Electromagnetic coding switch, and rotation information calculation method and apparatus for rotary wheel
US12425024B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Nov 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94068
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electromagnetic encoding switch and a method for calculating rotation information of a runner. The electromagnetic encoding switch (10) comprises: a runner assembly (11), wherein the runner assembly (11) comprises an LC resonant circuit (111), the LC resonant circuit (111) comprising an inductor L and a capacitor C connected to the inductor L, the inductor L having a magnetic core, and the inductor L being used for receiving and transmitting electromagnetic waves; a runner (112), the LC resonant circuit (111) being disposed on the runner (112); a transceiver unit (12), the transceiver unit (12) comprising an antenna (121) disposed below the runner (112) and used for transmitting electromagnetic waves at a preset frequency in a transmitting period, so that the LC resonant circuit (111) receives energy in the transmitting period; and an antenna selection switch (122) connected to the antenna (121). The electromagnetic encoding switch (10) has no mechanical noise and is low-cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.