Title:
FPGA-BASED OPTICAL FIBER VIBRATION DEMODULATION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/055344
Kind Code:
A1
Abstract:
An FPGA-based optical fiber vibration demodulation device and method. The device comprises an FPGA parallel processor (2); the FPGA parallel processor (2) provides a plurality of optical fiber channels; each optical fiber channel comprises a pulse encoding module (21), an ADC sampling module (22), a phase demodulation module (23) and a phase merging module (24); the FPGA parallel processor (2) is used for controlling the pulse encoding modules (21), the ADC sampling modules (22), the phase demodulation modules (23) and the phase merging modules (24) in the plurality of optical fiber channels to simultaneously perform pulse encoding, sampling, phase demodulation and phase merging, respectively; the FPGA parallel processor (2) is further used for controlling the pulse encoding module (21), the ADC sampling module (22), the phase demodulation module (23) and the phase merging module (24) in each single optical fiber channel to simultaneously perform pulse encoding, sampling, phase demodulation and phase merging, respectively. Multi-channel parallel processing of optical fibers and pipeline processing of optical fibers in a single channel are implemented, thus achieving the purpose of high-speed, long-distance and multi-channel simultaneous demodulation of optical fibers.
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| WO/2024/058671 | OPTO-ACOUSTIC INTERROGATOR SYSTEM |
Inventors:
QIAN LEI (CN)
LI DUO (CN)
XIONG YAN (CN)
YU BENHUA (CN)
LIU QIN (CN)
LI DUO (CN)
XIONG YAN (CN)
YU BENHUA (CN)
LIU QIN (CN)
Application Number:
PCT/CN2022/119925
Publication Date:
March 21, 2024
Filing Date:
September 20, 2022
Export Citation:
Assignee:
WUHAN WUTOS CO LTD (CN)
International Classes:
G01H9/00; G01D5/353
Foreign References:
| CN106404153A | 2017-02-15 | |||
| CN107941255A | 2018-04-20 | |||
| CN104048684A | 2014-09-17 | |||
| CN104568119A | 2015-04-29 | |||
| CN109100007A | 2018-12-28 | |||
| CN109323751A | 2019-02-12 | |||
| US20220163377A1 | 2022-05-26 |
Other References:
潘岳 等 (PAN, YUE ET AL.): "基于FPGA的光纤振动传感信号采集与处理系统 (Signal Sampling and Processing System of Optical Fiber Vibration Sensor Based on FPGA)", PLC & FA, no. 06, 30 June 2012 (2012-06-30)
Attorney, Agent or Firm:
WUHAN ZHI JIA JOINT INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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