33 results about "Fault tolerant architecture" patented technology

A fault-tolerant architecture, comprising fault tolerant units, a wire-based communication bus, and respective radio transceivers is offered. The fault-tolerant units communicate using the radio transceivers when communication via the wire-based communication bus is compromised by a fault. The intent is to enhance reliability and fault-tolerance of a distributed system architecture, such as a steer-by-wire system for a vehicle. The novel drive-by-wire/wireless architecture uses multiple wireless sensors and short-range low power radio transceivers associated with various micro-controllers. These sensors and radio transceivers allow the micro-controllers to communicate critical control signals and drive commands in the event of a communications fault, e.g. in a vehicle drive-by-wire system.

Base stations exchange information with users over first wireless communication links. A mobile switching center provides mobile telephone service. An Internet access system provides Internet access service. A data system provides a data service. An Ethernet backhaul system uses an Ethernet format to exchange the information between the base stations and the mobile switching center, the Internet access system, and the data system. Wireless interfaces are coupled to the base stations and are configured to exchange the information over second wireless links. Individual base stations detect a fault in the Ethernet backhaul system, and in response, to route the information away from the Ethernet backhaul system and to the wireless interfaces to provide service restoration.

The present invention provides a method and apparatus for providing fault-tolerance for in-circuit programming systems. The invention operates by storing a minimal set of code to initialize the in-circuit programming process in a protected memory so that if the in-circuit programming process fails, the in-circuit programming process can be restarted from the protected memory. This type of fault-tolerance is especially important in systems which allow the code which accomplishes the in-circuit programming to be modified by the in-circuit programming process. One embodiment of the present invention provides a multiplexer to selectively switch between a normal boot code sequence and a protected boot code sequence, as well as a watchdog timer to monitor the in-circuit programming process to determine whether the in-circuit programming process is not progressing properly.

A method and apparatus for a structure of a flip-flop that is tolerant to the noise pulses occurring due to the presence of crosstalk faults by sampling the input data multiple times before and after the active clock edge. The final stored value at the flip-flop is determined by the resolution of a counter circuit residing in the flip-flop, which is activated at the change of the sampled input data. This counter based resolution mechanism allows for the detection and filtering of the noise pulse induced at the input of the flip-flop due to a crosstalk fault.

The invention is suitable for the technical field of the semiconductor, and provides fault tolerant architecture of TSV oriented to three-dimensional integrated circuit. The redundant structure is composed of N layers of annular structures, and N layers of annular structures are equally divided into six regions through six rays; three RTSVs are arranged on each layer of the annular structure, three RTSVs are uniformly distributed on six rays, the RTSVs at the adjacent layers are dislocated and distributed, the RTSV is arranged at the center of the innermost layer of hexagon; the TSVs are arranged by utilizing the specific symmetry and flexibility of the hexagon, and the location for placing the RTSV can be reasonably selected; the redundant structure is divided into multiple uniform regions, and the redundancy rate of each region is improved, thereby guaranteeing the high repair rate of the whole structure; the RTSVs are uniformly distributed in the TSV array, the symmetry of the routing direction is combined, the condition that the repair path length of the fault TSV is large in difference or the time sequence overhead can be avoided, and the overhead is reduced.

The invention provides a sensor data distribution network fault tolerance architecture and method, aiming at the requirement of an integrated avionics system on the reliability of an integrated signalprocessing subsystem. A sensor data distribution network adopts a dual-redundancy design, redundancy adopts a hot backup working mode, fault detection is performed through a heartbeat mechanism, anda system controller manages the sensor data distribution network through a dual-redundancy control channel. According to the fault tolerance method of the sensor data distribution network, the reliability of the comprehensive signal processing subsystem can be effectively improved.

The invention discloses a fault-tolerant architecture system and a fault-tolerant architecture control method. The fault-tolerant architecture system comprises a processing core unit and a peripheral unit; the processing core unit is used for carrying out local computing, the peripheral unit is used for carrying out global communication and system control, the processing core unit comprises at least two AET cell clusters, each AET cell cluster comprises a central AET unit and three peripheral AET units, the network structures of the central AET unit and the peripheral AET units are the same, and the central AET unit of the AET cell cluster is connected with the three peripheral AET units at an included angle of 120 degrees; each AET unit of at least two AET cell clusters comprises three communication links, the processing core unit is configured with a connection strategy, and the connection strategy comprises that peripheral AET units in different AET cell clusters are connected with each other. The invention provides a fault-tolerant architecture system and a fault-tolerant architecture control method. A fault-tolerant architecture has a telescopic, highly reliable and flexible network structure.

The invention provides a data consistency method based on an unreliable network, which is used for achieving data consistency through a fault-tolerant mechanism in a condition of unreliable network transmission. The method comprises the following steps: 1, a redundant fault-tolerant architecture is defined; 2, in the condition of unreliable network transmission, a hypothetical condition for data consistency is defined; and 3, a data interaction process and a redundant information processing method are defined. Thus, the method of the invention can be used in important fields such as space andmilitary, thereby enhancing the fault-tolerant ability of the system and the reliability of the key equipment; and the method is applicable to a distributed architecture and can be promoted for faulttolerance for remote network data communication.

According to the multi-machine time scale simulation method suitable for the multi-machine fault-tolerant architecture of the attitude and orbit control system, independent and mutually exclusive data spaces are designed in a shared memory of multiple machines, a data basis is provided for unified management of time scales, a mode of multiple times of time scale synchronization is adopted, the data exchange and transmission process in the shared memory of the multiple machines is subjected to stage division, multiple machines are in a synchronous state in different data processing stages, non-synchronous data are prevented from being introduced into calculation, task-level multi-machine time scale unification is achieved, then a synchronous controller is designed, the synchronous controller is used for communicating with all the machines, synchronization is carried out with simulation time as a control reference, high-priority synchronous parameters are designed, the single-machine debugging process and the multi-machine time mark unification are no longer contradictory, and the system-level multi-machine time mark unification is realized. Finally, the problem of multi-machine time scale unification under a fault-tolerant architecture is solved, the simulation method not only realizes task-level time scale unification, but also realizes system-level time scale unification, and is successfully applied in a space station simulation environment at present.