Before summer started, I had no idea that checking field temperatures would be such a big task. I managed this by carrying around a portable thermohygrometer, writing down the readings, checking the weather app, and reporting the break times back to the foreman. On days when work at heights took place, wind speeds had to be checked separately, so it was not easy to organize heat wave and strong wind information all at once.
Then I learned about Ace Development’s smart temperature sensor. At first, I thought it was just an electronic sign that showed numbers in large numbers, but during consultation, I learned that it is a system that measures on-site temperature and humidity, links weather information, saves on the server, confirms administrators, and provides information on the electronic sign. If necessary, anemometers and warning lights can also be linked, so we thought it would be a good fit for places like our site where outdoor work and work at heights are carried out together.
The most inconvenient thing before introduction was the gap in records.
In the existing method, measurement intervals would widen while the person in charge was away or performing other safety inspections. When the perceived temperature rises rapidly in the middle of the day, the situation on site changed even while the numbers were being checked and delivered. From the workers' perspective, it was difficult to immediately know what stage they were in, and from the managers' perspective, they had to re-assemble the data later to determine when and what actions were taken.
Heat wave management does not end with simply informing you that it is hot today. In accordance with the revised rules on occupational safety and health standards that came into effect on July 17, 2025, necessary health measures are required for heat wave work that involves working for more than 2 hours in a place with a perceived temperature of 31 degrees or higher. In particular, in heatwave work with a perceived temperature of 33 degrees or higher, there is a standard for a break of 20 minutes or more within every 2 hours, making it more important to check and record on-site temperature and humidity.
The process of selecting the model that fits our site was also important.
Ace Development's SENSO T series is divided into configurations from T1 to T5 according to site size and display method. The options were different depending on whether to check basic figures in a small break area, use a smart electronic display board in the main workplace, or connect it to a large electronic display board at the entrance to the business.
We prioritized a configuration that would allow the perceived temperature and corresponding text to be clearly visible in locations where many workers come and go. It was easier to compare models because the site size, installation location, power source, LTE communication status, and whether anemometer linkage was necessary were first summarized and communicated. I felt that it was right to choose based on who would actually see it and where, rather than a product with a lot of features.
Morning safety meetings have changed since installation
Previously, weather and predicted maximum temperatures were communicated verbally during TBM time. Now, the flow has changed to explaining today's rest plan and attention tasks while looking at the current perceived temperature and action tips displayed on the electronic display board. After looking at the numbers directly, it became easier for workers to understand why break times were adjusted.
It was also convenient to be able to check on the PC at the office and view the mobile screen while on the move. You can check the current figures and changes without having to go to the center of the site every time, and because the data is saved, you do not have to rely on memory when writing the daily safety report. Although automation does not replace the judgment of safety managers, it clearly plays a role in helping ensure that information necessary for judgment is not missed.
Viewing wind speed information makes job decisions faster.
Wind is as important as heat in outdoor sites.In particular, work that is sensitive to changes in wind speed, such as tower cranes, steel frames, curtain walls, and scaffolding, requires constant monitoring of actual field measurements. Ace Development's smart wind vane can transmit wind speed and direction data wirelessly and store it on a server, and can also be considered for connection with the perceived temperature management system.
What we liked was that there was no need to operate heat wave equipment and wind speed equipment completely separately. By checking perceived temperature and wind speed within the same safety management flow, there are fewer screens to check when making morning work plans or when the weather changes suddenly. It was also helpful in practice that the person in charge of work at heights and the safety manager could talk based on the same data.
The most satisfying part was worker guidance and data storage.
The first thing was visibility. By displaying the perceived temperature and action tips on an electronic display, the burden of repeated verbal guidance was reduced. The second is records. With time-specific data remaining, it was easy to check the times when the heat wave was severe and the response flow at the site. The third is scalability. Depending on site conditions, you can consider linking anemometers, warning lights, and external electronic signs, so you are not limited to the initially installed configuration.
However, heat wave response does not end with the installation of equipment. Sensors must be installed to reflect the actual place where workers work, communication status and measurement values must be checked regularly, and water, shade, rest, cooling equipment, and emergency response systems must be operated together. We continue to emphasize the principle that the equipment provides the basis for management and the final action is carried out by people.
What I would like to say to sites considering the introduction of
Before consulting, rather than just informing them of the size of the site and the installation location, we recommend that you organize the number of people working per day, the main work sections, the route through which workers view the electronic sign, the presence or absence of an existing safety electronic sign, and whether an anemometer is needed.Even if it is the same temperature sensor, the selection criteria for equipment to be placed in the break room and equipment to be announced to all workers at the entrance to the workplace are different.
Using Ace Development's smart thermometer meant not measuring the temperature one more time, but making measurement, recording, notification, and on-site guidance into one routine. If you want to operate the site based on data rather than relying solely on the experience of the person in charge every season with repeated heat waves and strong winds, I think this is a system worth considering.
Frequently Asked Questions
Will installing just a wind chill gauge satisfy all legal requirements?
No. The equipment is a means to help check and record perceived temperature, and necessary health measures such as rest, air conditioning/ventilation, shade, water, education, and first aid measures must be implemented at the site at the site.
Can it be used in small sites?
Ace Development is releasing a lineup according to size and purpose from T1 to T5. Based on the installation location and required display and communication functions, we can provide consultation from small field configurations to large electronic signboard configurations.
Reference materials: Ace Development Smart Feeling Thermometer · Ace Development Smart Wind Speed Wind Vane Information · Ministry of Employment and Labor Information on Heat Wave Work Health Measures
Source: Ace Development , Ace Development Blog , Ace Development Naver Blog , Web Support Center Blog , Web Support Center Naver Blog
#Ace Development #Smart sensible thermometer #Construction site heat wave response #Heat-related illness prevention #Perceived temperature management #Smart wind vane #Construction site safety management #TBM safety training #IoT safety management #SENSOT series #On-site electronic sign #Heat wave work
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