SmartCap System bandwidth requirements

This article is about the original SmartCap hardware. For Life by SmartCap hardware, please go to Life by SmartCap


The SmartCap is a very low bandwidth system. It is designed to send a fatigue level and a small number of IDs and timestamps to the server every 30 seconds.


Bandwidth and Latency:

The SmartCap system in the vehicle initiates the connection and sends a message every 30 seconds.

The server will respond with a packet acknowledging receipt of the data. The SmartCap system in the vehicle waits up to 120 seconds for an ACK from the server.

There are two scenarios where the bandwidth usage goes up:

  1. Buffered data (vehicle to server): once connection re-established after comms outage the buffered data gets sent every 5 seconds instead of 30 seconds (70 kBps for 200 vehicles)
  2. Firmware upgrades (server to vehicles): 5 kbps per vehicle for about 20 minutes. That would be 1 Mbps for 20 min if all systems were to be upgraded at the same time

 The numbers above are estimates and may vary depending on usage.

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