Remote Monitoring System

 

REMOTE MONITORING BY GPS & GSM SYSTE
(For Buoys and Shore beacons)

ANST has developed a versatile remote monitoring system which uses the GSM cellular telephone network. The system is suitable for monitoring off-shore and on-shore stations, 24 hours a day from your designated telephone.

 

The outstation is fitted with GPS receiver and 900/ 1800 MHz band GSM cellular radio unit that interfaces with the microprocessor running ANST software. Each station is associated with its own telephone number stored on a SIM card. At the receiver station one or more designated cellular telephones can be activated.

 

The system carries following function.

1.         Monitoring of LED Lights

During night conditions the navigation Light is constantly monitored by measurement of the LED Current. If the LED Current is not detected or remains consistently below a set level, a “Light fail” message will be sent to all the designated mobile telephones.
2.         Monitoring of Battery Voltage
The system regularly measures the voltage and a Low Battery text message will be sent to the designated mobile telephones if the average voltage falls to below 11 volts. When the battery voltage rises to 12.5V, the alarm condition will be cleared.
3.         Monitoring of Buoy Position
The position of the buoy is constantly monitored by a 12 channel GPS receiver.
If the buoy moves beyond an allowed limit an OFF STATION text message will be sent to the designated mobile telephones. The message will also keep giving the new Latitude and Longitude position of the drifted buoy.
The Position Monitor includes a delay of approximately 15 Minutes.
4.         Monitoring of Buoy Collision
The buoys are fitted with a shock sensor. When a buoy is hit by a passing vassal a Buoy collision text message will be sent to all the designated mobile telephones.
The Collision monitor can be disabled by sending a COL=OFF text message and the same will be confirmed.
5.         Monitoring of GPS
The output of the GPS receiver is constantly monitored. If the receiver fails, a GPS FAILED text message will be sent to the designated mobile telephones.
It is possible to reset the GPS receiver by sending a GPS=Reset command text message.
The buoy will respond with a GPS Reset text message.
6.         Synchronising of Buoys and Shore Lights.
The navigation Light characters can be synchronised by timing signals extracted from the output of the GPS receiver.
If the GPS receiver signal fails, the light will continue to operate but will not be synchronised. Also GPS fail signal will be sent to the designated mobile telephones.
7.         Status Report via Command Message
The status of the buoys and shore lights can be verified by sending a REPORT text message any time. When the command message is sent during daylight the light will be energized for a second. If the light did not switch on, the reply will show “Light fail”