A sensing device for color immediate detection of medium-distant objects on the horizon

摘要

The common examinations of distant objects colors are realized with digital post processing of picture. Therefore, resultsof examinations are delayed. Consequently, real-time measurements of medium distance objects color taking place onthe skyline have been examined. The medium distant objects that are under investigations are a different type ofskyscrapers positioned at distant from 1 km to 3 km. Examinations were performed at the same time with two types ofcolor sensors. These sensors are TCS3200 and VEML4060, they differ in dimensions, photonics characteristics and datatransmission type. Therefore, to carry out the examinations, a standalone measurement system based on Nucleo64 boardhas been programmed. The data sampling ratio was 250/s. Sensors calibration was performed with the laboratory set-upconsist of the specialized light sources, monochromator, fiber optic light divider and optical power meter. Duringmedium-distant objects color examinations sensors were connected with monocular. Mentioned objects optical spectracharacteristics were referred to data obtained with spectrophotometer use. Obtained results pointed that the use of anoptoelectronic color sensor and a commonly available optical system with a fixed focal lens enables real-timemeasurements of objects’ colors located on the skyline. The VEML6040 sensor shows better agreement than TCS3200with spectrometric characteristics of distant objects.