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    • 13. 发明申请
    • SYSTEM AND METHOD FOR MONITORING OF AN OBJECT/STRUCTURE BY MEASUREMENT OF VIBRATIONS USING AN OPTICAL FIBER
    • WO2023047301A1
    • 2023-03-30
    • PCT/IB2022/058922
    • 2022-09-21
    • ENI S.P.A.
    • ZAMPATO, MassimoTUROLLA, AxelCARMINATI, StefanoPALMIERI, Luca
    • G01H9/00
    • System (1) and method for monitoring by optical fiber (3) for the measurement of vibrations an object /structure (2). The system comprises the optical fiber (3) associated with the object/ structure (2) and having one end connected to a circulator (4) and a terminated opposite end, a source (5) of symbols emitting sequence of NS input signals (σ i= [0,..,NS- 1] ) and which is configured to generate an input vector (s (τ) ) with Nc input signals (Sn (τ) n= [0,..,Nc-1] ), a multi-carrier OFDM modulation block (6) adapted to modulate a light beam (13) emitted by a laser source (12) by means of an OFDM modulating signal to determine a sensing signal (sIN(t)) with Nc subcarriers, said modulating signal OFDM being generated on the basis of the input vector (s(τ) ); the circulator (4) being adapted to send the sensing signal (sIN(t)) to the optical fiber (3) and to receive a backscattered signal SOUT (t); an OFDM demodulation block (19) which receives a second light beam of intensity proportional to said light beam (13) to demodulate the backscattered signal (SOUT (t)) determining an output vector (u(τ) ) with Nc output signals (un(τ) n= [0,..,Nc-1] ) which include backscattered symbols; a processing unit (20) that processes the output vector (u(τ)) and the input vector (s(τ)), on the basis of respective Nc reference vectors (R-n n= [ 0,.., Nc 1] ) of said optical fiber (3), generating a deformation vector (V(T)) of said optical fiber (3), said Nc reference vectors (R-n n=[0,..,Nc-1] ) being determined considering unperturbed conditions of said optical fiber (3).
    • 17. 发明申请
    • ACHROMATIC LUMINESCENT SOLAR CONCENTRATORS
    • WO2022079624A1
    • 2022-04-21
    • PCT/IB2021/059390
    • 2021-10-13
    • ENI S.P.A.
    • GILA, LilianaCACCIANOTTI, LucianoPROTO, Antonio Alfonso
    • H01L31/042E06B3/00H01L31/048H01L31/055
    • Achromatic luminescent solar concentrator (LSC) comprising: - a first sheet comprising a matrix of transparent material and at least one first photoluminescent organic compound having an absorption range from 400 nm to 550 nm, preferably from 420 nm to 500 nm, and an emission range from 500 nm to 650 nm, preferably from 520 nm to 620 nm and at least one second photoluminescent organic compound having an absorption range from 420 nm to 650 nm, preferably from 480 nm to 600 nm, and an emission range from 580 nm to 750 nm, preferably from 600 nm to 700 nm; - a second sheet comprising a matrix of transparent material and at least one third organic compound, optionally photoluminescent, having an absorption range from 550 nm to 750 nm, preferably from 570 nm to 700 nm, and an emission range from 700 nm to 900 nm, preferably from 740 nm to 850 nm. Said achromatic luminescent solar concentrator (LSC) can be advantageously used in various applications that require the production of electricity through the exploitation of light energy, in particular solar radiation energy such as, for example: building integrated photovoltaic (BIPV) systems; photovoltaic windows; greenhouses; photo-bioreactors; noise barriers; lighting; design; advertising; automotive industry. In addition, said achromatic luminescent solar concentrator (LSC) is particularly suitable for application in double glazing.