Адаптивна мікроелектронна система прийому та обробки сигналів для оптичного екологічного пвв-сенсора

Abstract

This work presents an adaptive microelectronic system for signal acquisition and processing in an optical environmental sensor based on the total internal reflection effect. A planar waveguide is used to simplify sensor design and integration. The system includes a stabilized laser source, low-noise transimpedance amplifier, and high-resolution ADC. By controlling the angle of light incidence, the penetration depth of the evanescent field and sensor sensitivity can be adjusted in real time. The output signal is digitally processed using the Beer–Lambert law to determine pollutant concentration. The proposed architecture ensures reliable, accurate, and energy-efficient environmental monitoring