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Kolon Benit of South Korea Leads Public Security toward Innovation and Intelligence by Introducing Advantech's Solution featuring LoRa

4/28/2020

The development and application of IoT technology has enabled intelligence in the field of public security. With sensors and wireless communication, the government or related operators can now remotely monitor the health status of buildings and public facilities, to prevent dangerous/hazardous conditions. Kolon Benit, a system integrator in South Korea, has basically initiated, developed and implemented the much talked about predictive maintenance.

Intelligent bridge monitoring minimizes risks to the public

A bridge structure will be affected by the following factors, drastic temperature changes and natural disasters such as earthquakes, rainstorms, and typhoons. The potential impact on a bridge structure could result in catastrophic accidents due to structural failures or even the collapse of the bridge. So, regular monitoring of the health of bridges is crucial.

In the past, the Seoul Facilities Corporation would entrust engineers to measure and record any structural issues. But human negligence and difficulty in correctly analyzing issues, compounded by the non-existence of real-time data, is another determining factor in bridge safety.

The company appointed Kolon Benit to build a set of intelligent facility security management systems, which featured LoRa wireless sensors in the bridge facilities to collect and upload data to the cloud platform 24 hours a day. The Seoul facility company can then analyze changes in each sensor’s data in real time, which not only reduces the site workload of engineers and maintenance costs, but could also combine with external environmental information to establish a prediction model that achieves the goal of real-time risk prevention and management, thus ensuring safety of the bridge.

Advantech private LoRa solution meets the dual requirements of data security and transmission quality

In this system, Kolon Benit chose Advantech's private LoRa network solution and Arm Pelion. The platform includes IoT connectivity technology, device management, and data management, which is equipped with the key function of remote device monitoring, which can improve management efficiency and reduce operational costs. The Advantech Private LoRa solution provides the WISE-LoRa development platform, which includes a WISE-LoRa gateway, WISE-3610, and WISE-LoRa Node with sensors (WISE-1510 Private LoRa M2.COM module), but also offers software and hardware integration services; one for the integration of ARM Mbed sensor, the other for the integration of two different cloud platforms—ARM Pelion and Advantech's own cloud WISE-PaaS / Device-on.

Because Advantech's Private LoRa solution has inherited the advantages of traditional LoRa technology; low power consumption, large transmission range, and high stability, its data transmission distance can be more than 10km. Each gateway can support up to 500 nodes, each of which can use LoRa for data transmission. At the same time, it also combines SPS and AES-128 encryption technology to reduce the risk of data loss and ensure data security. This was an issue for LoRaWAN in the past, but that has now been addressed.

Inspection of concrete setting provides better surfaces for the public

In addition to bridge monitoring, Kolon Benit also applied the same IoT system to provide real-time concrete maintenance monitoring services to ensure the quality of concrete after curing. There is a very important step called "curing" between the process of pouring to the complete setting of concrete. During curing, the concrete is kept wet all the time to avoid cracking after hardening due to the rapid evaporation of surface moisture, so as to improve the strength of concrete after hardening. In the process of curing, temperature is the most important factor. Water evaporates faster in a relatively warm environment, and the curing time of concrete will be shorter.

In the past, the operators at the construction site will measure and record the temperature regularly, and then by spraying water, burning charcoal and other methods to maintain the curing quality of concrete. However, this manual management could not react sufficiently to the temperature changes. Kolon Benit introduced a temperature sensor to measure the temperature during curing, which then uploads the data to the cloud platform in real time through LoRa. The system then monitors the temperature changes to ensure the quality of concrete curing and reduces the risk of cracks after solidification.

For operators in the construction industry, the concrete maintenance monitoring system not only improved the reliability and quality of concrete production, but also reduced unnecessary personnel, thus effectively reducing overall construction costs. IoT technology has clearly shown that it can significantly improve the quality of bridge structural safety and industrial concrete setting, so Kolon Benit will continue to develop its construction applications in the future, hoping to improve public safety in South Korea well into the future using innovation and intelligence.