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433results about How to "No mutual interference" patented technology

Method and apparatus of real-time automatic calibration and compensation for beam drift

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.
Owner:ZHEJIANG UNIV

Mobile phone multi-station parallel testing device and realization method thereof

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.
Owner:CHENGDU BOTOVISION TECH CO LTD

Method for eliminating null shift of micro-electromechanical system (MEMS) gyroscope

InactiveCN103217176AReduce output noiseRealize digital outputMeasurement devicesGyroscopeAngular velocity
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.
Owner:南京智真电子科技股份有限公司

Rapid sampler of micro polycyclic aromatic hydrocarbon in water based on electrospinning nano-fiber membrane

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.
Owner:BEIJING NORMAL UNIVERSITY

Method for radio frequency identification of mobile communication terminal and equipment thereof

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.
Owner:INVENGO INFORMATION TECH

Automatic separator of coal gangue

ActiveCN101637765BNo mutual interferenceSolve the technical problems of poor sorting effectSortingConveyor partsNuclear radiationThermodynamics
The invention relates to an automatic separator of coal gangue, which comprises a raw material feeding copper, a coal receiving copper, a gangue receiving copper, a conveying-belt conveyor, an identification and separation controlling mechanism and an executing mechanism, wherein the conveying-belt conveyer is arranged among the raw material feeding copper, the coal receiving copper and the gangue receiving copper; the identification and separation controlling mechanism comprises a single-energy gamma ray source, an X-ray sensor, a measure and control instrument and an ultrasonic transmitter-receiver; the single-energy gamma ray source is arranged below a conveying belt, the X-ray sensor is arranged above the conveying belt and corresponds to the single-energy gamma ray source, the measure and control instrument is electrically connected with the X-ray sensor, and the ultrasonic transmitter-receiver is arranged above the conveying belt and electrically connected with the measure and control instrument; the executing mechanism is a high-frequency air valve arranged above the coal receiving copper and the gangue receiving copper; and the valve port of the high-frequency air valve is arranged towards a throwing track of coal and gangue. As the single-energy gamma ray source is adopted, only one nuclear radiation material exists, and only one spectral line is radiated, the mutualinterference among a plurality of spectral lines can not be generated; and the invention has accurate measurement and good separation effect.
Owner:GREAT DRAGON RISING ELECTROMECHANICAL TECH BEIJING

High sensitive multipath SF6 on-line leak detector and detection method thereof

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.
Owner:KUNSHAN HEZHI ELECTRICAL EQUIP

Direct current metering device

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%.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for detecting cigarette filter tip entrapping ammine with ion chromatograph conductance

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.
Owner:CHINA TOBACCO HUNAN INDAL CORP

White LED spectrum acquiring method applicable to drawing color protective lighting

ActiveCN106353264AFacilitate promotion and technology transferEnsure scientific consistency of testingColor/spectral properties measurementsTesting optical propertiesScientific experimentLight source
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.
Owner:TIANJIN UNIV

Large view field array detection radar based on light flight time

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.
Owner:HANGZHOU LANXIN TECH CO LTD

Flow velocity sensor probe and flow velocity measuring system

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.
Owner:LASER RES INST OF SHANDONG ACAD OF SCI

Passive mechanical circulating pressure release executing device

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.
Owner:东莞力嘉塑料制品有限公司

Method of realizing Bluetooth automatic connection between master and slave devices based on shared information

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.
Owner:神州融安科技(北京)有限公司
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