Abstract: A split switch structure includes: a single pole N throw switch, where N is a natural number greater than or equal to 1; the single pole N throw switch includes N switch paths, each switch path is switched through turn-on and turn-off of a switching transistor, and devices of the single pole N throw switch are at least arranged on two chips; and pads corresponding to contacts of the single pole N throw switch satisfy isolation requirements in terms of distance. In the split switch structure of the present disclosure, splitting devices of a single pole multi-throw switch onto at least two chips reduces chip area and cost, and isolation is improved through flexible spatial arrangement, thereby achieving both high isolation and low cost, thus making it suitable for large-scale production and application.

Abstract: A model is created of a system to be monitored. Operating states of the monitored system, including steady and transient states, are identified. Faults are injected into the model and the model is used to simulate each of the identified operating states. Results of each simulation are analyzed and used to develop one or more propagation-based fault detection and discrimination strategies that can be used to identify faults in each of the identified operating states. The strategies may further be used to select an optimal set of sensors to assist with fault detection.

Abstract: A multisource volumetric spectral computed tomography imaging device includes an x-ray source array with multiple spatially distributed x-ray focal spots, an x-ray beam collimator with an array of apertures, each confining the radiation from a corresponding x-ray focal spot to illuminate a corresponding segment of an object, a digital area x-ray detector, and a gantry to rotate the x-ray source array and the detector around the object. An electronic control unit activates the radiations from the x-ray focal spots to scan the object multiple times as the gantry rotates around the object. The images are used to reconstruct a volumetric CT image of the object with reduced scattered radiation. For dual energy and multi energy imaging, radiation from each focal spot is filtered by a corresponding spectral filter to optimize its energy spectrum.

Abstract: A model (137) is created of a system (110) to be monitored (805). Operating states of the monitored system, including steady and transient states, are identified. Faults are injected into the model and the model is used to simulate each of the identified operating states (810). Results of each simulation are analyzed and used to develop one or more propagation-based fault detection and discrimination strategies (147) that can be used to identify faults in each of the identified operating states (815). The strategies may further be used to select an optimal set of sensors (155) to assist with fault detection.

Abstract: A model (137) is created of a system (110) to be monitored (805). Operating states of the monitored system, including steady and transient states, are identified. Faults are injected into the model and the model is used to simulate each of the identified operating states (810). Results of each simulation are analyzed and used to develop one or more propagation-based fault detection and discrimination strategies (147) that can be used to identify faults in each of the identified operating states (815). The strategies may further be used to select an optimal set of sensors (155) to assist with fault detection.

Abstract: A method for determining the quality of diffusion welding by means of non-destructive testing comprises the steps of determining a testing method, performing batch testing, establishing a relationship, performing a classification of the mechanical performance data of welded joints, performing a classification of quality levels of different welded interfaces, performing a classification of quality levels of the welded joints, and determining quality levels of the welded joints of to-be-tested workpieces.

Abstract: A multisource volumetric spectral computed tomography imaging device includes an x-ray source array with multiple spatially distributed x-ray focal spots, an x-ray beam collimator with an array of apertures, each confining the radiation from a corresponding x-ray focal spot to illuminate a corresponding segment of an object, a digital area x-ray detector, and a gantry to rotate the x-ray source array and the detector around the object. An electronic control unit activates the radiations from the x-ray focal spots to scan the object multiple times as the gantry rotates around the object. The images are used to reconstruct a volumetric CT image of the object with reduced scattered radiation. For dual energy and multi energy imaging, radiation from each focal spot is filtered by a corresponding spectral filter to optimize its energy spectrum.