| 摘要 |
<p>A proximity alert system (2) for monitoring the presence of at least one object (60, 64, 66, 68, 70), which system (2) comprises a portable master unit (6) and at least one slave unit (8), which slave units (8) are adapted to be attached to an object (60, 64, 66, 68, 70), which master unit (6) comprises a warning member (10) and means (12) by which the warning member (10) device is caused to output a warning signal when the distance between the master unit (6) and at least one of the slave units (8) exceeds a pre-determined adjustable value, which master unit (6) is adapted to control the connection to at least one slave unit (8) and caused to output a warning signal if one connection fails. At least one slave unit (8) is provided with an adhesive member (14), which adhesive member (14) is adapted to be attached to an object (4) so that the slave unit (8) is attached to the object (4). The system (2) can be applied in relation to different kinds of objects (60, 64, 66, 68, 70), in particular small objects (60, 64, 66, 68, 70) and personal belongings like glasses (64), medicine contained in a pill bottle (62), a purse (67), keys (55), a passport, a credit card (56), a camera (70), a mobile phone, a portable computer and a PDA.</p> |
