中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.016 seconds)

    HIGH-PRECISION TEMPERATURE DEMODULATION METHOD ORIENTED TOWARD DISTRIBUTED FIBER RAMAN SENSOR
    2.
    发明申请
    HIGH-PRECISION TEMPERATURE DEMODULATION METHOD ORIENTED TOWARD DISTRIBUTED FIBER RAMAN SENSOR 有权

    公开(公告)号：US20210270682A1

    公开(公告)日：2021-09-02

    申请号：US17252995

    申请日：2019-05-05

    Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY

    Inventor： Mingjiang Zhang ,  Jian Li ,  Jianzhong Zhang ,  Lijun Qiao ,  Tao Wang ,  Yuncai Wang ,  Baoquan Jin ,  Yu Wang ,  Dong Wang

    IPC: G01K11/324

    Abstract: A temperature demodulation method oriented toward a distributed fiber Raman temperature sensing system, the method comprising the following steps: step 1 of constructing a high-precision temperature detection device oriented towards a distributed fiber Raman sensing system; step 2 of performing signal processing with respect to Stokes light and anti-Stokes light at a calibration stage; step 3 of performing signal processing with respect to Stokes light and the anti-Stokes light at a measurement stage; and step 4 of obtaining a high-precision temperature demodulation technique oriented toward the distributed fiber Raman sensor. The method is used to effectively resolve the issue of low temperature measuring accuracy caused by Rayleigh crosstalk in existing distributed fiber Raman temperature measurement systems, and temperature measurement accuracy thereof is expected to fall within ±0.1° C. The method is applicable to distributed fiber Raman temperature measurement systems.

    Process for macroscopically separating maceral concentrate from raw coal
    3.
    发明授权
    Process for macroscopically separating maceral concentrate from raw coal 有权

    公开(公告)号：US10906048B1

    公开(公告)日：2021-02-02

    申请号：US16879737

    申请日：2020-05-20

    Applicant: Taiyuan University of Technology

    Inventor： Wei Huang ,  Dong Wang ,  Jun Wang ,  Chunyan Tu ,  Litong Liang ,  Zeyu Peng

    IPC: B03D1/02 ,  B03B5/32 ,  B03B7/00 ,  B03B9/00 ,  B03B5/34

    Abstract: Processes for macroscopically separating a maceral concentrate from raw coal are disclosed. In some embodiments, a process includes the following steps: crushing and sieving the raw coal to obtain a first coal sample and a second coal sample; subjecting the first coal sample to a heavy medium cyclone separation process; and subjecting the second coal sample to a froth flotation process. The first coal sample has a particle size within a first particle size range, and the second coal sample has a particle size within a second particle size range. In other embodiments, the froth flotation process uses a froth flotation agent including a foaming agent and a collector. The foaming agent includes at least one item selected from the group consisting of 2-octanol, terpenic oil, and polyethylene glycol (PEG). The collector includes at least one item selected from the group consisting of kerosene, diethyl phthalate (BET), and diesel.

    High-precision temperature demodulation method oriented toward distributed fiber Raman sensor
    4.
    发明授权
    High-precision temperature demodulation method oriented toward distributed fiber Raman sensor 有权

    公开(公告)号：US11808639B2

    公开(公告)日：2023-11-07

    申请号：US17252995

    申请日：2019-05-05

    Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY

    Inventor： Mingjiang Zhang ,  Jian Li ,  Jianzhong Zhang ,  Lijun Qiao ,  Tao Wang ,  Yuncai Wang ,  Baoquan Jin ,  Yu Wang ,  Dong Wang

    IPC: G01K11/324

    CPC classification number: G01K11/324

    Abstract: A temperature demodulation method oriented toward a distributed fiber Raman temperature sensing system, the method comprising the following steps: step 1 of constructing a high-precision temperature detection device oriented towards a distributed fiber Raman sensing system; step 2 of performing signal processing with respect to Stokes light and anti-Stokes light at a calibration stage; step 3 of performing signal processing with respect to Stokes light and the anti-Stokes light at a measurement stage; and step 4 of obtaining a high-precision temperature demodulation technique oriented toward the distributed fiber Raman sensor. The method is used to effectively resolve the issue of low temperature measuring accuracy caused by Rayleigh crosstalk in existing distributed fiber Raman temperature measurement systems, and temperature measurement accuracy thereof is expected to fall within ±0.1° C. The method is applicable to distributed fiber Raman temperature measurement systems.

Patent Agency Ranking