Method for realizing power information composite transmission in laser wireless energy transmission system

A technology for wireless energy transmission and power information, applied in the field of electrical communication, can solve the problems of reducing system flexibility and being susceptible to interference, and achieve the effects of simple and convenient modulation and demodulation methods, extended communication functions, and small amount of calculation.

Active Publication Date: 2019-09-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

At present, laser power transmission systems mostly use traditional radio communication methods. This traditional method is not only susceptible to interference but also adds a batch of equipment, which increases the complexity of the system and reduces the flexibility of the system, thereby limiting the power transmission. The application of the system in some fields, for example, wirelessly charging drones on the battlefield

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  • Method for realizing power information composite transmission in laser wireless energy transmission system
  • Method for realizing power information composite transmission in laser wireless energy transmission system
  • Method for realizing power information composite transmission in laser wireless energy transmission system

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Embodiment Construction

[0023] The technical solution of the invention will be described in detail below in conjunction with the drawings.

[0024] figure 1 In the laser wireless energy transmission system shown, a semiconductor laser (Laser Diode, LD) converts electrical energy into laser light and transmits it to a remote photovoltaic receiver via free space. At the receiving end, the photovoltaic array converts the laser light into electrical energy and provides it to the load. Among them, LD is a current injection device, and the input current of different characteristics has a decisive influence on the laser light it emits.

[0025] When the transmitter modulates the signal, the binary data to be transmitted is packed once every 8 bits to construct the corresponding 18-bit signal frame. The format is: start bit 0—8 bits of information—8 bits of check—stop bit 1, of which, 8 The requirement of bit checking is to keep the number of 0 and 1 in a frame equal. Use modulator to convert signal frame into ...

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Abstract

The invention discloses a method for realizing power information composite transmission in a laser wireless energy transmission system, and belongs to the technical field of electric communication. According to the method, to-be-transmitted data is coded and modulated to obtain a binary signal frame enabling the power of a bidirectional converter to be balanced; the laser receiving end is controlled by comparing the average value of each pulse period of the photovoltaic array output current of the laser receiving end with the total average value of one signal frame; and the modulation reflex reflector arranged at the laser receiving end modulates part of the main light beam entering the receiving end into pulsed light under the control of the controllable level signal, so that modulation and emission of a signal at the receiving end are realized, and power one-way transmission and signal two-way transmission of the whole system are further realized.

Description

Technical field [0001] The invention discloses a method for realizing composite transmission of power information in a laser wireless energy transmission system, and belongs to the technical field of electrical communication. Background technique [0002] With the increasing popularity of electrical equipment, the traditional power supply mode based on contact conductivity has problems such as poor mobility, insecurity and reliability. Especially in a system where the electrical equipment and the power supply system are relatively mobile, more additional equipment is required to meet physical contact, which brings inconvenience to the application of electrical equipment. The wireless laser power transmission has the advantages of long transmission distance and good directionality, and is suitable for non-contact charging of fast-moving targets such as drones, tanks, and vehicles. [0003] figure 1 Shown is the general structure of the laser wireless energy transmission system. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/50H04B10/524H04B10/80H04B10/60H02J50/20
CPCH04B10/503H04B10/524H04B10/807H04B10/60H02J50/20
Inventor 金科杨天乙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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