Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS
This paper proposes the design of a highly responsive, compact, non-contact methane telemetry sensor, employing the open-path tunable diode laser absorption spectroscopy (OP-TDLAS) technology. The sensor uses the dual-core structure of FPGA and ARM to achieve high-speed methane telemetry at 100 KHz...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/11/1281 |
| _version_ | 1797457972529463296 |
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| author | Qi Wu Yuanjin Yang Yuechun Shi Yang Xu Wenlong Wang Chao Men Bingxiong Yang |
| author_facet | Qi Wu Yuanjin Yang Yuechun Shi Yang Xu Wenlong Wang Chao Men Bingxiong Yang |
| author_sort | Qi Wu |
| collection | DOAJ |
| description | This paper proposes the design of a highly responsive, compact, non-contact methane telemetry sensor, employing the open-path tunable diode laser absorption spectroscopy (OP-TDLAS) technology. The sensor uses the dual-core structure of FPGA and ARM to achieve high-speed methane telemetry at 100 KHz repeated modulation frequency for the first time with a non-cooperate target, and a higher gas responsive time of 1.8 ms was achieved than previously reported. Moreover, the optical system (L × W × H: 68.8 × 52 × 62.7 mm) and the electronic system (L × W: 70 × 50 mm) make the sensor more compact. Methane gas samples of varying integral concentrations were examined at a distance of 20 m. The amplitude of the absorption peaks was subjected to a linear fit with the standard concentration values, resulting in a robust linear correlation coefficient (R<sup>2</sup> = 0.998). Notably, despite the compact form factor of the methane sensor, it demonstrated commendable stability in gas concentration detection, offering a minimum detection limit of 43.14 ppm·m. Consequently, this highly responsive and compact methane sensor, with its open-path feature, is apt for integration into a variety of applications requiring such attributes. These include handheld telemetry devices, Unmanned Aerial Vehicle (UAV) gas detection systems, vehicle mounted gas detection, and laser gas radar. |
| first_indexed | 2024-03-09T16:31:26Z |
| format | Article |
| id | doaj.art-6d754629222b4135a1c7cba93cd49182 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T16:31:26Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-6d754629222b4135a1c7cba93cd491822023-11-24T15:01:44ZengMDPI AGPhotonics2304-67322023-11-011011128110.3390/photonics10111281Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLASQi Wu0Yuanjin Yang1Yuechun Shi2Yang Xu3Wenlong Wang4Chao Men5Bingxiong Yang6College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaNanjing Puguang Chip Technology Co., Nanjing 211800, ChinaCollege of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaNanjing Puguang Chip Technology Co., Nanjing 211800, ChinaNanjing Puguang Chip Technology Co., Nanjing 211800, ChinaCollege of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaThis paper proposes the design of a highly responsive, compact, non-contact methane telemetry sensor, employing the open-path tunable diode laser absorption spectroscopy (OP-TDLAS) technology. The sensor uses the dual-core structure of FPGA and ARM to achieve high-speed methane telemetry at 100 KHz repeated modulation frequency for the first time with a non-cooperate target, and a higher gas responsive time of 1.8 ms was achieved than previously reported. Moreover, the optical system (L × W × H: 68.8 × 52 × 62.7 mm) and the electronic system (L × W: 70 × 50 mm) make the sensor more compact. Methane gas samples of varying integral concentrations were examined at a distance of 20 m. The amplitude of the absorption peaks was subjected to a linear fit with the standard concentration values, resulting in a robust linear correlation coefficient (R<sup>2</sup> = 0.998). Notably, despite the compact form factor of the methane sensor, it demonstrated commendable stability in gas concentration detection, offering a minimum detection limit of 43.14 ppm·m. Consequently, this highly responsive and compact methane sensor, with its open-path feature, is apt for integration into a variety of applications requiring such attributes. These include handheld telemetry devices, Unmanned Aerial Vehicle (UAV) gas detection systems, vehicle mounted gas detection, and laser gas radar.https://www.mdpi.com/2304-6732/10/11/1281high responsivenessminiaturizationmethane telemetryOP-TDLAS |
| spellingShingle | Qi Wu Yuanjin Yang Yuechun Shi Yang Xu Wenlong Wang Chao Men Bingxiong Yang Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS Photonics high responsiveness miniaturization methane telemetry OP-TDLAS |
| title | Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS |
| title_full | Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS |
| title_fullStr | Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS |
| title_full_unstemmed | Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS |
| title_short | Highly Responsive, Miniaturized Methane Telemetry Sensor Based on Open-Path TDLAS |
| title_sort | highly responsive miniaturized methane telemetry sensor based on open path tdlas |
| topic | high responsiveness miniaturization methane telemetry OP-TDLAS |
| url | https://www.mdpi.com/2304-6732/10/11/1281 |
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