Signal Transmission and Feedback Control in Wearable Devices: Review

Wearable devices have become a critical driving force in areas such as smart health management, sports tracking, smart homes, and remote healthcare, thanks to advancements in signal transmission and feedback control technologies. This paper systematically reviews the key technologies involved in signal acquisition, transmission, and feedback control in wearable devices, focusing on how closed-loop control enhances user experience and health management through real-time monitoring and dynamic adjustment. By utilizing sensor technology, wearable devices can gather various physiological signals and collaborate with smart systems to provide personalized health and environmental adjustment solutions. The paper also discusses the technical challenges related to latency, energy management, and data security in wearable devices. Additionally, it explores the potential of 5G, artificial intelligence, and next-generation communication technologies to improve device performance. The integration of feedback transmission and closed-loop control offers more intelligent and personalized solutions for future applications in health management, sports tracking, and smart living.