33results about How to "Realize measurement" patented technology

The utility model relates to the technical field of unmanned plane flight state switching, especially to a state switching structure of amphibious unmanned plane, including land walking mechanism for land walking and aerial flight mechanism for aerial flight, and the aerial flight mechanism includes state turnover assembly and drive assembly, the utility model combines two application fields of land tunnel survey and aerial survey, land free steering, fuselage structure change, land-air flight state free switching control, through changing the body structure, reducing the volume, possessing the ability of crossing limited space, can realize the monitoring and measurement to the underground and aboveground environment, the fuselage structure and the flight state change make that the unmanned plane can obtain the lift of multiple angles, when unmanned plane and bottom level, can provide the lift upwards / downwards, and the unmanned plane can execute aerial survey task, when unmanned plane and bottom vertical, can provide the thrust forwards / backwards, and the unmanned plane can execute tunnel survey task.

The application discloses a kiwi storage day prediction system based on a sensing glove, which comprises a portable sensing glove, realizes measurement of kiwi volume, weight, hardness and environmental temperature and humidity information, and further trains a data set collected by the sensing glove through a CNN network, constructs a kiwi storage day prediction model, and realizes prediction of the kiwi storage day. The application combines the portable sensing glove and the kiwi storage day prediction model to form the kiwi storage day prediction system, designs a man-machine interaction interface and an operating system, realizes visualization of system information through the man-machine interaction interface, guarantees more convenient man-machine interaction, realizes the kiwi storage day prediction process based on the kiwi storage day prediction model, realizes prediction of the kiwi storage day, guarantees customer satisfaction and reduces kiwi waste of a merchant.

The application relates to the field of metal part processing devices, in particular to an ultrasonic rolling device for metal parts. The device comprises a connecting plate, a rotating seat is arranged at the upper end of the connecting plate, an electric telescopic rod is fixed at one side of the lower end of the connecting plate, an ultrasonic roller is fixed at the other side of the lower end of the connecting plate, a fixed plate is fixed on the telescopic rod of the electric telescopic rod, a plurality of inclined movable rods are hingedly connected to the lower end of the fixed plate, the plurality of inclined movable rods are arranged according to the circumferential distribution of the axis of the fixed plate, and two adjacent movable rods are connected through a distance measuring assembly. The distance measuring assembly is used for measuring the distance between the two movable rods connected thereto. When the levelness of the workpiece is measured, the plurality of movable rods are controlled to descend simultaneously through the electric telescopic rod, the lower ends of the plurality of movable rods are in contact with the upper end of the workpiece, the distance between the movable rods is measured through the distance measuring assembly, whether the workpiece is vertical is determined according to the measured data, and therefore the efficiency of measuring the levelness of the workpiece is high.

The application discloses a non-orthogonal transducer array three-dimensional ultrasonic wind speed and direction instrument which can be carried on a unmanned aerial vehicle and applied to the field of wind speed and direction instruments, and the non-orthogonal transducer array is adopted to reduce the influence of turbulence on wind measurement accuracy; when the turbulence degree generated by one group of transducers is relatively large, the other two groups of transducers can compensate the data, so that high-precision wind speed and direction measurement is realized; meanwhile, when the unmanned aerial vehicle encounters strong wind, the probe fixing rod will be broken, so that the unmanned aerial vehicle is prevented from losing control due to the large wind area of the orthogonal annular support, and the fixed base plate and the elastic thin rod are arranged to recycle the broken and fallen orthogonal annular support and ultrasonic probe, so that the high-altitude falling object is not easy to form, and the orthogonal annular support and the ultrasonic probe are effectively protected, the subsequent recycling and reuse of the orthogonal annular support and the ultrasonic probe are facilitated, and the wind direction and speed detection in strong convection weather such as strong wind is applicable.

The application provides a static pressure balance type underwater self-driven flexible touch pressure sensing finger, which comprises a touch pressure sensing unit, a hydraulic cylinder, a pressure transmission unit, a piezoelectric transducing unit, a transducing unit support, a platinum electrode and a base, the touch pressure sensing unit and the pressure transmission unit are connected with the hydraulic cylinder through bolts, and the oil cavity between the piston end faces is filled with hydraulic oil; the piezoelectric transducing unit is inserted into the stepped through hole in the cylinder wall of the transducing unit support; the pressure transmission unit and the base are connected with the transducing unit support through a flange and a threaded pair; the platinum electrode is fixed in the lead hole of the piezoelectric transducing unit, and the lead of the platinum electrode is led out from the lead hole of the base and connected to a pressure detection circuit. Based on the area effect of Pascal's principle and the solid-liquid interface double electric layer principle, the application can convert the tiny pressure detected by the finger tip into a larger elastic deformation of the flexible hose, so as to generate a high-amplitude ionic current signal and transmit it to the pressure detection circuit, and realize the sensing, amplification and measurement of the pressure signal.

The utility model provides a kind of circuit board fault rapid detection system, including monitoring and data acquisition comparison system, detection module, XYZ three-axis displacement system, pose adjustment system and motion control system, pose adjustment system is fixed on the X motion component of XYZ three-axis displacement system, to be measured circuit board is fixed in pose adjustment system top, detection module is fixed in the Z axis motion component bottom of XYZ three-axis displacement system.Detection module is used to measure the voltage value between each pin on to be measured circuit board and to be measured circuit board GND end;Motion control system controls XYZ three-axis displacement system movement to adjust the position of detection module, and there is perfect same type circuit board pin volt-ampere characteristic database in monitoring and data acquisition comparison system.The utility model system can realize to be measured circuit board in situ fault detection, will not cause damage to circuit board, and can accurately position circuit fault area, detection efficiency is high and cost is low.

The application provides a carbon nanodot-based temperature sensor and a preparation method thereof. The carbon nanodot-based temperature sensor comprises, from bottom to top, a substrate layer, an interdigital electrode layer and a sensing layer. The sensing layer comprises hydrophilic carbon nanodot particles and an ionic salt. The sensing layer is formed by drop coating of a mixed aqueous solution of the hydrophilic carbon nanodot particles and the ionic salt. The preparation method is simple and easy to implement, and has low cost. The prepared temperature sensor has high sensitivity, high precision and high stability. The sensitivity of the temperature sensor reaches 345951.8%℃ ‑1 .

The application provides a road slope measurement method and system based on mobile crowd sensing, comprising the following steps: S1: dividing a to-be-predicted area and a predicted area, assigning a data collection task, and collecting data to the cloud; S2: after the cloud multi-modal sensing data is time-space aligned, performing frame-by-frame correlation matrix operation, fusing the coordinate and the attitude vector of the mobile device, and dividing the space position into a training set and a test set after removing data noise; S3: extracting time-domain features and frequency-domain features from the training set and the test set data, and calculating individual independent features; S4: training and testing the model by using the individual independent features, and further performing data aggregation and result optimization on the preliminary prediction result. The application is beneficial to efficiently and low-costly realizing large-scale road slope sensing, beneficial to establishing a city three-dimensional map, further enriching the content of the current digital map, and shortening the data updating cycle.

This application discloses a method, tooling, and assembly structure for measuring the roundness of large cylindrical or cylindrical structures, belonging to the field of industrial measurement technology. The measurement method includes: fixing multiple measuring toolings at corresponding positions at both ends of the workpiece; and determining the theoretical initial value R of the workpiece radius extension. 延长 Determine the coordinates of the predetermined points, such that the actual distance from each predetermined point to the center of the workpiece end circle is R. 延长 The method involves setting measurement lines and measuring the actual distance between each measurement line and the outer surface of the workpiece. The roundness of the workpiece is determined by its actual outer diameter. The measuring fixture includes a connected fastening assembly and a positioning assembly, with the positioning assembly equipped with a reflective plate for positioning predetermined points. The measuring assembly structure includes multiple measuring fixtures located at both ends of the workpiece. The measurement lines corresponding to the same equally spaced positions at both ends of the workpiece are parallel. This application measures the roundness of the outer surface of a large cylinder from the outside, significantly reducing the operational difficulty of the measurement, achieving higher measurement accuracy, and simplifying the measurement of the roundness of large cylinders.

This utility model discloses a concrete specimen size measuring device, including a support platform with two support plates on it. A forward-backward propulsion mechanism is slidably connected to the two support plates, and a left-right propulsion mechanism is mounted on the forward-backward propulsion mechanism. A measuring component is mounted at the bottom of the left-right propulsion mechanism. Driven by the forward-backward and left-right propulsion mechanisms, the measuring component moves, enabling the measurement of dimensions at various points on the concrete specimen. This relates to the field of size measurement technology. By setting the forward-backward and left-right propulsion mechanisms, the measuring component can be driven to move arbitrarily, and the scale plate in the measuring component can rotate, thereby enabling the measurement of lateral dimensions at various points in the forward-backward direction and longitudinal dimensions at various points in the horizontal direction, thus achieving measurement of various points on the specimen and improving the measurement efficiency of concrete specimens.

This invention belongs to the field of engineering measurement tool technology, and provides a multi-purpose rotatable ruler with a collar, including a main ruler, a dividing ruler, a secondary ruler, a rotating assembly, and a sliding assembly. A cavity is provided for the main ruler to house the dividing ruler, which can be inserted into the cavity via the rotating assembly, thus folding and reducing the overall size for easy carrying. The ruler's dimensions can be changed by rotating the dividing ruler to meet different measurement requirements. The dividing ruler also features a slider and support structure for measuring concrete spread. The secondary ruler can measure concrete slump, expanding the applicability of the measurement.

The utility model belongs to diesel engine frame main bearing hole center line measurement technical field, concretely relates to a diesel engine frame main bearing hole center line measuring device, including diesel engine frame, the inside of diesel engine frame is passed through and has the measuring frame, one end of measuring frame is fixedly connected with two connecting seats, one end rotationally connects the limit stop of two connecting seats, the inside slide connection of measuring frame has T type sliding block. The utility model discloses through the connecting rope one end from the first connecting ring and the second connecting ring are passed through, then will measuring frame from the main bearing hole of diesel engine frame inside passes, again utilize the limit stop and prop up diesel engine frame, again through the sliding connection structure between indicating ring and measuring frame, will indicating ring remove to the exit of main bearing hole, according to the residence position of indicating ring on the scale on this moment, can conveniently realize diesel engine frame main bearing hole center line measurement, and can also effectively save the repair cost.

The utility model relates to wire diameter measurement technical field discloses a kind of wire diameter measurement structure, including rack, the top of the rack is fixedly connected with support frame, the top of the support frame is fixedly connected with measuring component, the left and right sides of the measuring component are provided with wire slot, the top of the rack is provided with centering mechanism, the top of the rack is provided with conveying mechanism, the front side of the centering mechanism is provided with driving mechanism, the driving mechanism is used to drive centering mechanism operation, the inside of the centering mechanism is provided with measuring mechanism, and the measuring mechanism is used to detect wire. In the utility model, left conveying mechanism gyro wheel drives wire right sending, close to centering mechanism, driving mechanism works according to wire thickness, changes bidirectional screw rod rotation by control system servo motor, drives sliding block and positioning U-shaped block, adjusts conical guide roller spacing.

The utility model relates to ball screw measurement technical field, especially a kind of ball screw's pitch diameter measuring instrument, the one end of installation box length direction is equipped with micrometer, the measuring head of micrometer is inserted into installation box, and the movable member is slidably arranged in installation box, and the movable member includes the guide rail slidably connected with installation box, the first clamping arm fixedly connected at one end of guide rail, adjustment slot is set up on installation box for the first clamping arm to extend and reciprocatingly slip, the outer circumferential surface of installation box is equipped with the second clamping arm with its detachable connection, the first clamping arm and the second clamping arm are oppositely arranged, and the end of both is equipped with contact measuring ball, the first clamping arm is located at the one end of installation box close to micrometer, the second clamping arm is located at the one end away from micrometer, installation box is also equipped with spring to make the first clamping arm after sliding reset, the utility model has the beneficial effects that: improve measurement accuracy and efficiency.

A portable vertical multilayer ultrasonic flow measurement device includes a main measuring unit, at least two sets of ultrasonic transducer groups, at least two auxiliary measuring components, a first signal transmission component, a second signal transmission component, a first protective component, a second protective component, and a fixing component. Each ultrasonic transducer group includes a first ultrasonic transducer and a second ultrasonic transducer. The auxiliary measuring components are arranged parallel to each other. The first and second ultrasonic transducers are arranged on the same outer wall of the auxiliary measuring components along the flow direction of the fluid to be measured. The first signal transmission component connects the first ultrasonic transducers and the main measuring unit. The second signal transmission component connects all the second ultrasonic transducers and the main measuring unit. The first protective component is located on all the auxiliary measuring components and houses all the first ultrasonic transducers and the first signal transmission component. The second protective component is located on the auxiliary measuring components and houses all the second ultrasonic transducers and the second signal transmission component. The fixing component connects each auxiliary measuring component. This application improves the accuracy of flow velocity measurement.

This invention discloses a laser measuring device for architectural engineering surveying, relating to the field of laser measuring technology. It includes a first measuring plate and a second measuring plate, with a second support plate fixedly connected to the top surface of the second measuring plate. When measuring the dimensions of a load-bearing column, the laser measuring device uses self-locking casters to move the device, positioning the ends of the second and first support plates on either side of the load-bearing column. This allows the side of the second support plate to mate with one side of the load-bearing column. Rotating a first knob drives a first screw to rotate, and the threaded engagement between the first screw and a telescopic column moves the telescopic column and the first support plate, bringing the side of the first support plate into contact with the other side of the load-bearing column. A first laser rangefinder measures the distance between the first and second support plates, which is the width of the load-bearing column, thus enabling convenient measurement of the width of the load-bearing column.

A flexible pressure sensing device and its fabrication method are disclosed, relating to the field of medical wearable device technology. The flexible pressure sensing device includes a substrate and a sensing unit connected to the substrate. The substrate includes a first component and a second component arranged adjacent to each other. The first component is configured to generate a first deformation acting on the sensing unit when subjected to positive pressure, and the second component is configured to generate a second deformation acting on the sensing unit when subjected to shear force. The sensing unit is configured to output a first signal corresponding to the positive pressure based on the first deformation, and to output a second signal corresponding to the shear force based on the second deformation. It can simultaneously detect positive pressure and shear force, and has a simple overall structure, which is beneficial to improving applicability.

The utility model discloses a kind of tool for measuring battery single cell voltage, it includes: voltmeter, positive probe lead and negative probe lead are connected on the voltmeter;Positive stainless steel probe, the positive stainless steel probe is L type structure, the positive stainless steel probe is located at the end of the positive probe lead;Negative stainless steel probe, the negative stainless steel probe is L type structure, the negative stainless steel probe is located at the end of the negative probe lead;After the positive stainless steel probe and negative stainless steel probe of L type pass through battery upper cover exhaust plug hole, respectively with positive busbar and negative busbar contact, compared with traditional straight probe, the product can directly complete voltage single cell detection by exhaust plug hole or pressure reducing valve hole, and detection is efficient.

The application discloses a microstructure measurement method and device, electronic equipment and storage medium, comprising setting an acoustic load layer on the surface of a sample to be detected, the acoustic load layer is a substance in colloidal form, testing the sample to be detected based on a resonant structure array, obtaining multiple thickness data of the acoustic load layer on the surface of the sample to be detected, determining target thickness data of the acoustic load layer from the multiple thickness data, the target thickness data being the maximum value in the multiple thickness data, determining thickness data of the surface protrusion of the sample to be detected based on the target thickness data and non-target thickness data, the non-target thickness data being thickness data excluding the target thickness data from the multiple thickness data. The embodiment of the application realizes the measurement of the thickness information of the surface to be detected based on the acoustic load periodic modulation principle of the high-order overtone bulk acoustic wave resonator, and the method has the characteristics of high reliability and no loss to the surface of the sample to be detected.

This invention provides a method for measuring the bore caliber of a gun barrel. The specific process is as follows: Based on the inner wall contour image of a standard ring gauge, a three-dimensional laser point cloud of the standard ring gauge is obtained; a point P is randomly selected in the three-dimensional laser point cloud, and multiple planes containing point P are created to intersect the three-dimensional laser point cloud; for each intersecting elliptical cross-section, the point with the largest distance from point P is selected, and multiple selected points form a point set N; the point with the smallest distance from point P in the point set N is obtained, and the smallest distance is used as the pixel distance of the standard ring gauge, and the physical distance corresponding to a single pixel is calculated; based on the bore image of the gun barrel, its three-dimensional laser point cloud is obtained, and the point cloud of the plane containing the point with the smallest distance in the bore image of the gun barrel is obtained for curve fitting, and the diameter of the inscribed circle of the curve is calculated; based on the physical distance corresponding to a single pixel and the pixel diameter of the inscribed circle of the bore, the inner diameter of the bore is calculated, thereby realizing the measurement of the bore caliber.

This invention discloses an automatic measurement device for the form and position tolerances of a large-size shell segment. An upper end face measurement sensor is aligned with the upper end face of the shell segment being measured, used to acquire feature data of the upper end face of the shell segment when it rotates. A lower end face measurement sensor is aligned with the lower end face of the shell segment being measured, used to acquire feature data of the lower end face of the shell segment when it rotates. A tail fin measurement sensor is used to acquire feature data of the center surface of the tail fin when the shell segment is fixed. An end frame measurement sensor is aligned with the cylindrical surface of the upper or lower end frame of the shell segment being measured, used to acquire feature data of the cylindrical surface of the upper or lower end frame when the shell segment rotates. This invention also discloses a measurement method capable of measuring the product's roundness, flatness, parallelism, coaxiality, tail fin centripetal force, product height, product diameter, and other external dimensions and form and position tolerances.

This utility model discloses an insulation resistance measuring tool for suspension insulators, belonging to the field of suspension insulator testing technology. The tool includes an insulation resistance meter, an insulating support plate, an insulating telescopic rod, and two hook-shaped connectors. During measurement, the two wires of the insulation resistance meter are electrically connected to the two hook-shaped connectors, with the hook ends of the connectors connecting to the two ends of the insulating sheet to be tested on the suspension insulator. Workers only need to stand on the ground and manually lift the insulating telescopic rod to easily hook the two hook-shaped connectors onto the two ends of the suspension insulator, thus measuring the insulation resistance. This allows workers to quickly complete the insulation resistance measurement of suspension insulators, saving significant time spent climbing the pole and disassembling and restoring the insulator, improving work efficiency, and enabling more efficient power work.

The utility model discloses a kind of measurement tools of vehicle-mounted photoelectric turntable base parts, including bottom plate, round cooperation board is provided on the bottom plate, cooperation board is provided with connecting hole, connecting hole is provided with pin for adapting 6 Ø4.2 holes, cooperation board is also provided with the slot for cooperation Ø2 hole, cooperate with the outer circle of cooperation board through Ø111 ring groove, by making Ø2 hole align slot, and plug in corresponding Ø2 mandrel, cooperation and plug-in operation have no obvious resistance, then size is qualified, realize measurement;Inverted plug-in pin in connecting hole, so that the first shaft section is adapted with corresponding 6 Ø4.2 holes, ensure that pin plug-in and rotate through third shaft section all have no obvious resistance, then size is qualified, realize measurement.

This invention relates to the field of viscous particle property measurement technology, and discloses a device and method for measuring the normal and tangential interaction forces between viscous particles. The device includes: a base, on which a first three-axis moving platform and a second three-axis moving platform are mounted; a first force sensor and a second force sensor are mounted on the first three-axis moving platform; the first force sensor detects the force on the lower particle in the vertical direction, and the second force sensor detects the force on the lower particle in the horizontal direction; the first and second three-axis moving platforms drive the upper and lower particles to move; and a syringe is used to inject liquid between the upper and lower particles to form a liquid bridge or a solid bridge. After injecting liquid to form a liquid bridge or solid bridge between the upper and lower particles, the forces on the lower particle in the vertical and horizontal directions are detected by the first and second force sensors, thereby measuring the normal and tangential interaction forces between the viscous particles.

The utility model discloses a kind of gas leakage detection devices of welded heat-insulated gas cylinder, it is related to gas leakage detection technical field, and the gas leakage detection device of welded heat-insulated gas cylinder includes gasbag and flow detector, one end of gasbag is open setting, for covering the valve of the outside of welded heat-insulated gas cylinder and covering welded heat-insulated gas cylinder, gasbag is connected with welded heat-insulated gas cylinder by sealing structure and sealing, flow detector is set by pipeline and communicates gasbag, and flow detector is used to detect the gas flow of the valve leakage of welded heat-insulated gas cylinder.Such setting, gasbag and the outside of welded heat-insulated gas cylinder are sealed by sealing structure and sealing, to guarantee the sealing performance of the gas leakage detection device of welded heat-insulated gas cylinder, adopt gasbag, to reduce the volume and weight of the gas leakage detection device of welded heat-insulated gas cylinder, and when not needing to carry out leakage detection, user can store the gas leakage detection device of welded heat-insulated gas cylinder, convenient to dismount and carry.

The present application relates to a kind of particle identification and detection method based on deep learning improved algorithm, it includes the following steps: using electric sensitive area method obtains the electric signal of multiple particle;Extract the time domain, frequency domain and time-frequency domain characteristic parameters of electric signal;Characteristic parameters are combined to enhance the difference between characteristics;Screening characteristic parameters to reduce the amount of operation;Neural network and recurrent neural network model are weighted fusion;Using fusion model to test multiple repeat for the particle to be measured, using voting mechanism to determine the final classification result;The concentration, quantity proportion and particle size distribution of each kind of particle are output.The particle identification and detection method provided by the present application can realize the measurement of particle type, concentration and particle size distribution in water, improve the accuracy, accuracy and stability of water quality monitoring, provide more comprehensive information for water plant operation and environmental monitoring, so that the particle identification and detection method can be better applied to practical application.

This application relates to the field of aircraft technology and discloses an aircraft ground towing trailer. This aircraft ground towing trailer is used for lifting and towing aircraft, including a towing unit and a frame unit that can move horizontally and vertically through the towing unit. The frame unit can enter and exit the area under the aircraft under the action of the towing unit. Multiple positions on both sides of the frame unit can move close to and connect to the landing gear of the aircraft, supporting and lifting the landing gear while simultaneously measuring the pressure values ​​of the landing gear at multiple positions on both sides of the frame unit, thereby calculating the center of gravity position of the aircraft using the pressure values. This aircraft ground towing trailer can easily enter the area under the aircraft, support the landing gear of the aircraft through retractable components, complete the towing work of the aircraft, and simultaneously realize the measurement of the aircraft's center of gravity, saving time and effort.