6results about How to "Increase data transfer rate" patented technology

This invention discloses a partial discharge (PD) signal denoising method based on image information entropy and multivariate variational mode decomposition (MMD). The method involves converting the noisy signal into a grayscale image, calculating the image information entropy, and optimizing the number of modes K in the MMD by combining Pearson correlation coefficient and execution efficiency to determine the optimal value. The noisy PD signal is then decomposed. The kurtosis value of each intrinsic mode component is calculated, and the nature of the mode component is determined based on a threshold, classifying it as either a dominant PD component or a noise component. A mathematical statistical method using the 3σ criterion is employed to filter out normally distributed white noise. The reconstructed signal is then denoised using an improved wavelet thresholding method to obtain the denoised PD signal. This denoising method accurately reduces noise in noisy PD signals, achieving good noise suppression and restoring the waveform characteristics of the PD signal while maintaining high execution efficiency.

The application provides a compound eye type visible light multiple access communication method, and belongs to the technical field of visible light communication. The communication method fully utilizes the characteristics of a complex channel environment, designs a light receiving end composed of multiple PDs in a VLC system into a compound eye type multiple PD receiving layout mode, and provides a corresponding communication method according to the designed compound eye type PD receiving layout mode. Compared with using a single PD to realize data transmission of the VLC system, the application can fully utilize the characteristics of the complex channel environment, design the light receiving end composed of multiple PDs into the compound eye type receiving layout mode, not only can sufficiently utilize the visible light signals in the complex space scene, improve the received light signal strength, but also can multiplex the visible light communication channel, realize data communication transmission of multiple LEDs, and further improve the data transmission rate of the VLC system.

The present application relates to the technical field of self-driven measurement-while-drilling tool, and particularly relates to a self-driven along-drill-string measurement system based on a friction nanogenerator. The technical scheme comprises a friction nanogenerator, an energy management unit, a low-power wireless communication relay node and a ground control terminal. The friction nanogenerator is used to collect the vibration energy of the drill pipe and convert it into electric energy. The friction nanogenerator adopts a sliding independent layer structure and comprises a rotor and a stator. The present application realizes distributed self-driving by deploying the friction nanogenerator at each communication node and utilizing the downhole vibration energy. The energy converted by the friction nanogenerator at the drill bit is enough to emit stronger communication signals, ensuring sufficient energy supply, rapid response of communication content and efficiency, developing information transmission technology with continuous power supply and low-power operation in the process of measurement-while-drilling, and realizing bidirectional communication of information, which has remarkable engineering value for difficult-to-exploit oil and gas resources.

This utility model discloses a connector with OTG functionality. It comprises a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit. The first interface unit connects to a mobile terminal. The communication authentication unit authenticates the mobile terminal's communication. The boost unit receives the voltage signal from the mobile terminal processed by the communication authentication unit and supplies power to the OTG device and data transmission control unit connected to the third interface unit. The mobile terminal transmits data with the OTG device through the data transmission control unit. When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit, the second interface unit connects to a charging input terminal to power the mobile terminal and the OTG device, enabling simultaneous charging and data transmission between the mobile terminal and the OTG device, thus improving the data transmission rate. When the voltage is insufficient, the charging input terminal supplies power to the mobile terminal, the data transmission control unit, and the OTG device, ensuring data transmission stability.

The embodiment of the application discloses a simulation system, and belongs to the simulation field. Wherein, the simulation system comprises a hardware control end, comprising a hardware controller; a simulation model end, comprising a simulation model; a communication end, in communication connection with the hardware control end and the simulation model end, for transmitting communication data between the hardware control end and the simulation model end, so as to simulate the simulation model by using the hardware controller; the communication end comprises communication hardware, and the communication hardware is used for processing communication protocols to realize the transmission of the communication data. The embodiment of the application has the technical effects of fast response speed and small delay, and improves the data transmission rate in the simulation process.

This application provides a method and apparatus for modeling and fading analysis of a geometric random channel model based on environmental awareness. The method includes the following steps: acquiring the location information of obstacles in the environment and constructing an environmental awareness map using an occupancy grid algorithm; establishing a random channel model based on the environmental awareness map and the signal propagation path; wherein the signal propagation path includes a line-of-sight path and a single-hop path. In this application embodiment, by establishing a geometric random channel model based on environmental awareness, the accuracy of channel modeling is significantly improved. Compared with geometric random channel models in related technologies, it can obtain a channel impulse response closer to the real scene and more realistically reflect the distribution of obstacles and signal propagation characteristics in the environment.