Corona detection system and method

Patent metadata

Field	Value
Publication number	US-11280820-B2
Application number	US-201916627317-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Aug 2, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A system and method for detecting electrical events, often a corona associated with an impending lightning strike, including a coupling mechanism configured to establish an electromagnetic connection with a conductive substrate to receive signals intercepted by the conductive substrate. A detector circuit converts and discriminates the received signals into output signals. An output mechanism records and/or transmits the output signals, as well as determines if the output signal represents a qualified event signal.

First claim

What is claimed is:

1. A system for detecting electrical events in an environment, the system comprising:
a conductive substrate capable of intercepting electromagnetic signals from the environment across a selected spectrum of frequencies;
a coupling mechanism configured to establish an inductively-coupled electromagnetic connection with said conductive substrate to receive at least one intercepted electromagnetic signal from said conductive substrate;
a detector circuit including a first transforming module configured to select a first frequency from said at least one intercepted signal, and to convert said selected first frequency into at least one selected signal; and
an output mechanism electrically connected to said detector circuit to receive said at least one selected signal and configured to produce at least one of (i) a perceptible warning, (ii) a warning signal, or (iii) a stored signal; and
wherein said coupling mechanism has at least inductive and resistive frequency ranges across the selected spectrum of frequencies, and said coupling mechanism receives said at least one intercepted electromagnetic signal within said inductive frequency range.

2. The system of claim 1 wherein said detector circuit further comprises:
a second transforming module, configured to select a second frequency from said at least one intercepted signal and to convert said selected second frequency to at least one second selected signal; and
a logic module which receives the at least one selected signal and the at least one second selected signal, and produces at least one output signal which is sent to said output mechanism.

3. The system of claim 2 wherein the logic module includes:
a logic gate having a first input and a second input and connected to said output mechanism, said first input connected to said first transforming module and said second input connected to said second transforming module; and
wherein said first input receives said at least one selected signal from said first transforming module and said second input receives said at least one second selected signal.

4. The system of claim 1 wherein said coupling mechanism is a split core ferrite transformer.

5. The system of claim 1 further comprising a protection mechanism physically connected with at least one connection of at least one piece of electronic equipment and said protection mechanism is adapted to mechanically disconnect said at least one connection when a warning signal is sent to said protection mechanism from said output mechanism.

6. The system of claim 1 wherein said detector circuit further comprises an enhancement module configured to shunt excess intercepted electromagnetic signal via signal-to-ground conduction.

7. The system of claim 6 wherein said detector circuit further comprises an input module, wherein said input module receives said intercepted signal, producing at least one input signal and provides said at least one input signal to said transforming module, and said transforming module performs permeability tuning of said intercepted signal to produce at least one passed signal.

8. The system of claim 1 wherein said output mechanism comprises a data logger and a digital display.

9. The system of claim 1 wherein said output mechanism comprises a communications system to transmit the warning signal.

10. The system of claim 1 wherein said output mechanism qualifies said at least one output signal according to at least one test criteria to produce one of a qualified event signal or a non-qualified event signal.

11. A method of detecting electrical events, comprising the steps of:
selecting a device comprising a coupling mechanism configured to receive electromagnetic signals across a selected spectrum of frequencies, and a detector circuit including a first transforming module configured to select a first frequency from a received electromagnetic signal and to convert said selected first frequency into at least one selected signal, wherein said coupling mechanism has at least inductive and resistive frequency ranges across the selected spectrum of frequencies;
connecting said device to an output mechanism configured to receive at least one signal from said detector circuit;
coupling said coupling mechanism with an inductive connection to a conductive substrate found in the environment, said conductive substrate capable of intercepting electromagnetic signals from the environment;
intercepting electromagnetic signals from the environment with said coupling mechanism, and said coupling mechanism receives said at least one intercepted electromagnetic signal within said inductive frequency range;
producing at least one signal from the detector circuit; and
receiving said at least one signal with the output mechanism.

12. The method of claim 11 further comprising the steps of
qualifying said at least one signal according to at least one test criteria by said output mechanism; and
producing one of a qualified event signal or a non-qualified event signal.

13. The method of claim 11 wherein said device is selected to include a protection mechanism and the method further includes the step of physically disconnecting at least one connection from at least one piece of electronic equipment utilizing said protection mechanism.

14. The method of claim 11 wherein said output mechanism further comprises an interconnected communications system and the method further includes the step of communicating said at least one signal to a remote station.

15. The method of claim 11 wherein said detector circuit further comprises an enhancement module configured to shunt excess selected signal to ground.

16. The method of claim 15 , further comprising the step of shunting excess selected signal to ground.

17. The method of claim 11 , wherein said detector circuit further comprises an input module; wherein said input module receives said intercepted signal, producing at least one input signal and provides said at least one input signal to said transforming module, said transforming module performs permeability tuning of said intercepted signal, producing said at least one selected signal.

18. The method of claim 11 , wherein said detector circuit further comprises:
a second transforming module, configured to select a second frequency from said at least one intercepted signal and to convert said selected second frequency to at least one second selected signal;
a logic gate comprising a first and a second input and connected to said output mechanism, said first input connected to said first transforming module and said second input connected to said second transforming module; and
wherein said first input receives said at least one selected signal from said first transforming module and said second input receives said at least one second selected signal and wherein said logic gate produces at least one output signal, sending said at least one output signal to said output mechanism.

19. A system for detecting electrical events in an environment, the system comprising:
a conductive substrate capable of intercepting electromagnetic signals from the environment across a selected spectrum of frequencies;
a coupling mechanism configured to establish an inductively-coupled electromagnetic connection with said conductive substrate to receive at least one intercepted electromagnetic signal from said conductive substrate;
a detector circuit including a first transforming module configured to select a first frequency from said at least one intercepted signal, and to

Assignees

• Woods Hole Oceanographic Inst

Inventors

• Brainard Ii Edward C
• Weedon Hans J

Classifications

• G01W1/16 Primary

  Measuring atmospheric potential differences, e.g. due to electrical charges in clouds (measuring potentiels in general G01R) · CPC title

• G01R29/12

  Measuring electrostatic fields {or voltage-potential} · CPC title

• G01R29/0842

  Measurements related to lightning, e.g. measuring electric disturbances, warning systems · CPC title

• G08B21/18

  Status alarms (G08B21/02 takes precedence) · CPC title

• G01R29/08 Primary

  Measuring electromagnetic field characteristics · CPC title