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61results about How to "Implementation delay" patented technology
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Intersection signal control method based on dynamic steering proportion estimation
ActiveCN103810869AImprove operational efficiencyImprove effective traffic capacityControlling traffic signalsTraffic capacityState space
The invention discloses an intersection signal control method based on a dynamic steering proportion estimation, and aims at a four phase control intersection. The intersection signal control method based on the dynamic steering proportion estimation includes: establishing a state space model based on Kalman filtering; designing an improved sequence Kalman filtering algorithm to solve an intersection dynamic steering proportion; further establishing a multiple target signal control model which minimizes delay and queuing length and maximizes effective traffic capacity based on the above two steps so as to solve a timing parameter and an evaluation index for a intersection real-time signal. Case researches show that the intersection signal control method based on the dynamic steering proportion estimation has high efficiency and accuracy, and can achieve real-time signal control of the intersection. In allusion to the current situation that a study of combining the dynamic steering proportion estimation with signal control is basically in a blank state, the intersection signal control method based on the dynamic steering proportion estimation has the advantages of being dynamic and timely, high in efficiency, high in accuracy, optimal in multiple targets, used on line and the like.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Signal interference canceller and signal interference canceling method
InactiveCN101404509AThe output amplitude is continuously adjustableStrong resistance to electromagnetic interferenceElectromagnetic transmissionTransmission noise suppressionOptical pathlengthElectromagnetic interference
The invention discloses a signal interference canceller and a signal interference cancelling method. The signal interference canceller converts an electric interference signal into an optical modulation signal and then transmits the signal to an optical delay line for changing the corresponding optical length passed by the optical signal, so as to realize the delaying of the optical signal and finally converts the optical signal to an electric signal, thereby realizing to transfer the phase of a RF electric signal by (2n+1)180 degrees; wherein, n is equal to 0, 1, 2, 3, and the like; finally the interference signal which affects useful signals is filtered by cancelling. The invention can effectively remove useless signals received by a receiving terminal during the process of multi-carrier transmission; moreover, the invention is characterized by high delaying precision and high electromagnetic interference resistance.
Owner:桂林航天光比特科技股份公司
Radar echo simulating method and radar echo signal simulator
ActiveCN104698445AImplementation delayAchieve modulationRadio wave reradiation/reflectionRadarAnalog signal
The invention provides a radar echo simulating method and a radar echo signal simulator. The method comprises the steps of receiving a radar emission signal through a controller; respectively performing first delay processing for each PRF in the radar emission signal through a first storing device, and generating and outputting an emission delay signal; respectively performing second delay processing for each modulation information data in modulation signal through a second storing device, and generating and outputting a modulation delay signal; enabling the pulse drop edge of each modulation information data in the modulation delay signal to be in front of the pulse raise edge of the PRF corresponding to each modulation information data, so as to ensure matching and aligning; performing convolution operation for the emission delay signal and the modulation delay information through the controller, and generating and outputting a radar echo simulating signal; delaying and modulating the radar emission signal. With the adoption of the method, the problem of simulating echo distortion can be avoided.
Owner:BEIJING RUNKE GENERAL TECH
Intelligent business hall face recognition method based on lightweight deep learning
InactiveCN110781829ASolution management modeImprove experienceCharacter and pattern recognitionData setEngineering
The invention discloses a intelligent business hall face recognition method based on lightweight deep learning, which comprises the following steps of: data preprocessing: detecting a face region in an acquired image, and then inputting the region into a face recognition network; design of a face recognition model; model training: learning and distinguishing features of a human face, gradually adjusting weight parameters of a network through multiple iterations based on a human face training data set subjected to data preprocessing, and finally obtaining a human face recognition model with good performance; model testing. According to the invention, a traditional business hall business handling mode is solved; through a face recognition mode based on deep learning, potential business recommendation can be actively provided for a user by analyzing user consumption information, precise marketing of customers is realized, business handling guidance is intelligently provided for the customers, and the user experience and the working efficiency of business handling personnel are greatly improved; under the condition of ensuring the model recognition precision, the model scale is greatlyreduced, and the face recognition of the mobile terminal is realized.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Low power-consumption time-delay controllable POR (power on reset) method and circuit
InactiveCN102055449AImplementation delayReduce instantaneous power consumptionElectronic switchingTime delaysInput control
The invention relates to a low power-consumption time-delay controllable POR (power on reset) method and circuit. Impulse waveform signals are generated through changing the input control end Vc of a programmable oscillator, wherein the period of the impulse waveform signals is T1; a counter counts the impulse waveform signals, and when the count value of the counter reaches a set value m, the output of the counter is changed from a logic low level into a logic high level; and an output buffer circuit outputs the logic high level as a POR signal, namely the time delay (Tdelay) required for realizing POR is m*T1, and the programmable oscillator and the counter are shut by utilizing the logic high level output by the buffer circuit. By utilizing the low power-consumption time-delay controllable POR method and circuit, the technical problems that the existing POR circuit is difficult to reach the delay of millisecond magnitude and can not change the time delay interval under the condition of not adopting off-chip capacitance are solved; and the time delay value can be programmed and changed, the delay of millisecond magnitude can be realized, and the circuit only has tiny instant power consumption.
Owner:XI AN UNIIC SEMICON CO LTD
Over excitation protection circuit of solid state power amplifier and implementation method thereof
ActiveCN105227144AImprove linearityReduce output powerAmplifier modifications to reduce temperature/voltage variationAmplifier protection circuit arrangementsAudio power amplifierTime delays
The invention relates to the technical field of solid state power amplifiers, and discloses an over excitation protection circuit of a solid state power amplifier. The over excitation protection circuit specifically comprises an automatic level control loop and a switch control loop. A threshold of the automatic level control loop is set to stabilize over excitation input power at a certain rated power level; and a time delay or a threshold of the switch control loop is set to turn on a radio frequency switch after the automatic level control loop starts to control, so as to prevent an over excitation signal prior to control from entering a radio frequency amplification link. By means of the cooperative use of the two circuits, when an over excitation signal is input, subsequent equipment is protected, and meanwhile, the amplitude of the input over excitation signal is controlled instead of simply preventing over excitation by the on-off of a time delay switch used in the prior art. A universal over excitation protection device limiter is not used in the over excitation protection circuit disclosed by the invention, thereby avoiding the deterioration of such indexes as transmission system harmonics, third-order cross modulation, noise coefficient and the like. The invention further discloses an implementation method of over excitation protection circuit of the solid state power amplifier.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Real-time distributed identity perception pedestrian attribute identification method in mobile edge cloud
ActiveCN111553213AImplementation delayEnable real-time analysisResource allocationCharacter and pattern recognitionVisual technologyLocal algorithm
The invention belongs to the technical field of computer vision, and provides a real-time distributed identity perception pedestrian attribute identification method in mobile edge cloud. According tothe invention, a system for analyzing pedestrian attributes bound with identities across cameras is provided for the first time, and a complete algorithm implementation and deployment scheme is provided. In addition, some local algorithms have improvements on the prior art. Firstly, an improved pedestrian attribute recognition and pedestrian re-recognition combined training method improves the recognition precision while reducing the redundant information of the neural network; and 2, a distributed pedestrian image library, wherein the process of feature distance calculation in pedestrian re-identification is accelerated by adopting parallel calculation. In addition, the module allocation algorithm based on the context multi-arm tiger machine has universality and can be used for deployingother models in a mobile edge network.
Owner:DALIAN UNIV OF TECH
Fully-automatic bagging and sealing machine
The invention provides a fully-automatic bagging and sealing machine and belongs to the technical field of packaging machinery. Technical problems, such as environment pollution, labor waste, low efficiency and high cost, in the prior art are solved. The fully-automatic bagging and sealing machine comprises a bag conveying mechanism, a bag opening supporting mechanism, an object conveying mechanism and a bag sealing mechanism. Packaging bags are sucked and conveyed to a bag opening supporting structure part by the bag conveying mechanism for opening supporting treatment. Then, objects are bagged by an object conveying structure, and a sealing structure immediately carries out bag sealing treatment. Then, the objects packaged are automatically conveyed into a storing zone by being pushed by a cylinder, and streamline operation is finished. The fully-automatic bagging and sealing machine realizes object collecting, bagging and packaging series process, is efficient, saves labor and energy and protects environment.
Owner:CHANGCHUN UNIV OF SCI & TECH
Communications Method and Equipment
InactiveUS20140112135A1Improve throughputImplementation delayError preventionTransmission systemsNetworked Transport of RTCM via Internet ProtocolComputer science
The present invention discloses a communications method and equipment and relates to the field of wireless communications, which are used to solve a problem that data offloading communications cannot be initiated because data offloading information of a network transmission peer end in a process of data offloading cannot be acquired in the prior art. A first network element queries data offloading capability information of a second network element from a server, where the first network element has a capability of data offloading. The first network element receives a message that carries the data offloading capability information of the second network element and is sent by the server. The first network element offloadingly transmit data which is to be sent when the message indicates that the second network element has a capability of data offloading.
Owner:HUAWEI TECH CO LTD
Solar energy and sewage source heat pump combined heating system
ActiveCN102997319ARealize heatingIncrease temperatureCentral heating with accumulated heatLighting and heating apparatusHeating systemThermal energy
The invention relates to a solar energy and sewage source heat pump combined heating system. A solar water heating system and a sewage source are connected in series with the heated part of a heat pump unit through a low-temperature water tank; the heat pump unit is started at valley electrovalence at night, an evaporating end is heated from the low-temperature water tank, and heat is completely stored by the solar water heating system when working at daytime; when the sewage source heat pump unit works at the valley electrovalence, the sewage source heat pump unit obtains low-grade heat energy from the low-temperature water tank and then releases high-grade heat energy through the heating cycle of the unit; part of the high-grade heat energy is stored in a high-temperature water tank, and the other part of the high-grade heat energy is directly supplied to end equipment for heating. According to the solar energy and sewage source heat pump combined heating system, phase-change materials are added to the high-temperature water tank to enhance the heat storage capacity and heat lag capability of the high-temperature water tank; the end equipment is lower in air supply temperature by adopting a fan coil to enhance the heat supply EER (Energy Efficiency Ratio) of the heat pump unit, so that the initial investment and operating cost of the heat pump unit are reduced; and the heat of the fan coil working at daytime is from the phase-change materials inside the high-temperature water tank and the heat storage amount of water at night.
Owner:SHENYANG JIANZHU UNIVERSITY
Broadband high isolation double circularly polarized antenna based on single layer artificial surface plasmon
ActiveCN110311214ASimple structureImprove Caliber EfficiencyRadiating elements structural formsAntennas earthing switches associationFull waveCoaxial line
The invention belongs to the technical field of a microwave antenna and discloses a broadband high isolation double circularly polarized antenna based on a single layer artificial surface Plasmon. Theantenna includes a radiator, two vertically placed differential feed baluns and a metal reflector, wherein the radiator is located above the floor, upper ends of the two baluns are connected with theradiator, lower ends of the baluns penetrate through the metal floor and are connected with a feeding coaxial line, the radiator consists of four dipoles, two pairs of feeders and four parasitic metal rings, and the two pairs of feeders include a pair of coplanar strip lines and a pair of odd-mode artificial surface plasmon transmission lines. Full-wave electromagnetic simulation and processing tests are performed for the designed antenna, and that the antenna is capable of achieving broadband high isolation double circularly polarized radiation in the designed frequency band is verified. Theantenna is advantaged in that properties of high isolation, wide axial ratio bandwidth, high aperture efficiency and easy processing are achieved, and the application prospect is wide.
Owner:XIDIAN UNIV
Playing control method and device, and terminal
ActiveCN106452644AReduce congestionImplementation delayTime-division multiplexSubstation equipmentComputer terminalEmbedded system
The embodiment of the invention provides a playing control method and device, and a terminal. The method comprises the steps of obtaining a plurality of pieces of network delay of a plurality of playing devices; selecting transition devices and slave devices from the plurality of playing devices according to the plurality of pieces of network delays; and sending control commands to the transition devices, thereby enabling the transition devices to control the slave devices to carry out synchronous playing. According to the scheme, the playing devices are divided into the transition devices and the slave devices according to the network delay between the playing control device and the playing devices, so the leveled control over a playing system can be realized, and the network delay between the playing control device and the playing devices can be reduced. Compared with the prior art, the method, the device and the terminal have the advantage that the audio data playing synchronism among the plurality of playing devices can be improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Transmission method and thin terminals for media data streams
ActiveCN103684970AImplementation delayIncrease speedData switching networksComputer hardwareData stream
The invention discloses a transmission method and thin terminals for media data streams. The transmission method comprises the following steps: a media channel is built through a first thin terminal and a second thin terminal, wherein a first media module is preset in the first thin terminal, and a second media module is preset in the second thin terminal; the media data streams are transmitted through the media channel by the first media module preset in the first thin terminal and the second media module preset in the second thin terminal. The transmission method provided by the invention solves the technical problems of network delay and data distortion caused by the reason that in prior art, data interaction between the two thin terminals only can be realized by transmitting media data between a thin client and a virtual desktop through an RDP (Remote Desktop Protocol) and the like; therefore, the technical effects of improving data transmission velocity and data accuracy are realized.
Owner:ZTE CORP
Time clock generating circuit and design method
InactiveCN101488738AImprove performanceImplementation delaySingle output arrangementsManipulation where pulse delivered at different timesComputer scienceDesign methods
The invention discloses a clock generating circuit and a design method thereof which comprises the following steps that an input module comprising a dispersion gate and an inverter is built, and a clock signal, which is received by the input module is transmitted into a buffer module and an output module according to an input signal; the buffer module comprising a plurality of inverters is built, and a buffer signal which is received by the buffer module, is generated according to the clock signal; the output module comprising a plurality of inverters is built, and clock signals, which are not mutually overlapped and are received by the output module, are buffered and output according to the clock signal and the buffer signal; a delay module comprising a transfer gate and a PMOS transistor is built, and a delay signal is generated by delaying the clock signal by the delay module, wherein, the output module, the buffer module and the delay module are connected in sequence, and the delay signal generated from the delay module is fed back to the input module as an input signal. Through adopting the clock generating circuit and the design method thereof, the performance of the clock generating circuit is improved and the chip space and the production cost of the chip are reduced.
Owner:修思(北京)电影科技有限公司
Power-on time-delay power-down quick turn-off control device based on capacitance characteristics
PendingCN112039328AImplementation delayFast shutdownPower conversion systemsCapacitanceDriver circuit
The invention discloses a power-on time-delay power-down rapid turn-off control device based on capacitance characteristics. The device comprises a main power supply, an over-current protection circuit, a switching circuit, a main capacitor, a charging and discharging circuit used for charging or discharging the main capacitor, a switch driving circuit used for controlling the switching circuit tobe in one of a conduction state and a cut-off state according to a voltage signal of the main capacitor, and an output circuit used for outputting pure voltage. The output end of the main power supply is connected with the input end of the over-current protection circuit, the switching circuit, the charging and discharging circuit, the switch driving circuit and the output circuit are all connected with the output end of the over-current protection circuit, and the switch driving circuit is connected with the charging and discharging circuit through the main capacitor. According to the invention, a controlled delay time is obtained by controlling the charging and discharging time of the charging and discharging circuit to the main capacitor to turn on the control switch of the main circuit, so that delay of the output power supply of the main circuit is realized; and during power failure, the main capacitor is quickly short-circuited and discharged to control the quick turn-off of theoutput power supply of the main circuit.
Owner:GUANGZHOU BAOLUN ELECTRONICS CO LTD
Method and system for realizing remote diagnosis and controlling vehicle
InactiveCN112269327ALow latencyImprove communication stabilityVehicle testingParticular environment based servicesIn vehicleEmbedded system
The invention discloses a method and system for realizing remote diagnosis and controlling a vehicle. The method comprises the steps that S1, a vehicle-mounted terminal obtains real-time data on the vehicle through a vehicle body CAN bus; S2, the vehicle-mounted terminal sends the data to roadside communication equipment in a wireless transmission mode; S3, the roadside communication equipment uploads the data to a server; S4, the server performs operation on the data and judges whether the data is abnormal or not, if yes, the step S5 is executed, and if not, the step S6 is executed; S5, the server issues a command to the roadside communication equipment, the roadside communication equipment sends the received command to the vehicle-mounted terminal, and the vehicle-mounted terminal sendsa control command through the vehicle body CAN bus; and S6, the server feeds back abnormal-free data to the roadside communication equipment and then turns to the vehicle-mounted terminal. According to the invention, data interaction between the roadside communication equipment and the vehicle-mounted terminal is carried out by using wireless transmission modes such as LTE-V2X and the like, diagnosis and real-time control of a remote vehicle are realized, and the communication stability is improved.
Owner:GUANGZHOU TONGDA AUTO ELECTRIC +2
Method and system for eliminating direct current offset between electrodes based on chopping technology
ActiveCN114533087AEliminate DC OffsetDC Offset AccurateDiagnostic recording/measuringSensorsCapacitanceLow-pass filter
The invention discloses a method and a system for eliminating direct current offset between electrodes based on a chopping technology. The method comprises the following steps: step S1, outputting an electroencephalogram signal after chopping modulation and a direct current offset signal between the electrodes; s2, outputting direct current offset current between the electrodes; s3, extracting an integral direct current offset signal; s5, the electroencephalogram signals enter a chip amplification module to be amplified and demodulated, the electroencephalogram signals are returned to an original electroencephalogram signal frequency band, and original electroencephalogram signals are obtained; s6, filtering the original electroencephalogram signals through a low-pass filter to obtain noise-filtered electroencephalogram signals; and S7, transmitting the noise-filtered electroencephalogram signal into a digital-to-analog converter, and converting the noise-filtered electroencephalogram signal into a digital signal. The direct-current servo circuit effectively suppresses direct-current offset between the electrodes, compared with a traditional direct-current servo circuit, the process delay is reduced, meanwhile, the capacitance value of the input capacitor in the circuit is the same as that of the feed-forward capacitor, an ABBA type layout arrangement mode can be adopted, and process errors in the chip manufacturing process are effectively avoided.
Owner:ZHEJIANG LAB
Solar energy and sewage source heat pump composite energy utilization system
ActiveCN102997319BRealize heatingIncrease temperatureCentral heating with accumulated heatLighting and heating apparatusThermal energyWater source
Owner:大连建大建筑节能科技发展有限责任公司
Photocarrier delay line
InactiveCN101526646ASmall sizeLight in massCoupling light guidesSemiconductor materialsCharge carrier
The invention discloses a photocarrier delay line. The photocarrier delay line comprises an excitation laser 1, a first lens 2, semi-conductor material 3, a detection laser 4, a second lens 5 and a photoelectric detector 6, wherein a radio frequency electric signal S (t) modulates the excitation laser 1; modulated exciting light is irradiated on the semi-conductor material 3 after the exciting light is focused through the first lens 2; a non-equilibrium carrier the concentration of which changes along with the modulated exciting light is generated in the semi-conductor material 3 and radiates in all directions, and changes of concentration of the carrier can cause changes of the refractive index of the material; after detecting light emitted by the detection laser 4 is focused through the second lens 5, the detecting light is irradiated at a certain position in a reflection range of the carrier in the semiconductor material 3 at an incidence angle beta, and emergent light of the detecting light through the semi-conductor material 3 carries delayed information of an exciting light signal; and the emergent light is converted into a radio frequency electric signal V(t) through the photoelectric detector 6, and the signal V(t) is the delayed radio frequency electric signal S(t).
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Video face kernel method, client, server and computer readable storage medium
InactiveCN109756701AImplementation delayAchieve jitterFinanceClosed circuit television systemsKernel methodNetwork connection
The invention provides a video face check method, which comprises the following steps that: when receiving a video face check request, a client sends a video face check instruction to a server, so that the server distributes a check end; When the agent token returned by the server is received, establishing a network connection with a corresponding audit end, and obtaining network state informationbetween the agent token and the audit end; obtaining original video data, and preprocessing the original video data based on the network state information to obtain client video data; and sending theclient video data to the auditing terminal, and displaying a corresponding auditing image when receiving the auditing terminal video data. The invention also provides a client, a server and a computer readable storage medium. According to the method, when the video face check is carried out, image jamming caused by a network problem in the video face check process can be reduced, the fluency andthe stability of the real-time video in the video face check process are improved, and the video face check process is guaranteed to be carried out smoothly.
Owner:ONE CONNECT SMART TECH CO LTD SHENZHEN
Delayed uncovering structure of stirrer
The invention discloses a delayed uncovering structure of a stirrer. The delayed uncovering structure comprises a stirring cup and a cup lid covering the stirring cup, a handle is arranged on the stirring cup, the cup lid is provided with a covering portion corresponding to the handle, the covering portion is positioned above the handle after the cup lid is mounted, a delayed button is arranged atthe upper end of the handle and provided with a pin, the covering portion is provided with a positioning groove matched with the pin, the delayed button is connected with an elastic part to keep thepin clamped into the positioning groove and limit rotation of the cup lid, and the delayed button can be pressed down, so that the pin is separated from the positioning groove. In downtime, as the pinis clamped into the positioning groove to limit rotation of the cup lid, the cup lid needs to firstly rotate by a moving angle, the delayed button is pressed down, the pin is separated from the positioning groove, and then the cup lid rotates and is opened. Two-step operation is needed to open the cup lid, delay is realized, time is reserved for step-by-step stop of a high-speed rotating motor and a stirring knife, and safety is improved.
Owner:JIANGMEN HOUSOEN ELECTRIC MFG
Multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device and method.
ActiveCN110324063AImplementation delayRealized gainBaseband system detailsSelf interferenceFrequency coverage
The invention discloses a multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device and method. The multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device comprises a multi-interference-source interference reference signal down-conversion module, a multi-interference-source radio frequency domain interference reconstruction module, an interference reconstruction signal up-conversion module, a synthetic interference cancellation module, a power division module and an interference control module. According to the invention, down-conversion is carried out on multiple paths of wide-frequency interference reference signals. Mutiple paths of interference reference signals of fixed intermediate frequency are acquired. Each path of interference reference signal is reconstructed through a multi-interference-source radio frequency domain interference reconstruction module controlled by an interferencecontrol module. After the reconstruction signals are synthesized to obtain multi-interference-source interference reconstruction signals, the multi-interference-source interference reconstruction signals are subjected to up-conversion and radio frequency wide frequency returning, the multi-interference-source interference reconstruction signals are input into the interference synthesis cancellation module to be synthesized with the interfered radio frequency receiving signals to achieve interference cancellation, and complexity of interference reconstruction is reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Multi-mode POR circuit for FPGA
ActiveCN108347244AReduce dynamic power consumptionSimple designLogic circuits using elementary logic circuit componentsMillisecondElectricity
The present invention relates to a multi-mode POR circuit for an FPGA, comprising: a first delay module (101), a second delay module (102), a gating control module (103), and an output module (104), wherein a first output end of the first delay module (101) is electrically connected to the second delay module (102) and the gating control module (103) respectively, and a second output end of the first delay module (101) is electrically connected to the output module (104) is connected; the second delay module (102) is electrically connected to the gating control module (103); and the gating control module (103) is electrically connected to the output module (104). The multi-mode POR circuit provided by the invention can flexibly control the delay of a POR circuit from a subtle level to a few hundred milliseconds level; and meanwhile, the clock and reset of a D trigger are controlled by the output of a selector, the clk signal can be shielded according to needs in variosu modes, and theD trigger no longer acts, thereby reducing the dynamic power consumption of the circuit.
Owner:XIAN INTELLIGENCE SILICON TECH INC
Power-on and power-off remote control system and method for power supply
PendingCN110850762ASimple designLow costProgramme controlComputer controlCommunication interfaceRemote control
The invention provides a power-on and power-off remote control system and method for a power supply, and the system comprises a communication board card; the communication board card at least comprises a CPU module and a power supply module; the CPU module at least comprises a communication interface, and the communication interface realizes the communication with an external network; the power supply module comprises a primary power supply and an internal main power supply connected with the primary power supply, and the primary power supply is externally connected with an external power supply module; a control circuit is arranged between the primary power supply and the CPU module; the CPU module receives a power-off instruction through the communication interface, and achieves the switching control of the primary power supply through the control circuit. According to the invention, a complex chip does not need to be used as an independent module, a special power supply circuit is not needed, and only the control circuit with extremely low cost is needed, so the design is simplified, the cost is saved, and the tense PCB space is saved.
Owner:北京浩瀚深度信息技术股份有限公司
High-reliability power supply circuit suitable for embedded field
InactiveCN104485729AImprove reliabilityImplementation delayEmergency power supply arrangementsTransformerTime delays
The invention discloses a high-reliability power supply circuit suitable for the embedded field. The high-reliability power supply circuit applicable to the embedded field comprises a transformer T, a bridge rectifier diode D, a relay J, a diode D1 and a single-pole double-throw switch S, wherein one side of the transformer T is connected with an alternating-current power supply Ui, and the other side of the transformer T is connected between a port a1 and a port a3 of the bridge rectifier diode D; the port a1 of the bridge rectifier diode D is also connected with an anode of the diode D1, a cathode of the diode D1 is also connected with one end of the relay J, the other end of the relay J is grounded, a port a4 of the bridge rectifier diode D is grounded, and a plurality of diodes are sequentially and serially connected between a port a2 and a grounding end of the bridge rectifier diode D. Through the principle, power can be supplied to electric equipment through various methods, the situation of power outage is avoided, the time delay of a power supply is realized, the power supply circuit is very suitable for use in the embedded field and the power supply reliability is improved.
Owner:成都嵌智捷科技有限公司
Traffic forwarding method and device based on virtualization cloud platform, and storage medium
ActiveCN111555919AImplementation delayRealize forwardingData switching networksSoftware simulation/interpretation/emulationVirtualizationPacket loss
The invention provides a flow forwarding method and device based on a virtualization cloud platform, a storage medium and a processor. The method comprises the following steps: detecting whether a threat exists in virtual network traffic of a physical host; under the condition that threats exist in the virtual network flow, controlling the physical host to be switched from a flow mirror image modeto a flow serial mode; post threat mitigation, controlling the physical host to switch from a flow serial mode to a flow mirror image mode; according to the method, the switching of the method for forwarding the traffic in the virtualized cloud platform between the traffic mirroring mode and the traffic serial mode is realized; a threat can be detected based on the traffic mirroring mode, and packet loss and time delay of the traffic cannot be caused; based on the flow serial mode, flow forwarding and threat elimination can be realized, so that the method has dual advantages of a flow mirroring mode and a flow serial mode, and the flow forwarding effect based on the virtualization cloud platform is further improved.
Owner:HILLSTONE NETWORKS CORP
Design method of heterogeneous film structure delay line type surface acoustic wave device
ActiveCN111064444AThe steps of the design method are simpleSimple and fast operationImpedence networksBi layerThin membrane
The invention discloses a design method of a heterogeneous thin film structure delay line type surface acoustic wave device. The method comprises the following steps of 1, selecting a stacking mode ofa thin film material and a surface acoustic wave device model; 2, establishing surface acoustic wave device models with different thicknesses and acquiring dispersion characteristics of the surface acoustic wave device models; 3, according to the dispersion characteristic of the surface acoustic wave device model, selecting the film thickness which most meets the design requirement; 4, presettinga performance index of the surface acoustic wave device under the condition that the thickness of each film of the surface acoustic wave device model is determined; 5, designing a transducer structure according to the design indexes of the surface acoustic wave device, and calculating parameter values of the device; and 6, performing parameter judgment and feedback adjustment on the surface acoustic wave device. The method is simple in step, sapphire is selected as a substrate layer, an aluminum nitride and gallium nitride double-layer piezoelectric film is selected, and design of the delay line type surface acoustic wave device of the heterogeneous film structure is achieved.
Owner:XIAN UNIV OF SCI & TECH
Buffer type traction machine band-type braking device
PendingCN106979259AImprove comfortDoes not affect the braking effectDrum brakesBrake actuating mechanismsEngineeringMechanical engineering
The invention discloses a buffer type traction machine band-type braking device which comprises two band-type arms surrounding a traction machine spindle, and a brake connected with the both band-type arms. An electromagnetic ejecting rod, a brake spring set and a piston buffer are arranged at the end, connected with the brake, of each band-type arm. Each piston buffer comprises a piston rod sleeved with a piston cylinder and the piston cylinder. A plurality of through holes are formed in the side wall of each piston cylinder. The free end of each piston rod is connected with the corresponding band-type arm. The free end of each piston cylinder is connected with the brake through a ball. Since the first end of each band-type arm is provided with the piston buffer, the period from the time when the band-type arms start braking to the time when the braking force reaches a maximum value can be appropriately prolonged through the piston buffers, braking is effectively controlled while the braking effect is not affected, the comfort of a rider can be improved, and temporary impact of braking to equipment is reduced.
Owner:苏州蒙特纳利驱动设备有限公司
Broadband time-resolved fluorescence immunoassay device and method
ActiveCN113075175AThe testing process is simpleShorten test timeBiological testingFluorescence/phosphorescenceFluorescence immunoassayFluorescence
The invention discloses a broadband time-resolved fluorescence immunoassay device and a broadband time-resolved fluorescence immunoassay method. The device comprises a light source for emitting exciting light; the device further comprises a light path module, a sample loading module, a spectrum detector and a pulse generator, the light path module comprises a light filtering assembly which is used for transmitting exciting light emitted by the light source to a marker and transmitting a fluorescence signal emitted after the marker is excited to the spectrum detector; the sample loading module comprises a driving motor and a POCT detection card; the POCT detection card is used for bearing one or more samples to be detected; the driving motor is used for driving the POCT detection card to move, so that the samples to be detected are positioned on a light path of the exciting light; the spectrum detector is used for receiving fluorescence signals; the pulse generator is connected with the driving motor, the light source and the spectrum detector and used for controlling the working time sequence of the driving motor, the light source and the spectrum detector. According to the invention, broadband luminescence spectrum measurement can be carried out on various markers at the same time, the test process is simplified, and the test time is shortened.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Radio frequency signal delay system
The invention discloses a radio frequency signal delay system, which comprises an electro-optical conversion module used for modulating a radio frequency signal to be delayed onto an optical carrier to obtain an optical carrier signal; The optical delay module is used for enabling the optical carrier signal to obtain optical delay; And the electric delay module is used for demodulating the radio frequency signal from the optical carrier signal subjected to the optical delay, and enabling the demodulated radio frequency signal to obtain the electric delay. According to the invention, the optical delay and the electric delay are combined; fine time delay of different magnitudes is realized; meanwhile, a temperature measurement and control device is adopted to perform temperature monitoring and control on the adjustable optical fiber delay line and the delay line on the integrated chip, so that the phase fluctuation of signals is inhibited, and finally, the continuous large-range fine adjustable-phase stable photoelectric hybrid radio frequency delay system with the delay amount of s magnitude and the tuning precision of ns magnitude is realized.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI +1
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