Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-08-07
1992-06-09
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023110, 73516LM, 73517A, 7386171, H01J 516
Patent
active
051209519
ABSTRACT:
A sensor includes a light source (24) and photosensor (28) which are disposed on opposite sides of a fluid flow passageway. A resilient member is fixedly supported at one end or edge and entrained in the fluid (14) for varying the amount of light incident on the photosensor (28) from the light source (24) as a function of the amount of deflection of the resilient member caused by motion of the fluid (14) in the passageway. The resilient member may be an optical fiber (18) which transmits light from the light source (24) toward the photosensor (28). Alternatively, the resilient member may be a curtain (62) which variably blocks propagation of light from the light source (24) to the photosensor (28). The passageway may be defined by a container (12) which is filled with the fluid (14), and the sensor constructed to sense rotational or linear motion of the container (12) relative to the fluid (14). In this case, the fluid resists movement due to stationary inertia, thereby causing relative deflection of the entrained resilient member. Alternatively, the passageway may be maintained stationary, and a fluid directed to flow therethrough which causes deflection of the resilient member and enables measurement of the rate of fluid flow through the passageway.
REFERENCES:
patent: 3224279 (1965-12-01), Galli et al.
patent: 3940609 (1976-02-01), Johnstun
patent: 4307618 (1981-12-01), James et al.
patent: 4376390 (1983-03-01), Rines
patent: 4419895 (1983-12-01), Fuller
patent: 4472022 (1984-09-01), Bearcroft et al.
patent: 4593555 (1986-06-01), Krutz et al.
patent: 4679029 (1987-07-01), Krohn et al.
patent: 4718276 (1988-01-01), Laughlin
A Versatile Wide Dynamic Range MHD Angular Sensor, M. Hawes, et al., Applied Technology Associates, Inc.
Denson-Low W. K.
Duraiswamy V. D.
Hughes Aircraft Company
Lee John R.
Nelms David C.
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