55results about How to "Fast and accurate detection" patented technology

The invention provides a vacuum assistance system detection method, a vacuum assistance system detection system, an electromobile and a failure detection method. The vacuum assistance system detection method includes the following steps: judging whether a pressure sensor fails or not; after the pressure sensor is guaranteed to be not in a failure, further diagnosing whether a vacuum pump is noneffective or not or whether a vacuum assistance system is in air leakage or not according to accurate measuring signals output by the pressure sensor. By the vacuum assistance system detection method, the vacuum assistance system can be detected accurately and comprehensively, and once the vacuum assistance system fails, failure positions can be quickly judged, so that reliability of the vacuum assistance system is effectively improved and driving safety of the electromobile is guaranteed.

The present invention discloses a crane remote monitoring and intelligent maintenance system based on an IOT and a DSP. The system is formed by the connection of a sensor group, an industrial wireless network, a test and control servers, a remote data service center, and an information receiving terminal device in order. The design and project amount can be greatly reduced, the installation cost is reduced, the DSP has the characteristics of fast computing speed, multiple data channels and high floating point operating precision, and the characteristics are very suitable for an industrial control system to carry out accurate detection and positioning.

The invention discloses steel ball surface defect detection sorting equipment. The steel ball surface defect detection sorting equipment comprises a steel ball size screening device, a steel ball surface cleaning device, a steel ball surface unfolding device, a camera, a sorting device and a control module, wherein the steel ball size screening device comprises two parallel rolling shafts; the steel ball surface cleaning device comprises a trapezoid rotary table and a rotary sleeve covering the rotary table; the steel ball surface unfolding device comprises at least two rolling bars, wherein a containing groove is formed between two adjacent rolling bars, and at least one rotatable rolling bar in the two adjacent rolling bars can be used for driving steel balls to roll in the containing groove in synchronism with the rolling bars. The equipment disclosed by the invention can screen out the out-of-size steel balls and can clean the surfaces of the steel balls so as to prevent the false detection caused by blots on the surfaces of the steel balls; in combination with the specific steel ball surface unfolding device, the steel ball surface defect detection storing equipment can rapidly and accurately sort the steel ball sizes and the steel ball surface defects, and the steel ball sorting efficiency is greatly promoted.

The invention relates to the coordinate error adjustment device and method in the jointing of surface default testing image. It joints the image of hundreds of caliber image using digital image treatment. It proposes the way of determination of the maximum angular tolerance alpha max, based on the tested caliber component dimension, viewing filed size and caliber number NXN aiming at the whole caliber jointing error, CCD coordinate and scanning track coordinate included angle alpha .It designs the angular adjustment structure to realize the consistence adjustment of the CCD coordinate system and the scanned track coordinate system. It uses the standard mark line standard plate, XY scanning system and special image processing software combination to realize the specific adjustment method with the included angle of two coordinates less than alpha max, ensures the right joint caliber to achieve the default degree and position accuracy.

The invention provides an electromagnetic radiation detection device and method for potential fire danger of a mine and belongs to a fire detection device and method. According to the electromagnetic radiation detection device and method, electromagnetic radiation signals generated in the temperature rising or burning process of a coal body are detected and analyzed, and then the potential fire danger of the mine is detected. The detection device comprises a perpendicular directionally receiving antenna set and a monitoring host. The detection method includes the steps that the effective receiving direction of the perpendicular directionally receiving antenna set faces a detection area, the value and the main direction of electromagnetic radiation are measured and calculated; a crossed position of main directions of different measuring points is a potential fire danger area; it is judged that fire danger exists in the area according to the average value of electromagnetic radiation indexes in the potential danger area or a dynamic change trend of the electromagnetic radiation indexes in multiple measurements in a critical value mode and a dynamic change trend mode when the electromagnetic radiation indexes or the dynamic change trend exceeds a corresponding critical value. Through the electromagnetic radiation detection device and method, potential fire risks and the potential fire danger area can be detected in time and space; the electromagnetic radiation detection device and method have the advantages of being efficient, fast and convenient.

The present invention relates to the field of image identification and segmentation technology, especially to a drawing object identification and extraction method in a complex scene. The method comprises the following steps of: the step 1: constructing a detection and identification model, and employing an image set with object frames and object type marks to train the model; the step 2: collecting a scene image comprising user drawing content; the step 3: employing the trained detection and identification model to locate a drawing area in the image, and identifying a drawing object; and thestep 4: selecting the drawing area, and employing an image segmentation technology to extract a drawing object contour area. The drawing object identification and extraction method in a complex scenecan be applied in the field of children drawing teaching, can increase intelligent interactivity of the drawing process and can improve the drawing experience.

An input voltage sensing circuit comprising a circuit input terminal; a comparator having first and second input terminals, the first of said input terminals being coupled to a reference voltage; a switch circuit provided between the circuit input terminal and the second of the input terminals of the comparator, the switch being provided to protect the comparator from voltages exceeding a predetermined voltage at which the switch turns off; and an electrostatic discharge circuit coupled to the circuit input terminal for discharging electrostatic induced voltages exceeding a predetermined value.

A vehicle wheel (1) comprising a wheel rim (2), a brake pot (3) fastened thereto and a brake disk (34) fastened to the brake pot, wherein on the wheel rim there are provided a plurality of pivotably mounted, preferably plate-shaped covering elements (5) for temporarily closing off associated apertures (4) in the wheel rim, which covering elements can be moved from a closed position into an open position by means of at least one thermally controlled setting element (6), wherein the setting element (6) is an expansion material working element (7) which is thermally coupled to the brake disk (34) so as to permit a transfer of heat from the brake disk (34) to the expansion material working element (7).

The inspection device of the gear-driven balancer of the present invention includes a driving mechanism (160) that rotates the crankshaft (3); an meshing adjustment mechanism (126) that adjusts the meshing between the balance gear (17) and the crankshaft gear (4). The adjustment mechanism (126) can be adjusted selectively in the driven direction and the anti-driven direction driven by the crank gear (4); the rotation angle detecting device ( 124), (154); detect the axial displacement detecting device (123) that balance shaft (14) moves axially; To above-mentioned driven direction, only adjust balance gear (17) and crankshaft gear (4) with prescribed number of rotations After meshing, switch to the anti-driven direction, and calculate the balance gear (17) and the crankshaft gear (4 ) computing device for backlash. With the present invention, the meshing state of the crankshaft gear and the balance gear can be quickly and accurately detected for the entire tooth surface.

An infrared imaging device based on a network includes an infrared imaging lens, a data processing circuit, an MCU (Microprogrammed Control Unit) and an Internet interface; the infrared imaging lens is used for transforming detected heat into electrical signals, i.e. temperature signals; the data processing circuit is used for transforming the temperature signals into digital signals; and the MCU is used for processing the digital signals, calculating data simultaneously, distinguishing a thermal field in a monitoring zone, storing processed and calculated data, and transmitting the data to the network through the Internet interface. The infrared imaging device adopts the image network transmission technology, transmits real-time thermal field images to a present coal mine backbone network, and realizes remote dynamic monitoring.

The invention relates to an automatic firefighting explosion-prevention system and method for a bus. The automatic firefighting explosion-prevention system is characterized by at least comprising nozzles, a firefighting bottle, a control box and an audible and visual alarm, wherein the firefighting bottle is communicated with a plurality of nozzles through pipelines; the firefighting bottle and the audible and visual alarm are electrically connected with the control box respectively; the control box is electrically connected with a plurality of detectors through internal CAN buses. Due to the adoption of the whole system, monitoring on fire hazard or explosion in a whole carriage can be achieved, a fire extinguishing agent can be sprayed into the whole carriage in all directions, automatic alarm and automatic firefighting bottle driving can be achieved, and the rapid fire fighting and explosion prevention properties of the bus can be effectively improved.

The invention discloses a dynamic response time detection device for an infrared laser methane concentration measuring instrument. The dynamic response time detection device comprises a power module,a standard concentration methane gas chamber, a speed-adjustable motor, a motor control module, a rotating disc, a controller module and a data output module. The power module supplies electricity; the controller module controls the rotating speed of the speed-adjustable motor through the motor control module; measuring laser outputted by the infrared laser methane concentration measuring instrument penetrates a light-permeable portion of the rotating disc to be irradiated to the standard concentration methane gas chamber, and data are uploaded to the controller module after gas concentrationis measured; the controller module outputs received measured data through the data output module; detecting personnel can detect dynamic response time of the infrared laser methane concentration measuring instrument according to detection data. The invention further discloses a method of the dynamic response time detection device for the infrared laser methane concentration measuring instrument. By adoption of the technical scheme, high detection precision, low cost and high reliability are realized.

The invention provides a laser precision galvanometer calibration accuracy detection method and a detection system. The method comprises the following steps: verification material is arranged on the boundary of at least one galvanometer scanning area; the verification material is at least arranged on the boundary in the two mutually-perpendicular directions; a plurality of partially-standard patterns are respectively processed on the verification material by laser, so that the partially-standard patterns are spliced to form at least one standard pattern; whether the integrity of the standard pattern after being spliced reaches a preset value is detected, therefore, the accuracy of a galvanometer can be judged. According to the laser precision galvanometer calibration accuracy detection method and the detection system, the detection and verification process for the calibrated galvanometer is simplified, the detection efficiency is improved, and the calibration accuracy of the galvanometer can be rapidly and accurately detected and verified.

This invention discloses a complementary peptidenucleic acid probe biological chip, wherein the solid-phase holder of the said chip joins with the complementary peptidenucleic acid probe. This invention also relates to the chip checking method basing on the plasma resonance SPR principle, which includes the crossing of the sample and the checking probes; clearing and wiping off the uncrossed samples; making the polarised light checking on each probe cross zone that is on the checking biological chip by using the plasma resonance equipment; using plasma resonance SPR principle to analyze the complementary peptidenucleic acid probe crossing reaction to obtain the result. This invention uses the pcPNAs as the cross probe, compraring to the ordinary DNA probe, it has higher sensitivity and especial charater, which not only avoids PCR reaction, but also delows the sample treatment request, simples the operation steps and shortens the checking time.

The invention discloses an automatic monitoring system for tablet packaging quality, which includes an image acquisition device, a computer, a mechanical control box and a spray gun; medicine plate image; the computer is connected with the image acquisition device, and sends a trigger signal to the mechanical control box when a waste plate not filled with tablets is found; the input end of the mechanical control box is connected with the computer, and the The output end of the mechanical control box is connected to the spray gun, and the mechanical control box controls the spray gun to inject airflow at a predetermined time when receiving the trigger signal to blow the waste boards not filled with tablets into the waste box. The automatic tablet packaging quality monitoring system provided by the invention uses a machine vision system to replace manual detection of tablet packaging defects, which can improve production efficiency and reduce production costs.

The invention discloses a real-time soybean detection instrument. The real-time soybean detection instrument comprises a sample conveying device, an image acquisition device, a triggering device and an image processing device, wherein the triggering device is mounted on the sample conveying device; an image acquisition position and the image processing device are located above the sample conveying device; the image acquisition position is connected with the image processing device and comprises a CCD camera, a light source and a hyper-spectral shooting instrument which are arranged above the sample conveying device and located at the image acquisition position. The real-time soybean detection instrument can quickly and accurately detect soybeans without influencing the quality of the detected soybeans, and can improve the soybean detection efficiency, realize automatic detection and effectively reduce the labor intensity of detection operators; as the CCD camera only shoots the surface information of the soybeans, the data amount is relatively small, the processing speed is relatively high, and accordingly, the soybeans can be quickly and accurately detected; besides, the real-time soybean detection instrument is simple in structure and relatively low in cost.

The invention discloses a dynamic fault detection method for an electro-hydraulic executer energy accumulator. The dynamic fault detection method comprises the following step that field input signalswhen an intelligent electro-hydraulic executing mechanism is in the work state are collected, and the field input signals include pressure sensor signals, displacement sensor signals, temperature sensor signals, liquid level sensors and motor state signals. The dynamic fault detection method has the beneficial effects that rapid and accurate detection and diagnosis can be conducted on all faults of an EHS intelligent electro-hydraulic executing control system, the automatic control system reliability analysis technology, the fault detection technology and the artificial intelligence knowledgereasoning judgment technology can be comprehensively applied to achieve the fault detection and diagnosis technology only owned by few talented persons originally, a user conveniently knows and graspsthe real-time health condition of the whole system running, and accordingly fault enlarging and disastrous events can be prevented.

The invention discloses an electrochemical method for detecting beta-lactam antibiotics. The surface of a glassy carbon electrode is modified by polymethylene blue, New Delhi metal-beta-lactamase-1 (NDM-1 enzyme) and glutaraldehyde. The preparation method comprises: activating bare electrodes; performing electropolymerization of methylene blue; preparing working electrodes; mixing 4 [mu]L of enzyme and 2 [mu]L of 1.0% glutaraldehyde onto the surface of the electrode and drying it; placing the electrode in penicillin sodium and ampicillin solution and deceting by differential pulse voltammetryto obtain linear ranges of 0.001 ng to 10 [mu]g and 0.01 ng to 10 [mu]g, respectively. The detection limits were 0.0057 ng mL-1, 0. 011 ng mL-1. The advantages are high sensitivity, low detection limit, low cost, simple operation, and reusability. The electrochemical method can be applied to the detection of beta-lactam antibiotics, and provide a promising technology for the detection of beta-lactam antibiotics.

The invention discloses a three-phase electric energy meter wiring detector and detection method thereof. The three-phase electric energy meter wiring detector comprises a three-phase electric energymeter body, a to-be-detected end is arranged at the bottom of the three-phase electric energy meter body, and a wiring detector body located at the bottom of the to-be-detected end is arranged at thebottom of the three-phase electric energy meter body; and a handle is fixedly connected to the top of the wiring detector body, anti-falling rubber protruding blocks are fixedly connected to the fourcorners of the front face of the wiring detector body, a control box is fixedly connected to the right side of the top of the wiring detector body, and a single-chip microcomputer is arranged in the control box. The problems that an existing wiring detector is poor in detection adaptability, most wiring detectors need to be completed manually, detection data need to be memorized manually, data statistics errors often occur, the maintenance efficiency is low, lines with problems at a detection end need to be searched for one by one, searching is tedious, and the detection efficiency is reducedare solved. The method has the advantages of high adaptability and automatic data statistics.

The invention discloses a multi-modal data fusion drivable area detection method based on point cloud up-sampling. The method mainly comprises two parts of space point cloud adaptive up-sampling and multi-modal data fusion drivable area detection, and comprises the steps of: registering the camera and the laser radar through a joint calibration algorithm, projecting the point cloud to an image plane to obtain a sparse point cloud graph, calculating edge strength information by using a pixel local window, and adaptively selecting a point cloud up-sampling scheme to obtain a dense point cloud graph; and carrying out feature extraction and cross fusion on the obtained dense point cloud picture and the RGB image to realize rapid detection of a drivable area. The detection method provided by the invention can realize rapid and accurate detection and segmentation of the drivable area.

The invention relates to a piston skirt detecting device, comprising a base. A plurality of laminated adjusting flat plates are mounted on the base; a piston is placed on the adjusting flat plates; one ends of the adjusting flat plates are provided with a limiting post; one end face of the limiting post abuts against the diameter end of a piston skirt; the other ends of the adjusting flat plates are provided with a bracket; the bracket is provided with a horizontal hole and a thread hole vertically communicated with the horizontal hole; a detecting rod of a dial indicator is inserted into the horizontal hole of the bracket, and is fastened through a screw in a screw hole; and an indicator head of the dial indicator abuts against the diameter end of the piston skirt. With the adoption of the piston skirt detecting device provided by the invention, the adjusting flat plates are used as the basic height of the piston, and the limiting post abuts against the diameter end of the piston as the measurement basic face, so that the piston skirt detecting device can conveniently and rapidly measure the diameter of the piston skirt. Therefore, the piston skirt detecting device has the advantages of rapid and accurate measurement, high measurement precision, high working efficiency and wide applicability.

The invention discloses an accurate measurement method for end jump and planeness of a circular saw web. According to the method, the circular saw web is fixed to a horizontal rotary shaft which is connected with a rack of a detection device through a flange clamping mechanism in a centering mode, firstly two displacement detection elements fixed to the rack are adjusted and corrected once, and after circular saw webs with the same specification are clamped once and rotate by one circle, the end jump and the planeness are obtained accurately and rapidly through display values of the two displacement detection elements. By means of the method, on the premise that the high practical operability is guaranteed, the fast and accurate measurement of the end jump and the planeness of the circular saw web is achieved; compared with a currently-adopted normal measurement method which is low in efficiency and poor in accuracy, the method has the remarkable advance and prominent advantages.

The invention discloses a multi-sensor fusion and personnel positioning method based on image processing. The multi-sensor fusion and personnel positioning method comprises the following steps: S1, acquiring a three-channel RGB color image and a one-channel multi-line laser ranging image; S2, projecting camera optical coordinates of the RGB color image into laser point cloud coordinates, and projecting the laser point cloud coordinates into 360-degree annular panoramic coordinates; S3, performing target detection frame selection on a pre-trained target by using a deep learning image recognition technology to obtain a target detection bounding box distribution image and an object category distribution image; S4, searching a laser point cloud coordinate of a central point of the target detection frame as a laser ranging value of the target; S5, calculating a monocular distance measurement value of the camera through the target detection frame; and S6, carrying out Kalman filtering on thelaser ranging value and the monocular distance measurement value, and obtaining the final target distance value. The multi-sensor fusion and personnel positioning method is simple, high in real-timeperformance and capable of rapidly and accurately achieving transformer substation personnel positioning.

The invention provides a microgrid protection control system, method and device and a storage medium. The system comprises a first detection device, a second detection device, a calculation module, a judgment module and a control module, wherein the first detection device is arranged at a large power grid side and is used for detecting a first voltage and a first current of the large power grid side; the second detection device is arranged at the micro-grid side and is used for detecting a second voltage and a second current of the micro-grid side; the calculation module is used for obtaining a voltage parameter and/or a current parameter; the judgment module is used for judging whether the voltage parameter and/or the current parameter exceed a threshold value; and the control module is used for controlling the on-off state of a public grid-connected point according to the judgment structure of the judgment module. According to the system, the detection devices are arranged at the two sides of the public grid-connected point, and the states at the large power grid side and the micro power grid side are monitored respectively, so that the fault detection and positioning are rapidly and accurately carried out, the key devices in a direct current micro power grid are protected, and it is ensured that other parts in the system can still operate safely and reliably.

The invention relates to a specific primer, kit and method for qualitatively and/or quantitatively detecting lactobacillus rhamnosus, and belongs to the technical field of genetic engineering. The specific primer comprises an upstream primer M9F and a downstream primer M9R; the sequence of the upstream primer M9F is shown in SEQ ID NO. 1; the sequence of the downstream primer M9R is shown in SEQ ID NO. 2. The specific primer can be used for quickly, accurately, qualitatively and quantitatively detecting the lactobacillus rhamnosus M9, and has the advantages of good specificity, high sensitivity, good stability and good repeatability.

The invention relates to a method for accurately detecting the position of a low-speed small unmanned aerial vehicle through radar photoelectric cooperation, and the method comprises the steps: enabling one radar and a plurality of photoelectric equipment to be installed at a commanding height of a monitoring region in an array layout mode, building a cooperative detection space rectangular coordinate system through taking the center of an array as an original point, and preliminarily detecting the position of the unmanned aerial vehicle through the radar, according to the target position information detected by the radar, adjusting the observation direction and angle of the corresponding photoelectric equipment so that the staring field is located near the target, then carrying out scanning search, and capturing the target; after the target is captured, tracking the target, locking the target to the center of a field of view, and calculating the position of the target in a cooperativedetection space rectangular coordinate system according to the distance, the direction angle and the pitch angle between the target and the photoelectric equipment. According to the scheme, the technical problem of low positioning precision of the unmanned aerial vehicle due to the complexity of an urban environment, the particularity of a low-altitude low-speed small target and the performance limitation of independent radar or photoelectric equipment in the prior art is solved.

The invention relates to SRAM chip fault detection, aims to solve the problem that in the prior art, an SRAM chip address pin line short-circuit fault cannot be quickly and precisely detected and positioned, and provides an SRAM chip address pin line short-circuit detection method. The method comprises the steps that according to arrangement characteristics of chip address pins, and a to-be-detected pin group which possibly has a short circuit among the address pins is listed; an initial address of an SRAM chip is obtained, and all relevant addresses corresponding to the to-be-detected pin group are determined; verification data different from data in the initial address is written into all the relevant addresses in sequence; the data in the initial address before the verification data iswritten and the data in the initial address after the verification data is written are compared; and if the data in the initial address is changed, it is determined that a short-circuit fault occurs among the pins at the corresponding relevant addresses in the to-be-detected pin group. Through the method, whether address pin lines have a short circuit can be detected, detection is high in speed and precise, and the detection efficiency of an SRAM is improved.

The invention provides a fluorescence quantitative RT-PCR detecting reagent for a wheat streak mosaic and a preparation method and applications thereof; the fluorescence quantitative RT-PCR detecting reagent for the wheat streak mosaic is finely designed and composed by taking the specific and more conservative CP coding gene section between each strain of the wheat streak mosaic as a target sequence; the fluorescence quantitative RT-PCR detecting reagent for the wheat streak mosaic comprises a pair of specific primers and a specific fluorescence probe; the length of a target augmentation section is 63bp; the sequences of the primers and the probe are as follows: the primer WSMV TF is 5'- agctatttgcacaggcacga-3'; the primer WSMV TR is 5'- ctgcatcatgacgtgagttgtc-3' and the probe is 5'- FAM-tgagtgcgggtactaatga-MGB-3'. The invention overcomes the defects of time waste, easy pollution and needing electrophoresis detection after augmentation of the normal RT-PCR, can carry out quick and accurate qualitative and quantitative detection on the WSMV in samples and has the advantages of simple and easy operation, intuitionistic result, high sensibility, good repetitiveness, and the like.

The invention discloses a tire X-ray defect detection method based on texture comparison. The method comprises the following steps: firstly, obtaining a tire X-ray image; obtaining a gradient binary image of the tire X-ray image by using an edge detection algorithm; obtaining a y coordinate of the cord thread in the obtained gradient binary image; calculating to obtain a sparsest position and a densest position of cord coordinates; obtaining and comparing the y coordinate difference value of the sparsest a cords and the y coordinate difference value of the densest b cords, if the y coordinatedifference value of the b cords at the densest position of the cords is smaller than the y coordinate difference value of the a cords at the sparsest position of the cords, judging that the tire has the thin tire defect, and otherwise, judging that the tire has no thin tire defect. According to the method, low efficiency caused by human factors can be avoided, and the problem of misjudgment is solved to a certain extent, so that the safety of the tire is greatly improved, and the pressure of quality control personnel can be reduced.