SG11201804495TA - Optical brake lining monitoring - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau 111111111111110 III OE III OE III II III 11111111111111111111111111111 RIII 1111111H (43) International Publication Date 29 June 2017 (29.06.2017) (10) International Publication Number WO 2017/108922 Al WIPO I PCT (51) International Patent Classification: B66B 5/00 (2006.01) (21) International Application Number: PCT/EP2016/082132 (22) International Filing Date: (25) Filing Language: (26) Publication Language: (30) Priority Data: 15202258.8 23 December 2015 (23.12.2015) EP (71) Applicant: INVENTIO AG [CH/CH]; Seestrasse 55, 6052 Hergiswil (CH). (72) Inventors: ROBIBERO, Vincent; 4 Nina Place, Ran- dolph, MA 07869 (US). KRAFT, Dave; 84 E Valley Brook Rd, Long Valley, NJ 07853 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KR KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). 21 December 2016 (21.12.2016) English English [Continued on next page] (54) Title: OPTICAL BRAKE LINING MONITORING (57) : A brake system (15) for a passenger transportation sys- tem (1) includes a brake lining (20, 21) and a brake surface (22a, 22b), wherein a gap (39) exists between the brake lining (20, 21) and the brake surface (22a, 22b) when the brake system (15) is in an open pos- ition. The brake system (15) includes also an optical monitoring sys- tem (40) and a processor (43). The optical monitoring system (40) has a light source (41) arranged to emit light towards at least one of the gap (39) and the brake lining (20, 21), and a light detector (42) ar- ranged in a light path of the light emitted by the light source (41). The light detector (42) generates an electrical signal as a function of impinging light. The processor (43) is coupled to the optical monitor- ing system (40) to receive the electrical signal and to generate a prede - termined indication if the signal indicates a value that is equal to or greater than a predetermined threshold value (Vmax). W O 20 171089 / 22 Al WO 2017/108922 Al 111 0 Declarations under Rule 4.17: Published: as to applicant's entitlement to apply for and be granted — with international search report (Art. 21(3)) a patent (Rule 4.17(ii))