CN201222079Y - Apparatus for remotely measuring thunderbolt current - Google Patents

Apparatus for remotely measuring thunderbolt current Download PDF

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Publication number
CN201222079Y
CN201222079Y CNU2008200795263U CN200820079526U CN201222079Y CN 201222079 Y CN201222079 Y CN 201222079Y CN U2008200795263 U CNU2008200795263 U CN U2008200795263U CN 200820079526 U CN200820079526 U CN 200820079526U CN 201222079 Y CN201222079 Y CN 201222079Y
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CN
China
Prior art keywords
lightning
thunder
light signal
current
return stroke
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Expired - Fee Related
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CNU2008200795263U
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Chinese (zh)
Inventor
王道洪
吕伟涛
张义军
孟青
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Chinese Academy of Meteorological Sciences CAMS
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Chinese Academy of Meteorological Sciences CAMS
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Priority to CNU2008200795263U priority Critical patent/CN201222079Y/en
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Abstract

The utility model discloses a device for remotely measuring lightning currents, which comprises an optical signal measuring device, a thunder measuring device, an electromagnetic radiation field measuring device, a lightning three-dimensional passage, a thunderbolt point distance device, a lightning return stroke speed device, a near-ground lightning optical signal device, a lightning return stroke current peak device and a lightning current device, wherein the optical signal measuring device is used to measure optical signals sent by a lightning near-ground passage in different heights, the thunder measuring device is used to measure acoustic signals sent by lightning, and the electromagnetic radiation field measuring device is used to measure electromagnetic radiation fields generated by lightning. The device for remotely measuring lightning currents not only can measure the waveform of return stroke currents, but also can measure the waveform of M-component and continuous current, and can be widely applied to power departments, communication departments, railway traffic departments and lightning protection companies from place to place.

Description

The device of remote measurement lightning current
Technical field
The utility model relates to the lightning parameter fields of measurement, particularly a kind of device of remote measurement lightning current.
Background technology
In various lightning Protection Design, lightning current parameter one of the parameter that is absolutely necessary.In order to optimize the thunder and lightning lightning-protection system, at each area, even some special buildings, the relatively more real lightning current parameter of a cover all should be arranged.But the lightning current parameter of China is to continue to use external data basically, can not reflect the regional characteristic of China.And external lightning current parameter also mainly is to obtain by the thunder and lightning that measurement is got on the higher iron tower.The thunder of getting on the higher iron tower generally is up thunder, lacks the counterattack first that is comprised in the thunder and lightning of getting on the buildings in general (such as sending electric iron tower or various building).The authenticity of just external lightning current parameter itself neither be very high.Also have some thunder and lightning locating devices can survey Fields of Lightning Return Stroke current peak and rate of change recently, but error is very big.And a thunder and lightning also has M-component and continuous current except fighting back, and can not measure for the existing thunder and lightning locating device of these compositions.
Summary of the invention
Therefore, task of the present utility model provides a kind of device that can the remote measurement lightning current.
Another task of the present utility model provides a kind of light signal measurement mechanism.
On the one hand, the device of a kind of remote measurement lightning current provided by the invention is characterized in that, comprising:
Thunder and lightning light signal measurement mechanism is used to measure the light signal that is sent under the thunder and lightning passage differing heights near the ground;
The thunder measurement mechanism is used to measure the acoustical signal that thunder and lightning sends;
The electromagnetic radiation field measurement device is used to measure the electromagnetic radiation field that thunder and lightning produces; And
Thunder and lightning three-dimensional channel and thunderbolt point distance means are electrically connected with described thunder and lightning light signal measurement mechanism and thunder measurement mechanism respectively, are used for calculating thunder and lightning three-dimensional channel and thunderbolt point distance according to the acoustical signal and the light signal of described thunder and lightning;
The Fields of Lightning Return Stroke speed device is electrically connected with described thunder and lightning light signal measurement mechanism and described thunder and lightning three-dimensional channel and thunderbolt point distance means respectively, is used for according to described thunder and lightning light signal, described thunder and lightning three-dimensional channel and thunderbolt point distance calculation Fields of Lightning Return Stroke speed;
Near-earth thunder and lightning optical signal device is electrically connected with described thunder and lightning light signal measurement mechanism, is used for obtaining the thunder and lightning light signal on close ground according to described thunder and lightning light signal;
Fields of Lightning Return Stroke current peak device, be electrically connected with described thunder and lightning three-dimensional channel and thunderbolt point distance means, Fields of Lightning Return Stroke speed device and electromagnetic radiation field measurement device respectively, the electromagnetic radiation field signal, Fields of Lightning Return Stroke speed, thunder and lightning three-dimensional channel and the thunderbolt point distance that are used for according to described thunder and lightning are obtained the counterattack current peak;
The lightning current device is electrically connected with described near-earth thunder and lightning optical signal device and Fields of Lightning Return Stroke current peak device respectively, is used for according to described thunder and lightning light signal on close ground and the waveform that described counterattack current peak obtains lightning current.
In the said apparatus, described counterattack current peak preferably continue after fight back current peak.
In the said apparatus, described light signal measurement mechanism preferred light signal pattern deriving means.
In the said apparatus, described thunder measurement mechanism also preferably includes microphone array.
Further, the preferred solid array of described microphone array.
Further, arbitrary microphone is preferably greater than 1 meter apart from the height on ground in the described microphone array.
Further, the distance of adjacent microphone is preferably 1 meter in the described microphone array.
Further, described thunder and lightning light signal measurement mechanism, comprise the camera lens that is used for imaging, a plurality of photodiode and multifiber, described optical fiber comprises input end and output terminal, the input end of described optical fiber is formed fiber array and is arranged at described camera lens and locates as the plane, and described photodiode is arranged on the output terminal of described optical fiber.
In the said apparatus, preferably each photodiode receives the output of multifiber.
Apparatus of the present invention not only can be measured the counterattack current waveform, go back the waveform of energy measurement M-component and continuous current, can be widely used in power department, Office of the Telecommunications Authority, railway traffic department, and various places lightning protection company.
Description of drawings
Below, describe the embodiment of utility model in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is a remote measurement lightning current schematic representation of apparatus;
The light signal measurement mechanism structural drawing that Fig. 2 a is sent for a kind of thunder and lightning passage differing heights near the ground among the embodiment, Fig. 2 b is the array structure synoptic diagram that optic fibre input end is lined up;
Fig. 3 is the microphone array figure of thunder three-dimensional localization embodiment;
Fig. 4 is the apparatus structure synoptic diagram of remote measurement lightning current.
Embodiment
Fig. 1 is the embodiment of a remote measurement lightning current device.Remote measurement lightning current device among this embodiment comprises,
The lightning current device is used for according to described thunder and lightning light signal on close ground and the waveform that described counterattack current peak obtains lightning current.Thunder and lightning light signal measurement mechanism 1 is used to measure the light signal that is sent under the thunder and lightning passage differing heights near the ground, wherein, and as shown in Figure 4;
Thunder measurement mechanism 7 is used to measure the acoustical signal that thunder and lightning sends;
Electromagnetic radiation field measurement device 4 is used to measure the electromagnetic radiation field that thunder and lightning produces;
Thunder and lightning three-dimensional channel and thunderbolt point distance means are electrically connected with described thunder and lightning light signal measurement mechanism and thunder measurement mechanism respectively, are used for calculating thunder and lightning three-dimensional channel and thunderbolt point distance according to the acoustical signal and the light signal of described thunder and lightning;
The Fields of Lightning Return Stroke speed device is electrically connected with described thunder and lightning light signal measurement mechanism and described thunder and lightning three-dimensional channel and thunderbolt point distance means respectively, is used for according to described thunder and lightning light signal, described thunder and lightning three-dimensional channel and thunderbolt point distance calculation Fields of Lightning Return Stroke speed;
Near-earth thunder and lightning optical signal device is electrically connected with described thunder and lightning light signal measurement mechanism, is used for obtaining the thunder and lightning light signal on close ground according to described thunder and lightning light signal;
Fields of Lightning Return Stroke current peak device, be electrically connected with described thunder and lightning three-dimensional channel and thunderbolt point distance means, Fields of Lightning Return Stroke speed device and electromagnetic radiation field measurement device respectively, the electromagnetic radiation field signal, Fields of Lightning Return Stroke speed, thunder and lightning three-dimensional channel and the thunderbolt point distance that are used for according to described thunder and lightning are obtained the counterattack current peak;
The lightning current device is electrically connected with described near-earth thunder and lightning optical signal device and Fields of Lightning Return Stroke current peak device respectively, is used for according to described thunder and lightning light signal on close ground and the waveform that described counterattack current peak obtains lightning current.
In the present embodiment, thunder and lightning three-dimensional channel and thunderbolt point distance means, Fields of Lightning Return Stroke speed device, near-earth thunder and lightning optical signal device, Fields of Lightning Return Stroke current peak device and lightning current device are all taken on by computing machine 11, and its function realizes by software.Handle in order to improve signal intensity and to be convenient to follow-up data, also used signal amplifier that the signal that collects is amplified respectively, and use the A/D plate to convert amplified analog signal to digital signal, as shown in Figure 1, thunder and lightning light signal measurement mechanism 1 is sequentially with first signal amplifier 2 and an A/D plate 3 to the circuit between the described computing machine 11, after the analog to digital conversion of the signal that thunder and lightning light signal measurement mechanism 1 measures through the amplification of first signal amplifier 2 and an A/D plate 3, handle by computing machine 11 again; Thunder measurement mechanism 7 is sequentially with the 3rd signal amplifier 8 and an A/D plate 9 to the circuit between the described computing machine 11, after the analog to digital conversion of the signal that thunder measurement mechanism 7 measures through the amplification of the 3rd signal amplifier 8 and an A/D plate 9, handle by computing machine 11 again; Electromagnetic radiation field measurement device 4 is sequentially with a secondary signal amplifier 5 and an A/D plate 6 to the circuit between the described computing machine 11, after the amplification of the signal process secondary signal amplifier 5 that electromagnetic radiation field measurement device 4 measures and the analog to digital conversion of the 2nd A/D plate 6, handle by computing machine 11 again.
Wherein, the structure of thunder and lightning light signal measurement mechanism 1 adopts a kind of light signal measurement mechanism shown in Fig. 2 a and Fig. 2 b, Fig. 2 a is the synoptic diagram of this light signal measurement mechanism, this device comprises camera, a plurality of photodiodes 15 and multifiber 13, described optical fiber 13 comprises input end and output terminal, the input end of optical fiber 13 is arranged in planar array, shown in Fig. 2 b, and be arranged on the picture plane behind the camera lens 12, the image that is become by camera lens 12 is by the array collection of optical fiber 13 input ends, the output terminal of each optical fiber is coupled respectively and imports photodiode 15 in the array, because the thunder and lightning shape that needs to measure in the present embodiment mainly is a wire, for the consideration on the cost, the output terminal of each row optical fiber of the fiber array in the thunder and lightning light signal measurement mechanism 1 of present embodiment all is coupled in the photodiode.The response time of the thunder and lightning light signal measurement mechanism of Fig. 2 can accomplish less than 10 nanoseconds, and the rise time of once fighting back in the general lightning is that 50 nanoseconds are between several microseconds, so the measurement mechanism of present embodiment can satisfy the demand on the speed fully, capture the moment of lightning.In addition, be preferably greater than 20MHz corresponding to hyperchannel first signal amplifier 2 bandwidth of thunder and lightning light signal measurement mechanism, the sampling rate of an A/D plate 3 is preferably greater than 60MHz.
The stereo microphone array that Figure 3 shows that in the present embodiment to be adopted is made up of 4 microphones as the thunder measurement mechanism, forms equilateral triangles for wherein three, and another one is arranged on the top of a drift angle of this equilateral triangle.Each microphone distance each other is preferably 1 meter in this array, and all microphones should be greater than 1 meter apart from the height on ground.The bandwidth of hyperchannel the 3rd signal amplifier 8 of microphone array correspondence is preferably greater than 20kHz, and the sampling rate of the 3rd A/D plate 9 is preferably greater than 40kHz.
Described electromagnetic radiation field measurement device can use common radiation of lightening discharge emf probe, this knows those skilled in the art, hyperchannel secondary signal amplifier 5 bandwidth corresponding to the electromagnetic radiation field measurement device are preferably greater than 5MHz, and the sampling rate of the 2nd A/D plate 6 is preferably greater than 5MHz.
Preferably, also the output signal of gps antenna 10 is directly connected to computing machine 11 in the present embodiment, is used for guaranteeing universal time.
The remote measurement lightning current measurement mechanism of present embodiment adopts the fully automatic working mode.Trigger entire measuring device with described thunder and lightning light signal.For each thunder and lightning that will write down, length writing time of its light signal and ELECTROMAGNETIC RADIATION SIGNATURE preferably reached about one second.Length writing time of its voice signal is preferably greater than 20 seconds.After having write down all signals, beginning is carried out various processing according to flow process as described below.
At first, thunder and lightning three-dimensional channel and thunderbolt point distance means three-dimensional channel and the thunderbolt point distance of determining thunder and lightning according to the thunder and lightning light signal that measures and thunder signal;
Afterwards, the Fields of Lightning Return Stroke speed device is found out the mistiming between them according to the light signal of different parts in the thunder and lightning three-dimensional channel, calculates Fields of Lightning Return Stroke speed;
Then, the thunder and lightning electromagnetic radiation field signal that measures of Fields of Lightning Return Stroke current peak device utilization and above-mentioned thunderbolt point distance and Fields of Lightning Return Stroke speed are calculated the Fields of Lightning Return Stroke current peak.If the thunder and lightning that is write down when carrying out this processing include continue after fight back the preferred counterattack current peak that calculates in the counterattack of back;
Afterwards, the lightning current device is according to this Fields of Lightning Return Stroke current peak, the point of light intensity maximum in the corresponding thunder and lightning light signal of this peak value, because there are specific funtcional relationship in the current signal and the thunder and lightning light signal strength of thunder and lightning, this knows those skilled in the art, so by the thunder and lightning light intensity of peak point and the data of strength of current, can determine described funtcional relationship, and, determine the time domain waveform of lightning current according to the light signal of thunder and lightning passage foot (determining according to the thunder and lightning light signal) by near-earth thunder and lightning optical signal device;
At last, computing machine is preserved this lightning current waveform, simultaneously, also shows this lightning current waveform on computer screen.
By research to the lightning current waveform, can obtain various current parameters, for example, can obtain current peak, rise time, peak width, wave rear duration etc. for fighting back electric current.Owing to can accurately obtain the lightning current waveform, present embodiment can also obtain the waveform of thunder and lightning M-component waveform and thunder and lightning continuous current except the current waveform that can measure Fields of Lightning Return Stroke, can't realize in this all existing lightning current telemetry.
It should be noted that embodiment in above each accompanying drawing at last only in order to the structure and the technical scheme of explanation the utility model remote measurement lightning current device, but unrestricted.Although the utility model is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is made amendment or is equal to replacement, the spirit and scope that do not break away from technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (9)

1. the device of a remote measurement lightning current is characterized in that, comprising:
Thunder and lightning light signal measurement mechanism is used to measure the light signal that is sent under the thunder and lightning passage differing heights near the ground;
The thunder measurement mechanism is used to measure the acoustical signal that thunder and lightning sends;
The electromagnetic radiation field measurement device is used to measure the electromagnetic radiation field that thunder and lightning produces;
Thunder and lightning three-dimensional channel and thunderbolt point distance means are electrically connected with described thunder and lightning light signal measurement mechanism and thunder measurement mechanism respectively, are used for calculating thunder and lightning three-dimensional channel and thunderbolt point distance according to the acoustical signal and the light signal of described thunder and lightning;
The Fields of Lightning Return Stroke speed device is electrically connected with described thunder and lightning light signal measurement mechanism and described thunder and lightning three-dimensional channel and thunderbolt point distance means respectively, is used for according to described thunder and lightning light signal, described thunder and lightning three-dimensional channel and thunderbolt point distance calculation Fields of Lightning Return Stroke speed;
Near-earth thunder and lightning optical signal device is electrically connected with described thunder and lightning light signal measurement mechanism, is used for obtaining the thunder and lightning light signal on close ground according to described thunder and lightning light signal;
Fields of Lightning Return Stroke current peak device, be electrically connected with described thunder and lightning three-dimensional channel and thunderbolt point distance means, Fields of Lightning Return Stroke speed device and electromagnetic radiation field measurement device respectively, the electromagnetic radiation field signal, Fields of Lightning Return Stroke speed, thunder and lightning three-dimensional channel and the thunderbolt point distance that are used for according to described thunder and lightning are obtained the counterattack current peak;
The lightning current device is electrically connected with described near-earth thunder and lightning optical signal device and Fields of Lightning Return Stroke current peak device respectively, is used for according to described thunder and lightning light signal on close ground and the waveform that described counterattack current peak obtains lightning current.
2. the device of remote measurement lightning current according to claim 1 is characterized in that, described counterattack current peak for continue after fight back current peak.
3. the device of remote measurement lightning current according to claim 1 is characterized in that, described light signal measurement mechanism is the light signal image acquiring device.
4. the device of remote measurement lightning current according to claim 1 is characterized in that, described thunder measurement mechanism comprises microphone array.
5. the device of remote measurement lightning current according to claim 4 is characterized in that, described microphone array is classified solid array as.
6. according to the device of claim 4 or 5 described remote measurement lightning currents, it is characterized in that, in the described microphone array arbitrary microphone apart from the height on ground greater than 1 meter.
7. according to the device of claim 4 or 5 described remote measurement lightning currents, it is characterized in that the distance of adjacent microphone is 1 meter in the described microphone array.
8. the device of remote measurement lightning current according to claim 1, it is characterized in that, described thunder and lightning light signal measurement mechanism comprises the camera lens that is used for imaging, a plurality of photodiode and multifiber, described optical fiber comprises input end and output terminal, the input end of described optical fiber is formed fiber array and is arranged at described camera lens and locates as the plane, and described photodiode is arranged on the output terminal of described optical fiber.
9. the device of remote measurement lightning current according to claim 8 is characterized in that, described each photodiode receives the output of multifiber.
CNU2008200795263U 2008-03-21 2008-03-21 Apparatus for remotely measuring thunderbolt current Expired - Fee Related CN201222079Y (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680939A (en) * 2012-04-06 2012-09-19 国网电力科学研究院武汉南瑞有限责任公司 Method and device for positioning thunder based on sound-light-electricity synchronous observation
CN103472342A (en) * 2013-09-25 2013-12-25 中国气象科学研究院 Lightning monitoring and early warning method and system
CN103558448A (en) * 2013-10-11 2014-02-05 国家电网公司 Multi-channel lightning current monitoring device for electric transmission line
CN103822707A (en) * 2014-03-17 2014-05-28 中国科学院大气物理研究所 High-speed Lightning photometer
CN103853696A (en) * 2012-11-29 2014-06-11 中国人民解放军军械工程学院 Impulse function representation method for lightning return stroke channel base current
CN104635030A (en) * 2015-02-02 2015-05-20 深圳市楚邦科技有限公司 Lightning current waveform on-line monitoring system
CN108594024A (en) * 2017-12-11 2018-09-28 海南电网有限责任公司琼海供电局 For the Lightning Warning method and apparatus of power supply area

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680939A (en) * 2012-04-06 2012-09-19 国网电力科学研究院武汉南瑞有限责任公司 Method and device for positioning thunder based on sound-light-electricity synchronous observation
CN103853696A (en) * 2012-11-29 2014-06-11 中国人民解放军军械工程学院 Impulse function representation method for lightning return stroke channel base current
CN103472342A (en) * 2013-09-25 2013-12-25 中国气象科学研究院 Lightning monitoring and early warning method and system
CN103472342B (en) * 2013-09-25 2015-11-11 中国气象科学研究院 Lightning monitoring method for early warning and system
CN103558448A (en) * 2013-10-11 2014-02-05 国家电网公司 Multi-channel lightning current monitoring device for electric transmission line
CN103558448B (en) * 2013-10-11 2016-05-25 国家电网公司 A kind of transmission line of electricity multichannel lightning current monitoring device
CN103822707A (en) * 2014-03-17 2014-05-28 中国科学院大气物理研究所 High-speed Lightning photometer
CN103822707B (en) * 2014-03-17 2016-04-20 中国科学院大气物理研究所 Thunder and lightning high-speed photometer
CN104635030A (en) * 2015-02-02 2015-05-20 深圳市楚邦科技有限公司 Lightning current waveform on-line monitoring system
CN108594024A (en) * 2017-12-11 2018-09-28 海南电网有限责任公司琼海供电局 For the Lightning Warning method and apparatus of power supply area

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Granted publication date: 20090415

Termination date: 20140321