用于海底热液pH探测电极自校正的控制技术研究

在海底热液pH值的探测过程中,探测电极的特性会随时间的推移而发生变化。为了实现长期的原位探测,需要一套流体控制系统对探测电极进行自校正与自维护。针对所设计的流体控制系统,遵循低功耗的设计原则,研制了其主控系统,包括硬件设计和软件开发。为了使控制系统能应用于海底热液环境,对其进行了耐压封装设计,并进行了高压水实验,实验结果表明系统在40 MPa的高压下能正常工作。各种测试指标亦表明系统能自动实现pH探测电极自校正与自维护的功能。

Study on control technology of self-calibration for seafloor hydrothermal fluid pH exploration electrode

In the course of seafloor hydrothermal fluid pH exploration,characteristics of exploration electrode will change with time.In order to implement long-time in-situ exploration,a set of fluid control system is needed to carry out the function of self-calibration and self-maintaining for exploration electrode.Aiming at the goal of the fluid control system,and considering its low power consumption design principle,a main control system is developed,covering hardware design and software development.To enable the control system to apply in seafloor hydrothermal fluid environment,pressure housing of the control system is designed,and pressure experiment is performed.The experiment results show that the system can work normally in 40MPa environment.The test data show that the system can implement automatically the function of self-calibration and self-maintaining for pH exploration electrode.