5results about How to "Improve sweeping efficiency" patented technology

A multi-channel vibrating-wire strain gauge low-voltage frequency sweep detection method belongs to the technical field of vibrating-wire strain gauges and is designed to solve the problems of complex low-voltage frequency sweep control and poor stability and accuracy. The present invention uses the frequency value obtained in the previous frequency sweep as the initial value of this frequency sweep, so that the frequency sweep process can start searching from a position closer to the resonant frequency, reducing unnecessary frequency scanning ranges. At the same time, based on a dynamic adjustment strategy of the phase difference change rate, it is possible to quickly determine the relationship between the excitation frequency and the resonant frequency, and flexibly adjust the step size according to the situation, greatly accelerating the speed of approaching the resonant frequency. Compared with the traditional low-voltage frequency sweep method, the present invention effectively reduces the frequency sweep time, improves the frequency sweep efficiency, and can more quickly obtain accurate frequency measurement results. The method of sorting and taking the middle value and calculating the data stability percentage are used to determine the validity of the frequency value, further improving the stability and accuracy of the measurement results.

The invention discloses a multi-channel vibrating wire strain gauge low-voltage sweep frequency detection method, belongs to the technical field of vibrating wire strain gauges, and aims to solve the problems of complex low-voltage sweep frequency control and poor stability and accuracy. According to the method, the frequency value obtained by last frequency sweeping is used as the initial value of current frequency sweeping, so that the frequency sweeping process can start searching from the position closer to the resonant frequency, the unnecessary frequency scanning range is reduced, meanwhile, the relation between the excitation frequency and the resonant frequency can be rapidly judged based on the dynamic adjustment strategy of the phase difference change rate, and the accuracy of frequency sweeping is improved. Compared with a traditional low-voltage frequency sweep method, the method has the advantages that the frequency sweep time is effectively shortened, the frequency sweep efficiency is improved, an accurate frequency measurement result can be obtained more quickly, and the method is suitable for popularization and application. And the validity of the frequency value is judged by adopting a method of taking an intermediate value through sorting and calculating the data stability percentage, so that the stability and the accuracy of a measurement result are further improved.

The invention discloses a polymer and application thereof. The invention provides a polymer. Raw materials of the polymer comprise a monomer solution, a cosolvent, a reducing agent and an initiator, the monomer solution is prepared from 2-acrylamide-2-methylpropanesulfonic acid, vinyl acetate, vinylpyrrolidone and acrylamide or dimethylamino propyl acrylamide; the mass concentration of the 2-acrylamide-2-methylpropanesulfonic acid in the monomer solution is 5 to 12.3 wt%, the mass concentration of the vinyl acetate in the monomer solution is 4 to 8.6 wt%, the mass concentration of the vinylpyrrolidone in the monomer solution is 0 to 2.8 wt%, the mass concentration of the acrylamide or dimethylamino propyl acrylamide in the monomer solution is 3 to 9.7 wt%, and the balance is water. The polymer provided by the invention enhances the shear resistance of CO2 / water foam, and at the same time significantly improves the recovery rate of foam flooding.

This utility model discloses an associated gas power generation tail gas reinjection system, including a gas-liquid mixer connected to a tail gas outlet pipe and a liquid-liquid mixer. The liquid-liquid mixer is connected to the bottom of an oil well produced water storage tank and an additive storage tank via pipelines. A compressor and a gas-liquid distribution mechanism are sequentially connected to the outlet of the gas-liquid mixer. The gas-liquid distribution mechanism includes a main distribution pipe connected to the compressor outlet, with multiple branch distribution pipes connected to it. The outlets of the branch distribution pipes are connected to the injection well. This utility model provides an associated gas power generation tail gas reinjection system that can utilize associated gas power generation tail gas to increase production, reduce the gas injection cost for oilfield production enhancement, and achieve synergistic reinjection of power generation tail gas and oil well produced water, thereby improving sweep efficiency.

The application relates to the technical field of automatic navigation, and provides an automatic navigation control method and system of an unmanned sweeper. The method comprises the following steps: obtaining a historical monitoring video of a to-be-cleaned area, generating an initial cleaning path of the to-be-cleaned area based on the historical monitoring video, and predicting a cleaning time period corresponding to the initial cleaning path; obtaining multi-source data information of a target area, and constructing a dynamic environment semantic map sequence corresponding to the to-be-cleaned area in the cleaning time period based on the multi-source data information; wherein the to-be-cleaned area is contained in the target area; performing optimization processing on the initial cleaning path based on the dynamic environment semantic map sequence to obtain a target cleaning path; and controlling the sweeper to perform a cleaning task based on the target cleaning path. The method helps to improve the adaptability of the sweeper in a complex environment.