US 9,813,850 B2
Asset tracking system having primary and secondary tracking devices
Brian Lee, Boston, MA (US); Jamshed Dubash, Shrewsbury, MA (US); Jahangir Nakra, Titusville, NJ (US); and Dadi Setiadi, Edina, MN (US)
Assigned to Senaya, Inc., Framingham, MA (US)
Filed by Senaya, Inc., Boston, MA (US)
Filed on Apr. 9, 2014, as Appl. No. 14/248,679.
Prior Publication US 2015/0296332 A1, Oct. 15, 2015
Int. Cl. H04W 4/02 (2009.01); G06K 7/10 (2006.01); G06K 19/07 (2006.01)
CPC H04W 4/02 (2013.01) [G06K 19/0723 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A wireless RF tracking system comprising:
a receiver;
a primary tracking device; and
at least one secondary tracking device;
the primary tracking device having a ZigBee and BLE communication module for short-range communication with the at least one secondary tracking device, a cellular communication module for long-range communication with the receiver, a GPS or GLONASS positioning element, and a first battery;
the at least one secondary tracking device having a ZigBee and BLE communication module for short-range communication with the primary tracking device but not with the receiver, no cellular communication module, a second battery, and no positioning element;
wherein power consumption of the primary tracking device is more than power consumption of the secondary tracking device.