Overview
Paris Metro wished to enhance the protection of lots of of building employees in tunnels with Litum, whereas increasing its underground rail line. Litum’s lone worker security resolution that accompanied the development mission consisted of UWB RFID-based sensors worn by personnel, and their location information was collected by a mesh community arrange within the tunnel for emergency reporting.
Goal
A system that will guarantee employee security all through the multi-year mission.
Expertise
Supported by Litum propriatery software program, battery operated UWB RFID tags, anchors, gateways are put in within the building space
Integration
Built-in with the corporate’s time and attendance system for headcount accuracy.
The Firm
The mission commenced in 2017 and was overseen by public enterprise Société du Grand Paris. It consists of a number of new rapid-transit traces within the Paris area. The newest rail line includes 5 stretches of tunnel, totaling 33 kilometers (20 miles) and requires roughly 400 employees. A tunnel boring machine (TBM) is used to drill out the tunnel.
The enterprise drawback
The mission needed to meet strict security laws permitting solely licensed employees in restricted areas. Additionally employees have been tracked real-time to keep away from unsafe behaviours.
The Options
The mission needed to meet strict security laws permitting solely authorised employees in restricted areas. Additionally employees have been tracked real-time to keep away from unsafe behaviours. All employees have been supplied with tags and anchors that talk with the badges have been put in througout the tunnel. Every employee is assigned an ID badge that’s connected to that particular person’s hardhat when reporting to the job website.
The distinctive ID quantity transmitted by the battery- powered badge is linked to the worker ID and job title in Litum IoT software program. The system forwards every tag ID and its location by way of the mesh community construction.
The exact location of tags is calculated by Litum location engine software program through the use of proprietary algorithms. Thus, as every employee strikes across the worksite and thru the tunnel, the situation data is displayed on a dashboard map as a dot in actual time.
Within the occasion of an incident, akin to an unauthorized particular person getting into a restricted space, an alert is issued on to managers or supervisors onsite, who can then rapidly tackle the issue.
For emergencies, the system prompts every worker’s badge to vibrate and make an audible warning, and the software program can show every employee’s location on a mounted display screen to point evacuation routes.
Challenges
The primary problem was to create a community inside underground tunnels the place working atmosphere is harsh and normally very unpredictable.
Amplifiers have been used to boost bandwidth inside tunnels.
IP67 rated {hardware} most well-liked to fulfill the calls for of the cruel working atmosphere.
All through the tunnel, RTLS UWB nodes have been put in each 100 meters as a precaution for every other emergencies in order that employees might activate the alarm system.
