Quick Answer
Calculate SmartCity IoT Sensor Node Battery Lifetime from Duty Cycle and Current Profile
Calculator
Result Interpretation
SmartCity IoT Sensor Node Battery Lifetime from Duty Cycle and Current Profile Calculator computes Battery Lifetime in s using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Duty Cycle = 0.1
- Idle Current = 0.0001
- Active Current = 0.02
- Supply Voltage = 3.3
- Battery Capacity = 2
- Quiescent Current = 1.0E-6
Expected Result:
- Battery Lifetime = 3443328.5509326
Engineering Interpretation:
Under the given input conditions, the calculated result is: Battery Lifetime = 3443328.5509326 s.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
battery lifetime = (battery capacity * 3600.0) / (duty cycle * active current + (1.0 - duty cycle) * idle current + quiescent current)Formula family: formula_smartcity_smartcity_iot_sensor_node_duty_cycle_vs_battery_lifetime_tradeoff_analyzer
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| duty_cycle | Duty Cycle | INPUT | Duty Cycle |
| active_current | Active Current | INPUT | Active Current |
| idle_current | Idle Current | INPUT | Idle Current |
| quiescent_current | Quiescent Current | INPUT | Quiescent Current |
| supply_voltage | Supply Voltage | INPUT | Supply Voltage |
| battery_capacity | Battery Capacity | INPUT | Battery Capacity |
| battery_lifetime | Battery Lifetime | OUTPUT | Battery Lifetime |
Calculation Steps
- Enter the duty cycle in 1.
- Enter the active current in A.
- Enter the idle current in A.
- Enter the quiescent current in A.
- Enter the supply voltage in V.
- Enter the battery capacity in Ah.
- Step 1: Compute battery lifetime.
- Read the battery lifetime (s) from the results.
Engineering Summary
Calculate SmartCity IoT Sensor Node Battery Lifetime from Duty Cycle and Current Profile
Frequently Asked Questions
What does this calculator calculate?
The SmartCity IoT Sensor Node Battery Lifetime from Duty Cycle and Current Profile Calculator estimates Battery Lifetime based on the input parameters you provide
Why is active current important in this calculation?
active current is inversely proportional to battery lifetime. When you enter active current in A, the calculator uses it in the engineering formula to compute the output
How should I interpret the result battery lifetime?
The calculator outputs battery lifetime in s. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Active Current (A), Idle Current (A), Quiescent Current (A), Supply Voltage (V), Battery Capacity (Ah). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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