JP2011095213A5 - - Google Patents

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Publication number
JP2011095213A5
JP2011095213A5 JP2009251966A JP2009251966A JP2011095213A5 JP 2011095213 A5 JP2011095213 A5 JP 2011095213A5 JP 2009251966 A JP2009251966 A JP 2009251966A JP 2009251966 A JP2009251966 A JP 2009251966A JP 2011095213 A5 JP2011095213 A5 JP 2011095213A5
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Japan
Prior art keywords
recess
liquid
radius
stored
volume
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JP2009251966A
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Japanese (ja)
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JP5402534B2 (en
JP2011095213A (en
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Priority claimed from JP2009251966A external-priority patent/JP5402534B2/en
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Publication of JP2011095213A5 publication Critical patent/JP2011095213A5/ja
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図4に、凹部40aの拡大図を示す。凹部40aは、上部開口面の半径がR、凹部40aの底部から上部開口面までの高さがHである円錐状の容器である。これらR、Hの値は予め求められている。
今、凹部40aに貯留された液体の上面(液面)の半径をrとすると、その時点での凹部40aの底面から液面までの高さhは、次の式(1)で表される。
=r/R ×H ・・・・(1)
よって、その時点での底部から液面までの容積V1は次の式(2)で表される。
=πr /3=πr /R ×H /3 ・・・(2)
このように、CCDカメラ16で取り込んだ液面の画像から半径rが求められれば、凹部40a内に貯留された液体の容積を算出することができる。液面の半径rと凹部40a内に貯留された液滴の容積Vとの関係を表す式(2)は演算部51に予め記憶されている。
FIG. 4 shows an enlarged view of the recess 40a. The recess 40a is a conical container in which the radius of the upper opening surface is R 0 and the height from the bottom of the recess 40a to the upper opening surface is H 0 . The values of R 0 and H 0 are obtained in advance.
Table Now, when the radius of the upper surface of the liquid stored in the recess 40a (liquid surface) and r 1, height h 1 from the bottom surface of the recess 40a at that time to the liquid surface is the following equation (1) Is done.
h 1 = r 1 / R 0 × H 0 ... (1)
Therefore, the volume V1 from the bottom to the liquid level at that time is expressed by the following equation (2).
V 1 = πr 1 2 h 1 /3 = πr 1 3 / R 0 × H 0/3 ··· (2)
In this way, if the radius r 1 is obtained from the liquid level image captured by the CCD camera 16, the volume of the liquid stored in the recess 40a can be calculated. Expression (2) representing the relationship between the radius r 1 of the liquid level and the volume V 1 of the droplet stored in the recess 40 a is stored in advance in the calculation unit 51.

JP2009251966A 2009-11-02 2009-11-02 Liquid dispensing device Active JP5402534B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009251966A JP5402534B2 (en) 2009-11-02 2009-11-02 Liquid dispensing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009251966A JP5402534B2 (en) 2009-11-02 2009-11-02 Liquid dispensing device

Publications (3)

Publication Number Publication Date
JP2011095213A JP2011095213A (en) 2011-05-12
JP2011095213A5 true JP2011095213A5 (en) 2012-07-12
JP5402534B2 JP5402534B2 (en) 2014-01-29

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ID=44112271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009251966A Active JP5402534B2 (en) 2009-11-02 2009-11-02 Liquid dispensing device

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JP (1) JP5402534B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212976B2 (en) * 2013-03-15 2015-12-15 Qiagen Gaithersburg, Inc. Vision-guided aspiration apparatus and methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58100713A (en) * 1981-12-12 1983-06-15 Sumitomo Heavy Ind Ltd Method and device for level measurement
JPH10132641A (en) * 1996-10-31 1998-05-22 Tosok Corp Method for inspecting amount of liquid
JPH10332459A (en) * 1997-05-30 1998-12-18 Olympus Optical Co Ltd Liquid level detecting method
JP4062203B2 (en) * 2003-07-30 2008-03-19 株式会社島津製作所 Quantitative dispensing method and dispensing apparatus using dispensing unit
JP2007198751A (en) * 2006-01-23 2007-08-09 Olympus Corp Dispensing system, analyzer and dispensing method
JP2007298445A (en) * 2006-05-01 2007-11-15 Olympus Corp Liquid level detector
JP2009156793A (en) * 2007-12-27 2009-07-16 Olympus Corp Autoanalyzer
JP5132396B2 (en) * 2008-04-03 2013-01-30 ローム株式会社 Microchip

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