40results about How to "Digital" patented technology

The invention relates to a one-dimensional and three dimensional linear time invariant structure work modal parameter identification method based on self-iteration principal component extraction, a linear time-varying structure work modal parameter identification method based on slide window self-iteration principal component extraction, a fault diagnosis and health state detection method based on self-iteration principal component extraction work modal parameter identification, a work modal parameter identification testing device, and a work modal parameter identification device; the work modal parameter identification device can combine the one-dimensional and three dimensional work modal parameter identification method based on self-iteration principal component extraction, the linear time-varying structure work modal parameter identification method based on slide window self-iteration principal component extraction, and the equipment fault diagnosis and health state detection method, thus developing an embedded portable device. The method and device can effectively detecting the linear engineering structure work modal parameters online, can greatly reduce the time and memory expenditure, and can be easily applied on equipment fault diagnose, health monitoring, and system structure online real time analysis and optimization.

The invention discloses a universal miniature satellite-borne digital transponder terminal platform, and belongs to the technical field of aerospace measurement and control. The universal miniature satellite-borne digital transponder terminal platform comprises a radio frequency front end unit and a medium frequency and baseband signal processing unit, the radio frequency front end unit comprisesa receiving and transmitting distribution network module, a receiving channel module, a transmitting channel module and a local oscillator frequency source module, and the medium frequency and baseband signal processing unit comprises a high-speed analog-to-digital conversion module, a low-speed analog-to-digital conversion module, a digital-to-analog conversion module, a signal processing module,a configuration and refresh module, a clock generation module and a communication interface module. The universal miniature satellite-borne digital transponder terminal platform disclosed by the invention is a hardware platform used for realizing the functions of a measurement and control transponder, and the universal miniature satellite-borne digital transponder terminal platform supports a variety of measurement and control systems, has the characteristics of generalization, miniaturization and digitalization, is especially suitable for small satellite systems with high requirements for such factors as development cycle, volume, power consumption, cost and so on, and is an important improvement to the prior art.

The invention discloses a multi-dimensional and multidirectional stress-strain monitoring system. The multi-dimensional and multidirectional stress-strain monitoring system is characterized in that the multi-dimensional and multidirectional stress-strain monitoring system comprises an information collection device (1), an optical fiber monitoring device (2), a data analysis platform (3), a wire collection box (4) and an optical fiber sensing device (5) arranged in a structural body (6) to be monitored, the optical fiber sensing device (5) is used for sensing stress-strain information which is produced by the structural body (6) to be monitored under the action of external factors, the optical fiber monitoring device (2) is connected with the optical fiber sensing device (5) through the wire collection box (4) and conducts distributed type high-precision monitoring on the structural body (6) to be monitored, the information collection device (1) is connected with the optical fiber monitoring device (2) and used for capturing and storing optical fiber monitoring data and digitizing and visualizing monitoring information, and the data analysis platform (3) is connected with the information collection device (1) and used for providing the data preparation function, the graph viewing function, the data basic analysis function and the stress calculation function for a user. The system has extremely strong operability and strong realizability in practical use.

The invention discloses vanadium dioxide ink for inkjet printing. The vanadium dioxide ink is prepared from the following components: nano vanadium dioxide powder, a dispersing agent, a bonding agent and a diluent, wherein the diluent is a mixed solution of dimethylbenzene and ethyl acetate or a mixed solution of the dimethylbenzene and butyl acetate. A preparation method of the vanadium dioxide ink disclosed by the invention comprises the following steps: carrying out mixed ultrasonic dispersion on the nano vanadium dioxide powder and the diluent to obtain vanadium dioxide dispersing liquid; carrying out mixed dispersion and grinding on the vanadium dioxide dispersing liquid and the dispersing agent in a sand mill; then adding the bonding agent, and continuously grinding in the sand mill until the materials are uniformly mixed, thus obtaining the vanadium dioxide ink for the inkjet printing. According to the vanadium dioxide ink disclosed by the invention, by regulating and controlling the particle size, stable dispersion, viscosity and surface tension of the nano vanadium dioxide ink, the vanadium dioxide ink suitable for the inkjet printing is successfully prepared; according to the nano vanadium dioxide ink disclosed by the invention, the smoothness of an inkjet printing process is ensured, a liquid drop shape can be formed during printing, a good printing effect is realized, and the requirement on film forming property of a printer is met.

The invention discloses an online identification method for working mode parameters of a linear time-varying structure of principal component analysis of eigenvalue eigenvector recursion with a forgetting factor. According to the method, thoughts of ''the forgetting factor'', ''online recursion'', ''eigenvalue eigenvector recursion'' and ''matrix rank-1 correction'' are introduced based on identification of working mode parameters of a linear time-invariant structure of classic principal component analysis, so that a time-varying transient modal vibration shape and an inherent frequency of the linear time-varying structure can be identified only from a non-stationary vibration response signal. An eigenvalue eigenvector is directly subjected to online recursion updating, so that the shortcoming that a principal component model needs to be repeatedly updated in a conventional method for identifying time-varying working mode parameters of recursive principal component analysis is overcome, the algorithm time and the space complexity are shortened and lowered, online real-time time-varying working mode parameter identification is realized, and dynamic change characteristics of the working mode parameters of the structure can be effectively monitored; and the method can be used for equipment fault diagnosis, health monitoring and system structure analysis and optimization.

The invention relates to the technical field of biomedical metal materials and oral implantation medical instruments, and provides a bone trabecula porous tantalum dental implant and a preparation method thereof. The bone trabecula porous tantalum dental implant provided by the invention has a cylindrical structure and sequentially comprises a top functional area, a middle functional area and a bottom functional area from top to bottom. The top functional area is of a compact structure, the middle functional area has a bionic bone trabecula porous structure, and the bottom functional area hasa compact structure. The bone trabecula porous tantalum dental implant is integrally prepared by taking pure tantalum or medical tantalum alloy powder as a raw material through an additive manufacturing technology. The bone trabecula porous tantalum dental implant provided by the invention is high in friction force, close to human bone in strength and modulus, excellent in bone ingrowth effect, high in implantation stability and long in service life, is of an integrated structure, and has no risk of delamination and separation during implantation.

The invention discloses a method and system for identifying working mode parameters of a time-invariant structure. A method with isometric feature mapping and for identifying the working mode parameters of the three-dimensional time-invariant structure is adopted, can well express the nonlinear feature of the three-dimensional structure since the neighbor relation among near-earth distance measurement gauging points is adopted for an isometric feature mapping algorithm, has a good effect of identifying the working mode parameters of the complicated three-dimensional structure, and can be usedfor equipment fault diagnosis, health monitoring and system structure analysis and optimization. The invention further provides a method for identifying the working mode parameters of a Sanger neuralnetwork time-invariant structure. A method for identifying the working mode parameters of parallel pivot element extracting based on the Sanger neural network is used. Multi-order principal componentsare obtained through parallel iteration of the learning rate and the learning rule and easily embedded into multi-core hardware, and the method and system have high engineering value.

The invention relates to a carrier rocket hot commissioning control system which is composed of a back-end test device, a front-end test device, and a rocket-borne system device. The back-end test device and the front-end test device carry out data communication via the Ethernet. The front-end test device and the rocket-borne system device carry out data communication mainly via a 1553B bus. The back-end test device issues a control instruction to the front-end test device according to the test process. The front-end test device receives and executes the control instruction or forwards the control instruction to the rocket-borne system device for execution. The front-end test device collects a feedback signal thereof and a feedback signal of the rocket-borne system device at the same time, and sends the feedback signals to the back-end test device for display. The carrier rocket hot commissioning control system of the invention has the characteristics of being digital, intelligent, integrated and universal.

This invention discloses a kind of temperature controlling device of super-low temperature refrigerator. The pressure sensor collects varieties of pressure signals of super-low temperature refrigerator system and connects to main controlling board interface through heat resistance module and data conductive wire. After centralized processing all the signals, the main controlling board controls high temperature compressor and low temperature through relay. The liquid crystal operating screen connects to R232 interface on the main controlling board through data line 232 cable. The signal- sending end connects to the relay and alarm. The main controlling board PLC communicating interface connects to local computer or network. The temperature in the box is automatically controlled. The temperature in the box, the temperature of absorbed air and the environmental temperature can be automatically displayed. This invention can also alarm under super high temperature and super low temperature. It also alarm when refrigerating system has troubles or power turns off. This invention can use printer to print. The computer can be used to remote control many medical super-low temperature refrigerator through data bus or internet.

The invention discloses a power monitoring system of a fire fighting apparatus. The power monitoring system comprises a fire fighting apparatus power monitor and sensors, the sensors comprise a single-phase voltage/current sensor, a voltage sensor and a current sensor, the fire fighting apparatus power monitor is communicated with the sensors through a CAN bus, and a Modbus-RTU communication protocol is provided for the outside. The power monitoring system has the advantages of being reliable, real-time, digitalized, intelligent, networked and automatic and achieving continuous monitoring, the condition of a power source of a monitored device is reflected in real time, and is displayed in a centralized mode, and therefore the emergent condition that when a fire disaster happens, due to the power failure, the fire fighting apparatus cannot normally work can be effectively avoided, and the reliability of a fire fighting linkage system is ensured to the greatest extent.

The invention provides a body building data monitoring system based on the Internet of Things and cloud computing. The system is composed of a body building data monitoring center and multiple body building monitors; the body building data monitoring center comprises a wireless gateway, a cloud server, a body building instructing and serving device and a body building database; and each body building monitor comprises a wireless communication module, a motion state monitor, an energy consumption monitor, a body building instructor, a card reader, a sports equipment controller and a microprocessor. The system has the advantages of being simple in structure, intelligent, digital, humanized, secure, reliable and the like and can learn the motion situation and the energy consumption conditionof a sporter in real time; and meanwhile the system can compute and process collected massive information through a cloud computing platform to propose a targeted, personal and scientific body building instruction for each body builder.

The invention belongs to the technical field of digital imaging, particularly relates to a ship intelligent navigation digital sand table system based on an electronic chart, and aims to solve the problem that a ship navigation environment of a specified sea area cannot be visually displayed in a three-dimensional space in the prior art. According to the invention, the digital sand table interaction interface and the three-dimensional digital sand table model are generated according to the electronic chart data and the target ship information data; instruction information sent by a user is received based on the digital sand table interaction interface, the digital sand table model is dynamically adjusted in real time according to the instruction information, and the three-dimensional digital sand table model is dynamically displayed through the virtual scene display unit. Visual cognition display is performed on the ship navigation environment of the designated sea area in the three-dimensional space so that the system has the characteristics of digitization and intellectualization; the digital sand table model is dynamically adjusted according to the instruction information data,the ship operation state is visually displayed from all directions, and interestingness and interactivity are improved.

The invention discloses a building information model, method and device for a construction project and a settlement system. The building information model comprises a component metering module, a progress metering module, a project monitoring module, a project cost module and a settlement information module, and is used for acquiring the real object quantity, the demand quantity, the constructionprogress, the contract change information and the cost information of the components in the construction project so as to generate settlement information. The building information model is easy to track in the process of generating settlement information, intermediate data can be easily called out to be processed by a construction project delegating party, a supervisor and the like, and the effectof leaving marks step by step is achieved. Wherein the data processed by the building information model is BIM calculation amount, so that the problems of long calculation period, easiness in makingmistakes and easiness in causing inconsistency in multi-party verification in the prior art are avoided; and the building information model is easy to execute through a computer program, and has the effects of high automation degree and high efficiency. The building information model is widely applied to the technical field of constructional engineering informatization.

The invention discloses an electric ship power grid monitoring protection device comprising multiple switching power supplies, a direct-current transmitter, a signal processing unit, a PPU device, a reinforced all-in-one machine, an alarm unit, and a control unit. The direct-current transmitter acquires the voltage and current of a direct-current power grid in real time. The signal processing unit transmits voltage signals, current signals and power parameters of the direct-current power grid to the reinforced all-in-one machine. The PPU device acquires the effective values of the three-phase voltage and current of an alternating-current power grid in real time, and transmits the data to the reinforced all-in-one machine. The reinforced all-in-one machine processes and displays the data, and sends an alarm signal to the alarm unit. The control unit controls the work of power supply uninterrupted conversion and current limiting protection devices so as to realize power off of branch circuits and current overload protection. The invention further provides a power grid endurance monitoring method. By adopting the device and the method, safe and stable operation of the whole ship power grid can be ensured.

The invention discloses a small-caliber artillery dynamic tracking precision detection device and relates to the technical field of an artillery detection device. The detection device comprises a processor, a calibration instrument, a rifling high-precision camera, a fire control high-precision camera, a gun barrel inner bore self-centering device, a power supply module and a man-machine interaction module. The calibration instrument, the rifling high-precision camera and the fire control high-precision camera are connected with the signal input end of the processor; the rifling high-precision camera is arranged to an artillery barrel rifling place through the barrel inner bore self-centering device; the power supply module is connected with power supply input ends of modules needing power supply of the detection device; and the man-machine interaction module is in both-way data communication with the processor and is used for inputting data and displaying data. The detection device has the advantages of digitalization, full-automatic measurement, self calibration, high precision, and accurate space range measurement and the like.

The invention discloses a high-precision binocular vision measurement system and method for a closure pipe. The system comprises a binocular high-precision three-dimensional measurement system, a coaxial device and a target, and is characterized in that the coaxial device is arranged in a flange hole of a flange, and the target is inserted into the coaxial device. The coaxial device comprises a mounting plate, a countersunk head screw and a cone frustum. The countersunk head screw and the cone frustum are mounted on the two sides of the mounting plate respectively; a coaxial cone hole is coaxially formed in the cone frustum; the cone frustum and the countersunk head screw are coaxially arranged; and an industrial strong magnet is mounted on the surface of one side of the countersunk head screw of the mounting plate. The target comprises a body. A measuring head is arranged at the end of the body; at least two target plates are arranged on the body; and three or four round holes are formed in each target plate. The system can measure the detailed spatial position of a to-be-measured flange, including the rotation angle and the deflection angle of the flange, can automatically read measurement data through software and carry out automatic calculation, realizes high-precision measurement of the closure pipe, and has the advantages of digitization, portability, high accessibility and the like.

The invention relates to a glass intelligent distribution device, which includes a raw film production line on the upper floor and a deep processing production line on the lower floor. Each raw film production line is equipped with a glass unloading robot and a glass shelf on one side, and a data tracking chip is installed on the glass shelf. , there is an elevator between the upper side building and the lower floor, an automatic navigation trolley is installed between the elevator and the original film production line, the conveying track and distribution track on one side of the deep processing production line, the loading and conveying track is set correspondingly to the elevator, and the conveying track is equipped with rail low-pressure guiding trolley, and a glass buffer conveying device and a return conveying device are installed between the sending rail and the distribution rail; the distribution rail is connected to the double-station rail trolley, and the double-station rail trolley is connected to the glass loading robot on one side of each deep processing production line correspond. The advantages of the present invention: the device adopts MES system control, has high automation and intelligence, does not need personnel to participate in the whole transportation process, has high efficiency, low operating cost, and ensures continuous and orderly production.

The invention discloses a flexible exoskeleton integrated motor control driver and a motor. The motor control driver comprises a motor control circuit, a high-speed photoelectric coupler, a logic gate circuit, a motor drive circuit and a motor power amplification circuit which are connected in sequence; the motor control circuit is connected with a potentiometer used for collecting the rotation of the motor through an AD sampling circuit; the power supply end of the motor power amplification circuit is connected with the power supply through a filtering rectification circuit; and the signal end of the motor power amplification circuit is connected with a controlled motor. The potentiometer signal of rotation of the controlled motor is collected through the AD sampling circuit; the collected signal is filtered, amplified, sampled, maintained, quantized and coded through the motor control circuit, so that AD conversion can be completed, and a stable PWM pulse and a forward and reverse rotation signal F/R are output; after an output control signal passes through the high-speed photoelectric couple and the logic gate circuit; a corresponding field effect transistor is controlled to be conducted through the motor drive circuit and the motor power amplification circuit, so that the power-on control of the controlled motor is realized; and therefore, the purpose of driving the motor to operate is achieved.

The invention discloses an excess pressure controller capable of automatically stopping the alarm function. The excess pressure controller capable of automatically stopping the alarm function comprises a staircase, vestibules, a signal data acquisition unit, a signal data analysis and processing control unit, a system management unit, a dual-power switch and electric switches, wherein the outer side of differential pressure measurement and control instruments are connected with a signal line, and the other end of the signal line is connected with an air valve control box. The air valve controlbox is connected with a bypass pressure release valve through a power line, a bypass pipe is fixedly installed on the outer side of the bypass pressure release valve, a pressurizing air supply channel is fixedly connected to the outer side of the bypass pressure release valve, a pressurizing air feeder is installed at the upper end of the pressurizing air supply channel, and a pressurizing air supply opening is formed in the outer side of the pressurizing air supply channel. According to the excess pressure controller capable of automatically stopping the alarm function, a SKYK excess pressure controller and an alarm device are monitored through a SKDY intelligent excess pressure monitoring host in the system management unit, the normal working state of the alarm device can be effectivelyguaranteed, and therefore automatic stopping of the alarm function can be normally completed.