iLamp: A Sensor-Enhanced Lamp with Surface-Tracking Capability Based on Light Intensity

The iLamp1 system is a sensor-enhanced desk lamp with surface-tracking capability based on received light intensity. It consists of two components: lamp and bookmark. The bookmark is a ZigBee-enabled sensor node that can report its sensed light intensity to the lamp with a user-friendly interface and twoway communication capability. The lamp can use its LEDs to locate user's reading surface to which the bookmark is attached, move toward the surface, and further tune its luminous intensity to meet user's preference. We develop the geometrical model for surface tracking. iLamp demonstrates a new centimeter-level location-tracking system using light intensity alone without other extra media or devices.

• Type: Conference
• Year: 2009
• Where: PERCOM
• Authors: Lun-Wu Yeh, Che-Yen Lu, Yu-Hsuan Lin, Jia-Liang Liao, Yu-Chee Tseng, Chien Chen, Chih-Wei Yi
• Keywords: PERCOM 2009, Wireless Networks