US 12,277,817 B2
Safety systems for objects and methods
Raúl Delgado Acarreta, Saragossa (ES); José Cuesta Álvarez, Saragossa (ES); and Daniel Vicente Dueñas, Saragossa (ES)
Assigned to RADE TECNOLOGÍAS S.L., Saragossa (ES)
Filed by RADE TECNOLOGÍAS S.L., Saragossa (ES)
Filed on Dec. 19, 2022, as Appl. No. 18/083,837.
Claims priority of application No. 21383158 (EP), filed on Dec. 17, 2021.
Prior Publication US 2023/0196856 A1, Jun. 22, 2023
Int. Cl. G07C 9/00 (2020.01); F41A 17/06 (2006.01); F41C 33/02 (2006.01); G01D 5/24 (2006.01)
CPC G07C 9/00182 (2013.01) [F41A 17/063 (2013.01); F41C 33/029 (2013.01); G01D 5/2405 (2013.01); G07C 2009/0019 (2013.01); G07C 2009/00261 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A safety system for an object comprising:
a transmitter comprising a microcontroller configured to generate an identification signal having a given frequency and a resonant circuit configured to amplify said identification signal, the transmitter being suitable to be placed in the vicinity of a body of a user to capacitively couple said identification signal to the body,
a receiver suitable to be capacitively coupled to said body and being configured to receive said identification signal and to recognize based on said identification signal if the user is an authorized user, and
a resonant frequency estimation means configured to estimate an actual resonant frequency of said resonant circuit when the resonant circuit is amplifying said identification signal and the microcontroller is adapted to choose, based on said estimated actual resonant frequency, as frequency for the identification signal the closest frequency to the estimated actual resonant frequency the microcontroller can generate so that the amplification of the identification signal is maximized;
wherein the safety system is configured to generate an unlocking signal in order to unlock the object when the object is locked and the receiver receives the identification signal and identifies the user as an authorized user based on one or both of: the received identification signal, and whether the intensity of the received identification signal exceeds a first signal intensity threshold;
wherein the safety system is configured to generate a locking signal in order to lock the object when the object is not locked and the receiver receives the identification signal and based on one or both of: said received identification signal the user is identified as a non-authorized user, and whether the intensity of the received identification signal is under a second signal intensity threshold; and
wherein the safety system is configured to adjust the first and second signal intensity thresholds according to one or both of: physical characteristics of the user, and presence of certain objects around the user.