SG11201809810SA - Method of operation of a fail-safe solid state relay - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :::` , 11111110111101110111111111111111111111001010111101111011101111111111011110111111 Organization International Bureau (10) International Publication Number i (43) International Publication Date .....•\"\"- WO 2017/205897 Al 07 December 2017 (07.12.2017) WIP0 I PCT (51) International Patent Classification: (72) Inventors: STUCKEY, David Martin; 12A Harrison HO1H 47/18 (2006.01) HO3K 17/28 (2006.01) Crescent, Hawthorn, Victoria 3122 (AU). SEMKOW, (21) International Application Number: Marc David; 5358 Moreland Drive, Burnaby, BC V5G 1Z8 (CA). OWENS, Marie Lise; 11245 Sunset Cove Rd, Half- PCT/AU2017/000126 moon Bay, BC VON 1Y2 (CA). EKONANTO, Heti; Are- (22) International Filing Date: man, RT/RW 006/006 Desa Tugu, Kecamatan Cimanggis, 05 June 2017 (05.06.2017) Kota Depok, Provinsi Jawa Barat 16951 (ID). GRAHAM, Brent; 880 Mary Road, Gabriola Island, British Columbia, (25) Filing Language: English VOR 1X3 (CA). MAURO, David J.; 11146 Scarborough (26) Publication Language: English Drive, North Delta, BC V4C 7R2 (CA). FARNSCHLAED- (30) Priority Data: ER, Udo Wilhelm; 16 Bayview Culver Street, Gardens, 8001 Cape Town (ZA). STRIKE, Michael Anthony; 53 2016902175 04 June 2016 (04.06.2016) AU Grantleigh Drive, Darley, Victoria 3340 (AU). SMART, (71) Applicant: DAVID STUCKEY INVESTMENTS PTY Alastair Malcolm; 373 Balwyn Road, Balwyn North, Vic- LTD [AU/AU]; C/- Pitcher Partners, Level 19, 15 William toria 3104 (AU). SUMMONS, Keith Malcolm; 5 Henry Street, Melbourne, VIC 3000 (AU). Street, Balwyn, Victoria 3103 (AU). (54) Title: METHOD OF OPERATION OF A FAIL-SAFE SOLID STATE RELAY 1 .10 70 R.,..r ..... B.,..- si2- Display A Display D . .sw. = s „ p• am.. 20 40 Controller D Switches D • Controller Switches i Relay Control - A A 60 iRlugtoard i — asel Ccnil° y'oltaqe • i — 30 ' Timer n - ,, NO NC / 1 - Timer.. ' '''''' Svatch n NO Swach Sontch n NC Syy.tch -q...i. 50 / - Timer 2 ,...-sti. - No Switch 2 NC Soitch - _ sera - Tinier I — eta,, NO Switch 1 NC Switch 1 —r \"'-' ,...., Figure I ...._ . . ... Il (57) : A method for operating a fail-safe programmable solid-state relay, the method comprising the steps of performing a set of IN self-tests at an initial start-up and cyclically during the powered state of the solid-state relay, wherein a self-test comprises continuously 01 of detecting and comparing a state of the at least one switch with an expected state therefor and wherein if any self-test within the set I4 detects an unexpected state, substantially simultaneously therewith a failure flag is set in a non-volatile memory and the at least one 0 switching circuits are set to a safe or default state; setting an integrity flag and an integrity count flag within the memory when all self- ei --..... tests in the set are passed; and reading the failure flag from the memory at any subsequent start-up, wherein if the failure flag is not IN set, the integrity count flag is read and a set of self-tests is performed. 1-1 0 ei O [Continued on next page] WO 2017/205897 Al MIDEDIMOMOIDEIROIDEM00101011MEIMOIRVOIMIE (74) Agent: HOULIHAN , Elizabeth Eldred; Houlihan2, Lev- el 1, 70 Doncaster Road, Balwyn, North Victoria 3104 (AU). (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, KH, 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). Published: — with international search report (Art. 21(3))