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38results about How to "Reduce hardware configuration" patented technology

Image display apparatus

The present invention is to provide an image display apparatus capable of properly correcting or adjusting, with small-scale hardware, variations in drive conditions due to electric resistance of matrix wiring on a display panel. The image display apparatus includes an adjusted image data calculation unit 14 for calculating adjusted image data as image data that has been compensated for the influence of voltage drop caused by resistance of at least the row wiring and a scan unit. The image display apparatus also includes an amplitude adjustment unit having a function for adjusting the amplitude of adjusted image data Dout, and a modulator 8 the takes in the adjusted image data with the amplitude adjusted and outputs a modulation signal to the column wiring.
Owner:CANON KK

A document transmission remote control method intelligent mobile telephone

The invention discloses a method of a smartphone for remotely controlling document transmission. The smartphone is used for communicating with a remote computer through wireless network to acquire document catalogs and names required by users; and then communication information such as IP address is acquired by the connection with a near-end computer through short-distance wireless communication and is offered to the remote computer; finally, network connection is established between the near-end and the remote computers to complete the function of document transmission. The communication both between the smartphone and the remote computer and between the remote and the near-end computers goes through certain rights management to lead to safe document transmission. The invention reduces the problems of hardware configuration and network bandwidth required in the process of document transmission between the smartphone and the computers and solves the safety problem caused by using various document transmission methods among the computers at the same time. Furthermore, the invention has more simplicity and convenience and practicability and is easily realized and popularized.
Owner:SUN YAT SEN UNIV

Method for greatly improving performance of workflow engine

The invention relates to a method for greatly improving the performance of a workflow engine, which pertains to the filed of middleware technical framework, in particular to the field of the technical framework of the workflow engine. The method improves the performance of the workflow engine from the technical framework of the workflow engine and comprises the steps of server-side caching, client-side caching and the like; the method adopts aching technologies, object pool technologies and an asynchronous call way to reduce system expense, greatly improve the performance of the workflow engine, reduce the fund input of the whole business flow system, support the business flow system with the same data volume and highly concurrent access, achieve the same performance effect and reduce cluster nodes of certain number or lower the hardware configuration of cluster nodes when clustering is executed.
Owner:SHANDONG CVIC SOFTWARE ENG +1

Multi-array-element single-channel interference angle measurement device

The invention discloses a multi-array-element single-channel interference angle measurement device which comprises an antenna array. The antenna array comprises a plurality of receiving antennas, an angle measurement receiving channel and a processing unit, the receiving antennas form azimuth baselines and pitch baselines respectively, the angle measurement receiving channel converts radio-frequency signals output by the receiving antennas in the antenna array into intermediate frequency signals and outputs the intermediate frequency signals to the processing unit, and the processing unit determines phase differences among the receiving antennas at the same receiving time in the antenna array according to sampling signals of the intermediate frequency signals, obtains azimuth angles of the azimuth baselines and pitch angles of the pitch baselines respectively and outputs the azimuth angles and the pitch angles. According to the multi-array-element single channel interference angle measurement device, single-channel receiving and two-dimensional angle measurement of the antenna array are achieved.
Owner:XIAN INSTITUE OF SPACE RADIO TECH

Distributed image stitching method, distributed image stitching server and distributed image stitching terminal

The invention relates to the correlation technical field of image processing, in particular to a distributed image stitching method, a distributed image stitching server and a distributed image stitching terminal. The distributed image stitching method includes the following steps of receiving an image stitching request sent by the terminal, wherein the image stitching request comprises parameters of a plurality of images to be stitched and the terminal is used for displaying an image to be transmitted; obtaining the images to be stitched according to the parameters of the images to be stitched; obtaining the image to be transmitted after stitching the images to be stitched; and returning the image to be transmitted to the terminal. The terminal does not need to be in charge of stitching and manufacturing of the images and the stitching and the manufacturing of the images are finished through the server (a cloud). According to the distributed image stitching method, the distributed image stitching server and the distributed image stitching terminal, a task of the stitching and the manufacturing of the images is handed over the cloud server, a smart phone, a personal computer and a stitching wall only need to be in charge of functions of reading and playing, and therefore hardware configuration of the terminal is greatly reduced. An ordinary display terminal can enjoy image stitching service. In addition, the distributed image stitching method, the distributed image stitching server and the distributed image stitching terminal can take full advantages of technical-resource sharing of a cloud computing infrastructure.
Owner:GUANGDONG VTRON TECH CO LTD

On-line charging system, service implementing method and system

The invention discloses a service implementation method which includes that all the user data are stored in an online charging system; the online charging system acquires the second calling request from the service control point; the second calling request carries the calling number, the called number and the location information of the charged user; wherein, the service control point constructs and sends the second calling request after receiving the first calling request from the user; the online charging system determines the calling authorization, the calling type according to the calling number, the called number and the location information of the charged user, and processes charging according to the stored user data of the charged user. The invention also discloses an online charging system and a service implementation system. Based on the service implementation method, the online charging system and the service implementation system, all the user data are stored in the OCS; the hardware configuration of the SCP is reduced and the service logic is simplified; thereby, the hardware investment of the operator, the workload of the development and maintenance are reduced; the economic benefit of the operator is improved.
Owner:ZTE CORP

Image processing method, image processing device and display device

The invention discloses an image processing method, an image processing device and a display device, relates to the technical field of image processing, and aims to reduce the image distortion degreeon the premise of ensuring that a VR image is not lost. The image processing method comprises the following steps: partitioning an original gridding image, so that a plurality of obtained regional gridding images are distributed along a direction far away from the geometric center of the original gridding image; And adjusting grid vertexes of the plurality of regional grid images according to theanti-distortion parameters, wherein the grid density contained in the multiple area correction grid images is smaller than or equal to the grid density contained in the corresponding area grid images,and the grid density contained in the multiple area correction grid images is gradually increased in the direction away from the geometric center of the original grid image. The image processing device applies the image processing method. The image processing method, the image processing device and the display device provided by the invention are used for image anti-distortion.
Owner:BOE TECH GRP CO LTD +1

Video compression method and system

The invention provides a video compression method. The video compression method comprises the following steps of: acquiring background images from the shooting continuous pictures, and respectively converting the background images and the continuous pictures into grey-scale maps; enabling the background images of the converted grey-scale maps and the continuous pictures respectively to execute difference calculation so as to obtain difference images; respectively converting the difference images into binary images according to the setting gradation threshold value; respectively obtaining motion object regions of the continuous pictures according to the bianry images, and respectively calculating co-ordinate parameters of background images of the motion object regions; and compressing images of the background images and the motion object regions and the corresponding co-ordinate parameters into a video file. The invention also provides a video compression system, and the background images, the background images, the images of the variational motion regions and the co-ordinate parameters corresponding to the background images are compressed into a video file; and the video file greatly reduces the video data quantity, and a computer which has lower hardware configuration can smoothly play.
Owner:GUANGDONG VTRON TECH CO LTD

Method of converting phonetic file into text file

The process of converting phonetic file into text file includes the following steps: to obtain the phonetic file to the be converted and to play back in player the phonetic file including at least 50characters; the user to identify and input corresponding text to obtain phonetic file for training and corresponding text file; to re-estimate phonetic parameters by means of phonetic adapting technology with the obtained training file and basic phonetic identifier with phonetic identifying library; and to obtain phonetic identifier related to the recorder and convert the identified phonetic fileinto text file.
Owner:苏州孔雀电器集团有限责任公司

Optical fiber channel node card

The invention discloses an optical fiber channel node card and relates to the technical field of information transmission. The optical fiber channel node card comprises an FPGA used for finishing FC MAC and FC frame transceiving control, FC-AE-ASM protocol processing and host interface work, an FPGA CFG Flash used for storing a file of the FPGA, a communication configuration flash used for storing a communication configuration file, a JTAG interface positioned on the edge of a board and used for FPGA debugging and FPGA Image updating, a clock oscillator, a reset chip that monitors a system power-on state and provides a system reset signal, a CONN interface that provides all input and output signals, and a control module comprising an FC protocol processing part and a PCIe host interface, wherein the FPGA CFG Flash, the communication configuration flash, the JTAG interface, the clock oscillator and the CONN interface are all connected with the FPGA. The invention has the beneficial effects that the optical fiber channel node card has the characteristics of small volume and low power consumption, is low in hardware configuration amount, reduced in total power consumption, more stable in performance and relatively light in weight, and meets airborne requirements.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA

BGP (Border Gateway Protocol) gateway equipment and method for realizing gateway on-off function by utilizing equipment

InactiveCN101909021AAvoid Dedicated Gateway AppliancesEasy to handleNetwork connectionsTraffic volumeTraffic capacity
The invention discloses BGP (Border Gateway Protocol) gateway equipment and a method for realizing a gateway on-off function by utilizing the equipment. The BGP gateway equipment comprises a BGP controller, an authentication server and two border routers, wherein the authentication server establishes a message connection relationship with the BGP controller; the two border routers are mutually connected, one border router is used for accessing an Internet and establishing a BGP connection relationship with the BGP controller, and the other border router is used for gathering an Intranet flow. In the invention, the BGP connection relationship is established between the BGP controller and the border router, and a routing table state in the border router is indirectly controlled by increasing and deleting a routing table entry in the BGP controller, thereby achieving the purpose whether an Intranet is controlled to be in communication with the Internet or not, fulfilling the special gateway equipment on-off function, and avoiding the problem that a local area network can not visit the Internet caused by single point faults of arranging and upgrading expensive special gateway equipment and connecting in series gateway equipment with another gateway equipment. Bandwidth upgrading of an outbound can not influence the BGP controller, and the BGP controller can not be required to upgrade a corresponding physical link and the processing capability.
Owner:TSINGHUA UNIV

Business process distributing and processing system

The invention relates to a business process distributing and processing system comprising a main process server and at least one sub process server, wherein the main process server and the sub process server transmit data through a network or an external carrier, the main process server distributes the specific processing contents of at least one sub process or block in one main process to one specified sub process processing server for execution, the sub process processing server synchronously returns a processing result to the main process server after accomplishing the processing, and then the main process server continuously carries out subsequent processing. The invention realizes that the same business is operated in different distribution servers and processing servers distributed in different regions, thereby realizing distributed management and meeting the management requirement of modern enterprise headquarters and branches which are set in different regions. The invention reduces hardware configuration required for the processing servers and can operate business process tasks relevant to construction sites in an off-line state.
Owner:上海络杰软件有限公司

Shielding method-based detecting method of fault point of photovoltaic generation system

The invention discloses a shielding method-based detecting method of a fault point of a photovoltaic generation system and belongs to the field of detecting the fault of the solar photovoltaic generation system. Under the solar radiation condition, photovoltaic cell panels of a photovoltaic generation system set are externally shielded by a light shielding plate, and a measurement sequence of the total voltage of a series branch under the different shielding is obtained, the measurement sequence is subjected to bad value judgment, and the shielded photovoltaic cell panels, corresponding to the measurements judged as the bad values, are fault cell panels. The shielding method-based detecting method has the advantages that improvement to the conventional photovoltaic generation system is omitted, hardware configuration of the photovoltaic generation system is not required, the system circuit is not required to be disassembled during the detecting, and operation is simple and effective.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Robot with face recognition function and face recognition method

InactiveCN106997449APersonalizeHardware configuration and cost reductionCharacter and pattern recognitionRecognition algorithmPersonalization
The invention relates to a robot with a face recognition function and a face recognition method. The robot with a face recognition function is matched with an outer server and comprises an image acquisition unit, an image recognition unit, a communication unit, and a controller, wherein the image acquisition unit is used for capturing more than one outer scene image; the image recognition unit is used for acquiring a face image with recognition feature points from the more than one outer scene image; the communication unit communicates with the outer server; the controller is connected with the image acquisition unit and the communication unit for transmitting the face image with recognition feature points to the outer server through the communication unit for face recognition and receiving a face recognition result returned by the outer server, and a corresponding interaction mode is started according to the face recognition result. The face recognition result is acquired through a face recognition algorithm, different interaction modes can be made for different persons, and individualization of the interaction mode can be realized.
Owner:SHEN ZHEN KUANG CHI HEZHONG TECH LTD

Data transmission method, acquisition card and system based on USB3.0 wire rod

The invention discloses a data transmission method, acquisition card and data transmission system based on a USB3.0 wire, and the method comprises the steps: carrying out the communication with a hostthrough a PCIE bus, receiving an acquisition instruction, and transmitting the acquisition instruction to specified sensing equipment through a USB3.0 high-speed signal line pair; two groups of overspeed signal line pairs of the USB3.0 wire communicating with specified sensing equipment and receiving data acquired by the sensor; and converting and analyzing the received data and transmitting thedata to the host through the PCIE bus. The USB 3.0 wire rod is used for overcoming the defects that in the prior art, main equipment is high in cost and difficult to popularize, the data transmissionspeed between a host and sensing equipment is increased to 10 Gb / s on the basis of an existing USB 3.0 wire rod, the cost of transmission equipment is reduced, and the applicability of the USB 3.0 wire rod to common equipment is improved.
Owner:深圳市度申科技有限公司

Printer and operation control method thereof

The invention discloses a printer which comprises a shell body, a display screen, a central controller, a control signal input part, a data collecting part and a printing executing part. The display screen is arranged on the shell body. The central controller is used for receiving a control signal of the control signal input part. The data collecting part and the printing executing part are controlled through the central controller. The control signal input part is used for receiving the control signal of an operator and transmitting the control signal to the central controller. The data collecting part is used for collecting printing data under control of the central controller. The printing executing part is used for receiving printing orders of the central controller and the printing data and carrying out printing on the printing data. The printer is simple in configuration and convenient to use.
Owner:B&B EXPORTING

Clothes treating equipment capable of controlling machine door by knocking and control method thereof

The invention relates to the technical field of clothes treatment equipment. In order to solve the problem that a machine door of existing clothes processing equipment is inconvenient to open, the invention provides clothes processing equipment capable of controlling a machine door by knocking and a control method of the clothes processing equipment. The clothes processing equipment comprises a detection module, a control module and a switch module, wherein the detection module is used for detecting a knocking signal triggered by knocking the clothes processing equipment; the control module isused for controlling the action of the machine door according to the detection result; and the switch module is connected to the signal transmission path between the detection module and the controlmodule and is used for connecting or disconnecting the signal transmission path under the control of the control module. According to the clothes processing equipment and the control method thereof, provided by the invention, the frequent unlocking action of a door lock is avoided while the door opening mode of opening the machine door by knocking is realized, so that the process of opening the machine door by a user is more convenient, time-saving and labor-saving, and the user experience is improved.
Owner:QINGDAO HAIER WASHING MASCH CO LTD +1

Method and device for electric generator frequency measurement based on PLC high-speed input

The invention discloses a method for electric generator frequency measurement based on PLC high-speed input. The method comprises the following steps that input alternating current sine waves are shaped into square waves through a frequency shaping circuit, and after frequency division is conducted on the waves through a frequency dividing circuit, the waves correspond to high-frequency clock signals, so that a set of high-frequency pulse strings reflecting the frequency of an electric generator are obtained, the high-frequency pulse strings are input to the input end of a PLC, the high-frequency pulse strings are counted through the PLC, and when counted data are not changed, a counted value is in direct proportion to the frequency of the electric generator. A measurement device is simple in structure, when it is measured that only one input port of the PLC is occupied by the frequency of the electric generator, hardware configuration is reduced, cost is low, it is only required that a final counted value NT is measured, and the frequency of the electric generator is equal to the ratio between the high-frequency clock signal frequency and the final counted value NT.
Owner:HNAC TECH

System stabilizing device

A system stabilizing device disposed in a micro grid incorporates a self-supporting control unit (200). The self-supporting control unit (200) allows a dq transforming unit (201) to determine an effective system voltage Vsd and an ineffective system voltage Vsq from a system voltage Vs. A fluctuation detecting unit (202) has differential characteristics and first-order lag characteristics, and determines the fluctuation component of the effective system voltage Vsd. This fluctuation component is multiplied by a gain in a proportional computing unit (203) to determine an ineffective current command Irefq. A fluctuation detecting unit (204) does not have differential characteristics, but has first-order lag characteristics, and determines the fluctuation component of the ineffective system voltage Vsq. This fluctuation component is multiplied by a gain in a proportional computing unit (205) to determine an effective current command Irefd. By so doing, hardware and computation load necessary for system stabilizing control during a self-supporting run can be reduced in the system stabilizing device.
Owner:MEIDENSHA ELECTRIC MFG CO LTD

Method for playing digital television set-top box audios by cellphone

The invention discloses a method for playing digital television set-top box audios by a cellphone, belongs to the technical field of audio broadcast, and aims to achieve the objective of watching high-definition videos on a television without noise disturbance to other residents. The method includes that a set-top-box comprises a wireless module and can access to a wireless network; the smart cellphone also comprises a wireless module and can access to the wireless network; the set-top-box and the smart cellphone can be communicated through the wireless network; an audio decoder of the set-top-box acquires television program audio data and sends the audio data to a data sending module of the set-top-box; the data sending module of the set-top-box is connected with an application of the smart cellphone through the wireless network and sends the acquired television program audio data to the application of the smart cellphone; the application is connected with the set-top-box through the wireless network, receives the audio data sent by the set-top-box through the network and plays the audio data, and a user listens to the audio data through earphones of the smart cellphone.
Owner:INSPUR QILU SOFTWARE IND

Multi-user cooperative space modulation method

The invention discloses a multi-user cooperative space modulation method. The multi-user cooperative space modulation method comprises the following steps: constructing a large scale cooperative multi-node communication model; activating antennas to send data by a source node through space modulation; appointing a relay node to receive signals, forwarding the received signals; receiving the signals by a target node, wherein the signals are sent directly by the source node and are forwarded by the relay node; reconstructing to obtain the original signals according to a detection algorithm by the target node. According to the method provided in the invention, the interference among the signals sent by multiple antennas is reduced through combining a general space modulation technique and a cooperative technique; the hardware configuration of the sending end is reduced; the cooperative grain is increased at the same time; and the performance of the cooperative communication system is improved.
Owner:TIANJIN UNIV

Workshop programming system

The invention discloses a workshop programming method. The workshop programming method comprises extracting geometrical information of a part and displaying the three-dimensional model of the part; identifying manufacturing features of the part in dependence on the three-dimensional model of the part, and generating a manufacturing feature list; planning and setting a processing technology in dependence on the manufacturing feature list of the part; and generating a numerical control program in dependence on the manufacturing features and the processing technology of the part. The invention also discloses a corresponding workshop programming module. The workshop programming method can include all information of the part from the blank to the product, and therefore the numerical control system can obtain complete product information, and intellectualization is truly achieved; automatic programming can be achieved quickly and efficiently, and the working efficiency is greatly improved.
Owner:HUAZHONG UNIV OF SCI & TECH +1

System stabilizing device

A system stabilizing device disposed in a micro grid incorporates a self-supporting control unit (200). The self-supporting control unit (200) allows a dq transforming unit (201) to determine an effective system voltage Vsd and an ineffective system voltage Vsq from a system voltage Vs. A fluctuation detecting unit (202) has differential characteristics and first-order lag characteristics, and determines the fluctuation component of the effective system voltage Vsd. This fluctuation component is multiplied by a gain in a proportional computing unit (203) to determine an ineffective current command Irefq. A fluctuation detecting unit (204) does not have differential characteristics, but has first-order lag characteristics, and determines the fluctuation component of the ineffective system voltage Vsq. This fluctuation component is multiplied by a gain in a proportional computing unit (205) to determine an effective current command Irefd. By so doing, hardware and computation load necessary for system stabilizing control during a self-supporting run can be reduced in the system stabilizing device.
Owner:MEIDENSHA ELECTRIC MFG CO LTD

Firework display system and firing time zero-lag control method thereof

The invention discloses a firework display system and a firing time zero-lag control method thereof. The construction of the firework display system and the setting of zero-lag firing time are included. The firework display system comprises a display control device, automatic firing devices and fireworks, wherein the display control device is used for controlling the automatic firing devices to operate in a wired or wireless communication mode, and the automatic firing devices are connected with the fireworks. The setting of the zero-lag firing time of the firework display system comprises thesteps of obtaining the time delay of communication between the display control device and of the multiple automatic firing devices, and calculating and setting the zero-lag firing time of each automatic firing device according to the time delay of communication and a display policy, specifically, the time delay of communication is obtained by adopting a communication determination method, so thathardware configuration of the automatic firing devices is reduced. According to the firework display system and the firing time zero-lag control method thereof, the influence of the time delay of communication in the firework display system is eliminated, and the effects of accurate firing and detonation are achieved.
Owner:RONGGUI SICHUANG BEIJING TECH

Automobile tyre valve

The invention discloses an automobile tyre valve and relates to a valve for inflating and deflating the vehicle, in particular to an automobile tyre valve of central inflation / deflation system of off-road vehicle tyre. The invention comprises an I-shaped obturating ring (1), a valve body (2), an O-shaped obturating ring (3), an elastic inner clip (4), a spring (5), a valve cover (6), a dust cap (7), a nut (8), a valve core (9), a membrane disk (10) and a membrane (11). The invention has a simple structure, low manufacturing cost and good pressure-keeping effect to the air pressure of the tyre, can ensure the rotary sealing air chamber has no air pressure when the vehicle drives to decrease the abrasion of the obturating ring, simplifies the structure of the central inflation / deflation system and decreases the hardware configuration of the vehicle.
Owner:湖北军缔焊隆科技发展有限公司

Power control method for fuel gas heating water heater

The invention discloses a power control method of a gas-fired heating water heater, which includes setting the maximum power of hot water and the maximum power of heating; The heating water heater is controlled. On the basis of not changing the hardware equipment of the existing gas-fired heating water heater, the present invention separately sets the maximum power of hot water and the maximum power of heating and independently controls the supply of hot water and heating, and combines the segmental combustion technology to achieve heating When working, the control power is low, ensuring the working performance of the gas heating water heater; when supplying hot water, the control power is high, and the working curve is expanded, so that the gas heating water heater can provide greater water flow and higher water temperature; the present invention It can make full use of the equipment performance of the gas heating water heater, reduce the hardware configuration and energy consumption of the gas heating water heater on the basis of meeting the user's heating and hot water supply, and save energy and reduce emissions.
Owner:MACRO THERMAL ENERGY TECH

Video compression method and system

The invention provides a video compression method. The video compression method comprises the following steps of: acquiring background images from the shooting continuous pictures, and respectively converting the background images and the continuous pictures into grey-scale maps; enabling the background images of the converted grey-scale maps and the continuous pictures respectively to execute difference calculation so as to obtain difference images; respectively converting the difference images into binary images according to the setting gradation threshold value; respectively obtaining motion object regions of the continuous pictures according to the bianry images, and respectively calculating co-ordinate parameters of background images of the motion object regions; and compressing images of the background images and the motion object regions and the corresponding co-ordinate parameters into a video file. The invention also provides a video compression system, and the background images, the background images, the images of the variational motion regions and the co-ordinate parameters corresponding to the background images are compressed into a video file; and the video file greatly reduces the video data quantity, and a computer which has lower hardware configuration can smoothly play.
Owner:GUANGDONG VTRON TECH CO LTD

A fiber channel node card

The invention discloses an optical fiber channel node card and relates to the technical field of information transmission. The optical fiber channel node card comprises an FPGA used for finishing FC MAC and FC frame transceiving control, FC-AE-ASM protocol processing and host interface work, an FPGA CFG Flash used for storing a file of the FPGA, a communication configuration flash used for storing a communication configuration file, a JTAG interface positioned on the edge of a board and used for FPGA debugging and FPGA Image updating, a clock oscillator, a reset chip that monitors a system power-on state and provides a system reset signal, a CONN interface that provides all input and output signals, and a control module comprising an FC protocol processing part and a PCIe host interface, wherein the FPGA CFG Flash, the communication configuration flash, the JTAG interface, the clock oscillator and the CONN interface are all connected with the FPGA. The invention has the beneficial effects that the optical fiber channel node card has the characteristics of small volume and low power consumption, is low in hardware configuration amount, reduced in total power consumption, more stable in performance and relatively light in weight, and meets airborne requirements.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA

A transmission system control redundancy and fault tolerance method

Transmission system control redundancy and fault tolerance method, perform the following operations: cascaded high-voltage inverters are equivalent to multiple cascaded units, each cascaded unit includes its own transformer secondary winding, power module and control interface; The parameters of each cascaded unit, the parameters of each cascaded unit include the current of each phase, and, or the phase of each phase of each cascaded unit, and, or the voltage between every two phases, and, or each phase The intermediate DC voltage, and, or the real-time temperature of each cascaded unit; and, or the intermediate support capacitor ripple current of each cascaded unit, and, or the output voltage and current waveform of each cascaded unit; the parameters of the cascaded unit Compare and judge whether the parameters meet the normal operation requirements of the high-voltage inverter. If they meet, the high-voltage inverter is considered to be in normal working condition. If not, it is considered that there may be abnormal operation. The invention has the advantages of being able to monitor the operating reliability of the frequency converter in real time and identify the risk of failure of each cascaded unit during the operation of the frequency converter.
Owner:ZHEJIANG UNIV

Multi-array-element single-channel interference angle measurement device

The invention discloses a multi-array-element single-channel interference angle measurement device which comprises an antenna array. The antenna array comprises a plurality of receiving antennas, an angle measurement receiving channel and a processing unit, the receiving antennas form azimuth baselines and pitch baselines respectively, the angle measurement receiving channel converts radio-frequency signals output by the receiving antennas in the antenna array into intermediate frequency signals and outputs the intermediate frequency signals to the processing unit, and the processing unit determines phase differences among the receiving antennas at the same receiving time in the antenna array according to sampling signals of the intermediate frequency signals, obtains azimuth angles of the azimuth baselines and pitch angles of the pitch baselines respectively and outputs the azimuth angles and the pitch angles. According to the multi-array-element single channel interference angle measurement device, single-channel receiving and two-dimensional angle measurement of the antenna array are achieved.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
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