Energy supply system for multiple nodes of sensor

Abstract

The invention relates to an energy supply system for sensor multi-nodes, belonging to the technical field of wireless sensor networks. It includes a DC power supply network, a high-frequency excitation device, an energy transmission device, an energy conversion circuit and a sensor node. The energy transmission device is composed of a transmitting end and a receiving end, including four resonators with the same natural frequency, and the transmitting end includes a source coil. and the transmitting coil, the receiving end includes a receiving coil and a load coil, the four resonators of the source coil, the transmitting coil, the receiving coil and the load coil are wirelessly connected, the DC power supply network is connected to the high-frequency excitation device, and the source coil is connected to the into the main circuit of the high-frequency excitation device and connected to the power supply, and the load coil is connected to the energy conversion circuit and connected to the sensor node; the invention adopts a four-resonator energy transmission system, which solves the problem of traditional two-resonator energy transmission. Due to the limitations of the internal resistance of the power supply and the internal resistance of the load, a quality factor of a higher order of magnitude cannot be achieved.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an energy supply system for sensor multi-nodes. Background technique [0002] Wireless sensor networks (WSNs) are composed of a large number of small and low-cost sensor nodes deployed in the monitoring area. These sensor nodes integrate various modules such as information collection, data processing and wireless communication, and can form a multi-hop self-organizing network system through wireless communication, which can cooperatively perceive, collect and process the sensory objects in the monitoring area. information and send it to observers. [0003] Wireless sensor networks originated in the US Advanced Defense Research Program in the 1970s. With the development of wireless communication, microprocessor, MEMS and other technologies, wireless sensor network technology has achieved rapid development. With its large-scale, wiring-free, flexible networking a...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and deficiencies in the prior art, the present invention proposes an energy supply system for multi-nodes of sensors, which adopts a four-resonator energy transmission system, which solves the traditional two-resonator energy transmission caused by the internal resistance of the power supply and Due to the limitation of load internal resistance, it is impossible to achieve a higher order of quality factor

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