JPS5551316A - Liquid level detecting system for solution - Google Patents
Liquid level detecting system for solutionInfo
- Publication number
- JPS5551316A JPS5551316A JP12408578A JP12408578A JPS5551316A JP S5551316 A JPS5551316 A JP S5551316A JP 12408578 A JP12408578 A JP 12408578A JP 12408578 A JP12408578 A JP 12408578A JP S5551316 A JPS5551316 A JP S5551316A
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- camera
- detection
- border
- process part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title abstract 7
- 238000001514 detection method Methods 0.000 abstract 5
- 238000000034 method Methods 0.000 abstract 5
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE:To increase the detection accuracy for the liquid level by distributing the TV camera so that is may give the scanning vertical to the border line between the liquid level and the furnace wall, increasing the number of the scanning lines for the statistic process and then eliminating the noise caused by the slug. CONSTITUTION:TV camera 11 is distributed so that the horizontal scanning line may be vertical to border line 4 between the liquid level and the container wall on the photographing screen. For the video output signal of camera 11, the luminance changing position is detected for the horizontal scanning period of the prescribed region via analog video process part 21, process area detection part 23, digital process part 22 and light-darkness border detection part 24 each, and then the changing position is converted into the dimention valve of the actual liquid level through arithmetic circuit 28 by using the position where the detection frequency of these changing positions exceeded first the prescribed threshold level or the position featuring the maximum frequency among those which exceed the prescribed threshold level as the true liquid level through statistic process part 25. In such way, the detection accuracy can be increased for the liquid level.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12408578A JPS587166B2 (en) | 1978-10-11 | 1978-10-11 | Solution level detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12408578A JPS587166B2 (en) | 1978-10-11 | 1978-10-11 | Solution level detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5551316A true JPS5551316A (en) | 1980-04-15 |
JPS587166B2 JPS587166B2 (en) | 1983-02-08 |
Family
ID=14876550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12408578A Expired JPS587166B2 (en) | 1978-10-11 | 1978-10-11 | Solution level detection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS587166B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008007970A1 (en) * | 2008-02-07 | 2009-08-20 | Siemens Aktiengesellschaft | Method for dosing liquid in liquid tank, involves aligning camera to vertical calibration level, and picture recording of positioned and transparent liquid tank is activated in area of calibration level by aligned camera |
-
1978
- 1978-10-11 JP JP12408578A patent/JPS587166B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008007970A1 (en) * | 2008-02-07 | 2009-08-20 | Siemens Aktiengesellschaft | Method for dosing liquid in liquid tank, involves aligning camera to vertical calibration level, and picture recording of positioned and transparent liquid tank is activated in area of calibration level by aligned camera |
DE102008007970B4 (en) * | 2008-02-07 | 2010-09-02 | Siemens Aktiengesellschaft | Method and device for dosing a liquid in a liquid container |
Also Published As
Publication number | Publication date |
---|---|
JPS587166B2 (en) | 1983-02-08 |
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