SG11201806959UA - A sensor for load measurement - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 24 August 2017 (24.08.2017) WIPO I PCT (10) International Publication Number WO 2017/142486 Al 111111111111110111011111111111010111110111010111110101111111011111111111111110111111 W O 20 17 / 142486 Al (51) International Patent Classification: G01L 1/16 (2006.01) H01L 41/083 (2006.01) H01L 41/053 (2006.01) B61L 1/04 (2006.01) (21) International Application Number: PCT/SG2017/050075 (22) International Filing Date: 17 February 2017 (17.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201601240X 19 February 2016 (19.02.2016) SG (71) Applicant: NATIONAL UNIVERSITY OF SINGA- PORE [SG/SG]; 21 Lower Kent Ridge Road, Singapore 119077 (SG). (72) Inventors: ZHANG, Shanli; c/o National University of Singapore, Faculty of, Engineering, Department of Civil and Environmental Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). KOH, Chan Ghee; c/o Na- tional University of Singapore, Faculty of Engineering, De- partment of Civil and Environmental Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). KUANG, Sze Chiang Kevin; c/o National University of Singapore, Faculty of Engineering, Department of Civil and Environmental Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). (74) Agent: FOO, Chee Hiong, Ricky; Marks & Clerk Singa- pore LLP, Tanjong Pagar, P 0 Box 636, Singapore 910816 (SG). (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). Declarations under Rule 4.17: — of inventorship (Rule 4.17(iv)) Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) = (54) Title: A SENSOR FOR LOAD MEASUREMENT 100 103 108 106a, 106b 104 200 102 YT FIG. lb (57) : A sensor (103) for load measurement is disclosed, which comprises at least one sensing portion (200) which includes a piezoelectric sensor and at least one sliding layer arranged to at least partially encapsulate the piezoelectric sensor; and at least one non-sensing portion (104) arranged adjacent to the sensing portion, wherein in use, a force applied on the sensor causes the sensing portion to be actuated to generate a voltage corresponding to the applied force, and wherein the sliding layer is configured to enable lateral movement of the piezoelectric sensor when the force is applied to protect the piezoelectric sensor against lateral stretching, and the non-sensing portion is configured to transmit horizontal force component of the applied force to a support structure on which the sensor is to be arranged. An associated sensor device is also disclosed.