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55results about How to "No crashes" patented technology
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Ascending data synchronization method for TDD system
The invention discloses a method for synchronizing uplink data in a time duplex division (TDD) system. The method comprises the following steps: a base band unit (BBU) in the TDD system transmits a preset delay time quantum to all the radio-frequency remote radio units (RRUs) that share the BBU; all the RRUs determine the data cache time of each RRU according to the uplink transmission delay fromeach RRU to the BBU and the received preset delay time quantum; and all the RRUs cache and transmit the received user data according to the determined data cache time of each RRU. The method achievesthe effect of data synchronization of all the RRUs that share the same BBU in the TDD system and prevents the state interference among the RRUs.
Owner:TD TECH COMM TECH LTD
Three-dimensional parking garage
A three-dimensional parking garage comprises a parking frame, a car loading plate, a comb plate, a side-moving driving mechanism and a lifting driving mechanism. A plurality of parking plates are arranged on the parking frame; the comb plate is located on the car loading plate; the lifting driving mechanism is connected with the car loading plate and drives the car loading plate to go up and down;the three-dimensional parking garage further comprises switching mechanisms; the parking plates comprise a plurality of guide rails which are arranged in parallel at intervals, and each guide rail isprovided with an upper guide rail surface and a lower guide rail surface; the side-moving driving mechanism is connected with the comb plate and drives the comb plate to slide along the upper guide rail surfaces or the lower guide rail surfaces; the switching mechanisms are installed at the positions close to the tail ends of the guide rails so as to lead the comb plate to slide to the lower guide rail surface from the corresponding upper guide rail surface for parking or lead the comb plate to slide to the upper guide rail surface from the corresponding lower guide rail surface for picking up a car. The three-dimensional parking garage is simple and ingenious in structure, small in occupied space, low in cost and easy to implement.
Owner:李文岚
Forming method of hard alloy threaded hole
InactiveCN107695618AAvoid processing difficultyGuaranteed accuracyThread cutting machinesNumerical controlCompression molding
The invention discloses a forming method of a hard alloy threaded hole. The forming method of the hard alloy threaded hole is characterized by comprising the following steps of preparing materials, wherein PEG is used as a forming agent, raw materials are ground with ethyl alcohol, and after spray drying is conducted, a mixture is generated; conducting mold pressing, wherein compression molding isconducted on the mixture; conduct semi-machining, wherein through a numerical control milling machine or a lathe or a machining center, a dedicated cutter of a special material is used, accurate thread dimension calculation is conducted, and then a threaded hole of a fixed parameter is machined on the pressed blank; and conducting sintering, wherein the needed threaded hole is obtained through sintering formation finally. The forming method of the hard alloy threaded hole has the beneficial effects that through accurate pressed blank shrinkage coefficient control, inner threads are machined on the pressed blank, the machining difficulty existing when the alloy threaded hole is machined after sintering is avoided, and a scheme is provided for machining of the hard alloy threaded hole.
Owner:九江金鹭硬质合金有限公司
Bagged material loading robot vehicle recognition and control system
InactiveCN107150911AAvoid rationalityAvoid defects such as material falling due to road conditionsLoading/unloadingPhysical hard workSemi automatic
The invention discloses a bagged material loading robot vehicle recognition and control system. The bagged material loading robot vehicle recognition and control system comprises a two-dimensional laser scanner, a cloud deck transmission mechanism, a cloud deck support, a cloud deck zero point switch, a fixed-distance bag discharging temporary storage device, a laser bijection sensor, a traveling mechanism, a swing arm mechanism and a lifting mechanism. The bagged material loading robot vehicle recognition and control system can extract and process three-dimensional point clouds obtained by a recognition system, a vehicle is recognized and positioned, cement bags conveyed by a conveying belt are ranked through the fixed-distance bag discharging device, the discharging sequence is guaranteed, the required rotation angles of all motors are worked out through kinematic solutions when a loading robot reaches a preset loading initial point and all tracks, then the robot is accurately controlled, and smooth loading is guaranteed. Meanwhile, the mechanical structure of the system is modularized, and maintenance is convenient; and the working process is semi-automatic, workers are liberated from the burdensome manual labor working environment, and the labor productivity is greatly improved.
Owner:烟台博特自动化设备有限公司
Aerial wind-energy power-station aircraft and aerial fixation aircraft device
InactiveCN106218849ASave energyReduce volumeBatteries circuit arrangementsEfficient propulsion technologiesElectricityPower station
An aerial wind-energy power-station aircraft relates to the technical field of engineering such as manufacture of power-driven aircrafts, aerial wind power and photoelectricity, aerial transportation and military affairs. The aircraft comprises an aircraft body (1) or a buoyancy lift body (20), a control system (4) and a propelling system (5). The aircraft is characterized in that the aerial wind-energy aircraft also comprises an aerial wind power generation system (2), a storage system (3) of power electric energy and a grounding and water-connecting system (6), wherein the power propelling system (5) comprises an electric propelling flight system (5.1). When the grounding and water-connecting system (6) is connected to an easy-to-connect ground object (12), an aerial fixation aircraft device (13) and a water body (14), the system stays at a stationary state and can start aerial wind-power generation. When the storage system (3) of the power electric energy is filled with aerial wind electricity, the electricity can then be supplied to the electric propelling flight system (5.1), so that flight can be driven. In this way, no fuel is consumed, and the flight can be implemented by ''aerial wind energy and wind electricity''. The aircraft has a very low cost; and by the storage system (3) of the power electric energy or the aerial fixation aircraft device (13), the aerial wind electricity with the very low cost can also be conveyed to the ground for utilization.
Owner:吕怀民 +1
Automobile side-turning proof safety system
InactiveCN101041320ASteering effortSmall turning radiusSteering linkagesAutomatic steering controlRolloverHydraulic pump
The invention relates to a rollover prevention safety system of motor vehicle, which discloses an assistant safety system of motor vehicle for preventing rollover in high-speed turning, belonging to the motor vehicle safety control system technology field. The rollover prevention safety system can make vehicle adjust vehicle gravity center automatically in high-speed turning and decrease the centrifugal force needed in vehicle turning so that the turning radius can be decreased and it is safer and more reliable in high-speed turning of vehicle. The invention can be realized by the following project. Hydraulic adjusting system of rollover prevention and hydraulic power turning machine are connected on hydraulic pump in parallel; when the speed achieves more than the certain value, open-close of corresponding electromagnetic valve is adjusted; when vehicle is turning, open-close of corresponding electromagnetic valve is adjusted to achieve the purpose of adjusting vehicle gravity center in high-speed turning. The rollover prevention safety system of motor vehicle in invention can be applied in various motor vehicles and it has a very good market applicable prospect.
Owner:尚东星
Built-in control system of special gate for rail traffic
InactiveCN101482980APowerfulStrong responsivenessProgramme controlTicket-issuing apparatusOperating modelJob demotion
An embedded control system for special turnstile for track traffic has a control center of the system constructed by closely combining an embedded ARM9200 CPU used as core control chip with a DCU-1 hardware module and DCU-2 hardware module; extremely strong real-time responsibility; a hardware system with modularized design and high integration; a hardware module with bus structural connection; parallel high-activity processing of system with separated service process and equipment control which operated independently and simultaneously; a multifunctional TFT passenger display; multiple demotion operating modes; function of sleep for saving energy and electricity; functions of remote monitoring, remote diagnosis, and repairing; and a designed powerful integrated simulation test platform matched with the control system of the gate machine.
Owner:天津市先志越洋科技有限公司
Coal shaping roller and automatic shaper applied to transporting coal by trains
InactiveCN101955070AShorten the timeSave human effortShaft and bearingsLoading/unloadingEngineeringCantilever
The invention discloses a coal shaping roller and an automatic shaper applied to transporting coal by trains and relates to a coal shaping roller and an automatic shaper, solving the problems of high labor intensity, incapability of meeting the requirement of railways and low work efficiency existing in the traditional flattening mode as well as the problem of shortfall because the rated weight loaded in the railway wagon cannot be reached. The coal shaping roller comprises two circular truncated cones and a cylinder arranged between the two circular truncated cones, wherein the two circular truncated cones and the cylinder are coaxially arranged. The coal shaping roller is arranged between the tail ends of two cantilever beams; two platform wagon height-adjusting wheels are respectively arranged at two ends of the coal shaping roller; each platform wagon height-adjusting wheel is connected at the tail end of the corresponding cantilever beam; two transitional guide wheels are positioned behind the coal shaping wheel; each transitional guide wheel is connected with the middle of the corresponding cantilever beam; and the outside diameter of each transitional guide wheel is greater than the gap between two sections of carriages. The invention can be used for flattening and shaping coal after the coal is loaded in the railway wagon.
Owner:吴险峰
Embedded B-mode ultrasonic diagnostic device and signal processing method thereof
ActiveCN101919714AImprove developmentEasy to useUltrasonic/sonic/infrasonic diagnosticsInfrasonic diagnosticsARM9Multi processor
The invention relates to an embedded B-mode ultrasonic diagnostic device and a signal processing method thereof, and the embedded B-mode ultrasonic diagnostic device comprises a housing and a display device, wherein a power supply module and a signal acquisition and processing circuit are mounted in the housing, and the power supply module can provide power supplies of plus or minus 80V, plus or minus 60V, 12V, plus or minus 5V; and the signal acquisition and processing circuit comprises an eight-channel A / D conversion circuit, an FPGA chip and an ARM9 chip, wherein the FPGA chip is connectedwith a dynamic memory, the eight-channel A / D conversion circuit is used for receiving an ultrasonic signal from a probe, the output of the eight-channel A / D conversion circuit is connected with a data input port of the FPGA chip, a control port of the FPGA chip is connected with a control port of the ARM9 chip, a data port of the ARM9 chip is connected with the data port of the FPGA chip, and theFPGA chip is connected with the display device. The embedded B-mode ultrasonic diagnostic device has the benefits that as the embedded B-mode ultrasonic diagnostic device adopts the teamwork of multiple processors and adopts an embedded operating system, the embedded B-mode ultrasonic diagnostic device has good modularization, scalability and real-time performance, powerful communication capacity, and rich and beautiful interface, and can lead the performances of the whole B-mode system to be more stable and avoid the halting phenomenon during the normal working.
Owner:CONTEC MEDICAL SYST
Client testing method and device, electronic equipment and computer readable storage medium
The invention provides a client testing method and device, electronic equipment and a computer readable storage medium, and relates to the field of information processing. The method comprises the following steps: when a service request sent by a to-be-tested client running in test equipment is received, sending the service request to a service server corresponding to the to-be-tested client; receiving service data returned by the service server in response to the service request, and modifying the service data based on preset configuration information to obtain modified service data; and sending the modified service data to the test equipment, wherein the modified service data are used for testing the processing condition of the client to be tested on abnormal data. According to the method, under the condition that the service server returns any service data to the test equipment, the client does not crash, the robustness of the client is further ensured, and the user experience is also improved.
Owner:BEIJING BYTEDANCE NETWORK TECH CO LTD
Method for determining a dynamic vehicle distance between a following vehicle and a preceding vehicle of a platoon
InactiveCN109690642AConducive to loadSave fuelParticular environment based servicesAnti-collision systemsPlatoonClassical mechanics
The invention relates to a method for determining a dynamic vehicle distance (Adyn) between a following vehicle (FF) and a preceding vehicle (VF) of a platoon, wherein a V2V signal (S1) can be wirelessly transferred between the following vehicle (FF) and the preceding vehicle (VF), comprising at least the following steps: determining a current maximum following-vehicle deceleration (zMax_FF) of the following vehicle (FF); determining a current transfer time for transferring to the following vehicle (FF) the information that the preceding vehicle (VF) has initiated an emergency braking operation (N); determining a current maximum preceding-vehicle deceleration (zMax_VF) of the preceding vehicle (VF); and determining the dynamic vehicle distance (Adyn) from a transfer distance (s) and from abraking distance difference (sB), wherein the transfer distance (s) indicates the distance traveled by the following vehicle (FF) between the initiation of an emergency braking operation (N) by the preceding vehicle (VF) and the initiation of an emergency braking operation (N) by the following vehicle (FF), wherein the transfer distance (s) depends on the current transfer time, and wherein the braking distance difference (sB) indicates a difference between a preceding-vehicle braking distance (w_VF) defined by the maximum preceding-vehicle deceleration (zMax_W) and a following-vehicle brakingdistance (w_FF) defined by the maximum following-vehicle deceleration (zMax_FF).
Owner:WABCO EURO BVBA SPRL
Service data processing method and device and electronic equipment
PendingCN113220669AImprove performanceReduce resource consumptionDatabase updatingSpecial data processing applicationsAccess timeTerminal equipment
The invention provides a service data processing method and device and electronic equipment. The method can be applied to a first node in a cluster service system and comprises the following steps that a modification request sent by terminal equipment is received, wherein the modification request comprises an identifier of to-be-modified first service data, modification content of the first service data and a first version identifier based on which the modification of the first service data is carried out, according to the identifier of the first service data, acquiring a second version identifier corresponding to the first service data from a cache database corresponding to the first node, wherein cache databases corresponding to different nodes in the cluster service system are different, and if the first version identifier is determined to be the same as the second version identifier, updating the modified content of the first service data to a service database. According to the scheme, the access times of the service database can be reduced, the resource consumption of the service database is reduced, and the performance of a cluster service system is improved.
Owner:JINGDONG TECH HLDG CO LTD
Fault detection and communication positioning method for transmission line
ActiveCN104391225AReasonable automationReasonable realization of intelligenceFault locationMicrocontrollerMicrocomputer
The invention discloses a fault detection and communication positioning method for a transmission line. The method involves a single-chip microcomputer, a photoelectric coupling circuit, an expansion interface circuit, an amplifying circuit, a high-frequency filter circuit and a wireless emitting circuit. According to the method, the AT89C51 single-chip microcomputer and a plurality of integrated circuit chips form a mini system, and all the circuits of the mini system are integrated to a printed circuit board; therefore, the structure is compact, the size is small, and the process is simple; automation degree and working performance are increased and improved by being compared with the traditional digital circuit; the rich software functions of the computer are utilized; the data are sampled, memorized and processed, to reasonably realize automatic and intelligent data scanning of each branch of a DC system; the number and polarity of each ground branch can be positioned; in addition, an operator can be reminded by a wireless alarming manner to timely treat the ground fault.
Owner:NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
Polyurethane-coated slow-release fertilizer and preparation method thereof
InactiveCN104529634ARegular structureImprove wear resistanceLayered/coated fertilisersFertilizer mixturesIsocyanateSolvent
The invention relates to a slow-release fertilizer and particularly relates to a polyurethane-coated slow-release fertilizer and a preparation method thereof. The polyurethane-coated slow-release fertilizer is prepared from an epoxy-modified prepolymer and a curing agent, wherein the epoxy-modified prepolymer is prepared from polyether glycol, diisocyanate and epoxy resin and contains 5-9% of -NCO, the functionality of polyether glycol is preferably 2-4, and the molecular weight of polyether glycol is preferably 1000-2000. The structure of a membrane material prepared from the prepolymer is regular, the polyurethane-coated slow-release fertilizer has the characteristics of high wear resistance, elasticity, degradability and good low-temperature resistance, and the breakdown phenomenon cannot be caused. The requirements of European union for solubility and preliminary solubility of the slow-release fertilizer are met. By using the preparation method provided by the invention, the process is simple and reasonable, no solvents are used in the production process, and harsh reaction conditions are not needed.
Owner:ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL
Wafer cutting method
PendingCN111489966ANo crashesImprove cutting yieldSemiconductor/solid-state device manufacturingWaferLaser cutting
The invention discloses a wafer cutting method. The wafer cutting method comprises the steps of firstly using laser for cutting along a pre-cutting mark on the front surface of a wafer, wherein the depth of the cutting channel cut by the laser exceeds the final thickness of the wafer; attaching a grinding adhesive film layer to the front surface of the wafer; and grinding the back surface of the wafer attached with the grinding adhesive film layer, grinding the wafer to a final target thickness to separate chips from each other, attaching the adhesive film layer to the back surface of the ground wafer, fixing the ground wafer on a wafer frame through the adhesive film layer, and removing the grinding adhesive film layer on the front surface of the wafer; continuously cutting along the longitudinal and transverse cutting channels between the chips by using laser to cut the adhesive film layer on the back surface of the wafer; and finally separating the adhesive film layer from the chipsin a low-temperature state. The cutting method is used for cutting an ultrathin wafer. The problem of collapse during wafer cutting is avoided. The cutting yield of the wafer is improved.
Owner:CHIPMOS TECHSHANGHAI
Telecontrol communication safety instrument
InactiveCN103701802ANo crashesEnsure safetyPower network operation systems integrationCircuit arrangementsMicrocontrollerGeneral Packet Radio Service
The invention provides a telecontrol communication safety instrument which is convenient in communication, safe in use and not easy to be attacked. The telecontrol communication safety instrument is characterized in that three-phase electrical capacity acquisition, measurement, remote control and network communication are integrated into a whole, a 32-industrial-grage SCM (Single Chip Microcomputer) is adopted by the telecontrol communication safety instrument, multiple anti-interference measures are carried out on software and hardware, and the situation that the telecontrol communication safety instrument cannot be subjected to system halt under any conditions is ensured; by utilizing safety technologies such as dedicated digital certificate authentication for electric power dispatching, firewall and data encryption, a remote access device can be certificated, transmitted information can be subjected to encryption and digital signature, and the access range and the resource can be limited by setting a safety strategy; a TCP / IP (Transmission Control Protocol / Internet Protocol) network communication technology and an IPSEC (Inter Protocol Security) security tunneling technology are integrated into a whole, an emergency confidential data channel can be established through a GPRS (General Packet Radio Service) network mode under the situation that the a power system is in abnormal communication, and a safe and reliable transmission channel is provided for transmitting real-time data of automation of electric network management. The telecontrol communication safety instrument provided by the invention can be applied to the technical field of communication.
Owner:珠海市鸿瑞信息技术股份有限公司
Biomass gasification wastewater treatment method and device
PendingCN106517676AEasy to handleReduce poisonFatty/oily/floating substances removal devicesWater contaminantsWater qualityCatalytic oxidation
The invention discloses a biomass gasification wastewater treatment method and device. The treatment method comprises the following steps: (1) pretreatment: performing oil removal treatment, first coagulation treatment, flotation treatment and first ozone oxidation treatment on biomass gasification wastewater to obtain first effluent water; (2) biochemical treatment: sequentially performing anaerobic treatment and A / O (anoxic / oxic) biological catalytic oxidation treatment on the first effluent water, and collecting second effluent water; and (3) advanced treatment: sequentially performing second coagulation treatment and membrane separation treatment on the second effluent water to obtain up-to-standard effluent water. The device comprises an oil removal device, a first coagulation device, a flotation device, a first ozone oxidation treatment device, an anaerobic treatment device, an A / O biological catalytic oxidation device, a second coagulation device and a membrane separation device which sequentially communicate with each other. The method and device have the characteristics of favorable wastewater treatment effect and high anti-shock loading capability, and can effectively treat biomass gasification wastewater; and the treated effluent water has favorable water quality.
Owner:GO HIGHER ENVIRONMENT GRP CO LTD
Monitor processing method and system
ActiveCN103888310AIncrease the numberReduce the burden onData switching networksIp addressProcess module
The invention provides a monitor processing method and system. The system comprises an access processing module and a monitor management module, wherein the modules are connected with each other. The access processing module comprises at least two access nodes, and each access node is used for accessing a monitored device. The monitor management module is used for selecting a second access node from an access node without fault in at least two access nodes when the fact that a first access node in at least two access nodes has a fault is determined, and sending the IP address and the port number of the second access node to the monitored device which is connected with the first access node, so that the monitored device accesses the second access node according to the IP address and the port number of the second access node. According to the invention, the running state of each node can be monitored in real time; when a node has the fault, automatic new node assigning is realized; and the normal operation of the whole system is ensured.
Owner:CHINA SATELLITE NAVIGATION & COMM
Semi-digital building intercom system IP network connector
PendingCN107483874ARealize function controlIntercom calls are clear and continuousClosed circuit television systemsTwo-way working systemsPacket lossElectronic switch
The invention discloses a semi-digital building intercom system IP network connector which is characterized by comprising a HiSilicon main control chip HI3520, a peripheral basic circuit, an audio processing chip, a video processing chip, a MAX485 chip and an electronic switch control circuit, wherein the audio processing chip, the video processing chip, the MAX485 and the electronic switch control circuit are connected with the HiSilicon main control chip HI3520 and the peripheral basic circuit; different outdoor machines can be in communication with the HiSilicon main control chip HI3520 by the electronic switch control circuit; the audio and video signals of the outdoor machines enter the HiSilicon main control chip HI3520 and the peripheral basic circuit to be subjected to network digital processing after entering the audio processing chip and the video processing chip through the electronic switch control circuit respectively; the MAX485 chip is used for realizing 485 communication between the HiSilicon main control chip HI3520 and the outdoor machines and a layering decoder. The semi-digital building intercom system IP network connector has the advantages that data transmission is stable, audio and video signal lag cannot occur, and crashing and packet loss cannot occur to the network during large data and multi-node communication.
Owner:FOSHAN LANTIAN NETWORK SCI & TECH CO LTD
Control board
InactiveCN103324120ASimple structureLow costProgramme controlComputer controlElectromagnetic interferenceComputer module
The invention discloses a control board which comprises an input interface module, a microprocessor, an analog pulse generation circuit and an output interface module. The input interface module is connected with the microprocessor through a photoelectric coupler, the microprocessor is connected with the output interface module through the analog pulse generation circuit, the analog pulse generation circuit comprises a drive circuit, and the drive circuit comprises a 74hc14 drive chip. The control board is simple in structure, low in cost, strong in anti-electromagnetic interference capacity and good in system stability, has industrial grade lightning protection high reliability performance, and has no dead halt phenomenon; digital quantity working condition indicator lights are provided, every digital quantity input and output has an indicator light, and working conditions of input points are conveniently observed.
Owner:KUNSHAN LEAGUE AUTOMECHANISM
Method for controlling real-time decompressor of multi-spectrum band remote sensing images
ActiveCN107046647AImprove stabilityNo crashesDigital video signal modificationDisplay deviceComputer module
The invention discloses a method for controlling a real-time decompressor of multi-spectrum band remote sensing images. The real-time decompressor comprises a decompression processing unit and a control module, the decompression processing unit comprises a plurality of decompression processing boards; the control module is connected with the decompression processing boards through PCIE interfaces, and the control module is connected with a formatter through a network interface; and the method comprises the following steps: S1, receiving multi-spectrum band remote sensing compressed code streams released by a satellite in a parallel mode; S2, performing decompression processing on the multi-spectrum band remote sensing compressed code streams in the parallel mode; and S3, outputting and sending the decompressed multi-spectrum band remote sensing images in the parallel mode. according to the method provided by the invention, multipath parallel multi-thread processing is adopted to improve the data input and output number and shorten the system delay time; and a self fault diagnosis, locating and tracking function is designed in the control module, and enough output information is provided by a display device on a chassis for the judgment of maintenance personnel. In addition, and a test interface is arranged on the front face of the chassis so as to facilitate the maintenance of the operation condition of the system by the maintenance personnel.
Owner:HUAZHONG UNIV OF SCI & TECH
Camera module burning system based on turntable
PendingCN111913724AReduce capacityHigh coding densityTelevision system detailsColor television detailsDatasheetEngineering
The invention relates to the technical field of cameras, and relates to a camera module burning system based on turntable, which comprises a preset module for presetting an identification code for recording identification information of a camera module on the camera module; a binding module used for binding the corresponding data of the camera module with the identification code; a scanning moduleused for scanning the identification code on the camera module; an analysis module used for analyzing the identification code information and obtaining identity data in the identification code information; a generation module used for generating a target feature data table according to the configuration information of an intelligent terminal; and a burning module used for matching the identity data with the target feature data table and burning the identity data and the data bound with the identification code into a memory of the intelligent terminal in batches. According to the invention, the problems of easy crash and low efficiency during identity data burning in the prior art are solved.
Owner:SHINE OPTICS TECH CO LTD
Control system for brushless direct current motor free of position sensor
InactiveCN105071714AHighly integratedGood speed regulation accuracySingle motor speed/torque controlElectronic commutatorsMicrocontrollerMicrocomputer
The invention discloses a control system for a brushless direct current motor free of a position sensor. The control system comprises the brushless direct current motor, wherein a motor rotating speed detection module, an analogue / digital (A / D) conversion module, a counter potential zero-cross detection circuit, a microcontroller module, a display module, a rotating speed adjusting module, a current adjusting module and a pulse-width modulator (PWM) are arranged on the brushless direct current motor. With an automatic voltage regulation (AVR) series single chip microcomputer as a main control chip, the counter potential zero-cross detection algorithm is improved; accurate calculation of the commutation time of an inverter within a whole-speed range is finished; meanwhile, a voltage and current double-closed loop controller and the PWM are also integrated; precise adjustment on the rotating speed of a control object is realized; the problem of dead halt is avoided; and the demands of electric vehicles on stable operation of a motor controller are met.
Owner:苏州南光电子科技有限公司
Radio-frequency mobile communication card and communication method
ActiveCN103166659AReduce maximum power consumptionSolve excessive power consumptionPower managementTransmissionCommunication unitProcess communication
The invention discloses a radio-frequency mobile communication card and a communication method. Before sending and receiving corresponding radio-frequency data to achieve radio-frequency communication, a radio-frequency unit detects whether resources of a processing unit are occupied first, and then the radio-frequency unit judges whether to send and receive the radio-frequency data according to detection results; and before processing communication data received by a mobile communication unit, the mobile communication unit detects whether the radio-frequency unit is in a working state, and then the mobile communication unit judges whether to process the received communication data according to detection results. The radio-frequency unit of the radio-frequency mobile communication card detects whether the processing unit is in the working state first before achieving the radio-frequency communication, the mobile communication unit detects whether the radio-frequency unit is in the working state first before processing the communication data received by the mobile communication unit to achieve the mobile communication, and therefore the situation that the radio-frequency unit and the processing unit are in the working state at the same time can be avoided, maximum power consumption of the radio-frequency mobile communication card in the process of working can be reduced, and the problem of overlarge power consumption of the radio-frequency mobile communication card in the process of working is solved.
Owner:NATIONZ TECH INC
Method for loading patches based on class files in Android system
ActiveCN107329783ATroubleshoot technical issues affecting application performanceImprove operational efficiencyProgram loading/initiatingProgramming languagePatch type
The invention provides a method for loading patches based on class files. The method includes the steps that a patch pack is obtained from a server first; a to-be-patch class is found from dex files; subpackage processing is carried out on the first dex file to obtain the second dex file and the third dex file, the patch class is loaded into the patch class to be inserted into the second dex file to form a new fourth dex file, a jump instruction is inserted between the to-be-patched class and the previous class adjacent to the to-be-patched class, the jump instruction executes the patch class, and a jump instruction is inserted in front of the patch class by determining the to-be-patched class; when a program is executed to the position, the program is directly skipped to execute the patch type, and then a patch of an application is updated. By means of the method, the patch of the application can be effectively repaired, and when the patch is repaired, the phenomena of dead halt, slow response, system breakdown and the like are avoided, and the operation efficiency of the whole application and the use experience of a user are improved.
Owner:ZHONGGUANG REDIANYUN TECH CO LTD
Embedded photoelectric signal processing and control system and usage method thereof
InactiveCN105425676AQuick responseImprove reliabilityProgramme controlComputer controlMicro nanoEngineering
The invention discloses an embedded photoelectric signal processing and control system and a usage method thereof. A six quadrant photoelectric signal acquisition circuit is included. The six quadrant photoelectric signal acquisition circuit is successively connected to a signal conditioning circuit and an analog to digital conversion circuit. The analog to digital conversion circuit is connected to a master control circuit. The master control circuit is connected to a driving structure. The six quadrant photoelectric signal acquisition circuit, the master control circuit and the driving structure are connected to a power supply. By using the system and the method in the invention, multipath signals can be simultaneously processed; a simulation signal is converted into a high-precision digital signal so that high-precision measurement and control to a mobile object can be completed; the system and the method are suitable for industrial high-precision measurement and control so that the industrial measurement and control precision reach a micro-nano level. Simultaneously, system stability is good, an anti-electromagnetic interference capability is high, industrial-level high reliable performance is possessed and there is no dead halt phenomenon. A response speed to an emergent event is fast. The system and the method possess characteristics that installation is simple; operation is stable; efficiency is high; cost is low; maintenance and upgrading are easy and so on.
Owner:ZHEJIANG NORMAL UNIVERSITY
Multiple-grating monochrometer and calibration method thereof
InactiveCN101726359BNo crashesImprove wavelength control accuracySpectrum generation using diffraction elementsGratingAnti-aliasing
Owner:BEIJING INFORMATION SCI & TECH UNIV
Portable airplane power supply quality test system and method
InactiveCN105334471ASmall structureMeet the requirements of field usePower supply testingCurrent sensorDisplay device
The invention discloses a portable airplane power supply quality test system. The portable airplane power supply quality test system comprises a host, an alligator clip, a current sensor, a peripheral device and a matched cable. The host comprises a PC104 computer, a multichannel synchronous acquisition card, a voltage regulation circuit board, a display, a switching power supply, a current detecting interface, a voltage detecting interface, a current input interface, a voltage input interface, a solid state disk and a fan. The portable airplane power supply quality test system has the advantages of being high in reliability and being able to overcome the unfavorable environmental factors that the outfield temperature of the airplane changes violently and the vibratility is high. The portable airplane power supply quality test system and method can realize on-line detection of power supply quality and waveform recording at the same time, and have dual function for a traditional instrument and a waveform recorder. Besides, the waveform data playback can be directly completed in the airplane without exporting the data so that the portable airplane power supply quality test system and method are convenient to use.
Owner:QINGDAO CAMPUS AVIATION ENG COLLEGE OF THE PEOPLES LIBERATION ARMY NAVY
A two-dimensional magnetorheological damping tube clamp
ActiveCN105822837BInhibition of fluid-solid couplingGreat effortPipe supportsSpringsVibration accelerationEngineering
The invention discloses a two-dimension magnetorheological damping pipe clamp. Pistons are wound by electromagnetic coils respectively and are installed in a cylinder enclosed by upper covers, bases and a lower cover; a magnetorheological fluid is filled in an interval between the cylinder and each piston; an inner pipe clamp is fixed to a hydraulic transmission system pipeline; the lower end of the inner pipe clamp is connected with piston rods; the two sides of the inner pipe clamp are supported by springs respectively; when the pipeline vibrates, the inner pipe clamp vibrates along with the pipeline and drives the pistons to vibrate together; a controller detects information including vibration acceleration, frequency and amplitude by an acceleration sensor installed on the pipeline and regulates the strength of a magnetic field by changing the size of currents of the electromagnetic coils, so that the viscosity of the magnetorheological fluid is changed, the damping force applied to the pistons is dynamically regulated, and the vibration energy of the pipeline is consumed to the maximum. The two-dimension magnetorheological damping pipe clamp has a simple structure, is rapid in response speed, low in power consumption and high in reliability and is capable of improving the stability of work of a hydraulic system.
Owner:BEIJING UNIV OF TECH
Temperature, humidity and pH detection control system for use in improvement of saline-alkali soil
InactiveCN104965059AHigh measurement accuracyHigh precisionEarth material testingAltering/correcting law of variationCapacitanceAlkali soil
The invention provides a temperature, humidity and pH detection control system for use in improvement of saline-alkali soil. The system comprises an operational amplifier, resistors, a capacitor and a diode which are connected through a lead. The operational amplifier is an 8-pin operational amplifier UA of OPA129LM type, including 1 to 8 pins; the second pin of the operational amplifier UA is an opposing input end connected with one end of a resistor R1; the other end of the resistor R1 is grounded; the second pin of the operational amplifier is further connected with one end of a resistor R4; the other end of the resistor R4 is connected with the eighth pin of the operational amplifier UA. The system has the advantages that temperature, humidity and pH can be precisely measured to third decimal places, measuring precision is high, and data are highly indicative; a temperature-humidity probe and a pH probe are provided, so that a sampling detector does not need to carry two devices again to sample the pH, the temperature and the humidity, equipment is simple, operating is facilitated, carrying is facilitated, and stability is high; a 24V power supply lower than the human safety voltage is utilized, so that running is stable, and system halt does not occur.
Owner:WEIFANG YOURONG IND
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