Calibration device and method for a laser cloud particle imager

Abstract

The invention discloses a calibration device for a laser cloud particle imager, which includes an electric translation platform, an electric lifting platform, a multi-axis displacement platform, a DC motor, a glass-carrying disc and calibration glass beads, the table top of the electric translation platform and the electric lifting platform. The bottom surface of the stage is fixedly connected, the tabletop of the electric lift table is fixedly connected with the bottom surface of the multi-axis translation stage, the tabletop of the multi-axis translation stage is fixedly connected with the DC motor through the adapter plate, and the shaft of the DC motor is fixedly connected with the glass-carrying disk, and the calibration glass The beads are bonded to the glass-carrying disc, and the motorized translation stage, motorized lift table and DC motor are connected to the computer through cables. The invention also discloses a calibration method of the laser cloud particle imager. The present invention utilizes calibration glass beads of standard size to simulate cloud particles as realistically as possible, cooperates with a multi-dimensional combined translation platform to precisely adjust the median comparison voltage of the calibrated laser cloud particle imager and the magnification of the imaging optical system to measure the particle size of various particles. True imaging depth of field.

Description

technical field [0001] The invention relates to the technical field of meteorological airborne detection, in particular to a calibration device and method for a laser cloud particle imager. Background technique [0002] The laser cloud particle imager can be used to directly image cloud droplet particles, and can measure the corresponding particle size spectrum, calculate water content and number concentration and other parameters, and its measurement data is of great importance for studying the physical process of cloud precipitation and guiding weather modification operations effect. The laser cloud particle imager uses a red semiconductor laser as the light source, and a 64-element one-dimensional linear array photodetector to receive the signal. During the measurement, the laser cloud particle imager is fixed under the wing of the aircraft. When the aircraft flies in the cloud, the cloud droplet particles fly along the direction perpendicular to the optical path relativ...

AI Technical Summary

Problems solved by technology

The speed of the motor of this device is fixed, and the linear speed of the black dot is much lower than the actual working airspeed of the CIP. It can only be adjusted manually in a small range, and there is no precise scale, so it is impossible to measure the imaging depth of cloud particles of various sizes.

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