9 results about "Current noise" patented technology

A display pixel compensation circuit device using a dual-slope includes N channel multiplexers respectively coupled to sensing lines of corresponding channels; a sensing current conveyor configured to sense, on a target sensing line selected by control signals, a drain current of a target pixel's driving thin-film transistor; a noise current conveyor configured to sense, on an adjacent sensing line, panel noise, the adjacent sensing line being next to the target sensing line; and dual-slope error-detection circuitry configured to derive a pixel error from outputs of the two conveyors, convert the error into a sign value and an error value, and store these in a memory. In subsequent frames, the error value is arithmetically added to or subtracted from the digital pixel signal according to the sign value and supplied to respective channels, enabling real-time multi-bit correction with reduced silicon area and improved power efficiency.

The present application relates to the technical field of data processing, more particularly, the present application relates to a kind of power supply monitoring method for atmosphere light bar production, the method comprises: obtaining and preprocessing power supply signal in current time window, obtain current estimated noise sequence;Power supply signal is converted into Hankel matrix and is carried out singular value decomposition, the cumulative energy ratio of each truncation order is calculated;According to current noise level and the degree of aggregation of data in current estimated noise sequence, calculate adaptive energy threshold;Select the minimum truncation order of cumulative energy ratio greater than the threshold as target truncation order, reconstruct Hankel matrix and restore to obtain target power supply signal;Through abnormal detection to target power supply signal, identify power supply anomaly.The present application can improve the filtering effect of SVD filtering to power supply signal, realize the accurate monitoring of power supply anomaly in light bar production process.

This application provides a semantic signal recovery method, an electronic device, and a readable storage medium, belonging to the fields of wireless communication and artificial intelligence technology. The method includes: performing preliminary noise prediction on a distorted semantic signal based on the current noise propagation time step to obtain a preliminary noise component; performing noise reduction estimation on the distorted semantic signal based on the preliminary noise component to obtain an estimated clean semantic signal; performing semantic fuzzing processing on the estimated clean semantic signal to obtain a fuzzy clean semantic signal; adding noise to the fuzzy clean semantic signal based on the preliminary noise component to generate fuzzy adversarial samples; performing sample noise prediction on the fuzzy adversarial samples based on the current noise propagation time step to obtain adversarial sample noise components; and performing skip-denoising on the distorted semantic signal based on the preliminary noise component and the adversarial sample noise components to obtain a target recovery signal. This application embodiment can effectively improve semantic communication efficiency in scenarios lacking prior channel information.

This invention discloses a harmonic-suppressible solid-state transformer, relating to the field of transformer technology. It includes a main housing, an upper conductive partition, a lower conductive partition, a power conversion assembly, a high-frequency transformer assembly, and a harmonic filtering component. The upper and lower conductive partitions divide the main housing into three independent chambers. During operation, the power conversion assembly first performs high-frequency power conversion, followed by voltage transformation and transmission by the high-frequency transformer assembly. Finally, the harmonic filtering component filters out current noise and outputs clean electrical energy. During this process, the electromagnetic radiation and leakage magnetic field harmonics generated by each component are blocked by the physical barriers constructed by the upper and lower conductive partitions. This invention filters harmonics and electromagnetic noise in the current through the harmonic filtering component, thus avoiding harmonic crosstalk.

The present invention provides a power supply system capable of identifying a location where series arc discharge or parallel arc discharge occurs. It is configured that a noise detection means is provided in a positive-electrode-side wiring portion or a negative-electrode-side wiring portion and is located closer to a power supply module than a connection portion with a bypass wiring portion, and an arc determination unit determines that series arc discharge has occurred closer to the power supply module than the bypass wiring portion when a condition (1) or (2) below is satisfied. (1) A series switch unit is closer to the power supply module than the bypass wiring portion, and the arc detection unit detects series arc discharge and the noise detection means detects predetermined current noise or predetermined high frequency noise in a state where the series switch unit is closed and a parallel switch unit is closed. (2) A series switch unit is closer to a power conversion device than the bypass wiring portion, and the arc detection unit detects series arc discharge and the noise detection means detects predetermined current noise or predetermined high frequency noise in a state where a parallel switch unit is closed.

The application provides a low-power consumption ring oscillator, which generates waveforms with phase differences through the ring oscillator, controls waveforms with corresponding phase differences generated on branches in a buffer through the waveforms generated by the buffer, and controls switches with parallel resistors on adjacent branches in the buffer through the three waveforms generated by the buffer, so that the switches on the same branch in the buffer do not exist at the same time, thereby reducing power consumption and current noise and improving the reliability of the circuit in actual application. The original circuit is not subjected to excessive noise reduction.

This invention provides a method for characterizing output current noise considering load-side parasitic parameters, belonging to the field of power supply and motor drive technology. The invention includes the following steps: Step 1: Constructing equivalent models of the parasitic capacitance of the filter inductor and motor inductor to characterize the non-ideal impedance characteristics of the load side under high-frequency conditions; Step 2: Establishing a unified small-signal equivalent model including parasitic parameters on both the bridge arm and load sides, and deriving the output current expression based on the parasitic capacitance equivalent model from Step 1, revealing the intrinsic mechanism by which voltage oscillations at the switching node are conducted to the output side via the parasitic capacitance network, introducing current noise; Step 3: Analyzing the influence of output current characteristics using theoretical simulation methods. This invention improves the accuracy and predictability of power amplifier output current analysis, providing a theoretical basis and methodological support for noise optimization design of high-precision motor drive systems.

This application relates to the field of atomization equipment technology, and provides an atomization device and an atomization apparatus. The atomization device includes: a main housing, on which a magnetic component is provided for magnetic connection with a power supply device, the N pole and S pole of the magnetic component being arranged opposite to each other along a first direction; an atomization component, disposed within the main housing, for heating and atomizing an aerosol generation matrix; and a circuit element, disposed within the main housing and electrically connected to the atomization component, the circuit element having a control circuit, the current direction of the control circuit being a second direction; the first angle formed between the first direction and the second direction is in the range of -45° to 45°. The technical solution of this application makes the current direction in the circuit element compatible with the magnetic pole arrangement direction of the magnetic component, and keeps the first angle within a small angle range, thereby reducing the possibility of current passing through the magnetic field of the magnetic component, alleviating the phenomenon of current noise when the control circuit is working, achieving a noise reduction effect, and improving the user experience.

This invention provides a wired microphone for eliminating current noise, comprising a microphone housing, a metal shield and a microphone circuit inside the microphone housing, the metal shield being detachably connected to the microphone housing, and forming a shielding cavity within the metal shield to omnidirectionally shield external electromagnetic interference; the microphone circuit includes a field-effect transistor Q1 located within the shielding cavity. This invention has the advantages of saving on microphone material costs while eliminating current noise.