Method, storage medium and electrical device for obtaining cycle of physiological signal

A piezoelectric device for obtaining a cycle a cycle time of a physiological signal comprising:

• a contact-type microphone configured for obtaining the physiological signal;
• a processor electrically coupled with the contact-type microphone;
• and
• a memory electrically coupled with the processor and the contact-type microphone and configured to store computerized instructions and, when executed by a processor, to cause the processor to perform a method, the method comprising:
• S1, receiving physiological signal values of the physiological signal, from the piezoelectric devices, comparing the received physiological signal values with a temporarily stored value, and reserving one of the physiological signal values or the temporarily stored value;
• S2, determining the temporarily stored value as a first extreme value if the temporarily stored value has not been replaced by the received physiological signal values when a reserving time reaches a preset time period;
• S3, restarting the steps of S1 and S2 to obtain a next extreme value;
• and
• S4, obtaining a time period from the first extreme value to the next extreme value, and determining the time period as the cycle time of the physiological signal;
• wherein the physiological signal comprises a respiratory signal and a heartbeat signal;
• the first extreme value and the next extreme value are defined as a maximum value or a minimum value in the preset time period;
• and the preset time period is shorter than the cycle time of the physiological signal.

A non-transitory computer storage medium configured to store computerized instructions and, when executed by a processor, to cause the processor to perform a method, the method comprising:

• S1, receiving physiological signal values of the physiological signal, from the piezoelectric devices, comparing the received physiological signal values with a temporarily stored value, and reserving one of the physiological signal values or the temporarily stored value;
• S2, determining the temporarily stored value as a first extreme value if the temporarily stored value has not been replaced by the received physiological signal values when a reserving time reaches a preset time period;
• S3, restarting the steps of S1 and S2 to obtain a next extreme value;
• and
• S4, obtaining a time period from the first extreme value to the next extreme value, and determining the time period as the cycle time of the physiological signal;
• wherein the physiological signal comprises a respiratory signal and a heartbeat signal;
• the first extreme value and the next extreme value are defined as a maximum value or a minimum value in the preset time period;
• and the preset time period is shorter than the cycle time of the physiological signal.