Unlock instant, AI-driven research and patent intelligence for your innovation.

Wireless energy collector and wireless energy collecting method

A wireless energy collection device technology, applied in the direction of circuit devices, electrical components, electromagnetic wave systems, etc., can solve the impedance mismatch between the rectifying antenna and the back-end circuit, the low conversion efficiency of the radio frequency signal of the rectifying antenna, and affect the efficiency of the wireless energy collection device and other issues to achieve the effect of improving efficiency

Inactive Publication Date: 2015-04-29
SHANGHAI IND U TECH RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors of the present application found that in the existing wireless energy harvesting devices, there are problems such as the impedance mismatch between the rectenna and the back-end circuit, which leads to the low conversion efficiency of the rectenna for radio frequency signals, thus affecting the entire wireless energy. The efficiency of the collection device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wireless energy collector and wireless energy collecting method
  • Wireless energy collector and wireless energy collecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 of the present application provides a wireless energy collection device. figure 1 is a schematic diagram of the composition of the wireless energy harvesting device, such as figure 1 As shown, the wireless energy collection device 100 includes a rectenna 101 , a conversion circuit 102 , a detection circuit 103 and a control circuit 104 .

[0039] Wherein, the rectenna 101 is used to convert the radio frequency signal into a first DC signal; the conversion circuit 102 is used to convert the first DC signal into a second DC signal; the detection circuit 103 detects the first DC signal, and calculates The load impedance value Ropt required when the rectenna reaches the maximum conversion efficiency; the control circuit 104 is used to adjust the equivalent input impedance of the conversion circuit to be equal to the load impedance value Ropt.

[0040] According to this embodiment, by adjusting the equivalent input impedance of the conversion circuit at the rea...

Embodiment 2

[0050] Embodiment 2 provides a wireless energy collection method, corresponding to the wireless energy collection device in Embodiment 1. figure 2 is a flow diagram of the method, such as figure 2 As shown, the method includes:

[0051] S201, converting the radio frequency signal into a first direct current signal through a rectenna;

[0052] S202. Detect the first DC signal, and calculate a load impedance value Ropt required when the rectenna reaches the maximum conversion efficiency;

[0053] S203, adjusting the equivalent input impedance of the conversion circuit to be equal to the load impedance value;

[0054] S204. Transform the first DC signal into a second DC signal by using the converting circuit.

[0055] like figure 2 As shown, the method may also include steps S205 and S206, wherein:

[0056] S205, detecting the equivalent input impedance of the conversion circuit;

[0057] S206, judging whether the detected equivalent input impedance is equal to Ropt, if ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a wireless energy collector and a wireless energy collecting method. The wireless energy collector comprises a rectifying antenna, a conversion circuit, a detection circuit and a control circuit; the rectifying antenna is used for converting radio frequency signals into first direct-current signals; the conversion circuit is used for converting the first direct-current signals into second direct-current signals; the detection circuit is used for detecting the first direct-current signals and calculating a load impedance value which the rectifying antenna requires to gain maximal conversion efficiency; the control circuit is used for adjusting equivalent input impedance of the conversion circuit to be equal to the load impedance value. The wireless energy collector has the advantages that the equivalent input impedance of the conversion circuit at the rear end of the rectifying antenna is adjusted to be equal to the load impedance value which the rectifying antenna requires to gain the maximal conversion efficiency, efficiency of the rectifying antenna is thereby maximized and the efficiency of the wireless energy collector is greatly improved.

Description

technical field [0001] The present application relates to the technical field of radio frequency circuits, and in particular to a wireless energy harvesting device and a wireless energy harvesting method. Background technique [0002] Today, when traditional energy is increasingly scarce, the development and utilization of new energy is undoubtedly a hot research topic in the scientific and industrial circles. In addition to new energy sources such as solar energy, geothermal energy, biomass energy, and nuclear energy, the environment around us is full of radio signals of different frequency bands. Obtaining and storing these energies can be used as a new energy source for human use. [0003] It should be noted that the above introduction to the technical background is only for the convenience of a clear and complete description of the technical solution of the present application, and for the convenience of understanding by those skilled in the art. It cannot be considered...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/20
Inventor 杨澄思郑晓一李秋良朱欣恩卢煜旻
Owner SHANGHAI IND U TECH RES INST