272results about How to "Low operating efficiency" patented technology

The invention discloses a method for processing a space hand signal gesture command based on a depth camera and relates to the method for processing the space hand signal gesture command based the depth camera. The method for processing the space hand signal gesture command based the depth camera is capable of recognizing space hand signal gesture command information fast and accurately, improving working efficiency and precision greatly and being high in robustness, strong in practical applicability and good in anti-jamming capability when applied to a complex and changeable environment. The method comprises the steps of acquiring a real-time image by the depth camera, obtaining hand signal point cloud data by using three-dimensional point cloud computation and obtaining hand signal point cloud information, achieving a plane registering of the hand signal point cloud information and extracting contour feature point information, resuming a hand signal gesture, recognizing the hand signal gesture, recognizing a corresponding movement track and defining operation content of the movement track and finally achieving data smoothing of a dynamic hand signal gesture mouse output point according to a protocol for table-top tangible user interfaces (TUIO). The method for processing the space hand signal gesture command based the depth camera has the advantages of being fast , comprehensive and accurate in acquiring target information, establishing a space motion detecting area, extracting information with different depth, achieving multi-touch and improving integral operating performance.

The invention discloses a co-hiring scheduling system and scheduling method integrating reservation service and real-time taxi-hiring and relates to a call scheduling system of a taxi and a scheduling method. In order to solve the problem that the existing taxi call is low in operating efficiency, the invention aims to design a comprehensive intelligent system which fully considers call reservation and real-time taxi-hiring in a co-hiring system. The system can plan a plurality of co-hiring orders in advanced according to reservation orders, wherein the orders are grouped according to different paths in light of the optimal passenger pick-up sequence of each co-hiring order, and then, the orders are distributed to corresponding call taxis. In the process of executing the order tasks of the call taxis, instant taxi-hiring orders can be inserted in real time according to special condition so as to fully use the service resources of the call taxis as far as possible while the traveling demand of the passengers is satisfied, thereby realizing the purpose of saving energy, reducing emission, reducing the travelling cost of the passengers and improving the service efficiency and the income of the call taxi drivers. The system and the method disclosed by the invention are suitable for a taxi co-hiring scheduling of reservation service and real-time taxi-hiring.

The invention is suitable for the field of an augmented reality technique and provides a navigation method, a navigation terminal and a navigation system based on the augmented reality technique. The method comprises the following steps: shooting a real image; gathering AR information in an electronic fence; overlaying and displaying the AR information in the real image; when the AR information is manually selected, generating a navigation line between a merchant geographic position in the AR information selected and a current geographic position according to the merchant geographic position in the AR information selected and the current geographic position and displaying a navigation arrow corresponding to the navigation line; when the actual travel line of a user is changed in direction, changing the direction of the navigation arrow in real time; and when the distance between the actual travel line of the user and a target position is changed, generating corresponding distance reminding information and sending information bars in different times and the like from the target position to reversely attract the user to arrive the destination in actual use of the user. According to the invention, the operating efficiency of the user is improved, and moreover, the user and the destination are interacted with each other bidirectionally, so that a bilateral interaction enhanced remarkable high efficiency is achieved.

A method for operating a fuel vapor control system included in a vehicle having an internal combustion engine is provided. The method may include storing positive pressure or negative pressure in an isolated fuel tank, transferring at least a portion of the positive pressure or the negative pressure to an evaporation canister region, and determining degradation of the evaporation canister based on a pressure response of the evaporation canister region while the evaporation canister region is isolated from the fuel tank. In this way, it is possible to utilize pressure that may be passively generated in one portion of the system, even during shut-down engine operation, to verify the integrity of another portion of the system.

An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on / off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on / off device, which has been in the open state, to the closed state.

The invention discloses a winding open-circuit type permanent magnet motor vehicle starting and generating system and a control method. The system comprises a winding open-circuit type permanent magnet motor, a three-phase rectifier bridge, a three-phase bridge converter, a changeover switch, a filter capacitor, a storage battery, a controller, a voltage and current test circuit, a drive circuit and a load. In the method, one side of the winding head of the winding open-circuit type permanent magnet motor forms a rectifying side to supply power to the load through the three-phase rectifier bridge and the filter capacitor, and the other side is connected with the three-phase bridge converter and the storage battery to form an inversion control side. The changeover between the starting operation state and the generating operation state is realized through the changeover switch, starting control adopts single-current closed loop vector control, generating operation adopts rectifying side DC voltage and motor-phase current double closed loop control, and stable output voltage and generator high-efficiency operation control are realized. The winding open-circuit type permanent magnet motor starting and generating system can effectively meet the requirements of wide revolution operating range, high power density and high efficiency of a vehicle starting generator.

The invention relates to a posture correction method based on depth information and skeleton information, and the method comprises the steps: (1), carrying out the effective skeleton point screening based on a user ID and a skeleton space coordinate depth value; (2), carrying out the smoothing of the skeleton information, and carrying out the coordinate standardization of skeleton points in a skeleton space coordinate system; (3), drawing skeleton vectors, and calculating a direction cosine value of each skeleton vector; (4), obtaining a training data set and a testing data set; (5), enabling the data sets to serve as the input of a Bayes regularization BP neural network, and carrying out the recognition of 25 skeleton points and 24 skeleton segments through the Bayes regularization BP neural network; (6), carrying out the analysis and processing of a result. The method irons out the defect that a color camera is liable to be affected by light, can accurately track a human body in a visual field, and also improves the naturalness of man-machine interaction.

The invention provides a CC (challenge collapsar) attack defending method for a reverse proxy server; the method includes: first, receiving an access request to access a target server sent by a client; second, making a statistic of access characteristic data of the client for the target server according to the access request; third, detecting whether the access characteristic data is normal or not by using preset attack detection rules; forth, judging whether the client is a CC attack client or not according to the detection results, and if not, forwarding the access request to the target server. Since the client and the target server are isolated by using the reverse proxy server and the target server is completely concealed out of a range of attack power of the CC attack client, good defense is provided; meanwhile, the method is executed by the reverse proxy server, no system resource of the target server is used, and it possible to ensure that the target server never experiences reduced system resources and reduced operation efficiency due to CC attack defending.

A versatile compact air precleaner for separating heaver-than-air particulate debris from debris laden air has a retroflexed flow path through a separator chamber. A motor of a motor-driven fan is located in the flow path downstream from the separator chamber. A plurality of independently rotatably adjustable housing sections of a housing are formed with respective ones of the air precleaner debris laden air inlet, particulate debris ejector ports, clean air outlet, and mounts for mounting the air precleaner to a support to provide utility with multiple clean air outlet configurations, directions of ejection of particulate debris from the ejector ports, inlet configurations, precleaner sides for mounting, and filter sizes. A separator chamber end section including the ejector ports and the filter are connected forming a removable, disposable air filter cartridge which obviates ejector port clogging with change of filters.

The invention relates to a data security aggregation method with a privacy protection function. The objective of the invention is to protect the privacy and confidentiality of data in an aggregation process. According to the data security aggregation method of the invention, an identity-based negotiation mechanism with authentication keys, a homomorphic encryption mechanism and an aggregation signature mechanism are adopted in a data aggregation process, and therefore, the privacy and the confidentiality in the data aggregation process can be protected, and impact on system operation efficiency can be decreased under the premise that system security can be guaranteed. The identity-based negotiation mechanism with the authentication keys, the homomorphic encryption mechanism and the aggregation signature mechanism are integrated in a sensor node, and the confidentiality, integrity and availability of end-to-end data in a high hybrid scene can be ensured without intra-network data processing efficiency reduced. The data security aggregation method with the privacy protection function of the invention has the advantages of invulnerability, scalability, dynamic property and validity.

The invention provides a safety device for elevator, which is not subject to influence of status of the floor at the doorway when foreign matter is detected, and is capable of surely detect foreign matter even if the foreign matter in the shape of a rope is in contact with the elevator door along the end surface of the elevator door. The safety device for elevator comprises an image recognition unit disposed on the upper portion of the elevator doorway and used for capturing the image of the vicinity of the doorway; a foreign matter detection image processing unit, which determines whether foreign matter exists according to the image information obtained by the image recognition unit; an elevator door control unit, which controls the opening and closing movement of the elevator door; and an elevator door driving unit, which drives the elevator door. In the safety device for the elevator, the moving unit (e. g., elevator door) tries to move the foreign matter, thereby the foreign matter is identified and / or existence of foreign matter is determined, wherein the identification determines that whether the detected foreign matter is real or the detection is false, and the determination of the existence of foreign matter determines whether rope-shaped foreign matter exists along the end surface of the elevator door.

A plasma generator for forming a thin film comprises a cathode (4) for supplying constituent particles of an arc plasma and a trigger-and-anode (6) for starting and sustaining the arc plasma. The cathode surface (4a) of the cathode (4) is flat or finely irregular, and the anode surface (6c) of the trigger-and-anode (6) brought into contact with the cathode surface (4a) is flat. The anode surface (6c) is so arranged as to be brought into contact with the whole cathode surface (4a) when plasma is started. The contact point between a fine projection end (4b) of the cathode surface (4a) and the anode surface (6c) is made a plasma emission point. When the projection is consumed by plasma emission, another projection end which can be brought into contact with the anode surface (6c) is used as another plasma emission point, thus enabling intermittent operation of persistently repeating the sequence operation.

The invention discloses a hierarchical optimization method for assisting the deep peak regulation of a thermal power generating unit by a lithium iron phosphate energy storage system. The method comprises the steps of carrying out economic factor analysis on the lithium iron phosphate energy storage system assisted thermal power generating unit deep peak regulation, establishing a lithium iron phosphate energy storage system assisted thermal power generating unit deep peak regulation hierarchical optimization model, solving the hierarchical optimization model and the like, optimizing the energy storage charging and discharging power at each moment by taking the optimal peak load shifting effect and the optimal operation benefit of the lithium iron phosphate energy storage system as an upper-layer target. The middle-layer model adopts a thermal power generating unit deep peak regulation means. In combination with a unit deep peak regulation energy consumption model and a compensation model, the middle-layer model optimizes the wind power acceptance amount at each moment by taking the minimum total peak regulation cost of the system as a target, and determines the total output of thethermal power generating unit. The lower-layer model optimizes the output of each unit by taking the optimal operation benefit of the thermal power unit as a target. The method has the advantages ofscientificity, reasonability, economy, applicability, low operation cost, good peak shaving effect and the like. Therefore, a power grid system can operate stably.

The invention relates to a maximal frequent sequential pattern mining method based on a distributed log.The method comprises the following steps that: on the basis of a Spark distributed computation framework, extracting a local maximal frequent sequence; utilizing prefix projection to divide search space, and carrying out recursive extraction on the local maximal frequent sequence, wherein a first frequent sequence deletes infrequent items in a log sequence dataset, a database scanning scale is lowered, and meanwhile, a corresponding relationship between the frequent sequential pattern and the maximum frequent sequential pattern is used for reducing a candidate sequence number; extracting a global maximum frequent sequence; storing the local maximal frequent sequence according to different lengths, and carrying out superset detection on the sequential pattern of adjacent lengths to judge whether a superset relationship is in the presence or not; and if the superset relationship is inthe presence, deleting a redundant sequence, and extracting a global maximum frequent sequence. The maximal frequent sequential pattern mining method based on the distributed log has higher efficiency, and supports the mining of larger-scale event sequence data.

The invention discloses an environmental flue gas monitoring and early warning system of a thermal power plant, which comprises flue gas monitoring equipment, and the output end of the flue gas monitoring equipment is bidirectionally electrically connected with an intelligent terminal. The present invention uses flue gas monitoring equipment, gaseous pollutant emission concentration monitoring, flue gas parameter monitoring, particulate matter emission concentration monitoring, data collection and processing, intelligent terminals, cloud servers, early warning intelligent analysis auxiliary decision-making, environmental protection departments, enterprise internal monitoring platforms and The combined use of the alarm system solves the problem that the automatic monitoring equipment of the existing thermal power plant environmental flue gas monitoring and early warning system has low operating efficiency, the accuracy of automatic monitoring data is not high, and it cannot truthfully reflect the real situation of the main pollutant emissions of the enterprise , the thermal power plant environmental flue gas monitoring and early warning system has the advantages of being able to realize the monitoring and control of power generation equipment, and at the same time provide the functions of data statistics, analysis and report management.

The invention discloses an elevator system which is provided with a lift car accidental movement protecting device. When the elevator lift car starts to goes up or down from a floorslab of an elevator lobby on the condition that a lift car door and a landing door are open, the lift car accidental movement protecting device judges that the lift car moves accidentally and abnormally and stops the lift car. The elevator system comprises a lift car door switch (43) for detecting the open state of the lift car door, a landing door switch (41) for detecting the open state of the landing door, a detecting device (21) for detecting the speed and amount of movement of the lift car, a position sensor (30) for detecting the floor reference position of each floor, and a security controller (1) for judging lift car sudden movement abnormity according to the detecting results of the detecting device (21) and the position sensor (30) and an abnormity judgment threshold value which is set according to the lift car position and used for judging speed abnormity of the lift car. Therefore, the lift car accidental movement is practically detected within a shorter movement distance (as early as possible), and the reduction of the operating efficiency of the elevator is prevented while the security is improved.

The invention discloses a single-cabinet data center. The data center is a small-sized data center; physical space inside a standard cabinet is adopted; internal equipment is designed through adopting a preset modular system integration mode; and a UPS module, a battery module, a power distribution module, a refrigeration module, a monitoring module and an IT module are integrated. A cold passage and a hot passage are isolated from the front side and rear side of the standard cabinet respectively, and closing degree and energy-saving performance are improved in an emphasized manner; and management and human-computer interaction performance is monitored. The single-cabinet data center of the invention has the advantages of integration, rapid deployment, on-demand expansion, reduced costs, environmental adaptability, high operational efficiency, remote guard and the like.

The invention discloses an inductive brushless direct current motor drive method which is characterized by comprising the following steps: (1) after a power supply is started, a system automatically enters an inductive motor starting mode and then operates in an inductive drive mode; (2) the system calculates the rotating speed n of a motor according to a signal of a rotor position sensor; and (3) whether the rotating speed n of the motor is more than the threshold rotating speed na, at which the preset inductive drive is converted to noninductive drive, is judged, etc. The inductive brushless direct current motor drive method not only effectively reduces the influences of the position error of a Hall sensor on the operating efficiency and the noises of the brushless direct current motor, but also effectively increases the yield of production of a single-phase brushless direct current motor, so that the production cost of the motor is lowered.

A vehicle panel stowage system advantageously provides for stowage of a removable vehicle panel on the exterior of the vehicle. The panel can be stowed substantially flush with a stowage rack on the exterior of the vehicle. The stowage system advantageously protects portions of the removable panel from the environment when positioned on the stowage rack.

The invention relates to an offshore natural gas liquefying method and an offshore natural gas liquefying device. The method comprises the following steps of: 1) pretreating natural gas extracted from seabed, and inputting into a heat exchange cold box; 2) continuously reducing pressure and temperature of preset carbon dioxide gas in a carbon dioxide pre-cooling circulating system, and introducing the carbon dioxide gas into the heat exchange cold box; 3) compressing preset nitrogen in a double nitrogen expansion refrigeration circulating system into high pressure nitrogen, introducing the high pressure nitrogen into the heat exchange cold box, precooling by carbon dioxide, directly reducing pressure and temperature of one path of nitrogen by using an expander, continuously precooling the other path of nitrogen and reducing pressure and temperature by using the expander, returning the two path of low pressure nitrogen to the heat exchange cold box, exchanging heat, raising the temperature, lifting the pressure, reducing the temperature, and returning to the heat exchange cold box; and 4) precooling the pretreated natural gas by using the carbon dioxide gas in the heat exchange cold box, introducing into a heavy hydrocarbon separation unit, gradually cooling the natural gas by the returned nitrogen, removing the heavy hydrocarbon by using a gas-liquid separator and a rectifying column, cooling, throttling and reducing temperature by using a throttle valve, introducing a gas-liquid mixture into a buffer tank, introducing a liquid phase into a storage tank for storage, discharging a gas phase from the top of the buffer tank and collecting the gas phase.

The invention discloses a pellet feed weighing device. According to the technical key point, the pellet feed weighing device comprises a machine body, a material receiving copper, a motor, a conveyingbelt, a plurality of rotary rollers, a controller, a weighing device body and a positioning sensor. The material receiving copper is arranged on the machine body, the rotary rollers are rotatably mounted on the machine body, and the conveying belt is arranged on the rotary rollers in a sleeving mode and can rotate on the rotary rollers. The motor is mounted on the machine body, and a rotary shaftof the motor is connected with the rotary rollers. The positioning sensor is arranged at the lower end of the weighing device body, a signal output end of the positioning sensor is connected to a first input end of the controller, and a signal output end of the weighing device body is connected to a second input end of the controller. The controller is arranged on the machine body, a first outputend of the controller is connected to a control end of the motor, and a second output end of the controller is connected to a control end of the weighing device body. The pellet feed weighing devicecan automatically weigh and collect dried pellet feeds, and the labor intensity of workers is reduced.

The invention discloses a system and a method for managing large-scale automobile fuel batteries, and relates to the field of batteries. The system is characterized by comprising a battery pack consisting of a plurality of batteries and an equalizing system consisting of a plurality of equalizing modules; each battery in the battery pack is respectively connected with each equalizing module in the equalizing system; the equalizing modules are in signal connection to a measuring plate for measuring the voltages and temperatures of battery cells; and the measuring plate is connected into an internal bus. The system also comprises a display control module for displaying the operating state of the system, an electric quantity estimating module for estimating the electric quantity of the batteries, a central processing system for controlling the operation of the system, a specialist diagnosis module for carrying out real-time diagnosis on the battery cells and giving an alarm and a communication module for communicating with other systems of an automobile. The system has the advantages of accurate evaluation, low operating cost, high practicability, intelligence, humanization and the like.

The invention provides a multi-version data storage management method based on a distributed database, belonging to the cloud technology field. The method is applied to a routing node of a distributeddatabase. The method comprises the following steps: receiving a data writing request for writing target data to the distributed database; Querying a current version number of the target data in a data version list according to an index of the target data, and adding a pre-designed value to the current version number to obtain a latest version number of the target data; Determining a target data node of the distributed database according to the latest version number, and allocating the data write request to the target data node; Updating a current version number of the target data in the dataversion list to the latest version number. The present disclosure can implement data traceback of any version of multi-version data, reduce data storage amount of a database, and improve efficiency.

The invention discloses an extraction needle mechanism of a double-station winder. The extraction needle mechanism comprises a winding head base, a fixing frame, a transverse driving device and a transverse moving table, wherein the winding head base is provided with two needle winding shafts; the front ends of the two needle winding shafts are provided with needle winding devices; the winding head base is further provided with a needle winding shaft driving transmission assembly; the transverse moving table can move along the axis direction of each needle winding shaft on the fixing frame under the driving action of the transverse driving device, and is provided with a longitudinal moving table and a longitudinal driving device; the longitudinal moving table can move on the longitudinal moving table under the driving action of the longitudinal driving device; and the longitudinal moving table is provided with a needle claw. Due to the adoption of an extraction needle displacement way, the equipment efficiency is increased, full-speed running of station reversing is realized, and running efficiency of equipment is increased; and radial movement of an axially-driven winding needle is realized, and functional integration realization of a winding head and a winding needle is ensured.

The invention discloses an ice-reservation heat pump energy-saving unit, which comprises the following parts: cold water unit, refrigerating working fluid cooling water circulation system, ice-reservation system, indoor cold-and-heat supply system and computer self-control device (13), wherein the cold water unit contains compressor (1), first heat-exchanger (5), electronic expansion valve (6), second heat-exchanger (7), plate-type refrigerating working fluid heat-exchanger (2), first electronic three-way valve (3), second electronic three-way valve (8), electromagnetic valve (9), which forms a loop through refrigerating working fluid pipe connection. The invention can be applied in the air-conditioner energy-saving domain widely.

The invention provides a road segment detection method considering the traffic demand and road network operation efficiency, which obtains the generalized travel cost and other information of each urban road in an urban road network by collecting and sorting related travel data of the urban road. By measuring the traffic demand and establishing a travel demand OD matrix and an algorithm based on auser equilibrium model, it is possible to find invalid road segments in the urban road network under the current traffic demand level. Through matrix transformation of the road segment cost and the route cost, the method allows traffic managers to know the timing of the change of the effectiveness of the road segments when the traffic demand changes. The advantages of the invention lie in that the detection method can be used to analyze the validity of the road segments in real time and can be used to analyze complex urban road networks of multiple OD pairs; and with the method, the traffic managers do not need to change hardware facilities of the road network and can timely restrict and open such road segments in the road network to improve the overall operation efficiency of the urban road network.

The invention relates to a remote management method of a charging pile, and refers to a remote management technique of the charging pile. The invention aims to solve the problem of low running efficiency of an electric automobile for the charge mode of the electric automobile arriving at the scene has to wait at present. Through the remote management of the charging pile, the charging pile reports its load and expected load to a control center; the control center summarizes the load condition of every charging pile, and reports relevant charging pile state to the electric automobile with the charging demand for user choice. Moreover, the control center can dispatch the charging of the electric automobile according to the collected charging pile state and the charging request of the electric automobile. The invention is applicable to the remote management of the charging pile.

The invention relates to the field of mooring positioning technology and discloses a mooring positioning device for an open caisson and a construction method of the mooring positioning device. The device comprises front positioning structures, rear positioning structures, left side anchoring ingots, right side anchoring ingots, fair leads, mooring ropes and mooring rope take-up devices. The front positioning structures and the rear positioning structures are arranged on the upstream position and the downstream position of the open caisson, and the left side anchoring ingots and the right side anchoring ingots are arranged on the left side and the right side which are perpendicular to the water flow direction; the fair leads and the mooring rope take-up devices are arranged on the open caisson in a one-to-one correspondence mode; one side anchoring ingot is connected with one mooring rope take-up device through one set of mooring ropes via one fair lead, one positioning structure is connected with one mooring rope take-up device through one set of mooring ropes via one fair lead, and acting points of the mooring ropes are located at riverbed positions of the positioning structures. The device is a rigid positioning system with a few mooring ropes, the positioning structures and the side anchoring ingots correspond to top positioning devices of the open caisson one to one through the mooring ropes so that definite stressing can be achieved, and the positioning structures are stressed on the riverbed surface. The device is free of deepwater influences, easy to construct, capable of accurately positioning the open caisson and high in work efficiency.