A method for realizing energy-carrying two-way communication based on a laser wireless energy transmission system

Abstract

The invention discloses a method for realizing energy-carrying two-way communication based on a laser wireless energy transmission system, which belongs to the technical field of electrical communication. This method breaks through the traditional thinking of laser wireless energy transmission and discretizes continuous laser light into laser pulses. Since the discretized pulsed laser has more controllable variables than the analog continuous laser, it is independent of energy transmission in the pulsed laser. Variable modulation can realize the fusion of energy and information transmission in the system. In order to realize the energy-carrying two-way communication of the laser wireless energy transmission system, a method of pulse laser frequency shift keying modulation and inductor current ripple amplitude keying demodulation is firstly proposed to realize the system's unidirectional energy-carrying communication; secondly, according to the modulation Based on the retroreflection characteristics of the retroreflector, an information retrospective modulation and demodulation method based on continuous bias laser is proposed to realize the uplink of data in the system. The energy-carrying two-way communication scheme of the present invention simultaneously realizes stable energy transmission and high-speed communication.

Description

technical field [0001] The invention discloses a method for realizing energy-carrying two-way communication based on a laser wireless energy transmission system, which belongs to the technical field of electrical communication. Background technique [0002] With the increasing popularity of electronic devices such as mobile phones, tablet computers, and smart watches, the power supply problem of the equipment has gradually emerged. The traditional contact power supply has the problem of poor mobile performance. Now more and more devices have powerful hardware configuration. This also brings higher power consumption. In the case of no significant improvement in battery technology, higher and higher hardware power consumption greatly shortens battery life, which makes users need to perform one or more tests on mobile electronic devices once a day. In the case of relatively high charging frequency, the cable and distance constraints of traditional contact power supply greatly i...

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Problems solved by technology

[0007] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, and provide a method for realizing energy-carrying two-way communication based on a laser wireless energy transmission system. At the transmitting end, the laser power supply is modulated to inject the frequency of the semiconductor laser current into the frequency loading information, which is formed after modulation. The discretized main laser fuses and transmits energy and information to realize the simultaneous downlink transmission of energy and data, and detects the current ripple amplitude on the photovoltaic power supply inductor at the receiving end to demodulate the signal transmitted at the transmitting end, and the incident laser beam at the receiving end Perform secondary modulation and reverse emission transmission, realize data uplink in the system through discretized backtracking laser, realize the invention goal of stable energy transmission and high-speed communication based on the laser wireless energy transmission system, and solve the received power fluctuation caused by the traditional carrier debugging method to transmit information And the existing two-way communication scheme based on laser wireless energy transmission system cannot take into account the technical problems of stable energy transmission and high-speed communication

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