Pipeline diameter measurement instrument multipath displacement pulse optimization device based on FPGA and method
A technology of displacement pulse and caliper, which is applied in the direction of measuring devices, optical devices, instruments, etc., and can solve the problems of lack of optimal methods and calibration methods
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[0035] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0036] An FPGA-based multi-channel displacement pulse optimization device for pipeline caliper, such as figure 1 As shown, in this embodiment, it includes a pipeline caliper body, three mileage wheels, a signal acquisition module, an optical coupling isolation unit, and an FPGA central processing unit. The signal acquisition module includes 3 convex lenses, 3 rotary encoders, and 3 photosensitive elements. The rotary encoder adopts E6A2-CW3E, the optical coupling isolation unit adopts HCPL-053L, and the FPGA central processing unit adopts EP4CE15F17C8. There is a light source inside the pipe caliper body, and the three mileage wheels are evenly installed on the inner radial circumference of the pipe caliper body. Each mileage wheel shaft is equipped with a convex lens, a rotary encoder, and a photosensitive element. The sensor, photosens...
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