CPC G01D 3/0365 (2013.01) [G01B 7/22 (2013.01); G01D 5/241 (2013.01); H05K 1/18 (2013.01); H05K 2201/09063 (2013.01)] | 15 Claims |
15. Method of determining displacement between a first fixation part and a second fixation part with a sensor assembly comprising a first mounting device, a second mounting device, a sensor device and a compensation sensor, the compensation sensor arranged to be restricted from mechanical deformation caused by relative displacement between the first fixation part and the second fixation part, the method comprising:
mounting the first mounting device to the first fixation part;
mounting the second mounting device to the second fixation part;
arranging in a sensor cavity a sensing part of the sensor device between the first mounting device and the second mounting device, the sensing part including a plurality of polymeric sensor layers comprising a first dielectric layer, the sensing part comprising a sensing zone;
arranging the compensation sensor comprising a compensation part, in the sensor cavity;
the method further comprising:
obtaining a sensor signal from the sensor device, wherein the sensor signal is indicative of stretching of the sensing zone;
obtaining a compensation signal from the compensation sensor;
determining a displacement parameter based on the sensor signal and the compensation signal.
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