A method for measuring liquid level using the flexural vibrations in a rod
Here we propose a novel measuring method of the liquid level in a water tank using the flexural vibration in a rod. With changing the water level, the frequency response of the vibrating rod is also changed due to the change of its radiation impedance. The flexural vibration along the rod can be gen...
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| Veröffentlicht in: | Acoustical Science and Technology 2008/07/01, Vol.29(4), pp.274-282 |
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| container_issue | 4 |
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| container_title | Acoustical Science and Technology |
| container_volume | 29 |
| creator | Koyama, Daisuke Nakamura, Kentaro Ueha, Sadayuki Takahashi, Hisanori Nukui, Kazumitsu Ikeda, Kenzo |
| description | Here we propose a novel measuring method of the liquid level in a water tank using the flexural vibration in a rod. With changing the water level, the frequency response of the vibrating rod is also changed due to the change of its radiation impedance. The flexural vibration along the rod can be generated by PZT elements attached on the end of the rod. The size of the vibrating rod and PZT elements were determined via the finite element analysis (FEA) so as to maximize the vibration displacement amplitude of the rod. In the FEA model considering the acoustic radiation of the vibrating rod in the cylinder, the frequency responses of the vibrating rod were calculated with changing the water level. The experiments were carried out with several configurations designed by the FEA. By sweeping the driving frequency from 5 to 7 kHz, the frequency characteristics of the vibrating rod could be obtained, and the experimental results showed good agreements with the calculated result by FEA. The frequency responses of the rod with several water levels were measured, and it was found that the water level could be estimated uniquely in the water level range of 0 to 1,550 mm. |
| doi_str_mv | 10.1250/ast.29.274 |
| format | Article |
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With changing the water level, the frequency response of the vibrating rod is also changed due to the change of its radiation impedance. The flexural vibration along the rod can be generated by PZT elements attached on the end of the rod. The size of the vibrating rod and PZT elements were determined via the finite element analysis (FEA) so as to maximize the vibration displacement amplitude of the rod. In the FEA model considering the acoustic radiation of the vibrating rod in the cylinder, the frequency responses of the vibrating rod were calculated with changing the water level. The experiments were carried out with several configurations designed by the FEA. By sweeping the driving frequency from 5 to 7 kHz, the frequency characteristics of the vibrating rod could be obtained, and the experimental results showed good agreements with the calculated result by FEA. The frequency responses of the rod with several water levels were measured, and it was found that the water level could be estimated uniquely in the water level range of 0 to 1,550 mm.</description><identifier>ISSN: 1346-3969</identifier><identifier>EISSN: 1347-5177</identifier><identifier>DOI: 10.1250/ast.29.274</identifier><language>eng</language><publisher>Tokyo: ACOUSTICAL SOCIETY OF JAPAN</publisher><subject>Applied sciences ; Exact sciences and technology ; FEA ; Flexural vibration ; Industrial metrology. Testing ; Liquid level indicator ; Mechanical engineering. Machine design ; Radiation impedance ; Vibrating rod</subject><ispartof>Acoustical Science and Technology, 2008/07/01, Vol.29(4), pp.274-282</ispartof><rights>2008 by The Acoustical Society of Japan</rights><rights>2008 INIST-CNRS</rights><rights>Copyright Japan Science and Technology Agency 2008</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c617t-c98895794b9be0e6186c80fa782020d2a6f774199d57d892c8d6494dc00327563</citedby><cites>FETCH-LOGICAL-c617t-c98895794b9be0e6186c80fa782020d2a6f774199d57d892c8d6494dc00327563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20548716$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Koyama, Daisuke</creatorcontrib><creatorcontrib>Nakamura, Kentaro</creatorcontrib><creatorcontrib>Ueha, Sadayuki</creatorcontrib><creatorcontrib>Takahashi, Hisanori</creatorcontrib><creatorcontrib>Nukui, Kazumitsu</creatorcontrib><creatorcontrib>Ikeda, Kenzo</creatorcontrib><title>A method for measuring liquid level using the flexural vibrations in a rod</title><title>Acoustical Science and Technology</title><addtitle>Acoustical Science and Technology</addtitle><description>Here we propose a novel measuring method of the liquid level in a water tank using the flexural vibration in a rod. With changing the water level, the frequency response of the vibrating rod is also changed due to the change of its radiation impedance. The flexural vibration along the rod can be generated by PZT elements attached on the end of the rod. The size of the vibrating rod and PZT elements were determined via the finite element analysis (FEA) so as to maximize the vibration displacement amplitude of the rod. In the FEA model considering the acoustic radiation of the vibrating rod in the cylinder, the frequency responses of the vibrating rod were calculated with changing the water level. The experiments were carried out with several configurations designed by the FEA. By sweeping the driving frequency from 5 to 7 kHz, the frequency characteristics of the vibrating rod could be obtained, and the experimental results showed good agreements with the calculated result by FEA. The frequency responses of the rod with several water levels were measured, and it was found that the water level could be estimated uniquely in the water level range of 0 to 1,550 mm.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>FEA</subject><subject>Flexural vibration</subject><subject>Industrial metrology. Testing</subject><subject>Liquid level indicator</subject><subject>Mechanical engineering. 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Testing</topic><topic>Liquid level indicator</topic><topic>Mechanical engineering. Machine design</topic><topic>Radiation impedance</topic><topic>Vibrating rod</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Koyama, Daisuke</creatorcontrib><creatorcontrib>Nakamura, Kentaro</creatorcontrib><creatorcontrib>Ueha, Sadayuki</creatorcontrib><creatorcontrib>Takahashi, Hisanori</creatorcontrib><creatorcontrib>Nukui, Kazumitsu</creatorcontrib><creatorcontrib>Ikeda, Kenzo</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Acoustical Science and Technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Koyama, Daisuke</au><au>Nakamura, Kentaro</au><au>Ueha, Sadayuki</au><au>Takahashi, Hisanori</au><au>Nukui, Kazumitsu</au><au>Ikeda, Kenzo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A method for measuring liquid level using the flexural vibrations in a rod</atitle><jtitle>Acoustical Science and Technology</jtitle><addtitle>Acoustical Science and Technology</addtitle><date>2008-01-01</date><risdate>2008</risdate><volume>29</volume><issue>4</issue><spage>274</spage><epage>282</epage><pages>274-282</pages><issn>1346-3969</issn><eissn>1347-5177</eissn><abstract>Here we propose a novel measuring method of the liquid level in a water tank using the flexural vibration in a rod. With changing the water level, the frequency response of the vibrating rod is also changed due to the change of its radiation impedance. The flexural vibration along the rod can be generated by PZT elements attached on the end of the rod. The size of the vibrating rod and PZT elements were determined via the finite element analysis (FEA) so as to maximize the vibration displacement amplitude of the rod. In the FEA model considering the acoustic radiation of the vibrating rod in the cylinder, the frequency responses of the vibrating rod were calculated with changing the water level. The experiments were carried out with several configurations designed by the FEA. By sweeping the driving frequency from 5 to 7 kHz, the frequency characteristics of the vibrating rod could be obtained, and the experimental results showed good agreements with the calculated result by FEA. The frequency responses of the rod with several water levels were measured, and it was found that the water level could be estimated uniquely in the water level range of 0 to 1,550 mm.</abstract><cop>Tokyo</cop><pub>ACOUSTICAL SOCIETY OF JAPAN</pub><doi>10.1250/ast.29.274</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1346-3969 |
| ispartof | Acoustical Science and Technology, 2008/07/01, Vol.29(4), pp.274-282 |
| issn | 1346-3969 1347-5177 |
| language | eng |
| recordid | cdi_proquest_journals_1448263644 |
| source | J-STAGE Free; Freely Accessible Japanese Titles |
| subjects | Applied sciences Exact sciences and technology FEA Flexural vibration Industrial metrology. Testing Liquid level indicator Mechanical engineering. Machine design Radiation impedance Vibrating rod |
| title | A method for measuring liquid level using the flexural vibrations in a rod |
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