Digital processing of pulse signal from light-to-frequency converter under dynamic condition

Eligiusz Pawlowski

doi:10.1117/12.2065028

19 August 2014 Digital processing of pulse signal from light-to-frequency converter under dynamic condition

Eligiusz Pawlowski

Proceedings Volume 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors; 929102 (2014) https://doi.org/10.1117/12.2065028
Event: 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 2014, Lodz, Poland

Abstract

Frequency of an output signal from a Light-to-Frequency Converter (LFC) is proportional to light intensity. Under dynamic conditions, instantaneous frequency values represent instantaneous values of light intensity. In order to precisely determine frequency of the pulse signal in short time it is required to measure its successive periods. But if the light intensity changes, time between successive pulses of the output signal from LFC changes too, which prevents from obtaining the results of light measurement at regular time intervals. This work presents an algorithm for digital processing of a pulse frequency signal from LFC to obtain instantaneous values of light intensity at regular time intervals. Appropriate analytical dependences and examples of measurement results are also presented. Measurement circuit was built using DAQ-Card PCI-6602 and LabVIEW package of National Instruments.

Citation Download Citation

Eligiusz Pawlowski "Digital processing of pulse signal from light-to-frequency converter under dynamic condition", Proc. SPIE 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 929102 (19 August 2014); https://doi.org/10.1117/12.2065028

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