We propose a system to manage electric craft tool usage and monitor of leaving in use. When a user uses tool, the system performs authentication process. Therefore, only authorized user can use tool. When the system recognizes leaving in use, automatically turns off the power of tool. All usage history and information of leaving in use will be recorded. And, that user’s usage authority will be removed automatically. We used a soldering iron as a power tool in this study.
When user starts using tool, they use ID card to authenticate. A power supply for tool is controlled by a solid-state relay. Attach a photoreflector to the iron stand to recognize state of the soldering iron. Leaving in use is state that soldering iron continues to be placed on an iron stand or taken out of it. If leaving in use occurs, tool will be automatically turned off. This will prevent occurrence accidents and injuries from occurring.
We checked to see if the system could manage the use of tools. Only authorized users were able to use tools and usage history was recorded. It could correctly detect the tool being left on and automatically turn off the tool. It could also record information on being left unattended and remove the user’s usage authority. Subsequently, we asked actual users to use this system. They could use it correctly. However, this system was not recognized when one user was replaced by another user while the tool in use. However, the system was able to detect the tool being left unattended regardless of the user.
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