32results about How to "Quick calibration" patented technology

The invention discloses a hot water circulating pump with couplings, and relates to the field of centrifugal pumps, the hot water circulating pump comprises a base, the top surface of the base is fixedly connected with a base plate, a protective cover, a first support and a pump body, and the end face of the pump body is provided with a machine seal gland. Therefore, maintenance cost is reduced, potential safety hazards are reduced, the coaxiality calibration process is simplified, repeated measurement and adjustment of the position of the motor are not needed, time and labor are saved, coaxiality can be guaranteed, overload protection can be achieved, overload burning of the motor can be avoided, safety accidents are reduced, the operation safety of the whole hot water circulation system is improved, and the service life of the hot water circulation system is prolonged. And overload protection can be adaptively changed according to the size of the motor, so that coaxiality calibration and overload protection adjustment are synchronously carried out, secondary measurement and adjustment are not needed, and the automation degree of the device is improved while time and labor are saved.

The invention belongs to the technical field of electromechanical installation equipment, and particularly relates to a rapid calibration tool for pre-installation of electromechanical equipment, the rapid calibration tool comprises a bottom plate, a top plate and a lifting plate, universal wheels are installed on the bottom plate, and a screw driven by a lifting motor is installed on the lifting plate; a fixed block is installed on the lifting plate, a plurality of sets of rotating rollers are installed on the fixed block, sliding barrels are installed on the rotating rollers, and a hydraulic cylinder is installed between the fixed block and the lifting plate; a mounting frame is mounted on the polished rod, a first electric push rod is mounted on the mounting frame, and a contact block is mounted on the first electric push rod; a second electric push rod is mounted on the contact block and pushes the electromechanical equipment in the x-axis direction; the device is simple in structure, the position of the electromechanical equipment can be conveniently adjusted in multiple directions, the mounting hole position of the electromechanical equipment is rapidly calibrated, and the mounting efficiency of the electromechanical equipment is improved.

The application provides a kind of curved surface plating thickness measurement calibration method.The curved surface plating thickness measurement calibration method includes processing calibration device and calibration sheet, the calibration device has circular arc segment;At least one application package is created on thickness gauge;The probe of thickness gauge is measured at multiple points on a circular arc segment of a certain diameter, and the measurement value of each point is zeroed, and the establishment of the application is completed;Open the established application, place the calibration sheet at a certain position on the surface of the circular arc segment, then contact the probe with the calibration sheet to obtain a reading, if the reading is not within the set measurement thickness range, adjust the application;Place the calibration sheet at the next position on the surface of the circular arc segment, repeat the above steps to obtain a second reading;Repeat the above steps to obtain multiple point readings;Complete the calibration of the application;Call the calibrated application to measure the curved surface on the part.The application can improve the accuracy of curved surface plating thickness measurement.

The utility model belongs to the technical field of automobile parts processing discloses a kind of type checking device suitable for opening piece door sill beam, including punch press, datum seat, upper fixed seat, lower fixed mechanism and type checking head, the type checking head is installed in the action end of the punch press by upper fixed seat, the datum seat is installed on the workbench of punch press, the lower fixed mechanism is installed on the datum seat, the lower fixed mechanism includes clamping block, two fixed blocks and adjusting mechanism, the fixed block is set in the left and right sides of the top of the datum seat and is fixedly connected, the clamping block is equipped with two, the clamping block is connected with the fixed block respectively, the clamping block is connected with the fixed block by adjusting mechanism. It can realize to cut off department type checking, avoid the disadvantages of artificial type checking.

The utility model discloses an automatic woven cloth feeding and conveying device which comprises a bottom plate, a supporting rod, a second support, a fixing frame, a first driving motor, a gear transmission mechanism and a guiding mechanism, the guiding mechanism is composed of a second driving motor, a positive and negative tooth lead screw, a guiding roller and an airflow auxiliary assembly, and the first driving motor drives a gear to transmit. In the guiding mechanism, a second driving motor drives a positive and negative tooth lead screw to adjust the distance between guiding rollers, the transverse position of the cloth can be manually calibrated conveniently, deviation is prevented, compressed air generated by an air pump is sprayed out of a flat nozzle at a high speed through a pipeline, friction force between layers of the cloth is reduced, and the cloth conveying efficiency is improved. According to the device, through cooperative work of mechanical transmission and an airflow auxiliary system, the feeding efficiency and quality of the woven cloth are remarkably improved, the labor cost is reduced, and the stability and reliability of the conveying process are guaranteed.

The utility model relates to an auxiliary calibration bracket for a laser positioner, which comprises a fixed base, a sliding rail connected to one side of the fixed base, a sliding block connected to the sliding rail, a fixed sliding plate connected to the sliding block, mounted bearings connected to the fixed base, a transmission screw rod connected between the mounted bearings, and a sliding block sleeved on the transmission screw rod, a connecting block is connected between the sliding block and the fixed sliding plate, a driving device connected with the transmission lead screw is connected to the fixed base, a first supporting column is connected to the fixed sliding plate, a second supporting column is connected to the first supporting column and is of an arc-shaped structure, and the first supporting column is connected with a third supporting column through the second supporting column. The third supporting column extends to the other side of the fixed base, a sliding rail groove is formed in the side edge of the third supporting column, the laser positioner is connected into the sliding rail groove in a sliding mode, and the other side of the fixed base is connected with a calibration graph. According to the utility model, rapid and accurate calibration can be realized, and the efficiency is effectively improved.

The invention discloses a reference current calibration method for a nerve stimulation device. The reference current calibration method comprises the following steps: step 1, assuming a reference current value constant; 2, setting an output current, and generating voltage amplification through a 10-ohm load; step 3, calculating an actual reference current value by using an ADC function of the ENS001 chip; 4, changing the assumed reference current value constant into the actual reference current value calculated in the step 3; 5, repeating the steps 2-3, and calculating the actual reference current value obtained for the second time; 6, judging whether the difference between the actual reference current value obtained in the step 3 and the actual reference current value obtained for the second time in the step 5 is greater than 5%, and if the difference is greater than 5%, repeating the step 4 and the step 5; obtaining a first final reference current value until the difference is less than or equal to 5%; and step 7, the final reference current value is stored in the flash of the ENS001 chip. The reference current of the nerve stimulation device can be quickly and accurately determined, and the reference current is stored in a flash of a chip, so that the calibration precision and consistency of products are improved.

The utility model provides a test circuit board, which comprises a bus circuit and four test circuits communicated with the bus circuit respectively, the four test circuits are connected with four single-pole four-throw radio frequency tuning switches respectively, and the four single-pole four-throw radio frequency tuning switches are connected with the bus circuit. The four single-pole four-throw radio frequency tuning switches can conduct a first output path, a second output path, a third output path and a fourth output path respectively, and are connected to a radio frequency antenna through the conducted output paths respectively; the bus circuit is used for supplying power to the test circuits and providing a control signal, and the four test circuits are respectively used for testing off-state capacitance of an output path correspondingly conducted by the single-pole four-throw radio frequency tuning switch connected with the test circuits according to the control signal. The test circuit board provided by the utility model can quickly calibrate the single-pole four-throw radio frequency tuning switch, is small in test influence, and is beneficial to improving the accuracy of a radio frequency antenna performance test process.

This application discloses a digital-to-analog converter (DAC), an offset calibration method, and an electronic device. The DAC includes an operational amplifier, a control unit, an offset calibration unit, and a resistor network. The operational amplifier includes a non-inverting input terminal, an inverting input terminal, a control terminal, and an output terminal. The control unit outputs a first control signal to control the operational amplifier to enter comparator mode and performs offset calibration on the operational amplifier based on the signal output from the output terminal. The offset calibration unit generates a reference voltage when the operational amplifier is in comparator mode. The resistor network outputs an inverting input voltage when the operational amplifier is in comparator mode. The technical solution of this application generates a reference voltage by adding an offset calibration unit and processes the offset voltage of the operational amplifier based on the reference voltage, thereby achieving rapid calibration of the circuit in a specific operating mode.

The invention discloses a fish body length measuring method and system. The method is realized based on geometric measurement and statistical model fusion. According to the method, stable and reliable fish body length measurement under the conditions of complex fish body postures and segmentation errors is realized by constructing a two-channel length estimation method of a geometric measurement and area statistics model and combining a shape quality index-based adaptive fusion mechanism. Specifically, geometric measurement length is obtained through fish body contour extraction and skeleton analysis, a statistical length estimation model is constructed based on fish body area and shape features, and area estimation length is obtained. In order to improve the stability of the system in a complex scene, a self-adaptive fusion mechanism based on a shape quality index is further constructed, indexes such as fish body contour integrity, contour smoothness and a region filling rate are evaluated, and a measurement credibility weight is calculated; and carrying out adaptive fusion on the geometric measurement result and the area estimation result according to the weight to obtain a final fish body length estimation value.

The application discloses a marine low-speed diesel engine propulsion system safety monitoring instrument, and relates to the technical field of ship safety monitoring. The lower side of the outer wall of the base is provided with a positioning block one, the side of the diesel engine body close to the base is provided with a groove one, the groove one is matched with the positioning block one, the lower side of the outer wall of the positioning block one is provided with a mounting groove, the inside of the mounting groove is provided with a pressure sensor, the middle part of the outer wall of the base is provided with a mounting hole, the inside of the mounting hole is provided with a pre-tightening bolt, the inner wall of the base is provided with a shearing groove in the radial direction, and the inside of the shearing groove is provided with a buffer block in interference. The positioning block one, the groove one, the pre-tightening bolt, the pressure sensor, the acceleration sensor and the temperature sensor are installed, the function of stable information collection is realized, the base installation pre-tightening force can be maintained in the vibration working condition through the self-locking of the positioning block one and the groove one, and the equipment information collection accuracy and stability are improved.

This invention relates to the field of welding technology and discloses a large-size marine suction sail segment assembly and welding equipment and method. The welding equipment includes two sets of corresponding workbenches, each equipped with a clamping mechanism and a first driving mechanism. The first driving mechanism is connected to the clamping mechanism and is used to drive the two clamping mechanisms closer together or further apart. The welding method includes the following steps: Step 1: The sail sleeve is fitted onto the outside of the straightening rod, and then the straightening rod is moved to the middle of the clamping mechanism by the second driving mechanism; Step 2: The clamping mechanism is then moved closer to the sail sleeve by the first driving mechanism. This invention, through the setting of the straightening rod, utilizes the symmetrical structure of the egg-shaped sail sleeve and the characteristic that the center of gravity is located on the vertical line, combined with the point contact design of the arc-shaped top of the straightening rod, to achieve automatic centering and straightening of the sleeve, avoiding positioning deviations caused by human operation errors and providing a stable reference for subsequent welding processes.

The application discloses a deviation calibration method, device, equipment, medium and computer program product, comprising: controlling a mechanical hand to suck a target plug from an assembly position and move to a first shooting position along a calibration track to obtain first plug positioning information transmitted by a first camera arranged at the first shooting position, wherein the assembly position is provided with a check block, and a pin groove for fixing the target plug is arranged in the check block; controlling the mechanical hand to return, releasing the target plug and then sucking the target plug again, moving to the first shooting position along the calibration track again, and obtaining second plug positioning information transmitted by the first camera; and compensating the mechanical hand assembly position based on the difference between the first plug positioning information and the second plug positioning information, so as to realize deviation calibration of product visual assembly. The deviation problem of the combination of the mechanical hand equipment mechanism in the product assembly equipment and the visual system is quickly solved, and the rapid calibration of the product assembly equipment is realized.

This invention relates to the field of concrete construction technology and discloses a formwork support device for concrete pouring construction. It includes two mutually rotatably connected support rods and corner pieces rotatably installed at the ends of the support rods. Both ends of the two support rods are telescopically adjustable. The corner pieces have two rotatably adjustable corner plates that abut against the two sides of the corner of the formwork. A stepped surface is formed on the outer wall of the corner plate, and a support plate abuts between the two opposite stepped surfaces of adjacent corner pieces, with the support plate in close contact with the formwork. This invention can flexibly adapt to various angles of window corners, including acute, right, and obtuse angles. Simultaneously, by utilizing diagonal support to form a closed force transmission path from the center to the four corners, it can further improve the versatility and overall rigidity of the support device, thereby preventing deformation of the window corners.

The invention discloses a decorative paper color difference detection method and device based on spectral analysis, and belongs to the technical field of decorative paper detection. The invention discloses a spectral analysis-based decorative paper color difference detection method and device, and the device comprises an installation housing which is provided with through grooves at two ends; at least one colorimeter, wherein the number of the colorimeters is at least one; and the reciprocating driving assembly is mounted in the inner cavity of the mounting shell. According to the technical scheme, by arranging the reciprocating driving assembly, the colorimeter can keep dynamic synchronization with the moving decorative paper, so that the colorimeter and the measured area keep static relatively, the problems of measurement point offset and continuous incident light angle change caused by relative movement can be solved, chromatic aberration comparison has high consistency and reliability, and the measurement accuracy is improved. Therefore, a reliable basis can be provided for real-time quality monitoring and process adjustment in the production process.

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.

This invention relates to the field of permanent magnet synchronous motor vector control technology, specifically to a rapid calibration method for permanent magnet synchronous motors in new energy vehicles. It includes a calibration table for the maximum torque-to-current ratio; a calibration table for the motor flux linkage; a calibration table for the motor inductance; and obtaining the target torque T. req And by consulting the calibrated lookup tables, the required d-axis current i to be output is obtained. dref and q-axis requested current i qref This method does not require the motor to operate at high speeds, reducing risks and minimizing the need for high-speed testing benches. It also offers high calibration efficiency and high control precision.

The invention relates to a dynamic calibration system and method for a flexible pressure sensor. The system comprises a signal generation device, a fixing device, a standard accelerometer, a standard vibrator and a data acquisition and judgment device, the fixing device comprises a first fixing device and a second fixing device; the bottom of the first fixing device is contacted and fixedly connected with the upper surface of the standard vibrator, one surface of the calibrated flexible pressure sensor is contacted with the top of the first fixing device, and the other surface of the calibrated flexible pressure sensor is contacted with the second fixing device and is fixed through the second fixing device; the standard accelerometer is installed in the first fixing device. The method comprises the following steps: adjusting the second fixing device based on the system, so that the pre-tightening force between the calibrated flexible pressure sensor and the standard vibrator reaches a set value; and performing frequency calibration and acceleration calibration on the calibrated flexible pressure sensor based on the dynamic calibration system. The dynamic calibration system and method for the flexible pressure sensor are realized.

The present application belongs to the technical field of robot control, and discloses a humanoid robot zero position automatic calibration method and system based on current characteristic analysis, which comprises determining the zero position calibration sequence and the zero return direction of each joint; the offset of each joint from the mechanical limiting position to the zero position in the zero return direction is the initial zero return offset; the joints are controlled to move to the mechanical limiting position, and the active current signals of the joint motors are collected in real time in each sampling period; if the active current signals collected in real time for a plurality of times exceed the current threshold value of this time, it is judged that the joint reaches the mechanical limiting position; the joints are controlled to move in the zero return direction until the initial zero return offset is reached; and the initial zero return offset is used to control the zero return of the joints after correction. The present application can realize efficient, safe, automatic and rapid calibration of the zero positions of multiple joints without external sensors, through adaptive analysis and zero return control of the current characteristics of the robot body driving motor.

The utility model discloses an agricultural threshing device for plant shells, which belongs to the field of agriculture and comprises a huller composed of an extrusion component and a screening component, and the extrusion component comprises an upper shell cover, a lower shell, an extrusion roller connected with the lower shell through a bearing and a hulling blocking net located below the extrusion roller, and the upper shell cover and the lower shell are detachable. Compared with the prior art, the extrusion roller has the advantages that the shaft rods on the two sides of the extrusion roller are designed to be the detachable pin rods, when the extrusion roller needs to be detached, the extrusion roller body can be taken and placed only by pulling out the detachable pin rods, and due to the fact that the detachable pin rods are fixed between the upper shell cover 111 and the lower shell body, the extrusion roller body can be detached conveniently. Therefore, after the extrusion roller is installed, the position of the extrusion roller can be conveniently fixed.

This application discloses a calibration method, a calibration light source, an electronic device, and a storage medium. The method includes: acquiring first calibration data of a standard multispectral sensor under a broadband light source and second calibration data under a ramp light source; acquiring third calibration data of a multispectral sensor to be calibrated under a broadband light source and fourth calibration data under a ramp light source; calibrating the multispectral sensor to be calibrated based on the first, second, third, and fourth calibration data to obtain the calibration result of the multispectral sensor. Using a ramp light source for calibration not only allows for rapid calibration of the multispectral sensor but also ensures the accuracy of the multispectral sensor calibration.

The invention discloses a soil erosion thickness measuring instrument, and relates to the field of soil thickness monitoring, the soil erosion thickness measuring instrument comprises a marking rod and a splicing rod, the bottom end of the marking rod is provided with a splicing groove, the top end of the splicing rod is fixedly connected with the bottom end of the marking rod through a splicing assembly, the bottom end of the splicing rod is fixedly provided with a fixed rod, and the lower side of the splicing rod is provided with a plurality of telescopic ports. According to the marking device, the fixing rotary knob is rotated, the fixing rotary knob drives the driving rod to rotate, the driving rod drives the first-stage bevel gear to rotate, the first-stage bevel gear drives the second-stage bevel gear to rotate, the second-stage bevel gear drives the transmission rod to rotate, and the transmission rod drives the fixing threaded rod to rotate; the rotating block drives the reinforcing feet to diffuse outwards with the fixing rod as the center, so that the reinforcing feet are obliquely inserted into the soil, the device is reinforced, and the problem that the device is inclined due to external conditions such as soil erosion during measurement, and the measurement result is affected is solved.

This invention discloses a device and method for simultaneously detecting the straightness and contour of an arc panel on an automotive brake shoe. The device includes a support platform, a first positioning component and a second positioning component mounted on the support platform, and a rotating detection mechanism mounted on the support platform. The connecting grooves at both ends of the brake shoe to be tested are positioned by the first and second positioning components, respectively. After positioning, the theoretical arc center axis of the brake shoe to be tested coincides with the rotation axis of the rotating detection mechanism. The axial straightness and surface curvature of the outer surface of the positioned brake shoe arc panel are simultaneously detected by rotating the rotating detection mechanism. This invention solves the problem in the prior art of being unable to quickly and accurately detect the straightness and contour of the brake shoe after welding deformation, enabling rapid acquisition of error values, ensuring subsequent riveting quality, and improving the performance and safety of brake pads.

This invention relates to a calibration device, specifically a calibration device suitable for a level wheel alignment measuring instrument and a portable brake performance tester. The calibration device for level wheel alignment measuring instruments and portable brake performance testers includes a base, a frame erected on the base, a rotating shaft mounted on the frame, a detection turntable connected to the rotating shaft, a drive device for driving the rotating shaft to rotate, an angle encoder mounted on the rotating shaft, and a detection display system electrically connected to the angle encoder. This invention uses a bidirectional (lateral and longitudinal) fixed detection table as the support mechanism for the measuring and testing instruments. An angle is rotated via a rotating mechanism and detected by the angle encoder and detection display system, thereby quickly and accurately calibrating the level wheel alignment measuring instrument and the portable brake performance tester.

This invention belongs to the field of autonomous driving positioning and navigation technology, specifically a method for autonomous vehicle trajectory and navigation image projection calibration. The main steps include: acquiring map data of the actual scene via satellite to establish a high-precision navigation map and image; controlling the vehicle to drive on the road and obtaining the vehicle's driving trajectory via GPS; extracting the pixel corner trajectory shape of the actual road in the navigation image, calculating the GPS corner trajectory shape based on the trajectory recorded in GPS, and generating point-pair data by connecting the discrete points of the GPS trajectory with the image pixels; performing coordinate system transformation on the point-pair data through similarity transformation, and projecting the discrete points of the GPS trajectory onto the high-precision navigation image through calibration transformation to complete the projection calibration. This method solves the problems of geometric distortion and computational efficiency in existing affine transformation models, reduces the dependence on high-precision sensors, and adapts to the navigation needs of autonomous vehicles in road scenarios.

The invention is suitable for the technical field of road base paving, and provides a road base paving thickness regulating and controlling device and a regulating and controlling method, and the device comprises a paver, a thickness self-adaptive compensation mechanism, a thickness regulating and controlling mechanism and an ironing plate. According to the device, through deep fusion of a thickness self-adaptive compensation mechanism and a laser detection technology, the control precision of the paving thickness is remarkably improved, a laser generator integrated in a protection box and a detection plate form a high-precision detection path, and a reference position can be quickly calibrated by matching with an elastic buffer design of a screw rod driven by a handle and a spring rod; initial installation errors are effectively eliminated, the detection plate can adapt to pavement microcosmic fluctuation through an adjustable supporting structure of the balls and the connecting plate, the stability of laser reflection signals is ensured, and the controller is based on the thickness deviation value fed back in real time.

The application discloses a magnetic field sensing device, comprising: a first magnetic field generating unit for applying a preset first excitation magnetic field to a first sensing unit; the first sensing unit is arranged in a first region and is used for sensing an ambient magnetic field to generate a first sensing signal; a second sensing unit is arranged in the first region and is used for sensing an ambient magnetic field to generate a second sensing signal; and an operation unit is used for generating a calibration signal according to the first sensing signal and the second sensing signal, wherein the calibration signal contains information corresponding to the first excitation magnetic field, and the calibration signal is used for calibrating the first sensing signal and / or the second sensing signal. The magnetic field sensing device provided by the application has higher sensitivity and can realize linear error calibration in a targeted manner.

This utility model provides a high-precision positioning module conveyor belt, relating to the field of conveyor belt technology. It includes a support frame with a horizontal plate in the middle. A support column and reinforcing rod are fixedly installed at the bottom of the horizontal plate. A rotating rod, a rotating roller, and a rotating shaft are installed at the top of the support frame. A pressure block and a protrusion are also fixedly installed at the top of the support frame, improving operational stability and positioning accuracy. Multiple sliding connection structures, such as the rotating rod, pressure block, and mounting groove, combined with limiting elements like clamping plates and limiting grooves, ensure precise and controllable trajectory of moving parts. The built-in sliding plate-sliding block-push plate linkage mechanism of the protrusion enables dynamic fine-tuning. The tight fit design of the pressure block to the rotating shaft eliminates gap errors. A motor-driven gear-chain transmission system replaces traditional friction transmission, offering higher transmission efficiency and durability. An adjustment device consisting of a threaded rod and a throttle handle facilitates rapid parameter calibration.

This utility model provides a simple flight control leveling device, including a support base, a fine-tuning slide, and a test box. The support base is used to fix the device on the ground or platform. The fine-tuning slide is disposed on the support base and includes several sets of adjustment mechanisms and a slide top plate. The adjustment mechanisms are used to adjust the slide top plate to a horizontal position. The test box is placed on the slide top plate and has a receiving cavity for holding the UAV flight controller. A notch is provided on one side of the test box for the UAV flight controller cable to pass through. Compared with the prior art, this device is simple and low-cost for leveling UAV flight controllers and can quickly calibrate UAV sub-controllers, thereby improving the production efficiency of UAV flight controllers.

The application discloses a kind of high stability HPM power measuring device with online self-calibration function, belong to HPM measurement technical field.It includes: signal monitoring and interlocking unit, for real-time monitoring HPM input port signal has no;Intelligent timing and control unit, for when no pulse state continues to exceed dead time threshold value Judgment enters calibration window and triggers calibration sequence;Main radio frequency switch, for switching measurement main passage to built-in reference source in calibration window;Dual-mode built-in reference source, for output known power calibration signal;High-speed signal acquisition chain, for collecting calibration signal response;Environment adaptive processing unit, integrated temperature and vibration sensor, for compensating environmental drift.The application avoids calibration process and high-power emission period conflict through pulse detection and dead zone determination mechanism, realizes safe, reliable online self-calibration, significantly improves the measurement accuracy and stability of device in harsh environment.