摘要
根据容栅传感器的原理与带USB模块的C8051F321单片机,设计了一套基于USB接口的测量系统。该系统能实现最大数跟踪、最小数跟踪、示值保持和清零等功能,通过USB接口与上位机交换数据。系统中采用LM393芯片将传感器信号电平转换为CMOS电平,采用光耦隔离技术等增强系统的抗干扰能力。
According to the principle of capacitive sensors and the C8052F321 MCU with USB module,a measurement system based on USB interface is designed. The system can track the maximum and the minimum counting, hold the display and clear, and uses USB interface to exchange data with the host computer. The system uses LM393 chip to convert the signal level of the sensor to the CMOS level,and also uses opto isolation technology to enhance system＇s anti-jamming capability.
出处
《单片机与嵌入式系统应用》
2011年第11期52-54,共3页
Microcontrollers & Embedded Systems
