基于动态变频和实时过滤技术的泥石流泥位预警方法及应用OA北大核心CSTPCD

[Objective]The existing automated monitoring equipment for mud level is limited by fixed frequency and monitoring errors,making it difficult to meet the real-time and accurate warning needs of debris flow based on mud level changes.Therefore,it is necessary to improve the collection and filtering method of existing monitoring equipment to improve the timely and accurate acquisition of mud level height by mud level monitoring equipment.[Methods]Taking a mudslide ditch in Linzhi City,Tibet as an example,by analyzing the characteristics of common mudslide mud level monitoring data,we propose a mud level monitoring method with dynamic variable frequency monitoring technology for the problem of fixed frequency,and improve the real-time error filtering method based on the least squares method to realize the real-time filtration and timely discrimination of mud level data of mudslides.[Results]The result show that the error fluctuation of mud level monitoring data after using dynamic frequency con-version and real-time filtering processing is significantly reduced,and the acquisition of key data is superior to conventional mud level monitoring equipment in terms of time.[Conclusion]The result indicate that using dynamic frequency conversion technolo-gy can detect mud level changes earlier,and the filtered key data can be basically retained,which has won time for early warning of debris flows.The research result can provide scientific and reliable technical reference for monitoring and warning of mud level in debris flows.