31 results about "Software fault detection" patented technology

This invention relates to mobile robot software fault dialogue system based on human immune system, which comprises normal module form module, software fault test module, known software fault dialogue module, unknown software dialogue module, software remove module and system restore module, wherein, the normal mode form uses mobile robot software system to establish database; the software fault test module is to test whole software fault; normal mode is determined by all abnormal time and space property.

The invention provides an FDE and FCE considered software reliability growth model establishing method based on ISQ and relates to the fields of software fault detection and fault correction. The problem that the influence of the fault detection working amount and the fault correction working amount on the software reliability is not considered in an existing software reliability growth model and accordingly the practical significance and result confidence level of the model are reduced is solved. The FDE and FCE considered software reliability growth model establishing method comprises the steps of firstly obtaining a mean value function model of the fault detection process of an ISQ-FDEFCE software reliability growth model according to a condition building differential equation of the ISQ-FDEFCE software reliability growth model to be established; then obtaining a mean value function model of the fault detection process of the ISQ-FDEFCE software reliability growth model according to complete correction probability and fault correction time of software faults and the mean value function model of the fault detection process and finishing software reliability growth model establishing based on the ISQ. The FDE and FCE considered software reliability growth model establishing method based on the ISQ is suitable for improvement of the software reliability.

The invention relates to an embedded software system fault detecting and recovering method and system. Multiple application tasks of the embedded software system are monitored in real time; whether the application tasks generate faults is detected; the application tasks generating the faults are restarted. Whether the embedded software system generates a task scheduling fault is detected; when detecting that the embedded software system generates the task scheduling fault, fault recovery is carried out to the embedded software system. In adoption of the method and the system, the partial software faults and integrated software system faults in the multi-task system can be detected in real time; the software system is automatically recovered to the normal operation state when the software system generates the faults; selective software fault detection and recovery is realized; and the detection range is more comprehensive without a dead angle; and the detection is simple and reliable.

The invention belongs to the technical field of software testing, and discloses a software fault detection method and system, a storage medium, a computer program, a terminal and a unified fault detection and repair framework model. Fault detection is considered under the fault detection rate, and an imperfect debugging framework model is repaired and introduced; and five forms are set for the obtained two unified imperfect troubleshooting framework models under initial conditions, and then five condition cumulative fault detection functions are obtained respectively. A unified fault detectionmodel is provided, a single differential equation capable of being used for implementing FDR research is established, then a test model covering fault detection, repair and introduction is established, and a differential equation set capable of implementing FDR research is established. Through the performance of the two types of reliability models under FDR support, it is possible to distinguishdifferent FDR performance, and the importance of establishing the reliability model containing rich test information to improve reliability is verified.

A method and system for quickly informing a backup unit that a primary unit has failed. Normally an exception handler is activated when a software failure occurs and network controller chips or the ASIC interface to a signal bus can operate even though there is a software failure. A software failure notification packet is programmed and stored in a location that is not affected by a software system failure. When a software failure occurs, control is shifted to the exception handler. The exception handler sends a pre-established and pre-addressed packet to the network controller card which transmits this packet to the backup unit. Upon receipt of the packet, the backup unit goes into operation. In some alternate embodiments that include multiple line cards in a single unit, the exception handler sends a signal to a backup unit via a signal bus or a data bus.

A method detects soft failures as follows. A set of artifacts being generated by at least one process in a system is monitored. A number of artifacts being generated by the process is determined to be below a given threshold in response to the monitoring. The process is monitored in response to the determination. A current state of the process is determined in response to the analyzing. A notification is generated in response to the current state of the process including a set of abnormal behaviors.

A method for operating a multi-cylinder internal combustion engine includes controlling opening of intake or exhaust valves, via a step of generating a control current in a control circuit for an electrical actuator coupled with the valve. The control circuit is then monitored for an induced current that differs from the control current, and a signal outputted that is indicative of valve performance responsive to monitoring the control circuit. Another operating method includes determining engine valve performance and also trimming an engine valve based on one signal which is indicative of valve performance. An internal combustion engine includes an electrical actuator configured to control opening or closing of one of an intake valve and an exhaust valve. An electronic control module is configured via a software fault detection routine to determine a performance condition of an intake or exhaust valve in the engine via monitoring a control circuit for induced currents when an electrical actuator coupled with the intake or exhaust valve is de-energized.

The present invention provides a communication equipment software failure detection, collection and recovery method and system, wherein the communication equipment software failure detection, collection and recovery method includes the steps of application module failure detection and single board system software failure steps; the communication equipment software failure detection, collection and recovery The system includes: a fault detection module, a fault collection module, a fault storage module, a chassis management module and a fault recovery module; the present invention can quickly sense the fault and collect enough faults when the communication device has an application module fault or a single board system software fault. Abnormal information is beneficial to analyze the specific reasons after the failure, and automatically restore the software system to the normal operating state, effectively shortening the failure time of communication equipment.

The invention discloses a graph-mining-based electronic tax system software fault location method. The method includes: monitoring an executing process of electronic tax system software to be detected, to obtain a dynamic call structure of the software, establishing a call network graph of weights, and analyzing and discovering a frequent subgraph structure of the software during executing, by means of the graph mining technology. Whether or not the current electronic tax system software has abnormally called frequent subgraphs is determined by comparison according to an abnormal call frequent subgraph library of the electronic tax system software, and software fault detection and location are is achieved.

The invention belongs to the field of computer software fault tolerance and relates to a system for detecting and removing a fault of software in operation and a method for detecting and removing the fault of the software in operation. The system is mainly composed of a monitored procedure and a monitoring server. The monitored procedure comprises a function intercepting component and a fault processing component. The monitoring server comprises a regular file, a regular transferring component and a fault reasoning component. The regular file is read by the monitoring server, the regular file is transferred to a reasoning self-actor through the regular transferring component, and an event sent by the monitored procedure is waited; the function intercepting component and the fault processing component are combined with the monitored procedure in a source code plug-in mounting mode; in the process of operation of the monitored procedure, the event is sent to the monitoring server through the function intercepting component, reasoning is conducted on the event through the fault reasoning component, a conclusion is obtained, and a handling method is returned; the handling method is executed by the monitored procedure through the fault processing component. The system for detecting and removing the fault of the software in operation and the method for detecting and removing the fault of the software in operation are suitable for the fault tolerance of the C / C++ procedure of a known source code and error analysis and repair can be conducted conveniently in the process of software operation.

The invention relates to a three-level failure detection system and method for guaranteeing the normal play of video and audio. A video-audio playing server comprises a video-audio I / O (input / output) board card, an application software failure detection device, an operating system, a board card driving program and a video-audio playing application program, the video-audio I / O board card comprises a board-carried signal switching device, a hardware failure detection device, a board card hardware register, a board card hardware control module, a signal input interface and a signal output port software failure detection device. The multilevel emergency causing sudden stop of the system can be detected in real time through the switching device, the failure detection device and the like, and a detection result can be announced in time, so that different countermeasures can be taken. Under the situation that the manual interference is not needed, the stability and safety of an entire playing process can be maintained.

The invention belongs to the technical field of open source software reliability models, and particularly relates to an open source software reliability modeling method for introducing faults based ona debugging process. The method comprises the following steps: (1) proposing a model hypothesis; (2) establishing a differential equation; and (3) establishing an open source software fault detectionreliability model. According to the method, on the basis of fully considering that time delay exists between actual open source software fault detection and fault removal, a corresponding open sourcesoftware reliability model is established by considering the situation that faults are possibly introduced when the faults are removed. Due to the fact that the situation that faults are possibly introduced when the faults of the open source software are removed is considered, the established ground open source software reliability model better conforms to the actual fault detection and fault removal change process, and the assumption of establishing the ground open source software reliability model is more reasonable and credible.

A mobile robot software fault diagnosis system based on an artificial immune system, the system is composed of a normal model building module, a software fault detection module, a known software fault diagnosis module, an unknown software fault diagnosis module, a software fault elimination module and a system repair module. The normal model building block utilizes the normal model of the mobile robot software system to build an autologous database. The software fault detection module detects all self and software faults through self database retrieval. A normal model is uniquely determined by the spatiotemporal properties of all normal components in a normal software system. The known software fault diagnosis module identifies known software faults by querying the software fault database. The unknown software fault diagnosis module uses the neural network or example learning mechanism to learn unknown software faults, and memorizes the learning results into the software fault database, and the known software fault diagnosis module identifies such software faults.

The invention provides for software fault detection. A software process tracks its own progress. In the event the timer times out, a handler checks the progress. If the progress meets a fault criterion, a fault response is executed.