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31results about How to "Measurable" patented technology

Effective stress level test device and method of vertical prestressed reinforcement

The invention discloses an effective stress level test device and method of a vertical prestressed reinforcement. An ARM (Advanced RISC Machines) processor is connected with an ultrasonic pulse generator; a pulse signal emitted from the ultrasonic pulse generator is transmitted to an ultrasonic transducer via a boosted circuit and a transmitter circuit; the ultrasonic transducer transmits the ultrasonic wave to a data register via a programmable filter, a programmable amplifier and an A/D (analog-to-digital) converter; collected signals are sent to a DSP (Digital Signal Processor) by the data register; the DSP stores the signals in an RAM (Random-Access Memory) storage area; the ARM processor is connected with a memory, a keyboard, a display, the programmable amplifier, the programmable filter, the RAM storage area and a temperature measurement circuit; and the temperature measurement circuit is connected with a temperature sensor. The device has the characteristics of no loss, high speed, high accuracy and low cost, especially can quantify the influence of temperature on a stress measurement result, can correct the stress level test error of the vertical prestressed reinforcement so as to obtain the effective stress level value of the vertical prestressed reinforcement with the engineering accuracy.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT

Method for constructing demand response scheduling evaluation system of simulated peak-shaving unit

The invention discloses a method for constructing a demand response scheduling evaluation system of a simulated peak-shaving unit. The method comprises: determining demand response scheduling evaluation time; taking the simulated peak-shaving unit as a target, and constructing the three-layer demand response scheduling evaluation system of the simulated peak-shaving unit from time dimension, capacity dimension and object dimension, wherein a first layer is a totality index, a second layer is a generality index, and a third layer is a specificity index; taking an ideal peak-shaving curve as an evaluation target, and constructing the demand response scheduling evaluation system of the simulated peak-shaving unit; and performing analysis on an index system with an evaluation method of an attribute interval recognition theory, and performing scheduling evaluation calculation. The demand response scheduling evaluation system of the simulated peak-shaving unit, constructed with the method, has comprehensiveness, independence, easy measurement property, flexibility and practicality, is helpful for more visually understanding a demand response scheduling result and a user response state in power grid scheduling, and provides a scientific and accurate basis for implementing demand response and settlement.
Owner:STATE GRID CORP OF CHINA +5

Component hydroforming springback accurate compensation method based on liquid volume control

ActiveCN108994141AShorten the debugging cycleAccurate springback compensationVolume variationEngineering
The invention discloses a component hydroforming springback accurate compensation method based on liquid volume control, and relates to a metal curved plate forming manufacturing method. According tothe component hydroforming springback accurate compensation method, a plate liquid male die deep drawing forming method is utilized, the difference between the theoretical volume of a target part andthe volume of an actual part after springback is calculated, a die is elastically deformed by adjusting and controlling the volume of injected liquid, the elastic deformation and the springback amountof the die are controlled to be equal, the springback of a curved plate is accurately compensated, and the size of a component meets the design requirement. According to the component hydroforming springback accurate compensation method, a die does not need to be repaired, and springback caused by plate batch changes and die machining errors can be accurately compensated on line in place. According to the component hydroforming springback accurate compensation method, the springback amount compensation is realized by adopting measurable and numerically-controlled liquid volume variation, theadvantages of high compensation precision, simple process, high efficiency, short period and low production cost are achieved, and the requirements of precise springback compensation and high profileprecision control of curved plates in different batches can be met.
Owner:HARBIN INST OF TECH

Dynamic measurement method and instrument of laser spots

The invention provides a dynamic measurement method and instrument of laser spots. The dynamic measurement method comprises the following steps of: (1) respectively detecting received light intensities by all pixels of a CCD (Charge Coupled Device); (2) marking light intensity data detected by all the pixels as a matrix I, and obtaining Sigma x, Sigma y, xc, yc, A and I0 by utilizing a linear least square method on the basis of a laser spot light intensity distribution formula according to the actually-measured light intensity data matrix I and corresponding coordinate values of horizontal and vertical axis of all the corresponding pixels, wherein xc and yc respectively refer to coordinate values of the horizontal and vertical axis of a light spot center, Sigma x and the Sigma y respectively refers to 1 / e radiuses of the horizontal and vertical axis, A refers to amplitude and I0 refers to dark noise; (4) obtaining a modified vector D of a reference vector P(k) by using a Newton iteration method, and calculating P(k+1)=P(k)+D; and (5) repeatedly executing the step (4) till the iteration frequency reaches a preset value K or the error of the reference vector P(k) which is obtained by iteration for kth times is smaller than a preset tolerance value, and taking all elements of the reference vector P(k) at the time as a measured laser beam parameter. The invention further provides a corresponding dynamic measurement instrument of laser spots. The dynamic measurement method and instrument of the laser spots have the advantages of high measuring speed, high precision and large dynamic range.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Displacement sensing device and application thereof

The invention belongs to the technical field of measuring equipment, and particularly relates to a displacement sensing device and application thereof. An intelligent inhaul cable with a built-in optical fiber sensor is adopted in existing inhaul cable detection and monitoring, the state of the optical fiber sensor is uncertain, and data reliability is insufficient in the application process. According to the intelligent inhaul cable with the built-in magnetic flux inner sensor, due to the fact that the sensor derives inhaul cable force through inhaul cable section area changes, the state of the inhaul cable cannot be effectively analyzed when the inhaul cable is rusted or part of the section of the inhaul cable quits work due to other reasons. The invention provides a displacement sensingdevice which comprises a displacement sensing assembly and a power supply collection assembly which are connected with each other, the displacement sensing assembly comprises a displacement sensor, asensing steel wire and a measuring steel wire, the displacement sensor is connected with one end of the sensing steel wire, and the other end of the sensing steel wire is connected with one end of the measuring steel wire. And a convenient replacement condition is provided, so that the production, transportation, installation, use and subsequent maintenance of the intelligent inhaul cable are more convenient.
Owner:尹恒

Remote control robot for automatic driving test and control method therefor

The invention discloses a remote control robot for an automatic driving test and a control method therefor. The robot comprises a robot model and a remote controller; the robot model is composed of a trolley and a humanoid mold fixed on the trolley; the trolley comprises a control module, a detection module, a first sending module and a first receiving module; the first sending module is connected with the detection module; the first receiving module is connected with the control module; all parts of the humanoid mold are covered with copper foils with certain thickness and density; the remote controller comprises a control signal input module, a display module, a second sending module and a second receiving module; the second sending module is connected with the control signal input module; and the second receiving module is connected with the display module. The reflectivity of a simulated real person to a millimeter wave radar is obtained by covering the humanoid mold with the copper foils, the test requirements of the recognition capability and the intelligent decision-making level of the self-driving automobile are met, the test safety and accuracy are high, and the test precision and the test efficiency are improved.
Owner:福建中科云杉信息技术有限公司

Simulation device for hydrothermal filling of fracture zones

The invention belongs to the field of petroleum exploration and development, and particularly relates to a crack band hydrothermal filling simulator. The crack band hydrothermal filling simulator comprises a mineral crystallization precipitator and a magnetic stirring reaction kettle, wherein the mineral crystallization precipitator is a crack band hydrotherm chemical reaction region, saturation chemical reaction hydrotherm is prepared in the magnetic stirring reaction kettle, by means of heating, pressurizing and accelerating, the saturation chemical reaction hydrotherm enters rock cracks in the mineral crystallization precipitator for chemical precipitation, undersaturation hydrotherm obtained after reaction returns to the magnetic stirring reaction kettle and is supplemented with a chemical reagent to become the saturation solution, and the steps are circulated repeatedly. According to practical environment of petroliferous basin reservoir stratum, solution corrosion and precipitate experiments can be carried out in fracture and crack bands of the petroliferous basin reservoir stratum at normal temperature and pressure conditions, and corrosion and precipitate mechanisms of deep hydrotherm and low-temperature stratum water caused by tectonic activity in the crack band and mutual action with the reservoir stratum are simulated.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A device and method for measuring saturated vapor pressure

The invention relates to a device and a method for measuring saturated vapor pressure. The method comprises the steps of firstly, starting a semiconductor chip to minimize the temperature of a quartz glass tube, vacuumizing and then directly enabling the vacuumized quartz glass tube to be connected with gas phase fluid to be measured; condensing the gas phase fluid to be measured in the quartz glass tube, and stopping the addition of liquid to be measured when the height of the fluid to be measured in the quartz glass tube is 20-80% of that of the quartz glass tube; changing the set temperature of a temperature controller, and adjusting the temperature of a soaking metal block so as to control the temperature of the fluid to be measured in the quartz glass tube; when a pressure sensor and a temperature sensor stably output signals, acquiring the temperature of the fluid to be measured and the corresponding saturated vapor pressure. After the device and the method are adopted, the whole cooling, heating and measuring processes can be completed only within 5-10min, so that the temperature control waiting time of a thermostatic bath in the traditional experiment is greatly shortened, and the measurement efficiency is increased. A circulating bath of a thermostatic bath does not need to be additionally arranged, and a sample introduction process can be realized by means of a refrigeration function of the semiconductor chip, so that the cost of a laboratory table is lowered, and the space of a laboratory is saved.
Owner:XI AN JIAOTONG UNIV +1

Dynamic measurement method and instrument of laser spots

The invention provides a dynamic measurement method and instrument of laser spots. The dynamic measurement method comprises the following steps of: (1) respectively detecting received light intensities by all pixels of a CCD (Charge Coupled Device); (2) marking light intensity data detected by all the pixels as a matrix I, and obtaining Sigma x, Sigma y, xc, yc, A and I0 by utilizing a linear least square method on the basis of a laser spot light intensity distribution formula according to the actually-measured light intensity data matrix I and corresponding coordinate values of horizontal and vertical axis of all the corresponding pixels, wherein xc and yc respectively refer to coordinate values of the horizontal and vertical axis of a light spot center, Sigma x and the Sigma y respectively refers to 1 / e radiuses of the horizontal and vertical axis, A refers to amplitude and I0 refers to dark noise; (4) obtaining a modified vector D of a reference vector P(k) by using a Newton iteration method, and calculating P(k+1)=P(k)+D; and (5) repeatedly executing the step (4) till the iteration frequency reaches a preset value K or the error of the reference vector P(k) which is obtained by iteration for kth times is smaller than a preset tolerance value, and taking all elements of the reference vector P(k) at the time as a measured laser beam parameter. The invention further provides a corresponding dynamic measurement instrument of laser spots. The dynamic measurement method and instrument of the laser spots have the advantages of high measuring speed, high precision and large dynamic range.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Effective stress level test method of vertical prestressed reinforcement

ActiveCN102636307BIntuitive real stress statePlay a role in checkingApparatus for force/torque/work measurementStress measurementRebar
The invention discloses an effective stress level test device and method of a vertical prestressed reinforcement. An ARM (Advanced RISC Machines) processor is connected with an ultrasonic pulse generator; a pulse signal emitted from the ultrasonic pulse generator is transmitted to an ultrasonic transducer via a boosted circuit and a transmitter circuit; the ultrasonic transducer transmits the ultrasonic wave to a data register via a programmable filter, a programmable amplifier and an A / D (analog-to-digital) converter; collected signals are sent to a DSP (Digital Signal Processor) by the data register; the DSP stores the signals in an RAM (Random-Access Memory) storage area; the ARM processor is connected with a memory, a keyboard, a display, the programmable amplifier, the programmable filter, the RAM storage area and a temperature measurement circuit; and the temperature measurement circuit is connected with a temperature sensor. The device has the characteristics of no loss, high speed, high accuracy and low cost, especially can quantify the influence of temperature on a stress measurement result, can correct the stress level test error of the vertical prestressed reinforcement so as to obtain the effective stress level value of the vertical prestressed reinforcement with the engineering accuracy.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT

Electric vehicle cluster storage load scheduling evaluation system and evaluation method

The invention relates to an electric vehicle cluster storage load scheduling evaluation system. An electric vehicle scheduling center acquires regional power grid capacity, user load capacity and a power grid operation state; the electric vehicle dispatching center calculates the maximum charging capacity and the maximum dischargeable capacity of all the electric vehicles in the area; the electricvehicle scheduling center respectively transmits the actual capacity index value, the actual vehicle service time index value, the actual safety operation index value, the scheduling plan index and the actual scheduling economic index value of the electric vehicle cluster storage load scheduling system to the capacity index value and the vehicle service time index value of the electric vehicle cluster storage load scheduling system; and comparison normalization processing is conducted on the safe operation index value, the scheduling plan index and the scheduling economic index value to obtain an electric vehicle cluster storage load scheduling evaluation radar map. According to the method, scientific and reasonable evaluation of the storage load scheduling strategy of the electric vehicle is realized.
Owner:国网电力科学研究院武汉能效测评有限公司 +3

Interference source individual identification method based on phase noise characteristics

InactiveCN113203990ARealization of individual identificationUniversalWave based measurement systemsPhase noiseFeature Dimension
The invention relates to an interference source individual identification method based on phase noise characteristics, and belongs to the technical field of target identification. The method comprises the steps: step 1, establishing a radar active interference signal model and obtaining an active interference signal; step 2, preprocessing the active interference signal to obtain a preprocessed interference signal; step 3, performing first feature extraction and feature dimension reduction on the preprocessed interference signal to obtain a signal after first dimension reduction; step 4, performing classification identification on the signal after primary dimension reduction obtained in the step 3, and outputting an interference type; step 5, aiming at deceptive interference, extracting phase noise characteristics of the deceptive interference; step 6, performing secondary feature extraction and feature dimension reduction on the phase noise characteristics to obtain a signal after secondary dimension reduction; and step 7, performing classification identification on the signal after secondary dimension reduction obtained in the step 6, and outputting an interference source type of deceptive interference. According to the method, the phase noise features based on radiation source signal envelope have differential fine features, and the method has universality, stability, uniqueness and testability.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
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