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Earthquake Field Information Acquisition and Wireless Transmission System

Author: QinSiHai
Tutor: ShaXueJun
School: Harbin Institute of Technology
Course: Information and Communication Engineering
Keywords: Seismic information collection Wireless communication Vibration measurements Image Compression Speech coding
CLC: TP274.2
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 0
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Abstract


The earthquake is a devastating natural disaster facing humanity , whenever a large earthquake will bring huge losses of life and property . Earthquake relief work after the earthquake to get the attention of the world , and the the earthquake site 's information collection quickly and efficiently to carry out rescue work . Existing means of information gathering and transmission mode , there are certain drawbacks , not convenient and flexible the earthquake site 's information collection . In this background, to be able to complete a set of information collection of the vibration data , images, voice and the wireless transmission system according to the actual needs of the application , design . Analysis of the application of key technologies in the system , given the overall design , detailing a concrete realization of custom hardware and software communication protocols . Aims to develop a set of small size , easy to carry and use flexible information acquisition device . Firstly, according to the functions to be implemented by the system , analyze the system contains modules on key parameters of each module is calculated , given the overall design of the master station and sub ??- station . And analysis of the key technologies involved in each module , various options to determine the vibration sensing image compression coding, speech coding , wireless transmission scheme . Secondly, on the specific implementation of each module hardware circuit is described . Described the selection of a master chip and its minimum system structures ; data module vibration sensing principle , the use of signal conditioning circuit design , A / D sampling ; the image module format conversion , design principles and coding chip peripheral circuits ; voice module used codec chip and peripheral circuit design ; wireless module chip structure . In addition, the design of the communication protocol between the master station and the secondary station , the frame type and the frame contents of each module . The software architecture of the system as a whole , according to the communication protocol defined architecture, describes the overall design ideology . Details of each module in the program design, gives the corresponding flowchart of a program . Finally, a show produced the prototype, the host operating system interface . Described the experimental results and the performance achieved in each module .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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