35results about How to "Fast and accurate judgment" patented technology

The invention discloses a device and a method for estimating tire pressure in a vehicle, the method for estimating the tire pressure comprises the steps: the FFT (Fast Fourier Transform) is performed on a wheel speed signal to obtain an FFT signal pattern of a resonance frequency band of an FFT signal, the FFT signal pattern saves a PCA (Principal Component Analysis) weighting coefficient to execute the PCA and saves an LDA (Linear Discriminant Analysis) differentiate coefficient to execute LDA, so as to distinguish a plurality of tire pressure states, the method of the device for estimating the tire pressure comprises comprises: the wheel signal is detected by a wheel speed sensor; the FFT is executed to the detected wheel signal; the PCA applying the saved PCA weighting coefficient projects the FFT signal pattern of the resonance frequency band of the FFT signal to a PCA space; the corresponding projected data of the PCA space execute the LDA adopting the saved LDA differentiate coefficient, so as to judge a tire pressure state of the corresponding projected data of the PCA space.

The invention relates to an elevator fault discriminating method, a monitoring system and a computer storage medium. Through collection of elevator running state signals, according to logic combination of fault information, emergent stop signals and elevator locking signals in the elevator running state signals, it is automatically identified whether a fault occurring in an elevator is an elevatorstoppage fault. According to the elevator fault discriminating method, the monitoring system and the computer storage medium, elevator fault information is effectively classified and screened throughthe elevator locking signals and the emergent stop signals, and fault information which a user is interested in is extracted out; moreover, the elevator locking signals and the emergent stop signalsare directly resorted to, content of fault information does not need to be considered, and thus the judging speed is high and judgment is accurate; and after screening of fault information, fault types which the user is interested in can be sent to the user, harassment to the user is reduced, and resources sent are saved.

The invention relates to a method for detecting a steady state and judging an operation condition of a water treatment process in a thermal power plant. The method comprises the steps of (1), collecting sensor data comprising pressure of a water outlet header pipe of a water pump, water inlet flow of a cation bed, water inlet flow of an anion bed, pressure of a cationic exchanger inlet, pressure of an anion exchanger inlet, pressure of a mixed ion exchanger inlet, ion concentration and the like to determine steady state thresholds of the sensors and operation condition switch thresholds; (2), detecting operation condition steady state and judging operation condition stages: 2.(1), calculating and judging whether the process is in a steady state or not according to the steady state thresholds of the sensors of the step (1), performing the step 2.(2) if the process is in unsteady state in judgment; 2.(2), calculating and judging that whether the operation condition switches according to the operation condition switch thresholds of the step (2), performing the step 2.(3) if the operation condition switches in judgment; and 2.(3), calculating Euclidean distance and similarity according to data which is sampled in real time to judge the operation condition stage. The method is capable of accurately judging the steady state and the operation condition switch of the water treatment process, transiting the unsteady state process and monitoring the data of the sensors in real time automatically and dynamically.

The present invention relates to the technical field of grid data visualization, in particular to a grid real-time data visualization display method and system, including a control unit, a detection unit, a model building unit and a visualization unit. In the present invention, by setting an interactive visualization unit, the visualization unit transmits demand instructions to the control unit, so that the control unit controls the model construction unit to construct the corresponding model, thereby effectively ensuring that the system can perform simulations for different requirements. At the same time, the model construction unit Carry out preliminary outage simulation based on the received data to generate a power outage simulation model, and the control unit compares the actual power outage area in the region with the power outage simulation model to determine the accuracy of the forecast simulation and re-build the model according to the judgment results The updating of the unit can gradually increase the simulation accuracy of the system for the power failure simulation model, thereby effectively improving the visualization efficiency of the system of the present invention.

The invention relates to the technical field of civil construction, in particular to a construction method for widening, filling, and solidifying soil for highway inter-turn roadbeds. Bulldozers are used to level the subgrades in each area in turn, and graders are used to level the subgrades in each area in turn; the subgrades in a single area are rolled and it is determined whether the subgrade meets the standards after rolling; Add solidified soil layer by layer; renovate the subgrade surface and slope. After completing the rolling of the single-layer roadbed, the present invention will determine whether the flatness or compaction of the roadbed meets the standard according to the thickness change of the roadbed, and use the corresponding operation according to the judgment result to make the single layer after rolling meet the standard. , effectively improving the filling efficiency for the roadbed.

The invention discloses a rapid detection reagent for formaldehyde in food. The rapid detection reagent is prepared from the following raw materials in parts by weight: 10 to 15 parts of sodium periodate, 1 to 2 parts of calcium hydroxide, 8 to 12 parts of petroleum ether, 3 to 8 parts of methyl dihydrojasmonate, 4 to 8 parts of sodium silicate, 2 to 7 parts of tea polyphenol, 0.1 to 1 part of carboxybenzenesulfonamide, 1 to 3 parts of ferrous nitrate, 2 to 5 parts of succinic acid, 0.1 to 1 part of sodium stearate, 3 to 8 parts of ethylene diamine tetraacetic acid, 1 to 3 parts of zinc sulfite, 0.2 to 2 parts of sodium acetate, 1 to 5 parts of acetylacetone, 10 to 20 parts of anhydrous ethanol and 25 to 70 parts of water. The rapid detection reagent for the formaldehyde in the food, disclosed by the invention, is sensitive to formaldehyde stone powder and can quickly and accurately judge whether the food contains the formaldehyde or not; the rapid detection reagent has the advantagesof high reaction speed, high accuracy rate and good stability.