34results about How to "Reduce the number of changes" patented technology

The invention relates to the technical field of unmanned gyroplane autonomous tracking, in particular to an unmanned gyroplane moving target autonomous tracking device based on a pan-tilt camera and an airborne sensor. The unmanned gyroplane moving target autonomous tracking device comprises an aircraft and a ground station. The aircraft comprises an aircraft controller, an aircraft propeller motor connected with the aircraft controller, and a pan-tilt motor. The pan-tilt motor is connected with the pan-tilt camera. A wireless image transmission module and a wireless data transmission module are arranged between the aircraft and the ground station. The aircraft and the ground station are connected through the wireless image transmission module and the wireless data transmission module. Images obtained by the airborne pan-tilt camera serve as input of a system, coordinates of a target in the images are obtained on the ground station through a Struck algorithm, modeling is conducted on the coordinates of the target through a uniformly accelerated motion (CA) model, the control quantity of a pan-tilt is designed according to the coordinates, estimated through modeling, of the target, and accordingly tracking instantaneity and smoothness of the pan-tilt camera are guaranteed.

The invention discloses an optimized-levenberg-marquardt (LM)-algorithm-based laser radar waveform decomposition method. The method comprises the following steps that: (1), a laser radar system records observation waveform data of back scattering in a digital mode; (2), signal enhancement is carried out on the observation waveform data, wherein the signal enhancement contains noise processing and smoothing processing; (3), a threshold value is set, peak-inflection point detection is carried out on the enhanced signal, and initialization estimation values containing a number, an amplitude, a position, and a pulse width initialization parameter are determined; (4), a standard LM algorithm is corrected by using an improved training module and iteration is carried out on the initialization estimation values to obtain feature parameters, including amplitudes, positions, and pulse widths, of all components of the enhanced signal; and (5), goodness of fit is calculated by using fitting data and original observation data and precision of the goodness of fit is determined; and an efficiency of a fitting algorithm is determined by using the number of times of iteration.

The invention discloses a cut tobacco air conveying method and device. Cut tobacco products enter a pneumatic conveying pipeline from a cut tobacco feeding machine, climb to the height of a pipeline layer by virtue of an active elbow, horizontally advance in the pipeline layer, then arrive at a position above a cigarette making machine and enter one trapezoid interface pipe with cross section gradually increased, and speed of cut tobaccos is flexibly converted; then the cut tobaccos pass through a buffered blanking device, airflow is extracted from the upper part, after the speed of the cut tobaccos is reduced, the cut tobaccos are fed to the blanking device in a free floating way and then enter into a metering tube to be buffered, and a cut tobacco collecting tank of the cigarette making machine is charged as required, so that a cigarette making technology is completed. The cut tobacco air conveying method and device have the advantages that breakage of the cut tobaccos and system energy consumption can be greatly reduced by virtue of measures of lowering air speed of conveying airflow, improving track of airflow in the elbow, lowering direction changing frequency, increasing cut tobacco feeding quantity every time and softening cut tobacco charging.

The invention discloses a distributed BIM collaborative platform, which comprises a platform host, and an architectural design team node, a structural design team node, an electromechanical pipeline design team node, a construction team node, a construction team node and a survey team node connected with the platform host, wherein each team node is connected with a plurality of work nodes. The platform host is used for integrating, processing and storing all models, data and information of the project. Upon completion of integration, the latest data, information and model are updated to all team nodes, and an interface is provided for external users. The team node includes a model integration module, a collision detection module and a bandwidth monitoring module, and each work node includes a design module. The platform realizes the high sharing of project model and information, simplifies the collaborative process, ensures the integrity and security of data, improves the efficiency and reduces the cost.

The embodiment of the invention discloses a three-dimensional scene rendering method. Reduction of the number of material utilization times in three-dimensional scene rendering is realized, and meanwhile, the number of times of interaction between a program and a graphics card is reduced, the number of state changes is reduced, and the efficiency of three-dimensional scene rendering is improved. The method disclosed by the embodiment of the invention comprises the following steps: S1, classification containers are traversed, and records corresponding to the materials of a three-dimensional scene are extracted; S2, all triangular surfaces corresponding to the materials are drawn according to the records; and S3, the triangular surfaces of the materials of all types are rendered one by one.

A function generator is introduced into a stack light in the form of a compatible modular element that fits between the base and a light module. By centralizing the operation of the function generator, fewer components must be separately stocked and a cost savings may be realized through the centralized function generator.

The invention discloses a design risk analysis method and system based on multi-system integration. The method comprises the following steps: obtaining experience information from experiment entrustment information, experiment report information, trial-manufacture problems, production problems and after-sales problems; establishing a product design failure mode and consequence analysis structure tree according to the bill of material data, and giving a product design failure mode and consequence analysis report by taking the product design failure mode and consequence analysis structure tree as a basis and referring to technical standard information and experience information; establishing a process design failure mode and consequence analysis structure tree according to the technological process list data, and giving a process design failure mode and consequence analysis report based on the process design failure mode and consequence analysis structure tree by referring to technological resource library data and experience information; and obtaining a product design risk analysis result according to the product design failure mode and consequence analysis report and the process design failure mode and consequence analysis report. According to the method, the risk analysis is more comprehensive, and the design and manufacturing misunderstanding is reduced.

The invention relates to an intelligent substation optical fiber link testing method and device, and the method comprises the steps: enabling a to-be-tested device to be connected with a testing device through an optical fiber and a network cable, carrying out the quick analysis of an SCD file after the SCD file is obtained, automatically matching a virtual loop, and correlating the states of an optical fiber link. And then, the optical port sending power and the receiving sensitivity can be automatically tested. An optical power testing module comprising a logarithmic ratio amplifier is adopted for optical power testing, a sensitivity testing module for controlling optical attenuation through the MEMS technology is adopted for optical receiving sensitivity testing, high testing precisioncan be guaranteed, and errors are reduced. And the device can test eight paths of optical ports at the same time, the test efficiency is greatly improved, the test precision is improved, the test period of a debugging stage is shortened, and the manpower and material resource cost is saved.

The invention discloses an anti-collision method and device of an RFID system, a computer readable storage medium and a device, and belongs to the technical field of radio frequency identification. The method comprises the steps of S100 estimating the number of labels, and grouping the labels; S200 determining the time slot parameters according to the number of labels of the current group; S300 sending a command with time slot parameters to the tag, and after the tag receives the command, generating a random number to serve as a time slot value; S400 simultaneously receiving the response signal of the tag when three time slots are opened each time, and marking the time slots as idle time slots, successful time slots or collision time slots according to the condition of the response signal;S500 adjusting time slot parameters according to the number of idle time slots, the number of successful time slots and the number of collision time slots; if the successful time slot is 0, returningto the step S200; otherwise, returning to the step S300; The method is high in universality, is simple and easy to realize, solves the label starvation problem, reduces the possibility of label collision, improves the identification efficiency of the system, and optimizes the system performance.

The invention provides a practical Byzantine fault-tolerant node setting method which comprises the following steps: receiving a consensus message sent by a consensus node, and extracting informationof a first consensus node from the consensus message, the first consensus node being a consensus node set for sending the consensus message; extracting an execution result of the consensus node according to the received consensus message, and dividing the first consensus node into a second type of Byzantine node and a non-Byzantine node according to the execution result; extracting second consensus node information stored by the client, and obtaining a first type of Byzantine node according to the first consensus node information and the second consensus node information; and performing firstprocessing on the first type of Byzantine node, and performing second processing on the second type of Byzantine node. According to the invention, different types of Byzantine nodes are distinguished,and different processing forces are adopted for different types of Byzantine nodes, so that non-malicious Byzantine nodes can be reserved as much as possible, the view change frequency is reduced, online computing resources are saved, malicious fraudulent or attacked Byzantine nodes are eliminated as much as possible, and safe and reliable operation of the system is ensured.

The invention discloses a method and device for writing MLC STT-MRAM data, and a method and device for reading the data, wherein the method for writing the MLC STT-MRAM data comprises the steps that new data is transmitted to the write queue of MLC STT-MRAM from a buffer to wait for a write; the number of changing the magnetization state of the cell hard region by each data state when the MLC STT-MRAM is written and the corresponding mapping type are obtained through comparison of the new data and the old data; the mapping type that the number of the changes required by the magnetization state of the MLC STT-MRAM hard region is minimum is selected to serve as a remapping mode, and the remapping mode is used for numerically remapping the new data; according to a corresponding write strategy, the obtained data and mapping type after remapping is written to the MLC STT-MRAM together.

The invention discloses an intelligent light box controller. The intelligent light box controller comprises a casing; a central processing module is arranged in the casing; a connecting end of the central processing module has a light shadow effect generating module, a brightness control module, a number storage module, an instruction input module, a working state detecting module, an environmentinformation acquisition module and a WiFi transmission module; a connection end of the light shadow effect generating module has a display module; and the working state detecting module comprises an access detecting module and a position detecting module. The invention can help the maintenance personnel to quickly find a fault light source and repair or replace the fault light source, can improvethe maintenance efficiency, can prolong the working time of the intelligent light box, and can remind the maintenance personnel of carrying out regular maintenance to avoid failures due to the fact that maintenance is not performed for a long time. The normal operation of the intelligent light box controller is ensured, and the service life of the intelligent light box controller is prolonged.

A traffic light recognition device is provided with a camera (11) that captures an image of the vicinity of a vehicle, a map information acquisition unit (17) that acquires map information for the vicinity of the vehicle, a current vehicle position detection unit (12) that detects the current position of the vehicle on a map, and a traffic light position estimation unit (21) that estimates the position of the traffic light in the image on the basis of the current vehicle position and the map information. The traffic light recognition device is additionally provided with an imaging orientationsetting unit (23) that sets the imaging direction of the camera on the basis of the position of the traffic light in the image and the future direction of movement of the traffic light in the image, acamera orientation control unit (24) that changes the imaging direction of the camera to an imaging direction set by an imaging direction setting unit, and a traffic light recognition unit (14) thatrecognizes the traffic light from the image captured by the camera in the imaging direction. The present invention makes it possible to highly accurately detect the lighting state of a traffic light without being affected by the orientation of a camera.

The invention relates to a technological process changing method and a method for monitoring a changed technological process. The technological process changing method comprises the steps of pre-batching wafer groups to obtain a plurality of wafer batches; selecting the wafer batches applicable to changing application according to current change application, wherein wafers in the wafer batches include standard wafers; selecting changed wafers in the selected wafer batches applicable to the changing application except the standard wafers so as to obtain a wafer batching result; executing a technological process based on the wafer batching result. By means of the technological process changing method, change repeating rate and change cost of the technological process can be reduced.

The embodiment of the invention provides an information processing method and device based on a knowledge graph. The method relates to a centralized knowledge graph platform, the knowledge graph platform supports multiple service domains, graph execution engines are deployed in the multiple service domains respectively, and the method comprises the steps that the knowledge graph platform receives a processing instruction which is initiated by a user for a target service domain and is related to a knowledge graph, the processing instruction is sent to an atlas execution engine deployed in the target service domain; wherein the target service domain is one of the plurality of service domains; and the graph execution engine deployed in the target service domain executes the processing instruction to obtain a processing result, and returns the processing result to the knowledge graph platform.

The invention discloses a locating method for the phase jitter problem of a satellite-borne SAR (Synthetic Aperture Radar) transmitting-receiving link. The method comprises the following steps of: acquiring a first master phase history corresponding to a first master transmitting-receiving link of a first transmitting-receiving link and a first standby phase history corresponding to a first standby transmitting-receiving link of the first transmitting-receiving link, wherein the first transmitting-receiving link is formed by connecting a frequency modulated signal source, a pre-power amplifier, an adjustable attenuator, a microwave combination, a radar receiver, and a data former; firstly determining whether main engines, which constitute corresponding single machines of the first master transmitting-receiving link, in the first master transmitting-receiving link have a fault; and after the fault detection of the first master transmitting-receiving link is completed, determining whether standby engines, which constitute corresponding single machines of the first standby transmitting-receiving link, in the first standby transmitting-receiving link have a fault. According to the technical scheme, the method can be used for locating a faulty single machine causing the phase jitter problem of the satellite-borne SAR transmitting-receiving link, and reducing the number of change ofthe connection state of the transmitting-receiving link in the positioning process of the faulty single machine, and saves operating time.