The concept of Internet of Things (IoT) has brought about another technological change in human society and provided great convenience for People 0010010 #39;s Daily life. The implementation of this great concept is inseparable from the development and deployment of high-performance sensors, high-density and low-power communication technology, and the acquisition, processing and distribution of massive data. Conventional Internet of things communication mainly relies on Radio Frequency (RF) communication technology, and the limited RF bandwidth resources may become the main bottleneck that hinders the communication of high-density and high-capacity sensor network. Optical Wireless Communications (OWC) technology is a communication technology that USES light and shade of light for signal modulation and transmission. It has the advantages of rich spectrum resources, ubiquity and strong anti-interference, and is considered as the 0010010 quot;last kilometer access 0010010 quot; technology with great application prospects in Internet of things applications. However, traditional FSO transmitters, which require complex information modulation circuits and additional power supply, are not suitable for energy-constrained applications in the Internet of things.
Based on the above research background, the concept of 0010010 quot;self-powered FSO 0010010 quot; is put forward and the preliminary prototype system is realized. The system cleverly takes advantage of the high voltage output of the friction nanogenerator, which can easily light up the LED lamp, and cleverly combines the LED lamp or LED array with the friction nanogenerator to form the simplest FSO transmitter, so as to realize the detection, modulation and transmission of mechanical signals. Compared with the traditional FSO transmitter, this device can realize the simplest and direct wireless information transmission without additional power supply access and complex modulation circuit. Based on this idea, the research group realized three applications: self-powered wireless remote control, self-powered wireless touch array for pressure detection and self-powered wireless touch pad for user authentication. This is the first application of friction nanogenerators in the field of FSO. The system can realize wireless detection of mechanical signals in the environment, with low cost and high recognition rate, and has a broad application prospect in the Internet of things, smart city and smart agriculture.
