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Research and Application on Data Saving Module Based on Compact Flash Card

Author: YinChengJun
Tutor: WangJiaXing
School: China Seismological Bureau, Institute of Engineering Mechanics
Course: Measuring Technology and Instruments
Keywords: Compact Flash Card File Allocation Table Memory MSP430
CLC: TH762.2
Type: Master's thesis
Year: 2006
Downloads: 421
Quote: 12
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Abstract


Strong Motion Recording System provides the valuable fundamental information when an earthquake occurs, which helps researchers recognize the characteristics of strong ground motion, motivate the development of earthquake engineering, and alleviate the earthquake disasters. With the rapid development of economy and technology, traditional analogy strong motion recorder can’t satisfy the need of the modern scientific research. At present, the researchers usually adopt the advanced embedded idea and make good use of the microcontroller, as well as the solid storage technology to realize the digital recorder, which becomes the main trend of development of strong motion recorder.According to the current conditions and trends of strong motion recorder, after analyzing the differences of some solid storage in detail, then, it adopts the new Compact Flash card (simplified as CF card) as the storage of strong motion recorder and design data saving module. Compared with other storage which used previously, the CF card has so many advantages such as antiknock, big capacity, low power consumption, low price and easy to insert and pull out etc. The CF card is five to ten times more rugged and reliable than disk drives including those found in PC Card Type I and Type II products. After carefully studying the control mechanism of the CF card, it adopts the management of the File Allocation Table document system of Microsoft Company. Moreover, it makes good use of the lowest power consumption MCU as the main controller to complete the management of module. Both the communication and the time system of the module are designed in the article. Finally, the author introduces the software on PC, which makes the uploading the data from the storage and the management of the documents come true. All those mentioned above makes the whole machine function get a further perfect exaltation.The data acquisition equipment based on the CF card utilizes the new storage and document management, which raise the instrument function, providing a new method and module for the data acquisition of strong motion recorder, preparing for the development of the strong motion recorder. After the refined experiment test, the module based on the CF card has many advantages, such as good stability, control vividly, pocket, lower power consumption etc, which can fully satisfy the need of the storage of the strong motion recorder. It has high practical value.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Earth Science Instruments > Geophysical observation instruments > Seismic instruments
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