30results about How to "Strong certainty" patented technology

The invention discloses a tree network-based multistage server networking communication method which can be applied to a video conference system. Forwarding servers are deployed according to conference participant distribution and network bandwidth condition; stage classification and code management are carried out on each server; a sending end sends data to a server (S10), the server (S10) distributes the data to a receiving end, and at the same time forwards the data to an upper-stage node server (S0) and forwards the data to a plurality of lower-stage node servers (S200, S201); and the lowest-stage node servers directly distribute the data to the receiving ends connected with the lowest-stage node servers. According to the tree network-based multistage server networking communication method, the problem of poor intercommunication among internet operators can be solved, and the method can be better adaptive to a physical network structure of an enterprise private network.

The invention provides a pavement deflection full-field laser detection method and system. The method comprises the following steps: emitting a sector laser beam to a pavement to be measured, and forming a laser marking line which passes through a loading point of the pavement to be measured; providing an image acquisition control signal for a charge coupled device (CCD) image acquisition device, and controlling the image acquisition device to acquire a laser marking line image, wherein the operation comprises two-time image acquisition; acquiring two laser marking line images under two conditions that a standard load is loaded on the loading point and the standard load is unloaded from the loading point; transmitting the laser marking line image acquired by the CCD image acquisition device to a computer image information processing system in a wired or wireless mode; and performing image information differential interference processing through the computer image information processing system, thus acquiring image data of a deflection basin. According to the detection system and method provided by the invention, the pavement deflection is detected in a non-contact full-field mode, the distance between a supporting point and a measuring point is large enough, and a measuring basis is reasonably selected.

The invention discloses a direct memory access (DMA) sending method, which comprises the following steps of: 301, according to an application layer, determining the length and number of data packets which are sent in each period; 302, creating a descriptor for each data packet; 303, judging whether the descriptor is the first descriptor; 304, regarding the current descriptors as the head and tail of a new descriptor queue; 305, resetting a RUN bit in a context control register; 306, according to an active bit in the context control register, checking a result of the step 305; 307, writing the addresses of the descriptors into a link layer command pointer register; 308, setting the RUN bit in the context control register as 1; 309, judging whether sending of N data packets is finished; 310, reserving DMA sending descriptors in a centralized mode; and 311 to 314. By adoption of the DMA sending method, a plurality of data packets can be continuously sent, and transmission of high-capacity data is realized.

The invention discloses a wireless communication terminal positioning method. A movable positioning device is used for positioning a target device; the movable positioning device measures the sum of time for propagating a signal from a base station to the target device and time for propagating the signal from the target device to the positioning device; an elliptic line with the position, where the base station and the positioning device are located, as the focus is determined; when a downlink signal and an upper uplink signal which are detected by the target device and the positioning device respectively are directly propagated, it is considered that the target device is on the elliptic line; when the downlink signal and the upper uplink signal which are detected by the target device and the positioning device respectively are not directly propagated, it is considered that the target device is located in the elliptic line; by means of multiple times of measurement, the intersection point of previous ellipses is used as the preferential positioning position for searching for the target device, whether position determining conditions are met or not is measured, and finally the position of the target device is determined. The wireless communication terminal positioning method has the advantage of being high in positioning precision and positioning efficiency.

The invention discloses a click reaction based preparation method and use of a triazole singly-bonded fully-substituted cyclodextrin silica gel chiral fixed phase. In the method, the triazole singly-bonded fully-substituted cyclodextrin silica gel chiral fixed phase with high chemical stability is prepared by the selective azidation of the position 6 of cyclodextrin and full substitution and alkynylation of silica gel, by using a newly developed catalyst and by a click reaction, and the structural design of cyclodextrin is enriched. The triazole singly-bonded fully-substituted cyclodextrin silica gel chiral fixed phase demonstrates high chiral resolution capacity for amino acid and acidic and neutral racemate medicines and is expected to be used in field of medicine chiral resolution of various chromatographic techniques as a chiral fixed phase.

The invention discloses a PCB test method for a CAN bus body controller. A CAN bus test device is employed, an industrial personal computer is connected with an MCU of a BCM via a CAN bus, a storage self-diagnosis code is marked out at a storage area of the MCU of the BCM, the industrial personal computer controls the MCU of the BCM to perform self-diagnosis detection via the CAN bus as a host computer PC, the MCU reads all input port initial states, input port short circuit states, and diagnosis data capable of reading back and transmits the states and the data to the host computer PC for determination, synchronous signals are sent to a non-read-back output data port via the CAN bus and an AI module, data acquisition is realized via the AI module, the data is detected and transmitted to the host computer PC for determination, master control of the signal output of a DO module is realized via the CAN bus by the host computer PC, the detection of an input port of the BCM is conducted by the MCU, and forced output AI module signal detection of an output port is realized via master control of the MCU through the CAN bus by the host computer PC.

The invention relates to a concrete slump inference method based on a mix proportion and raw material performance. According to the method, the accumulation gap condition of sandstone, the sandstone proportion, the mucilage flowing property, the mucilage filling gap degree, the additive water reducing property and the like are merged into a mathematical formula; the quantitative relation among thedosage proportion of concrete raw materials, performance indexes and the slump of a mixture is disclosed, and the method can be used for designing and examining the mix proportion of concrete and controlling the mixing production quality.

The invention discloses a well-to-seismic collaborative sedimentary microfacies division method based on a high-precision sequence framework model, and the method comprises the steps: building a matching relation of well-to-seismic sedimentary facies features based on the lithologic combination of a stratum under a high-precision sequence stratum shelf and the seismic response features of sedimentary body cycle features, and optimizing the seismic attributes sensitive to the types of stratum sedimentary facies; and establishing a three-dimensional data volume for researching sedimentary subfacies and microfacies of a target layer through well-to-seismic collaborative simulation. And verifying the reliability and accuracy of the sedimentary facies three-dimensional data volume through a phase sequence rule, and finally obtaining a sedimentary facies division result suitable for industrial standards. According to the three-dimensional data volume of the sedimentary microfacies, the working efficiency of sedimentary facies division can be greatly improved, the transverse resolution and the longitudinal resolution are high, and the determinacy and the reliability of sedimentary microfacies fine division results are higher.

The invention belongs to the technical field of computer system software specialty, and relates to an inter-partition communication method based on ring buffer under multiple cores, which comprises the following steps: determining a first partition and a second partition which need to be subjected to inter-partition communication; establishing an annular buffer channel between the first partitionand the second partition, the annular buffer channel being configured with a source port and at least one destination port; creating the source port in the first partition calling port creation service, and creating a destination port in the second partition calling port creation service; and calling a sending service of the first partition to circularly send a message through the source port, andcalling a receiving service of the second partition to circularly receive the message through the target port. In this way, the inter-partition communication message transmission process can be simplified, communication shared resource decoupling is achieved, the determinacy of inter-partition communication operation is effectively improved, the CPU multi-core parallel computing processing capacity is fully utilized, and the system operation efficiency is improved.

The invention discloses a physical topological structure generation algorithm of a 664 avionics network. The algorithm comprises four steps of basic determination of the algorithm, input and output determination of the algorithm and an algorithm process. The basic determination of the algorithm comprises the following steps: determining annotation attributes in algorithm input, determining a physical topological structure of a 664 network, and determining a virtual link path; wherein the input determination of the algorithm comprises switch attribute determination, terminal attribute determination, APP attribute determination and known connection relationship determination; the algorithm process comprises target model determination of the algorithm, basic thought determination of the algorithm and a specific calculation process. According to the invention, various choices can be provided, the bandwidth utilization rate is higher, fewer switches are needed, the network delay is lower, the jitter is lower, the network determinacy is stronger, and the 664 network physical structure setting requirement applied to airplanes is fully met. The defects of low calculation precision, low bandwidth utilization rate and high maintenance cost due to manual setting of the physical structure of the avionics backbone network in the prior art are overcome.

The invention discloses a no-power-stoppage conversion circuit breaker set sequential control method for 30-degree angular phase difference power distribution lines. Through selecting a standby circuit breaker, a remedial measure on the condition of action rejection of a loop closing circuit breaker or a loop unlinking circuit breaker is realized. Through a method of sequentially controlling the circuit breakers, high definiteness is realized. The no-power-stoppage conversion circuit breaker set sequential control method is suitable for a 30-degree angular phase difference power distribution line loop-closing or loop unlinking occasion in high-speed communication.

A communication method in an automation system, wherein the system comprises an access point and client terminals that receive downlink data sent from the access point and send uplink data to the access point, and the data transmission is divided into a master multiple receiver aggregation phase and more than one slave multiple receiver aggregation phases. During the master multiple receiver aggregation phase, the access point aggregates the data to be sent to the plurality of client terminals into one packet for transmitting in the downlink, and during the slave multiple receiver aggregation phases, the access point aggregates data in which errors have occurred when being transmitted during the master multiple receiver aggregation phase into one packet for transmitting in the downlink. The method can have strict control, through the access point and over the uplink and downlink data transmission, thus enhancing the certainty during automation communication and further reducing the cycle time.

The invention discloses a PCB test method for a CAN bus body controller. A CAN bus test device is employed, an industrial personal computer is connected with an MCU of a BCM via a CAN bus, a storage self-diagnosis code is marked out at a storage area of the MCU of the BCM, the industrial personal computer controls the MCU of the BCM to perform self-diagnosis detection via the CAN bus as a host computer PC, the MCU reads all input port initial states, input port short circuit states, and diagnosis data capable of reading back and transmits the states and the data to the host computer PC for determination, synchronous signals are sent to a non-read-back output data port via the CAN bus and an AI module, data acquisition is realized via the AI module, the data is detected and transmitted to the host computer PC for determination, master control of the signal output of a DO module is realized via the CAN bus by the host computer PC, the detection of an input port of the BCM is conducted by the MCU, and forced output AI module signal detection of an output port is realized via master control of the MCU through the CAN bus by the host computer PC.

The present invention discloses a method for determining crack propagation characteristics of a turbine engine rotor. The method comprises defect fabrication, structural member forging blank fabrication, test block design, test block fabrication, gantry orthogonal fatigue test, and full focus phased array detection correspondence establishment, CT three-dimensional reconstruction detection correspondence establishment, test block fracture analysis, structural parts fabrication, structural part defect identification, structural part fatigue test, structural part internal crack detection, structural part surface crack detection, structural part fracture analysis. The method solves the problem of determining location and size of defects and cracks. The method achieves the purpose of quantitative analysis of internal cracks and internal characteristics of surface cracks and achieves the purpose of mastering the crack propagation law and further achieving damage tolerance design. The methodhas strong crack propagation characteristics determination ability, and solves shortcomings of the existing crack propagation characteristics determination technology.

The invention relates to a slag point detection method and device for a metal material, equipment and a storage medium. The slag point detection method for the metal material comprises the following steps: acquiring a cross-sectional image of the metal material to be detected; enabling the section image to comprise a backlight source image and an annular light source image, wherein the backlight source image is obtained by carrying out image acquisition on a to-be-detected metal material in a backlight source; obtaining the annular light source image by carrying out image acquisition on a to-be-detected metal material in the annular light source; carrying out binarization processing on the backlight source image by adopting an Otsu method to obtain a binarized image; determining the binary image as a mask image of the annular light source image, and performing image processing on the annular light source image according to the mask image to obtain a pure background image; and processing the pure background image by adopting a preset neural network model, and outputting a slag point detection result.

The invention relates to a program solidifying method based on the Ethernet. The method comprises the steps of initializing an end to be loaded, establishing network connection between a loading end and the end to be loaded so as to finish synchronization, enabling the loading end to load files to be solidified to the end to be loaded, and enabling the end to be loaded to solidify the files to be solidified into a Flash storer one by one through calling a writing Flash drive program according to a file loading information table. According to the program solidifying method, the characteristic that the Ethernet is quicker in transmission speed than media such as serial ports is utilized, and the files to be solidified are loaded from the loading end to the end to be loaded quickly, so that time needed by loading files is effectively shortened, and program solidifying efficiency is improved.

The invention discloses a gas-bearing prediction method and device based on attenuation factor change along with an incident angle. The method comprises the following steps: collecting a pre-stack angle domain gather, and determining an incident angle range of the pre-stack angle domain gather; superposing the pre-stack angle domain gathers according to a predetermined incident angle range to obtain a plurality of superposed seismic data; extracting a longitudinal wave attenuation factor of each superimposed seismic data; rearranging the extracted longitudinal wave attenuation factors according to the incident angle to obtain pre-stack longitudinal wave attenuation factors; and extracting the change characteristics of the pre-stack longitudinal wave attenuation factor at the target layer along with the incident angle to predict the gas-bearing property of the well. According to the application, the seismic attributes are calculated on the basis of the post-stack seismic data, so that the stability is high, and the method does not depend on logging data, so that the method is high in determinacy. Therefore, the method has great application and popularization value in the gas-bearing area.

The invention relates to a method for estimating the slump of concrete based on the mixing ratio and the properties of raw materials. The mathematical formula is imported to reveal the quantitative relationship between the proportion of concrete raw materials, performance indicators and the slump of the mixture, which can be used for concrete mix design, review and mixing production quality control.

The invention discloses a micro-groove feature segmentation method and system based on white light interferometry, and belongs to the field of image processing. Analysis of features of steps, transition areas, channels and noise in a micro-groove three-dimensional image shows that when two attributes of height and gradient are adopted for description, the interior of each feature is uniform and consistent, the difference between the features is large, and the attribute description between the features is basically not crossed, so that the accuracy of the feature description is greatly improved. According to the method, two parameters of height and gradient are used as two-dimensional attributes to describe each feature, so that the influence caused by noise can be avoided, and meanwhile, the distinguishing description capability on three to-be-extracted features of steps, transition regions and channels is relatively high; besides, a surface feature probability description method is adopted, automatic segmentation of groove microstructure features is realized based on a maximum information entropy principle, and height matrixes of various features for evaluation are obtained; the process does not need manual interference, the segmentation efficiency and accuracy are high, and the certainty is high.

The invention discloses a 664 network message construction algorithm, which comprises the following three steps of: determining the basis of a message algorithm, performing macro definition and valuecalculation thereof, and performing MESSAGE supplementary construction caused by DP deletion, modification and increment. The MESSAGE algorithm based determination comprises two-layer classification of DP in the same APP, internal construction of DS and internal DS classification of Message; the macro definition and value calculation comprises setting of main parameters and macro definitions, determination of a limiting relation satisfied between the macro definitions, and calculation of macro definition values; MESSAGE supplementary construction caused by DP deletion, modification and increment comprises determination of algorithm design limiting conditions, determination of a processing method of a deletion module, determination of a processing method of a modification module, determination of a processing method of an increment module and determination of a relationship among the three modules; the Message internal DS classification includes a simple and optimized filling method. According to the invention, various choices can be provided, the bandwidth utilization rate is higher, fewer switches are needed, the network delay is lower, the jitter is lower, the network determinacyis stronger, and the 664 network physical structure setting requirement applied to airplanes is fully met.

The present invention discloses a method for determining crack propagation characteristics of a turbine engine rotor. The method comprises defect fabrication, structural member forging blank fabrication, test block design, test block fabrication, gantry orthogonal fatigue test, and full focus phased array detection correspondence establishment, CT three-dimensional reconstruction detection correspondence establishment, test block fracture analysis, structural parts fabrication, structural part defect identification, structural part fatigue test, structural part internal crack detection, structural part surface crack detection, structural part fracture analysis. The method solves the problem of determining location and size of defects and cracks. The method achieves the purpose of quantitative analysis of internal cracks and internal characteristics of surface cracks and achieves the purpose of mastering the crack propagation law and further achieving damage tolerance design. The methodhas strong crack propagation characteristics determination ability, and solves shortcomings of the existing crack propagation characteristics determination technology.

The invention discloses a PIS frame supplementing algorithm based on a multicast and unicast hybrid strategy, data frame supplementing is realized by using a UDP unicast and multicast hybrid strategy,and for ground broadcast control and vehicle-mounted broadcast control, the network environment is different (the ground network environment is relatively wider, and the limitation is small; the vehicle-mounted network bandwidth is strictly limited), the broadcast control numbers are different (the ground broadcast control number is huge, and the vehicle-mounted number is relatively limited), a UDP unicast and multicast mixed frame supplementing strategy is adopted, multicast frame supplementing is conducted for ground broadcast control, unicast frame supplementing is conducted for vehicle-mounted broadcast control, the network bandwidth for frame supplementing is effectively saved on the whole, and the expenditure of a streaming media server is reduced. According to the invention, the original audio and video frame transmission and frame supplement are two independent behaviors, and the packaging format of the original audio and video frame remains unchanged, so that the PIS frame supplementing algorithm has stronger application scene adaptability, for example, some clients (such as a play controller) do not support a frame supplement protocol, and the system can also work normally under the condition that the packet loss is not obvious.

The invention discloses a method for well-seismic cooperative division of sedimentary microfacies based on a high-precision sequence framework model. The method is based on the seismic response characteristics of stratum lithology combination and sedimentary body cycle characteristics under a high-precision sequence stratigraphy shelf, and establishes well ‑ The matching relationship of seismic-sedimentary facies features, optimizing the seismic attributes that are sensitive to the type of strata-sedimentary facies, and establishing a three-dimensional data volume of sedimentary sub-facies and micro-facies of the research target layer through well-seismic collaborative simulation. The reliability and accuracy of the three-dimensional data volume of sedimentary facies were verified through the law of facies sequence, and finally the classification results of sedimentary facies suitable for industrial standards were obtained. The three-dimensional data volume of sedimentary microfacies obtained by the present invention can greatly improve the working efficiency of sedimentary facies division, and has high horizontal and vertical resolutions, and the result of fine division of sedimentary microfacies is more certain and reliable.

The invention discloses a method for optimizing the vibration stability of an automobile disc brake system, comprising: a parameter determination step, defining the research parameters of the brake system, and determining the research parameters as design parameters and uncertainty parameters; a model building step, establishing the brake system The simplified finite element model of the system; the sample point acquisition step is to obtain sample points by sampling; the solution step is to substitute the sample points into the finite element simplified model to solve complex eigenvalues ​​and judge the unstable mode of the brake system; the relationship establishment step is to obtain Obtain the relational expression of the research parameter of unstable mode and brake system; Optimizing step, take the damping ratio of unstable mode as optimization target, establish the interval optimization model of vibration stability of brake system, and carry out described interval optimization model Optimizing, searching for the optimal value of the design parameters, the present invention considers the uncertainty of system parameters in actual engineering, and the obtained optimal solution has higher engineering guiding significance.

The invention discloses a method for detecting maturity of fruits on a tree based on a visual saliency map. The method comprises the following steps: firstly, acquiring a fruit tree image through a camera, and identifying the fruits on the tree by using a YOLOv5 target detection algorithm; cutting fruit image blocks by using a bounding box coordinate output by the YOLOv5, and obtaining a visual saliency image by using an improved MSSS visual saliency detection algorithm; and the fruit image blocks and the corresponding visual saliency images are connected in series to form a four-dimensional RGBS image, and the maturity category of the fruit is judged by using an image classification network ResNet34 in combination with RGB and saliency information of the fruit local image. The detection method provided by the invention is excellent in accuracy and robustness, and is suitable for the conditions of complex scene and changeable illumination in a natural environment.

The method includes steps: setting up command of ending up group calling of cluster in cluster service in advance in use for dispatch terminal to end group calling; in process of group calling, cluster service exchange control center determines whether the received information is identical to the command of ending up group calling setup in advance; if yes, based on the received information, the control center ends up group calling. The invention discloses method for ending up group calling specially for dispatch terminal to use. When receiving off line command from the dispatch terminal, the exchange control center carried out off line treatment for the dispatch terminal only, thus, other communication terminals in the cluster can carry group calling continuously.

The invention discloses a method for preparing a triazolyl single-bond fully substituted cyclodextrin-silica gel chiral stationary phase through a click reaction and an application thereof. In the present invention, through the selective azidation of the 6-position of cyclodextrin, the full substitution and the alkynylation of silica gel, a newly developed catalyst is used to prepare a triazole-based single-bonded full-bonded compound with excellent chemical stability. Replacing cyclodextrin-silica gel chiral stationary phase, enriching the structure design of cyclodextrin. This type of triazolyl single-bonded fully substituted cyclodextrin chiral stationary phase exhibits excellent chiral resolution capabilities for amino acids, acidic and neutral racemic drugs in liquid chromatography, and is expected to be used as a chiral stationary phase. In the field of chiral resolution of pharmaceuticals for various chromatographic techniques.

The invention provides a pavement deflection full-field laser detection method and system. The method comprises the following steps: emitting a sector laser beam to a pavement to be measured, and forming a laser marking line which passes through a loading point of the pavement to be measured; providing an image acquisition control signal for a charge coupled device (CCD) image acquisition device, and controlling the image acquisition device to acquire a laser marking line image, wherein the operation comprises two-time image acquisition; acquiring two laser marking line images under two conditions that a standard load is loaded on the loading point and the standard load is unloaded from the loading point; transmitting the laser marking line image acquired by the CCD image acquisition device to a computer image information processing system in a wired or wireless mode; and performing image information differential interference processing through the computer image information processing system, thus acquiring image data of a deflection basin. According to the detection system and method provided by the invention, the pavement deflection is detected in a non-contact full-field mode, the distance between a supporting point and a measuring point is large enough, and a measuring basis is reasonably selected.

The invention discloses a seismic inversion method based on waveform micro-variation matching. Firstly, the positions of sparse sequences having large reflection coefficients are roughly searched, square wave processed impedance predicting sequences matched with seismic amplitude, phase and frequency are established through speed trend and compaction trend constraints by combining with reservoir prediction and hydrocarbon detection results, then the positions of sparse sequences having small reflection coefficients (or impedance predicting sequences) are determined through repeated iteration according to waveform micro-variation information, information such as the physical micro structure of the earth and micro-geological seismic response is fully mined, finally more accurate geological meaning is endowed to the formation by combining with physical analysis results of rocks to achieve accurate analysis on seismic waveform characteristics. In the inversion process, due to the fact thatreflection coefficients have stronger sparsity, inversion result interfaces have blocked characteristics (similar to square wave characteristics) and strong anti-noise capacity, and the readability of a formation interface is effectively improved.