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2020.09 – 2021.06

Intelligent Classroom Attendance System

STAR project narrative

Situation

Traditional manual attendance in classroom settings was time-consuming and error-prone, with no automated hardware-level solution available at low cost.

Task

Architect a low-cost, highly reliable multi-sensor fusion system to fully automate classroom attendance tracking.

Action

Architected a multi-sensor pipeline integrating an AS608 optical fingerprint module, a pyroelectric infrared (PIR) presence sensor, and a DS18B20 digital temperature sensor; authored modular C/C++ firmware to maximize reusability and portability, significantly reducing BOM cost and system complexity.

Result

The project resulted in a granted utility model patent, with the candidate listed as the second inventor.

Core skills and stack

C/C++MCUHW Driver Dev.Sensor Fusion

Interview focus

  • Hardware component selection, BOM cost optimization, and modular system architecture design
  • Second inventor on the granted utility model patent