Title:
PHOTOELECTRIC COMPOSITE GEOPHONE AND DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/243993
Kind Code:
A1
Abstract:
A photoelectric composite geophone (1), comprising a housing (101), an optical fiber detection assembly (102) and a piezoelectric detection assembly (103). The optical fiber detection assembly (102) comprises a first compliant cylinder (1021) and a second compliant cylinder (1022), which are coaxially arranged, and a first optical fiber (1023) fixedly wound around the first compliant cylinder (1021) in a clockwise manner, and a second optical fiber (1024) fixedly wound around the second compliant cylinder (1022) in an anticlockwise manner. The piezoelectric detection assembly (103) is located between a lower end face of the first compliant cylinder (1021) and an upper end face of the second compliant cylinder (1022), and comprises a detection base (1031), a first piezoelectric piece (1032) fixedly arranged on an upper surface of the detection base (1031), a second piezoelectric piece (1033) fixedly arranged on a lower surface of the detection base (1031), and an electrical signal transmission line (1034) electrically connected to the first piezoelectric piece (1032) and the second piezoelectric piece (1033). By means of simultaneous measurement of seismic waves by combining the optical fiber detection assembly (102) with the piezoelectric detection assembly (103), the photoelectric composite geophone (1) can more accurately obtain an actual parameter of a vibration signal and has higher accuracy and credibility.
Inventors:
LIU QI (CN)
CHEN SHAOJIE (CN)
YIN DAWEI (CN)
FENG FAN (CN)
CHEN SHAOJIE (CN)
YIN DAWEI (CN)
FENG FAN (CN)
Application Number:
PCT/CN2019/091794
Publication Date:
December 10, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
UNIV SHANDONG SCIENCE & TECH (CN)
International Classes:
G01V1/18; G01V1/22
Foreign References:
| CN2599600Y | 2004-01-14 | |||
| CN106291668A | 2017-01-04 | |||
| CN104749615A | 2015-07-01 | |||
| CN102927912A | 2013-02-13 | |||
| CN201155991Y | 2008-11-26 | |||
| CN104237934A | 2014-12-24 | |||
| CN206523645U | 2017-09-26 | |||
| CN108627869A | 2018-10-09 | |||
| JP2011085487A | 2011-04-28 | |||
| US4322829A | 1982-03-30 |
Attorney, Agent or Firm:
SHENZHEN GHZF INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
Download PDF:
Previous Patent: GROOVE DEFECT DETECTION METHOD AND DEVICE
Next Patent: COMBINED BIOMASS CARBONIZATION, HEAT AND ELECTRICITY PRODUCTION SYSTEM
Next Patent: COMBINED BIOMASS CARBONIZATION, HEAT AND ELECTRICITY PRODUCTION SYSTEM