Method and means for measuring distance of a moving object from

Details Method and means for measuring distance of a moving object from Method and means for measuring distance of a moving object from

1988-10-03

1989-09-19

Mottola, Steven

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250561, 330 59, 356372, 381 96, G01B 1100

Patent

active

048684015

ABSTRACT:
The present invention utilizes a light source mounted on a moving object and providing a light having a constant intensity. A detector circuit creates an electrical detector signal in response to receiving light from a predetermined fixed point of reference. The detector signal is then linearized by a linearization circuit which transforms the detector signal which is substantially nonlinear to a linearization signal which is substantially linear. The linearization signal can then be used in a feedback circuit for causing movement of the moving object, and can be used to precisely control the movement of the moving object.

REFERENCES:
patent: 3994589 (1976-11-01), Nodwell et al.
patent: 4207430 (1980-06-01), Harada et al.
patent: 4325638 (1982-04-01), Takeda et al.
patent: 4484069 (1984-11-01), Brenholdt
patent: 4585349 (1986-04-01), Gross et al.
patent: 4698511 (1987-10-01), Sueda et al.
patent: 4708483 (1987-11-01), Lorenz
patent: 4731744 (1988-03-01), Harrell et al.

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