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67results about How to "Reduce runtime" patented technology

Cloud auditing method with lightweight user dynamic revocation and data dynamic update

The invention discloses a cloud auditing method with lightweight user dynamic revocation and data dynamic update. First of all, a user can implement efficient dynamic revocation (including replacementof public and private keys), and in a user revocation stage, multiple one-way proxy re-signature technologies are adopted, and a new user only needs to compute a re-signature key and does not need todownload a data re-signature from a cloud end and then upload to the cloud end; then, the data can be guaranteed to be updated (inserted, deleted and modified) dynamically in real time, and by introducing a virtual index to identity recognition codes of data blocks, when the data are updated dynamically, only the identity recognition codes of the updated data blocks change and the identity recognition codes of the rest data blocks remain unchanged; and at last, in a re-signature stage, a cloud server performs re-signature instead of a new appointed user, and in an auditing stage, a third party auditing center performs verification on integrity of the data stored at the cloud end instead of a current user; the computation overhead of a terminal user and the communication overhead of a system are greatly relieved; and the cloud auditing method is efficient and secure.
Owner:趣橙(上海)信息技术有限公司

Self-cleaning method and device for air conditioner, air conditioner and electronic device

The invention discloses a self-cleaning method and device for an air conditioner, the air conditioner and an electronic device. The self-cleaning method comprises the steps that a self-cleaning instruction for the air conditioner is responded, and a refrigeration and frosting stage is started; the situation that the air conditioner meets the ending condition of the refrigeration and frosting stageis recognized, a compressor in the air conditioner is controlled to be stopped for a preset time length, and an indoor fan is maintained to rotate in the compressor stopping process; and the air conditioner is controlled to enter a heating and defrosting stage. According to the method, before the air conditioner is controlled to enter the heating and defrosting stage, the compressor can be controlled to be stopped, and the problem that the air conditioner is damaged due to the fact that the high-low pressure difference is too large due to switching of the refrigeration and heating modes of the air conditioner can be avoided; and the indoor fan is maintained to rotate in the compressor stopping process, thus, an indoor heat exchanger is defrosted in advance through indoor air with the hightemperature, a heat source can be effectively utilized, the operation time length of the defrosting stage can be shortened, and then the waiting time of a user is shortened.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1

Multimedia integrated steganography analysis method based on window hypothesis testing

The invention relates to a multimedia integrated steganography analysis method based on window hypothesis testing. The method comprises the steps of (S1) preparing an original text set and a hidden text set, and dividing a training set and a testing set, (S2) extracting characteristic of the training set, and training to obtain a predictor, (S3) placing the testing set into the predictor to obtain output, fitting a probability distribution model according to the output, and estimating the parameter of the model by using the output, (S41) sampling the testing set according to the sizes of different windows, (S42) obtaining the null hypothesis and alternative hypothesis of a hypothesis test according to the probability distribution model and parameter selected in the (S3), (S43) according to the specific false alarm rate and false negative rate of a user, determining the judgment condition of the hypothesis test with the combination of the sampling scale of the windows, and carrying out statistical inference and window hypothesis testing, and (S5) carrying out comprehensive analysis decision on the result of the window hypothesis test. According to the method, whether the sample comprises steganography information or not can be detected, the false alarm rate and false negative rate of integrated steganography analysis can be reduced, and the running speed of steganography analysis is improved.
Owner:XIAMEN UNIV

Air conditioning system and control method thereof

ActiveCN114562775AOptimizing deployment usageReduce latent heat cooling capacityMechanical apparatusLighting and heating apparatusProcess engineeringHeat exchanger
The invention is suitable for the technical field of air conditioners, and provides an air conditioning system and a control method thereof. The fan is used for air circulation; the heat exchanger has a first heat exchange state and a second heat exchange state; the pipeline assembly comprises a first water inlet pipe and a first water outlet pipe which are respectively communicated with the heat exchanger so as to circulate a heat exchange medium together with the heat exchanger; the first water inlet pipe and the first water outlet pipe are configured to enable the heat exchanger to be in a first heat exchange state when the refrigeration requirement is smaller than or equal to a first preset threshold value so that the heat exchange medium and air of the fan can exchange heat in the forward direction, and are further configured to enable the heat exchanger to be in a second heat exchange state when the refrigeration requirement is larger than a second preset threshold value. And the reverse heat exchange between the heat exchange medium and the air of the fan is realized. According to the arrangement, when the refrigeration requirement is smaller than or equal to the first preset threshold value, the sensible heat ratio is increased while the refrigeration requirement is met, and therefore the energy consumption of the air conditioning system can be reduced.
Owner:深圳市英威腾网能技术有限公司

Quantitative device and cooking utensil

PendingCN108143291AAvoid Activity Blocking IssuesImprove smoothness of movementCooking vesselsBeverage vesselsEngineering
The invention provides a quantitative device and a cooking utensil. The quantitative device comprises a storage box body, a box door and a quantitative block, wherein the storage box body is providedwith an outlet; the box door is arranged at the outlet; the quantitative block is located on the lower portion of the storage box body, and a quantitative groove with an upper opening is formed in thequantitative block; the quantitative block can move to enable the upper opening and the outlet to correspond to each other or to be staggered with each other; when the upper opening and the outlet are staggered, the box door shields the outlet to make the outlet closed; when the upper opening and the outlet correspond to each other, the box door avoids the outlet so as to make the outlet opened.According to the quantitative device, the box door is arranged at the outlet of the storage box body, and when the quantitative block moves relative to the storage box body to make the upper opening and the outlet staggered, the box door is used for intercepting fallen materials at the outlet so that the problem that the materials are clamped between the inner wall of the upper opening and the inner wall of the outlet and accordingly the quantitative block is blocked can be avoided, and the moving smoothness of the quantitative block is ensured.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD

Method for balancing interconnection number between different partitions of circuit and readable storage medium

ActiveCN113221501AThe maximum excess is smallImprovement beyondComputer aided designSpecial data processing applicationsBalanced circuitEngineering
The invention discloses a method for balancing interconnection numbers among different partitions of a circuit and a readable storage medium. The method comprises the steps of 1, acquiring a hypergraph with initial partitions; 2, obtaining a first matrix A according to the division of a driving node and a plurality of driven nodes on the line network; 3, obtaining a preprocessing division pair according to the actual connecting line number of the first matrix A and the physical connecting line number of the matrix B; 4, obtaining a moving mode of the to-be-moved node according to a moving result of the to-be-moved node of the preset line network corresponding to the pre-processing division in the preset division; and 5, based on the moving mode of the to-be-moved node, determining a final moving result according to the relationship between the second matrix A obtained after the step 4 and a preset number of times. According to the method, the physical connection line exceeding amount is eliminated or improved by changing the positions of the nodes, so that the maximum exceeding amount of the inter-division connection lines is as small as possible. Meanwhile, no connection is ensured to be generated among partitions which cannot be interconnected.
Owner:S2C

High-voltage power distribution cabinet with temperature adjusting device and temperature adjusting method

The invention relates to a high-voltage power distribution cabinet with a temperature adjusting device and a temperature adjusting method. The high-voltage power distribution cabinet comprises a cabinet body and a cabinet door, a cooling device is arranged in the cabinet body, the cooling device comprises a refrigeration cooling device and a ventilation cooling device, and the refrigeration cooling device and the ventilation cooling device are controlled by a controller to be opened and closed. The refrigeration cooling device and the ventilation cooling device are not started at the same time, an indoor temperature sensor is arranged in the cabinet body, an outdoor temperature sensor is arranged outside the cabinet body, and the controller is electrically connected with the indoor temperature sensor and the outdoor temperature sensor. A heating device is further arranged in the cabinet body, and the controller is further used for controlling starting and stopping of the heating device. The power distribution cabinet has the effect of maintaining the temperature in the power distribution cabinet at the temperature for ensuring the normal operation of electrical equipment.
Owner:上海滨海电力工程有限公司

Method for overcoming radar extended Kalman track filtering divergence

The invention discloses a method for overcoming radar extended Kalman track filtering divergence. The method comprises the following steps: carrying out system modeling according to a conventional extended Kalman filtering method; assuming that the state of the track filtering k moment is X(k|k), and the covariance matrix is P(k|k); performing one-step prediction on the state at the moment k to obtain a prediction state and a prediction covariance matrix at the moment k + 1; using the correction matrix or the correction coefficient to carry out anti-divergence processing on the prediction covariance matrix to obtain a corrected prediction covariance matrix; updating a prediction state through a measured value of a radar detection target system at the k + 1 moment, calculating an innovation vector, an innovation covariance matrix and a Kalman gain matrix, and replacing an original prediction covariance matrix with the corrected prediction covariance matrix in the calculation process; and calculating a target state and a covariance matrix at the k + 1 moment. According to the invention, the filtering output trend is corrected, the precision of the filtering result is improved, and the divergence condition in the track filtering is effectively overcome.
Owner:南京雷电信息技术有限公司

Method and system for controlling flow dividing at crossroad through traffic lights

The invention discloses a method for controlling flow dividing at a crossroad through traffic lights, and the method specifically comprises the following steps: (1), turning off the green light in advance if there is no vehicle at one side of a first trunk line, wherein the first trunk line and a second trunk line are interlaced at a main intersection; (2), turning off the green light in advance if there is no vehicle at one side of the second trunk line; (3), enabling a light board to be yellow because a main road light board at an intersection of an auxiliary road is also yellow under the normal condition, enabling the yellow light of the main road to turn green once a person on the auxiliary road presses the button, and enabling the green light to turn red after 20S, wherein when the light on the main road turns red, the light board of the auxiliary road turns green. The invention also discloses a system employing the method. Speed bumps are laid in the range of 200m from the main intersection on the first and second trunk lines, and are provided with resistive strain weight sensors. Monitoring devices are respectively disposed above a waiting lane of the first trunk line and awaiting lane of the second trunk line which is 200m far from the main intersection. The method and system improve the traffic efficiency, and guarantee the safety.
Owner:IANGSU COLLEGE OF ENG & TECH

Multimedia Synthetic Steganalysis Method Based on Window Hypothesis Testing

The invention relates to a multi-media comprehensive steganalysis method based on a window-type hypothesis test, comprising the steps of: S1 preparing an original text set and a steganographic set, and dividing a training set and a verification set; S2 extracting features from the training set, and training to obtain a predictor; S3 puts the verification set into the predictor to get the output, fits the probability distribution model according to the output, and uses the output to estimate the parameters of the selected model; S41 samples the test set according to different window sizes; S42 according to the probability selected in step S3 Distribution model and parameters to obtain the null hypothesis and alternative hypothesis of hypothesis testing; S43 determines the judgment conditions of hypothesis testing according to the false alarm rate and missed detection rate specified by the user, combined with the sampling scale of the window, and performs statistical inference and window type hypothesis testing ; S5 conducts comprehensive analysis and decision-making on the results of the window hypothesis test. The invention can detect and determine whether steganographic information is contained in samples, reduce the false alarm rate and missed detection rate of comprehensive steganographic analysis, and improve the operation speed of steganographic analysis.
Owner:XIAMEN UNIV

Efficient express item conveying system

The invention discloses an efficient express item conveying system. A controller, an express item delivering hall, a conveying well and an express item recycling bin connected with elevator front chambers of the second floor and the floors above the second floor are included; the express item delivering hall is connected with the conveying well though a delivering door; a conveying bin and a balancing weight are arranged in the conveying well, and the top of the conveying well is provided with a traction mechanism; the traction mechanism is in transmission connection with the conveying bin andthe balancing weight through a traction rope; the conveying bin is provided with N-1 partition bins; the front end of each partition bin is provided with a bin door, the rear end of each partition bin is provided with an unloader, and N is the floor number; and each express item receiving bin is provided with an item taking door located in the corresponding floor elevator front chamber and a receiving door located in the conveying well and being in butt joint with the conveying bin. Due to the efficient express item conveying system, on the basis that express items are fast and efficiently conveyed to a recipient, the time for office staff to wait for an elevator is shortened, and the running cost and the maintaining cost of the elevator are lowered.
Owner:TIANJIN UNIV RES INST OF ARCHITECTRUAL DESIGN & URBAN PLANNING

Thermal management control device and method

The invention provides a thermal management control device and method, and relates to the technical field of temperature control. The thermal management control device comprises a processor, a sensorcomponent and an alarm module. The processor is used for controlling heat pipe equipment to start adjusting the indoor temperature of a machine room when the indoor temperature exceeds the first preset range, the processor is further used for controlling at least one set of air conditioner equipment to start adjusting the indoor temperature when the indoor temperature exceeds the third preset range, wherein the third preset range contains the first preset range. The alarm module is used for sending out a first alert notification when the indoor temperature exceeds the largest temperature valuein the second preset range. Accordingly, start and stop of the heat pipe equipment and the air conditioner equipment are controlled on the basis of the first preset range, the second preset range andthe third preset range, and the control precision on the temperature is helped to be improved. In addition, by means of cooperation of the heat pipe equipment and the air conditioner equipment, the temperature of the machine room is adjusted, the running time of the air conditioner equipment is helped to be shortened, and then system power consumption is lowered.
Owner:江苏泽镔信息科技有限公司
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