103results about How to "Fast real-time response" patented technology

Legality expressions are systematically pre-processed, organized, and stored to achieve faster real-time response, improved predictability, and increased reliability for queries against a large volume of legality expressions. Exponential improvements in both the time to locate the set of legality expressions matching specified search criteria and the processing costs of evaluating the request against the matching legality expressions are achieved using the disclosed systems, devices, and methods. The systems, devices, and methods are unique to the optimization of legality expression processing, but they can also enable the use of other optimization techniques for processing large amounts of data.

The invention discloses a resource acquiring method and device on the Internet. The resource acquiring method on the Internet, provided by the embodiment of the invention, comprises the following steps: inquiring whether requested target resources exist in the cache of a proxy server according to a resource acquiring request when the resource acquiring request of a request end is received; returning the inquired target resources to the request end when the requested target resources exist in the cache, acquiring the target resources from a resource provider when the requested target resources do not exist in the cache, storing the target resources in the cache of the proxy server, and returning the acquired target resources to the request end; and processing the target resources acquired from the resource provider accordingly and replacing the corresponding target resources in the cache with the processing results.

The invention discloses a topic model-based judgment document similarity analysis method. A semantic-based semi-automatic and universal similarity analysis method is proposed for judgment documents by adopting an LDA (Latent Dirichlet Allocation) topic model in machine learning. The method mainly comprises the steps of selecting corpora; establishing a similarity tag; performing text preprocessing; performing input selection; performing parameter setting; performing iterative training; generating a model; applying the model; and the like. Based on a general similarity analysis method, the characteristics of rich specialized vocabularies and complex semantics in contents of the judgment documents are fully considered, and the semi-structured characteristics of the judgment documents are utilized, so that the accuracy and applicability of judgment document similarity analysis are improved.

The invention discloses a vehicle-mounted fatigue early warning device and a method thereof. The vehicle-mounted fatigue early warning device comprises an image acquisition unit, an image processing and positioning unit, a fatigue detection unit, a control unit used for controlling the coordinated operation of all functional units and a warning unit. The method comprises the following: the first step, acquiring pupil image data; the second step, position-processing the acquired pupil image data; the third step, working out a pupil area, and judging whether a driver is tired according to the percentage of eye-closing time against unit time; and the fourth step, sending out a warning signal according to a judging result. The device uses an FPGA chip, and realizes the eye positioning algorithm in a mode of digital circuit system. Compared with the prior art, the device has the advantages of high real-time response, quick and timely early warning on fatigue, small volume, low power consumption, convenient assembly and the like, so that the device is quite suitably applied to a vehicle-mounted electric system.

The invention discloses a spam mail filtering system and method based on clusters. The system comprises a cluster module, a mail training module, a characteristic base storage module and a mail filtering module. The method includes that S1.1 training mails and unmarked mails are obtained from a mail backup system; S1.2 a cluster preprocessing module preprocesses the mails; S1.3 a cluster analyzing module divides the preprocessed mails into different clusters; S1.4 a cluster central computing module computes vector expression of the clusters; S1.5 the training module studies marked mails in the clusters and updates characteristic bases corresponding to the clusters; S2.1 mails required to be filtered are obtained from a mail system; S2.2 a mail class attribute distinguishing module calculates the cluster most similar to mail content; S2.3 a mail characteristic extraction module conducts characteristic extraction on the mails to be distinguished; S2.4 a mail distinguishing module shows a distinguishing result according to the mail characteristics and the corresponding characteristic bases. The system and method has the advantages of being high in extraction speed, high in accuracy and good in effect.

The invention relates to the technical field of computer networks, and discloses a method for real-time statistics of the number of network users. According to the method for real-time statistics of the number of network users, network messages, meeting various protocols, in the traffic are analyzed thoroughly on the premise that all the network traffic of various terminal users in some region is obtained, key information is extracted, appropriate structures are selected according to the requirement of statistics, corresponding user attributes are added, assembling storage is carried out, and real-time performance of the query is improved due to the fact that a local cache technology is adopted; due to the fact that a user time ageing technology is used for correspondingly dealing with the situation that offline messages of dynamic users are lost, and the situation that static users do not have offline messages; in order to ensure accuracy of user statistics, a system provides interfaces for the users, the user range, namely the IP section, of the region is set through the interfaces, and interference caused by the transit traffic to statistics is ensured; when access is carried out on static IPs for the first time, the asynchronous processing mode is adopted, and the real-time response speed of the system is increased.

The invention discloses a frequency sweep and frequency following control method for frequency of an ultrasonic welding power source, comprising the following steps: Step 1, after an ultrasonic generator is turned on, an MCU controller controls an inverter to output certain initial working frequency through a driving controller; Step 2, the working current in an ultrasonic system is detected, andthe frequency sweeping operation mode is that the MCU controller controls the output frequency of the inverter to be f0+[delta]f; and Step 3, the working current in the ultrasonic system is detected.The method can realize the ultrasonic generator frequency tracking function, so that the ultrasonic generator can follow change in the equivalent capacitance and resistance of the ultrasonic generatorload with the operation, the inherent frequency of the ultrasonic acoustic system is caused to drift, the entire ultrasonic system is enabled to work in a resonant state, and the maximum power is output. The frequency sweep and frequency following control method is fast in real-time reflection speed, the circuit is simple, and the cost is relatively low.

The invention discloses a two-motor driven variable-stiffness elastic joint of a robot. The two-motor driven variable-stiffness elastic joint comprises an output shaft, a flexible transmission mechanism and a driving end which are positioned on the same rotating axial line, wherein the driving end comprises two hollow shaft driving motors coaxially connected to two ends of the flexible transmission mechanism in a driving manner; the output shaft is fixedly connected with the middle part of the flexible transmission mechanism, and one end of the output shaft penetrates through and extends out of hollow shafts of the hollow shaft driving motors; under the impact of different loads on the output shaft, the two hollow shaft driving motors change an included rotation angle between the two motors to adjust the length of a force arm of the flexible transmission mechanism for driving the output shaft to rotate, thus adjusting the stiffness and realizing elastic buffering. The two-motor driven variable-stiffness elastic joint of the robot has the characteristics of high real-time response speed and high adjustment precision; the safety and the environment friendliness of the robot are improved; the two-motor driven variable-stiffness elastic joint is simple, portable, high in universality and wide in application range.

The invention discloses an online testing device and testing method used in a machine tool spindle thermal error. The testing method comprises the steps of using an eddy current sensor and a thermal imaging instrument to measure in real time the temperature of a spindle temperature sensitive point and thermal deformation at the front end of the spindle in the axial direction and the radial direction of a machine tool in an actual working condition, then the temperature and thermal deformation data are transmitted to a computer through the thermal imaging instrument and a PLC respectively, through a data processing part of thermal error testing software, a temperature sensitive point temperature rise-time curve, a spindle axial thermal deformation-time curve, and a spindle radial thermal deformation-time curve are obtained, and finally a spindle thermal error model is obtained through calculation. The testing device comprises the thermal imaging instrument, the eddy current sensor, a sensor signal conditioner, the PLC, a PLC analog quantity unit, the computer and a support; the thermal imaging instrument is utilized to take the place of a temperature sensor to measure the temperature data of the spindle temperature sensitive point, and the problems that the number of temperature sensors is large, wiring is complicated, and installation is difficult in actual measurement are solved.

The invention provides a ZYNQ FPGA chip, a data processing method of the ZYNQ FPGA chip and a storage medium. A PS part configures the operation parameters of a PE in a PEA of a PL part, and enables the calculation of the PE to be started; the PEA determines a read command, a write command and the number of the write commands according to the operation parameters of the PE, and sends the read / write commands to the read / write command interfaces of a DMA controller respectively; the DMA controller starts a data reading process from an external storage device according to the reading command, andsends the read data to the PEA; the PEA performs calculation according to the read data, and writes a calculation result back to the DMA controller; the DMA controller transmits a calculation resultto an external storage device, and waits for transmission completion and sends an end mark signal corresponding to each write command back to the PEA; and after the PEA receives the end mark signals with the same number as the write commands, the PEA sends an interrupt to the PS part, so that the overall performance of processing a deep learning model is effectively improved.

The invention discloses a piston-type constant-pressure controllable airflow source flow measurement device. The piston-type constant-pressure controllable airflow source flow measurement device is characterized in that the measurement device comprises a linear movement suction system, a measurement test unit and a controller for controlling the suction system and the measurement test unit; the linear movement system is composed of four groups of piston cylinders, screws connected to four piston rods, and a servo motor for driving the screws to rotate, and the measurement test unit comprises a work interface arranged on an air outlet at the front end of each piston cylinder, a work electromagnetic valve, a measurement electromagnetic valve, a standard appliance fixture, a fixture interface and a flow measurement unit. According to the invention, a standard appliance of cigarette paper permeability can be metered; the application is simple and convenient, and experiment research work under different set differential pressure conditions can be achieved in the research field of special equipment of a tobacco laboratory. The device can finish operation through automatic control program set by the controller and improve the detection efficiency and accuracy.

The invention discloses a logistics recommendation method based on clustering and cosine similarity. Firstly, the AP clustering method, the SDbw clustering method and the K-means clustering method are used to calculate the best K value for using the K-means clustering method of the cargo data set and the truck data set. According to the best K value, the cargo data set and the truck data set are subjected to clustering, and the naive Bayesian classifier is used to train two classifiers based on the results obtained from clustering of the cargo data set and the truck data set. The classifiers obtained by training of the truck data set and the cargo data set are used for classification, and then the cosine distances between normalized truck information and all elements of the same type of truck information in the truck data set are calculated, and finally the goods are recommended according to the cosine distances from large to small. The method effectively improves the real-time response speed of the recommendation method.

The invention aims to disclose a radar level meter system and a control method thereof. The radar level meter system comprises a master control unit, a display unit, a configuration data storage unit, a key processing unit, a communication unit, a 4-20MA modulation unit, a reset unit, a transmitted signal processing unit, an echo signal sampling and processing unit and an extension unit; the latter units are all connected with the master control unit. Compared to the prior art, the radar level meter system has the advantages that based on the control method, longer time is provided for the processing of the mathematical operation part in complex echo data, system reliability and timeliness can be met, accurate measurement is achieved, real-time response speed is high, measurement and outputting precision is high, and the aim of the invention is achieved.

The invention relates to a measurement method for a time delay test of a quadrature phase shift keying modulator. A relation formula, meeting the requirements of time delay measurement, of input and output of the quadrature phase shift keying modulator is given, and a time delay measurement model is built through the principle of maximum likelihood estimation. Based on the above, a time delay test system formed based on a digital oscilloscope and a baseband signal and a measurement method for the time delay test are given, and the error components caused by the manual interpretation of the jump edges of input and output signals are eliminated. When a measurement main regulator digital oscilloscope carries out signal collection at a sampling rate of 25GS / s, the uncertainty of a time delay measurement result is not less than 100ps. The system is high in measurement accuracy, is simple and feasible in measurement method, is relatively low in requirements for hardware, is high in real-time response, and can be used for the link time delay calibration of a high-precision satellite measurement and control and navigation positioning system.

The invention relates to the field of locomotive testing, in particular to a method and a device for testing a control cabinet of an electric locomotive. In the method, the device for testing the control cabinet of the electric locomotive is utilized to test the control cabinet of the electric locomotive; the device for testing the control cabinet of the electric locomotive comprises a user terminal and a signal input / output hardware module, and a motor model is stored in the user terminal. The method comprises the following steps: S1. establishing the user terminal connected with a data lineof the signal input / output hardware module; S2. selecting the type of the to-be-tested control cabinet of the electric locomotive by the user terminal, and extracting the motor model which corresponds to the type of the control cabinet of the electric locomotive to serve as the motor model to be tested; S3. transmitting the motor model to be tested to the signal input / output hardware module; S4. receiving the motor model to the tested by the signal input / output hardware module, and downloading the motor model to be tested; and S5. uploading and running the motor model to be tested to perform testing by the signal input / output hardware module.

The invention discloses a puncturing robot. The puncturing robot comprises an image information display device for displaying a tomography scanning device, a six-degree-of-freedommechanical arm and aforce-feedback operating table for controlling the six-degree-of-freedommechanical arm to move, and the control-signal receiving end of the six-degree-of-freedommechanical arm is connected with the control-signal output end of the force-feedback operating table; the six-degree-of-freedommechanical arm comprises a mechanical-arm tail end device, a first linear movement mechanism, a second linear movement mechanism, a third linear movement mechanism, a first rotating moving mechanism and a second rotating moving mechanism, wherein the first linear movement mechanism, the second linear movement mechanism and the third linear movement mechanism can drive the mechanical-arm tail end device to do linear movement, and the first rotating moving mechanism and the second rotating moving mechanism drive the mechanical-arm tail end device to do rotating movement; the force-feedback operating table comprises a force feedbackmechanism and an operating mechanism. By means of the puncturing robot, thetechnical problems that during a lung puncture operation, the radiation dosage is large, and the puncture difficulty of lesser tubercles is high are solved, and therefore the operation efficiency isimproved.

The invention discloses a color bell advertisement platform, broadcast system and broadcast method. The color bell advertisement broadcast method, through on-line or off-line analysis of the relevant information of the calling subscriber and / or the called subscriber, selects the type of the color bell advertisement to be broadcasted for the calling mobile terminal or each mobile terminal, and broadcasts the selected color bell advertisement to the calling subscriber of the calling mobile terminal. The color bell advertisement broadcast method includes: acquiring the relevant information of the calling subscriber and / or the called subscriber after receiving the request for broadcasting the color bell advertisement, selecting the type of the color bell advertisement to be broadcasted according to the information, and returning a response for broadcasting the color bell carrying the corresponding types of information; broadcasting the color bell advertisement corresponding to the information based on the information carried in the response. The invention realizes selective broadcasting of color bell advertisement according to different calling subscribers and / or called subscribers, thereby improving the delivery effect of color bell advertisement.

The invention relates to a laser ultrasonic detection method and system for temperature field in a homogeneous material component. The detection method comprises the steps that (1) the relationship between ultrasonic sound velocity and temperature in a homogeneous material is determined based on a calibration sample; (2) the thickness L of the homogeneous material component to be detected and the temperature T of the cold end are determined; (3) the ultrasonic transit time ttof in the homogeneous material component to be detected is acquired through laser ultrasonic measurement; (4) an ultrasonic temperature field is used to reconstruct a mechanism to acquire the internal temperature field distribution of the homogeneous material component to be detected. The detection method and system carry out fast, accurate, non-contact and high precision measurement on the internal temperature field of an object, can adapt to a harsh environment of high temperature, high pressure and strong corrosivity, and meet the needs of many complicated working conditions.

Provided is a digital DC / DC power module with multi-mode multi-loop control. The digital DC / DC power module with multi-mode multi-loop control is adaptive to complexity, high performance, and high reliability of the application of a current DC / DC power module and is high in integration degree and high in flexibility, and comprises implement contents including structural composition, components and parts, heat dissipation and packaging, a work principle, an automatic voltage-increasing and decreasing topological structure, feedback control, increment PID control, input voltage automatic tracking, multi-loop cooperative control, data communication, a power conversion circuit, and a core control circuit.

The invention discloses a method and a device for virtual keyboard input by the aid of hand signs. The method includes capturing gesture information of static hand signs of a user when the user presses different keys; storing the gesture information of the static hand signs of the user when the user presses the different keys and corresponding key information; capturing gesture information of a real-time hand sign of the user when the user inputs information; matching the gesture information of the real-time hand sign with the gesture information of the static hand signs of the user when the user presses the different keys, and acquiring the gesture information, which is matched with the gesture information of the real-time hand sign, of the certain static hand sign; and determining that the key information corresponding to the matched gesture information of the certain static hand sign is the key information inputted by the user. The method and the device have the advantages that only the gesture information of the hand signs needs to be matched, so that the data volume can be reduced, and the real-time response speed is increased; gesture information of respective habitual static hand signs of different users is recorded in advance, so that the method and the device are adaptable to different habits of the users; and as the gesture information of the static hand signs of each user is fixed, the method and the device are high in accuracy.

This invention discloses a waving method and a device for the rectifier of silicon controlled thyristor including: obtaining waving time scale of thyristors in a rectifier based on the phase and amplitude character of input voltage and trigger angles of the thyristors, presetting said waving time in a comparing unit of the timer, if the time is matched to the timer, then the timer comparison is stopped to change the phase of the thyristor. Said device includes a signal transmitting module sending phase-change operation signals to silicon controlled thyristors of a rectifier, an obtaining module getting waving time of the thyristors based on the phase and amplitude character of input voltage and trigger angle of the thyristor and a timer module locating said signal sending module to send the time scale of the phase-change operation signal based on said waving time scale.

The invention relates to a whole network distributed heat storage and supply system and method and belongs to the field of heat storage and supply systems. The whole network distributed heat storage and supply system is characterized by comprising a heat supply system, a heat storage system, a control system and a management and control platform, wherein the heat supply system is connected to theheat storage system, and the control system is separately connected to the heat supply system, the heat storage system and the management and control platform; the heat storage system includes a heatstorage tank, an electric shut-off valve, an electric regulating valve and a circulating water pump, wherein a cold water end and hot water end of the heat storage tank are separately connected to theheat supply system through the electric shut-off valve, the electric regulating valve and a circulating water pump. The whole network distributed heat storage and supply system and method have the advantages that novel heating systems of heat storage devices are installed on positions such as users' houses, heat exchange stations, pipe networks, renewable energy source areas, thermal power plantsand regional boiler rooms, and through the mode of combining user sides, pipe network sides and heat source sides for heat storage, not only are the needs of heat sources for peak shaving met, but also the advantages of being narrow in adjustment range, closer to the users, higher in flexibility and the like are achieved.

The invention provides a multitask sequence parallel-running method. The multitask sequence parallel-running method comprises the specific following steps that a device is awakened, and a memory and aperipheral are initialized; parameters required for running of all tasks in the device are configured, a microcontroller produces time takt corresponding to each task through a takt timer, all the task generate time slices according to each takt, period tasks are generated according to the time slices, and accordingly a time scheduling period table is established; the microcontroller receives instruction loading sequence data and run the sequence data according to the established time scheduling period table after parsing; normal running of multiple task modules is achieved through sequence data running. By adopting the method, a software / hardware framework is provided for secondary development of a user, a low-cost microprocessor running method is designed, multitask running based on time scheduling is supported to the greatest degree by scheduling multitask running sequence data in an SPI_FLASH memory in a running framework of the microprocessor, and fewer memory and computing resources are occupied.

The invention discloses an alarming device and an alarming method for detecting harmonic waves of a vehicle-mounted converter. A hollow transformer is used for converting a sensed current signal into a voltage signal, and outputting the voltage signal to an isolation unit. The isolation unit is used for performing isolation amplification on the signal, and outputting the processed signal to a filtering unit. The filtering unit is used for performing low-pass filtering processing on the signal, and outputting the signal to an A / D (analogue / digital) sampling unit. The A / D sampling unit is used for performing sampling and A / D conversion on the signal output by the filtering unit, and outputting the converted signal to a digital signal processing unit. The digital signal processing unit is used for performing processing on the converted digital signal to judge whether an interference signal of which the frequency is the same as that of a track relay driving signal representative of a track occupation condition in the digital signal exceeds a threshold value or not, and outputting an alarming signal to a converter master control unit through an alarming output unit. According to the device and the method, the technical problems of low detection accuracy, high false alarm rate, low flexibility and availability and low reliability of the prior art are solved.

The invention discloses an IP-based streaming media playing method and system. The method comprises the following steps of sending a data steam to a streaming media platform through a media server and a multi-thread server according to a communication protocol; performing recognition processing on the format of the data stream, and further storing the data stream; sending and playing the stored data stream according to a session request. The system comprises an input unit, a storing unit and an output unit. By the method and the system, real-time streaming transmission can be realized through configuration, a multi-thread kernel and multiple data stream channels are used for service, mutual communication among networks is effectively realized, the openness is high, the extendibility is good, and the real-time response speed is high, further, multiple kinds of data stream storage are provided, data can be read and written asynchronously, and flexibility of data storage is greatly enhanced. The method and the system can be widely applied to the streaming media field.

The invention discloses an automobile wireless charging alignment method and a device thereof, a storage medium and a terminal. The method comprises the steps that the position and the advancing routeof a transmitting coil are acquired; in the running process of an automobile, a control switch connected with a receiving coil in parallel is controlled to be closed to form current detection loop detection; a coupling detection induction current in the current detection loop is detected at different positions of the automobile relative to the transmitting coil; a coupling coefficient at each position is determined according to the coupling detection induction current at different positions; a target coupling curve and a peak value thereof are determined; and when the obtained coupling coefficient approaches a peak coupling coefficient and the difference between the obtained coupling coefficient and the peak coupling coefficient is smaller than a preset threshold, a parking instruction issent and the control switch is controlled to be switched off. According to the scheme provided by the invention, the wireless charging circuit is multiplexed to realize a detection function, automatic coil alignment is realized on the basis of not additionally adding detection equipment and positioning equipment, manual operation of a user is not needed, the alignment precision is high, and the realization cost is low.

The invention discloses a multipoint displacement simultaneous measuring method, and a measuring system is shown in the figure. A reference point transmitting antenna is installed on the fixing position, and the surface of the measured object is equipped with multiple observation point transmitting antennae; a public radio frequency local oscillator generates a radio frequency carrier signal, a reference point beacon receiver directly transmits the radio frequency carrier signal through the reference point transmitting antenna, an observation point beacon receiver uses a low frequency sine wave signal to perform the double-sideband modulation to the radio frequency carrier signal, and sends it to the observation point transmitting antennae; the frequency of the sine wave modulating signal of each observation point beacon receiver is different; after receiving the mixed signal transmitted by the reference point transmitting antenna and the observation point transmitting antennae, a telemetering receiver uses the other radio frequency local oscillator to convert the frequency of the signal to the intermediate frequency, and digitize it, and then perform the Fourier transform to obtain its magnitude spectrum and phase spectrum, so that the carrier phase difference of each observation point signal and the reference point signal is calculated; and according to the phase difference variation of two times of previous and next measurement, the displacement of each observation point is calculated.

The invention provides a grouping polling method of wireless communication, comprising following steps: S1, dividing an intra-domain terminal into a plurality of groups by a base station, distributing a group ID and an intra-group ID to every terminal; S2, broadcasting a command to one group by the base station in polling, after the intra-group terminal receives the command, positioning own reporting time slot by the intra-group terminal according to the ID number; S3, when the reporting time slot arrives and no other terminal is monitored to start communication, starting the communication by the terminal corresponding to the reporting time slot, wherein other terminals cannot start the communication at this time until the next intra-group polling command arrives. In application of the grouping polling method of the invention, the base station is unnecessary to start polling the terminals one by one; the command polling expenses are reduced, the intra-group terminal positions own reporting time slot according to the ID number; predicable anti-collision time is formed; and the real time response speed of the whole wireless system is improved.