126results about How to "Avoid measurement errors" patented technology

The invention discloses a matrix type temperature detection system and method based on temperature-sensitive diodes, the problems of complex wiring and large temperature drift of a traditional multi-node temperature measurement system are solved through M * N matrix layout, row and column time-sharing gating and constant current driving technologies, the system adopts an independent column constant current source to ensure the measurement consistency, and a high-precision ADC and a dynamic calibration algorithm are combined, so that the measurement accuracy is improved. And the precision of + / -0.2 DEG C is realized within the range of 50-150 DEG C. The method is particularly suitable for high-density temperature measurement scenes such as battery thermal management, electronic equipment overheating monitoring and the like.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

This invention discloses a downconversion fluorescence thermometry method based on bilinear mode, implemented using a hardware system. The hardware system includes a 280nm light-emitting diode, two convex lenses, and a Tb... 3+ :Cs2Na 0.9 Ag 0.1 The system comprises InCl6 temperature-sensing material, a grating spectrometer, an oscilloscope, a signal generator, a computer, and a thermostat. The specific implementation steps are: signal excitation and acquisition; temperature calibration; actual temperature measurement; and high measurement accuracy: VPR mode linear correlation coefficient R² ≥ 0.998, FL mode linear correlation coefficient R² ≥ 0.992, avoiding measurement errors introduced by the exponential bias or correction term of traditional FIR technology, thus fundamentally improving temperature measurement accuracy.

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

This invention relates to the field of construction monitoring equipment technology, specifically a settlement observation instrument for roadbed safety construction. The instrument includes a string strain gauge and a differential pressure static level. The differential pressure static level has connecting pipes on both its air and water inlets, which are fixed to a conduit support. The signal line of the string strain gauge is fixed within the conduit support. The two ends of the string strain gauge are fixed to a fixed end and a floating end, respectively. The floating end includes a movable end seat fixedly fitted onto one end of the string strain gauge. This invention allows adjustment of the floating end's height position through a sliding fit between the upper ball joint and the rotating sleeve. The orientation and tilt angle of the floating end can be freely adjusted through the universal joint between the upper ball joint and the upper spherical shell, and between the lower ball joint and the lower spherical shell. During on-site installation, adjusting the floating end position ensures that the string strain gauge's measuring rod remains in a natural, unloaded, and unstressed state, thus avoiding measurement errors introduced by initial stress and effectively improving the accuracy and stability of roadbed settlement and tilt monitoring.

The invention provides a temperature measurement integrated module, which comprises a module seat, a connector and a temperature measurement resistor, the module seat comprises a first seat body and a second seat body, and the first seat body and the second seat body are detachably connected. The connector comprises a male head and a female seat, the male head is arranged in the first seat body, the signal output end of the male head extends to the end, away from the second seat body, of the first seat body and is connected with the signal input end of the monitoring system, the temperature measuring resistor is connected with the end, away from the first seat body, of the second seat body, and the signal output end of the temperature measuring resistor extends into the second seat body. The female seat is arranged in the second seat body, the signal input end of the female seat is connected with the signal output end of the temperature measuring resistor, and the signal output end of the female seat is connected with the signal input end of the male head in an inserted mode. According to the temperature measurement integrated module disclosed by the invention, the measurement precision is effectively improved, the workload is reduced, the verification efficiency is improved, and the operation and maintenance cost is reduced.

The utility model discloses a kind of high-precision weighing evapotranspiration instruments of embedded installation based on lever balance, belong to evapotranspiration instrument technical field. Including fixed support, tray assembly is movably connected on fixed support, and evapotranspiration instrument experimental soil box is set on tray assembly, and weighing assembly is set below tray assembly;Force transmission pull rod is arranged between tray assembly and weighing assembly;Weighing assembly includes force measuring device, and force measuring device side rotatably connects with lever two, and lever two middle part is rotatably installed at the bottom of fixed support by support;Force transmission pull rod upper end is respectively connected with two lever one hinged connection, and force transmission pull rod lower end is movably connected with lever two. The utility model is through the cooperation of lever two and counterweight, substantially offset the initial weight of evapotranspiration instrument experimental soil box, so that force measuring device only needs to monitor the tiny weight change caused by soil evaporation, crop transpiration and rainfall / irrigation, avoid large load to influence sensor sensitivity, realize high-precision data acquisition.

The invention relates to the technical field of workpiece measurement, in particular to a workpiece measurement system and method based on multiple displacement sensors. According to the invention, through cooperation of the displacement sensor and the circular substrate, rapid and automatic measurement of a workpiece can be realized, the production efficiency is improved, manual intervention is reduced, and errors caused by manual operation are reduced; the system is suitable for a conical workpiece with a spherical crown top end, the measurement accuracy can still be kept when the size of the workpiece is large, and the system is suitable for various industrial application scenes.

The application discloses a kind of inclinometer lifting drive mechanism and method, it is related to engineering construction detection technical field, mechanism includes lifting cable, for fixed in the base of bearing cylinder, and drive wheel group and power device installed in base;Drive wheel group includes rotation assembly in the base gear set, upper drive wheel, lower drive wheel and guide wheel group;Power device is driven connection in upper drive wheel and lower drive wheel by gear set, and can make upper drive wheel and lower drive wheel each other reverse rotation;Upper drive wheel is provided with several positive annular upper wheel groove, lower drive sets several positive annular lower wheel groove, the number of lower wheel groove is more than the number of upper wheel groove, the vertical projection of each upper wheel groove in lower drive wheel, all be located between two adjacent lower wheel grooves;Lifting cable is passed through upper wheel groove, lower wheel groove and guide wheel group.The application is applied to inclinometer, in the case where ensuring that it can drive movable probe to realize stable and reliable lifting movement in inclinometer guide pipe, greatly shorten the length of lifting cable.

The invention discloses a laser spot relative position measurement-based CA type five-axis machine tool rotating shaft zero error and axis error measurement compensation method. The method comprises the following steps of S1, detection system preparation: clamping or fixing a laser pen to a main shaft; s2, the A-axis zero error is measured and compensated, wherein the A-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s3, measuring and compensating a C-axis zero error, wherein the C-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s4, performing measurement compensation on the deviation of the A axis-main axis rotation center line in the Y direction; s5, measuring and compensating the deviation of the C-axis-main axis rotation center line in the Y direction; and S6, performing measurement compensation on the deviation of the C-axis-main axis rotation center line in the X direction.

The invention relates to the technical field of measurement, in particular to a wheel type distance measuring device for road and bridge segmented construction and a distance measuring method thereof.The wheel type distance measuring device comprises a wheel, a handle and a counter, the counter is fixed to the handle, and the wheel is connected with the handle through an elastic assembly; the elastic assembly can adaptively adjust the distance between the wheel and the counter under the condition of an uneven road surface, the wheel and the counter are matched through the transmission assembly, and the transmission assembly can drive the counter to operate in the process that the wheel rotates and the elastic assembly stretches out and draws back; the brush is matched with the cleaning assembly, when the wheel rotates, the cleaning assembly drives the brush to brush the outer wall of the wheel in a reciprocating mode, the device is compact in overall structure and convenient and fast to operate, and the elastic buffering function, the stable transmission function and the automatic cleaning function are organically integrated; and the environmental adaptability and the working reliability of the wheel type distance measuring device in a road and bridge segmented construction scene are improved.

The utility model relates to sheet metal bending processing field, specifically speaking, it is angle detection device for sheet metal shell bending processing, including the fixed setting on the sheet metal outer wall fixed part, the fixed part is provided with the movable locating plate, the locating plate is provided with the movable detection board, the detection board can be with the other outer wall of sheet metal spare abuts, the locating plate is provided with the detection unit that detects the board adaptation, the utility model discloses angle detection device for sheet metal shell bending processing, through the detection reference is directly fixed on the workpiece surface, effectively promotes the stability and accuracy of measurement, avoids the shaking and error that handheld measurement brought, can flexible adaptation different size and angle's bending piece simultaneously, and the versatility is strong, can also realize quick alignment and contact, simplifies the operation process, and can directly read the bending angle value, need not additional calculation, significantly improves the detection efficiency, effectively guarantees sheet metal processing precision.

The utility model relates to the technical field of coaxiality detection, in particular to a portable door hinge coaxiality detection device, which comprises a base and adjusting seats symmetrically distributed on two sides of the base, positioning mechanisms are arranged on the base and the two groups of adjusting seats, a laser transmitter is fixedly mounted on the right adjusting seat, and a laser receiver is fixedly mounted on the right adjusting seat. A photosensitive sensor is fixedly installed on the left adjusting seat, and an adjusting mechanism used for adjusting the distance between the two adjusting seats is arranged on the base. The positioning mechanism comprises a mounting seat which is fixedly mounted on the base and the two groups of adjusting seats, a turntable is arranged in the mounting seat, and three groups of annularly distributed clamping rods are arranged in the mounting seat. The three groups of clamping rods which act synchronously in the mounting base are matched with the annular gear transmission system, hinge shaft cores with different diameters can be clamped quickly, it is ensured that the detection reference coincides with the actual axis of a hinge, non-contact high-precision detection is achieved through cooperation of the laser transmitter and the photosensitive sensor, and the detection precision is improved. Measurement errors caused by contact pressure of a traditional mechanical probe are avoided.

The invention provides a stator outer diameter roundness detection mechanism and method based on internal expansion type positioning, and relates to the technical field of precision measurement, the stator outer diameter roundness detection mechanism comprises a base station, a rotation driving module, a product positioning module, a lifting driving module and a detection module, the product positioning module adopts an internal expansion type mechanism composed of a top column, a positioning block and a wedge block group, the wedge block group is driven to radially tighten the inner hole of the stator through the axial movement of the top column, so that different inner diameter tolerances are adapted, high-precision and non-eccentric positioning is realized, during detection, the lifting driving module drives the plurality of contact displacement sensors to move along the axial direction of the stator and scan the outer diameter contour of the stator iron core unit, and meanwhile, the rotating driving module is used for indexing, so that the detection precision is improved. According to the invention, automatic and high-efficiency detection of the outer diameter roundness of all stator core units is realized, the problems of inaccurate positioning and poor universality of a traditional jig are effectively solved, and the detection precision and efficiency are remarkably improved.

The invention discloses a high-precision measuring rod for a semiconductor quartz large square cavity, and relates to the technical field of detection tools, the high-precision measuring rod comprises a measuring rod body, the width of the measuring rod body is gradually reduced from a mounting end to a measuring end, and one side surface of the mounting end is hinged with a joint through a rotating assembly; the connector comprises a mounting groove penetrating through the upper surface, the mounting groove communicates with a mounting cavity, and the outer side end of the mounting cavity communicates with an inclined mounting opening. The problem of large-depth form and position measurement in a narrow space of a quartz large square cavity can be effectively solved, the measurement precision is remarkably improved, and the requirement of semiconductor manufacturing for high-precision measurement is met. The degree of freedom of the measuring rod is greatly improved, so that the measuring rod can be flexibly operated in a complex space environment. The stability of the measuring rod is enhanced, and measuring errors caused by shaking of the measuring rod are effectively avoided.

The invention discloses a three-point method ground resistance intelligent test method and system based on an electrical explosion-proof environment, and relates to the technical field of resistance intelligent test. The method comprises the following steps: acquiring electrical environment characteristic data of an electrical explosion-proof environment, adjusting a resistance intelligent test parameter according to the electrical environment characteristic data to obtain an adjusted resistance intelligent test parameter, and executing a grounding resistance intelligent test according to the adjusted resistance intelligent test parameter. The method comprises the following steps: monitoring measurement characteristic data of a grounding resistance intelligent test in a grounding resistance intelligent test process, analyzing to obtain measurement stability information of the grounding resistance intelligent test according to the measurement characteristic data of the grounding resistance intelligent test, and executing grounding resistance intelligent test condition verification optimization according to the measurement stability information of the grounding resistance intelligent test. Therefore, the accuracy and the reliability of the intelligent test of the grounding resistance are improved.

The invention provides a pollutant spatial distribution and blow-off and tempering limit measurement method based on a flat flame burner, and relates to the technical field of combustion experiment measurement. According to the method, on the basis of a flat-flame burner, a quartz cover is arranged above the flat-flame burner to form a locally-closed space, and a long-strip-shaped measuring window is formed in the side face; an X-Y plane movable precision probe structure is arranged on the outer side of the window, so that the tip of the sampling probe can extend into a region adjacent to the flame at any coordinate point in the window plane; a camera is arranged on the outer side of the quartz cover, and a camera pixel coordinate probe physical coordinate conversion relation is established through calibration; controlling the probe to move point by point according to a preset scanning path, synchronously collecting pollutant concentration and flame images, and obtaining a pollutant two-dimensional or three-dimensional distribution field under a given working condition; parameters such as gas flow and air-fuel ratio are adjusted, the blow-off / tempering limit is approached and crossed, scanning is repeated at key nodes, and pollutant distribution characteristics in different combustion stability states are obtained.

This invention relates to a center detection system and method for defocused lenses. The system comprises an optical system consisting of a light source module, a beam splitter, a lens holder, a first imaging module, and a second imaging module. The light source module, lens holder, beam splitter, and first imaging module are arranged sequentially along the direction of signal beam propagation, while the lens holder, beam splitter, and second imaging module are arranged sequentially along the direction of reflected beam propagation from the lens under test. Therefore, the light emitted by the light source module is transmitted through the lens under test and received by the first imaging module for Hartmann detection imaging of the lens. Simultaneously, the beam reflected by the lens under test is captured by the second imaging module and imaged to obtain a reflection information map. This system not only has the function of real-time identification of the optical center of the main lens and calculation of the lens refractive power parameters, but also imaging of the microstructure of the defocus area and markings printed on the lens surface, thereby realizing the function of identifying and marking the geometric center of the defocused lens microstructure.

The invention discloses a rapid detection device for the straightness of a riser based on a laser measurement technology, and the device comprises a rack, the rack is rotatably provided with a rotating shaft with an annular groove rubber guide wheel, and is provided with a positioning mechanism and a driving mechanism; the middle of the rack is rotatably connected with an annular plate, the inner wall of the rack is provided with a laser measuring instrument, and the annular plate is meshed with a motor-driven gear through a gear ring; the rubber guide wheels are matched with cleaning, airflow assisting and wiping mechanisms. The device drives the rubber guide wheel to synchronously convey the guide pipe through double power sources, and the motor drives the laser measuring instrument to circumferentially rotate, so that continuous automatic measurement is realized, a measured piece does not need to be manually moved, and the efficiency is greatly improved; the positioning mechanism limits offset rotation of the guide pipe, the cleaning, airflow and wiping integrated mechanism removes pollutants of the guide pipe, sliding errors are avoided, and the measurement precision is guaranteed.

The invention belongs to the technical field of sensor correction, and provides an illuminance correction method and an illuminance sensor under the natural light condition of facility horticulture. The method comprises the following steps: respectively determining an initial illuminance compensation coefficient corresponding to each test incident angle of an illuminance sensor under a standard light source; establishing a mapping relation between the test incident angle and the initial illuminance compensation coefficient; determining the illuminance sensor and the current incident angle of light incident to the light sensing surface of the illuminance sensor; acquiring a current measurement value of the illuminance sensor; when the illuminance sensor is placed in the natural light environment and the illumination condition reaches the standard, determining a target illuminance compensation coefficient from the initial illuminance compensation coefficients according to the mapping relation and the current incident angle; and performing compensation processing on the current measurement value based on the target illuminance compensation coefficient to determine a target illuminance value. According to the invention, errors caused by the installation inclination angle or the sun position change of a traditional illuminance sensor can be effectively overcome, and the accuracy of illuminance detection is improved.

The utility model discloses a high-precision stationary pollution source carbon dioxide measuring device, which relates to the technical field of carbon dioxide measuring devices and comprises a carbon dioxide measuring device and a smoke sampler, a case is mounted in the carbon dioxide measuring device, a heat tracing pipe is connected between the carbon dioxide measuring device and the smoke sampler, and the heat tracing pipe is connected with the smoke sampler. The flue gas sampling device further comprises a back flushing device, and an output pipe of the back flushing device extends to the flue gas sampler. A touch screen is arranged on the outer side of the machine box, a flowmeter is fixedly installed outside the machine box, a power switch is fixedly installed on the outer side of the machine box, a network port is formed in the machine box, a plurality of DB serial ports distributed at equal intervals are formed in the machine box, the size of the machine box is designed according to the standard in the industry, and the machine box is installed in a standard 19-inch machine cabinet system in a modularized mode. According to the design, real-time online monitoring of organized emission of carbon dioxide from stationary pollution sources is effectively achieved, and a support is provided for national double-carbon work.

The application provides a concrete shrinkage test device and an experimental method thereof, which comprises an aluminum alloy support and two detection mechanisms, the detection mechanisms are located at the top of the aluminum alloy support, and the detection mechanisms comprise support blocks. In the application, the detection mechanisms automatically detect the concrete test piece to be measured through a transmission mechanism, which can avoid the measurement errors caused by manual multiple adjustments, improve the accuracy of measurement, and the leveling mechanism can directly contact and measure the concrete test piece to be measured through the micrometer measuring rod. Some recessed parts inevitably exist on the concrete test piece to be measured. If the data obtained by the measuring rod contacting the recessed parts during detection is not accurate enough, the final obtained concrete shrinkage data will also be inaccurate. In addition, the dust removal mechanism can blow air to the contact position of the leveling frame and the concrete test piece to be measured, blow off the floating dust on the surface, clean the floating dust, and improve the detection accuracy.

The application discloses a kind of gateway controller's thermal test method, device, system, equipment and medium.The method comprises: obtaining at least one target heat source included in the gateway controller to be carried out thermal test and the heat-sensitive area matched with each target heat source respectively;According to each target heat source, each heat-sensitive area, the location of gateway controller outlet and the preset at least one thermocouple wiring rule, generate thermocouple wiring mode, so that user can configure thermocouple on each target heat source in gateway controller according to thermocouple wiring mode, obtain target gateway controller;After obtaining the real-time position information of the baffle cover of the baffle cover of the oven after placing the target gateway controller in the baffle cover, set the orientation of the high-temperature fan according to the real-time position information of the baffle cover, start the oven to carry out thermal test on the target gateway controller.Using the above technical scheme, the measurement error caused by external factors can be reduced, and the thermal test precision can be effectively improved.

The utility model discloses a universal meter line patrol instrument circuit, which comprises a universal meter circuit and a line patrol instrument circuit, and the universal meter circuit and the line patrol instrument circuit are integrated in the same physical measurement device. The universal meter circuit and the line patrol instrument circuit are integrated on the same physical hardware, but are completely independent, an independent power supply and an independent power switch are adopted, the requirement that a user has multiple testing functions by adopting one physical device is met, and carrying is convenient. Meanwhile, power supplies and power switches of the universal meter circuit and the line patrol instrument circuit are independent, so that measurement errors caused by electromagnetic interference are thoroughly avoided, and the requirements of creepage distance and safety regulation are met.

This application discloses a method for detecting trace oxygen elements based on an electron probe microanalyzer, relating to the field of analytical detection technology. The method includes: placing the sample to be tested in the electron probe microanalyzer to obtain the signal intensity of oxygen and the signal intensity of major elements in the sample; obtaining the theoretical standard content of oxygen in a standard sample calculated by the built-in calculator of the electron probe microanalyzer; determining a total correction factor based on the signal intensity of oxygen and the signal intensity of major elements; and determining the oxygen content in the sample based on the total correction factor, the theoretical standard content of oxygen in the standard sample calculated by the built-in calculator, and the signal intensity of oxygen. This application solves the technical problem of insufficient accuracy in detecting trace oxygen content in samples using electron probe microanalyzers.

This utility model relates to the field of electrode paste column technology, specifically to a device for measuring the height of electrode paste columns in a calcium carbide plant. It includes a mounting plate, with three connecting plates arranged in a circular array fixedly connected to the bottom end of the mounting plate. Each connecting plate has a laser level gauge slidably contacted at its bottom end. A first rotating ring is rotatably connected to the bottom end of the mounting plate, and a bearing is fixedly connected to the bottom end of the first rotating ring. Compared with existing technologies, this utility model achieves automated, multi-point random sampling through a friction-driven random positioning system. This significantly improves the safety and efficiency of measurement and effectively avoids measurement errors caused by irregularities on the electrode paste column surface (such as gaps or inclination). Its core lies in using friction blocks with varying roughness to cause the rotating ring to rotate asynchronously and randomly, thereby controlling the final measurement position of the laser level gauge through a sliding rheostat, ensuring the objectivity and unbiasedness of the sampling.

This invention discloses an in-situ mixed-flow sampling device and an electrolytic water system. The in-situ mixed-flow sampling device includes a mixed-flow sampling mechanism and an analysis mechanism. The mixed-flow sampling mechanism includes at least one inlet, at least one outlet, and at least one sampling port. A turbulence structure is formed inside the mixed-flow sampling mechanism to drive fluid turbulence. A gas chamber for gas phase enrichment is formed at the top of the turbulence structure. A gas guide tube is provided inside the mixed-flow sampling mechanism, with one end extending into the gas chamber and the other end connected to the sampling port. The gas chamber and the inner cavity of the gas guide tube together form a micro-cavity with a volume ≤20mL. An analysis mechanism is provided at the sampling port and is configured for selective permeation. The beneficial effects of this invention are: while ensuring good sampling accuracy, it can also drastically reduce the overall device size, making it suitable for oxygen-hydrogen sampling scenarios in low-power electrolytic water systems with a hydrogen production rate ≤5Nm³ / h.

The utility model relates to the field of automobile part processing, in particular to an aperture detection mechanism for automobile part processing, which comprises a workbench, a transmission belt unit arranged at the top end of the workbench, and an aperture detection unit arranged at the top end of the workbench and positioned in the middle of one side of the transmission belt unit. First fixing frames are symmetrically arranged at the positions, located outside the conveying belt unit and located on the two sides of the aperture detection unit, of the top end of the workbench, two-way lead screw driving units are arranged in the first fixing frames, and limiting assemblies are symmetrically arranged below the first fixing frames and located above the conveying belt unit through driving of the two-way lead screw driving units; according to the utility model, through the arrangement of the auxiliary assembly, the automobile parts conveyed at the top of the conveying belt unit are limited, the automobile parts are ensured to be located in the middle of the conveying belt unit, the automobile parts are ensured to be always located right below a detection head in the detection process, and measurement errors caused by position offset are avoided.