Optics: measuring and testing – Photometers – Photoelectric
Patent
1978-02-10
1981-03-03
Corbin, John K.
Optics: measuring and testing
Photometers
Photoelectric
356318, 356 43, G01J 142, G01J 548, G01J 500
Patent
active
042537649
ABSTRACT:
A complete system for detecting and metering solar energy and recording the total integrated energy or power levels over a desired period of time. The system emphasises simplicity of design to achieve: a transducer sensitive to the presence of solar radiance which efficiently absorbs the incident direct energy over the broad solar spectrum or may be filtered to specific spectra bands and which embodies a means of generating a voltage proportional to the levels of incident solar energy; a means of selecting the minimum level of incident energy for initiating metering above a preset threshold and rejecting levels below a given ambient temperature level; a programable means of computing which directly converts the energy proportional voltage to an energy-density analogue voltage that may be programed to replicate the performance characteristics of known or typical Solar Energy Systems and whose values may be scaled to the equivalent units of thermal, electrical or mechanical energy or power measurement desired; a means of recording the sum-total of the energy or power levels measured, whose instantaneous values are integrated continuously over the desired period of time, and which may be read directly and reset for each period; and an optional means of monitoring and calibration of the system. The recorded data is measured in such values as are directly related to the potential thermal, electrical or mechanical power that would be produced by a typical solar energy system installed at the site of measurement. The metering and recording system could also be employed to monitor the actual performance of an installed solar energy system or other solar powered device.
REFERENCES:
patent: 3880528 (1975-04-01), petersen
G. G. Lebed', L. V. Gushchina, D. A. Nazarov, "A Device for Automatically Metering Light Energy" Instrumentation and Control, No. 4, Apr. 1971, pp. 67-69.
R. M. Master, "Solar Energy Meter" NASA publication TM-73791, Sep. 1977.
Bovernick Rodney B.
Corbin John K.
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