Patent ID: 7945313

Claim:
A heart rhythm monitoring device for a vehicle, which determines whether a driver has an arrhythmia based on an electrocardiogram waveform having a waveform component that is strong with respect to noise and a waveform component that is not strong with respect to noise, comprising: a vehicle state determining portion that determines whether the vehicle is stopped; an electrode that is arranged on a steering wheel in a position where the driver grips the steering wheel; an electrocardiogram waveform obtaining portion that obtains a first electrocardiogram waveform from the electrode; and a signal processing and calculating portion that determines whether the heart rhythm of the driver is erratic based on the first electrocardiogram waveform, wherein when the vehicle state determining portion determines that the vehicle is not stopped, the signal processing and calculating portion determines whether the heart rhythm of the driver is erratic based on the waveform component that is strong with respect to noise in the first electrocardiogram waveform, and wherein when the vehicle state determining portion determines that the vehicle is stopped, a second electrocardiogram waveform is obtained and the signal processing and calculating portion determines whether the heart rhythm of the driver is erratic based on a waveform component other than the waveform component that is strong with respect to noise in the second electrocardiogram waveform.