363 results about "Critical position" patented technology

Communication over lossy packet networks such as the Internet is hampered by limited bandwidth and packet loss. The present invention provides a path diversity transmission system for improving the quality of communication over a lossy packet network. The path diversity transmission system explicitly sends different subsets of packets over different paths, thereby enabling the end-to-end application to effectively see an average path behavior. Generally, seeing this average path behavior provides better performance than seeing the behavior of any individual random path. For example, the probability that all of the multiple paths are simultaneously congested is much less than the probability that a single path is congested. The resulting path diversity can provide a number of benefits, including enabling real-time multimedia communication and simplifying system design (e.g., error correction system design). Two exemplary architectures for achieving path diversity are described herein. The first architecture is based on source routing, and the second architecture is based on a relay infrastructure. The second architecture routes traffic through semi-intelligent nodes at strategic locations in the Internet, thereby providing a service of improved reliability while leveraging the infrastructure of the Internet.

The invention discloses a vision guiding AGV (Automatic Guided Vehicle) system and a method of an embedded system. Two cameras fixed on a trolley are used for acquiring guiding path information in real time, wherein the cameras and the ground form a certain angle to be inclined forwards and is used for acquiring prospect images; and the cameras are arranged at the middle part and the front part of the interior of the trolley, are vertical to the ground and are used for secondary exact location. The vision guiding AGV method comprises the following step of: embedding an anti-metal radio frequency mark on the ground surface of a key position, wherein a vehicle-mounted radio frequency card reader obtains information in the mark when the trolley passes through the upper part of the mark. When a laser scanner scans a front obstacle in real time, obstacle avoidance detection and obstacle avoidance are realized. A control box of the embedded system disclosed by the invention is as an inner kernel for image collection, image treatment and policy control, the acquired image is subjected to Gauss high-pass filtering, edge detection and two-step Hough transformation so that position deviation and angle deviation of the trolley relative to a current path can be calculated, and two-dimensional deviation value of the AGV currently corresponding to a location reference point is fed back at a station point.

The present invention provides a novel technique and is particularly useful in medical imaging, although a number of fields may benefit from its application. In one aspect of the technique, a user identifies anomalies or, more generally, features in at least two different comparable images either by computer aided techniques or by manual identification. Once the features are identified they are numbered, sized, and a key location for the feature, such as the middle of an anomaly, may be estimated. Once this location is determined, a location marker is used to perform registration of the images. When comparisons are to be conducted, then, the registration is used to effectively anchor the images with respect to one another to facilitate paging between the images and reduction of eye movement.

A system may place nodes (110) within a non-biconnected network (100) that includes multiple interconnected nodes (110) to achieve biconnectivity within the network (100) and transform the network (100) from a non-biconnected one to a biconnected one. A non-biconnected network is one that necessarily becomes partitioned into two or more disconnected networks if a node in a critical position (termed a “cutvertex” node) should fail or otherwise become unavailable. A biconnected network is one that includes at least one additional network link (sometimes termed an “edge”) between nodes belonging to each of the otherwise potentially disconnected networks for the purpose of maintaining network communication therebetween if and when the cutvertex node fails or otherwise becomes unavailable. To achieve biconnectivity, the system may identify one or more nodes (110) to move and determine the direction and distance to move the one or more nodes (110). The system may then move the one or more nodes (110) in the determined direction and distance to transform the non-biconnected network (100) to a biconnected one.

An economical prescription order tracking system automatically monitors and tracks prescription orders through a conventional pharmacy. The system includes a tracking tag having a unique identifier associated with it secured near the prescription order such that it travels with the order through various locations within the pharmacy. Tag reading devices are positioned at key locations throughout the pharmacy to detect the location of each tag, and its associated attached prescription order. The detected locations are compiled via a computer system and associated with the customer, such that at any given time the location of the prescription order within the pharmacy can be determined, thereby facilitating the efficient operation of the pharmacy. Preferably, filled prescription orders are placed in a large bin having multiple cubbies within it. Each cubby has a displayed number and a tag reading device received therein such that the location of the prescription order within the cubby is easily determined simply by placing the prescription order with tag into an available cubby. The time each prescription order remains at each location and worker identity information at each location can be recorded and compiled to facilitate workflow and worker efficiency monitoring of the pharmacy.

The invention discloses a human face image face key point positioning method. The method includes the steps of marking to form a human face image training set with multiple face key points based on internet data; based on a human face detecting frame detected by a human face detector, aligning human face images, marked with the face key points, in the training set to obtain positions of the face key points of each human face image and average positions of the face key points of all the human face images after aligning; respectively learning distinguishing feature representation of each face key point and representing each face key point as a 10-dimesional feature vector; learning a regression positioning model of the face key points based on partial least squares regression; subjecting the inputted face images to be tested to human face detection and aligning, normalization, face key point position initialization and iterative regression processing to obtain final face key positions and output the final face key positions.

A system and method for providing input to a handheld computing device by provisioning the handheld computing device with a projecting device a projecting device for displaying a graphical representation of a keyboard, the graphical representation including key locations capable of being selected by an object, the graphical image displayed in an area proximate the device; a signal detection system for detecting the presence of an object located at a selected key location within the area; and, a mechanism for determining the selected key in response to detecting an object at a corresponding selected key location and registering the selected key as a keystroke in the computing device.

The present invention is directed to methods of monitoring logic circuits for failures. In particular, the methods are directed toward establishing parallel logic cores where failures are detected by comparing the parallel paths for equivalence at key locations by a redundancy checker. Any mismatch will result in a predetermined failsafe operational mode. In addition, important techniques are applied to periodically exercise individual parallel paths to ensure that logic cores are verified in a way that does not disturb any process being monitored or controlled. This feature is important in some industries, such as the nuclear power industry, where safety critical operations require a high state of reliability on logic circuit blocks which may be infrequently utilized.

The invention discloses a vehicle size measurement method and a device. The vehicle size measurement method comprises scanning a plane vertical to the running direction of a vehicle by a laser radar to measure the width and the height of the vehicle; and scanning a plane parallel to running direction of the vehicle and vertical to the horizontal plane by the laser radar to measure the length of the vehicle. According to the vehicle size measurement method and device provided by the invention, the critical positions in the three dimensions of length, width and height of the vehicle can be measured by the laser radar, and the vehicle size can be calculated by reducing the critical positions on both ends in each dimension. Accordingly, the problem in quickly and accurately measuring the vehicle size is solved, thereby realizing quick and accurate measurement.

The invention relates to a work-state storing and safety protecting system used for a jib crane. The system comprises a lower computer, an upper computer, sensors and a data transmission module. The lower computer comprises an RF identification module, a CPU, a data collecting module, an output control module, a main-control system locking module, a keyboard, a storage, a display, an indicator and a buzzer. The lower computer is arranged in a cab. The upper computer comprises a computer, a control program module and an RF solidifying module. The upper computer is arranged in a ground-based office. The sensors are arranged on the key positions of the jib crane and the signals of these sensors are collected and calculated by the lower computer and then the upper computer communicates with the lower computer through the data transmission module, thus realizing the timely monitoring and data storing to the work state of the jib crane and carrying out safety protection by the judgement on the detection data.

A distributed test system for implementing enhanced BIT (Built-In-Test) within an ESM (Electronic Surveillance Monitoring) or RF receiver system. The distributed test system includes a system processor, a programmable RF source element or other comparable test signal generating arrangement, and switched path coupled elements and various measurement elements, each embedded at strategic locations within the ESM system so as to effect maximum path coverage and test benefit.

The invention discloses a comprehensive foot profile three-dimensional individualized shoe tree model generation method for adjusting global parameter and local cross section. The method is taken in the following steps: 1, a three-dimensional standard shoe tree model and a user foot profile model are read in; 2, the foot profile parameter of the read-in foot profile model in the step 1 is measured and the shoe tree model parameter is calculated according to the foot profile parameter, then the shoe tree model is deformed under the drive of the shoe tree model parameter; 3, position control points are respectively defined for the foot profile model and the shoe tree model formed in the step 2; 4, the foot profile model is aligned with the shoe tree model in accordance with a match position reference point; 5, the section of the key position of the foot profile model is defined; 6, the section got in the step 5 and deform the shoe tree model is analyzed on the basis of the section; 7, the three-dimensional shoe tree model designed well is output. Based on the thought of stepwise refinement, the invention generates the individualized shoe tree model with high matching level according to the foot profile of the user and changes the actuality of rough classification and less comfort in the traditional shoe tree generation method.

A system and method of tracing network flows in an autonomous communications system are described. The Autonomous System may be formed of multiple subgroups depending on size and application. Each subgroup contains multiple, interconnected routers which participate in transporting data flow across the Autonomous System (AS). A Director within the AS has a full and complete vision of the network topology. When it is desired to trace a particular flow because of an identified attack, selected routers in key locations—through which that particular flow travels—mark packets with labels which enable the tracing of the path. These labels permit the source of the attack, at least in so far as it travels through the AS, to be identified. If the number of entry (or key) points to the AS is larger than the number of available labels, the AS will be divided into subgroups, the flow is traced from subgroup to subgroup.

The invention relates to a hot rolling manufacturing management level graphical rolling line material tracking method, which mainly solves the technical problem that a manufacturing manager can not remotely monitor hot rolling line production and equipment status. The method has the technical proposal that the hot rolling manufacturing management level graphical rolling line material tracking method comprises the following steps: a. a rolling line signal tracking step: tracking signal data of the key position from an export of a heating furnace to the end of coiling is collected by a rolling line tracking signal collector, and then is transmitted to a MES by communication software; b. a rolling line signal filtrating step: the received tracking signal is analyzed and treated by a rolling line tracking signal filter, and the efficient tracking signal is stored in a database; c. a rolling line signal monitoring and graphical simulation step: tracking signal change information collected by a rolling line tracking signal monitor is input into a rolling line tracking graphical emulator; a band steel action graph is drawn out in real time at a client of the MES; field actual rolling process is simulated; the position of the band steel and the equipment state of a rolling mill are reflected in real time. The method mainly realizes real time tracking and dynamic mapping a track view on the material position during rolling process on the MES.

The invention provides a fan control method and a fan control device of a server and the server, wherein the server comprises a plurality of feature components and a plurality of fans. The method comprises the following steps: measuring temperature information and power consumption information of the plurality of feature components of the server; obtaining a current work mode of the server according to the temperature information and the power consumption information of the plurality of feature components; obtaining temperature of a plurality of key positions in the server according to the current work mode of the server and the preset temperature prediction model; respectively controlling the plurality of fans according to the temperature of the plurality of key positions. By adopting the method disclosed by the embodiment of the invention, real-time prediction of the temperature of the plurality of key positions is achieved in a numerical simulation manner under the premise of not increasing a physical sensor to the server; the plurality of fans are respectively controlled according to the real-time prediction temperature; the reliability of real-time measurement of temperature of the server is improved; the potential safety hazard in the server is reduced; meanwhile, the fans of the server are accurately controlled, and the waste of power consumption of the fans is avoided.

Quilting Template with a flat, transparent, circular plastic disk approximately one eighth of an inch thick, a centermost conical aperture to allow a pencil point or pin to act as a pivot shaft, a plurality of concentrically and radially disposed cutouts spaced around the center aperture, a plurality of conically shaped apertures placed at strategic locations within the disk, and silk screened or otherwise printed indicators on the disk. A preferred embodiment includes the radial cutouts are approximately one quarter of one inch wide so that the outer arc of the cutout can be used as a retaining wall for guiding a standard hand operated cutting wheel and the inner arc can be used to draw a sew line that is an ideal distance from the edge of the fabric being cut.

The invention discloses a method for sensorless detection of the initial position of a brushless direct current motor. The method for the sensorless detection of the initial position of the brushless direct current motor comprises the steps that positioning is carried out for the first time before the motor is started according to a three-phase six-state pairwise-breakover switch mode, six voltage pulses are applied in the counterclockwise rotation direction, six bus electric current peak values are obtained by sampling direct-current bus peak currents after the six voltage pulses acts for a fixed period of time, the six voltage pulses are divided into three pairs of opposite switch state voltage pulses, three pairs of opposite switch state breakover current difference values are obtained through by infusing the opposite switch state voltage pulses into the corresponding bus electric current peak values and conducting subtraction, then a current threshold delta I of a critical initial position is set according to the current difference values, the position where two pairs of opposite switch state breakover current difference values are lower than the current threshold delta I is a rotor critical initial position, positioning is carried out for the second time when the rotor critical initial position is detected to be a critical position, and the critical initial position is judged by means of vectors of two most-adjacent three-phase six-state ternary-breakover voltages based on the first positioning. The method for the sensorless detection of the initial position of the brushless direct current motor solves the problems that detection can not be achieved accurately when a rotor is located between two 60-degree sectors and is convenient to realize and suitable for low-cost occasions.

A method is disclosed for analyzing with a computer (1) the motion of an athlete (3), of a team or a patient during an activity, said method comprising the steps of defining a number of unevenly time-spaced key positions in said motion, said key positions being of particular interest for analyzing the correct execution of said motion by said athlete (3) or team. A video sequence (11) of said motion is acquired with a camera (2) and still pictures (12) are extracted from said video sequence (11). Templates can trigger the automatic extraction of still pictures (12). For extraction purposes, a metadata recorded with a sensor (5) at the same time as the video sequence (11) can be used. Said still pictures (12) correspond to said previously defined key positions. Thereafter said extracted still pictures (12) are displayed simultaneously on a same display (10).

A method for generating a frequency warping function comprising preparing the training speech of a source and a target speaker; performing frame alignment on the training speech of the speakers; selecting aligned frames from the frame-aligned training speech of the speakers; extracting corresponding sets of formant parameters from the selected aligned frames; and generating a frequency warping function based on the corresponding sets of formant parameters. The step of selecting aligned frames preferably selects a pair of aligned frames in the middle of the same or similar frame-aligned phonemes with the same or similar contexts in the speech of the source speaker and target speaker. The step of generating a frequency warping function preferably uses the various pairs of corresponding formant parameters in the corresponding sets of formant parameters as key positions in a piecewise linear frequency warping function to generate the frequency warping function.

The invention relates to a path determining method and a device, wherein the method comprises the following steps: determining a first key position point which is nearest to a source position point and is pre-saved, and a second key position point which is nearest to a target position point; calculating a first shortest path between the source position point and the first key position point and a second shortest path between the target position point and the second key position point; and obtaining a third shortest path between the first key position point which is pre-saved and the second key position point, and determining a path between the source position point and the target position point according to the first shortest path, the second shortest path and the third shortest path. The adoption of the method and the device can reduce the computation workload, further improve the overall efficiency of computation and improve the user experience.

The invention belongs to the technical field of sleep monitoring, and particularly relates to an intelligent sensing mattress for monitoring sleep. Two kinds of flexible pressure sensors are adopted, wherein the first kind of the pressure sensors are used for producing pressure sensing arrays, are uniformly distributed in the whole mattress, and are used for detecting stressing conditions in the most part of the mattress, the second kind of sensors are distributed in several key positions of the mattress, and are used for collecting signals which can cause pressure change like respiration signals, body movement signals, and heart rhythm signals of a user, and transferring the pressure changing signals into electric signals; follow-up hardware conducts amplification, smoothing and transmission on the obtained electric signals, then conducts feature extraction and pattern recognition processing on the signals through a PC end to obtain a pressure distribution image and sleep analysis. According to the intelligent sensing mattress for monitoring sleep, ultra-thin flexible materials are used in sensors and structures thereof like electrodes, thus the mattress is small in thickness, light in weight, and convenient to carry; due to the fact that the intelligent sensing mattress for monitoring sleep is run in a non-intrusive mode, sleep monitoring can be conducted under the condition that a user is unconscious, thus the natural sleep of the user can be fully restored, and thus powerful supplement is made for family-type nursing.

The invention discloses a civil aircraft air-conditioning system online health monitoring data acquisition and analysis method, and is applied to real-time monitoring and early monitoring and early warning of failure of a large civil aircraft air-conditioning system. As for online health monitoring of the modern large civil aircraft air-conditioning system, firstly the health baseline model of the air-conditioning system is established by using the air-conditioning system monitoring parameters under the failure-free condition and the baseline model mining technology; then the deviation value of the monitoring parameters of the key position is determined to act as the monitoring object, and the baseline value is subtracted from the actual observation value of the monitoring parameters of the air-conditioning system so that the deviation value sequence of the monitoring parameters is obtained; and then the deviation value sequence is monitored and early warning of the failure of the air-conditioning system is emitted according to the abnormal deviation value sequence. The problems that the direct monitoring performance parameters of the civil aircraft air-conditioning system have high discrete degree and the early failure characteristics are not obvious can be solved, and early warning can be timely emitted at the early stage of the system failure by monitoring the deviation value sequence so that the real-time monitoring requirement of the large civil aircraft air-conditioning system can be met.

The invention relates to an air power collecting and discharging type precision seed sowing device, which is characterized by comprising a shell, a sealing cover plate, a seed sowing roller, a pressure relief wheel, a seed bed screen, a seed cleaning shifting finger, a seed guiding pipe, an impurity collecting plate and a seed stopping plate, wherein the shell is connected with the sealing cover plate by virtue of bolts, the seed sowing roller is arranged in the shell to form an operation air chamber, an air supply chamber and a seed chamber, the seed chamber is internally provided with an air supply pipe, the seed bed screen is arranged at a critical position of the air supply chamber and the operation air chamber, and the air supply chamber provides air flow for the operation air chamber by virtue of the seed bed screen and the air supply pipe; the seed cleaning shifting finger is arranged in the operation air chamber, is close to the roller in a gap and is in an L shape, a shorter side of the seed cleaning shifting finger is in a right trapezoid shape, and relative position between a bevelled edge of the trapezoid and a seed attaching hole can be adjusted by virtue of a seed cleaning shaft fixedly connected with the shorter side; the pressure relief wheel is arranged inside the seed sowing roller and is close to the interior of the roller by virtue of a tension spring; and the inlet of the seed guiding pipe is close to the roller in the gap and is dead against a contact point of the pressure relief wheel and the roller. The precision seed sowing device realizes centralized precision seed sowing, seed attaching pressure difference and a seed sending air flow are provided by virtue of a positive pressure system, a seed layer is disturbed by utilizing the air flow, and seed filling probability is improved. The precision seed sowing device is applicable to precision seed sowing of large-row-spacing crops such as corn and soybean.

The invention discloses a method for optimized arrangement of a strain sensor. The method comprises the following steps of building a simplified bridge model, confirming a monitoring cross section needing to be provided with the strain sensor, building a structural multi-scale finite element model on a bridge section including the monitoring cross section, obtaining the position which is located on the monitoring cross section, is stressed adversely and needs to be provided with the strain sensor, building a mesoscopic model of a local detail of a critical element on the monitoring cross section, carrying out hot spot stress analysis, and confirming the spot distribution position of the local detail. By the help of a multi-scale finite element modeling strategy, the method provides an optimized scheme of the strain sensor in a health monitoring system of a bridge, especially a long-span bridge by different levels, can obtain the comprehensive information of structural critical positions with few strain sensors, and is both safe and economical.

The invention relates to a construction monitoring system for a cast-in-site bridge supporting system based on BIM. The construction monitoring system comprises front end monitoring modules, a cloud database, a BIM construction management platform and a terminal user, wherein a plurality of front end monitoring modules are arranged on key position points of the supporting system and transmit information, monitored in real time, about pressure, stress and the like of the supporting system to the cloud database according to a wireless transmission technique; the cloud database analyzes and processes the received data information for the BIM construction management platform to automatically read; the BIM construction management platform analyzes and processes the data of the pressure, the stress and the like of a front end, namely a construction site supporting system and transmits the processed data to the terminal user. The construction monitoring system disclosed by the invention has the characteristics of real-time safe monitoring, automatic early warning report, accurate emergency disposal measures and the like, can realize three-dimensional and picture and text integrated intelligent management for structure quality of an engineering project and monitors the change of site monitoring points in real time anytime and anywhere; the construction monitoring system also has the advantages of simple and visual operation, labor conservation, and high popularization and application value.