73results about How to "The detection structure is accurate" patented technology

The invention discloses an arc time inductor and an electrical life on-line monitoring system of a circuit breaker, wherein the arc time inductor of the circuit breaker mainly comprises an insulating shell, an electromagnetic shielding layer, a magnetic core and a metal induction coil, wherein the electromagnetic shielding layer, the magnetic core and the metal induction coil are arranged in the insulating shell; the electromagnetic shielding layer is attached to the side wall and the inner side of the rear end surface of the insulating shell; the cylindrical magnetic core is positioned in the center of the insulating shell; the metal induction coil spirally encircles on the periphery of the magnetic core, and both ends of the metal induction coil respectively extend out of the insulating shell to be used as two output ends. The arc time inductor of the circuit breaker is arranged near an arc extinguish chamber of the circuit breaker, the front end of the arc time inductor is opposite to a detected contact, and the output end of the arc time inductor of the circuit breaker is connected to a mainframe of the monitoring system. The invention can accurately determine the initial arc time and the arc duration in the on-off process of the circuit breaker so as to ensure the electrical life on-line monitoring and the comprehensive judgment accuracy of the circuit breaker.

The invention discloses a device and method for monitoring the abrasion of a pantograph slide plate based on sub-pixel edge detection. The device comprises a field control and data acquisition unit, aremote transmission unit, a data analysis unit, a data storage and release unit and a client access unit. The method comprises the steps that firstly an industrial camera collects a half-pantograph image of the pantograph slide plate; secondly, filtering processing is performed on the image; then the processed image is processed by adopting an adaptive Canny edge detection algorithm to obtain upper and lower edges of the pantograph slide plate with whole pixels, and sub-pixel edge extraction is performed on the upper and lower edges; coordinates of a sub-pixel slide plate edge image are transformed into world coordinates through camera calibration, and a residual abrasion curve of the half-pantograph slide plate is obtained; and finally, a complete residual abrasion curve of the slide plate is obtained through curve integration, the minimum residual thickness of the abrasion region is obtained so as to judge whether it is necessary to replace the slide plate or not. The device adoptsa non-contact online measurement method, and has the advantages of good stability and high detection accuracy.

The invention discloses a synthesis method and an application of Tb<3+>-modified Al-BTC nanotubes. A tubular Al-BTC nanostructure is fast synthesized at room temperature through using a direct precipitation technology with soluble aluminum salt as a metal source and basic salt of 1,3,5-benzenetricarboxylic acid (1,3,5-BTC) as an organic ligand, and the nanotubular morphology of the above obtained product has not yet been reported in literatures. The method has the advantages of no need of other additives or templates in the reaction, no need of too high temperature or strict device requirements, short time, and non-strict reaction environment requirements. An Al-BTC/Tb fluorescent material is obtained after room temperature post-treatment of the Al-BTC nanotubes, and the Al-BTC/Tb fluorescent material has a good fluorescence quenching effect on cations iron ions and anions dichromate radicals, can be used to simply and fast carry out qualitative detection of above ions, and also can realize quantitative detection of ferric iron ions in a low concentration range.

The invention belongs to the technical field of atmosphere pollutant monitoring and particularly relates to a beta-ray particulate matter concentration detection sensor and a detection method thereof.The beta-ray particulate matter concentration detection sensor comprises a shell, a beta-ray generation source, a beta-ray receiver and a dust-measuring chamber; the interior of the shell is a hollowcavity; a gas source inlet and a gas source outlet are formed at the two ends of the cavity; an inlet section and an outlet section of the cavity are particulate matter transfer spaces correspondingly; the dust-measuring chamber is arranged between the inlet section and the outlet section; the beta-ray generation source and the beta-ray receiver are arranged on the dust-measuring chamber and on the two sides of the shell correspondingly. The beta-ray particulate matter concentration detection sensor has the following beneficial effects: the whole instrument is not influenced by the temperature, the humidity and the varieties of the particulate matters, only associates with quality, can realize on-line continuous monitoring and can supervise the air quality of raise dust in a constructionsite.

The invention discloses a robot locking and riveting system and a precise servo riveting machine thereof. A guiding anti-rotation mechanism and a feeding mechanism are arranged on a clamp body. A riveting power mechanism is connected with the guiding anti-rotation mechanism and comprises a base, a power component arranged in the base, and a pressure detector fixedly mounted in the base. A gland is arranged on the base. The pressure detector is mounted between the power component and the gland in static and pre-tightened modes by the gland through pre-tightening force. The pressure detector does not make contact with the power component. Acting force of the guiding anti-rotation mechanism is output sequentially through the riveting power mechanism connected with the guiding anti-rotation mechanism, and a pressure conducting piece, so that accurate transmission of pressure is achieved. By adoption of the robot locking and riveting system and the precise servo riveting machine, accurate riveting pressure and riveting displacement can be obtained, and closed-loop online control over the riveting process can be achieved.

The invention provides a hemorheology instrument with inner and outer test tube discs. The hemorheology instrument comprises a case, and two sets of sample injection devices, two sets of detection devices, two sets of sample injection needle cleaning devices and a set of turntable device which are arranged on the case; the turntable device comprises the inner test tube disc, the outer test tube disc coaxially sleeved outside the inner test tube disc, a first driving mechanism for driving the inner test tube disc to rotate, and a second driving mechanism for driving the outer test tube disc torotate; a plurality of test tube placing positions are arranged on the inner test tube disc and the outer test tube disc, and the inner test tube disc and the outer test tube disc can rotate independently. The invention discloses the hemorheology instrument; the number of the sample injection devices, the number of the detection devices and the number of the sample injection needle cleaning devices are respectively two. The turntable device for containing blood sample test tubes is divided into the inner test tube disc and the outer test tube disc which rotate independently, the two sample injection devices conduct sampling from the outer test tube disc and the inner test tube disc respectively so as to improve the detection efficiency, and compared with the prior art that two independenttest tube disc modules are arranged, the size of the hemorheology instrument is smaller.

The invention relates to the field of low-voltage electrical apparatuses, in particular to a method for calculating the residual life of a contact of a switching electric appliance. The method comprises the steps that the contact resistance of the switching electric appliance is collected, and linear regression is carried out on obtained contact resistance; according to a linear regression line, initial impedance rc and current impedance rn are obtained; according to the initial impedance rc, the current impedance rn and the impedance variation delta r of the whole life cycle of the switchingelectric appliance, the residual life of the contact of the switching electric appliance is calculated. The method for calculating the residual life of the contact of the switching electric appliancehas the advantages that the method is simple and belongs to a direct measurement method, results are accurate, the universality is good, and popularization is easy. The invention further relates to adetection device for the residual life of the contact of the switching electric appliance, which has the advantages that the structure is simple, and the reliability of detection results is high. Theinvention further relates to a contactor, which has the advantages that the structure is simple, and the reliability of detection results is high.

The invention discloses an air-tightness detection device for a composite steel-plastic pipe fitting. The device comprises a rack and a water tank arranged on the rack. A rotating plate is pivotally connected on one side of the open end of the water tank. The two ends, which are perpendicular to the rotating axis of the pivotal end, of the upper end of the rotating plate are respectively providedwith a first seal component and a second seal component. The first seal component is arranged on the inner side of the opening of the water tank. The second seal component is arranged on the outer side of the opening of the water tank. The openings of the two ends of the steel-plastic pipe fitting are sealed through the first seal component and the second seal component. The inner diameter of theopening of the steel-plastic pipe fitting is sealed instead of sealing the two ends of the opening of the steel-plastic pipe fitting through compressing so that the steel-plastic pipe fitting is not liable to be damaged, and the detection structure is more accurate.

The invention discloses a device for detecting foreign matters in a soft bag. The device comprises a conveying bracket, a drive device, a rolling device, an image acquisition device and an image processor, wherein the conveying bracket comprises a plurality of parallel brackets which are arranged at intervals; the drive device can be used for driving the conveying bracket to move; the rolling device comprises a plurality of guide rolls capable of extruding a soft bag to be detected on the conveying bracket; the image acquisition device is arranged below the conveying bracket and can be used for acquiring image information of the soft bag to be detected on the conveying bracket and transmitting the image information to the image processor; the image processor is used for analyzing and processing the received image information and outputting a result. The device is simple in structure and convenient to use, and can be used for effectively detecting the foreign matters in the soft bag.

The invention relates to an elevator door state detection method based on a video image. The elevator door state detection method comprises the steps of: S1, collecting the video image containing an elevator door area through a camera arranged in an elevator; S2, setting an elevator door label area in the video image; S3, extracting a label area image when the elevator door is closed, and performing feature extraction and storage on the label area image; S4, performing image similarity comparison on the label area image stored in the step S3 and the elevator door label area image acquired in real time; and S5, if the similarity comparison result in the step S4 is higher than a set threshold value, outputting that the current elevator door is in a closed state, and if the similarity comparison result in the step S4 is lower than the set threshold value, outputting that the current elevator door is in an open state. The method provided by the invention is not interfered by external factors, and has better accuracy and stability. Meanwhile, according to the method, detection is carried out in a mode of combining a simple first algorithm and a complex second algorithm, and meanwhile, the requirements of accurate detection result and high detection speed are met.

The invention provides a fast target detection method. The method comprises the steps of acquiring a training image in a preset database and a target image to be detected which needs to be detected; performing sample selection processing on the training image to obtain a positive sample image and a negative sample image; extracting the feature descriptors of the positive sample image and the negative sample image; inputting the feature descriptors into a word package model to obtain feature vectors; inputting the feature vectors into a nonlinear SVM classifier for training to obtain a trainedSVM classifier, and conducting simplification treatment on the trained classifier to obtain a simplified SVM classifier; extracting candidate region images and candidate region feature descriptors inthe target image to be tested; inputting the candidate region feature descriptors into the word package model, and obtaining candidate region feature vectors; according to the simplified SVM classifier candidate region feature vectors, detecting and obtaining a detection result. The invention provides the fast target detection method, and the training of the classifier through a large number of training images makes target detection no longer limited.

The invention discloses an electrical special tool insulation degree detecting device, and belongs to the technical field of electrical insulation degree detection, the following scheme is proposed: the electrical special tool insulation degree detecting device comprises a detection box, and an insulation monitor and a PLC controller, which are disposed at the inner bottom of the detection box, atransverse isolation insulating plate is fixedly matched in the detection box, a tool tray is fixedly matched with an upper end of a rotating shaft, a lower end of the rotating shaft passes through the isolation insulating plate and is driven by a lower driving mechanism arranged at the bottom of the isolation insulating plate to rotate, humidifiers are symmetrically arranged on both sides of thetop of the isolation insulating plate, heating devices are installed on inner walls of the both sides of the detection box located above the isolation insulating plate, an air blowing mechanism is installed at the middle of a two-way screw through a transmission mechanism, and an air outlet end of the air blowing mechanism is arranged toward the tool tray. The electrical special tool insulation degree detecting device disclosed by the invention has the advantages of ingenious design, reasonable structure, multi-directional detection and simulation of various environments, so that more preciseinsulating performance data of an insulating device can be obtained, and the electrical special tool insulation degree detecting device is suitable for popularization and use.

The invention provides a piston ring radial pressure detection device comprising a measuring table, flexible element, a fixed end, an adjustment end and a fixture, wherein the flexible element is wound on the periphery of a piston ring; the fixed end is arranged on the measuring table; one end of the flexible element is connected with the fixed end; the adjustment end is arranged on the measuring table; the other end of the flexible element is connected with the adjustment end and can be operationally driven to move by the adjustment end; and the fixture is used for clamping the piston ring operationally. The invention has the beneficial effects that the piston ring is compressed to an actual working state by using a frock clamp, the radius increment of each point is measured when the piston ring is in work, and the actual continuous pressure distribution of the piston ring is obtained further; the detection structure is accurate, and the steps are simple.

The invention discloses a novel vacuum microelectronic pressure sensor, which comprises a sensor main body, and is characterized in that the sensor main body comprises a positioning base and a shell,the internal part of the surface of the positioning base is provided with two communicated grooves, each communicated groove is internally provided with an electrode lead, one end of the electrode lead is connected with a lead terminal, the other end of the electrode lead is connected with a gold wire electrode, the gold electrodes are electrically connected with a first silicon diaphragm and a second silicon diaphragm respectively, the second silicon diaphragm is installed at the surface of a silicon cup, the surface of the silicon cup is provided with a radioactive tip, the first silicon diaphragm and the second silicon diaphragm correspond to each other, the internal part of the positioning base is provided with an air inlet passage, the surface of the first silicon diaphragm is provided with an elastic silicon wafer, the air inlet passage discharges the air to the surface of the elastic silicon wafer through a branch pipe, and the top end of the shell is provided with a pressure transmitting piece. The device disclosed by the invention not only can detect the external direct contact pressure, but also can accurately detect small pressure generated by an air flow, thereby beinghigh in practicability and worthy of popularization.

The invention discloses a concrete production detection device based on building, and relates to the technical field of concrete production detection. The concrete production detection device comprises a bottom plate, supporting rods are fixedly connected to both sides of the top of the bottom plate, and one side of a rotation speed sensor is fixedly connected with the surface of a detection box through a fixing block. According to the concrete production detection device, the supporting rods are fixedly connected to both sides of the top of the bottom plate, so that whether the mixing degreeof the concrete reaches the standard can be conveniently and quickly detected, people can immediately know whether the mixing degree reaches the standard when the concrete is produced, the concrete does not solidify due to waiting for detection, the concrete does not need to be stirred all the time for avoiding solidification, and thus the working fatigue degree is reduced, the production cost isreduced, and the problem that the existing concrete production detection device based on building cannot conveniently and quickly detect whether the mixing degree of the concrete reaches the standardis solved.

The invention discloses a system and process for producing high-viscosity chlorinated paraffin. Heavy liquid paraffin and high-quality wax enter a multistage chlorination device sequentially through a settling tank and a raw material kettle; a chlorine gas device introduces chlorine gas to the multistage chlorination device; chlorinated paraffin prepared by the multistage chlorination device enters a finished product refining device; the finished product refining device is provided with an inert gas blowing device; tail gas generated by the multistage chlorination device enters a demister sequentially through a separation device, the raw material kettle and a multistage cryogenic device; the multistage chlorination device comprises a plurality of chlorination reactors connected in series; an ultraviolet lamp is arranged in each chlorination reactor; and the multistage cryogenic device comprises a plurality of coolers connected in series. The system and process disclosed by the invention can avoid hidden dangers caused by the original technology to production and safety.

The invention discloses a core-drilling sampling auxiliary device for exterior wall thickness detection. The auxiliary device comprises a dust cover, wherein the dust cover is installed on a drillingmachine, a hollow drill is installed at the center of the drilling machine, a longitudinal sliding slot is formed in the outer wall of the dust cover, a sliding plate is arranged in the sliding slot,a spring is arranged between the top end of the sliding plate and the sliding slot, a pressing plate is arranged at the lower end of the sliding plate, a perpendicular angle is formed between the pressing plate and the sliding plate, a micro beam lamp and an inductor are arranged on the perpendicular angle, a controller and a power source are arranged at the upper end of the dust cover, a single-chip microcomputer or a PLC control system is arranged in the controller, the controller is connected with the inductor, and an alarm is arranged in the controller. The auxiliary device is installed onthe existing drilling machine, the sliding plate and the pressing plate form an L-shaped right-angle frame to guarantee the perpendicularity between the circumference of the dust cover and a wall space, therefore, perpendicularity between a drill bit and the wall space is guaranteed, an accurate core sample is drilled, and a detection structure is more accurate.

The novel pulse diagnosis instrument comprises an instrument body, a pulse condition sensing probe, a sliding block, a processor and a terminal, a switch is arranged at the upper end of the instrument body, a placement area is arranged on one side of the instrument body, the pulse condition sensing probe is arranged over the placement area, and the processor is arranged in the instrument body. By means of the design of the placing area, the comfort degree is higher during diagnosis, pulse condition detection is conducted through the pulse condition sensing probe, the length of the pulse condition sensing probe can be adjusted through the combination of the ultrasonic distance sensor, the pressure sensor, the processor and the telescopic column, and the pulse condition sensing probe can better meet the pressure capable of being borne by the human body; the pulse condition is acquired through the acquisition module, the data is preliminarily analyzed through the data analysis module, and the data is secondarily diagnosed through the data diagnosis module, so that the detection structure is more accurate, the use is convenient, the safety coefficient is high, the detection is more accurate, and the use experience of a user is further optimized.

The invention discloses an on-site detection method for the content of heavy metal elements in an aquatic product, which comprises the following steps: cleaning the aquatic product to be detected, taking edible parts, and performing grinding; weighing a certain amount of aquatic products to be detected, the aquatic product freeze-dried powder blank sample and the aquatic product freeze-dried powder standard sample, and respectively adding dilute acid for extraction; centrifuging the leach liquor, and taking supernatant liquor; and adding an electrolyte into the extract liquid to respectively obtain an aquatic product to-be-detected liquid, a blank sample to-be-detected liquid and a standard sample to-be-detected liquid, calibrating the electrochemical workstation by using the blank sample to-be-detected liquid and the standard sample to-be-detected liquid, and then analyzing the aquatic product to-be-detected liquid by using the calibrated electrochemical workstation to obtain a detection result of the heavy metal elements in the to-be-detected sample. The detection work of the heavy metal elements in the aquatic products can be completed on the inspection site, and meanwhile pollution data of the heavy metal elements in the aquatic products can be rapidly and accurately obtained.

The invention provides a stator installation device, the stator installation device comprises an embedding device and a finished product cooling device, the embedding device comprises a lifting assembly, a casing heating assembly, a turntable assembly, a height detection assembly and a stator embedding assembly, and the finished product cooling device comprises a circulation line assembly, an air cooling assembly and a material taking and placing assembly. The turntable assembly is used for placing a stator and a casing, the lifting assembly is used for driving the casing heating assembly to move up and down, the casing heating assembly is used for heating the casing on the turntable assembly, and the stator embedding assembly is used for embedding the stator on a turntable into the casing to form a finished product. The height detection assembly is used for detecting whether the height of a stator in a finished product is within a preset range or not, the material taking and placing assembly is used for placing an OK product passing through the height detection assembly into the circulation line assembly, and the air cooling assembly is used for cooling the OK product on the circulation line assembly.