CN204694778U - A kind of electromagnetic coupled comprehensive survey device - Google Patents
A kind of electromagnetic coupled comprehensive survey device Download PDFInfo
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- CN204694778U CN204694778U CN201520295584.XU CN201520295584U CN204694778U CN 204694778 U CN204694778 U CN 204694778U CN 201520295584 U CN201520295584 U CN 201520295584U CN 204694778 U CN204694778 U CN 204694778U
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- electric field
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Abstract
The utility model relates to a kind of electromagnetic coupled comprehensive survey device, comprise: electric field change measuring instrument, magnetic field electric field change detection instrument and processor, electric field change measuring instrument comprises: induction fights back lightning at least one times, to obtain the quantity of electric charge, according to the quantity of electric charge and generation electric current, voltage is obtained according to Current calculation, by voltage transmission to processor, the variation magnetic field that lightning produces is fought back in magnetic field electric field change detection instrument induction at least one times, induced voltage is generated according to variation magnetic field, induced voltage is amplified, and transfer to processor, processor is used for generating the electric field change waveform of fighting back lightning at least one times according to voltage, the current waveform of fighting back lightning is at least one times generated according to the induced voltage after amplifying.By the technical solution of the utility model, low-frequency current field, the low frequency magnetic field that can realize lightning discharge produces carries out comprehensive survey.
Description
Technical field
The utility model relates to Lightning monitoring technical field, in particular to a kind of electromagnetic coupled comprehensive survey device.
Background technology
Lightning is the strong electric discharge phenomena of one occurred in an atmosphere, can lightning be divided into cloud to dodge and ground sudden strain of a muscle in arrival point face with regard to its passage, cloud sudden strain of a muscle usually occurs between the main positive and negative charge district of thunder cloud sudden strain of a muscle, and the cloud that also some occurrence probability is lower dodges and occurs between cloud and air and between cloud.The polarity that ground dodges the electric charge shifted earthward according to its guide is divided into normal incidence to dodge and negative ground sudden strain of a muscle.The peak point current that ground dodges is generally a few kiloampere, sometimes even more than 100 kiloamperes, its powerful momentary current and adjoint high temperature, shock wave and strong electromagnetic radiation effect can cause serious threat and infringement to people and animals, electric power and surface structures etc., cause very large harm to the lives and properties of the mankind.
Therefore, Lightning Disaster united state is classified as one of ten the most serious the Nature disasters, China is the area that Lightning Disaster frequently occurs, the 3rd that Lightning Disaster has risen to China's disaster is shown according to the data that weather bureau issues, be necessary to develop and lightning studied and the instrument of locating and tracking, the mechanism that research lightning occurs and develops, gives certain theoretical direction and technical support to lightning protection and early warning mitigation.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of device that can carry out comprehensive survey to lightning low-frequency current field, low frequency magnetic field.
For this purpose, the utility model proposes a kind of electromagnetic coupled comprehensive survey device, comprising:
Electric field change measuring instrument, magnetic field electric field change detection instrument and processor,
Described electric field change measuring instrument comprises: plate aerial and electric field detecting circuit,
Wherein, described plate aerial is arranged in environment to be measured, fights back lightning at least one times, to obtain at least one quantity of electric charge for induction, according at least one quantity of electric charge described and at least one electric current of generation, by least one current delivery described to described electric field detecting circuit;
Described electric field detecting circuit is used for obtaining at least one voltage according at least one Current calculation described, by least one voltage transmission described to described processor,
Described magnetic field electric field change detection instrument comprises: orthogonal loop aerials and magnetic field electric field detecting circuit,
Wherein, described orthogonal loop aerials is arranged in described environment to be measured, for fighting back at least one variation magnetic field that lightning produces described in responding at least one times, at least one induced voltage is generated according at least one variation magnetic field described, at least one induced voltage described is transferred to described magnetic field electric field detecting circuit
Described magnetic field electric field detecting circuit is used for amplifying at least one induced voltage described, and transfers to described processor,
Described processor is used for the electric field change waveform of fighting back lightning according to described at least one voltage generation at least one times, fights back the current waveform of lightning according at least one induced voltage after amplification described in generating at least one times.
Preferably, described electric field detecting circuit comprises:
First resistance, first end is connected to described plate aerial, and the second end is connected to the in-phase end of the first end of the second resistance, the first end of electric capacity and the first operational amplifier;
Described second resistance, the second end is connected to the output terminal of described first operational amplifier;
Described electric capacity, the second end is connected to the output terminal of described first operational amplifier;
Described first operational amplifier, output terminal connects the input end of driving circuit;
Described driving circuit, output terminal is connected to the first end of current-limiting resistance;
Described current-limiting resistance, the second end is connected to the first concentric cable.
Preferably, also comprise:
Described first concentric cable and three-way connection, described first concentric cable is connected to described processor by described three-way connection,
Wherein, the resistance of described first concentric cable is 50 Ω, and the joint that described three-way connection is corresponding with described first concentric cable is provided with the match head of 50 Ω.
Preferably, the electric charge that described plate aerial gets is capacitor charging by described first resistance, and the duration of charging is less than preset value.
Preferably, after the quantity of electric charge of described electric capacity reaches maximal value, the loop of described second resistance, electric capacity and the first operational amplifier composition is to described second conductive discharge, and discharge time is 2ms.
Preferably, described orthogonal loop aerials comprises:
Coaxial coil and magnetic core, wherein, described magnetic core is soft magnetic material, and described coaxial coil is wound in described magnetic core.
Preferably, described magnetic field electric field detecting circuit comprises:
3rd resistance, first end is connected to the first end of described coaxial coil, and the second end is connected to the second end of described coaxial coil;
Second operational amplifier, in-phase end is connected to the first end of described 3rd resistance, and end of oppisite phase is connected to the second end of described 3rd resistance;
4th resistance, first end is connected to the positive power source terminal of described second operational amplifier, and the second end is connected to the negative power end of described second operational amplifier;
5th resistance, first end is connected to the output terminal of described second operational amplifier, and the second end is connected to the in-phase end of the 3rd operational amplifier;
6th resistance, first end ground connection, the second end is connected to the end of oppisite phase of described 3rd operational amplifier;
7th resistance, first end is connected to the in-phase end of described 3rd operational amplifier, and the second end is connected to the output terminal of described 3rd operational amplifier;
Described 3rd operational amplifier, output terminal is connected to the second concentric cable and triaxial cable,
Wherein, described second concentric cable and triaxial cable are connected to described processor, the signal of described second co-axial cables transport east-west direction, the signal of described triaxial cable transmission North and South direction.
Preferably, described magnetic field electric field detecting circuit also comprises:
Hi-pass filter, first end is connected to the output terminal of described 3rd operational amplifier, and the second end is connected to described second concentric cable and described triaxial cable,
Wherein, the cutoff frequency of described Hi-pass filter is 340Hz.
Preferably, the three dB bandwidth of described orthogonal loop aerials is 3kHz to 330kHz.
Preferably, also comprise:
GPS mushroom head antenna, is connected to GPS, for the temporal information of receiving world locational system;
GPS, is connected to described processor, receives the temporal information of the GPS from described GPS mushroom head antenna,
Wherein, described electric field change measuring instrument is when the electric field in described environment to be measured being detected higher than activation threshold value, interrupting information is sent to described processor, described processor sends interrupting information to described GPS, described GPS is when receiving interrupting information, obtain the time in the temporal information of GPS, give described processor by the time feedbacking that gets, as the timestamp of described environment of electric field change to be measured.
By technique scheme, low-frequency current field, the low frequency magnetic field that can realize lightning discharge produces carries out comprehensive survey.Wherein critical piece simple structure, takes up room less, is convenient to install, and provides a kind ofly have breakthrough detection means for studying the electromagnetic radiation of lightning, discharge energy, channel current and lightning protection.
Accompanying drawing explanation
Can understanding feature and advantage of the present utility model clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:
Fig. 1 shows the structural representation of the electromagnetic coupled comprehensive survey device according to the utility model embodiment;
Fig. 2 shows the circuit diagram of the electric field change detection instrument according to the utility model embodiment;
Fig. 3 shows the circuit diagram of the magnetic field electric field change detection instrument according to the utility model embodiment;
Fig. 4 shows the three dB bandwidth schematic diagram of the orthogonal loop aerials according to the utility model embodiment.
Embodiment
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not by the restriction of following public specific embodiment.
As shown in Figure 1, according to the electromagnetic coupled comprehensive survey device of the utility model embodiment, comprising:
Electric field change measuring instrument 1, magnetic field electric field change detection instrument 2 and processor 3,
Electric field change measuring instrument 1 comprises: plate aerial 11 and electric field detecting circuit 12,
Wherein, plate aerial 11 is arranged in environment to be measured, specifically can be fixed on supporting seat central authorities by insulation rod, and is connected with electric field detecting circuit 12 by copper rod,
Lightning is fought back at least one times, to obtain at least one quantity of electric charge, according at least one quantity of electric charge and at least one electric current of generation, by least one current delivery to electric field detecting circuit 12 for induction;
Electric field detecting circuit 12 for obtaining at least one voltage according at least one Current calculation, by least one voltage transmission to processor 3,
Magnetic field electric field change detection instrument 2 comprises: orthogonal loop aerials 21 and magnetic field electric field detecting circuit 22,
Wherein, orthogonal loop aerials 21 is arranged in environment to be measured, for responding at least one variation magnetic field fought back lightning at least one times and produce, generates at least one induced voltage according at least one variation magnetic field, at least one induced voltage is transferred to magnetic field electric field detecting circuit 22
Magnetic field electric field detecting circuit 22 for amplifying at least one induced voltage, and transfers to processor 3,
Processor 3, for generating the electric field change waveform of fighting back lightning at least one times according at least one voltage, generates the current waveform of fighting back lightning at least one times according at least one induced voltage after amplifying.Multi-channel data acquisition board is provided with in processor 3, electric field detecting circuit 12 is connected with an input channel of multi-channel data acquisition board by the first concentric cable, and magnetic field electric field detecting circuit 22 is then connected with two output channels of multi-channel data acquisition board with triaxial cable by the second concentric cable.
Electromagnetic coupled comprehensive survey device can also comprise display 6 and storer 7, electric field detecting circuit 12 can be shown by display 6 and calculate at least one voltage, and fight back the electric field change waveform of lightning at least one times, and fight back the current waveform of lightning at least one times.The data obtained then can be stored, so that compare as historical data by storer 7.
By the technical scheme of the present embodiment, low-frequency current field, the low frequency magnetic field that can realize lightning discharge produces carries out comprehensive survey.Wherein critical piece simple structure, takes up room less, is convenient to install, and provides a kind ofly have breakthrough detection means for studying the electromagnetic radiation of lightning, discharge energy, channel current and lightning protection.
As shown in Figure 2, preferably, electric field detecting circuit 12 comprises:
First resistance 121, first end is connected to plate aerial 11, and the second end is connected to the in-phase end of the first end of the second resistance 122, the first end of electric capacity and the first operational amplifier;
Second resistance 122, second end is connected to the output terminal of the first operational amplifier 123;
Electric capacity 124, the second end is connected to the output terminal of the first operational amplifier 123;
First operational amplifier 123, output terminal connects the input end of driving circuit 125;
Driving circuit 125, output terminal is connected to the first end of current-limiting resistance 126;
Current-limiting resistance 126, the second end is connected to the first concentric cable.
Wherein, plate aerial 11 is exposed in environment to be measured, when there is lightning in environment to be measured, the electric field of environment to be measured can be caused to change.Because plate aerial 11 is tabular, can plate condenser be equivalent on the one hand, the area of induction lightning can be improved on the other hand.The quantity of electric charge Q=EA ε of the lightning that plate aerial 11 senses
0(wherein, CiRi<<RC), the current signal that the change of lightning produces is
output voltage V after the integrating circuit that the second resistance 122 and electric capacity 124 form
0=EA ε
0/ C, wherein E is electric field intensity, and A is antenna area, ε
0for dielectric constant of air, C is the capacitance of electric capacity 124, and Ci is input capacitance value (electric capacity namely between plate aerial and ground), and Ri is the resistance value of the first resistance 121.
Lightning return stroke current signal charges to electric capacity 124 speed through coaxial circuit and the first resistance 121, duration of charging is RiC, after signal is charged to maximal value, the discharge circuit be made up of the second resistance 122 (resistance is R), electric capacity 124 and the first operational amplifier 123 discharges to the second resistance 122, and discharge time constant is RC.
Preferably, also comprise:
First concentric cable and three-way connection, the first concentric cable is connected to processor by three-way connection,
Wherein, the resistance of the first concentric cable is 50 Ω, and the joint that three-way connection is corresponding with the first concentric cable is provided with the match head of 50 Ω.
Preferably, the electric charge that plate aerial 11 gets is charged for electric capacity 124 by the first resistance 121, and the duration of charging is less than preset value.What arranged by RiC is less, can improve the speed of the response signal of broader bandwidth more.
Preferably, after the quantity of electric charge of electric capacity 124 reaches maximal value, the loop of the second resistance 122, electric capacity 124 and the first operational amplifier 123 composition is to the second conductive discharge, and discharge time is 2ms.Because a cloud discharges over the ground and can produce one to tens counterattack, and the duration that lightning is fought back is delicate to several milliseconds from tens, chooses discharge time constant RC=2ms, can the fast electric field change waveform of Measurement accuracy lightning counterattack.
Preferably, orthogonal loop aerials 21 comprises:
Coaxial coil 211 and magnetic core 212, wherein, magnetic core 212 is soft magnetic material, coaxial coil 211 is wound in magnetic core 212, by arranging magnetic core 212 in coaxial coil 211, can improve the electromagnetic intensity of coaxial coil 211, to produce stronger signal, be convenient to subsequent analysis computing.
As shown in Figure 3, preferably, magnetic field electric field detecting circuit 22 comprises:
3rd resistance 221, first end is connected to the first end of coaxial coil 211, and the second end is connected to the second end of coaxial coil 211; Namely the 3rd resistance 221 is parallel relationship with orthogonal loop aerials 21, can play copped wave effect, by the copped wave effect of the 3rd resistance 221, while increase coaxial coil 211 responds gain, can suppress self resonance characteristics of coaxial coil 211,
Second operational amplifier 222, in-phase end is connected to the first end of the 3rd resistance 221, and end of oppisite phase is connected to the second end of the 3rd resistance 221;
4th resistance 224, first end is connected to the positive power source terminal of the second operational amplifier 222, and the second end is connected to the negative power end of the second operational amplifier 222;
5th resistance 225, first end is connected to the output terminal of the second operational amplifier 222, and the second end is connected to the in-phase end of the 3rd operational amplifier 223;
6th resistance 226, first end ground connection, the second end is connected to the end of oppisite phase of the 3rd operational amplifier 223;
7th resistance 227, first end is connected to the in-phase end of the 3rd operational amplifier 223, and the second end is connected to the output terminal of the 3rd operational amplifier 223;
3rd operational amplifier 223, output terminal is connected to the second concentric cable and triaxial cable,
Wherein, the second concentric cable and triaxial cable are connected to processor 3, the signal of the second co-axial cables transport east-west direction, and the signal of triaxial cable transmission North and South direction, the second concentric cable and triaxial cable can not cross-references.
The two ends of coaxial coil 211 expose in the environment in the B of magnetic field, and according to Faraday's electromagnetic induction law, the magnetic field of change can induce voltage V at coil two ends, and the size of voltage is relevant to the form parameter of the time rate of change in magnetic field and coil, namely
wherein, n is the number of turn of coil, and A is the area of section of coil, B is magnetic field intensity, and Φ is magnetic flux, and the ratio obtaining output voltage and magnetic field intensity after the change of frequency field is the function of changes of magnetic field frequency, i.e. V/B=nA ω, wherein ω is the angular frequency of changes of magnetic field.
Tentatively can be amplified signal by the second operational amplifier 222, obtain the frequency-response characteristic expected, i.e. bandwidth, and then again amplify through the 3rd operational amplifier 223, obtain the bandwidth amplification coefficient expected.
Preferably, magnetic field electric field detecting circuit 22 also comprises:
Hi-pass filter 228, first end is connected to the output terminal of the 3rd operational amplifier 223, and the second end is connected to the second concentric cable and triaxial cable,
Wherein, the cutoff frequency of Hi-pass filter 228 is 340Hz.In order to eliminate power frequency (50Hz) noise effect, the output of the 3rd operational amplifier 223 can through a Hi-pass filter (being such as made up of a series capacitance and a stake resistance), its design cutoff frequency is 340Hz, to carry out high-pass filtering.
As shown in Figure 4, preferably, the three dB bandwidth of orthogonal loop aerials 21 is 3kHz to 330kHz.
Usually, lightning electromagnetic signal concentrates on very low frequency (VLF) (3-30kHz) to low frequency (30-300kHz) wave band at the main energetic that earth ionospheric waveguide space medium and long distance is propagated, by the design of the three dB bandwidth of orthogonal loop aerials 21 at 3-330kHz, effectively can catch the Return stroke in cloud-ground discharge process, and fight back the current waveform of (duration is delicate to several milliseconds from tens) for remote sensing lightning.In addition, the magnetic signal of this wave band also can reflect cloud dodge in the step propagation characteristic of positive and negative polarity leader process, and K process (to occur between Return stroke of ground flash or last fight back after and cloud dodge later stage relatively little fast electric field change) etc. discharge process
Preferably, also comprise:
GPS mushroom head antenna 4, is connected to GPS 5, for the temporal information of receiving world locational system;
GPS 5, is connected to processor 3, receives the temporal information of the GPS from GPS mushroom head antenna 4,
Wherein, electric field change measuring instrument 1 is when the electric field in environment to be measured being detected higher than activation threshold value, interrupting information is sent to processor 3, processor 3 sends interrupting information to GPS 5, GPS 5 is when receiving interrupting information, obtain the time in the temporal information of GPS, by the time feedbacking that gets to processor 3, as the timestamp that environment of electric field to be measured changes.Thus atmospheric electric field change in statistical environment easily, also namely lightning fights back the moment occurred, and facilitates user to carry out association and consults.
More than be described with reference to the accompanying drawings the technical solution of the utility model, considered in prior art, be difficult to convenient and detect the electromotive signal of lightning exactly.By the technical scheme of the application, low-frequency current field, the low frequency magnetic field that can realize lightning discharge produces carries out comprehensive survey.Wherein critical piece simple structure, takes up room less, is convenient to install, and provides a kind ofly have breakthrough detection means for studying the electromagnetic radiation of lightning, discharge energy, channel current and lightning protection.
In the utility model, term " first ", " second ", " the 3rd ", " the 4th ", " the 5th ", " the 6th ", " the 7th " only for describing object, and can not be interpreted as instruction or hint relative importance.Term " multiple " refers to two or more, unless otherwise clear and definite restriction.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an electromagnetic coupled comprehensive survey device, is characterized in that, comprising:
Electric field change measuring instrument, magnetic field electric field change detection instrument and processor,
Described electric field change measuring instrument comprises: plate aerial and electric field detecting circuit,
Wherein, described plate aerial is arranged in environment to be measured, fights back lightning at least one times, to obtain at least one quantity of electric charge for induction, according at least one quantity of electric charge described and at least one electric current of generation, by least one current delivery described to described electric field detecting circuit;
Described electric field detecting circuit is used for obtaining at least one voltage according at least one Current calculation described, by least one voltage transmission described to described processor,
Described magnetic field electric field change detection instrument comprises: orthogonal loop aerials and magnetic field electric field detecting circuit,
Wherein, described orthogonal loop aerials is arranged in described environment to be measured, for fighting back at least one variation magnetic field that lightning produces described in responding at least one times, at least one induced voltage is generated according at least one variation magnetic field described, at least one induced voltage described is transferred to described magnetic field electric field detecting circuit
Described magnetic field electric field detecting circuit is used for amplifying at least one induced voltage described, and transfers to described processor,
Described processor is used for the electric field change waveform of fighting back lightning according to described at least one voltage generation at least one times, fights back the current waveform of lightning according at least one induced voltage after amplification described in generating at least one times.
2. electromagnetic coupled comprehensive survey device according to claim 1, is characterized in that, described electric field detecting circuit comprises:
First resistance, first end is connected to described plate aerial, and the second end is connected to the in-phase end of the first end of the second resistance, the first end of electric capacity and the first operational amplifier;
Described second resistance, the second end is connected to the output terminal of described first operational amplifier;
Described electric capacity, the second end is connected to the output terminal of described first operational amplifier;
Described first operational amplifier, output terminal connects the input end of driving circuit;
Described driving circuit, output terminal is connected to the first end of current-limiting resistance;
Described current-limiting resistance, the second end is connected to the first concentric cable.
3. electromagnetic coupled comprehensive survey device according to claim 2, is characterized in that, also comprise:
Described first concentric cable and three-way connection, described first concentric cable is connected to described processor by described three-way connection,
Wherein, the resistance of described first concentric cable is 50 Ω, and the joint that described three-way connection is corresponding with described first concentric cable is provided with the match head of 50 Ω.
4. electromagnetic coupled comprehensive survey device according to claim 2, is characterized in that,
The electric charge that described plate aerial gets is capacitor charging by described first resistance, and the duration of charging is less than preset value.
5. electromagnetic coupled comprehensive survey device according to claim 4, is characterized in that,
After the quantity of electric charge of described electric capacity reaches maximal value, the loop of described second resistance, electric capacity and the first operational amplifier composition is to described second conductive discharge, and discharge time is 2ms.
6. electromagnetic coupled comprehensive survey device according to claim 1, it is characterized in that, described orthogonal loop aerials comprises:
Coaxial coil and magnetic core, wherein, described magnetic core is soft magnetic material, and described coaxial coil is wound in described magnetic core.
7. electromagnetic coupled comprehensive survey device according to claim 6, is characterized in that, described magnetic field electric field detecting circuit comprises:
3rd resistance, first end is connected to the first end of described coaxial coil, and the second end is connected to the second end of described coaxial coil;
Second operational amplifier, in-phase end is connected to the first end of described 3rd resistance, and end of oppisite phase is connected to the second end of described 3rd resistance;
4th resistance, first end is connected to the positive power source terminal of described second operational amplifier, and the second end is connected to the negative power end of described second operational amplifier;
5th resistance, first end is connected to the output terminal of described second operational amplifier, and the second end is connected to the in-phase end of the 3rd operational amplifier;
6th resistance, first end ground connection, the second end is connected to the end of oppisite phase of described 3rd operational amplifier;
7th resistance, first end is connected to the in-phase end of described 3rd operational amplifier, and the second end is connected to the output terminal of described 3rd operational amplifier;
Described 3rd operational amplifier, output terminal is connected to the second concentric cable and triaxial cable,
Wherein, described second concentric cable and triaxial cable are connected to described processor, the signal of described second co-axial cables transport east-west direction, the signal of described triaxial cable transmission North and South direction.
8. electromagnetic coupled comprehensive survey device according to claim 7, is characterized in that, described magnetic field electric field detecting circuit also comprises:
Hi-pass filter, first end is connected to the output terminal of described 3rd operational amplifier, and the second end is connected to described second concentric cable and described triaxial cable,
Wherein, the cutoff frequency of described Hi-pass filter is 340Hz.
9. electromagnetic coupled comprehensive survey device according to claim 6, is characterized in that, the three dB bandwidth of described orthogonal loop aerials is 3kHz to 330kHz.
10. electromagnetic coupled comprehensive survey device according to any one of claim 1 to 9, is characterized in that, also comprise:
GPS mushroom head antenna, is connected to GPS, for the temporal information of receiving world locational system;
GPS, is connected to described processor, receives the temporal information of the GPS from described GPS mushroom head antenna,
Wherein, described electric field change measuring instrument is when the electric field in described environment to be measured being detected higher than activation threshold value, interrupting information is sent to described processor, described processor sends interrupting information to described GPS, described GPS is when receiving interrupting information, obtain the time in the temporal information of GPS, give described processor by the time feedbacking that gets, as the timestamp of described environment of electric field change to be measured.
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| CN201520295584.XU CN204694778U (en) | 2015-05-08 | 2015-05-08 | A kind of electromagnetic coupled comprehensive survey device |
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| CN201520295584.XU CN204694778U (en) | 2015-05-08 | 2015-05-08 | A kind of electromagnetic coupled comprehensive survey device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914320A (en) * | 2015-05-08 | 2015-09-16 | 中国科学院大气物理研究所 | Electromagnetic coupling comprehensive detection device |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
-
2015
- 2015-05-08 CN CN201520295584.XU patent/CN204694778U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914320A (en) * | 2015-05-08 | 2015-09-16 | 中国科学院大气物理研究所 | Electromagnetic coupling comprehensive detection device |
| CN104914320B (en) * | 2015-05-08 | 2018-06-19 | 中国科学院大气物理研究所 | A kind of electromagnetic coupling comprehensive survey device |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
| CN106443206B (en) * | 2016-10-24 | 2023-10-20 | 广州供电局有限公司 | Method and device for measuring electric field intensity on surface of high-voltage wire |
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