2results about How to "Avoid bit errors" patented technology

This invention relates to the field of smart meter communication data acquisition technology, and discloses a method for anti-interference data acquisition in smart meter communication based on multi-carrier modulation technology. The method includes using multi-carrier modulation to perform frequency division processing on the signal during data transmission, combining channel state perception and dynamic subcarrier allocation strategies to avoid interference frequency bands in real time, and enhancing data robustness through time-frequency joint coding. This application can effectively suppress narrowband interference and impulse noise, improving the communication reliability and data acquisition accuracy of smart meters in complex electromagnetic environments.

The present application relates to the field of wireless power transmission, and provides a coupling coefficient and load real-time observation method, system, equipment and medium for wireless power transmission. The method comprises: performing fundamental wave equivalent processing on a primary side resonant circuit of a wireless power transmission system to obtain an S-S topology fundamental wave equivalent circuit; performing phase lag transformation on the S-S topology fundamental wave equivalent circuit to construct an alpha-beta component model in a stationary coordinate system and obtain an alpha-beta stationary coordinate system voltage equation; performing Park transformation on the alpha-beta stationary coordinate system voltage equation to obtain a primary side voltage state equation in a dq rotating coordinate system; estimating a secondary side induced voltage through an induced voltage observer to obtain a secondary side impedance angle and a load initial estimated value; inputting the secondary side impedance angle and the load initial estimated value into an online updated radial basis neural network to correct and estimate the coupling coefficient and the load, and obtaining a mutual inductance estimated value and a load estimated value. The present application improves the observation accuracy of the coupling coefficient and the load.