Inexpensive multichannel digital data acquisition system for a meteorological radiosonde
Inexpensive multichannel digital data acquisition system for a meteorological radiosonde
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DOI：
10.1063/1.1841971
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发表时间：
2005-02-01
影响因子：
1.6
通讯作者：
Harrison, RG
中科院分区：
文献类型：
--
作者：
Harrison, RG
气象无线电探空仪定期发射，以获得对流层下部的温度、相对湿度、气压和风参数的探测结果。携带额外传感器的能力大大扩展了每一次探测的有用性和成本效益，允许研究低层大气的其他属性，如臭氧、放射性和电场。描述了一种廉价的四通道数字数据采集系统，该系统安装在Vaisala Rs80-15L无线电探空仪中，可与其他传感器集成。使用12位模数转换，微控制器将获得的电压测量结果格式化，以便通过无线电探空仪的UHF无线电链路以300波特的速度进行串行传输。一个通道上的最大采样速率为10赫兹，如果对多个通道进行采样，则该速率会降低。标准气象数据遥测不受影响。在设备经历从4摄氏度到零下55摄氏度的大气温度的整个飞行过程中，5V FSD范围的绝对误差小于15 mV。(C)2005年美国物理研究所。
Meteorological radiosondes are launched routinely to obtain lower troposphere soundings of temperature, relative humidity, pressure, and wind parameters. The ability to carry extra sensors considerably extends the usefulness and cost-effectiveness of each sounding, permitting research into other properties of the lower atmosphere such as ozone, radioactivity, and electric field. An inexpensive four-channel digital data acquisition system is described which fits within the Vaisala RS80-15L radiosonde, for integration with other sensors. Using a 12-bit analog to digital conversion, a microcontroller formats the voltage measurements obtained for serial transmission over the radiosonde's UHF radio link at 300 baud. Maximum sampling rate on one channel is 10 Hz, which is reduced if multiple channels are sampled. The standard meteorological data telemetry is unaffected. During an entire flight in which the equipment experienced atmospheric temperatures from 4 degreesC to -55 degreesC, the absolute error on a 5 V fsd range was less than 15 mV. (C) 2005 American Institute of Physics.