| I&T Solution |
GPS Positioning Inside Tunnel
(REF: S-1196) |
| Trial Project |
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| Solution Feature |
- We recommend to use "Bluetooth Beacon on Tunnel Wall" solution because of its advantages on (i) Friendliness to Vehicle Owners & the Public; (ii) Ease of Deployment & Maintenance etc.
- Bluetooth Beacon is the only commercialized technology for tunnel indoor positioning; nowadays Bluetooth Beacon are deployed in more than 15 tunnels in different cities of the world.
- “GPS Repeater & GPS Simulator” appears to be the best solution by covering a tunnel continuously; but it actually only covers only very limited “Zones” inside the tunnel; "Bluetooth Beacon" cover significantly more zones.
- For Cross Harbour Tunnel with 1.9km length, ~100 beacons are needed if beacons are placed at both sides of the tunnel each at 40-meter spacing, resulting in 50 indoor position zones.
- To implement also speed measurement for vehicles like public buses, “Odometer Pulse Counter” or CAN-BUS data can be used to get real-time speed for buses; together with Beacon ID and Indoor Position, Over-speeding alert inside tunnel can be triggered.
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| Trial Application and Expected Outcome |
- We can select a tunnel and stick 10 Bluetooth Beacons for trial; as a result, a vehicle passing by can get indoor position for 5 zones when passing-by the trial area.
- We can make use of a GPS Tracker that comes with Odometer Pulse or CAN-BUS interface for getting speed, a “Over-speeding inside tunnel alert” could be triggered during trial.
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| Additional Solution Information |
DigiMobi Technology_EMSD_I&T Wish REF W-0403_GPS Positioning Inside Tunnel_9 Apr 2022.pdf
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| Info on I&T Solution Provider |
| Solution Provider | : | DigiMobi Technology Limited | | Address | : | Room 812, Block A, Hong Kong Industrial Centre,489-491 Castle Peak Road,Kowloon, Hong Kong. | | Contact Person | : | Terence Ma |
| Position | : | General Manager | | Tel | : | 23108831 | | Email | : |
terence.ma@digimobi.net | | Webpage | : | www.digimobi.net |
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