US 12,141,639 B2
Power source-less sensor device
Joong Hyun Choi, Cheonan-si (KR)
Assigned to AMOSENSE CO., LTD, Cheonan-si (KR)
Appl. No. 18/043,153
Filed by AMOSENSE CO., LTD, Cheonan-si (KR)
PCT Filed Sep. 1, 2021, PCT No. PCT/KR2021/011758
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/050683, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10-2020-0112777 (KR), filed on Sep. 4, 2020.
Prior Publication US 2023/0316010 A1, Oct. 5, 2023
Int. Cl. G06K 7/00 (2006.01); H02J 50/10 (2016.01)
CPC G06K 7/0008 (2013.01) [H02J 50/10 (2016.02)] 6 Claims
OG exemplary drawing
 
1. A power source-less sensor device, comprising:
a sensor module which includes a sensing unit including at least one sensor and includes a communication unit configured to transmit information detected by the sensing unit to the outside;
a capacitor for periodically providing driving power to the sensor module so that the sensor module can be periodically driven; and
an NFC antenna module for generating an induced current to store electricity in the capacitor during NFC tagging,
wherein the sensor module includes a memory unit configured to store information detected by the sensing unit,
wherein the capacitor is electrically connected in parallel between the sensor module and the NFC antenna module,
wherein the capacitor stores electricity using the induced current generated from the NFC antenna module through an energy harvesting method during NFC tagging,
wherein the sensing unit periodically senses information using power provided from the capacitor, and
wherein the information stored in the memory unit is transmitted to an NFC reader through the NFC antenna module during NFC tagging.