US Patent No. 10,365,127

DATA LOGGING DEVICE


Patent No. 10,365,127
Issue Date July 30, 2019
Title Data Logging Device
Inventorship Maulin Dahyabhai Patel, Tuckahoe, NY (US)
Vikrant Suhas Vaze, White Plains, NY (US)
Saeed Reza Bagheri, Croton on Hudson, NY (US)
Assignee SIGNIFY HOLDING B.V., Eindhoven (NL)

Claim of US Patent No. 10,365,127

1. A portable system for logging sensor data and creating energy consumption patterns in an area comprising:a low-power and/or low accuracy clock; and
a processor in communication with a memory, the processor;
receiving data items from each of a plurality of sensors;
associating a time stamp generated by the low-power and/or low accuracy clock with each data item received from each of the plurality of sensors;
storing the received data items for a predetermined period of time; and
processing the stored data items to determine a high accuracy clock time stamp for each of the stored data items, wherein determining said high accuracy clock time stamp comprises:
determining a time usage pattern of the area during a period of receiving the data items;
approximating a correction of the time-stamp associated with the low-power and/or low accuracy clock based on the time usage pattern;
determining an occupancy pattern during a period of receiving the data items;
refining the correction based on the occupancy pattern associated with a second known time usage pattern; and
applying the correction to the time-stamp associated with the low-power and/or low accuracy of the stored data.