Physiology signal sensing device
A physiology signal sensing device includes an elastic pad and a strain sensor element. The elastic pad is used for contact with a human body, and corresponds a blood vessel of the human body. The strain sensor element is disposed in the elastic pad and includes a conductive element. The conductive element deforms according to the vibration of the blood vessel, and the resistance value of the conductive element varies according to the strain of the conductive element.
1. A physiology signal sensing device, comprising:
an elastic pad used for contact with a human body and which deforms according to a vibration of a blood vessel of the human body;
an elastic strip, embedded into and in direct contact with the elastic pad, wherein the elastic strip deforms according to the vibration of the blood vessel;
a strain sensor element, disposed on the elastic strip, comprising:
a sensing body embedded into and in direct contact with the elastic pad; and
a conductive element, embedded into and in direct contact with the sensing body, having a variable resistance value, and
a pressing element, disposed on the elastic pad configured to press the elastic pad, comprising:
a cover disposed on the elastic pad;
a housing disposed on the cover; and
an elastic element, located between the housing and the cover;
wherein the conductive element deforms according to the vibration of the blood vessel, the strain of the conductive element corresponds to the elastic strip, and the resistance value of the conductive element varies according to the strain of the conductive element.
2. The physiology signal sensing device as claimed in claim 1 , wherein a curvature of the conductive element corresponds to the vibration of the blood vessel.
3. The physiology signal sensing device as claimed in claim 1 , further comprising:
a processing module electrically connected to the conductive element, wherein the processing module generates a physiology signal according to the resistance value, wherein the processing module further comprises a wheatstone bridge electrically connected to the conductive element, and the processing module detects the resistance value by using the wheatstone bridge; and
a display module electrically connected to the processing module, wherein the processing module controls the display module to display the physiology signal.
4. The physiology signal sensing device as claimed in claim 3 , further comprising a wireless transmission module electrically connected to the processing module, wherein the processing module controls the wireless transmission module to transmit a wireless signal according to the physiology signal.
5. The physiology signal sensing device as claimed in claim 1 , wherein the pressing element further comprises a retaining belt disposed on the housing.
6. A physiology signal sensing device, comprising:
an elastic pad used for contact with a human body and which deforms according to a vibration of a blood vessel of the human body;
an elastic strip embedded into and in direct contact with the elastic pad, wherein the elastic strip deforms according to the vibration of the blood vessel;
a strain sensor element, disposed on the elastic strip, comprising:
a sensing body embedded into and in direct contact with the elastic pad; and
a conductive element, embedded into and in direct contact with the sensing body, having a variable resistance value;
a pressing element, disposed on the elastic pad configured to press the elastic pad, comprising:
a cover disposed on the elastic pad;
a housing disposed on the cover; and
an elastic element, located between the housing and the cover; and
a processing module electrically connected to the conductive element,
wherein the conductive element deforms according to the vibration of the blood vessel, and the strain of the conductive element corresponds to the elastic strip, and the resistance value of the conductive element varies according to the strain of the conductive element, and
wherein the processing module generates a physiology signal according to the resistance value.
7. The physiology signal sensing device as claimed in claim 6 , wherein the processing module further comprises a wheatstone bridge electrically connected to the conductive element, and the processing module detects the resistance value by using the wheatstone bridge.