JPS57161576A - Thundercloud detecting system - Google Patents

Thundercloud detecting system

Info

Publication number
JPS57161576A
JPS57161576A JP4628181A JP4628181A JPS57161576A JP S57161576 A JPS57161576 A JP S57161576A JP 4628181 A JP4628181 A JP 4628181A JP 4628181 A JP4628181 A JP 4628181A JP S57161576 A JPS57161576 A JP S57161576A
Authority
JP
Japan
Prior art keywords
electric field
thundercloud
air
collector
rotated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4628181A
Other languages
Japanese (ja)
Inventor
Tatsumi Furukawa
Teizo Yamamoto
Koichi Sumiya
Kiyousuke Hamatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Technical Research and Development Institute of Japan Defence Agency
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technical Research and Development Institute of Japan Defence Agency filed Critical Technical Research and Development Institute of Japan Defence Agency
Priority to JP4628181A priority Critical patent/JPS57161576A/en
Publication of JPS57161576A publication Critical patent/JPS57161576A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/16—Measuring atmospheric potential differences, e.g. due to electrical charges in clouds

Landscapes

  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

PURPOSE:To detect thundercloud correctly, by measuring an electric field in the air by using an electric field meter and deciding whether the situation of its variation coincides with the previously set conditions or not. CONSTITUTION:Holes 8 are provided on the upper surface of a case 7 and an electric field meter is constituted in the case 7 by disposing a collector 10 to be rotated by a motor 9. When the collector 10 made of a metallic plate is rotated and faces to the air through the holes 8, it performs current collection and when it is cut off from the air, it discharges electricity and detects an electric field intensity in the air as alternating signals. By such method, the presence or absence of an electric field having intensity stronger than the prescribed value, the time or ratio which said field intensity occupies in the fixed time and the frequency of polarity variation of electric field value are calculated, and it is decided whether the thundercloud exists or not. The detection of thundercloud is more exactly performed in comparison with the measurement by a radar because thundercloud before thunder rolls is detected through the character of its electrification.
JP4628181A 1981-03-31 1981-03-31 Thundercloud detecting system Pending JPS57161576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4628181A JPS57161576A (en) 1981-03-31 1981-03-31 Thundercloud detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4628181A JPS57161576A (en) 1981-03-31 1981-03-31 Thundercloud detecting system

Publications (1)

Publication Number Publication Date
JPS57161576A true JPS57161576A (en) 1982-10-05

Family

ID=12742839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4628181A Pending JPS57161576A (en) 1981-03-31 1981-03-31 Thundercloud detecting system

Country Status (1)

Country Link
JP (1) JPS57161576A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602343A1 (en) * 1986-07-31 1988-02-05 Onera (Off Nat Aerospatiale) Method and installation for predicting the change in atmospheric electrical phenemona linked with stormy conditions
FR2602342A1 (en) * 1986-07-31 1988-02-05 Onera (Off Nat Aerospatiale) Method and installation for detecting the appearance and disappearance of atmospheric electrical phenomena linked with stormy conditions
CN108680798A (en) * 2018-04-02 2018-10-19 北京华云东方探测技术有限公司 Lightning monitoring and early warning method and system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454690A (en) * 1977-10-11 1979-05-01 Kato Giichirou Electric weather prenotice device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454690A (en) * 1977-10-11 1979-05-01 Kato Giichirou Electric weather prenotice device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602343A1 (en) * 1986-07-31 1988-02-05 Onera (Off Nat Aerospatiale) Method and installation for predicting the change in atmospheric electrical phenemona linked with stormy conditions
FR2602342A1 (en) * 1986-07-31 1988-02-05 Onera (Off Nat Aerospatiale) Method and installation for detecting the appearance and disappearance of atmospheric electrical phenomena linked with stormy conditions
CN108680798A (en) * 2018-04-02 2018-10-19 北京华云东方探测技术有限公司 Lightning monitoring and early warning method and system
CN108680798B (en) * 2018-04-02 2020-07-31 北京华云东方探测技术有限公司 Lightning monitoring and early warning method and system

Similar Documents

Publication Publication Date Title
CA2207707A1 (en) Apparatus for detecting an insulation defect in a device connected into an electrical power transmission or distribution network and corresponding detection process
ES531934A0 (en) AN INSTALLATION AND A METHOD TO DETECT THE PROXIMITY OF AN OBJECT TO AN ALTERNATING CURRENT ELECTRIC POWER LINE
SE8603736L (en) SET AND DEVICE FOR ANALYZING THE COATING ON A ROAD SURFACE
JPS57142568A (en) Earth trouble detecting device for dc power transmission system
CA1251535A (en) Device for detecting and localizing a fault in an aerial ropeway transport installation
JPS57161576A (en) Thundercloud detecting system
EP1065508A3 (en) Tamper/power failure discrimination method and apparatus
SE9400989D0 (en) Method and apparatus for detecting when power system is out of phase
CN113125905B (en) Arc fault detection device, method, apparatus and storage medium
ES295689U (en) Eddy current probes for detecting faults in structures and methods of detecting such faults.
JPS57190212A (en) Device for detecting abnormality of measuring device
JPS561368A (en) Failure detection pair cable
JPS5654120A (en) Amplitude discriminating circuit for magnetic recorder
JPS578464A (en) Layer short circuit detecting device of electric winding
JPS5471347A (en) State detector
JPS5664633A (en) Leak monitoring system
CN2179976Y (en) Multi-functional leakage current detector
JPS5784370A (en) Monitoring device for rotary electric machine field winding insulation resistance
JPS5551349A (en) Sodium ionization detector
JPS5372101A (en) Dielectric strength tester for electric machinery
JPS5672357A (en) Failure detector
JPS641348A (en) Transmitter-receiver
JPS62134574A (en) Apparatus for detecting corona discharge
JPS5352901A (en) Detection and detector for fault point in motor
JPS5714482A (en) Method and apparatus for detecting abnormality in high frequency electric welding