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

The embodiment of the invention provides a method and device for recognizing lane lines, equipment and a storage medium, and the method comprises the steps: obtaining a video, and determining attribute parameters of the lane lines according to video frame information in the video, wherein the attribute parameters of the lane lines comprise the type of the lane line, stability of the lane line andthe position of the lane line; determining attribute parameters of lane lines of historical frames and attribute parameters of lane lines of future frames according to the attribute parameters of thelane lines; and determining the attribute parameters of the lane lines of current frames according to the attribute parameters of the lane lines of the historical frames and the attribute parameters of the lane lines of the future frames. The invention relates to the technical field of image processing, and the attributes of the lane lines of the current frames 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 lines is more accurate, the lane line output result is more stable, and sudden changes of types are reduced.

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 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 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 belongs to the technical field of indoor positioning, and in particular relates to an indoor positioning method based on depth migration and model parameter integration. The present invention utilizes depth migration to implement mean distance minimization constraints and second-order statistical difference minimization constraints on the deep features of the source domain and the target domain, which can minimize domain differences and enable the model to effectively adapt to complex indoor environments. Using the idea of ​​parameter integration, let the model used for prediction use the exponential moving average mechanism to integrate the parameters of the network trained by the gradient descent method in each training step, which reduces the jitter of the neural network during the training process and ensures the stability of the prediction model. Output. The invention can effectively overcome the problem of error increase caused by environmental changes and measurement deviations of heterogeneous equipment in complex indoor environments and the problem of jitter in neural network training.

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.