Laser type remote PH (potential of hydrogen) value monitoring device

A monitoring device, a technology of pH value, applied in the direction of measurement device, phase influence characteristic measurement, material analysis by optical means, etc., can solve the problems of complex structure of pH value monitoring equipment, inability to realize long-distance real-time monitoring, etc., and achieve a simple structure. , low cost and quick response

Pending Publication Date: 2017-09-05
GUANGXI NORMAL UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a laser-type remote pH value monitoring device, which solves

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  • Laser type remote PH (potential of hydrogen) value monitoring device
  • Laser type remote PH (potential of hydrogen) value monitoring device
  • Laser type remote PH (potential of hydrogen) value monitoring device

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] combine Figure 1 to Figure 3 Commonly shown is a laser-type remote pH value monitoring device, including a narrow linewidth laser 1, a 3dB coupler 3, a delivery fiber 4, a D-shaped fiber 51, a polarization-maintaining fiber 52, a liquid-carrying tank 6 and an optical power meter 7. The D-shaped optical fiber 51 and the polarization-maintaining optical fiber 52 are welded together to form a sensing head. The 3dB coupler 3 includes an A port, a B port, a C port, and a D port. The output end of the narrow linewidth laser 1 is connected to the A port of the 3dB coupler 3, the B port of the 3dB coupler is connected to the D-shaped optical fiber 51 of the sensing head through the delivery fiber 4, and the D port is connected to the polarization maintaining fiber 52 through the delivery fiber 4, and the C The port is connected to an optical power met...

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Abstract

The invention discloses a laser type remote PH (potential of hydrogen) value monitoring device. The laser type remote PH value monitoring device comprises a narrow-linewidth laser device, a 3dB coupler, transmission optical fibers, a sensing head, a liquid carrying tank and an optical power meter. The 3dB coupler comprises a port A, a port B, a port C and a port D, an output end of the narrow-linewidth laser device is connected with the port A of the 3dB coupler, the sensing head comprises a D-shaped optical fiber and a polarization maintaining optical fiber, the port B is connected with the D-shaped optical fiber of the sensing head by the corresponding transmission optical fiber, the port D is connected with the polarization maintaining optical fiber by the corresponding transmission optical fiber, and the port C is connected with the optical power meter. The laser type remote PH value monitoring device has the advantage that the technical problems of complicated structure of PH value monitoring equipment and incapability of remotely monitoring PH values over long distances in real time can be solved by the aid of the laser type remote PH value monitoring device.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensors, in particular to a laser type remote pH value monitoring device for monitoring the pH value of a solution. Background technique [0002] The pH value of a liquid is an important parameter reflecting its acidity and alkalinity, and it is also an important parameter index in the technical fields of modern industrial process control technology, biotechnology, medical treatment and environmental monitoring. Therefore, the accurate measurement and monitoring of pH value has important practical significance. [0003] The traditional pH measurement methods include pH test paper comparison method, pH glass electrode method, indicator analysis method, etc. These methods have the disadvantages of long response time, poor stability and low measurement accuracy. Optical fiber sensors are used for pH measurement due to their high sensitivity, good stability and strong anti-interference. The ex...

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Application Information

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IPC IPC(8): G01N21/45
CPCG01N21/45G01N2201/06113G01N2201/088G01N2021/458
Inventor 胡君辉陆杭林阳丽杜婧邵来鹏吴天银
Owner GUANGXI NORMAL UNIV
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