A New Remote Monitoring System Application in Laser Power Based on LabVIEW
MATEC Web of Conferences
A New Remote Monitoring System Application in Laser Power Based on LabVIEW
0 Fuzhou , 350007 , China
1 Gaoqiang Liu , Weilin Wu, Mingyu Liu, Kun Zhang and Guannan Chen
2 Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education
In this paper, a new remote monitoring system based on LabVIEW was proposed to measure laser power automatically and remotely. This system consists of four basic components: an DH-JG2 optical power meter, a NI-USB 6008 data acquisition card, a personal computer (PC), and HP laserJet 1020 Plus printer. Since power output of laser is generally so unstable that abnormal work situation could not retroaction to inspectors right away, new system was designed to solve this problem. The detection system realized function of remote control by TCP protocol and mobile phone. Laser power curve that is measured by detection system demonstrated that the design has a good performance in real-time detection and operability.
1 Introduction
Laser is the important component of technologies in the
field of communication, manufacturing, as well as optical
experiment because of its characteristics including high
brightness, good monocolor, good coherence as well as
good direction. However, as far application, one of the
main problems is that its output power is not stable and
the laser is easy to be destroyed because of transient
circuit and voltage peak[
1
]. Lots of power meters were
invented for measurement in the process of laser
manufacture last decades. With the rapid development of
the computer technology, manual operation desktop
machines have the disadvantages of low efficiency,
inconvenient data analysis and storage in the quality of
laser testing[
2
]. Therefore, software-based automated
testing system design is imperative. Measurement system
of laser power in VC++[
3
], the software of optical power
measurement and calibration and instrument control
system based on LabVIEW have overcame the lack of the
manual operation desktop machines, but they remains to
be more automatical, and errors in the testing process
can’t be managed when failed in working in time[
4
].
With the rapid development of the computer
technology and the software technology, there are more
and more kinds of software development platforms and
instrument functions which can be achieved by computers
and related software NI-LabVIEW[
5
]. LabVIEW
produced by National Instruments is the most widely used
as virtual instrumentation system. It has the development
and debugging tools of traditional programming language.
The greatest feature of LabVIEW is the graphical
programming language, which is easy to grasp,
understand develop a friendly, realistic user interface.
Furthermore, it has the powerful signal processing ability,
and integrates almost all of the features of hardware
communications such as data acquisition card. Virtual
instrument is an individual computer testing equipment
that has a virtual instrument panel. It brings a
revolutionary change in the field of automatic testing
system. To a testing platform, LabVIEW includes the
storage functions of data collection, processing and
analysis. To meet the needs of various practical
applications toolbox, it can use dynamic link (DLL)
technology to users of the virtual instrument software to
link to them. use links embedded object (OLE)
technology will be embedded in other virtual instruments.
LabVIEW offers a numbers of source-level instrument
drivers, including DAQ, GPIB, PXI, VXI, RS232 as well
as USB, users can choose their own hardware drivers
according their own needs[
6
].
In this paper, a remote monitoring system in laser
power based on Labview was designed and implemented.
The system used optical power meter DH-JG2 as
monitoring laser power component produced by DaHeng.
NI-USB 6008 data acquisition card was utilized to collect
the power data from power meter. A electrical energy
supply system HSPY_36_03 produced by HSPY was
employed for turning on or off the laser, Also HP laserJet
1020 Plus as the output device of the test report. Besides,
using the real time software LabVIEW displayed and
analyzed the power data, and a mobile phone was used to
remotely monitor.
2 System composition
System design framework is shown in fig. 1, from which
we can see the system consisting of Laser, power meter,
data acquisition card, printer, PC machine, electrical
energy supply system as well as mobile phone. In which,
DH-JG2 is the power meter, responsible for collecting the
actual laser power data, and outputting voltage signals.
And the USB 6008 is a data acquisition card produced by
NI(National Instrument), can collect voltage signals from
DH-JG2, convert the signals into digital signals and send
the digital signals to the PC machine by USB bus[
7
]. On
the one hand, PC machine displays and analyses the
power data, and generates a test report and sends it to the
HP laserJet 1020 plus and then the repor (...truncated)