3results about How to "Avoid Secondary Hazards" patented technology

This application relates to the field of intelligent door and window technology, and provides a method and system for real-time protection and linkage control of intelligent doors and windows. The method includes: when the window sash is closed, after detecting that the current current of the motor driving the window sash exceeds a first preset current threshold, determining that the window sash has encountered a physical obstacle, and acquiring rotation data generated by the window sash's tentative contact with the physical obstacle; determining the type of obstacle based on the rotation data; acquiring environmental parameter information of the room where the window sash is located; determining the risk level of the room based on the environmental parameter information; and determining and executing protective actions based on the risk level and obstacle type. This method can improve the efficiency of door and window control.

This invention provides a water hammer prediction system and device. The invention relates to the field of pipeline fluid transport safety technology. The water hammer prediction system is configured to: acquire static topology and physical attribute information and multi-dimensional real-time operating condition data of the fluid transport system, and pre-calibrate a dynamic simulation model based on the information and data; when a water hammer triggering event is detected, invoke the pre-calibrated dynamic simulation model to perform an initial prediction to generate an initial prediction result, and issue a pre-control command to the first-level protection device based on the initial prediction result; acquire the measured impact index at the first-level protection device and compare it with the initial prediction result to determine the prediction error; and, based on the prediction error, correct the dynamic simulation model in real time, and drive the corrected dynamic simulation model to perform cascade control of the next-level protection device.

This utility model provides an open-type pressure relief lithium battery module. The cover is a C-shaped frame structure with an opening facing downwards. At least one row of grooves is provided on the upper surface of the top plate of the cover. A row of through pressure relief holes is provided on the bottom surface of the grooves. The pressure relief holes correspond one-to-one with the positions of the explosion-proof valves of the battery cells inside the box. A membrane is located in the grooves and covers the upper surface of the pressure relief holes. The membrane has waterproof and breathable functions. When the battery cell experiences thermal runaway, the gas-liquid-solid mixture is ejected from the battery cell explosion-proof valve and then discharged directly upwards through the through holes designed on the top of the cover. This achieves rapid release of the internal pressure of the battery cell over the shortest distance while avoiding contact between the flammable mixture and the internal components of the box, ultimately achieving a thermoelectric separation effect.