WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |

Search International and National Patent Collections
World Intellectual Property Organization
Machine translation
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/141718    International Application No.:    PCT/GB2011/000741
Publication Date: 17.11.2011 International Filing Date: 13.05.2011
G01V 15/00 (2006.01)
Applicants: ECOTEC SYSTEMS LTD [GB/GB]; Bruntingthorpe Industrial Estate Lutterworth Leicestershire LE17 5QZ (GB) (For All Designated States Except US).
PULHAM, Richard [GB/GB]; (GB) (For US Only).
GODDARD, Tristan [GB/GB]; (GB) (For US Only).
CHAMPION, Barry [GB/GB]; (GB) (For US Only).
SABIN, Barrie [GB/GB]; (GB) (For US Only).
AGRATECH LTD [GB/GB]; c/o Next Plc Desford Road Enderby Leicester LE19 4AT (GB) (For All Designated States Except US)
Inventors: PULHAM, Richard; (GB).
GODDARD, Tristan; (GB).
CHAMPION, Barry; (GB).
SABIN, Barrie; (GB)
Agent: PATEL, Nikesh, P.; A. A. Thornton & Co. 235 High Holborn London WC1V 7LE (GB)
Priority Data:
1008045.5 13.05.2010 GB
Abstract: front page image
(EN)An apparatus and method is provided for detecting perturbations in the local magnetic environment. The apparatus comprises: a capacitance device including a first and second capacitive plate, the second capacitive plate being separated from a magnet section of the first capacitive plate by a distance; and a means for receiving a magnetic element on the magnet section of the first capacitive plate, wherein movement between the magnet section of the first capacitive plate and the second capacitive plate indicates a change in capacitance. Means for calculating the capacitance of the capacitance device, and means for determining a change in capacitance may be provided and on the basis of the change in capacitance, it is judged whether a permanent magnet is near the capacitance device.
(FR)L'invention concerne un appareil et un procédé permettant de détecter des perturbations dans un environnement magnétique local. L'appareil comprend : un dispositif à capacitance comprenant une première et une seconde plaque capacitive, la seconde plaque capacitive étant séparée d'une section aimant de la première plaque capacitive par une certaine distance; et un moyen pour recevoir un élément magnétique sur la section aimant de la première plaque capacitive, un mouvement entre la section aimant de la première plaque capacitive et la seconde plaque capacitive indiquant un changement de capacitance. Des moyens de calcul de la capacitance du dispositif à capacitance et des moyens de détermination d'un changement de capacitance peuvent être utilisés et, en fonction d'un changement de la capacitance, on estime si un aimant permanent se trouve à proximité du dispositif à capacitance.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, 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.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)