Development of an Immunity Test System With a Pseudo Biosignal Generator for Wearable Devices and Application to the ESD Test of an Artificial Hand

In this study, we developed an immunity test system for wearable devices used for healthcare or assistance to people with disabilities. The immunity test system consists of a pseudo biosignal generator for generating various vital signals such as electrocardiogram or electromyography and a bioequivalent gel phantom for simulating a part of the human body. As an application to the electrostatic discharge (ESD) immunity test for a myoelectric artificial hand, we used the pseudo biosignal generator to generate various myoelectric signals and confirmed a high correlation between the generated and the real myoelectric signals. We then applied this system to the IEC61000-4-2 specified ESD test. Through a comparison between the ESD test results by using the immunity test system and the result for a real human body, we found a high similarity between them, which suggests that the proposed immunity test system is feasible for various immunity tests in wearable devices.