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Wirelessly powered magnetostrictive high-frequency response characteristic measuring device

A technology of wireless power supply and magnetostriction, applied in circuit devices, battery circuit devices, electromagnetic wave systems, etc., to achieve the effects of easy overheating, convenient and flexible layout, and simple and reliable device structure

Inactive Publication Date: 2015-04-08
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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 in situations where it is not suitable to drag wires. Novel way of power transmission

Method used

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  • Wirelessly powered magnetostrictive high-frequency response characteristic measuring device
  • Wirelessly powered magnetostrictive high-frequency response characteristic measuring device
  • Wirelessly powered magnetostrictive high-frequency response characteristic measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 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.

[0028] Finally, the 5V wireless power transmission to the two sensors is realized.

Embodiment 2

[0030] 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.

[0031] Finally, 5V wireless power transmission to 4 sensors is realized.

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Abstract

The invention discloses a wireless electric energy transmission device of a distributed sensor, and relates to a wirelessly powered magnetostrictive high-frequency response characteristic measuring device. The measurement comprise the following step: forming a one-transmission and multi-reception wireless electric energy transmission system from an electric energy transmission coil and a plurality of electric energy receiving coils, wherein each sensor is provided with an electric energy receiving circuit consisting of one receiving coil; the following specific steps comprise: rectifying 220V mains supply through a rectifier bridge B1 and filtering through a filter capacitor into direct current; converting the direct current into high-frequency alternating current voltage through an inverter bridge and loading to the electric energy transmission coil to transmit electric energy; rectifying the electric energy received by the receiving oils by using a resonant mode through the rectifier bridge B1 and then stabilizing voltage by using a three-terminal voltage regulator tube to provide power for a lithium ion battery, so wireless power supply of the multiple sensors is realized. The defects of structure load and inconvenience in arrangement of the existing power supply mode are overcome, and the purpose of the tailless sensors is achieved.

Description

technical field [0001] The invention uses an electromagnetic transducer to realize the measurement of the high-frequency response characteristic of magnetostriction, and belongs to the field of electromagnetic non-destructive testing. Background technique [0002] In the non-destructive testing industry, the non-destructive detection of defects in non-contact metal materials can be realized by using electromagnetic transducers. It has a large detection range and high sensitivity, and can realize high-efficiency detection of plates or pipes without blind spots. It has become a widely used One of the most concerned non-destructive testing methods. At present, the theoretical analysis, experimental verification and engineering practice of non-ferromagnetic materials are relatively mature, and they have been maturely applied in such as aluminum profiles and stainless steel structural parts. In ferromagnetic materials, the electromagnetic transducer involves the combination of L...

Claims

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Application Information

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IPC IPC(8): H02J17/00H02J7/00G01N27/82H02J50/12H02J50/40
CPCH02J7/025G01N27/82
Inventor 金亮杨庆新张广超
Owner TIANJIN POLYTECHNIC UNIV
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