Vehicle-mounted laser Doppler tachymeter
A Doppler velocimeter and vehicle-mounted laser technology, which is applied to instruments, measuring devices, fluid velocity measurement, etc., can solve the problems that the vehicle cannot provide speed measurement information, and the laser Doppler velocimeter cannot adapt to the bumping and swaying of the vehicle. Reduce the signal drop rate and the effect of strong signal
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[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the figures of the embodiments of the present invention, and further detailed description will be given, but the embodiments of the present invention are not limited to this.
[0042] Reference figure 1 , Is a schematic diagram of the structure of the present invention. The vehicle-mounted laser Doppler velocimeter 23 includes a single longitudinal mode solid-state laser 1, a beam splitter 2, a first half mirror 3, a second half mirror 4, a first attenuator 5, a second attenuator 6, First total mirror 7, second total mirror 8, first narrow light filter 9, second narrow light filter 10, first aperture 11, second aperture 12, first avalanche diode module 13 , The second avalanche diode module 14, the third aperture 15, the fourth aperture 16, the first condenser lens 17, the second condenser lens 18, the fifth ap...
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