299results about How to "High reliability requirements" patented technology

The invention provides a hybrid type rapid direct current breaker, comprising: a main flow branch, a current transferring branch and an energy consumption branch. All are connected in parallel. The main flow branch comprises a rapid mechanical switch unit and a main branch sub-module unit. The two units are in series connection. The current transferring branch comprises valve module units in successive cascade connection with each valve module unit comprising a plurality of semiconductor modules in series connection. The energy consumption branch comprises energy consumption components in successive cascade connection. According to the invention, the design of the breaker structure is such a design featuring the electrical topology corresponding to modularization. This means that for the application requirement of different voltage grades, the structure can be expanded to do so. As the breaker adopts a single platform supporting structure, all functional units can be integrated onto the platform, therefore, making the equipment highly integrated, small in size, and strongly resistant to earthquakes. Highly reliable and flexible in structure, better electric compatibility can be achieved. With the breaker, it is possible to rapidly cut off the current in fault when the direct current system meets a fault.

The invention belongs to the technical field of statistical pattern recognition and image processing and particularly relates to an optimization algorithm of unmarked flat object recognition. The optimization algorithm comprises the steps of taking local feature key points as features of an unmarked object, and extracting features in initial stages of an off-line training stage and a real-time recognition stage by means of a dichotomy decision algorithm; performing off-line training on the key points through a random Ferns classifier; adopting a random sampling consistency algorithm in the recognition stage to obtain the position and the posture of the object in a real-time frame; adding position and posture information of the target object obtained by calculation to a virtual object, and overlaying position and posture information in an actual scene to complete an augmented reality system. According to the optimization algorithm, two optimizations are performed, namely, weighting screen is performed on the key points in a feature detection stage, and an improved ARANSAC fitting algorithm is adopted to enable interior points in an initial random set to be scaled-up and improve fitting performance in the recognition stage. Compared with a basic line algorithm, performance in all aspects can be improved greatly, and requirements for real-time performance and reliability of the augmented reality system can be met.

This invention relates to a industry Ethernet imbed real time control system, which comprises two pieces of CPU boards with same frame and function through two network gates and central control system communication to accept orders and feedback information; wherein, when there is fault, message is rapidly switched into redundant channel without impact on work to re-establish connection; two boards are connected to vxWorks operation system to realize communications between boards to test CPU board to judge whether or not normal to trigger CPU and switch between main and assistant without gap.

The invention discloses a comprehensive avionics system for a small-sized general aircraft. The comprehensive avionics system comprises a comprehensive display, a data processing and interface computer and a sensor function module, wherein the comprehensive display is connected with the data processing and interface computer; the data processing and interface computer is respectively provided with the sensor function module, the sensor function modulecomprises an attitude heading unit, an air data computer, a GPS (Global Positioning System) navigation satellite receiver, an ultrashort wave radio, a multi-mode receiver, an air traffic-control responder, a motor parameter acquirer and an audio controller; the comprehensive display is connected with the data processing and interface computerthrough a high-speed data bus; and the data processing and interface computer is connected with the sensor function module through a point-to-point data bus. The comprehensive avionics system disclosed by the invention has the characteristics of high integration level, capability of improving flight experience, flexibility for configuration and extension, high reliability, low cost, and capability of meeting requirements of general aircrafts on comprehensive performances.

The invention relates to an electric car motor controller. The controller comprises a direct current bus capacitor, an IGBT module, a metal support, a driving board, a current sensor, an AC busbar, a DC busbar assembly and a Y capacitor which are arranged in a main box body. An upper box body is also included. An internal portion of the upper box body is provided with a wire connection seat assembly, a shielding board, a control board, a cathode change over busbar, an anode change over busbar, an air conditioning connector, a microswitch, an air conditioning insurance and a direct-current high-voltage interlock connector. A direct current connector, an alternating current connector, an air conditioning connector, a low voltage connector, a control board cover and a junction box cover are fixed to an external portion of the upper box body. When the motor controller provided in the invention works, an IGBT and the direct current bus capacitor are vertically placed so that the controller can flexibly adapt to whole car arrangement. And simultaneously the controller possesses advantages that the structure is compact; power density is high; a heat dissipation effect is good; electromagnetic compatibility is good; operation safety is high and so on.

The present invention belongs to the field of electric appliance resource recovering and reusing technology. The technological process of recovering and treating waste printed circuit board includes the following steps: sorting printed circuit boards; separating electrolytic capacitor and other elements and devices mechanically from the printed circuit board; crushing printed circuit board, sieving and separating metal and non-metal gravitationally or electrostatically; crushing electrolytic capacitor, separating the shell metal, separating metal and non-metal of electrolytic capacitor gravitationally, crushing other elements and devices, separating metal and non-metal of other elements and devices gravitationally. The special clamp for separating electrolytic capacitor and other elements and devices mechanically from the printed circuit board is an L-shaped one with continuous single-end notches in two arms.

The invention discloses a tea making machine capable of automatically making tea water with better taste. The tea making machine comprises a water supply unit, a tea making unit, a tea water outlet unit and a control unit, wherein the tea making unit comprises a water container, a water permeable vessel and a cover, and the water permeable vessel is detachably arranged in the water container; the contact unit comprises an intelligent control module, an input module, a storage module and an acousto-optic prompting module, and the input module, the storage module and the acousto-optic prompting module are respectively and electrically connected with the intelligent control module; and the tea making machine also comprises a first temperature control device and a first liquid level sensor which are arranged in the water container and are respectively and electrically connected with the intelligent control module.

The invention provides a launch section vibration attenuation and orbital section vibration isolation integrated load supporting device which can realize the variable stiffness requirements of high stiffness and high damping in a launch section and low stiffness and low damping in an orbit section, can realize launch section vibration attenuation and orbital section vibration isolation function integration and meanwhile has the very high reliability. The launch section vibration attenuation and orbital section vibration isolation integrated load supporting device comprises a load platform, a vibration isolation module and a connection support module. The upper and lower ends of the vibration isolation module are connected to the load platform and the connection support module, the vibration isolation module is of a closed parallel structure, and the requirements of the launch section for the large load and the high reliability of the mechanical environments can be realized. Meanwhile,symmetrical and inclined support design is adopted, the three-dimensional equal stiffness and equal fundamental frequency function in a space coordinate system is achieved, and the good stability is achieved. By bidirectionally adjusting the compression of a gel vibration isolation component, the variable stiffness design requirements are met, and the strong adaptability to the complex space mechanical environments is achieved. The supporting device is light in weight, small in size, simple in structure, low in manufacturing cost and broad in application prospect.

The invention discloses a virtualized data center scheduling system and method. The virtualized data center scheduling system comprises a service definition and arrangement module, a data center management platform and a network controller. The virtualized data center scheduling method comprises the steps of providing a definition interface for the service type, a resource template and a reliability requirement level, receiving a service arrangement strategy, generating a service function chain, allocating resources of a data center according to the defined service type and the resource template, generating a service node, scheduling the resources of the data center according to the service reliability requirement level to recover the service node after the service node is determined to be abnormal, and formulating a data packet forwarding path of the service node, thereby enabling the service node to be recovered according to the service type, the resource template and the service reliability requirement level defined by the user when the service node is abnormal, thus ensuring normal operations of the service node of the functional service chain, and improving high-reliability services of the data center.

The invention provides a satellite-borne dual-polarization millimeter wave radiometer adopting a quasi-optic technique, and is characterized by comprising a parabolic antenna reflecting surface, a feed source, a polarization separator with a waveguide structure and two millimeter wave receivers, wherein the antenna reflecting surface comprises a parabolic primary reflecting surface and a plane secondary reflecting surface which have a certain distance with the parabolic primary reflecting surface; the plane secondary reflecting surface is used for reflecting the horizontal or vertical polarization waves after polarization separation to one millimeter wave receiver; the polarization separator adopts a quasi-optic polarization aperture plate which is formed by fixing metal wires in parallel distribution on a metal frame; g<lambda/2 and d<g, wherein the g represents the spacing between the adjacent metal wires, the d represents the diameter of the metal wires, and the lambda represents the wavelength of the incidence waves; the polarization separator is positioned below the plane secondary reflecting surface; the plane with the polarization separator and the horizontal plane form a certain included angle, and the range of the included angle is 30-60 DEG; and the polarization separator is used for separating the signals which are reflected by the primary reflecting surface into two paths of refraction and reflection signals which respectively enter the two millimeter wave receivers to be processed.

The invention particularly discloses an industrial GPRS monitoring terminal. The industrial GPRS monitoring terminal comprises a hardware circuit and a software system operating in hardware, wherein the hardware circuit comprises an embedded microcontroller, a GPRS wireless communication module, a power module, a GPRS power management module, a storage module, an input and output module, a hardware watchdog and an indicator lamp; the embedded microcontroller starts or stops the supplying of power to the GPRS wireless communication module by controlling the GPRS power management module; the software system is composed of a bottom-layer hardware driving program, an embedded operating system and a multi-task application program. The high-reliability GPRS monitoring terminal provided by the invention can normally operate in severe application environments such as photovoltaic power stations and wind power plants.

The invention relates to a CPCI redundancy backup system and comprises at least a redundancy backup unit which comprises a first system board module, a second system board module and one or two sections of CPCI bus; wherein, a section of CPCI bus only can be provided with CPCI bus control management by the first system board module or the second system board module at any moment; when the first system board module carries out the CPCI bus control management, the second system board module can receive backup data sent by the first system board module, and when the first system board module breaks down, the second system board module switches the CPCI bus control management authority. The CPCI redundancy backup system can provide the redundancy backup to all plug-ins including a primary system board; a broken-down board can be isolated automatically; and a backup component can be connected automatically. The CPCI redundancy backup system has high reliability and best price performance ratio and is particularly fit for high reliable communication and industry control platform with large I/O data volume, and the CPCI redundancy backup system has wide application prospect in the fields of modern communication, spaceflight, military matters, etc.

The invention provides a robot track positioning method. The method includes the following steps: (1) a robot track positioning system is provided, a robot, at least one track with gaps, a sensing device arranged on the robot and a mileage device arranged on the robot are further included, and the robot can reach a given location through the track; (2) spaces between positioning gaps of the track are arranged symmetrically and unequal spaces between any two gaps are guaranteed; and (3) the sensing device is used for reading positioning gap information on the track, wherein the robot is on the track, and mileage information of the mileage device and space information of positioning gaps are used for acquiring a current location information of the robot, wherein the space information is preset. The robot track positioning method aims at using a manner which is high in accuracy and reliable to finish positioning of the robot in a horizontal position. Compared with positioning manners such as laser, vision, infrared, ultrasound and global position system (GPS), the robot track positioning method is more suitable for applying to the environment which has higher requirements for reliability such as a factory and a converting station.

The invention relates to a low-voltage emergency safety power supply system of a household garbage power plant and a control method of the system. According to the system, a 10KV 0 bus is connected with a 10KV safety power supply through a switch QF01; the 10KV 0 bus is connected with a 400V 0 bus through a switch QF02, a safety transformer AT0 and a switch QF013 in sequence; a safety diesel generating unit is connected with the 400V 0 bus through switches QF014 and QF012; a 10KV II bus is connected with the 400V 0 bus through a switch QF22, a standby transformer AT5 and a switch QF011 in sequence; the 10KV 0 bus is further connected with a 0 bus PT; and the 10KV safety power supply is further connected with a metering PT. According to the safety power supply system and the control method, under the condition that an external power grid loses plant power due to a fault, the unit can be safely stopped and equipment ensuring personal safety can run normally, so that the independence and the stability are improved, and the expense for setting up a special independent power supply from an external power grid is reduced.

The invention relates to a no-halogen cleaning-free soldering flux for a tin wire core, which comprises the following components by mass percentage: 0.5-5 percent of tin oxalate, 0.5-25 percent of organic acid type activator and 0-3 percent of cosolvent, with the rest adopting rosin. Since the tin oxalate is used as an activator along with the organic acid type activators and no halogen is adopted, the soldering flux has good welding performance, no spattering and little smoke and odor can be caused during welding, the quantity of residues can be greatly decreased after welding, a plate surface is free from corrosion, welding points are full and bright, and the insulation resistance is high. The soldering flux is suitable for electronic precision welding with high reliability and solderability requirements.

The invention particularly discloses a software system based on a GPRS monitoring terminal. The software system is composed of a bottom layer hardware driving program, an embedded operating system and a multi-task application program, wherein the multi-task application program is implemented on the basis of a multi-task design mode; a plurality of tasks comprise a starting task, a Modem serial port receiving task, a GPRS scheduling task, a data analysis conversion task, a GPRS link establishment and maintenance task, a system monitoring alarm task, and an equipment data acquisition, storage and uploading task; a state machine of the GPRS link establishment and maintenance task comprises a state conversion process; a multi-task software watchdog is implemented by implementing the multi-task application program. The software system based on the GPRS monitoring terminal, which is high in reliability, can normally operate in severe application environments such as photovoltaic power stations and wind power plants.

The invention discloses a group maintenance decision-making method based on system-level life service information, for solving the problem that the system-level reliability is omitted when the prior art uses part-level information to perform group maintenance decision making. The group maintenance decision-making method based on system-level life service information includes the steps: performingpart-level service life prediction and system-level service life prediction by means of the degeneration data of each part to obtain a system reliability assessment function; calculating the prevention maintenance time of each part by means of the part-level service life prediction information; performing grouping by means of a system task profile and the optimum prevention maintenance time of parts, and calculating the related cost; and finally aiming at the cost and the system reliability, obtaining the optimal strategy of system-level group maintenance by means of a multi-attribute value theory. The group maintenance decision-making method based on system-level life service information can guarantee high reliability and task success rate of the system as the group maintenance decision-making method based on system-level life service information considers the group maintenance cost and combines the system-level service life prediction information. The group maintenance decision-making method based on system-level life service information is suitable for the group maintenance decision making of a product with complicated structure and high reliability.

The invention discloses a horizontal double connecting rod bearing pin insert-draw mechanism for cranes; a first pin drawing plate (1) and a second pin drawing plate (13) are respectively fixed on a bearing pin (12) and a second bearing pin (14); an expansion oil cylinder (15) is provided with a power oil cylinder (9); the piston rod of the power oil cylinder (9) is hinged with a first connecting rod (5) and one end of a second connecting rod (19) and provided with a spring reset mechanism and a limit mechanism; the expansion oil cylinder (15) is hinged with a first swing rod (2)and a second swing rod (16); one end of the first swing rod (2) is drivingly connected with the first pin drawing plate (1), and the other end is hinged with the first connecting rod (5); one end of the second swing rod (16) is drivingly connected with the second pin drawing plate (13) and the other end is hinged with the second connecting rod (19). The invention is a horizontal double connecting rod bearing pin insert-draw mechanism for cranes which has the advantages of simple and compacted structure, convenience in installation and maintenance, stable and reliable performance, and the improved efficiency of the complete machine, and is widely applicable in the series products of large-tonnage crane.

The invention relates to a local relay protection control device and a relay protection method. The relay protection method comprises the steps of respectively transmitting related data information of a power system to a master control module and a starting control module; performing starting logic distinguishing by the starting control module according to the received related data information, and performing protection logic distinguishing and starting logic distinguishing by the master control module according to the received related data information; and outputting a protection action signal when the starting logic distinguishing performed by the starting control module and the master control module acts and the protection logic distinguishing acts. Compared with a relay protection mode for directly performing protection logic judgment, the relay protection module has the advantages that the probability of local protection misoperation is reduced, so that the requirement of high relay protection reliability of local protection in an extremely severe running environment can be met.

The invention discloses a variable-pitch servo driver with a function of energy storage, which belongs to the technical field of wind power generation. The variable-pitch servo driver comprises a rectifying circuit, a current limiting circuit, an energy-storage circuit, a braking circuit and an inverting circuit, wherein the input end of the rectifying circuit is connected with a power grid so asto transmit alternating voltages, one output end of the rectifying circuit is connected with the input end of the current limiting circuit so as to transmit direct voltages, and the other output end of the rectifying circuit is connected with one input end of the energy-storage circuit so as to transmit the direct voltages; and the output end of the current limiting circuit is connected with the other input end of the energy-storage circuit so as to transmit the direct voltages subjected to current limiting, the output end of the energy-storage circuit is connected with the input end of the braking circuit so as to transmit the direct voltages, the output end of the braking circuit is connected with the input end of the inverting circuit so as to transmit the direct voltages, and the output end of the inverting circuit is connected with a driven motor so as to transmit the alternating voltages. The variable-pitch servo driver of the invention is not required to be equipped with other standby powers, is compact in structure, is beneficial to shorten the volume of the whole system, and significantly reduces the cost of a variable-pitch system.

The invention discloses a dual-motor inverter comprising a main box, a first power module, a second power module, an AC plug, a first metal bracket, a second metal bracket, a first driving board, a second driving board, a DC busbar assembly, a DC bus capacitor and a control board. The dual-motor inverter of the invention is mainly used for controlling a wheel motor or a hub motor, a cooling structure adopts parallel cooling, and the balanced cooling and heat dissipation ability of the two power modules can be ensured. A conductive terminal of the AC plug passes through a current sensor to be directly connected to the power module, an AC transition copper bar is omitted, the assembly space and the required cost of the inverter are greatly reduced, thus the dual-motor inverter has the characteristics of high integration, a compact structure, good heat dissipation effect and balanced cooling capability, high electromagnetic compatibility and convenient and fast operation, and especially the requirements of controller layout and high reliability of a new energy vehicle driven by the hub motors or the wheel motor are satisfied.