CN202443139U

CN202443139U - Thunderstorm detection and forecasting device

Info

Publication number: CN202443139U
Application number: CN201220046244XU
Authority: CN
Inventors: 魏传永; 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-09-19
Anticipated expiration: 2022-02-13

Abstract

The utility model belongs to the field of electronic technologies and weather forecast technologies and relates to a thunderstorm detection and forecasting device. The forecasting device consists of a 6V direct current power supply, a VLF (Very Low Frequency) band resonance circuit, a cascode high-frequency amplification circuit, a flashing maintaining circuit and a sound and light signal power amplification circuit. Before the advent of thunderstorms, low-frequency radio electromagnetic waves are generated after a large number of static electricity accumulated in clouds is discharged, and the electromagnetic waves with the frequency of 250-350 kHz can be received by using a low-frequency radio receiver with the resonant frequency of 250-350 kHz and applying the principle of electromagnetic induction. The thunderstorm detection and forecasting device disclosed by the utility model is a sound and light electronic early-warning device which can early warn the occurrence of thunder and lightning before the advent of the thunderstorms, the discharge phenomenon between clouds in distant sky or between the clouds and the earth can be detected, and the approaching of the thunder and lightning in the thunderstorms are early warned, so that corresponding measures for resisting thunder and storms can be rapidly adopted to eliminate an imminent threat.

Description

Thunderstorm rain is surveyed predictor

Technical field

The utility model belongs to electronic technology and weather forecast technical field, relates to a kind of thunderstorm rain and surveys predictor.

Background technology

We can see or hear the phenomenon that thunders and lightns before the thunderstorm rain of being everlasting arrives.Being easy to initiation fire, damaging some electrical equipment responsive of thunder and lightning to thunder and lightning, even jeopardize personal safety! Annual summer; The south of China is the season that thunderstorm rain takes place frequently; Local observatory forecasts that in one day 24 hours thunderstorm rain occurs in that period actually, and this still exists very big difficulty, forecasts to have very big realistic meaning if the ability short-term is closed on thunderstorm rain.

When having a large amount of static to concentrate at some zones overhead, overhead some the rambling low frequency radio noises abrim in this area, these frequencies are many between 250kHz～350kHz.Before thunderstorm rain arrives; The low frequency radio magnetic wave that is produced behind a large amount of static discharges that gather in the cloud layer; Use electromagnetic induction principle,, should receive the electromagnetic wave of these frequencies with the LF radio receiver of a resonance frequency at 250kHz～350kHz.

Before thunderstorm rain arrives, have a large amount of static in the thunderstorm rain cloud cluster of distant place sky, cause between the cloud layer or cloud layer and the earth between can produce electric discharge phenomena, its surrounding area will produce the very wide all rambling radio noise of frequency spectrum simultaneously.We use general AM receiver just can receive the lightning undesired signal of moment, but the ordinary amplitude modulation radio can only receive the lightning higher frequency range of medium frequency that generates electromagnetic waves.Therefore, utilize the ordinary amplitude modulation radio to exist significant limitation as the thunderstorm rain predictor.

Below specify this thunderstorm rain and survey predictor related correlation technique content in implementation process.

The utility model content

Goal of the invention and beneficial effect: the described thunderstorm rain of the utility model is surveyed predictor can come a kind of acousto-optic electronic early warning device of early warning thunder and lightning generation before at thunderstorm rain; It can detect in the sky of a distant place between the cloud layer or the electric discharge phenomena between cloud layer and the earth; Through the thunder and lightning in the thunderstorm rain is closed on early warning; We can promptly take corresponding lightning protection, anti-heavy rain measure, accomplish to prevent trouble before it happens.

The circuit working principle: it is a tuned amplifier and acousto-optic amplifying circuit that thunderstorm rain is surveyed predictor.When having the same day a large amount of RF energies near antenna, to assemble in the air, device will start first order amplifying circuit, and when much thunder and lightning more frequent, thunder and lightning will produce the radionoise of a series of VLF frequency ranges.The responsible exactly inspection of predictor is picked up near 300kHz and frequency of radio station is not set, and by thunderstorm generation of static electricity radionoise, picks up electromagnetic wave signal through the antenna inspection of device.Oscillator coil L1 and capacitor C 1 are formed the resonant circuit of a 300kHz, and the base stage of utilizing capacitor C 2 to be coupled to NPN transistor BG1 is amplified.The signal that is exaggerated is again by the collector coupled of the NPN transistor BG1 base stage to PNP transistor BG2.PNP transistor BG2 is the some of flashing circuit; Being biased at flashing circuit does not at ordinary times have under the blink states; Amplify PNP transistor BG2 and make its base stage connection circuit ground up to having a large amount of RF energies to trigger high frequency in the air; The positive and negative flashing circuit real-time working that is fed to is promptly accomplished a flicker cycle until electrochemical capacitor C4 discharge off.When the D1 that passes through as electrochemical capacitor C4 charged once more, the circuit of device had just resetted, and follows the arrival of next flicker cycle.

Technical scheme: thunderstorm rain is surveyed predictor, is made up of 6V direct supply, VLF frequency band resonance circuit and cascode high-frequency amplifier circuit, flicker holding circuit, sound and light signal power amplification circuit, and its characteristic comprises:

VLF frequency band resonance circuit and cascode high-frequency amplifier circuit: the end of an end, antenna TX and the coupling capacitance C2 of the termination resonant capacitance C1 of oscillator coil L1; The other end connection circuit ground GND of the other end resonant capacitor C 1 of oscillator coil L1; The base stage of NPN transistor BG1 connects the other end of coupling capacitance C2; The end of the collector connecting resistance R1 of NPN transistor BG1, the anodal VCC of the other end connection circuit of resistance R 1, the emitter connection circuit ground GND of NPN transistor BG1;

Flicker holding circuit: form by PNP transistor BG2, NPN transistor BG3, diode D1, trimmer potentiometer RP, resistance R 3, resistance R 4 and electrochemical capacitor C4, capacitor C 5; The collector of the termination NPN transistor BG1 of coupling capacitance C3; The base stage of PNP transistor BG2 connects the other end of coupling capacitance C3, the end of trimmer potentiometer RP and an end of resistance R 2; The anodal VCC of the other end of trimmer potentiometer RP and lever arm connection circuit thereof; The anodal VCC of the anodal connection circuit of the collector of NPN transistor BG3 and diode D1; The negative pole of diode D1 connects the emitter of PNP transistor BG2 and the positive pole of electrochemical capacitor C4, and the other end of the negative pole connecting resistance R2 of electrochemical capacitor C4 and the base stage of NPN transistor BG4 connect an end of base stage and the capacitor C 5 of NPN transistor BG3 after the collector series connection resistance R 3 of PNP transistor BG2; The emitter of another termination NPN transistor BG3 of capacitor C 5 and an end of resistance R 4, the other end connection circuit ground GND of resistance R 4;

Sound and light signal power amplification circuit: form by NPN transistor BG4, hummer HA, LED and dropping resistor R5; The base stage of NPN transistor BG4 connects the emitter of NPN transistor BG3; The negative pole of the collector sending and receiving optical diode LED of NPN transistor BG4 and the negative pole of hummer HA; The anodal VCC of connection circuit behind the positive pole serial connection dropping resistor R5 of LED, the anodal VCC of the anodal connection circuit of hummer HA.

The positive pole of 6V direct supply links to each other with circuit anode VCC, and the negative pole of 6V direct supply links to each other with circuit ground GND.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram that thunderstorm rain is surveyed predictor.

Embodiment

Survey the technical requirement of components and parts of circuit working schematic diagram and description of drawings and the following stated of predictor according to the thunderstorm rain shown in the accompanying drawing 1 and implement, can realize the utility model.

The selection of components and parts and technical parameter thereof

L1 is an oscillator coil, and inductance value is 330 μ H;

BG1, BG3, BG4 are NPN transistor, and the model of selecting for use is 2N3904, β >=150;

BG2 selects PNP transistor for use, and the model of selecting for use is 2N3906, requires enlargement factor β >=180;

D1 is a diode, and the model of selecting for use is 1N914; LED is a red light emitting diodes;

R1～R5 uses the RTX-1/8W metalfilmresistor, and resistance is respectively: 3.9K Ω, 22K Ω, 2.2K Ω, 2.7K Ω, 360 Ω;

RP selects the horizontal small trimmer potentiometer of common plastics encapsulation for use, and its resistance is 22K Ω;

C1～C3, C5 are with CC1 type high frequency Leaded Ceramic Disc Capacitor, and 4 capacity are respectively: 680PF, 0.01 μ F, 0.01 μ F, 5000PF;

C4 is with CD11-16V type electrochemical capacitor, and capacity is 100 μ F;

HA selects CPB14A12-4.0 type direct current piezoelectric buzzer for use, and its parameter is: physical dimension is φ 14mm * 7.5mm, and weight is 0.9g, and WV is 4V～9V, working current≤15mA;

Antenna TX selects the copper wire of one section φ 1mm, length 650mm for use, also can select portable radio 550mm telescopic antenna commonly used for use;

The 6V direct supply can adopt four joint 7# alkaline batteries to compose in series.

Circuit production main points and circuit debugging

It is more accurate that circuit debugging is preferably arranged in the fine period.Thunderstorm rain is surveyed trimmer potentiometer RP in the predictor circuit and is adjusted to light emitting diode D2 and just extinguish and get final product; After transferring trimmer potentiometer RP to mix up, can be near predictor use have hair dryer or the electronic lighter etc. of AC-DC can produce the electrical equipment of electric spark, examine that can send out LED in the predictor intermittent flicker several down; After trimmer potentiometer RP mixes up; As thunderstorm rain arrive and LED in the flicker; Can turn on an amplitude modulation AM radio simultaneously and be tuned to than low-frequency range and do not have on the frequency of broadcasting, listen to just listen whether be attended by mixed and disorderly radio noise, in case there is thunderstorm rain interim; It will flash LED constantly, simultaneously hummer HA interrupted electric can intermittently sending " too ... " Sound;

Thunderstorm rain after mixing up is surveyed predictor can be surveyed thunder and lightning in 7～8 kilometer range generation;

When if the sensitivity of predictor is low, can improve its sensitivity through increasing antenna length to electromagnetic wave induction.

Operation instruction

In order to reach the effect of early warning, thunderstorm rain is surveyed predictor preferably can be installed in the place away from various electromagnetic interference sources;

Attention: the utility model is a coming predictor of thunderstorm rain, can be used as movable predictors such as the open-air camping of vast donkey friend, but itself does not have any lightning protection function!

Claims

1. a thunderstorm rain is surveyed predictor, is made up of 6V direct supply, VLF frequency band resonance circuit and cascode high-frequency amplifier circuit, flicker holding circuit, sound and light signal power amplification circuit, and its characteristic comprises:

The end of an end, antenna TX and the coupling capacitance C2 of the termination resonant capacitance C1 of oscillator coil L1 in VLF frequency band resonance circuit and the cascode high-frequency amplifier circuit; The other end connection circuit ground GND of the other end resonant capacitor C 1 of oscillator coil L1; The base stage of NPN transistor BG1 connects the other end of coupling capacitance C2; The end of the collector connecting resistance R1 of NPN transistor BG1, the anodal VCC of the other end connection circuit of resistance R 1, the emitter connection circuit ground GND of NPN transistor BG1;

The flicker holding circuit is made up of PNP transistor BG2, NPN transistor BG3, diode D1, trimmer potentiometer RP, resistance R 3, resistance R 4 and electrochemical capacitor C4, capacitor C 5; The collector of the termination NPN transistor BG1 of coupling capacitance C3; The base stage of PNP transistor BG2 connects the other end of coupling capacitance C3, the end of trimmer potentiometer RP and an end of resistance R 2; The anodal VCC of the other end of trimmer potentiometer RP and lever arm connection circuit thereof; The anodal VCC of the anodal connection circuit of the collector of NPN transistor BG3 and diode D1; The negative pole of diode D1 connects the emitter of PNP transistor BG2 and the positive pole of electrochemical capacitor C4, and the other end of the negative pole connecting resistance R2 of electrochemical capacitor C4 and the base stage of NPN transistor BG4 connect an end of base stage and the capacitor C 5 of NPN transistor BG3 after the collector series connection resistance R 3 of PNP transistor BG2; The emitter of another termination NPN transistor BG3 of capacitor C 5 and an end of resistance R 4, the other end connection circuit ground GND of resistance R 4;

The sound and light signal power amplification circuit is made up of NPN transistor BG4, hummer HA, LED and dropping resistor R5; The base stage of NPN transistor BG4 connects the emitter of NPN transistor BG3; The negative pole of the collector sending and receiving optical diode LED of NPN transistor BG4 and the negative pole of hummer HA; The anodal VCC of connection circuit behind the positive pole serial connection dropping resistor R5 of LED, the anodal VCC of the anodal connection circuit of hummer HA.

2. thunderstorm rain according to claim 1 is surveyed predictor, and it is characterized in that: the positive pole of 6V direct supply links to each other with circuit anode VCC, and the negative pole of 6V direct supply links to each other with circuit ground GND.