Title :
A wireless portable SOS device based on all-digital-phase-locked-loop
Author :
Xue-Jiao Zhang ; Ke-Ji Cui ; Zhuo Zou ; Li-Rong Zheng
Author_Institution :
Sch. of Inf. Sci. & Technol., Fudan Univ., Shanghai, China
Abstract :
In this paper, we present a portable SOS device with wireless communication. This device is based on all-digital-phase-locked-loop (ADPLL). A wake-up mode is implemented for low power consumption. With extra biological sensors attached to the users, the device is awakened by abnormal signals and actively sends a SOS signal for help. Moreover, it can use those sensors to collect information from users. This information can be modulated to RF frequency and sent out along with the SOS signal. The SOS device also can be used in passive mode with a SOS button in some emergency situations.
Keywords :
digital phase locked loops; radio networks; ADPLL; all digital phase locked-loop; biological sensors; low power consumption; portable SOS device; wake up mode; wireless communication; wireless portable SOS device; Modulation; Phase noise; Radio transmitters; Robots; Sensors; System-on-chip;
Conference_Titel :
Consumer Electronics - Taiwan (ICCE-TW), 2015 IEEE International Conference on
Conference_Location :
Taipei
DOI :
10.1109/ICCE-TW.2015.7216966
