| 摘要 |
A virtual perimeter system 100, (200, figures 4 and 5) for determining a position of a mobile device 150, (250) relative to a (wireless) virtual perimeter 120, (220), comprises: a plurality of transmitters 110, (210) configured to broadcast a unique identifier; a management platform for storing positional data for each transmitter; and a mobile application for installation on a mobile device. The management platform is configured to communicate with the mobile application. The transmitters are positioned to define the virtual perimeter around a target entity. The management platform is configured to: (a) map the perimeter dependent upon the positional data; (b) receive transmitted data from the mobile application when it detects the unique identifier the transmitters and determine a proximate location of the mobile device; and (c) send an alert to the mobile application for display on said mobile device. The perimeter comprises a perimeter profile stored on the management platform comprising target entity information having a mobility status of the entity. The transmitters comprise wireless technology, such as Bluetooth Low Energy (BLE), configured to exchange data over short distances and employing universally unique identifiers (UUI). Each perimeter profile comprises an entity name, e.g. Substation or Hazardous Waste Train. |
