The Human Body Impedance Model for Assessing the Performance of Capacitance-Sensing Based Active Injury Mitigation Systems for Table Saws

Over the past few years, UL has been conducting a multi-phased research program focused on developing performance requirements and a practical testing methodology for table saw safety standards to help address finger injuries due to contact with the blade. The first phase of the research concentrated on understanding the potential scenarios that might lead to a hazardous condition for table saw users and to suggest key parameters that could help define performance requirements. This research lead to a recommendation for performance requirements consisting of a defined relationship between approach velocity (speed of finger at a specified angle relative to table/blade) and depth of finger cut.