implementation of linear cmos image data acquisition and data encode compression.pdf

第卷第期传感技术学报
24 4 Vol. 24摇 No. 4
年月
2011 4 CHINESE JOURNAL OF SENSORS AND ACTUATORS Apr. 2011
Implementation of Linear CMOS Image Data Acquisition
and Data pression*
JIANG Zhidong1 ,GAO Taichang1*,SUN Haiyang1 ,ZHAIi Dongli2
. Institute of Meteorology,PLA Univ. of Science and Technology,Nanjing ,China;
1 211101
( . Zhong Huatong Electric CO. LTD,NanJing ,China )
2 211101
Abstract: ,
In order to realize untouchable measurement of raindrops and fogdrops particle measurement system
,
which based on linear CMOS image sensor was designed. The system take advantage of rich resoures flexible inter鄄
, ,
face and puting of FPGA bined with a USB chip a stable and reliable data collection system in
爷
high speed has been realized. High鄄speed data acquisition and data encoding in real鄄time based on Xilinx s FPGA
, ,
XC3S200 is designed in the system. Original data of CMOS image sensor can be obtained with the preset threshold
paring and encoding in real鄄time can be realized as well. Original data or encoding data can be transmitted
according to requirement. Dual鄄ports RAM and FIFO are designed in this system for data buffer unit and 鄄
, ,
parison unit so it can meet the demand for high speed data collecting transfer and processing. The structure of the
,
system is simple low cost and has wide application prospect.
Key words: ; ; ; ; ;
atmospheric