Systems, devices and methods for accurately tracking workers and assets

A method of tracking workers or assets in a location, comprising:

• identifying a location to be monitored, where an arrangement of structural components within the location to be monitored changes during a monitoring period, and where metes and bounds of the location to be monitored remain substantially constant over the monitoring period;
• uploading information regarding the metes and bounds of the location to be monitored;
• determining a number of Bluetooth beacons suitable to provide substantially full coverage for receiving activity signals generated from one or more monitoring devices located within the location to be monitored during the monitoring period, each of the one or more monitoring devices associated with a worker or an asset;
• positioning the Bluetooth beacons at corresponding fixed positions thereby providing a constructed network for monitoring the location, the Bluetooth beacons configured to provide the substantially full coverage for receiving activity signals generated from one or more monitoring devices located within the location to be monitored during the monitoring period;
• associating a worker or an asset with a monitoring device comprising a low energy Bluetooth transmitter, a battery, temperature sensor and an accelerometer, where the association with the worker or asset comprises at least one unique identifying feature that allows a signal transmitted by the monitoring device to be accurately associated with the worker or asset;
• and
• periodically transmitting an advertising signal from the Bluetooth beacons to each monitoring device within the constructed network over the monitoring period, where each monitoring device within the constructed network, independently, transmits an activity signal to the Bluetooth beacons during each signal transmission period associated with the advertising signal, thereby generating a plurality of activity signals associated with the worker or asset associated with that monitoring device, where the plurality of activity signals provides substantially accurate activity information about the worker or asset associated with that monitoring device within the constructed network during the monitoring period.