EP 1012626 A2 20000628 - METHOD FOR DETECTION OF OBJECTS USING OPTICAL AND OPTOELECTRONIC MEANS
Title (en)
METHOD FOR DETECTION OF OBJECTS USING OPTICAL AND OPTOELECTRONIC MEANS
Title (de)
VERFAHREN ZUR DETEKTION VON OBJEKTEN UNTER BENUTZUNG VON OPTISCHEN UND OPTOELEKTRONISCHEN MITTELN
Title (fr)
PROCEDE DE DETECTION ET SYSTEMES OPTIQUES ET OPTOELECTRONIQUES
Publication
Application
Priority
- RU 9900214 W 19990629
- RU 98112379 A 19980703
Abstract (en)
[origin: WO0002062A2] Invention relates to the field of optical detection and ranging, strictly to types of detection and recognition of a type of object with using of TV-methods of signals' identification and can be used within creating of burglar alarm systems. The reached technical result is object detection within disturbing signals and signaling organization of their appearance in a mode, decreasing possibility of object misdetection, caused by human factor - operator's fatigue. Method is based on sounding of controlled space volume by scanning impulse laser emission, receipt of optical image signals from the ordered distance, transduction of the received image signals into videosignal, threshold selection for elimination of background image, as well as on the fact, that sounding of space value is carried out with frequency, equal to f1/n, and emissed impulses subsequence is coded by on-off keying with frequency ff/m, f1 and ff are line and frame frequencies accordingly of the used TV method of signals transduction, n and m - natural numbers, fulfilling the terms n</=f1/ff, 2</=m</=ff/2, reveal videosignals, correlated with a code of on-off keying of emissed impulse subsequence, and form alarm signal automatically, and after transduction of videosignals into optical image - brightness twinkle of TV screen is fixed out with the help of operator, with a frequency of on-off keying.
IPC 1-7
IPC 8 full level
G01S 17/02 (2006.01); G01S 17/04 (2020.01); G01S 17/10 (2006.01); G01S 17/18 (2020.01); G01S 17/89 (2020.01)
CPC (source: EP US)
G01S 17/04 (2020.01 - EP); G01S 17/18 (2020.01 - EP); G01S 17/89 (2013.01 - EP US)
Citation (search report)
See references of WO 0002062A2
Designated contracting state (EPC)
BE DE ES FR GB GR IT NL SE
DOCDB simple family (publication)
WO 0002062 A2 20000113; WO 0002062 A3 20000420; WO 0002062 A9 20000727; EP 1012626 A2 20000628; RU 2133485 C1 19990720
DOCDB simple family (application)
RU 9900214 W 19990629; EP 99935195 A 19990629; RU 98112379 A 19980703