抄録
Recently, most of infants wear diapers in their daily life. Due to wearing a diaper, contact stimuli on skin causes dermatitis. The contact stimulus is measured by sensory evaluation. However, it is difficult to carry out sensory evaluation on infants. Therefore, a sensory system which can objectively evaluate the contact stimulus is demanded. In previous studies, we have developed a contact stimulus sensor using a polyvinylidene difluoride (PVDF) film and a strain gauge. However, influence of pressure distribution on contact stimulus feeling by human is not investigated. In this paper, a stimulation system of contact stimulus was developed in order to provide steady stimulus to human skin and sensor part. And a pressure distribution sensor is used as a contact stimulus sensor in order to investigate the influence of pressure distribution. In experiments, 4 kinds of diaper samples were evaluated by human sensory evaluation and sensor measurements. The sensor outputs were compared with human evaluated by human sensory evaluation and sensor measurements. The sensor outputs were compared with human evaluation values. From the results, it was found that a feeling of pressure is related to average pressure on the whole sensor, and a feeling of rubbing is related to degree of pressure concentration.
