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A Synchronous Orientation Grabbing Method of Laser Pulse Signal

A laser pulse and signal synchronization technology, which is applied in the laser field, can solve the problems of no laser pulse synchronous screening, the speed of the galvanometer cannot reach a wide spacing, etc., and achieve the effect of convenient and simple control and improved accuracy

Active Publication Date: 2017-03-01
WUHAN DR LASER TECH CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the scanning speed of the galvanometer has a fixed upper limit, and some processing patterns have strict requirements on the interval of laser pulses, but the current speed of the galvanometer cannot achieve the goal of wide spacing, and even some processing patterns only need to accept one laser pulse. pulse or several laser pulses, so the directional capture of the synchronization of the laser pulses becomes the key technology of the present invention. At present, there is no practical method for synchronous screening of the laser pulses. The present invention can perform directional screening and control of the pulses

Method used

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  • A Synchronous Orientation Grabbing Method of Laser Pulse Signal
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  • A Synchronous Orientation Grabbing Method of Laser Pulse Signal

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing, as figure 1 , 2 , shown in 3, the core part of the present invention is a laser signal capture card, which synchronously processes laser pulse signals. This card is based on the MCU (single-chip microcomputer) controller, and is equipped with input signal isolation, output signal isolation and strengthening unit, and RS232 communication channel and so on. The specific workflow is as follows:

[0020] (1) The laser pulse signal is input to the MCU (single chip microcomputer) through the input isolation module, and the MCU captures the rising edge of the signal and calculates the frequency of the signal. Since the capture takes a certain amount of time, there is a time deviation T1 between the actual pulse phase and the captured phase.

[0021] (2) The MCU decides to match the frequency and duty cycle of the output pulse according to the parameters that have been set. As men...

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Abstract

The invention relates to the field of laser machining, and provides a system and method for synchronously and directionally capturing laser pulse signals. Laser light is emitted out by a laser with a fixed frequency and projected to the surface of a workpiece in a pulsed mode to machine the workpiece. Meanwhile, the machining patterns, machining speed and machining effect are determined according to the scanning speed of a vibration mirror. However, the scanning speed of the vibration mirror has a fixed upper limit, some machining patterns have strict requirements for laser pulse intervals, and the purpose for a wide interval cannot be achieved with the existing speed of the vibration mirror. Even some machining patterns only need to accept the effect of one laser pulse or several laser pulses, as a result, the synchronous and directional capturing of the laser pulses is the key technology of the system and method, and currently no actual method for synchronous screening of the laser pulses exists within a short duration. The system and method can directionally screen and control the pulses.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a method for synchronous and directional grasping of laser pulse signals. Background technique [0002] The laser is emitted by the laser at a fixed frequency and projected onto the surface of the workpiece in the form of pulses to process the workpiece. At the same time, the scanning speed of the galvanometer determines the processing pattern, processing speed, and processing effect. However, the scanning speed of the galvanometer has a fixed upper limit, and some processing patterns have strict requirements on the interval of laser pulses, but the current speed of the galvanometer cannot achieve the goal of wide spacing, and even some processing patterns only need to accept one laser pulse. pulse or several laser pulses, so the directional capture of the synchronization of the laser pulses becomes the key technology of the present invention. At present, there is no practical method for sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/0622
Inventor 李志刚
Owner WUHAN DR LASER TECH CORP LTD
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