Abstract
A personal care robot has safety-related functions like as a wireless approach warning function or an emergency stop function. These functions have to keep safe in used environment. Some of these functions use wireless communication system. In this paper, we assessed safety of a function using wireless communication system by using a wireless approach system as a case study. We have examined safety of the system against electromagnetic propagation and electromagnetic interference as hazards. The system has not enough safety against both hazards. These hazards are common risk for safety-related functions using wireless communication system.
