Dissertation > Excellent graduate degree dissertation topics show

Research on Automatic Reading System for Digital Meters

Author: ShiEnYi
Tutor: WuChengDong´╝ŤChenDongYue
School: Northeastern University
Course: Pattern Recognition and Intelligent Systems
Keywords: automatic reading image processing BP neural network DSP ZigBee
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 11
Quote: 0
Read: Download Dissertation

Abstract


This thesis describes an automatic reading system for general instruments based on image processing and ZigBee wireless communication which is a new solution of instrument automation. Comparing with installing a new intelligent instrument, the automatic reading system has the advantage of avoiding disassembly of existing instruments, needless to wire layout, low economy cost and reusable, which can bring a widely usage in public power networks, public gas systems, mine detection systems, hydrological monitoring systems and so on.A DSP chip TMS320DM643 is chosen as the main processor for the reading module, which is expanded by external memories, video decoder and other devices. Two ZigBee wireless communication modules is designed based on CC2430 which is a new knid of wireless micro control unit containing a radio sender and receiver. Reading module and wireless communication modules make up of the whole system.The software architecture is based on DSP/BIOS. Drivers for image capture and serial communication are designed firstly; followed by image pre-processing, rotate detection and correction, and then segmentation. Characters are located and cut out from the result of segmentation using rejection method. Binary character images are put into a BP neural network to recognize its value.To avoid distortion in image scaling advances a regional average method. In image filter process raises an average-product method which verified to have a good effect. To enhance adaptability to uneven lightness in image segmentation, a new union thresholding method based on gray-scale transformation is proposed. In character location, iterative rejection is applied to reduce its error.For BP neural network training and testing,1400 character images are sampled and reach a recognize rate of 99.7%. Finally an integrated test, including remote control and data transformation, is carried out which proved the reliability and stability of the system, and ultimately the feasibility of the design.

Related Dissertations

  1. Design of Electronicalcontrol System for Electronic Jacquard Knitting Machine,TS183
  2. Research on the Integrated Grating Subdividing Digital Display Device Based on DSP,TH822
  3. Study on Two Dimensional of Auto-Collimator Based on DSP,TH741.14
  4. Research on Temperature Measurement Technique Based on CCD Image Sensor,TH811
  5. Study on the Control System for Automatic Aiming of HWIL Pitching Mechanism,TJ303
  6. Wireless Sensor Net Based Study on Comprehensive Energy Monitoring Technology of Electric Vehicle,U469.72
  7. Research on Synchronous Motor Excitation Control System,TM341
  8. The AES Algorithm and Its Implementation in DSP,TN918.1
  9. The Design of a DSP-Based Robot Speech Command Recgnition System,TN912.34
  10. Research on Signal Receiving System of Phase Laser Range Finder,TN249
  11. Study on Implementation Technology of Channel Estimation in OFDM System Based on DSP,TN919.3
  12. Optimizing and Realising Research on Vedio Compression in TV Guidance System,TN919.81
  13. Voice Signal De-noise Base on Wavelet and Arithmetic Implement with DSP,TN912.3
  14. Research on Basic Algorithms of Digital Image Processing and Implementation with FPGA,TP391.41
  15. Research on Image Compression and Implementation Using TMS320C6713 Based on SPIHT Algorithm,TP391.41
  16. Research of Images Enhancing Algorithms on Fog or Backlighting Conditions and Implementation with Hardwares,TP391.41
  17. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  18. Research on the Image Real-Time Acquisition, Storage and Image Processing System,TP391.41
  19. The Research of Moving Object Tracking System Based on Embeded Image Process Unit,TP391.41
  20. A Study on the Technology of the Infrared Image Matching,TP391.41
  21. Development of 3-Dimensional Scanning Probe Data Acquisition System Based on DSP,TP274.2

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