Impairment detection with biological considerations

A device comprising:

• a housing configured to be attached to a worker;
• wherein the housing is a high visibility safety vest that is a component of personal protective equipment (PPE), which ensures that the wearer can be easily seen by other workers, oncoming vehicles and drivers of equipment;
• a processing unit disposed in the housing comprising a processor, a communication unit multiple movement sensors, and multiple biological sensors;
• wherein the multiple movement sensors and multiple biological sensors are located at a distance from each other and from the processor within the housing;
• wherein the housing includes a pocket that encloses the processor and communication unit, and wherein at least one of the multiple movement sensors and multiple biological sensors are located on a right side of the vest and at least one of the multiple movement sensors and the multiple biological sensors are located on a left side of the vest;
• wherein during a first time window, the multiple movement sensors measure a first movement signal related to movement of the worker and the multiple biological sensors measure a first biological signal of the worker, wherein the first time window occurs during a training activity comprising a series of prescribed movements performed by the worker, wherein the first movement signal and the first biological signal define normal behavior;
• wherein the processor stores at least one numerical descriptor derived from the first movement signal and at least one numerical descriptor derived from the first biological signal as reference data for the worker;
• wherein an activity label defining a type of movement of the worker is stored with the at least one numerical descriptor derived from the first movement signal and the at least one numerical descriptor derived from the first biological signal;
• wherein, during a second time window, the multiple movement sensors measure a second movement signal related to movement of the worker during the second time window and the multiple biological sensors measure a second biological signal of the worker;
• wherein a sampling rate during the second time window of the multiple movement sensors and the multiple biological sensors is the same and is dependent on the type of activity being detected, and the size of the second time window for the multiple movement sensors and the multiple biological sensors is set based on the sampling rate to ensure having enough samples;
• wherein the processor compares at least one numerical descriptor derived from the second movement signal and at least one numerical descriptor derived from the second biological signal to the reference data as a factor to identify an impairment indicator, which proactively identifies and mitigates potential safety situations;
• and
• wherein the communication unit enables communication of the processor with the multiple biological sensors and the multiple movement sensors.