System for Proximity-Based Notification of Personnel Within Geographical Spaces

A system for determining worker location within a geographical area and to deliver an alarm, the system comprising:

• one or more alarm devices (ADs) having:
• an AD processor, local data storage and transceiver configured to connect to a wide area network (WAN) to send and receive AD data to a central computer system (CCS);
• a global navigation satellite system (GNSS) receiver configured to the AD processor and to receive GNSS signals, determine AD geographic position and report AD geographic position to the CCS;
• the AD processor configured to receive alarm data from the CCS and deliver an alarm;
• the CCS having:
• a CCS processor configured to:
• store one or more pre-defined alarm boundaries for a hazard risk;
• receive AD geographic positions from one or more ADs as determined by the GNSS receiver of each AD;
• receive alert data from one or more ADs and based on the location of an AD and the pre-determined alarm boundary for the hazard risk, determine if an AD is inside or outside the pre-determined alarm boundary for the hazard risk;
• and,
• deliver an alarm to an AD within the pre-determined alarm boundary.