Method and system for remotely monitoring laser power of laser device on basis of virtual instruments

A laser power and remote monitoring technology, applied in the field of lasers, can solve the problems of inaccurate detection data, indirect detection methods, uneven distribution, etc., and achieve the effects of system safety and stability, efficient and convenient operation, and simple and convenient operation.

Inactive Publication Date: 2015-07-01
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Off-line detection needs to interrupt the processing process and cannot reflect the changes in laser power in the processing process in real time, so it has the disadvantages of indirect detection methods, inaccurate detection data and cannot be updated in real time.
[0004] The Chinese invention patent with the publication number CN101451886A disclosed a semiconductor laser laser power real-time online detection device on June 10, 2009. A beam splitter is placed in the optical path of the semiconductor array laser, and the laser beam output from the laser and reflected from the workpiece Two parts of the beam are separated from the light beam. According to the characteristics of the uneven distribution of the intensity of the

Method used

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  • Method and system for remotely monitoring laser power of laser device on basis of virtual instruments
  • Method and system for remotely monitoring laser power of laser device on basis of virtual instruments
  • Method and system for remotely monitoring laser power of laser device on basis of virtual instruments

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Embodiment 1

[0103] Please refer to Figure 1 to Figure 2 , Embodiment 1 of the present invention is:

[0104] A method for remote monitoring of laser power of a laser based on a virtual instrument, the method is:

[0105] The laser power meter detects the laser beam power of the laser and converts the detected laser beam power into a voltage signal;

[0106] The temperature sensor detects the temperature of the laser focusing head of the laser, and converts the detected temperature of the laser focusing head into a voltage signal;

[0107] The data acquisition card collects the values ​​measured by the laser power meter and the temperature sensor, and converts the collected voltage signal into a digital signal through A / D conversion;

[0108] The upper computer obtains the values ​​measured by the laser power meter and the temperature sensor collected by the data acquisition card;

[0109] Based on the values ​​measured by the laser power meter and temperature sensor collected by the d...

Embodiment 2

[0119] The laser uses a semiconductor laser, and the laser power meter uses a DH-JG2 power meter with a minimum resolution of 0.001uw, using multiple wavelengths (830nm, 632.8nm, 514.5nm, 488nm, 457.9nm and 441.6nm), and a range from 2uw-200w. According to the relationship between power and output voltage: the power value P is equal to the output voltage V 0 vs. full-scale voltage V max The ratio of is multiplied by the range L:

[0120] P = Vo V max × L

[0121]The upper computer adopts the upper computer program written in the LabVIEW of the American Virtual Instrument Company, and configures the NI-DAQmx read-write control data acquisition card.

[0122] A method for remote monitoring of laser power of a laser based on a virtual instrument, the method is:

[0123] Input laser information, operator, equipment information, warm-up time, acquisition time, acqui...

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Abstract

The invention provides a method and a system for remotely monitoring laser power of a laser device on the basis of virtual instruments. The method includes acquiring the laser power of laser beams emitted by the laser device by the aid of a laser power meter; acquiring temperatures of a condenser barrel of the laser device by the aid of a temperature sensor; transmitting data measured by the laser power meter and the temperature sensor to a remote client via a data acquisition card, an upper computer and a cloud server; enabling the remote client to generate laser device running control instructions according to fault conditions of the laser device; transmitting the laser device running control instructions to the upper computer via the cloud server and controlling the laser device when the laser device runs. The method and the system have the advantages that the laser device can be remotely monitored and controlled in real time, the system is stable and safe and is convenient to operate, and the product processing quality can be improved.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a method and system for remote monitoring of laser power of lasers based on virtual instruments. Background technique [0002] Laser output power is one of the key parameters of the laser. In the field of laser processing, the laser power of the laser directly affects the processing range, processing technology and processing quality parameters. Therefore, the detection of laser power is an indispensable part of the laser. In addition, the beam emitted by the laser reaches the laser focusing head after passing through the resonator, and then reaches the surface of the workpiece. The laser focusing head is equipped with a focusing lens. If the temperature in the laser focusing head is too high, the focusing lens will crack and cannot be used. It needs to be replaced. . [0003] At present, there are mainly two methods of offline detection and online detection for the detection of laser powe...

Claims

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Application Information

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IPC IPC(8): G01J1/42G01K1/02G08C17/02G01K1/022G01K1/024
Inventor 吴伟霖陈冠楠陈荣李彬雅龚海明李彦刘明宇刘高强林金勇刘垚
Owner FUJIAN NORMAL UNIV
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