30 results about "Simultaneous equations" patented technology

The invention provides a mountain slope transmission system catenary determining method and device, and the method comprises the steps: obtaining the arrangement parameters of a transmission system on a mountain slope, and the arrangement parameters at least comprise the horizontal distance between two fixed points of the transmission system, the vertical height difference, and the total length of a rope of the transmission system; based on the arrangement parameters, a simultaneous equation with the catenary opening coefficient as a core unknown quantity is established, and the simultaneous equation comprises the arc length constraint of the catenary and the height difference constraint of the two end points at the same time; solving the simultaneous equation to obtain a numerical solution of the catenary opening coefficient; and determining a catenary shape and a core engineering index of the transmission system on the mountain slope under the action of gravity according to the solved catenary opening coefficient. According to the method and the device, the engineering design precision is improved, and material redundancy and adjustment cost caused by shape uncertainty are saved.

The invention discloses a wind power plant current collection system topology design method and system based on an improved genetic algorithm, relates to the technical field of system topology design, and aims to solve the core problems of collaborative optimization of fan grouping and submarine cable connection and accurate matching of current-carrying capacity and cost under high-dimensional constraints. According to the method, a parameter calculation module is combined with a formula to determine the maximum feeder fan number and the number range, a grouping connection module combines polar coordinate grouping with a minimum spanning tree algorithm to construct an initial scheme, a cost modeling module calculates the cost through an exclusive function, and an iterative optimization module dynamically adjusts the grouping and fan number based on an improved genetic algorithm. And the constraint screening module eliminates violation schemes through a penalty formula, and finally generates optimal and suboptimal topological graphs containing core parameters. According to the method, the high-dimensional optimization problem is layered and disassembled, the constraint satisfaction degree and the economical efficiency are considered, the submarine cable investment cost is greatly reduced, the design efficiency and the engineering feasibility are improved, and the method is suitable for topology design of various offshore wind plant current collection systems.

The application discloses a kind of wind farm power collection system topology design method and system based on improved genetic algorithm, it is related to system topology design technical field, to solve the core problem of wind turbine grouping and submarine cable connection collaborative optimization under high-dimensional constraint, accurate matching of load flow and cost.The method determines the maximum number of wind turbines and the number range of feeder by parameter calculation module simultaneous equations, grouping connection module constructs initial scheme by polar grouping combined with minimum spanning tree algorithm, cost modeling module calculates cost by exclusive function, iteration optimization module dynamically adjusts grouping and the number of wind turbines based on improved genetic algorithm, constraint screening module excludes illegal scheme by penalty formula, and finally generates optimal and suboptimal topology graph containing core parameters.The application divides high-dimensional optimization problem into layers, considers constraint satisfaction degree and economy, significantly reduces submarine cable investment cost, improves design efficiency and engineering feasibility, and is suitable for various offshore wind farm power collection system topology design.

This invention discloses a method, system, equipment, and medium for calculating pressure loss in perfluorohexanone (PFH) pipeline networks, relating to the field of computer-aided design technology. The method traverses the component tree of the pipeline network building information model using a three-dimensional geometry engine to form a set of pipeline network features; constructs a directed graph topology representing the flow direction of the pipeline network, calculates potential energy loss, converts local resistance into equivalent length, and constructs a weighted directional topology weight matrix; obtains hydraulic balance under single-phase flow conditions through iterative calculation of node simultaneous equations, and generates the corresponding static pressure distribution results of the pipeline network; recursively calculates the dryness and density changes of the gas-liquid mixture using the equation of state, introduces a two-phase flow friction multiplication factor for nonlinear compensation, outputs a three-dimensional dynamic compensation pressure field model, and performs rendering and digital judgment; this solution solves the problem of low accuracy in pressure loss calculation caused by the inability of existing technologies to accurately simulate the flash evaporation effect of PPHH, thus improving the reliability of pipeline network design.

The present application relates to the field of chemical process simulation, and particularly relates to a simultaneous equation simulation block solving method for process industry. The method comprises the following steps: extracting equations in an activated state and variables in an unfixed state from a chemical process model to form an original equation and variable set to be solved; converting the equation and variable set into a graph data structure reflecting system dependency according to a preset block strategy; using a strongly connected component identification algorithm to traverse the graph data structure to obtain a strongly connected component set, each strongly connected component in the strongly connected component set corresponding to a sub-equation block in the process equation; determining a solving order of the sub-equation blocks according to the dependency of the sub-equation blocks; solving each sub-equation block according to the solving order of the sub-equation blocks; and collecting the solving results of each sub-equation block to obtain a global solution of the complete chemical process model.

The application discloses a low-cost rotor displacement recognition method for an eight-tooth one-pair-pole bearingless permanent-magnet sheet motor, four programmable Hall sensors are sequentially installed on radial stator slots, and the Hall sensors are orthogonally distributed on the radial stator slots in pairs; the application proposes a four-phase Hall solving algorithm based on an extreme decoupling coefficient; firstly, an output signal expression of each Hall element is theoretically derived; secondly, other coefficients are separated through offline rotor edge sticking, and a variation extreme value of a single coefficient is obtained to measure and calculate a Hall signal coefficient, so that the constraint of the coefficient in the Hall signal is solved, and a demodulation process of multiplying a sine and a cosine to obtain the same coefficient proportional displacement information in the original method is cancelled; finally, rotor displacements x and y are solved through simultaneous equations and data summation and difference equations; the application is suitable for an eight-tooth one-pair-pole bearingless two-phase motor, and only four Hall sensors are needed to recognize the displacement, so that the cost is greatly reduced.

The invention relates to a simplified calculation method and device for settlement of a rigid pile composite foundation and a medium. The calculation method is simplified, on the basis of the assumption theory of an equivalent pier body and bilinear frictional resistance, an equivalent pier body model assumes that relative slippage details of pile soil are ignored, but the core of overall bearing and deformation is grasped, static balance analysis can be conducted on the whole pier body according to the theory, and calculation is greatly simplified; on the basis of the hypothesis theory of bilinear frictional resistance, the frictional resistance which is traditionally considered to be in triangular or nonlinear distribution is simplified to be in a distribution mode that the upper portion and the lower portion of the equal sinking face are both constant values, calculation of the axial force of the pile body is made to be linear, and therefore an equilibrium equation can be directly established; complex simultaneous equation solving in a traditional method is avoided, all parameters have clear physical significance and determination methods, and the method is suitable for different types of rigid pile composite foundations and can adapt to different engineering conditions through parameter adjustment.

The application discloses a cable cross-connection grounding system connection state live-line testing device and method. A joint or terminal or grounding box copper bar containing an independent lead is selected as a position for coupling injection and current induction testing, a live-line testing device is installed, loop impedance of any phase branch plus parallel impedance of other two phase branches under two different frequencies is tested and obtained, simultaneous equations are established by using Ohm's law and characteristics that resistance and inductance are irrelevant to frequency, impedance and resistance of each branch are calculated, and whether the grounding system has a connection defect is judged according to the calculated impedance and resistance, so that the electrical connection state of the cable cross-connection grounding system can be live-line detected, and the method is simple, convenient and efficient.

The invention belongs to the technical field of wind power generation, and provides a method, a system and equipment for estimating the effective wind speed of a fan with an unknown Cp curve and a medium. Deducing a pneumatic torque expression based on an extended Kalman filtering algorithm; and establishing simultaneous equations of the relation function of the pneumatic torque and the wind speed and the pneumatic torque expression, and solving a wind speed estimated value by using a Newton iteration method. According to the method, a known Cp curve is not needed, calculation is fast, robustness is high, high precision can be kept even under the complex turbulence working condition, only conventional operation data are needed, and the fan control precision and the power generation efficiency are greatly improved.

The present application relates to a kind of mountainous highway intelligent car anthropomorphism speed and trajectory planning method and device, wherein the method comprises the following steps: obtaining vehicle operating data, road geometry data and environmental data;Data preprocessing;With road geometry data and environmental data as explanatory variable, based on simultaneous equations model, establish theoretical vehicle operating speed and trajectory model;Based on the result of vehicle operating speed and trajectory model, establish anthropomorphism motion planning basic rule;Anthropomorphism motion planning model is constructed;Anthropomorphism motion planning model is corrected, and the behavior that due to driver manually drives vehicle and leads to deviation out of lane is avoided;The output of corrected anthropomorphism motion planning model is used as a kind of soft constraint, for intelligent car motion control module reference, realize anthropomorphism speed and trajectory planning.Compared with prior art, the complexity of driver driving behavior in mountainous highway is considered, more in line with the motion expectation of intelligent car driver.

The invention relates to a tunnel surrounding rock crustal stress rapid determination and verification method based on secant modulus, and belongs to the technical field of geotechnical engineering testing. The method comprises the following steps: firstly, sampling from a drill hole, sampling a directional thick rock core, and drilling cylindrical rock samples in all directions in the thick rock core; then preloading the rock sample for specified time; the method comprises the following steps: performing uniaxial compression on a sample at a higher level, synchronously acquiring axial and radial strain data by using a strain gauge in the compression process, and drawing a stress-strain curve; obtaining a strain value of a corresponding stress increment by using a secant modulus; calculating a strain difference by using a strain difference function to obtain a characteristic SMM curve; determining a normal stress through a strain difference function, establishing a simultaneous equation to solve a stress tensor, and obtaining the size and direction of a principal stress through eigenvalue analysis; the crustal stress measured by the secant modulus method is substituted into the calculated displacement, and degradation correction is carried out by considering the influence of construction disturbance; and comparing the actually measured displacement with a theoretical calculation value for verification.

The application relates to the field of backscattering technology and discloses a channel decoupling and equalization method and system for WiFi backscattering, which comprises the following steps: constructing an equation group based on a reference signal and a backscattering signal to solve a forward channel and a backscattering channel, wherein the equation group comprises 56 equations constructed by using a VHT-LTF field and 64 equations constructed by using a reference symbol; obtaining a matrix M through frequency domain to time domain conversion, time domain modulation and time domain to frequency domain conversion based on the reference symbol and a known tag sequence; solving a particular solution of the forward channel and a particular solution of the backscattering channel by simultaneously solving the equation group and combining the matrix M; and using a double-end channel equalization method to decode tag data through obtained first equalization signals and second equalization signals. The application designs a channel evaluation and equalization method, so that the modulation granularity of the tag can be further reduced, and the system transmission rate is improved.

The invention discloses an olefin conversion operation condition optimization method based on an OCU device mechanism model, and relates to the field of chemical engineering and industrial informatization. According to the method, the whole OCU device is decomposed into a plurality of sub-process models, and a whole-process model is built by using process simulation software. The model is calculated by adopting a simultaneous equation method, and a physical property database based on an SRK state equation is integrated. Model parameters are calibrated through real-time operation data of the device, a convergence environment and the model parameters are adjusted according to heat and material balance, and an accurate OCU device optimization model is established. And the optimization platform performs calculation by combining the optimization model, and provides optimal operation setting reference for operators, so that the improvement of the operation performance of the device is realized.

The embodiment of the invention provides a coupling method and device for a flexible bending wing and a distributed electric propulsion system, computer equipment and a medium, and relates to the technical field of coupling control. The method comprises the following steps that aircraft basic parameters are obtained, and the flexible bending wing and a ducted air inlet are obtained through sensor arrays arranged on the flexible bending wing and the ducted air inlet; collecting flight state data in real time; based on the fan characteristic model, calculating an equivalent jet flow momentum coefficient of the whole wing in the current state; a coupling total lift force model is constructed, the target lift force coefficient and the jet flow momentum coefficient are input into the coupling total lift force model, and a trailing edge camber instruction meeting the lift force requirement is obtained through simultaneous solving; performing dynamic response matching and symmetric consistency constraint processing on the trailing edge camber instruction and the rotating speed instruction of the distributed ducted fan; and performing real-time closed-loop correction on the trailing edge camber and the rotating speed of the distributed ducted fan based on the actual lift coefficient. According to the scheme, through the coupled cooperative control method, the propelling stability under the complex working condition is improved.

This invention discloses a testing device and method for the nanosecond pulse response delay of a metal oxide surge arrester. The device mainly includes a nanosecond pulse generator, a high-voltage power divider, an absorption resistor, the surge arrester under test, and an oscilloscope. The overall structure is simple, the platform size is flexible, and the measurement location is unrestricted. The testing method can accurately obtain the surge arrester's response delay with a single pulse current, avoiding errors caused by multiple pulses generated by the nanosecond pulse generator. Furthermore, this method obtains the wave velocity and attenuation coefficient on the transmission line, and then solves simultaneous equations based on the current waveform measured at the measurement point to derive the nanosecond pulse waveform and the current waveform flowing through the surge arrester. The surge arrester's response delay is quantified using specific formulas, resulting in high-precision calculations and reliable test results.

The invention relates to the technical field of power system simulation, in particular to an electromagnetic transient rapid representation method and system for energy storage equipment in power simulation. According to the method, topology and boundary information of energy storage equipment is acquired, and an internal high-frequency switching process is equivalent to a controlled source, so that topology simplification is realized; mapping a high-dimensional state space to a low-dimensional subspace to obtain a dimensionality reduction state description; and forming a simultaneous equation by associating a port variable with a power grid node variable, solving the simultaneous equation, obtaining a port time domain response, and performing dynamic correction based on a state error. According to the method, the calculation complexity of electromagnetic transient simulation of the energy storage equipment is remarkably reduced on the premise of ensuring the simulation precision.

The invention relates to the technical field of power electronic device testing, in particular to an interelectrode capacitance measuring system for an IGBT (Insulated Gate Bipolar Transistor) and a calibration and calculation method thereof, the measuring system is integrated with a measuring-calibration integrated clamp, a standard load is arranged in the clamp, and impedance error calibration can be performed on a whole measuring channel through a mode switching switch before measurement. Based on the method, a set of mandatory three-step sequential measurement process is established: measurement is completed under three specific physical topologies in sequence, error compensation is performed by using a calibration result, and finally, three independent interelectrode capacitors of the IGBT are accurately solved through simultaneous equations. Therefore, the problems that a related high-precision scheme (a VNA method) is high in cost and difficult to operate, a simple scheme (a traditional LCR method) is low in precision, irregular in process and the like are solved, IGBT interelectrode capacitance measurement close to laboratory precision can be achieved on the premise that engineering practicability and economical efficiency are guaranteed, and high precision, high repeatability and high safety are achieved.

The invention relates to a decision intention estimation method based on different strategy data adaptive inverse reinforcement learning, belongs to the technical field of artificial intelligence and machine learning, solves the problems of too high data sampling requirements and too large calculation burden in the prior art, and comprises the following steps: S1, obtaining expert demonstration data, and obtaining an optimal decision matrix in the expert demonstration data; s2, initializing an algorithm, giving an initial moment and an initial data set, establishing a simultaneous Lyapunov equation set about potential variables, and obtaining parameter estimation and related variable initial values; s3, constructing an adaptive online inverse reinforcement learning algorithm to obtain real-time parameter estimation and related variables; and S4, repeating S3, iterating to obtain parameter estimation and related variables at each online moment, taking the parameter estimation and related variables as an intelligent agent decision-making intention estimation result, and outputting a performance index function parameter matrix flow for describing the intelligent agent decision-making intention in real time.

The present application relates to remote sensing inversion technical field, disclose a kind of coverage inversion method fusing multi-angle model and space-time algorithm, comprising the following steps: extracting near infrared and red band value, calculate normalized difference vegetation index and integrate into multi-angle vegetation index data, using ESTARFM model to obtain basic prediction result by downsizing processing, extract mixed pixel reflectivity variation ratio, combined with moving window method to generate predicted high-resolution image, eliminate porosity by simultaneous equation of pixel two-part formula, component summation formula and Lambert Beer formula to obtain parameter simultaneous equation formula, derive double-angle solution formula by substituting specific angle, set sliding window with target pixel as center, the predicted high-resolution image is substituted into the double-angle solution formula to construct overdetermined equation group, obtain optimal pure vegetation NDVI and optimal pure bare soil NDVI, calculate output final coverage.The present application realizes parameter dynamic extraction, eliminates the interference of vegetation three-dimensional structure, improves inversion accuracy.

The application discloses a sound field calculation method based on coupling of structural dynamic stiffness and acoustic boundary element, relates to the technical field of sound field prediction, and considers coupling of structural dynamic stiffness and acoustic boundary element from a numerical technical implementation means, provides two kinds of ideas, one method is that a plate shell transverse displacement response considering fluid load is obtained through a plate structure dynamic stiffness equation, is taken as input and boundary conditions of acoustic boundary element sound field calculation, and finally sound field analysis results are obtained, the method is direct, simple and clear, and strong in realizability; another method establishes a physical relationship of direct coupling of transverse displacement and acoustic boundary element, namely, simultaneous equations of a forced vibration control equation of transverse displacement of plate shell vibration and a deformation equation in the form of a constant acoustic boundary element matrix are formed, a displacement-sound field coupling equation group is formed, and sound field analysis results are solved.

This invention discloses a rock failure simulation method based on three-dimensional particle dynamics analysis (DDA), relating to the field of rock mechanics. The study domain is discretized into a set of multiple rigid spherical particles, and their initial positions, radii, material properties, and control parameters are recorded. A contact determination scheme is used to determine the spatial positions of contact points between particles, and a distance threshold is used to control the contact activation conditions. Based on the principle of minimum potential energy, stiffness sub-matrices corresponding to four types of springs (normal, shear, torsional, and rolling) and friction force sub-matrices corresponding to frictional forces are generated. These matrices are assembled into a system of simultaneous equations, and the correct contact state is determined using open-closed iteration. During this process, a set of contact states is first predicted, the simultaneous equations are solved, and the solved contact states are updated. If the solved contact states are consistent with the predicted contact states, the iteration converges; otherwise, the updated contact states are used to update the predicted contact states, and this process is repeated until convergence. This solves the problem of maintaining consistent macroscopic mechanical responses at different particle scales.

The invention relates to a Beidou + 5G measurement domain fusion positioning method suitable for an urban canyon scene, and belongs to the technical field of multi-source fusion positioning. According to the invention, a navigation terminal obtains a pseudo-range observation value of each satellite from a Beidou module, and obtains a pseudo-range observation value of each base station from a 5G module; solving a clock correction item by using a pseudo-range observation value and a position relation equation set; correcting the pseudo-range observation value by using the calculated clock correction item to obtain a corrected pseudo-range observation value; and solving the position of the navigation terminal by using the corrected pseudo-range observation value and a position relation equation set. According to the invention, the characteristic that the unmanned / intelligent terminal has Beidou and 5G modules at the same time is utilized, Beidou and 5G observed quantities are fused in a measurement domain, simultaneous equations are established to solve the position of the terminal, and the problem that the precision is poor when Beidou and 5G positioning technologies are independently used in an urban canyon environment is solved.

This invention discloses a method for identifying the geometric error of the B-axis in a five-axis swivel-head CNC machine tool, belonging to the field of CNC machine tool accuracy testing and error compensation technology. The method first establishes a B-axis body coordinate system model, measuring position-independent perpendicularity and angular positioning errors as known parameters. Then, it sequentially executes four measurement modes: B-X, B-Z, B-Y, and B-XY, obtaining the equations for the change in rod length of the ballbar in each direction. By solving the simultaneous equations, it sequentially solves for the three runout errors and three angular errors of the B-axis, completing the identification of all six position-related geometric errors. This invention has advantages such as comprehensive error identification, high measurement efficiency, high identification accuracy, small systematic deviation, adjustable parameters, and strong engineering applicability, and is suitable for the rapid and accurate identification of B-axis geometric errors in various types of five-axis swivel-head CNC machine tools.

This invention discloses a method and related equipment for determining the actual furnace heat load deviation coefficient of a water-cooled wall in an ultra-supercritical Π-type boiler. The water-cooled wall comprises multiple loops divided along the width of the furnace. The method includes: obtaining the working fluid flow rate, outlet pressure, inlet enthalpy, measured outlet steam temperature, and total inlet working fluid flow rate and total inlet enthalpy for each loop; establishing the correlation between the outlet working fluid enthalpy of each loop and the heat load deviation coefficient; establishing a system of simultaneous equations with the heat load deviation coefficient of each loop as unknowns based on the conservation of total mass and total energy; substituting the measured outlet steam temperature and outlet pressure of each loop into a working fluid thermodynamic property database to obtain the measured outlet enthalpy, and then substituting this into the system of simultaneous equations; solving the system of simultaneous equations to obtain the actual furnace heat load deviation coefficient. This method avoids the problems of existing iterative correction methods relying on initial values ​​and unstable convergence by using a reverse analytical solution, and provides stable and reliable solutions under complex operating conditions such as deep peak shaving.

The application discloses a kind of based on MC-RNM and I-TNM algorithm's precision machine tool spindle thermal error acquisition method, comprising the following steps, step 1, using Matlab obtains the rotational speed of machine tool spindle, the current position of machine tool spindle and actual environment temperature;Step 2, according to the rotational speed of machine tool spindle obtained, the current position of machine tool spindle and actual environment temperature, based on MC-RNM algorithm real-time calculation spindle net radiation heat transfer;Step 3, according to the spindle net radiation heat transfer, based on I-TNM algorithm to establish the spindle thermal error analytical model considering radiation heat transfer;Step 4, according to the spindle thermal error analytical model of radiation heat transfer, real-time calculation spindle transient thermal error;It can be real-time read spindle rotational speed, spindle current position, current environment temperature, establish the overall coordinate system and local coordinate system of spindle system, spindle workspace, and based on MC-RNM calculation spindle net radiation heat transfer, based on I-TNM algorithm to establish the spindle thermal error analytical model, iterative solution simultaneous equations solution obtains spindle transient temperature field, node transient temperature value is obtained with the spindle transient thermal error;It improves the prediction accuracy and stability of thermal error model, with strong applicability, robustness good advantage.

The invention discloses a system and a method for measuring a three-dimensional magnetic field by using an integrated micro-ring device, and belongs to the technical field of optical fiber sensing and magnetic field measurement. The system comprises a light source, a transmission straight waveguide, a polarization controller, a 1: 2 type Y waveguide, two sensing micro-rings (built-in magneto-optical waveguides) perpendicular to each other and a photoelectric detector. According to the invention, by using the asymmetry of the magneto-optical waveguide in the horizontal / vertical direction, transverse magnetization respectively changes TE / TM mode propagation constants; the x / y-axis magnetic field and the z / y-axis magnetic field are sensed through the two micro-rings respectively, and a three-dimensional magnetic field is obtained through simultaneous operation. The device is high in integration level, small in size, simple in process and high in environmental adaptability, and has practical value. According to the invention, each micro-ring measuring device is integrated on a single chip, the integration level is relatively high, the size is small, the process is relatively simple, and the method has relatively high environmental adaptability and practical value.

This invention discloses a rapid method for quantitatively determining the concentrations of polyethylene microplastics (PE microplastics) and humic acid in water, belonging to the fields of chemical analysis and environmental pollution detection technology. Addressing the issue of overlapping ultraviolet spectra when PE microplastics and humic acid coexist, this invention employs a dual-wavelength regression equation method. By preparing mixed standard solutions with different concentration ratios and establishing a system of simultaneous equations using multiple linear regression, simultaneous, rapid, and accurate determination of the two substances is achieved. This method requires no physical separation, is unaffected by changes in the proportion of coexisting substances, and is applicable to actual water samples with any concentration ratio. It provides a simple, low-cost, and highly accurate analytical method for monitoring the combined pollution of microplastics and natural organic matter in environmental water bodies.

The invention discloses a bidding method for a load aggregator based on two-dimensional power optimization and related equipment, and relates to the field of electricity markets. The method comprises the following steps: constructing a double-layer model of upper-layer load aggregator bidding optimization and lower-layer retail market operator clearing optimization: an upper layer submits active-reactive simultaneous two-dimensional bidding parameters according to nodes and time periods by taking income maximization as a target; and the lower layer carries out clearing and feeds back a result at the minimum total operation cost under the constraint of a power distribution network structure and operation safety. And the load aggregator performs internal optimization on the flexible resources and updates the bidding, and completes bidding-clearing-feedback-closed loop updating by adopting iterative solution. The method realizes P / Q combined declaration and clearing, improves clearing feasibility and convergence efficiency, reduces voltage out-of-limit and network loss, clarifies reactive power value, improves aggregator income stability, and is suitable for a power distribution retail market containing distributed power supplies and demand response.

The invention discloses an on-line full-detection pressure management system for the overall sealing performance of a pressure cooker. The method comprises the following steps: carrying out constant-current inflation to enable pressure overshoot to generate damped oscillation, and solving an equivalent volume by utilizing a simultaneous equation of an overshoot peak value and an oscillation period; calculating the second-order curvature fidelity Cf and Cflt of the pressure-time curve in a passive attenuation section when the gas source is closed; and 1.15, determining that the product is qualified. The system only comprises a constant flow valve, a single pressure sensor, an electromagnetic valve and an MCU, the detection period is 2.3 seconds, the misjudgment rate is 0.8%, and the hardware cost is 50 yuan / station. According to the invention, through mining pressure signal self-contained information, extremely simple online full detection of zero newly added sensors and zero black box algorithm is realized, technical stacking defects in the prior art are avoided, and detection performance and economical efficiency are both improved in order of magnitude.

This invention discloses a near-infrared sugar detection device and method based on a filter wheel, belonging to the field of sugar component detection equipment. The device includes: a broadband near-infrared light source, a filter switching mechanism, a sample cell, a photoelectric detection unit, a signal processing unit, a control and calculation unit, and a display module. The filter switching mechanism includes a filter wheel and a driving mechanism. The filter wheel is equipped with a narrow-band filter, a baseline filter, and a filterless window. During detection, light source drift correction is first performed through the filterless window, followed by empty cell calibration using air as the medium to obtain reference light intensities for each wavelength. After adding the sugar solution to be tested, the background absorption of water is measured through the baseline filter, and the water absorption ratio is used for conversion and subtraction. Finally, characteristic wavelength signals are acquired through the narrow-band filter, and a system of simultaneous equations is solved to obtain the concentration of each sugar. This invention is low-cost, small in size, and can achieve rapid differentiation and concentration detection of multiple sugars.