A modular smart smoke detector that alerts users when smoke is detected and wirelessly transmits its battery status.
When installing smart home systems, they are often monolithic and non-modular, making it challenging and costly to add new features, as this typically requires integrating an entirely separate system. The goal of this project is to develop a component for a modular smart home system that overcomes these limitations.
As part of the project, we developed a smoke detector that alerts the user whenever a smoke particle is detected. Once an hour, it wakes up and wirelessly transmits battery information to the user.
To achieve this, we designed and produced a PCB circuit (the electrical schematic was created using OrCad), analyzing and selecting suitable components that met the project’s requirements, including low energy consumption, minimal size, and cost-effectiveness.
The power supply consists of a 3000mAh rechargeable battery, with the option to power the device using an existing DC-DC converter. A signal is transmitted only when a smoke particle is detected.
The idle current is approximately 0.6mA, and the working current is around 14.8mA, which did not fully meet the original requirements. The final dimensions of the PCB are 4cm x 4cm.
