High-accuracy laser remote-sensing numerically-controlled power supply system and control method

Abstract

The invention discloses a high-accuracy laser remote-sensing numerically-controlled power supply system and a control method. The system comprises a BOOST PFC (power factor correction) module, a chip-isolating power supply module, an MOS (metal oxide semiconductor) driving module, a main circuit voltage reducing module and a control module. The BOOST PFC module is connected with the chip-isolatingpower supply module and the main circuit voltage reducing module. The chip-isolating power supply module is connected with the MOS driving module. The main circuit voltage reducing module is connected with the control module. The control module is connected with the MOS driving module. The MOS driving module is connected with the main circuit voltage reducing module. The high-accuracy laser remote-sensing numerically-controlled power supply system and the control method have the advantages that the problems of low digitization of the laser power sources of semiconductor pumps and low constantcurrent accuracy of low voltage and high currents are solved; the structures of conventional two-stage series circuits are improved, and accordingly, high-accuracy working currents can be provided tolaser remote-sensing semiconductor laser devices; the control method capable of achieving rapid algorithm filtering, high-accuracy control and high-robustness control is provided.

Description

technical field [0001] The invention belongs to the field of laser power supply and automatic control, and relates to a laser remote sensing power supply system capable of realizing digital control and a constant current control method of the power supply. Background technique [0002] Laser remote sensing is an active modern optical remote sensing device, which is an extension of traditional radio or microwave radar (radar) to the optical frequency band. Laser remote sensing technology is not only an active remote sensing technology, but also can obtain the spatial characteristics and physical characteristics of the earth's surface at the same time, which has an irreplaceable role in passive optical remote sensing. Due to the shortening of the wavelength of the probe beam and the strengthening of the directionality, the laser radar has the advantages of high spatial and temporal resolution and high detection sensitivity, and is widely used in remote sensing of the atmospher...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low digitization of the laser power supply pumped by semiconductors and relatively low precision of constant current at low voltage and high current, and improve the above-mentioned traditional two-stage series circuit structure, which can provide high-quality laser remote sensing semiconductor lasers. Accurate working current, and put forward how to realize algorithm fast filtering, high-precision control, strong robustness control method

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