POWERLESS TIME REFERENCE

摘要

According to an embodiment, a time reference device (100) is provided, which comprises a corrodible element (140), wherein a corrosion of the corrodible element (140) advances with advancing time, and a sensor (102) configured for providing a sensor signal, the sensor signal depending on a physical property of the corrodible element (140). The physical property of the corrodible element (140) changes with a corrosion of the corrodible element (140) and the physical property of the corrodible element (140) is at least one of an electrical property, a magnetic property, and an optical property. A barrier (150) may be provided for defining a permeability for a corrosive substance (160) to the corrodible element (140).

主权项

1. Time reference device comprising:
a corrodible element, wherein a corrosion of the corrodible element advances with advancing time; a sensor configured for providing a sensor signal, the sensor signal depending on a physical property of the corrodible element; wherein the physical property of the corrodible element changes with a corrosion of the corrodible element; and wherein the physical property of the corrodible element is at least one of an electrical property, a magnetic property, and an optical property.