The recent events regarding worldwide human health sped up research efforts and resulted in the tremendous development of new technologies and applications. The last decade proved that new technologies find a proper place in worldwide human health and wellbeing, therefore the security of data during wireless transmission in medical facilities and for medical devices has become a research area of considerable importance. To provide enhanced security using conventional visible light wireless communication, we propose in this paper a novel communication protocol based on asymmetric encryption with a private key. We base the wireless communication protocol described in this work on a data encryption method using block chipers, and we propose it for medical facilities and devices with visible light transmission technology embedded. The asymmetric encryption with a private key algorithm, as part of a transmission protocol, aim to assure the security of sensitive medical data during wireless communication.

The main purpose of this paper is to present a decentralization of the automation cabinet, made around the Mitsubishi FX3U programmable controller and describe a remote control of a number of solenoid valves based on RS485 and LiFi technology. LiFi is a novel technology that combines wireless connectivity with lighting, allowing users to enjoy connectivity and lighting in a single system. Based on the recent developments and practical implementations, this technology, due to its numerous benefits, is expected to be applied in many areas as solely wireless communication system, or as a reliable partner of the current wireless transmissions based on radio frequency.