Wireless power supply network system and time allocation method and device based on phase conjugation

Abstract

The invention belongs to the field of wireless sensor networks, and in particular relates to a wireless power supply network model and a time allocation method and device based on phase conjugation; the wireless power supply network model includes a MIMO antenna array, an energy transmitter, an information receiver and a plurality of Terminal equipment; the energy transmitter and the information receiver are placed separately, and the energy transmitter is connected to the MIMO antenna array; each terminal equipment is connected with a single antenna; The detection signal is conjugated amplified, and the conjugated amplified energy signal is returned to the terminal device, and the terminal device uses the obtained energy to send the information signal to the information receiver. The invention designs the energy transmitter and the information receiver separately, solves the "dual-far and near" problem in the wireless power supply network, and increases the coverage of user information transmission; the invention adds the phase conjugation technology, which can increase the energy transmission stage transmission efficiency.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, and in particular relates to a wireless power supply network system and a time allocation method and device based on phase conjugation. Background technique [0002] Traditional wireless sensor networks are powered by batteries and can detect sensors including seismic, electromagnetic, temperature, humidity, noise, etc., for example. However, using battery power will bring a series of hidden dangers, such as only limited usable time, inconvenient battery replacement and so on. In addition, if the replacement is not timely, the communication will be interrupted and the service quality will be affected. [0003] Based on this, the wireless power supply network with radio frequency transmission emerges as the times require. The traditional wireless power supply network combines wireless energy collection and wireless information transmission into one network, using protocols for downlink tra...

AI Technical Summary

Problems solved by technology

However, due to the rapid attenuation of radio frequency transmission signal strength with the increase of distance, terminal equipment can only obtain a small amount of energy. In addition, the traditional wireless power supply network has the problem of "dual distance and near". Devices far away from the hybrid node H-AP obtain less energy. However, it is necessary to transmit information with higher power. On the contrary, devices close to the H-AP can obtain low energy and only need to transmit information with lower power. These problems lead to limited system capacity. Therefore, how to increase system capacity and maximize system throughput Volume is a challenge for wireless power delivery networks

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