1089 results about "Contact network" patented technology

The invention provides a contact network three-dimensional reconstruction method based on SIFT and LBP point cloud registration. The method comprises the first step of obtaining initial three-dimensional point cloud data of the environment where parts of a contact network to be reconstructed are located through motion-sensing peripheral Kinect for Windows, and conducting denoising, simplifying, partitioning clustering, fusing and other preprocessing operations on the initial three-dimensional point cloud data to obtain single-view-angle point cloud data of the parts of the contact network to be reconstructed, the second step of extracting key points through an SIFT algorithm, constructing description vectors of the key points by means of LBP features of uniform patterns and determining the corresponding relations between the key points in different point clouds according to the distances between the vectors, the third step of completing point cloud registration through a rough registration method and an ICP fine registration method and obtaining the complete three-dimensional point cloud data of the parts of the contact network to be reconstructed, and the fourth step of completing three-dimensional reconstruction through the Poisson surface reconstruction method and obtaining a three-dimensional model. According to the method, the key factor is point cloud registration which is the key step influencing the three-dimensional reconstruction speed; the description vectors of the key points are constructed by means of the LBP features of the uniform patterns, so that vector dimensions are reduced, the matching speed of the corresponding relations is increased, registration is accelerated, and the three-dimensional reconstruction speed is increased.

The method and system hereof is for a computer-aided personal contact and marketing system that operates to provide a collaborative personal contact network whereby individuals can participate and which allows businesses and organizations to communicate with select individuals within the network thereby optimizing their marekting efforts. Preferably, the method and system utilizes at least one Internet web-site having a plurality of web-pages providing an interactive, menu and event driven system that cooperates with a system server for using prompt, dialog, and entry windows to guide a user to enter and/or obtain information.

An apparatus for modeling a contact network may include a processor. The processor may be configured to store a plurality of contacts lists, which collectively comprise a contact network. Each contacts list may be comprised of a plurality of contact entries and may be associated with a user of a remote device. The processor may further be configured to model the contact network using one or more modeling parameters. The processor may be configured to generate a plurality of suggested contact entries for a user based at least in part upon the one or more modeling parameters used to model the contact network. The suggested contact entries may be extracted from contact entries stored in the contacts network. Corresponding methods, systems, and computer program products are also provided.

The invention relates to an automatic-moving-type electric vehicle power supply system and a power supply method thereof. The power supply system comprises a network control center, a rail-type contact network power supply system, a rail-type moving power supply vehicle and a power supply control terminal. A power grid power supply is introduced through the rail-type contact network power supply system, and accordingly the rail-type moving power supply vehicle is driven to move along a rail automatically. The power supply control terminal on an electric vehicle applies for power supply service to the network control center, the network control center controls the rail-type moving power supply vehicle to move to the position where the electric vehicle is located, and the rail-type moving power supply vehicle monitors running parameters of the electric vehicle through the power supply control terminal and charges the electric vehicle in the running process of the electric vehicle. The system can meet power supply requirements of the electric vehicle running for a long distance, and the electric vehicle does not need to stop for charging and can be charged during running. The problems that charging places of charging piles of existing electric vehicles are fixed, the electric vehicles cannot move during charging and waiting time is long are solved.

A referral and recruitment system hosted on a webserver for recruitment, fundraising or advocacy campaigns. Users on the Internet with browsers are able to log-on as clients to post and refer charitable donations or job opportunities, for example. At the heart of the server is an incentive engine that tracks job openings by their ID, incentive type, and the value of the incentive. Incentives can be structured as cash bonuses, days off, contest points, etc. Combinations of incentives can be tailored to suit particular persons or groups. Users can post new jobs, make direct referrals to collect the entire hiring incentive, or pass along the information to their private contacts to share later in the incentives. The communication between these people is based on email and their respective email contact lists. The system tracks who-knows-who, and who-referred-who to who. The hierarchy of relationships can then be used to dictate how the incentive bonuses and payments are distributed amongst the successful referring parties. Employment opportunities can be broadcast to recruiting organizations. Each time an employee, friend, recruit or associate sets up a message campaign, or responds to a message, they do so from their own personalized account using their email address for user identification.

The computer implemented method and system disclosed herein enables online networking based on exchange of virtual electronic cards between a plurality of users. An online networking environment is provided to a user. The user creates a personal profile in the online networking environment. Further, the user may create a company profile or link with an existing company profile. A virtual electronic card of the user is automatically created in the online networking environment. The virtual electronic card is one of a personal electronic card and a company electronic card. A personal contact network of the user is established in the online networking environment by exchanging personal electronic cards between the user and the plurality of users. Further, a company contact network of the company of the user is established by exchanging company electronic cards between the company of the user and a plurality of companies.

The invention discloses an electrical locomotive auto-passing neutral section control system. In the control system, a signal generator used for transmitting passing neutral section anticipating signal is arranged on a vehicle mainframe of an electrical locomotive, wherein the vehicle mainframe comprises a signal receiver used for receiving the passing neutral section anticipating signal, a memory unit used for storing the required time of locomotive neutral section operation, a clock, a speed sensor used for providing the current speed of the electrical locomotive for a controller, the controller used for outputting passing neutral section control signal and restoring the control signal and a contact network connection controller used for controlling a contact network electrical connection device. The timing that the invention executes the auto-passing neutral section operation is accurate and the reliability of the auto-passing neutral section control is high.

The invention discloses a power supply system for an electric locomotive. The power supply system comprises an external power supply, a traction invertor, an auxiliary invertor and a charger, wherein the charger comprises a first three-phase bridge-type inversion circuit; the alternating current side of the first three-phase bridge-type inversion circuit is connected with the low voltage side of a first three-phase transformer and the direct current side of the first three-phase bridge-type inversion circuit is connected with a storage battery; and the high voltage side of the first three-phase transformer is coupled to the output end of the auxiliary invertor. The power supply system for the electric locomotive can supply power to a traction motor by using the storage battery when a contact network fails; and low speed running of the electric locomotive can be retained.

The invention discloses a contact network failure detection and diagnosis method based on an unmanned aerial vehicle, which comprises the following steps: (1) image acquisition: carrying a video camera to shoot along a contact network by an unmanned aerial vehicle so as to respectively acquire contact network images under visible light and infrared light; (2) image graying; (3) image enhancement; (4) image segmentation; (5) image dissection; (6) image fusion: fusing Laplacian pyramid layers under visible light with corresponding Laplacian pyramid layers under infrared light, and carrying out image reconstruction on the fused Laplacian pyramid to obtain a contact network component image after the visible light image and the infrared light image are fused; and (7) carrying out image identification and failure judgment by a BP (back-propagation) neural network. The method can be used for effectively acquiring a contact network image in the operation process of a locomotive in a multidirectional multiangular real-time mode, automatically identifying the contact network component in the image, and judging whether the contact network fails and the type of the failure; and the judgment result is more accurate and reliable, and can better ensure the safety of railway transportation.

The invention provides a power supply device and a power supply system of a hybrid railway vehicle, and a railway vehicle, wherein the power supply device comprises a super capacitor and a storage battery bank; the super capacitor is connected in parallel with the storage battery bank; and the super capacitor and the storage battery bank are connected to the power supply system in the vehicle, respectively, thereby providing a power supply voltage source for the power supply system in the vehicle in a state that a contact network is separated from the power supply system of the vehicle. The power supply device is characterized in that the characteristics of the super capacitor and the storage battery bank are combined and the super capacitor and the storage battery bank are connected in parallel, so that the electric energy output by the super capacitor and the storage battery bank serves as the power supply voltage source for the power supply system together when the contact network is separated from the power supply system or the contact network has a power failure; and the electric energy needed for driving the vehicle to run can be conterminously output for a long time and power supply to the traction motor of the vehicle through the power supply system for a long time can be realized; and therefore, safe running of the vehicle is guaranteed.

The invention provides a method and a system of sharing a contact network based on a two-dimensional code. The method of sharing the contact network based on the two-dimensional code comprises the steps of obtaining a request transmitted by a user after scanning the two-dimensional code to apply to join in a two-dimensional code friend circle corresponding to the two-dimensional code, verifying the identity of the user according to the request of applying to join in the two-dimensional code friend circle corresponding to the two-dimensional code, and if the verification is passed, displaying information of the two-dimensional code friend circle corresponding to the two-dimensional code and information of members in the two-dimensional code friend circle on a client of the user. The method and the system has the benefits that the user can join in the circle by scanning the two-dimensional code, information of all participants is checked quickly, an organizer is not required to maintain user information manually, and after the user modifies the information, a server updates the new information to the client of each member in the circle. With the adoption of a session negotiation mechanism, the user initiates a code scanning request to the server through the client, and the server verifies the identity of the user.

The invention relates to a contact network key position dynamic offset detection method and a device thereof. A detection identification is arranged on objects at the key position of the contact network to be detected such as contact line of the section, carrier cable, dropper and upright of the detected contact network, an online CCD detection device is arranged on the upright of the contact network, a CCD camera acquires video image of the contact network, the detected displacement and quantity of motion are stored and amplitude, angle of twist and corresponding time course curve are drawn, and the online CCD detection device transmits the data to an upper machine room data center by virtue of a wireless communication module. The method and device of the invention are non contact and self-calibration, practicability is strong, and synchronous monitoring is carried out, so as to obtain data and image; amplitude, frequency, angle of twist and corresponding time course curve are recorded in real time and are used for analyzing influence of the stability of the contact network in high wind environment or under the action of other factors, and travelling is guided according to the real-time deviation state of the contact network.

The invention provides a contact network geometrical parameter detection method and device. The contact network geometrical parameter detection method comprises the steps of obtaining one-dimensional contact network images shot by at least two line-scan cameras fixed on the top of a vehicle, carrying out grey processing on the one-dimensional contact network images to generate a grey value and pixel coordinate relation diagram, determining the imaging position of contact lines of a contact network in the images according to the grey value and pixel coordinate relation diagram, determining the imaging angle of each contact line in the corresponding camera according to the imaging position of the contact line, and determining the geometrical parameters of the contact network according to the imaging angles and the position data of the line-scan cameras relative to the top of the vehicle. Geometrical parameter detection is carried out by utilization of the images collected by the line-scan cameras, the line-scan speed is high, a detection result is accurate, detection efficiency is high, the time for maintaining a skylight is not occupied, a reliable technical means is provided for measurement and evaluation of dynamic and static geometrical parameters of the contact network, and the working efficiency for checking and maintaining a power supply unit is improved.

The invention discloses a method for distinguishing the fault type and direction of a high-speed electrified railway AT (auto-transformer) contact network. The method can ensure the data synchronization of each ranging device on the same power supply arm without depending on the GPS (global positioning system) time synchronization and can judge the fault type and direction based on effective values of T-line and F-line current values without calculating current angles. The distinguishing method is simple and practical, can make accurate judgment on the fault type and the fault direction to enable the conditions of fault points to be more detailed, can effectively shorten the fault removal time for railway power supply maintenance department and is essential to restore power supply in real time. The method provided by the invention is bound to create favorable economic benefit under the background of increasing high-speed rail mileage.

The invention discloses an energy feedback type traction power supply device with a reactive compensation function and a control method thereof. The device comprises a dual-split transformer, two high-power bidirectional converters, a direct-current filter inductor and a central control unit, wherein each vice-side winding of the dual-split transformer is connected with one high-power bidirectional converter; direct-current output sides of the two high-power bidirectional converters are connected in series, and the direct-current filter inductor is connected in series between a direct-current positive output and a direct-current contact network of the first high-power bidirectional converter; and the central control unit is connected mutually with the two high-power bidirectional converters through a controller area network (CAN). In the control method, the hierarchical control is adopted, the central control unit is used for calculating an active current instruction and a reactive current instruction, and the two high-power bidirectional converters perform closed loop control on alternating current of the two high-power bidirectional converters according to the active current instruction and the reactive current instruction. The device not only can meet the requirements of traction power supply and braking energy feedback of subway trains, but also has a reactive compensation function used for improving power factors at incoming wires of master substations.

The invention relates to a non-contact monitoring defect identification method for a contact network, which comprises the following steps of acquiring information data of videos, images and audios through a sensing terminal, caching and transmitting the information data in real time through a communication network. By adopting a distributed big data service cluster built based on GPU hardware equipment or a cloud data processing center, the information data is received and stored in a distributed file system, a training set of the information data is established, and distributed calling and parallel computing are carried out on the information data based on a deep learning technology to realize real-time monitoring and fault analysis on the contact network operation information data. Themethod is used as a technical means for monitoring and detecting a non-contact overhead line system; real-time analysis and diagnosis of non-contact video and image monitoring detection of the overhead line system can be realized, a manual intervention mode is avoided, the accuracy of analysis and diagnosis is improved, and the labor cost is reduced, so that digital, intelligent and intelligent revolution of monitoring detection of the high-speed railway overhead line system is realized.

The invention discloses a method for determining strut positions of a contact network of a special railway line for passenger traffic, solving the problem of low accuracy in the prior art for surveying and lofting the strut positions of the contact network. The method comprises the following steps of: obtaining the coordinates of all CPIII points to serve as survey datum for railway line and related line parameters under a coordinate system of a foundation pile control network CPIII; when a central point C of the railway line is located in a linear, smooth curved and round curved railway lines, respectively calculating the coordinates of the central point C of the railway line; and lofting the coordinates, measuring a distance between the point C to a strut P to serve as a strut side face limit value by using a steel measure tape on a CP linear direction vertical to a railway central line, so as to determine the specific position of the strut P, wherein a rail surface elevation H, calculated in the second step, of the central point C of the railway line is taken as a reference in survey and lofting. By adopting a CPIII coordinate measurement construction method, the advantages of greatly accelerating measurement speed, improving measurement precision and saving cost are achieved.

The invention relates to an identifying method for the line breaking and ground faults of an AT power supply contact network of an electrified railway which comprises: judging and identifying whether an element achieves the starting condition or not; calculating a real time power factor according to a bus voltage and a feeder line current; calculating the self-adapting control amount and the secondary harmonic content according to the harmonics 1. 2, 3, 5 and 7 of the feeder line current; judging whether the power factor regulated by the self-adapting control amount and the self-adapting control amount are in the motion range or not and judging whether the secondary harmonic content is smaller than a setting value or not; if yes, all the conditions can be met; then giving out alarming signal or tripping, uploading the failure data information; or quitting and initializing the identifying element. The identifying method can identify the high impedance failure formed by line breaking and grounding and ensure the identifying element for the feeder line protection device of a microcomputer to be not mistakenly moved when various electric power engines run under load, under the temporary state of exciting surges and under the working condition of heavy load; simultaneously, the identifying method solves the problem of failure to operate of the normal protections after the stepout of the AT (autotransformer).

The station-charging trolleybus system for city public traffic includes trolleybus, contact network, double-wire current collecting pantograph, station ground road mark, sensing source and current collecting switch device. The connection mode includes setting the double-wire current collecting pantograph in the top of the trolleybus, contacting the double-wire current collecting pantograph to the contact network in the charging station, setting the current collecting switch device inside the trolleybus, and embedding passive metal parts on the ground of station entrance as the sensing source corresponding to the suspended section of the network access. The present invention has reasonable system constitution, network-free running of the trolleybus, low cost of the trolleybus and attached equipment, safe and reliable operation and simple implementation.

The invention relates to a catenary dropper defect detection model training method and a defect detection method, and belongs to the technical field of catenary fault detection. According to the invention, a contact network dropper defect detection model based on two layers of convolutional neural networks is constructed to extract the image features of a catenary dropper, and the defects of the dropper are classified, by utilizing the advantages of a convolution algorithm, the method is not interfered by the objective conditions, such as the geometrical shapes, the shielding of the dropper, etc., in the image, and compared with a traditional detection mode using manual image watching, the robustness and the efficiency are higher. Meanwhile, on the basis of the characteristics of the dropper, the initial anchor is set by using a clustering algorithm, so that the image detection efficiency and accuracy are improved; in addition, during the defect detection, a corresponding threshold value is set for the output of each layer of model, so that the accuracy of the final dropper defect detection is improved.

The embodiment of the invention discloses a method and device for controlling power supply of double energy sources. The method comprises the steps of: judging a power supply mode selected by a locomotive currently based on a locomotive state; when a contact network power supply mode is selected, controlling break-over of a power supply loop of a contact network at the absence of a fault which results in power supply switch-on prohibition of the contact network; and when a power storage battery power supply mode is selected, controlling break-over of a power supply loop of a power storage battery at the absence of a fault which results in power supply switch-on prohibition of the power storage battery. Through the method disclosed by the invention, the locomotive can select a suitable power supply mode based on the practical condition, and can work normally by switching to the power storage battery power supply mode when no contact network exists so as to enhance application adaptability of an electric locomotive.

The invention discloses a detection method for a bad state of a rotating double-lug component pin of a high-speed rail contact network on the basis of image invariance target positioning. The detection method includes the following steps that a clear and complete rotating double-lug template is selected, by using an SIFT algorithm, feature points of the double-lug template and a target image are extracted and matched, an improved RANSAC algorithm is used for eliminating mismatching to obtain an affine transformation matrix, and a rotating double-lug part is positioned; Hough transformation is adopted for extracting the inclination angle of a double-lug sleeve in the target image, the double-lug sleeve is rotated to the horizontal direction, and then the rotating double-lug part is partitioned; pixel gray level values in the vertical direction of the target image are accumulated to determine the length of the stress part and the lengths of non-stress parts at the two ends of the pin; the range of related specific values among the lengths when the pin works normally and has a fault is concluded, so that the working state of the pin is judged.