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Title: Tracking system

Abstract

A system of tracking the sun each day of the year with compensation for changes in time of sunrise and time of sunset as well as sun declination on a day to day basis, declination being under control of a crank that makes one revolution per year. The equation of time is under control of a cam that also revolves once a year and resets the clock to reflect solar rather than mean solar time in order to properly follow the sun. The position of sun acquisition and loss are a function of the declination and the time is a function of the clock corrected via the cam for equation of time. Thus, when the declination is reset each day, it sets the position of acquisition and loss while the clock, now set for the change due to the equation of time, determines the time of acquisition and loss.

Inventors:
;
Publication Date:
OSTI Identifier:
6053913
Patent Number(s):
US 4546756
Assignee:
G and G Solar, Inc. IFI; EDB-86-086331
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 14 Dec 1981; Other Information: PAT-APPL-330512
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SOLAR TRACKING SYSTEMS; DESIGN; TIME MEASUREMENT; HOURLY VARIATIONS; INCLINATION; POSITIONING; TIMING PROPERTIES; EQUIPMENT; HELIOSTATS; SOLAR CELL ARRAYS; SOLAR COLLECTORS; SOLAR EQUIPMENT; SOLAR TRACKING; VARIATIONS; 141000* - Solar Collectors & Concentrators

Citation Formats

Leroy, V. A., and Gaedtke, H. D. Tracking system. United States: N. p., 1985. Web.
Leroy, V. A., & Gaedtke, H. D. Tracking system. United States.
Leroy, V. A., and Gaedtke, H. D. 1985. "Tracking system". United States. doi:.
@article{osti_6053913,
title = {Tracking system},
author = {Leroy, V. A. and Gaedtke, H. D.},
abstractNote = {A system of tracking the sun each day of the year with compensation for changes in time of sunrise and time of sunset as well as sun declination on a day to day basis, declination being under control of a crank that makes one revolution per year. The equation of time is under control of a cam that also revolves once a year and resets the clock to reflect solar rather than mean solar time in order to properly follow the sun. The position of sun acquisition and loss are a function of the declination and the time is a function of the clock corrected via the cam for equation of time. Thus, when the declination is reset each day, it sets the position of acquisition and loss while the clock, now set for the change due to the equation of time, determines the time of acquisition and loss.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1985,
month =
}
  • A tracking lens system for solar collectors or skylights is described consisting of an array of condensing lenses, a movable array of diverging lenses, and a second array of condensing lenses. By moving the array of diverging lenses, sunlight incident from any small angle can be tracked. The light leaving the tracking lens system can be parallel rays coaxial with the lens system, or can be focused upon a collecting means.
  • This patent describes a pressurized water drive system to move a power transmission in one direction or a opposite direction, comprising: (a) two sealed sections of compact, collapsible, flat hose arranged in a line, each section having one end to be joined to an end of the other section, and each section having a second end having an orifice, and each section being arranged in up and down side by side portions for endwise compression of the hose section. The hose section under compression has water contained in the hose section drained out of the end orifice, where the othermore » section is expanded by receiving water under pressure through the other section orifice; (b) a power take off secured to the two sealed sections where they are joined together; (c) a housing within which the two sealed sections expand and contract, having an elongated opening to accommodate the transitory movement of the power take off, and having openings to provide access to the orifices on the two sealed sections; (d) a water control assembly to direct pressurized water alternately to respective orifices of the two sealed sections of one section of the flat hose and thereby expanding the flat hose, moving the power take off in one direction or in the opposite direction by expanding the other section of flat hose; and (e) a power transmission, connected to the power take off, to transmit the motion of the power take off to solar energy collectors in their tracing of the sun.« less
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  • A vehicle tracking system is described for determining the lateral position of a vehicle relative to a desired roadway path including substantially parallel thereto an optically distinct feature comprising, in combination: scanning means functionally attached to the vehicle for optically scanning, at a known rate, a path having a component transverse the intended direction of travel of the vehicle at time spaced intervals as the vehicle travels along the roadway. The scan means produces a signal corresponding to the reflection of the scanned path; means concurrently storing the signals resulting from the time spaced scans including the signal portion correspondingmore » to the optically distinct feature; and means responsive to the stored signals from successive scans for producing signals indicative of the time deviation of the signal portion resulting from successive scans for thereby determining the amount of lateral displacement of the vehicle relative to the optically distinct feature.« less
  • A position and orientation tracking system presents a laser scanning apparatus having two measurement pods, a control station, and a detector array. The measurement pods can be mounted in the dome of a radioactive waste storage silo. Each measurement pod includes dual orthogonal laser scanner subsystems. The first laser scanner subsystem is oriented to emit a first line laser in the pan direction. The second laser scanner is oriented to emit a second line laser in the tilt direction. Both emitted line lasers scan planes across the radioactive waste surface to encounter the detector array mounted on a target roboticmore » vehicle. The angles of incidence of the planes with the detector array are recorded by the control station. Combining measurements describing each of the four planes provides data for a closed form solution of the algebraic transform describing the position and orientation of the target robotic vehicle. 14 figs.« less