Acoustic sensor and acoustic sensor system
First Claim
1. An acoustic sensor comprising:
- a base including a support and a first film unit supported by the support, the first film unit being flexible; and
a first strain sensing element provided on a first surface of the first film unit, the first strain sensing element including a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer, an acoustic wave being transmitted to the first film unit via a first transmitting material, the first transmitting material being in contact with the first film unit, an electric resistance between the first magnetic layer and the second magnetic layer being variable in accordance with the acoustic wave.
1 Assignment
0 Petitions
Accused Products
Abstract
According to one embodiment, an acoustic sensor includes a base and a first strain sensing element. The base includes a support and a first film unit supported by the support. The first film unit is flexible. The first strain sensing element is provided on a first surface of the first film unit. The first strain sensing element includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer. An angle between a magnetization of the first magnetic layer and a magnetization of the second magnetic layer is variable by an acoustic wave. The acoustic wave is transmitted to a first film unit by a first transmitting material in contact with the first film unit.
-
Citations
26 Claims
-
1. An acoustic sensor comprising:
-
a base including a support and a first film unit supported by the support, the first film unit being flexible; and a first strain sensing element provided on a first surface of the first film unit, the first strain sensing element including a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer, an acoustic wave being transmitted to the first film unit via a first transmitting material, the first transmitting material being in contact with the first film unit, an electric resistance between the first magnetic layer and the second magnetic layer being variable in accordance with the acoustic wave. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22)
-
-
20. An acoustic sensor comprising:
-
a base including a support and a first film unit supported by the support, the first film unit being flexible; a first strain sensing element provided on a first surface of the first film unit, the first strain sensing element including a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer; and a first transmitting material in contact with the first film unit and configured to transmit an acoustic wave to the first film unit. - View Dependent Claims (23, 24, 25, 26)
-
Specification