In this project, we use Fairy Devices' proprietary smart wearable device "THINKLET®" with a business support web application developed by Daikin. The project involves accumulating the work videos captured by THINKLET® and analyzing them using AI models to improve on-site operations. We have been advancing this research and development for over a year.
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Hido: Yes, actually, I met Mr. Seki at a technology exchange event for startups focused on machine learning while I was at Preferred Infrastructure. Later, we co-authored a book during the data science boom in 2015. Now I feel quite fortunate that Daikin has given us a chance to reconnect and work together on the same team.
As Mr. Kondo mentioned in Part 1, our relationship with Fairy Devices began in 2018 when Daikin started collaborating with the University of Tokyo. The idea of launching THINKLET® emerged in 2019, and we began exploring how to develop a remote support service using this device. After much trial and error, we finally arrived at the current form in 2022. We envisioned using the accumulated videos to automate remote support with AI.
What Sets THINKLET® Apart from Conventional AR Wearable Computers?
――There are augmented reality wearable devices like Google Glass and Microsoft HoloLens. How does THINKLET® differ from these?
Seki: The main difference is that THINKLET® is a neck-mounted device rather than smart glasses or a head-mounted display (HMD) device. Using devices that are worn on the head in a real work environment can be cumbersome. A neck-mounted device is more comfortable and convenient for on-site use, allowing for hands-free operation. Additionally, head-mounted devices tend to cause image instability due to frequent head movement, but the neck-mounted design minimizes this issue, providing stable and less distracting visuals.
――How might THINKLET® change the world? Besides real-time remote support, what other applications could it have?
Seki: One potential application is utilizing recorded videos. It's important to consider that we live in a world in which information can be categorized into easily text-encoded (verbal) information and difficult-to-text-encode non-verbal information. Recently, it has become easier to extract and organize information from text using large language models (LLMs). However, much of the information and skills that are not text-encoded still exist on-site, and we need to capture that as well. For instance, video footage of hands-on tasks performed on-site and the conversations that occur during those tasks hold significant value.
Although there are still various challenges, we believe that having workers wear THINKLET® all day to accumulate data, detect important scenes, and build knowledge is a promising approach. The value lies in how we can utilize non-verbal information hidden in the video and use it as an interface. However, accumulating video data requires time and effort, and it's crucial to convey the significance of this accumulation to on-site workers.
As a first step, we plan to start with human-assisted remote support, then move on to partial task automation, and eventually provide insights through search and analysis of recorded videos. Daikin is already using remote support extensively and has accumulated thousands of hours of data. Our dream for the future is to achieve "multi-skilled workers" where beginners can perform any task using THINKLET® based on the accumulated data.
Application Examples Only Possible with Daikin: Its First-Person Video Analysis Leads Competitors
Hido: When I joined Daikin, the development of image analysis functions had just begun, and the accuracy was lacking, making it difficult to implement on-site. However, we are now at a stage where simple applications can be realized. If we had started this project five years ago, it would have been too early. The synergy between accumulating our own data and the progress of image recognition algorithms has brought us to the point where we can estimate what the worker is doing from first-person perspective footage. With the addition of generative AI technologies like ChatGPT, we now have the tools to enhance accuracy. First-person image analysis, which was previously an uncharted area, is becoming increasingly relevant.
Kataoka: Indeed. The failure rate of air conditioners is significantly affected by the quality of the installation work. Identifying and checking points prone to mistakes during installation and understanding the situation when repairs are needed help in assessing which parts that are likely to fail. In Japan, skill transfer is crucial, but this will also be useful in global expansion for ensuring the quality of workers. Recorded footage will impact the entire product lifecycle.
Hido: Even if AI learns from publicly available information on the internet, it's unlikely that a useful model for our air conditioner maintenance and repair can be created. Therefore, we need to train models specialized in Daikin's operations using data that we have collected ourselves. The large amount of data we have already accumulated is an advantage and a point of differentiation for Daikin. Although we need to further improve accuracy, objectively speaking, the technological foundation is there for us to quickly achieve greater accuracy, and we are currently ahead of other companies.
Seeking Talent to Develop Cutting-Edge AI Technology in a Ready GO Environment
Hido: That's certainly true. With the rise of first-person video analysis, we are considering releasing some of our video data to solicit and incorporate insights from the world's top researchers and solve problems through open innovation. It would be great if Daikin's initiatives became the global standard used across various industries. Since we do not compete in fields outside of air conditioning, there is potential for horizontal expansion with Fairy Devices in other areas.
Hido: Daikin is advancing with forward-looking and cutting-edge initiatives for the future. We have established the Daikin Information and Communication Technology University (DICT) within the company and are nurturing many IT personnel. Many of the young human resources in this project are graduates of the university and are actively contributing, but we still need more skilled engineers. We would be delighted to have people join Daikin and help us explore new fields together.
Kataoka: What we are working on now has significant societal impact for the future. On a direct level, the automation of report entries through video will reduce the workload at the site. Additionally, first-person video analysis of recorded footage can provide insights that workers may not have been aware of and help avoid near-miss situations that deviate from standard procedures, leading to enhanced safety and reliability. We welcome individuals who find such potential development appealing.
Seki: The data from Japan's manufacturing sites is unique to each manufacturer and ensures world-class quality. Analyzing and effectively utilizing this data for global expansion is one of the most exciting undertakings possible in Japan today. Daikin has already accumulated data ahead of others and has the capability to analyze and verify it on-site. We are looking forward to individuals who will take on challenging new tasks with Daikin and us at Fairy Devices. Please join us.
※The information and profiles are based on the time of the interview.
※1.Company Information
Company Name: Fairy Devices Inc.
Representative Director: Masato Fujino
Location: 7F Yushima Urban Building, 2-31-22 Yushima, Bunkyo-ku, Tokyo
Established: 2007
URL: Company Information
※2. Achieving innovation in field operations through collaboration between Fairy Devices Inc., a venture originating from the University of Tokyo, and Daikin Industries Connected Worker Initiative
※3. Awarded the "Minister of Internal Affairs and Communications Award" and "Minister of Education, Culture, Sports, Science and Technology Award" at the 5th Japan Open Innovation Awards sponsored by the Cabinet Office
Daikin's appeal and the thoughts of engineers are here↓↓
Executive Officer, CPO, Fairy Devices Inc.
Joined in April 2022. Originally from Toyama Prefecture.
Responsible for product development management, machine learning.
"I want to transform what couldn't be done yesterday into something achievable today, and advance the world with the power of technology."
Chief Engineer, Technology and Innovation Center
Joined in January 2023. Originally from Chiba Prefecture.
Responsible for image recognition technology, generative AI technology.
"I aim for Daikin to be recognized as a leader in digital transformation in manufacturing, delivering valuable products and services to customers."
Technology and Innovation Center
Joined in April 1991. Originally from Osaka Prefecture.
Responsible for planning and technical development of systems for air conditioner maintenance workers.
"I want to use new technologies and devices to provide applications and services that delight on-site workers."



