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1. (WO2010082892) A MULTI PURPOSE CAPACITIVE SENSOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/082892 International Application No.: PCT/SE2010/000001
Publication Date: 22.07.2010 International Filing Date: 04.01.2010
IPC:
H03K 17/955 (2006.01) ,G08B 13/26 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
94
characterised by the way in which the control signals are generated
945
Proximity switches
955
using a capacitive detector
G PHYSICS
08
SIGNALLING
B
SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
13
Burglar, theft, or intruder alarms
22
Electrical actuation
26
by proximity of an intruder causing variation in capacitance or inductance of a circuit
Applicants:
WERN, Lars Åke [SE/SE]; SE
Inventors:
WERN, Lars Åke; SE
Agent:
KURT LAUTMANN PATENTBYRÅ AB; BOX 245 S-691 25 Karlskoga, SE
Priority Data:
0900033-213.01.2009SE
Title (EN) A MULTI PURPOSE CAPACITIVE SENSOR
(FR) CAPTEUR CAPACITIF POLYVALENT
Abstract:
(EN) The invention relates to a multi purpose capacitive sensor which is suitable for indicating close proximity of a person to a surface along a large-size truck as well as along a medium-size painting. A voltage measuring device (1) is provided with a signal ground (2) connected to a first pole (3) of an oscillating voltage source (4) that has a second pole (5) connected to earth (6) and that is connected to an input (7) of the voltage measuring device via a voltage divider (8) with a capacitive series link (9) arranged between said input and earth and a shunt link (10) arranged between said input and said signal ground. According to the invention, said signal ground is connected to electrically conductive means extended along said surface and said oscillating voltage source is connected to earth via a second voltage divider (11) in which a capacitive series link (12) is arranged between earth and said second pole and has an impedance of at least the same order of magnitude as the impedance of a capacitive shunt link (13) provided by the capacitance between said signal ground and earth.
(FR) L'invention concerne un capteur capacitif polyvalent conçu pour indiquer la proximité d'une personne vis-à-vis d'une surface le long d'un camion de grande taille ainsi que d'une peinture de taille moyenne. Un dispositif de mesure de tension (1) comprend une terre de signalisation (2) reliée à un premier pôle (3) d'une source de tension oscillante (4) qui comporte un deuxième pôle (5) relié à la terre (6) et qui est reliée à une entrée (7) du dispositif de mesure de tension par le biais d'un diviseur de tension (8); une liaison série capacitive (9) est placée entre ladite entrée et la terre et une liaison de dérivation (10) est placée entre cette entrée et la terre de signalisation. Selon l'invention, la terre de signalisation en question est reliée à un système conducteur s'étendant le long de la surface considérée, et la source de tension oscillante est reliée à la terre par le biais d'un deuxième diviseur de tension (11) comprenant une liaison série capacitive (12) placée entre la terre et le deuxième pôle, possédant une impédance ayant au moins le même ordre de grandeur que l'impédance d'une liaison de dérivation capacitive (13) fournie par la capacité entre la terre de signalisation et la terre.
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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 (ARIPO) (BW, GH, GM, KE, 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 (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, 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)
Also published as:
US20120019264