Electric device and tire condition monitoring apparatus

Abstract

A tire condition monitoring apparatus having a transmitter and a receiver is disclosed. The transmitter incorporates a battery having a positive electrode and a negative electrode. The transmitter wirelessly transmits a signal including data representing the condition of a tire of a vehicle using electromotive force produced by the battery. The receiver receives the signal from the transmitter and processes the signal. The transmitter includes a refresh circuit that performs refresh by forcibly supplying an electric current to the positive and negative electrodes of the battery. The transmitter measures the electromotive force of the battery after such refresh. If the electromotive force of the battery has not been recovered, the transmitter sends a notification signal indicating insufficiency of the electromotive force of the battery to the receiver. In response to the notification signal, the receiver announces insufficient capacity of the battery to the driver of the vehicle by means of a warning device.

Dependencies are inferred from the claim text.