Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range
Capacitive transducers are widely used in fundamental physics experiments, seismology, Earth or planetary observations, and space scientific and technical applications because of their high precision, simple structure, and compatibility with various measurements. However, in real applications, there...
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| Format: | Article |
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MDPI AG
2020-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/4/992 |
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| author | Zhu Li Xian Zhang Shu Zou Xiangqing Huang Chao Xue Jianping Liu Qi Liu Shanqing Yang Liangcheng Tu |
| author_facet | Zhu Li Xian Zhang Shu Zou Xiangqing Huang Chao Xue Jianping Liu Qi Liu Shanqing Yang Liangcheng Tu |
| author_sort | Zhu Li |
| collection | DOAJ |
| description | Capacitive transducers are widely used in fundamental physics experiments, seismology, Earth or planetary observations, and space scientific and technical applications because of their high precision, simple structure, and compatibility with various measurements. However, in real applications, there is a trade-off between their resolution and dynamic range. Therefore, this paper is aimed at enlarging the dynamic range while ensuring high resolution. In this paper, a noise analysis of a capacitive transducer is presented, which shows that the amplitude noise of the carrier wave is the main limiting factor. Hence, a new method of generating a carrier wave with lower-amplitude noise is proposed in the paper. Based on the experimental verification, it is found that the carrier wave produced through the new method performed significantly better than the typical digital carrier wave when they were compared in the same sensing circuit. With the carrier wave produced through the new method, the dynamic range of the capacitive transducer can reach 120.7 dB, which is 18.3 dB greater than for the typical direct digital synthesis (DDS) method. In addition, the resolution of the carrier wave is mainly limited by the voltage reference components. |
| first_indexed | 2024-04-14T03:29:17Z |
| format | Article |
| id | doaj.art-a1804e452fc1457799c83beaef4648a8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T03:29:17Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a1804e452fc1457799c83beaef4648a82022-12-22T02:15:01ZengMDPI AGSensors1424-82202020-02-0120499210.3390/s20040992s20040992Design of a Carrier Wave for Capacitive Transducer with Large Dynamic RangeZhu Li0Xian Zhang1Shu Zou2Xiangqing Huang3Chao Xue4Jianping Liu5Qi Liu6Shanqing Yang7Liangcheng Tu8TianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, ChinaCapacitive transducers are widely used in fundamental physics experiments, seismology, Earth or planetary observations, and space scientific and technical applications because of their high precision, simple structure, and compatibility with various measurements. However, in real applications, there is a trade-off between their resolution and dynamic range. Therefore, this paper is aimed at enlarging the dynamic range while ensuring high resolution. In this paper, a noise analysis of a capacitive transducer is presented, which shows that the amplitude noise of the carrier wave is the main limiting factor. Hence, a new method of generating a carrier wave with lower-amplitude noise is proposed in the paper. Based on the experimental verification, it is found that the carrier wave produced through the new method performed significantly better than the typical digital carrier wave when they were compared in the same sensing circuit. With the carrier wave produced through the new method, the dynamic range of the capacitive transducer can reach 120.7 dB, which is 18.3 dB greater than for the typical direct digital synthesis (DDS) method. In addition, the resolution of the carrier wave is mainly limited by the voltage reference components.https://www.mdpi.com/1424-8220/20/4/992capacitive transducercarrier wavedynamic rangedisplacement measurement |
| spellingShingle | Zhu Li Xian Zhang Shu Zou Xiangqing Huang Chao Xue Jianping Liu Qi Liu Shanqing Yang Liangcheng Tu Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range Sensors capacitive transducer carrier wave dynamic range displacement measurement |
| title | Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range |
| title_full | Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range |
| title_fullStr | Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range |
| title_full_unstemmed | Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range |
| title_short | Design of a Carrier Wave for Capacitive Transducer with Large Dynamic Range |
| title_sort | design of a carrier wave for capacitive transducer with large dynamic range |
| topic | capacitive transducer carrier wave dynamic range displacement measurement |
| url | https://www.mdpi.com/1424-8220/20/4/992 |
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