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71 results about "Terminal design" patented technology

Digital aviation communication system design based on cellular-free network architecture

The invention discloses a digital aeronautical communication system design based on a cellular-free network architecture, which belongs to the technical field of aeronautical communication and comprises an aeronautical communication system and a communication service execution module. The aeronautical communication system comprises a network infrastructure and a communication link layer and is responsible for providing underlying physical connection and transmission environment support. The communication service execution module covers a network protocol and information interaction and task execution process; the network infrastructure adopts distributed AP topology planning, airport and route area APs are deployed in a differentiated manner, and parameters are dynamically adjusted in combination with a three-dimensional coverage optimization model; and software and hardware modules comprise ground APs and airborne terminals, so that the problems caused by high-speed movement are solved. The communication link layer carries out multi-dimensional channel modeling, and LDPC code coding and dynamic cluster generation are adopted. The working process comprises the steps of initialization, cluster construction, state monitoring and the like, stable communication in the whole flight process is achieved, and the aviation communication efficiency and safety are improved.
Owner:BEIHANG UNIV

Electric heating aging test method and device for simulating space charge effect of cable terminal

The invention discloses an electrothermal aging test method and device for simulating the space charge effect of a cable terminal. The method comprises the following steps: S1, treating a cable sample; s2, constructing an electric heating aging platform; s3, carrying out five aging stage tests on the cable sample; s4, carrying out space charge detection on the cable samples at different aging stages; s5, analyzing correlation between a space charge accumulation rule and insulation degradation based on a charge mobility formula and an injection current formula; according to the invention, the actual working condition of the cable terminal is accurately simulated through the electrothermal collaborative aging platform, and the limitation that the space charge evolution law is difficult to reproduce in the traditional method is overcome; a weighted all-phase averaging method is adopted to process signals, and an arc-shaped sensor and a frequency domain deconvolution algorithm are combined, so that interference is effectively filtered out, and the detection stability and accuracy are improved; through correlation of charge accumulation and insulation degradation processes, an insulation failure mechanism is disclosed, fault early warning is realized, and theoretical and test support is provided for design optimization, life evaluation and operation and maintenance of the cable terminal.
Owner:JIAOZHOU POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO

Intelligent air valve hydraulic assembly

The application discloses a smart air valve hydraulic assembly, and belongs to the technical field of valve device safety, which comprises an air valve, a sensing device and a smart monitoring terminal, wherein the sensing device is arranged on a valve and / or the periphery of the valve and is connected with the smart monitoring terminal, and the smart monitoring terminal is connected with a power supply device. The air valve, the sensing device and the smart monitoring terminal are designed as an integrated hydraulic assembly, high-frequency transient parameter data acquisition can be realized, the smart monitoring terminal completes data acquisition and analysis processing, and the collected data and analysis results are selectively uploaded according to an uploading strategy; the smart monitoring terminal can analyze data by using an AI technology, identify water hammer risks and equipment health, and has the characteristics of low energy consumption.
Owner:ZHUZHOU ZHUHUA SMART WATER TECH CO LTD +1

Design method of high-sensitivity passive sensing terminal

The invention discloses a high-sensitivity passive sensing terminal design method, and belongs to the technical field of passive sensing of the Internet of Things. The method is used for solving the problems of unstable energy collection, insufficient energy storage and easy task interruption of the passive terminal under the condition of ultralow input power. The method comprises an energy acquisition unit, an energy management and storage unit composed of a long-term energy storage capacitor and a short-term energy storage capacitor, and a sensing terminal unit. The system charges the two capacitors at the same time in the dormancy stage; the system is awakened in a preset time through a low-power-consumption timing mechanism, the capacitor voltage is detected, and main power supply is switched on only when the two reach a power-on threshold value, so that the terminal executes a sensing and communication task once. In the task process, when the voltage of any capacitor is reduced to a power-off threshold value, the system immediately closes main power supply and enters the energy storage stage again. Efficient energy collection and reliable energy storage are achieved through a double-capacitor structure and a double-threshold mechanism, tasks can be stably completed under limited energy, and the low-power-consumption wireless sensing device is suitable for low-power-consumption wireless sensing application.
Owner:JIAN ELECTRONICS TECH INTEGRATED CIRCUIT & COMM TRANSMISSION LAB TECH CO LTD

Cable terminal part construction method, device and equipment and readable storage medium

The invention provides a cable terminal component construction method, device and equipment and a storage medium, and relates to the field of cable terminal design, and the method comprises the steps: obtaining construction parameters of a thick-wall cylinder model corresponding to a cable terminal, determining an equilibrium equation, a geometric equation, a constitutive equation and a boundary condition equation of the thick-wall cylinder model corresponding to the cable terminal based on the construction parameters, and determining a pressure parameter of the cable terminal and a radius parameter corresponding to the cable terminal; and constructing an epoxy sleeve and a stress cone support based on the pressure parameter of the cable terminal, the radius parameter corresponding to the cable terminal, and the equilibrium equation, the geometric equation, the constitutive equation and the boundary condition equation of the thick-wall cylinder model corresponding to the cable terminal. According to the stress cone, the factors of local deformation of the stress cone are considered, and the epoxy sleeve and the stress cone support are redesigned, so that the phenomenon that the local stress is concentrated due to the fact that the interface pressure between the contact surfaces becomes nonuniform due to the fact that the stress cone is locally deformed greatly is avoided.
Owner:NINGBO ORIENT WIRES & CABLES CO LTD +1

Fast recovery diode semiconductor device and preparation process thereof

The invention discloses a fast recovery diode semiconductor device and a preparation method thereof, and the device comprises a substrate, a plurality of upper grooves which are formed through downward etching from the upper surface of the substrate, and a plurality of lower grooves which are formed through upward etching from the lower surface of the substrate. The inner side wall of the upper groove and the upper surface area connected between the upper grooves are doped to form a first doped layer, the inner side wall of the lower groove and the lower surface area connected between the lower grooves are doped to form a second doped layer, the upper grooves are filled with metal to form first electrodes, and the lower grooves are filled with metal to form second electrodes. Compared with a traditional FRD device, the area utilization rate can be improved on the premise that the chip size is guaranteed, and the FRD device has more advantages in electrical parameters such as conduction voltage drop under the same size; the cost of the chip is effectively reduced, and the promotion of national electrification is facilitated; meanwhile, according to the structure, the junction edge position uses the surface of the silicon substrate to enable the junction edge position to be approximate to a planar junction, the complexity of terminal design is greatly reduced, and the chip size is further optimized.
Owner:江苏新顺微电子股份有限公司

Round terminal

The utility model provides a circular terminal, which comprises a main body part and a tail part, the tail part extends backwards from the rear end of the main body part, the main body part is in the shape of a hollow cylinder, and the diameter of the main body part is gradually increased from the front end of the main body part to the tail part along the axis direction. According to the unique gradually-changing design, when the terminal is pre-inserted into the plastic hole, the terminal can gradually interfere with the wall of the plastic hole, so that the terminal can be effectively prevented from rotating and loosening, and the problem of abnormal riveting pressure caused by rotation and loosening is also avoided. In a traditional connector terminal design, rotation loosening often causes poor riveting, and further electrical performance and mechanical strength of a connector are affected. The design of the circular terminal fundamentally solves the problem, so that the stability and reliability of the connector in the long-term use process are ensured.
Owner:GUANGDONG SHENGLAN ELECTRONIC TECH CO LTD

Optimization design method and device for tail structure of cable terminal and storage medium

The invention relates to the technical field of cable terminal design, and particularly provides an optimization design method of a cable terminal tail structure. The method comprises the steps that COMSOL simulation software is used for establishing an electricity-heat-flow multi-physics field coupling model of the direct-current cable terminal, optimization design is conducted on the tail structure of the cable terminal based on the model, and the optimization design comprises metal sheath recovery and optimization design of forming a heat dissipation window in a cone support. Then, carrying out simulation analysis on the natural convection flow velocity of the tail pipe air, the air temperature distribution of the tail pipe and the mechanical stress distribution before and after the tail structure of the cable terminal is optimized, and verifying the heat dissipation effect and the mechanical stress distribution of the tail structure of the cable terminal after the optimization design through the simulation analysis; therefore, the cable terminal can achieve the optimal heat dissipation effect in various application scenes. According to the method, a theoretical basis is provided for tail structure design, the cable terminal with good heat dissipation efficiency can be designed through the method, and meanwhile installation convenience and mechanical safety in actual operation are both considered.
Owner:NINGBO ORIENT WIRES & CABLES CO LTD +1

An innovative design system based on the creativity of consumer groups

The present invention discloses a creative design system based on the creativity of consumer groups, and relates to the field of product innovation design. The system is composed of a consumer mobile creative terminal, a designer PC work terminal and a cloud server, and is aimed at the consumer group's full participation in innovative design. Through the interaction between the consumer mobile creative terminal, the designer PC work terminal and the cloud, the consumer group can participate in the entire creative design cycle from early design creative stimulation to mid-design creative iteration optimization to late design solution optimization, and assist the designer group in carrying out creative design activities. The participation of the consumer group in the design process can, on the one hand, provide a continuous source of inspiration for the designer group, and improve the breadth and depth of product creative design; on the other hand, it can meet the needs of diverse consumer groups, make the design solution more objective and scientific, and at the same time improve the consumer group's sense of participation and identity.
Owner:ZHEJIANG UNIV OF TECH

Extended terminal design for a power tool

A power tool includes a printed circuit board (PCB). The PCB includes a terminal configured to electrically couple to a wire to electrically couple a first component of the power tool with a second component of the power tool. The terminal extends away from the PCB to allow the wire to connect to the terminal with a lower amount of wire bends and / or a greater amount of wire bend radius compared to the wire being connected to the terminal at a location on the PCB where the terminal is located. The terminal includes a first end portion connected to the PCB, a second end portion opposite the first end portion connected to the wire, and a middle portion extending between the first end portion and the second end portion. The middle portion may be surrounded by an insulative housing of a terminal clip that is attached to the PCB.
Owner:MILWAUKEE ELECTRIC TOOL CORP

Calibration and monitoring in cascaded radar systems without local oscillator signal distribution

A monolithic integrated radar microwave interface (MMIC) comprises control logic designed to place the radar MMIC into one of several operating modes, a local oscillator (LO) generation circuit designed to generate an LO signal, an LO output terminal designed to output the LO signal for LO distribution to another MMIC, and an LO distribution circuit coupled to the LO output terminal designed to receive the LO signal from the LO generation circuit and enable or disable LO distribution based on a control signal. The control logic is designed to provide the control signal to the LO distribution circuit to enable or disable LO distribution.The control signal is designed to activate the LO distribution circuit during a radar operating mode and to deactivate the LO distribution circuit during at least one calibration operating mode or one monitoring operating mode.
Owner:INFINEON TECHNOLOGIES AG

A design method of a ZYNQ internet of things terminal with edge AI video analysis function

The application provides a ZYNQ Internet of Things terminal design method with edge AI video analysis function, and relates to the technical field of Internet of Things edge computing terminal design. The ZYNQ Internet of Things terminal design method with edge AI video analysis function comprises a ZYNQ processor, a PL end DPU video module of the ZYNQ processor, a PS end DPU control module and an AI DPU module. The ZYNQ processor is connected with the AI DPU module through the DPU video module and the DPU control module. The PS end of the ZYNQ processor collects camera video, performs decoding operation and obtains image data. The DPU video module performs format conversion and packaging on the image data, obtains video data and transmits the video data to the AI DPU module. The AI DPU module performs artificial intelligence identification on the video data, obtains AI video identification results and sends the AI video identification results to the ZYNQ processor. The ZYNQ processor comprehensively analyzes the identification results and obtains analysis results. The application can reduce the deployment time, cost and power consumption of software and hardware.
Owner:UNIV OF SCI & TECH BEIJING

A communication module supporting high-orbit satellites and low-orbit Internet satellites

The present invention provides a communication module that supports high-orbit satellites and low-orbit internet satellites, belonging to the field of satellite communication technology. It includes a baseband unit, a radio frequency unit, and a power supply and interface unit; the baseband unit, the radio frequency unit, and the power supply and interface unit are each connected to the other two units in pairs, wherein the baseband unit mainly runs two standard communication system protocols for high-orbit satellite communication and low-orbit internet narrowband satellite communication to achieve access to the high-orbit satellite network and the low-orbit internet; the radio frequency unit mainly realizes the transmission and reception of radio frequency signals required for high-orbit satellite communication and low-orbit internet narrowband satellite communication; the power supply and interface unit mainly realizes the embedding of the communication module into an external terminal to achieve data interaction with the terminal, and at the same time supplies power to the baseband unit and the radio frequency unit. While supporting two satellite communication systems, this communication module reduces the complexity of peripheral terminal design and has the advantages of high integration, low cost, miniaturization, and low power consumption.
Owner:THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

Cable termination component construction method, apparatus, device, and readable storage medium

The application provides a cable terminal component construction method, device, equipment and storage medium, relates to the field of cable terminal design, and the method comprises the following steps: obtaining construction parameters of a thick-walled cylinder model corresponding to a cable terminal, determining a balance equation, a geometric equation, a constitutive equation and a boundary condition equation of the thick-walled cylinder model corresponding to the cable terminal based on the construction parameters, determining a pressure parameter of the cable terminal and a radius parameter corresponding to the cable terminal, and constructing an epoxy sleeve and a stress cone support based on the pressure parameter of the cable terminal, the radius parameter corresponding to the cable terminal, the balance equation, the geometric equation, the constitutive equation and the boundary condition equation of the thick-walled cylinder model corresponding to the cable terminal. Considering the factor of local deformation of the stress cone, the epoxy sleeve and the stress cone support are redesigned, so that the local stress cone is prevented from being subjected to large deformation, and then the interfacial pressure between the contact surfaces becomes uneven, and the phenomenon of local stress concentration occurs.
Owner:NINGBO ORIENT WIRES & CABLES CO LTD +1

A defect positioning and identifying method for nondestructive testing of a steel wire rope

The application discloses a kind of steel wire rope nondestructive testing defect positioning identification method, mainly including probe structure design, acquisition computing terminal design and defect positioning identification algorithm design.Probe structure design avoids equipment shaking, suitable for different direct steel wire rope detection scene.Acquisition computing terminal design designs the steel wire rope detection terminal equipment for complex field.Defect positioning identification algorithm is based on the collaborative analysis of slice image and slice waveform of local defect LF and metal cross-sectional area loss LMA, according to LMA data verification for LF diagnosis result, combined with respective confidence, to obtain the final steel wire rope defect specific position and type.
Owner:INST OF ENERGY HEFEI COMPREHENSIVE NAT SCI CENT (ANHUI ENERGY LAB) +1

Clothing production system based on personalized customization

The invention relates to the technical field of intelligent knitting, in particular to a clothes production system based on personalized customization, which comprises a main control module, and a signal receiving and transmitting module, an analysis module and a plurality of production units which are in signal connection with the main control module, and is characterized in that the signal receiving and transmitting module is used for performing signal interaction with an external terminal to obtain clothes order information; the analysis module is used for analyzing the clothes order information; the main control module carries out production scheduling on the clothes by utilizing a plurality of production units according to the data analyzed by the analysis module; wherein a user designs a pattern of the clothes through an external terminal. The clothes order information is analyzed through the analysis module, the main control module schedules the clothes order information to the corresponding production units according to the data obtained through analysis, and the effect that a user customizes clothes in a personalized mode can be achieved.
Owner:DONGGUAN GUANGHUI KNITTING CO LTD

Irradiation terminal based on combination of rotating beam lines and application of the same

Disclosed are an irradiation terminal based on a combination of rotating beam lines and an application thereof, the irradiation terminal comprises a combination of rotating beam lines, a rotating gantry, and an operation room. The combination of rotating beam lines includes a rotator beam line, a horizontal beam line, and an inclined beam line at a certain angle to the ground, and can achieve irradiation at different angles; the combination of rotating beam lines is arranged on the rotating gantry, and beam allocation for a plurality of operation rooms at different azimuth angles can be implemented through rotating a single combination of beam lines by 0-360 degrees by the rotating gantry; a plurality of rotating beam lines can be combined to achieve multi-angle beam irradiation in a single operation room. The present disclosure solves the problems in the application and promotion of irradiation devices, has outstanding advantages such as a large number of operation rooms, multiple irradiation angles, low construction cost, and low area occupancy, and it greatly improves treatment efficiency and reduces treatment costs, and thus is a universal ion irradiation terminal design scheme.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Cable terminal with heat-indicating properties

The technical solution relates to cable terminals, and more particularly to cable terminals designed to be capable of irreversibly indicating heating above a temperature threshold. A cable terminal capable of indicating heating above a temperature threshold comprises a metallic electrically conductive portion that is fastenable to a conductor(s) (non-insulated end) of a cable by crimping, and a dielectric portion that is connected to said electrically conductive portion. The dielectric portion comprises a base that is securable to a cable and has a dielectric strength of not less than 3 kV / mm and a thermal conductivity of not less than 0.1 W / (m⋅K), wherein the front surface of said base has a heat-sensitive material applied thereto which undergoes an irreversible change in transparency when heated above a threshold temperature, and the minimum distance from the heat-sensitive material to the metallic electrically conductive portion is not greater than 10 mm. The technical solution provides increased fire safety and electrical safety during the use of electrical equipment by providing a reliable contact connection that is capable of irreversibly indicating heating above a temperature threshold to allow timely identification of defects in the contact connection.
Owner:LLC TERMOELEKTRICA

A rapid control prototyping design method, system and terminal

The application relates to the technical field of automation and intelligent control design, and discloses a rapid control prototype design method, a system and a terminal. The design method comprises the following steps: adding a cloud service program to a lower computer; a host computer browser sends a page request to the cloud service program to construct a Web application, which comprises a model library browser, a graphical modeling area and a rapid control prototype running monitoring window; the Web application sends a graphical modeling operation to the cloud service program; the cloud service program updates the connection relationship between member components and component ports of the rapid control prototype according to the operation; the rapid control prototype running monitoring window sends a starting instruction, the cloud service program analyzes the member component port connection relationship to obtain a member component execution sequence, sequentially calls the control functions corresponding to the member components to complete controller calculation, and sends running results to the Web application in real time. The application does not need code generation, compilation and downloading, has simple software architecture, is high in usability, is low in research and development cost and is easy to maintain.
Owner:NANJING DIGITAL SPACE-TIME TECH CO LTD

Compiler-based aggregation type data layout automatic conversion method

The invention relates to data layout conversion, in particular to a compiler-based aggregation type data layout automatic conversion method, which comprises the following steps of: designing a front end, defining an interface of a user program and a compiler, and realizing the interface with the compiler in a mode of declaring a function F through the user program; the translated source and target addressing architecture, the translated data type, the translated source and target data address and the translated occurrence time are informed to the compiler; terminal design: complete definition of a function F stated by a user program is completed in a compiler, so that the function F has a data layout conversion function, that is, source data is read according to an addressing architecture of the source data, and the source data is stored to a target data address according to an addressing architecture of the target data; according to the technical scheme provided by the invention, the defect of poor compatibility of data interaction and code transplantation of aggregation type data among processors with different addressing architectures in the prior art can be effectively overcome.
Owner:安徽芯纪元科技有限公司

Optimization design methods, equipment and storage media for cable termination tail structures

This application relates to the field of cable terminal design technology, specifically providing an optimized design method for the tail structure of a cable terminal. A multiphysics coupling model of the DC cable terminal based on electro-thermal-fluid fields is established using COMSOL simulation software. Based on this model, the tail structure of the cable terminal is optimized, including the restoration of the metal sheath and the optimization of heat dissipation windows on the conical support. Then, simulation analysis is performed on the natural convection velocity, air temperature distribution, and mechanical stress distribution in the tail pipe before and after the optimization. This simulation analysis verifies the heat dissipation effect and mechanical stress distribution after the optimized tail structure design, ensuring that the cable terminal achieves optimal heat dissipation in various application scenarios. This method provides a theoretical basis for tail structure design, enabling the design of cable terminals with good heat dissipation efficiency while considering installation convenience and mechanical safety during actual operation.
Owner:NINGBO ORIENT WIRES & CABLES CO LTD +1

Cable phase sequence discriminator

The utility model relates to the technical field of electric power detection, in particular to a cable phase sequence discriminator, which comprises a transmitting unit, a receiving unit and a phase sequence discriminator, and is characterized in that the transmitting unit is provided with three output ends for connecting three phase lines of a cable, and the three output ends are used for transmitting three predetermined level signals; the receiving unit is connected to the other end of the cable; according to the phase sequence discriminator, direct current level signals are generated through the sending unit, the signals are accurately received through the receiving unit, the cable phase sequence discrimination function is achieved, the display mode of the receiving unit adopts the two-wire terminal design, an operator only needs to make contact with all phases of a cable once, and phase sequence discrimination can be completed; by means of the design, the operation procedure is greatly simplified, and the operation efficiency is improved; in addition, the phase sequence discriminator utilizes a direct-current level signal, the current always flows to a receiving end along a constant direction, and no advanced or delayed current exists in a circuit.
Owner:GUANGZHOU CHENGBEI ELECTRIC POWER ENG CO LTD

Mobile phone positioning indoor and outdoor seamless switching multi-source interactive navigation method

According to the mobile phone positioning indoor and outdoor seamless switching multi-source interactive navigation method provided by the invention, seamless full coverage of pedestrian positioning is realized, and positioning in different scenes is realized by taking a GNSS satellite positioning technology, a position fingerprint positioning technology and a PDR as means; multi-source observation data and judgment information are effectively utilized to realize smooth transition and seamless connection between different positioning mechanisms and different positioning scenes; on the basis of a mobile phone terminal, the overall design and development of seamless positioning software are realized in combination with an advanced map SDK (Software Development Kit). According to the positioning requirements of public pedestrians, multi-source interactive seamless positioning software is designed based on a mobile phone terminal, and position fingerprints provided by an Amod positioning SDK are adopted indoors to match a positioning result; scene judgment is carried out by comprehensively utilizing multi-source observation information in an indoor and outdoor transition area, and various positioning results are filtered in a centralized manner according to the scene judgment, so that seamless switching is realized. The system has the characteristics of low cost, easy carrying, high precision, full coverage, seamless continuity and the like.
Owner:赵德文

A data recorder

The present application discloses a data recorder that integrates a memory, a main controller, a multi-channel analog-to-digital converter, a millivolt terminal, a common reference terminal, a voltage terminal, and a voltage-current terminal into one device, thereby integrating multiple monitoring modes. Only one device is required to complete the tasks of multiple monitoring modes such as decoupler monitoring and constant potentiostat monitoring, thereby reducing equipment procurement, maintenance and operating costs and greatly improving economic benefits. The unique four-terminal design (millivolt terminal, common reference terminal, voltage terminal, and voltage-current terminal) and optimized wiring method greatly simplify the equipment wiring process. A unified data collection method is used to ensure that all monitoring data is acquired and recorded within the same time frame, laying a solid foundation for subsequent accurate assessment of pipeline corrosion status, helping engineers accurately judge the operating status of pipeline cathodic protection systems, promptly identify potential corrosion risks, and improve pipeline safety management.
Owner:BEIJING SAFETECH PIPELINE

Pipe gallery cable arrangement and protection method

The embodiment of the invention provides a dynamic adaptation and active protection method for a pipe gallery cable. The method comprises the steps that a modularized and splicable dynamic adaptation type cable bearing unit with an adjustable clamping groove and a movable base is constructed; deploying a cable entanglement processing mechanism based on sensor early warning and mechanical structure automatic dredging; building an environmental response type active protection system which triggers a grading strategy according to temperature, humidity, corrosive gas and dust concentration; an integrated cable management terminal integrating bearing, early warning, dredging and protection functions is constructed; and designing a cable full-life-cycle tracing mechanism for binding the NFC tag and the bearing unit. The problems of fixed cable layout, passive entanglement dredging, lack of pertinence in protection and scattered management in the prior art are solved, dynamic adaptation, active early warning dredging, precise protection and integrated management and control of cable management are realized, the cable fault occurrence rate is remarkably reduced, the operation and maintenance efficiency is improved, and the method is suitable for cable management of various comprehensive pipe galleries.
Owner:ZHUHAI DA HENGQIN CITY INTEGRATED PIPE GALLERY OPERATION MANAGEMENT CO LTD

Railway positioning test method and system based on multi-source information

The invention discloses a railway positioning test method and system based on multi-source information, and the method comprises the following steps: a multi-source test system plays a simulation satellite positioning signal, an auxiliary positioning instrument terminal carries out the positioning consistency test of train positioning, the auxiliary positioning instrument terminal designs an inertial navigation smooth correction algorithm, and the inertial navigation information of a train is corrected. The primary positioning test is completed, the multi-source test system plays the simulation satellite positioning signal and the deception satellite positioning signal at the same time, the auxiliary positioning terminal designs a deception diagnosis algorithm, and the final positioning test is completed; according to the scheme, the positioning test of the railway train is realized by adopting multi-source information, and the deception satellite positioning signal is diagnosed by calculating the consistency test coefficient, judging the accuracy of the positioning of the railway train, designing the inertial navigation smooth correction algorithm and eliminating the deviation of the inertial measurement unit when the final positioning test is carried out and designing the deception diagnosis algorithm. The positioning precision of the railway train is improved, and the accuracy of the whole positioning test method is improved.
Owner:HUNAN MATRIX ELECTRONICS TECH

Novel four-fusion integrated terminal shell structure

A novel four-fusible integrated terminal shell structure comprises a first shell, a middle shell and a second shell which are sequentially arranged and detachably connected, the adjacent surfaces of the first shell and the middle shell and the adjacent surfaces of the middle shell and the second shell are matched to form a cavity for placing electrical elements; the surface, away from the first shell, of the middle shell is the same as the surface, close to the middle shell, of the first shell in structure, and the surface, away from the second shell, of the middle shell is the same as the surface, close to the middle shell, of the second shell in structure. A first mounting seat and a second mounting seat are oppositely arranged on the adjacent surfaces of the first shell and the second shell, a first mounting seat and a second mounting seat which are matched with the middle shell are oppositely arranged on the adjacent surfaces of the first shell and the second shell of the middle shell, and a switch assembly is arranged between the adjacent first mounting seat and second mounting seat of different shells. Besides the reference first shell and the reference second shell, the design requirements of terminals with various phase numbers can be freely met by changing the number of the middle shells.
Owner:SHANDONG DEYUAN POWER TECHNOLOGY CORP LTD

Local differential privacy multi-dimensional data publishing method based on Haar transformation

The invention discloses a multi-dimensional data publishing method based on local differential privacy. The method comprises the following specific steps: each terminal converts to-be-published multi-dimensional data into a mean value m and a feature vector E by using Haar transformation; in order to protect the privacy of m, a disturbance mechanism PDP based on a probability density function is designed on the terminal, probability distribution is optimized by using an error minimization strategy, noise errors caused by differential noise injection are relieved, and the mean value practicability is improved; and then each terminal compresses the dimension of the feature vector E with relatively small utility loss by adopting a dimension reduction model based on an error balance strategy. For feature vectors after dimension reduction, designing a global perturbation mechanism GPM for each terminal, and protecting data privacy while maintaining statistical effectiveness by using a private sampling strategy; and finally, the server collects the perturbed mean value m * and the perturbed feature vector E *, and applies inverse Haar transformation in a mode of meeting local differential privacy to generate noisy multi-dimensional data. According to the method provided by the invention, the data dimensions are compressed and key features are extracted by utilizing Haar transformation, so that the data statistical effectiveness can be effectively improved while the local differential privacy is met.
Owner:SOUTHEAST UNIV

Device for monitoring operation of a solenoid valve and a method for monitoring operation of a solenoid valve

A device for monitoring the operation of a solenoid valve. This device includes a circuit for powering the coil of a solenoid valve, with terminals designed for connection to the coil, a power supply switching transistor, and a measurement resistor. The device also includes a microprocessor-based measurement system that includes an analogue-to-digital converter with a consumed current measurement channel connected to the measurement resistor and a consumed current amplified measurement channel connected to the consumed current measurement channel via an adjustable amplifier. The system is designed to deactivate the power supply switching transistor when a voltage exceeding a threshold value is detected on the consumed current measurement channel, and control the gain of the adjustable amplifier so that the signal at the input of the consumed current amplified measurement channel is within the measurement range of this channel.
Owner:DTP SP ZOO

Novel bent terminal connector

The utility model discloses a novel bending terminal connector, and relates to the technical field of connectors. Comprising a male connector body, the male connector body is adaptively provided with a female connector body, the male connector body comprises a first bending terminal assembly, a male connector SR block, a male connector plastic shell and a sealing ring, and the female connector body comprises a second bending terminal assembly, a female connector SR block and a female connector plastic shell. The first bending terminal assembly comprises a male connector first bending terminal, a male connector second bending terminal and a male connector third bending terminal which are inserted in the male connector SR block in a penetrating manner. According to the utility model, the integrated bending design type terminal is adopted, and the terminal is continuously bent at different angles, so that the terminal can realize a positioning function after being assembled, and the terminal can be conveniently and directly used as a connection carrier, thereby simplifying the cable connection mode, saving the working time cost, and effectively reducing the risk of poor operation.
Owner:苏州鲁益电子科技有限公司