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310results about How to "Improve speed" patented technology

Fault on-line diagnosis and early warning method of flameproof dry-type transformer for mine

The invention provides a fault on-line diagnosis and early warning method of a flameproof dry-type transformer for mine in order to raise the accuracy and rapidity of fault diagnosis. The method comprises the following steps: determining monitoring quantity; extracting characteristic values: extracting a three-dimensional spectra parameter and two-dimensional statistical parameter in a partial discharge signal as characteristic quantities, with regard to operation voltage, current and iron core leakage current, extracting effective values of the operation voltage, the current and the iron core leakage current as characteristic values, and taking real-time values of a temperature parameter as characteristic quantities; using a normalization method to calculate a corresponding value of each characteristic quantity and taking the corresponding value as an input parameter of an intelligent diagnosis system; collecting values of each monitoring quantity under different environment, and obtaining training and testing samples of a nerve network under corresponding environment; establishing a nerve network: selecting a generalized RBF nerve network intelligent diagnosis method to establish a nerve network; utilizing a sample data training nerve network and forming a fault diagnosis tool; establishing a database; storing collected real time data and the above diagnosis result into a ground server real-time database and a real-time early warning information table, and carrying out diagnosis and early warning through an expert system.
Owner:TAIYUAN UNIV OF TECH

Fingerprint-based technique for surveying an audience

A fingerprint reading mechanism is utilized so as to determine which audience members are present during various stages of an audio, visual, or audiovisual program. The fingerprint reading mechanism is associated with a processing mechanism, an “enter” button, an “exit” button, a clock, memory, an output indicator, and a code receiver. As an audience member enters or exits the program performance area, the audience member places a hand, or portion thereof, in proximity to the fingerprint reading mechanism, and also presses the “enter” or “exit” button as appropriate. Optionally, the functionalities of the “enter” button and the fingerprint reading mechanism may be combined into a single automatically activated enter/fingerprint reading mechanism, and the functionalities of the “exit” button and the fingerprint reading mechanism may be combined into a single automatically activated exit/fingerprint reading mechanism. The fingerprint reading mechanism generates a fingerprint data record in response to a human hand, or portion thereof, held in proximity thereto. The processing mechanism compares the generated fingerprint data record with each of a plurality of stored fingerprint data records accessed from memory so as to permit retrieval of an audience member identifier corresponding to the generated fingerprint data record. An audience log entry associates the retrieved audience member identifier with a corresponding clock time parameter and a corresponding enter/exit parameter. In response to retrieving an audience member identifier from a generated set of fingerprint data, the processing mechanism creates and stores an audience log entry by loading the current value of the clock as the clock time parameter.
Owner:WEINBLATT LEE S

Computer system and network interface with hardware based rule checking for embedded firewall

A data processing system adapted for high-speed network communications, a method for managing a network interface and a network interface for such system, are provided, in which processing of packets received over the network is achieved by embedded logic at the network interface level. Incoming packets on the network interface are parsed and classified as they are stored in a buffer memory. Functional logic coupled to the buffer memory on the network interface is enabled to access any data field within a packet in a single cycle, using pointers and packet classification information produced by the parsing and classifying step. Results of operations on the data fields in the packets are available before the packets are transferred out of the buffer memory. A data processing system, a method for management of a network interface and a network interface are also provided by the present invention that include an embedded firewall at the network interface level of the system, which protects against inside and outside attacks on the security of data processing system. Furthermore, a data processing system, a method for management of a network interface and a network interface are a provided by the present invention that support class of service management for packets incoming from the network, by applying priority rules at the network interface level of the system.
Owner:HEWLETT-PACKARD ENTERPRISE DEV LP

Intelligent supermarket cashier system and method based on mobile payment and IOT (Internet of Things)

The invention discloses an intelligent supermarket cashier system and method based on mobile payment and the IOT (Internet of Things), and relates to the field of smart city application. The system comprises a plurality of commodity bar code scanners, a plurality of intelligent shopping carts, a background management center, a plurality of self-service cashier devices, an alarm device, and a wireless network covering a whole supermarket. The intelligent shopping carts are provided with price recognition modules and communication modules, so as to recognize the price and number of commodities in the shopping carts and transmit the price and number of commodities and the IDs of the shopping carts to the background management center. The background management center calculates the total prices corresponding to the IDs. The self-service cashier devices automatically recognize the IDs of the shopping carts, and display the details and total prices of corresponding commodities. A consumer can finish payment through a mobile terminal. The system can achieve the self-service shopping and payment, saves the time in searching the commodities, saves the time of a cashier in scanning the price of each commodity, reduces the waiting time of the consumer, is convenient and quick, and can remarkably improve the user experience.
Owner:WUHAN POST & TELECOMM RES INST CO LTD

Method for controlling steering stability of distributed-drive electric vehicle

The invention discloses a method for controlling steering stability of a distributed-drive electric vehicle. The method comprises the following steps of: step 1: according to signals detected by a vehicle speed sensor and a steering wheel angle sensor, obtaining a longitudinal vehicle speed u and a forewheel steering angle delta of a running vehicle through calculation of a state observation module; step 2: according to the longitudinal vehicle speed u and the forewheel steering angle delta obtained in the step 1, and obtaining a reference yaw rate omega rd of the running vehicle by a linear two-degree-of-freedom vehicle dynamic model; step 3: detecting an actual yaw rate omega r of the vehicle by using a gyroscope; step 4: according to the reference yaw rate omega rd and the actual yaw rate omega r, designing a steering stability controller and obtaining a yaw moment required by the steering stability control of the vehicle; and step 5: using the minimum tire utilization rate as an optimization objective, designing a distribution function and obtaining a driving torque Ti of four wheel hub motors. The phenomenon of ''chattering'' of a system is effectively suppressed, robustness is improved, and the steering stability of the distributed-drive electric vehicle is well controlled.
Owner:JIANGSU UNIV

Data storage method and apparatus utilizing evolution and hashing

Hashing functions have many practical applications in data storage and retrieval. Perfect hashing functions are extremely difficult to find, especially if the data set is large and without large-scale structure. There are great rewards for finding good hashing functions, considering the savings in computational time such functions provide, and much effort has been expended in this search. This in mind, we present a strong competitive evolutionary method to locate efficient hashing functions for specific data sets by sampling and evolving from the set of polynomials over the ring of integers mod n. We find favorable results that seem to indicate the power and usefulness of evolutionary methods in this search. Polynomials thus generated are found to have consistently better collision frequencies than other hashing methods. This results in a reduction in average number of array probes per data element hashed by a factor of two. Presented herein is an evolutionary algorithm to locate efficient hashing functions for specific data sets. Polynomials are used to investigate and evaluate various evolutionary strategies. Populations of random polynomials are generated, and then selection and mutation serve to eliminate unfit polynomials. The results are favorable and indicate the power and usefulness of evolutionary methods in hashing. The average number of collisions using the algorithm presented herein is about one-half of the number of collisions using other hashing methods. Efficient methods of data storage and retrieval are essential to today's information economy. Despite the cur-rent obstacles to creating efficient hashing functions, hashing is widely used due to its efficient data access. This study investigates the feasibility of overcoming such obstacles through the application of Darwin's ideas by modeling the basic principles of biological evolution in a computer. Polynomials over Zn are the evolutionary units and it is believed that competition and selection based on performance would locate polynomials that make efficient hashing functions.
Owner:HUSSAIN DANIAR

Data transmission system and data transmission method for underwater acoustic network

The invention relates to a data transmission system for an underwater acoustic network, which comprises a plurality of independent underwater nodes, wherein each underwater node is equivalently connected with at least the other underwater node. The data transmission system also comprises a transmitting optical antenna, a receiving optical antenna, a light source, an optical modulator, an optical receiver, an underwater acoustic transducer/receiving transducer, a digital signal processor and a positioning module, wherein the positioning module is provided with a rotating device and used for completing the alignment between the light source and the optical receiver; the transmitting optical antenna, the light source, the optical modulator and the digital signal processor are in signal connection with each other in turn; the receiving optical antenna, the optical receiver and the digital signal processor are in signal connection with each other in turn; the digital signal processor is also in signal connection with the positioning module and the underwater acoustic transducer/receiving transducer respectively; and the light source is a blue-green laser source. The invention also relates to a data transmission method for the underwater acoustic network. The invention reduces the collision probability of data in the transmission process, improves the success rate of the construction of a communication link, saves the network bandwidth, and improves the network throughout.
Owner:SOUTH CHINA UNIV OF TECH
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