1540results about How to "Stable output" patented technology

An output drive circuit includes: a totem-pole output including: a high-side transistor (HST) with drain and source, an output stage power supply voltage applied to the drain, the source connected to the first node (N1); and a low-side transistor with source and drain, a ground voltage applied to the source, the drain connected to N1; and a bootstrap part including a capacitor supplying charge to a gate of HST when on, the charge being charged when HST is off, and one terminal of the bootstrap part connected to N1, the output drive circuit further including: a first transistor (T1) that conducts when HST is to be on, T1 connected between a drive circuit power supply voltage and the gate of HST; and a second transistor conducting when HST is to be turned on, the second transistor connected between the other terminal of the capacitor and HST gate.

The invention relates to an optical storage cooperative control optimization method, electronic equipment and a medium. The method comprises the steps of collecting historical energy consumption and photovoltaic data of a park, constructing a photovoltaic electronic model based on the data, performing day-ahead prediction by adopting CNN-BiGRU, and generating a load power and photovoltaic generation power sequence; calculating the electricity consumption and the photovoltaic generating capacity of each time period; setting the capacity of an energy storage module, and calculating the energy storage charging and discharging capacity based on an SOC formula; according to the electricity consumption, the generating capacity and the energy storage capacity, determining a peak section discharge demand; photovoltaic fluctuation constraint is combined, and energy storage charging and discharging power is adjusted to stabilize fluctuation; optimizing load power utilization, photovoltaic power generation and energy storage power scheduling based on the power balance relation; and constructing a revenue maximization objective function, establishing a light storage collaborative optimization model in combination with constraints, and solving an optimal operation scheme of a prediction day. According to the method, photovoltaic power generation errors are reduced, power output is balanced, power grid requirements are met, the photovoltaic consumption rate is improved, healthy operation of the system is guaranteed, and operation benefits are improved.

The invention provides a crop accurate management method and system based on a crop growth model. The method comprises the following steps: collecting environment data of a crop growth period by integrating a remote sensing technology, a field intelligent sensor and an unmanned aerial vehicle, and carrying out space-time alignment to form a comprehensive environment data set; and dynamically adjusting parameters of the crop growth model by using a Bayesian rule, evaluating the influence of environmental uncertainty on crops in combination with Monte Carlo simulation, and providing yield prediction with a confidence interval. Based on the prediction, a particle swarm optimization algorithm is applied to formulate management schemes such as irrigation, fertilization, pest control and harvesting opportunities, and meanwhile, a multi-objective optimization strategy is adopted to balance economic benefits and environmental protection. After the scheme is implemented, the crop growth response is monitored in real time so as to reinforce learning and automatically adjust management measures, and precise agricultural management is realized. According to the technical scheme provided by the embodiment of the invention, the crop management precision and efficiency are improved.

The invention relates to a gas sensing compensation method and device and computer equipment, and the method comprises the steps: obtaining original output signals of a gas sensor under various environmental conditions within a preset time, and recording corresponding environmental parameters at the same time; based on the collected original output signals and the corresponding environment data, a gas compensation model used for describing the internal relation of sensor output, environment parameters and actual gas concentration is constructed; the method comprises the following steps: acquiring current environmental parameters in real time through a gas sensor, inputting the current environmental parameters into a gas compensation model, and carrying out correction calculation on output signals of the gas sensor through the gas compensation model to obtain compensated gas concentration signals so as to realize omnibearing correction of measurement errors caused by various factors. The gas sensor can stably and accurately output measurement results under complex and changeable environmental conditions, reliable data support is provided for application in various fields, and the overall performance and practicability of the gas sensor are improved.

The invention relates to a switching power supply control method, system and device and a storage medium, and the method comprises the steps: monitoring the voltage and current of the output end of a switching power supply, and the rate and amplitude of load change, and obtaining the real-time data of the load change; according to the real-time data of the load change, the change of the current load is identified, and a load change mode is obtained; dynamically adjusting operation parameters of the controller according to the load change mode; based on the real-time data of the load change, predicting the load change trend of the switching power supply in real time by using a pre-trained load prediction model to obtain a prediction result, and generating a disturbance compensation signal based on the prediction result; and adjusting the switching state of a switching circuit of the switching power supply according to the control parameter adjusted by the controller and the disturbance compensation signal. The switching power supply has the effect of improving the stability of the switching power supply.

The invention relates to an extended-range resonant photoacoustic cell for acetylene detection and a detection method thereof, belongs to the technical field of partial discharge in a high-voltage insulating transformer, and provides the extended-range resonant photoacoustic cell for acetylene detection in order to solve the problem that a photoacoustic spectrum detection device is poor in sensitivity. Comprising a first buffer cavity, a second buffer cavity, a laser, four reflectors, a photoelectric detector and a controller which are arranged in a shell, and a resonance gas chamber is arranged between the first buffer cavity and the second buffer cavity so as to communicate the first buffer cavity with the second buffer cavity; the laser is located on one side of the first buffer cavity. The four reflectors are symmetrically arranged in the first buffer cavity and the second buffer cavity in pairs respectively; the photoelectric detector is used for detecting optical signals; the microphone is used for sound signals; the controller is used for processing the optical signal and the acoustic signal to obtain a detection result of the characteristic gas. The four reflectors not only can increase the absorbance, but also can realize continuous monitoring and improve the detection sensitivity.

The invention relates to the technical field of ramie seed vigor evaluation methods, in particular to a ramie seed vigor evaluation method and system based on multispectral image analysis, and the method comprises the following steps: collecting a multispectral image and a photoautotrophic fluorescence image of a ramie seed to be detected; constructing a feature matrix of the multispectral fluorescence image, extracting a feature clustering center based on a feature clustering decomposition algorithm, and forming spectral feature data of the ramie seeds; carrying out dimensionality reduction on the feature matrix based on singular value decomposition to generate spectral principal components of the ramie seeds; projecting a spectral principal component to a low-dimensional feature matrix based on nonlinear embedded mapping; generating a spectral index matrix based on the low-dimensional feature matrix; and inputting the spectral index matrix into a depth inversion prediction model to obtain the vigor index of the ramie seeds, and effectively solving the problems of information loss and overlapping in the dimension reduction process in the traditional technology through the feature clustering decomposition and singular value decomposition technology in the processing stage of the multispectral image data.

The invention relates to the technical field of lasers, in particular to a semiconductor laser structure of an integrated pumping source, which comprises a pumping light reflection cavity, a pumping light source, a pumping light source and a semiconductor laser, the plurality of pump chips are arranged in the pump light reflection cavity, and the plurality of pump chips are arranged on the inner wall of the bottom of the pump light reflection cavity along the circumference of a preset circle; the gain chip is arranged in the pump light reflection cavity, the gain chip is located on the inner wall of the bottom of the pump light reflection cavity, the gain chip is located at the circle center of the preset circle, and the gain chip is provided with a working face facing the inner wall of the top of the pump light reflection cavity; the pumping chips are used for emitting multiple beams of sub-pumping light, the multiple beams of sub-pumping light are reflected by the inner wall of the top of the pumping light reflection cavity and then converge on the working face to form a circular pumping light spot, and the circular pumping light spot pumps the gain chip so that the gain chip can output laser beams from the working face. The laser module is at least beneficial to realizing small size, integration and high performance of the laser module.

The invention discloses a method for correcting a laser gas concentration sensor, which is used for measuring gas concentration by using laser with different wavelengths and correcting by combining environmental parameters. The method comprises the following steps: extracting laser absorption characteristics by using a first feedforward neural network, extracting environmental matrix characteristics by using a convolutional neural network, fusing the characteristics through an attention mechanism, and predicting the gas concentration through a second feedforward neural network. The loss function not only considers the difference between the predicted value and the true value, but also comprises the physical constraint between the light intensity value and the theoretical light intensity value. According to the method, the measurement accuracy and the model robustness under different environmental conditions are improved, and the influence of measurement errors and environmental fluctuation is reduced through the combination of multi-wavelength measurement and physical knowledge.

The invention belongs to the technical field of genetic engineering, and discloses a Yarrowia lipolytica engineering strain capable of efficiently producing eicosapentaenoic acid through a cofactor strategy, Yarrowia lipolytica Po1f is used as an original strain, and genes of delta 9 elongase, delta 8 desaturase, delta 5 desaturase and delta 17 desaturase are over-expressed, so that the eicosapentaenoic acid can be efficiently produced. And simultaneously overexpressing glucose-6-phosphate dehydrogenase (G6PDH) and malic enzyme (ME) to obtain the gene. The construction method is suitable for constructing a genetic engineering strain for producing eicosapentaenoic acid, the aim of simply, conveniently, effectively and accurately constructing the strain is achieved, the constructed engineering strain is further applied to production of eicosapentaenoic acid, and an effective way is provided for commercially producing eicosapentaenoic acid by applying yarrowia lipolytica.

The invention relates to a czochralski method-based crystal growth interface shape detection method and device. The method comprises the steps that: a seed crystal temperature T and an interface electromotive force U at the same time in a crystal growth process are collected, and a T-U curve of the interface electromotive force U changing with the seed crystal temperature T is obtained; the change trend of the shape of a crystal growth interface in real time is judged by observing the deviation between the T-U curve and a reference line, wherein the reference line is a straight line passing through the starting point of the T-U curve, and the slope of the straight line is the Seebeck coefficient of the crystal. The invention also relates to a device used by the method. The detection method provided by the invention can detect the change trend of the shape of the crystal growth interface in real time in the crystal growth process, and can be applied to Czochralski method growth equipment for various single crystals such as lithium niobate, lithium tantalate, sapphire, yttrium aluminum garnet and the like.

A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic assembly and a valve body assembly, a guide-in valve sub assembly of the valve body assembly adjusts flow through a throttling valve piece, then adjustment of damping bandwidth is achieved, and the electromagnetic assembly is matched with a pilot hole and a damping hole of a main valve element of the valve body assembly through an electromagnetically-driven conical rod. The damping force can be stably established, the concept is novel, the design is ingenious, the stable damping force can be rapidly provided, and the effect is remarkable.

The invention discloses a double-sided composite ultrahigh-viscosity self-adhesive film, a production process and equipment, the self-adhesive film comprises a base material layer and an adhesive layer, and the base material layer comprises a surface layer, a middle layer and a bottom layer; the formula of the surface layer comprises 90% of LDPE (Low-Density Polyethylene) and 10% of Exfin; the Exfin is a three-well chemical'silicon-like polyolefin copolymerization master batch '; the formula of the middle layer comprises 70% of LLDPE, 20% of LDPE and 10% of rim charge; and the formula of the bottom layer comprises 95% of LDPE and 5% of SEBS. And the formula of the adhesive layer comprises the following components: 30 parts of SEBS, 40-60 parts of tackifying resin, 10-20 parts of white oil, 1 part of fumed silica and 0.5 part of antioxidant 1010. According to the production process, casting co-extrusion is combined with a coating system, multi-layer materials with great difference can be stably subjected to interlayer melting convergence to form the ultrahigh-viscosity protective film at a time, and the production efficiency is greatly improved.

The invention relates to the technical field of three-dimensional scene display, in particular to a digital twinning method based on real-time rendering, which comprises the following steps: a control center builds a target scene and synchronizes the target scene to rendering equipment according to a model file and a target scene building demand; when the control center receives a rendering request, any rendering device is scheduled to be connected with the user side; the rendering device obtains a to-be-rendered picture according to the received picture request, obtains a 2D image corresponding to the to-be-rendered picture based on the model elements of the 3D model, and sends the 2D image to the user side; when the rendering equipment provides service for the user side, the control center detects the user picture frame rate of the rendering equipment in real time and judges whether the equipment state of the rendering equipment is healthy or not; and when the user is not healthy, the control center switches another rendering device to be connected with the user side. The method has the beneficial effects that coordinate conversion can be automatically processed based on the model file, and stable output of pictures in a real-time rendering process is ensured while a target scene is established.

The invention discloses an additive manufacturing deposition layer morphology measuring device and method based on intelligent image reconstruction. The method comprises the steps that a molten pool area image and vibration data are collected; the collected molten pool area image and vibration data are input into a depth self-encoder to be processed, and a reconstructed image is generated through the depth self-encoder; the quality and the stability of the reconstructed image are evaluated by using the PSNR and the SSIM; if the image quality does not reach the preset standard, the system calculates an optimal illumination angle and a camera position required for improving the image quality; the angles and the positions of the LED light and the camera are adjusted through the hollow shaft motor, it is ensured that a light path evenly covers the surface of the molten pool, and all possible illumination dark areas are captured; and if the image quality reaches a preset standard, outputting a reconstructed image. By combining the improved monitoring equipment and the deep learning technology, the challenge faced by the deposition layer morphology test in the laser additive manufacturing process is effectively solved, and the test quality and reliability are improved.

The invention discloses an arylamine compound, a composition containing the arylamine compound and an organic light-emitting device. The structure of the arylamine compound is as shown in the following formula (1): # imgabs0 # formula (1). Wherein ring A is selected from substituted or unsubstituted phenanthrene ring; b is selected from structural substituents as shown in the following formula (2); # imgabs 1 # formula (2). And ring C is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring and a substituted or unsubstituted phenanthrene ring. The arylamine compound provided by the invention has a series of excellent physical and chemical characteristics, and has a good application prospect in the photoelectric field. Specifically, the arylamine compound has excellent photoelectric stability, can effectively resist performance degradation caused by illumination and current change, and ensures stable output of the device in long-time operation. The light-emitting diode has the advantages of low sublimation temperature, low driving voltage, high light-emitting efficiency and long device service life.

The invention relates to the technical field of mechanical arm control, and discloses a mechanical arm continuous control method based on bioelectricity signal recognition, and the method comprises the steps: collecting electromyographic signals of an arm muscle group, and carrying out filtering and denoising processing on the electromyographic signals; and the filtered and denoised electromyographic signals are converted into mechanical arm control parameters through the correlation mapping relation model, interpolation optimization based on control continuity is conducted on the mechanical arm control parameters, the mechanical arm control parameters are converted into joint torque parameters and tail end torque parameters, and mechanical arm control is conducted. According to the method, feature extraction is conducted on the filtered and denoised electromyographic signals through a correlation mapping relation model, time domain features and frequency domain features are extracted respectively, features representing electromyographic signal modes and features representing signal amplitudes are mapped into mechanical arm control parameters, and the mechanical arm control parameters are calculated based on an error value sequence after interpolation optimization. And nonlinear optimization is carried out on mechanical arm control parameters, a more continuous and smooth optimization result is obtained, and mechanical arm continuous control based on bioelectricity signal recognition is achieved.

The invention discloses a temperature measuring device for tire vulcanization and a tire mold, and belongs to the technical field of tire vulcanization equipment.The temperature measuring device comprises an upper side plate, a lower side plate and a temperature measuring device, a first through hole is formed in the upper cover; the first temperature transmission assembly is arranged in the first through hole and comprises a first connecting part and a plurality of first transmission belts; the first connecting part is positioned on the upper surface of the upper cover; a second through hole is formed in the upper hot plate; the second temperature transmission assembly is arranged in the second through hole and comprises a second connecting part and a plurality of second transmission belts, and when the upper hot plate is pressed on the upper cover, the first transmission belts are connected with the second transmission belts; the first connecting part protrudes out of the upper surface of the upper cover and / or the second connecting part protrudes out of the lower surface of the upper hot plate, a pressing part is arranged on the first temperature transmission assembly and / or the second temperature transmission assembly, and the pressing part comprises an elastic piece; the first temperature transmission assembly and the second temperature transmission assembly can be accurately connected in a butt joint mode through the first connecting part and the second connecting part, and it is guaranteed that output temperature information is accurate.

The invention discloses a self-adaptive learning method of PFC circuit control duty ratio feedforward under different load conditions, which comprises the following steps of: under different load conditions, firstly calculating input voltage and output voltage in the duty ratio feedforward, and then forming a self-adaptive learning table; and finally, the power supply system directly calls data in the adaptive learning table under different load conditions, so that the time for real-time sampling and then operation is saved, the control speed of a power supply output voltage loop is greatly improved, the output voltage is more stable, the stable output of the output power supply can be maintained, and the power supply reliability is improved. Stable and reliable power supply is provided for semiconductor equipment, and stability and reliability of a semiconductor supply chain are guaranteed.

The invention discloses a parallel inverter system hybrid synchronous control method and a related device, and the method comprises the steps: calculating the reactive output power and the active output power of an inverter according to the output voltage and the output current of the inverter, and then calculating a current reference value of voltage loop PI control and a current reference value of current loop PI control; and finally, the PWM module generates a modulation signal to control the operation of the inverter. The hybrid synchronous control method for the parallel inverter system provided by the invention breaks through the bottleneck that the existing hybrid synchronous control method is only suitable for a grid-connected inverter system, has higher stability margin on a wide-range short-circuit ratio system, and can achieve positive response to system frequency and voltage support requirements at the same time; a new way is provided for friendly grid connection and efficient consumption of new energy, and the technical problems that an existing hybrid synchronous control strategy is only suitable for a grid-connected inverter system under the rated frequency, and the application scene is limited are solved.

The invention relates to the technical field of compressed carbon dioxide energy storage, and provides a double-liquid-state storage compressed carbon dioxide energy storage system, which comprises a heat pump loop, a first multi-stream heat regenerator, a compressor, a cooler and a first turbine, a second multi-stream heat regenerator, a second multi-stream heat regenerator, a second multi-stream heat regenerator, a second multi-stream heat regenerator, a second multi-stream heat regenerator, a second multi-stream heat regenerator and a second turbine, and the power generation loop comprises a high-pressure CO2 liquid storage tank, a high-pressure working medium pump, a second multi-stream heat regenerator, a heater, a second turbine, a precooler and a condenser. CO2 flows in the heat pump loop and the power generation loop to serve as a working medium, and low-pressure CO2 liquid and high-pressure CO2 liquid are stored in the low-pressure CO2 liquid storage tank and the high-pressure CO2 liquid storage tank and used for the heat pump loop and the power generation loop respectively. By using the CO2 liquid, the pressure in the tank can be maintained during release, the output flow is ensured, and the output of the system is stable. And meanwhile, CO2 liquid can be output through the high-pressure working medium pump, pressure loss caused by throttling is avoided, and the energy storage efficiency is improved. And through liquid storage tank storage, the storage tank volume can be reduced, and the energy storage cost is reduced.

The invention discloses a feed powder storage device, and belongs to the technical field of feed storage, the feed powder storage device comprises a base and a storage mechanism, the storage mechanism comprises a rotating frame, a sliding groove, a stirring assembly, a cleaning assembly, a drying assembly and a discharging assembly; a rotating frame is arranged in the middle of the inner side of the storage tank, the stirring assembly can drive the rotating frame to rotate on the inner side of the storage tank, powder on the inner side of the storage tank is stirred and prevented from caking, and in the working process of the stirring assembly, the powder on the inner side of the storage tank can be dried and dehumidified through the drying assembly. A cleaning assembly is further installed on the rotating frame, the inner wall of the storage tank can be cleaned in the rotating process of the rotating frame, the powder is prevented from being attached to the inner wall of the storage tank, the height can be adjusted, comprehensive cleaning operation on the inner wall of the storage tank is achieved, the caked powder can be smashed through a discharging assembly, and the powder can be discharged through a discharging assembly. And stable discharging is achieved, and the discharging effect is effectively improved.

The invention discloses a low-switching-loss unipolar control method for an isolated bidirectional converter. The converter is composed of a direct-current source 1, a primary side full-bridge circuit, a transformer, a series resonance circuit, a secondary side full-bridge circuit and a direct-current source 2. According to the control method, the converter can always work at the resonant frequency point of the series resonant circuit, and bidirectional energy regulation and control can be realized only by adjusting the duty ratio of the switching tubes of the primary side full-bridge circuit and the secondary side full-bridge circuit; in addition, the input and output voltage relation of the resonant converter can be independent of the size and direction of the transmitted power, the bidirectional power rapid regulation and control capability is achieved, the large turn-off current brought by PWM modulation can be effectively reduced by adopting the control method, the average switching frequency in one switching period is reduced, the switching loss is further greatly reduced, and the switching efficiency is improved. The power transmission efficiency is improved, and the device is especially suitable for the technical field of high-performance bidirectional electric energy conversion of energy storage, electric automobiles, new energy and the like.

The invention discloses an image acquisition method and system for a dual-wavelength circular polarization camera, and the method comprises the steps: setting two independent nanosecond pulse laser sources, and respectively transmitting lasers with different wavelengths; respectively carrying out left-hand circular polarization and right-hand circular polarization treatment on the two lasers; integrating the two nanosecond pulse laser beams subjected to circular polarization treatment into one beam, wherein the two beams are completely overlapped and are coaxial; the integrated nanosecond pulse laser beams are irradiated to a target object, and reflected light is collected through a double-spectrum camera to form two images with different wavelengths; and distributing weights for the image according to the importance of the polarization information, and generating a comprehensive image by adopting an image fusion technology. According to the image acquisition method and system of the dual-wavelength circular polarization camera, two independent nanosecond pulse laser sources are arranged to emit short-wavelength laser and long-wavelength laser respectively, the two beams of laser are subjected to left-handed and right-handed circular polarization processing and then integrated into one beam, and efficient imaging in a complex environment is achieved.

The invention provides an ultrahigh pressure gas well ground throttling depressurization pilot production system, which belongs to the technical field of gas well pilot production, and comprises a gas production tree, a pressure test kill manifold sledge, a cyclone desander sledge, a first-stage oil nozzle manifold sledge, a second-stage electric cage throttling valve, a third-stage electric cage throttling valve, an instrument flange, an isolation flat valve and a wellhead pressure release blowout system, the pressure test well killing manifold sledge achieves pressure test of all high-pressure equipment and has the well killing function in the well emergency situation, the cyclone desander sledge can protect all levels of throttling valves and downstream production equipment against erosion, and the service cycle of the throttling valves and the downstream production equipment is prolonged. The fixed oil nozzle and the electric cage type throttle valve are connected in parallel through the first-stage oil nozzle manifold sledge, a production system can be accurately established, and the first-stage electric cage type throttle valve can be replaced and maintained without closing a well.

The invention belongs to the technical field of biology, and relates to a barley germination period salt-tolerant gene HvHCT1, a protein and an application of the protein in salt damage stress resistance, and the protein comprises an amino acid sequence shown as SEQ ID NO: 2. According to the method, genetic loci related to the salt tolerance of the barley in the germination period are mined through a whole genome association analysis method, then transcriptome sequencing is used for revealing barley salt tolerance differential gene expression changes after salt damage stress, and in combination with association analysis and transcriptome sequencing data, salt tolerance candidate genes in the germination period of the barley are determined. The transgenic arabidopsis thaliana is used for verification; the research provides an excellent germplasm material and a new salt-tolerant gene for barley salt-tolerant breeding research, and also provides a theoretical basis for barley salt-tolerant molecular marker-assisted breeding in the future.

The invention provides a laser stripe center extraction method based on gray coefficient binarization, and aims to solve the problems of non-uniform brightness distribution of laser stripes, difficulty in extraction of weak stripes, breakage of center lines and the like. The method comprises the following steps: enhancing an image; realizing self-adaptive threshold segmentation through a local gray scale statistical model and a peak variable coefficient by using a gray scale coefficient binarization method; extracting a sub-pixel-level center point by combining a secondary positioning method of skeleton constraint; and carrying out fitting smoothing by adopting bicubic interpolation and a smooth spline method. According to the method, the problem of extraction of strong and weak stripes under complex working conditions is effectively solved, and the precision, connectivity and robustness of stripe center positioning are remarkably improved while background noise is suppressed.

The invention relates to the field of automobile part machining, and discloses a die-casting device for automobile part machining, which comprises a machining table, an efficient continuous die-casting mechanism, a synchronous demolding mechanism and a quantitative feeding mechanism, side plates are symmetrically and fixedly arranged on the two sides of the top of the machining table, the side plates are perpendicular to the top face of the machining table, a top plate is fixedly arranged on the tops of the side plates, and a mounting groove is formed in the center of the top face of the machining table. According to the die-casting device for automobile part machining, by arranging the synchronous demolding mechanism, when the vertical rod moves downwards, the transverse rod can be driven to move downwards till the other end of the transverse rod extrudes a spraying trigger at the top of a sprayer, so that the sprayer is started, and demolding liquid is sprayed out along a spraying head at the bottom of the sprayer; and a layer of demolding liquid can be uniformly sprayed into the die-casting groove before die-casting, so that the surface of a workpiece is prevented from being damaged during demolding.

The invention discloses a reclaimed water conveying method and system integrating energy recovery and electric energy storage, and relates to the technical field of reclaimed water conveying. The method comprises the following specific steps: purifying original wastewater through pretreatment and advanced treatment to obtain reclaimed water; conveying the reclaimed water through an urban reclaimed water pipe network; a hydroelectric generation device is arranged in an urban reclaimed water supply system, gravitational potential energy of water flow in the reclaimed water conveying process is converted into electric energy, and energy recovery is carried out; and the recycled electric energy is stored in the energy storage equipment and is used for the operation of a subsequent reclaimed water conveying system. Energy recovery and electric energy storage are achieved in the reclaimed water conveying process, the energy utilization efficiency is improved, dependence on external energy is reduced by recovering energy in the reclaimed water flowing process, and the conveying cost is reduced.

The utility model discloses an accurate fry feeding control device, and relates to the technical field of aquaculture. In order to mainly solve the problem of feed waste caused by the fact that an existing accurate fry feeding control device cannot be adjusted according to actual needs, the following technical scheme is provided: the accurate fry feeding control device comprises a floating frame used for defining a feeding area and a feeding assembly used for feeding feed to the feeding area; the floating frame comprises a floating frame main body, a blocking net covering the floating frame main body, a floating piece nested in the blocking net and lantern rings arranged at corners of the blocking net; the feeding assembly comprises a discharging port, a material conveying piece and a material bin, the discharging port is located in the feeding area, the material bin is arranged outside the floating frame body, one end of the material conveying piece is communicated with the discharging port, and the other end of the material conveying piece is communicated with the material bin. The automatic feeding device has the advantages that the blocking net can be partially arranged above and below the water surface, feed is prevented from floating out of a feeding area, feeding can be conducted at regular time or according to needs through the feeding assembly, waste of the feed is reduced, and feeding flexibility is improved.