Device and method for passive current detection in low-frequency mechanical vibration environment

A technology of mechanical vibration and source current, applied in the field of measurement, can solve the problems of inaccurate passive current detection, parameter disturbance, calculation model error, etc., and achieve the effect of eliminating low-frequency mechanical vibration interference, accurate model, and accurate measurement

Pending Publication Date: 2020-11-03
邵伟华
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Problems solved by technology

The existing technology has the problem of parameter disturbance caused by the interference vibration and the electromagnetic force not in the same direction, and the calculation model of the existing technology has large errors, which cannot eliminate the low-frequency mechanical vibration interference in the process of measuring the DC current of the twin-core wire, and thus cannot accurately measure the low-frequency Detection of passive current in mechanical vibration environment

Method used

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  • Device and method for passive current detection in low-frequency mechanical vibration environment
  • Device and method for passive current detection in low-frequency mechanical vibration environment
  • Device and method for passive current detection in low-frequency mechanical vibration environment

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Embodiment 1

[0038] A device for passive current detection in a low-frequency mechanical vibration environment. The dual-core wire 1 is located above the wire support end 5. The wire buckle cover 2 covers the dual-core wire and is fixedly connected to the wire support end. The wire support end is connected to the bottom plate 13 Fixed connection, the wire buckle cover is designed with a tangential fitting structure near the center of the two wires, which can clamp the wires more effectively; two cantilever beam sensor adjustment devices 14 are respectively located at the two ends of the double-core wire, and one end cantilever beam sensor The outer side of the adjusting device is connected to the packaged upper cantilever sensor 11, and the outer side of the cantilever sensor adjusting device at the other end is connected to the packaged lower cantilever sensor 12, the packaged upper cantilever sensor is located above the dual-core wire, and the packaged lower cantilever sensor is located in ...

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PUM

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Abstract

The invention discloses a device and method for passive current detection in a low-frequency mechanical vibration environment, and the device comprises a double-core wire, a wire buckling cover, an adjustment device top knob, a cantilever beam fixed end sliding block, a lead screw, a side scale line, a cantilever beam sensor adjustment device, and the like. An expression formula of vibration interference force under a piezoelectric cantilever beam spring damping model is deduced according to a completely differential model, a measuring device is designed to enable the interference vibration force and the electromagnetic force to be in the same direction, and the current value under the disturbance environment is calculated by reading the readings of piezoelectric patches in two cantileverbeam sensors. The model amplifies the voltage amplitude by two times and completely eliminates the low-frequency mechanical vibration interference in the double-core wire direct current measurement process, so that the measurement is accurate.

Description

Technical field [0001] The invention belongs to the field of measurement and relates to a high-precision, high-sensitivity piezoelectric passive current detection device and method suitable for measuring direct current in a double-core wire in an environment with low-frequency mechanical vibration. Background technique [0002] MEMS technology, as a multi-disciplinary highly intersecting frontier subject field, has developed rapidly in recent years and has been widely used in aviation, aerospace, biotechnology and other fields. This technology can achieve high-quality, high-yield and low-consumption, greatly improve the reliability and intelligent functions of the system, and has become one of the active development directions in the electronics field. With the higher requirements of this kind of people and the maturity of technology, the application field and scope of piezoelectric current sensors are becoming more and more extensive. This requires the piezoelectric current sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/20G01R1/04G01R1/18G01R1/16
CPCG01R1/0416G01R1/16G01R1/18G01R15/20
Inventor 邵伟华
Owner 邵伟华
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