Abstract
The risk of overexertion injury caused by patient handling and movement activities causes chronic pain and severe social issues among the nursing force. The accurate recognition of patient handling activities (PHA) is the first step to reduce injury risk for caregivers. In this paper, we propose a novel solution comprising a smart footwear device and an action manifold learning framework to address the challenge. The wearable device, called Smart Insole, is equipped with arich set of sensors and can provide an unobtrusive approachto obtain and characterize the action information of patienthandling activities. Our proposed action manifold learning(AML) framework extracts the intrinsic signature structure byprojecting raw pressure data from a high-dimensional inputspace to a low-dimensional manifold space. We performeda pilot study with eight subjects including eight commonactivities in a nursing room. The experimental results showthe overall classification accuracy achieves 86.6%. Meanwhile, the qualitative profile and load level can also be classified withaccuracies of 98.9% and 88.3%, respectively.
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