6results about How to "Reliable reflection" patented technology

The application relates to the technical field of electrical equipment state monitoring, and discloses a capacitor type transformer bushing dampness monitoring method and system. The method comprises the following steps: obtaining an initial monitoring data stream from a monitoring node arranged on a transformer bushing; performing feature extraction based on time evolution analysis on the data stream to obtain a preliminary humidity response sequence, a preliminary temperature response sequence and a potential disturbance identification sequence; performing relevance verification on the humidity and temperature sequences, and calculating the coupling influence degree of the disturbance identification sequence on the humidity and temperature sequences; constructing a dynamic probability response matrix according to the verification result and the coupling influence degree, and deducing a dampness evaluation index; and implementing multi-level signal correction on the initial monitoring data stream according to the index, and analyzing core humidity components and core temperature components reflecting a dampness progress. The application can separate dampness signals from temperature and disturbance effects, and realizes dynamic and accurate evaluation of the dampness state of the transformer bushing.

According to the dynamic threshold value method and system based on the median and absolute median deviation, the median is used for replacing the average value, and compared with the average value, the median is not sensitive to an extreme value, so that the influence of noise data on a result can be effectively reduced, and the set threshold value is more stable and reliable; the improved absolute median deviation is used for replacing the standard deviation, so that the insensitivity of the median to an abnormal value is kept, and for a data set in non-normal distribution, more stable dispersion estimation is provided; besides, a dynamically adjusted threshold value coefficient is designed, the threshold value is automatically adjusted according to the characteristics of a data set, it is ensured that the change trend of data can be more sensitively captured, and meanwhile the phenomenon of false alarm or missing alarm caused by improper setting of a fixed threshold value is avoided. After the method is adopted, the short-term fluctuation and the long-term trend of the data can be reflected more accurately, and a more reliable basis is provided for decision makers.

The invention discloses a machine learning privacy auditing method and system in a trusted execution environment, and belongs to the technical field of machine learning. The method comprises the steps of uploading a private data set to a remote machine learning service deployed in a trusted execution environment to train a target model, and obtaining measurement information of private data in each training round of the target model; synthesizing the measurement information in each training round to generate a measurement sequence of a plurality of training rounds; extracting dynamic characteristics of the measurement sequence; performing classification based on the dynamic features to obtain member relationship prediction results of the private data in a plurality of training rounds; and determining whether to continue training, suspend training or exit training according to a member relationship prediction result in the plurality of training rounds. According to the method, a privacy risk measurement and auditing mechanism which is fine in granularity, low in overhead and capable of being dynamically evaluated can be realized.

This invention belongs to the field of analytical detection and probes, specifically relating to an activated reactive oxygen species (ROS) fluorescence lifetime probe and its construction method. The probe uses 1-hexylheptamethylaluminol dye as the target recognition unit and energy acceptor, and lanthanide nanoparticles as the energy donor. The energy acceptor and energy donor are connected by an amphiphilic polymer to construct a fluorescence resonance energy transfer (FRET) system, which shortens the fluorescence lifetime of the lanthanide nanoparticles. When the target analyte ROS is present, the 1-hexylheptamethylaluminol dye recognizes the target analyte, thereby disrupting the FRET and restoring the fluorescence lifetime of the lanthanide nanoparticles, thus enabling the detection of ROS. The activated ROS fluorescence lifetime probe constructed in this invention introduces a 1-hexylheptamethylaluminol dye with a specific structure as an energy acceptor, effectively solving the problem of insufficient energy acceptors in existing fluorescence lifetime probes by indirectly regulating lifetime, and providing a new idea and strategy for the design and construction of near-infrared II fluorescence lifetime probes.

The present application relates to the technical field of fracturing engineering safety monitoring and intelligent early warning, and specifically relates to a fracturing construction monitoring and early warning system and method, which comprises: obtaining an initialized equivalent system resistance and a flow state correction index; constructing a reference physical model; calculating a theoretical pressure value; calculating a deviation index; in response to the deviation index being greater than a preset dynamic judgment threshold, triggering geological state inversion; in response to the deviation index being less than or equal to the dynamic judgment threshold, returning to execute the step of real-time collection of a current real-time pressure value and a current real-time displacement value of a high-pressure grouting pump; inversely solving to obtain an updated equivalent system resistance; calculating to obtain a risk index; generating a hierarchical early warning and decision instruction; and in response to an early warning event confirmation, updating the initialized equivalent system resistance in the reference physical model to the updated equivalent system resistance; the present application realizes the automation and intelligentization of early warning and decision making, ensures construction safety and improves engineering quality.

A kind of foot pressure sensor, including the sole plate for being connected with the robot sole, the sensing mechanism for sensing pressure change is arranged on the sole plate, further including connecting plate, the connecting plate is vertically fixed on sole plate, the sensing mechanism is fixed on connecting plate and the sensing mechanism is perpendicular to connecting plate.The beneficial effects of the utility model are: by setting connecting plate vertically fixed on sole plate and installing sensing mechanism thereon, avoid the zero drift problem caused by the deformation or vibration of sole plate when sensing mechanism directly contacts sole plate, to significantly improve the accuracy and stability of pressure detection.