16results about How to "Achieve calibration" patented technology

The application relates to an active band-pass filter Q value calibration circuit, which comprises an LDO circuit, a calibration signal filter circuit and a Q value calibration detection circuit; wherein the output ends V1 and V2 of the LDO circuit supply power to the calibration signal filter circuit, the output end VREF of the LDO circuit provides a reference voltage for the Q value calibration detection circuit, the output end signals VBP and VBN of the calibration signal filter circuit serve as inputs of the Q value calibration detection circuit, and the output signal VRZ of the Q value calibration detection circuit is outputted <n:0>The control signal is used as a calibration signal to filter circuit. The application can effectively tune the Q value of the filter and improve the consistency of the chip. Compared with the traditional active band-pass filter Q value calibration circuit, the application has the characteristics of small implementation difficulty and high integration.< / n:0>

The utility model relates to a color printing calibration technical field, especially a kind of printed matter automatic calibration device, including support frame, its top one side is equipped with first conveyor belt, and its top other side is equipped with two parallelly placed second conveyor belt.The utility model has the advantages that by being provided with first conveyor belt and three motorized rollers, while two mounting plates are provided with electric cylinder, mounting bracket, horizontal plate and laser sensor, and then paperboard enters from first conveyor belt, two guide plates are convenient for limiting paperboard, subsequently multiple guide wheels limit paperboard, when paperboard blocks the laser sensor on one side, the electric cylinder on the corresponding side extends, paperboard is pushed to slide horizontally by mounting bracket and multiple guide wheels, multiple guide wheels are located at the two sides of paperboard, limit the advance of paperboard, to realize the calibration of paperboard position, overall structure is simple, convenient to use, to effectively solve the problems existing in the prior art.

This disclosure presents embodiments of a laser galvanometer distortion calibration method, apparatus, device, and medium. One specific implementation of the method includes: performing a dual-pose scan on a target plate to generate a first image set and a second image set; generating a first set of center pixel coordinates and a second set of center pixel coordinates based on the first and second image sets; performing a discreteness analysis on the first and second set of center pixel coordinates; selectively fusing the first and second set of center pixel coordinates based on axial label information to construct a synthetic coordinate matrix; generating a pixel deviation matrix based on the synthetic coordinate matrix and a reference coordinate matrix; generating a continuous distortion calibration model based on the pixel deviation matrix; and performing a calibration operation on the laser galvanometer. This implementation can utilize a common scanner to calibrate laser galvanometer distortion, thereby significantly reducing equipment investment costs.

The application relates to the technical field of mixed signal circuits, and provides a pipeline successive approximation type analog-to-digital converter and method for inter-stage gain error calibration. A background calibration scheme is designed by introducing a gain error detection circuit and a calibration circuit. For inter-stage gain error calibration of any two adjacent sub-SAR ADCs, the gain error detection circuit is used to judge the range of residual error, the inter-stage gain error is monitored, and finally the closed-loop gain of the residual error amplifier is calibrated according to the deviation result determined by the inter-stage gain error, so that the closed-loop gain gradually converges to the ideal gain. Compared with the prior art, the aforementioned background calibration scheme belongs to analog domain calibration and can track the change of the gain error with PVT. By directly correcting the actual analog gain in the circuit, the background real-time calibration of the inter-stage gain error is efficiently and accurately realized, and the precision and stability of the pipeline successive approximation type analog-to-digital converter are effectively improved.

The invention relates to the technical field of data acquisition and processing, and discloses a multi-level time sequence optimization logic method for FPGA high-frequency data acquisition and processing, which can significantly break through the performance bottleneck of a traditional static hardware architecture in processing non-stationary high-frequency signals, and can improve the performance of the FPGA high-frequency data acquisition and processing by introducing a dynamic value evaluation system based on signal entropy. According to the method, accurate capture and priority scheduling of key mutation data are achieved, occupation of invalid data on computing resources is thoroughly eliminated, and by means of time sequence and resource coupled topology planning and an elastic assembly line reconstruction technology, hardware logic has the self-adaptive capacity of real-time deformation along with data features, and the real-time performance of the hardware logic is improved. Not only are time sequence conflicts and metastable state risks effectively avoided under extreme working conditions, but also self-evolution and calibration of system parameters are realized through a closed-loop feedback mechanism. And the utilization efficiency of logic resources and the robustness of multi-task parallel processing are remarkably improved.

This utility model relates to the field of combustible gas sensor calibration, specifically to a high-efficiency multi-channel combustible gas sensor calibration device. It comprises a cabinet assembly, a calibration assembly, a first gas supply assembly, and a second gas supply assembly; the calibration assembly, the first gas supply assembly, and the second gas supply assembly are respectively connected to the cabinet assembly; the first gas supply assembly and the second gas supply assembly are respectively connected to the calibration assembly; the first gas supply assembly and the second gas supply assembly are in communication. This solves the problem of slow calibration efficiency in existing combustible gas sensor calibration devices.

This invention relates to the fields of computer vision and intelligent detection technology, and particularly to a method and system for rapid recognition of multi-dimensional features of containers. The invention constructs a bidirectional closed-loop dynamic weighted multi-scale feature pyramid that includes top-down propagation and bottom-up calibration. Through the top-down path, high-level features provide semantic priors indicating the high probability of character presence, guiding shallower networks to focus on container number regions rather than background noise. Combined with dynamic weights, the contrast of characters can be adaptively adjusted under different lighting conditions, solving the problem of character breakage or adhesion caused by uneven lighting in existing technologies. Through the bottom-up calibration path, precise edge information contained in the multi-scale features is fed back to the deep aggregated features, enabling the deep aggregated features to achieve feature aggregation and calibration, thereby improving the positioning accuracy of subsequent detection heads.

The present application relates to the technical field of bridge engineering test, in particular to a model test device and test method for force state of a rotating cable at a rotating cable saddle, the model test device comprising a force applying mechanism, a horizontal turning device, a rotating cable saddle device and an anchoring device, the force applying mechanism being used to connect with one end of a main cable test piece and apply tension to the main cable test piece, the anchoring device being used to fix the other end of the main cable test piece, the horizontal turning device and the rotating cable saddle device being arranged between the force applying mechanism and the anchoring device and being used for winding of the main cable test piece, the horizontal turning device being used to turn the main cable test piece from vertical to horizontal and enter the rotating cable saddle device horizontally and tangentially, and the rotating cable saddle device being used to simulate a rotating cable saddle so that the main cable test piece tangentially leaves the rotating cable saddle device. The present application realizes simulation test of different force states of the main cable of a single-tower single-cable suspension bridge at the rotating cable saddle.

This invention belongs to the field of data processing technology, specifically relating to a consumer data report generation system based on machine learning. This system aims to solve technical challenges such as insufficient depth in feature mining of large-scale heterogeneous consumer data and homogenization of report generation. The system includes: a multi-source heterogeneous data adaptive ingestion module, a nonlinear feature automated calculation engine, a heterogeneous behavioral semantic association graph construction unit, an incremental machine learning inference center, and a multi-dimensional logical adaptive report generation platform. Through standardized mapping, nonlinear feature extraction, and semantic graph modeling, combined with incremental model inference, the system can automatically match narrative logic according to needs and generate structured, visual reports. This invention achieves deep perception and dynamic real-time processing of massive amounts of consumer data, improving report production efficiency and business insight, and providing an efficient and adaptive solution for consumer decision-making.

This application provides a method, apparatus, electronic device, storage medium, and program product for calibrating dead reckoning information. The method includes: acquiring first dead reckoning information and pseudo-measurement information of a vehicle, wherein the first dead reckoning information is determined by the vehicle's inertial measurement unit (IMU), and the pseudo-measurement information is represented in the vehicle coordinate system; transforming the first dead reckoning information to the vehicle coordinate system to obtain second dead reckoning information of the vehicle; determining the measurement error of the IMU based on the second dead reckoning information and the pseudo-measurement information; acquiring noise parameters of a data filter, wherein the noise parameters describe the noise of the data filter; and calibrating the first dead reckoning information of the vehicle through the data filter based on the measurement error and the noise parameters to obtain third dead reckoning information of the vehicle. This application can effectively improve the accuracy of calibrated dead reckoning information.

The application relates to a circuit breaker working analysis method and device, computer equipment, a readable storage medium and a program product. The method comprises the following steps: acquiring a plurality of preset reference envelope curves, a circuit breaker working curve of a circuit breaker and circuit breaker configuration information; determining a target reference envelope curve matched with the circuit breaker configuration information from the reference envelope curves; the target reference envelope curve comprises a plurality of reference points; taking the circuit breaker working curve as a reference, performing numerical adjustment on the target reference envelope curve, so that the reference points in the obtained new target reference envelope curve are aligned with the numerical points in the circuit breaker working curve; and determining a working analysis result of the circuit breaker based on the comparison relationship between the numerical points and the reference points. The method can improve the accuracy of the working analysis result of the circuit breaker.

This invention provides a long-range waveform radar polarization calibration method based on a common strong point target, which can be used to calibrate the long-range waveforms of fully polarimetric radars. The invention first designs an experimental scheme considering the characteristics of multi-waveform radars and proposes a passive polarization calibration method based on a common strong point target in a common measurement area for different waveforms. Compared to existing polarization calibration algorithms, this method addresses the difficulty of conducting long-range waveform field experiments by using easily calibrated short-range waveforms to calibrate long-range waveforms.

The application provides a calibration method of a right-angle prism for aircraft assembly, and belongs to the field of aircraft assembly tools. The application is realized based on a calibration adjustment clamp, a laser radiator positioning seat on the clamp clamps the laser radiator, a prism positioning seat clamps the right-angle prism, an incident light calibration front seat and an incident light calibration rear seat are arranged on an incident light path, the coaxiality of incident light is calibrated by the fact that light rays simultaneously meet the requirements of target center on the two calibration seats, a refracted light calibration front seat and a refracted light calibration rear seat are arranged on a refracted light path, the calibration of the right-angle prism is realized in a way of over-constraint by the fact that refracted light simultaneously meets the requirements of target center on the two calibration seats. The application realizes the calibration of the right-angle prism, guarantees that the perpendicularity is controlled within 0.05mm in the range of 10m, the calibrated prism has been applied in the process of aircraft product manufacturing, and good application effect is obtained, and the positioning and detection precision of the product are improved.

This invention provides a low-complexity TIADC time mismatch error calibration method, belonging to the fields of digital signal processing and high-speed, high-precision TIADC technology. It solves the most difficult problem in TIADC systems: estimating and calibrating time mismatch. The technical solution includes the following steps: S1: Converting a continuous external input analog signal into M channels of digital signals; S2: Combining them into a single signal y[n]; S3: Obtaining the calibrated output signals of each ADC channel; S4: Estimating the residual time mismatch error of each ADC channel; S5: Feeding the estimated time mismatch error signal back to the serial improved Taylor compensation calibration module as input. The beneficial effects of this invention are: when the 16-bit TIADC input signal frequency is within the entire Nyquist band, after third-order calibration, the average SFDR of the TIADC system is improved by 56.2 dB, and the average SNR is improved by 55.6 dB.

The utility model relates to the technical field of semiconductor manufacturing equipment, specifically provides a kind of calibration tool for manipulator, manipulator and semiconductor processing equipment, to solve the problems such as low efficiency, poor precision of artificial calibration in prior art.To this end, the utility model provides a kind of calibration tool for manipulator, manipulator includes multi-joint robot arm and the driving device for driving multi-joint robot arm movement, calibration tool includes plate body, plate body is provided with mounting hole, the driving shaft of multi-joint robot arm passes through mounting hole and is connected with driving device;The upper surface of plate body is provided with angle scale, and angle scale is set around mounting hole.Based on the above structural arrangement, the rotation angle of multi-joint robot arm can be calibrated directly according to the angle scale on plate body, so as to reduce the repeated debugging time of artificial calibration, greatly improve calibration efficiency and calibration accuracy.

The application relates to a kind of measurement and calibration method of multi-beam antenna pointing deviation under satellite antenna coordinate system, belong to satellite communication technical field.The application takes the measurement and calibration of mobile communication satellite phased array multi-beam antenna pointing deviation as input, establishes the relationship model of pointing measurement, uses the relationship model between ground calibration station and satellite posture, adjusts the beam pointing of mobile communication satellite phased array multi-beam antenna by adjusting satellite posture or phased array antenna beam forming parameter, realizes the calibration of multi-beam antenna pointing deviation.