Patent ID: 9545214
Date: 2017-01-17
CPC Classifications: A61B

Claim:
1. A method, adopted by a sensing circuit of a heart rate meter, wherein the sensing circuit comprises a pulse sensor and a proximity sensor, the method comprising: when a proximity output signal of the proximity sensor indicates that a predetermined distance is not exceeded, determining the sensing circuit is close to a neighboring object; when a direct current (DC) output signal of the pulse sensor is less than a predetermined voltage, determining that the sensing circuit is direct contact to the neighboring object; when the sensing circuit is close to the neighboring object and is in direct contact to the neighboring object, determining that an electrocardiographic signal of the neighboring object measured by the pulse sensor is valid; when the electrocardiographic signal of the neighboring object measured by the pulse sensor is valid, recording the electrocardiographic signal, displaying the measured electrocardiographic signal, and/or determining whether an emergency has occurred based on the measured electrocardiographic signal when the sensing circuit is close to the neighboring object but not in direct contact with the neighboring object, the electrocardiographic signal measured by the pulse sensor is invalid; and when the sensing circuit is beyond the predetermined distance, detecting the neighboring object by the proximity sensor.