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《Journal of Anhui Agricultural Sciences》 2009-14
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Communication Method between Upper and Lower Computer of Inspection System on Apple Internal Quality Based on USB

YANG Liang-liang et al(College of Mechanical and Electronic Engineering,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100)  
In order to realize the automatically nondestructive detection on apple internal quality,the image processing workstation was taken as upper computer to collect and analyze the x-ray image of apple,and AT89C51 single chip microcomputer was taken as lower computer to detect the position of apple and output analysis results,and the communication between upper and lower computer was realized with USB interface and RS232 chip.Compared with the communication between upper and lower computer with commonly used serial port RS232,the development difficulty of communication method with USB interface was big,but the information transmission speed between upper and lower computer of the system was faster,and the application of USB interface was more convenient than that of serial port interface.According to 1 000 times transmission test,the method could be reliably used to control upper and lower computer in nondestructive inspection system on apple internal quality and transfer the data signal.The method also could be used in communication of related fields.
【Fund】: 西北农林科技大学校长基金项目(08080101);; 校青年学术骨干基金项目(01140303);; 中国博士后项目(20060401012)
【CateGory Index】: TP274
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