CN110058089A - A kind of probe measuring transient electromagnetic field - Google Patents
A kind of probe measuring transient electromagnetic field Download PDFInfo
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- CN110058089A CN110058089A CN201910429277.9A CN201910429277A CN110058089A CN 110058089 A CN110058089 A CN 110058089A CN 201910429277 A CN201910429277 A CN 201910429277A CN 110058089 A CN110058089 A CN 110058089A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
Abstract
This application discloses a kind of probe for measuring transient electromagnetic field, the antenna including meeting electric small-size condition, the first load, second load, wherein antenna includes that there are two the annular copper foils of symmetrical clearance for band, two gaps are separately connected the first load and the second load, and the first load is identical with the second load；Conversion module, for obtaining the current signal of the first load and the current signal of the second load；Processing module, for obtaining electric field strength information and magnetic field strength information according to the current signal of the first load and the current signal of the second load；Power module, for powering for antenna, conversion module, processing module.Antenna in the application is equivalent to the superposition of dipole antenna and magnet ring, can simultaneously inductive spacing electromagnetic field information, then by processing module to two load current signal in electric field component and magnetic-field component separate, electric field strength information and magnetic field strength information can be obtained simultaneously, it avoids repeatedly testing, improves testing efficiency.
Description
Technical field
This application involves electromagnetic radiation fields, more particularly to a kind of probe for measuring transient electromagnetic field.
Background technique
Thunder and lightning is the common phenomenon of nature weather, while being also a kind of strongest very of short duration electromagnetic radiation of energy.
Electrical equipment and communication apparatus are highly prone to electromagnetic interference under strong-electromagnetic field environment, in order to avoid electromagnetic pulse energy to electricity
Gas equipment and communication apparatus cause damages, and need to apply reasonable safeguard measure to equipment.And the premise of everything is to electromagnetism
The transient electromagnetic field that radiation generates accurately is measured, and the method for existing a variety of measurement transient electromagnetic fields is required to pass through list
Only pops one's head in measure the electric field strength information and magnetic field strength information in its place space respectively, and operation is relatively complicated, and two
Popping one's head in, it is poor that there are time of measuring, and the testing time is longer, and testing efficiency is low.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The purpose of the application be to provide it is a kind of measure transient electromagnetic field probe, can measure simultaneously electric field strength information and
Magnetic field strength information avoids repeatedly testing, improves testing efficiency.
In order to solve the above technical problems, this application provides a kind of probes for measuring transient electromagnetic field, including meet electric small
The antenna of size condition, electromagnetic field information for incuding space where it, the first load, the second load, wherein the antenna
Including band there are two the annular copper foil of symmetrical clearance, two gaps are separately connected first load and described second negative
It carries, first load is identical with second load；
The probe further include:
Conversion module, for obtaining the current signal of first load and the current signal of second load；
Processing module, for obtaining electricity according to the current signal of first load and the current signal of second load
Field intensity information and magnetic field strength information；
Power module, for powering for the antenna, the conversion module, the processing module.
Preferably, the antenna is the printed antenna drawn on a printed circuit.
Preferably, the conversion module includes:
First trsanscondutance amplifier, for obtaining the current signal of first load；
Second trsanscondutance amplifier, for obtaining the current signal of second load.
Preferably, the processing module includes:
Summation module, the current signal for current signal and second load to first load are summed
Processing, obtains the first electric quantity signal；
Difference module is sought, the current signal for current signal and second load to first load carries out asking poor
Processing, obtains the second electric quantity signal；
Conversion module, for converting magnetic field strength information for first electric quantity signal, by second electric quantity signal
It is converted into electric field strength information.
Preferably, the summation module includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance,
Capacitor, the first operational amplifier, in which:
The first end of the first resistor be used for receive it is described first load current signal, the first of the second resistance
Hold for receive it is described second load current signal, the second end of the first resistor respectively with the second resistance second
End and first operational amplifier non-inverting input terminal connection, the first end of the 3rd resistor respectively with the 4th resistance
First end and first operational amplifier inverting input terminal connection, the second end of the 3rd resistor and the capacitor
First end connection, the capacitor second end ground connection, the second end of the 4th resistance respectively with first operational amplifier
Output end and the 5th resistance first end connection, the second end of the 5th resistance is for exporting the first electricity letter
Number, the power end of first operational amplifier is connect with the power module.
Preferably, it is described ask difference module include the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance,
Second operational amplifier, in which:
The first end of 6th resistance be used for receive it is described first load current signal, the first of the 7th resistance
Hold for receive it is described second load current signal, the second end of the 6th resistance respectively with the second operational amplifier
Inverting input terminal and the 8th resistance first end connection, the second end of the 7th resistance respectively with second operation
The non-inverting input terminal of amplifier and the connection of the first end of the 9th resistance, the second end of the 9th resistance is respectively with described the
The first end connection of the second end of eight resistance, the output end of the second operational amplifier, the tenth resistance, the tenth electricity
The second end of resistance connects for exporting second electric quantity signal, the power end of the second operational amplifier and the power module
It connects.
Preferably, which further includes the optical fiber receiver-transmitter module being set between conversion module and the processing module, described
Optical fiber receiver-transmitter module includes transmission unit, optical fiber and receiving unit, in which:
The transmission unit, the current signal for current signal and second load to first load carry out
Electro-optic conversion respectively obtains the first optical signal and the second optical signal；
The optical fiber is used for transmission first optical signal and second optical signal；
The receiving unit, for carrying out photoelectric conversion to first optical signal and second optical signal, respectively
To the current signal of first load and the current signal of second load.
Preferably, the probe further include:
Data transmission module, for the electric field strength information and the magnetic field strength information to be sent to terminal, so as to
The terminal shows information corresponding with the electric field strength information and the magnetic field strength information.
Preferably, the data transmission module is wireless data transfer module.
Preferably, the terminal is Network Analyzer or the oscillograph with Fourier transformation function.
This application provides a kind of probes for measuring transient electromagnetic field, including meet electric small-size condition, for incuding it
The antenna of the electromagnetic field information in place space, the first load, the second load, wherein antenna includes that there are two symmetrical clearances for band
Annular copper foil, two gaps are separately connected the first load and the second load, and the first load is identical with the second load；The probe also wraps
It includes: conversion module, for obtaining the current signal of the first load and the current signal of the second load；Processing module is used for basis
The current signal of first load and the current signal of the second load obtain electric field strength information and magnetic field strength information；Power supply mould
Block, for powering for antenna, conversion module, processing module.In practical applications, using the scheme of the application, antenna is equivalent to
The superposition of dipole antenna and magnet ring, can inductive spacing simultaneously electromagnetic field information, it is then negative to two by processing module
Electric field component and magnetic-field component in the current signal of load are separated, and can obtain electric field strength information and magnetic field strength simultaneously
Information avoids repeatedly testing, improves testing efficiency.
Detailed description of the invention
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the probe of measurement transient electromagnetic field provided herein；
Fig. 2 is a kind of structural schematic diagram of summation module provided herein；
Fig. 3 is a kind of structural schematic diagram for seeking difference module provided herein；
Fig. 4 is a kind of waveform diagram of the collected electromagnetic field signal of oscillograph provided herein.
Specific embodiment
The core of the application be to provide it is a kind of measure transient electromagnetic field probe, can measure simultaneously electric field strength information and
Magnetic field strength information avoids repeatedly testing, improves testing efficiency.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of the probe of measurement transient electromagnetic field provided herein, packet
Include the electric small-size condition that meets, the antenna 1 of electromagnetic field information for incuding space where it, the first load 21, the second load
22, wherein antenna 1 includes band there are two the annular copper foil of symmetrical clearance, and two gaps are separately connected the first load 21 and second
Load 22, the first load 21 and the second load 22 are identical；
Specifically, electric field is measured by dipole antenna in view of measuring magnetic field generally by small loop antenna, therefore,
Antenna 1 in the application is the antenna for being surrounded by annular copper foil and being met electric small-size condition, is set on annular copper foil there are two right
Claim gap, two gaps are separately connected identical two loads (the first load 21 and the second load 22), it is to be understood that this
Antenna 1 provided by applying is equivalent to the superposition of dipole antenna and magnet ring, and therefore, which can simultaneously inductive spacing
Electromagnetic field information, to guarantee in the current signal of each load comprising electric field component and magnetic-field component.Wherein, annular copper foil
Cross section can be round, quadrangle or other shapes, determined with specific reference to actual requirement of engineering, the application does not limit herein
It is fixed.The probe further include:
Conversion module 3, for obtaining the current signal of the first load 21 and the current signal of the second load 22；
Conversion module 4, for obtaining electric field according to the current signal of the first load 21 and the current signal of the second load 22
Strength information and magnetic field strength information；
Specifically, conversion module 3 is used to obtain the current signal of the first load 21 and the current signal of the second load 22, examine
Two loads are considered in relative position, and therefore, acting on the current signal that two load, there are phase differences, if IxFor magnetic
Field component, IyFor electric field component, I1For the current signal of the first load 21, I2The current signal for loading 22 for second, then first
The current signal I of load 211Meet I1=Ix+Iy, the current signal I of the second load 222Meet I1=Ix-Iy, 21 are loaded by first
Current signal I1With the current signal I of the second load 222It is added, result can be obtained in current signal multiplied by preset ratio
Magnetic-field component Ix, by the current signal I of the first load 211With the current signal I of the second load 222Subtract each other, electric current can be obtained
Electric field component I in signaly, according to the magnetic-field component I in current signalxMagnetic field strength information can be calculated, is believed according to electric current
Electric field component I in numberyElectric field strength information can be calculated, by probe provided herein, can be tested out simultaneously
The electric field strength information and magnetic field strength information of a certain test point, avoid repeatedly testing, improve survey in external electromagnetic field
Try efficiency.
Power module 5, for powering for antenna 1, conversion module 3, conversion module 4.
Specifically, the probe of measurement transient electromagnetic field provided herein is powered using battery, the noise jamming of power supply
Extremely low, analog sampling bandwidth can be suitble to the measurement of thunder and lightning electromagnetic environment up to 500MHz or more, high sensitivity.
This application provides a kind of probes for measuring transient electromagnetic field, including meet electric small-size condition, for incuding it
The antenna of the electromagnetic field information in place space, the first load, the second load, wherein antenna includes that there are two symmetrical clearances for band
Annular copper foil, two gaps are separately connected the first load and the second load, and the first load is identical with the second load；The probe also wraps
It includes: conversion module, for obtaining the current signal of the first load and the current signal of the second load；Processing module is used for basis
The current signal of first load and the current signal of the second load obtain electric field strength information and magnetic field strength information；Power supply mould
Block, for powering for antenna, conversion module, processing module.In practical applications, using the scheme of the application, antenna is equivalent to
The superposition of dipole antenna and magnet ring, can inductive spacing simultaneously electromagnetic field information, it is then negative to two by processing module
Electric field component and magnetic-field component in the current signal of load are separated, and can obtain electric field strength information and magnetic field strength simultaneously
Information avoids repeatedly testing, improves testing efficiency.
On the basis of the above embodiments:
Embodiment as one preferred, antenna 1 are the printed antenna drawn on a printed circuit.
It is understood that form of the antenna 1 using printed circuit board, convenient for miniaturization.
Embodiment as one preferred, conversion module 3 include:
First trsanscondutance amplifier, for obtaining the current signal of the first load 21；
Second trsanscondutance amplifier, for obtaining the current signal of the second load 22.
It is understood that antenna theory, dipole antenna category balanced type antenna are pressed, and the feed line of antenna is typically all
Coaxial cable belongs to unbalanced line, if being directly connected to, the crust of coaxial cable just has high-frequency current to flow through, crust
Radial component certainly will be had by having high-frequency current to flow through, or even influence polarization direction (horizontal-doublet antenna, the vertical RF line of antenna
Outer layer has electric current, will affect the purity of horizontal polarization).Therefore it is converted it is necessary to which balancedunbalanced is added between antenna and cable
Device falls the current choke outside inflow cable shield, that is to say, that the high frequency for flowing through cable shield crust from oscillator
Current chopping.The application is balanced the conversion between transmission line and unbalanced line using trsanscondutance amplifier, can be to avoid
Using balun converted brought by volume is larger, narrow bandwidth and field coupling are bad the disadvantages of.
Embodiment as one preferred, conversion module 4 include:
Summation module, the current signal for current signal and the second load 22 to the first load 21 carry out at summation
Reason, obtains the first electric quantity signal；
Difference module is sought, the current signal for current signal and the second load 22 to the first load 21 carries out asking poor place
Reason, obtains the second electric quantity signal；
Conversion module converts electricity for the second electric quantity signal for converting magnetic field strength information for the first electric quantity signal
Field intensity information.
Wherein, the first electric quantity signal represents signal corresponding with the magnetic-field component in current signal, the second electric quantity signal generation
Table signal corresponding with the electric field component in current signal.
Embodiment as one preferred, summation module include first resistor R1, second resistance R2,3rd resistor R3, the
Four resistance R4, the 5th resistance R5, capacitor C, the first operational amplifier A1, in which:
The first end of first resistor R1 is used to receive the current signal of the first load 21, and the first end of second resistance R2 is used for
Receive second load 22 current signal, the second end of first resistor R1 respectively with the second end of second resistance R2 and the first operation
The non-inverting input terminal of amplifier A1 connects, the first end of 3rd resistor R3 respectively with the first end and the first operation of the 4th resistance R4
The inverting input terminal of amplifier A1 connects, and the second end of 3rd resistor R3 is connect with the first end of capacitor C, the second end of capacitor C
Ground connection, the second end of the 4th resistance R4 connect with the first end of the output end of the first operational amplifier A1 and the 5th resistance R5 respectively
It connects, the second end of the 5th resistance R5 is for exporting the first electric quantity signal, the power end and power module 5 of the first operational amplifier A1
Connection.
Specifically, the concrete structure schematic diagram of summation module, referring to shown in Fig. 2, V1 and V2 constitute power module 5, the first electricity
First input end IO1 of the first end of R1 as summation module is hindered, for receiving the current signal of the first load 21, second resistance
Second input terminal IO2 of the first end of R2 as summation module passes through the first fortune for receiving the current signal of the second load 22
It calculates amplifier A1 and summation process, the 5th resistance R5 is carried out to the current signal of the first load 21 and the current signal of the second load 22
Output end IO3 of the second end as summation module, for exporting the first electric quantity signal, wherein the first operational amplifier A1 is specific
The operational amplifier of model OPA847ID can be selected.
Embodiment as one preferred, seeking difference module includes the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the
Nine resistance R9, the tenth resistance R10, second operational amplifier A2, in which:
The first end of 6th resistance R6 is used to receive the current signal of the first load 21, and the first end of the 7th resistance R7 is used for
Receive the current signal of the second load 22, the second end of the 6th resistance R6 inverting input terminal with second operational amplifier A2 respectively
And the 8th resistance R8 first end connection, the second end of the 7th resistance R7 non-inverting input terminal with second operational amplifier A2 respectively
And the 9th resistance R9 first end connection, the second end of the 9th resistance R9 respectively with the second end of the 8th resistance R8, the second operation
The first end connection of the output end of amplifier A2, the tenth resistance R10, the second end of the tenth resistance R10 is for exporting the second electricity
The power end of signal, second operational amplifier A2 is connect with power module 5.
Specifically, asking the concrete structure schematic diagram of difference module referring to shown in Fig. 3, V1 and V2 constitute power module 5, the 6th electricity
The first end of R6 is hindered as the first input end IO1 for seeking difference module, for receiving the current signal of the first load 21, the 7th resistance
The first end of R7 is as the second input terminal IO2 for seeking difference module, for receiving the current signal of the second load 22, passes through the second fortune
It calculates amplifier A2 the current signal of the first load 21 and the current signal of the second load 22 are carried out asking poor processing, the tenth resistance
The second end of R10 is as the output end IO4 for seeking difference module, for exporting the second electric quantity signal, wherein second operational amplifier A2
The operational amplifier of model OPA847ID can specifically be selected.
It is understood that carrying out plus-minus budget to signal by operational amplifier, arithmetic speed is fast, high-efficient.
Certainly, the first operational amplifier A1 and second operational amplifier A2 can also select other models, be able to achieve this Shen
Scheme please, the application do not do specific restriction herein.
Embodiment as one preferred, the probe further include receiving set on the optical fiber between conversion module 3 and conversion module 4
Module is sent out, optical fiber receiver-transmitter module includes transmission unit, optical fiber and receiving unit, in which:
Transmission unit, the current signal for current signal and the second load 22 to the first load 21 carry out electric light and turn
It changes, respectively obtains the first optical signal and the second optical signal；
Optical fiber is used for transmission the first optical signal and the second optical signal；
Receiving unit respectively obtains the first load 21 for carrying out photoelectric conversion to the first optical signal and the second optical signal
Current signal and second load 22 current signal.
Specifically, the application is also provided with optical fiber receiver-transmitter module, in transmitting terminal to telecommunications to improve the efficiency of transmission of signal
Number carry out electro-optic conversion, conveyed after changing into optical signal by optical fiber, then receiving end carries out electro-optic conversion again, by optical signal reconvert
For electric signal, so that processing module 4 carries out subsequent processing.
Embodiment as one preferred, the probe further include:
Data transmission module, for electric field strength information and magnetic field strength information to be sent to terminal, so that terminal is shown
Information corresponding with electric field strength information and magnetic field strength information.
Embodiment as one preferred, data transmission module are wireless data transfer module.
Specifically, probe provided herein passes through data after obtaining electric field strength information and magnetic field strength information
Electric field strength information and magnetic field strength information are transferred to terminal by transmission module, so that terminal carries out subsequent analysis processing.
To simplify the wiring difficulty inside probe, data transmission module can specifically select wireless data transfer module, such as
Bluetooth module, Wi-Fi module etc..
Embodiment as one preferred, terminal are Network Analyzer or the oscillograph with Fourier transformation function.
Referring to shown in Fig. 4, Fig. 4 is collected magnetic field signal of oscillograph, 1. waveform is simulation lightning current waveform, waveform
2. being magnetic field signal time domain waveform, 3. waveform is electric field signal time domain waveform.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of probe for measuring transient electromagnetic field, which is characterized in that including meeting electric small-size condition, for incuding its place
The antenna of the electromagnetic field information in space, the first load, the second load, wherein the antenna includes that there are two symmetrical clearances for band
Annular copper foil, two gaps are separately connected first load and second load, first load and described the
Two loads are identical；
The probe further include:
Conversion module, for obtaining the current signal of first load and the current signal of second load；
Processing module, for obtaining electric-field strength according to the current signal of first load and the current signal of second load
Spend information and magnetic field strength information；
Power module, for powering for the antenna, the conversion module, the processing module.
2. the probe of measurement transient electromagnetic field according to claim 1, which is characterized in that the antenna is to be plotted in printing
Printed antenna on circuit board.
3. the probe of measurement transient electromagnetic field according to claim 1, which is characterized in that the conversion module includes:
First trsanscondutance amplifier, for obtaining the current signal of first load；
Second trsanscondutance amplifier, for obtaining the current signal of second load.
4. the probe of measurement transient electromagnetic field according to claim 1, which is characterized in that the processing module includes:
Summation module, the current signal for current signal and second load to first load carry out at summation
Reason, obtains the first electric quantity signal；
Difference module is sought, the current signal for current signal and second load to first load carries out asking poor place
Reason, obtains the second electric quantity signal；
Conversion module converts second electric quantity signal for converting magnetic field strength information for first electric quantity signal
For electric field strength information.
5. the probe of measurement transient electromagnetic field according to claim 4, which is characterized in that the summation module includes first
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, capacitor, the first operational amplifier, in which:
The first end of the first resistor is used to receive the current signal of first load, and the first end of the second resistance is used
In receive it is described second load current signal, the second end of the first resistor respectively with the second end of the second resistance and
The non-inverting input terminal of first operational amplifier connects, the first end of the 3rd resistor respectively with the 4th resistance the
The connection of the inverting input terminal of one end and first operational amplifier, the first of the second end of the 3rd resistor and the capacitor
End connection, the second end ground connection of the capacitor, the second end of the 4th resistance are defeated with first operational amplifier respectively
Outlet and the connection of the first end of the 5th resistance, the second end of the 5th resistance are used to export first electric quantity signal,
The power end of first operational amplifier is connect with the power module.
6. the probe of measurement transient electromagnetic field according to claim 4, which is characterized in that described that difference module is asked to include the 6th
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, second operational amplifier, in which:
The first end of 6th resistance is used to receive the current signal of first load, and the first end of the 7th resistance is used
In the current signal for receiving second load, the second end of the 6th resistance is anti-with the second operational amplifier respectively
The first end of phase input terminal and the 8th resistance connection, the second end of the 7th resistance respectively with second operation amplifier
The non-inverting input terminal of device and the connection of the first end of the 9th resistance, the second end of the 9th resistance are electric with the described 8th respectively
The first end connection of the second end of resistance, the output end of the second operational amplifier, the tenth resistance, the tenth resistance
For exporting second electric quantity signal, the power end of the second operational amplifier is connect second end with the power module.
7. the probe of transient electromagnetic field is measured described in -6 any one according to claim 1, which is characterized in that the probe also wraps
The optical fiber receiver-transmitter module being set between conversion module and the processing module is included, the optical fiber receiver-transmitter module includes transmission unit,
Optical fiber and receiving unit, in which:
The transmission unit, the current signal for current signal and second load to first load carry out electric light
Conversion, respectively obtains the first optical signal and the second optical signal；
The optical fiber is used for transmission first optical signal and second optical signal；
The receiving unit respectively obtains institute for carrying out photoelectric conversion to first optical signal and second optical signal
State the current signal of the first load and the current signal of second load.
8. the probe of measurement transient electromagnetic field according to claim 1, which is characterized in that the probe further include:
Data transmission module, for the electric field strength information and the magnetic field strength information to be sent to terminal, so as to described
Terminal shows information corresponding with the electric field strength information and the magnetic field strength information.
9. the probe of measurement transient electromagnetic field according to claim 8, which is characterized in that the data transmission module is nothing
Line data transmission module.
10. the probe of measurement transient electromagnetic field according to claim 8, which is characterized in that the terminal is network analysis
Instrument or oscillograph with Fourier transformation function.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525265A (en) * | 2020-05-22 | 2020-08-11 | 闻泰通讯股份有限公司 | Antenna tuning system, electronic equipment and antenna tuning method |
| CN114460386A (en) * | 2022-04-13 | 2022-05-10 | 山东科技大学 | Switch transient electromagnetic field synchronous measuring probe based on symmetrical double-gap loop antenna |
| CN114518533A (en) * | 2022-04-21 | 2022-05-20 | 山东科技大学 | Hybrid direct-current circuit breaker locking time measuring method based on electromagnetic field synchronous measurement |
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| CN114460386A (en) * | 2022-04-13 | 2022-05-10 | 山东科技大学 | Switch transient electromagnetic field synchronous measuring probe based on symmetrical double-gap loop antenna |
| CN114460386B (en) * | 2022-04-13 | 2022-07-01 | 山东科技大学 | Switch transient electromagnetic field synchronous measuring probe based on symmetrical double-gap loop antenna |
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