【摘 要】
：
This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems.A compact mechanical structure ensures the
【机 构】
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The State Key Laboratory of Fluid Power Transmission and Control
【基金项目】
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Ministry of Sciences and Technology of PRC;the International Cooperative Key Project;国家自然科学基金
论文部分内容阅读
This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems.A compact mechanical structure ensures the security and reliability of data logger when used under deep sea.The data logger is a battery powered instrument,which can connect chemical sensors ( pH electrode,H2S electrode,H2 electrode) and temperature sensors.In order to achieve major energy savings,dynamic power management is implemented in hardware design and software design.The working current of the data logger in idle mode and active mode is 15 μA and 1.44 mA respectively,which greatly extends the working time of battery.The data logger has been successfully tested in the first Sino-American Cooperative Deep Submergence Project from August 13 to September 3,2005.
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