2results about How to "Avoid Secondary Hazards" patented technology

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 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.