Abstract

Force measurement plays an important role in securing safety in the nursing care field due to the requirement of human contact and interaction such as lifting up human. Particularly, it is possible to perform delicate operation to the human by detecting a minute force such as delicate balance and contact of a human. Conventionally, we have realized a load sensor using quartz crystal resonator (QCR) with a measurement range of the order of 106. However, the conventional QCR load sensors were limited only to the load measurement. In this paper, 3 axis force sensor using QCR load sensor was proposed in order to expand the application of the QCR load sensor. We also conducted the calibration of the force characteristic of the fabricated QCR force sensor.

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