US 12,259,402 B2
Acceleration sensing device
Wenbing Zhou, Shenzhen (CN); Wenjun Deng, Shenzhen (CN); Yongshuai Yuan, Shenzhen (CN); Yujia Huang, Shenzhen (CN); Xin Qi, Shenzhen (CN); and Fengyun Liao, Shenzhen (CN)
Assigned to SHENZHEN SHOKZ CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SHOKZ CO., LTD., Guangdong (CN)
Filed on Jul. 13, 2022, as Appl. No. 17/812,176.
Application 17/812,176 is a continuation of application No. PCT/CN2022/071932, filed on Jan. 14, 2022.
Claims priority of application No. 202110445739.3 (CN), filed on Apr. 23, 2021.
Prior Publication US 2022/0341964 A1, Oct. 27, 2022
Int. Cl. G01P 15/125 (2006.01); G01P 1/02 (2006.01); G01P 15/097 (2006.01)
CPC G01P 15/125 (2013.01) [G01P 1/023 (2013.01); G01P 15/097 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sensing device, comprising:
an acceleration sensor, having a first resonant frequency, wherein the acceleration sensor includes a housing and a sensing element, and the sensing element is located within a cavity formed by the housing; and
at least one resonant system, coupled to the sensing element, wherein the at least one resonant system includes a first medium and a second medium disposed in the housing, and the first medium includes liquid in which the sensing element is immersed, the second medium includes gas, and the gas is distributed in the liquid in a form of one or more bubbles, a volume of the one or more bubbles accounts for 30%-50% of a volume of the cavity, the at least one resonant system provides at least one second resonant frequency for the sensing device, and a difference between the first resonant frequency and the at least one second resonant frequency is within a range of 100 Hz-1500 Hz.