CN101799497B - Thunder alarm instrument - Google Patents
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- CN101799497B CN101799497B CN2009100779804A CN200910077980A CN101799497B CN 101799497 B CN101799497 B CN 101799497B CN 2009100779804 A CN2009100779804 A CN 2009100779804A CN 200910077980 A CN200910077980 A CN 200910077980A CN 101799497 B CN101799497 B CN 101799497B
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Abstract
The invention discloses a thunder alarm instrument, comprising an electric-field sensor, a thunder signal process circuit and an alarm instrument; the electric-field sensor senses to a time-varying electromagnetic filed caused by lightening during the activity of thunder to generate time-varying current, and sends the time-varying current to the thunder signal process circuit; the thunder signal process circuit processes the input time-varying current signal, and finally coverts the time-varying current signal into a digital signal, and analyzes and judges the value and numerical density of the digital signal, if the value and numerical density reach a set fire line within a set period of time, the alarm instrument is notified to give out an alarm signal. The thunder alarm instrument of the invention has low construction cost, long working life, convenient operation and maintenance and large monitoring range, and can work under various climatic environments, thus being applicable to vast rural areas and outlying mountain areas lack of funds and technology.
Description
Technical field
The present invention relates to the lightening alarm field, particularly a kind of thunder alarm instrument.
Background technology
Along with the frequency and the seriousness of thunder and lightning disaster, various places are more and more paid attention to the protection and the early warning of thunder and lightning.Lightning monitoring generally uses rotary electric field instrument (Electric field mill) with forecast at present, rotary electric field instrument, be atmospheric electric field detector again, be based on the electrostatic effect of thunder and lightning, forecast that by measuring by the size and the change in polarity of the electrostatic field that produces in the thundercloud electrifying process advantage of the situation of thunder and lightning development, this instrument is to monitor the overall process that thunder and lightning takes place, develops, dissipates, its shortcoming is the lightening activity that can only monitor in measuring point radius 8～9km scope.Rotary electric field instrument divides outdoor probe and indoor host computer two parts, probe sensor need be used the motor driven in rotation, probe output has two passages: electric field signal passage and the reference channel signal that is produced by photoelectricity, indoor mainboard also comprises (as shown in Figure 1) phase regulating circuit, integrator, sync detection circuit, two-way comparer, beat oscillator etc., comparatively complicated, about 30 watts of power consumptions.
The patent No. is that ZL03160053.0 discloses constant speed rotation flip-over type electric field instrument, taking the lead in the domestic similar lightning monitoring product at present undoubtedly on the performance with on the result of use, the atmospheric electric field detector (rotary electric field instrument) that domestic and international 10 units (comprising external 3 families of the U.S., France and Spain, 2 families of subordinate unit of China Meteorological Administration) produce has been carried out scheduling to last in nearly 4 months contrast test in Xishuangbanna, Yunnan Jinghong City observatory China Meteorological Administration monitoring chamber in 2006, ' constant speed rotation flip-over type electric field instrument ' arranges first.But because monitoring is the electrostatic effect of thunder and lightning, monitoring range is less, because rotating part is arranged, the life-span will lack with static type is also corresponding fully, especially for being used for vast rural area and outlying mountain area, structure is still a bit complicated, power consumption is big, also some is higher for price.
Summary of the invention
For the little (deficiency that measuring point radius 8～9km), structure are comparatively complicated, power consumption is bigger, on the high side, need periodic maintenance of rotary electric field instrument reach that overcomes monitoring thunder and lightning static effect.The time power transformation magnetic field effect that a kind of thunder alarm instrument provided by the invention is based on that lightning produces, can in time send thunder and lightning development information and send the lightening alarm signal, and cheap, long working life, low in energy consumption, convenient operating maintenance, monitoring range are big, are applicable to that the vast rural area of the shortage of capital, shortage technology and outlying mountain area use.
In order to achieve the above object, a kind of thunder alarm instrument provided by the invention comprises: an electric-field sensor, a thunder and lightning signal processing circuit and an alarm.
Described electric-field sensor 1 adopts slab construction, be placed horizontally at the top of probe, based on the principle of conductor induced charge in electric field, power transformation magnetic field when lightning causes during according to lightening activity, time-dependent current when induction produces, and should the time time-dependent current send into the thunder and lightning signal processing circuit.
Described thunder and lightning signal processing circuit, be used to handle the time time-dependent current signal of input, with the time time-dependent current signal finally be converted to digital signal, numerical value and number density to this digital signal are analyzed discriminating, judge, this analysis is differentiated, judgement is the fine day that is based upon no thunder and lightning, cloudy day be background and with rotary ground atmospheric electric field detector contrast test on the basis of a large amount of observation datas, the different phenomenon situations that thunderstorm hour and no thunder and lightning are relatively arranged, choose warning line threshold level and size of data, choose the regular hour section to avoid because of the people, the unexpected wrong report that excessive spurious signal occurs and cause of machine is chosen suitable threshold level in case fail to report.If the numerical value of digital signal and number density reach the warning line of setting in the period of setting, then notify alarm to send alerting signal.
Described alarm is used to send alerting signal.
Wherein, described thunder alarm instrument further comprises: a probe, a base 12 and a tubular bracket 10.
Described electric-field sensor is arranged at the outside of probe, and is connected with the thunder and lightning signal processing circuit by signal lead-through 5; Described signal lead-through 5 is nested to be fixed in the center pit of shell, and by insulator 3 and casing insulation; Described thunder and lightning signal processing circuit all is encapsulated in the probe.
One end of described tubular bracket 10 is fixing with probe, and the other end and base 12 are fixing; Described tubular bracket 10 communicates with probe and base, and signal-transmitting cable and power lead are directly from popping one's head in by drawing in base 12 in the tubular bracket 10.
Wherein, described thunder and lightning signal processing circuit comprises:
One current/voltage transducer, be used for the time time-dependent current be converted to first o'clock time variant voltage.
One Hi-pass filter is used for removing first o'clock time variant voltage low frequency spurious signal greater than useful signal, in the amplification of back level amplification characteristic and higher gain is preferably arranged to guarantee the measured signal frequency range.
One voltage amplifier is used for first o'clock time variant voltage through Hi-pass filter is enlarged into second o'clock time variant voltage, sends into bandpass filter after isolating.
One bandpass filter is used for obtaining from second o'clock time variant voltage the signal of required frequency range, and this signal is sent into peak detctor.
One peak detctor is used to detect the peak signal of input signal, and this peak signal is sent into analog-to-digital converter.
One analog-to-digital converter is used for peak signal is converted to digital signal.
One data processing and control circuit, control circuit are used to control acquisition time and speed, access data, setting warning parameter and the self check of analog-to-digital converter; Data processing circuit is used for digital signal is analyzed discriminating, judges, if numerical value and number density reach the warning line of setting in the period of setting, then notifies alarm to send alerting signal; Described warning parameter comprises: warning line data, warning classification, duration.
Wherein, described probe comprises: the porose tubular shell 8, in a bottom surface has the casing cover 2 of center pit; Described casing cover 2 suits are fixed on the housing 8; Described tubular shell 8 and tubular bracket 10 are fixing by probe bracket web member 9.
Wherein, described casing cover 2, tubular shell 8 and tubular bracket 10 adopt stainless steel (No. 304 stainless steels) to make, and influence the life-span of instrument in case the coastland salt fog gets rusty.
Wherein, described thunder alarm instrument also can comprise a display, be connected with the thunder and lightning signal processing circuit by signal-transmitting cable, be used for showing being monitored regional thunder and lightning development (blank, blue, orange, redness) and lightening alarm classification (orange, redness) signal.Do not detect signal more than the white expression threshold level, blue expression current detection to signal be undesired signal, orange expression ' attention thunder and lightning ', red expression ' thunder and lightning is finally soon '.
Wherein, described alarm is ' an attention thunder and lightning ' and ' thunder and lightning finally soon luminous yellow, the red light of flicker of the phonetic alarm of ' two kind of situation and its correspondence is reported to the police.
Wherein, the plugs and sockets design of described thunder alarm instrument alerting signal transmission cable and instrument power source line is connected in instrument internal, alerting signal transmission cable and instrument power source line are drawn from base through the tubular scaffold inner chamber, are convenient to instrument operate as normal and avoid the nonvoluntary destruction of personnel under heavy rain strong wind weather situation.
The invention has the advantages that:
1, thunder alarm instrument provided by the invention is identical with the principle that traditional type thunder alarm instrument-rotary atmospheric electric field detector (Electric field mill) obtains signal, all is to utilize conductor can induce electric charge in electric field.Different is: thunder alarm instrument provided by the invention monitoring be the time power transformation magnetic field that thunder and lightning produces, so monitoring range is big, can monitor the situation that lightning takes place in monitoring point to the 50km zone, and the electrostatic effect that the thunder and lightning of rotary atmospheric electric field detector monitoring produces, the scope of monitoring has only the contingent situation of thunder and lightning in 8～9km scope.
2, thunder alarm instrument no-rotary part provided by the invention, simple in structure, easy to maintenance, long working life.
3, thunder alarm instrument provided by the invention is that the like product price is minimum, is 1/4th of the rotary atmospheric electric field detector used always, installs and uses and most convenient, is very suitable for vast rural area and outlying mountain area and uses.
4, probe of the present invention and signal processing circuit organically combine, and volume is little, in light weight; And except that electric-field sensor, do not have and expose the electric connection part, alerting signal transmission cable and instrument power source line attachment plug socket all lie in Instrument shell inside, can work under various climatic environments, and avoided artificial factor on certain degree; (about 2 watts) low in energy consumption, sun power easy to use, accumulate pond and civil power.
5, thunder alarm instrument provided by the invention and rotating electric field instrument are used in combination, can constitute the cheapest lightning monitoring equipment of emphasis defence area price to thunder and lightning, both can monitor the electrostatic effect that is produced in the overhead thundercloud forming process of measuring point, the time power transformation magnetic field that is produced in the time of can monitoring lightning beyond the tens of kilometer again, thus can monitor the situation that lightning takes place in the thousands of square kilometres of scopes.
Description of drawings
Fig. 1 is the circuit block diagram of the rotary atmospheric electric field detector of prior art;
Fig. 2 is a specific embodiment of the invention thunder alarm instrument structural drawing;
Fig. 3 is the circuit block diagram of thunder alarm instrument of the present invention;
Fig. 4 is contrast experiment's curve of thunder alarm instrument of the present invention and rotary atmospheric electric field detector.
The accompanying drawing sign
1, sensor 2, casing cover 3, insulator
4, hold-down nut 5, signal lead-through 6, wiring board
7, wiring board 8, shell 9, probe bracket web member
10, tubular bracket 11, support and base web member 12, base
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the present invention is elaborated.
The thunder alarm instrument of present embodiment as shown in Figure 2, comprising: an electric-field sensor 1, a thunder and lightning signal processing circuit, a probe, a base 12 and a tubular bracket 10.
Described electric-field sensor 1 adopts slab construction, is placed horizontally at the top of probe, and is connected with the thunder and lightning signal processing circuit by signal lead-through 5; Described signal lead-through 5 is by the insulator 3 nested positive centers of insulator that are fixed on, and by insulator 3 and casing insulation; Insulator 3 is by the hold-down nut 4 nested centers that are fixed on casing cover, and described thunder and lightning signal processing circuit board 6,7 is encapsulated in the probing shell.
Described probe comprises: a tubular shell 8, has the casing cover 2 of center pit; Described casing cover 2 suits are fixed on the housing 8.
One end of described tubular bracket 10 is fixing by probe bracket web member 9 and probe, and the other end is fixing with base 12 by support and base web member 11; Described tubular bracket 10 communicates with probe, is used to place the signal-transmitting cable and the power lead that are connected with the lightening alarm circuit in the tubular bracket.
Described casing cover 2, tubular shell 8 and support 10 adopt No. 304 stainless steel materials to make.
Described thunder and lightning signal processing circuit, as shown in Figure 3, comprise: a current/voltage transducer, a Hi-pass filter, a voltage amplifier, a follower, a bandpass filter, a peak detctor, an isolator, an analog-to-digital converter are used for peak signal is converted to digital signal, a data processing and control circuit, one, light crossing-signal and a screen display.
When lightening activity, time-dependent current when power transformation magnetic field induced on electric-field sensor when lightning was caused, time variant voltage when the I/V of prime transducer is transformed into, through Hi-pass filter, remove low frequency spurious signal greater than useful signal, to guarantee that the measured signal frequency range has amplification characteristic and higher gain preferably in the amplification of back level, again through voltage amplification, the signal of isolating the required frequency range of bandpass filter acquisition measured signal, the peak signal that peak detctor detects is sent to the digital signal that the A/D conversion obtains through isolation, numerical value and number density to this digital signal are carried out by analysis, differentiate, differentiate, reach the warning line of noting thunder and lightning, start alarm and send the ring tone of " attention thunder and lightning " and the blinking light that amber light sends yellow immediately as numerical value and number density, thunder and lightning may take place in this moment, but this area does not also take place, and tells everybody to note, and is ready.If signal amplitude further increases, number density is increased to the imminent warning line of thunder and lightning, and ring tone and red light that the startup alarm sends " thunder and lightning is coming " immediately send the light of red flicker, tell everybody thunder and lightning is coming, hide soon.As be furnished with computing machine, on screen, show ' attention thunder and lightning ' and ' thunder and lightning is ' two kind of situation finally soon with " orange " and " redness " curve map.(as in the open air, just in case have little time to run home, both feet close up, and nurse one's knees and squat down on the spot).The circuit of all thunder and lightning signal Processing all is contained in the probe, and alerting signal can be listened the sentient place of vision to the people by wireless or wire transmission.Alerting signal transmission line and power lead (available solar energy battery) are drawn by base by support.
External power supply: interchange (220V)/direct current ± (5V-12V), accumulator/solar cell.
Through (shown in Figure 4 more than 2 years with traditional type thunder alarm instrument-rotary electric field instrument (Electric field mill) contrast experiment, last figure is rotary atmospheric electric field detector recording curve, figure below is a thunder alarm instrument recording curve of the present invention), good effect is arranged on lightning monitoring and prediction effect.Be characterized in cheap, long working life, convenient operating maintenance, monitoring range is big, and is low in energy consumption, can work under various weather environments, is applicable to that vast rural area and outlying mountain area use.
Claims (6)
1. a thunder alarm instrument comprises: an electric-field sensor, a thunder and lightning signal processing circuit and an alarm;
It is characterized in that,
Described electric-field sensor (1) adopts slab construction, is placed horizontally at the top of probe, power transformation magnetic field when lightning causes when being used for according to lightening activity, time-dependent current when induction produces, and should the time time-dependent current send into the thunder and lightning signal processing circuit;
Described thunder and lightning signal processing circuit, be used to handle the time time-dependent current signal of input, with the time time-dependent current signal finally be converted to digital signal, and the numerical value of this digital signal and number density analyzed discriminating, judges, if numerical value and number density reach the warning line of setting in the period of setting, then notify alarm to send alerting signal;
Described alarm is used to send alerting signal;
Described thunder alarm instrument further comprises: a probe, a base (12) and a tubular bracket (10);
Described electric-field sensor is arranged at the outside of probe, and is connected with the thunder and lightning signal processing circuit by signal lead-through (5); Described signal lead-through (5) is nested to be fixed in the center pit of shell, and by insulator (3) and casing insulation; Described thunder and lightning signal processing circuit all is encapsulated in the probe;
One end of described tubular bracket (10) is fixing with probe, and the other end and base (12) are fixing; Described tubular bracket (10) communicates with probe and base, and signal-transmitting cable and power lead are directly drawn in base (12) by in the tubular bracket (10) from probe.
2. thunder alarm instrument according to claim 1 is characterized in that, described thunder and lightning signal processing circuit comprises:
One current/voltage transducer, be used for the time time-dependent current be converted to first o'clock time variant voltage;
One Hi-pass filter is used for removing first o'clock time variant voltage low frequency spurious signal greater than useful signal;
One voltage amplifier is used for first o'clock time variant voltage through Hi-pass filter is enlarged into second o'clock time variant voltage, sends into bandpass filter after isolating;
One bandpass filter is used for obtaining from second o'clock time variant voltage the signal of required frequency range, and this signal is sent into peak detctor;
One peak detctor is used to detect the peak signal of input signal, and this peak signal is sent into analog-to-digital converter;
One analog-to-digital converter is used for peak signal is converted to digital signal;
One data processing and control circuit, control circuit are used to control acquisition time and speed, access data, setting warning parameter and the self check of analog-to-digital converter; Data processing circuit is used for digital signal is analyzed discriminating, judges, if numerical value and number density reach the warning line of setting in the period of setting, then notifies alarm to send alerting signal; Described warning parameter comprises: warning line data, warning classification, duration.
3. thunder alarm instrument according to claim 1 is characterized in that, described probe comprises: the porose tubular shell (8), in a bottom surface has the casing cover (2) of center pit; Described casing cover (2) suit is fixed on the housing (8); Described tubular shell (8) and tubular bracket (10) are fixing by probe bracket web member (9).
4. thunder alarm instrument according to claim 3 is characterized in that, described casing cover (2), tubular shell (8) and tubular bracket (10) adopt stainless steel material to make.
5. thunder alarm instrument according to claim 2, it is characterized in that, described thunder alarm instrument also comprises a display, is connected with the thunder and lightning signal processing circuit by signal-transmitting cable, is used for showing being monitored regional thunder and lightning development and lightening alarm sorting signal.
6. thunder alarm instrument according to claim 1 is characterized in that described alarm is made up of acoustic alarm device and/or light crossing-signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100779804A CN101799497B (en) | 2009-02-06 | 2009-02-06 | Thunder alarm instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100779804A CN101799497B (en) | 2009-02-06 | 2009-02-06 | Thunder alarm instrument |
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| CN101799497A CN101799497A (en) | 2010-08-11 |
| CN101799497B true CN101799497B (en) | 2011-11-09 |
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| CN2009100779804A Active CN101799497B (en) | 2009-02-06 | 2009-02-06 | Thunder alarm instrument |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048552B (en) * | 2012-12-20 | 2015-02-25 | 孙海元 | Method for lightning early warning |
| CN103901256B (en) * | 2012-12-25 | 2018-09-28 | 北京嘉岳同乐极电子有限公司 | A kind of novel thunder-strike current measuring apparatus |
| CN103308780B (en) * | 2013-06-25 | 2015-12-23 | 重庆大学 | Total electric field intensity of ultra-high voltage direct current power transmission line measurement mechanism and measuring method |
| CN105529678B (en) * | 2016-02-25 | 2018-08-24 | 国网山东省电力公司郓城县供电公司 | The method for reducing low-voltage collecting meter reading system broken by lightning rate |
| CN109066578B (en) * | 2018-09-20 | 2019-08-30 | 国家电网公司 | A kind of thunder and lightning active protecting device |
| CN110850185B (en) * | 2019-12-02 | 2021-09-24 | 象辑知源（武汉）科技有限公司 | Lightning forecasting method based on power transmission line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296842A (en) * | 1990-04-30 | 1994-03-22 | Central Lightning Protection Co., Ltd. | Thunder alarm |
| CN1670536A (en) * | 2004-03-17 | 2005-09-21 | 四川康姆逊电磁防护有限责任公司 | Lightning stroke detection and warning system |
| CN201368897Y (en) * | 2009-02-10 | 2009-12-23 | 中国科学院空间科学与应用研究中心 | Thunder alarm instrument based on time-varying electromagnetic field effect |
-
2009
- 2009-02-06 CN CN2009100779804A patent/CN101799497B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296842A (en) * | 1990-04-30 | 1994-03-22 | Central Lightning Protection Co., Ltd. | Thunder alarm |
| CN1670536A (en) * | 2004-03-17 | 2005-09-21 | 四川康姆逊电磁防护有限责任公司 | Lightning stroke detection and warning system |
| CN201368897Y (en) * | 2009-02-10 | 2009-12-23 | 中国科学院空间科学与应用研究中心 | Thunder alarm instrument based on time-varying electromagnetic field effect |
Non-Patent Citations (2)
| Title |
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| JP特开2003-149349A 2003.05.21 |
| JP特开2003-28968A 2003.01.29 |
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Owner name: JIANGSU PROVINCIAL RADIO INST CO., LTD. Free format text: FORMER OWNER: SPACE SCIENCE + APPLIED RESEARCH CENTRE, CHINESE ACADEMY OF SCIENCES Effective date: 20140414 |
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Effective date of registration: 20191216 Address after: 214000 28 Weiming Road, Binhu District, Wuxi City, Jiangsu Province Patentee after: Aerospace new weather Technology Co., Ltd Address before: Jinxi road Binhu District 214125 Jiangsu city of Wuxi province No. 100 Patentee before: Jiangsu Provincial Radio Inst Co., Ltd. |