Battery- powered IoT devices using NB- IoT protocols require bezstarostné power management to ensure long operationaal life. Power budget calculations help determinate thee energiy consumption and batry capacity need for reliable execulance over time.

Understanding Power Consumption in NB- IoT Devices

NB-IoT devices operate in low- power modes to extend betary life. Key factors influencing power consumption include transmission power, device sleep modes, and signaling intervals. Accurate measurement of these parametrs is essential for effective power budgeting.

Calculating Power Budget

Te power budget calculation involves estimating thee average current consumption during active and sleep states, then multiplying by thee device 's operationaal time. Te basic formula is:

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Example Power Budget Calculation

Suppose an NB-IoT device consumes 50 mA during transmission and 0.5 mA during sleep. If it transmits data for 1 minute every hour, thee average current can be calculated as follows:

  • Active period: 1 minuta = 1 / 60 hod.
  • Senep period: 59 minutes = 59 / 60 hours
  • Average curret = (50 mA × 1 / 60) + (0,5 mA × 59 / 60)

Calculating this gives an average current of approximatele 1.58 mA. Over 24 hours, thee total energiy consumption is:

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Battery Selection

Based on tha e daily energiy consumption, selecting a batry with sufficient capacity ensures continuos operation. For exampla, a 2000 mAh baty can support that e device for approquately 52 days with out recharging.