Distributed Illuminance Measurement System Based on TMS320F28335

Abstract

Illumination is one of the vital environmental parameters in industrial production and daily life. However, illuminance measurement devices in the market can usually realize single measurement. Therefore, a system of distributed illumination measurement has been developed based on digital signal processor TMS320F28335, which is composed of illumination measurement modules based on MCU, a control module based on DSP chip and a LCD display module. The control module processes the measurement data and controls multiple illumination measurement modules and LCD display modules. The illumination measurement module collects environment illumination value with the integrated circuit BH1750 of the environment light sensor; multiple illumination measurement modules send the illumination values at different places via RS-485 bus to the control module; the control module sends the processed data to the LCD display module via RS-232 interface to display the results of distributed illumination measurement. The measurement results show that the distributed illumination measurement system based on TMS320F28335 can realize the measurement of multipoint illumination in wide range and real-time display.