A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm
A non-dispersive infrared (NDIR) methane gas sensor prototype has achieved a minimum detection limit of 1 parts per million by volume (ppm). The central idea of the design of the sensor is to decrease the detection limit by increasing the signal to noise ratio (SNR) of the system. In order to decrea...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2012-09-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/12/9/12729 |
| _version_ | 1811302432808894464 |
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| author | Binqing Jiang Zipeng Zhu Yuhui Xu |
| author_facet | Binqing Jiang Zipeng Zhu Yuhui Xu |
| author_sort | Binqing Jiang |
| collection | DOAJ |
| description | A non-dispersive infrared (NDIR) methane gas sensor prototype has achieved a minimum detection limit of 1 parts per million by volume (ppm). The central idea of the design of the sensor is to decrease the detection limit by increasing the signal to noise ratio (SNR) of the system. In order to decrease the noise level, a single frequency filter algorithm based on fast Fourier transform (FFT) is adopted for signal processing. Through simulation and experiment, it is found that the full width at half maximum (FWHM) of the filter narrows with the extension of sampling period and the increase of lamp modulation frequency, and at some optimum sampling period and modulation frequency, the filtered signal maintains a noise to signal ratio of below 1/10,000. The sensor prototype provides the key techniques for a hand-held methane detector that has a low cost and a high resolution. Such a detector may facilitate the detection of leakage of city natural gas pipelines buried underground, the monitoring of landfill gas, the monitoring of air quality and so on. |
| first_indexed | 2024-04-13T07:27:44Z |
| format | Article |
| id | doaj.art-5e3139ff49a342a3bb10dac28f7be604 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T07:27:44Z |
| publishDate | 2012-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5e3139ff49a342a3bb10dac28f7be6042022-12-22T02:56:26ZengMDPI AGSensors1424-82202012-09-01129127291274010.3390/s120912729A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising AlgorithmBinqing JiangZipeng ZhuYuhui XuA non-dispersive infrared (NDIR) methane gas sensor prototype has achieved a minimum detection limit of 1 parts per million by volume (ppm). The central idea of the design of the sensor is to decrease the detection limit by increasing the signal to noise ratio (SNR) of the system. In order to decrease the noise level, a single frequency filter algorithm based on fast Fourier transform (FFT) is adopted for signal processing. Through simulation and experiment, it is found that the full width at half maximum (FWHM) of the filter narrows with the extension of sampling period and the increase of lamp modulation frequency, and at some optimum sampling period and modulation frequency, the filtered signal maintains a noise to signal ratio of below 1/10,000. The sensor prototype provides the key techniques for a hand-held methane detector that has a low cost and a high resolution. Such a detector may facilitate the detection of leakage of city natural gas pipelines buried underground, the monitoring of landfill gas, the monitoring of air quality and so on.http://www.mdpi.com/1424-8220/12/9/12729methaneNDIRFFTgas sensor |
| spellingShingle | Binqing Jiang Zipeng Zhu Yuhui Xu A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm Sensors methane NDIR FFT gas sensor |
| title | A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm |
| title_full | A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm |
| title_fullStr | A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm |
| title_full_unstemmed | A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm |
| title_short | A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm |
| title_sort | one ppm ndir methane gas sensor with single frequency filter denoising algorithm |
| topic | methane NDIR FFT gas sensor |
| url | http://www.mdpi.com/1424-8220/12/9/12729 |
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