This study introduces the first working prototype of a server-independent smart exit sign system (SISES) and validates its communication reliability. A smart exit sign system (SES) is a new type of evacuation guidance system that changes the directions of exit signs toward safe paths. Thus far, only a handful of SESs have been proposed on a conceptual level and assumed that each sign node was controlled by a central server. They are, however, complex and expensive to install and vulnerable during a fire. To overcome these limitations, an SISES, which communicates over a wireless sensor network without a central server, was proposed. This study tests the communication reliability and speed of the SISES—the most critical factors for stable operation. The results show that the SISES can communicate reliably in various conditions and that it takes less than 4 s to update the entire system installed at a 3392 m2 building.
Bibliographical noteFunding Information:
This work was supported by Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 1711055546 , “Development of the Smart Field Platform for Planning and Managing Building Construction”) and“Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20174010201320 ).
© 2018 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Civil and Structural Engineering
- Building and Construction