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585 results about "Industrial site" patented technology

High-speed platform motion parameter self-tuning method based on model identification and equivalent simplification

A high-speed platform motion parameter self-tuning method based on model identification and equivalent simplification is provided, comprising: establishing a test of a motion state of a high-speed platform, identifying model parameters, and optimizing motion parameters of an equivalent simplified model; selecting any motion function from a pre-set parameterized curve, setting initial parameters, and driving the high-speed platform to move under the action of a controller and an actuator; collecting dynamic response information of the platform, calculating dynamic characteristic information of the platform such as stiffness, frequency, damping and the like; establishing a dynamic response equivalent simplified model by using the acquired dynamic characteristic information, and performing the optimization constrained by meeting motion precision and targeting at shorter execution time for the motion parameters in the selected parameterized motion function to obtain the optimum parameters. The method of the present invention gives consideration to the dynamic characteristic requirement of the platform and the comprehensive requirement of the parameter identification and optimization on the industrial site, facilitates the implementation of an algorithm in a motion control card, and is suitable for rapidly acquiring the optimum motion parameters of the actual high-speed platform on site.
Owner:GUANGDONG UNIV OF TECH

Real-time three-dimensional presentation system based on distributed sensing network

InactiveCN110320873AReal-time fast running statusAccurately grasp the running statusNetwork topologiesWireless network protocolsInformation processingPhysical space
The invention provides a real-time three-dimensional presentation system based on a distributed sensing network. The real-time three-dimensional presentation system comprises a physical space, an information processing layer and a virtual space, wherein the physical space is used for acquiring factory data, and transmitting the factory data to the information processing layer; the information processing layer is used for receiving the factory data, performing preprocessing and analytical calculation on the received factory data by a data pool in order to obtain processed factory data, and transmitting the processed factory data to the virtual space at the same time; and the virtual space is used for receiving the processed factory data, and performing modeling and scene reduction on the processed factory data through digital twin software in order to build a twin digital model of an industrial site. The real-time three-dimensional presentation system has the beneficial effects that thetechnical scheme is oriented to the global control of a factory, so that a user can rapidly and accurately comprehend the running state of equipment on the site in real time; the production process of an actual factory is controlled through a visual interaction interface; and equipment exceptions can be controlled and investigated immediately.
Owner:武汉魅客科技有限公司

Optimal deployment method of large-scale industrial wireless sensor network based on differential evolution algorithm

The invention discloses an optimal deployment method of a large-scale industrial wireless sensor network based on differential evolution algorithm, which ensures the system reliability through carrying out optimization deployment on nodes, and relates to two fields of industrial wireless sensor network and intelligent computation. The method comprises the following steps of: carrying out automatic coordination on spaces according to actual spaces of industrial sites, obstacles, wireless sensor power and accurate requirement; and using the total number of nodes and minimum load standard difference of cluster heads as targets, wherein a node deployment model is established for restriction conditions based on the redundancy requirement, '1' represents arrangement of the cluster heads corresponding to mesh points, and '0' represents no arrangement. The invention provides a new binary differential evolution algorithm for optimizing and solving the model. By using a new probability prediction operator, the population is updated by a generated binary variation individual. The method can ensure the system reliability, and can reduce the construction cost of the system at the same time, balances the system energy consumption and prolongs the network life cycle through the optimization deployment of the nodes.
Owner:SHANGHAI UNIV

Locomotive position monitoring and safety controlling device based on track circuit and control method thereof

The invention relates to a locomotive position monitoring and safety controlling device based on a track circuit and a control method thereof. The device comprises a fixed device and a vehicle-mounted device. The fixed device comprises a communication server, a centralized traffic control main machine, a data radio station base station, a global position system (GPS) time service device and a computer interlock system. The vehicle-mounted device comprises a safety control main machine, a vehicle-mounted data radio station, a vehicle-mounted GPS time service device, a display, an alarm voice box, a braking device and a sensor. Based on the devices and a current industrial site computer interlock system, the locomotive position monitoring and safety controlling device based on the track circuit and the control method thereof achieve real-time calculation for an accurate position where a locomotive runs on a railway through utilizing the occupied and idle time of the track circuit and according to the collected running speed of the locomotive, can predict whether the locomotive runs on the basis of observing regulations according to the position and by referring to the conditions of a signal machine, a track switch and other signal devices, and carries out early warning and braking before violation of the regulations. Accordingly, the purpose of guaranteeing safe driving is achieved.
Owner:HEFEI GOCOM INFORMATION &TECH CO LTD

Electronic die cutting material defect detecting implementation method based on machine vision

The invention discloses an electronic die cutting material defect detecting implementation method based on machine vision. The method comprises the following steps of (a) loading a detection template; (b) transferring a detection object; (c) monitoring through a sensor; (d) capturing an image; (e) identifying an object; (f) processing the image; (g) carrying out binarization processing; (h) carrying out data statistics and detection analysis. The method adopts a non-contact optical sensor system, and adopts a machine to replace human eyes to measure and judge, a system utilizes a CCD (Charge Coupled Device) camera for capturing the image of an objective measuring object, and information such as pixel distribution, brightness and color of the image of the objective measuring object is converted into digital image signals; a project control system operates the signals to extract the characteristics of the measuring object; finally, field equipment is controlled to act according to tolerance and other condition output results so as to meet the core demands on on-line detection of product defects and dimension measurement, so that the measurement precision, the measurement speed, and the reliability under an industrial site environment can be ensured.
Owner:HANGZHOU BYTE INFORMATION TECH CO LTD

Method for extracting rim ultrasonic flaw detection signal on the basis of wavelet transformation

The invention discloses a method for extracting rim ultrasonic flaw detection signals on the basis of wavelet transformation, and particularly relates to an effective signal identifying method provided aiming at complex discrete signals collected by an online automatic flaw detection device for a locomotive wheel on an industrial site. The method mainly comprises the following steps of loading collected initial data, carrying out wavelet multi-resolution analysis to original signals, carrying out threshold value processing to each layer coefficient obtained after the wavelet transformation, and then inversely transforming wavelet coefficient to reconstruct signals. After the denoising is accomplished, the effective signals can extract positive detection enveloping curves so as to read flaw detection reports to be displayed in a user interface. Compared with the traditional digital filter in the aspect of extracting effective signals, the method has the advantages that the loss of an echo peak value is small, thus the defect detection rate is greatly enhanced, and the false dismissal possibility is avoided; and the denoising effect is obvious, and the effective signals are smooth, thus pulse signals can be effectively extracted from high-frequency noise, so as to avoid the possibility of false detection.
Owner:NANJING TYCHO INFORMATION TECH

Communication resource allocation method of wireless sensor network

The invention discloses a communication resource allocation method of a wireless sensor network. The method includes the first step of network layering, wherein layer numbers are determined by wireless equipment according to the hop distance between the wireless equipment and a wireless concentrator, and meanwhile the layer numbers are dynamically maintained, the second step of time slot allocation, wherein time slot resources in a superframe in the network are allocated in layer, communication initiated in different layers has access to the network in a time division multiple access mode, and communication launched by nodes on the same layer has access to the network in a competitive mode based on carrier sense, and the third step of wireless channel allocation, wherein the different layers can repeatedly use the time slot resources of bay layers on different wireless channels to achieve concurrence access of the difference wireless channels at the same time. The communication resource allocation method can conveniently and effectively achieve the aims of building of a large-scale low-power-consumption multi-hop network and low-power-consumption access of large-scale wireless nodes, can meet application requirements of the wireless sensor network in the field, outdoors, industrial sites and other environments, and provides high-quality efficient wireless sensor network service for users.
Owner:SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN +1

Automatic power interruption and re-supply relay for an electric power line

The present invention provides a digital automatic power interruption and re-supply relay for performing detection and comparing operation to inform a state of an accident with voice and numerals and automatically operating a connected relay to interrupt power when there occur abnormal changes such as interruption of electric power, open-phase, anomalous voltage, unbalanced voltage, negative-phase, overcurrent, and electric leakage in a power transmit and supply line of high and low voltage or special high voltage and high (low) voltage and, after compensating for the accident, for automatically re-supplying the power. The automatic power interruption and re-supply relay for an electric power line comprises: an anomalous voltage detector coupled to three phase buses for detecting unbalanced voltage and anomalous voltage of three phases; a phase detector for detecting an open-phase, negative-phase, and interruption of electric power; an overcurrent detector for detecting overcurrent on each electric power line; a zero current detector for detecting zero current on each electric power line; a breakdown detector for detecting an anomalous state of relays installed on the electric power lines and machinery installed in an industrial site; and a central processing unit (CPU) implemented with a microprocessor for comparing and analyzing information from the detectors with preselected reference values and determining and processing the anomalous state.
Owner:DIGITAL KOREA

Method for simultaneous measurement of high-temperature gas two-dimensional transient temperature field and concentration field

The invention discloses a method combining hyper-spectrum and wavelength modulation for simultaneous measurement of high-temperature gas two-dimensional transient temperature field and concentration field. The method includes: arranging a laser array in a to-be-measured high-temperature area, and conducting hyperspectral scanning on the to-be-measured area to obtain water vapor absorption spectral line information, and carrying out demodulation with a digital phase lock technology to obtain each harmonic signal, then conducting background deduction first harmonic normalization processing, extracting the maximum amplitude value of the signal to measure regional temperature field and water vapor concentration field, and during measuring, conducting grid discretization treatment on the to-be-measured area, arranging laser beam at each row and each column of the grid to conduct broad spectrum scanning on the characteristic spectral line of the to-be-measured gas under a wavelength modulation mode, and using intelligent optimization algorithm to realize inversion of the temperature field and gas concentration field. The measurement method provided by the invention combines hyper-spectrum and wavelength modulation spectroscopy technologies, and is especially suitable for monitoring of high-temperature gas two-dimensional temperature field and concentration field on harsh industrial sites.
Owner:SOUTHEAST UNIV

Numerical control machine processing online measurement method

InactiveCN102126162AImprove processing and inspection efficiencyReduce distortionMeasurement/indication equipmentsNumerical controlCloud data
The invention discloses a numerical control machine processing online measurement method. The method can realize online measurement of large workpieces. A binocular stereo vision measurement system is combined with a numerical control machine to complete integral measurement of the large workpieces under the traction of the numerical control machine. The method comprises the following steps of: calibrating internal and external parameters of a camera, and combining the measurement system and the numerical control machine; performing translation calibration and rotary calibration to calibrate direction vectors of X-axis and Y-axis of the numerical control machine and rotary matrix R and translation vector T after the measurement system rotates; dragging the measurement system to move by the numerical control machine to perform single view field scanning till traversing all surfaces of a measured workpiece; and finally, performing integral joint according to all view field point cloud data and the reading of a main shaft of the numerical control machine so as to complete integral measurement of the workpiece. The method has the characteristics of flexible use, convenience, high precision and the like, and can be used for online measurement of the large workpieces on an industrial site.
Owner:BEIHANG UNIV

Polypropylene melt index predicating method based on multiple priori knowledge mixed model

ActiveCN102609593AEffective waveform characteristicsExtract waveform featuresSpecial data processing applicationsAugmented lagrange multiplierLoop control
The invention discloses a polypropylene melt index predicating method based on a multiple priori knowledge mixed model, which fully explores and utilizes priori knowledge of a polypropylene industrial site, and is used for organically integrating various priori knowledge, embedding the priori knowledge into a multilayer perceptron neural network in a non-linear equality constraint form, and optimizing a network weight number by means of a particle swarm optimization algorithm based on an augmented Lagrange multiplier constraint processing mechanism. Based on the multiple priori knowledge neural network model, the multiple priori knowledge neural network model is organically integrated with a polypropylene melt index simplification mechanism model into a harmonic average mixed soft-measuring model. The multiple priori knowledge mixed soft-measuring modeling method has good fitting prediction ability, and is capable of enhancing model extrapolation capacity and realizing good unity of model extrapolation and prediction accuracy of polypropylene melt indexes. Besides, the method is capable of avoiding zero gain and gain inversion and guaranteeing safety in practical polypropylene melt index quality closed-loop control application.
Owner:ZHEJIANG UNIV
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