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A Tunable Polymer Microvial Based Ethanol Gas Sensor

A gas sensor and polymer technology, applied in the field of sensing, can solve problems such as inability to guarantee uniformity, complicated operation, and gas concentration measurement error, and achieve the effects of avoiding the reduction of gas concentration sensitivity, simple manufacturing process, and stable structure

Active Publication Date: 2020-10-16
NORTHEASTERN UNIV LIAONING
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  • Description
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Problems solved by technology

However, if the sensitive film wants to be bonded to the optical fiber, the optical fiber needs to be processed, which is not only complicated to operate, but also cannot guarantee uniformity
In addition, the sensitive membrane is easily peeled off during the measurement
These not only affect the stability of the measurement, but also bring errors to the measurement of gas concentration, and even cause the sensor to fail to work

Method used

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  • A Tunable Polymer Microvial Based Ethanol Gas Sensor
  • A Tunable Polymer Microvial Based Ethanol Gas Sensor
  • A Tunable Polymer Microvial Based Ethanol Gas Sensor

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the specific structure, principle and working process of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] Such as figure 1 Shown is a transmissive optical fiber sensor for ethanol gas concentration measurement proposed by the present invention. Its working process is as follows: the light emitted by the wide-spectrum light source 1 is first transmitted to the micro-nano fiber 22 through the first single-mode fiber 6, and due to the evanescent field generated by the micro-nano fiber 22, the light is coupled into the tunable polymer microvial 21 and generated Due to the resonance effect, the light satisfying the resonance wavelength will be localized in the tunable polymer microvial 21, and the rest of the light enters the second single-mode fiber 7 through the mic...

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Abstract

The invention discloses a tunable polymer micro bottle-based alcohol gas sensor. The tunable polymer micro bottle-based alcohol gas sensor comprises a wide-spectrum light source, a sensing unit, a spectrograph, an air chamber, a vacuum pump and an injector, wherein the wide-spectrum light source is connected with the sensing unit by a first single-mode fiber, the sensing unit is connected with thespectrograph by a second single-mode fiber, the sensing unit is arranged in the air chamber and comprises a third single-mode fiber and a micro-nano fiber, the third single-mode fiber is provided with a tunable polymer micro bottle, the third single-mode and the micro-nano fiber are arranged perpendicular to each other, two ends of the micro-nano fiber are respectively welded with the first single-mode fiber and the second single-mode fiber, and the injector is connected with the air chamber by a pipeline and is used for controlling concentration of an alcohol gas in the air chamber. The tunable polymer micro bottle-based alcohol gas sensor provided by the injection is simple in fabrication process, low in cost and stable in structure, the tunable polymer micro bottle is employed, and concentration measurement of the alcohol gas is achieved.

Description

technical field [0001] The invention belongs to the field of sensor technology and relates to an ethanol gas sensor based on a tunable polymer micro-bottle. Background technique [0002] With the improvement of social and economic level, people also have demand for air quality in daily life, especially the indoor environment that most people come into contact with, and volatile organic compounds (VOC) are the main pollutants in the indoor environment, usually VOC gas is Produced by building materials, furniture, ink, etc. that are often used and contacted in daily life, it is estimated that 50 to 300 VOC gases can be detected in indoor spaces such as libraries, homes, offices, and restaurants [Mirzaei A, Leonardi S G, Neri G .Detection of hazardous volatile organic compounds(VOCs)by metal oxidenanostructures-based gas sensors:A review[J].Ceramics International,2016:S0272884216309889.]. VOC gases are hydrocarbon chemicals which generally have a low boiling point and therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
CPCG01N21/25G01N21/255
Inventor 张亚男朱耐思史卜凡孙洋郑万禄
Owner NORTHEASTERN UNIV LIAONING
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