : JUN 1972

Pagination or Media Count : 53

Abstract : An object detection system to sense obstructions in the path of low speed vehicles is described. The system uses a pulsed GaAs diode laser as an illuminator, and a PIN photodiode as a detector. Reliable detection of objects with an effective area as small as 0.5 sq/ft was achieved. A signal processor using active filters and a phase-locked loop tone decoder was employed for both phase and frequency rejection of undesired signals, and detection of objects under high ambient light conditions. (Author)

Descriptors :   (*FORKLIFT VEHICLES, *SAFETY), (*WAREHOUSES, FORKLIFT VEHICLES), OPERATION, PERSONNEL, WOUNDS AND INJURIES, OPTICS, PHOTODIODES, GAS LASERS, PREAMPLIFIERS, RANGE(DISTANCE), THESES

Subject Categories : Surface Transportation and Equipment
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE