61 results about "Flood warning" patented technology

Techniques for automatically providing flood warnings to individuals are provided. The techniques include receiving a message regarding a water level observed in connection with a totem display at a geographic area, using the message and one or more items of available data to generate a flood level prediction for the geographic area, and sending a flood warning to one or more registered individuals if the flood level prediction for the geographic area exceeds a predetermined threshold.

A flood modeling system defines virtual cells of a geographic region. Some of the cells, referred to as “channel cells,” represent areas within a channel for a moving body of water, such as a stream or river. Other cells, referred to as “land cells,” represent areas external to the channels within the geographic region. The flow of water through the geographic region is modeled as a virtual flow of water through the channel cells and the land cells. For each time step, the system calculates the amount of water that virtually flows out of one cell into adjacent cells. The water estimated to virtually flow above ground represents flood water, and the estimates of such water can be used to generate an inundation map or initiate flood warnings.

The invention discloses an urban flood early warning system based on a radial basis function neural network model and a method thereof, including measuring urban road water accumulation by using an ultrasonic range finder, measuring urban river water level information by using a water level sensor, and collecting relevant The information is aggregated to the data collection terminal for preprocessing, and the processed relevant data is sent to the monitoring center server through the network. The server uses the radial basis function neural network model to predict and warn the urban flood situation, and sends the results to the relevant user's mobile terminal. Users can also log in to the server through the network to inquire about the flood situation in relevant places. The invention realizes automatic monitoring of urban road water accumulation and urban river water level changes, and performs prediction and early warning of urban flood conditions. It has the advantages of small error, high real-time performance, low cost, accurate early warning information, etc., and has good market prospects and Value.

The invention discloses an anti-flooding early warning system for a pump room, which relates to the technical field of early warning systems. Aging and other reasons can easily lead to water leakage from the water pump and pipes, and most of the pump rooms are located on the edge of the reservoir, so there may be problems of rainwater backflow inside. The input end of the pressurized water pump assembly is connected to the output end of the pump body input pipe, and the output end of the pressurized water pump assembly is connected to the input end of the water supply transfer pipe, and the input end of the pump body input pipe and the water supply transfer pipe are connected to the The input end of the water pressure sensor is connected, and the model of the water pressure sensor is set to YSE-HSM, the output end of the water pressure sensor and the pressure bearing base of the pump set is connected to the input end of the joint control data module, and the joint control data module The output end is connected with the input end of the remote alarm of the pumping station.

The invention discloses an energy-saving type flood early warning method and device for a garage. The early warning method includes the step of dormancy, wherein before the water level of the garage reaches a start water level, the early warning device is in a dormancy standby mode; the step of working, wherein when the water level of the garage reaches the start water level, a controller is activated, and the device goes into a working mode; the step of sampling, wherein after the device goes into the working mode, sampling is conducted through a water level sensor to obtain the height of the water level; the step of early warning, wherein when the value of the water level reaches a threshold value H0, a communication module is started to inform a car owner or related personnel; the step of stopping, wherein when stop conditions are met, early warning is stopped, and the device returns back to the dormancy mode. The early warning device mainly comprises a base, a digging rope, a travel switch, a floater, a digital processing chip, the communication module, a power supply for providing electric energy and the water level sensor. The dormancy mode is designed, so the device can automatically switch between the dormancy mode and the working mode; furthermore, an electronic switch can be arranged for starting and closing a related circuit module, and therefore energy consumption can be reduced to the greatest extent.

The invention proposes a flood early warning analysis method and system based on Poisson regression and spatial filtering value, which includes the frequency statistics of flood early warning events based on historical observation data of hydrological stations in a certain watershed; Hazard factor data, construct a Thiessen polygon for the coordinate points of the hydrological station to obtain the space, and decompose the eigenvalues ​​and eigenvectors; in the case of satisfying the significance test of spatial autocorrelation, carry out forward selection regression, and establish a Poisson based on spatial filtering value. Loose regression model; the selected feature vectors are added to the Poisson regression model together with the disaster-causing and disaster-pregnancy factors as independent variables, and a Poisson regression model of the frequency of flood warning events based on spatial filtering values ​​is constructed to support the realization of the frequency of flood warning events. Fit predictions. The invention can solve the defect of low fitting precision in the prior art, and can be used for the risk prediction of floods and dykes and dams at each site in the whole basin.