Design Of Wireless Sensor Network Node With Low Power

Wireless sensor network, adopting the networking way communication, application environment is compared commonly special, node energy and processing power is very limited, usually by batteries, because of the particularity of application environment, it is difficult to get the energy of the node supply, so the nodes in the low power consumption are of great significanceIn this paper, relying on the Beijing Academic Innovation Team-the independent network model of wireless sensor networks and methods of research projects, analysis and research node low-power design. The study consists of two aspects:First, consider the context of low-power hardware design from the node, in-depth analysis functional modules of the node energy consumption model, the node low-power hardware design strategies and specific programs; from the node software design low-power consumption point of view, according to the hardware features of the design of the node, low-power software design strategies and specific programs.New features and requirements for low-power wireless sensor network node, low-power energy-saving model in the analysis and research, evaluation on the basis of the node energy consumption of each functional module, select a low-power SOC (System on Chip) chip CC2530and CC2531as a core control chip design verification of the node. The study design temperature sensor nodes with extended interface based on the CC2530and CC2531-based aggregation node. Sensor node power management chip to use low power, programmable control of the operating mode of the TPS60211, you can control the power consumption of the node from the power level dynamic power management software on a hardware basis. Full speed USB interface to communicate with the management node, the sink node to protect the real-time network data transmission, while the USB interface provides power to the aggregation node. Software:low power consumption of TI’s leading Z-Stack protocol stack, and optimize the software control of all aspects of power management chip programmable control features to achieve the dynamic management of power from the power level into hibernation, and reduce node power consumption. A sink node and the Internet program. Verified by experiment, the design of the node to complete ad hoc networks, multi-jump, with low power consumption, good stability characteristics.In this paper, the node energy consumption in terms of both hardware and soft-ware, the energy loss process by analyzing the node, node data acquisition and transmission in terms of functionality to meet the requirements to achieve a rational and efficient energy-saving and performance in terms of performance.