36results about How to "Solve the problem of detection accuracy" patented technology

The invention relates to a method for detecting a large-caliber aspheric optical element by utilizing a three-coordinate measuring machine, which comprises the following steps of: processing the data obtained by the three-coordinate measuring machine by utilizing an information processing technology, carrying out error compensation on the measuring head of the three-coordinate measuring machine by adopting a method for compensation by utilizing the measuring head, eliminating the tilting and translation errors of detected data by utilizing a least square method, eliminating the constant term and the tilting term after surface shape data Zernike polynomial fitting by a Gram-Schmidt orthogonalization method, and restoring the surface shape of the detected large-caliber aspheric optical element to realize the purpose of high-precision three-coordinate measurement of the large-caliber optical element. The invention comprehensively considers the error source of the three-coordinate measuring machine of the detected large-caliber aspheric optical element, so that the surface shape quality of the optical element can be more truly and objectively evaluated. The invention is used for processing the surface shape measurement error of the optical element by adopting the measuring-head compensation and least square methods and has important application value for the surface shape detection of the high-precision large-caliber optical element.

The invention provides a pillow and method for detecting the head position through Hall sensing devices. The pillow comprises a pillow inner and a plurality of Hall sensing assemblies and a controller which are arranged in the pillow inner; each Hall sensing assembly comprises a Hall sensor and a magnet which are correspondingly arranged in the same vertical direction, an elastic separation distance is formed between each Hall sensor and the corresponding magnet and changes under the head pressure action, the Hall sensors are connected with the controller, and the controller detects the head position according to the output analog quantity of the Hall sensors. According to the pillow, the sensing mode that the Hall sensors are adopted to cooperate with the magnets is sensitive and accurate, the heads of users with the different weights all can enable the elastic separation distances to change, and the Hall sensors can sense changes of the magnetic field intensity. Accordingly, the problem that the detection accuracy is influenced by the different weights of the users is solved, and the advantages of being capable of being applied to the users with the different weights, accurate in detection and wide in applicability are achieved.

A laser scanning device includes a laser output unit, a scanner, a light splitting unit, an imaging compensation unit, a detection unit, and a control unit. A scanning focusing unit included in the scanner focuses a laser beam emitted by the laser output unit to scan an object. A visible light beam received by the canning focusing unit is reflected by the light splitting unit and is incident into the imaging compensation unit. Next, the detection unit receives the visible light beam passing through the imaging compensation unit, and outputs a detection signal. The control unit adjusts the detection signal according to the wavelength of the visible light beam, the wavelength of the laser beam, the scanning focusing unit, and the imaging compensation unit. Therefore, the laser scanning device may compensate the aberration and the dispersion caused when the visible light beam passes through the scanning focusing unit.

The invention discloses a sampling device for quarantine of imported and exported animals, and belongs to the technical field of quarantine sampling devices. The sampling device for quarantine of imported and exported animals comprises a mounting box body and antiskid supporting legs, wherein a storage mechanism is mounted at the lower end of the mounting box body, the antiskid supporting legs are fixedly connected to the four corners of the bottom face of the mounting box body, a connecting hinge is fixedly mounted on the horizontal edges of the top end of the back face of the mounting box body, a box cover is fixedly connected to the connecting hinge, the box cover is movably connected with the mounting box body through the connecting hinge, locking devices are fixedly mounted on the horizontal edges of the front surfaces of the mounting box body and the box cover, a connecting block is rotationally connected to the side wall of the mounting box body, and a strap is fixedly connected to the connecting block. In the prior art, the existing design structure is simple, shaking and collision may occur during storage, and in severe cases, the test tube may even be broken and the sample may be easily contaminated during storage and transfer to the preservation mechanism, which affects the accuracy of sample detection. According to the invention, the problems in the prior art are effectively solved.

The invention discloses a method for detecting hydrogen by a palladium nanoparticle discrete film. The method comprises the following steps that: palladium hexafluoroacetone (II), formalin, a quartz glass substrate, high-purity nitrogen and a carbon-supporting film are firstly prepared; under a vacuum environment, palladium hexafluoroacetone (II) is introduced into a reaction chamber as a precursor, and chemical absorption and chemical reaction are generated by the precursor of palladium hexafluoroacetone (II) and the surface of the quartz glass substrate; the formalin as a precursor generateschemical reaction with palladium hexafluoroacetone (II) as the precursor combined with the substrate. The method disclosed by the invention has the beneficial effects that the response rate of a sensing film to the hydrogen can be effectively increased, the phase change phenomenon caused by pure palladium in the high-concentration hydrogen can be effectively avoided, the accuracy of detection canbe ensured, and the problems that a palladium-yttrium alloy film in the existing optical-fiber hydrogen sensor is easily poisoned by oxygen in the air to cause foaming and cracking and the like of the film to further cause zero drift and influence the accuracy of hydrogen detection are solved.

The invention discloses an overturning and flattening device for image recognition ready-made clothes damage detection, which relates to the technical field of ready-made clothes detection. The overturning and flattening device comprises a set of supporting plates, wherein a set of first fixing plates is fixed between every two supporting plates, a first flattening mechanism is fixed to one surface of each first fixing plate, and a set of second flattening mechanisms, a set of image recognition and detection mechanisms and a turnover mechanism are fixed between every two supporting plates. Through cooperation of the first flattening mechanisms and the second flattening mechanisms, clothes conveyed on a conveying belt can be effectively flattened, thus the flattening efficiency is better and the flattening effect is better when the clothes are subjected to damage detection; a plurality of round rollers in the turnover mechanism are driven by means of a second motor to rotate, so that rubber columns on the round rollers turns over the clothes quickly and effectively with cooperation of the supporting plates and the overturning plates, thereby improving the clothes detection efficiency, reducing the manpower consumption in the clothes detecting process, meanwhile, improving the clothes detection precision, and being conductive to later selling of the clothes.

The invention discloses a high-voltage bushing detection method based on Hu invariant moment and an SVM. The method comprises that a picture obtained by a tour inspection robot is preprocessed; afterthat the picture is converted into a grayscale map, a Niblack method is used to carry out binary-threshold segmentation on the picture, and interference of complex background is removed; according toshape characteristics of the bushing and an interference object, a morphological method is used to corrode and expand the picture, and the position of an area where the bushing exists possibly is obtained; after preprocessing, the Hu invariant moment is used to calculate the area where the bushing exists possibly in the picture; and a characteristic obtained by calculation is used to train the SVMand adjust parameters, and the SVM is used to identify and locate the SVM. Under the condition that the background of a transformer station is complex, the method is good in detection performance, and the problem that the high-voltage bushing may not be detected accurately in the complex environment is solved.

The invention discloses a power equipment infrared image detection method and system based on deep learning, and the method comprises the steps: collecting a detected power equipment infrared image, inputting the power equipment infrared image into a pre-trained power equipment infrared image classification model, and obtaining a detection result of the detected power equipment, the power equipment infrared image classification model comprises a trunk feature extraction network used for extracting features of different levels; the enhanced feature extraction network FDAN is used for performing feature enhancement on the low-level features extracted by the trunk feature extraction network based on a double attention module DAM; and the detection head network is used for carrying out detection based on the feature after feature enhancement to obtain a detection result of the power equipment. The method can solve the problem that it is difficult to improve the detection precision of the infrared image of the power equipment in a complex scene on the basis of guaranteeing the real-time performance in an existing method, the detection precision of the power equipment is high, manpower can be saved, and the purposes of efficiency improvement and energy conservation are achieved.

The invention discloses a method for preparing a molecularly imprinted monolithic column. Sulfamethoxazole (SMO) with the molecular structure similar to that of triamterene serves as a pseudo template molecule to prepare the molecularly imprinted monolithic column capable of achieving selective testing of triamterene (TAT).The problem that traditional template molecule leakage affects detection accuracy is solved.

The invention provides a method for determining the content of calcium hydroxide in a flue gas desulfurizer. The method comprises the following steps: adopting an X-ray diffraction method; under the same diffraction condition, respectively determining the integral intensity of a calcium hydroxide phase in a standard sample and the integral intensity of a calcium hydroxide phase in a to-be-tested flue gas desulfurizer sample, and drawing a working curve of the integral intensity of the calcium hydroxide in the standard sample; and according to the determined integral intensity of the to-be-tested sample, finding out the content of calcium hydroxide in the to-be-tested sample from the working curve of the integral intensity of the calcium hydroxide in the standard sample, and calculating to obtain the content of the calcium hydroxide in the to-be-tested sample, so that a judgment basis is provided for the quality and efficient utilization of the flue gas desulfurizer, and the measurement of the calcium hydroxide content in the flue gas desulfurizer is more accurate.

The invention discloses a method for immobilizing hepatitis B antibody on the surface of a medical device, which mainly includes: 1) pretreatment of the surface of the device body, 2) preparation of holes, 3) post-treatment of the surface of the device body, and 4) process steps of fixing the antibody. It is characterized in that: the process steps of immobilizing antibodies are: treating the bracket with holes with citrate buffer solution; immobilizing hepatitis B antibody and incubating; storing at low temperature after drying; providing serum albumin nutrient buffer solution and incubating; cyclically variable temperature incubation ; fluorescently labeled and incubated; washed and allowed to dry. Compared with the prior art, the present invention has the advantages of high firmness of antibody immobilization, high activity of the antibody on the scaffold, and high detection accuracy.

The invention provides a sampling device which comprises an impurity removal part and a sampling part, wherein the impurity removal part is communicated with a sampling port of a sampling apparatus and receives detection gas in the sampling apparatus and removes impurities in the detection gas; an impurity discharge port is formed at the impurity removal part; and the sampling part is communicated with the impurity removal part and used for discharging the detection gas after impurity removal. According to the invention, through the impurity removal part, at the time when the detection gas conveyed by the sampling apparatus is received, the impurity removal part performs impurity removal treatment on the detection gas, the impurities in the detection gas can be discharged in time, and thus the detection gas can meet the requirements of the detection equipment, the contamination of the detection gas caused by impurities is avoided, the integrity and purity of all components in the detection gas are effectively guaranteed, the treatment effect of the detection gas is improved, and the accuracy of the detection result of the detection equipment is enhanced.

The invention relates to a sampling device, in particular to a different-depth sampling device for liquid food detection. The sampling device comprises a liquid storage device and a guide device arranged in the liquid storage device, the liquid storage device comprises a shell, and a sliding cavity, a liquid inlet cavity, a liquid storage cavity and a negative pressure cavity are sequentially formed in the shell. The shell is pressed to enable the piston block to drive the first magnet block to move upwards, the first magnet block moves upwards to drive the baffle on the lower portion to move upwards through magnetic force, the liquid inlet in the bottom is forced to be closed, liquid at different depths can be sampled at a time, and the problems that according to an existing method, liquid needs to be sampled at different depths for multiple times during detection, and the sampling efficiency is high are solved. The liquid is easy to shake in the insertion process, so that the liquid at different depths is mixed, and the detection accuracy is influenced.

The invention discloses a lane line detection method and device based on a neural network, equipment and a medium, and the method comprises the steps: obtaining lane line data collected by an automatic driving vehicle in a preset period, and generating a lane line data set; inputting the lane line data set into a preset neural network for lane line recognition to obtain an estimated lane line set; performing clustering fusion processing on the estimated lane line set according to a target clustering algorithm to obtain each group of calibrated current lane lines, and generating a current lane line set; matching the current lane line set with a preset map to obtain a target map set; and according to the current lane line set and the target map set, detecting whether the current lane line is an actual lane line of the autonomous vehicle. According to the embodiment of the invention, the neural network is constructed to estimate the acquired lane line data, and map matching and detection are performed after lane line calibration, so that the accuracy and reliability of lane line detection are greatly improved, and the detection error is reduced.

The invention relates to a suspended wire type blood viscosity meter based on Internet of Things and AI technology. The original components thereof comprise a measurement module, a turntable module, acontrol circuit module, a sensor module, a sample loading module, a cleaning module and a software module. The original components are connected with a front-end single component to form a front-endinstrument; the front-end standalone component comprises a standalone data interaction module, a standalone automatic calibration module and a standalone video module; the front-end instrument communicates with a central end component disposed in the cloud through the Internet of Things; the central end component comprises a cloud center control module, a cloud data interaction module, a cloud automatic calibration module, a cloud video module, and a cloud storage module, which avoids human factors from affecting the detection accuracy of a medical detection device and improves the intelligence and accuracy of the device.

The present invention provides a plasma mass spectrometer sample introduction pipe frame structure. The structure comprises a cross lead screw, a nut base, an electric pusher, a lantern ring, a supporting rod, a bayonet, a rotating shaft, a gear 1 and a gear 2. The cross lead screw is installed at the middle portion of the internal portion of a regulation groove, the nut base is installed at the annular side of the cross lead screw, the electric pusher is welded at the upper end face of the nut base, the lantern ring sleeves the annular side of the electric pusher, the supporting rod is weldedat the left portion of the annular side of the lantern ring, the bayonet is arranged at the left side of the upper end face of the supporting rod, the rotating shaft is welded at the middle portion of the lower end face of a carrying frame, the lower end of the rotating shaft is installed at the upper side of the internal portion of a groove, the gear 1 sleeves the lower portion of the annular side of the rotating shaft, the gear 1 is engaged with the gear 2 through a wheel tooth, and the gear 2 is installed at the right side of the internal portion of the groove. The fast take-out function of a sample introduction pipe is achieved, the structure is novel, the sample introduction pipe is prevented from being polluted, and the cleanness of a liquid inlet pipe is ensured.

The invention discloses a light detection method, a light detection device and electronic equipment, which belong to the technical field of communication. The method is applied to the electronic equipment. An infrared light emitter and an infrared light receiver are arranged in the electronic equipment; the infrared light emitter emits linear swept-frequency infrared light to the outside of the electronic equipment under the control of the electronic equipment; and when the infrared light receiver receives the reflected light of the linear swept-frequency infrared light, the light intensity ofthe received reflected light and the frequency difference between the light emitting frequency of the infrared light emitter and the light frequency of the received reflected light are determined, and whether the received reflected light is the reflected light of the external object or the interference light is judged according to the frequency difference and the light intensity. Therefore, the embodiment can recognize whether the received reflected light is the reflected light of the external object or the interference light, eliminates the interference of the interference light, and solvesa problem that the detection precision of the object is reduced because the interference light cannot be recognized when the approaching object is detected in the prior art.

The invention relates to the technical field of track detection, in particular to a track data real-time collecting and processing device which comprises a mounting box, a solid rotating cylinder is arranged in the mounting box, the bottom of a cylinder body of the rotating cylinder extends downwards to the bottom of the mounting box, a channel is formed in the cylinder body of the rotating cylinder in the radial direction, and a spring is arranged on the bottom wall of the channel. A movable plate is arranged at the end, away from the bottom wall of the channel, of the spring, a mounting plate is connected to the movable plate through a fastener, and a load detector is mounted on the mounting plate. According to the invention, the problem that the detection accuracy is affected due to vibration when track load real-time detection equipment is used is solved; on one hand, the detection position can be adjusted according to needs, vibration in the detection process can be reduced, the detection accuracy is improved, on the other hand, workers can conveniently and rapidly assemble, disassemble and take the equipment, and operation is convenient and reliable.

The invention provides a pillow and method for detecting the head position through Hall sensing devices. The pillow comprises a pillow inner and a plurality of Hall sensing assemblies and a controller which are arranged in the pillow inner; each Hall sensing assembly comprises a Hall sensor and a magnet which are correspondingly arranged in the same vertical direction, an elastic separation distance is formed between each Hall sensor and the corresponding magnet and changes under the head pressure action, the Hall sensors are connected with the controller, and the controller detects the head position according to the output analog quantity of the Hall sensors. According to the pillow, the sensing mode that the Hall sensors are adopted to cooperate with the magnets is sensitive and accurate, the heads of users with the different weights all can enable the elastic separation distances to change, and the Hall sensors can sense changes of the magnetic field intensity. Accordingly, the problem that the detection accuracy is influenced by the different weights of the users is solved, and the advantages of being capable of being applied to the users with the different weights, accurate in detection and wide in applicability are achieved.

The invention relates to a gas drainage parameter determinator capable of being movably fixed, the gas drainage parameter determinator comprises a determination box and a moving assembly, the determination box comprises a box body and a sealing disc, the moving assembly comprises a mounting plate, a herringbone rod, a driving part, a determination frame and a determinator, during gas drainage determination, gas is guided in through a wind tunnel in the box body, the driving part operates to enable the herringbone rod to rotate, and the determination frame is driven by the driving part to rotate; the herringbone rod rotates to push the measuring frame at the top, so that the measuring instrument in the box body moves, the position of a probe on the measuring instrument is adjusted, the probe is located at the center of a gas wind tunnel, the measuring accuracy of the measuring instrument is improved, the sealing disc and the box body form a sealed environment, inaccurate data detected by the measuring instrument caused by gas leakage is prevented, and the measuring accuracy is improved. The problems that the probe position of an existing tester is improper and cannot be adjusted, and detection accuracy is affected are solved.

The invention belongs to the technical field of test bed, and particularly relates to an aviation piston engine ground test bed system which comprises a base, a baffle is arranged at the top of the base, a front support and a rear support are arranged at the top of the base, a cross beam is arranged between the front support and the rear support, and the front support is located at the end, away from the baffle, of the rear support. A buffering corrugated pipe is arranged at the top of the rear support, an engine is arranged at the top of the buffering corrugated pipe, a connecting belt is arranged at the top of the engine, and a center console is arranged on the side, away from the engine, of the baffle. One end, far away from the baffle plate, of the rear bracket is provided with an air inlet, the other end of the rear bracket is provided with a connecting beam, and the other end of the connecting beam is fixedly connected with the baffle plate. And meanwhile, resonance of the base and the engine is avoided when the engine vibrates, and the operation comfort and the durability of the device are improved.

The invention relates to the technical field of monitoring, and provides a method and a system of construction safety monitoring. The method comprises the steps that each frame of image in collected video data is converted to gray level; difference operation is carried out on the gray level image and a corresponding modeling background; and the image after the difference operation is detected through a preset threshold value. The problem of detecting accuracy on construction environment through an image processing technology is solved, rockfall and vehicle going in and out in a construction tunnel are intelligently detected through a self-adaptation algorithm, working intensity of monitoring personnel can be lowered, and safety of tunnel construction is guaranteed.

The invention discloses a touch-control module, electronic equipment and a pressure calibrating method and belongs to the technical field of touch-control display. The touch-control module comprises a touch screen, a first pressure touch-control sensors, b second pressure touch-control sensors and a touch-control IC (Integrated Circuit), wherein each first pressure touch-control sensor is located in an area where circumferential part of the touch screen is located; each second pressure touch-control sensor is located in an area where an intermediate part of the touch screen is located; and each first pressure touch-control sensor and each second pressure touch-control sensor are respectively and electrically connected with the touch-control IC. According to the touch-control module, the electronic equipment and the pressure calibrating method, the problem that the detection precision of the pressure touch-control sensors for a pressure signal is affected due to deformation of circumferential edge parts of the touch screen of the electronic equipment caused by external factors such as pressing and falling is solved, thus the electronic equipment does not respond the pressure signal generated by deformation, and error response is prevented.

The invention discloses a method for detecting a parking space through double barrels. The method comprises: 1, a vehicle driving into the parking space; 2, a geomagnetic sensor in a parking space detector II sensing the change of a magnetic field, and when the change of the magnetic field reaches a preset change threshold value, starting 125KHZ wireless signals to be transmitted; 3, the parking space detector I being awakened by a 125KHZ wireless signal transmitted by the parking space detector II and enters a receiving mode; 4, the parking space detector I judging whether the data is sent bythe parking space detector II or not according to the received data; 5, if so, taking out a received signal intensity value, and judging the state of the parking space according to a trigger threshold value; and 6, if not, continuing to enter a low-power-consumption interception state, and ending. The double-barrel parking space detection technology, the radar technology, the ultrasonic technology and the like have the advantages that the frequency is low, the penetrability is good, and 125Khz wireless radio frequency signals can be suitable for severe weather such as rain and snow, so that the problem of low parking space detection accuracy under the condition of severe weather such as rain and snow is solved.

The invention relates to an in-situ detection device for compressive strength of a sintered common brick by a clamping-twisting method. The in-situ detection device comprises two metal clamping platessymmetrically arranged on side surfaces of a cuboid sample in a sintered common brick; the metal clamping plates are fixedly connected with metal chock plugs and thickness adjusting gaskets which areplugged in the metal clamping plates through fixing bolts; the cuboid sample is covered by the metal clamping plates, the metal chock plugs and the thickness adjusting gaskets; and the metal chock plugs are connected with a digital display torque wrench through metal hexagon heads. The cuboid sample in the sintered common brick is clamped through the metal clamping plates, the metal chock plugs,the thickness adjusting gaskets and the fixing bolts, and then torsion is applied to the cuboid sample through the metal hexagon heads by adopting a digital display torque wrench until the cuboid sample is twisted and damaged, and the maximum torsion value is read; the compressive strength of the sintered common brick is presumed according to a conversion formula established between the compressive strength and the torsion value of the sintered common brick, detection is accurate, design is reasonable, and practicability is high.