Did you look forward to a world where everything is highly intelligent and interconnected? Here thousands of sensor networks are deployed in homes, offices, and factories to make better decisions, keep people safe, and be taller Automate, reduce costs, and improve everyone's overall productivity and quality of life. If your answer is yes, the good news is that this world, called the Internet of Things (IoT), is just around the corner. What exactly is the Internet of Things? Conceptually, we can understand that almost every "thing" (even other planets) on Earth will be given a unique address. This address helps to communicate and interact with everything else via the Internet. Currently, such a "thing" is defined as a device that can connect to the Internet. These devices include cell phones, smart TVs, refrigerators, coffee makers, jet engines, nuclear reactors and any other device that can be controlled by the power switch. In fact, things can be connected to the "things" goes far beyond this. As communication technologies, and wireless technologies in particular, are becoming more advanced, the "intelligence" of everything in the world has become an unstoppable trend. Although television, refrigerators and coffee machines have been around for years, in recent years they have just started to connect with the Internet. As technology continues to improve, the "things" connected to the Internet in the future will be immeasurable. According to the report, as of February 2015, the number of devices connected to the Internet is about 14.8 billion and by 2020 this figure will reach 50 billion. IoT Connected Device Growth Forecast (Image courtesy of ZDNet.com) As an emerging trend of technological development, the Internet of Things has also brought many new opportunities and challenges to the semiconductor industry. How to power these networked devices has become a problem for every solution designer. Energy harvesting and wireless power technologies can help enable small or batteryless solutions while avoiding the need for power cords. Since the number of sensor nodes is often as large as billions, the time and cost of replacing the battery can be enormous. So many wireless sensors must be able to supply their own power. Energy harvesting from the environment has become the solution of choice, or by increasing the capacity of rechargeable storage devices to extend the battery replacement interval, or even without the need to replace the battery. There are currently a wide range of energy sources available, including solar, thermal and vibrational energy, and even the use of surrounding radio frequency (RF) energy. TI's power management devices are capable of supporting a wide range of collector, memory and load technologies to capture as much energy as possible from different sources of energy. In addition, the Internet of Things also drives new semiconductor investments in low-power electronics such as wearables. Although wearables have revolutionized personal fitness, the different charging cables and connectors used in these miniature devices have also caused many inconveniences to consumers. Wireless charging technology can not only eliminate these troubles, but also improve the overall user experience, which is one of the reasons why this technology has been widely adopted. Credit Suisse predicts that in the next five years, smartphones will become "private clouds" of wearable devices, averaging at least one or two of these wearables per user. Technology research firms expect the market for wearable wireless devices to grow to $ 6 billion by 2016. The following five TI reference designs provide reference circuits to help users add small, efficient wireless power, battery charging and energy harvesting solutions to their applications. Welcome to view the details and it's time to power your IoT device! Qi (WPC) compliant wireless charger for low power wearable applications Miniature Wireless Receiver Reference Design for Low Power Wearable Applications Small wireless power transmitter for low power wearable applications Low-power wearable TX reference design Sensor Node Reference Design for IoT Design