2023
Power Estimator
PowerEstimator is a lightweight power consumption and battery life estimation tool for IoT and embedded electronic devices. It is designed to help developers, hardware engineers, and product designers quickly model the expected current consumption of a device and estimate how long it can operate from a given battery or power source. The goal of the project is to make early-stage power budgeting simple, readable, and easy to adapt to real electronics designs.
The project models a device using three main concepts: Source, Load, and Device. A Source represents the available energy supply, such as a battery, with properties like capacity and voltage. A Load represents an electrical consumer in the system, for example a microcontroller, sensor, radio module, regulator, LED, or external peripheral. Each load can define current consumption in different operating states, such as active current during processing and sleep current during low-power operation. A Device combines the source and all loads, along with timing information such as cycle time and active operating time per day.
Internally, PowerEstimator uses a simple duty-cycle based calculation. Each load contributes a current-time consumption value based on its active and sleep durations. These values are summed across all loads to calculate the total consumption of the complete device over a defined cycle. The tool then relates this average consumption to the available battery capacity and returns an estimated endurance value. The implementation is written in C# using clear object-oriented classes, making the calculation logic easy to understand, extend, and integrate into other .NET-based engineering tools.
PowerEstimator is useful during the early design phase of battery-powered products, especially IoT nodes, wireless sensors, handheld devices, and low-power embedded systems. It can help answer questions such as: How long will this device run on a selected battery? Which component dominates the power budget? How much battery life is gained by reducing active time or sleep current? It is also useful for comparing design alternatives, validating low-power design assumptions, and documenting estimated battery performance before hardware prototypes are available.
The tool is intentionally simple and transparent. It does not aim to replace detailed lab measurements, but it provides a practical first-pass estimate that can guide design decisions before committing to hardware.