121results about How to "The test results are accurate and stable" patented technology

The invention relates to the technical field of microfluidic chip chemiluminescent immunoassay, in particular to a chemiluminescent detection microfluidic chip and a chemiluminescent detection microfluidic chip system and application thereof. The chemiluminescent detection microfluidic chip comprises a sample feeding unit (1), a liquid storage unit (2), a reaction unit (3) and a waste liquid unit(4), and further comprises a quantifying unit (5) for quantifying a sample to be detected, wherein the quantifying unit (5) comprises a liquid inlet (51) connected with the sample feeding unit, a liquid outlet (52) connected with the waste liquid unit, a quantifying structure (53) for quantifying, and a temporary storage structure (54) for temporarily storing excess liquid, which is connected withthe reaction unit. The chemiluminescent detection microfluidic chip system consists of three layers, namely an upper layer, a middle layer and a lower layer; the middle layer is the chip; the upper layer and the lower layer are used for closing the middle layer; the upper layer is provided with a sample feeding hole connected with the sample feeding unit and a yielding hole corresponding to the liquid storage unit. The chemiluminescent detection microfluidic chip is simple in detection process, can quantify the reaction sample and has high sensitivity and strong repeatability.

The invention relates to the field of micro-fluidic chip molecular diagnosis, and in particular to a molecular diagnosis micro-fluidic chip, a molecular diagnosis micro-fluidic chip system and applications of the molecular diagnosis micro-fluidic chip and the molecular diagnosis micro-fluidic chip system. The chip comprises a sample injection unit (1) which is used for receiving to-be-detected samples, at least one liquid storage unit (2) for storing reaction reagents, a cell lysis unit (3) for conducting cell lysis and a nucleic acid amplification unit (4) for conducting nucleic acid amplification, wherein the cell lysis unit comprises a slit (31) as well as a first compartment (32) and a second compartment (33) which are separated by virtue of the slit; at least one compartment is configured with grinding micro-beads; the first compartment communicates with the sample injection unit; and the second compartment communicates with the at least one liquid storage unit, so as to receive acell lysis solution. The chip system is composed of three layers, namely an upper layer, a middle layer and a lower layer, wherein the chip is arranged on the middle layer; the upper and lower layersare used for covering and sealing the middle layer; the upper layer is provided with a sample injection hole which is connected to the sample injection unit, and the sample injection hole correspondsto an avoiding hole of the liquid storage unit. The chip is simple in detection process, high in sensitivity and strong in repeatability, and reaction samples can be quantified.

The invention relates to an electromagnetic impact dynamic tensile test method and a device, and belongs to the technical field of dynamic tensile mechanical property test of materials. The device adopts an electromagnetic pulse to load; a tensile test piece (8) passes through a central hole of an electromagnetic pulse device (16); the electromagnetic pulse device (16) is used for arousing a strong-pulse magnetic field; the action of electromagnetic force is generated between a target (14) and an electromagnetic pulse coil (18), so that the tensile test piece (8) mounted between the target (14) and a bracket (10) obtains direct instantaneous tensile force to finish the dynamic tensile test of the tensile test piece (8). The method and the device are used for measuring the dynamic stress and strain relationship of the materials in a high strain state; and the device has simple structure and simple test process, can be used for carrying out direct dynamic tensile test as well as the dynamic tensile test of the materials under the conditions of different high strain rates and ultrahigh strain rates, and has low cost and good application prospect.

The invention relates to a method for measuring glycosylated hemoglobin content, which comprises the following steps of: a, uniformly mixing a whole blood sample and hemolytic liquid; b, adding an appropriate amount of hemolyzed sample into latex suspending in glycine buffer solution; c, respectively adding an antibody B reagent and an antibody A reagent after preset time; d, uniformly mixing andreading a scattering value through a specific protein analyzer under the condition of single-wavelength light irradiation; and e, reading the glycosylated hemoglobin content from a standard curve diagram according to the scattering value. The glycosylated hemoglobin content of the blood sample can be directly determined without separately measuring the total hemoglobin content and the glycosylated hemoglobin content of the blood sample by taking fixed-time nephelometry as a detection principle; and antibody working solution does not need preparing in advance, so that the effective service time of the reagents is prolonged, the operating steps are simplified and the measuring time of the sample is shortened.

A method and a device for objects counting in image processing includes acquiring the depth image of any one frame; detecting objects according to the depth image; associating the identical object in different frames to form a trajectory; and determining the number of objects according to the number of trajectories. The devices include an acquisition module for acquiring the depth image of any one frame; a detection module for detecting objects according to the depth image; an association module for associating the identical object in different frames to form a trajectory; a determining module for determining the number of objects according to the number of trajectories. The objects are detected according to the depth image. The identical object in different frames is associated to form a trajectory and the number of objects is determined according to the number of trajectories.

The invention provides an ultrahigh pressure liquid phase detection method for a Chinese patent medicine containing at least two medicinal materials of white paeony root, ginseng, root of red-rooted salvia, sweet worm wood herb, liquoric root, szechuan lovage rhizome, Chinese angelica, astragalus and nutgrass galingale rhizome. The method comprises the following steps of: preparing solution of a test sample and solution of a contrast medicinal material; performing ultra performance liquid chromatography (UPLC) detection by taking acetonitrile-water as a mobile phase and using an ultraviolet detector and / or a mass spectrum detector, wherein the detection wavelength is between 201 and 320nm; and performing result detection, namely detecting whether a corresponding chromatographic peak exists or not at a position where the retention time is as same as that of a contrast medicinal material chromatogram in a chromatogram of the test sample. Compared with thin layer identification and high performance liquid chromatography (HPLC) detection methods, the ultrahigh pressure liquid phase detection method successfully improves the resolution of the chromatogram, shortens the analysis cycle, and ensures more precise and stable results.

The invention provides a major diameter rock core holder for realizing multi-parameter measurement under high-temperature and high-pressure conditions. The rock core holder comprises an annular space, a rock core chamber, measuring electrodes, a heating and pressurizing device, an external connection measuring device, a temperature controller and a high-pressure constant speed pump, wherein the annular space is formed by a cylinder body, a glue cylinder, an upper plug and a lower plug. The holder has the characteristics of good high-pressure and high-temperature resistance, no pollution, simple design, convenient operation, simultaneous measurement of multiple parameters, and stable and accurate test result, and can realize measurement of the permeability, the sound wave and the stratum factor at a highest temperature of 150DEG C under a maximum pressure of 70Mpa, and experiment analysis measurement of the saturation index, the multiphase flow displacement and other rock physical parameters through a gas driving method or a semi-permeable separator plate method.

The invention relates to a rotary part surface quality detection system; a portal frame is arranged in the front of a soleplate; an upper and a lower adjusting mechanisms of a camera base which consist of a big supporting plate and a first adjusting lever are arranged at the rear of the crossbeam of the portal frame through a locating plate; the camera base is arranged on the big supporting plate and is in threaded connection with the first adjusting lever; a camera is arranged at the rear of the camera base; an upper and a lower adjusting mechanisms of a connecting plate which consist of a second adjusting lever and a small supporting plate are arranged on the left surface; the connecting plate is in threaded connection with the second adjusting lever; a light source is fixed below the connecting plate; the middle part of the soleplate is provided with a transmission box and an electric motor; a three jaw chuck is arranged above the transmission box; a light source adjuster is arranged at the left-rear part of the soleplate; a monitoring operation system is arranged on the left side of the soleplate; the camera is connected with the monitoring operation system; and the light source is connected with the light source adjuster. The rotary part surface quality detection system has the characteristics of being simple in structure, easy to operate, stable in working process, accurate and stable in detection results, and the like, and is capable of improving the detection precision and efficiency of product quality and relieving the labor intensity.

The invention discloses a measurement device for the swing angle of a multi-sling bridge crane. The multi-sling bridge crane comprises a bridge crane trolley provided with first lifting ropes. The measurement device for the swing angle of the multi-sling bridge crane is characterized in that the measurement device comprises a swing angle calculation and control computer, a fan-shaped plane infrared light emitter, a swing angle detection camera, lifting rope vertex markers and a video image processor; the fan-shaped plane infrared light emitter is used for emitting fan-shaped infrared light, and the light encounters one or more of the first lifting ropes, so that light spots are left; the swing angle detection camera is used for shooting images of the first lifting ropes; the video image processor is used for receiving the images of the first lifting ropes and finding the positions of the light spots and the lifting rope vertex markers; the swing angle calculation and control computer, the fan-shaped plane infrared light emitter and the video image processor are arranged on a second lifting rope, and the second lifting rope moves along with moving of the bridge crane trolley; and the swing angle calculation and control computer works out the position coordinates of the light spots and the lifting rope vertex markers, and thus a swing angle value is obtained. By adoption of the measurement device for the swing angle of the multi-sling bridge crane, the swing angle of the bridge crane can be detected accurately, and the measurement device has the advantages of being low in cost and high in antijamming capability.

The invention discloses an automatic gain control (AGC) method of a radio frequency loop of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) terminal, which comprises the following steps that (1) a wireless signal enters the radio frequency chip of the TD-SCDMA terminal, and radio frequency amplification is carried out on the wireless signal by a radio-frequency amplifier, wherein the radio frequency amplification gain is changeable; (2) mixing processing is carried out on a local oscillation signal generated by a local oscillation generating circuit and the radio frequency-amplified wireless signal to obtain a low-frequency analog signal; (3) the low-frequency signal obtained by mixing is converted into an original digital signal by an analog to digital converter after being amplified, and then power detection processing and subsequent digital gain processing are respectively carried out, wherein the analog amplification gain and the digital gain-level gain are changeable; and (4) gain control is carried out on the gain feedback process, and the digital signal with stable amplitude is input to a baseband chip. The method can increase the feedback speed of an AGC system in the TD-SCDMA terminal, reduces the errors of the feedback control and reduces the processing computation amount of the baseband chip.

The invention provides an automatic photo-stimulated chemiluminescence detector which can enhance the accuracy of chemical analysis. The detector includes a sample introduction module, a sample addingarm module, an incubating tray module, a reagent disk module and a reagent arm module; a sample in the sample introduction module is transferred into a reaction cup located on the incubating tray module through the sample adding arm module; the reagent arm module transfers a reagent in the reagent disk module into the reaction cup after the reaction cup rotates to a specified location with incubating trays; and the sample and reagent in the reaction cup are transferred to a detection module to perform light excitation after the mixing and incubating in the incubating trays are finished, and detection is performed on a luminous signal generated after excitation. The whole operation of the detector is automatic operation, so that the uncertainty problems of individual difference, artificialerrors and operating specifications of manual operation can be effectively avoided, and therefore, the accuracy of chemiluminescence immunoassay can be enhanced.

The invention discloses a high-efficiency glass bottle defect online detection device and a working method thereof. The device comprises a conveying mechanism, a detection mechanism, a grabbing mechanism and a waste pool; the conveying mechanism comprises a PLC, a servo driver, a servo motor and a conveying device, the PLC, the servo driver and the servo motor are connected in sequence, the servomotor provides power for operation of the conveying device, and glass bottles are placed on the conveying device; and the detection mechanism comprises a light source, a CCD camera, a lens, a photoelectric sensor and an image acquisition card, the light source comprises a bottle opening annular LED front light source and a bottle body LED back light source, and the bottle opening annular LED frontlight source 211 is installed below the CCD camera 22. According to the high-efficiency glass bottle defect online detection device and the working method thereof, non-contact visual detection is adopted, comprehensive defect detection is carried out on the bottle openings, the bottle bodies and the bottle bottoms of the glass bottles, and the working method is simple, high in precision, high inefficiency and high in intelligent degree.

The invention relates to an HPLC detection method of L-erythrothioneine in mycelium or fermentation broth. The method comprises a pretreating step of the mycelium or the fermentation broth and an HPLC detection step. The pretreating step of the mycelium includes performing solid-liquid separation of the fermentation broth, collecting the mycelium, adding pure water for dissolution, leaching to obtain leaching liquor, and performing ultrafiltration by an ultrafiltration membrane to obtain permeate of a sample containing the L-erythrothioneine. The pretreating step of the fermentation broth includes leaching the fermentation broth directly, and performing ultrafiltration by an ultrafiltration membrane to obtain permeate of a sample containing the L-erythrothioneine. According to the method, simple pretreatment is performed before detection by utilization of the HPLC, thus removing most impurities in the fermentation broth and the mycelium, prolonging the service lifetime of chromatographic columns, increasing the separation degree of the sample, making detection results more accurate and more stable and reducing the detection cost.

The invention discloses a fault detection method for scattered strands in power transmission line. The method comprises the following steps: A) obtaining an image of an image edge; B) detecting the obtained image for a first provisional line; C) keeping all pixel points that are of the same or close to colors of a power transmission line; D) carrying out the first filtering to the interference lines in the image of an image edge for a second provisional line, and the incomplete part in the second provisional line is supplemented for a third provisional line; conducting a second filtering to the interference lines in the image of an image edge so as to finally obtain all determined lines in the image of an image edge, or rather, determined power transmission lines as well as to determine the positions of the lines; E) determining the transmission directions and the widths of the power transmission lines; judging whether there exist hidden hazards for scattered strands and fault of scattered strands in a sliding window; and G) marking the number of areas on the power transmission line where scattered strands occur. According to the method provided by the invention, it is possible to locate the areas with scattered strands more accurately and robustly. And the decision errors can be reduced as well.

The invention provides a method for detecting ammonia escape of a flue gas denitrification system. The method includes that flying ash of a first electric field ash hopper of an electrofilter serves as a detection object. Researches show that by analyzing, an excellent linear relationship is existed between ammonia escape converted by ammonia content in first electric field flying ash of the electrofilter and ammonia escape of the flue gas denitrification system, the flying ash of the first electric field ash hopper of the electrofiler is mixed with water to obtain to-be-detected sample solution, the water-to-ash ratio is controlled to be (20-100):2 while the pH (potential of hydrogen) value of the to-be-detected sample solution is controlled to be 6.0-6.8, most of and even all of ammonia in the flying ash is enabled to be solved in the water without ammonia escape, and accordingly an accurate result is obtained. Therefore, the detection result, obtained by the method, of ammonia escape of the flue gas denitrification system is more accurate, and is stable as not being affected by equipment failure.

The invention discloses a detection system for colloidal gold immunochromatographic assay (GICA) test paper. The detection system comprises an information acquisition unit and an information processing / analysis unit connected with each other. The information acquisition unit is used for performing optical scanning on the test paper by emitting light beam to the test paper, receiving reflected beam from the test paper, converging the reflected beam and converting into electric signal. The information processing / analysis unit is used for processing / analyzing the electric signal and outputting detection result. The invention solves the technical problems in prior arts: only qualitative judgment and incapability of quantitative analysis by naked eye observation, and influence from subjective factor; ensures accurate and stable detection result; in comparison with CCD imaging technique, has small information processing computation amount that can be finished by ordinary singlechip; and adopts single LED as light source. The detection system has the advantages of low cost, high sensitivity, small volume, light weight, and portability.

The invention relates to the product defect automatic online detection technology and in particular relates to a detonator defect automatic optic inspection machine. A two-dimensional direction adjusting mechanism (6) arranged on a rack (1) is connected with an image acquisition system (2), a 0-degree four-side strip light source assembly (17) is connected under the image acquisition system (2) by an adjusting pull rod (9), a detonator mold base (19) provided with a detonator (20) is positioned under the 0-degree four-side strip light source assembly (17), a driving cylinder (11) arranged on the rack (1) is connected with a two-dimensional direction adjusting mechanism (13) and drives a detonator backlight plate (18) to move up and down by a guide rod (16), a locating sleeve hole (22) consistent with the detonator mold base (19) is formed on the detonator backlight plate (18) and sleeves the detonator (20), a communication and cylinder driving control circuit module (23) is arranged on the rack (1). The detonator defect automatic optic inspection machine has high detection efficiency, and stable and accurate detection result, ensures that the detection result is objective and reliable, is suitable for online matched use and detection of the detonator filling production line, and is a brand-new high-efficiency detonator defect foreign matter automatic optical image detection machine.

The invention discloses a photoelectric chessboard comprising a chessboard pane, a microprocessor, a storer, an interface module and a power module and also comprising a chess piece detecting unit anda chess piece displaying unit which are connected with the microprocessor; the chess piece detecting unit comprises an infrared LED driver, an infrared light receiving and transmitting device and ananalog-digital converter; and the chess piece displaying unit comprises an LED driver of white chess pieces, an LED driver of black chess pieces, an LED lamp representing the white chess pieces and anLED lamp representing the black chess pieces. The invention also discloses a use method of the photoelectric chessboard. An infrared LED is driven by the infrared LED driver; the photoelectric conversion is carried out through an photosensitive device; after the signal passes by the analog-digital converter, data is analyzed by the microprocessor and then is sent to a game server; the game serversends the command of moving the chess pieces of the counterpart to the microprocessor; and the LED lamp representing the white chess pieces or the LED lamp representing the black chess pieces is driven by the LED driver of white chess piece or the LED driver of black chess pieces until no chess piece can be moved. The photoelectric chessboard ensures stable signal, can not be affected by the environment and can realize the remote chess playing and the local chess playing.

The invention discloses clutch friction plate flatness testing equipment and a using method thereof. The clutch friction plate flatness testing equipment comprises an upper structure and a lower structure. The upper structure comprises an air cylinder support, an air cylinder, a linear bearing, a tested friction plate, a spline seat, a precise sensor support, a fluted disc, a magnetoelectric sensor and an operating console. The lower structure comprises a belt pulley upper end bearing, a control box, a main shaft, a main bearing, a belt pulley III, a triangular belt II, a belt pulley shaft, a belt pulley II, a belt pulley I, a triangular belt I, a motor supporting plate, a belt pulley lower end bearing, motor fixing bolts, a gearbox, an alternating-current motor, a lower support and a frequency converter. A main transmission system, a friction plate bearing mechanism and a precise probe fixture are arranged in the upper structure and the lower structure. The clutch friction plate flatness testing equipment has the characteristics of higher rapidness and simplicity in installation, high automation level, convenience in testing operation and the like, and can better guarantee the accuracy of clutch friction plate flatness testing.

The invention relates to the field of fiber density detection and in particular discloses a method for measuring fiber density. A volumetric flask serves as a measuring container, kerosene serves as a measuring medium, and the fiber density is detected by utilizing an Archimedes principle. The measurement method disclosed by the invention is easy to operate, high in measurement result accuracy and low in cost and is suitable for fiber density measurement of various occasions such as labs and engineering fields.

The invention relates to the technical field of detection, in particular to a method for detecting the content of one or more cannabinoids in an industrial hemp extract by utilizing HPLC. According tothe method, the cannabinoid substance in the industrial hemp extract is ultrasonically extracted by using methanol, and is detected by using a high performance liquid chromatograph (HPLC). And the content of one or more cannabinoids in the industrial hemp extract is quantitatively obtained by adopting a retention time qualitative method and an external standard method. The method is simple to operate and good in stability, so that various cannabinoid substances in the industrial hemp extract can be quickly and accurately quantified.

The invention discloses a depression symptom information evaluation method, which analyzes interview contents of a visitor and a psychologist, fuses voice features and character embedding features ininterview audio and character translations, scores depression-related psychological scale corresponding to the visitor, and improves the evaluation accuracy under the condition of not limiting the interview contents. According to the invention, an objective depression auxiliary evaluation method and rapid, effective and economic depression symptom self-evaluation can be provided for psychologists.

The invention discloses a spontaneous polarization performance testing device for tourmaline powder materials, and relates to a device for testing the electromagnetic performance of a material. The testing device is mainly composed of a sample chamber, a temperature-measuring temperature controller, a signal detector and a data processor, wherein the sample chamber comprises a shielding shell, an insulation sample cell, a heating element, a signal picking electrode, a signal picking electrode interface and a temperature-measuring element; a temperature-measuring outgoing line is used for connecting the temperature-measuring element and the temperature-measuring temperature controller, and the temperature-measuring temperature controller is connected with the heating element through a heating control line; and an electrode outgoing line is used for connecting the signal picking electrode and the signal detector from the signal picking electrode interface, and the signal detector is connected with the data processor through a wire. in a precision constant temperature condition, the device can carry out charge integral amplification on collected polarization charge by a pole plate so as to the spontaneous polarization performance parameter of a tested sample and the defect of inaccurate test result in the prior art is overcome.

The invention relates to a detection device and method for sealing performance between an anti-explosion valve outer wire and a cover plate of a lithium ion battery. The detection device comprises a detection component, a pneumatic reversing switch (17), an oil mist filter (18), a pressure regulating valve (19), an air supply (20), a detection medium (21) and a medium container (22); and the detection component is partially arranged in the medium container (22) filled with the detection medium (21). The detection method comprises the following steps: sleeving a part (14) to be detected on an upper sealing piece (13); driving the upper sealing piece (13) to move downwards by a piston rod (3) to press the part (14) to be detected on a lower sealing piece (15); regulating the pressure regulating valve (19) to inflate air in the air supply (20) to the part (14) to be detected; and observing whether bubbles merge from the detection medium so as to judge the sealing performance between the anti-explosion valve outer wire and the cover plate. The invention is applicable and convenient, and the yield of anti-explosion lithium ion batteries is greatly improved, therefore, the device and the method have practical values.

The invention provides a method for simultaneously measuring content of three antitubercular agents (retozide, rifampicin and pyrazinamide) in blood and tissues. The method has the characteristics of simplicity and convenience in operation, high precision, high detection speed, stability and reliability. A high-efficient liquid-phase chromatographic instrument (LC2010C), a column temperature control box AT-130 and an Lc-solution spectrum work station of the Japan Shimadzu Company are adopted. The chromatographic column is an analysis column and adopts a C8 column, the protection column adopts a C18 column, and the fluid phase adopts sodium 1-heptanesulfonate solution to prepare.

A NO<3><->-<17>O isotope detection method for trace nitrates in ice cores is disclosed. The method includes a) a step of enrichment and test analysis for trace NO<3><-> in an ice core aqueous solution, b) a step of converting the NO<3><-> into N2O through a denitrifying bacterium process, and c) a step of analyzing nitrogen and oxygen stable isotopes for constant N2O gas. The detection method achieves enrichment and purification of nitrous oxide generated by the denitrifying bacterium process, and removes gaseous CO2, water vapour and a large amount of organic components generated in a bacterial reaction process, thus avoiding influences of impurity gases entering a mass spectrograph on a test result. Through a pyrolysis technique for the nitrous oxide gas, isotope analysis on [delta]<15>N / <14>N and [delta]<17>O / <16>O or excess <17>O / <16>O and [delta]<18>O / <16>O for N2 and O2 can be achieved.

The invention provides a method for measuring insoluble substances in sodium humate, and belongs to the field of chemical experiment detection. According to the technical scheme, the method comprises the following steps: S1, extracting the insoluble substances; S2, carrying out suction filtration; S3, carrying out weighing; and S4, calculating a result. The method has the beneficial effects that nylon filter cloth is adopted, so that the sodium humate is not adsorbed on the nylon filter cloth, and only the water insoluble substances are left on the filter cloth; and the filtration is changed into the suction filtration, so that the water consumption is reduced, the detection time is shortened, the efficiency is improved, and the detection result is accurate and stable.

The invention provides a sample pretreatment method for detecting fat-soluble vitamins in serum through high performance liquid chromatography-tandem mass spectrometry. The specific protein precipitant is adopted and mixed with the internal standard substance working solution to form the internal standard solution, so that sample pretreatment is simply and efficiently completed, no extra sample enrichment or other operation is needed, the recovery rate of fat-soluble vitamins A, E, K1 and K2 in a serum sample can be remarkably improved, and the pretreatment cost of the sample is reduced, so that the detection sensitivity of the fat-soluble vitamins in the serum is greatly improved, and the accuracy and the stability of a detection result can be ensured. Meanwhile, the invention further provides application of ammonium acetate to preparation of the protein precipitant.

The invention provides an implicit magnetic code detection device. The implicit magnetic code detection device comprises a magnetic sensor, an amplifying circuit connected with the magnetic sensor, a shaping circuit connected with the amplifying circuit, and an A / D conversion circuit connected with the shaping circuit, and further comprises a single-chip microcomputer, a display unit connected with the single-chip microcomputer, and a data center, wherein the single-chip microcomputer is connected with the output terminal of the A / D conversion circuit. The implicit magnetic code detection device is low in cost, small in size, and convenient to carry; meanwhile, time for detection is short, and detection is accurate. By the introduction of the data center, large-scale management of data storage, calling and updating are more convenient. The invention further provides an implicit magnetic code detection method, wherein the magnetic sensor is used for picking up a signal, the signal is amplified, shaped and subjected to A / D conversion through the amplifying circuit, the shaping circuit and the A / D conversion circuit respectively, and the signal is transmitted to the single-chip microcomputer; the single-chip microcomputer and the data center are matched with each other for analyzing and identifying the signal, and an identification result is displayed. The implicit magnetic code detection method is simple, high in accuracy, and good in stability.

The invention discloses a people counting method based on a multi-scale mask perception feedback convolutional neural network. The people counting method comprises the following steps: (1) searching and manufacturing a people counting database; (2) generating training and testing samples; (3) carrying out data preprocessing on samples of the training and testing set; (4) constructing a people counting deep network model; (5) sending the generated training sample into the constructed deep network model for training, and optimizing the parameters of the network through an Adam optimization method; and (6) testing the deep network model. According to the method, a people counting network is constructed by using a multi-task learning strategy, the result of mask estimation branching is fused into picture features by the network, and then a robust people counting model is obtained; according to the method, a simple fusion strategy and a multi-scale learning strategy based on hole convolution are used, so that an accurate and stable detection result is realized, and complex configuration and memory consumption in application are avoided.