Smartphone-Based Data Collection System for Repetitive Concrete Temperature Monitoring in High-Rise Building Construction

Abstract

The systematic collection and management of on-site information in high-rise building construction are important factors in construction management. Recently, wireless sensor network (WSN) technology has been utilized to manage the various tasks involved in high-rise construction efficiently and in a timely manner. However, because of the repeated installation of sensors and repeaters along with the construction progress, the existing WSN technology is ineffective when applied to the temperature management of concrete in structural work. Here, we propose a new data collection method in which a worker uses a smartphone to repeatedly monitor concrete temperature. In field implementation, the proposed system enables concrete temperature management without a transmission gap for monitoring in 60-min intervals with smartphones provided to 20% of the structural workers. Next, a case study was performed on a high-rise building construction site to analyze the effectiveness of the proposed system in terms of cost savings by avoiding schedule delay. The results of the case study show that the proposed system can reduce the additional work costs resulting from delays in concrete curing and save up to $18,907 in labor costs. In addition, this system can reduce the temperature management time of the quality manager and enable more efficient management. It is also expected that this system will contribute to on-site waste management by reducing the number of embedded sensors.

Framework for Sustainable Wireless Sensor Network Based Environmental Monitoring

“…In terms of results, the authors demonstrated the µPanel efficiency in supporting easy and fast deployment of complex monitoring systems. They affirm that their compact transmission scheme at the smart-phones as well as the push notifications support are the main concepts reinforcing real time clients as similar to the smartphone-based monitoring in [5].…”

“…These devices are requested to acquire environmental stimuli, including humidity, temperature, light, and vibrations. The sensor nodes are designed for sensing events, communicating data, and aggregating and processing packets in a central location named sink node [5]. Due to these characteristics, the WSNs are used in various fields such as health care, industry, environmental monitoring, and research and development [19].…”

“…A sensor node is a wireless device responsible for detecting events from its environment and then communicating them to the sink node [5]. The sensor may be used in some cases as forwarder; aggregating data from multiple sensor nodes, removing redundancy and communicating the data to the next hop [6].…”

A Roadmap for Applying Digital Technology to Improve the Efficiency of Construction Supervision in Building Projects: Focusing on Korean Cases

“…Third, digital technologies that can be used in construction supervision were investigated through analysis of policy reports and previous research, and the technologies that could be used in reclassified works were selected by reflecting the review opinions of experts who performed FGI. Detailed information on the analysis targets for deriving applicable digital technologies is as follows: (1) policy reports are the most recently released by the MOLIT, the ministry that oversees Korea's construction industry, taking into account the characteristics that they include digital technologies that have been reviewed by the ministry from the past to the present; and (2) previous researches consist of articles presenting digital technologies that can be used in the construction industry and future strategy reports published by various organizations [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]37,[39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Among them, research that presented overlapping technologies was excluded, and the final analysis targets were selected.…”

“…In previous studies, government reports, and future strategy reports, digital technologies applicable to the construction industry have been presented in various categories, such as fully automated construction systems, AI, and BIM [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]37,[39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Among various references, this study set eight references as the analysis target, excluding those that presented overlapping digital technologies [6,14,[25][26][27][28]48,50].…”