41results about How to "Realize real-time calibration" patented technology

The invention discloses a method for real-time calibration of air quality data using error transmission, which is characterized in that: firstly, the model is initialized, and then national standard data and Zhuoyi equipment data of the latest time period are collected, and kriging interpolation is performed on the collected national standard data , to obtain the national standard interpolation data whose sampling frequency is equal to that of Zhuoyi equipment; secondly, to model the national standard interpolation data and Zhuoyi equipment data based on the Bagging model; Perform data calibration to obtain the calibration value; finally wait for the collection of the latest national standard data, and update the calibration error based on the newly collected national standard data, and pass the error to the next model. This method performs model verification on the measured data in Yixing. This method can effectively improve the precision and accuracy of low-precision equipment, and can be deployed regionally and applied to the actual production environment.

The invention relates to the field of heavy-water reactor fuel element bent pipe gauge calibration, and specifically discloses a heavy-water reactor fuel element bent pipe gauge calibration gauge and a field calibration method. The calibration gauge is characterized in that the calibration gauge comprises a diameter calibration gauge and a bending calibration gauge; the diameter calibration gauge includes a square bar and rectangular solids arranged at the two ends of the square bar; and the bending calibration gauge includes a reference gauge, a spherical gauge, and a wedge block gauge fixedly arranged between the reference gauge and the spherical gauge. The upper limit of diameter, the lower limit of diameter and the bending of a heavy-water reactor fuel element bent pipe gauge can be calibrated using the diameter calibration gauge and the bending calibration gauge. The quality problem of product misjudgment due to misalignment of a heavy-water reactor fuel element bent pipe gauge is avoided effectively. The manufacturing quality of nuclear power fuel elements is controlled effectively.

The invention provides a high-temperature calibration device for microwave dielectric material testing and a calibration method thereof. The device includes: a vector network analyzer, and two sets of waveguides respectively connected to the vector network analyzer. Joints, cooling waveguides, high-reflection and straight-through conversion waveguides, heat-insulated waveguides, high-temperature waveguides, short-circuit boards, high-reflection and straight-through conversion waveguides are slotted into high-reflection inserts to form a short circuit; the calibration method includes opening the test software and opening a slot in the waveguide Control the insertion of the high-reflection insert, run the test software for automatic calibration, test the reflection coefficients S11r and S22r in the two high-temperature waveguides at room temperature, test the S11h and S22h after loading the medium sample to be tested at high temperature, and test the S11h Carry out correction; Utilize S ' 11 after microwave loss correction, calculate the complex dielectric constant of the medium sample to be tested at temperature T; This device and method can be applied in the microwave material dielectric property high-temperature test system, can further improve The test accuracy of the test system.

Disclosed in the invention is an external-conical-surface-contained standard calibration rotor for a dynamic balancing machine. The calibration rotor comprises a mandrel including a left support segment, an interference fit segment, a limiting segment, a clearance fit segment, a thread segment, and a right support segment from left to right; the left support segment is supported at a balancing machine bearing rack; the interference fit segment is in an interference fit relation with a center of a left end cover; the limiting segment is in an axial limiting mode; the clearance fit segment is in a clearance fit relation with a center of a right end cover; and the thread segment cooperates with a locking nut. Assembling rings are formed on opposite end surfaces of the left end cover and the right end cover; and limiting plates are formed on the outer walls. The outer rings of the assembling rings are conical surfaces; and a plurality of threaded holes cooperating with a test mass unit are formed in the assembling rings in the radial direction. According to the invention, with the left end cover having the external conical surface and the right end cover having the external conical surface as well as threaded holes arranged on the assembling rings, real-time calibration of the dynamic balancing machine is realized; and with the external conical surfaces and the limiting plates, line-contact positioning is carried out on a composite-material-based cylinder, thereby minimizing a system measurement error caused by the initial unbalancing value of the positioning tool itself.

The invention relates to a carrier navigation attitude measurement method based on geomagnetic information updating. The method comprises: carrying out initialization; calculating a magnetic declination angle; acquiring data at a next time; measuring navigation attitude information at a next time; updating magnetic declination angle information, and performing the measurement method continuously.According to the invention, data are measured based on an accelerometer, a gyroscope and a magnetic sensor; and on the basis of a discretized Kalman filter algorithm, the magnetic declination angle information is estimated and updated in real time. Therefore, a problem that the course angle information distorts and thus is not reliable due to the magnetic declination angle change caused by ferromagnetic materials like magnetic minerals, reinforcing steel bars and the like is solved.

The invention relates to the technical field of analog integrated circuits, in particular to a calibration circuit design method for pipeline ADCs. The present invention mainly includes: establishing a pipelined ADC behavior level model, constructing the quantitative relationship between ADC analog circuit design parameters and digital calibration circuit design parameters and ADC performance; obtaining analog circuit design parameters and digital calibration circuit design that minimize ADC power consumption parameters; design the circuit according to the obtained parameters; obtain the calibration coefficient through the calibration algorithm and the reference DAC; write the calibration coefficient into the digital calibration circuit. The beneficial effect of the present invention is that the calibration circuit is greatly simplified, and all of them are implemented on-chip, so the power consumption and area are extremely small, compared with the traditional on-chip background calibration circuit, the power consumption and area are saved by more than 50%; the calibration circuit only increases the ADC core 10% of the area and 5% of the power consumption, so basically no additional chip area and power consumption; at the same time, the calibration system can be adjusted to adapt to different working environments.

The invention discloses a method and system for real-time calibration of frequency modulation continuous wave linearity in terahertz imaging. The method comprises: mixing an echo signal reflected by a measured target with a terahertz signal to obtain a baseband signal; dividing the baseband signal into Carry out calibration calculations for two channels; one of them filters out coupling signals through band-pass filtering to obtain baseband signals carrying target information, and the other channel is used as real-time calibration data to calibrate each pulse in real time during calibration calculations; and filter out random signals before calibration calculations. Phase noise and converting acquired data to complex data. The invention can calibrate each pulse in real time, ensures the time consistency of the calibration data and the target echo data, realizes the real-time calibration, and filters out the coupling signal at the same time, thereby ensuring the system sensitivity. It has a good effect in the terahertz imaging measurement where the random phase noise is large and the measurement accuracy is high.

The invention discloses a method for measuring the diameter of a Czochralski single crystal, which comprises the steps of: providing a guide tube arranged above the liquid surface of molten silicon; collecting a single crystal growth image through a visual system, and the single crystal growth image includes a single crystal growth aperture and a single crystal growth aperture. The projection of the lower opening of the draft tube on the molten silicon liquid surface; and the actual value of the inner diameter of the lower opening of the draft tube is obtained, and the diameter of the single crystal is calibrated by using the inner diameter of the lower opening of the draft tube. The invention realizes the full-automatic calibration of the single crystal diameter, improves the calibration precision, and is applicable to all single crystal furnace platforms.

The invention provides a comprehensive real-time calibration method for a multi-channel digital anti-interference antenna system, which can effectively increase output signal to noise ratio of the system. The method is implemented by the following technical scheme and comprises the following steps: connecting an antenna array surface, channels and a signal processing plate between a power supply and a computer to form a self-calibration antenna system; transmitting a near-field signal and a far-field signal by using a transmitting antenna and a standard antenna at different time, calculating difference between amplitude and phase of two groups of signals output by a receiving channel and storing the difference value into FLASH; controlling the channels and the signal processing plate by using a computer through a serial port so as to be in a calibration state and performing system calibration by comparing the amplitude and the phase of the signal of each channel by a calibration algorithm stored in a field programmable gate array (FPGA); and providing analog inertial navigation information to the signal processing plate by using the computer through the serial port, automatically adjusting the main beam of the antenna according to the inertial navigation information by an anti-interference algorithm in the FPGA, and inhibiting the antenna to receive each external interference signal. According to the method, high efficiency and sustainability of system operation are guaranteed.

The invention discloses an industrial control touch screen real-time calibration method, device and equipment based on touch pressure. The method comprises the following steps: acquiring a touch pressure value of the industrial control touch screen in a working mode; determining that the current touch operation conforms to a preset operation according to the touch pressure value; and controlling the industrial control touch screen to be switched from a working mode to a touch calibration mode. By obtaining the touch pressure value in the working mode, the industrial control touch screen is quickly triggered to be switched from the working mode to the touch calibration mode, real-time calibration of the industrial control touch screen in the working mode is achieved, assistance of externaltools is not needed, operation is easy and convenient, and user experience is improved.