Real-time transient pulse monitoring system and method

• US 6,639,538 B1
• Filed: 05/14/2002
• Issued: 10/28/2003
• Est. Priority Date: 05/14/2002
• Status: Expired due to Term

• Current Assignee: Bicameral LLC (IPValuation Partners, LLC)
• Original Assignee: SRI International, Inc.
• Inventors: Adamo, Richard C., Sechi, Paolo G.
• Primary Examiner(s): YOUNG, BRIAN K
• Application Number:
  US10/145,492
• Publication Number:
  US 20030214426A1
• Time in Patent Office: 532 Days
• Field of Search: 341/155, 341/161, 341/159, 341/160, 341/158
• US Class Current: 341/155
• CPC Class Codes: G01R 19/2509 Details concerning sampling, digitizing or waveform capturing
• CPC Class Codes: G01R 19/2513 Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
• CPC Class Codes: G01W 1/16 Measuring atmospheric potential differences, e.g. due to electrical charges in clouds measuring potentiels in general G01R
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

Described are a system and method for monitoring and characterizing a stimulus in order to detect transient phenomena. An analog signal represents the stimulus. Conversion circuitry receives the analog signal and continuously converts the analog signal into digital data. Digital circuitry continuously receives the digital data from the conversion circuitry and dynamically computes from the digital data a value that characterizes a parameter of the stimulus while the digital circuitry continuously receives new digital data from the conversion circuitry. The digital circuitry can be reconfigured to characterize a different parameter for the same type or for a different type of stimulus.

Claims

1. A system for characterizing a stimulus represented by an analog signal, the system comprising:

conversion circuitry continuously receiving the analog signal and converting the analog signal into digital data; and

digital circuitry in communication with the conversion circuitry to receive continuously the digital data from the conversion circuitry, the digital circuitry dynamically computing from the digital data a value that characterizes a parameter of the stimulus while the digital circuitry continuously receives new digital data from the conversion circuitry.

2. The system of claim 1 wherein the digital circuitry is in communication with a bus, and wherein the digital circuitry outputs the computed value over the bus while the digital circuitry continuously receives new digital data from the conversion circuitry.

3. The system of claim 1, wherein the characterized parameter is a first parameter, and wherein the digital circuitry is programmed to characterize the first parameter and is re-programmable to characterize a second parameter that is different than the first parameter.

4. The system of claim 3 wherein the stimulus is of a first type of stimulus and wherein the second parameter is associated with a different type of stimulus than the first type of stimulus.

5. The system of claim 1, wherein the characterized parameter is a peak amplitude of the stimulus.

6. The system of claim 1, wherein the characterized parameter is a peak energy of the stimulus.

7. The system of claim 1, wherein the conversion circuitry and the digital circuitry are provided on the same circuit board.

8. The system of claim 1 wherein the conversion circuitry and digital circuitry are provided in a computer system.

9. The system of claim 1, wherein the conversion circuitry and digital circuitry are provided on the same integrated circuit chip.

10. The system of claim 1, wherein the digital circuitry includes:

program memory storing a first program; and

a digital signal processor in communication with the program memory, the digital signal processor computing the value that characterizes the parameter as directed by the first program, and

wherein the program memory is re-programmable to store a second program that instructs the digital signal processor to compute a value that characterizes a different parameter than the parameter characterized according to the first program.

11. The system of claim 10, further comprising programmable logic in communication with the digital signal processor, the programmable logic computing a value that characterizes a second parameter as directed by the first program, the programmable logic being re-programmable by the digital signal processor as directed by the second program.

12. The system of claim 1 wherein the conversion circuitry comprises a signal conditioner that receives the analog signal, the signal conditioner modifying the analog signal to produce a modified analog signal having a particular voltage range.

13. The system of claim 1 further comprising self-test circuitry.

14. A system for characterizing a stimulus represented by an analog signal, the system comprising:

an analog-to-digital converter receiving the analog signal and converting the analog signal into digital data;

a processing unit dynamically computing from the digital data a value that characterizes a parameter of the stimulus; and

a memory buffer in communication between the analog-to-digital converter and the processing unit, the memory buffer continuously receiving new digital data from the analog-to-digital converter while the processing unit processes digital data received from the memory buffer to compute the value that characterizes the parameter of the stimulus.

15. The system of claim 14 wherein the processing unit includes a digital signal processor in communication with the memory buffer.

16. The system of claim 15 wherein the processing unit includes programmable logic in communication with the memory buffer to receive concurrently the same digital data that are received by the digital signal processor, the programmable logic and the digital signal processor dynamically computing, from the same digital data, values that characterize different parameters of the stimulus.

17. The system of claim 14 wherein a rate at which the memory buffer receives new digital data from the AID converter is less than a rate at which the processing unit obtains digital data from the memory buffer.

18. The system of claim 14 wherein the processing unit continuously obtains digital data from the memory buffer except while the processing unit is outputting a computed value.

19. The system of claim 14, wherein the characterized parameter is a first parameter, and wherein the processing unit is programmed to characterize the first parameter and is re-programmable to characterize a second parameter that is different than the first parameter.

20. The system of claim 19 wherein the stimulus is of a first type of stimulus and wherein the second parameter is associated with a different type of stimulus than the first type of stimulus.

21. A method of characterizing a stimulus represented by an analog signal, the method comprising:

continuously receiving digital data digitized from the analog signal representing the stimulus; and

dynamically computing from the continuously received digital data a value that characterizes a parameter of the stimulus while receiving new digital data digitized from the analog signal representing the stimulus.

22. The method of claim 21 further comprising converting the analog signal representing the stimulus into the digital data that are continuously received.

23. The method of claim 21 further comprising processing the continuously received digital data at a rate that is greater than a rate at which the new digital data are received.

24. The method of claim 21 further comprising storing, for subsequent processing, new digital data that are received while the computed value is being provided to a bus.