Information device switching-on/switching-off device for life jacket, has switch indicator for automatic switching-on/switching-off of information device based on resistance variation, induction variation, capacitance variation

摘要

The device has a switch indicator (4) for automatic switching-on/switching-off of an information device based on a resistance variation, induction variation, capacitance variation, where the indicator is implemented as passive on-off switches. The indicator, as a foil circuit, has forms of induction loops or capacitor windings or resistance sensor. The indicator is attached as printed foil circuit at movable and stationary objects.