一种多参数小型化飞机结构腐蚀环境监测技术

目的研究腐蚀与环境条件之间的关系,提出一种用于飞机腐蚀环境监测的小型化监测节点的实现方法。方法针对影响腐蚀的4个关键环境参数(温度、相对湿度、湿润时间和氯离子浓度),研究其传感方法并研发选型相应传感器。在此基础上设计基于MSP430处理器的多参数飞机腐蚀环境监测节点。结果通过实验验证了节点中的温湿度传感器、湿润时间传感器和电化学传感器的适用性,能够完成对环境参数的的测量。结论设计的节点满足机载装置小型化、轻量化的要求,可以实现在线的腐蚀环境监测,从而保障飞行安全。

A Multi-parameter Miniaturization Monitoring Node for Aircraft Corrosive Environments

Objective To study the relationship between corrosion and environment, a realizing method of the multi-pa- rameter miniaturization monitoring node for aircraft corrosive environments was proposed in this paper. Methods Four key environmental parameters which are the major factors affecting the corrosion were selected: temperature, humidity, time of wetness (TOW) and chloride ion concentration. And the corresponding sensors were chosen or designed for monitoring. Besides, this paper introduced a miniaturization monitoring node which could realize the measurements of multiple corrosive environmental parameters. The monitoring node was based on the Texas Instruments MSP430 micro-controller and includ- ed the aforementioned sensors. Results In the end, the verifications showed that the humidity and temperature sensor, the TOW sensor, and the electrochemical sensor were available; the measurements of four parameters could be performed cor- rectly by the node. Conclusion Featuring a small volume and low weight, the node was applicable for on-aircraft corrosion monitoring. And this approach will provide actionable knowledge for aircraft maintainers, such that the aircraft safety could be driven to increased levels.