435results about How to "No mutual interference" patented technology

The invention discloses a method and a device for image rendering. The method comprises steps that: a target area is identified from an image to be rendered; a virtual light source is set for the target area; and the virtual light source is used to render the target area. The device comprises an identification unit, a setting unit and a rendering unit. The method and the device are utilized to render the image to be rendered, rendering for the image to be rendered is realized through the virtual light source, the virtual light source has a rendering effect only exerted on the corresponding target area, no influence is exerted on other parts of the image to be rendered, and thereby an image effect of the image to be rendered can be relatively excellent.

The invention discloses a method and apparatus of real-time automatic calibration and compensation for beam drift. The method comprises the following steps that: after the primary collimation of a laser beam is conducted, the laser beam sequentially passes through three beam splitter prisms to be split to obtain a bunch of work beams and three bunches of monitoring beams; and the three bunches of monitoring beams are received by corresponding photoelectric sensing devices and are respectively used for monitoring energy drift and angular offset, parallel offset as well as collimation degree drift, and each parameter of the laser beam is adjusted in real time according to the obtained monitoring information. The device comprises a laser, a single-mode fiber, a collimating lens, a pyramid prism, a first beam splitter prism, a plano-convex lens, a first photoelectric sensing device, a second beam splitter prism, a second photoelectric sensing device, a third beam splitter prism, a rhombic prism, a third photoelectric sensing device, a computer and a nano-translation stage. The method and apparatus have the advantages of high adjustment accuracy, large adjustment range, fast and accurate adjustment process, the interference with each other is not generated, and the structure of the apparatus is concise.

This invention puts forward an uncoupling test device for the scale factor and input shaft distortion angle of a gyro including a hexahedron frame, a holding strip, a baseplate and a holding down plate, in which, the hexahedron frame supports the holding strip, which restricts the baseplate, the gyro tilts to a certain angle along with the baseplate and 8 accurate location bolts are set on the baseplate, a test device is set on the level mesa of a single shaft rate swing table to provide an input angle velocity, the value of the tilted angle is got by testing the distance from the location bolt to the swing table mesa by a test device to uncouple the parameters based on the computation model.

The present invention discloses a mobile phone multi-station parallel testing device and a realization method thereof, and the problems of complexity and low efficiency of existing mobile phone testing equipment are solved. The device comprises a sound insulation box body with a cabinet door, a multi-station parallel testing mechanism arranged in the sound insulation box body, an industrial control machine and a control circuit board. The multi-station parallel testing mechanism comprises a multi-station mobile phone carrier for placing multiple mobile phones, and testing stations fixed in the sound insulation box body and are corresponding to the positions of the multi-station mobile phone carrier for placing mobile phone, and at least two testing stations in the testing stations are used for testing different projects. The multi-station parallel testing mechanism also comprises a central rotation mechanism for rotating the multi-station mobile phone carrier such that the mobile phones placed on the multi-station mobile phone carrier are moved to another station from a current testing station. According to the mobile phone multi-station parallel testing device and the realization method, through time division multiplexing and multi-task parallel test, the working efficiency is four times of a traditional testing process in the condition of not adding hardware resources.

The present invention is environment friendly blast furnace slag treating process and system. The blast furnace slag treating process includes water quenching the red slag for fast cooling with the granulating tank sprayed cooling water and collecting in the collecting pipeline; conveying to the distributor of dewatering drum and separating into water granulated slag falling to the belt conveyer for being transported to the slag yard and filtered hot water; collecting hot water, pumping to cooling tower for cooling and condensing through the atomizing nozzle in the condensing tower; and collecting the condensated water and returning through the third water pipe, the buffering tank and the fourth water pipe to the granulating tank for reuse. The present invention has the advantages of simple system composition, environment friendship, low power consumption, etc.

The invention discloses a method for eliminating null shift of a micro-electromechanical system (MEMS) gyroscope. The method comprises the following steps of: (1) acquiring a zero-point value zero of an initial gyroscope; (2) arranging a tolerance range plus or minus allowance nearby the zero-point value zero of the initial gyroscope, and determining whether a difference value diff between a current output value of the gyroscope and the zero-point value zero of the initial gyroscope exceeds the minus or plus allowance or not; judging that the gyroscope is at a standstill if the difference value diff between the current output value of the gyroscope and the zero-point value zero of the initial gyroscope does not exceed the tolerance range, and enabling the current output value of the gyroscope to participate in the calculation of a zero point of the gyroscope; and judging that input is available outside if diff exceeds the tolerance range, and adopting the difference value as a magnitude of angular velocity of the gyroscope to be outputted normally and not to participate in the calculation of the zero point. Due to the adoption of the method, the null shift and temperature drift of the MEMS gyroscope can be effectively overcome, a precise and complex error compensation algorithm is not needed, and the zero point variation of the gyroscope can be tracked in real time.

The present invention relates to a vehicle mounted video monitoring system and monitoring method thereof. The invention adopts a symmetric structure, one set of system host computer, a liquid crystal touch screen display and an infrared video camera are respectively provided in the beginning and the end driver rooms of the train. The two system host computers are identical, three 360-degree static wide angle cameras are respectively mounted in equidistance at the top of each compartment, a set of video processing apparatus and network device is mounted in the wire distributing groove, data transmission between compartments adopts the wired connecting passage apparatus or wireless connecting passage apparatus, each host computer can perform data transmission between every video camera, and the video camera is connected with video processing and storage apparatus (SDVR). The invention has advantages of no blind zone of compartment monitoring, seamless connection between the automobile door and the platform, safe and reliable data transmission; friendly man-machine interface, facilitating operation, easy operation and maintenance; and system reserved interface to TCMS and PIS.

The invention provides a display device comprising a plurality of buffer strips, a rubber frame and a curved surface display panel. Each buffer strip comprises a body and a plurality of protruding lugs; the protruding lugs are arranged on one side of the body and are arranged at intervals; each protruding lug comprises a top surface and an interval is arranged between each two adjacent protruding lugs. The rubber frame is provided with a concave curved surface. The curved surface display panel is provided with an inner curved surface and an outer curved surface. The inner curved surface is convex, and the inner curved surface is correspondingly arranged at the concave curved surface of the rubber frame. The buffer strips are respectively attached to the two edges of the inner curved surface along the curved contour of the inner curved surface, and the sum of the arc lengths of the top surface of the above protruding lugs is less than the arc length, opposite to the side of the protruding lugs, of the body.

A converter (311) converts an AC voltage value (e) to the DC electric power of a DC voltage value corresponding to a set input. An inverter (312) is controlled by a frequency electric power control circuit part (330) to convert the DC electric power to a dual frequency AC electric power for alternately outputting low and high frequencies at a frequency ratio (duty) corresponding to the set input. A matching transformer (321) having a tap (321C) at which the resonance impedance corresponds to the output impedance of an oscillator circuit part (310) receives the dual frequency AC electric power. A low frequency series resonance circuit (325) or a high frequency series resonance circuit (326) is caused to provide a series resonance, thereby causing an induction heating coil (200) to induction heat an object (201) to be heated. In this way, the single oscillator circuit part (310) and the single induction heating coil (200) are used to effectively induction heat the object (201) by means of the dual frequency resonance.

An adsorption sampler of polycyclic aromatic hydrocarbon based on an electrospinning lactic acid-caprolactone (P(LA / CL), 7 / 3) nano-fiber membrane is provided and relates to water quality monitor equipment. In the sampler, a water collection sleeve is fixed with a membrane supporting sleeve, a check valve is arranged at the lower part of the water collection sleeve and is connected with a sampling needle and the membrane supporting sleeve, the water collection sleeve can be externally connected with a polytetrafluoroethylene sampling tube to discharge water, the outer wall of the membrane supporting sleeve is used for fixing the fiber membrane to adsorb the polycyclic aromatic hydrocarbon in the water, a water diversion bin is arranged at the bottom of the membrane supporting sleeve, the bottom of the membrane supporting sleeve is connected with the check valve, and a pulling piston is used for sucking a water sample and transports the water sample to the water collection sleeve to be contacted with the fiber membrane. The electrospinning lactic acid-caprolactone (P(LA / CL), 7 / 3) nano-fiber membrane for matching is prepared through a high-voltage electrostatic spinning method. Fibers have the diameter of 200-800 nanometers and the thickness of about 0.3mm and have dense shape and strong adsorption ability. The sampler has the advantages that sampling, adsorption enrichment and solvent desorption can be synchronously carried out, the sampling quantity and a sampling frequency are easy to control, water samples before and after enrichment are respectively stored in the water collection sleeve and the membrane supporting sleeve without mutual interference, the manual operation is adopted and matching equipment, such as a vacuum pump, a power supply, a solid frame extraction bracket and the like, are not needed; the adsorption ability of the fiber membrane is strong, and the selectivity of different pollutants can be realized by changing different fiber membranes.

The invention discloses a method for radio frequency identification of a mobile communication terminal and equipment thereof, which aim to solve the technical problem of avoiding mutual interference when the mobile communication terminal and a RFID respectively normally operate. In the method of the invention, a mobile communication part and a RFID functional part are controlled to work in a time-division multiplexing working state by a system control part. The connection among the mobile communication part, the RFID functional part and an antenna is realized through a channel switching part,the mobile communication, the RFID functional part and the channel switching part are controlled through the system control part, and a data communication part and a communication network are in wired or wireless connection. Compared with the prior art, a RFID module is integrated in a GSM mobile communication terminal, the RFID tag information of a UHF frequency band is read, and the tag information is transmitted to a server, so that an individual mobile communication terminal can have a RFID read-write function, the mobile communication terminal and the RFID do not mutually interfere, and the miniaturization and the portability of a RFID reader-writer are realized.

The invention relates to gateway equipment, which comprises at least one RJ45 interface, an Ethernet controller and a 485 bus controller, wherein the RJ45 interface is used for connecting other equipment through twisted pairs; the Ethernet controller is connected with a first pin, a second pin, a third pin and a sixth pin of at least one RJ45 interface and is used for exchanging Ethernet data with other equipment through at least one RJ45 interface; and the 485 bus controller is connected with a fourth pin, a fifth pin, a seventh pin and an eighth pin of at least one RJ45 interface and is used for exchanging 485 bus data with other equipment through at least one RJ45 interface. The gateway equipment with a port multiplexing function integrates an Ethernet interface and a 485 bus interface into a single RJ45 interface, so that an intelligent gateway can process the Ethernet data and the 485 bus data in parallel not to generate mutual interference, the function of the single RJ45 interface is expanded, and meanwhile, the problem of cost increasing caused by increasing different types of interfaces or carrying out protocol conversion is also solved.

The invention provides a housing assembly and a connector. The connector comprises a locking cap and a connector housing, wherein the front end of the locking cap is provided with a canted coil spring. The locking cap is rotatingly disposed on the connector housing in a sleeve manner, and the rear end of the locking cap is provided with a peripheral chute and an axial chute, wherein the axial chute is communicated with the peripheral chute and extends backwards from the peripheral chute. The connector housing is provided with a sliding block which can rotate in the peripheral chute relative to the locking cap, and also can move axially in the axial chute relative to the locking cap. The housing assembly also comprises an elastic part which provides a clockwise torque for the locking cap. The housing assembly also comprises a peripheral limiting structure which is used for limiting the clockwise rotating limit of the locking cap when the sliding block is located in the peripheral chute. When the locking cap is located at a limit position of clockwise rotation, the sliding block is staggered with the axial chute in a peripheral direction. The connector is reliable in locking, and is convenient to use.

The invention discloses a kit for detecting pig epidemic diarrhea viruses, pig transmissible gastroenteritis viruses and pig rotaviruses. The kit comprises primer pairs shown by SEQ ID NO:1-2, SEQ ID NO:3-4 and SEQ ID NO:5-6 for respectively performing specific amplification on the pig epidemic diarrhea viruses, the pig transmissible gastroenteritis viruses and the pig rotaviruses. The invention also discloses applications of the primer pairs shown by the SEQ ID NO:1-2, the SEQ ID NO:3-4 and the SEQ ID NO:5-6 in preparation of reagents for detecting the pig epidemic diarrhea viruses, the pig transmissible gastroenteritis viruses and the pig rotaviruses. The detection kit disclosed by the invention can be used for accurately and effectively detecting the pig epidemic diarrhea viruses, the pig transmissible gastroenteritis viruses and the pig rotaviruses, and is strong in specificity, high in sensitivity, short in time consumption, rapid in detection and good in application prospect.

The invention discloses a high sensitive multipath SF6 on-line leak detector, comprises a gas washing chamber which has a gas outlet connected with a solenoid valve for washing gas; a gas collecting chamber which has a gas inlet connected with the solenoid valve for washing gas and a plurality of paths of samples, wherein gas path solenoid valves are arranged on the gas path between each path of samples and the gas collecting chamber; a suction pump which has a gas inlet connected with the gas outlet of the gas collecting chamber; a sensor gas chamber which has a gas inlet and a gas outlet connected respectively with solenoid valves for sensor, wherein the solenoid valve for sensor beside the gas inlet is connected with the gas outlet of the suction pump; an exhaust gas chamber which has a gas inlet connected with the solenoid valve for sensor beside the gas inlet of the sensor gas chamber; control circuits; and a sensor which is arranged inside the sensor gas chamber. The detector of the invention detects SF6 content in a real-time way and displays detection results. Multipath gas samples can be detected at the same time without switching off equipments and the paths of gas which need to be detected can be switched based on needs freely. Cleaning can be performed to the gas path of the leak detector and detection processes of different gas paths do not interfere mutually.

The present invention relates to an immunoadsorbent and a composite affinity column for purification of fumonisin B1, aflatoxin, ochratoxin A and zearalenone. The immunoadsorbent comprises a solid carrier and fumonisin B1, aflatoxin, ochratoxin A and zearalenone monoclonal antibodies coupled with the solid carrier, the fumonisin B1 monoclonal antibody is secreted from hybridoma cell line Fm7A11 with the preservation number of CCTCCNO.C201636, the hybridoma cell line Fm7A11 is preserved in CCTCC in March 29, 2016 in Wuhan University Wuhan China. The composite affinity column is loaded with the immunoadsorbent with the fumonisin B1, aflatoxin, ochratoxin A and zearalenone monoclonal antibodies, and is used for purification of the fumonisin B1, aflatoxin, ochratoxin A and zearalenone. The composite affinity column can be used for purification and detection of fumonisin B1, aflatoxin, ochratoxin A and zearalenone toxin samples.

A direct current metering device belongs to current metering equipment in the electrotechnology, solves the problems of insufficient precision and stability of the existing current sensing device used for industrial gauging, and is used for the standard gauging in the strong direct current industrial field with the reliable and stably operated structure. The direct current metering device comprises a sensing head, an exciting transformer, a modulation transformer, a low pass filter, a phase sensitive demodulator, a synthesis modulator and a power amplifier; the sensing head is annular and comprises a first annular detection iron core, a second annular detection iron core and an annular magnetic shield iron core; the first and second annular detection iron cores, respectively wound by two sets of detection windings, are overlapped to be wholly placed in the annular hollow cavity of the annular magnetic shield iron core; and a feedback winding surrounds the annular magnetic shield iron core. The direct current metering device can realize the accurate gauging of the industrial strong direct current with ten thousands of amperes, realizes full automation traction in the whole process without unbalance, and is high in stability and reliability and suitable for industrial application, and the proportion precision achieves more than 0.02%.

The invention discloses a connector used for connecting two bolts or screws together. The connector comprises a sleeve, two polygonal nuts, two nut retaining rings and a spring, a polygonal channel is arranged inside the sleeve, the two polygonal nuts are positioned in the channel and are in clearance fit with the channel and capable of sliding along the channel, thread directions of the two polygonal nuts are opposite, the spring is positioned in the channel and positioned between the two polygonal nuts, the two nut retaining rings are mounted at two ends of the sleeve respectively, and the diameter of a middle hole of each nut retaining ring is larger than the screw diameter of each of the screws or the bolts. The invention further discloses a sectional type wind turbine blade which comprises at least two sections of blade portions, each two adjacent blade portions are connected to a whole through the bolts or the screws and the connector. The connector has the advantage of convenience in connection and facilitates field operation and mounting of the sectional type wind turbine blade.

The invention relates to a method of detecting ammonia cigarette filters intercepted by using ion chromatography conductivity device. The steps of the method: taking down the filter after the cigarette is burned off, shearing the filter into shivers vertically by scissors, putting the shivers into a receiving flask; adding 25-35mmol / L sulphuric acid solution into the receiving flask, plugging the tampon, filtering after vibration; analysising the filtrate by IC chromatograph, adopting CS12A cation exchange column; adopting the flow rate of elutriant 0.20-0.28mL / min, making the elutriant up of deionzied water and 35-45 mmol / L sulphuric acid solution, eluting by the gradient elutriant ; applying the temperature of 28-32 DEG C for the column and the detection cell. Sample size: 10-25 MuL, current flow: 15-32mA. The determination is made by retention time of standard substance while quantitation by peak area. The invention has the advantages of accurately and effectively detecting ammonia cigarette filters intercepted rapidly and reliability, convenient and easy handling. By adopting the gradient elute, the interference of various ions can be eliminated especially sodium ion; the invention solves the problem of rapid detection of ammonia cigarette filters intercepted and fills in the technology blank of detecting ammonia cigarette filters intercepted.

The invention discloses a label-free three-dimensional microscope method based on light filed propagation. The method comprises the following steps of (1) focusing a laser beam and projecting the laser beam on a sample to be tested, and gathering the laser beam with sample information by utilizing a microobjective; (2) splitting the laser beam with the sample information into a first laser beam and a second laser beam, and acquiring light intensity information images of the first laser beam and the second laser beam through a first image sensor and a second image sensor; (3) changing an angle of the incident laser beam on the sample to be tested, scanning the sample to be tested, gathering the laser beam with the sample information by utilizing a microscope, and then repeating step (2); and (4) performing calculating analysis on the light intensity information image through a computer to obtain a corresponding phase delay distribution diagram, and then obtaining a three-dimensional image through a three-dimensional reconstruction algorithm. The invention further discloses a label-free three-dimensional microscope device based on light filed propagation.

The invention discloses a contour microscopic method and device. The device comprises a laser, a single-mode optical fiber, a first collimating lens, a first polarizer, a first polarization beam splitter, a 1 / 4 wave plate, a second lens, a third lens, a 1 / 2 wave plate, a second polarization beam splitter, a first detection optical fiber, a second detection optical fiber, a differential detector, a master computer, a nano translation table and a sample platform used for placing a sample to be detected. According to the invention, a contour image of an object is obtained by virtue of a transverse difference, and transverse resolution of a system is effectively improved. The contour microscopic device disclosed by the invention has a simple structure, the transverse resolution is obviously improved and can reach up to 200nm or below, and the contour microscopic device disclosed by the invention can be applied to the optical microscopy field and nano-scale high-accuracy detection, measurement and manufacturing fields.

The invention provides a display panel and a driving method thereof, and a display device, belonging to the technical field of display. The problem that the two display modes of the existing semi-reflecting and semi-transmitting display device interfere with each other can be solved. The display panel of the invention comprises multiple reflection pixels for display through use of reflected light, and multiple self-display pixels for display through use of transmitted light or self-emitted light.

The invention discloses a liquid flow non-immersive measuring device and a sensing probe. The liquid flow non-immersive measuring device comprises the sensing probe and is characterized in that the sensing probe is connected with a circulator through an optical path, light emitted by a pump light source of 980nm is received by the circulator through a separator, optical signals output by the circulator is sent to a coupler through the separator, two optical signals are output by the coupler, one signal is sent to a first Faraday rotary mirror through a phase modulator, and the other signal is directly sent to a second Faraday rotary mirror; the optical signals output by the coupler are sent to a photoelectric detector, electric signals output by the photoelectric detector enter a phase carrier wave demodulating device, weak dynamic variation of the wave length of a DFB optical fiber laser is demodulated, and flow is calculated according to the variation of the wave length; the sensing probe relates to a section of asymmetric phase shifting optical fiber grating fixed on the outer wall of an oil pipe in the circumferential direction.

The invention belongs to the field of protective lighting for cultural relic, and provides a white LED spectrum acquiring method applicable to drawing color protective lighting. By the aid of the white LED spectrum acquiring method, problems of deficiency of scientific experiment WLED (white light emitting diode) spectrum acquiring methods with the lowermost color damage and incapability of accurately evaluating influence of monochromatic light on color conditions of the traditional Chinese drawing at present can be solved. The technical scheme includes that the white LED spectrum acquiring method applicable to drawing color protective lighting comprises steps of 1), manufacturing model test specimens; 2), preparing experiment light sources; 3), carrying out illumination experiment processes, to be more specific, (1) carrying out experiments in all-dark optical laboratories, (2) placing the drawing test specimens under the light sources and perpendicularly illuminating the test specimens by the aid of the light sources and (3) periodically illuminating the color test specimens; 4), carrying out parameter detection processes. The white LED spectrum acquiring method has the advantage that the white LED spectrum acquiring method is mainly applied to design and manufacture places.

A seismic isolator includes a lower guide rail having grooves on the side surfaces thereof and fitted to an upper surface of a lower plate, an upper guide rail having grooves on the side surfaces thereof and fitted to a lower surface of an upper plate in a direction criss-crossing the lower guide rail, a block body clamping at its lower part of the lower guide rail and clamping at its upper part of the upper guide rail, a large number of rollers interposed between the lower guide rail and the block body and between the upper guide rail and the block body, a large number of balls interposed between grooves of the side surfaces of the lower guide rail and the block body and between grooves of the side surfaces of the upper guide rail and the block body and a flexible member fitted between the lower surface of the upper plate and the upper surface of the lower plate.

The invention discloses a large view field array detection radar based on light flight time. The radar comprises an illumination module, a sensing module and a control module; the control module is separately connected with the illumination module and the sensing module; the illumination module transmits light rays outwards according to a preset radiation angle; the sensing module receives a reflective light ray signal according to a preset detection angle; the sensing module inputs the reflection light ray signal to the control module; and the control module is used for controlling the driveof the illumination module and the sensing module, and processing the reflection light ray signal. According to the radar provided by the invention, the different space ranges are radiated by a radiation light source, the radiation angles of the light sources are mutually remedied, and uniform illumination is achieved; multiple light flight time sensing chips are connected in series, and multipledepth sensing chips are used for simultaneously sensing scenes, so that the sensing speed of the large view field array detection radar is significantly higher than that of the scanning type laser radar, and the vibration sensitivity and waste of scanning time of the mechanical scanning type detection are avoided; the problems of limitations on the detection angle of the single-sensor system lensand on the multi-line laser radar detection speed are solved.

The invention provides a flow velocity sensor probe and a flow velocity measuring system, relating to the field of flow velocity measurement. The flow velocity sensor probe includes a flow velocity measurement segment optical fiber, a measurement optical fiber sleeve pipe, a temperature compensation segment optical fiber, a compensation optical fiber package structure and a heat insulation connection structure. The measurement optical fiber sleeve pipe sleeves the outer side of the flow velocity measurement segment optical fiber. The temperature compensation segment optical fiber is packaged at the inner side of the compensation optical fiber package structure. The measurement optical fiber sleeve pipe and the compensation optical fiber package structure are fixedly connected to the heat insulation connection structure. The temperature compensation segment optical fiber goes through the heat insulation connection structure to be coupled with the flow velocity measurement segment optical fiber. The heat insulation connection structure is made of a heat insulation material. Compared with the prior art, according to the flow velocity sensor probe provided by the invention, the measurement segment optical fiber and the compensation segment optical fiber are separated by the heat insulation connection structure, the temperature fields of the two optical fibers do not interfere with each other, the accuracy and precision of a measurement result are improved, the overall structure is stable, the mechanical property is good, and the flow velocity sensor probe is suitable for many flow velocity monitoring sites.

The invention discloses a passive mechanical circulating pressure release executing device. The passive mechanical circulating pressure release executing device comprises an upper housing and a pressure storage container. The upper housing communicates with the pressure storage container through an air duct, a pressure storage chamber and a pressure release gear box are arranged in the pressure storage container, the pressure storage chamber is provided with a pressure outlet and a piston mounting hole, a linkage reset transmission mechanism is arranged in the pressure release gear box, the linkage reset transmission mechanism is in butt joint to the piston mounting hole through a valve rod spring, and the linkage reset transmission mechanism is connected to a hole plug through the valve rod. The passive mechanical circulating pressure release executing device achieves functions of pressure relief and resetting by means of the valve rod spring, a rack spring and the linkage reset transmission mechanism, and a transmission force of an air pressure is pulled outward to the farthest stroke by means of a transmission relationship between an output rack pinion and a gear group, so that the pressure outlet is opened to achieve a purpose of quick deflation.

The invention discloses a method of realizing Bluetooth automatic connection between master and slave devices based on shared information, which includes the following steps: a master device acquires shared information of a slave device; the master device gets Bluetooth connection information of the slave device through the shared information; the master device initiates a connection request to the slave device; and the master device and the slave device authenticate each other, and Bluetooth automatic connection is completed if the master device and the slave device pass authentication. The method has the following effects: (1) before information sharing, irreversible processing is carried out to avoid the leakage of information; (2) the devices cannot be directly connected in a non-contact manner, which ensures the authenticity of information; (3) there is no mutual interference between slave devices; (4) the method is simple and intuitive, and convenient to operate; (5) the process complexity for repeated use is reduced; (6) the master and slave devices authenticate each other based on shared information instead of a key; (7) retrieval information is set to protect shared information; and (8) the method is implemented through a process or software without increasing cost.