Research And Development Of Landslide Stability Monitoring Device Based On Liquid Metal Antenna

Landslide is a more common and dangerous geological hazard.In the southwest of China and the southeast coast of Fujian,Guangxi,Guangdong and Hainan and other places due to the widespread distribution of mountains and hills,so these areas are landslide disaster prone areas and frequent areas.The main predisposing factors of the landslide are earthquakes,precipitation and human activities.In the context of the country's efforts to promote mountainous infrastructure construction,national transport network construction and frequent mining and mining activities,landslide monitoring and early warning work is particularly important.It is not only an important research topic to promote the modernization of our country,but also an important guarantee for the safety of life and property of the people.Based on the existing traditional landslide stability monitoring method and combined with the new type of landslide monitoring device-liquid metal antenna,this paper puts forward the research topic of "Research and Development of Landslide Stability Monitoring Device Based on Liquid Metal Antenna ".The main results and conclusions of this paper:(1)Based on the physical properties and electrical characteristics of liquid metal(EGaIn),according to the principle of electrochemically controlled capillarity(ECC),the use of liquid metal(EGaIn)can reconfigurable,self-repair and good flexibility and durability characteristics,a liquid metal antenna is designed which can be reconstructed by changing the feed voltage.(2)The experiment of changing the resonant frequency of liquid metal antenna by changing the feeding voltage is designed,the functional relationship between the resonant frequency of the liquid metal antenna and the length of the antenna,the resonant frequency and the DC voltage is studied.Through the data processing and polynomial fitting,the corresponding estimation formula is obtained,and the different estimation formulas were compared to determine the most appropriate one.The results show that the liquid metal antenna can realize the frequency reconfiguration and has the potential to monitor the pressure in the landslide body.(3)Verified the reconfigurable nature of the liquid metal antenna,designed a liquid metal antenna monitoring device prototype,obtained the estimation formula of resonant frequency of liquid metal antenna and pressure,Combined with the existing monitoring methods and monitoring system theory,this paper puts forward the establishment of a landslide stability monitoring system based on liquid metal antenna,The system can achieve real-time monitoring,remote control,as well as integrated collection,processing,backup and transmission of monitoring data.