Patent ID: 11947734
Assignee: GOERTEK INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The apparatus according to claim 1, further comprising a buffer layer, wherein:
the buffer layer is configured to buffer one or more of the at least one second sensor from the deformation of the deformable portion;
the one or more second sensors comprises a second Wheatstone-bridge circuit and a second amplifier circuit;
an arm of the second Wheatstone-bridge circuit comprises a second strain-sensitive element, and the second strain-sensitive element is attached to the buffer layer at a side away from the deformable portion;
the second amplifier circuit comprises a second operational amplifier, an inverting input terminal and a non-inverting input terminal of the second operational amplifier are coupled to two output terminals, respectively, of the second Wheatstone-bridge circuit, and an output terminal of the second operational amplifier is coupled to another input terminal of the comparator; and
the second signal comprises a signal outputted from the output terminal of the second operational amplifier.