68 results about "River monitoring" patented technology

The invention provides a river water quality monitoring system and method. The system comprises a river monitoring platform and an automatic river monitor disposed in a monitoring area; the automaticriver monitor comprises a solar monitoring station and an unmanned monitoring boat; the river monitoring platform is used for integrated management of the automatic river monitor, management of a monitoring task and management of monitoring data; the solar monitoring station is used to monitor the water quality in a fixed position and park and charge the unmanned monitoring boat; and the unmannedmonitoring boat is used to automatically monitor the river water quality, river 3D structure and ground condition in the monitoring area. The unmanned monitor is combined with a traditional fixed monitoring station to form the complete automatic water quality monitoring system, and the problems that the fixed monitoring station cannot be moved, is limited in the monitoring range and can only realize point monitoring but the unmanned monitoring boat, or unmanned aerial vehicle, or an underground robot is short in duration for river water quality monitoring, incapable of continuous work and needs manual control at any time are overcome.

The invention discloses a data management system based on river ecological monitoring. The data management system comprises an ecological monitoring and evaluating module, a data management platform and a forecasting and early warning module, wherein the ecological monitoring and evaluating module is used for evaluating monitored river monitoring data according to multiple evaluation indicators to obtain an ecological monitoring and evaluating result of a river, and the ecological monitoring and evaluating result comprises the health condition, existing problems and development trend of a river ecological system; the data management platform can be used for managing the monitored river monitoring data and taking the ecological monitoring and evaluating result as shared data to realize information sharing and communication; and the forecasting and early warning module is used for forecasting and early warning the river based on the river monitoring data and the ecological monitoring and evaluating result. The data management system can be used for accurately and comprehensively evaluating the repair or maintenance effect of the river ecological system, thus comprehensively judging the ecological regime of the river from multiple aspects, and forecasting and early warning different emergencies.

The invention discloses an intelligent monitoring and management system and method for river water pollution monitoring and early warning and belongs to the field of monitoring technologies. With theintelligent monitoring and management system and method adopted, the problems of high manpower consumption, long monitoring period, and low river pollution control efficiency of existing river monitoring can be solved. According to the technical schemes of the invention, the system includes a network communication module, a water and rainfall information monitoring module, a water quality monitoring module, a gate pump monitoring module, a video monitoring module, a monitoring center, a river management module and a user terminal; the network communication module includes a GPRS network and anoptical fiber network; the water and rainfall information monitoring module includes a water and rainfall information monitoring device and a water and rainfall information monitoring center station;the water quality monitoring module includes a water quality monitoring station and a first server; the gate pump monitoring module, the river management module and the user terminal are all connected with the monitoring center; and the video monitoring module includes a video collection device and a second server. With the intelligent monitoring and management system and method for river water pollution monitoring and early warning adopted, river water pollution can be monitored in real time, and the efficiency of river water pollution control can be improved.

The invention relates to a self-frequency modulating piezoelectric flow energy capture device, and belongs to the field of river monitoring. A limiting frame is provided with a bottom plate and a limiting plate, wherein the bottom plate is arranged on the inner wall of a pipe; a spring plate is fixed on a plane segment, connected with the bottom plate, of the limiting plate; the spring plate is vertical to the central line of the pipe; a left half shell and a right half shell are arranged at a free end of the spring plate; a metal substrate is crimped between the end surfaces of the bottom walls of the left half shell and the right half shell; the metal substrate and piezoelectric wafers are spliced into a piezoelectric vibrator; a mass block is arranged at a free end of the piezoelectric vibrator; the piezoelectric vibrator is connected with a circuit board through a guide wire; left bosses are arranged on the front wall and the rear wall of the left half shell; right bosses are arranged on the front wall and the rear wall of the right half shell; the distance between two left bosses is equal to that between two right bosses and is greater than the width of each piezoelectric wafer and smaller than the width of the metal substrate; the left bosses and the right bosses are provided with arc limiting surfaces; and each limiting surface is tangent to the end surface of the bottom wall of the left half shell or the right half shell on which the limiting surface is located. The self-frequency modulating piezoelectric flow energy capture device has the characteristics and advantages that the flow rate adaptability is high, the effective band is wide, the reliability is high and the generating capacity is high.

The invention discloses a river dry cutoff monitoring method and device based on multi-source remote sensing images, and belongs to the field of river monitoring, and the method comprises the steps: obtaining the multi-source satellite remote sensing images of a monitoring region, and the multi-source satellite remote sensing images comprise meter-level remote sensing images and sub-meter-level remote sensing images; preprocessing the multi-source satellite remote sensing image; calculating a normalized water body index by utilizing the meter-scale remote sensing image, and extracting trunk river water body information; based on the regional river channel buffer vector data, reversely cutting a main river water body to obtain a first-level suspected dry river channel; analyzing the first-level suspected dry riverway based on the sub-meter-level remote sensing image by using an object-oriented method to obtain fine river water body information; reversely cutting the first-stage suspected dry riverway by using the fine river water body information to obtain a second-stage suspected dry riverway. According to the invention, comprehensive, objective, efficient and dynamic supervision can be carried out on the dry cutoff condition of the river, and technical support is provided for river and lake water environment evaluation, management, guarantee and restoration.

The invention relates to a self-excited piezoelectric energy harvesting device for river monitoring and belongs to the field of river monitoring. The self-excited piezoelectric energy harvesting device is characterized in that two connecting lugs are arranged on the inner wall of a pipeline; a reed is mounted on each of the connecting lugs, and a plane of the reed is parallel to a symmetric center line of the pipeline; an upper half shell and a lower half shell are connected through flanges and form a closed shell; the flange of the upper half shell or the flange of the lower half shell is connected with the two reeds; an upper boss is arranged on each of the front side wall and the rear side wall of the upper half shell, a lower boss is arranged on each of the front side wall and the rear side wall of the lower half shell, and a partition plate is arranged at the symmetric center of the two upper bosses; a limiting surface is composed of a straight section and two circular arc sections and is arranged on each of the upper bosses and the lower bosses, and the straight section is equal to the partition plate in width; a metal substrate is fixed on the partition plate through a pressing block and forms two metal cantilever beams, a coil is mounted at the free end of each of the metal cantilever beams, a piezoelectric wafer is bonded on the side surface of the metal cantilever beam, and the metal cantilever beam and the bonded piezoelectric wafer form a piezoelectric vibrator. The self-excited piezoelectric energy harvesting device provided by the invention has the advantages of being simple in structure, strong in flow rate adaptability, wide in effective frequency band, high in reliability and strong in power generation capacity.

The invention discloses a method and system for tracing a regional water environment based on a river network mathematical model, and the method comprises the following steps: S1, obtaining the pollution condition of a monitoring point through an instrument, and transmitting the pollution condition into a database; S2, by patrol personnel, patrolling the river monitoring points, uploading patrol daily reports and storing the patrol daily reports in the database; S3, calculating the possibility of each monitoring point as a pollution source according to the real-time acquired data; S4, planning regular manual detection according to the result of a risk estimation module; and S5, when sudden water pollution occurs, estimating the possibility that each monitoring point is used as a pollution source, and preferentially checking the monitoring points with relatively high historical pollution occurrence probability. The system mainly comprises a risk estimation module, a regular manual detection module, an emergency scheduling module and a database. The method solves the problems of long time consumption and high difficulty in the water environment pollution tracing link, and has the advantages of quick tracing and real-time monitoring.

The invention relates to a self-powered device for a river monitoring system and belongs to the technical field of power generation. An end part of a shell body is provided with an end cap, an inner side of a bottom wall of the shell body is provided with a limiting magnet, an outer side is provided with four ear plates, end parts of the four ear plates are connected via crossbeams in a pairwise manner, piezoelectric vibrators and an excitation reed are mounted on a boss of the en cap, and gaskets are connected in a pressed manner between fixed ends of the excitation reed and between fixed ends of two adjacent piezoelectric vibrators; the piezoelectric vibrators are formed by bonding substrates and piezoelectric wafers, butting blocks are mounted on free ends of the piezoelectric vibrators and are butted against the excitation reed, and a free end of the excitation reed is provided with a mass block and an excited magnet; two ends of a pin shaft are respectively fixed on two parallel crossbeams which are parallel to each other; a balance spring, a blunt body and a limiting spring orderly sleeves the pin shaft from bottom to top; an excitation magnet is arranged on the blunt body. Advantages of the device disclosed in the invention are that an energy harvester is a 3 degrees of freedom system, an inherent frequency of each subsystem is easy to adjust, the energy harvester is wide in frequency band, the piezoelectric vibrators are not in contact with fluid, the piezoelectric wafers are only under compressive stress, and high reliability can be realized.

The invention discloses a river ecological buffer zone remote sensing monitoring method and device based on a grid division technology, and belongs to the field of river monitoring, and the method comprises the steps: obtaining remote sensing image data, land utilization classification data and water system data; determining a river waterline according to the remote sensing image data and the water system data; outwards making a buffer area by taking the river water side line as a reference to obtain a buffer area outer side line; segmenting the outer side line of the buffer area in an equantmanner and dividing the river buffer area into a plurality of grid units; and judging the land utilization type of each grid unit according to the land utilization classification data, and determininga river ecological buffer zone distribution area. According to the invention, the current situation of the river ecological buffer zone can be rapidly monitored, and technical support is provided forriver ecological environment management.

The invention discloses an urban river water quality monitoring device. The urban river water quality monitoring device comprises a field controller for a plurality of river monitoring points, wherein the field controller is connected with a temperature sensor, a pH sensor, a conductivity sensor, a dissolved oxygen sensor, an ORP sensor, a turbidity sensor and a telescopic cylinder and is connected to a ZigBee coordinator through a ZigBee wireless module; the ZigBee coordinator is connected to a remote monitoring terminal through a GPRS module. Data monitoring and acquiring are performed on the plurality of field monitoring points by the remote monitoring terminal, remote transmission of data is realized, the acquisition efficiency is increased greatly, time and labor are more saved, the telescopic cylinder of acquisition equipment is controlled remotely, acquisition is realized by sensor telescoping as required, proneness to damage due to long-term arrangement in water is avoided, and data acquisition of the sensors is performed after the telescopic cylinder acts, and the urban river water quality monitoring device further has the characteristic of being simple and convenient to control.

The invention discloses a weight combination water quality prediction method based on a river course polymorphism calculation and Arima model. Firstly, historical water quality index monitoring data of river monitoring station is obtained, and predicted values of water quality data of next time period of river monitoring station are taken as initial predicted values based on Arima model; the predicted values of water quality data of next time period of river monitoring station are taken as initial predicted values. Then, based on the river space shape and the water quality index measured by the upstream monitoring stations, the flow ratio in the river is calculated, and the predicted value of the downstream water quality index is calculated. The spatial form includes tributaries and confluence; finally, the two predicted values are calculated by using the weight combination optimization method, and the final predicted values are obtained. Compared with the prior art, the invention notonly utilizes the characteristics of the data itself, but also considers the spatial relationship between the tributaries and the main stream, and the average error of the combined prediction value based on the Arima prediction value and the river polymorphism calculation is small, which has better accuracy and is suitable for the optimization of the prediction algorithm of the tributaries and theconfluence state.

The invention discloses a method for extracting the river monitoring section water surface width based on a remote sensing interpretation technology, and the method comprises the steps: building a Bi-LSTM model, and obtaining river flow data; and constructing a watercourse water surface width hydraulic model: solving coefficients of the watercourse water surface width hydraulic model based on remote sensing detection and a linear fitting method to obtain an optimal watercourse water surface width hydraulic model, and solving a high-precision watercourse section water surface width expression.Compared with a traditional method of directly utilizing a remote sensing technology to collect the water surface width of the river section, linear fitting is adopted, data with large errors are effectively removed, the calculation precision is improved, and the hydraulic function relation between the water surface width of the river section and the flow is truly reflected.

The invention discloses a river drought disaster situation prediction method. The method comprises the following steps that firstly, original meteorological data of a river monitoring station is collected, and the drought situation of the monitoring station is calibrated by using a standardized precipitation index (SPI); secondly, the drought indexes at different time scales are calculated, and the indexes are subjected to interpolation; thirdly, according to the area chart layers of cities and counties in the river valley, the average drought state of the cities and counties is calculated; fourthly, drought prediction is conducted on the monitoring station by using two-dimensional Copula. By means of the method, continuous, dynamic, quantitative and visual monitoring and analytical investigation on the disaster situation in Huaihe River valley can be conducted at the fine space scale, the analysis information about various drought indexes can be provided for users in various forms like a chart, and decision support and information service are provided for prevention and reduction of the disaster.

The invention discloses a drainage basin water environment quality ecological compensation method, which comprises the following steps of (1) obtaining drainage basin provincial-controlled river monitoring cross section water quality monitoring data; (2) performing quarter checking on the provincial-controlled cross section water environment quality improvement condition in each district division city; performing business accounting in each quarter according to a formula; issuing eco-compensation fund; (3) performing one-time added bonus on the single provincial-controlled cross section stably reaching the ground surface water environment district division or excellent water quality control requirements; performing business accounting in each year; issuing the next one-time added bonus; performing annual continuous penalty on the single provincial-controlled cross section incapable of stably eliminating five kinds of water bodies; accounting compensation fund in each year according to the method. The step is simple; the method is convenient; the practicability is high.

The invention relates to a piezoelectric type hydro-generator used for river monitoring, and belongs to the field of river monitoring. The end part of a thick pipe wall of a left pipe and a flange at the end part of a right pipe wall are connected to form an annular cavity; a rotary plate is arranged in the annular cavity, wherein blades are arranged on the inner edge, rolling beads are arranged on the outer edge, and exciting magnets are arranged on the two sides of the rotary plate respectively; the each rolling bead props against the sliding way in the thick pipe wall of the left pipe; a framework is mounted on the bosses on the left pipe thin pipe wall and the right pipe wall; a pin shaft is arranged in the guiding holes in the front and back side plates of the framework in a sleeving manner; the pin shaft is sleeved with guiding plates and internal and external springs; an excited magnet is mounted at one end, close to the front side plate, of the pin shaft; the guiding plate close to the front side plate is fixed by a clamping spring; the internal and external springs are arranged on the two sides of the front side plate; the two ends of a metal substrate of a piezoelectric vibrator are fixed on the fixed guiding plate and the back side plate; and the substrate between two adjacent piezoelectric crystal plates is fixed on the slidable guiding plate. The piezoelectric type hydro-generator has the advantages that the flat and straight piezoelectric vibrator is mounted with a bending structure, so that the piezoelectric type hydro-generator is simple in process and low in cost; the piezoelectric crystal plates only bear pressure stress, so that high reliability is achieved; and in addition, the electric energy production can be increased easily by increasing the number of the piezoelectric vibrators and prolonging the length of the piezoelectric vibrators.

The embodiment of the invention discloses a river information management system, and the system comprises a cloud server which is used for responding to a river information processing request transmitted by a terminal, carrying out the data processing based on stored river monitoring data, and feeding back a data processing result to the terminal; a terminal which is used for sending a river information processing request to the cloud server according to a user processing demand and visually displaying a received data processing result; and a mobile terminal which is used for responding to theriver patrol authority authentication request of the user, confirming the river patrol authority of the user, acquiring river patrol data acquired by the user if the river patrol authority authentication is passed, and transmitting the river patrol data to the cloud server as river monitoring data. According to the river information management system, the construction cost and the operation and maintenance cost of the river information management system can be reduced, and the river information is efficiently managed.

The invention relates to an indirect-excitation-type self-generating device for a river monitoring system and belongs to the field of river monitoring. An outer housing is internally provided with an inner housing; the right end of the inner housing is provided with an inner housing bottom wall, and the left end is provided with an end cover; and the end cover is provided with two piezoelectric vibrators and a force application reed. The end portion of each piezoelectric vibrator is provided with a push block; each push block is abutted against the force application reed; and the end portion of the force application reed is provided with excited magnets and a frequency modulation mass block. The inner housing bottom wall is embedded with fixed magnets. The fixed magnets and the excited magnets are in opposite pole opposite arrangement. A pin hole in a swing arm of an exciter is sleeved on a pin shaft. The two ends of the pin shaft are fixedly arranged to inner housing ear plates respectively. One end of the swing arm is provided with a flow turbulence body, and the other end is provided with exciting magnets. The exciting magnets and the excited magnets are in opposite pole opposite arrangement. The two ends of a balance reed are arranged to an inner housing connection plate and an exciter connection plate respectively. The indirect-excitation-type self-generating device has the advantages that an energy capture device is a 3-degree-of-freedom system, and is wide in frequency band; the piezoelectric vibrators do not contact with the fluid; a piezoelectric wafer only bears pressure stress and the fixed magnets can realize amplification and limitation; and the self-generating device is high in reliability and large in generating capacity.

The invention provides a method for monitoring and evaluating a river by using unmanned aerial vehicle surveying and mapping. The method comprises the following steps: acquiring image data by using anunmanned aerial vehicle; reconstructing the image data by using a motion recovery shape algorithm to construct 3D topographic information; utilizing a Vextractor program to speculate the basic shapeof the river streamline on the 3D topographic information according to the image data, and fitting the basic shape into a river curvature index of the main river channel section; calculating an ortho-image spectral index by using an RGB ortho-image measurement program to obtain river quantitative and qualitative information; and evaluating the physical environment of the river according to the curvature index and the quantitative and qualitative information of the river. The invention provides a river monitoring and evaluating method. The unmannedaerial vehicle is taken as the infrastructure,a motion recovery shape algorithm, a Vextracto program and an RGB ortho-image measurement program are utilized to track the eutrophication process in the large river and reflect the change process ofeutrophication and vegetation overgrowth, and the method has very important application value for long-term monitoring and ecological restoration of the large river.

The invention provides a river monitoring and early warning method and system, and belongs to the technical field of monitoring, and the method comprises the steps: collecting water body information and floating object information in a river reach, wherein the water body information comprises the flow speed and flow direction of a water body in the river reach, and the floating object informationcomprises the orientation and speed of a floating object in the river reach; dynamically tracking the floating object based on the floating object information to determine a target floating object; determining the relative speed of the target floating object based on the floating object information and the water body information; and if the relative speed of the target floating object is within the preset range, outputting early warning information to indicate that an out-of-control floating object exists in the current river reach. According to the river monitoring and early warning method and system, the floating object on the river can be tracked and monitored in real time, and when it is found that the floating object is in an out-of-control state, the situation is reported in time, sothat related management departments take treatment measures in time.

The sediment-containing river flow monitoring device comprises a sliding groove and a main body, a torsion motor is arranged at the top end of the sliding groove, a screw rod is installed at the output end of the torsion motor, and sliding blocks are arranged in the sliding groove; a driving motor is arranged on one side of the sliding groove, and a winch and an inhaul cable are arranged at the output end of the driving motor. The sliding groove, the sliding block, the screw and the torsion motor are matched, the detection body slides in the stroke of the sliding groove, river monitoring at the same point position and different depths is completed, and the monitoring depth does not need to be manually adjusted; the capstan and the inhaul cable are arranged, the sliding block exceeds the limiting position of the sliding groove, the main body is separated from the sliding groove and sinks to the water bottom, hydrological monitoring of a riverbed and the water bottom is conducted along with the river flow direction, the application range of the device is widened, multi-device sampling is not needed, and the using number of sampling devices is reduced; the sliding plates are slidably mounted on the mounting plate, silt particles with different particle sizes are filtered and intercepted by replacing the filter screens, and flow monitoring of the silt particles in different states is completed.

The invention discloses a river monitoring system and method based on array type spherical piezoelectric-triboelectricity composite energy collection. The river monitoring method comprises the steps of: collecting the energy caused by the vibration of balls floating on a river due to the flowing of the river through using an array type spherical piezoelectric-triboelectricity energy collector; outputting electric energy in a piezoelectric mode and a triboelectric mode, storing collected energy in a capacitor through using a rectifying circuit and an energy collecting and storing device, and supplying power to all parts of a river monitoring device. When the river monitoring system and the method are applied, the river environment information collected by a river monitoring sensing device is sent to a base station in a wireless mode and then displayed on user terminal equipment. According to the river monitoring system, river kinetic energy is converted into electric energy and stored in the super capacitor, the energy conversion efficiency is high, and self power supply of the river monitoring device is achieved; meanwhile, river energy is fully utilized, and benefits are brought to environment-friendly development.

The invention relates to the technical field of dam slope protection, and discloses a system for realizing dam slope protection based on a convolutional neural network. Through the creation of the invention, a dam slope protection system scheme for carrying out slope vegetation automatic irrigation management based on the convolutional neural network is provided, that is, the dam slope protection system comprises a river monitoring server, a river monitoring terminal, a rain gauge, a mounting frame, a vertical rod and at least one dam slope protection unit arranged on a target dam, the river monitoring server can train a CNN model used for identifying a rainfall level based on a historically acquired weather forecast image and a rainfall value, and can estimate an angelica keiskei rainfall level (local rainfall of a next irrigation period) through the trained CNN model after an angelica keiskei weather forecast image is acquired. And then a self-adaptive watering control instruction is sent according to a pre-estimation result, so that the purpose of performing automatic watering management on slope protection vegetation is achieved, manpower and material resources can be saved, and the maintenance cost of the slope protection is reduced.

The invention discloses a passive telemetry robot based on a live-action three-dimensional map and a measurement method, which aim to identify, position and track a target, obtain accurate three-dimensional geodetic coordinates of the tracked target in real time through a real map and a live-action image, visualize the real environment around the tracked target, visually observe the real environment where the tracked target is located, pre-warning related personnel and reminding to make decisions. The method can be widely applied to the fields of land management and control, river monitoring, precision agriculture, traffic monitoring, public security prevention and control, water administration law enforcement, forest resource checking and the like.

The invention relates to a piezoelectric energy harvester for river monitoring, and belongs to the technical field of piezoelectric power generation. The piezoelectric energy harvester is composed ofsquare magnets, piezoelectric vibrators, a supporting column, sealing boxes, circular magnets, screws, a bluff body and an elastic beam, wherein the upper and lower portions of the support column arerespectively connected with one sealing box, the middle of the supporting column is connected with one elastic beam, the elastic beam is vertically installed on the supporting column and is integrallyin an E shape after being installed, the far end of the elastic beam is connected with the turbulent flow bluff body, the bluff body is formed by splicing two semi-cylinders and fastened to the elastic beam through screws, the position of the bluff body on the elastic beam can be adjusted so as to change excitation force and excitation frequency, the circular magnets are mounted on the two sidesof the bluff body, the piezoelectric vibrators and the square magnets are symmetrically installed in the sealing boxes, when fluid flows through the bluff body, the bluff body generates self-excited vibration under the action of the fluid, and the square magnets on the piezoelectric vibrators in the sealing box drive the piezoelectric vibrators to vibrate under the action of magnetic coupling, sothat piezoelectric power generation is carried out.

The invention provides a river network water quality monitoring method and device and a readable storage medium. The river network water quality monitoring method comprises the following steps: acquiring first data of all river monitoring sections; acquiring second data of an enterprise sewage draining exit in the river network; acquiring meteorological data of the river network; adopting a neural network model to obtain predicted flow and predicted water level of all river monitoring sections; and adopting a hydrodynamic model and a water quality model to obtain a simulation result of the river network. According to the technical scheme, water environment simulation is carried out on the river network, the water environment condition of the river network can be obtained more visually, the water environment in the whole river basin range of the river network is monitored more comprehensively, and the overall condition of the whole river network is mastered conveniently.

The invention relates to an indirect excitation type piezoelectric energy harvester for river monitoring and belongs to the field of piezoelectric power generation. An inner shell is arranged inside an outer cylinder. Piezoelectric vibrators and excitation reeds are arranged on the boss of the inner shell. The free ends of the piezoelectric vibrators are provided with suspended magnets. The free ends of the excitation reeds are provided with suspension magnets, frequency-modulated mass blocks and excited magnets. An end cover is arranged on the end portion of the sidewall of the inner shell. Limiting magnets are arranged on the end cover and the inclined boss of the inner shell. The same magnetic poles of the limiting magnets and the suspended magnets are oppositely arranged. Rollers are arranged on the end cover and inside a bearing on the left side of the inner shell. The rollers are embedded with excitation magnets. A rolling disc on the right side of the rollers is embedded with a driven magnet. The left end surface of the rolling disc and the bottom wall of the end cover are provided with buffer reeds. A shaft sleeve with a blade is arranged in a right bearing of the inner shell. The shaft sleeve is embedded with a driving magnet. Before the installation process, the piezoelectric vibrators are of a flat and straight structure. After the installation process, the piezoelectric vibrators are of a bent structure due to the action of the magnetic force.

The invention belongs to the river monitoring technical field and provides a control system and control method for river monitoring. The control system comprises an unmanned aerial vehicle, a vehicle-mounted mobile base station, a general command end and a plurality of ground fixed base stations; the unmanned aerial vehicle transmits collected video and digital information to the general command end through the vehicle-mounted mobile base station so that the general command end can monitor a river and send control commands to control the flight status of the unmanned aerial vehicle through the vehicle-mounted mobile base station; and the plurality of ground fixed base stations are used for providing wireless coverage to allow the unmanned aerial vehicle to interact with the general command end through the vehicle-mounted mobile base station. According to the control system and control method for river monitoring of the invention, the unmanned aerial vehicle is utilized to acquire the video and digital information and interact with the general command end through the vehicle-mounted mobile base station; and therefore, the river can be automatically monitored, work efficiency can be improved, and risks and potential dangers can be decreased.

The invention relates to a river monitoring device based on piezoelectric stacks and belongs to the field of river monitoring. A casing comprises a flow gathering pipe and a straight pipe, wherein a spoiler body and an inner barrel are mounted on the inner wall of the straight pipe through a rib plate I and a rib plate II respectively, and the center line of the spoiler body is perpendicular to the center line of the inner barrel; end covers are mounted at two ends of the inner barrel, and a sensor I, a sensor II and a circuit board provided with an emitting unit are inlaid on the left end cover; a left half shaft of a stepped shaft extends out of a center hole in the left end cover, and an exciter is mounted at the end part of the left half shaft; the left half shaft is sleeved with a pretightening spring, and the pretightening spring is propped against the left end cover and a shoulder of a right half shaft of the stepped shaft; the right half shaft crimps the piezoelectric stacks on the right end cover through an anti-torsion plate. The river monitoring device has the advantages as follows: power is generated under the solid-fluid action without outside energy and electromagnetic interference, and true real-time online monitoring can be realized; the monitoring device is simple in structure, has small radial dimension and easily acquires required energy through series connection of the multiple piezoelectric stacks; structure parameters of a power generation unit are reasonable, and the energy conversion efficiency and the reliability are high.

The invention aims to provide a water conservancy river remote monitoring system and method based on a cloud platform. The water conservancy river remote monitoring system comprises collection equipment which is used for collecting rainfall data, and water flow velocity and water quality data of a river, wherein the collection equipment is electrically connected with a controller, and the controller is wirelessly connected with the cloud platform; and the system further comprises floating equipment which is used for enabling the collection equipment to float on the river, the floating equipment is provided with a driving assembly used for driving the collection equipment and controlling the moving direction of the collection equipment, and the input end of the driving assembly is electrically connected with the output end of the controller; the collection equipment is further provided with positioning equipment used for self-positioning, and the output end of the positioning equipment is electrically connected with the controller; and the cloud platform responds to a feedback signal of the positioning equipment and controls the floating equipment to move directionally. The problem that a water quality detection point is fixed and the detection position is difficult to replace during existing water conservancy river monitoring is solved, and the water conservancy river remote monitoring system and the method have the effect of improving the water quality data detection accuracy.

The invention discloses a machine vision-based water level detection method and a river channel monitoring method. The water level detection method includes the following steps: first obtain a water gauge with the following structure, including a water gauge body, and a water gauge line is coated on the water gauge body , the water gauge line includes a characteristic color line painted vertically, the two sides of the characteristic color line have scale line blocks arranged alternately along the length direction, and the scale line blocks include three characteristic scale lines arranged at intervals, Both the characteristic scale line and the characteristic color line are painted in red, and a white scale line is painted between two adjacent characteristic scale lines, so that the scale line block and the characteristic color line form an "E" shape; The area between the tick mark blocks on one side is painted with a blue color block, and the area between the tick mark blocks on the other side is painted with numbers. The invention has the advantages of not needing to identify characters of the water gauge.