Dissertation > Excellent graduate degree dissertation topics show

OMAP3530 -based microphone array life detector design and implementation

Author: LiZhiYe
Tutor: PengQiZuo
School: University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Life detector Microphone array OMAP3530 Dual -core communications QT
CLC: TN912.2
Type: Master's thesis
Year: 2011
Downloads: 148
Quote: 0
Read: Download Dissertation

Abstract


Life detection is the focus of the earthquake emergency relief, and as complex background after the earthquake, life detection is a major difficulty. The traditional life detector probe and product prices subject to physical constraints, in search and rescue is not widely used, so the earthquake rescue harness a new type of life detector. Because voice signals are obvious features of life, so the life detection technology and voice positioning technology combined with interdisciplinary life detector is one of the development. This article describes the life detector light and easy to carry, low power consumption, low cost, breaking the traditional detector probe physical limitations, real-time accurate positioning trapped in the next earthquake search and rescue application prospect. This article briefly describes the life detector using positioning algorithms and hardware platform that focuses on the algorithm of the hardware platform software implementation. The cross-shaped microphone array detector receiving space through the sound, the use of near-field microphone array modeling, an improved algorithm for wideband multiple signal classification (MUSIC) to locate its source, the system's hardware platform using TI's OMAP3530 dual-core processors. This article focuses on life detector using software implementation. System software is implemented in OMAP3530EVM platform, including DSP-side positioning processing software program, ARM and ARM-side management thread end graphical user interface thread. Through the distribution of tasks, DSP focus on signal processing, ARM focus on system-level management, dual-core software communication using TI company based remote procedure calls the Codec Engine framework, in this framework, DSP-side positioning procedures required to meet XDM algorithm standards and produce through the framework layer provides APIs to the user interfaces, ARM end user program simply calls the corresponding VISA API positioning data processing can be realized. System software is the top level of QT / Embedded interactive interface language program. This paper describes the principle of dual-core framework, in line with standard procedures for the preparation XDM step, Codec Engine APIs to call the method, QT rules of communication with the user program, software optimization and compromises. Through several experiments validate the life detector performance and stability, positioning speeds of up to real-time requirements, detection accuracy and detection range basically meet the requirements, the final paper presents the existing deficiencies of the system, and analyzes the causes of these deficiencies cause put forward the corresponding improvement program.

Related Dissertations

  1. Design of Ad hoc Network Application Based on Linux Platform,TN929.5
  2. Intelligent Control System of Chlorine Dosing in Waterworks Based on Embedded System,TU991.2
  3. Design of Patch Clamp Amplifier System Based on Qt/E,TP368.1
  4. Design and Development for Process Control Software System of Injection Machine,TQ320.52
  5. An Improved Design of Spectrophotometer with Double Beam,TH744.12
  6. The Design of Weld Thermal Cycle Testing Portable Device Based on ARM9,TN305
  7. Design and Implementation of User Input Module for Embedded Graphical User Interface,TP391.41
  8. The Design and Realization of Verificating Hardware Platform of Smart Home System,TP273.5
  9. OLED graphical interface and button design,TP368.1
  10. Sensor networks based on DaVinci platform positioning display device to achieve,TN929.5
  11. Narrow gap SAW automatic control system research and design,TG445
  12. ARM9-based embedded Linux system and its application,TP368.1
  13. Distributed la carte based on embedded system design and implementation,TP368.1
  14. XML-based device description communications software development under Linux,TP311.52
  15. Design and Implementation of apparel sales management system based on RFID,TP391.44
  16. The Design and Implementation of Train LED Controller Software Based on Ethernet,TP273
  17. ARM11 embedded video monitoring system terminal - based design,TP277
  18. Study on Image Receiving Device in Vitro of Capsule Endoscopy,R318.6
  19. Two Cases of Takotsubo Cardiomyopathy,R542.2
  20. Research and development of industrial wireless monitoring terminal,TP277

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Electro-acoustic technology and speech signal processing > Electro-acoustic technology and equipment
© 2012 www.DissertationTopic.Net  Mobile