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Wireless power transmission device of distributed type sensor

A technology of wireless energy transmission and distributed sensors, which is applied in the direction of circuit devices, electrical components, electromagnetic wave systems, etc., to achieve the effects of simple and reliable device structure, convenient and flexible layout, and easy overheating

Inactive Publication Date: 2013-07-10
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: a multi-sensor power transmission device provides a simple and low-cost multi-sensor wireless power transmission method, realizes "tailless" sensors, and provides multi-sensors for occasions where it is not suitable to drag wires. Novel way of power transmission

Method used

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  • Wireless power transmission device of distributed type sensor
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  • Wireless power transmission device of distributed type sensor

Examples

Experimental program
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Effect test

Embodiment 1

[0026] When the system is working, there are two sensors, the square wave voltage output by the inverter bridge is 190V, the square wave output of the inverter bridge is continuous for 1ms, the interrupt output is 9ms, and the electric energy is output alternately. Transmitted to the power receiving coil, the distance between the power transmitting coil and the power receiving coil is 2.5m, the inductance and parasitic capacitance of the power receiving coil form the receiving system to receive power, the voltage of the single-turn coil of the receiving coil is 6.8V, 1MHz alternating current, through the rectifier bridge After rectification and 8105 three-terminal regulator voltage regulator, 5V DC is used to supply power to the lithium-ion battery.

[0027] Finally, the 5V wireless power transmission to the two sensors is realized.

Embodiment 2

[0029] Except that the number of sensors is 4, and the distance between the power transmitting coil and the power receiving coil is 1.8m, everything else is the same as that of Embodiment 1.

[0030] Finally, 5V wireless power transmission to 4 sensors is realized.

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Abstract

The invention discloses a wireless power transmission device of a distributed type sensor. The wireless power transmission device of the distributed type sensor achieves multi-sensor wireless power supply through a resonance type wireless transmission method. The resonance type wireless transmission method includes the steps that a power transmitting coil and a plurality of power receiving coils combine a wireless power transmission system which is provided with one transmission and a plurality of receptions and each sensor is provided with a power receiving circuit which is composed of a receiving coil. The resonance type wireless transmission method includes the specific steps that 220V electric supply is rectified through a rectifier bridge B1 and is filtered into a direct current through a filter capacitor, the direct current is converted into a high-frequency alternating voltage through an inverter bridge and is loaded on the power transmitting coil to transmit power, after the current received by the receiving coil in a resonance mode is rectified through the rectifier bridge B1, a three-terminal voltage-regulator tube is used for conducting voltage stabilization on the current, a lithium ion battery is provided with power, and multi-sensor wireless power supply is achieved. The wireless power transmission device of the distributed type sensor overcomes the defects of inconvenient loading and arrangement of an existing power supply mode and achieves the purpose of a tailless sensor.

Description

technical field [0001] The invention is a device for wirelessly supplying power to multiple sensors using a resonant wireless energy transfer method. Background technique [0002] In the non-destructive testing industry, for large components or structures, it is necessary to arrange multiple sensors to realize defect location or real-time monitoring. The traditional power supply method - cables and wires is very inconvenient when multi-sensors are arranged, especially for long-term detection in the field. At present, the wireless transmission of sensor detection signals has been widely used, so it is necessary to study how to supply power locally and realize "tailless" sensors. [0003] What is often used in the current technology is a solar local power supply system, in which multiple sensors are dragged by a solar power supply, which is still powered by cable connection in essence. However, it is inappropriate to configure a set of solar power for each sensor from the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/10H02J50/12
Inventor 金亮杨庆新张献李阳李劲松
Owner TIANJIN POLYTECHNIC UNIV
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