The sensor node is a kind of micro-embedded equipment, which requires its low price and low power consumption. These restrictions will inevitably lead to weaker processor capacity and smaller memory capacity. In order to complete various tasks, sensor nodes need to complete various tasks such as collection and conversion of monitoring data, data management and processing, and response to task requests from sink nodes and node control. How to use limited computing and storage resources to accomplish many collaborative tasks has become one of the challenges in sensor network design. In the sensor node, the power module provides energy for the node and is the basic module of the entire wireless sensor node. Limited by the size of the node, the energy of the sensor node is very limited. Therefore, in the entire node design, with low power consumption and high precision as the main requirements, a series of effective measures are taken to save energy. In addition, the medical sensor node cannot replace the battery frequently, which affects the normal life of people. Therefore, the designed medical node should have a longer life cycle.
