Dissertation > Excellent graduate degree dissertation topics show

Research of Test System of LD Characteristics Based on Vitrtual Instrument Technology

Author: ZhaoWei
Tutor: GuHuiPing
School: Harbin Institute of Technology
Course: Mechanical and Electronic Engineering
Keywords: laser diode auto testing virtual instrument parameter fuzzy self-tuning PID
CLC: TN248.4
Type: Master's thesis
Year: 2006
Downloads: 257
Quote: 1
Read: Download Dissertation

Abstract


Semiconductor laser diode plays a more important role in the field of industry and research with the widely application of laser technology especially the development of optic communication. Use advanced test method to control the quality of LD is very important .Test system is expected to be more efficiency, intelligent, and integrated with the request of test. The openly design idea of virtual instrument afford an efficiency method for quicken the test and reduce the cost.In this paper, after studying the technology of virtual instrument and the characteristics of LD, we developed the LD test system using the design idea of virtual instrument。The system is mainly used for test the threshold current, differential efficiency, V-I characteristic and P-I characteristic of LD module. The hardware of system is used sensor and signal conditioning circuit to collect the signal and communication with the computer using the PCI2013 .For the undulation of temperature and driven current will influence the testing result, they need to be invariableness during testing. We provided ACC and APC two modes for the close loop controlling of current. Parameter fuzzy-PID is used to control the temperature. During running, computer deal with fuzzy rules and carry out the best adjust of PID parameters. We programmed with modularization idea of LabVIEW ,we achieved to set the test parameter, data acquisition , data processing and result display, communication with the optic testing instrument. We also achieved to drive no-NI DAQ and efficiency the system software by use multitasks.The article finished the whole testing instrument and the roundly detect. According the experiment result, the system can test the LD efficiency and display the result on the computer. The exactment and stability of current and temperature for the instrument is achieved the aim and meet the design requirement.

Related Dissertations

  1. Study of Automobile Ignition Coil Testing System Based on Standard LAH032.905,U472.9
  2. Development of Tractor’s Virtual Instrument System Based on CAN Bus,S219.02
  3. Research and Application of Remote Virtual Instrument Experimental Teaching System Based on LabVIEW,TP391.6
  4. Research on Automatic Measurement Technology of Pitch Diameter for the Rzeppa Joint Housing Raceways,TG80
  5. The Research on Test System of the Relay’s Electrical Properties and Experiment,TM58
  6. The Research and Application of Virtual Instrument Technology in Sensor Intelligent Measuring System,TP212
  7. Development and Experimental Study about Virtual Instruments of Vibration Test and Analysis System and Combustion Analyzer,TK407
  8. Research of Key Technologies of Stabizing LD in Gas Detection System,TN248
  9. Study on the Theory of Electromagnetic Detection and Development of Virtual Instrument for Steel Rope Broken Wire,TD532
  10. Analysis and Research Vibration Property of AC Motor on Variable Frequency Adjustable Speed System,TM34
  11. Design and Realization of Launcher Integrated Test System Based on DSP and FPGA,TJ06
  12. Intensity Distribution Investigation and Beam Shaping about the Laser Diode Array,TN248.4
  13. The Research of Motor Test System Based on Networked Virtual Instruments,TM306
  14. The Research on Measuring Stress Changes of Rock Utilizing Rayleigh Wave and the System Implementation Based on Virtual Instrument,P631.4
  15. Thermal Analysis of Laser Chip with Different Sise Based on C-Mount Packaging,TN248.4
  16. Study on the Improvement of the Damage of ODD Laser Diode,TN248.4
  17. Study on the System of Beam Shaping for High-Power Laser Diode Array,TN248.4
  18. The development of the new type of semiconductor laser power,TN248.4
  19. Design of Impact Test Table for Vehicle Parts and Analysis on the Test,U467.52
  20. Research on the Digital Controlling Platform of Switched Reluctance Starter/Generator System,TM352
  21. The Research on All-solid-state Cw Single Frequency Nd: YLF Laser,TN248

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser > Semiconductor lasers
© 2012 www.DissertationTopic.Net  Mobile