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To create a safer warehouse environment for its employees, DHL Supply Chain, recently completed a pilot project at the DHL Advanced Regional Center in Singapore using Internet of Things (IoT) technology.
According to a media release, data from wearable wireless sensors were used to prevent accidents by monitoring employee fatigue levels, suggesting rest periods, and sending alerts when people were in close proximity to moving equipment – all in real time.
With the regular movement of forklifts, belts and other materials
handling equipment (MHE) in warehouse operations, incidents involving
MHE consistently rank among the top safety-related incidents that occur in DHL warehouses every day.
By providing alerts to equipment operators, the IoT solution
in the Singapore pilot helps identify hazardous situations before they
happen through three steps:
The wearable sensors and data transmitters track employee
movement around the warehouse, displaying the distance and number of
people in a given work area.
The solution scans for signals from employees via a wearable
tag, and when this signal is close to a forklift, the driver is
informed that someone is close to his or her work area.
An audio notification, alongside a vibration alert, is sent to a tag worn on the driver’s wrist, so that the warning is noticed even in noisy surroundings.
Additionally, the wrist sensor measures symptoms of fatigue throughout the day by measuring the operator’s heart rate – a drop
in heart rate indicates tiredness and potential lack of concentration.
Supervisors will be automatically notified when an operator’s heart
rate falls below normal levels with a recommendation of a break.
The solution also generates heat maps that indicate busy and high-risk areas, allowing supervisors to evaluate particularly busy areas and review traffic flows to take measures to mitigate the situation.
“At DHL, safety is our number one priority and there is a strong
commitment to the health and safety of our employees at all levels of
the organisation. So when we were exploring the use of wearable sensors
and how we can leverage the technology for our operations, we naturally
chose to focus this pilot project around warehouse safety,” said Steve
Walker, chief information officer Asia Pacific and global warehouse
management system centre of excellence, DHL Supply Chain.
DHL noted that the IoT solution can be easily adapted to various
industry scenarios, such as truck driver fatigue; slips, trips and
falls; repetitive task fatigue and cold chain temperature exposure. The
solution can also send location information and alert supervisors or health and safety offices when the worker is in danger or presses a panic button for assistance.
“We have learned a huge amount about IoT from this pilot project,” says Walker. “Now we are evaluating
how we can roll out this solution in Asia Pacific and leverage it to
add further value for our customers and the business.”
Employee completing a safety and fatigue checklist at the beginning of a shift. Credit: DHL
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