Wireless Energy Harvesting Wireless Sensor Network Nodes

Abstract

The invention discloses a wireless energy collection type wireless sensor network node, which specifically includes: a wireless energy collection module, a charge and discharge management module, a transceiver front end, a modulation circuit and a microprocessor. The wireless sensor network node of the present invention provides energy for the microprocessor of the wireless sensor network node and its front-end transceiver circuit in the form of wireless energy collection; and implements the Miller code in the ISO / IEC18000-6C protocol with assembly language based on the microprocessor And its extended code realizes all the functions of the ISO / IEC18000-6C protocol, that is, implements RFID tags, defines the sensing command format, and provides sensing functions; it can realize long-distance communication of active tags, and wireless charging The method makes the microprocessor work continuously, overcomes the shortcomings of the short life of the active tag and the need for frequent battery replacement, can provide a reference for the layout of the wireless sensor network, can provide the possibility of rapid implementation for the research of RFID algorithms and other functions, and reduce the development cycle .

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a distributed sensor network, in particular to a wireless energy collection type wireless sensor network node. Background technique [0002] A wireless sensor network (Wireless Sensor Networks, WSN) is a distributed sensor network, and its nodes can perceive sensory information in the external environment. The wireless sensor network realizes the functions of data collection, processing and transmission. The wireless sensor network is composed of a large number of sensors, which can collect information including earthquake, electromagnetic, temperature, humidity, pressure, object size, moving direction and speed. As one of the top ten technologies in the world in the future, wireless sensor networks are attracting more and more attention, and have broad application markets in many fields such as military, medical, household, and environmental monitoring. [0003] Wireless senso...

AI Technical Summary

Problems solved by technology

However, the power supply of the active tag battery is limited, and the battery needs to be replaced frequently, which increases the maintenance cost, and due to the limitations of some special environments, it is impossible to replace the battery of some tag nodes, but the wireless sensor network requires a long enough survival time, so Battery power is the Achilles heel of wireless sensor networks

Passive tags cannot actively initiate communication, and provide few functions, and the communication distance is short, so it is difficult to meet the intensive work requirements of wireless sensor networks

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