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Double-Door Control Logic Improvement


Aug. 29, 2025, 2:23 p.m.
Double-Door Control Logic Improvement

Field Details
Project Title Improvement of Temporary Door Opening/Closing Phenomenon in Double-Door Systems
Task Performed Analyzed the cause of double-door malfunction and modified the control logic.
Main Tasks & Achievements Main Tasks:
  • Reviewed double-door control logic and refactored related code
  • Analyzed newly added features implemented by overseas developers and assessed their impact
  • Reproduced malfunction to trace and fix the faulty code
  • Conducted stabilization tests and supported field responses

Main Achievements:
  • Resolved malfunction where double doors briefly opened and closed, then reopened after elevator reset
  • Fixed conflicts caused by new feature introduction, enhancing global firmware stability
  • Reduced customer claims from 3 cases per month to 0
  • Shared inspection guidelines for similar patterns with other systems, improving overall product quality
Role Firmware Developer
Tech Stack
  • Language: C++
  • Tool: Visual Studio 2012
  • Version Control Tools: Atlassian (Bitbucket, Jira, Confluence)
Research Period July 2021 – September 2021
Affiliated Institution Otis Elevator