Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching
This paper presents the design and performance evaluation of an inductive conductivity sensor with a double tuning impedance matching network to enhance sensitivity and improve linearity. The sensor’s equivalent circuit model is analyzed and verified through simulation, and impedance matching is sho...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/25/2/293 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832587598050099200 |
|---|---|
| author | Yang Li Rongxing Yu Zhiqiang Liu Yujie Gao Chengxu Tang Qiao Li Chao Yuan |
| author_facet | Yang Li Rongxing Yu Zhiqiang Liu Yujie Gao Chengxu Tang Qiao Li Chao Yuan |
| author_sort | Yang Li |
| collection | DOAJ |
| description | This paper presents the design and performance evaluation of an inductive conductivity sensor with a double tuning impedance matching network to enhance sensitivity and improve linearity. The sensor’s equivalent circuit model is analyzed and verified through simulation, and impedance matching is shown to significantly increase the sensor’s output signal, particularly at low conductivity measurements. Double tuning impedance matching expands the frequency response range and optimizes power transfer efficiency, achieving a higher power factor across a broader frequency range. Experimental results confirm that the sensor’s sensitivity increases by approximately 30% after impedance matching with optimal performance at a frequency of 9865 Hz. Furthermore, while the impedance matching improves sensitivity, it also introduces some nonlinear errors, which are evaluated using a performance function that balances sensitivity and linearity. The results demonstrate that impedance matching enhances the sensor’s measurement capability, making it more effective in practical applications where conductivity changes need to be accurately monitored across varying frequencies. |
| format | Article |
| id | doaj-art-c9d7902b65524b09ab782514f076001e |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-c9d7902b65524b09ab782514f076001e2025-01-24T13:48:24ZengMDPI AGSensors1424-82202025-01-0125229310.3390/s25020293Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance MatchingYang Li0Rongxing Yu1Zhiqiang Liu2Yujie Gao3Chengxu Tang4Qiao Li5Chao Yuan6EHV Transmission Companies Dali Office of China Southern Power Grid Co., Ltd., Dali 671000, ChinaEHV Transmission Companies Dali Office of China Southern Power Grid Co., Ltd., Dali 671000, ChinaEHV Transmission Companies Dali Office of China Southern Power Grid Co., Ltd., Dali 671000, ChinaEHV Transmission Companies Dali Office of China Southern Power Grid Co., Ltd., Dali 671000, ChinaCollege of Electrical and Information Engineering, Hunan University, Changsha 410082, ChinaCollege of Electrical and Information Engineering, Hunan University, Changsha 410082, ChinaCollege of Electrical and Information Engineering, Hunan University, Changsha 410082, ChinaThis paper presents the design and performance evaluation of an inductive conductivity sensor with a double tuning impedance matching network to enhance sensitivity and improve linearity. The sensor’s equivalent circuit model is analyzed and verified through simulation, and impedance matching is shown to significantly increase the sensor’s output signal, particularly at low conductivity measurements. Double tuning impedance matching expands the frequency response range and optimizes power transfer efficiency, achieving a higher power factor across a broader frequency range. Experimental results confirm that the sensor’s sensitivity increases by approximately 30% after impedance matching with optimal performance at a frequency of 9865 Hz. Furthermore, while the impedance matching improves sensitivity, it also introduces some nonlinear errors, which are evaluated using a performance function that balances sensitivity and linearity. The results demonstrate that impedance matching enhances the sensor’s measurement capability, making it more effective in practical applications where conductivity changes need to be accurately monitored across varying frequencies.https://www.mdpi.com/1424-8220/25/2/293inductive conductivity sensorimpedance matchingsensitivity enhancementsignal optimization |
| spellingShingle | Yang Li Rongxing Yu Zhiqiang Liu Yujie Gao Chengxu Tang Qiao Li Chao Yuan Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching Sensors inductive conductivity sensor impedance matching sensitivity enhancement signal optimization |
| title | Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching |
| title_full | Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching |
| title_fullStr | Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching |
| title_full_unstemmed | Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching |
| title_short | Research on the Sensitivity Enhancement Method of Inductive Conductivity Sensors Based on Impedance Matching |
| title_sort | research on the sensitivity enhancement method of inductive conductivity sensors based on impedance matching |
| topic | inductive conductivity sensor impedance matching sensitivity enhancement signal optimization |
| url | https://www.mdpi.com/1424-8220/25/2/293 |
| work_keys_str_mv | AT yangli researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT rongxingyu researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT zhiqiangliu researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT yujiegao researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT chengxutang researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT qiaoli researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching AT chaoyuan researchonthesensitivityenhancementmethodofinductiveconductivitysensorsbasedonimpedancematching |