44results about How to "Easy system maintenance" patented technology

The invention provides a method for realizing fast and automatic modeling of a transformer substation IEC 61850 by adopting XML information recombination, which is applied to IED modeling of space layers in a digital transformer substation and a traditional transformer substation by adopting IEC 61850 communication. The method comprises the following steps of: recombining the IED information by adopting XML, and providing an IED information standardization interface; editing and setting the standardized XML files; loading an embedded minimum model which accords to the IEC61850 standard; appointing an sAddr information format in advance, automatically adding sAddr information and leading out an ICD model file; analyzing the led-out ICD model file by the IED, and automatically extracting the sAddr information, and automatically mapping model leafage nodes to a real-time database according to the sAddr information; and enabling the information of the real-time database to normally communicate with station control layer equipment by the IED through adopting an IEC61850 protocol. The model collocation can be set by engineering personnel according to actual engineering. Therefore, the invention greatly shortens the time for generating the IEC61850 model, improves the efficiency of production and regulation and is convenient for 61850 engineered actualization and generalization.

The invention belongs to the field of machine vision and intelligent control for achieving fast self-adaptation of traffic video monitoring target detection. The method comprises the steps of building an initial training sample bank; training an AdaBoost classifier based on Haar characteristics and a support vector machine (SVM) classifier based on histograms of oriented gradients (HOG) characteristics respectively; and detecting monitoring images frame by frame by employing of the two classifiers, wherein the detection process is divided into steps of predicting of sub-images in a detection frame through the two classifiers respectively, performing of confidence-degree determination on predicted results, adding of prediction labels corresponding to large confidence-degree and the sub-images into additional training sample banks of the classifiers corresponding to small confidence-degree till the size of the detection frame reaches half the sizes of detected images, retraining of the two classifiers by using the updated training sample banks and detecting of a next frame of image till all images are detected, and the final classifiers can be used for detecting targets of vehicles, pedestrians and the like in actual traffic scenes.

The invention provides a band steel stretch-bending straightening system with capable of controlling the elongation rate and a control method thereof, wherein the band steel stretch-bending straightening system comprises an unreeling inlet roller, a stretch-bending straightener, a reeling outlet roller, a first motor and a second motor, wherein the first motor and the second motor respectively drive the inlet roller and the outlet roller. The band steel stretch-bending straightening system is characterized by also comprising a band steel inlet, an outlet speed measuring device, a first speed regulator, a second speed regulator and an elongation rate computing control device. The band steel stretch-bending straightening system capable of controlling the elongation rate and the automatic control method of the elongation rate of the band steel can realize the closed-loop control to the elongation rate of the band steel in the stretch-bending, straightening and producing processes of the band steel, have the advantages of high automation degree, simple, convenient and rapid operation, high stability and high precision and greatly improve the leveling production of the band steel and the quality of a processing product of the band steel.

The invention provides a multi-model-based high speed train suspension system multi-actuator fault detection and isolation method. The method involves a first bullet train, a trailer and a second bullet train and comprises the following steps that (1) a suspension system, of a two-bullet-train and one-trailer structure, of a train is modeled to obtain a suspension system model; (2) a fault model is built for each actuator of the suspension system of the two-bullet-train and one-trailer structure; (3) a sliding-mode observer matched with each fault model is arranged based on the corresponding fault model, and the corresponding residual quantity is generated; (4) a fault warning threshold value is generated according to the train operating environment and suspension system working conditions, and a logic controller is used for decision making for all residual quantities to judge whether an alarm needs to be given out or not and point out the fault occurrence position. The application of the fault detection and isolation technology is the effective way for improving the system reliability, and an alarm is given in time when a fault occurs, particularly, the fault occurrence position is pointed out when the multiple actuators break down, and fault screening and system maintenance are facilitated.

The invention provides an electrified railway through-type traction power supply system, and belongs to the technical field of railway traction power supply systems. The traction power supply system is characterized in that the output end of a connection transformer CT is connected with an alternating current side of a three-phase MMC rectifier through a filter inductance Ls, and a direct currentside DC is connected with a direct current bus; the input end of a single-phase MMC inverter is connected with the direct current bus, the output side is connected with a single-phase step-down transformer SDT primary winding, and single-phase alternating current, with output voltage of 27.5 kV, of the secondary side of the single-phase step-down transformer is connected into a railway traction network to supply power to trains. The alternating current side of a AC-DC transformer of wind power generation WP is connected with the output of a fan, the direct current output side is connected thedirect current bus, one side of a DC-DC converter of photovoltaic power generation PV is connected with the output of a photovoltaic panel, the other side of the DC-DC converter of the photovoltaic power generation PV is connected with the direct current bus; and one side of a DC-DC converter of an energy storage system NS is connected with a hybrid energy storage system formed by a storage battery and a super capacitor, and the other side of the DC-DC converter of the energy storage system NS is connected with the direct current bus.

According to the invention, random wire pins are used as contacts. A group of random wire pin and accessories are arranged on an insulation mounting plate to form a fuzz button inter-board electric connector. The fuzz button inter-board electric connector is in face contact with printed circuit boards. The insertion force is zero. The fuzz button inter-board connector is arranged between upper and lower printed circuit boards, and the printed circuit boards are vertically connected. By superimposing metal pins, pads of the printed circuit boards and wires are in connection without solder pressure and insertion force. The application range of the fuzz button inter-board electric connector is extended. The fuzz button inter-board electric connector can realize a variety of flexible and reliable interconnection solutions, can be used to connect almost all metal surfaces and metal surfaces and wires, can realize flat and compact internal interconnection of the printed circuit boards, can meet extreme environmental conditions of high reliability, high-speed signal, small space and high density, and is an ideal interconnection solution.

The invention relates to an RFID interface controller used in a machining flow line of the discrete manufacturing industry. The RFID interface controller has a hardware middleware function between upper computer software and an RFID reader-writer. The RFID interface controller is characterized by comprising an RFID reader-writer interface for power supply and communication from the controller to the external reader-writer; a human-machine interaction terminal interface for the power supply and the communication from the controller to the an external terminal; a field bus interface for the communication between the controller and the upper computer; an extended memory for power-down storage of controller setup parameters; a processor capable of realizing the functions of driving various communication interfaces, protocol encapsulation, analysis and conversion, as well as task scheduling and coordination; and a power supply and a protection circuit which are used for providing reliable power supply for the processor, the communication interfaces and peripheral equipment. The invention relates to application of the RFID technology to the machining flow line for real-time monitoring and allocation scheduling of material data and operation information, and provides a means for realizing high-efficiency production and informatized management.

The invention relates to a deep integration and interconnection method for a rail traffic system. The method combines the characteristics of an automatic comprehensive monitoring system of an urban rail traffic system in China, and adopts a deep integration and interconnection mode suitable for subways and light rails to contribute to real-time centralized monitoring for electromechanical devices and coordinating linkage among various systems. The method is characterized in that a station level local network of the comprehensive monitoring system is established, and a plurality of control layer devices positioned in upper and lower computer structures directly access the station level local network of the comprehensive monitoring system; therefore, inter-station communication function and remote access, downloading and maintenance functions between the control layer devices can be realized through the station level local network of the comprehensive monitoring system, which cannot be realized in the prior top end information integration mode.

The invention relates to an energy storage system and a method and a device for controlling power balance of the energy storage system. The energy storage system comprises p battery modules and n energy storage current transformer modules. M battery clusters are formed by the p battery modules, the m is larger than or equal to 2, the n is larger than or equal to the m, and at least one battery module is arranged in each battery cluster. The method includes acquiring power ratios of the various battery clusters; computing given power of the corresponding energy storage current transformer modules according to total given power and the power ratios of the various battery clusters so as to control the power balance. The energy storage system, the method and the device have the advantages that the various battery clusters can work without interfering with one another, only current transformer equipment of a certain battery cluster needs to be shut down on the assumption that batteries of the certain battery cluster are damaged, the other battery clusters still can normally work, great change of working of systems can be prevented, and the fault tolerance and the operation stability of the systems can be enhanced; the stability and the fault tolerance of the systems can be improved by the energy storage system, and influence of damage of the single batteries on the integral systems can be lowered to a great extent.

The invention discloses a traffic safety early warning method and system based on a mobile internet. The traffic safety early warning method comprises the steps that S1, user location information is collected; S2, a relative distance between users is calculated; S3, whether the relative distance is smaller than a safety distance or not is determined; S4, a safety early warning is issued to the user at the relative distance which is smaller than the safety distance; S5, whether the relative distance is smaller than a danger distance or not is determined; and S6, a danger early warning is issuedto the user at the relative distance which is smaller than the danger distance. The method and system reduce the collision between pedestrians and vehicles through the early warning to the pedestrians and the vehicles, and reduce the collision between the vehicles at the same time through the early warning to the vehicles; and the distance early warning between the pedestrians and the vehicles aswell as the distance early warning between the vehicles are performed by using the location information uploaded by the pedestrians and the vehicles, compared with a vehicle distance early warning based on a vehicle-borne radar, the cost is low, the update is fast, the release range is wide, the system is unified in operation and maintenance, and popularization and system maintenance are facilitated.

The invention relates to a projected image geometric distortion automatic correction system and a correction method thereof. The hardware part of the system comprises an offer measurement and control computer, a projector, an angle detection system, an image fusion computer and an imaging computer; the software part is geometric distortion automatic correction software; the software comprises a digital camera image acquisition and processing unit, a cloud platform control unit, a projector setting module and a projector correction processing unit; through cooperative work of the geometric distortion automatic correction software and hardware, the projected image geometric distortion automatic correction can be realized, and the technical difficulties of poor overall picture effect after the manual image correction and long adjustment time are solved.

The invention discloses a fuzzy button made by random winding and filling of metal wires. The random winding is better for transmission of high-frequency signals, the size is smaller, contact is more reliable, the randomly wound wires are suitable for connecting any metal surface (pad) to a pad, and no welding or crimping is required. The fuzzy button has the advantages that high signal transmission rate allows signal frequency to be higher than 20 GHz; compressed interconnection needs no welding or crimping; with low mounting speed, the fuzzy button is applicable to an LGA (land grid array) integrated circuit socket and to perpendicular interconnection between PCBs (printed circuit boards); the problems in PCB via-holes and surface mount welding are solved; weld-connecting is avoided, and mounting, upgrading and system maintenance are facilitated; connections range from 1 to 7000; the fuzzy button is available for contact spacing as low as 1mm or higher.

The invention provides a satellite anomaly detection method based on an improved Gaussian process regression model. The method comprises the steps of determining a prediction variable according to thecorrelation distance from a response variable and the change of the correlation distance before and after abnormality, then establishing a GPR model, calculating posterior distribution of a responsevariable set corresponding to the prediction variable, determining a prediction range according to generalization errors of the model, and judging whether abnormality occurs or not according to the prediction range.

The invention relates to a fuzz button interboard radio frequency connector. The fuzz button interboard radio frequency connector utilizes intertwined-wire insertion pins as contact elements; at least one group of intertwined-wire insertion pins which are arranged in the coaxial mode are arranged on an insulation installing plate; each group of intertwined-wire insertion pins in the coaxial mode can complete transmission of one path of radiofrequency signals; and a plurality of groups of intertwined-wire insertion pins can transmit multi-path of radiofrequency signals at the same time. The fuzz button interboard radio frequency connector can be used for connecting any metal surface (pad) to a pad, especially vertical connection of the radio frequency signals between a board and a board, and can be an ideal interconnection solution scheme, and can work under the working conditions, such as high reliability, high speed signal, small space, high density and extreme environment.

The invention provides a railway disaster-preventing foreign body invasion-limiting monitoring system, comprising a monitoring point grid apparatus, a foreign body invasion-limiting monitoring subunit and a monitoring host unit, wherein the monitoring point grid apparatus is connected with the foreign body invasion-limiting monitoring subunit through a signal transmission channel; the foreign body invasion-limiting monitoring subunit is connected with the monitoring host unit through a data transmission network; and the foreign body invasion-limiting monitoring subunit comprises a grid module connected with the monitoring point grid apparatus through the signal transmission channel, and a monitoring module for acquiring a detection signal in the signal transmission channel. The monitoring module judges the states of the signal transmission channel, the grid module and the monitoring point grid apparatus by acquiring the voltage amplitude and the alternating current frequency of each alternating-current signal between the grid module and the monitoring point grid apparatus, and analyses a foreign body invasion-limiting result; as a result, the influence of self equipment faults on the foreign body invasion-limiting result is eliminated; and the reliability and the usability of the system are improved.

The invention discloses a signaling procedure model identification method and an abnormal signaling procedure identification method, which are used for abstracting a signaling procedure model used for identifying procedures according to signaling procedures specified by a 3GPP. The signaling procedure model identification method comprises the steps of performing identification and definition on key signaling after the signaling procedures are abstracted, then establishing the signaling procedure model, and identifying signaling by means of the signaling procedure model. The abnormal signaling procedure identification method comprises the steps of identifying an abnormal procedure and extracting abnormal information. According to the signaling procedure model identification method and the abnormal signaling procedure identification method, the signaling procedures between network elements are identified, and then the abnormal procedure is extracted based on this, thereby greatly improving the signaling analysis, auxiliary positioning and problem solving capabilities of a system.

The invention discloses a photovoltaic assembly with an MPPT (Maximum Power Point Tracking) module, which comprises a photovoltaic battery pack and an MPPT controller, wherein the MPPT controller comprises an A/D conversion module, an A/D control module, an MPPT module, a PWM (Pulse-Width Modulation) module, a bridge driving module and a DC (Direct Current)/DC module; the input end of the A/D conversion module is used for inputting the voltage and the current data of the photovoltaic battery pack, and the output end of the A/D conversion module is connected with the input end of the A/D control module; the input end of the MPPT module is connected with the output end of the A/D control module, and the output end of the MPPT module is connected with the input end of the PWM module; the input end of the bridge driving module is connected with the output end of the PWM module; and the output end of the bridge driving module is connected with the DC/DC module outputting voltage signals. In the invention, the MPPT module is internally arranged, which ensures that the output of each photovoltaic assembly is maintained at a maximum power point, thereby the efficiency of a photovoltaic system is effectively improved.

The invention discloses a high-voltage inverter remote-monitoring system based on a gateway technology and a realization method thereof, belonging to the technical field of remote communication of a high-voltage frequency conversion system. In the remote-monitoring system, a MODBUS-PROFIBUS serial gateway is adopted as protocol conversion equipment between a high-voltage inverter with an RS485 serial communication interface and a PLC (Programmable Logic Controller) with a PROFIBUS-DP communication interface, so that the high-voltage inverter is not subjected to any programming to be accessed into a PROFIBUS-DP field bus network to realize the remote monitoring of the high-voltage inverter. After system hardware is constructed, only the MODBUS-PROFIBUS serial gateway is simply collocated in the PLC software programming environment, and the PLC can be like an I/O (Input/Output) module of a reader-writer to read and write data in the high-voltage inverter. The system realization is simple, many programming work about communication protocols is saved, and the working efficiency is improved. Moreover, the MODBUS-PROFIBUS serial gateway is installed in the high-voltage inverter, and the higher anti-interference performance of the communication line of the system is ensured.

The invention relates to the technical field of industrial control, in particular to a switching value output self-protection circuit. The switching value output self-protection circuit achieves the technical purpose that a system is maintained conveniently. The circuit comprises an output relay, a Hall current sensor, an and gate and an output drive module for driving the output relay to be switched on and switched off. The drive signal output end of the output drive module is connected to the control end of the output replay. The primary side output end of the Hall current sensor is connected to a static contact of the output relay. One input end of the and gate is connected to a secondary-side voltage output end of the Hall current sensor, the other input end is connected to a switching value signal source, and the output end of the and gate is connected to the source signal input end of the output drive module. The circuit is especially suitable for the switching value output module of a digital control platform based on an FPGA technology.

The invention relates to a parking lot management technology, in particular to a method and a device for parking lot management based on an indoor communication network. The parking lot management system provided by the invention comprises a data processing center, a gate control unit and the indoor communication network. The indoor communication network comprises positioning nodes, parking space detecting nodes and a wireless router, wherein the positioning nodes periodically transmit positioning signals, a mobile terminal can determine a specific position thereof in a parking lot at present according to the positioning signals, and each positioning node is provided with a wireless communication module; the parking space detecting nodes are arranged at corresponding positions of parking spaces, detect parking space states, and each comprises a wireless communication module; the wireless router can upload parking space states detected and transmitted by the parking space detecting nodes to the data processing center; and the positioning nodes and/or the parking space detecting nodes are LED lighting devices distributed in the parking lot.

The invention discloses a resource receiving control method, which includes that a strategy decision-making function unit receives a service request. According to the service request, the strategy decision-making function unit identifies a load-bearing control module; and selects corresponding service logic according to the load-bearing control module; and processes the resource receiving and control. In the technical proposal of the invention, no matter requesting resource to the fixed access net defined in a TISPAN, or to the wireless access net defined in a 3 GPP, the load-bearing control modules are all identified by the strategy decision-making function unit xPDF. The strategy decision-making function unit xPDF selects corresponding service logic and processes the resource receiving and control. The xPDF hides the detail of the access net from an AF and simplifies the networking proposal; so the system maintenance becomes simple and convenient.

The invention provides a method and system for realizing multi-board card and multi-data channel management in communication equipment. The specific method comprises realizing the multi-board card andmulti-data channel management in the communication equipment based on PCI, wherein the board card management information and the embedded management channel information are transmitted through a PCIbus, a PCI controller finishes the data transmission physical layer signal processing, and the management unit PCI controller is responsible for the bus arbitration. All management information is transmitted through the PCI bus, the board card and the management unit disk only have one physical interface, the physical interface type is simplified, and the design is convenient. The bus supports multi-host communication and plug and play, and is convenient for the system capacity enlargement and upgrade and update. The processing on the embedded management data channel physical layer and the data link layer is finished by the board card, the management unit design is unnecessary to change when the board card type is increased or the port capacity is changed, and the production and the systemmaintenance are convenient.

The invention discloses a double-linkage-car elevator system. A plurality of groups of double-linkage-car elevators are sequentially arranged in a hoistway, escaping doors are arranged on specific side walls of cars of the groups of double-linkage-car elevators, the cars of the adjacent groups of double-linkage-car elevators can be connected in a butt-joint mode through the escaping doors, the elevators are rescue elevators for one another, butt-joint rescue between corresponding cars of the adjacent groups of double-linkage-car elevators can be achieved, civil engineering arrangement is simple, and system maintenance is convenient. Since four cars on the two sides of the adjacent groups of double-linkage-car elevators are connected in a butt-joint mode at the same time, the rescue efficiency is greatly improved. The invention further discloses a failure rescue method for the double-linkage-car elevator system.

The invention discloses a pressure storage type fire extinguishing device. The fire extinguishing device comprises fire extinguishing bottles, electrical explosion devices, valve bodies, siphons, fire extinguishing pipelines, a control terminal, a cable assembly, a flame detector, an infrared thermal imaging detector and a temperature and pressure detector, and fire extinguishing agents are stored in the fire extinguishing bottles; the electrical explosion devices are connected with the valve bodies through threads; the valve bodies are connected with the fire extinguishing bottles through threads, and tank body sealing is achieved; nitrogen or air is stored in sealed cavities formed by the fire extinguishing agents, the fire extinguishing bottles, the siphons and the valve bodies; a pressure gauge is installed on one side of each diaphragm sealing type valve body; the valve bodies are connected with the siphons through threads and connected with the fire extinguishing pipelines; and the control terminal is provided with the infrared thermal imaging detector, the temperature and pressure detector and the flame detector. By cooperating with a fire extinguishing method, the device not only has the advantages of being convenient and fast to operate, safe, efficient and the like, but also can achieve multiple times of effective fire extinguishing.