Contact type vibration sensor for long-term monitoring of breathing sound

The invention belongs to the technical field of sensors, and discloses a double-layer electret vibrating diaphragm with a supporting structure, which comprises a first rubber pad, a first guide groove, a chute and a separation mechanism are annularly formed in the top of the outer surface of the first rubber pad at equal angles, and the outer surface of the first rubber pad is sleeved with a first connecting ring and a first tension spring. And convex columns are annularly and fixedly connected to the bottom of the inner cavity of the first tension spring at equal angles. Through cooperation of structures such as a convex column, an inclined groove and a second rubber mat, the device has the effect of preventing viscose from affecting a vibrating membrane piece, the second rubber mat is attached to the body of a person, then the person pulls the first rubber mat towards the side away from the human body and rotates, and the vibrating membrane piece is placed on the first rubber mat. And then the convex column