Wake flow bubble unit detection device

Abstract

The invention relates to a wake flow bubble unit detection device. The invention belongs to the technical field of ship wake flow bubble detection. The device comprises a receiving window, a receivinglens, a receiving detector, a box body cover plate, a box body, a laser, a transmitting lens, a transmitting window, a sealing system, a power supply system, an inclination angle mechanism, a delayer, a data acquisition system and an industrial personal computer. A laser emits pulsed light which is collimated by an emission optical system and then irradiates bubbles in wake flow, and then back scattered light is focused on a unit linear APD focal plane through a receiving optical system; the laser power supply outputs a Q-switched trigger pulse, and after a certain time delay, the trigger unit APD works, so that the laser echo and the detector work synchronously. Even if the light spot shape is expanded and distorted at the edge, the received light is basically not distorted, and the uniformity of the image surface of the detector is very high. In addition, the purpose of detecting different distances can be achieved by adjusting the position of the detector.

Description

technical field [0001] The invention relates to the technical field of ship wake bubble detection, and relates to a wake bubble unit detection device. Background technique [0002] Wake bubbles are inevitable when a ship is running. The laser active detection technology scheme is adopted for the bubbles generated by the wake of the ship, that is, the reflectivity of the bubble and the water body to the laser is different, and the reflectivity of the bubble is large, which will cause the laser to transmit in the seawater. , there will be a strong backscattering, so that the detector will output a pulse signal, the amplitude of which corresponds to the backscattering intensity, and the position and density of the bubbles can be judged respectively according to the position and amplitude of the pulse, which is The basis for realizing laser wake detection. Wake detection is of great significance for coastal defense and civilian use, so the research on the wake unit detection d...

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problems that the existing device has a large volume due to lack of modular design; the device has a complex optical system, lack of modular design, and poor stability and reliability. The present invention provides a wake bubble unit detection device. The invention provides the following technical solutions:

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