Apparatus and method for monitoring and controlling detection of stray voltage anomalies

• US 9,666,057 B2
• Filed: 08/18/2015
• Issued: 05/30/2017
• Est. Priority Date: 12/23/2004
• Status: Active Grant

• Current Assignee: Osmose Utilities Services Incorporated (Osmose Holdings Incorporated)
• Original Assignee: Power Survey LLC
• Inventors: Kalokitis, David, Schultz, Leonard Joshua, Paragano, Vincent, Polyzois, Christos Alkiviadis
• Primary Examiner(s): Hunnings, Travis
• Application Number:
  US14/829,124
• Publication Number:
  US 20150356854A1
• Time in Patent Office: 651 Days
• CPC Class Codes: G01C 7/04 involving a vehicle which moves along the profile to be traced
• CPC Class Codes: G01R 19/0007 Frequency selective voltage or current level measuring measuring frequency G01R23/00; testing attenuation in line transmission systems H04B3/48; monitoring testing in transmission systems H04B17/00
• CPC Class Codes: G01R 19/155 Indicating the presence of voltage
• CPC Class Codes: G01R 29/0814 Field measurements related to measuring influence on or from apparatus, components or humans EMC, EMI and similar testing in general G01R31/001, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
• CPC Class Codes: G01R 29/12 Measuring electrostatic fields or voltage-potential
• CPC Class Codes: G08B 21/182 Level alarms, e.g. alarms responsive to variables exceeding a threshold

Abstract

Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field.

Claims

1. An apparatus for identifying a hazardously energized object, the apparatus comprising:

a motor vehicle configured to drive along a patrolled environment;

one or more sensor probes, coupled to the motor vehicle, that detect an electric field proximate the motor vehicle and provide an analog signal corresponding to the electric field as the motor vehicle moves past a potentially hazardously energized object,

a signal converter that generates a digital signal from the analog signal;

a processor configured to process the digital signal at the fundamental frequency or its harmonics pertaining to the hazardously energized object and to provide a second signal representing a magnitude of the electric field at the desired frequency; and

a display configured to display a change in the form of a rise, peak and fall in the digital signal over time as the motor vehicle performs a movement along the patrolled environment, the change indicating that a hazardously energized object is passed near-field, approximately ten to fifty feet away from the energized object.

2. The apparatus of claim 1, wherein the signal converter is an analog to digital converter that provides a transformation of the analog signal, the transformation comprising a plurality of time domain samples, each sample representing magnitude of the electric field.

3. The apparatus of claim 2, further comprising:

the processor being configured to filter the plurality of time domain samples according to a desired frequency pertaining to a hazardously energized object,

wherein the apparatus further comprises a computer to receive the second signal and to provide an indication of strength of the electric field at the desired frequency.

4. The apparatus of claim 3, wherein the plurality of time domain samples are subject, by the processor, to a filter to yield a frequency domain representation of the plurality of time domain samples.

5. The apparatus of claim 4, wherein the processor applies the filter on most recent digitized signals at a rate sufficient to produce a continuous output proportional to strength of the electric field.

6. The apparatus of claim 5, wherein the processor produces a continuous pitch audio tone proportional to a strength of the electric field.

7. The apparatus of claim 6, wherein the processor converts the plurality of time domain samples to a logarithmic scale.

8. The apparatus of claim 1, further comprising:

a support frame for mounting the one or more sensor probes to the motor vehicle.

9. The apparatus of claim 1, further comprising:

an audio indicator, coupled to the display, that emits an audio signal corresponding to a rise, peak and fall of the digital signal.

10. The apparatus of claim 9, further comprising:

a computer for capturing the rise, peak and fall to gather additional information to review a potentially hazardous object.

11. A method for identifying a hazardously energized object, the method comprising:

moving a motor vehicle coupled with one or more sensor probes that detect an electric field and provide an analog signal corresponding to the electric field as the motor vehicle moves past a potentially hazardously energized object;

converting the analog signal into a digital signal;

processing the digital signal at the fundamental frequency or its harmonics pertaining to the hazardously energized object and providing a second signal representing a magnitude of the electric field at the desired frequency; and

displaying a change in the form of a rise, peak and fall in the second signal over time as the motor vehicle performs a movement along a patrolled environment, the change indicating that a hazardously energized object is passed near-field approximately ten to fifty feet away from the energized object.

12. The method of claim 11, further comprising:

digitizing the analog signal to provide a transformation of the analog signal, the transformation comprising a plurality of time domain samples, each sample representing magnitude of the electric field.

13. The method of claim 12, further comprising:

filtering the plurality of time domain samples according to a desired frequency pertaining to a hazardously energized object; and

providing an indication of the magnitude of the electric field at the desired frequency.

14. The method of claim 13, further comprising applying a filter to the plurality of time domain samples to yield a frequency domain representation of the plurality of time domain samples.

15. The method of claim 14, further comprising applying the filter on most recent digitized signals at a rate sufficient to produce a continuous output proportional to strength of the electric field.

16. The method of claim 15, further comprising producing a continuous audio tone proportional to strength of the electric field.

17. The method of claim 16, further comprising converting the plurality of time domain samples to a logarithmic scale.

18. The method of claim 11, further comprising:

mounting the one or more sensor probes to the motor vehicle via a support frame.

19. The method of claim 11, further comprising emitting a continuous audio signal with variable tone corresponding to the rise, peak and fall of the digital signal.

20. The method of claim 19, further comprising capturing the rise, peak and fall to gather additional information to review a potential hazardously energized object.