Patent ID: 8907283
Filing Date: 2014-12-09
Classification: G01J,G08B

Abstract:
1. A battery-operated object detecting device for detecting an object and the outputting a detection information signal, the object detecting device comprises: a detecting unit adapted to be driven by an electric cell mounted thereon; and a transmitting device driven by the electric cell in the detecting unit for transmitting wireless at least a low battery signal from the detecting unit and the detection information signal, the low battery signal being indicative of a reduction in voltage of the electric cell; wherein the detecting unit comprises a low battery detecting circuit built therein for detecting a low battery state, in which the voltage of the electric cell in the detecting unit is lower than a first reference signal, and wherein the transmitting device comprises a low battery determining circuit built therein for determining whether or not the voltage supplied from the electric cell is lower than a second reference value.