Energy supply system for multiple nodes of sensor

Abstract

The present invention relates to an energy supply system for multiple nodes of a sensor and belongs to the technical field of wireless sensor networks. The system comprises a direct-current power supply network, a high-frequency excitation device, an energy transmission device, an energy conversion circuit and a sensor node. The energy transmission device comprises a transmitting end and a receiving end, which further comprises four resonator bodies the same in natural frequency. The transmitting end comprises a source coil and a transmitting coil. The receiving end comprises a receiving coil and a load coil. The source coil, the transmitting coil, the receiving coil and the load coil, namely four resonator bodies, are in wireless connection with one another. The direct-current power supply network is connected with the high-frequency excitation device. The source coil is connected to the main circuit of the high-frequency excitation device and is connected with a power supply. The load coil is connected to the energy conversion circuit and is also connected with the sensor node. According to the invention, a four-resonator-body energy transmission system is adopted. Therefore, the problem that due to the fact that a traditional two-resonator-body energy transmission system is limited by the internal resistance of a power supply and the internal resistance of a load, a quality factor higher in order of magnitude cannot be reached can be solved.

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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