5results about How to "Improve alarm reliability" patented technology

The utility model discloses a liquid cooling energy storage cabinet, and belongs to the technical field of energy storage cabinets. The technical problem of how to improve the safety performance of the liquid cooling energy storage cabinet is solved. According to the technical scheme, a water immersion sensor is arranged at the bottom of a cabinet body and connected with a signal judgment module, the signal judgment module is connected with a controller, the controller is connected with an alarm, the water immersion sensor outputs an induction signal when detecting that the water level reaches a detected alarm value, and the signal judgment module receives the induction signal and sends the alarm to the alarm. The duration of the sensing signal is judged, and if the duration of the sensing signal is larger than a preset duration threshold value, a true signal is output; if the sensing signal is smaller than or equal to a preset duration threshold value, a false signal is output, the controller controls the alarm to whistle and give an alarm when receiving the true signal, and the controller controls the alarm to be standby when receiving the false signal, and the method has the advantages that the alarm is given when the accumulated water is too high, and the judgment reliability is effectively improved.

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 battery management system and battery equipment, if an over-limit alarm circuit detects that the temperature of a to-be-monitored battery cell exceeds the limit based on the temperature of the battery cell, a first signal is output to indicate that the temperature of the to-be-monitored battery cell exceeds the limit; and if the fault alarm circuit detects that the temperature monitoring circuit breaks down based on the cell temperature, a second signal is output to indicate that the temperature monitoring circuit breaks down. According to the scheme, the temperature monitoring circuit can be monitored through the fault alarm circuit while the temperature of the to-be-monitored battery cell is monitored through the temperature monitoring circuit, so that identification can be carried out when the temperature of the to-be-monitored battery cell exceeds the limit, and indication can be carried out when the temperature monitoring circuit breaks down. Therefore, the fault of the temperature monitoring circuit can be found in time, the condition of temperature over-limit false alarm caused by the fault of the temperature monitoring circuit is relieved, and the temperature monitoring accuracy of the battery cell is improved.

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.