Sensing apparatus for measuring a physical quantity

Details Sensing apparatus for measuring a physical quantity Sensing apparatus for measuring a physical quantity

1983-09-12

1986-08-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237R, H01J 516, H01J 314, H01J 4014

Patent

active

046071628

ABSTRACT:
According to the instant invention, two input light transmitting lines or paths are used which transmit the wavelength input light of the same wavelength. A detecting portion modulates the two inputs according to the physical quantity to be measured and produces separate outputs along two output transmitting paths. A processing portion processes the two outputs and calculates the physical quantity to be measured.
In the detecting portion, each of the inputs is split into two separate light signals each of which varies at a different rate due to the effects of the physical quantity. The two separated light signals follow a respective output transmitting paths. As a result, two output signals are produced along the output paths for each input light applied to the detecting portion. The processing portion calculates one intensity ratio corresponding to the ratio of the two output signals when one input light is supplied, and calculates another intensity ratio corresponding to the ratio of two output signals when the other input light is supplied. These intensity ratios are multiplied and the physical quantity is then calculated based on the resulting multiplied value.

REFERENCES:
patent: 3483389 (1969-12-01), Cronin
patent: 3598999 (1971-08-01), Hofmeister
patent: 4223216 (1980-09-01), Quick et al.
patent: 4403144 (1983-09-01), Strahan et al.
patent: 4427881 (1984-01-01), Ruell
patent: 4471219 (1984-09-01), Giallorenzi

Affiliated with

Also associated with

Rating

Sensing apparatus for measuring a physical quantity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sensing apparatus for measuring a physical quantity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensing apparatus for measuring a physical quantity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-395177