基于USB2.0的温湿度及气压集成测量系统  

Integrated Measurement System of Humiture and Air-pressure based on USB2.0

作　　者：邓元龙[1,2] 吴玉斌[1,2] 苏河滔[1,2] 

机构地区：[1]深圳大学机电与控制工程学院,广东深圳518060 [2]深圳市模具先进制造技术重点实验室

出　　处：《微计算机信息》2008年第35期48-50,共3页Control & Automation

摘　　要：本文以USB2.0控制芯片CY7C68013为核心,采用DS18B20、MS5534和HF3223精密测量环境温度、气压和湿度,所采用的传感器均为数字式或准数字式,无需标定。采用直接读取暂存器的方法,温度示值分辨率细分到0.01℃;在51～84%RH范围内,湿度测量精度优于±3.4%RH;气压测量不确定度为±0.5mbar。系统具有便携和低功耗的特点,既可以独立工作,又可以通过USB端口与PC机相连,实现测量数据传送与进一步处理。DS18B20, MS5534 and HF3223 were employed to detect temperature, air pressure and humidity respectively based on an USB2.0 control unit CY7C68013, no calibration is needed with these digital or quasi-digital sensors. The resolution of temperature indicating value is subdivided to 0.01℃ by direct reading the registers in DS18B20; The experimental results show the measurement accuracy of humidity precedes ±3.4%RH in the range of 51-84%RH; The measurement uncertainty of air pressure is less than ± 0.5mbar. In addition to work alone with the features of portability and low-power, drivers were designed to make the system communication with a PC through USB interface for data transfer and further process.

关 键 词：CY7C68013 MS5534 DS18B20 HF3223 温湿度 气压测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]