Laser ranging device and method

Abstract

The invention relates to a laser ranging device and method. The device comprises a main control module, an energy discrimination module, a distance measuring module and a timing discrimination module, the energy discrimination module is connected to the main control module and comprises a first laser transmitting unit and a first laser receiving unit, the distance measuring module is connected with the main control module and comprises a second laser transmitting unit and a second laser receiving unit, and the timing discrimination module is connected with the distance measuring module and the main control module. According to the laser ranging device, laser transmitting power, a photoelectric conversion coefficient and the like in the distance measuring module can be adjusted according to reflectance of measured objects, accurate ranging can be achieved no matter when the reflectivity of measured objects is high or low, so that ranging accuracy is improved.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a laser distance measuring device and method. Background technique [0002] The laser distance measuring device is widely used in the field of distance detection due to its high measurement accuracy and strong directionality. The laser distance measuring device uses a laser to send modulated laser pulses to the measured object, and the photoelectric converter receives the reflected laser pulses. , determine the distance between the device and the measured object according to the time difference between the emission and reception of the laser pulse. Specifically, the laser light emitted by the laser tube in the pulsed laser device is reflected on the object to be measured to form an echo optical signal, and the optical signal is converted into an electrical signal by a photoelectric converter, and then the electrical signal is amplified by an amplifying circuit. The amplified sign...

AI Technical Summary

Problems solved by technology

[0003] However, the existing laser distance measuring devices generally ignore the reflectivity of the measured object, and the laser reflection ability of different measured objects is different, resulting in different energy levels of echo signals

When the reflectivity of the measured object is low, the echo signal is very weak. When the reflectivity of the measured object is high, the echo signal is strong. The echo amplitudes of different energies are different, which often leads to inaccurate measurement or even measurement failure.

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