| 摘要 |
A synchronisation system for synchronisation of multiple markers (12,13,14) in a geographical location or waterway (16). Synchronisation is achieved by periodically re-synchronising each marker (12,13,14) to a common reference signal. A wireless communications system is used to distribute the reference signal to isolated markers. The markers (12,13,14) are also remotely monitored to indicate the status of multiple markers which is communicated to a central control centre. The status can indicate the number of spare light bulbs left, the status of the spare bulbs, the correct or incorrect flashing of the light, unauthorised entry to or tampering with the marker or lighthouse, the condition of the battery and/or the correct function of a solar panel or other remote power source. The status of multiple markers is then communicated to a central control centre or to another location.
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