Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System
The accuracy and stability of excitation source determine the measurement accuracy of passive sensor measurement system, but the implementation of high-precision excitation source (especially AC excitation source) is difficult or costly in design and process. For this purpose, this paper proposes a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8946627/ |
| _version_ | 1818911366616973312 |
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| author | Jintao Zhang Gang Li Yongshun Luo Shuqiang Yang Han Tian Ling Lin |
| author_facet | Jintao Zhang Gang Li Yongshun Luo Shuqiang Yang Han Tian Ling Lin |
| author_sort | Jintao Zhang |
| collection | DOAJ |
| description | The accuracy and stability of excitation source determine the measurement accuracy of passive sensor measurement system, but the implementation of high-precision excitation source (especially AC excitation source) is difficult or costly in design and process. For this purpose, this paper proposes a systematic proportional method. In this method, the DC voltage converted by the excitation signal is taken as the reference voltage of the ADC used in this system. And then the ratio of the measured signal to the excitation signal is obtained by using the transmission characteristics of the ADC, therefore the amplitude fluctuation of the excitation signal is compensated. The method can greatly suppress the measurement error caused by the amplitude fluctuation of the excitation signal and the fluctuation of the ADC reference voltage, and effectively improve the measurement accuracy of the measurement system. To verify the effectiveness of the proposed method, the Wheatstone bridge measurement circuit is designed. The experimental results show that when the amplitude of the excitation signal changes 50%, the measurement result of the measurement system using non-proportional method changes about 50%, while that of the measurement system using proportional method only changes about 1%. To further improve the measurement accuracy, the DC bias voltage compensation circuit is added, and the maximum variation error of the measurement result after compensation is only 0.3%. More importantly, the method can also be extended to other linear measurement systems with excitation source in principle, which has greater application value. |
| first_indexed | 2024-12-19T22:57:34Z |
| format | Article |
| id | doaj.art-0f579c83310e488fa3a3ae2b84d8f3ad |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T22:57:34Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-0f579c83310e488fa3a3ae2b84d8f3ad2022-12-21T20:02:36ZengIEEEIEEE Access2169-35362020-01-0183980398610.1109/ACCESS.2019.29632048946627Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement SystemJintao Zhang0https://orcid.org/0000-0002-7408-3107Gang Li1https://orcid.org/0000-0002-8573-1608Yongshun Luo2https://orcid.org/0000-0002-2241-6475Shuqiang Yang3https://orcid.org/0000-0001-7402-0803Han Tian4https://orcid.org/0000-0002-1500-275XLing Lin5https://orcid.org/0000-0003-2022-3220State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, ChinaState Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, ChinaCollege of Mechanical and Electronic Engineering, Guangdong Polytechnic Normal University, Guangzhou, ChinaSchool of Physics and Electronic Information, Luoyang Normal University, Luoyang, ChinaCollege of Information Technology, Huaian College of Information Technology, Huaian, ChinaState Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, ChinaThe accuracy and stability of excitation source determine the measurement accuracy of passive sensor measurement system, but the implementation of high-precision excitation source (especially AC excitation source) is difficult or costly in design and process. For this purpose, this paper proposes a systematic proportional method. In this method, the DC voltage converted by the excitation signal is taken as the reference voltage of the ADC used in this system. And then the ratio of the measured signal to the excitation signal is obtained by using the transmission characteristics of the ADC, therefore the amplitude fluctuation of the excitation signal is compensated. The method can greatly suppress the measurement error caused by the amplitude fluctuation of the excitation signal and the fluctuation of the ADC reference voltage, and effectively improve the measurement accuracy of the measurement system. To verify the effectiveness of the proposed method, the Wheatstone bridge measurement circuit is designed. The experimental results show that when the amplitude of the excitation signal changes 50%, the measurement result of the measurement system using non-proportional method changes about 50%, while that of the measurement system using proportional method only changes about 1%. To further improve the measurement accuracy, the DC bias voltage compensation circuit is added, and the maximum variation error of the measurement result after compensation is only 0.3%. More importantly, the method can also be extended to other linear measurement systems with excitation source in principle, which has greater application value.https://ieeexplore.ieee.org/document/8946627/Systematic proportional methodmeasurement accuracypassive sensorexcitation sourcereference voltageDC bias compensation |
| spellingShingle | Jintao Zhang Gang Li Yongshun Luo Shuqiang Yang Han Tian Ling Lin Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System IEEE Access Systematic proportional method measurement accuracy passive sensor excitation source reference voltage DC bias compensation |
| title | Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System |
| title_full | Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System |
| title_fullStr | Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System |
| title_full_unstemmed | Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System |
| title_short | Systematic Proportional Method for Improving the Measurement Accuracy of Passive Sensor Measurement System |
| title_sort | systematic proportional method for improving the measurement accuracy of passive sensor measurement system |
| topic | Systematic proportional method measurement accuracy passive sensor excitation source reference voltage DC bias compensation |
| url | https://ieeexplore.ieee.org/document/8946627/ |
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