US 11,898,812 B2
Safety control system for portable weapons, including crossbow and firearms, such as handguns, rifles and alike
Jiuhong Song, Vancouver (CA); and Xinting Liu, HuBei (CN)
Appl. No. 17/442,825
Filed by Jiuhong Song, Vancouver (CA)
PCT Filed Mar. 29, 2019, PCT No. PCT/IB2019/000325
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/201787, PCT Pub. Date Oct. 8, 2020.
Prior Publication US 2022/0221240 A1, Jul. 14, 2022
Int. Cl. F41A 17/06 (2006.01); F41A 17/08 (2006.01)
CPC F41A 17/066 (2013.01) [F41A 17/063 (2013.01); F41A 17/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A safety control system for a portable weapon, comprising:
a microcontroller for controlling a driver to drive an actuator for actuating a lock mechanism; and
a vital sign detection sensor being in communication with said microcontroller and to detect a human in a direction to which said portable weapon is pointing; wherein said microcontroller determines to control said driver to drive said actuator to actuate said lock mechanism to lock a firing sequence of said portable weapon based on a detection signal from said vital sign detection sensor;
wherein said vital detection sensor is a body temperature sensor comprising:
a pyroelectric infrared sensor;
a Fresnel lens having a first side with a smooth surface and a second side with patterns, said second side facing with said pyroelectric infrared sensor; and
a cylindrical housing member for housing said pyroelectric infrared sensor at one end, and said lens disposed at a focal distance of said lens away from said pyroelectric infrared sensor.