★ japan meteorological agency formula choice devices
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★★Japan Meteorological Agency formula choice Japan Meteorological Agency formula choice Devices.Devices.
HIRAKAWA Works, Inc.HIRAKAWA Works, Inc.
PopovThPopovThunderunder
Coherer Type Lightning Prediction & Detection DevicesCoherer Type Lightning Prediction & Detection Devices
For machinery controlFor machinery control
Hazardous lightning
Accident case
10km
Striking point
Place of the damage
Thinking Thunder Roars in the distance but it strikes Thinking Thunder Roars in the distance but it strikes overhead all at once overhead all at once !!
Fatal accident due to late notice Fatal accident due to late notice
Lightning HitLightning Hit
00:00:0000:00:0000:01:1100:01:11
00:02:1600:02:16
00:03:3200:03:32
00:04:1300:04:13 00:05:0200:05:02
00:06:2000:06:20
00:07:1100:07:1100:08:0500:08:05
00:11:0200:11:02
00:13:5200:13:52
Hazardous lightning
The thunder moves the wide area very fast. It is difficult for us to be opposed to movement of the thunder.
When you go out outdoors, you must attention to general weather information enough beforehand. You can do only the movement that is much slower than the thunder. Therefore, All lightning detector and Lightning detection or Lightning prediction systems cannot completely protect you from lightning attacking your body directly. However, you can completely protect you from lightning attacking your body directly by using the weather information well.
You should not think about only a method to survive when you were caught in thunder. Even if you got knowledge for you to survive no matter how much, you cannot completely protect you from lightning attacking your body directly.
You always learn it positively and should practice how you must have it so that you are not caught in thunder from the beginning. The effort of this you is the most reliable thing which completely than lightning attacking your body directly protects you.
Our PopovThunder is a part to remove the damage by the thunder such as electrics not to be able to do anything for by the effort of your own.
PopovThunder PopovThunder is a thunder detector to protect your PopovThunder is a thunder detector to protect your equipment or system than Lightning. equipment or system than Lightning. PopovThunder possesses all functions that are necessary to PopovThunder possesses all functions that are necessary to protect your equipment or system from Lightning, and all protect your equipment or system from Lightning, and all the movement is automatic.the movement is automatic.The thunder warning output from PopovThunder is only The thunder warning output from PopovThunder is only one, and there is not a thing bothering you. one, and there is not a thing bothering you.
•Open breakersOpen breakers•Switch power sourcesSwitch power sources•Change production lineChange production line•Turn off or on valvesTurn off or on valves•Operate automated equipmentOperate automated equipment•Warning signal to fire stationsWarning signal to fire stations
You can use the warning output from PopovThunder to your You can use the warning output from PopovThunder to your needs of the needs of the equipment or equipment or system at will.system at will.
PatentPatent JP 3266884JP 3266884 US 6586920US 6586920PopovThunder
Compact and Easy to install to existing circuitCompact and Easy to install to existing circuit
Detection UnitHW-PR-101A
Detection coil unitHW-PRPT-1
Installation view
○ Power source system at commercial radio station.
○ PopovThunder controls power breaker at left top.
HERE!
PopovThunder
A The 1st strike pointB The 2nd strike point
Lightning strike occurs at least where in the circle of radius AB and thinks that there wasnot the wonder.
We define this circle as "hazardous zone".
A B
Hazardous zone
If it is thunder of the summer when it is average, hazardous zone is about 10km, but, by the thunder of the winter to occur in North Japan and North Europe, enlarges hazardous zone than 60km.
Hazardous zone changes with the speed of the Hazardous zone changes with the speed of the second. And Lightning strike occurs the next second. And Lightning strike occurs the next moment.moment.
PopovThunder How it Works
Detect lightning before strikesDetect lightning before strikes
When real Hazardous zone of the moment comes close to about 1km, PopovThunder outputs a warning signal without lightning.
Detect lightning dischargeDetect lightning discharge
When real Hazardous zone of the moment comes close to about 10km, PopovThunder detects lightning occurring in Hazardous zone and outputs a warning signal.
Selectable DetectionSelectable Detection
When it does not give system damage even if Hazardous zone comes close to about 10km, PopovThunder does not output a warning signal. This is calculated by the ability that a system resists Surge.
Applicable at transmit stationApplicable at transmit station
PopovThunder is hard to be affected by a strong transmission of a message electric wave, and there is little misdetection.
Detect equipment electric sparks Detect equipment electric sparks
PopovThunder detects the terrible spark from the equipment which gives a system damage.
PopovThunder How it Works
Warning before strike?
Hazardous zone was in Defense zone.gone
UsualWarning
PopovThunder
25kA Less
25-100kA Less
100-200kA Less
200kA or more
Scale of Lightning strike
10 km
Defense zone
PopovThunder Hazardous zone
Striking Point
PopovThunder How it Works
Plotting from actual data I
PopovThunder detects lightning PopovThunder detects lightning before strike.before strike.
Defense zone is about 10km. Defense zone is about 10km. In a calculation, Hazardous zone In a calculation, Hazardous zone came close to 6km then. came close to 6km then. However, real Hazardous zone However, real Hazardous zone approached to less than 1km then, approached to less than 1km then, and PopovThunder output a and PopovThunder output a warning. warning.
gone
No detect lightning even in hazardous zone that No detect lightning even in hazardous zone that not affects with protected equipment & circuit.not affects with protected equipment & circuit.
Detect Dangerous Lightning even if Detect Dangerous Lightning even if away from PopovThunder.away from PopovThunder.
10 km
UsualWarning
PopovThunder
Defense zone
PopovThunder Hazardous zone
Striking Point
PopovThunder How it Works
25kA Less
25-100kA Less
100-200kA Less
200kA or more
Scale of Lightning strike
Plotting from actual data Ⅱ
PopovThunder detects lightning PopovThunder detects lightning comes closer or goes away.comes closer or goes away.
UsualWarning
PopovThunder
10 km
Defense zone
PopovThunder Hazardous zone
Striking Point
PopovThunder How it works
25kA Less
25-100kA Less
100-200kA Less
200kA or more
Scale of Lightning strike
Plotting from actual data Ⅲ
○ PopovThunder is for lightning protection such as electrics. For example, you must not use PopovThunder for the purpose of protecting the body of the person from thunder.
○ It is necessary for lightning protection such as electrics to put some effective parts together definitely. PopovThunder is a part of that purpose.
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