Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2008-04-29
2008-04-29
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S437000, C073S024020
Reexamination Certificate
active
07365352
ABSTRACT:
A gas flux measuring device measures a region, such as a forest, as a measuring object with no influence by concomitants and with high responsiveness and excellent measuring stability. The device includes a laser beam source, laser output controller, wavelength modulation controller, first light receiver, first direct current component detector, first wavelength modulation demodulator, optical system, reference cell, second light receiver, second direct current component detector, second wavelength modulation demodulator, third wavelength modulation demodulator, analyzer, adder, temperature measurement and pressure measurement. A flow velocity measuring device directly measures horizontal 2-directional flow velocity components and a vertical directional flow velocity component of a gas flow in the measuring region and puts out these measurement signals into the analyzer. Based on the signals inputted from the flow velocity measuring device, the analyzer makes an analysis based on the eddy correlation method and obtains, by calculation using this analysis result, a momentum flux and concentration of the measuring object gas.
REFERENCES:
patent: 5026991 (1991-06-01), Goldstein et al.
patent: 5047639 (1991-09-01), Wong
patent: 5303024 (1994-04-01), Thierman
patent: 6064488 (2000-05-01), Brand et al.
patent: 8-261891 (1996-10-01), None
patent: 8-261892 (1996-10-01), None
patent: 9-236542 (1997-09-01), None
patent: 10-153548 (1998-06-01), None
patent: 11337483 (1999-12-01), None
patent: 2001-74653 (2001-03-01), None
patent: 2001074654 (2001-03-01), None
patent: 2004-219379 (2004-08-01), None
Yoshinari Goto, “Characteristics of Turbulent Intensities and Simplified Methods for Estimating Temperture and Specific Humidity Fluxes in the Unstable Stratification”, Journal of Japan Society of Hydrology & Water Resources, vol. 13, No. 2, 2000, pp. 114-123 (with partial English translation).
Volker Thiermann, “A Displaced-Beam Scintillometer for Line-Averaged Measurements of Surface Layer Turbulence”, Tenth Symposium on Turbulence and Diffusion, Sep. 19-Oct. 2, 1992, pp. 224-247.
O. Nakaya et al. “Analysis of Turbulence Characteristics for Assessment of CO2Flux in Birch Forests of the East Foot of Mt. Asama”, Lecture at Joint Meeting of Four Academies related to Agricultural Environment Engineering, Aug. 6-8, 2002 at the Faculty of Agriculture, Tokyo, University (with partial English translation).
N. Kagawa et al., “Velocimetry Using Spatial Filtering of Scintillation of Laser Beam”, Publication of Electronics, Information and Systems Society, vol. 118-C, No. 12, Dec. 1998, pp. 1792-1797 (with partial English translation).
N. Moji, “Proposal on GHG (green house gas) Flux Measuring Method in Forests”, Center for Global Environment Research, National Institute for Environmental Studies, Environment Agency of Japan, 2000, pp. 3-80 (with partial English translation).
Jun Asanuma et al., “Turbulence Variance Characteristics Above a Flat Pine Forest and the Surface Flux Estimation with Variance Methods”, Journal of Japan Society of Hydrology & Water Resources, vol. 10, No. 6, 1997, pp. 515-523 (with partial English translation).
O. Nakaya et al., “Introduction of CO2Flux Continuous Observations in Birch Forests of the East Foot of Mt. Asama”, 2002 CGER Flux Research Meeting, Nov. 14, 2002, p. 58 (with partial English translation).
Muta Kenji
Nakaya Ko
Tanoura Masazumi
Central Research Institute of Electric Power Industry
Mitsubishi Heavy Industries Ltd.
Pyo Kevin
Sohn Seung C
Wenderoth , Lind & Ponack, L.L.P.
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