Sensor system and methods for the capacitive measurement of electromagnetic signals having a biological origin
First Claim
1. A method for minimizing the influence of movement artefacts to measure electromagnetic signals having a biobiological origin, comprising the following steps:
- fitting a sensor system or a measuring device on a measurement object,coupling an electrical alternating signal into the measurement object,evaluating the coupled in alternating signal in order to determine the electrode capacitance of the electrode device of the sensor system, or the electrode capacitance of the electrode devices of the measuring device, andtaking account of the determined electrode capacitance of the electrode devices when evaluating the measurement signals of the sensor system or of the measuring device, wherein the relative temporal change in the electrode capacitance of the electrode device of the sensor system or of the measuring device is taken into account, a movement signal of the electrode device relative to the measurement object is derived from the relative temporal change in the electrode capacitance, and the interfering movement artefacts superposed on the electromagnetic signals having a biobiological origin are compensated by means of the determined movement signal.
7 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a sensor system and several method for the capacitive measurement of electromagnetic signals having a biological origin. Such a sensor system comprises a capacitive electrode device (10), an electrode shielding element (20) which surrounds the electrode device (10) at least in part in order to shield the same (10) from interfering external electromagnetic fields, and a signal processing device (30) for processing electromagnetic signals that can be detected by means of the electrode device (10). According to the invention, additional shielding means (21) three-dimensionally surround the electrode device (10) and the electrode shielding element (20) at least in part in order to block out interfering external electromagnetic fields. The changes in the electrode capacity of the capacitive sensor system are determined with the aid of several methods which particularly use the inventive sensor system in order to take said changes into account when the test signals are evaluated.
-
Citations
31 Claims
-
1. A method for minimizing the influence of movement artefacts to measure electromagnetic signals having a biobiological origin, comprising the following steps:
-
fitting a sensor system or a measuring device on a measurement object, coupling an electrical alternating signal into the measurement object, evaluating the coupled in alternating signal in order to determine the electrode capacitance of the electrode device of the sensor system, or the electrode capacitance of the electrode devices of the measuring device, and taking account of the determined electrode capacitance of the electrode devices when evaluating the measurement signals of the sensor system or of the measuring device, wherein the relative temporal change in the electrode capacitance of the electrode device of the sensor system or of the measuring device is taken into account, a movement signal of the electrode device relative to the measurement object is derived from the relative temporal change in the electrode capacitance, and the interfering movement artefacts superposed on the electromagnetic signals having a biobiological origin are compensated by means of the determined movement signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification