Distance measurement apparatus

Details Distance measurement apparatus Distance measurement apparatus

1999-01-28

2000-10-17

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 508, 368118, 368120, G01C 308, G04F 800

Patent

active

06133992&

ABSTRACT:
A distance measurement apparatus for measuring distance to the target by measuring a time elapsed from the emission of pulsed light to the target until the receiving thereof. This apparatus comprising a light-emitting section, a light-receiving section, a delay circuit for delaying at least one of generation of the trigger signal with respect to a measurement start signal and the outputting of the measurement stop signal with respect to the reflected pulsed light and outputting thus delayed signal, a reference clock section, time measuring sections consisting of a start-side and stop-side fractional time signal measurement sections and a counter section, and a distance measurement section for determining, based thus measured items, the distance to the target according to the time from the emission of the pulsed light to the receiving thereof.

REFERENCES:
patent: 3541448 (1970-11-01), Nutt
patent: 4982350 (1991-01-01), Perma et al.
patent: 5148175 (1992-09-01), Woolfolk
patent: 5262837 (1993-11-01), Shyy
patent: 5504570 (1996-04-01), Akasu
patent: 5552878 (1996-09-01), Dillard
patent: 5745442 (1998-04-01), Herscher

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