Working of the SEAS
The electronic unit in the SEAS is connected to the shipboard alarm system and to the GPS. Also the electronic unit has the facility to feed in correct values of any system process. When the data is fed into the electronic unit, it compares the stored value with the observed value. If there is a change between the observed and stored value, then it activates the shipboard alarm system.
Along with activation of the alarm, it also sends instant e-mail to pre-designated e-mail address, for a person who is at shore. The e-mail has a standard format clearly stating the observed value of the system, actual set value and the change as a graph plotted against time.
Thus a person ashore, usually superintendent, gets this instant e-mail and he immediately enquires about the situation onboard. If the crew onboard does not take any action for any abnormality that has happened, then the superintendent can question and direct the crew to take corrective action and thus prevent further problems which arise due to human negligence. There is also free messaging option from the same display unit and control system so that the crew, after taking corrective action, can respond to the designated e-mail address.
The Status Conditioning Unit is designed to form an interface up to 12 separate inputs which can be grouped under as follows:
- Main Fire alarm systems
- Engine Room Fire alarm system
- Cargo Hold bilge level
- Engine room bilge level
- Water tight door status
- Fire door status
- Cargo tanks status
- Security Alert system
- Steering gear failure alarm
- Generator alarms and other machinery alarms
- Oil Pollution/overflow/spill onboard alarm
- Man overboard alarm.
The alarm monitoring and control system has some essential connection requirements. All input signals are of the on/off format or binary “0" or “1" format. The system must be connected to the shipboard GPS, so that for each and every alarm, the vessels position is mailed and recorded automatically. The unit communicates with the nearest satellite or via internet depending upon the availability and frequency. Thus these systems are really worth for shipboard purpose to ensure safety is predominant.