Semiconductor laser light source driving system for remote distance measurement

Abstract

The invention discloses a semiconductor laser light source driving system for remote distance measurement. The semiconductor laser light source driving system comprises an MCU minimum system, a driving signal control circuit, a digital potentiometer control circuit and a laser light source driving circuit. The drive signal control circuit, the digital potentiometer control circuit and the laser light source drive circuit are connected with the MCU minimum system. The drive signal control circuit, the digital potentiometer control circuit and the laser light source drive circuit are connected in sequence. The laser light source drive circuit comprises an operational amplifier U5, an MOS tube N1, a laser LD1, a sampling resistor RS1 and a diode D1. According to the invention, the problem ofinsufficient driving current in ultra-long distance measurement is effectively solved, and the distance measurement distance of laser distance measurement is improved. Testing is carried out in various environments, driving of the ultra-large current laser light source for ultra-long distance measurement is achieved, it is effectively verified that the driving current can be adjusted according tothe distance measurement requirement, and then the requirement for using different distance measurement distances in laser application is met.

Description

technical field [0001] The invention belongs to the field of laser optoelectronic technology, and relates to a semiconductor laser drive circuit, in particular to a semiconductor laser light source drive system for remote distance measurement. Background technique [0002] The working principle of semiconductor lasers is: semiconductor laser diodes use semiconductor materials to transition between energy bands to emit light. On this basis, semiconductor crystals are used to oscillate and feed back light to output laser light. Compared with solid-state lasers, semiconductor lasers have outstanding advantages such as small size, good stability, and low power consumption. Therefore, stable and reliable driving of laser emission is the top priority in micro-laser ranging. [0003] New lasers with semiconductor lasers as the core are the main direction of laser development at present and in the future; "faster, higher and stronger" is also a true portrayal of the development of s...

AI Technical Summary

Problems solved by technology

Semiconductor lasers have been widely used in the four core fields of medical treatment, industry, military affairs, and scientific research. They are the future direction of industry technology development. The domestic focus on optical system research, driving and control technology limits the in-depth development of applications

The existing laser light source drive circuit is not capable of driving the current of the laser light source, and the controllability is poor

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