| 摘要 |
A multi-purpose monitoring system which is suitable for natural disaster alarms and in which a telecom network is provided with data processing means arranged to receive warning signals from a plurality of geographically dispersed vibration detectors and to send alarm messages to a group of receivers. According to the invention, the detectors are arranged to monitor local capacitances to earth and to send status reports on these to the data processing means subsequent to the warning signals and within a preset time window enabling post-event analysis of local damages before the alarm messages. |
