发明名称 |
ELECTRODE-TYPE LIQUID LEVEL DETECTION DEVICE AND ELECTRODE-TYPE LIQUID LEVEL DETECTION METHOD |
摘要 |
An electrode-type liquid level detection device comprises: an electrode unit in which at least two liquid level measurement electrodes, which are used to detect a liquid level, and a calibration electrode, which is not used to detect the liquid level, are integrated; a record unit that records a pre-use resistance value of each electrode of the electrode unit as initial resistance value; a calculation unit that calculates a resistance value of a to-be-measured object based on the initial resistance value; and a control unit that controls in such a way as to adjust a threshold value for determining whether or not the to-be-measured object exists, based on a change in resistance values of the at least two liquid level measurement electrodes when in use. Therefore, the liquid level can be accurately detected corresponding to deterioration of the instrument. |
申请公布号 |
US2016290851(A1) |
申请公布日期 |
2016.10.06 |
申请号 |
US201415037589 |
申请日期 |
2014.11.27 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
TSURUTA Satoru;KAGIFUKU Tatsuo;KOHYAMA Isao |
分类号 |
G01F25/00;G01F23/24 |
主分类号 |
G01F25/00 |
代理机构 |
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代理人 |
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主权项 |
1. An electrode-type liquid level detection device comprising:
an electrode unit in which at least two liquid level measurement electrodes, which are used to detect a liquid level, and a calibration electrode, which is not used to detect the liquid level, are integrated; a record unit that records a pre-use resistance value of each electrode of the electrode unit as initial resistance value; a calculation unit that calculates a resistance value of a to-be-measured object based on the initial resistance value; and a control unit that controls in such a way as to adjust a threshold value for determining whether or not the to-be-measured object exists, based on a change in resistance values of the at least two liquid level measurement electrodes when in use. |
地址 |
Minato-ku, Tokyo JP |