Insolation sensor
First Claim
1. An insolation detection system comprising:
- an insolation sensor including;
a) light shading means having a transmission aperture defined therein for transmitting a solar beam as a spot, andb) a position detection element disposed in a spaced-apart relationship with respect to said light shading means, said position detection element outputting an electrical signal corresponding to a position of said solar beam irradiated through said transmission aperture and corresponding to an intensity of said solar beam, said position detection element havingi) a transparent X-direction resistor film,ii) a photoelectric conversion film disposed on said X-direction resistor film, for generating a photocurrent by means of a photoelectromotive force occurring at a portion of said photoelectric conversion film irradiated by said solar beam,iii) a Y-direction resistor film disposed on said photoelectric conversion film,iv) a pair of X-direction electrodes disposed at end portions of said X-direction resistor film opposing each other and having a resistance value lower than that of said X-direction resistor film, andv) a pair of Y-direction electrodes disposed at end portions of said Y-direction resistor film in a direction orthogonally crossing said X-direction electrodes, and having a resistance value lower than that of said Y-direction resistor film;
irradiation direction determining means, operatively connected to said pairs of X-direction and Y-direction electrodes, for determining the irradiation direction of said solar beam based on a ratio of current values output from said pair of said X-direction electrodes and a ratio of current values output form said pair of said Y-direction electrodes; and
irradiation intensity determining means, operatively connected to said pair of X-direction and Y-direction electrodes, for determining an intensity of said solar beam irradiation by summing up currents flowing through one of said pair of X-direction electrodes and said pair of Y-direction electrodes.
1 Assignment
0 Petitions
Accused Products
Abstract
An insolation sensor for detecting a substantial insolation direction from the sun including a light shading film an aperture defined therein and provided on one of the surfaces of a glass substrate. A position detection element having a photoelectric conversion film made of a semiconductor is formed on the other surface. The rays of light from the sun are incident as a spot beam H onto the position detection element through the aperture. The position detection element detects a center of the intensity of photocurrent at the beam receiving portion. Therefore, even when the intensity of each of the direct rays and scattered rays from the sun change on the ground depending on the weather conditions, the center position of the distribution of the insolation intensity can be detected in accordance with the weather conditions, and a substantial insolation direction can be detected.
19 Citations
23 Claims
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1. An insolation detection system comprising:
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an insolation sensor including; a) light shading means having a transmission aperture defined therein for transmitting a solar beam as a spot, and b) a position detection element disposed in a spaced-apart relationship with respect to said light shading means, said position detection element outputting an electrical signal corresponding to a position of said solar beam irradiated through said transmission aperture and corresponding to an intensity of said solar beam, said position detection element having i) a transparent X-direction resistor film, ii) a photoelectric conversion film disposed on said X-direction resistor film, for generating a photocurrent by means of a photoelectromotive force occurring at a portion of said photoelectric conversion film irradiated by said solar beam, iii) a Y-direction resistor film disposed on said photoelectric conversion film, iv) a pair of X-direction electrodes disposed at end portions of said X-direction resistor film opposing each other and having a resistance value lower than that of said X-direction resistor film, and v) a pair of Y-direction electrodes disposed at end portions of said Y-direction resistor film in a direction orthogonally crossing said X-direction electrodes, and having a resistance value lower than that of said Y-direction resistor film; irradiation direction determining means, operatively connected to said pairs of X-direction and Y-direction electrodes, for determining the irradiation direction of said solar beam based on a ratio of current values output from said pair of said X-direction electrodes and a ratio of current values output form said pair of said Y-direction electrodes; and irradiation intensity determining means, operatively connected to said pair of X-direction and Y-direction electrodes, for determining an intensity of said solar beam irradiation by summing up currents flowing through one of said pair of X-direction electrodes and said pair of Y-direction electrodes.
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2. An insolation detection system comprising:
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an insolation sensor including; a) light shading means having a transmission aperture defined therein for transmitting a solar beam as a spot, and b) a position detection element disposed in a spaced-apart relationship with respect to said light shading means, for outputting an electrical signal corresponding to a position of said solar beam irradiated through said transmission aperture and corresponding to an intensity of said solar beam, said position detection element having i) a transparent resistor film, ii) a photoelectric conversion film disposed on said transparent resistor film, for generating a photocurrent by means of photoelectromotive force occurring at a portion of said photoelectric conversion film irradiated by said solar beam, iii) a common electrode disposed on said photoelectric conversion film, iv) a pair of X-direction electrodes disposed at end portions of said resistor film opposing each other, and having a resistance value lower than that of said resistor film, and v) a pair of Y-direction electrodes disposed at end portions of said resistor film different from said end portions in a direction orthogonally crossing a pair of said X-direction electrodes, and having a resistance value lower than of said resistor film; irradiation direction determining means, operatively connected to said pairs of X-direction and Y-direction electrodes, for determining the irradiation direction of said solar beam based on a ratio of current values output from said pair of said X-direction electrodes and a ratio of current values output from said pair of said Y-direction electrodes; and irradiation intensity determining means, connected to said pair of X-direction and Y-direction electrodes, for determining an intensity of said solar beam irradiation by summing up currents, each flowing through one of the four electrodes forming said pair of said X-direction electrodes and said pair of said Y-direction electrodes.
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3. An insolation detection system comprising:
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an insolation sensor having a light shade with a transmission hole disposed therein to transmit a solar beam as a spot onto a position detection element disposed in a spaced-apart relationship with said light shade, the position detection element outputting electrical signals, on a pair of X-direction electrodes and on a pair of Y-direction electrodes, corresponding to a position of a solar beam irradiated through said transmission hole and corresponding to the intensity of the solar beam; irradiation direction determining means, connected to said pairs of X-direction and Y-direction electrodes, for determining the irradiation direction of said solar beam on the basis of a ratio of current values output from said pair of said X-direction electrodes and a ratio of current values output from said pair of said Y-direction electrodes; and irradiation intensity determining means, connected to said pairs of X-direction and Y-direction electrodes, for determining an intensity of said solar beam irradiation by summing up currents flowing through one of a pair of said electrodes, selected from said X-direction electrodes and said Y-direction electrodes. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification