4 results about "Test protocol" patented technology

The invention discloses an industrial control protocol difference fuzzy test method and system based on protocol consistency verification. The method comprises the following steps: firstly, based on an official specification document of a target industrial control protocol, constructing a formalized baseline protocol finite-state machine, and generating a consistency verification sequence set covering protocol core logic; secondly, performing consistency testing on a plurality of tested protocol implementation entities, identifying and recording behavior deviation between each entity and the baseline model, and generating inconsistency judgment information; further, a differential fuzzy test case is constructed by utilizing the judgment information to generate an auxiliary vector, a targeted variation strategy is designed, and a final differential fuzzy test case set is generated and optimized; and finally, executing testing in parallel in an isolated virtualization environment, and automatically judging abnormal entities and vulnerability trigger points corresponding to the abnormal entities by performing vectorization processing and similarity analysis on response logs of the entities. According to the method, the problems of target fuzziness, low efficiency and high false alarm rate of an existing fuzzy test method are effectively solved, and the accuracy, the efficiency and the automation level of industrial control protocol security testing are remarkably improved.

This application discloses a method and system for high-frequency PCB environmental reliability testing, relating to the field of data processing technology. The method first acquires the electrical reference parameters of the board under test (BUT), and then collects the full-field surface strain tensor field and spatial temperature distribution field under multi-factor conditions. A three-dimensional thermal stress distribution field is obtained through thermo-mechanical coupling analysis, and the material parameter drift is calculated and determined. When the drift exceeds the limit, the signal path deformation matrix is ​​calculated, and connection point displacement data is extracted to assess its interference with transmission continuity and identify potential fault hazards. Based on this, a comprehensive impact report is generated to optimize the test protocol. Finally, the optimized protocol is verified through iterative simulation, and impedance compensation control parameters for correcting the transmission loss of the BUT are generated. Implementing the technical solution provided in this application can improve the accuracy of high-frequency PCB reliability assessment.

The application discloses a working condition extraction method and device for fuel cell life evaluation, and the method comprises the following steps: determining the range of an idling interval, a large-load running interval and a small-load running interval under a durability test protocol to be extracted, and a large amplitude of variable load and a small amplitude of variable load; based on various parameters to be extracted, counting the start-stop times, idling time, large-load running time, small-load running time and variable load times in the durability test protocol, and calculating the time and times of each working condition to obtain a vehicle working condition spectrum of the durability test protocol. The application provides working condition spectrum data for a "working condition" test method of fuel cell life evaluation.

The invention relates to a reliability evaluation method and system for an atomization module of a humidifier in the technical field of new-generation information, and the method comprises the steps: processing an interaction relation among parameters through employing a preset stress coupling model according to an obtained environment parameter set, and obtaining an accelerated aging path of the atomization module under a simulated multi-stress condition; if the preliminary life prediction value is lower than the target reliability evaluation standard, the influence of the interaction is recalculated by adjusting thermal cycle parameters in simulation, and an optimized acceleration test condition is determined; according to the determined acceleration test protocol, processing the fusion of historical data and newly collected data to obtain quantitative indexes for product quality control, and judging the stability of the indexes under the interaction effect; and if the quantitative index shows that the stability is insufficient, protocol parameters are optimized by adopting a gradient boosting decision tree algorithm, enhanced prediction accuracy is obtained, and rapid prediction of the real failure mode is realized.