Founded in September 2020,the International SparkLink Alliance(iSLA)now has approximately 1,200 members in diverse sectors including terminals,homes,vehicles,manufacturing,transportation,finance and healthcare.The iSL...Founded in September 2020,the International SparkLink Alliance(iSLA)now has approximately 1,200 members in diverse sectors including terminals,homes,vehicles,manufacturing,transportation,finance and healthcare.The iSLA has established a technical standards system for wireless short-range communication covering full-stack standards such as the end-to-end protocol system.展开更多
Users, especially the non-expert users, commonly experience problems when connecting multiple devices with interoperability. While studies on multiple device connections are mostly concentrated on spontaneous device a...Users, especially the non-expert users, commonly experience problems when connecting multiple devices with interoperability. While studies on multiple device connections are mostly concentrated on spontaneous device association techniques with a focus on security aspects, the research on user interaction for device connection is still limited. More research into understanding people is needed for designers to devise usable techniques. This research applies the Research-through-Design method and studies the non-expert users＇ interactions in establishing wireless connections between devices. The ＂Learning from Examples＂ concept is adopted to develop a study focus line by learning from the expert users＇ interaction with devices. This focus line is then used for guiding researchers to explore the non-expert users＇ difficulties at each stage of the focus line. Finally, the Research-through-Design approach is used to understand the users＇ difficulties, gain insights to design problems and suggest usable solutions. When connecting a device, the user is required to manage not only the device＇s functionality but also the interaction between devices. Based on learning from failures, an important insight is found that the existing design approach to improve single-device interaction issues, such as improvements to graphical user interfaces or computer guidance, cannot help users to handle problems between multiple devices. This study finally proposes a desirable user-device interaction in which images of two devices function together with a system image to provide the user with feedback on the status of the connection, which allows them to infer any required actions.展开更多
Conventional battery management system suffers from the heavy copper harness for connection and transformation withinthe battery pack, and has difficulties on achieving light-weight and safety. In this article, an adv...Conventional battery management system suffers from the heavy copper harness for connection and transformation withinthe battery pack, and has difficulties on achieving light-weight and safety. In this article, an advanced wireless battery managementsystem is proposed for vehicular application, and detailed systematical designs for hardware and software are presentedfrom industrialization. The high ability of computing for the main controlling chip and low-cost wireless connectionchip for hardware are highlighted for achieving long-time operation on the battery pack. The layered software architectureis developed for assembling application software, where further algorithms including state of health estimation or powercontrolling can be easily deployed on boards without revision of current software. Moreover, the main online state of chargeestimation algorithm is introduced. The results confirm that the designed master–slave wBMS boards can meet the vehicularrequirements, and the maximum error of state estimation can be limited within 3%. The proposed wireless battery managementsystem is confirmed for online application for electric vehicles and energy storage systems, and the future promotionis discussed based on other energy storage systems such as multiple packs on commercial vehicles or power stations.展开更多
Imagine a world where lightning-fast,reliable wireless connectivity is available everywhere,from the most remote mountain village to the busiest city center.That vision is inching closer to reality thanks to a landmar...Imagine a world where lightning-fast,reliable wireless connectivity is available everywhere,from the most remote mountain village to the busiest city center.That vision is inching closer to reality thanks to a landmark breakthrough by Chinese scientists,who have developed a next-generation chip that could lay the groundwork for 6G communication networks(Figure 1).展开更多
文摘Founded in September 2020,the International SparkLink Alliance(iSLA)now has approximately 1,200 members in diverse sectors including terminals,homes,vehicles,manufacturing,transportation,finance and healthcare.The iSLA has established a technical standards system for wireless short-range communication covering full-stack standards such as the end-to-end protocol system.
文摘Users, especially the non-expert users, commonly experience problems when connecting multiple devices with interoperability. While studies on multiple device connections are mostly concentrated on spontaneous device association techniques with a focus on security aspects, the research on user interaction for device connection is still limited. More research into understanding people is needed for designers to devise usable techniques. This research applies the Research-through-Design method and studies the non-expert users＇ interactions in establishing wireless connections between devices. The ＂Learning from Examples＂ concept is adopted to develop a study focus line by learning from the expert users＇ interaction with devices. This focus line is then used for guiding researchers to explore the non-expert users＇ difficulties at each stage of the focus line. Finally, the Research-through-Design approach is used to understand the users＇ difficulties, gain insights to design problems and suggest usable solutions. When connecting a device, the user is required to manage not only the device＇s functionality but also the interaction between devices. Based on learning from failures, an important insight is found that the existing design approach to improve single-device interaction issues, such as improvements to graphical user interfaces or computer guidance, cannot help users to handle problems between multiple devices. This study finally proposes a desirable user-device interaction in which images of two devices function together with a system image to provide the user with feedback on the status of the connection, which allows them to infer any required actions.
基金supported by the National Key Research and Development Program of China(2021YFB2501500)Battery Integration and Management Technology Challenge host by SAE-China and Tesla.
文摘Conventional battery management system suffers from the heavy copper harness for connection and transformation withinthe battery pack, and has difficulties on achieving light-weight and safety. In this article, an advanced wireless battery managementsystem is proposed for vehicular application, and detailed systematical designs for hardware and software are presentedfrom industrialization. The high ability of computing for the main controlling chip and low-cost wireless connectionchip for hardware are highlighted for achieving long-time operation on the battery pack. The layered software architectureis developed for assembling application software, where further algorithms including state of health estimation or powercontrolling can be easily deployed on boards without revision of current software. Moreover, the main online state of chargeestimation algorithm is introduced. The results confirm that the designed master–slave wBMS boards can meet the vehicularrequirements, and the maximum error of state estimation can be limited within 3%. The proposed wireless battery managementsystem is confirmed for online application for electric vehicles and energy storage systems, and the future promotionis discussed based on other energy storage systems such as multiple packs on commercial vehicles or power stations.
文摘Imagine a world where lightning-fast,reliable wireless connectivity is available everywhere,from the most remote mountain village to the busiest city center.That vision is inching closer to reality thanks to a landmark breakthrough by Chinese scientists,who have developed a next-generation chip that could lay the groundwork for 6G communication networks(Figure 1).
