30results about How to "The output is stable" patented technology

The invention provides an electroencephalogram sleep staging method based on a deep convolutional neural network. The electroencephalogram sleep staging method comprises the following steps that S1, sleep signals of a subject are collected, and multi-lead electroencephalogram signals in the sleep signals are extracted; S2, performing data preprocessing on the electroencephalogram signals; S3, constructing and training an end-to-end deep convolutional neural network classifier; and S4, performing electroencephalogram sleep staging by using the deep convolutional neural network classifier. Compared with the conventional CNN electroencephalogram sleep staging method, the electroencephalogram sleep staging method provided by the invention has the advantages that under the condition of the sameiteration times and learning rate, each batch of the model adopts higher data, and the obtained output result is more stable. In terms of accuracy and F score, the method provided by the invention has better classification performance.

The invention provides a water processor for conditioning content of mineral substances of water based on purification. The content of the mineral substances of effluent water can be controlled by conditioning the angle of a valve which is connected in parallel with reverse osmosis, the conditioning method is simple, results is directly displayed by a display circuit, and the effect is intuitional. The water processor adopts brand-new process control technology, generates brand-new results which cannot be generated by the prior material technology, creates brand-new water quality which can hardly universally exist in the natural world, and creates and meets the brand-new usage classification and usage requirement, so that users can conveniently and personally participate in the technology to determine the water quality required by the users, such as 'best mouthfeel' water with water hardness of 30mg / L, 'most proper for people requirement' water with the water hardness of 170mg / L, or proper water for tea making, or skin beautifying water and other brand-new usages and requirements. The controllability of the process and flexible intelligence of computer program ensure the water quality to be more reasonable, and represent one of new development directions of water quality processing technology in the future.

The invention discloses a two-stage fast classifier based on a linear classification tree and a neural network. Design of the classifier is fundamental and critical in machine learning and pattern recognition, and the classifier is widely applied to numerous fields of data mining, data analysis, expert systems, biomedicine, agriculture and the like. The classifier achieves splitting and recognition of normal massive various sample sets with distinguished features. In normal conditions, the sample sets are approximately divided into linearly separable and linearly inseparable classes. Firstly, the linearly separable sample sets are classified, namely the classes distinguished in features are classified by related statistical knowledge to form the linear classification tree; secondly, relatively unimportant samples are deleted in order to increase correct resolution ratio of the neural network; and thirdly, since the neural network has strong approximation capability and generalization capability, the nonlinear classifier is the classifier based on the neural network. Aiming at long training time of the neural network, scale of the samples is decreased by the linear classification tree and the dimension reduction technology. Besides, the problem of unstable output of the neural network is solved by adjusting objective function of the neural network and verifying whether training indexes of the neural network meet requirements or not.

An image processing circuit and method thereof for enhancing text displaying of an image are provided. The image processing circuit performs the method. Firstly, at least a first illumination area and at least a second illumination, which is located adjacent to the first illumination area in the image are defined according to luminance values of a plurality of pixels of the image. Next, a luminance regulation value of at least one of the pixels in the first illumination area is calculated, and the luminance value of the corresponding pixel in the first illumination area is adjusted according to the luminance regulation value. During processing of the image, the luminance values of all of the pixels in the second illumination area are restricted from any adjustment.

An image processing circuit and method thereof for enhancing text displaying of an image are provided. The image processing circuit performs the method. Firstly, at least a first illumination area and at least a second illumination, which is located adjacent to the first illumination area in the image are defined according to luminance values of a plurality of pixels of the image. Next, a luminance regulation value of at least one of the pixels in the first illumination area is calculated, and the luminance value of the corresponding pixel in the first illumination area is adjusted according to the luminance regulation value. During processing of the image, the luminance values of all of the pixels in the second illumination area are restricted from any adjustment.

The invention discloses a method and system for detecting a weak vital sign signal of an airborne radar. The method comprises steps controlling the airborne radar to scan a target region, and obtaining a multichannel echo signal of the target region; preprocessing the echo signal to obtain multi-channel coherently superimposed image domain data; making image domain data be subjected to processingof any one or more of motion compensation, iterative side lobe suppression and strong reflection detection to obtain a corrected target; and detecting and tracking the positions of targets, and outputting the number and real-time positions of the targets. The method is advantaged in that an unmanned aerial vehicle platform and the radar are integrated, a micro human body target in the target areacan be accurately detected and positioned, static false alarms caused by the wall and the ground can be filtered out, the radar detection speed is high, and radar detection efficiency is high.

The invention provides a 4-10 decoder design method based on strand displacement, and relates to the field of DNA strand displacement. According to the method, firstly concentration of DNA signal chains is set according to the input logic value of a DNA 4-10 decoder, and each DNA signal is divided into 10 different DNA signal chains having the same logic value through a fan-out gate module; then hybridization reaction with an AND gate module and an OR gate module is performed based on the Watson-Crick (C-G, T-A) complementary matching principle according to difference of domains attached on the outputted 80 DNS signal chains; and finally 20 DNS signal chains are outputted, and the 20 DNS signal chains represent different logic values according to the size of concentration so that the function of the 4-10 decoder can be realized. The beneficial effects of the 4-10 decoder design method based on strand displacement are that the AND gate module, the OR gate module and the fan-out gate module are combined together based on double tracks firstly so that the DNA 4-10 decoder is realized; and the output result is enabled to be more stable by regulating the concentration coefficient of the threshold gate in the fan-out gate module, the AND gate module and the OR gate module.

The invention provides a generating method and system for an online shopper fake merchandise purchasing index model. A fake merchandise purchasing comment index, a fake merchandise purchasing behaviorindex and a fake merchandise purchasing social sentiment index are respectively generated, wherein the fake merchandise purchasing comment index is generated specifically by acquiring user commoditycomment text data on e-commerce platforms and public news media data; after data preprocessing, user commodity comment texts and public media social sentiment text data are acquired, after that, the data preprocessing is carried out, after various interference data is identified and eliminated, fake merchandise purchasing comment identification, fake merchandise purchasing behavior type judgementand analysis of fake merchandise purchasing social sentiment attitude tendencies of different users are carried out, and the online shopper fake merchandise purchasing comment index is obtained; the generated calculating data of the online shopper fake merchandise purchasing index model is easy to acquire, the output result of the model is unique and more stable, the method can predicate fake merchandise purchasing comment states of certain commodities and certain consumer groups, fake merchandise purchasing behaviors, fake merchandise purchasing social sentiment distribution features and whole developing states in a certain period of time.

The invention discloses a transformer multi-parameter fault monitoring system and a detecting method. Partial discharge signals and vibration signals are respectively collected; the partial dischargesignals are combined with the vibration signals to obtain one combined signal group; amplitude limiting, filtering, and amplification are carried out on the combined signals and then over-voltage andover-current protection are carried out to obtain analog signal output results; and with one group of analog signal output results, two kinds of fault signals can be detected simultaneously. The partial discharge signals are combined with the vibration signals to obtain one combined signal group by using the signal combination technique; the partial discharge fault of the transformer and the internal vibration fault of the winding can be understood simultaneously by observing one group of signals; and the final analog signal output change can be caused no matter which signal group has a problem, so that a transformer fault result is obtained. Therefore, the detection efficiency is improved and the detection accuracy is enhanced stably. The many references are provided for the workers; andthe fault detection and maintenance pressure of the transformer are reduced substantially.

The invention provides a generation method and system of an online shopping user large index model. The generation method and system generate an online shopping consumption index, an online shopping satisfaction index, an online shopping rights protection index, and an online shopping false purchasing index. The online shopping consumption index is calculated through online shopping platform transaction data. The online shopping satisfaction index is calculated through commodity comment text recognition. The online shopping rights protection index is calculated through commodity comment rightsprotection text recognition. The online shopping false purchasing index is calculated through false purchasing text recognition. On the basis of the model calculation results of the steps, an onlineshopping user large index is obtained through model integration calculation, and an online shopping user large index prediction model is obtained through an ARMA model. The calculation data of the online user large index model generated by the method and system can be easily obtained, each output result of the model is unique and stable, and the overall development state of the online consumptionlevel, satisfaction degree, rights protection behavior and false purchasing comments of specific commodities and specific consumer groups in a certain period of time can be dynamically monitored and predicted.

The invention belongs to the technical field of overvoltage protection, and discloses a high-voltage detection circuit for overvoltage protection. The high-voltage detection circuit is characterized by comprising a decoder, an adjustable voltage reduction module and a comparison circuit, wherein the decoder is a 3-8 decoder and comprises three input ports and seven output ports; the adjustable voltage reduction module is used for reducing input high voltage to low voltage and comprises seven sections of voltage reduction circuits, and the seven sections of voltage reduction circuits are respectively matched with the seven output ports; the comparison circuit comprises a positive feedback loop, the positive feedback loop comprises a phase inverter and a lvlshift module, a comparison threshold value of the comparison circuit is set based on the lvlshift module, and comparison between the voltage reduced by the adjustable voltage reduction module and the comparison threshold value is achieved. In conclusion, voltage reduction of different degrees can be effectively formed on the basis of the seven sections of voltage reduction circuits, the area of the voltage detection circuit is reduced, the output result is more stable, and the effect of improving the circuit efficiency is further achieved.

The embodiment of the invention provides a lane line identification method and device, equipment and a storage medium, and the method comprises the steps: obtaining a video, and determining the attribute parameters of the lane line according to the video frame information in the video, and enabling the attribute parameters of the lane line to comprise the type of the lane line, the stability of the lane line and the position of the lane line; determining attribute parameters of historical frame lane lines and attribute parameters of future frame lane lines according to the attribute parametersof the lane lines; and determining the attribute parameter of the current frame lane line according to the attribute parameter of the historical frame lane line and the attribute parameter of the future frame lane line. The invention relates to the technical field of image processing, and the attribute of the lane line of the current frame is reasoned by using the time sequence attribute of the front and rear frames of the video and the output of the segmentation model so that the judgment of the type of the lane line is more accurate, the lane line output result is more stable, and the sudden change of the type is reduced.

The invention belongs to the field of signal processing and particularly discloses a table look-up three-redundant-signal processing method. The method comprises the following steps: (1) measuring values of three redundant channels Vx1, Vx2 and Vx3; (2) calculating difference values delta Vx12, delta Vx23 and delta Vx13 between every two of three redundant signals; and (3) looking up a three-redundant-signal look-up table. The third step includes two sub steps: (3.1) judging the relationship between delta Vx12 and a fault judging threshold delta, between delta Vx23 and the fault judging threshold delta and between delta Vx13 and the fault judging threshold delta and looking up the above table, wherein, when delta Vx12, delta Vx23 and delta Vx13 are smaller than or equal to delta, a global variable K is equal to 0, which suggests that the three channels are normal, and any of the channels is taken as the current three-redundant-signal processing result; and (3.2) continuing judging the relationship between delta Vx12 and delta, between delta Vx23 and delta and between delta Vx13 and delta when the global variable K is not equal to 0 and looking up the above table to obtain a three-redundant-signal processing result. The method can enable the pulse of a three-redundant-signal processing result to be minimized.

The invention provides a laser phase noise-based miniature random number generator. The random number generator comprises a laser device, a coupler, a photoelectric detector, an analog-digital converter and a post-processing module, wherein the laser device generates continuous light or pulse light; the continuous light or the pulse light generates interference at the coupler, and phase noises are converted into an intensity signal; the coupler is connected with the photoelectric detector, and the intensity signal is subjected to photoelectric conversion through the photoelectric detector; the photoelectric detector is connected with the analog-digital converter, and the analog-digital converter performs quantification on an output electric signal of the photoelectric detector to obtain an initial random bit; and the post-processing module performs randomness optimization on the initial random bit to obtain a final random bit. Compared with the prior art, the random number generator has the advantages that an output result is stable, random number generation does not depend on polarization and phase compensation technologies, and the random number generation speed is high.

The invention provides a method and system for generating a rights protection index model of online shoppers based on a rights protection behavior and mode, and the method comprises the steps: obtaining platform text data; carrying out the recognition of the comment texts of rights protection, and carrying out the analysis of the obtained platform text data , wherein the obtained text data comprises platform commodity comment data, platform commodity complaint data and offline commodity complaint data; judging whether the platform text data of the online shoppers is the rights protection comment or not through classification, and recognizing the total number Nbase of rights protection cases of the online shoppers in the platform text data through a cosine similarity calculation algorithm in natural language processing; and generating the rights protection index model of online shoppers. The calculation data of the generated rights protection index model of online shoppers is easy to obtain, and the output result of the model is unique and more stable. The method can achieve the dynamic real-time monitoring and prediction of the overall development situation of the possible rights protection behavior and mode in a certain time period after a specific commodity is purchased online or a specific consumer group performs the online consumption.

The invention discloses a method for detecting phase alternation line (PAL) type video signal subcarrier phase conversion, which comprises the following steps of: acquiring initial identification signals of a PAL row and a national television system committee (NTSC) row; acquiring local identification signals of the PAL row and the NTSC row; and comparing the local identification signals with the initial identification signals, and outputting identification signals of the PAL row and the NTSC row according to the comparison result. A device for detecting the PAL type video signal subcarrier phase conversion comprises an initial identification module for acquiring the initial identification signals of the PAL row and the NTSC row, a local signal generating circuit, a statistical comparison module and a logic control module. The method and the device for detecting the PAL type video signal subcarrier phase conversion finally output the local generated signals and have stable output results.

The invention discloses a prediction type constant-speed box system and a constant-speed control method for a wind generating set. The system comprises a planetary gear train, a control gear, a power source, an anemometer and a controller, wherein the outer circumference of a gear ring of the planetary gear train is arranged to be a gear face meshing with the control gear, a planet carrier and a sun gear of the planetary gear train are fixedly connected with a wind wheel shaft and a generator main shaft of the wind generating set respectively, the power source is in transmission connection with the control gear, the controller is in control connection with the power source, and the anemometer is arranged in a working environment of the wind generating set and is in signal transmission connection with the controller. According to the method, the controller predicts a rotating speed of the wind wheel shaft according to anemometer data, a rotating speed of the control gear is controlled through the power source, and a rotating speed of the generator main shaft is kept constant to be a set target value. When external conditions change, a more stable output result can be obtained through active control, and wind energy is better utilized for power generation.

The invention discloses a method for detecting phase alternation line (PAL) type video signal subcarrier phase conversion, which comprises the following steps of: acquiring initial identification signals of a PAL row and a national television system committee (NTSC) row; acquiring local identification signals of the PAL row and the NTSC row; and comparing the local identification signals with theinitial identification signals, and outputting identification signals of the PAL row and the NTSC row according to the comparison result. A device for detecting the PAL type video signal subcarrier phase conversion comprises an initial identification module for acquiring the initial identification signals of the PAL row and the NTSC row, a local signal generating circuit, a statistical comparisonmodule and a logic control module. The method and the device for detecting the PAL type video signal subcarrier phase conversion finally output the local generated signals and have stable output results.

The invention discloses an erase voltage calibration circuit and a data erase circuit of a nonvolatile memory. On the basis of the prior art, the voltage division circuit and the power supply access port are arranged, the power supply access port is used for accessing an input power supply, and the size of the input power supply of the power supply access port can be adjusted according to requirederasure voltage, so that the calibration circuit is wider in application range and can meet the requirements of different erasure voltages. The input power supply is also used for supplying power tothe comparison circuit instead of a power supply of the nonvolatile memory, so that the voltage ranges of the two input ends in the comparison circuit are improved to a great extent compared with theinput voltage range in the prior art. Therefore, the to-be-calibrated erase voltage does not need to be subjected to excessive voltage division, the error in the calibration process is greatly reduced, and the calibration precision is greatly improved. In addition, the voltage obtained after the first voltage is divided by the voltage division circuit can also be used as a calibration reference voltage of the comparison circuit.

The invention belongs to the technical field of overvoltage protection, and discloses a high-voltage detection circuit for overvoltage protection, which is characterized by comprising a decoder, an adjustable step-down module and a comparison circuit; the decoder is 3- 8-decoder, including three input ports and seven output ports; the adjustable step-down module for reducing the input high voltage to a low voltage, including the seven-segment step-down circuit, and the seven-segment step-down The circuits are respectively adapted to the seven output ports; the comparison circuit includes a positive feedback loop, and the positive feedback loop includes an inverter and an lvlshift module, and the comparison threshold of the comparison circuit is set based on the lvlshift module, and the adjustable drop is realized. The comparison between the voltage after the step-down of the voltage module and the comparison threshold; to sum up, the present invention can effectively form different degrees of step-down based on the seven-segment step-down circuit, reduce the area of ​​the voltage detection circuit, and make the output result more stable , and also has the effect of improving circuit efficiency.

The invention relates to the field of strand displacement, and discloses a design method of a four-bit BCD code summator based on DNA strand displacement. In the design method, a thought of double rail logic is introduced, a monorail logic circuit comprising 17 alternative denial gates, 12 nor gates, 2 or gates and 1 and gate is simulated through a DNA strand and is converted into a double rail logic to be participate in a reaction. The method ensures that reaction is more stable and efficient, and logic of consequence obtained is clearer and easy to understand. From the view of experimental data and experimental results, the method not only can correctly process carry bit and overflow during operation, but also is high in efficiency and stable in result, and explains the design effectiveness of the summator.

The invention discloses a passive type constant-speed transmission control system for a wind generating set. The system comprises a planetary gear train, a control gear, a power source and a controller, wherein a planet carrier and a sun gear of the planetary gear train are fixedly connected with a wind wheel shaft and a generator main shaft of the wind generating set, the control gear meshes with a gear face on the outer circumference of a gear ring of the planetary gear train, and the controller controls a rotating speed of the control gear through the power source. The invention further discloses a constant-speed control method for the wind generating set. The controller controls the rotating speed of the control gear through the power source, then a rotating speed of the gear ring is controlled, and a rotating speed of the generator main shaft of the wind generating set is kept constant to be a set target value. The mechanical structure of the wind generating set is simplified, a stable output result can be obtained when external conditions change, and wind energy is better utilized for power generation.

The invention relates to an on-orbit detection method for a steel rail in a running state. The detection method comprises the steps of information acquisition, image acquisition, image preprocessing, judgment and classification of a neural network model, regression analysis of a multiple linear regression model, relative error calculation and information transmission. Real-time detection of the damage condition of the steel rail in the running state is achieved, interpretation is conducted through the neural network algorithm with the deep learning capacity, the confidence coefficient and stability of interpretation are improved, regression analysis is conducted on the interpretation result through the multiple linear regression model, the influence of train running parameters and meteorological parameters on the interpretation result is effectively avoided, and the detection result is closer to the real situation; and meanwhile, the invention further provides detection equipment based on the steel rail on-orbit detection method, and compatible sharing, intercommunication and interconnection with a train control system are effectively achieved through equipment carrying, wire harness integration and program implantation.

The invention discloses a transformer multi-parameter fault monitoring system and a detecting method. Partial discharge signals and vibration signals are respectively collected; the partial dischargesignals are combined with the vibration signals to obtain one combined signal group; amplitude limiting, filtering, and amplification are carried out on the combined signals and then over-voltage andover-current protection are carried out to obtain analog signal output results; and with one group of analog signal output results, two kinds of fault signals can be detected simultaneously. The partial discharge signals are combined with the vibration signals to obtain one combined signal group by using the signal combination technique; the partial discharge fault of the transformer and the internal vibration fault of the winding can be understood simultaneously by observing one group of signals; and the final analog signal output change can be caused no matter which signal group has a problem, so that a transformer fault result is obtained. Therefore, the detection efficiency is improved and the detection accuracy is enhanced stably. The many references are provided for the workers; andthe fault detection and maintenance pressure of the transformer are reduced substantially.

The invention provides a 4-10 decoder design method based on strand displacement, and relates to the field of DNA strand displacement. According to the method, firstly concentration of DNA signal chains is set according to the input logic value of a DNA 4-10 decoder, and each DNA signal is divided into 10 different DNA signal chains having the same logic value through a fan-out gate module; then hybridization reaction with an AND gate module and an OR gate module is performed based on the Watson-Crick (C-G, T-A) complementary matching principle according to difference of domains attached on the outputted 80 DNS signal chains; and finally 20 DNS signal chains are outputted, and the 20 DNS signal chains represent different logic values according to the size of concentration so that the function of the 4-10 decoder can be realized. The beneficial effects of the 4-10 decoder design method based on strand displacement are that the AND gate module, the OR gate module and the fan-out gate module are combined together based on double tracks firstly so that the DNA 4-10 decoder is realized; and the output result is enabled to be more stable by regulating the concentration coefficient of the threshold gate in the fan-out gate module, the AND gate module and the OR gate module.

The invention belongs to the field of signal processing, and specifically discloses a look-up-type three-redundancy signal processing method, which includes the following steps: (1) measuring the three-way redundant channel V x1 , V x2 or V x3 (2) Calculate the difference ΔV between two pairs of three redundant signals x12 , ΔV x23 , ΔV x13 ; (3) Query the triple redundant signal lookup table: (3.1) Judgment ΔV x12 , ΔV x23 , ΔV x13 and the relationship between the fault judgment threshold value Δ, and check the table above: when ΔV x12 , ΔV x23 , ΔV x13 When it is less than or equal to Δ, the global variable K=0, indicating that the three channels are normal, and one channel is selected as the current three-redundant signal processing result; (3.2) When the global variable K is not equal to 0, continue to judge ΔV x12 , ΔV x23 , ΔV x13 The relationship with Δ, and look up the above table to get the result of triple redundant signal processing. This method can minimize the pulsation of triple redundant signal processing results.

The invention provides a speed loss and variable pitch mixed control method for a permanent magnetic direct drive wind generating set and belongs to the technical field of generator control. The speedloss and variable pitch mixed control method for the permanent magnetic direct drive wind generating set comprises the steps that the value of the current wind speed and the values of the real-time power, the rotating speed and the pitch angle of the permanent magnetic direct drive wind generating set are detected; according to the values of the current wind speed, the real-time power, the rotating speed and the pitch angle, an equivalent wind speed method is used for carrying out calculation to obtain the wind speed, namely the equivalent average wind speed received by the front face of thecenter of a hub; and according to the relation between the equivalent average wind speed and the rated wind speed of the permanent magnetic direct drive wind generating set, the power output of the permanent magnetic direct drive wind generating set is controlled. The specific control method comprises three situations that 1, when the current wind speed is smaller than the rated wind speed, maximum power tracing control is adopted; 2, when the current wind speed exceeds the rated wind speed, constant-rotating speed control is adopted; and 3, when the current wind speed exceeds the rated wind speed, constant-power control is adopted. By means of the method, the problem that according to a permanent magnetic direct drive wind generating set variable pitch system, pitch angles are frequentlychanged, and consequently the failure rate is high is solved, and power output is more stable.

The invention provides a signal sensor with magnetic field bias. The signal sensor with magnetic field bias includes a current pulse-generating circuit, a signal sensor, a bias magnetic field apparatus and a waveguide wire, wherein the current pulse-generating circuit is connected with the waveguide wire to form a loop; the waveguide wire passes through the center of the signal sensor; and the bias magnetic field apparatus is arranged at the outside of one end of the signal sensor. The signal sensor with magnetic field bias has the following advantages: by increasing one bias magnetic field apparatus, the signal sensor enables the bias magnetic field generated from a natural magnetic field where the waveguide wire exists to realize fixed polarization so that both the magnetic pole and the field intensity of the magnetic field can be fixed. Therefore, the external magnetic field interference or other cannot influence the magnetic field of the waveguide wire; signal output is stabilized; and the output result is stabilized.