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41results about How to "Save software and hardware resources" patented technology
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Message pushing method, device and system
ActiveCN103685502AAvoid interferenceSave software and hardware resourcesTransmissionCommerceUser identifierComputer science
Owner:TENCENT TECH (SHENZHEN) CO LTD
Urban traffic situation identification method based on directed graph convolutional neural network
ActiveCN111540198AImprove universalitySimple processDetection of traffic movementCharacter and pattern recognitionDirected graphRoad networks
The invention discloses an urban traffic situation identification method based on a directed graph convolutional neural network. The method comprises the steps: carrying out the traffic situation classification of historical traffic flow information, converting an urban road network into a directed graph according to a point-edge conversion rule, and extracting a corresponding sub-graph; then, calculating the weight of a directed edge and the weight between non-directly connected nodes, standardizing the number of nodes of the subgraph, and calculating a traffic information matrix and a feature matrix of the subgraph; finally, designing a traffic directed graph convolutional neural network model, performing training and testing, using the model for classifying real-time traffic flow information to identify the real-time traffic situation of all road sections. According to the method, the incidence relation between directed road sections of different levels and different grades under the hybrid road network is fully considered, a unified standardized model input and traffic situation recognition model is designed, and good universality is achieved; moreover, the method has the characteristics of simple process, easiness in calculation, easiness in programming realization and the like, and can be suitable for complex urban road networks.
Owner:ZHEJIANG UNIV OF TECH
Control method and control device for starting white balance adjustment
ActiveCN101577831AAvoid misjudgmentImprove reliabilityColor signal processing circuitsComputer scienceColor temperature
The invention discloses a control method and a control device for starting white balance adjustment. The invention utilizes a motion detection to obtain background areas of two continuous frame images, respectively calculates colourity average value of the background areas in the two continuous frame images; if the difference of the colourity average value of the background areas in the two continuous frame images is larger than or equal to a preset first threshold value, the colourity average value of the background areas in the two continuous frame images changes obviously is shown; the colourity average value of the background areas in the two continuous frame images is generally influenced only by actual light source property, thus being capable of judging that the actual light sourceproperty changes and triggering the starting of the white balance adjustment. Therefore, when a moving object in the image has influence on the colourity average value of the whole frame image, misjudgment whether the actual light source property changes can be avoided, thus being capable of avoiding triggering the white balance adjustment when the color temperature of the actual light source doesnot change, also being capable of avoiding that the white balance adjustment is not triggered when the color temperature of the actual light source changes. Therefore, the invention can improve the reliability of the white balance adjustment.
Owner:BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
Spherical phased array single pulse digital tracking system
PendingCN110045361ASimple designEasy to implementRadio wave reradiation/reflectionVector trackingClosed loop feedback
The invention proposes a spherical phased array single pulse digital tracking system and aims to provide a sum-difference beam tracking system without tracking phasing and with the capability of improving the over-top tracking performance. The system is implemented according to the following technical scheme: vector tracking angle error extraction equipment is used for extracting azimuth difference voltage and pitching difference voltage according to the sum, azimuth difference and pitching difference beam digital signals, a direction vector in the current three-dimensional cartesian coordinate system is converted into an error voltage of each component of the vector, which is sent into an angle tracking loop for vector tracking; the vector angle tracking equipment is used for expressing the current target azimuth and the pitching as the direction vector in the three-dimensional cartesian coordinate system, the error voltage of each component of the direction vector extracted in the three-dimensional cartesian coordinate system is sent into the angle tracking loop for vector tracking, the direction vector output by the tracking loop is converted into azimuth and pitching values obtained by tracking, which are fed back to all-digital single-pulse sum-difference beam forming equipment to achieve closed-loop feedback of target direction vector tracking.
Owner:10TH RES INST OF CETC
Electromagnetic valve driving device capable of bearing high frequency switching loss
ActiveCN102996274AImprove driving abilitySimple structureOperating means/releasing devices for valvesElectrical controlCapacitancePeak value
The invention provides an electromagnetic valve driving device capable of bearing high frequency switching loss. The electromagnetic valve driving device comprises an MCU (Microprogrammed Control Unit), and further comprises a high-end switch tube driving circuit, a current peak value limiting circuit, a low-end gate circuit, a low-end current sampling circuit, a current short-circuit protective circuit, a current modulator circuit, a high voltage switch tube, a plurality of high-end driving braches, a gating switch tube, a first diode, a second diode, a third diode and a sampling resistor. Each high-end driving branch comprises a modulation switch tube, a fly-wheel diode and an electromagnetic valve of an oil atomizer connected with the modulation switch tube in series. The current short-circuit protective circuit comprises a first not gate, a first or gate, a first comparator, a nineteenth resistor, a twentieth resistor, a tenth resistor and a tenth capacitor. The current peak value limiting circuit comprises a second not gate, a second or gate, a second comparator, an output or gate, a twenty-first resistor, a twenty-second resistor, a twentieth resistor and the twentieth capacitor. The electromagnetic valve driving device capable of bearing high frequency switching loss provided by the invention is used to drive the electromagnetic valve of the oil atomizer.
Owner:CHINA FIRST AUTOMOBILE
Information processing method based on communication & social application, relevant device and system
ActiveCN104753911AImprove efficiencyImprove intelligenceCommerceData switching networksInformation processingCommunications server
A server system with processor (s) and memory obtains order information for a transaction of goods or services initiated by a user of a social networking platform and obtains a request from the user to share the transaction with a selected group of users of the social networking platform, where the selected group of users includes the user. In response to obtaining the request, the method server system: generates a message based on the order information, where the message includes one or more user interface elements that enable users of the selected group of users to purchase the goods or services included in the transaction initiated by the first user within a user interface of the social networking platform; and publishes the message with the one or more user interface elements to a section of the social networking platform that is designated for access by the selected group of users.
Owner:TENCENT TECH (SHENZHEN) CO LTD +1
Embedded operating system task switching method and unit
InactiveCN101290590AImprove efficiencySave software and hardware resourcesProgram initiation/switchingEmbedded operating systemOperating system
Owner:VIMICRO CORP
Method and system for realizing simulation 3D scene desktop
InactiveCN104346054ASave software and hardware resourcesBroad application prospectsInput/output processes for data processing3d imageImage layer
A method for realizing a simulation 3D scene desktop includes: entering the scene desktop; detecting a slide gesture; allowing a near view image layer, a middle image layer and a distant view image layer to simultaneously move along with the slide gesture in the slide direction of the slide gesture at a first speed, a second speed and a third speed respectively so as to form a simulation 3D desktop effect, wherein the first speed is larger than the second speed, and the second speed is larger than the third speed. A system for realizing the simulation 3D scene desktop is characterized by comprising a scene desktop entering module, a slide gesture detecting module and a simulation 3D desktop effect management module. The method and the system have the advantages that the scene desktop with comparable 3D visual effects can be created without hardware configuration upgrading and a 3D image rendering engine, charming and dazzling visual effects are created while limited software and hardware resources are saved, and brand new contextualized interaction operation experience is brought to users.
Owner:VIVO MOBILE COMM CO LTD
Constant current driving system and constant current driving method for stepping motor with fixed duty ratio
ActiveCN105553357ASimple designSave software and hardware resourcesDynamo-electric converter controlCurrent sensorDistributor
The invention relates to the technical field of motor control, and particularly relates to a constant current driving system and a constant current driving method for a stepping motor with a fixed duty ratio. The system comprises a control unit, a driving circuit, a power circuit, a stepping motor, a current sensor and a protection circuit, wherein the control unit comprises a pulse distributor, a PWM generator and a logic arithmetic unit. The system is characterized in that the control unit also comprises a comparator, wherein the comparator, comprises an input positive end, an input negative end and an output end; the input negative end is connected with a stepping motor winding current given value; the input positive end is connected with the current sensor for receiving a stepping motor winding current feedback value; and the output end is connected with the logic arithmetic unit. The structure of the system is simple, the operation process is simple and convenient, the manufacturing cost is low, a fixed-duty ratio PWM signal is used for carrying out constant current driving on the motor, and the high-performance control on the motor is realized.
Owner:XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
Method for determining iron and steel enterprise energy integrated dispatching feasible solution
ActiveCN104268789ASave time resourcesSave software and hardware resourcesData processing applicationsManufacturing computing systemsUnit deviceEngineering
The invention provides a method for determining an iron and steel enterprise energy integrated dispatching feasible solution, and the method is suitable for the technical field of iron and steel enterprise energy dispatching. The method includes the steps that an energy medium pipe network information set E, a unit device information set psi and a variable set X corresponding to the input variables or the output variables of all unit devices are built; the variables of the unit devices which are not directly related to one another in the variable set or the variables which cannot be obtained according to the input / output variable are judged as free variables; whether the free variables of the unit devices corresponding to gas energy media and steam and power energy media meet the initial values within the top and bottom limitation ranges corresponding to the free variables or not are determined respectively; the values of the non-free variables are determined according to the correlation of the free variables and the non-free variables in the variable set; whether the values of the variables in the variable set meet the process model constraint of the unit devices or not is judged, and if yes, the variable values are recorded, and a feasible solution is output; if not, the values of the variable which violate the constraint in the variable set are adjusted, and judgment is conducted again. The method solves the technical problem of searching for the iron and steel enterprise energy integrated dispatching feasible solution.
Owner:WISDRI ENG & RES INC LTD
Full-speed range position sensorless improvement control method of large-power hub motor
InactiveCN110176894AGuaranteed uptimeGood position recognition accuracyAC motor controlElectric motor controlControl systemPermanent magnet synchronous motor
The invention discloses a full-speed range position sensorless improvement control method of a large-power hub motor, and belongs to the field of a motor control method. The full-speed range positionsensorless improvement control method comprises the following steps of S1, building an MTPA and weak flux control-based hub motor vector control system; S2, building a position sensorless identification system of an MRAS combined with position sensorless; S3, designing a variable-weight weighing switching method; S4, building a given torque-based position sensorless permanent-magnet synchronous motor vector control system; S5, building a simulation model of the position sensorless permanent-magnet synchronous motor vector control system, and performing simulation verification; S6, improving and designing the switching method; S7, testing convergence of two switching algorithms during abrupt running, and performing algorithm simulation; and S8, verifying the identification performance of the improved algorithm within a full-speed range. By switching of two position identification algorithms, the working zone of the two algorithms is reduced on the basis of ensuring identification accuracy, and software and hardware resources are saved.
Owner:ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
Method for OFDM communication system to transmit and receive frame prefix
ActiveCN101686218ASave software and hardware resourcesSave resourcesError preventionMulti-frequency code systems24-bit48-bit
The invention relates to a method for OFDM system to transmit and receive frame prefix. The transmitting method includes that: a base station firstly assembles frame prefix information into package, so as to obtain original 24 bits; then additional 24 bits are calculated and forms 48 bits required by frame prefix coding with the original 24 bits; coding, modulating and four times repetition are carried out on the bit stream of the 48 bits, and the 48 bits are mapped into four sub channels to be transmitted; the receiving method includes that: a receiving terminal firstly extracts corresponding data in four channels, and demodulating, decoding and de-interlacing are carried out on the data to obtain bit stream of the 48 bits; then verification 24 bits are calculated; the verification 24 bits are compared with the rear 24 bits of the 48 bits, if coincident, decoding is correct, frame configuration information is reported to high layer; or else, decoding is error, and an error message isreturned to the base station. The invention can save system soft hardware resource while the receiving terminal analyzes error.
Owner:ZTE CORP
General LDPC decoder
ActiveCN101977063AIncrease flexibilityImprove compatibilityError correction/detection using multiple parity bitsLow-density parity-check codeComputer science
The invention discloses a general LDPC (low-density parity check code) decoder, which comprises a dispatching module, an input module, a decoding module and an output module. The input module, the decoding module and the output module work independently under the control of the dispatching module by adopting a mode of a state machine, wherein the decoding module has general hardware design and can decode LDPC of different lengths.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
OPC (optical proximity correction) Method
ActiveCN108009316AImplement preprocessingShorten operation timeOriginals for photomechanical treatmentSpecial data processing applicationsGraphicsComputer science
The invention discloses an OPC (optical proximity correction) method, comprising the steps of I, summarizing known hotspot figures and making a conclusion; II, summarizing processing methods of the known hotspot figures, and making a conclusion; III, formulating recognition rules for the known hotspot figures and potential hotspot figures; IV, formulating preprocessing rules to preprocessing the known hotspot figures and potential hotspot figures; V, subjecting a newly designed mask layout to recognition of known hotspot figures and potential hotspot figures, preprocessing the recognized knownhotspot figures and potential hotspot figures, and subjecting the preprocessed newly-designed mask layout to OPC. The OPC method has the advantages that the quantity of hotspots subjected to OPC canbe decreased or eliminated, and therefore, time of OPC engineers, OPC operation time and software-hardware resources can be saved.
Owner:SHANGHAI HUALI MICROELECTRONICS CORP
Shopping right and interest object information processing method and device and electronic equipment
PendingCN111127058AIncrease success rateSave software and hardware resourcesDiscounts/incentivesBuying/selling/leasing transactionsInformation processingTerminal equipment
Embodiments of the invention disclose a shopping right and interest object information processing method and device and electronic equipment. The method comprises the steps of providing a first operation option for initiating order sharing for shopping right and interest object information; after a user operation request is received through the first operation option, displaying a shared electronic shopping cart interface associated with the shopping right and interest object, wherein the shared electronic shopping cart interface comprises a second operation option used for adding a commodityobject and a third operation option used for inviting a user to join in order sharing; receiving a user operation request through the third operation option; submitting to a server, generating order combining invitation information about the shopping right and interest object by the server, and providing a fourth operation option for joining in order combining, so that the invited user can enter ashared electronic shopping cart interface associated with the shopping right and interest object through the fourth operation option. Through the embodiment of the invention, network resources and local software and hardware resources of the terminal equipment can be saved, and the success rate of order combination is improved.
Owner:ALIBABA GRP HLDG LTD
Method and system for realizing hybrid access of camera and video platform
InactiveCN107800999AAchieving hybrid accessSave software and hardware resourcesClosed circuit television systemsTransmissionComputer graphics (images)Maintainability
The embodiment of invention provides a method and for realizing hybrid access of a camera and a video platform. The method comprises the following steps: acquiring an access instruction of accessing atarget camera by an external system; judging whether the target camera is a camera in a video platform according to the access instruction; if the target camera is the camera in the video platform, determining an interface protocol of the video platform located by the target camera according to the access instruction, and sending the access instruction to the video platform located by the targetcamera according to the access protocol of the video platform located by the target camera; otherwise, determining the interface protocol of the target camera according to the access instruction, andsending the access instruction to the target camera according to the interface protocol of the target camera. By prejudging the access instruction of the external system, the access instruction is sent to the camera or the video platform according to the judgment result or the preconfigured interface protocol, thereby realizing the hybrid access of the camera and the video platform, the software and hardware resource input for constructing the system is reduced, and the stability and the maintainability of the system are improved.
Owner:QINGDAO HISENSE TRANS TECH
Method and device for measuring WCDMA system downlink power controlled signal-interference ratio
ActiveCN101137165AHigh measurement accuracySave software and hardware resourcesRadio/inductive link selection arrangementsRadio transmission for post communicationData streamMeasurement device
The invention provides a method for measuring downchain SIR of WCDMA system, including: (1) pilot symbols are extracted from data flow in a special physical channel, and pilot symbols of all paths are combined; (2) the incorporated pilot symbols are transfered to one quadrant; (3) signal power and interference signal power for calculating SIR are calculated, and SIR measured value is obtained according to the calculated power. A measuring device for wideband code multiplex downchain SIR comprises N pilot symbol separator, the extracted pilot symbols are sent into a pilot symbol combiner, the combined pilot symbols are transfered by a pilot symbol coherent device to one quadrant, then corresponding power can be calculated by a signal power measurer and an interference signal power measurer, and input into a SIR calculator, the SIR is calculated.
Owner:SANECHIPS TECH CO LTD
Secret key generation method and data processing method, device and system based on secret key generation method
PendingCN114513779AImprove securitySave software and hardware resourcesParticular environment based servicesVehicle wireless communication serviceKey generationInternet of Things
The invention relates to an information security technology, in particular to a key generation method based on physical layer channel characteristics, a data processing method using the key generation method, and client equipment, an Internet of Things system and a computer readable storage medium which implement the key generation method. The key generation method according to one aspect of the invention comprises the following steps: A, determining a pilot frequency training sequence sent between first equipment and second equipment based on coherence time of wireless communication between the first equipment and the second equipment; b, extracting channel characteristics by a pilot frequency training sequence sent by a second device to generate a first initial key, and sending the determined pilot frequency training sequence to the second device, so that the second device can generate a second initial key in the same mode as the mode of generating the first key; and C, using a key negotiation mechanism between the first device and the second device to determine a common key of the first device and the second device according to the first initial key and the second initial key.
Owner:CHINA UNIONPAY
Method and device for measuring WCDMA system downlink power controlled signal-interference ratio
ActiveCN101137165BHigh measurement accuracySave software and hardware resourcesRadio transmission for post communicationWireless communicationData streamMeasurement device
The invention provides a method for measuring downchain SIR of WCDMA system, including: (1) pilot symbols are extracted from data flow in a special physical channel, and pilot symbols of all paths arecombined; (2) the incorporated pilot symbols are transfered to one quadrant; (3) signal power and interference signal power for calculating SIR are calculated, and SIR measured value is obtained according to the calculated power. A measuring device for wideband code multiplex downchain SIR comprises N pilot symbol separator, the extracted pilot symbols are sent into a pilot symbol combiner, the combined pilot symbols are transfered by a pilot symbol coherent device to one quadrant, then corresponding power can be calculated by a signal power measurer and an interference signal power measurer,and input into a SIR calculator, the SIR is calculated.
Owner:SANECHIPS TECH CO LTD
Operation method and device of mobile terminal
InactiveCN106681630ASave software and hardware resourcesImprove efficiencyInput/output processes for data processingEmbedded systemHand operations
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD
Method for simply and wirelessly matching computer and temote USB (universal serial bus) peripheral
InactiveCN103699510AReduce hierarchySave software and hardware resourcesElectric digital data processingData transmissionPeripheral
The invention discloses a method for simply and wirelessly matching a computer and a remote USB (universal serial bus) peripheral. The method comprises the following steps of (1) establishing a wireless protocol simple bridging physical structure: respectively connecting a pair of wireless transmitter and wireless receiver onto a computer USB port and a USB port of a remote USB peripheral; (2) realizing the data transmission and receiving between the computer and the computer remote USB peripheral on the basis of a transmission protocol stack comprising a computer application layer, a device drive layer, a USB protocol layer and the remote USB peripheral. In the method, the wireless receiver-transmitter is only used as a relay, so that the peripheral is equivalent to the wireless peripheral device of the computer; all USB signaling and data are carried by the wireless protocol, the data relay is transparent through the matching conversion of a USB logic passage and a wireless logic passage, and all signaling and data can be nondestructively and directly transmitted through the wireless protocol. By adopting the method, few protocol stack layers are needed, the communication protocol is simplified, and the high-speed wireless transmission between the computer and the remote USB peripheral can be realized.
Owner:林剑颖
Service information acquisition method, equipment and system
ActiveCN102170631BAchieve standardizationAchieve sharingNetwork data managementService informationSystem identification
The invention provides a service information acquisition method, service information acquisition equipment and a service information acquisition system. The method comprises the following steps of: receiving an access request comprising a system identification code from a user terminal, and if the system identification code is judged to be included according to a plurality of stored file lists comprising the system identification codes, transmitting a corresponding file list according to a text format supported by the user terminal; receiving an installation packet downloading request of a service system selected according to the file list, and transmitting a corresponding installation packet according to the text format; and receiving a transmitted login request, transmitting the login request to the service system according to a communication protocol supported by the service system, and transmitting service information provided by the service system to the user terminal according to the text format. By the service information acquisition method, the service information acquisition equipment and the service information acquisition system provided by the invention, the sharing of service system server resources of different enterprises and the standardization of the user terminal are realized, and a large number of software and hardware resources are saved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD +1
General LDPC decoder
ActiveCN101977063BIncrease flexibilityImprove compatibilityError correction/detection using multiple parity bitsLow-density parity-check codeComputer science
The invention discloses a general LDPC (low-density parity check code) decoder, which comprises a dispatching module, an input module, a decoding module and an output module. The input module, the decoding module and the output module work independently under the control of the dispatching module by adopting a mode of a state machine, wherein the decoding module has general hardware design and can decode LDPC of different lengths.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
A message response method, device and system
ActiveCN104144108BReduce stepsSave operating timeData switching networksSpecial data processing applicationsVoice communicationResponse method
Embodiments of the present invention provide a message response method, device, and system, wherein the method includes: when the first terminal collects a voice message in a voice communication application, converting the voice message into a text message, and according to the converted The obtained text message sends a search request and the voice message to the server; the server obtains the search keyword from the search request, and searches to obtain a response message associated with the search keyword; When the message is a session interaction message, send the response message and the voice message to the second terminal corresponding to the session established with the first terminal; after the second terminal receives the voice message, if The play instruction of the voice message is to play the voice message and display the response message as the conversation interaction message. The present invention can directly provide response messages for users based on the messages sent by users, so as to meet the needs of users for automation and intelligence.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Method for OFDM communication system to process frame prefix
ActiveCN101686218BSave software and hardware resourcesSave resourcesError preventionMulti-frequency code systems24-bit48-bit
The invention relates to a method for OFDM system to transmit and receive frame prefix. The transmitting method includes that: a base station firstly assembles frame prefix information into package, so as to obtain original 24 bits; then additional 24 bits are calculated and forms 48 bits required by frame prefix coding with the original 24 bits; coding, modulating and four times repetition are carried out on the bit stream of the 48 bits, and the 48 bits are mapped into four sub channels to be transmitted; the receiving method includes that: a receiving terminal firstly extracts correspondingdata in four channels, and demodulating, decoding and de-interlacing are carried out on the data to obtain bit stream of the 48 bits; then verification 24 bits are calculated; the verification 24 bits are compared with the rear 24 bits of the 48 bits, if coincident, decoding is correct, frame configuration information is reported to high layer; or else, decoding is error, and an error message isreturned to the base station. The invention can save system soft hardware resource while the receiving terminal analyzes error.
Owner:ZTE CORP
A kind of information processing method, related device and system based on social application
ActiveCN104753911BImprove efficiencyImprove intelligenceTransmissionCommerceInformation processingPayment
Owner:TENCENT TECH (SHENZHEN) CO LTD +1
Control method and control device for starting white balance adjustment
ActiveCN101577831BAvoid misjudgmentImprove reliabilityColor signal processing circuitsComputer scienceColor temperature
The invention discloses a control method and a control device for starting white balance adjustment. The invention utilizes a motion detection to obtain background areas of two continuous frame images, respectively calculates colourity average value of the background areas in the two continuous frame images; if the difference of the colourity average value of the background areas in the two continuous frame images is larger than or equal to a preset first threshold value, the colourity average value of the background areas in the two continuous frame images changes obviously is shown; the colourity average value of the background areas in the two continuous frame images is generally influenced only by actual light source property, thus being capable of judging that the actual light sourceproperty changes and triggering the starting of the white balance adjustment. Therefore, when a moving object in the image has influence on the colourity average value of the whole frame image, misjudgment whether the actual light source property changes can be avoided, thus being capable of avoiding triggering the white balance adjustment when the color temperature of the actual light source doesnot change, also being capable of avoiding that the white balance adjustment is not triggered when the color temperature of the actual light source changes. Therefore, the invention can improve the reliability of the white balance adjustment.
Owner:BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
A file scanning method, device and intelligent terminal
ActiveCN107247722BImprove scanning efficiencySave software and hardware resourcesComputer security arrangementsFile access structuresSoftware engineeringDirectory
Embodiments of the present disclosure provide a method and an apparatus for scanning files and an intelligent terminal. The method includes: performing a first scan processing on a target directory according to a first processing strategy to obtain a target file meeting a processing condition preset in the first processing strategy; and determining a file identification of the target file, searching for a file data size value corresponding to the file identification in preset record information, and returning the file data size value, in which the preset record information comprises at least file identifications of files contained in the target directory and file data size values corresponding to the files contained in the target directory.
Owner:BEIJING KINGSOFT INTERNET SECURITY SOFTWARE CO LTD
Electromagnetic valve driving device capable of bearing high frequency switching loss
ActiveCN102996274BImprove driving abilitySimple structureElectrical controlOperating means/releasing devices for valvesCapacitancePeak value
The invention provides an electromagnetic valve driving device capable of bearing high frequency switching loss. The electromagnetic valve driving device comprises an MCU (Microprogrammed Control Unit), and further comprises a high-end switch tube driving circuit, a current peak value limiting circuit, a low-end gate circuit, a low-end current sampling circuit, a current short-circuit protective circuit, a current modulator circuit, a high voltage switch tube, a plurality of high-end driving braches, a gating switch tube, a first diode, a second diode, a third diode and a sampling resistor. Each high-end driving branch comprises a modulation switch tube, a fly-wheel diode and an electromagnetic valve of an oil atomizer connected with the modulation switch tube in series. The current short-circuit protective circuit comprises a first not gate, a first or gate, a first comparator, a nineteenth resistor, a twentieth resistor, a tenth resistor and a tenth capacitor. The current peak value limiting circuit comprises a second not gate, a second or gate, a second comparator, an output or gate, a twenty-first resistor, a twenty-second resistor, a twentieth resistor and the twentieth capacitor. The electromagnetic valve driving device capable of bearing high frequency switching loss provided by the invention is used to drive the electromagnetic valve of the oil atomizer.
Owner:CHINA FIRST AUTOMOBILE
Impedance balance degree analysis method of on-chip power combiner
ActiveCN110991134ASave software and hardware resourcesSave resourcesComputer aided designSpecial data processing applicationsPower combinerReal-time computing
The invention discloses an impedance balance degree analysis method of an on-chip power combiner. The method comprises the following steps: firstly, determining a circuit model represented by lumped elements according to an actual physical structure and the number of ports of the power combiner; then, an input port is connected to an alternating voltage exciter; other input ports are connected toa resistor, an output port is connected to a load, a current path is analyzed, the input impedance of the corresponding input port is calculated, an alternating current ground node is regarded as an intermediate node of the current path in the analysis process, the path of the current path is determined by searching the minimum branch current, and the impedance on the path is calculated; and finally, calculating the balance degree between the input ports according to the input impedance of each port and the expression of the balance degree. Compared with a traditional method that a large number of computers and time resources are needed for simulation analysis, when the method is used for analyzing the on-chip power combiner, the process is simpler and more convenient, consumed time is shorter, and the source of balance degree mismatch can be found.
Owner:SOUTHEAST UNIV +2
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