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07/22/2020 HYU News > Academics

Title

Professor Lee Young-moon Creates an Application that Prevents Smartphones Shutting Down in Cold Weather

Presented at an academic conference of the highest authority in mobile systems

Global News Team

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http://www.hanyang.ac.kr/surl/UJZVB

Contents
Professor Lee Young-moon's team of professors from the department of Robotics at Hanyang University created a technology that prevents smartphones from turning off in cold weather, reported Hanyang Univerisity on the 15th. 

Older smartphones turn off in cold weather more frequently causing extreme inconvenience to the users. The solution to this problem has become a big interest in the mobile industry.


Professor Lee Young-moon
 
Initially, the system in smartphones minimizes the usage of electricity at high temperatures while maximizing electricity usage at low temperatures to prevent heating issues. However, at low temperatures, the internal resistance of the battery increases rapidly. This, along with an increase in electricity usage, causes the battery supply to drop quickly. This results in the smartphone turning off.

Professor Lee Young-moon's team from the department of Robotics created an application called Battery-Aware Power Management (BPM), together in collaboration with Professor Shin Kang-Gun of Michigan University in the United States, which solves this problem. The joint research team improved operational stability with a smartphone application by analyzing battery capacity and controlling the decrease in battery voltage in cold environments without the use of additional equipment. After various tests by the OEM, the joint research team found out that the battery availability increased by 38%, and the operating time improved by 30% at a temperature of minus 5 degrees Celcius. 

This research was supported by Hanyang University (Task name: Embedded System Battery and Power Management) and the American Science Foundation. The results of the study (Paper name: Causes and Fixes of Unexpected Phone Shutoffs) was published at ACM MobuSys 2020, the most prestigious academic conference in the field of mobile systems, and presented at on open online conference (https://www.youtube.com/watch?v=L1exSp00ZJg) last month. 

 
For more information, visit [[HYUwiki]]에서 자세히 보기 : hyu.wiki/스마트폰꺼짐방지앱


Global News Team
Global@hanyang.ac.kr
Translation by: Lee Hee-jin
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