基于高精度差分定位法的水文测量自动化报警系统设计

Design of hydrological measurement automation alarm system based on high-precision differential positioning method

为实现异常水文位置测量信息的自动化准确报警,设计基于高精度差分定位法的水文测量自动化报警系统。采集水位、温度、湿度、流量信号,提取四种水文信息的信号功率数据,基于反射解算的水位信息测量方法解算各历元水文测量信号功率,提取水位变化数据,使用模糊自适应卡尔曼滤波的水位差分定位方法,将解算的水位数据设成模糊卡尔曼滤波初始值,由模糊推理模型,修正水文信息量测噪声,实现高精度水文信息定位测量,若水位异常,便由声光报警器报警。经测试,此系统对海面异常波动的水位定位偏差小于0.03 m,自动化报警时延小于0.5 s,具备高精度异常水文位置自动化报警能力。

In order to achieve automatic and accurate alarm of abnormal hydrological position measurement information,a hydrological measurement automation alarm system based on high-precision differential positioning method is designed.Collect water level,temperature,humidity and flow signals,extract the signal power data of four hydrological information,calculate the signal power of hydrological measurement in each epoch based on the water level information measurement method of reflection solution,extract the water level change data,use the water level differential positioning method of fuzzy adaptive Kalman filter,set the calculated water level data as the initial value of fuzzy Kalman filter,and correct the measurement noise of hydrological information by using the fuzzy reasoning model,Realize high-precision hydrological information positioning measurement,and if the water level is abnormal,an audible and visual alarm will sound.After testing,this system has a water level positioning deviation of less than 0.03m for abnormal sea level fluctuations,and an automatic alarm delay of less than 0.5s.It has the ability to automatically alarm high-precision abnormal hydrological positions.