3results about How to "Improve alarm reliability" patented technology

The application provides a gas alarm method and device based on a false alarm feature library, and a medium. First, multi-source gas monitoring data is acquired. Then, according to the multi-source gas monitoring data, a target feature vector of gas monitoring is extracted. Finally, according to the target feature vector and a false alarm feature library established in advance, a gas monitoring result is determined. The false alarm feature library is used to record feature changes caused by non-gas substances. By using the false alarm feature library, the application records feature information of various non-gas substances, realizes accurate differentiation between real gas leakage and non-gas interference, avoids invalid alarms caused by non-gas factors such as oil smoke, alcohol evaporation and environmental interference, and improves alarm reliability.

The utility model relates to a modular monitoring equipment with temperature and humidity and smoke alarm function, including installation base, casing frame and monitoring module, the installation base is circular structure, and the even installation seat is installed on the installation base, and the casing frame is fixedly installed in the installation base lower extreme, and the casing frame inside is installed with monitoring module, and the monitoring module is used for monitoring temperature and humidity and smoke, the utility model discloses the modular layout of main control circuit, temperature and humidity sensor, smoke sensor, combines the design of special heat conduction hole and heat conduction sheet, establishes independent efficient radiating path for the electronic component of heating, and the circuit heat source is isolated with temperature sensor, effectively avoids the'heat pollution'problem caused by the equipment own work heat, ensures the authenticity and accuracy of temperature monitoring result.

The present application relates to a kind of fault diagnosis method, system, equipment and medium based on rolling mill vibration signal, and the synchronous data stream of unified time stamp is generated by the fault diagnosis method through multi-source signal synchronous acquisition and time base alignment, process parameters and vibration signal monitoring isolated problem are solved;Dynamic trigger acquisition and hierarchical storage strategy is used, and according to equipment operating state, abstract feature package and original waveform package are generated, and full-time period original data storage pressure is significantly reduced;Precise identification of fault events is achieved based on the joint determination mechanism of spectral peak and process parameter change rate, effectively suppressing false alarms in conditions such as roll change speed-up;Finally, predictive maintenance decisions are made through typical fault data migration and residual life prediction models. While ensuring the accuracy of fault identification, this method optimizes storage resources and improves operational efficiency.