| 摘要 |
<p>The present invention provides a liquid volume measuring apparatus in a container, which is conveniently installed in case a liquid volume in a container is not visible and an installation environment is poor, and which reduces installation costs. According to the present invention, the liquid volume measuring apparatus using RFID comprises: a tag installed inside the container to output a radio frequency signal which is changed in accordance with a level of the liquid in the container; a reader antenna receiving the radio frequency signal from the tag; and a reader electrically connected with the reader antenna and processing the radio frequency signal from the tag provided by the reader antenna.</p> |
