Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007107689 - ELECTRIC POTENTIAL SENSOR

Publication Number WO/2007/107689
Publication Date 27.09.2007
International Application No. PCT/GB2007/000490
International Filing Date 13.02.2007
IPC
G01R 29/12 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29Arrangements for measuring or indicating electric quantities not covered by groups G01R19/-G01R27/135
12Measuring electrostatic fields
G01R 19/00 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
CPC
A61B 5/25
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
25Bioelectric electrodes therefor
A61B 5/291
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
25Bioelectric electrodes therefor
279specially adapted for particular uses
291for electroencephalography [EEG]
G01R 19/0023
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
0023Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers
G01R 29/12
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
12Measuring electrostatic fields ; or voltage-potential
Applicants
  • UNIVERSITY OF SUSSEX [GB]/[GB] (AllExceptUS)
  • PRANCE, Robert [GB]/[GB] (UsOnly)
  • HARLAND, Christopher [GB]/[GB] (UsOnly)
Inventors
  • PRANCE, Robert
  • HARLAND, Christopher
Agents
  • ADDISON, Ann, B.
Priority Data
0605717.821.03.2006GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRIC POTENTIAL SENSOR
(FR) CAPTEUR DE POTENTIEL ELECTRIQUE
Abstract
(EN) The present invention provides an electric potential sensor (28) for the measurement of potentials non-invasively. The sensor comprises at least one detection electrode (12) arranged for capacitive coupling with a sample under test and for generating a measurement signal, and a sensor amplifier (14) adapted to receive the measurement signal as input and to supply an amplified detection signal as output. Input impedance enhancing means (12a, 32, 36, 38, 44) are included for providing a high input impedance to the sensor amplifier for increasing the sensitivity of the electrode to reduced electric potentials, and a discrete pre-amplifier stage (30) is arranged to co-operate with the sensor amplifier to reduce the input capacitance of the amplifier.
(FR) L'invention concerne un capteur de potentiel électrique (28) permettant de mesurer des potentiels de manière non invasive. Ce capteur comprend au moins une électrode de détection (12) placée pour un couplage capacitif avec un échantillon à tester et conçue pour générer un signal de mesure, et un amplificateur de capteur (14) conçu pour recevoir le signal de mesure en entrée et fournir en sortie un signal de détection amplifié. Des moyens d'augmentation d'impédance d'entrée (12a, 32, 36, 38, 44) sont destinés à fournir une impédance d'entrée élevée à l'amplificateur de capteur, de sorte à accroître la sensibilité de l'électrode aux potentiels électriques réduits. Un étage de préamplificateur discret (30) est conçu pour coopérer avec l'amplificateur de capteur afin de réduire la capacité d'entrée de ce dernier.
Latest bibliographic data on file with the International Bureau