35 results about "Micro kernel" patented technology

The embodiment of the invention relates to the field of PLC (Programmable Logic Controller), and particularly to monitoring and reconstruction methods of software-defined PLC and devices. The methodsand the devices are used for quickly reconstructing the virtual PLC in a case without powering-down. The method includes: obtaining working status of each physical core on each server in a server cluster and working status of each micro kernel on each physical core by a soft guarder when a fault of the virtual PLC is monitored; determining a target micro-kernel according to the working status of each physical core on each server in a server cluster and the working status of each micro kernel on each physical core; and sending a reconstruction instruction to the target micro-kernel, wherein thereconstruction instruction is used for indication of reconstructing the virtual PLC on the target micro-kernel. Multiple micro kernels are virtualized on one physical core, and thus the virtual PLC runs on a micro kernel; and the PLC is reconstructed on the other micro kernel if the virtual PLC fails, all the micro kernels do not impact one another, and thus fast reconstruction of the virtual PLCcan be realized in the case without powering-down when the virtual PLC is reconstructed.

The present invention relates generally to computer operating systems, and more specifically, to operating system calls in a symmetric multiprocessing (SMP) environment. Existing SMP strategies either use a single lock or multiple locks to limit access to critical areas of the operating system to one thread at a time. These strategies suffer from a number of performance problems including slow execution, large software and execution overheads and deadlocking problems. The invention applies a single lock strategy to a micro kernel operating system design which delegates functionality to external processes. The micro kernel has a single critical area, the micro kernel itself, which executes very quickly, while the external processes are protected by proper thread management. As a result, a single lock may be used, overcoming the performance problems of the existing strategies.

The program enciphering method comprises: with embedded Linux OS as platform, setting the key fit to write only during application, while using the Linux micro-kernel to read the key; coding and compiling the program into executive file; adding a file head to the pre-defined conversion table to prevent copying by user.

The invention provides an emergency command cloud service implementation method and system based on a microkernel cluster. Various kinds of services with specific business processing capacity is virtually encapsulated into the microkernel cluster, mutual synergy is performed according to the service plans generated according to upper module application, and the microcosmic services provided each member in the cluster are combined and encapsulated to convert into macroscopic service manners capable of realizing emergency treatment task planning. The system comprises a physical resource layer, an emergency resource cloud pool, a platform service layer, a module application layer and a user layer. By the emergency command system built by the service method, dynamic searching of valuable emergency service resources in various fields can be achieved, the system capabilities of massive dynamic information and knowledge reasoning, complex function and process recombination calculation, storage and service are improved, and diversified emergency tasks such as emergency cross-department and cross-field real-time information processing, large-range public opinion analysis, complex module deduction, dynamic disaster situation prediction and remote monitoring can be achieved.

The invention discloses an ionic ball polyelectrolyte brush employing a micro-nano carbon sphere as a kernel and a preparation method thereof, and belongs to the field of a nano composite material. The kernel of the ionic ball polyelectrolyte brush is the micro-nano carbon sphere, and an outer brush is an ionic monomer. The preparation method comprises the following steps: loading synthetic azo acyl chloride on the surface of the micro-nano carbon sphere, and synthesizing the ionic ball polyelectrolyte brush employing the micro-nano carbon sphere as the kernel by free radical polymerization. The preparation method disclosed by the invention is simple and feasible. The product prepared by the method takes the micro-nano carbon sphere as the kernel, and is novel in structure, green and environment-friendly, low in cost, and different molecular weights and different grafting densities of ionic ball polyelectrolyte brushes can be prepared by controlling the reaction time and the density of the monomer. The product can be used as a conductive polymer dopant, a morphology control agent, a deflocculating agent, a papermaking wet-end additive and the like.