Mesemar

MRAS

ASTRONOMICAL CLOCK

The MRAS is a twilight detection device equipped with two photodiodes and a GPS module for detecting light levels. It is designed to be compatible with most maritime marking systems and can be customized upon request to adapt to any system. The MRAS provides triple nightdetection capability, enhancing the system’s reliability and safety.

The MRAS offers two methods for night-state detection: photodiodes and a GPS module. Primary detection is performed through the photodiodes; when one detects the configured light level, the system switches to night mode. If the photodiodes fail, the system switches to night mode based on the GPS time.

The MRAS automatically detects its geographical position and uses this information to calculate daily sunrise and sunset times. If photodiodes fail to detect a state transition, the GPS system executes the change, ensuring increased system reliability and safety.

Technical Specifications

Triple night-state detection
12-channel GPS module
Relay contact for night activation
Synchronization output
RS485 output for GPS data frame acquisition
Status LEDs for operation check

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