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Optical lightning current measurement system and measurement method

A measurement system and lightning current technology, applied in the direction of measuring electrical variables, measuring devices, and only measuring current, can solve the problems of coil measurement accuracy, measurement devices, susceptibility to interference, impact, safety, etc., and achieve good insulation performance and safety performance High, the effect of improving accuracy

Pending Publication Date: 2021-03-30
上海康阔光智能技术有限公司
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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 to provide an optical lightning current measurement system and measurement method, which can solve the safety problems caused by using a metal coil as an induction device in the existing lightning current measurement technology, and the nonlinear characteristics of the coil affect the measurement accuracy problems and the susceptibility of measuring devices to disturbances and shocks in areas where lightning occurs

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  • Optical lightning current measurement system and measurement method
  • Optical lightning current measurement system and measurement method
  • Optical lightning current measurement system and measurement method

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no. 1 example

[0038] Optical lightning current measurement system of the present invention, such as figure 1 shown, including:

[0039] Signal acquisition and processing device 1, which includes programmable logic device 11 (Programmable Logic Device, PLD for short), laser power control circuit 12, polarization maintaining laser 13, laser power detector 14, transimpedance amplifier circuit 15, analog-to-digital conversion circuit 16 And the output network port circuit 17, wherein the laser power control circuit 12 receives the instructions issued by the programmable logic device 11 and controls the polarization maintaining laser 13 to output stable linearly polarized laser light. The input end is connected, the output end of the transimpedance amplifier circuit 15 is connected with the input end of the analog-to-digital conversion circuit 16, the output end of the analog-to-digital conversion circuit 16 is connected with the input end of the programmable logic device 11, and the programmabl...

no. 2 example

[0063] On the basis of the first embodiment, in this embodiment, the polarization direction of the linearly polarized laser output by the polarization maintaining laser 13 of the induction device, the fast axis direction of the first optical fiber 3, the polarization direction of the polarizer 22, and the analyzer 24 The relationship between the polarization direction of , and the fast axis direction of the second optical fiber 4 is further explained.

[0064] The polarization direction of the linearly polarized laser output by the polarization maintaining laser 13 is consistent with the fast axis direction of the first optical fiber 3 .

[0065] The polarization direction of the polarizer 22 is consistent with the fast axis direction of the first optical fiber 3 .

[0066] The polarization direction of the analyzer 24 is consistent with the fast axis direction of the second optical fiber 4 and forms an included angle with the polarization direction of the polarizer 22 . Pref...

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Abstract

The invention discloses an optical lightning current measurement system including a signal acquisition and processing device which comprises a programmable logic device, a laser power control circuit,a polarization-maintaining laser, a laser power detector, a transimpedance amplification circuit, an analog-to-digital conversion circuit and an output network port circuit. The laser power control circuit receives an instruction sent by the programmable logic device and controls the polarization-maintaining laser to output stable linear polarization laser; the laser power detector, the transimpedance amplification circuit, the analog-to-digital conversion circuit, the programmable logic device and the output network port circuit are connected in sequence. The system also includes a sensing device which comprises a first collimator, a polarizer, a magneto-optical crystal, a polarization analyzer and a second collimator; a first optical fiber which is connected with the polarization-maintaining laser and the first collimator; and a second optical fiber which is connected with the second collimator and the laser power detector. The sensing device is free of metal components, good in insulativity and high in safety performance and measurement accuracy, the signal collecting and processing device can transmit a processing result to a far end, and the influences of interference, impactand the like are effectively reduced.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and specifically belongs to an optical lightning current measurement system and a measurement method, in order to solve the safety problems caused by using metal coils for lightning current measurement and the problems affecting the accuracy of lightning current measurement in the prior art. Background technique [0002] Lightning is a common natural phenomenon. The strong discharge phenomenon of high-altitude charged clouds will release huge energy in a short period of time, resulting in huge return current and electromagnetic pulse radiation. The energy released during the lightning process will cause damage to buildings or various systems in the power, petrochemical, communication, transportation, aviation, microelectronics and other industries, and even cause secondary damage. Therefore, accurate measurement of lightning is important in lightning protection. is a crucial technology. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R33/032
CPCG01R19/0092G01R33/032
Inventor 汪亮黄勇彭耐
Owner 上海康阔光智能技术有限公司