Abstract: Firstly, the architecture of wireless sensor network and the application of wireless sensor network in medical treatment are introduced. Then the architecture of wireless sensor network medical monitoring system and the design of monitoring node are expounded. Finally, the application of wireless sensor network to medical monitoring is described. The challenges that exist.
0 Preface
Wireless Sensor Network (Wireless Sensor Network) is an emerging technology that integrates sensor technology, embedded computing technology, modern network and wireless communication technology, and distributed information processing technology. It has a wide range of application scenarios.
With the development of technology, WSN (Wireless Sensor Network) will have a profound impact on many aspects of medical practice. This paper mainly describes the architecture of wireless sensor network medical monitoring system and the general principles of monitoring node design.
1 Architecture of wireless sensor networks
A typical wireless sensor network structure is shown in Figure 1. A large number of sensor nodes are arranged in the monitoring area, the nodes are organized in a self-organizing manner, and data is forwarded by using wireless communication technology. Each node has the dual functions of data collection and data fusion and forwarding. The node performs preliminary data processing and information fusion on the information collected by itself and the information forwarded to it by other nodes, and then transmits it to the base station by means of relay transmission by the adjacent node, and then transmits the data to the end user through the base station by means of the Internet, satellite, or the like.
Nodes are the basic functional units of wireless sensor networks. The specific applications are different, and the design of nodes is not the same. The basic components of the sensor node are: sensing unit, processing unit, communication unit and power supply. The structure of the node is shown in Figure 2. In addition, functional units such as positioning systems, mobile systems, and power supply self-powered systems can be added depending on the specific application requirements.
2 Wireless sensor network in medical applications
Wireless sensor networks use their own advantages (such as low cost, simple, fast, real-time non-invasive collection of various physiological parameters of patients, etc.), making them available in medical research, hospital/ICU wards, or daily household monitoring. Great development potential is a hot topic in the current research field.
A micro sensor node for detecting human parameters is placed on the patient, and the physiological parameters such as heart rate, blood pressure, electrocardiogram, heart sound and the like can be remotely monitored in real time, and the information is collectively transmitted to the monitoring center for timely processing and feedback; WSN collects the human physiological data of the observed person for a long time, which is helpful for understanding the health of the human body and studying human diseases. In addition, it has its own unique applications in drug management and the development of new drugs, blood management and many other aspects. In summary, wireless sensor networks provide a simpler, lower-cost implementation of future telemedicine monitoring systems.
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