Alarm-device system and detection method thereof

The invention discloses an alarm-device system which includes detection mechanisms, a processing mechanism and a communication mechanism. The detection mechanisms are distributed at a plurality of positions of a monitored space. The processing mechanism and the communication mechanism are arranged outside the monitored space. The detection mechanisms are connected with the processing mechanism and the communication mechanism through fireproof cables. Each detection mechanism includes an infrared detector, a CO detector, a CO2 detector, a smoke particle detector and a wide-angle camera. The processing mechanism includes a CPU, a data storage unit and a storage battery unit. The communication mechanism includes a GPS module, a CDMA module, a GPRS module and a CDPD module. The invention also discloses a detection method used for the above-mentioned system. The alarm-device system and the detection method thereof are capable of improving defects of the prior art; and the alarm-device system and the detection method thereof system change sampling structures and judgment methods in the prior art, reduce the data processing quantity, and improve the accuracy and reduce the error report rate at the same time.