Seawater temperature profile measurement method based on fiber grating principle
A fiber grating and temperature profile technology, applied in the field of measurement, can solve the problems that the optical cable cannot meet the application requirements, meet the requirements of reducing the spectral width of the light source and the number of detection channels, good temperature sensing performance, good tensile and lateral pressure resistance Effect
Inactive Publication Date: 2011-11-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, existing optical cables cannot meet the above application requirements
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] see figure 1 , figure 2 , the sensor optical cable designed by the present invention is made up of double buckle stainless steel hose 2, temperature sensing sub-optic cable and pressure sensing sub-optic cable. The temperature sensing sub-optical cable is composed of a stainless steel waterproof casing 1 and a temperature sensor string.
[0050] The temperature sensor string is composed of multiple fiber grating temperature sensors connected end-to-end through plastic-wrapped tight-sleeved transmission fibers; 11 Carry out fixed bonding of the plastic-encased tight-sleeved transmission optical fiber 14 drawn out and the micro-metal sleeve 10 (see figure 2 ).
[0051] The pressure sensing sub-optical cable includes stainless steel wire braided mesh 4, stainless steel outer sheath 5 and pressure sensor string; the pressure sensor string is made of fiber grating pressure sensor 16 connected end-to-end through plastic-wrapped tight-sleeved transmission optical fiber 6;...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a seawater temperature profile measurement method based on the fiber grating principle. In the method, a pressure sensor string and a temperature sensor string are combined to form a sensor cable with the temperature sensors corresponding to the pressure sensors, the sensor cable is arranged in seawater during measurement, the temperature sensors and the pressure sensors in the cable collect information on the seawater temperature and depth, a measurement system based on the fiber grating principle measures the Bragg wavelength of each temperature sensor and each pressure sensor in the sensor cable, information on the seawater temperature and depth is then demodulated according to the Bragg wavelength of each sensor and the functional relation between the seawatertemperature and the seawater pressure, and the seawater temperature profile curve is drawn. The invention can realize the real-time and synchronous observation of seawater temperature profiles, and has high reliability and measurement sensitivity. The applied sensor cable has a small size and also seawater corrosion resistance, and can be laid easily.
Description
technical field [0001] The invention relates to a method for measuring the temperature distribution of seawater along the depth direction, which belongs to the technical field of measurement. Background technique [0002] Seawater temperature is an important content in marine survey and monitoring, and an indispensable technical parameter in marine hydrology, meteorological observation and survey. The measurement of seawater temperature profile has very important practical significance for the research of marine science, marine environment monitoring, seasonal climate prediction and marine fishery. The so-called seawater temperature profile measurement refers to the measurement of seawater temperature distribution along the depth direction, that is, the water depth and the temperature information at the corresponding depth are given, and the corresponding observation time is also given for long-term real-time observation. [0003] At present, thermohaline deep ocean observa...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32G01K13/02G01B11/22G01K11/3206G01K13/00
Inventor 尚秋峰何玉均范寒柏李永倩
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)