| 摘要 |
<p>An approach detection device comprises a mobile terminal antenna body and a mobile terminal side metal strip (10) used for detecting the capacitance in the space sandwiched between the mobile terminal antenna body and the mobile terminal side metal strip (10); and a capacitance detection sensor circuit (11) which is electrically coupled to the mobile terminal antenna body and the mobile terminal side metal strip (10), wherein the capacitance detection sensor circuit judges whether someone is approaching in accordance with the capacitance detected by the mobile terminal antenna body and the mobile terminal side metal strip (10), and outputs an indication signal to indicate that someone is approaching when judging that a person is approaching. Through detecting the capacitance in the space sandwiched between the mobile terminal antenna body and the mobile terminal side metal strip (10) by same, the capacitance detection sensor circuit (11) judges whether someone is approaching in accordance with the capacitance to achieve the approach detection solution, thereby saving the inner space of a mobile terminal, reducing the design difficulty of the mobile terminal, reducing costs, and being beneficial to the miniaturization and lightening and thinning of the mobile terminal.</p> |
