269results about How to "Avoid detection impact" patented technology

The invention discloses a three-dimensional welding line automatic recognition device and method. A conveyor belt sends a workpiece to be welded to the projection range at a constant speed, a photoelectric sensor is triggered, an industrial personal computer controls a motor to stop operation, a projector projects a light pattern, an industrial camera performs image acquisition, a surface model ofthe welding line three-dimensional information is obtained by the three-dimensional reconstruction through phase-measuring profilometry and exported to a industrial control computer for processing, three-dimensional coordinate information of the welding line to be welded is processed and obtained and sent to a welding robot, the workpiece to be welded reaches the designated position, the industrial personal computer controls the motor to stop operation, and the robot performs welding. The three-dimensional welding line automatic recognition device and method avoids the impact of strong arc light, high-temperature radiation, electromagnetic interference and smoke spatter which are generated by a traditional line structure light welding robot during welding on the detection of welding lineposition information by means of scanning first and welding afterwards. The precision of welding is improved, the cost of manual welding is reduced, and the efficiency of assembly line welding is greatly improved.

The invention discloses a movable water quality detection device. The device comprises a casing, wherein an anti-blocking device is fixedly connected with the lower end of a water pumping pipe; a motor is fixedly connected with the top end of the inner wall of a protective casing; a rotating shaft is rotationally connected with the lower end of the motor; a brush is fixedly connected with the lower end of the rotating shaft; a support table is arranged on the right side of the bottom end in a cavity of the casing; a detection box is fixedly connected with the left end of the upper surface of the support table; a light-emitting component is fixedly connected with the lower end of the left side of the outer wall of the detection box; an illuminance detection instrument is arranged in the position, corresponding to the light-emitting component, of the lower end of the right side of the outer wall of the detection box; a residual chlorine reagent box is arranged on the right side of the outer wall of the detection box; a treatment box is communicated with the lower end of the detection box through a drain pipe; a push rod is fixedly connected with the right side of the outer wall of the casing. The invention relates to the technical field of water quality detection devices. The movable water quality detection device is movable and anti-blocking, has high detection accuracy and realizes automatic sewage treatment, and maintenance cost is reduced.

The invention discloses an intelligent monitoring method and system for highway road. The system comprises an acquisition end, a server end and a client which are sequentially connected. The method comprises the steps of simultaneously receiving high-definition video data or infrared video data in two directions of the road by the acquisition end, performing data pre-processing on the high-definition video data or the infrared video data, and extracting a video frame to obtain picture data; inputting the picture data to a deep convolutional neural network which is trained already for detectionto obtain a vehicle detection result, a lane line detection result and an environmental visibility detection result; analyzing an abnormal traffic state according to the vehicle detection result andthe lane line detection result to obtain a grading early-warning result or a warning result for displaying, and performing real-time active early warning or warning on the vehicle, wherein the abnormal traffic state comprises vehicle violation, a fault and an accident; and obtaining and displaying a grading guidance result according to the environmental visibility detection result, and performingreal-time active guidance on the vehicle.

The invention discloses a long-path optical fiber-microfluidic chip sensor for detecting absorbance and refraction index, which comprises a microfluidic chip made of a transparent material. A detection passage, an incident optical fiber passage and an emergent optical fiber passage are arranged in the microfluidic chip. The detection passage is provided with a sample inlet, a sample outlet, a light incidence port and a light emergence port. The detection passage is arranged between the incident optical fiber passage and the emergent optical fiber passage. The detection passage, the incident optical fiber passage and the emergent optical fiber passage are mutually isolated. Emergent light from the incident optical fiber passage is absorbed by a sample in the detection passage, is reflected by the inner wall surface of a side wall and then shoots into the emergent optical fiber passage. The incident optical fiber passage and the emergent optical fiber passage are respectively matched with optical fibers which are arranged in the incident optical fiber passage and the emergent optical fiber passage. The end surface of the emergent ends of the optical fibers in the incident optical fiber passage and the end surface of the light emergence port of the incident optical fiber passage are on the same level. The end surface of the emergent ends of the optical fibers in the emergent optical fiber passage and the end surface of the light incidence port of the emergent optical fiber passage are at the same level. The long-path optical fiber-microfluidic chip sensor for detecting absorbance and refraction index can realize high-sensitivity biochemical sensing at low sample consumption.

The invention relates to a caution system for reducing traffic accidents when pedestrians cross at zebra crossing, and belongs to the field of road safety systems. The caution system comprises a traffic signal light, a controller, a loudspeaker, a pressure sensing module, a water spraying caution module, a power module and a solar panel, wherein the traffic signal light is controlled by the controller; the controller is connected with the loudspeaker; the controller sends out a signal to control the loudspeaker; and the loudspeaker is mounted on a pillar of the traffic signal light. A solar panel is an auxiliary power supply of the system, the pressure sensing module transmits a detected pressure signal to the controller, the water spraying caution module is controlled by the controller, and the power module is a main power supply of the system. The caution system has the beneficial effects that the signal of a pedestrian who runs the red light is detected by the pressure sensing module, then the pedestrian is warned and stopped safely, and the circumstance that the pedestrians run the red light when crossing at the zebra crossing is stopped effectively.

The invention discloses an intelligent water conservancy river monitoring control collector which comprises a floating plate. A first motor is fixedly connected on the bottom of the floating plate through bolts; and one end of the first motor is rotationally connected with a paddle through a rotating shaft, an electric control box is fixedly connected at the center of the top of the floating platethrough bolts, a winding wheel support is fixedly connected on the bottom of the interior of the electric control box through bolts, and a second motor is fixedly connected on the outer wall of one side of the winding wheel support through bolts. According to the intelligent water conservancy river monitoring control collector, a plurality of sample storage pipes are arranged on the turntable inthe lifting cylinder, the collected water sample can be stored and thus water samples at different positions and different depths can be collected in one round trip process, the collection efficiencyof the collector is improved, the accident rate of the collector is reduced, the service life of the collector is prolonged, the water samples are collected and discharged through the lifting type piston plate, and the movable detection head is matched to detect the water samples.

The invention relates to a wide-angle camera module smudginess test method, and aims at solving the problem that the wide-angle camera module smudginess test is difficult in the prior art. The methodcomprises the following steps of: shooting a template by using a camera; distinguishing a normal part and a dark part of a shot image, and extracting lens imaging boundary position information; carrying out median filtration and binarization on the shot image to obtain an image with smudginess points; and finding the smudginess points from the image with the smudginess points in a lens imaging boundary range so as to calculate a smudginess coordinate. According to the method, smudginess in imaging ranges of wide-angle camera modules can be effectively detected, so that detection influences, onsmudginess, of relatively dark parts around the lenses can be effectively prevented.

The invention discloses an image detection method for 'black hole effect' at a tunnel entrance. The method is characterized in that visual feature information including gray level, gradient and specific value of interior and exterior of a tunnel are acquired through image analysis, and whether a highway tunnel entrance has the 'black hole effect' or severity of the 'black hole effect' is judged according to the visual feature information.

The invention provides a formaldehyde detection device and method. The formaldehyde detection device comprises a formaldehyde absorption module, a formaldehyde separating and sampling module and a detection module, wherein the formaldehyde absorption module comprises a first pipe body, a liquid feeding pipe and a first water absorption type filling body; the formaldehyde separating and sampling module comprises a second pipe body, a guiding-in pipe and a second water absorption type filling body; the detection module comprises a shading shell, a reaction bed and a photoelectric sensor. According to the formaldehyde detection device, the sensitivity of the formaldehyde detection device is improved and the corresponding speed of the formaldehyde detection device is increased, so that the formaldehyde detection precision and efficiency are improved.

The invention relates to a preparation method and application method of a phthalates molecular imprinted magnetic material through dual-virtual template. The preparation method comprises the followingsteps of preparing graphene oxide by a modified Hummer method; loading Fe3O4 granules to the surfaces; adding cetyl trimithyl ammonium bromide and tetraethylorthosilicate to obtain a magnetic graphene oxide-Meso-PS compound; using the compound as a carrier, using dipropyl phthalate and diisononyl phthalate as a virtual template, using Phenyltrimethoxysilane and 3-aminopropyl triethoxy silane as functional monomers, using tetraethylorthosilicate as a cross-linking agent, performing vibrating for stirring at room temperature, and performing sol-gel surface molecular imprinting; and eluting template molecules with a mixed solution of methyl alcohol and acetic acid, performing magnetic separation, and then performing vacuum drying to obtain the phthalates molecular imprinted magnetic materialthrough dual-virtual template. The material has favorable adsorptive selectivity on 6 priority-controlled phthalates, can be quickly separated from aqueous phases, is short in balance time and high in adsorbing capacity, can be reused for 6 times, can realize selective removal and enrichment of various PAEs in water, and has high practical application value.

The invention is applicable to the gene engineering field, and provides a detection method of a chromosome synteny homology region and a system thereof. The method comprises the following steps: positioning all reference genes in a reference genome to a target genome to form a gene copy seat; copying and clustering lapped genes according to the gene copy seat to form a fuzzy site gene representative seat; and detecting the synteny homology region of the chromosome by a dynamic planning fuzzy site locating algorithm according to the fuzzy site representative gene seat. The detection method of the chromosome synteny homology region provided by the embodiment of the invention can help detect the chromosome synteny homology region automatically with high sensitivity and low complexity, and avoids influence of objective factors on detection of chromosome synteny homology region in visual examination.

The invention discloses a storage battery with an intelligent management function, and relates to the field of automobile storage battery design. The storage battery comprises a storage battery body as well as a detection unit, an executor and an intelligent module unit which are arranged on the storage batter body, wherein the detection unit is used for automatically detecting a state of the storage battery; the executor is used for adjusting the state of the storage battery; and the intelligent module unit is used for processing feedback information of the detection unit of the storage battery and controlling the executor based on an information processing result so as to correct the state of the storage battery. Therefore, the storage battery is more intelligently maintained; the performance of the storage battery is improved; the service life of the storage battery is prolonged; and the negative influence on a vehicle due to a storage battery fault is effectively prevented.

The invention discloses a commodity falling detection method of an automatic vending machine based on double cameras. The method comprises detection steps that (1) when a facility detects that a usercompletes payment, a holder rises to a layer where a commodity is positioned and is stopped, and the cameras at the two sides of the holder are started for snapshot; (2) a local processing module of the facility is started to process each snapshot image cutting the snapshot image according to a pre-determined monochrome chequer position of a side plate of the holder, removing irrelevant areas, graying the cut image, carrying out edge detection on the grayed image via a sobel edge detection operator to generate an edge image, and storing the edge image as a background image; (3) after that thebackground is shot, a commodity channel conveyor belt is started, and the cameras at the two sides of the holder are started to shoot the state of the holder; and (4) the conveyor belt is stopped andthe cameras are switched off. The method can be used to detect small, flat and transparent commodities, and influence of the ambient light on commodity detection can be avoided effectively.

The invention belongs to the technical field of integrated circuit detection, and particularly relates to an integrated circuit pin three-dimensional detection system and a detection technology. The integrated circuit pin three-dimensional detection system comprises a workbench, the top of the workbench is provided with a circular groove, the top of the circular groove is slidably connected with a cylinder, the cylinder is internally provided with a pentagonal groove, a rotating disc is fixedly connected to the top of the cylinder, and a rotating assembly used for enabling the rotating disc to intermittently rotate by 45 degrees is arranged in the workbench. The system is simple in structure, the chip can be clamped by pressing the chip into the clamping box, clamping of the chip can be relieved by rotating a rotating rod, the chip can be conveniently taken out, when the arc-shaped gear rotates by one circle, the first gear can be driven to rotate by 45 degrees, a chip can be accurately conveyed to the position under the CCD camera, the chip can be accurately detected through the CCD camera, manual operation is not needed in the detection process, the detection efficiency is improved, and the labor intensity of workers is reduced.

The invention provides an image awakening method, an electronic device and a storage medium. According to the embodiment of the invention, the screen turn-off mode is switched into the bright screen display mode or the off screen display mode in which the preset icon is displayed according to the detection conditions of the first wake-up event and the second wake-up event in the screen turn-off mode, so that the preset icon in the screen turn-off mode can be quickly waken up, and a user can conveniently perform corresponding operation through the icon. The user can conveniently select a brightscreen display mode in which the screen is completely lightened or a dark screen display mode in which the screen is locally lightened according to the current demand. Meanwhile, the screen burning phenomenon caused by the fact that the AOD mode is used for replacing the screen turn-off mode all the time when the equipment is not used and the fingerprint icon needs to be kept to be displayed at the fixed position in the related technology is avoided, and the service life of related hardware can be prolonged. The AOD mode does not need to be kept all the time, and energy consumption can be better reduced.

The invention discloses a method for detecting durability of an overflow brick. The detection method comprises the following steps of: horizontally placing a rectangular to-be-detected overflow brick into a high temperature resistant container in a manner of being vertical to the height direction, respectively placing two lengthwise ends of the to-be-detected overflow brick onto two supporting bases, so as to ensure that creep spaces are formed at the lower surface of the to-be-detected overflow brick and the bottom of the high temperature resistant container; performing high-temperature erosion treatment on the to-be-detected overflow brick in a vitreous humor so as to enable the overflow brick to creep downwards in the height direction, thereby obtaining the creep overflow brick; calculating the high temperature creep rate sigma of the overflow brick by use of a formula I, wherein the formula I is as shown in the description; the lower the high temperature creep rate sigma is, the better the durability of the to-be-detected overflow brick is. The detection method disclosed by the invention is capable of detecting the high temperature creep rate of the overflow brick so as to detect the durability of the overflow brick.

The invention provides a device making a diffusion type nitrogen-hydrogen leak detector be not affected by environmental background. The device comprises a switching valve, an air storage tank, an air inlet valve, a cover box and the diffusion type nitrogen-hydrogen leak detector. The switching valve, the air storage tank, the air inlet valve, the cover box and the diffusion type nitrogen-hydrogen leak detector are sequentially connected in series through air channels. Part of a detected object or the whole detected object is located in the cover box, the cover box is further connected with an air release valve, and a pressure controller is connected between the switching valve and the air storage tank. The device is used for helping leak detection of the diffusion type nitrogen-hydrogen leak detector, detection is not affected by the environmental background, stability, correctness and accuracy of the diffusion type nitrogen-hydrogen leak detector are improved, the defects of an existing diffusion type nitrogen-hydrogen leak detector are overcome, and the limiting requirements of the diffusion type nitrogen-hydrogen leak detector for the user site environmental background are reduced.

The invention relates to an automatic ultrasonic flaw detection device for safety detection. The device comprises a base, a top plate, a controller, a detection mechanism, two fixing mechanisms and two supporting columns, wherein the fixing mechanism comprises a telescopic assembly, a telescopic plate, an adjusting assembly and two air cylinders, the adjusting assembly comprises a first motor andtwo adjusting units, the detection mechanism comprises a lifting plate, a lifting assembly, a translation assembly, a translation plate, a probe and a connecting assembly, and the connecting assemblycomprises a connecting plate, a first spring, a pressure sensor and two sliding units. The automatic ultrasonic flaw detection device for safety detection is advantaged in that a workpiece can be conveniently clamped and fixed through the fixing mechanisms, in addition, the detection mechanism is utilized to enable the probe to lean against a surface of the workpiece for moving detection, moreover, probe abrasion caused by too large contact acting force between the probe and the workpiece is avoided, so efficient automatic safety detection is realized, and practicability of the equipment is improved.

The invention relates to a lens defect detection device, comprising a camera, a lens, a display screen, a ring light source, a transparent flat plate, an electric displacement platform, an electric lifting platform and an electric slide rail, wherein the camera is connected with the lens and is fixed to the electric displacement platform and can move up and down with the electric displacement platform to adjust the size of a view field of the camera, and the camera is fixed directly below the lens for assisting multi-angle lighting to shoot a tested lens; the transparent flat plate is fixedlyconnected to the electric slide rail and is used for placing the tested lens, and the electric slide rail carries the transparent flat plate to move so as to come in and get out from the detection device; and the display screen is fixed on the electric lifting platform for projecting black and white stripes, is placed below the transparent flat plate, and is driven by the electric lifting platformto move up and down to project onto the tested lens.

The invention provides a retroreflector image detection method and a retroreflector image detection system capable of resisting environmental illumination interference. The method comprises the following steps: step 1, irradiating a to-be-detected area along an angle N through a cooperative light source; conducting amplitude modulation on the radiation power of the cooperative light source throughthe modulation signal output by the modulation unit, wherein the radiation power of the cooperative light source changes along with time; the time when the radiation power of the cooperative light source reaches the peak power Pp is the peak time tp, and the time when the radiation power of the cooperative light source reaches the valley power Pv is the valley time tv; Step 2, respectively acquiring a bright gray level image and a dark gray level image of the to-be-detected area from the angle N at tp and tv moments through a visual unit; the modulation unit is in communication connection with the visual unit; and step 3, processing and analyzing the bright gray level image and the dark gray level image by using a visual unit, and detecting the retroreflector in the to-be-detected area. According to the detection method and system, the retroreflector image detection accuracy can be ensured under the condition of environmental illumination interference.

The invention discloses a bolt looseness detection device based on visual monitoring. The bolt looseness detection device comprises an equipment shell, a power supply for providing power for equipment, a moving unit and an obstacle avoidance unit, the moving unit moves the equipment, and the obstacle avoidance device performs active avoidance movement when the equipment moves and encounters an obstacle; and the data acquisition module is mounted on the equipment shell and is used for identifying the anti-loosening wire on the head of the bolt or the nut. According to the technical scheme of the invention, 1, the influence of space limitation on detection is avoided; 2, the labor and time are saved, and convenience and rapidness are achieved; 3, the device is portable and mobile and adapts to various working conditions. 4, intelligent detection is achieved, rapidness and high efficiency are achieved, and errors caused by manual detection are avoided. and 5, automatic data storage, classified management, later maintenance construction and historical data query are relatively convenient.

The invention discloses a test tool for measuring the height between the center of a synchronizer and the junction surface of a shell of a gearbox. The test tool comprises a base, wherein the bottom surface of the base is adhered to the junction surface of the shell, a central spindle is arranged on the base, is axially provided with a detection plate in a sliding manner and passes through a mounting hole formed in a detection plate, and the measuring end of the detection plate is inserted into a synchronizer slot in the process of measuring. Therefore, the test tool can simply and quickly measure the height between the center of the synchronizer and the junction surface of the shell of the gearbox, so that the efficiency and reliability of the height measuring can be improved.

The invention discloses a thermocouple temperature sensor with a fast response speed, comprising a protective casing (1), wherein electrodes (2) which are disposed in parallel and an insulated filling material (3) are disposed in the protective casing (1); a packaging layer (4) is disposed at the front end of the protective casing (1); and the electrodes (2) penetrate through the packaging layer (4), and the combination point of the electrodes (2) is arranged outside the packaging layer (4). The influence on detection due to the heat dissipation of the packaging layer is avoided; the high temperature generated during vaporization for some substance in a detected object can be directly monitored; response speed is fast, and the time point of the occurrence of vaporization is captured instantaneously, thus determining the temperature (i.e., vaporization temperature) of the detected object at the time of the occurrence of vaporization; and detection accuracy is obviously improved by determining the vaporized substance via vaporization temperature.

The invention discloses a fatigue driving monitoring method based on blink detection, and the method comprises the steps: 1, image collection: uploading a face image collected at each sampling moment to an image processor synchronously; 2, image processing: enabling the image processor to carry out the analysis processing of the face images received in each analysis processing period, wherein the analysis processing process comprises the following steps: 201, carrying out the analysis processing of the face images collected in the first analysis processing period; 202, carrying out the analysis processing of the face images collected in the next analysis processing period; 203, repeatedly carrying out the step 202 for M-3 times; 204, carrying out the analysis processing of the face images collected in the next analysis processing period and carrying out the fatigue driving judgment; 205, returning to step 204. The method is simple in step, is reasonable in design, is convenient to implement, is good in use effect, can carry out the accurate monitoring of the fatigue driving state of a driver conveniently and quickly based on the blink detection of a driver face image, and is high in practical value.

The invention relates to the technical field of computer vision, and discloses a binocular stereoscopic vision based head detecting and counting method which solves a problem that a head detecting and counting scheme in the traditional technology is high in calculation amount, inaccurate in counting and low in accuracy. The method disclosed by the invention comprises the steps of a, calibrating a binocular image acquisition system; b, performing monitoring region image acquisition by using the calibrated binocular image acquisition system, and acquiring a passenger flow scene image; c, performing preprocessing on the acquired passenger flow scene image; d, acquiring a depth image of the image; e, detecting heads with different depths in the depth image by using a contour line searching method; f, tracking the detected heads; g, detecting new heads in a new video frame, and updating the number of heads; and h, outputting the current number of heads. The method disclosed by the invention is applicable to head detecting and counting for passenger flow scenes.

The invention belongs to the technical field of spectrophotometry, and particularly relates to a method for detecting total phosphorus in water by ammonium molybdate spectrophotometry. A problem thatsilica formed by a silicon element in a water sample affects the test accuracy during the testing of the phosphorus content by ammonium molybdate spectrophotometry exists in the prior art. The methodin the invention comprises the following steps: [1] digesting the water sample to obtain a digestion solution; [2] adding ascorbic acid, an antimony salt and ammonium molybdate to the digestion solution to obtain a blue complex solution; and [3] testing the blue complex solution by spectrophotometry to obtain the phosphorus content of the water sample, wherein the digestion solution is also treated, between step [1] and step [2], as follows: [1-1] quantitatively transferring the digestion solution, adjusting the pH value to 3-5, adding MgO to the digestion solution, and carrying out a stirringreaction; [1-2] adjusting the pH value of the digestion solution to 1-3, and making the volume of the digestion solution reach a constant volume; and [1-3] standing the digested solution having the constant volume, and filtering the obtained solution by an ultrafiltration membrane to remove obtained precipitate. The method is suitable for water quality testing.

The invention relates to the field of flaw detectors, in particular to a walking mechanism of a flaw detector for a round pipeline. The walking mechanism comprises a flaw detection mechanism, a limiting mechanism, a flange, a dust removal mechanism, a transmission mechanism and a cleaning mechanism. When the flaw detector walks, the dust removal mechanism is powered on to generate gas while rotating, and furthermore, as the dust removal mechanism generates wind energy in an annular array, the dust removal mechanism cleans dust on the inner wall of a pipeline needed to be detected in advance ina walking process of the whole mechanism, so that the flaw detection mechanism cleans dust of an undetected pipeline in advance favorably, and therefore, the condition that detection of the pipelineby the flaw detection mechanism is affected by dust is avoided. When the flaw detection mechanism walks, the dust removal mechanism cleans dust of the undetected pipeline in advance, the transmissionmechanism is driven while the dust removal mechanism rotates, and after the transmission mechanism rotates, the transmission mechanism located at the bottom of the flaw detection mechanism generates wind energy to blow dust cleaned by the dust removal mechanism to the direction of the undetected pipeline, so that dust is prevented from being accumulated in the pipeline.

The invention discloses a rare earth automatic weighing and feeding device, a feeding method and a rare earth automatic weighing and feeding system. The device comprises a support frame and a stock bin arranged on the support frame, and also comprises a material shifting device, a weighing device and a controller, the material shifting device comprises a material shifting driving device and a shifting device, and the shifting device is arranged in the stock bin; the weighing device is arranged at the bottom of the stock bin, and is used to detect the weight of rare earth materials in the stockbin and output weight signals; the controller is connected with the material shifting driving device and the weighing device in a signal mode, and is used to receive the weight signals and control the operation of the material shifting driving device, the controller is configured that when a weighing request is received, the material shifting driving device drives the shifting device to reverse or shake, and then the weight signals of the weighing device are read. The material shifting device is arranged to shift the rare earth materials, so that the rare earth materials are smoothly discharged, the controller is connected with the material shifting driving device and the weighing device in a signal mode, and controls the operation of the material shifting driving device, timing and quantitative automatic feeding is achieved, and blocking of an outlet caused by agglomeration during discharging is avoided.

The invention discloses a micro-fluidic chip detection method based on uniform mixing of magnetic beads. The method comprises the following steps of: step 1, presetting a solid reagent in a micro-fluidic chip; step 2, assembling the micro-fluidic chip; step 3, performing sample introduction; step 4, performing immune reaction; step 5, blowing away redundant liquid; and step 6, performing optical detection. According to the method of the invention, the step of cleaning with cleaning liquid is omitted, so that the operation steps are more simplified, the detection time is further shortened, and the detection efficiency is improved. The design structures related to corresponding external matched liquid path devices and corresponding cleaning flow channels of the chip are also simplified, the influence of the cleaning liquid on the compound after the immune reaction is effectively avoided, and the stability and the accuracy of a detection result are improved. According to the detection method, a uniform mixing reaction mode of upper and lower magnetic force interactive adsorption is adopted, so that the specific binding efficiency of an immune complex is improved, the immune complex is favorably separated from other components, the cleaning step of the complex is omitted; and the structure of external matched detection equipment is greatly simplified, and the production cost is reduced.