459results about How to "Improve system efficiency" patented technology

The invention discloses an industrial equipment real-time monitoring system based on edge computing, and the system comprises the following steps: collecting, processing and analyzing the operation data of industrial equipment through distributed edge computing nodes, constructing a node cooperation mechanism, and completing the processing of the data; the dynamic data scheduling module is used for dynamically optimizing a data transmission path and task allocation according to node performance; the intelligent model dynamic migration module is used for adjusting lightweight model deployment in combination with node resource conditions; the multi-modal fault sensing module is used for extracting and analyzing multi-modal features by using a cross-node collaborative algorithm; the edge node self-adaptive management module is used for adjusting node operation parameters in real time and repairing an abnormal state; and the equipment relevance reasoning module is used for constructing an equipment relevance model through a graph calculation method and generating a real-time relevance graph. According to the method, efficient monitoring and anomaly detection of industrial equipment are realized through resource optimization and intelligent analysis of collaborative edge computing nodes.

The invention discloses an optimization method for a new energy ship energy management system, and the method comprises the steps: S1, obtaining a priority assumption condition related to the energy use of a new energy ship according to a pre-created new energy ship system; s2, constructing a ship energy management mathematical model about a new energy ship system based on priority hypothesis conditions; s3, according to the constructed ship energy management mathematical model, obtaining an objective function model and optimization constraint conditions of ship energy for quantitatively evaluating advantages and disadvantages of different energy use schemes; s4, ship operation energy consumption and historical navigation data are collected and obtained; s5, according to the historical data, obtaining a neural network prediction model for pre-estimating the photovoltaic generating capacity and the ship navigation power demand based on weather prediction data; and S6, according to the neural network prediction model, obtaining estimated data of the photovoltaic power generation amount and the ship navigation power demand, and based on the target function model of the ship energy and the optimization constraint condition, obtaining an optimal energy use scheme of a corresponding new energy ship energy management system according to an optimization algorithm. The problems that an existing ship energy management system and a calculation method thereof have remarkable defects in the aspects of energy efficiency optimization, multi-energy coordination, dynamic response, operation simplicity and convenience, intelligent management, safety, new energy compatibility, comprehensive optimization strategies and data processing capacity, and complex requirements and environmental protection requirements of modern shipping are difficult to meet are solved.

The invention relates to the technical field of communication, and discloses a communication data transmission and temporary storage method and device and a storage medium, and the method comprises the following steps: S1, receiving and partitioning initial data, and storing the initial data in a cache region; s2, calculating weighting coefficients of the data blocks and performing priority ranking; s3, encrypting the data blocks according to the sequence; s4, transmitting the encrypted data to a target end through a security protocol; s5, the target end decrypts the data and verifies the integrity; s6, temporarily storing the verified data blocks in a temporary storage area until all the data blocks are transmitted; and S7, after the transmission is completed, recombining and storing the data block in the target equipment. According to the method, the data is subjected to blocking, priority ranking, encryption transmission and decryption recombination, so that the security, integrity and transmission efficiency of the data in the network transmission process are ensured, and the method is suitable for a communication system needing high security and high data integrity.

The invention discloses a cache processing method of heterogeneous equipment, a heterogeneous system, a product, a device and a medium, and relates to the technical field of data storage. And according to the target virtual address access times corresponding to each device in the heterogeneous system, realizing a global data caching mechanism. And determining a file page corresponding to the target heterogeneous device based on the target virtual address access frequency, so that the file system layer has the capability of managing the memory cache of the heterogeneous device. And the predicted file page of the target heterogeneous device is verified, and the file page is moved under the condition that the verification is passed, so that the distribution accuracy of the target heterogeneous device is improved. The file page of the target heterogeneous device is mapped and moved to the memory of the host side, the target heterogeneous device does not need to be accessed, the file page stored in the memory of the processor is directly accessed, the increased access rate of the processor accessing the target heterogeneous device is avoided, the delay of accessing the memory of the target heterogeneous device is reduced, and the access efficiency is improved. And the data transmission rate and the system efficiency of the heterogeneous system are improved.

The invention relates to the technical field of battery SOC equalization, and particularly discloses an energy storage system battery SOC equalization method based on an EMS, and the method comprises the steps: determining SOC equalization influence factors of each battery based on the EMS, analyzing the SOC real-time use state of each battery, obtaining the SOC equalization state characteristic value of each battery in combination with the SOC equalization influence factors of each battery, and determining the SOC equalization state judgment value of each battery. According to the method, whether the battery needs to be subjected to SOC equalization or not is judged, an SOC equalization mode is determined, the temperature state of the battery SOC equalization process is monitored, whether the battery SOC equalization process is overheated or not is judged, and the problems that a traditional equalization method is low in response speed when coping with a scene with frequent load change and high-power requirements, a fixed SOC equalization threshold value is set, and the battery SOC equalization process is overheated or not are solved. The method solves the problem that the prior art is poor in adaptability to dynamic working conditions such as load fluctuation, unnecessary energy consumption is avoided, the system safety can be improved, and the probability of sudden failures is reduced.

The invention relates to the technical field of multi-energy complementary power generation, and discloses an industrial steam supply peak shaving system and method coupling fused salt heat storage and solar energy, and the industrial steam supply peak shaving system comprises a coal-fired power generation system and an industrial steam supply system; in the heat storage mode, the boiler, the steam cooler and the condenser are sequentially connected; in the heat release mode, the high-pressure heater, the primary feed water heater and the low-pressure cylinder are sequentially connected through pipelines; and the feed pump, the secondary feed water heater and the boiler are connected in sequence. In the low ebb of the electrical load, solar energy is used for heating fused salt to store heat, and part of high-temperature steam is extracted from steam-water circulation of the improved coal-fired power generation system to store the heat in a heat storage device and does not enter a steam turbine for power generation; the power load output is adjusted by adjusting the thermal load output of the thermodynamic system in the power generation process, and load decoupling of the boiler and the steam turbine is achieved. And in the electrical load peak, the stored heat energy is released back to steam-water circulation, and the electrical load of the coal-fired power generation system is increased.

The invention discloses a node mode selection and beam forming method in a cooperative communication integrated scene, and belongs to the field of wireless communication. The invention provides a system node mode selection and beamforming scheme capable of obtaining optimal balance between communication and sensing performance, which comprises the following steps of: in the first stage, firstly establishing a channel model and a data transmission model of a system, and deducing an uplink and downlink communication signal to interference plus noise ratio expression and a sensing signal to interference plus noise ratio expression; in the second stage, an expression of maximum ratio transmission (MRT) beam forming, an expression of zero forcing (ZF) beam forming and an expression of conjugate sensing beam forming are derived; in the third stage, a node mode selection and beam forming algorithm based on a multi-agent layered reinforcement learning algorithm is designed; and in the fourth stage, an algorithm is called to perform duplex mode selection and beam vector design on each access node. According to the method, the system efficiency can be improved, and the actual deployment of the cellular-free cooperative communication integrated system is promoted, so that the method has a certain actual value.

The invention relates to a non-attribution mirror image volume data synchronization method and device, computer equipment and a storage medium. The method comprises the steps that fault information is obtained in response to the fact that an affiliated main node conducts data read-write processing on a mirror image volume and breaks down, the fault information comprises incomplete operation and a non-affiliated node list, and the non-affiliated node list comprises a plurality of non-affiliated nodes; according to the fault information, integrating the incomplete operations to obtain a global incomplete operation list; based on the global incomplete operation record table, the multiple non-attribution nodes take over the incomplete operation; in response to the fact that all the inexhaustible operations are completed, performing home domain redivision on the non-home node to obtain a new master node; and completing data synchronization and state updating of the non-attribution mirror image volume through the new main node. And completing data synchronization and state updating of the mirror image volume through the new main node. By adopting the method, the data synchronization efficiency can be improved and the data consistency can be ensured.

The invention discloses a constant-pressure type compressed air energy storage system and method combined with pumping and storage, and belongs to the technical field of electric energy physical energy storage systems, and the constant-pressure type energy storage system comprises a pumped storage subsystem, a turbine expansion power generation subsystem, a compressed air energy storage subsystem and a water-gas common-capacity cabin constant-pressure subsystem. By flexibly controlling the operation modes of the subsystems and the on-off states of valves among the subsystems, the system can achieve independent energy storage and power generation operation among the pumped storage subsystem, the air compression subsystem and the turbine expansion subsystem. The design not only improves the flexibility and reliability of the system, but also enables the system to carry out optimal configuration and operation according to actual demands, thereby further improving the energy storage efficiency and economic benefits.

The invention discloses a seat temperature adjusting method, device and equipment and a storage medium, and relates to the technical field of automobile engineering.The seat temperature adjusting method comprises the steps that the temperature outside an automobile, the seat temperature and the running state of a vehicle-mounted refrigerator and the running state of a vehicle-mounted air conditioner are obtained; according to the temperature outside the automobile, the seat temperature, a first preset temperature and a second preset temperature, the adjusting requirement is obtained, and the first preset temperature is smaller than the second preset temperature; and the seat loop valve, the air duct fan and the seat fan are controlled according to the operation state and the adjustment requirement, and seat temperature adjustment is completed. According to the method, passengers can always keep comfortable under different weather conditions, the perception comfort of a human body to the vehicle seat is improved, meanwhile, unnecessary energy consumption is reduced, the system efficiency is improved, the service life of equipment is prolonged, the intelligent level of the vehicle is remarkably improved, and better riding experience is provided for the passengers.

The invention relates to the technical field of energy storage, in particular to a constant-pressure compressed gas energy storage system and a using method. A constant-pressure compressed gas energy storage system comprises a constant-pressure gas storage tank suitable for constant-pressure storage of compressed gas; the expansion exhaust assembly comprises an air outlet pipeline and a first expansion machine, the air outlet pipeline communicates with the constant-pressure air storage tank, the first expansion machine is arranged on the air outlet pipeline, and the first expansion machine is suitable for being connected with a generator set; the heat storage assembly comprises a circulating heat storage pipeline and a heat storage device, the circulating heat storage pipeline is provided with a liquid outlet branch, the liquid outlet pipeline is communicated with the constant-pressure gas storage tank, heat storage fluid flows in the circulating heat storage pipeline, and the heat storage fluid is contained in the constant-pressure gas storage tank. The problems that in the energy releasing process of a constant-volume compressed gas energy storage system, compressed gas continuously flows out of a gas storage device, the pressure in the gas storage device can be gradually reduced, after the pressure of the compressed gas is reduced, the compressed gas reaches the interior of an expansion machine, then full-power power generation cannot be achieved, and then the output total work of the power generation system is limited are solved.

The invention discloses a load self-adaptive cooperative control method and system for electric drive double pumps. The method comprises the steps that the target flow of a first pump and the target flow of a second pump in the double pumps are obtained; dividing a plurality of rotating speed working points; calculating a steady-state torque corresponding to the rotating speed working point; calculating a motor target torque corresponding to the rotating speed working point; calculating a comprehensive efficiency value; the comprehensive efficiency values are sequentially sorted from high to low, optimal solution screening is sequentially carried out from the motor target torque corresponding to the highest comprehensive efficiency value, the first pump displacement value and the second pump displacement value, and when a preset stepping value range is met, optimal solution screening is carried out; and outputting the motor target torque of the comprehensive efficiency value, the first pump displacement value and the second pump displacement value as final execution target values. The method has the advantages that optimal solution screening is carried out through the comprehensive efficiency value and the stepping value judgment condition, and high system efficiency is obtained on the basis that the system flow requirement is met; the method can reduce the sudden change of the rotating speed of the motor caused by the load change, and improves the responsiveness and stability of the rotating speed.

The utility model relates to the technical field of heat exchangers, and discloses a slotted water-drop-shaped fin microchannel heat sink which comprises a heat sink upper cover plate and a heat sink lower cavity, the heat sink upper cover plate and the heat sink lower cavity are connected in a sealed mode to form a heat exchange cavity, the heat sink upper cover plate is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the heat exchange cavity. The liquid inlet and the liquid outlet are communicated with the heat exchange cavity, a micro-channel unit is arranged in the heat exchange cavity, the micro-channel unit comprises a plurality of fins which are distributed in an array mode, and each fin is in a water drop shape and comprises an arc end and a sharp corner end opposite to the arc end; a first through groove and a second through groove are formed in the arc end in the direction facing the sharp corner end in a spaced mode, and the arc end is a fluid input end. The utility model has the following technical effects: 1, the heat transfer surface area is increased, and the heat exchange efficiency is improved; resistance is reduced, and system efficiency is improved; accumulation of dirt and sediments is reduced, and the maintenance cost is reduced.

The invention relates to the technical field of liquid air energy storage, and discloses a liquid air energy storage coupling system. The liquid air energy storage coupling system comprises a liquid air energy storage subsystem and a biomass gasification subsystem. The liquid air energy storage subsystem comprises a compressor unit, a heat storage unit, a cold storage unit and a turbine unit. And the biomass gasification subsystem comprises a biomass gasification furnace. And an air inlet of the heat storage unit is communicated with an air outlet of the air compressor unit. And the cold storage unit communicates with the heat storage unit. An air outlet of the heat storage unit communicates with an air inlet of the turbine unit and is used for conveying high-temperature air to the turbine unit, the high-temperature air enters the turbine unit to drive the power generator to generate power, and an air outlet of the turbine unit is used for discharging cooled air. And a gasifying agent inlet of the biomass gasifier is communicated with an air outlet of the turbine unit. Resource utilization of clean air at the outlet of the liquid air energy storage system can be achieved, and the system efficiency of the liquid air energy storage system is improved.

The invention discloses a memory chip access control method and device, a storage medium and electronic equipment. Comprising the steps that first delay time for responding to an activation command when a memory chip conducts data access is obtained, and the first delay time is used for representing the time interval between sending of the activation command to the memory chip and responding of the activation command by the memory chip; second delay time for responding to a target command except the activation command when the memory chip performs data access is obtained, and the second delay time is used for representing a time interval between sending of the target command to the memory chip and response of the memory chip to the target command; a first target timing parameter of the memory chip is adjusted based on the first delay time and the second delay time, and the first target timing parameter is used for determining the target time for accessing the memory chip. The technical problem that the data read-write efficiency of an operating system is low due to the fact that the time of the activation command is not adjusted when the line address is checked through the activation command in the prior art is solved.

The invention relates to the field of satellite navigation, and discloses a low earth orbit satellite signal capturing and tracking method and a signal processing method, comprising the following steps: periodically receiving a low earth orbit satellite signal of at least one time slice, and carrying out carrier separation on the low earth orbit satellite signal to obtain a stripped signal corresponding to the low earth orbit satellite signal; processing the stripped signal and a locally stored pseudo-random code sequence so as to find an amplitude maximum value of the stripped signal in a frequency domain, and calculating Doppler frequency after determining that the stripped signal is successfully captured according to the amplitude maximum value; and transferring the successfully captured stripped signal to a tracking channel, tracking the stripped signal regularly, and returning to the previous step. According to the invention, signals with relatively large Doppler frequency offset can be efficiently captured in real time for low-orbit signals, the number of navigation satellites which can be captured by the system at the same time can be greatly increased, and the system efficiency and the system coverage rate are improved.

The invention discloses a control method of a two-stage bidirectional AC-DC converter, and relates to the technical field of two-stage bidirectional AC-DC converters, and the two-stage bidirectional AC-DC converter comprises a front-stage interleaved bridgeless PFC circuit which is used for converting an AC input voltage into a DC voltage; the back-stage bidirectional full-bridge CLLLC resonant circuit can realize zero-voltage soft switching-on and zero-current soft switching-off of a switching tube, an AC-DC part of the two-stage bidirectional AC-DC converter is an interleaved bridgeless PFC circuit, two paths of input inductive current are interleaved, so that input current ripples are greatly reduced, a power factor correction function is realized, a DC-DC part is a bidirectional full-bridge CLLLC resonant circuit, and the two paths of input inductive current are interleaved, so that the two paths of input inductive current are interleaved. The wide-range voltage regulation function can be achieved under phase shift-frequency conversion control, the two-stage bidirectional AC-DC converter can achieve bidirectional energy flow, and meanwhile the converter is provided with a high-frequency transformer so that electrical isolation can be achieved.

The invention provides an ammonia fuel cracking supply system of a gas turbine. The system comprises a liquid ammonia storage tank, a liquid ammonia supply pump, an air vaporizer, a heat exchanger, a first ammonia cracker, a compression and expansion all-in-one machine, the gas turbine and the like. Wherein liquid ammonia is supplied to the air vaporizer through the liquid ammonia supply pump; one end of the heat exchanger is communicated with the air vaporizer, and the other end is communicated with the first ammonia cracker; one end of a compression-expansion all-in-one machine introduced by the system is communicated with the heat exchanger, and the other end is communicated with the gas turbine. The air vaporizer adopts an exhaust heat source to gasify liquid ammonia into ammonia gas. Ammonia gas discharged from the air vaporizer enters the heat exchanger, exchanges heat with cracked gas after cracking to be heated, and then is guided into the first ammonia cracker. Ammonia gas is decomposed into mixed gas of hydrogen and nitrogen in the first ammonia cracker, the mixed gas can enter the heat exchanger, and the mixed gas enters the compression and expansion all-in-one machine after being subjected to heat exchange and cooling in the heat exchanger, and is conveyed to the gas turbine after being pressurized and cooled.

The invention provides a centralized lubrication electric drive axle which comprises an axle housing, and driving parts are fixedly arranged at the two ends of the axle housing. The cooling and lubricating system is used for cooling and circulating lubricating oil; an oil bottom box is fixedly arranged on the axle housing, an oil suction port is formed in the bottom of the oil bottom box and communicated with an inlet of a cooling and lubricating system through a pipeline, and an outlet of the cooling and lubricating system is communicated with oil inlets of driving components on the left side and the right side through oil inlet pipes respectively. An oil return pipe for communicating the oil outlet of the driving part on each side with the oil bottom box is arranged in the oil bottom box; when the axle housing inclines, the oil return ports of the two oil return pipes are located above the oil surface of the oil bottom box all the time, and the oil suction port is located below the oil surface all the time.

The present invention discloses an integrated device of a motor and a planetary reducer and a manufacturing method thereof, and the technical scheme thereof includes: a casing, a motor assembly and a planetary reducer assembly, the casing is provided with mounting cavities for the motor assembly and the planetary reducer assembly respectively, the motor assembly and the planetary reducer assembly are matched in transmission, and a cooling structure is provided on the outer circle of the casing. The manufacturing method mainly processes the casing, the stator core is installed on the casing, the rear end cover of the motor is fixed on the casing, the rotor of the motor is first installed on the front end cover inside the motor, and then pressed into the stator, the sun gear of the planetary reducer is installed on the motor shaft, and the gear lubricating oil is added through the planetary gear oil filling port on the casing, and the coolant needs to be introduced into the casing during operation. The entire technical scheme has a compact structure, simple transmission, and convenient maintenance, and the system efficiency, rotation accuracy, position accuracy and service life are greatly improved, and the heat generation and operating noise are greatly reduced.

The invention relates to the technical field of off-grid photovoltaic disturbance rejection, in particular to a method for enhancing off-grid photovoltaic disturbance rejection capability based on an intelligent filtering technology. Firstly, known disturbances such as illumination, temperature and load abrupt change in the system are analyzed, and a model is established. Designing an intelligent filter, monitoring and estimating unknown disturbance by using a self-adaptive algorithm, obtaining direct current and harmonic disturbance observation values, and fusing the direct current and harmonic disturbance observation values; and then an active disturbance rejection controller based on intelligent filtering is constructed, unknown disturbance and known disturbance are added to obtain a concentrated disturbance observation value, and parameters are designed to respond to suppression disturbance. And finally, obtaining a voltage preliminary control instruction, and combining with a filter observation value construction instruction to suppress current harmonic disturbance. Through the steps, the stability and reliability of the off-grid photovoltaic system are improved.

The invention discloses an electric power ciphertext data anomaly detection method and system based on function encryption, and the method comprises the steps: obtaining a plurality of overlapped normal electric power time sequence data subsequences through sliding a time step on each piece of electric power time sequence data according to a sliding window of a preset size; constructing a corresponding abnormal power time sequence data sub-sequence according to the at least one normal power time sequence data sub-sequence; performing data encryption on the normal power time sequence data sub-sequence and the abnormal power time sequence data sub-sequence according to a preset function encryption mechanism, inputting the encrypted normal power time sequence data and abnormal power time sequence data into a pre-constructed LSTM-FCN network model, and training to obtain an anomaly detection model; and inputting the encrypted real-time power time sequence data sequence into an anomaly detection model, and outputting a detection result by the anomaly detection model. According to the end-to-end time sequence anomaly detection method, the detection result can be directly output, intermediate steps are reduced, and the detection speed is increased.

The invention belongs to the field of ammonia cracking hydrogen production devices, and particularly relates to an ammonia catalytic cracking hydrogen production device based on engine exhaust waste heat utilization, a control system and a control method.The ammonia catalytic cracking hydrogen production device comprises an ammonia catalytic cracking hydrogen production system, a nitrogen-hydrogen separation system and a working condition control system; the ammonia catalytic cracking hydrogen production system comprises an exhaust pipe, and an ammonia gas cracking pipe and a heat insulation pipe which sequentially wrap the outer wall of the exhaust pipe; the ammonia gas cracking pipe comprises an ammonia gas inlet and a cracking mixed gas outlet, and a gap is reserved between the inner wall of the ammonia gas cracking pipe and the outer wall of the exhaust pipe and used for circulation and cracking of ammonia gas; the nitrogen-hydrogen separation system comprises a hydrogen separation unit, a nitrogen separation unit and an ammonia gas recovery unit; the cracking mixed gas outlet is connected with the hydrogen separation unit; the ammonia gas recovery unit comprises an ammonia water heating bin, and the exhaust pipe penetrates through the ammonia water heating bin. Ammonia gas cracking and nitrogen-hydrogen separation are completed by fully utilizing engine tail gas waste heat, the cost and energy consumption are remarkably reduced, and hydrogen supply for promoting efficient and reliable combustion of the ammonia engine can be obtained.

The invention discloses a switching power supply, and aims to generate a small current to charge an output capacitor by controlling the working state of a bus protection switch in a short circuit detection stage, so as to judge whether a short circuit occurs by detecting whether an output voltage can rise to a preset value or not. According to the short circuit detection method, bus detection resistance and differential sampling are not needed, the design difficulty of chip pins and chips can be reduced, secondly, in the soft start stage, the power-on time is prolonged, the peak value of the charging current of the output capacitor is reduced, the voltage of the output capacitor is made to rise slowly, the rising slope of the output voltage is reduced, and therefore the output voltage is improved. Therefore, the output voltage reaches the level equal to the input voltage, loss in the soft start process is reduced, the system efficiency is improved, and the safety is high.

The power distribution system comprises an upper-layer total power distribution control system EMS, the double-range-extending system and a high-voltage power lithium ion battery, and the double-range-extending system comprises a first range-extending system and a second range-extending system. Two independent range extending control systems are arranged, so that the weight of a whole machine system is reduced, the total efficiency under different power distribution combinations is obtained by obtaining the corresponding relation of the power, the rotating speed, the torque and the efficiency of each range extending system and carrying out gridding processing on the maximum power and the efficiency, and the overall efficiency is improved. The optimal power distribution combination corresponding to the highest efficiency under different power requests is determined to carry out power distribution, the system efficiency can be effectively improved by adopting dynamic power distribution, the operation complexity of a controller is effectively simplified and reduced through the control logic of internal linear table lookup, the operation efficiency and robustness of the system are improved, and the system reliability is improved. Through dynamic real-time performance based on power distribution, system reliability and NVH characteristics can be effectively improved.

The utility model discloses a thermal management module, a thermal management system and a vehicle, the thermal management module comprises a thermal management assembly and a flow channel plate, a thermal management element is arranged on the flow channel plate, and a part of the structure of the flow channel plate becomes one part of a shell of the thermal management element. According to the heat management module provided by the utility model, the partial structure of the runner plate is used as the partial shell structure of the heat management element, namely, the runner plate is used as a part of the heat management element, so that the repeated design of the shell is avoided, the use of shell materials is reduced, and the cost is reduced.

The invention relates to the technical field of community management, and particularly discloses an abnormal condition management method and system applied to a large intelligent old-age care community, and the method comprises the steps: obtaining the significant weak information of a marked old person, and marking the old person as a marked old user; generating potential abnormal scene information according to the significant weak item information; monitoring the scene information of the marked old person, and when the scene information is matched with the potential abnormal scene information, continuously obtaining physiological information based on a wearable intelligent device on the marked old person; judging or predicting whether the elderly user feels uncomfortable according to the physiological information and preset first early warning value information, and generating event processing information if the elderly user feels uncomfortable; according to the method, personalized risk assessment, intelligent scene recognition, real-time physiological monitoring and a quick response mechanism for marking the elderly are performed based on the significant weak item information, so that the management efficiency of the pension community is improved, and a safer and more comfortable living environment is provided for the elderly.

The invention provides a fuel cell commercial vehicle power system and an intelligent power distribution control method thereof. The system comprises a controller, a fuel cell, a power cell, a load motor, an inverter and a DC / DC converter. The controller is connected with the fuel cell and the power cell, and the fuel cell is in line connection with the power cell; the fuel cell is connected with the load motor through the inverter; the power battery is connected with the inverter through the DC / DC converter; and a detection module is arranged in the controller. Through intelligent power distribution and auxiliary power output, the burden of the fuel cell during rapid power change is reduced, frequent power fluctuation of the fuel cell is reduced, and the service life of the fuel cell is prolonged. And the power battery quickly responds to the power change through the DC / DC converter, so that the fuel battery always keeps high-efficiency operation, and the overall system efficiency is improved.

The invention discloses an end-to-end SLAM (Simultaneous Localization and Mapping) method based on a deep cyclic convolutional neural network. According to the method, an image sequence frame is collected in real time through a depth camera, converted into a set image size and then output; creating a convolutional neural network model to receive and process an image sequence frame output by the depth camera, and outputting extracted feature point cloud coordinates and descriptor information and camera pose information for establishing topological information of an image geometric structure; creating a recurrent neural network model to receive and process an image sequence frame output by the depth camera, and outputting a credible semantic region and object-level road sign information of which the credibility is greater than a set first threshold value; according to the method, the three-dimensional map with semantic recognition and perception is constructed based on the deep learning model, and the parameter indexes such as the positioning precision, the map construction precision, the loopback detection precision, the system efficiency and the robustness are remarkably improved.

The invention discloses an intensified heat supply system based on a cascade heat storage device, and belongs to the technical field of domestic heat supply systems, the intensified heat supply system comprises a phase change heat storage device and a water tank which are arranged indoors, and a solar heat collector arranged outdoors, and the solar heat collector is communicated with the two ends of a heat charging pipe of the phase change heat storage device through pipelines respectively; the water tank is respectively communicated with heat release pipes of the phase change heat storage device through pipelines; the heat charging pipe is of an approximate heart-shaped structure; the water tank is communicated with a domestic water inlet and a heat user side outlet, and an auxiliary electric heating device is arranged in the water tank. The enhanced heat supply system based on the cascade heat storage device is simple in structure, high in solar energy utilization rate and capable of guaranteeing efficient hot water supply under different weather conditions.