Sound pressure sensor
A sound pressure sensor and sensing layer technology, applied in instruments, measuring ultrasonic/sonic/infrasonic waves, measuring devices, etc., can solve the problem of insufficient sensitivity of the sound pressure sensor, achieve moderate overall stiffness, improve sensitivity, and ensure sensitivity. Effect
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[0033] Such as Figure 1-Figure 4 As shown, the first embodiment of the present invention proposes a sound pressure sensor, which includes: a substrate 1, a sensing layer 2 and an elastic layer 3; the first end of the substrate 1 is provided with a recessed space toward the opposite second end 11. The sensing layer 2 is laminated with the elastic layer 3, and covers the first end of the substrate 1 and is connected to the substrate 1; wherein, the sensing layer 2 takes the center point as the initial division point , evenly divided into more than or equal to 2 sub-sensing layers 20, there is a preset distance between two adjacent sub-sensing layers 20, and the sensing layer 2 can drive the elastic layer 3 to the The deformation in the concave space 11 of the substrate 1 converts the acoustic wave signal into an electrical signal.
[0034] Specifically, the substrate 1 can be rigid, for example, the substrate 1 can be a glass substrate, or the substrate 1 can be elastic, for e...
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