14results about How to "Simplify the calibration process" patented technology

The application discloses an R-2R digital-analog converter with an auxiliary calibration structure and relates to the technical field of high-precision digital-analog conversion. The converter comprises a main DAC, a calibration quantity calculation module, a compensation code generation module, an auxiliary DAC and an operational amplifier circuit. The main DAC converts a digital input into an analog current. The calibration quantity calculation module generates a 15-bit compensation code containing a 1-bit sign bit and a 14-bit data bit through a 24-bit ADC, a comparator and successive approximation logic, and only calibrates the high 12 bits of the main DAC bit by bit, and the low 4 bits do not need to be calibrated. The compensation code generation module generates a total compensation code through gating by a multiplexer and superposition by an adder. The auxiliary DAC is a 14-bit binary current type structure, and realizes bidirectional compensation in cooperation with a positive and negative reference voltage source. The application has the advantages of short calibration period, small storage consumption, no need for additional bias calibration, excellent linearity, and suitability for application in the fields of wireless communication, biological medicine and the like, and meets the application requirements of high resolution and high precision.

The present application relates to the technical field of building decoration, and provides a wall leveling system with a bending clamp and a mounting method thereof, the wall leveling system comprising: a bending clamp comprising a bottom plate and bending plates connected to both sides of the bottom plate, the bending plates being plastically bent under external force; a batten plate having opposite first and second sides in the thickness direction, the batten plate being provided with a plug-in hole penetrating the first and second sides, the bending plates penetrating the plug-in hole from the first side of the batten plate and being fixedly connected to the second side of the batten plate through first connecting pieces, and the bottom plate being fixed to a wall body through second connecting pieces. Each position of the bending plate can be bent, and the bending area of the bending plate at different positions can be directly bent by hand to adjust the spacing distance between the bottom plate and the batten plate. Compared with the way of adjusting the height of the wooden cushion block by cutting, the adjustment efficiency is higher, and the three-proofing treatment is not required, the mounting steps are simplified, and the installation efficiency is further improved.

This disclosure describes a sensing capability resistant to crosstalk. A current sensor is provided for a target conductor among a plurality of conductors. The current sensor includes at least one magnetic sensor configured to provide two signals representing two different parameters of a field, the two different parameters being different components or their directional derivatives (e.g., gradients). The current sensor also includes a processor configured to derive a signal indicating a current based on a linear combination of a first signal and at least a second signal. At least one of these signals is weighted by coefficients that are constants selected based on the distance between the sensor and at least one of the plurality of conductors in at least a first or second direction. The coefficients are selected to reduce the contribution of parasitic magnetic fields to the signal indicating a current in the first conductor, wherein the parasitic magnetic field is generated by at least one other conductor.

This utility model provides a level tilt alarm device and a level instrument, including a control module, a gyroscope, an alarm module, and a power module. The control module includes a microcontroller, which receives and analyzes the monitoring data from the gyroscope and controls the alarm module to sound an alarm. The gyroscope is connected to the microcontroller. The alarm module includes a sound alarm module, a light alarm module, and a connector. The sound alarm module and the light alarm module are electrically connected to the microcontroller and the connector, respectively, and the connector is electrically connected to the microcontroller. The level tilt alarm device and level instrument described in this utility model monitor the tilt angle of the level instrument through the gyroscope. The alarm module integrates sound and light alarm modules, with a buzzer built into the eyepiece mount providing auditory cues and an alarm light located inside the eyepiece barrel providing visual warnings, forming a dual alarm mechanism.

The invention provides an aspheric system error calibration method and device, and relates to the technical field of aspheric system error calibration, and the method comprises the steps: obtaining an alignment error; acquiring a rotational symmetry part of the measured aspheric surface at the first wavefront of the original measurement position and a rotational symmetry part of the measured aspheric surface at the second wavefront after the measured aspheric surface is translated by the preset distance along the optical axis; calculating an error surface according to the rotational symmetry part of the first wavefront, the rotational symmetry part of the second wavefront and the alignment error; fitting the error surface with a pre-constructed rotational symmetry error base, and solving a coefficient of each rotational symmetry error term; according to the coefficient and the rotational symmetry error substrate, reconstructing a rotational symmetry surface shape component of the measured aspheric surface; obtaining a rotational symmetry part of a system error according to the difference between the rotational symmetry part of the first wavefront and the reconstructed rotational symmetry surface shape component; according to the invention, the calibration process is obviously simplified, the measurement time is shortened, and the calibration efficiency is improved.

The present application proposes a stress inversion and numerical optimization based intrinsic strain field calibration method and system, belonging to the technical field of metal additive manufacturing numerical simulation. The present application solves the problems in the existing strain field calibration method, such as the lack of feedback calibration mechanism based on measured stress, the focus on residual deformation only, the inability to verify the material constitutive model, the poor generalization of intrinsic strain parameters, and the significant deviation between the prediction results of complex components and the actual measurement. The method comprises the following steps: S1: preparing a calibration sample according to the target material; S2: obtaining the measured value of residual stress at the measurement point of the calibration sample; S3: establishing a finite element model of the calibration sample; S4: establishing a target function and performing automatic iterative solution to obtain the optimal solution of the design variable. The system comprises a calibration sample preparation module, a stress measurement module, a modeling module and a design variable solving module.

The utility model discloses a kind of lithium battery pole piece thickness measuring device, including installation base, adjusting assembly, thickness measuring sensor and calibration module, the adjusting assembly is set on the installation base, the thickness measuring sensor is used to measure the thickness of pole piece, the calibration module is used to calibrate the measurement data of the thickness measuring sensor, the adjusting assembly is used to adjust the position of the thickness measuring sensor;The adjusting assembly includes adjusting plate and fixed plate, the adjusting plate is slidably connected on the installation base, the side of the adjusting plate is connected with the fixed plate, locking structure is provided on the fixed plate, the locking structure is used between the fixed plate and the installation base Fixed / unlocked, support plate is provided on the adjusting plate, the thickness measuring sensor is installed on the support plate.The utility model discloses a kind of lithium battery pole piece thickness measuring device with the advantages of improving measurement accuracy, realizing quick positioning locking, simplifying calibration process, enhancing structural stability.

A dynamic analysis method for the reflectance of vitrinite in continental hydrogen-rich shale based on normally distributed activation energy is proposed for oil and gas exploration and development, solving the problem that the existing Easy%Ro model is not suitable for the evolution analysis of vitrinite in continental hydrogen-rich shale. This invention includes: S1, a calibration method for the dynamic model of reflectance of vitrinite in continental hydrogen-rich shale; including a calibration method for the reaction dynamics model of vitrinite in hydrogen-rich shale based on in-situ thermal evolution simulation experiments or a calibration method for the reflectance dynamics model of vitrinite in hydrogen-rich shale based on paleothermal evolution history; S2, a forward modeling prediction method for geothermal evolution history based on the reflectance dynamics of vitrinite in continental hydrogen-rich shale. This invention establishes the SL_Ro model by obtaining data from in-situ thermal evolution experiments, which is more suitable for describing the reflectance evolution process of vitrinite in continental hydrogen-rich shale compared to the traditional Easy%Ro analysis method based on discrete distributed activation energy chemical kinetic models and exponential conversion relationships.

The application discloses a tower-shaped calibration board, a camera and laser radar combined calibration method and system, wherein the tower-shaped calibration board is in a tower-shaped structure and is composed of N layers of mutually parallel calibration board planes which are spaced and stacked, the size of each layer of calibration board plane is increased step by step from top to bottom; wherein N is greater than or equal to 2; the center of the N layers of calibration board planes is located on the same plumb line; the layer spacing between adjacent two layers of calibration board planes is adjustable; a plurality of two-dimensional code patterns are printed on each layer of calibration board plane; the number of two-dimensional code patterns on each layer of calibration board plane is increased step by step from top to bottom; each two-dimensional code pattern contains coding information and a plurality of predefined feature points, and the world coordinates of each feature point in the world coordinate system have been calibrated. The execution of the camera and laser radar combined calibration method is based on a kind of tower-shaped calibration board, and through the application, one-time high-precision calibration of camera intrinsic parameters and camera and laser radar extrinsic parameters can be realized.

This invention belongs to the field of hydrophone calibration technology, specifically relating to a hydrophone calibration system and method based on acoustic contrast measurement. It includes a sound source, a hydrophone under test, a standard scatterer, a positioning system, and a control and processing unit. A sound field is formed between the sound source and the hydrophone under test. The control and processing unit includes a signal generation module, a signal acquisition module, a data processing module, a memory, and a motion controller. The motion controller controls the displacement of the positioning system, whose bottom is connected to the sound source, the standard scatterer, and the hydrophone under test. This invention effectively eliminates environmental reflection interference, which is a common-mode signal, by performing differential calculations on the complex responses of two measurements, thereby accurately separating the sound field changes caused by the scatterer. By comparing the measured sound field changes with the theoretical scattered sound field calculated based on scattering theory, the absolute sensitivity of the hydrophone under test can be accurately determined.

The application relates to a dialogue text normative analysis method and device and a storage medium, and is applied to the technical field of text analysis, and comprises the following steps: storing dialogue texts in an Elasticsearch cluster according to speaking roles, the Elasticsearch cluster is based on Lunce, supports self-defined word segmentation and query plug-ins, on the basis, the dialogue texts are stored according to the roles, the problem that a word segmentation plug-in cannot distinguish and store role texts based on the full-text retrieval technology Lunce in the prior art is solved, and the application sets self-defined system reserved words, sets a query syntax according to the self-defined system reserved words, generates a syntax tree through Antlr4 technology, obtains a query statement that can be recognized by the Elasticsearch cluster through the syntax tree, compared with the construction of the query syntax in the prior art which adopts a common tree type data structure, the construction of the dialogue text query syntax in the application adopts the Antlr4 technology which is commonly used in the industry, and storage, checking and conversion are relatively simple.

This invention discloses a method and system for calculating spatial interaction efficiency based on a 3D model and voxel partitioning, relating to the field of 3D modeling and data processing technology. The method includes the following steps: voxelizing the 3D model of the target object into a material mesh; adaptively partitioning the source space into non-uniform voxels based on solid angle gradients; obtaining an anisotropic response correction operator through a lookup table; performing path tracing on the emitted rays of each source voxel and calculating the total path transmission weight using the correction operator; finally, numerically integrating based on the solid angle, transmission weight, and volume of each voxel to obtain the total interaction efficiency value, and fitting it into a continuous scale curve. This invention balances computational accuracy and speed through adaptive partitioning, and improves model realism through full path tracing and anisotropic correction, achieving efficient and accurate calculation of spatial interaction efficiency under complex conditions. It is applicable to scenarios such as passive efficiency calibration of radiation detectors.

The application discloses an energy output method and device, a therapeutic instrument and a storage medium, and relates to the technical field of energy control of therapeutic instruments. The method is applied to a therapeutic instrument host, the therapeutic instrument host is electrically connected with a therapeutic handle, and the method comprises the following steps: receiving a target output energy value; acquiring a first input-output relationship of the therapeutic handle; determining host output energy according to the target output energy value and the first input-output relationship; determining a host input parameter based on a second input-output relationship of the therapeutic instrument host and the host output energy, and controlling the therapeutic handle to output the target output energy value based on the host input parameter. Therefore, the application can perform pairing calibration based on the first input-output relationship corresponding to the energy output characteristics of the therapeutic handle and the second input-output relationship corresponding to the energy output characteristics of the host, thereby avoiding energy pairing calibration between the host and the therapeutic handle through complex equipment on site, achieving simple energy output calibration, and simplifying the calibration process of the therapeutic instrument.