Experimental Setup of Data Transmission via Visible Light in a Temperature Control System

Abstract

The article presents a new approach to the organization of the temperature control system in the room. It is proposed to use optical wireless data transmission technology via led lighting, in order to controller actuator. The emergence of new directions based on the optical range in the field of communication was explained by existing problems in the organization of modern wireless infrastructure. Nowadays, the radio frequency band widely used for data transmission is overloaded and cannot meet the rapidly growing traffic and demand for wireless data services. Additional implementation of wireless systems based on the use of the optical range can help in solving existing problems. In this article, we consider an experimental model of an automated temperature control system. We proposed a block diagram of the indoor temperature control system using with data transmission via visible light. For the organization of traffic developed transmitting and receiving devices. A digital temperature sensor is connected to the transmitter. The transmitting device has a 3W white lightemitting diode, which performs the function of lighting and additionally transmits temperature data. A photodetector is used to receive the signal. The control and data processing is carried out by ATmega 328 microcontrollers, which are located in both devices. The actuator is a 30W heating element. Experimental results of the control system operation, which show stable data transmission and the maintenance of the specified temperature regimes in working condition for a long period of time, are presented. The level and quality of lighting during the operation of the control system remain in the normalized range.