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296results about How to "Avoid disturbing influence" patented technology

Elevator with transverse flux drive

An elevator, particularly for transporting passengers, has an elevator car guided in an elevator shaft a direct drive motor. The drive motor includes an active primary part at the elevator car and a passive secondary part that is fixed in the elevator shaft and is spaced from the primary part by an air gap. In order to achieve a high power capability, the drive motor is configured as a transverse flux motor that moves the primary part linearly relative to the secondary part under the influence of an electromagnetic propulsive force. The secondary part has at least one rail made of a soft magnetic material and subdivided into a plurality of segments having a predetermined length. The segments are fixed to a wall of the elevator shaft by intermediate elements.
Owner:INVENTIO AG

Mobile communication method and radio base station

A mobile communication method according to the present invention includes the steps of: (A) notifying, from a first radio base station (MBS) to a second radio base station (FBS), scheduling information including information specifying a radio resource for a control channel through which a first mobile station (MUE) that is in communication in a first cell under the control of the first radio base station (MBS) transmits downlink control information or uplink control information, when the first radio base station (MBS) assigns the radio resource; and (B) assigning, at the second radio base station (FBS), a radio resource for a control channel through which a second mobile station that is in communication in a second cell under the control of the second radio base station (FBS) transmits downlink control information or uplink control information based on the scheduling information.
Owner:NTT DOCOMO INC

Measuring system for nA/pA electronic beam current of impulse electron accelerator

InactiveCN101470208ASolve the collection efficiency problemSolve beam measurement problemsX/gamma/cosmic radiation measurmentHigh energyElectron radiation
The invention relates to a pulse electronic accelerator nano-pico ampere electron beam flow measuring system, relating to an electronic accelerator pulse electron beam flow measuring system, in particular to the nano-pico (10-10A / cm2) micro beam flow measurement of millisecond pulse, belonging to the electron radiation environment ground simulation and test field. The pulse electronic accelerator nano-pico ampere electron beam flow measuring system is composed of a novel inclined-bottom faraday cup, three coaxial cables and a nano-pico level current amplifier. The measurement result can be obtained by oscilloscope or data acquisition card. The inclined-bottom faraday cup electron collection system resolves the collection efficiency problem of high energy electrons (MeV), to improve collection efficiency. The adopted three coaxial cables can reduce the interference of electromagnetic field. The nano-pico ampere level current amplifier resolves the stable current linear amplification problem under electron radiation, and converts weak current signals to voltage signals, thus being convenient for data acquisition of oscilloscope or data acquisition card. The invention resolves the measurement problem of nano-pico ampere pulse electron beam flow, to confirm the accuracy, real-time property and easy use of measurement.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH

Method for resolving and determining satellite counterglow oriented object posture for effectively avoiding ground gas light influence

The invention discloses a method for determining a satellite counterglow oriented object posture based on double-vector azimuth information by using a resolving method, in particular an object posture determining method for making a star sensor effectively avoid ground gas light influence. The method can ensure an object concerned by a satellite posture orientation, and at least one star sensor is available in the whole process. The satellite counterglow oriented object posture is determined by finding a condition of making the star sensor furthest avoid the ground gas light interference influence, combining the counterglow orientation requirement and using the simple resolving method of double-vector posture fixation. The method solves the problem of a method which must combine a star rotating trial to establish the proper target posture, is favorable for reducing and controlling the complexity, cost and risk, and overcomes the defects that the conventional method cannot perform off-line pre-design and previously avoids the ground gas light interference influence.
Owner:AEROSPACE DONGFANGHONG SATELLITE

Method for recognizing zebra crossing and measuring zebra crossing distance based on line-by-line scanning

The invention discloses a method for recognizing a zebra crossing and measuring the zebra crossing distance based on line-by-line scanning. The method for recognizing a zebra crossing comprises the following steps: constructing a wavelet function template containing an odd wavelet function and an even wavelet function; carrying out line-by-line scanning on an image to be detected, and respectively carrying out convolution operation on grey scale value vectors of all pixel points in each scanning line with the odd wavelet function and the even wavelet function; defining a response function formula, and calculating response function vectors corresponding to all the pixel points in each scanning line in accordance with the formula; and recognizing the zebra crossing in accordance with response function values and a preset threshold. After the zebra crossing is recognized, by calibrating the distance between an imaging device and the image formed by the imaging device in advance, the distance from the scanning line first detecting the zebra crossing to the imaging device can be obtained, thereby realizing the measurement of the zebra crossing distance. The method recognizes the zebra crossing based on the line-by-line scanning of the image by using the wavelet template, and has the advantages of good anti-jamming ability, high recognition accuracy and high recognition speed duringzebra crossing recognition.
Owner:QINGDAO UNIV OF SCI & TECH

Outer conical surface type electrostatic spinning sprayer assisted by airflow

The invention discloses an outer conical surface type electrostatic spinning sprayer assisted by airflow, and belongs to thee field of electrostatic spinning. The device comprises a fiber receiving plate, an outer conical surface airflow guide tube, a machine head, a screw, a positioning nut, a material barrel, a material barrel fixing block, a heating ring, a temperature sensor, a grounding electrode, a high-voltage electrostatic generator and the like, flux is evenly distributed to the conical surface sprayer through a flow channel on the outer wall of the airflow guide tube, a flux film naturally thins in the forming process under the action of gravity and adhesive power, the flux forms a Taylor cone at the tip end of the outer conical surface under the action of high-voltage static, and therefore jet flow spinning is formed. Due to the fact that the flux film thins, the diameters of fibers can be effectively reduced, the fibers are further stretched under the action of high-speed airflow, fiber bundles are made to converge inwards due to internal and external pressure difference formed by the high-speed airflow, the density distribution of the fibers is effectively improved, the device can also be used for eliminating interference of the high-speed airflow on the flux film, and the diameters of the fibers can be more uniform.
Owner:BEIJING UNIV OF CHEM TECH

System and method for multi-unmanned boat collaborative formation under complex sea condition

The invention discloses a system and a method for a multi-unmanned boat collaborative formation under a complex sea condition. The system comprises a cooperative control center, a wireless transmission module, a single-boat sea condition monitoring module, a single-boat environment sensing module, a single-boat GPS / IMU module, a single-boat navigation obstacle avoidance module and a single-boat control module. The cooperative control center sends instructions to all unmanned boats according to collaborative formation task requirements and sea wave conditions at the positions of all unmanned boats. The information interaction between unmanned boats and the control center is realized through the wireless transmission module. The GPS / IMU module and the environment sensing module respectivelygive out the position attitude information and the obstacle information of each boat in real time. The navigation obstacle avoidance module and the control module are used for controlling the unmannedboats to safely and effectively complete collaborative formation tasks. The sea condition monitoring module calculates the actual sea wave level through information monitored by a navigation radar. The system is reliable and reasonable. Based on the system and the method, the requirements of the actual formation tasks of a multi-unmanned boat collaborative formation can be met on the premise thatthe safety requirement is met.
Owner:SHANGHAI UNIV

Synchronous hue shift conversion method and three-dimensional appearance measurement system thereof

The invention provides a synchronous hue shift conversion method, a method and a system thereof for measuring three-dimensional appearance. In the invention, a colored fringe image of an object is obtained by using a colored structured light, one hue information of the colored fringe image is obtained from a hue saturation intensity (HSI) model of the colored fringe image, and finally, the hue information is converted into one hue phase change information. The hue phase change information is used to reconstruct the three-dimensional appearance of the object by hue phase reconstruction. Since the colored structured light comprises multiple colored lights having phase difference in the spatial domain, the phase shift or phase reconstruction can be performed if a single colored image contains phase encapsulation information after multi-step phase shifts. Therefore, the processes of traditional phase encapsulation and Euler conversion are omitted, and the efficiencies for the surface reconstruction and the system measurement on the object are improved.
Owner:陈亮嘉

Mobile terminal operation mode switching method and system

The embodiment of the invention discloses a mobile terminal operation mode switching method and system. The method comprises: determining that a mobile terminal is located in a preset school area; determining current time to be preset anti-interference time, the anti-interference time comprising class time and individual study time; and starting the anti-interference mode of the mobile terminal, the anti-interference mode comprising application programs of setting the mobile terminal to be mute and shielding entertainment functions. The technical scheme solves the problem of mobile terminal influence to student study.
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD

Rotary platform type animals in-vivo multi-mode imaging detection system

The invention relates to a biological multimode picture detecting technique, wherein it comprises one PET shooting system with symmetry electrodes, one infrared transparent (reflective) shooting system, one visual light (or fluorescent) transparent (or reflective) shooting system, one ultraviolet (or X-ray) transparent (or reflective) shooting system, one rotation carrier of animal, multi-axle motion controller, multi-channel processor and computer. The carrier comprises one object platform, one frame, one constant-temperature controller, one rotator, and one XYZ three-dimension mover. The invention has multimode composition and 360degree scanning picture, with low cost.
Owner:TSINGHUA UNIV

Intelligent overhead line fault positioning and monitoring system

The invention discloses an intelligent overhead line fault positioning and monitoring system. The system is precise in fault positioning, high in precision and capable of quickly isolating faults, avoids long-time outage and improves operation reliability of a power grid. The intelligent overhead line fault positioning and monitoring system comprises a background server, a data collecting communication terminal, multiple fault indicators, a geographic information system and a distribution network automated system, wherein the background server, the data collecting communication terminal, the fault indicators, the geographic information system and the distribution network automated system are sequentially connected in a communication mode, and the geographic information system and the distribution network automated system are respectively connected with the background server. After a fault positioning and monitoring platform receives motion messages of the fault indicators, the geographic information system is accessed, all fault indicators which work and do not work on the same line are defined as upstream fault indicators and downstream fault indicators respectively, and a fault area is reduced to obtain a precisely positioned fault area by analyzing and determining the upstream fault indicators of a positioned fault area and the downstream fault indicators in the positioned fault area.
Owner:ZHUHAI GENE COSMOS ELECTRIC TECH

Display arrangements

A display arrangement particularly suitable for replacing a conventional CRT in a pilot's helmet mounted display includes a light source having a modulated output which is scanned by a scanner across a screen to produce an image. The image is transferred into the pilot's field of view by relay optics. The scanner and screen are mounted on the pilot's helmet and the light source is remote therefrom.
Owner:BAE SYSTEMS PLC

Transmittance pulsation method granule measuring method and its device

The invention discloses a method and a device for measuring particles through a transmitting pulsation method. Narrow beams are eradiated on flowing particles, and a transmitting pulsation signal is produced. A photodetector is used to check, an analog circuit is adopted to process the signal, thereby requirements for collecting speed, data collecting quantity, storing quantity, and processing quantity are lowered, data processing time is shortened, and real-time measurements can be realized. Referencing optical detection is added and used to obtain information about incident optical intensity changes and perform correcting effects, interference inferences to measuring results due to light source instability can be avoided and equal particle diameter and particle density can be tested simultaneously. Sizes of the particle diameter and beam cross-sections aren't limited to Gregory method, particle diameter range of testing particles is large, The invention can be used in many fields as scientific research, production and processing control of chemical energy, environmental protection, water quality detection, particle measurement, and the like.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Wheel suspension for a vehicle

A wheel suspension for a vehicle comprising a wheel carrier (2), a vehicle wheel (11), which is rotatably supported on the wheel carrier (2), at least one coupling member (3), which pivotally connects the wheel carrier (2) to a body (5) of the vehicle (6), at least first and second joints (7, 8), one of which is installed between the coupling member (3) and the wheel carrier (2) and other of which is installed between the coupling member (3) and the body (5). At least one measuring device is integrated into a first joint (7) and comprises at least one angular sensor (16, 18) by which the deflection (λ) of the first joint (7) is, or can be, detected. The measuring device comprises at least one acceleration sensor (23).
Owner:ZF FRIEDRICHSHAFEN AG

Elevator, particularly for transporting persons

An elevator, particularly for transporting passengers, has an elevator car guided in an elevator shaft a direct drive motor. The drive motor includes an active primary part at the elevator car and a passive secondary part that is fixed in the elevator shaft and is spaced from the primary part by an air gap. In order to achieve a high power capability, the drive motor is configured as a transverse flux motor that moves the primary part linearly relative to the secondary part under the influence of an electromagnetic propulsive force. The secondary part has at least one rail made of a soft magnetic material and subdivided into a plurality of segments having a predetermined length. The segments are fixed to a wall of the elevator shaft by intermediate elements.
Owner:INVENTIO AG

Grid fault locating system and method based on multisystem information integration

The invention relates to a grid fault locating system based on multisystem information integration. The grid fault locating system comprises a main station, a concentrator and fault indicators, wherein the fault indicators are installed on a line. The fault locating system is installed on the main station and the main station communicates with the concentrator in a GPRS communication mode. The concentrator is connected with the multiple sets of fault indicators in a radio frequency communication mode. The grid fault locating system further comprises a distribution network geographic information system, a distribution network automatic system, a fault intelligent diagnosis system and a distribution production management information system, wherein the distribution network geographic information system, the distribution network automatic system, the fault intelligent diagnosis system and the distribution production management information system are connected with the main station respectively. The main station is further connected with cellphones of emergency maintenance operators in a text message mode. The invention further relates to a grid fault locating method based on multisystem information integration adopting the system. An information integrated technology provided by multiple systems is utilized to replace single fault indicator movement information to conduct comprehensive locating on the positions where faults occur, the faults are accurately located, and reliability is high.
Owner:FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID +1

Transportable type device applicable to capturing and butt joint of underwater moving target

The invention belongs to the field of related equipment of deep sea rendezvous and docking and discloses a transportable type device applicable to capturing and butt joint of an underwater moving target. The transportable type device comprises a mechanical arm, a guide cover capturing unit, a light source guide unit and a butt joint unit, wherein the mechanical arm is designed into a multi-joint type underwater mechanical arm and can be folded and stored after operation is finished; the guide cover capturing unit is mounted at the tail end of the mechanical arm and has opening and closing functions, so that the capturing of the underwater moving target is finished; the light source guide unit is used for sensing a position and a posture of the underwater moving target; the butt joint unitis used for carrying out mutual and accurate butt joint on a butt joint socket for the underwater moving target through a plug manner. With the adoption of the transportable type device disclosed by the invention, capturing and butt joint operation of the underwater moving target can be finished under a moving state in a higher-precision manner; meanwhile, influences caused by seawater interference are effectively overcome, the capturing success rate and the capturing efficiency are remarkably improved, and the accuracy and applicability of the butt joint operation are ensured.
Owner:HUAZHONG UNIV OF SCI & TECH

Method and instrument thereof for acoustic diagnosis of automobile engine

The invention discloses a method and an instrument thereof for an acoustic diagnosis of an automobile engine, which relate to a technique for diagnosing the automobile engine, namely a method and the instrument thereof for determining whether the working condition of the engine is normal or not by using acoustic features of the sound production of the engine. The instrument comprises a sound transducer (1), an analog-digital converter (2) and a data processor (3) which are connected with one another in turn from front to back. The method and the instrument thereof can discover whether the automobile engine works normally or not during driving under the condition of not influencing road automobile running for a traffic control department to realize a non-contact diagnosis and eliminate driveway hidden dangers of a vehicle with an abnormal engine in time; besides, the method and the instrument can also provide a practical diagnostic technique for other automotive vehicles.
Owner:罗新宇

Manufacturing method of high-precision pressure sensor based on silicon-silicon bonding

The invention discloses a manufacturing method of a high-precision pressure sensor based on silicon-silicon bonding. The high-precision pressure sensor comprises a sensitive silicon wafer layer and a substrate silicon wafer layer and is characterized in that the substrate silicon wafer layer is connected to the back of the sensitive silicon wafer layer, and the sensitive silicon wafer layer and the substrate silicon wafer layer use silicon-silicon bonding process to form a pressure sealing cavity; the substrate silicon wafer layer and the sensitive silicon wafer layer are made of homogenous monocrystalline silicon materials, and the substrate silicon wafer layer is provided with a pressure guide through hole in the center. The manufacturing method has the advantages that the substrate silicon wafer layer and the sensitive silicon wafer layer are made by using the monocrystalline silicon materials as the substrates, the substrate silicon wafer layer and the sensitive silicon wafer layer are connected in an airtight manner through the silicon-silicon bonding process, the pressure sealing cavity of a silicon-silicon homogenous material structure is formed, various influences, caused by the pressure sealing cavity of the silicon-glass heterogeneous material structure of a conventional pressure sensor, on the performance of the sensor due to the feature difference of two different materials are avoided, static pressure errors are reduced effectively, temperature excursion of the sensor is lowered, and the comprehensive precision of the sensor is increased.
Owner:SHENYANG ACAD OF INSTR SCI

Non-singular terminal sliding-mode control method for Buck converter with constant switch frequency

The invention provides a non-singular terminal sliding-mode control method for a Buck converter with constant switch frequency and relates to a sliding-mode control method for the Buck converter. The problems that when a linear sliding-mode control method is adopted, the response speed of the Buck converter is low, the voltage output quality is low, and the response speed and the precision of output voltage of the Buck converter are directly influenced are solved. According to the method, based on an average state model of the Buck converter, by changing a duty ratio of a switch device, trigger pulses are generated for controlling on or off of the switch device, and then constant switch frequency voltage output of the Buck converter is achieved; a non-singular terminal sliding-mode controller of the Buck converter is designed, the advantages of strong robustness, overall finite time constriction, high stability precision and the like of the controller are utilized for overcoming the disturbance influence of load resistance, direct-current input voltage and the like, and therefore the quality of the output voltage is improved.
Owner:HARBIN INST OF TECH

Harmful substance testing device with internal air circulation device

The invention discloses a harmful substance testing device with an internal air circulation device. The harmful substance testing device comprises a cabin body which is provided with an internal air circulation device for simulating internal air circulation and is further provided with a perfume feeder for perfume testing, wherein the internal air circulation device can simulate the circulation system of internal air of a vehicle or a chamber so as to avoid the interference effects of the partial environmental factors of the part to a testing structure as well as improve the testing accuracy;and the perfume feeder can simulate the perception test of a human body to the environment after perfume is filled fed in the vehicle or the chamber. The testing device has diversified functions; thetesting device can not only realize gas sampling of the cabin body under the condition of ventilation / internal circulating air opening / internal circulating air closing and detection of release amountof volatile harmful gases such as formaldehyde and VOC (volatile organic compounds) volatilized from a tested object, but also simulate the perception test of the human body to the environment afterthe perfume is filled fed in the vehicle or the chamber; and the simulation environment is diversified, the simulation element is stronghigh in controllability, the interference effects of environmental factors or uncertain factors to test results are avoided, and the testing accuracy is high.
Owner:DONGGUAN CITY SIMPLEWELL TECH

Spacecraft flying-around approach motion simulator

ActiveCN104200715ARealize realistic simulationSolve the shortage of lateral relative position movementCosmonautic condition simulationsSimulatorsInterference resistanceEngineering
The invention provides a spacecraft flying-around approach motion simulator which comprises a testing platform, a target spacecraft motion simulating device and a tracking spacecraft motion simulating device. The spacecraft flying-around approach motion simulator has the advantages that vivid simulation of the respective absolution attitude motion and the relative position motion of a tracking spacecraft and a target spacecraft during orbital flying-around approach, and the defect that an existing linear guide rail type spacecraft motion simulator cannot vividly simulating the orbital flying-around approach of the tracking spacecraft and the target spacecraft is overcome. Compared with an air floatation type spacecraft motion simulator, the spacecraft flying-around approach motion simulator is simple in preparation, high in environment interference resistance, controllable in simulation time, capable of precisely restoring the simulation process, and the like.
Owner:BEIJING INST OF CONTROL ENG

Method for measuring rotate speed of synchronous generator based on circulation method

The present invention provides a measurement method based on the rotation vector algorithm, which is used for measuring the rotating speed of the synchronous generator. The three-phase phase voltage and the three-phase phase current at the motor terminal are sampled; and the velocity of the phase angle changes of the transient potential vector of the generator which rotates synchronously with the rotating shaft of the generator can be calculated, so as to acquire the rotating speed of the generator. In order to prevent the interference in the calculation process, the invention adopts the positive sequence components of the three-phase phase voltage and the three-phase phase current to perform the calculation. The invention has the advantages of simple calculation, high accuracy, large measuring range and easy operation, and is prevented from being influenced by the interference.
Owner:长江三峡能达电气有限责任公司 +1

Wheeled type distance measuring apparatus

The invention relates to a wheeled range finder, comprising a handle and a hand grip on the handle. The lower part of the handle is fixed with a wheel seat, and a rotatable measuring wheel is arranged on the side of the wheel seat. The range finder is characterized in that: a magnetic steel element is fixed on the side of the measuring wheel; a hall induction sensor matched with the magnetic steel element is fixed inside the wheel seat; an output of the hall induction sensor is connected with a control circuit; an output of the control circuit is connected with a display screen on the hand grip. The range finder matches the magnetic steel element with the hall induction sensor, can avoid the interference and influence from outside weather and foreign matter, and is little in measurement interference and higher in precision. In addition, the range finder automatically subtracts the reversing rotation distance of the measuring wheel from the present distance data, which is more convenient to use, reasonable and practical in integral structure design and easy to assemble and produce.
Owner:宁波蓝达实业有限公司

Sample preparation equipment dedicated to triaxial test and capable of preparing high-density disturbed soil sample

The invention discloses sample preparation equipment dedicated to a triaxial test and capable of preparing a high-density disturbed soil sample. The equipment comprises an electric hydraulic jack, a top plate, a middle plate, a bottom plate, supporting rod strings and a pile casing, wherein the electric hydraulic jack is equipped with an extension piston rod; scales are formed in the piston rod; a pressing disc is connected with one end of the piston rod; under the control of an electronic switch, the electric hydraulic jack drives the piston rod and the pressing disc to precisely compact a soil body to a corresponding position in the pile casing; after sample pressing is finished, the pile casing is inverted on the middle plate, and the obtained soil sample is pushed out by the electric hydraulic jack. Through adoption of the equipment, the extremely common defects that the compactness can hardly be controlled precisely, the equipment is deformed, and the prepared soil sample can hardly be taken out when the conventional sample preparation method is adopted, especially when the prepared soil sample is a high-density soil sample, are overcome; the equipment is simple to operate, and has the advantages that the workload of remolded sample preparation is reduced, the impact of a human factor on a test sample is mitigated, the precision and the efficiency of sample preparation are improved, and the problems existing in the disturbed soil sample preparation process are solved.
Owner:GUANGXI UNIV +1
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