4results about How to "Accurate leak detection" patented technology

The embodiment of the invention provides a memory leak detection method and device, equipment and a storage medium, and relates to the technical field of operating systems and performance tuning. The method comprises the following steps: monitoring memory allocation and release operation of a process by adopting a probe program; collecting memory use information of a stack of the process on memory allocation and release operation; through a collaborative caching mechanism of a kernel mode and a user mode, sharing memory use information to the user mode, and analyzing the memory use information in the user mode to obtain a comprehensive hotspot score representing a memory occupation growth trend of a stack; and determining whether the stack has memory leak according to the comprehensive hotspot score. Based on the method, whether the memory leaks or not can be accurately detected under the condition of low performance overhead.

This application discloses a radar-based method and related device for detecting tunnel wall leakage, relating to the field of tunnel engineering operation and maintenance. The method acquires echo signals reflected from the detection area of ​​the tunnel wall at multiple acquisition times; analyzes each echo signal to obtain wall surface state data; compares multiple wall surface state data with pre-acquired wall surface dryness data to obtain state difference values, which can eliminate background interference from the inherent material and structure of the tunnel wall, highlighting abnormal differences caused by leakage, and improving the stability and accuracy of detection; by inputting the state difference values ​​into a pre-constructed leakage discrimination model to determine whether the detection area is leaking, automated identification and judgment can be achieved. It can stably and accurately complete leakage detection in complex environments such as dim lighting, dust, fog, fluctuating temperature and humidity, and changing wind speeds, effectively solving the problems of poor environmental adaptability and low detection accuracy in existing technologies.

This invention discloses an internally charged positive pressure leak detection device for a palladium alloy membrane purifier, comprising an outer shell with a leak detection port and a helium filling port at both ends. The interior of the outer shell is a cavity for accommodating the palladium alloy membrane purifier under test. The inlet of the palladium alloy membrane purifier is connected to the helium filling port, which is used to fill the palladium alloy membrane purifier with helium. The leak detection port is used to connect to a vacuum and leak detection device. This internally charged positive pressure leak detection device actively fills the palladium alloy membrane purifier with helium and sets up a vacuum detection chamber outside the purifier, creating a large differential pressure detection environment with a clear direction that is completely consistent with the actual operating conditions of the palladium alloy membrane purifier. This ensures that any microscopic leak channels that may open under actual working stress can be detected under these conditions, making it suitable for fields such as semiconductors, electronics, and proton exchange membrane fuel cells.

The utility model discloses a blast furnace cooling equipment damage leak detection on-line pressing device, which belongs to the technical field of production and maintenance in the metallurgical industry and comprises a pressure gauge, a pressure buffer tube, a first ball valve, a first variable-diameter tube, a second variable-diameter tube and a metal hose which are sequentially connected. The side wall of the first variable-diameter pipe is connected with a second short section, and the second short section is provided with a second ball valve. Through the combined connection of the variable-diameter pipe and the buffer pipe and the pressure relief design of the second short section, the precise detection of the tiny damage of the blast furnace cooling equipment is realized. The device is simple in structure, low in cost and convenient to operate, the problem that whether equipment is damaged or not cannot be accurately judged through a traditional method is solved, and the stability of blast furnace production is improved.