| USB接口的多功能容栅传感器测量系统 |
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| 引用本文： | 李孝超,严高师. USB接口的多功能容栅传感器测量系统[J]. 单片机与嵌入式系统应用, 2011, 11(11): 52-54 |
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| 作者姓名： | 李孝超 严高师 |
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| 作者单位： | 电子科技大学光电信息学院,成都,610054 |
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| 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。
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| 关 键 词： | 容栅传感器 电平转换 C8051F321 |
Multifunction Capacitive Sensor Measuring System Based on USB |
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| Li Xiaochao,Yan Gaoshi. Multifunction Capacitive Sensor Measuring System Based on USB[J]. Microcontrollers & Embedded Systems, 2011, 11(11): 52-54 |
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| Authors: | Li Xiaochao Yan Gaoshi |
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| Affiliation: | (School of Optoelectronic Information, University of Electronics Science and Technology of China, Chengdu 610054, China) |
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| Abstract: | 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. |
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| Keywords: | capacitive sensor level conversion C8051F321 |
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