OPTO-ELECTRONIC METHODS FOR SIGNAL PROCESSING, SYSTEMS AND DEVICE FOROPTICAL SENSOR POLLING

摘要

The invention introduces opto-electronic systems, devices and methods for signal processing which distinguish the measured quantity from one or several polled optical sensors. The device includes an integrated laser module, an electronic control and processing unit, optical switching element and one or several optical receivers. The light is reflected from the optical sensor through the optical switching element back to the light receiver(s). The electronic control and processing unit supervises the wave-length of the integrated laser module by applying thermal control and at the same time by detecting the wave-length using a wave-length selective element of an integrated laser module. Regarding the method the wave-length scanning of the wave-length of the integrated laser module is performed and at the same time the data is stored in the memory of the control and processing electronic unit. The response of the optical sensor is recorded during scanning along with the saved transmitted wave-lengths for monitoring spectrum features of the polled optical sensor. There are numerous other aspects described.