Piston type optical fibre grating sonic device
A fiber grating and hydrophone technology, which is applied in instruments, metering and measuring devices by measuring the changing force of optical properties of materials when they are stressed, can solve the problems of affecting signal detection, discomfort, and limited static pressure. Increased sensitivity, increased height, and reduced volume effects
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0033] like figure 1 and figure 2 as shown, figure 1 The structural sectional view of the piston type fiber grating hydrophone provided by the present invention, figure 2 It is a side sectional view of the middle part of the piston-type fiber grating hydrophone provided by the present invention.
[0034] The fiber grating hydrophone includes: a support cylinder 10 as the main body of the hydrophone; a protective sleeve 20 sleeved on the surface of the support cylinder 10 for protecting the structure inside the support cylinder 10 and the support cylinder 10; The first piston and the second piston 40 inside the cylinder 10 are used to sense the pressure and generate displacement along the normal direction of the pisto...
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