36results about How to "Lower implementation costs" patented technology

The invention relates to a control circuit and a control method of a flyback convertor and an alternating current-direct current power converting circuit applying the control circuit of the flyback convertor. Within each switch period, an opening signal generating circuit is used for receiving drain-source voltage of a power switch in the flyback converter; when the drain-source voltage reaches valley value, opening signal is generated to control the turn-on of the power switch; a turn-off signal generating circuit is used for generating a turn-off signal after the power switch turns on and a turn-on time interval is completed according to a feedback error signal of a received output electric signal for representing the flyback converter; and the turn-off signal controls the power switch to turn off, so as to lead input current and input voltage of the flyback converter in a same phase and keep the output electric signal of the flyback converter constant.

The invention discloses a power factor correction control circuit for reducing EMI (electro magnetic interference), which comprises an inductive current threshold value, wherein when an inductive current is less than the inductive current threshold value, a peak value of the inductive current is controlled to be changed along with an input voltage; and when the inductive current reaches the inductive current threshold value, the inductive current is limited to be the inductive current threshold value. In such a way, the maximum peak of the inductive current is reduced, so that an inductive ripple current is reduced; the power factor is ensured, and the EMI of the circuit is reduced simultaneously, so that circuit filtering can be carried out simply and easily; and the power factor correction control circuit is extremely suitable for occasions with middle or low power. In addition, the peak current stress of the circuit is low, so that a switch tube and other components have small loss, and the utilization ratio of a power supply is further improved. The power factor correction control circuit for reducing the EMI disclosed by the invention meets the requirements of high-power factor and IEC61000-3-2 on the harmonic of the power supply, and has low cost and a small size.

A method in a wireless device for performing random access to a network node. The method comprises receiving a set of downlink beam-specific reference signals, BRS, from the network node, and determining a preferred BRS based on the received signal power for each BRS. The method also comprises selecting, based on the preferred BRS, a random-access resource to be used for transmitting a random-access attempt to the network node, as well as using the selected random-access resource when transmitting a random-access attempt to the network node, whereby the selection of random-access resource indicates to the network node which downlink beam is preferred by the wireless device to be used for downlink transmissions.

The invention discloses a multi-spectral imaging system and a multi-spectral imaging method based on double cameras. The system comprises a system supporting module, a light source module, an optical signal acquiring module and a computer module, wherein the system supporting module is used for supporting and connecting various components; the light source module is used for providing infrared light and visible light; the optical signal acquiring module is used for acquiring fluorescent light and visible light images; and the computer module is used for controlling the optical signal acquiring module to acquire images, processing the acquired images and displaying the processed images. Light which passes through a lens is divided into two parts by an optical beam splitter prism, the two parts of light are simultaneously acquired by the two charged coupled device (CCD) cameras in real time, problems in the prior art are solved effectively, the technological monopoly of foreign companies in China is broken, the barrier of multi-spectral video imaging research is lowered, the selectable space for optical molecular image probes is expanded, and the optical molecular image research and application range is also expanded.

An embodiment of the invention discloses a voice detection analysis method, a device thereof, computer equipment and a storage medium. The method comprises the steps of acquiring a to-be-analyzed voice; according to the type of the to-be-analyzed voice and detecting voice type information of a voice detecting model, determining at least one voice detecting model which matches the to-be-analyzed voice; for aiming at each voice detecting model which matches the to-be-analyzed voice, determining the operation result of each detecting rule according to the speaker kind, content information, the rule type of each detecting rule, the operator and the preset detecting content in the to-be-analyzed voice; determining the operation result of each voice detecting model according to the operation result of the detecting rule, and evaluating the to-be-analyzed voice according to the operation result of each voice detecting model. The voice detection analysis method, the device thereof, the computer equipment and the storage medium have advantages of optimizing an existing voice detecting analysis method, improving voice detecting analysis flexibility, reducing realizing cost and complexity invoice detection analysis, and improving user experience.

The invention discloses a method and a device for compounding imaging by supersonic frequency, wherein the method comprises the steps of emission, segistration, non-linear processing and accumulating. On the basis of multiple impulse transmission harmonic imaging, the method carries out non-linear processing on multi pulse echo, so the original fundamental frequency component is modulated within the frequency band of the harmonic frequency component and one-time detection for harmonic frequency component can achieve the frequency compounding imaging of fundamental wave and the harmonics. On the premise of basically not losing the image quality, the method reduces the realization complexity of a circuit and the cost.

The invention discloses a radio frequency channelization method based on optical comb double modulation sidebands and an implementation device. The method comprises the following steps: generating coherent signal light and local oscillation light; the signal optical comb generation module modulating an optical comb with a comb tooth interval of FSRsignal; wherein the local oscillation optical combgeneration module modulates an optical comb with a comb tooth interval of FSRlocal, the modulation module modulating an RF signal based on the signal optical comb, the RF signal being filtered by thefilter, and performing coherent receiving processing after channel division is performed based on an output signal of the filter and the local oscillation optical comb. The device comprises a coherent light generation module, a signal optical comb generation module, a local oscillator optical comb generation module, a modulation module, a periodic filter, a channel separation module and a coherent processing module. According to the method and the device, the comb tooth interval of the local oscillation optical comb can be reduced, the requirement on the number of comb teeth of the signal optical comb is reduced, the energy utilization rate is improved, and the channelization difficulty is reduced.

The invention discloses an information treatment device which is mainly used for the generation, demodulation and reception of optical mark information in an optical mark exchange system, wherein the information treatment device comprises a mark generator, a frequency sweeping local oscillation light source and a mark detection and reception part. The frequency sweeping local oscillation light source mainly realizes the coherent detection recognition of a spectrum amplitude code mark via a distributed feedback laser with frequency demodulated through a sawtooth wave function and receives the mark through a balanced detection method. The spectrum amplitude code mark is recognized through the method, thus a recognition unit structure of the traditional spectrum amplitude code mark can be greatly simplified and the receiving quality of marked signals is improved, and the spectral loss of the system can be reduced effectively and the actual operability of the system is improved.

The invention discloses address mapping method and device of FFT (Fast Fourier Transform) of a parallel branch butterfly unit. The method comprises the following steps of: determining a base number and a total stage number of FFT interstage transformation according to an FFT sampling point number; storing sampling points in a memory bank of a first memory bank group according to a sequence; executing the FFT interstage transformation, and parallelly writing data to be processed or intermediate data stored in the memory bank at a current stage, into a different logic block at a next stage according to a circulation displacement mode that a logic block moves by a bit in a line, and the memory bank moves by a bit in a row when a current stage number m is no less than 1 and smaller than M; and stopping the interstage transform until the current stage number m is equal to M. With the adoption of the method based on the FFT interstage transformation and circulation displacement according to the line and the row, the parallel branch butterfly unit FFT address mapping is realized, i.e. prallel read-write among multiple groups of data is realized through the mapping among addresses, and the multiple groups of data are not influenced with one another, thus ensuring the continuity and the effectiveness in the FFT operation process.

The invention discloses an electric spindle thermal error active control method based on an initial temperature maintaining strategy. The method includes the steps of firstly, establishing an electricspindle thermal error active control system; secondly, determining the number and location of temperature rise sensitive points of an electric spindle and the number of cooling pipes; thirdly, according to the initial temperature maintaining strategy, establishing the functional relationship between the temperature value of cooling liquid output and the relative temperature of the current temperature of the temperature rise sensitive points and the initial temperature of the temperature rise sensitive points. According to the method, with the aim of maintaining the initial temperature of thetemperature field of the electric spindle, the temperature field of the electric spindle does not change obviously from start to finish, and thus the generation of thermal errors is suppressed; through differential closed-loop control over the temperature field of the electric spindle structure, the dependence of the electric spindle on a constant-temperature environment is reduced, the environmental adaptability of the electric spindle is improved, the temperature of the electric spindle structure is stably controlled in a non-constant-temperature environment, and thus the precision, accuracyand robustness of the electric spindle are improved.

The invention provides a voice synthesis method and device and a computer readable storage medium, and relates to the field of artificial intelligence, in particular to a voice synthesis technology inthe field of voice recognition. The method comprises the following steps: acquiring to-be-processed data of a first user, processing the to-be-processed data through the target model; and obtaining first data, wherein the target model is obtained by training a first sub-model of the basic acoustic model based on the personalized training data of the first user, sending the first data to the dataprocessing device, receiving a processing result, and obtaining the processing result by processing the first data by the data processing device based on a second sub-model of the basic acoustic model. Through the data processing method by combining the terminal and the data processing equipment, the requirements on the storage model and the operational capability of the data processing equipmentare reduced, so that the deployment and implementation cost of personalized speech synthesis is greatly reduced.

Provided is software middleware of an industry short message application system. The software middleware of the industry short message application system comprises a business application module and other original business system modules. The software middleware of the industry short message application system is characterized in that a business capacity module, a business management and statistics module and a communication gateway module are arranged in the business application module, the communication gateway module is connected with an industry short message and multimedia message gateway module of an operator, and other original business system modules are connected with the business capacity module. The software middleware of the industry short message application system has the advantages that communication module packaging is carried out on the industry short message protocol of the China Mobile, the industry short message protocol of the China Unicom and the industry short message protocol of the China Telecom, configuration management of protocol channels is achieved, the industry short message protocols, some basic application logic modules and some open integrated interface modules are packaged so that the universal software middleware can be formed, the implementation cycle of the industry short message function of a user is greatly shortened, and the implementation cost of the industry short message function of the user is greatly reduced.

The invention discloses a clock self-synchronizing method in a wireless communication network, and provides a distributed clock frequency calibration method for nodes. The method includes the steps that each node sends a synchronizing sequence to a port at the frequency of the node, when a node in the network obtains the synchronizing sequence of the adjacent node through detection and analysis, and frequency difference between the node and the sending node can be estimated according to the correlation of the synchronizing sequence; if the frequency difference is smaller than a preset range, clock frequency adjustment is not conducted, otherwise, delta is adjusted upwards or downwards, and after a period of time, the clock frequencies of the whole network can be stabilized within a certain frequency difference range. According to the method, on the premise that the wireless communication network is not externally connected with a clock source, synchronizing of a network clock can be maintained through self-synchronizing of clocks among the nodes in the wireless communication network, and interconnection and interworking of the network are guaranteed.

The invention provides a K-K-coherent-reception-based modulation format recognition method. The method comprises: S1, determining an output wavelength and a power of a local oscillator laser device; and S2, restoring a signal constellation point by using K-K coherent reception and a corresponding channel damage compensation algorithm and determining a corresponding modulation format. The K-K-coherent-reception-based modulation format recognition method can be applied to blind detection of a single polarization signal modulation format type in a new-generation optical elastic network. On the one hand, only one PD is needed to complete signal reception; and compared with the traditional modulation format recognition plan, the K-K-coherent-reception-based modulation format recognition methodenables the implementation cost and complexity to be reduced substantially; and on the other hand, the signal amplitude and phase are restored based on the K-K algorithm and the algorithm is implemented simply; and almost all modulation formats can be identified.

Disclosed are a delay adjustment method and data converter; the delay adjustment method comprises: the delay adjustment unit of a data converter receives a fixed clock; the delay adjustment unit of the data converter adjusts the fixed clock using a first adjustment amount to obtain a sampling clock, and adjusts the fixed clock using a second adjustment amount to obtain a clock for digital processing; the delay adjustment unit sends the sampling clock to the converter core of the data converter, and sends the clock for digital processing to a digital clock unit of the data converter. The present invention can realize delay adjustments within the data converter, thus reducing the design complexity and cost of the clock.

The invention discloses a device and method for detecting high-speed optical communication transmitting equipment, and belongs to the optical transmitting equipment and signal detection technology inthe optical communication field. The device comprises a high-speed photoelectric detector unit, a low-speed analog-to-digital converter unit, an equalization filtering processing unit, a software synchronous processing unit, and a display unit. The method comprises the following steps: 1, outputting a modulated optical transmitting signal through the optical transmitting equipment; 2, converting the optical transmitting signal output by the optical transmitting equipment into a baseband analog electric signal; 3, sampling the baseband analog electric signal to obtain a discrete digital sequence; 4, performing the digital equalization filtering processing to obtain an equalization digital sequence; 5, performing the chirp Z-conversion software synchronous treatment to obtain equivalent synchronization time of the equalization digital sequence; and 6, performing eye pattern reconstruction and display on the equalization digital sequence, comparing with the preset eye pattern template tojudge whether the optical transmitting equipment is qualified. Through the device and method disclosed by the invention, the realization difficulty and cost are effectively reduced; the small and portable analyzer can be developed so as to satisfy the demands of quickly and conveniently checking the products.

The invention provides a self-adaptive broadband digital zero setting system and method based on a Zynq chip. The self-adaptive broadband digital zero setting system comprises an upper computer, a Zynq chip module and an AD/DA conversion module; the upper computer is connected with the Zynq chip module and is used for sending a working mode instruction and receiving returned monitoring data, and the Zynq chip module is connected with the AD/DA conversion module and is used for forming wave beams, sending wave beam data to the AD/DA conversion module, generating intermediate frequency signals of a zero setting circuit and transmitting the intermediate frequency signals to a subsequent circuit, wherein the AD/DA conversion module is used for inputting the intermediate frequency signal subjected to AD sampling into the Zynq chip module and receiving beam data generated by the Zynq chip module. The self-adaptive broadband digital zeroing circuit can replace a previous expensive FPGA + DSP framework under the background of a small-scale array, the two units are independently, parallelly and cooperatively work, the high-speed data interaction function is achieved through an AXI-GP interface and an AXI bus in the Zynq, the overall performance of the system is further improved, and the self-adaptive broadband digital zeroing circuit design is efficiently achieved.

The invention discloses an image stabilization control system and an image stabilization control method of fast reflectors. The image stabilization control system comprises an imaging assembly, a photoelectric detector, a position information processor, a controller and a driving device, wherein the imaging assembly receives an optical signal and generates a to-be-detected image; the photoelectricdetector receives the to-be-detected image and converts the to-be-detected image into an electric signal; the position information processor receives the electric signal and calculates image offset of the electric signal; the controller receives the image offset, calculates target angle positions required by the fast reflectors according to the image offset, obtains a current position of each fast reflector, and calculates to obtain the driving amount required by the faster reflectors according to the current positions and the target angle positions of the fast reflectors; and the driving device drives the current fast reflector to perform swing angle motion according to the driving amount required by the current fast reflector. Through using a jitter detection module composed of the independent imaging assembly, the photoelectric detector, the position information processor and the controller, when a plurality of imaging telescopes exist at the same time, the same jitter detection module can be used together, and therefore the implementation difficulty and cost are reduced.

The invention provides an S-BOX initialization method and S-BOX initialization device for carrying out a RC4 algorithm with efficiency in a communication hardware. At present, the RC4 algorithm is widely applied to data encryption in data communication. Before encryption and decryption for per frame data, a seed which is formed by connecting a key and an initialization vector is used for initializing the S-BOX of RC4. As regards a receiving process, the KEY and the IV must be obtained at the moment of frame arrival and then the initialization process of the S-BOX can be started. As the reception of a frame body is followed by the reception of IV, when the S-BOX is initialized, a corresponding cache must be set to save a received keystream byte. And the size of the cache is proportional to the initialized time length of the S-BOX. The method provides an efficient initialized method of the S-BOX which can effectively speed the S-BOX initialization process under the condition of with no need of increasing hardware sequence so that the hardware cache size is reduced and the hardware cost is reduced.

The invention discloses a register architecture of an RISC architecture processor, a register block and the RISC architecture processor, and relates to the technical field of processors. The register architecture comprises a plurality of general registers and a plurality of special registers; wherein the general register is used for being provided for a processor to execute general read-write operation on the general register according to an instruction of the general register; and the special register is used for enabling a processor to execute condition judgment, jump type operation or operation type operation on the special register according to a specified instruction. Therefore, the types of processor instruction set condition judgment/jump type instructions can be reduced, the types and the number of instructions specially used for processing zone bits and calculation results exceeding bit width are reduced, the implementation difficulty and the cost of processor hardware design are reduced, the performance of the processor for executing condition judgment, jump type operation or operation type operation is improved, and the method and the device are suitable for popularization and application. And the instruction overhead of the operation is reduced, and the performance of the processor is not obviously reduced.

The invention discloses an apparatus and method for generating a spectral amplitude code label by using an adjustable optical filter and belongs to the technical field of optical communication. The apparatus comprises a frequency-sweeping laser source generating device, the adjustable optical filter, and an electro-optical modulator. The frequency-sweeping laser source generating device generates a frequency-sweeping laser source with constant power and operating frequency linearly varying with time and inputs the frequency-sweeping laser source into the adjustable optical filter. The frequency sweeping velocity of the frequency-sweeping laser source is consistent with electric label signal rate. The adjustable optical filter performs frequency selection on the frequency-sweeping laser source according to a preset frequency interval so as to obtain a SAC initial light source and input the SAC initial light source into the electro-optical modulator. The electro-optical modulator generates a SAC optical label signal after performing electric label signal modulation on the SAC initial light source. The method comprises: generating a frequency-sweeping laser source with constant power and operating frequency linearly varying with time based on the electric label signal; performing frequency selection on the frequency-sweeping laser source according to the preset frequency interval so as to obtain the SAC initial light source and then generating the SAC optical label signal based on same. The apparatus and the method are used by an optical label exchange system and are low in complexity and high in transmission rate.

The invention discloses a low sampling rate-based time reversion wireless energy transmission system and method. An energy transmission device in the system comprises a master controller, a detectionsignal generation device and a reverse signal generation device, the device to be energy-transmitted comprises a passive chip, a switch circuit, an energy storage capacitor and a rectification matching module, the master controller is connected with the detection signal generation device and the reverse signal generation device, the detection signal generation device and the reverse signal generation device both are in wireless connection with the device to be energy-transmitted, the passive chip is connected with the rectification matching module and is connected with an energy storage capacitor via the switch circuit, an analog-to-digital conversion module in the reverse signal generation device comprises a plurality of low-rate analog-to-digital converter, the digital-to-analogue conversion module, a first digital signal processing module, a time reversion module, a second digital signal processing module and the analog-to-digital conversion module are sequentially connected, and the analog-to-digital conversion module comprises the plurality of low-rate digital-to-analogue convertors. The system is easy to implement, is low in cost, far in transmission distance and high in efficiency.

The invention provides phytoplankton microscopic image acquisition equipment and a microscopic image observation system, and relates to the field of optical microscopic shooting. According to the invention, two accommodating grooves matched with an eyepiece sleeve of a binocular microscope are formed in an accommodating shell; the accommodating shell is arranged on the binocular microscope in a sleeving manner through the two accommodating grooves; a mounting through hole is formed in the bottom of each accommodating groove; each camera is correspondingly mounted in one mounting through hole;then, an image processing unit mounted in a hollow cavity is electrically connected with the two cameras; the image processing unit respectively collects a left ocular lens microscopic image and a right ocular lens microscopic image through the two cameras for image combination to obtain a microscopic image to be displayed; and finally, the image processing unit transmits the microscopic image tobe displayed to display equipment through a communication unit to be displayed, so that the realization cost and the operation difficulty are reduced, and the equipment compatibility is improved whilethe image definition of the acquired phytoplankton microscopic image is improved.

The invention is applicable to the field of medical equipment, and discloses a depth measurement detector unit, a function depth calculation method for the depth measurement detector unit and a detector. The depth measurement detector unit includes two scintillation crystals arranged side by side and two photodetectors arranged at the ends of the two scintillation crystals respectively, a gap between the two scintillation crystals includes a first layered space close to the photodetectors, a second layered space far away from the photodetectors and a third layered space located between the first layered space and the second layered space. The first layered space is filled with a first reflective film, the second layered space is filled with an optical coupling body, and the third layered space is filled with air. According to the depth measurement detector unit, the depth is read through the single-ended photodetectors without complicated processing of the scintillation crystals, the achieving difficulty and cost of the detector function depth measurement are reduced, and the depth measurement detector unit has high depth resolution and time resolution and good consistency.

The invention provides an explosion-proof battery power supply, which comprises a box body, an explosion-proof box body, a battery module, a first encapsulation layer and agas treatment device; a first area of the battery module in the box body comprises all the electrodes, and a second area comprises all the pressure release valves; the first encapsulation layer covers the first area, and first openings of the first encapsulation layer correspond to the pressure release valves, so that the pressure release valves can exhaust air through the first openings; and the gas treatment device is arranged in the box body and is used for treating gas released in the thermal runaway process of the battery module. A gas treatment mechanism is realized by adopting the gas treatment device, so that theinfluence of gas released by thermal runaway of the battery on the peripheral environment of the box body is effectively reduced, the overall application safety of the explosion-proof battery power supply is improved, the realization cost and weight of the battery explosion-proof mechanism are effectively reduced, and the explosion-proof battery power supply is ensured to be not damaged except the encapsulated battery module when an explosive environment occurs. other exposed conductors except the encapsulated battery module are not electrified when an explosive environment occurs, so that the contact between an ignition source and explosive gas is blocked in time, and the economy and the explosion-proof control effect of an explosion-proof mechanism are effectively improved.

The invention provides a parameter value obtaining method and electronic equipment, and the method comprises the steps: obtaining the parameter value of a preset image parameter according to the dataof an image photographed by a camera; obtaining a parameter value of a preset induction parameter according to the parameter value of the preset image parameter and a preset corresponding relationship; wherein the preset corresponding relationship comprises a first corresponding relationship between the parameter value of the preset image parameter and the parameter value of the preset induction parameter. According to the scheme, the camera of the electronic equipment can be used for obtaining the parameter values such as the ambient brightness value of the current environment and the distance value between the shooting main body and the camera; the implementation cost and difficulty of the scheme are reduced, and the problems that in the prior art, cost is high and difficulty is large when electronic equipment achieves light induction, distance induction and other induction functions are well solved.

The invention provides a multi-radio system and a radio frequency module, belonging to the technical field of communication. The radio frequency module comprises a local oscillation input port, a local oscillation output port, a local oscillation source for generating a local oscillation signal, a switch, a detection circuit and a power distribution circuit, wherein one end of the switch is connected with the input end of the power distribution circuit while the other end of the power distribution circuit is connected with the local oscillation input port and the local oscillation source, one output end of the power distribution circuit is connected with the local oscillation output port while the other end of the power distribution circuit is connected with an internal circuit needing the local oscillation signal; the detection circuit is connected with the control port of the switch and the local oscillation input port, when inputting of the local oscillation signal is detected at the local oscillation input port, the switch is controlled to switch to the local oscillation input port, and when inputting of the local oscillation signal is not detected at the local oscillation input port, the switch is controlled to switch to the local oscillation source. The multi-radio system and the radio frequency module can simply and conveniently realize local oscillation synchronization.

The invention relates to an online synchronous expectoration method. The method comprises the following steps: S1, collecting airway pressure; S2, extracting the ventilation characteristics in a non-expectoration time interval; S3, identifying a pressure drop mutational site in an expectoration time interval; and S4, determining whether the pressure drop mutational site in the S3 is matched with the ventilation characteristics in the S2, triggering expectoration if so, otherwise not triggering expectoration. The invention further correspondingly provides an online synchronous expectoration system. The system comprises an expectoration pipeline, wherein the expectoration pipeline is provided with a connector; three ends of the connector are respectively connected to a respirator, a patientand a cough assist; and the cough assist can be used for detecting the airway pressure in the connector, and whether expectoration of the cough assist is triggered or not is controlled based on the pressure in the airway.

This invention discloses a kind of method and device to produce the correlating sequence code. It belongs to the field of testing the performance of the network by pseudo-random binary sequence code. Establish the table-building and code-producing device. Table-building device establishes the incremental mode table associated with the sequences code for different cascade model, and produces the correlating sequence code for each channel according to the incremental mode table. The correlating sequence code producing method and device in this invention removes the connection between different channels in the cascade model, so when it is time to insert the PRBS code; it is only needed to know the last code in this channel without the inquiry in other channel. As the result, it largely reduces the complexity of the producing device and method, as well as the cost.

The invention belongs to the technical field of driving equipment, and in particular to a cam driving device and automatic equipment. The cam driving device comprises a support frame body, a pluralityof cams with different appearances and contours, a plurality of swinging pieces and a switching transmission mechanism, the cams are arranged on the first installation side of the supporting frame body and driven by a driving mechanism to rotate, the swinging pieces are arranged on the second installation side of the supporting frame body, and the switching transmission mechanism is in transmission connection with the swinging pieces and used for driving the designated swinging piece to abut against the corresponding cam so that the cam drives the designated swinging piece to rotate. Therefore, the transmission mechanism is switched to drive the different swinging pieces to swing along with rotation of the corresponding cams, so that different swinging rules of the swinging pieces of thecam driving device are output, the cams are cooperated with the swinging pieces to realize movement, the cam does not need to be replaced and debugged, then the implementation and operation cost is remarkably reduced, the debugging time is remarkably shortened, and the operation efficiency is improved.