CN204203366U - A kind of lightning instantaneous three-dimensional electrical field test sensor - Google Patents
A kind of lightning instantaneous three-dimensional electrical field test sensor Download PDFInfo
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- CN204203366U CN204203366U CN201420703112.9U CN201420703112U CN204203366U CN 204203366 U CN204203366 U CN 204203366U CN 201420703112 U CN201420703112 U CN 201420703112U CN 204203366 U CN204203366 U CN 204203366U
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Abstract
The utility model discloses a kind of lightning instantaneous three-dimensional electrical field test sensor, comprise space three-dimensional antenna array and 3 voltage followers, described space three-dimensional antenna array comprises square screening can and 3 monopole antennas, the length of described monopole antenna is less than 1/10 of the electromagnetic wavelength of radiation of lightening discharge, 3 monopole antennas are vertically set on any 3 adjacent surfaces of square screening can respectively, insulation sleeve is provided with between each monopole antenna and square screening can, described 3 monopole antennas connect one to one through coaxial supply line the input end of 3 voltage followers, the output terminal outer signal analytical equipment of 3 voltage followers.The utility model adopts space three-dimensional antenna array to measure the electric field component of three-dimensional, for differentiating type, the analysis lightning current parameter of lightning strike and providing data to the extent of injury that uphole equipment causes.
Description
Technical field
The utility model belongs to thunder and lightning science and technology field, particularly a kind of lightning instantaneous three-dimensional electrical field test sensor.
Background technology
Thunder and lightning main discharge passage is once set up, and cloud layer electric charge neutralizes with the earth or cloud layer contrary sign induced charge rapidly, and return stroke current sharply rises, and by the impact of electricity, current potential and channel impedance, its climbing speed is maximum reaches 500kA/s.Now, discharge channel forms antenna eliminator, produces strong electric transient electromagnetic radiation.The electromagnetic action produced within the specific limits produces interference and destruction to the various electronic equipments in three dimensions.To microelectronic device, Yan Zehui brings more serious harm, gently then causes functions of the equipments disorderly, heavy then device is burnt.
The hazard approach of Lightning Electromagnetic Pulse is the coupling effect of transient electromagnetic field, and it can produce different interference and destruction to relevant military and civilian equipment.Therefore, the armour studying Lightning Electromagnetic Pulse is significant.At present, the prerequisite of research Lightning Electromagnetic Pulse understands the fundamental characteristics of Lightning Electromagnetic Pulse, and therefore, the time domain waveform measuring Lightning Electromagnetic Fields has very consequence.One-dimensional Vertical electric field when electrostatic field before the domestic and international measurement to thunder and lightning electric field at present mainly occurs for thunder and lightning and thunder and lightning occur.But it is also little for the research of the distribution of space three-dimensional electric field and the measuring technique of other types thunder and lightning.
Utility model content
In order to solve the technical matters that above-mentioned background technology proposes, the utility model aims to provide a kind of lightning instantaneous three-dimensional electrical field test sensor, the electric field component of three-dimensional is measured, for differentiating type, the analysis lightning current parameter of lightning strike and providing data to the extent of injury that uphole equipment causes by space three-dimensional antenna array.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of lightning instantaneous three-dimensional electrical field test sensor, comprise space three-dimensional antenna array and 3 voltage followers, described space three-dimensional antenna array comprises square screening can and 3 monopole antennas, the length of described monopole antenna is less than 1/10 of the electromagnetic wavelength of radiation of lightening discharge, 3 monopole antennas are vertically set on the outside surface of any 3 adjacent surfaces of square screening can respectively, insulation sleeve is provided with between each monopole antenna and square screening can, described 3 monopole antennas connect one to one through coaxial supply line the input end of 3 voltage followers, the output terminal outer signal analytical equipment of 3 voltage followers, described 3 monopole antennas receive the electric field component in space three-dimensional direction respectively, and following by inputting voltages device after the electric field component in three directions being converted into electric signal, voltage follower output voltage signal also gives signal analysis equipment, analyzes electric field component.
Wherein, above-mentioned voltage follower comprises voltage-controlled type integrated transporting discharging, the first feedthrough capacitor and the second feedthrough capacitor, the positive input terminal of voltage-controlled type integrated transporting discharging connects monopole antenna, the negative input end of voltage-controlled type integrated transporting discharging connects its output terminal, the positive and negative power end of voltage-controlled type integrated transporting discharging is connected to positive and negative power supply through first, second feedthrough capacitor respectively, described voltage follower is placed in the inside of square screening can, and first, second feedthrough capacitor is arranged on the inwall of square screening can.
Wherein, above-mentioned square screening can is provided with bnc interface, and the output terminal of voltage-controlled type integrated transporting discharging connects bnc interface through coaxial supply line, and is connected with signal analysis equipment by bnc interface.
Wherein, the material of above-mentioned square screening can is metallic copper.
Wherein, the material of above-mentioned monopole antenna is metallic copper.
Adopt the beneficial effect that technique scheme is brought:
(1) the utility model measures three-dimensional electric field field component by space three-dimensional antenna array, thus differentiate lightning strike type according to three-dimensional electric field component, the extent of injury analyzed lightning current parameter and uphole equipment is caused, One-dimensional Vertical electric field measurement when electrostatic field before only occurring thunder and lightning compared with prior art and thunder and lightning occur, the measurement being applicable to the electric field component of various transient field of the present utility model, is widely used;
(2) the utility model adopts voltage-controlled property integrated transporting discharging as voltage follower, and it can meet the requirement of antenna receive circuit input impedance; In addition, the utility model have that structure is simple, easy for installation, stable performance and measuring accuracy advantages of higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit diagram of voltage follower in the utility model;
Fig. 3 is the equivalent circuit diagram of monopole antenna in the utility model;
Fig. 4 is operating diagram of the present utility model.
Label declaration: 1,2,3: monopole antenna; 4: insulation sleeve; 5: voltage follower; 6: square screening can; 7:BNC interface; 8: bottom stiff end.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
Structural representation of the present utility model as shown in Figure 1, a kind of lightning instantaneous three-dimensional electrical field test sensor, comprise space three-dimensional antenna array and 3 voltage followers 5, described space three-dimensional antenna array comprises square screening can 6 and 3 monopole antennas 1, 2, 3, described square screening can 6 is as the ground end of whole sensor, the length of described monopole antenna is less than 1/10 of the electromagnetic wavelength of radiation of lightening discharge, 3 monopole antennas 1, 2, 3 are vertically set on the outside surface of any 3 adjacent surfaces of square screening can 6 respectively, be provided with insulation sleeve 4 between each monopole antenna and square screening can 6 to realize insulating, described 3 monopole antennas 1, 2, 3 input ends connecting one to one 3 voltage followers respectively through coaxial supply line, the output terminal outer signal analytical equipment of 3 voltage followers 5.
In the present embodiment, voltage follower 5 comprises voltage-controlled type integrated transporting discharging IC1, the first feedthrough capacitor C1 and the second feedthrough capacitor C2, the positive input terminal of voltage-controlled type integrated transporting discharging IC1 connects monopole antenna, the negative input end of voltage-controlled type integrated transporting discharging IC1 connects its output terminal, the positive and negative power end of voltage-controlled type integrated transporting discharging IC1 is connected to positive and negative power supply through first, second feedthrough capacitor respectively, realizes the filtering to external power source.Described voltage follower 5 is placed in the inside of square screening can 6, and first, second feedthrough capacitor is arranged on the inwall of square screening can 6 and (is equivalent to a certain pole plate ground connection of feedthrough capacitor), and its circuit structure is as Fig. 2.Shown square screening can is provided with bnc interface 7, and the output terminal of voltage follower 5 connects bnc interface 7 through coaxial supply line, and is connected with signal analysis equipment by bnc interface 7.The material of outer 6 shells of square shielding is metallic copper, and the material of monopole antenna is metallic copper.The outer bottom of square screening can 6 is provided with bottom stiff end 8, for fixing whole device.
It is utilize monopole antenna to respond to external electrical field that the utility model realizes lightning transient electric field measurement function, then carries out relevant treatment to the electric signal produced.Suppose that the diameter of monopole antenna is 2a, length is l, if monopole antenna meets the condition of electronically small antenna, namely antenna length l much smaller than radiation of lightening discharge electromagnetic wavelength 1/10, then its input impedance is equivalent to the very little capacitor of a capacitance, the size of capacitance usually in pF magnitude, and has nothing to do with frequency.When monopole antenna connects capacitive load, output voltage and external electrical field intensity proportional.The equivalent electrical circuit of monopole antenna as shown in Figure 3, the input impedance (antenna load) of antenna receive circuit is input resistance R
inwith input capacitance C
inparallel form, C
afor the equivalent capacity of monopole antenna, C
a=1/{240c [ln (2l/a)-1] }, c is the light velocity.U
afor the induced voltage of monopole antenna, U
infor the input voltage of antenna receive circuit, according to equivalent electrical circuit, U
in=C
au
a/ (C
a+ C
in), in order to meet this relation, necessarily require antenna receive circuit to have enough input resistances, therefore the utility model adopts the voltage follower that voltage-controlled property integrated transporting discharging forms, and has the advantages that input impedance is large.
As shown in Figure 4, when thunder and lightning occurs, electric field signal in the Lightning Electromagnetic Fields be coupled to is converted to electric signal by the monopole antenna of Lightning Electromagnetic Fields on three-dimensional coordinate x, y, z direction of principal axis produced, through coaxial supply line, electric signal is sent into three voltage followers and produce voltage signal, and by coaxial feeder, axial for x, y, z voltage signal is exported by bnc interface, the voltage signal of output carries out analyzing and processing through signal processing circuit to electric field component.
Above embodiment is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.
Claims (5)
1. a lightning instantaneous three-dimensional electrical field test sensor, it is characterized in that: comprise space three-dimensional antenna array and 3 voltage followers, described space three-dimensional antenna array comprises square screening can and 3 monopole antennas, the length of described monopole antenna is less than 1/10 of the electromagnetic wavelength of radiation of lightening discharge, 3 monopole antennas are vertically set on the outside surface of any 3 adjacent surfaces of square screening can respectively, insulation sleeve is provided with between each monopole antenna and square screening can, described 3 monopole antennas connect one to one through coaxial supply line the input end of 3 voltage followers, the output terminal outer signal analytical equipment of 3 voltage followers, described 3 monopole antennas receive the electric field component in space three-dimensional direction respectively, and following by inputting voltages device after the electric field component in three directions being converted into electric signal, voltage follower output voltage signal also gives signal analysis equipment, analyzes electric field component.
2. a kind of lightning instantaneous three-dimensional electrical field test sensor according to claim 1, it is characterized in that: described voltage follower comprises voltage-controlled type integrated transporting discharging, first feedthrough capacitor and the second feedthrough capacitor, the positive input terminal of voltage-controlled type integrated transporting discharging connects monopole antenna, the negative input end of voltage-controlled type integrated transporting discharging connects its output terminal, voltage-controlled type integrated transporting discharging just, negative power end is respectively through first, second feedthrough capacitor is just connected to, negative supply, described voltage follower is placed in the inside of square screening can, first, second feedthrough capacitor is arranged on the inwall of square screening can.
3. a kind of lightning instantaneous three-dimensional electrical field test sensor according to claim 2, it is characterized in that: described square screening can is provided with bnc interface, the output terminal of voltage-controlled type integrated transporting discharging connects bnc interface through coaxial supply line, and is connected with signal analysis equipment by bnc interface.
4. a kind of lightning instantaneous three-dimensional electrical field test sensor according to claim 1, is characterized in that: the material of described square screening can is metallic copper.
5. a kind of lightning instantaneous three-dimensional electrical field test sensor according to claim 1, is characterized in that: the material of described monopole antenna is metallic copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703112.9U CN204203366U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning instantaneous three-dimensional electrical field test sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703112.9U CN204203366U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning instantaneous three-dimensional electrical field test sensor |
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| Publication Number | Publication Date |
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| CN204203366U true CN204203366U (en) | 2015-03-11 |
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| CN201420703112.9U Expired - Fee Related CN204203366U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning instantaneous three-dimensional electrical field test sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375012A (en) * | 2014-11-21 | 2015-02-25 | 南京信息工程大学 | Lightning transient three-dimensional electric field testing sensor |
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2014
- 2014-11-21 CN CN201420703112.9U patent/CN204203366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375012A (en) * | 2014-11-21 | 2015-02-25 | 南京信息工程大学 | Lightning transient three-dimensional electric field testing sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170713 Address after: 214500, 9, Pisces Road, Jingjiang, Jiangsu, Taizhou Patentee after: Jiangsu Huang Heng communication equipment manufacturing Co., Ltd. Address before: Zhongshan road Wuzhong District Mudu town of Suzhou city in Jiangsu province 215101 No. 70 Wuzhong Science Park Building 2 room 2310 Patentee before: Nanjing University of Information Science and Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20201121 |