47results about How to "Implement redundant functions" patented technology

The power unit includes H bridge inverter circuit, capacitance in DC section connected to DC bus in inverter circuit, and control circuit for controlling operation of the power unit. The power unit also includes a clipping energy consumption circuit. Combining a small quantity of active power absorbed by active electric power filter, the method realizes controlling DC bus voltage of power unit. The active electric power filter includes following parts: inverter with each phase including at least one power unit; voltage detection circuit, central control system, filtering circuit, precharge circuit, income line switch, interface and communication circuit, and cooling unit etc.

The invention provides a protection method of a modular multi-level current converter. The current converter comprises a sub-module controller and a sub-module; when the sub-module breaks down, the sub-module controller monitors and acts on the sub-module, so as to remove the failed sub-module timely, and the normal operation of the modular multi-level current converter can be ensured. According to the protection method provided by the invention, the overall current converter is not exited due to the fault of the sub-module, meanwhile, the sub-module is not integrally damaged due to the fault of the components in the sub-module, thereby greatly improving the utilization of the modular multi-level current converter and improving the stability of the system operation.

The invention discloses a rotating transformer position measuring system. The system comprises a signal processing circuit, a hardware decoding circuit and a singlechip, wherein the signal processing circuit is electrically connected with a rotating transformer and the singlechip, and is used for receiving and processing an excitation signal of the rotating transformer and two channels of orthogonal sinusoidal signals and outputting the signals to an input / output (I / O) port of the singlechip and two input channels of a quick analog / digital (A / D) sampling module; and the hardware decoding circuit is electrically connected with the rotating transformer and the singlechip, and is used for decoding rotating transformer position information and generating and outputting a position signal to a serial peripheral interface (SPI) communication interface of the singlechip. The quick A / D sampling function of the singlechip is used, the two channels of orthogonal sinusoidal signals of a secondary coil of the rotating transformer are acquired by the singlechip, the rest part of signal processing is finished in the singlechip through programming, and the redundancy function of the system can be realized by only a few peripheral circuits, so that the reliability of the system is greatly improved.

The invention relates to the field of video monitoring and discloses a high-reliability and easily-extensible video storage and retrieval method and a system thereof. Reliability of the system is improved, information islands are prevented, management complexity is reduced, and capacity is enlarged. The method is based on a hardware system which comprises at least two main devices, at least one slave device and at least a camera, the main devices are connected in parallel, mapping tables and databases are arranged in the main devices, one of the main devices serves as a main working device, and other main devices serve as main hot-standby devices. The high-reliability and easily-extensible video storage and retrieval method includes steps that the main working device inquires the slave devices corresponding to the cameras in the mapping table of the main working device; the main working device triggers the cameras to record videos and triggers the corresponding slave devices to store data of the videos; and the main working device and the main hot-standby devices update the respective databases synchronously.

The invention discloses an industrial Ethernet switch integrating PRP / HSR redundant protocols. The industrial Ethernet switch comprises a programmable logic chip FPGA, a multi-interface Ethernet switch chip Switch and a plurality of Ethernet physical layer interface chips PHY0-PHYn. The Ethernet physical layer interface chips PHY0-PHYn are connected with the programmable logic chip FPGA through network interfaces respectively, and the programmable logic chip FPGA is connected with the multi-interface Ethernet switch chip Switch through a network interface. According to the industrial Ethernet switch integrating PRP / HSR redundant protocols, the FPGA is used as a carrier to achieve a PRP / HSR module, the Switch chip is used in cooperation, and the PRP / HSR protocols are supported on the basis that the common switch function is achieved; besides, a message lingering delay measuring function is achieved, and good application prospects are achieved.

The invention relates to a train smoke alarm communication method based on an independent module combination 3U case structure, and the method comprises the steps: recognizing a carriage signal through an IO board card external address line, and extracting the detector configuration; enabling a detector to collect temperature information and smoke and thick fog information, and transmitting the information to a CPU board card for processing; enabling the CPU board card to judge the collected information, and outputting alarm information; enabling the CPU board card to transmit alarm information to an HMI display screen of a driver's cab after alarm; enabling the IO board card to cut off the signal output of a vehicle safety loop, transmitting the alarm information to the HMI display screen of the driver's cab, and enabling a red alarm indicating lamp of a DISP board card to be turned on; and enabling a DS board card, an Enet board card and a wireless board card to collect, store and upload the temperature information, the smoke and thick fog information and alarm information. When the detector communicates with a CAN board card, the method carries out the progressive addition or subtraction calculation of a CAN frame address of the detector through the forwarding mechanism of the detector. When the detector receives CAN frames with different addresses, the addresses of response frames are also different, thereby improving the configurability of a system.

The invention discloses a test platform of a controller area network (CAN)-based light rail vehicle network control system, which comprises a driver console A, a driver console B, a control cabinet A, a control cabinet B and a subsystem simulation cabinet, wherein the driver consoles A and B have the same structure; the control cabinets A and B have the same structure; and the driver console A, the control cabinet A, the subsystem simulation cabinet, the control cabinet B and the driver console B are connected by a CAN. The test platform can greatly shorten the debugging time of the vehicle network control system so as to shorten the time of delivering vehicles to users by original equipment manufacturers and finally realize the advanced delivery or operation of the vehicles. The test platform and a research platform are provided for the CAN technology-based control system, are favorable for the popularization and application of a CAN system in China and further promote the diversified development of the light rail vehicle network control system in China.

The invention relates to an alternating current transmission system, in particular to a vehicle alternating current transmission system, and solves the defects and the problems of a transmission way of an existing heavy track car. The system comprises a traction system and an auxiliary system, wherein the traction system consists of a first traction system and a second traction system; the first traction system and the second traction system have the same structure and independently comprise a diesel engine, a permanent magnet synchronous generator, a four-quadrant traction rectifier, a traction inverter and an asynchronous traction machine; the auxiliary system comprises an auxiliary system direct current bus which is connected with an auxiliary inverter; the direct current bus of the rectifier of the first traction system is connected with the auxiliary system direct current bus through a first DC / DC converter and a first fling-cut switch; and the direct current bus of the rectifierof the second traction system is connected with the auxiliary system direct current bus through a second DC / DC converter and a second fling-cut switch. The alternating current transmission system isespecially suitable for a GCD-1000II heavy track car and is also suitable for other vehicles.

The invention discloses a method of making records in a synchronous way for a work master station and a spare master station. Steps included are as follow: a SOE work master station sends a hardware synchronous pulsing signal to a SOE spare master station; the SOE work master station sends an absolute time required to send the hardware synchronous pulsing signal to the SOE spare master station; the spare master station calculates time difference (Delta t) between the time (T1) of receiving the hardware synchronous pulsing signal and the absolute time required to send the hardware synchronous pulsing signal. The spare master station judges the time difference (Delta t). When the absolute time difference (Delta t) is beyond a specified limit to an extent, the SOE spare master station perform time compensation; the SOE work master station sends the original record from a SOE slave station to the SOE spare master station. The invention can help the work master station and the spare master station make records in a synchronous way, realizing a redundant function of the SOE spare master station for the SOE work master station.

The invention provides an AC / DC hybrid electric power system for an aeronautical multi-electric engine and a design method thereof. The AC / DC hybrid electric power system for an aeronautical multi-electric engine comprises two parallel built-in variable frequency AC starters / generators; the output end of each built-in variable frequency AC starter / generator is connected with an AC / DC converter; the output end of the AC / DC converter is connected with a DC bus; the DC bus is connected with a DC / AC converter and a bidirectional DC / DC converter; the DC / AC converter is connected with an AC bus is used as an output; the bidirectional DC / DC converter is connected with a storage battery; both the DC bus and the alternating current bus are connected with a load; the AC / DC converter is an autotransformer active filter rectifier; and the DC / AC converter is an inverter adopting the virtual synchronous generator technology. The AC / DC hybrid electric power system for an aeronautical multi-electric engine in the invention solves the problem that the power generation capacity of the conventional power system of the existing aeronautical engine cannot meet the operating requirements of the aeronautical multi-electric engine.

The invention relates to a microgrid control technology, in particular to a community microgrid distributed control system. The community microgrid distributed control system comprises a unit control system, a park management system, a data server system and a network service system which are connected in sequence, wherein the unit monitoring system is used for carrying out real-time monitoring on field equipment; the park management system is responsible for coordination control and operation optimization of a microgrid of the whole park; the data server system is responsible for data storage, management and maintenance of the system; the network service system is responsible for carrying out data communication with an external network and ensuring network security of the system. The community microgrid distributed control system can achieve a comprehensive monitoring function, a regional operation control function, a redundancy function, a fault detection and protection function and a power balance control function, and further can realize smart community microgrid management control and intelligent building power demand-side control.

The invention discloses a rail transit train door redundancy network system based on U-shaped network topology, includes vehicle-level Ethernet network units with matching number of cars, each vehiclelevel Ethernet network unit includes two main door control units and a plurality of local door control units, realizing the Ethernet network redundancy function of the rail transit train door, so that if a single point of failure occurs on an Ethernet network, no packet loss occurs and the network fail recovery time is 0 ms, effectively improving the safety and reliability of train door network.The invention only occupies two Ethernet network ports of the train Ethernet switch, and the whole vehicle door network adopts the U-shaped network topology structure to connect. Compared with the traditional star network topology, the invention can save the number of the Ethernet switch and the network cable, greatly reduces the vehicle manufacturing cost, and has good application prospect.

The invention discloses a redundant distributed optical fiber line-type temperature sensing fire detection system. The system comprises a plurality of distributed optical fiber line-type temperature sensing fire detector host units with a redundancy function and temperature sensing optical fiber units. The invention further discloses a redundant distributed optical fiber line-type temperature sensing fire detection method. According to the invention, in redundant design schemes of important application places such as an underground comprehensive pipe gallery, an urban track traffic tunnel and a road tunnel, the redundancy function can be realized without any additional hardware investment cost and external technology means, environment temperatures on two ends of a breaking point and the propagating speed of the fire can be continuously detected when an optical fiber has the breaking point, and when one detector host fails, other detector hosts connected therewith start the redundant detection function, so that the reliability of the distributed optical fiber line-type temperature sensing fire detection system is effectively improved, the investment cost is saved, and the efficiency is improved.

The invention relates to an assembly structure and an assembly method of a double-power-assisted mechanism of a recirculating ball steering gear. The invention belongs to the field of commercial vehicle electric power steering gears. The double-power-assisted mechanism is adopted on the recirculating ball type mechanical steering gear, and due to the fact that the double-power-assisted mechanism is adopted, when the output torque is low, the transmission ratio of the speed reducing mechanism can be reduced, and therefore the boundary dimension of the speed reducing mechanism is reduced; or the transmission ratio of the reducing mechanism is kept unchanged, the motor output torque requirement is reduced, and the motor cost and the motor appearance size can be greatly reduced. When the output torque is high, the requirement for the transmission ratio of a single speed reducing mechanism can be lowered, and the problems that the transmission ratio of a super-large speed reducing mechanism is caused by the requirement for the output torque, the appearance size is large due to the super-large transmission ratio of the speed reducing mechanism, and the strength of the speed reducing mechanism is sacrificed for reducing the appearance are solved.

The invention is applicable to the field of power supplies, and provides a cold backup switching method and circuit for a redundant power supply, and the redundant power supply. The cold backup switching method comprises the steps of sampling output total current, an determining the redundant power supply efficiency according to the current sampling value; judging whether the redundant power supply efficiency is lower than half load; if so, outputting a first cold backup control signal or a second cold backup control signal; disconnecting a first branch circuit according to the first cold backup control signal or the second cold backup control signal, and controlling the power supply to be output through a second branch circuit; or otherwise, outputting a first working control signal or a second working control signal; closing the first branch circuit according to the first working control signal or the second working control signal, and controlling the power supply to be output through the first branch circuit, wherein the output voltage of the second branch circuit is less than that of the first branch circuit. When the power supply efficiency is lower than the half load, the power supply is controlled to enter the cold backup state to improve the efficiency of the power supply; and when the normal power supply is switched to the backup power supply, voltage output is always kept without requiring a large capacitor for buffering, so that the redundant power supply is high in reliability and low in cost.

The invention discloses a multisystem fusion display device for a train and a method for implementing the multisystem fusion display device for the train. The device comprises a fusion display module and a display master control module. The fusion display module is used for providing fusion display interfaces. The fusion display module comprises more than one multi-interface display screen, and each multi-interface display screen comprises more than two display interfaces. The display master control module is used for controlling fusion display of information and comprises a data receiving unit, a display information output unit and a display control unit which are connected in sequence. The data receiving unit is used for receiving monitoring information output by a plurality of train systems used for monitoring different states of the train, corresponding information is output by the display information output unit, and the display control unit is used for controlling the display information corresponding to each train system to be fused and displayed through the display interfaces in the corresponding multi-interface display screens. The method is used for implementing the device. The device and the method have the advantages of being simple in structure, capable of meeting the requirement for display of multiple systems in the rain, small in occupied space and high in redundancy.

The invention discloses a variable pitch system of a wind generating set. The variable pitch system of the wind generating set comprises at least one paddle, paddles are respectively connected with a hub, the hub comprises a hub internal gear, an A encoder is arranged in the hub, the A encoder is connected with a master control, an approach switch is further arranged in the hub, the approach switch is rightly opposite to the inner gear face of the hub internal gear, and the approach switch is connected with the master control. Due to the fact that a B encoder used in the prior art is replaced by the approach switch in the variable pitch system of the wind generating set, redundancy function of encoders can also be achieved, and meanwhile cost is reduced.

The invention relates to a magnetic levitation guide control simulation system, on one hand, force decoupling is realized through mechanical design, and a single guide unit is independent from the system and is considered independently, so that a model structure is simplified; on the other hand, the coupling relation (information interaction relation) between the adjacent guide control loop and the opposite guide control loop is comprehensively considered, and the gaps between the suspension device (maglev train) and the tracks on the two sides are kept near a rated value (within a preset range) through simulation control, so that the fluctuation range of the gaps is within an allowable value; the method not only considers closed-loop control loops of respective suspension points, but also considers information interaction between adjacent and opposite loops, is strong in simulation authenticity, high in accuracy and strong in matching performance, and also can realize a redundancy function.

The invention relates to the technical field of detector communication, more particularly, to a smoke detector based on an automatic addressing mode and a communication method. The smoke detector includes a fire controller FSDCU and n detectors FSD. The fire controller FSDCU and the detectors FSD each are provided with a port CAN#0 and a port CAN#1. The ports CAN#0 and the ports CAN#1 all have the function of receiving and transmitting a frame address. The fire controller FSDCU and the n detectors FSD are connected in sequence. The fire controller FSDCU and the adjacent detectors FSD are connected through independently set CAN buses and the adjacent detectors FSD are connected through independently set CAN buses. Each detector FSD is provided internally with a data transfer module. The received command frame addresses can be subjected to increment or decrement operation through the data transfer modules to distinguish the CAN frame addresses of the detectors. When the detectors receive CAN frames of different addresses, addresses of response frames are also different, the process of address encoding of the detectors is eliminated, and the system configurability is enhanced.

The invention relates to a five-degree-of-freedom suspended electric power generation system, which comprises an enclosure, a rotating shaft, a three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the left end is actively suspended in an axial direction, a three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the right end is actively suspended in an axial direction, and two auxiliary bearings, wherein due to the two three-degree-of-freedom bearing-free motors, the five-degree-of-freedom suspension of the system is realized; and a redundancy function is realized in the axial direction. The three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the left end is actively suspended in the axial direction, is used as a power generator and outputs electric energy; and the three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the right end is actively suspended in the axial direction is used as a motor and outputs a torque. The five-degree-of-freedom suspended electric power generation system is integrated with an electric function, a power generation function and a suspension function, and can be widely applied to a plurality of special power transmission fields, such as aerospace, life sciences, chemical engineering, semiconductor industries and the like.

The present invention relates to a power supply architecture system of a desktop processor, comprising an adapter board arranged on the desktop processor, a first power supply branch circuit, and a system power supply for supplying power to the desktop processor through the first power supply branch circuit, The first power supply branch includes a first standby power supply sub-circuit, a first power supply sub-circuit and a second power supply sub-branch connected in parallel, the first standby power supply sub-circuit, the first power supply sub-circuit and the second power supply sub-circuit are respectively connected to the desktop processor and supply power to the desktop processor; the transfer base is connected to the first power supply sub-circuit, and the transfer base is connected to the The output voltage of the first power supply sub-circuit is converted to provide power for the desktop processor. By implementing the present invention, the redundancy function of the power supply structure of the desktop processor can be realized at a lower cost, while the utilization rate of the power supply can be improved, and the hot swapping of the power supply can be realized.

The invention provides a position information acquiring method and a position information acquiring system of a rotating transformer, and an electronic device. The position information control method of the rotating transformer comprises the steps that an excitation signal from a hardware decoder is received to generate two orthogonal sinusoidal signals, and the first preset processing of the two orthogonal sinusoidal signals is carried out; the two orthogonal sinusoidal signals after the first preset processing are decoded to acquire the first position data representing the position information of the rotating transformer; second position data representing the position information of the rotating transformer from the hardware decoder is directly received; the acquired first position data and the second position data are analyzed and compared with each other to determine whether the error therebetween is smaller than a preset value; when the answer is yes, the hardware decoder is normal, and the second position data is directly adopted; when the answer is no, the hardware decoder is faulted, and the first position data is adopted. Decoding results are guaranteed to be stable and reliable, and an anti-interference capability is good.

The invention relates to a train smoke alarm communication method based on an independent module combination 3U case structure, and the method comprises the steps: recognizing a carriage signal through an IO board card external address line, and extracting the detector configuration; enabling a detector to collect temperature information and smoke and thick fog information, and transmitting the information to a CPU board card for processing; enabling the CPU board card to judge the collected information, and outputting alarm information; enabling the CPU board card to transmit alarm information to an HMI display screen of a driver's cab after alarm; enabling the IO board card to cut off the signal output of a vehicle safety loop, transmitting the alarm information to the HMI display screen of the driver's cab, and enabling a red alarm indicating lamp of a DISP board card to be turned on; and enabling a DS board card, an Enet board card and a wireless board card to collect, store and upload the temperature information, the smoke and thick fog information and alarm information. When the detector communicates with a CAN board card, the method carries out the progressive addition or subtraction calculation of a CAN frame address of the detector through the forwarding mechanism of the detector. When the detector receives CAN frames with different addresses, the addresses of response frames are also different, thereby improving the configurability of a system.

The invention relates to a brake-by-wire device with a redundancy function and a control method thereof. The device comprises a brake disc, calipers, a power take-off gear, a gear shaft, a lead screwshaft, an electromagnetic clutch, a nut assembly, a return motor, a motor support, a support, a brake oil cylinder, a right friction plate, a left friction plate, a first two-position two-way electromagnetic valve, a second two-position two-way electromagnetic valve, a vehicle speed sensor, a controller and a gear sensor. Vehicle kinetic energy can be fully utilized as a power source, a driving motor adopted in the prior art is omitted, and the cost is effectively reduced; a gear power take-off mechanism is used for driving an execution structure to generate braking force, and the braking force of a brake is controlled through the electromagnetic clutch. A redundancy function is realized through coupling with a conventional hydraulic braking system; the brake-by-wire device has the advantages of the high integration level, the high response speed and low cost; and when a vehicle is braked and locked, a hydraulic braking switch control mode is changed into a braking force continuous adjustable mode, and higher control precision is achieved.

The invention discloses a drive-by-wire redundancy braking system for high-level automatic driving, which comprises a three-outlet liquid storage tank, a hydraulic control system, a hydraulic control system and a hydraulic control system, the brake pedal is used for operating a brake action; a piston of the double-cavity tandem type pedal main cylinder is fixedly connected with the brake pedal operating handle and is used for providing initial brake pressure, and the connecting end of the double-cavity tandem type pedal main cylinder is communicated with the connecting end of the three-outlet liquid storage tank through a pipeline. The double-winding hollow shaft motor assembly is internally provided with the first double-winding hollow shaft motor winding and the second double-winding hollow shaft motor winding, and the electronic control unit ECU also comprises the auxiliary controller ECU and the main controller ECU, so that when the first double-winding hollow shaft motor winding fails, the second double-winding hollow shaft motor winding is involved in time; and when the auxiliary controller ECU fails, the main controller ECU of the motor control part also intervenes in time, so that the effectiveness of all braking functions can be ensured, and accidents are avoided.

The invention relates to a power supply architecture system for a desktop processor. The system comprises an adapting bottom board, a first power supply branch and a system power source, wherein the adapting bottom board is arranged on the desktop processor, and the system power source supplies power to the desktop processor through the first power supply branch. The first power supply branch comprises a first standby power supply sub-branch, a first power supply sub-branch and a second power supply sub-branch in parallel, and the first standby power supply sub-branch, the first power supply sub-branch and the second power supply sub-branch are respectively connected with the desktop processor to supply power to the desktop processor. The adapting bottom board is connected with the first power supply sub-branch and coverts output voltage of the first power supply sub-branch to supply power to the desktop processor. By implementation of the power supply architecture system, the power source utilization rate can be increased while a redundancy function of the power supply architecture system for the desktop processor can be realized by low cost, and hot swapping of the power source can be realized.

The invention discloses a safe and redundant automatic driving computing platform and a control method thereof. The computing platform includes at least two performance processors MPU, which are used to control the operation of an extended computing unit, that is, a functional algorithm module; at least one microcontroller MCU, It is used to control the switching of the performance processor MPU; at least two Ethernet switches are used to realize the communication between the performance processor MPU. The performance processors MPU are mutually backup, and when the main performance processor MPU is abnormal, the redundant backup performance processor MPU controls the operation of the function algorithm module. The invention realizes the redundant function of the automatic driving computing platform (controller) through the design of the network, hardware and middleware software, and can realize the real-time redundant takeover when the network, hardware and algorithm unit of the computing platform itself fails, and give the vehicle Sufficient capability for exception handling.

The invention provides a dual-communication system based on ARCNET and Ethernet. The system comprises a processing module, an Ethernet communication module, at least two ARCNET communication modules, and photoelectric conversion modules which are in electrical connection with the ARCNET communication modules in a one-to-one manner. The processing module comprises a microcontroller, an external extended SDRAM and an external extended Flash memory, wherein the external extended SDRAM and the external extended Flash memory are electrically connected with the microcontroller. Each ARCNET communication module is electrically connected with the microcontroller, and the microcontroller is electrically connected with the Ethernet communication module. The system achieves the mutual communication between the ARCNET network and the Ethernet network.

The invention relates to the field of power electronics, and particularly provides a parallel module unit applied to a power electronic transformer, which comprises a power module (IGBT), a power unit board, a thermal management assembly, a flexible connection assembly, a fusing loop assembly and a module shell, adopts SCR-DAB topology, and adopts a parallel connection mode to share a direct current bus by multiple modules. The problem of insufficient current-carrying capacity of a single module is solved, and bidirectional energy flow is realized. The modularization degree of internal components is high, and production is convenient; due to the design of a guide rail type base, electrical connection can be rapidly achieved, and the maintainability is high; a flexible socket connection mode is adopted, so that a hot plug function is realized; due to a double-air-duct structure, the overall heat dissipation efficiency of the module is high; the size and weight are small and the power density is high; and a sheet metal part and an insulating part are matched for use, so that the mechanical performance and the electrical performance are effectively guaranteed, and the safety of the module unit is high.