A measuring device for cardiopulmonary state comprises a sensor and a control module. The sensor comprises a substrate and a coil arranged on the substrate.
The coil is configured to transmit a first electromagnetic signal towards the part to be measured, and at least receive the second electromagnetic signal generated by the induction of the first electromagnetic signal to generate an induction signal. The control module is coupled to the coil.
The control module includes a signal generating unit configured to provide an AC signal to the coil, a filtering unit coupled to the coil, and a processing unit.
The filtering unit has at least a first filtering frequency band and a second filtering frequency band. The induction signal is at least divided into a first part and a second part after passing through the filtering unit. The processing unit calculates at least one feature signals of the state of the subject’s heart or lung according to at least one of the first part and the second part. |