Title :
Design and Realization of Digital Informational System
Author :
Jiasheng, Chen ; Songsheng, Zhu ; Dongjin, Bian
Author_Institution :
Nanjing Normal Univ., Nanjing
Abstract :
The digital informational system (DIS) is a portable, handheld, battery-operated data collection device for collecting "real-world" data. In this paper the design and realization of the DIS in hardware and software are introduced. In core module there are three part: embedded CPU (S3C44B0XX SDRAM (HY57V641620HG) and FLASH (28F320C3BA100) form handheld instrument basic system. The popular ARM microprocessor was applied to the DIS. Combining the powerful data calculation and control capability of ARM, the kinds more than 40, analog and digital sensor can be connected. The man-machine interaction is realized from the 160times160LCD and the keyboard circuit; the low power consumption and high reliably power supply is designed used in the special power supply chip; and the general functions are programmed. The principle graphic of hardware design based on S3C44B0X is presented and the analog test circuit and cycle/frequency circuit and software of measurement and control are expatiated in detail.
Keywords :
DRAM chips; computerised instrumentation; data loggers; flash memories; hardware-software codesign; microprocessor chips; portable instruments; ARM microprocessor; FLASH; SDRAM; battery-operated data collection device; digital informational system; embedded CPU; handheld data collection device; handheld instrument basic system; hardware and software codesign; low power consumption; man-machine interaction; portable data collection device; Circuit testing; Energy consumption; Hardware; Instruments; Keyboards; Man machine systems; Microprocessors; Power supplies; Power system reliability; SDRAM; ARM Embedded System; Digital Informational System; LCD graphics display; handheld Instrument;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350663
