11results about How to "Eliminate accidental errors" patented technology

The invention provides an alloy processing machine tool operation monitoring management method based on digital twinning, and the method comprises the steps: firstly constructing a digital twinning model used for monitoring management, and the digital twinning model comprises a physical model and a twinning data model; the physical model comprises a three-way cutting force sensor, a three-way vibration sensor, an acoustic emission sensor, a signal modulator and an alloy machining tool, and the sensors collect three-way cutting force time-domain signals, three-way vibration time-domain signals and acoustic emission signals respectively; the twin data model is used for acquiring real-time monitoring data for monitoring management, and comprises a trained multi-modal spatial-temporal feature fusion network and a tool wear loss prediction module; and the multi-modal spatial-temporal feature fusion network comprehensively obtains residual multi-modal fusion features, and obtains a predicted value of the abrasion loss of the rear tool face of the alloy machining tool through a tool abrasion loss prediction module. According to the method, alloy machining tool feature extraction can be comprehensively carried out, the model recognition stability is high, potential abrasion problems are found in time, and the production efficiency and the alloy quality are improved.

The invention relates to a carrier rocket propellant liquid level measurement filtering method based on volume extrapolation. The method comprises the steps that the current section number of a liquid level sensor is judged; adopting a triangular wave fitting method to calculate the liquid level height of a non-inflection point area; performing inflection point area liquid level height calculation by adopting a volume extrapolation method: if the current section number is an odd number, when the triangular wave voltage is smaller than Umin + deltaV for the first time, or if the current section number is an even number, and when the triangular wave voltage is larger than Umax-deltaV for the first time, performing least square fitting and extrapolating a volume trend line by utilizing the liquid level volume data within the time T0 before the moment, the volume data within the time Tw after the moment are all replaced by the data on the volume trend line, and finally the volume is inversely transformed back to the height value. According to the method, the problem of inflection point distortion is eliminated under the condition that the height calculation precision is not reduced, input information does not need to be externally connected, and the implementation mode is relatively simple.

A method for correcting an elevation error of a micro-seismic positioning system based on roof deep hole blasting vibration comprises the following steps: determining an underground coal and rock mass deep position of pre-construction roof deep hole blasting, confirming construction parameters of actual roof deep hole blasting, confirming actual elevation of blasting excitation vibration, and obtaining theoretical elevation of a micro-seismic system for calculating a blasting event; and calculating a deviation value between the actual blasting seismic source elevation and the theoretically calculated seismic source elevation, when the theoretical elevation is not within the actual seismic source elevation range, judging that the elevation positioning of the micro-seismic monitoring system has an error, correcting the elevation positioning error of the micro-seismic monitoring system, eliminating an accidental error, and obtaining an elevation positioning correction parameter of the micro-seismic monitoring system. According to the method, the error of the micro-seismic monitoring system on the spatial position is corrected, particularly the error is corrected for the elevation of a micro-seismic high-energy event, the high-energy disaster-causing occurrence horizon is accurately obtained, the judgment of the actual occurrence horizon of the high-energy event is realized, and the safe mining of a coal mine is ensured.

The invention discloses a high-precision optical isolator reverse loss detection device, which belongs to the technical field of optical element manufacturing, and comprises an equipment bracket, one side of the bracket is detachably connected with a reverse optical path connecting pipe, and the other side of the bracket is detachably connected with a forward optical path connecting pipe. Notch parts are arranged on the reverse light path connecting pipe and the forward light path connecting pipe, depolarization beam splitting prisms are detachably connected to the position, close to the upper portion, of the forward light path connecting pipe and the position, close to the lower portion, of the reverse light path connecting pipe, moving assemblies are installed on the notch parts, and clamping assemblies are arranged on the moving assemblies. The optical isolator is clamped in the clamping assembly, through the matching design of the forward light path and the reverse light path, cross detection and mutual verification of two groups of data can be achieved through the forward light path and the reverse light path, and accidental errors of a single light path are effectively eliminated.

The utility model relates to the technical field of chemical inspection equipment, and particularly discloses a flow-controllable distillation device, which comprises a condenser pipe, a flask and a distillation flask, a steam inlet of the condenser pipe is connected with the flask and the distillation flask through a steam pipeline, and a flow meter is mounted on the steam pipeline of the distillation flask. Steam in the distillation flask and sample gas in the flask enter a condensation pipe together, and the condensation pipe is connected with a condensation box; according to the distillation device capable of controlling the flow, the flow meter is used for controlling the steam flow, and control is more accurate than control through experience of personnel; accidental errors are eliminated, and the inspection accuracy is improved; condensate water of the refrigerating machine can be recycled, and water resources are saved.

The invention provides a power transmission line tower grounding resistance unwiring-free measurement method and system, and belongs to the technical field of power transmission line operation maintenance and detection, and the method comprises the steps: constructing a tower equivalent loop model, employing a non-contact transformer to synchronously inject a test signal, and collecting multi-path response data, and establishing a multi-parameter complex equation set based on the Kirchhoff voltage law for solving, and finally judging the grounding resistance of the tower according to the order of magnitude relationship between the equivalent impedance and the grounding resistance. According to the invention, through the measurement method without wire releasing and auxiliary electrode bonding, the operation steps are simplified, the working efficiency is improved, personnel are prevented from working in a high-risk environment, and the working safety is improved; meanwhile, the portable design provides effective support for data real-time monitoring, online analysis and operation and maintenance decision on the basis of guaranteeing functionality, and the accuracy, efficiency and safety of power transmission line grounding resistance measurement are comprehensively optimized.

This invention discloses a high-precision optical isolator reverse loss detection device, belonging to the field of optical component manufacturing technology. The device includes an equipment bracket, on one side of which a reverse optical path connecting tube is detachably connected, and on the other side of which a forward optical path connecting tube is detachably connected. Notches are provided on the reverse and forward optical path connecting tubes. Depolarizing beam splitters are detachably connected near the top of the forward optical path connecting tube and near the bottom of the reverse optical path connecting tube. A moving component is installed in the notch, and a clamping component is provided on the moving component. The optical isolator is clamped inside the clamping component. Through the design of the forward and reverse optical paths, cross detection can be achieved by using two sets of optical paths, one forward and one reverse. The two sets of data are mutually verified, effectively eliminating the random errors of a single optical path.

The utility model provides a kind of laboratory liquid quantitative measurement and canning device, comprising: intercommunication quantitative component and switch component;Wherein, the quantitative component, comprising, hollow cylindrical can body (1), the can body (1) bottom is connected with the quantitative component top;Variable capacity adjusting rod (2) is equipped in the can body (1), for adjusting the hollow cavity volume of the can body (1);The switch component, comprising, shell (8), the shell (8) top is connected with the can body (1) bottom;Switch device is equipped in the shell (8), the hollow cavity of the switch device top is communicated with the can body (1), bottom is worn out the shell (8) bottom, for discharging the liquid inside the hollow cavity, the switch device side is worn out the lateral wall of the shell (8), for transporting liquid to the inside of the hollow cavity.

This utility model discloses a testing device for a computer VGA interface, comprising: a video conversion module, the input of which is connected to an external VGA interface to receive analog video signals and convert the analog video signals into HDMI signals; an FPGA module, the input of which is connected to the output of the video conversion module and is used to receive the HDMI signals; the FPGA module has a built-in video loop-out unit, a format conversion unit, a frame buffer, and a CRC error detection unit; an HDMI output interface, the input of which is connected to the output of the video loop-out unit of the FPGA module and is used to connect to an external display device; and a communication interface module, including an asynchronous transmission standard interface and a universal serial bus interface, the communication interface module being electrically connected to the FPGA module and used to receive control commands from a host computer. This utility model is low in cost, accurate, efficient, and can simultaneously integrate video and audio testing functions.

This invention belongs to the field of gas reservoir development technology, specifically relating to a method for constructing a gas channeling identification chart for condensate gas reservoir injection development. The method includes: screening five gas channeling discrimination indicators for production wells during the cyclic gas injection development process of condensate gas reservoirs; performing data standardization and quality control on the five screened gas channeling discrimination indicators to eliminate random errors; constructing a radar chart using the processed five gas channeling discrimination indicators to quantitatively determine the gas channeling stage; screening five gas channeling discrimination indicators for production wells in the current stage, and projecting the obtained gas channeling discrimination indicators onto the gas channeling identification chart to determine the degree of gas channeling in the current stage of production wells. The method provided by this invention can be used for on-site guidance of gas channeling early warning and discrimination in the later stages of condensate gas reservoir injection development, helping to formulate targeted prevention and control strategies. As an effective method for gas channeling early warning and evaluation of the degree of gas channeling in condensate gas reservoir injection development, the method provided by this invention has broad prospects for widespread application.

This invention discloses a method for determining the stability of organic carbon in reservoir sediments based on the coupling relationship between microbial community structure and mineral-organic carbon. Existing technologies often rely on single physicochemical indicators, neglecting differences in geological background and the driving role of microorganisms, leading to biased carbon sink assessments. This invention separates sediments into particulate organic matter and mineral-bound organic matter components, and measures exchangeable cations (Ca). 2+ Mg 2+ Fe 3+ Al 3+ The microbial-mineral coupling coefficient (MMCC) was constructed by analyzing the content and abundance of microbial phyla. Based on the MMCC value and microbial community distribution characteristics, carbon sinks were classified into highly stable karst types (MMCC>1.5), low-stability non-karst types (MMCC<0.5), and transitional types. This method quantifies the difference between the "calcium bridge / carbonate co-precipitation" and "iron-aluminum adsorption" mechanisms for the first time, with significantly higher discrimination accuracy than traditional methods. It is applicable to the carbon sink potential assessment of water bodies with different geological backgrounds, providing a scientific basis for the implementation of the "dual carbon" strategy.