Device for recognition of lifelessness of person on basis of pulse measurement or movement, particularly of hand, has optical sensor and evaluation unit, where optical sensor consists of emitter for emitting light on skin tissue

摘要

The device has an optical sensor (S1,Sn) and an evaluation unit (AW). The optical sensor consists of an emitter (H1,Hn) for emitting light on a skin tissue and a detector (B1,Bn) for receiving the light re-emitted from the skin tissue. The light with arbitrary wave lengths in a specified area of 520 nanometers to 600 nanometers is emitted from the emitter. A light emitting diode with dominant wavelengths from the specified area is provided as an emitter and a photodiode or phototransistor is provided as detector. The emitter and detector are arranged directly next to each other.