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45results about How to "Accurate signal acquisition" patented technology
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Hydraulic cylinder device and hydraulic cylinder behavior control system with same
InactiveCN101749301AAccurate signal acquisitionReliable signal acquisitionFluid-pressure actuator componentsHydraulic cylinderControl system
The utility model relates to a hydraulic cylinder device and a hydraulic cylinder behavior control system with same. The hydraulic cylinder device comprises a cylinder body, a piston and a piston rod, wherein the piston moves in the cylinder body, one end of the piston rod is connected with the piston, and the other end thereof extends out of the cylinder body; and a plurality of signal through holes which are longitudinally arranged along the cylinder body to divide a piston stroke into a plurality of stroke sections are formed on the wall of the cylinder body. The hydraulic cylinder device also comprises a plurality of pressure sensors arranged corresponding to the signal through holes. Compared with the prior art, the invention can conveniently meet the real-time monitoring of the preset section position of the total stroke of the piston, and has the advantages of low cost, good generality and strong anti-interference capacity, and is favorable for giving full play to the powerful data-processing operation capacity of an intelligent controller, and the like.
Owner:CIMC VEHICLES (GROUP) CO LTD +1
Device and method for detecting and elevating contact network state based on electrical capacity analysis
InactiveCN102616156AImprove flowJudgment method is intuitiveTrolley linesSignal conditioning circuitsContact network
The invention discloses a device and a method for detecting and evaluating the contact network state based on electrical capacity analysis and relates to a method for detecting and evaluating the electrified railway contact network state. The technical scheme adopted by the invention is as follows: the method comprises the following steps: acquiring voltage and current signals: converting the voltage and the current of the contact network to obtain a signal by an optical electronic transformer, converting the obtained signal into an electrical signal by a photoelectric detector, feeding the electrical signal into a signal conditioning circuit and carrying out amplification, filtering, A / D (Analogue / Digital) conversion, isolation and digital sampling on the electrical signal; processing the voltage and current signals: extracting a high-frequency component of the voltage and current signals, which is obtained by sampling, and carrying out computing processing on the high-frequency component; and estimating the contact network: according to the calculation result, evaluating the work state of the contact network and giving out an evaluation result. According to the method and the device disclosed by the invention, the detecting and evaluating result is accurate, the state of the contact network can be better grasped and the state overhaul of the contact network is facilitated to be realized.
Owner:EAST CHINA JIAOTONG UNIVERSITY
Signal acquisition device for knocking scanning-type bridge damage detection
ActiveCN103063746AMeet the needs of damage detectionComprehensive collectionMaterial analysis using acoustic emission techniquesVehiclesEngineeringDamage detection
The invention discloses a signal acquisition device for knocking scanning-type bridge damage detection. The signal acquisition device comprises a mobile trolley which can move on a bridge needing to be detected, a signal acquisition device which is arranged on the mobile trolley and is used for acquisition of a knocking load response signal transmitted to the mobile trolley from the bridge needing to be detected, and a signal collection device which is connected to the signal acquisition device and is used for collecting the response signal acquired by the signal acquisition device. The signal acquisition device for knocking scanning-type bridge damage detection can realize comprehensive, real-time, effective and accurate acquisition of the bridge response signal thereby satisfying knocking scanning-type bridge damage detection requirements.
Owner:CHINA ROAD & BRIDGE +1
Detection method of vital signs during sleeping
ActiveCN109907729AAccurate detection of sleep statusRapid responseRespiratory organ evaluationSensorsElectricityEngineering
The invention provides a detection method of vital signs during sleeping. The detection method is based on a sleep detection device which comprises a piezoelectric thin film sensor, and the piezoelectric thin film sensor collects pressure signals when a person sleeps. The method includes following steps: performing power amplifying and filtering on the pressure signals; setting sampling frequency,and performing AD sampling on processed pressure signals; selecting a time period, and processing the pressure signals collected within the time period to serve as reference signals for judging whether a user has heart beat, respiration, snoring and body movement; dividing the pressure signals into four branches, namely heart beat signals, respiration signals, snoring signals and body motion signals; according to the heart beat signals, the respiration signals, the snoring signals and the body motion signals, respectively calculating heart beat data, respiration data, snoring data and body motion data; according to the heart beat data, the respiration data, the snoring data and the body motion data, acquiring the vital signals of the person.
Owner:青岛中物云传智能科技有限公司
Automatic calibration method for engine knock
InactiveCN109973280AAccurately distinguish and analyze work shock situationAdapt to precise control requirementsMachines/enginesAdvancing/retarding ignitionExternal combustion engineFilter analysis
The invention discloses an automatic calibration method for engine knock. The automatic calibration method for engine knock comprises the steps of carrying out knock control matching by adopting engine knock intelligent-calibration, self-adaption and self-studying technologies; collecting the following equipment running data: temperature, rotate speed, oil consumption condition and ignition anglecondition; storing the data, and carrying out secondary analysis; and intelligently optimizing knock calibration. By adopting the technical scheme, the complex control logics such as cylinder detection, data analysis and processing are greatly simplified; and along with the development of a knock sensor technology and an electronic technology, the accuracy in signal acquisition is realized, and irrelevant noise can be eliminated through filter analysis in different ways and detonation sensor feedback signal processing in different ways, so that the engine work knock situation can be accuratelydiscriminated, control parameters such as advance angle of ignition are dynamically adjusted, the accuracy control requirement of a high-speed internal combustion engine is met, and the whole intelligent calibration process is realized.
Owner:HANTENG AUTOMOBILE CO LTD
Accurate acquisition device and method of power frequency in audio forensics
InactiveCN103048539AAccurate collectionAccurate acquisition device, including frequency acquisitionFrequency measurement arrangementAudio forensicsTransformer
The invention discloses an accurate acquisition device and method of power frequency in audio forensics, which belongs to the technical field of acquisition of the power frequency. The acquisition device comprises frequency acquisition points and an upper computer, wherein each frequency acquisition point comprises a precise voltage transformer depressurization module, a signal conditioning module, an anti-alias filter module, a singlechip and a wireless communication unit; and the upper computer is in wireless connection with the frequency acquisition point through the wireless communication unit. The acquisition method comprises the following steps of: (1) distributing the frequency acquisition points in each acquisition cell; (2) putting data obtained through sampling into a buffer memory for buffering; (3) transmitting to the upper computer through the wireless communication unit; (4) putting the received data into a DMA (Direct Memory Access) buffer area through the upper computer, and carrying out frequency calculation; (5) transmitting the data to a database server; and (6) storing the data to the database server. According to the acquisition device and method, power frequency signals can be accurately converted and stored, and a prefecture level power frequency database is quickly established.
Owner:NANJING INST OF TECH
Curved-surface deformation manipulator facing to flexible-film transfer
ActiveCN106737799AAvoid damageHigh precisionProgramme-controlled manipulatorGripping headsPositive pressureEngineering
The invention belongs to the field of material transport and transfer related equipment and discloses a curved-surface deformation manipulator facing to flexible-film transfer. The curved-surface deformation manipulator comprises a linear drive assembly, a seal assembly, an air pressure assembly and an adjustable sliding assembly; the linear drive assembly is used for providing for up-down drive displacement and is a main drive mechanism that forms a free curved surface; the seal assembly comprises an upper connecting plate, a lower connecting plate, a sealing film, a breathable film and the like and cooperates with the air pressure assembly to form a positive pressure chamber and a negative pressure chamber, and function of the manipulator in adsorbing and releasing a flexible film sequentially is correspondingly realized; the adjustable sliding assembly is used for adjusting relative positions among multiple linear actuators. Accordingly, the entire process that the flexible film is transferred to the target curved surface form a plane substrate can be efficiently realized; the curved-surface deformation manipulator has the advantages of compact structure, convenience in control, high precision, less damage to the film and the like, and more adaptability and free adjustment capacity are achieved in formation of the free curved surface.
Owner:HUAZHONG UNIV OF SCI & TECH
Lincoln distributed optical receiver array
InactiveUS20050169646A1Easy to operateAccurate signal acquisitionElectromagnetic receiversSensor arrayOptical detector
An array of spatially-separated optical detectors is configured to receive a free-space optical communication signal from a remote source. Each optical detector of the array includes an optical system and an array of light sensors. The optical system collects a portion of light received from the remote source and directs it toward the array of light sensors. The array of light sensors, in turn, converts the collected portion of light to one or more electrical, detected signals corresponding to the collected portion of light. A processor is coupled to the array of spatially-separated optical detectors, receiving the detected signals and combining the received signals to obtain information borne by the received optical communication signal.
Owner:MASSACHUSETTS INST OF TECH
Large-cylinder-diameter gas engine turbulent jet ignition system, gas supply system and method
ActiveCN113982739AShorten the propagation distanceAids in lean burnInternal combustion piston enginesGaseous engine fuelsFlame propagationGas supply
The invention discloses a large-cylinder-diameter gas engine turbulent jet ignition system, a gas supply system and method, and the turbulent jet ignition system comprises a pre-combustion chamber which forms a spatial umbrella-shaped distributed ignition source in a main combustion chamber through a plurality of fluid passages; a sparking plug which is arranged on the pre-combustion chamber and used for igniting mixed gas in the pre-combustion chamber; a pre-combustion chamber gas injection valve which is connected with the pre-combustion chamber through a gas conveying pipeline and a one-way valve and used for injecting auxiliary gas into the pre-combustion chamber in a timed and quantitative mode. The gas supply system comprises a controller and the turbulent jet ignition system, and the controller is used for controlling gas supply of the pre-combustion chamber and fuel supply of the gas inlet channel of the main combustion chamber. Accurate stratified combustion can be formed between the pre-combustion chamber and the main combustion chamber; turbulent jet flow generated by mixed combustion in the pre-combustion chamber can form umbrella-shaped ignition source distribution in the main combustion chamber, the flame propagation distance is effectively shortened, and the combustion speed of mixed gas in the main combustion chamber is increased.
Owner:SHANDONG UNIV
Anti-theft door lock
InactiveCN101581170ASignal acquisition is stableAccurate signal acquisitionNon-mechanical controlsElectric permutation locksMicrocontrollerMicrocomputer
The invention discloses an anti-theft system comprising an infrared photoelectric detection circuit which is used for measuring whether a correct key is inserted into a door lock or not and plugging and pulling-out times and transmitting a detection signal to a single chip microcomputer. A control circuit of the single chip microcomputer processes collected information and transmits corresponding control command to an alarm module. The alarm module comprises two functions of voice alarm and buzzer alarm. When an unlocking person inserts an incorrect key into a lockhole, the control circuit of the single chip microcomputer plays voice alarm information after collecting the information; and if wrong unlocking operation continues to be executed, a buzzer alarm signal is transmitted. In the invention, signal receiving is realized by an infrared photoelectric switch, the anti-jamming capability is strong, the alarm part is more humanized, the whole design structure is simple, the practicability is strong, and the invention is close to life and provides reference for the intelligent development of the house.
Owner:TIANJIN POLYTECHNIC UNIV
Gas drilling shaft bottom near-bit continuous impact focus nipple
The invention relates to a gas drilling shaft bottom near-bit continuous impact focus nipple, comprising a nipple body, a cylinder body, a piston (3) and a gas distribution device, wherein the cylinder body is arranged in a shell (1), the piston (3) is arranged in the cylinder body, a lower gas inlet passage (8) is formed between the cylinder body and the shell (1), a lower gas chamber (2) is formed between the lower end of the piston (3) and the inner wall of the shell (1), the lower gas inlet passage (8) is communicated with the lower gas chamber (2), an upper gas inlet passage (9) is formed at the bottom (7) of the cylinder body, an upper gas chamber (6) is formed between the upper end of the piston (3) and the cylinder body, the upper gas inlet passage (9) is communicated with the upper gas chamber (6), and the gas distribution device is arranged at the upper part of the cylinder body. According to the focus nipple, a focus in seismic exploration is applied to a shaft bottom near a bit, a focus linear (Chirp) scanning technology can be combined with a Mini-SOSIE technology, and the focus excites the ground to generate linear scanning pulse signals through a pulse coding technology, so that the excitation quality of seismic wave is improved.
Owner:SOUTHWEST PETROLEUM UNIV
Detection method and system for elevator load
ActiveCN103387165AImprove operational safetyAccurate signal acquisitionElevatorsControl engineeringControl theory
The invention discloses a detection method and system for an elevator load. The method comprises the steps of taking a no-load signal and a rated load signal of an elevator as reference signals; obtaining the real-time load signal of the elevator; respectively comparing the values of the reference signals and the ream-time load signal; and determining the load condition of the elevator according to the comparing result of the reference signals and the real-time load signal of the elevator. The system comprises a storage unit, a real-time load signal acquiring unit, a comparing unit, an analysis unit and an output unit; the storage unit and the real-time signal acquiring unit are electrically connected with the comparing unit respectively; the comparing unit is electrically connected with the analysis unit electrically connected with the output unit. By adopting the detection method and system for the elevator load, the real-time load signal of the elevator is more accurate, the load condition of the elevator judged according to a logic operation result by comparing the elevator real-time load signal, the elevator no-load signal and the elevator rated load signal more accords with real condition, and the safety of the elevator operation is higher.
Owner:GUANGDONG HUANYU ELECTRONICS TECH CO LTD
Straw baling test platform
PendingCN107621365AAffect acquisition accuracyGuaranteed accuracyMachine part testingTransfer systemTest platform
The invention discloses a straw baling test platform which comprises a power transferring system, a baling device, a controller, a material conveying device and a hydraulic lifting system, wherein thepower transferring system comprises a first driving device; a torque sensor is connected between an output shaft of the first driving device and a power input shaft; a tension and pressure sensor isarranged on a connecting rod; a piston end face pressure sensor is arranged on an end face of a piston; plate type pressure sensors are arranged on all the walls of a compression chamber and a balingchamber; the torque sensor, the tension and pressure sensor, the piston end face pressure sensor and the plate type pressure sensors are all in signaling connection with the controller; the material conveying device is used for conveying the straws to a pickup device; the hydraulic lifting system is used for lifting a frame and idler wheels of the baling device. The straw baling test platform is capable of comprehensively and accurately collecting the signal, supplying a detailed base data for the research on the crop straw baling operation and supplying a more practical test data for crop straw baling.
Owner:滨州市农业机械化科学研究所 +1
Sleep detecting device
InactiveCN109480795ADetect sleep statusImprove experienceRespiratory organ evaluationSensorsEngineeringSignal processing circuits
The invention provides a sleep detecting device and belongs to the technical field of smart home. In the embodiment, the sleep detecting device comprises a sensor unit, a signal conditioning circuit and a signal processing circuit. The sensor unit comprises a sensor placed below a human body and acquires a pressure signal during sleeping of the human body, the signal conditioning circuit amplifiesand filters the pressure signal, and the signal processing circuit calculates an output signal of the signal conditioning circuit so as to obtain sleep condition data. By adopting the embodiment, thesleep state of a user can be accurately detected, response is quick, the precision is high, the sleep detecting device is comfortable to use, and user experience is improved.
Owner:青岛中物云传智能科技有限公司
Multi-parameter sensing bin for ocean, monitoring method and manufacturing method of sensing bin
ActiveCN111238554AWidely distributedAccurate signal acquisitionConverting sensor output opticallyEngineeringFiber interferometer
The invention discloses a multi-parameter sensing bin for oceans. The multi-parameter sensing bin is provided with three optical fiber Fabry-Perot interferometer cavity structures which are connectedin series, parameters such as temperature, pressure, salinity and the like of a seabed point to be measured can be simultaneously measured, that is, multi-parameter measurement can be performed. Basedon the high sensitivity of the Fabry-Perot interferometer, the high-precision measurement can be realized, the planning is reasonable, the structure is compact, the stability is good, the manufacturing and maintenance cost is low, and compared with the traditional measurement mode, the method has more advantages and has better application prospect. Meanwhile, the invention provides a multi-parameter monitoring method based on the submarine optical cable. The sensing bin is used as a platform to monitor multiple physical parameters of the ocean on line in real time and can adapt to the complexocean environment of the seabed, the submarine optical cable has the dual functions of communication and power supply, high-speed signal return and continuous power supply can be provided for a sensing system. In addition, the optical cable is wide in distribution, and distributed monitoring is more beneficial to achieving networked monitoring. Meanwhile, the manufacturing method is easy to implement, and it can be guaranteed that signals acquired by an external sensing module interferometer are accurate.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Direction control device of intelligent exercise bicycle
ActiveCN103446707AEasy to makeReduce manufacturing costMovement coordination devicesCardiovascular exercising devicesEngineeringTorsion spring
The invention discloses a direction control device of an intelligent exercise bicycle. The device comprises a handle chuck combination, a rotating shaft combination, a fixed seat combination, a rotating piece combination, a first torsional spring and a second torsional spring, wherein the rotating shaft combination comprises a fixed part and a rotating shaft; the handle chuck combination is pivoted with the rotating shaft combination; the first torsional spring is arranged at the pin jointing part of the handle chuck combination and the rotating shaft combination; the fixed seat combination is sleeved in the rotating shaft; the rotating piece combination is fixedly arranged at the tail end of the rotating shaft; the second torsional spring is sleeved in the rotating shaft and located between the fixed seat combination and the rotating piece combination; a downward first convex column is arranged in the fixed seat combination; an upward second convex column is arranged on the rotating piece combination; the first and second convex columns are arranged between two outward bended ends of the second torsional spring side by side. The direction control can provide a 360 degrees all-around steering action, can be reset immediately after a steering force is eliminated, and has the characteristics of simplicity in manufacture, low manufacturing cost, easiness in realization, accuracy of collected signals, high sensitivity and convenience in operation.
Owner:舒周文
Signal acquisition system for injection molding machine and signal acquisition method
InactiveCN107471576ARealize acquisitionRealize wireless collectionTransmission systemsAnalog signalEngineering
Owner:HUNAN UNIV AISHENG AUTO TECH DEV
Multi-frequency impedance imaging system
InactiveCN107320101AReduced measurement timeImprove responseDiagnostic recording/measuringSensorsPhysical modelEngineering
The invention discloses a multi-frequency impedance imaging system. The system mainly performs imaging according to different impedances displayed by biological tissue under various frequencies. The system comprises a data collecting card, a voltage to current circuit, a multi-way switch circuit, a to-be-tested object, a signal amplification circuit and a computer. The system is of a virtual instrument structure and is formed by combining a LabVIEW platform with the data collecting card and pheripheral hardware, the data collecting card with the high precision is used, the system testing precision and stability are improved, the advantages of flexibility and convenience of the virtual instrument technology building system are brought into full play, and the system is convenient to expand. Drive signals adopt mixing signals stacked by multiple frequency sinusoidal signals, the multi-frequency signals are injection into a physical model at a time, measured voltage signals are processed to obtain voltage information under each frequency, and therefore the system imaging speed is increased.
Owner:NANJING UNIV OF POSTS & TELECOMM
Flexible film tension deviation rectification control system
The invention belongs to the related field of material conveying and quality monitoring, and discloses a flexible film tension deviation rectification control system which comprises a tension measuring roller, a deviation rectification frame, a driving mechanism, a driving motor and a deviation rectification controller, wherein the tension measuring roller is jointly formed by a total tension detection unit and a tension distribution detection unit which are connected into a whole horizontally, and measures to obtain total tension and tension distribution signals during conveying of the flexible film; the deviation rectification controllers calculates a control voltage corresponding to output based on the tension distribution signal and controls the driving motor to rotate by a corresponding corner, so as to drive the driving mechanism to rotate synchronously; and the deviation rectification frame converts the rotating movement of the driving mechanism into the deviation rectification action of the tension measuring roller, thus completing the overall deviation rectification process. According to the invention, not only can synchronous high-precision measurement on total tension and tension distribution be realized, but also deviation rectification control can be realized based on the tension distribution signal, and correspondingly, the quality and precision of final deviation rectification control can be remarkably improved.
Owner:HUAZHONG UNIV OF SCI & TECH
Portable electroglottograph speech collecting device for far-field human-computer interaction
InactiveCN108682427ASimple structureReduce or avoid noise impactSpeech analysisShort range communication serviceGlottisBackground noise
The invention discloses a portable electroglottograph speech collecting device for far-field human-computer interaction. In far-field speech human-computer interaction, through the complex combinationof software and hardware and an artificial intelligence algorithm, the effects of background noise, reverberation, echo and the like can be effectively solved in a complex environment. Glottal excitation information is obtained by using electroglottograph, thus a target speech is separated, the noise influence during a transmission process can be effectively removed, and the interference betweendifferent kinds of information is removed. The portable electroglottograph speech collecting device comprises a signal collecting portion, a signal processing portion and a signal transmitting portion. The electroglottograph speech collecting device of the invention has a simple structure and is convenient to carry, high-frequency weak voltage is used, the signal acquisition is more accurate, thedevice can cooperate with other devices, speech features can be extracted well, the influence of noise on a speech when the speed is transmitted in the air is reduced or avoided, and the portable electroglottograph speech collecting device has high detection accuracy and wide application.
Owner:BEIHANG UNIV
Portable multi-lead electrocardio acquisition system and method based on capacitive coupling electrode
PendingCN113180676ARealize long-term collectionSimple structureDiagnostic signal processingSensorsCapacitanceEcg signal
The invention discloses a portable multi-lead electrocardio acquisition system and method based on a capacitive coupling electrode, a coupling electrocardio electrode is not in direct contact with the skin, a gap capacitance is formed between the coupling electrocardio electrode and the skin to couple electrocardio signals, a signal processing unit is utilized to obtain common-mode interference signals according to received signals, and compared signals are converted by an A / D conversion unit and are output by a transmission unit, and meanwhile, common-mode interference signals led out by the signal processing unit are superposed by a right leg driving unit and are fed back to a human body through an electrode by a reverse-phase amplification circuit to form feedback, an acquisition mode based on the capacitive coupling electrode is adopted, the multi-lead electrocardio acquisition system can realize long-term acquisition of multi-lead electrocardiosignals, does not need assistance of conductive adhesive in the use process, and is simple in structure and accurate in signal acquisition. A double-layer PCB is a circular PCB, a concentric shielding ring arranged at an interval with the coupling electrocardio electrode is arranged on the outer ring of the coupling electrocardio electrode, the gap capacitance can be formed between the coupling electrocardio electrode and the skin to couple electrocardio signals, and the coupling electrocardio electrode does not need to be attached to the skin.
Owner:XI AN JIAOTONG UNIV
Light-operated electronic lock
The invention provides a light-operated electronic lock. The light-operated electronic lock comprises a body, and a control module, a motor, a transmission mechanism and a locking head in the body, wherein a photosensitive receiving module is arranged on the body; a light transmitter is matched with the photosensitive receiving module and comprises a portable box, a LED lattice screen and a control unit; and the configuration manner and space of light sensors on the photosensitive receiving module are identical to the configuration manner and space of LED lights on the LED lattice screen. Thelight emitter is inserted into the photosensitive receiving module; the module compares whether a pattern or text presented by the lattice screen is correct as a secret key, and controls the direct-current motor to rotate if the secret key is correct; so the locking head can retract into the body, thereby realizing unlocking.
Owner:HUZHOU TEACHERS COLLEGE
Electrical energy power quality disturbance automatic identification method and system based on information fusion
InactiveCN100504846CRealize intelligent identificationOvercome the disadvantage of strong subjectivityData processing applicationsData acquisition and loggingPower qualityNerve network
The invention is a automatic identification method and system based on the power quality disturbances of the information fusion, characterized by: collecting the transient and steady-state measurement datum associated with the power quality disturbances from the Power Quality Monitoring System and other automation systems, disposing of noise such as pretreatments; Using the method combining Fourier analysis, small wave multi-resolution decomposition and analysis of the correlation functions, distilling the from the disturbance datum, establishing the disturbance eigenvector, and as a the input characteristic vector of three probabilistic neural networks, realizing the mapping from a feature space to the disturbance space; the output of three probabilistic neural networks regarded as the evidence body of independent of each other, realizing Information Fusion by the use of D-S evidence theory, obtaining recognition results. This invention through the correct selection and extraction of disturbance eigenvectors, can input neural network parallel in classification and reflect the disturbance situation from the various aspects, thus effectively enhancing the correct identification rate of disturbance, a first step in Intelligent Recognition of the power quality disturbances.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
Simulation steering treadmill for VR (virtual reality) equipment
ActiveCN114681862AEasy to controlAccurate signal acquisitionVideo gamesMovement coordination devicesClassical mechanicsElectric machinery
A simulation steering treadmill for VR equipment comprises a running belt, the running belt can be installed between two first sliding rails in a front-back moving mode, the first sliding rails are installed on a rotating disc driven by a rotating motor, and the original point position of the running belt is located over the circle center of the rotating disc; the steering treadmill further comprises a steering ring, and a plurality of pressure or displacement sensors are installed on the upper end face of the steering ring. The steering ring comprises a left half ring and a right half ring which can be combined and detached. The running belt is used for simulating advancing and retreating, the steering ring is used for collecting the rotating direction of a user and controlling the rotating direction of the running belt, the steering ring surrounds the running belt in the center, the user body feeling of normal steering and the body feeling of advancing and retreating are truly simulated, signal collection is accurate, and virtual world control is accurate.
Owner:CHONGQING COLLEGE OF ELECTRONICS ENG
Signal acquisition method of rotation angle of rotating member with V-shaped notch
ActiveCN103206916AAccurate Signal AcquisitionPrecise rotationUsing electrical meansComputational physicsMechanical engineering
A signal acquisition method of the rotation angle of a rotating member with a V-shaped notch includes: the V-shaped notch area where the V-shaped notch area of the rotating member (5) is arranged is defined as a blind area (3), a magnetic grid scale (2) is stuck on the periphery of the rotating member with the V-shaped notch and is provided with scale marks, a main positioner (4) and an auxiliary positioner (8) are symmetrically arranged on both sides of the magnetic grid scale, the main positioner is used for fixing a main magnetic grid sensor (1), the auxiliary positioner is used for fixing an auxiliary magnetic grid sensor (7), and the main magnetic grid senor and the auxiliary magnetic grid sensor are configured in a 180-degree symmetry mode. The complementary magnetic grid sensors can subject the magnetic grid scale on the rotating member with the V-shaped notch to signal acquisition, so that the monitoring of the rotation angle of the rotating member with the V-shaped notch can be achieved, and the signal acquisition is accurate and reliable. The signal acquisition method of the rotation angle of the rotating member with the V-shaped notch has a great assisting effect on controlling the rotation angle of the rotating member with the V-shaped notch through a computer and is particularly significant to super-huge type and rotation-angle precision-required rotating members with V-shaped notches.
Owner:LUOYANG BEARING RES INST CO LTD
Bone conduction microphone and handset
InactiveCN107172520AAvoid signal lagAvoid problems such as misalignmentMicrophonesLoudspeakersSound sourcesEngineering
The invention provides a bone conduction microphone which comprises a vibration collector, a pressure sensor and a signal processor; the vibration collector comprises a signal collection part and a signal transmission part; the signal transmission part is in contact with the pressure sensor; and the signal transmission part can transmit signals collected by the signal collection part to the pressure sensor. The bone conduction microphone has the beneficial effects that: as sound signals can be directly transmitted to the signal sensor through the signal transmission part, problems such as signal lag and signal inaccuracy caused by a traditional airbag which transmits the sound signals through air are avoided; signals can be collected more precisely and signal error caused by air leakage of a vibration cavity can be reduced or removed; the bone conduction microphone is more beneficial to signal collection and data analysis, the data are more precise, calculation of the collected data can be finished by using fewer processor resources, and the data error and power consumption are reduced; and collection of sound source signals is realized more precisely.
Owner:BEIJING JINRUIDELU TECH
Alarm for finishing infusion
InactiveCN101185782BAccurate signal acquisitionImprove anti-interference abilityInfusion devicesAlarmsInterference resistanceComputer module
The invention discloses an alarm device of the termination of transfusion. The invention consists of two metal clip electrodes and a circuit. The first metal clip clamps the exposed part of a transfusion needle and is led out to be connected with one end of a capacitance-voltage transformation module by a guide wire, so as to form one electrode of a capacitance sensor; the second metal clip clamps a drip tube of the transfusion needle and is led out to be connected with the other end of the capacitance-voltage transformation module by the other guide wire, so as to form the other electrode ofthe capacitance sensor, further to constitute the capacitance sensor. The invention makes use of the electrical conductivity of liquid medicine to make the variable-polar distance capacitance sensor;when in transfusion process till the end of the transfusion, the media in the drip tube changes from liquid medicine to air, the distance between the first electrode and the media is rapidly increased and the capacitance changes correspondingly. Therefore, the capacitance sensor can cause great change of capacitance at the end of transfusion; the collected capacitance signal is input into a detection circuit through the guide wire, and then the invention can emit sound and light alarm. The invention adopts the non-contact capacitance sensor to collect the signal of the termination of transfusion, and the invention has accurate signal collection, stability, reliability and strong interference resistance.
Owner:ZHEJIANG SCI-TECH UNIV
Signal Acquisition Device for Tapping and Scanning Bridge Damage Detection
ActiveCN103063746BMeet the needs of damage detectionComprehensive collectionMaterial analysis using acoustic emission techniquesVehiclesDamage detectionSignal acquisition
The invention discloses a signal acquisition device for knocking scanning-type bridge damage detection. The signal acquisition device comprises a mobile trolley which can move on a bridge needing to be detected, a signal acquisition device which is arranged on the mobile trolley and is used for acquisition of a knocking load response signal transmitted to the mobile trolley from the bridge needing to be detected, and a signal collection device which is connected to the signal acquisition device and is used for collecting the response signal acquired by the signal acquisition device. The signal acquisition device for knocking scanning-type bridge damage detection can realize comprehensive, real-time, effective and accurate acquisition of the bridge response signal thereby satisfying knocking scanning-type bridge damage detection requirements.
Owner:CHINA ROAD & BRIDGE +1
Full-automatic locking intelligent ground lock and control method thereof
InactiveCN111945613AOptimize the parking processThe judgment result is accurateIndication of parksing free spacesTraffic restrictionsMicrowaveRemote control
The invention discloses a full-automatic locking intelligent ground lock and a control method thereof, and belongs to the technical field of ground lock control. To solve the problems that in the prior art, a mechanical ground lock needs to be manually operated to get off a vehicle, a ground lock with Bluetooth remote control needs to carry a remote controller, the operation mode is complex, muchtime is consumed, and the portability is not enough, the invention provides an intelligent ground lock which comprises a ground lock device, a first sensor, a second sensor, a wireless module, a control module and a power module. The first sensor, the second sensor and the wireless module send signals to the control module, and the control module controls the ground lock device according to the received signals. Through comparison detection of the microwave mobile sensor module and the infrared sensor module, the judgment result of the infrared sensor module is more accurate. The device is a full-automatic device, and a ground lock does not need to be manually or remotely controlled. A car owner can park and take a car conveniently, and car parking and taking time is shortened.
Owner:安徽工大信息技术有限公司 +1
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