Background of human sensor network
With the concept of “prevention first†deeply rooted in people's minds, the remote collection and processing of health information is an essential means for early detection, early diagnosis and early intervention. Secondly, in order to achieve continuous monitoring without affecting people's normal physiological activities, Traditional wired networks are gradually becoming wireless; moreover, as sensing devices move toward microscale and long-term spans, innovative sensing methods and tools are essential. In view of this, the human sensor network emerged in the context of the Internet of Things, becoming the "end" of the medical Internet of Things and the ubiquitous network (Note: widely existed networks), helping to solve health and information.
What is a human sensor network?
Human sensor network: body sensor network, referred to as BSN. BSN is body-centric and integrates multidisciplinary knowledge of biosensors, medical electronics, multi-sensor analysis and data fusion, artificial intelligence, pervasive sensing, wireless communications and other innovative applications. BSN fully utilizes the advantages of wireless, network and information, and realizes the tracking and service of the whole process of health. It is one of the development directions of low cost and health. The main feature of BSN is collection and interconnection.
Figure BSN components
Who is studying BSN?
At the 2013 Shenzhen Medical Electronics Technology Conference, Mr. Wang Lei, Shenzhen Key Laboratory of Low-cost Health, Institute of Advanced Technology, Shenzhen Institute of Advanced Science and Technology introduced to us that Europe and the United States are at the forefront of BSN research.
UC Berkeley worked on BSN research earlier and designed a dedicated platform and TInyOS operating system for BSN; MIT's Media Lab, Imperial College of Technology, Aachen University of Germany and IMEC in Europe all have their own achievements in BSN research. In addition, the Institute of Advanced Technology of Shenzhen Institute of Chinese Academy of Sciences, the Chinese University of Hong Kong, and the Microelectronics Institute of Tsinghua University have conducted in-depth research on sensors and system applications related to BSN. According to Mr. Wang Lei, the Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences designed the “three low†medical chips for BSN, developed an improved BSN platform, and used the BSN platform to work on exercise energy assessment and biofeedback adjustment. In-depth exploration of BSN's new communication method "human body communication".
Research hotspots and latest trends
Focusing on the research hotspots of BSN, the industry has carried out corresponding research and industrialization work. In general, it is reflected in the following aspects:
(1) In terms of sensors, research and development of new sensing technologies such as electronic fabrics and non-contact electrodes;
(2) At the beginning of the energy harvesting, that is, using the body's own mechanical motion energy or temperature gradient to power the BSN node, etc.;
(3) Conduct research on the BSN semantic model, focusing on the use of mathematical tools such as STSOM and Bayesian networks;
(4) Develop a low-frequency, low-noise, low-power medical integrated circuit chip suitable for BSN by means of single crystal integration;
(5) In terms of wireless communication, focus on the mechanism discussion and technology development of the transmission mode using human body communication;
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