A Distributed Optical Fiber Liquid Level Sensing System
A distributed optical fiber, sensing system technology, applied in liquid level indicators, liquid/fluid solid measurement, instruments, etc., can solve the problems of inaccurate measurement results, potential safety hazards, high cost, etc., and achieve simple installation process, Low weight and low cost
Active Publication Date: 2020-09-18
BEIJING INST OF AEROSPACE CONTROL DEVICES
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Based on the above traditional liquid level sensors, there are many problems that are difficult to solve, including but not limited to: high cost, potential safety hazards, heavy weight, and inaccurate measurement results, etc.
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
[0035] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the disclosed embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0036] Reference figure 1 , Shows a schematic structural diagram of a distributed optical fiber liquid level sensing system in an embodiment of the present invention. In this embodiment, the distributed optical fiber liquid level sensing system includes: an optical fiber liquid level sensor 100, a fiber grating demodulator 4, and a bonding device 6. Wherein, the optical fiber liquid level sensor 100 includes an optical fiber 2 and at least two optical fiber long period grating LPG sensors 5 continuously written along the optical fiber axis of the optical fiber 2.
[0037] Such as figure 1 , The optical fiber liquid level sensor 100 and the output end of the optical fiber grating demodulator 4 are connected by optical fibers; the optic...
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
Login to View More Abstract
The invention discloses a distributed optical fiber level sensing system. The distributed optical fiber level sensing system comprises an optical fiber level sensor, an optical fiber grating demodulator and a bonding device, wherein the optical fiber level sensor comprises an optical fiber and at least two optical fiber long-period grating (LPG) sensors continuously inscribed in the axial direction of the optical fiber; the optical fiber level sensor is connected with the optical fiber grating demodulator through the optical fiber; the optical fiber level sensor is fixed inside a container tobe detected through the bonding device to form an array type optical fiber sensing network and further to determine the level of solution inside the container to be detected on the basis of the arraytype optical fiber sensing network and the optical fiber grating demodulator. The distributed optical fiber level sensing system can not only measure three-dimensional distributed container level information, but also be rapid in reaction and capable of achieving accurate and comprehensive level sensing results; meanwhile, compared with complicated encapsulating manners of electric instruments, reduces the weight of the sensor and eliminate irretrievable losses caused by explosion of fuel tanks due to spark ignition of electric level gauges.
Description
Technical field [0001] The invention belongs to the technical field of optical fiber gratings, and particularly relates to a distributed optical fiber liquid level sensing system. Background technique [0002] Since the 1960s, the aerospace field has developed many liquid-air interface sensing devices based on differences in resistance, capacitance, acoustic impedance, and viscous damping. At present, typical liquid level sensing systems for measuring the amount of liquid in a fuel tank include drawstring measurement, capacitance measurement, or measurement using a series of temperature or thermal resistance sensing devices in a rake or array configuration. [0003] Based on the above traditional liquid level sensors, there are many difficult to solve problems, including but not limited to: high cost, potential safety hazards, heavy weight, and inaccurate measurement results. Summary of the invention [0004] The technical problem solved by the present invention is to overcome the ...
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): G01F23/292
CPCG01F23/292
Inventor 梅影王学锋蓝天卞贺明唐才杰白利强崔留住王明超易小龙
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES