5results about How to "Quick prediction" patented technology

The application discloses an engine fault diagnosis method based on a multilevel progressive detection principle, and has the characteristics that the method comprises the following steps: engine timing geometric deviation angle measurement, to complete mechanical layer detection; engine crankshaft and camshaft Hall pulse signal measurement and correction, to complete electrical signal angle layer detection; engine cold test speed-up working condition crankshaft angle domain / frequency domain comprehensive analysis, namely vibration acceleration layer detection; and artificial intelligence fault identification based on big data. The method provided by the application can progressively judge and identify faults through the mechanical layer, the electrical signal angle layer, timing belt tension or vibration frequency and vibration acceleration layer, so that common engine faults in the engine cold test and bench test process can be quickly identified. In the judgment of the vibration acceleration layer, the engine fault is quickly identified and pre-judged by combining the mechanical layer and the electrical signal angle layer and through an artificial intelligence fault judgment algorithm based on big data.

The invention relates to the technical field of semiconductor manufacturing equipment, in particular to a pressure control system of a wafer vertical process furnace. Comprising a process chamber; the gas inlet unit supplies process gas to the process chamber; the exhaust unit comprises a vacuum exhaust loop, a normal pressure / micro-positive pressure exhaust loop and an interlocking mechanism; the vacuum exhaust loop vacuumizes the process chamber to a vacuum or low-pressure state; the normal-pressure / micro-positive-pressure exhaust loop is used for exhausting when the process chamber is in a normal-pressure or micro-positive-pressure state; the interlocking mechanism is used for ensuring that only one loop is conducted with the process chamber; the sensing unit comprises a pressure sensor for monitoring the pressure in the process chamber; and the central control unit selectively conducts the vacuum exhaust loop or the normal pressure / micro-positive pressure exhaust loop through an interlocking mechanism. The pressure control system solves the problems of poor safety, low control precision and insufficient automation degree caused by single function or low integration level of the pressure control system of the wafer process furnace in the prior art.

The application discloses a device positioning method and a vehicle, and belongs to the technical field of communication. Through the technical scheme provided by the embodiment of the application, the cooperative working mechanism of the first Bluetooth antenna and the second Bluetooth antenna is introduced, and the limitation of the traditional scheme is overcome. The first Bluetooth antenna has a large radiation range, ensures that the Bluetooth key device can establish and maintain a communication link at a long distance, thereby realizing rapid prediction of the proximity of the key device, and avoiding delay caused by Bluetooth antenna switching. After determining that the Bluetooth key device is close to the target area, the second Bluetooth antenna is controlled to enter the cooperative working state, and its directional radiation characteristic provides signal gain in the target area. This cooperative receiving mode can simultaneously utilize the differentiated signal characteristics received by the two Bluetooth antennas to accurately determine the position of the Bluetooth key device in the target area.

The embodiment of the application provides a rock burst prevention method and device based on a TBM tunnel and electronic equipment, and belongs to the technical field of tunnel construction. The method comprises the following steps: determining a target rock burst grade of a to-be-tested tunnel according to a preset geological parameter; if the target rock burst grade is a non-rock burst grade, no operation is performed; if the target rock burst grade of the to-be-tested tunnel is a slight rock burst grade, a plurality of steel bars are arranged at an exposed shield of the to-be-tested tunnel; if the target rock burst grade of the to-be-tested tunnel is a medium rock burst grade, a plurality of advance anchor rods are arranged at a working face of the to-be-tested tunnel, and a plurality of steel bars are arranged at the exposed shield of the to-be-tested tunnel, wherein the length of each advance anchor rod is set according to the paragraph length of the slight rock burst grade; and if the target rock burst grade of the to-be-tested tunnel is a strong rock burst grade, drilling operations are performed at the exposed shield and the working face of the to-be-tested tunnel respectively. Through the provided scheme, the accuracy of rock burst prediction is improved, and comprehensive and rapid rock burst risk prediction is realized.

The present application relates to a kind of prediction method and device of recovery efficiency of fractured shale reservoir, belong to the technical field of oil and gas exploration and development, the method includes the following steps: respectively constructing the mathematical model of fluid imbibition position in single organic nanometer hole, single inorganic nanometer hole and single microfracture;Scale upgrading is carried out to single nanometer hole and single microfracture using fractal theory, respectively obtain the total number of pore of nanometer hole and the total number of microfracture of core of fractured shale reservoir;Respectively calculate the imbibition oil production in all nanometer holes and the imbibition oil production in all microfractures;The recovery efficiency in the process of spontaneous imbibition and forced imbibition of fractured shale reservoir is calculated respectively.The prediction method and device of recovery efficiency of fractured shale reservoir disclosed in the present application can simply, quickly and efficiently predict the imbibition oil displacement rate, production and recovery efficiency in the process of shale reservoir fracturing and well killing, and have great significance for realizing effective development of shale reservoir.