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906results about How to "Take up less resources" patented technology

Crop pest identification method and system based on Android platform

The invention relates to a crop pest identification method based on an Android platform. The method comprises the steps of starting application software of a mobile phone with the Android platform, enabling the mobile phone to be connected with a wireless network, selecting the type of a crop, collecting a pest image, transmitting the pest image to an application program server, cutting the pest image with the application program server, and judging whether the expected threshold value is reached or not; if yes, conducting preprocessing, feature extraction and multi-feature fusion on the pest image in sequence; if not, cutting the pest image again; identifying features of the pest image, and transmitting the identified result and the corresponding pest control method to the mobile phone with the Android platform. The invention further discloses a crop pest identification system based on the Android platform. According to the crop pest identification method and system based on the Android platform, a user can intelligently diagnose crop pests anytime and anywhere, the limitation of simply relying on an agricultural specialist is avoided, the Android mobile phone platform is utilized, a traditional crop pest diagnosis mode is completely changed, farmland management efficiency is improved, and convenience is brought to the user.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI +1

Reconfigurable CNN (Convolutional Neural Network) high concurrency convolution accelerator

The invention provides a reconfigurable CNN (Convolutional Neural Network) high concurrency convolution accelerator, which comprises a weight address generation unit, a result address generation unit,a reconfigurable calculation unit, a characteristic pattern address generation unit, a master controller and a memory exchange unit, wherein the weight address generation unit generates the address of convolution kernel data in a cache; the result address generation unit generates the address of result data in the cache; the reconfigurable calculation unit can reconfigure a calculation array intotwo multiply-accumulation tree circuits with different particle sizes; the characteristic pattern address generation unit generates the address of characteristic pattern data in the cache; the mastercontroller generates an accumulator resetting signal synchronous with the address, carries out gating on a corresponding circuit in the reconfigurable calculation unit, and generates an interrupt signal for the end of the whole operation; and the memory exchange unit converts an effective characteristic pattern read address and a weight read address into the read operation of a memory unit, and converts an effective result write address and data into a write operation for the memory unit. The accelerator has the beneficial effects that a control part is simplified, the degree of parallelism of a multi-channel convolution operation and memory access efficiency can be greatly improved, and occupied resources are reduced.
Owner:NANJING UNIV

Mechanical arm space trajectory tracking dynamic compensation method and system

The invention provides a mechanical arm space trajectory tracking dynamic compensation method and system. The method comprises the following steps: (S1) a terminal pose error delta of a mechanical armis calculated according to a terminal anticipant pose matrix T1 of the mechanical arm and a terminal present pose matrix T0 of the mechanical arm; (S2) a joint target angle q* is calculated by usinga Jacobian matrix J (q), the pose error delta and a present joint angle q under a present terminal pose of the mechanical arm; (S3) a joint target angle speed FORMULA is calculated according to the Jacobian matrix J (q) under the present terminal pose of the mechanical arm and an anticipant speed v* of the terminal of the mechanical arm; and (4) the joint target angle speed FORMULA and an output quantity of a joint position controller are summed to obtain a joint speed instruction to drive each joint of the mechanical arm to move. The method is low in calculating complexity and few in occupiedresource, has no need to consider complicated dynamics models, and is simple, practical and probe to implementation; and each joint target speed is directly obtained through space speed output by terminal trajectory planning as a feedforward quantity without existing hysteresis, so that the instantaneity is achieved.
Owner:BEIJING INST OF RADIO MEASUREMENT

Method and equipment for spreading traffic information

The invention discloses a method for spreading traffic information. The method for spreading the traffic information comprises the following steps: when a vehicle has an emergent fault, an OBU reports a corresponding fault warning message and a rescue request to an RSU, and the RSU broadcasts the fault warning message to one or a plurality of OBUs in a cell. The invention further discloses equipment for spreading the traffic information. By means of the method and equipment for spreading the traffic information, when the equipment has an emergent fault, the fault warning message does not need to be sent to a core network after being reported to an access point, the fault warning message is directly processed by the access point, is broadcasted to the OBUs in the cell, and is broadcasted to other OBUs through the core network and surrounding access points, so that the OBUs in the cell or the access point can take emergency measures timely according to the fault warning message. Therefore, time urgency is guaranteed, and time delay is small. Besides, the access point shares the work of data processing and transmission, and the occupied resources of the core network are small. In addition, the fault warning message can be broadcasted to a plurality of the OBUs, and the coverage area is larger.
Owner:BEIJING NUFRONT MOBILE MULTIMEDIA TECH

Method and device for displaying picture in webpage, and terminal

The embodiment of the invention discloses a method and a device for displaying a picture in a webpage, and a terminal, and belongs to the field of digital image processing. The method comprises the following steps of creating canvas of which the size is the same as that of a display area in the display area of the picture in the webpage; acquiring the data to be rendered of the picture, and regulating the acquired data to be rendered of the picture according to screen resolution; rendering the regulated data to be rendered of the picture in the created canvas, and displaying the picture in the webpage. According to the method, the device and the terminal, the canvas of which the size is the same as that of the display area is created in the display area of the picture in the webpage, the acquired data to be rendered of the picture is regulated according to the screen resolution after the data to be rendered of the picture is acquired, the regulated data to be rendered of the picture is rendered in the created canvas, and the picture is displayed in the webpage, so that the size of the data to be rendered of the picture can be adaptively regulated according to the screen resolution, and the picture can be rapidly displayed for display equipment with lower screen resolution.
Owner:XIAOMI INC

Internet of things intrusion detection method based on finite state automaton and detection system

ActiveCN107135093AReduce storage space requirementsModel understandingData switching networksLabeled transition systemRound complexity
The invention relates to an Internet of things intrusion detection method based on a finite state automaton and a detection system. A general protocol group of an Internet of things terminal is modeled through adoption of a finite state automaton principle, moreover, real-time monitoring and modeling are carried out for actions performed by the Internet of things terminal in interaction, and the actions are matched with normal interaction behaviors predicted by the finite state automaton, so abnormal attack behaviors are judged. According to the method and the system, a complex Internet of things system can be expressed by a labeled transition system, so a demand of IDSs (Intrusion Detection Systems) for a storage space is reduced to a great extent. Moreover, the complexity of a comparison algorithm is decided according to the depth of a Glued-IOLTS (labeled transition system) graph of a corresponding Internet of things device operation protocol, so the Internet of things intrusion detection method based on the finite state automaton can be applied to an Internet of things system. The method and the device are characterized by low mass, few occupied resources and high performing efficiency, are convenient for use and are relatively low in investment cost.
Owner:XIDIAN UNIV

Person number detection device and method

The invention discloses a person number detection device, which comprises a pyroelectric infrared sensor, a signal processing circuit, a microprocessor and an artificial neural network, wherein the pyroelectric infrared sensor is arranged at an elevator floor station and/or in an elevator cage; when the human bodies move or rock, the pyroelectric infrared sensor generates electrical signals and sends the electrical signals to the signal processing circuit; the signal processing circuit amplifies and compares the electrical signals sent by the pyroelectric infrared sensor in real time to generate pulse signals; the microprocessor detects the pulse signals in real time, and extracts the frequency, chaos and long pulse proportion of the pulse signals; the artificial neural network comprises an input layer, an output layer and at least one hidden layer; the input layer is provided with three neurons, which input the frequency, the chaos and the long pulse proportion of the pulse signals respectively; and the output layer has one neuron, the output of which is rounded to obtain the detected person number. The invention also discloses a person number detection method for the device. Thedevice has the characteristics of simple structure, low cost and a few occupied resources, and is simple and convenient for processing.
Owner:SHANGHAI MITSUBISHI ELEVATOR CO LTD

Technique for realizing transforming plant anti mis-closedown function in transforming plant observe and control apparatus

The invention relates to a technique for realizing substation anti error-locking function in a substation measurement and control device which includes: the measurement and control device uses double-module structure; the measurement and control device connects with internet, UDP / IP agreement is used between various spacing layer for sharing information; anti error-locking logic is input and compiled through computer, and is download installed to the measurement and control device via internet; signal amount and electric amount of equipment state is used for processing anti error-locking logic judgement, and a hand-operation locking junction is added to each control object respectively. The technique uses spacing layer measurement and control device for realizing anti error-locking function, and realizes all remote operation and local hand-operation anti error-locking logic judgement, and prevents error protection; the technique also can classify message for preventing important message loss; anti error-locking logic using reversed Polish expression occurs less resource, has simple operation and is easy to calculation; remote operation and hand-operation are judged in advance, then locking is opened, thus, safety and correctness of operation can be ensured.
Owner:NARI TECH CO LTD +1

Design method for multi media card (MMC) self-defining submodule based on real time digital system (RTDS)

The invention discloses a design method for a multi media card (MMC) self-defining submodule based on a real time digital system (RTDS) in the technical field of power system running and control. The technical scheme is that the design method comprises building a submodule equivalent model containing an insulated gate bipolar transistor (IGBT), a bypass diode, a capacitor element, a bypass switch used for submodule control and protection and a bypass thyristor element, writing programs of the self-defining submodule according to a program development language of Cbuilder, and achieving various running states of the submodule. The design method has the advantages that the provided self-defining submodule can accurately simulate a simulation model composed of discrete components, simulation precision is high, a carrier wave phase shift modulation strategy can be combined, capacitance voltage-sharing of the submodule can be achieved without building a capacitance voltage-sharing controller externally, and occupied resources of the controller are reduced. In addition, signals for representing submodule faults can be output in input end signals of the submodule so as to be used for testing a control protecting device of the submodule.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Hardware in-loop testing platform of electric vehicle whole-body layered control system and testing method thereof

The invention discloses a hardware in-loop testing platform of an electric vehicle whole-body layered control system and a testing method thereof, wherein the hardware in-loop testing platform comprises a stand substrate, a driving environment simulating system, a road feel feedback system, an upper machine, a target machine, a data acquisition card and a to-be-tested integral-body layered control system. The testing method comprises the following steps of 1), establishing an integral-body model, a road model and a to-be-tested integral-body layered control system model; 2), forming the to-be-tested integral-body layered control system; 3), establishing a road feel feedback control model; 4), writing the integral-body model into the target machine; 5), inputting a control signal; 6), inputting a steering parameter, an acceleration parameter and a braking parameter into the whole-body model; 7), outputting a sensor signal which is simulated by the integral-body model; 8), outputting a real-time analog animation; and 9), performing evaluation and correction on the to-be-tested integral-body layer control system. The hardware in-loop testing platform can perform simulation on the driving environment and the integral-body model, thereby realizing hardware in-loop testing on a person-vehicle-road closed-loop control system.
Owner:CHONGQING UNIV OF TECH

Transfer time difference-based numerical control system on-site bus time synchronization method and device

The invention relates to a transfer time difference-based numerical control system on-site bus time synchronization method and a transfer time difference-based numerical control system on-site bus time synchronization device. The method comprises the following steps of: setting a counter in a master station or slave stations of a topological structure respectively to calculate communication time delay between the master station and each slave station; and performing counting by using the counter to make each slave station realize execution time synchronization of each slave station according to the communication time delay between the master station and the slave station. The device consists of a start-stop signal multi-route selection and distribution controller and a communication time delay calculation module, wherein the start-stop signal multi-route selection and distribution controller receives a transmitting starting signal, a receiving starting signal and a bus topological indication signal output by communication ports of the master station or the slave stations; and the start-stop signal multi-route selection and distribution controller is connected with the communication time delay calculation module through the receiving starting and transmitting starting indication signals. The method and the system have the advantages of simple implementation, few occupied resources, no additional signal line and no need of arranging an independent execution time synchronization starting signal line.
Owner:中国科学院沈阳计算技术研究所有限公司
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