Arc detection architecture based on correlation for circuit breakers
CA 2287415 A1 · Owner: Daum, Wolfgang · Inventors: Daum, Wolfgang; Staver, Daniel Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low cost mixed analog digital application specific integrated circuit (ASIC) includes a standard central processing unit (CPU) programmed to execute a correlation function for arc detection. Use of a standard CPU is possible because need for digital fourier analysis is eliminated by the ASIC architecture. The ASIC includes a power supply configured to be coupled to an AC power line for supplying power to the ASIC components and, further includes a current sensor coupled to a current-carrying conductor for generating a signal representative of current in the conductor. A first analog-to-digital converter (ADC) coupled in, series with the current sensor has its output coupled to a central, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.