46 results about "River level" patented technology

The invention discloses a non-contact river surface velocity measurement based regression calculation method for an instantaneous flow rate. According to the method, river multipoint surface flow velocities Vi and a river level height H are measured simultaneously through a non-contact method, a river section area S is obtained according to the river level height H, S is a function of H, that is, S=(S)H, a river surface average flow velocity is obtained according to river multipoint surface flow velocities Vi as following, and then a formula that M=K*Vs*S is used for calculating a river section instantaneous flow rate, wherein Vs is the river surface average flow velocity, and S is the river section area obtained according to the river level height. By the aid of the method, the instantaneous flow rate of a river can be calculated through surface flow velocities, river levels and section data provided by a non-contact velocity measurement technology, the proximity of the data obtained through non-contact measurements to data obtained through manual measurements is high, the error is small, and non-contact measurements can completely substitute for manual measurements.

To provide a river water level predicting apparatus which predicts the water level of a river with accuracy. The river water level predicting apparatus 1 comprises a water level measuring section 5 for measuring the water level of the river 4 and storing therein a measured value, rainfall measuring sections 7, 8 for measuring rainfall quantities of a river 2 and the river 4 and storing therein the quantities, and a water level predicting model 20 for predicting the water level of the river, based on the measured values. The water level predicting model 20 has an autoregressive portion and an FIR model portion, and the model 20 is identified by a model identifying section 21. The model identifying section separately calculates a parameter for the autoregressive section and a parameter for the FIR model section, based on the measured values.

Artificial-intelligence-based river information system. In an embodiment, a first training dataset is used to train a travel time prediction model to predict a travel time along the waterway for a given trip. In addition, a second training dataset is used to train a river level prediction model to predict a river level along the waterway for a given time. For each of a plurality of trips, a request is received that specifies the trip and a time of the trip, and, in response to the request, the travel time prediction model is used to predict a travel time for the trip, and the river level prediction model is used to predict a river level of the waterway at one or more points along the trip. Then, a voyage plan is generated based on one or both of the predicted travel time and the predicted river level.

The invention discloses a natural energy power multifunctional generation device. Every blade is provided with an opening and a throttle door for opening and closing the opening, and the throttle door can rotate to open or close the opening within a range of 0-180 degree; by adjusting the pressure of the blades at various rotation positions, the pressure difference among the blade can be high, so that the energy source utilization rate is high, and vortexes can be avoided, further the natural energy power multifunctional generation device can rotate under high flow velocity as well as low flow velocity to generate electricity. The natural energy power multifunctional generation device can generate electricity through wind energy, river water energy and wave energy. The invention also discloses an overflow dam river basin power generation system. The overflow dam river basin power generation system is that a plurality of the natural energy power multifunctional generation device are horizontally arranged on a river way and achieves the water level raising function like as an overflow dam, the natural energy power multifunctional generation device can be arranged in a multi-stage mode in river basins to generate electricity through the water sources repeatedly and meanwhile play a role of raising the water level of rivers, and when river flow is small, parts of the natural energy power multifunctional generation device can be closed. Therefore, the overflow dam river basin power generation system can increase the water level of the river as well as generate electricity, thereby achieving the effects of water storage, electricity generation and landscape improvement.

The invention relates to a river level test instrument part which comprises a statocyst and a cone water gauge. An automatic balancing water inlet device is mounted in the statocyst; a detection instrument barrel and a buoy are mounted on the left side of the cone water gauge; a balancing weight is mounted at the lower end of the detection instrument barrel; the statocyst is connected with a cross bar by the balancing weight; a detection sensor is mounted at the middle part of the cross bar; the buoy is welded with the detection instrument barrel by a connecting base; the statocyst and the detection instrument barrel are respectively mounted at both sides of the cross bar. According to the invention, by arranging the statocyst, the cone water gauge, the cross bar and the detection sensor, the river level test instrument part is helpful for measuring an integral position of a balancing part and a water level, fixing the balancing part and mounting the detection sensor; by arranging the buoy, the detection instrument barrel and the connecting base, the river level test instrument part is helpful for achieving a part floating function, mounting a detection instrument and connecting and fixing the buoy and the cone water gauge.

The invention relates to the technical field of hydraulic power generation, in particular to a river channel power generation system. The river channel power generation system comprises a floating plate, a floating ball, a guide bracket, a guide cover, a propeller and a permanent magnet generator; the floating ball is connected with the head part of the guide bracket through a spring; the tail part of the guide bracket is fixed with the floating plate; the guide cover is under the middle back part of the floating plate; the permanent magnet generator is arranged in the guide cover, and is fixed in the guide cover through a bracket; and the propeller is arranged in a back outlet of the guide cover, and is connected with a rotating shaft of the permanent magnet generator. The river channel power generation system has the beneficial effects of power generation by using the river water flowing speed, no influence from the river level, no need of building a dam and no influence on ecological environment.

Artificial-intelligence-based river information system. In an embodiment, a first training dataset is used to train a travel time prediction model to predict a travel time along the waterway for a given trip. In addition, a second training dataset is used to train a river level prediction model to predict a river level along the waterway for a given time. For each of a plurality of trips, a request is received that specifies the trip and a time of the trip, and, in response to the request, the travel time prediction model is used to predict a travel time for the trip, and the river level prediction model is used to predict a river level of the waterway at one or more points along the trip. Then, a voyage plan is generated based on one or both of the predicted travel time and the predicted river level.

The invention relates to a river flow velocity and water level inversion method of a land-based GNSS reflectometer. The river flow velocity and water level inversion method comprises the following steps: acquiring a reflection signal of a GNSS signal on a river surface in a land-based scene; estimating the Doppler frequency of the reflected signal by using a Gaussian fitting method according to the reflected signal; according to the reflected signal Doppler frequency, inversing the river flow velocity by using a reflected signal bistatic geometrical relationship; obtaining a coherent signal and an incoherent signal of the reflected signal; determining an accumulation ratio according to the coherent signal and the incoherent signal; when the accumulation ratio is smaller than a set threshold value, using the fuzzy scene for water level inversion, and determining the height of the receiver relative to the river surface; when the accumulation ratio is greater than or equal to a set threshold value, performing water level inversion by using the coherent scene, and determining the height of the receiver relative to the river surface; and determining the river level according to the height of the receiver relative to the river surface and the elevation of the receiver relative to the ground. According to the invention, low-cost and high-precision detection of the flow velocity and the water level of the river can be realized.

The invention relates to an urban drainage, water replenishment and water exchange pump station hub which is designed for solving the technical problems of the poor management of similar pump stations, the poor urban drainage, water replenishment and pollution control effects and too high reconstruction cost. The hub comprises a water replenishment pump station and a water drainage pump station, wherein the water replenishment pump station is located on an outland river on the side of a main river channel, and the water drainage pump station is arranged in an urban inland river. The urban drainage, water replenishment and water exchange pump station hub is characterized in that an underground pipeline for achieving communication of the two pump stations is arranged between the water replenishment pump station and the water drainage pump station, and the water replenishment pump station and the water drainage pump station are provided with an outland river sluice and an inland river sluice correspondingly, and are each provided with a control system. The underground pipeline design can save land, and meanwhile, when the water level of the inland river is too high, drainage is carried out through the water drainage pump station; when the water level of the inland river network is too low, water is supplemented through the water replenishment pump station and the underground pipeline; and when the inland river network is polluted, water is exchanged through the water drainage pump station and the underground pipeline. The structure is simple, the design is reasonable, the construction cost is low, the investment is small, and the effects of drainage and pollution control are good; and the urban drainage, water replenishment and water exchange pump station hub is suitable for new construction and reconstruction and upgrading of urban pump stations.

To provide a river water level predicting apparatus which predicts the water level of a river with accuracy. The river water level predicting apparatus 1 comprises a water level measuring section 5 for measuring the water level of the river 4 and storing therein a measured value, rainfall measuring sections 7, 8 for measuring rainfall quantities of a river 2 and the river 4 and storing therein the quantities, and a water level predicting model 20 for predicting the water level of the river, based on the measured values. The water level predicting model 20 has an autoregressive portion and an FIR model portion, and the model 20 is identified by a model identifying section 21. The model identifying section separately calculates a parameter for the autoregressive section and a parameter for the FIR model section, based on the measured values.

The present invention relates to a method for forecasting and early warning of urban inland river water levels. First, the distribution of urban historical waterlogging points is counted, and the set of waterlogging points is set as {M 1 ,M 2 ,...,M n}; According to the topological structure of the regional pipe network, find the outlet of the rainwater pipe network that discharges the accumulated water at the waterlogging point to the inland river, and set a warning section at the outlet position; then, based on the design method of the urban rainwater pipe network and the physical laws of urban drainage, through the warning The calculation method of water level, calculate the warning water level of different warning sections, take the water level of inland river as the critical condition of early warning of urban waterlogging disaster; determine the water level unit line of warning section; in the process of real-time forecast and early warning, calculate the warning water level based on rainfall forecast and water level unit line of warning section The section water level process is the water level forecast result under the corresponding rainfall process; when the predicted or measured warning section water level reaches the warning water level, this moment is the inland river water level warning time. The invention provides the calculation method of the warning water level for the waterlogging early warning scheme, and effectively reduces the urban waterlogging disaster loss.

A sensitivity analysis method for the change of a river level caused by river bed evolution due to human intervention comprises the following steps: collecting runoff data in a riverway area to be evaluated since hydrological records, determining the dominant discharge, and selecting the dominant formative runoff date according to the type of a tide to actually measure tide level processes at the river mouth; acquiring actually measured natural river bed topographic maps before and after the dominant formative runoff date; acquiring natural river bed geological data, determining burial depths and widths of sand beds on cross sections; determining the characteristic parameters of bed load and suspended load through a soil test; establishing a flow and sediment mathematics calculation model according to the basis data; determining the bed roughness of the natural river bed according to water level validation, sand content validation of the suspended load, and erosion and deposition validation of a terrain; dividing the river bed area into four areas according to the river sand reserves and the river sand distribution of the natural river bed; forecasting the influence of artificially dredging on a future riverway level change rule in different areas.

The invention discloses a monitoring method of a remote monitoring device for the groundwater recharge effect of a water system river network, which solves the problem that the detection method in the prior art consumes a lot of labor, and has the ability to realize remote real-time data acquisition and accurately obtain relevant information about the groundwater recharge effect The beneficial effect, the specific scheme is as follows: a remote monitoring device for the groundwater recharge effect of the river network, including at least one measuring cylinder, the bottom of which can be inserted into the river channel soil or slope, and is installed in the measuring cylinder for clamping the water level The clamping ring of the sensor, the clamping ring can be opened and set, the water level sensor is used to monitor the water level information of the water in the measuring cylinder, and transmit the monitored information to the electronic device client; the electronic device client decomposes the obtained water level information to obtain the river water Vertical seepage velocity and lateral seepage velocity for groundwater recharge to analyze the effect of groundwater recharge with changes in river water level.

The invention relates to a water level and water flow velocity integral measuring device and belongs to the technical field of automatic detection. The water level and water flow velocity integral measuring device is characterized in that dual functions of simultaneously measuring the river water level and the water flow velocity are realized, and the measuring device consists of a balance weight block 1, a flow velocity sensor 2, a weighing sensor 3, a steel wire rope 4, a pulley 5, a weighing cable 6, a measuring cable 7, a cable 8, a waterproof junction box 9, a motor 10, a speed reducer 11, a steel wire rope rolling tube 12, a coding sensor 13, a water level intelligent meter 14, a flow velocity intelligent meter 15, a weighing intelligent meter 16, a water level display screen 17, a flow velocity display screen 18 and a weight display screen 19. The water level and water flow velocity integral measuring device has the advantages that the on-line continuous measurement for the river level and the water flow velocity in the fixed place, at the fixed time and in the fixed height is realized, and the water level and water flow velocity integral measuring device is applicable to the fields of water conservancy, hydrology and the like.