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DSP (Digital Signal Processor)-based quad-rotor unmanned aerial vehicle autonomous hover control system and method
ActiveCN103365295ALow costEasy to replacePosition/course control in three dimensionsBrushless motorsQuad rotor
The invention discloses a DSP (Digital Signal Processor)-based quad-rotor unmanned aerial vehicle autonomous hover control system and method. The control system is provided with four screw propellers and control units which are arranged on four airfoils respectively; and each control unit is that a master control unit is connected to a ground computer through a wireless network, and a receiver is connected with a signal conversion module and a manual / automatic switching chip in sequence, transmits a received signal transmitted by a remote controller into the manual / automatic switching chip through the signal conversion module, is also connected with the manual / automatic switching chip through the master control unit and is used for transmitting the received signal to the manual / automatic switching chip through the master control unit for controlling driving units to drive direct current brushless motors on the four screw propellers to work. According to the method, kalman filtering processing is performed on sonar data to obtain accurate height data and driver control. According to the system and the method, the autonomous flight capacity of a micro quad-rotor unmanned aerial vehicle and the adaptability to the environment can be effectively enhanced, and the autonomous flight control under indoor environments and outdoor environments can be finished.
Owner:TIANJIN UNIV
Full digit numerical control inversion welding machine
InactiveCN101362245AImprove performanceStrong event management skillsArc welding apparatusNumerical controlNumerical controlHuman–machine interface
The invention relates to a totally digitalized numerical control inversion welder, which belongs to the welding technical field. In the invention, a current signal processing module and a voltage signal processing module respectively collect the welding current and voltage, and unify a current signal and a voltage signal into a 0-5V direct-current signal which is then transmitted to an ARM microprocessor; the ARM microprocessor generates a PWM impulse signal according to the current and the voltage which are obtained through measurement, and the PWM impulse signal is transmitted to an IGBT driving module; the IGBT driving module converts the PWM impulse signal into a signal which can directly drive an IGBT tube to work, so as to control the output of an inverter; a human-computer interface display module is connected with the ARM microprocessor, so as to display the information such as the welding condition, the historic records and the like; a key input module converts the key information into a high-low level signal, and simultaneously generates key interruption; a security action recognition module judges the alarming content and outputs a control signal to protect the safety of the welding equipment and the welding personnel. The total digitization of the welder is realized through the ARM microprocessor.
Owner:上海熔易焊接机制造有限公司
Method for treating vanadium extracting industrial acid wastewater and comprehensively recycling valuable metal
ActiveCN105567976AControl parameters are clearly definedEasy to controlCalcium/strontium/barium sulfatesCement productionWastewaterBarium sulfide
The invention discloses a method for treating vanadium extracting industrial acid wastewater and comprehensively recycling valuable metal. The method comprises the following steps that aeration and oxidation are carried out on the acid wastewater, and then a purifying agent A is added and is at least one of limestone, unslaked lime, slaked lime and lime milk; stirring is carried out for reacting, and the pH of the reaction endpoint is controlled to be equal to 4.5 to 5.0; filtering and washing are carried out, and primary purifying liquid and primary purifying residues are obtained; a purifying agent B is added to the primary purifying liquid, and is at least one of unslaked lime, slaked lime and lime milk; stirring is carried out for reacting, and the pH of the reaction endpoint is controlled to be equal to 6.5 to 7.5; filtering and washing are carried out, and secondary purifying liquid and secondary purifying residues are obtained; and a purifying agent C is added to the secondary purifying liquid and is at least one of sodium dimethyldithiocarbamate (SDD), sodium sulfide and barium sulfide, stirring is carried out for reacting, filtering is carried out, and third purifying liquid and third purifying residues are obtained. The method has the beneficial effects of being simple in process step, low in treatment cost, good in valuable metal comprehensive recovery effect and the like.
Owner:SHENGTONG YIHE TIANJIN ENTERPRISE MANAGEMENT CONSULTING CO LTD
Preparation method of 1,1-difluoro ethane and its production equipment
ActiveCN1556082AReduce consumptionSmall aspect ratioPreparation by halogen halide additionHydrofluoric acidPolymer science
A process for preparing 1,1-bifluoroethane features that the initial lever of hydrofluoric acid is 60-70% of reactor's volume, the weight of catalyst is 30-40% of the weight of hydrofluoric acid, the feeding speed of acetylene is 0.08-0.12 kg / h for each kg of hydrofluoric acid, and the reaction temp and presure are 22-32 deg.C and 0.03-0.3 MPa. Its productive equipment is also disclosed, which features small ratio of length to diameter, full reaction, and less consumption of raw material.
Owner:ZHEJIANG AIKESHENG CHEM
Taxi sharing billing system
InactiveCN103778666AWith memory functionConvenient travelTaximetersKey pressingLiquid-crystal display
The invention discloses a taxi sharing billing system. The taxi sharing billing system comprises a keying unit which is used for a driver and passengers to input riding modes selected by at least one passenger into the taxi sharing billing system, a mileage signal input unit which is used to collect riding mileage of each passenger in real time and send collected riding mileage data information to a main control unit, the main control unit which is used to receive the data information transmitted by the keying unit and the mileage signal input unit, bill each passenger for riding, and control working of the whole taxi sharing billing system, a liquid crystal display (LCD) unit which is used to receive data information transmitted by the main control unit and display riding cost of each passenger in real time, and an invoice printing unit which is used to receive riding cost information of each passenger, transmitted by the main control unit, and print an invoice of each passenger according to expense amount of the passenger. The taxi sharing billing system can simultaneously display information such as the riding cost and the mileage of four passengers at most, and can simultaneously print a plurality of the invoices.
Owner:DALIAN JIAOTONG UNIVERSITY
Detection method of fluid leakage and water leakage protector with application of detection method
InactiveCN104990675AEasy to useAvoid affecting useMeasurement of fluid loss/gain rateWater leakageWater source
The present invention discloses a detection method of fluid leakage and a water leakage protector with the application of the detection method, belonging to the field of fluid leakage detection. According to the method, the velocity of a fluid is detected, and when the fluid has a speed and the velocity is constant and reaches a set time, fluid leakage is judged. The invention also discloses the water leakage protector with the application of the detection method. According to the invention, the velocity of the fluid is not related with the reliability and correctness of leakage judgment, according to the detection method, the fluid leakage with various reasons and various states can be timely found, the method is safe and reliable to use, and especially a small flow leakage can be effectively found and solved. According to the water leakage protector with the application of the detection method, the technical problem that an existing leakage protector can not detect small flow leakage is solved, the problem of water resource waste caused by forgetting to turn off a faucet can be effectively solved, and the water leakage protector can be widely applied to a household water pipeline, a water meter, a water purifier and the like.
Owner:储锦方 +1
Ceiling plate splicing structure of fabricated ceiling
PendingCN111945954AGuaranteed installation effectEasy to useCeilingsStructural engineeringMechanical engineering
The invention provides a ceiling plate splicing structure of a fabricated ceiling. The ceiling plate splicing structure comprises a ceiling plate, a plate reinforcing member and a hanging keel, wherein the plate reinforcing member comprises a mounting part and a hanging plate, two opposite side edges of the ceiling plate are clamped in the mounting part, the hanging plate is buckled in a bucklinggroove in the bottom of the hanging keel, at least one buckling member is arranged on the hanging plate, the buckling member comprises a mounting plate and a clamping plate, the mounting plate is clamped in a mounting hole in the hanging plate, and the clamping plate is hung on an elastic piece of the hanging keel. According to the ceiling plate splicing structure of the fabricated ceiling, the plate reinforcing member of a combined structure is convenient to transform and reuse, and the ceiling cost is reduced.
Owner:GOLD MANTIS FINE DECORATION TECH SUZHOU CO LTD
Determination method for absorption rate of tobacco peduncle material liquid and device thereof
InactiveCN103383333AEasy to operateReduce investmentWeighing by absorbing componentProcess engineeringSelf feedback
The invention relates to a determination method for the absorption rate of a tobacco peduncle material liquid and a device thereof, and belongs to the field of tobacco processing technology. With a determination device, the absorption rate of the tobacco peduncle material liquid is determined by using a weighing method, and the method comprises the steps of setting determination conditions, and determining the water content of tobacco peduncles and the absorption rate of the tobacco peduncle material liquid. The device comprises a base (1) with a heating element, a control panel (2) arranged on the base (1), a liquid containing tank (3) marked with a tank capacity scale (4), a net cage (5) arranged in the liquid containing tank (3) and fixed through a net cage fixing element (6) and provided with a cover plate (12) at the end face, and a lifting device (7). One end of the lifting device is fixed on the base (1), and the other end of the lifting device is connected with the net cage fixing element (6). The method and the device have the advantages that: the device has self feedback regulation of temperature, can rise and fall automatically, and can measure multiple samples at a time; and the method has high determination precision, high efficiency and low cost, and saves raw materials and material liquid.
Owner:YUNNAN RES INST OF TOBACCO SCI
Electric welding machine and circuit control board system thereof
ActiveCN103722319AClear structureSimple production processDc-dc conversionWelding/cutting auxillary devicesPower flowFull wave
The invention provides a circuit control board system of an electric welding machine. The circuit control board system comprises a control board and a master board, and the control board and the master board are connected through a flat cable; the master board comprises a switch power supply circuit, an input voltage judging circuit, a voltage doubling rectifying filter circuit, a rectifying filter circuit, an inverter circuit, a transformer, a full-wave rectifying circuit, a current feedback circuit and a voltage feedback circuit. The invention further provides the electric welding machine. The electric welding machine and the circuit control board system thereof have the advantages that the electric welding machine is simple and clear in structure; production process is simplified, production hours are shortened, and production cost is reduced; connection relation is simple, and some key connection leads are replaced by copper foils, so that a fool-proof function can be achieved, and the probability of production errors is reduced; interferences by clustering of traditional connection leads are reduced by the simple connection relation; functional modules are individually laid out, so that test and maintenance are facilitated; the whole system of the electric welding machine is modularized, so that operations such as improving and upgrading of the electric welding machine are facilitated.
Owner:SHANGHAI GREATWAY WELDING EQUIP
Gold slice embroidery computer embroidery machine
The invention discloses a Tinsel embroidery computer embroidery machine, which solves the problems in the prior art that the structure is complicated and not compact, the embroidery pattern quality can not be guaranteed, the embroidery machine product is uneasy to be updated and redesigned. The technical proposal adopted is that: the Tinsel embroidery computer embroidery machine comprises a machine head, a tinsel delivery mechanism arranged on the machine head and an embroidering needle; the invention is characterized in that: the machine head is provided with a rod-shaped pressing part, the pressing part and the embroidering needle are arranged at the downside of the machine head in parallel along the vertical direction, the end of the pressing part can punch a tinsel piece before the embroidering needle sews the target tinsel piece.
Owner:FEIYA GRP CO LTD
Cloud computing system
The invention discloses a cloud computing system, which includes a cloud computing center, a cloud base station and a client. The cloud computing center is connected with several cloud base stations, and each cloud base station is connected with several clients. Each cloud base station is equipped with The encryption module is used to encrypt the data input by the client and send it to the cloud computing center, encrypt the data sent by the cloud computing center and send it to the client for decryption, for customers to view; it also includes a control module and an update module , a management module, and a feedback module. The present invention greatly improves the operating efficiency of the system through the setting of the management module, and improves the security of data transmission through the setting of the encryption module. At the same time, it has its own data update function, which greatly expands the use of the system. range, and when in use, customer feedback can be collected, which is conducive to system upgrades and improvements.
Owner:ZHOUKOU NORMAL UNIV
Method for removing silicon and phosphorus impurities from rich-vanadium desorption liquid
The invention discloses a method for removing silicon and phosphorus impurities from rich-vanadium desorption liquid. The method comprises the following steps that the temperature of the rich-vanadium desorption liquid is regulated to 10 DEG C to 100 DEG C; purifying agents A are added, wherein the purifying agents A are at least one kind of materials from quicklime, slaked lime and lime milk, the full reaction is carried out after the stirring, the obtained reaction liquid is filtered and washed, the primary purified rich-vanadium liquid is obtained; the pH value of the primary purified rich-vanadium liquid is regulated to 8 to 10; and purifying agents B are added, wherein the purifying agents B are magnesium chloride and / or magnesium sulfate, the full reaction is carried out after stirring, the obtained reaction liquid is filtered and washed, and the purified rich-vanadium liquid is obtained. The method has the advantages that the process steps are simple, the purification cost is low, the vanadium loss rate is low, the silicon and phosphorus removal effect is good, and the like.
Owner:CHANGSHA RES INST OF MINING & METALLURGY
Design method for torsional vibration of reciprocating compressor rotor system
PendingCN112270050AImprove calculation accuracyExtended functional scopeGeometric CADDesign optimisation/simulationFlywheelControl theory
The invention discloses a design method for torsional vibration of a reciprocating compressor rotor system, and the method comprises the steps of carrying out the mass equivalent calculation on a moving part of a reciprocating compressor, and providing data for the model conversion of a torsional vibration system of the reciprocating compressor rotor system, wherein the reciprocating compressor moving part for mass equivalent calculation comprises a connecting rod, a crosshead and a piston; and according to the principle that the rotational inertia of the structure is equal, carrying out equivalent processing on a coupler structure, a flywheel and a motor rotor structure of the rotor system, thereby completing the geometric model construction of the reciprocating compressor rotor system comprising a crankshaft, the equivalent coupler, the equivalent flywheel, a motor shaft and a equivalent motor rotor; and using the general ANSYS finite element calculation software for replacing the original special analysis software, so that the calculation precision and the working efficiency of the torsional resonance of the reciprocating compressor rotor system are improved, and the method is not limited by the proprietary technical attribution of reciprocating compressor series products and can be widely applied in the industry.
Owner:SHENYANG POLYTECHNIC UNIV
Energy storage converter communication-line-free parallel strategy based on bus voltage event detection
ActiveCN111342494AEqual output reactive powerSolve the power sharing problem of multi-machine parallel connectionSingle network parallel feeding arrangementsPower oscillations reduction/preventionControl engineeringPower sharing
The invention discloses an energy storage converter communication line-free parallel strategy based on bus voltage event detection. The strategy comprises the steps: based on the background that the load end of the energy storage converter is close, acquiring a voltage signal of a PCC point common terminal as a common event signal; realizing the power sharing of each energy storage converter basedon a PCC voltage feedback method; based on the principle of an event detection mechanism, taking an event signal of PCC voltage as a synchronizing signal for realizing the voltage frequency recoveryof each energy storage converter, so the requirement of each energy storage converter on a communication interconnection line is avoided. The strategy control method is simple, practical, convenient to improve, good in system expansibility and low in construction cost of the interconnection-line-free multi-machine parallel system, and has a more practical engineering application value.
Owner:XI AN JIAOTONG UNIV
AGV carrying robot for copper foil reel conveying
ActiveCN111391938AImprove mobilityHigh degree of automationLifting devicesVehiclesCopper foilVisual navigation
The invention discloses an AGV carrying robot for copper foil reel conveying. The robot comprises a chassis structure; a visual navigation sensor is arranged at the bottom of the chassis structure, wheel driving systems are arranged at the front position and the rear position of the chassis structure respectively, a lifting system is arranged on each wheel driving system, a controller is further arranged in the chassis structure, and the controller controls the wheel driving systems and the lifting systems to operate. The AGV carrying robot has the capabilities of quick positioning and heavy-load lifting, dangerous factors in work of workers are eliminated, that the production process is stably and smoothly carried out, the labor force is liberated, and mechanical and automatic productionis realized.
Owner:XIAN UNIV OF TECH
HTML5 (hypertext markup language5) based vehicle platform interaction method
InactiveCN106790568AAvoid arbitrary callsImprove portabilityTransmissionCommunication interfaceHTML5
The invention discloses an HTML5 (hypertext markup language5) based vehicle platform interaction method. The method comprises steps as follows: S1, a javascript interface is created by a client, coupled with an HTML5 application and used for providing a background server access interface when an HTML5 application request accesses a vehicle platform; S2, a background service interface is created by a server, coupled with a system function service interface of the vehicle platform and used for completing access of HTML5 program to the vehicle platform according to request information. According to the method, the communication interface of the HTML5 program and the background is additionally created, so that an internal structure of a browser is not required to be modified, the transportability is high; besides, with the adoption of the external interface for communication, safety is improved, meanwhile, the communication interface can be remotely debugged, and upgrading and improvement are facilitated.
Owner:THUNDER SOFTWARE TECH
High-frequency time-division multi-target microwave wireless energy transmission system
The invention discloses a high-frequency time-division multi-target microwave wireless energy transmission system, relates to a microwave wireless energy transmission and phased array multi-target directional radiation technology, and belongs to the technical field of power generation, power transformation or power distribution. According to the method, a multi-target microwave wireless energy transmission system which is simple and easy to use and transmits energy to multiple targets at the same time is provided based on a phased array directional radiation technology, and a high-frequency control signal is used for forcibly switching beam angles on the basis of realizing respective directional radiation on a single target; in addition, the invention discloses a power transmitting and distributing algorithm based on the hardware transmitting scheme, required power is accurately provided for each energy receiving target, and each energy receiving target simultaneously receives stable direct-current voltage with the required power in a time domain by using a specially-designed filter. The scheme provided by the invention has the advantages of simple and easy-to-implement control structure, good directional radiation effect, high transmission efficiency and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A signal generating device and method for an arbitrary waveform generator
ActiveCN109814656BImprove adaptabilityImprove cohesionDigital function generatorsEngineeringAnalog signal
The invention discloses a signal generation device and method for an arbitrary waveform generator. The signal generation device and method can generate various different signals according to the needsof a user. The device comprises an application layer which is used for configuring signal generation parameters, generating a unified interface file from the configured parameters and outputting theunified interface file to a function module layer; the function module layer used for reading the interface file, analyzing the configured parameters, generating a required signal by utilizing a function function, storing the signal as a plurality of binary files, and outputting the binary files to the driving layer; a driving layer used for transmitting the data in the binary file to the operating system layer; and the operation system layer used for generating a trigger output pulse signal according to the waveform output trigger mode, converting the received data into an analog signal, carrying out waveform conditioning and gain control on the analog signal to obtain an adjusted required signal, and outputting the adjusted required signal.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
Cage structure fiber-based terahertz time-domain spectroscopy system with waveguide test module
The invention provides a cage-structured fiber-based terahertz time-domain spectroscopy system provided with a waveguide test module. The system comprises a cage structure I, wherein the cage structure I comprises a cage structure I transmitting terminal and a cage structure I receiving terminal; a transmitting antenna, a transmitting terminal collimating lens and a transmitting terminal focusing lens are arranged on the cage structure I transmitting terminal sequentially; a receiving terminal collimating lens, a receiving terminal focusing lens and an exploring antenna are arranged on the cage structure I receiving terminal sequentially; a cage structure II is arranged between the cage structure I transmitting terminal and the cage structure I receiving terminal and comprises a cage structure II transmitting terminal connected with the cage structure I transmitting terminal and a cage structure II receiving terminal connected with the cage structure I receiving terminal, and the waveguide test module is arranged between the cage structure II transmitting terminal and the cage structure II receiving terminal. The waveguide test module is integrated in the cage structure of the fiber-based terahertz time-domain spectroscopy system, so that waveguides can be centered and aligned reliably and stably, and the system is stable in structure, convenient to adjust and test and high in reliability and integrity.
Owner:张亚妮
Method and system for constructing non-progressive screen dots
InactiveCN102075664BEnhance vibrancyReduce usageScreening processesPictoral communicationVisual perceptionComputer science
The invention relates to a method and system for constructing non-progressive screen dots, belonging to the field of printing and publishing. Multiple layers of annularly embedded non-progressive screen dots are generated through a defined function cluster F, a direct network-hanging method or screen dot optimizing method by using collimation errors that deep color is easy to invade light color on the vision of the human body on the basis of network hanging of the non-progressive screen dots. By adopting the method and the system disclosed by the invention, the printing effect is bright, the progressive effect is smooth and thin, and the new screen dot greatly reduces the continuous area of ink, therefore, the ink consumption is greatly lowered, the printing cost is saved and the environment is protected.
Owner:PEKING UNIV +1
A signal generation device and method for an arbitrary waveform generator
ActiveCN109814656AImprove adaptabilityImprove cohesionDigital function generatorsOperational systemAnalog signal
The invention discloses a signal generation device and method for an arbitrary waveform generator. The signal generation device and method can generate various different signals according to the needsof a user. The device comprises an application layer which is used for configuring signal generation parameters, generating a unified interface file from the configured parameters and outputting theunified interface file to a function module layer; the function module layer used for reading the interface file, analyzing the configured parameters, generating a required signal by utilizing a function function, storing the signal as a plurality of binary files, and outputting the binary files to the driving layer; a driving layer used for transmitting the data in the binary file to the operating system layer; and the operation system layer used for generating a trigger output pulse signal according to the waveform output trigger mode, converting the received data into an analog signal, carrying out waveform conditioning and gain control on the analog signal to obtain an adjusted required signal, and outputting the adjusted required signal.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
High-performance embedded camera system based on general-purpose CPU of x86 platform
ActiveCN105578012BLower requirementReduce development difficultyTelevision system detailsColor television detailsInformation processingComputer architecture
Owner:FUJIAN FORECAM OPTICS CO LTD
Autonomous hovering control system and method for quadrotor unmanned aerial vehicle based on dsp
ActiveCN103365295BLow costEasy to replacePosition/course control in three dimensionsFly controlBrushless motors
The invention discloses a DSP (Digital Signal Processor)-based quad-rotor unmanned aerial vehicle autonomous hover control system and method. The control system is provided with four screw propellers and control units which are arranged on four airfoils respectively; and each control unit is that a master control unit is connected to a ground computer through a wireless network, and a receiver is connected with a signal conversion module and a manual / automatic switching chip in sequence, transmits a received signal transmitted by a remote controller into the manual / automatic switching chip through the signal conversion module, is also connected with the manual / automatic switching chip through the master control unit and is used for transmitting the received signal to the manual / automatic switching chip through the master control unit for controlling driving units to drive direct current brushless motors on the four screw propellers to work. According to the method, kalman filtering processing is performed on sonar data to obtain accurate height data and driver control. According to the system and the method, the autonomous flight capacity of a micro quad-rotor unmanned aerial vehicle and the adaptability to the environment can be effectively enhanced, and the autonomous flight control under indoor environments and outdoor environments can be finished.
Owner:TIANJIN UNIV
Parallel strategy for energy storage converters without communication lines based on bus voltage event detection
ActiveCN111342494BSolve the power sharing problem of multi-machine parallel connectionReduce construction costsSingle network parallel feeding arrangementsPower oscillations reduction/preventionConvertersEngineering
The invention discloses an energy storage converter non-communication line parallel strategy based on bus voltage event detection. The control strategy is based on the background that the load end of the energy storage converter is close, and obtains the voltage signal of the common end of the PCC point as a common event. Signal, based on the PCC voltage feedback method to realize the power sharing of each energy storage converter, based on the principle of event detection mechanism, use the event signal of PCC voltage as the synchronization signal for each energy storage converter to achieve voltage frequency recovery, thus The requirement for communication interconnection lines between the energy storage converters is avoided. The strategy control method is simple and practical, easy to improve, and has good system scalability. The construction cost of a multi-machine parallel system without interconnection lines is low, and it has relatively practical engineering application value.
Owner:XI AN JIAOTONG UNIV
A kind of method for vanadium extraction industrial acid wastewater treatment and valuable metal comprehensive recovery
ActiveCN105567976BControl parameters are clearly definedEasy to controlCalcium/strontium/barium sulfatesCement productionWastewaterBarium sulfide
Owner:SHENGTONG YIHE TIANJIN ENTERPRISE MANAGEMENT CONSULTING CO LTD
Control device and method of remote monitoring function of integrated hydraulic machine
InactiveCN104950763ATimely monitoringAccurate monitoringProgramme controlComputer controlComputer hardwareMachine control
The invention discloses a control device and a control method of a remote monitoring function of an integrated hydraulic machine. The control device comprises an input module, an output module, a CPU (Central Processing Unit) module, a message sending module, a remote information platform and a communication network, wherein the input module is used for collecting state information of the monitoring end of the hydraulic machine and transmitting to the CPU module in real time; the output module is used for transmitting a control signal of the CPU module to the hydraulic machine; the CPU module is used for performing analytical judgment on the collected state information of the hydraulic machine, so as to control the hydraulic machine to normally operate and transmit the state information of the hydraulic machine to the message sending module; the message sending module is used for sending the state information of the hydraulic machine to the remote information platform in the form of messages; the remote information platform is used for receiving message information of the hydraulic machine and identifying and reading the state of the hydraulic machine; the communication network is used for realizing message communication of the message sending module and the remote information platform. A simple message sending mode is used for replacing a mode that technicians are assigned to a user industrial field to monitor the state information of the hydraulic machine. The degree of automation of a hydraulic machine control system is greatly increased.
Owner:HEFEI METALFORMING MACHINE TOOL
Alarm anti-theft electric vehicle charger
InactiveCN104836312BNo problem with many false positivesDo Not Steal, Do Not DisturbBatteries circuit arrangementsAnti-theft cycle devicesLow voltageEngineering
Owner:郭喜明
Circuit control board system of electric welding machine and its electric welding machine
ActiveCN103722319BClear structureSimple production processDc-dc conversionWelding/cutting auxillary devicesPower flowFull wave
The invention provides a circuit control board system of an electric welding machine. The circuit control board system comprises a control board and a master board, and the control board and the master board are connected through a flat cable; the master board comprises a switch power supply circuit, an input voltage judging circuit, a voltage doubling rectifying filter circuit, a rectifying filter circuit, an inverter circuit, a transformer, a full-wave rectifying circuit, a current feedback circuit and a voltage feedback circuit. The invention further provides the electric welding machine. The electric welding machine and the circuit control board system thereof have the advantages that the electric welding machine is simple and clear in structure; production process is simplified, production hours are shortened, and production cost is reduced; connection relation is simple, and some key connection leads are replaced by copper foils, so that a fool-proof function can be achieved, and the probability of production errors is reduced; interferences by clustering of traditional connection leads are reduced by the simple connection relation; functional modules are individually laid out, so that test and maintenance are facilitated; the whole system of the electric welding machine is modularized, so that operations such as improving and upgrading of the electric welding machine are facilitated.
Owner:SHANGHAI GREATWAY WELDING EQUIP
An agv handling robot for copper foil reel delivery
ActiveCN111391938BImprove mobilityEasy to assembleLifting devicesVehiclesCopper foilVisual navigation
The invention discloses an AGV handling robot for copper foil reel transportation, which includes a chassis structure, a visual navigation sensor is arranged at the bottom of the chassis structure, and wheel drive systems are respectively arranged at the front and rear positions of the chassis structure, and each wheel drive system is equipped with A lifting system is provided, and a controller is provided inside the chassis structure, and the controller controls the operation of the wheel drive system and the lifting system. The invention has fast positioning and heavy-load lifting capabilities, eliminates risk factors in workers' work, ensures stable and smooth production process, liberates labor force, and realizes mechanized and automated production.
Owner:XIAN UNIV OF TECH
A magnetic field generation method for testing the dynamic characteristics of giant magnetoresistance sensors
InactiveCN104344845BConducive to in-depth researchAchieving a modular designPermanent magnetsInstrumentsMeasuring instrumentDynamic testing
The invention provides a magnetic field generating method used for the dynamic feature test of a giant magnetoresistance sensor. The method comprises the following steps that 1, the axial space of magnets and the test point position are determined by two permanent magnets; 2, a displacement scale plate is arranged along a catheter, a movable magnet is moved for measuring the magnetic field intensity of the test point, and a function relationship H(s) between the relative displacement of the movable magnet and the magnetic field intensity is built; 3, a power source is used for driving the movable magnet, and the dynamic magnetic field with the magnetic field intensity changed along with the time is generated; 4, a laser speed measuring instrument is arranged on the side surface of the catheter, the moving speed of the movable magnet in the catheter is measured in real time, and the function relationship s(t) between the relative displacement and the time is built; 5, the s(t) and the H(s) are used for deducing and building a mathematic model Ht(t) with the dynamic magnetic field changed along with the time, and the magnetic field quantity measurement direction displacement measurement conversion is realized; 6, the power dimension of the power source is changed, and the dynamic magnetic field meeting the dynamic characteristic test requirements of the giant magnetoresistance sensor is generated. The method has the advantages that the modularized design of the device is realized, and the device can be favorably improved and upgraded.
Owner:BEIHANG UNIV
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