Dissertation > Excellent graduate degree dissertation topics show

Research and Implementation of Voice Diaphragm On-line Detection and Control System

Author: LiuJiaXiao
Tutor: XieYun
School: Guangdong University of Technology
Course: Circuits and Systems
Keywords: Sound film Visual line detection Motion Control Defective excluded Concentricity
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 13
Quote: 0
Read: Download Dissertation

Abstract


With the rapid development of science and technology, machine vision detection technology is increasingly being used in various production areas of product testing industry, and vigorously promote the production automation, information technology and efficiency. Visual detection technology not only solves the traditional artificial detection method is labor-intensive, low efficiency, and the phenomenon of false detection and missed, and ensure the quality of the product at the same time, but also improve the detection efficiency and reduce labor intensity and reduce production costs. Small speakers sound film concentricity parameter is one of the speaker sound quality is an important performance indicators. Plus motion control card using a computer in this article, on the basis of analysis of the characteristics of the sound film, combined with the design goal of the system, the design of a of sound film visual inspection system overall program, and to achieve a sound film concentricity precision online testing. System by function visual subsystems, electromechanical drive subsystem and image processing algorithms to deal with three parts. The main contents of the various subsystems can be summarized as: ① The constructs a can effectively reflect the the sound membrane outer edge of the machine vision optical imaging subsystem; ② research can quickly and accurately, extract sound film diaphragm and voice coil inner and outer circular edge image processing algorithms , and accurately calculate the parameters of sound film concentricity; ③ system uses the DMC2410 motion control card to achieve control of the sound film detection systems motion control module, DMC2410 motion control card to control the stepper motor, servo motor, and realized on in place to detect sensors and limit switches control. Detected defective product testing needs to be from the production line automatically rejected, this paper designed a gas blow defective separation device, general-purpose output port through the DMC2410 movement control card the entire pneumatic control start and stop the control system, and gives a detailed works. The system hardware structure design, the paper discusses the visual detection platform software design. Software using multi-threading technology, a key task is to use the thread to take full advantage of the system resources and improve the efficiency of the implementation of the system. Characteristics of sound intramembranous cylindrical, step-by-step to extract the parameters of the internal and external circular. Threshold segmentation and contour tracking method of combining first the parameters extracted diaphragm cylindrical, then based on Cylindrical parameters determine the inner circle of the local area, improved randomized Hough transform to extract inner circle parameters using the least squares method based on inside and outside the circle parameters fitted to the outer and inner circles, thereby obtaining concentricity parameters. Through a large number of experimental measurements, the high reliability of the system, can effectively eliminate unqualified sound film has a certain economic benefits.

Related Dissertations

  1. Several Key Issues on Closed-Loop Control for Precision Laser Tracking Device,TN249
  2. Study on Adaptive Fuzzy Control Algorithm and Its Implementation,TP273.4
  3. Virtual Human Motion Simulation,R318.0
  4. The Software Development of Coaxiality Error Measuring Equipment Based on Non-diffracting Beam,TP391.41
  5. Design of Stm32-Based CANopen Motion Control Master&slave,TP273
  6. Research and Application of Bilateral Driven Synchronized Motion Control Based on PMAC Motion Control Card,TN05
  7. RFID tag packaging equipment truss speed high-precision motion control,TP273
  8. Based on DSP and CPLD design and implementation of motion control card,TP273
  9. FPGA-based motor motion controller design and implementation,TM301.2
  10. Precision automatic straightening machine elevator guide rail electrical system development and implementation,TU857
  11. Multi-module based on passive joints mobile micro- robot design and motion control,TP242
  12. Design, Modeling and Control Method Study of Precision Grinding Machine Control System,TM921.5
  13. The Research of Monocular Vision Servo Modular Manipulator Control System,TP242
  14. General Motion Control Method of the All-purpose Conroller of Nonstandard Numerical Equipments,TP273
  15. Development Research on Open CNC System for Twin-turret Vertical Lathe,TG519.1
  16. The Research of Open Style Numerical Control System Based on Windows OS,TG659
  17. Research on NC Path-Planning of Multi-Spindle Drilling Machine and Auto-Programming System,TG527
  18. Motion Control of an H-drive Precision Stage Driven by Linear Motors,TM359.4
  19. An Algorithm and Implementation of Distributed Motion Control for Autonomous Underwater Vehicle,TP242
  20. Research on Inpipe Robot in the Vertical Pipeline with Variant Diameter and Its Control System,TP242
  21. The Design and Realization of Motion Control Board Based on VME Bus and Its Driver,TP273

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
© 2012 www.DissertationTopic.Net  Mobile