Title:
VIBRATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2022/140921
Kind Code:
A1
Abstract:
A vibration sensor (100), comprising: a housing structure (110,510,610,710,810,910,1010,1110,1510,1710) and an acoustic transducer (120,520,620,720,820,920,1020,1120,1220,1320,1420,1520,1720) which is physically connected to the housing structure (110,510,610,710,810,910,1010,1110,1510,1710), wherein at least part of the housing structure (110,510,610,710,810,910,1010,1110,1510,1710) and the acoustic transducer (120,520,620,720,820,920,1020,1120,1220,1320,1420,1520,1720) define to form a first acoustic chamber (140,1040); and a vibration unit (130) which is located in the first acoustic chamber (140,1040) and partitions the first acoustic chamber (140,1040) into a second acoustic chamber (142,542,642,742,842,942,1042,1142,1242,1342,1442,1542,1642) and a third acoustic chamber (141,941,1041,1141,1541,1641), wherein the second acoustic chamber (142,542,642,742,842,942,1042,1142,1242,1342,1442,1542,1642) is in acoustic communication with the acoustic transducer (120,520,620,720,820,920,1020,1120,1220,1320,1420,1520,1720). The housing structure (110,510,610,710,810,910,1010,1110,1510,1710) is configured to vibrate based on external vibration signals. The vibration unit (130) changes the volume of the second acoustic chamber (142,542,642,742,842,942,1042,1142,1242,1342,1442,1542,1642) in response to the vibration of the housing structure (110,510,610,710,810,910,1010,1110,1510,1710), and the acoustic transducer (120,520,620,720,820,920,1020,1120,1220,1320,1420,1520,1720) generates electrical signals based on the change in the volume of the second acoustic chamber (142,542,642,742,842,942,1042,1142,1242,1342,1442,1542,1642). The vibration unit (130) acts on the second acoustic chamber (142,542,642,742,842,942,1042,1142,1242,1342,1442,1542,1642) such that the resonant frequency of the vibration sensor (100) is 800 Hz to 8000 Hz. The vibration sensor (100) has high sensitivity.
Inventors:
ZHENG JINBO (CN)
LIAO FENGYUN (CN)
QI XIN (CN)
LIAO FENGYUN (CN)
QI XIN (CN)
Application Number:
PCT/CN2020/140180
Publication Date:
July 07, 2022
Filing Date:
December 28, 2020
Export Citation:
Assignee:
SHENZHEN SHOKZ CO LTD (CN)
International Classes:
H04R19/04; H04R1/08; H04R9/06
Foreign References:
| CN108513241A | 2018-09-07 | |||
| CN211930820U | 2020-11-13 | |||
| CN208434106U | 2019-01-25 | |||
| CN211085470U | 2020-07-24 | |||
| CN111556419A | 2020-08-18 | |||
| CN212183709U | 2020-12-18 | |||
| CN210093551U | 2020-02-18 | |||
| CN210927933U | 2020-07-03 | |||
| CN211959556U | 2020-11-17 | |||
| CN110603819A | 2019-12-20 | |||
| US20160014530A1 | 2016-01-14 |
Other References:
See also references of EP 4203511A4
Attorney, Agent or Firm:
METIS IP (CHENGDU) LLC (CN)
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