IoT

• Technical Challenges

  • Scalability: The data size is small but there are a large number of data points.
  • Security
  • Network
    • Wireless distance
    • Packet loss
  • Power consumption
    • Battery-powered
    • Energy harvesting
    • Wireless power transfer

• Commonly used computers

  • MSP430
  • Arduino
  • Raspberry Pi (relatively high performance, high power consumption)

• The most power-consuming aspect during communication

  • Various standards exist (e.g. Bluetooth, Wi-Fi, NFC, ZigBee)
  • Power consumption, communication distance, and speed have a trade-off relationship
    • This is expressed by Shannon’s theorem.

• To reduce power consumption

  • Reduce the amount of data transmitted
    • Compress data using redundancy
    • However, if the compression process is too complex, it may consume computational power.
  • Increase sleep time
    • Establish rules in advance to minimize the waiting time for receiving data, etc.
  • Reduce communication distance

• Energy Harvesting

• Wireless Power Transfer (Source: Information Science Guru)