Diagnosis of the defective state of a bolometric detection array
US9581500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method of diagnosing the state of signal-forming chains of a detector including an array of detection bolometers, each chain comprising a bolometer, a circuit of stimulation, and a circuit forming a signal according to said stimulation, including forming an image of a substantially uniform scene on the array; applying at least first and second stimulations to the chains; reading the formed signals; and for each chain in a predetermined set, defining a neighborhood of chains; calculating coefficients of a polynomial interpolating the values of signals formed by said chain; calculating, for each chain of the neighborhood, coefficients of a polynomial interpolating the values of signals formed by said neighborhood chain; calculating an average and standard deviation of said coefficients of the neighborhood chains or of the set of neighborhood chains and said chain; and diagnosing if said chain is defective using the coefficients and the calculated average and standard deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.