Optoelectronic measuring device

Details Optoelectronic measuring device Optoelectronic measuring device

1985-01-22

1987-01-20

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

324175, 73505, G01D 534

Patent

active

046381554

ABSTRACT:
An apparatus for the Optoelectronic Measuring of the rotational speed of a shaft, and in particular the rotational speed of a shaft of a turbosupercharger which is part of an internal combustion engine. This apparatus makes it possible to measure the rotational speed of such a shaft in a simple, reliable, and cost-effective manner by utilizing an amplitude modulated pencil of light which is converted into a usable electronic signal by a special electronic evaluating system. The light modulator is a component already existing on the turbosupercharger shaft, thereby further reducing complexity and cost.

REFERENCES:
patent: 4196629 (1980-04-01), Philips
Fotoelektronische Naeherungsschalter, from Lothar Schlueter KG (company brochure).
Article on Fibre Optic Sensors by M. de Mendez, J. J. Dumont, and P. Amberny, Dec. 1980, pp. 313-316, from Optic and Laser Technology.
Bosch Technical Reports, vol. 7, pp. 140-141 (1981).

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