CN101949725A - New liquid angular position sensor and water level measuring method - Google Patents
New liquid angular position sensor and water level measuring method Download PDFInfo
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- CN101949725A CN101949725A CN 201010501283 CN201010501283A CN101949725A CN 101949725 A CN101949725 A CN 101949725A CN 201010501283 CN201010501283 CN 201010501283 CN 201010501283 A CN201010501283 A CN 201010501283A CN 101949725 A CN101949725 A CN 101949725A
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Abstract
The invention relates to a new liquid position sensor and a water level measuring method. The sensor is characterized in that a liquid switch is arranged in the position in which water is originally used as a medium for conducting; a certain conduction angle is set between the sensor and the liquid switch; the switching action of the liquid switch is used for changing the water which is originally used as the conducting medium into the liquid switch which can not be electrolyzed; and the liquid switch is arranged in a sealed floater shell, is encapsulated by sealing gum and is not in contact with the water, thereby avoiding the occurrence of false water level conditions caused by scale formation and different water quality in different regions. The measuring method comprises the following steps: setting a certain conduction angle between the sensor and the liquid switch so that the angle is changed when the sensor moves, and conducting the water level to be measured, thereby accurately measuring the water level to be measured. The sensor of the invention has the advantages of small volume, integration, good stability and cheap price, can be used for measuring data accurately, can not be influenced by any water quality, and is suitable for civil popularization.
Description
Technical field
The present invention relates to a kind of sensor, particularly the level sensor of domestic solar hot-water heating system.
Background technology
Automatically controlling in the industry at present, the instrument and equipment of intelligent measure water level is more, for example pressure type sensor, dry-reed sensor, Hall switch formula, electric pole type etc.But the many shortcomings of ubiquity are planted because fouling, non-refractory, not low temperature resistant, reason such as cost an arm and a leg etc. are not almost controlled industry at the family expenses solar water heating system automatically as first three and to be used.It is electrode sensor that present domestic solar hot-water heating system is controlled industry ubiquitous automatically, there is following defective in this type of sensor: first, electrode sensor because water as medium, conductings such as public electrode and electrode 1,2,3,4 are to carry out conducting by water as dielectric resistance, so water quality different resistance in various places are just different, be easy to cause measurement inaccurate, thereby the phenomenon of artifical water height occurs.The anhydrous water that shows causes long-time electrical heating.There is the full demonstration of the water of being exactly to be discontented with again and causes current more than, waste water resource.The second, the sensor easy fouling of working in water for a long time causes resistance value to change after the fouling and then sensitivity reduces.Even begin to install no problem but along with fouling can go wrong again.The 3rd, electrode sensor is owing to the electric pole type principle of using, because the electrode energising work in water for a long time of electrode sensor, so the easy electrolytic corrosion of electrode, thus finally rot, reduce serviceable life.
Summary of the invention
The object of the present invention is to provide a kind of new liquid position transducer and water level measurement method, measure inaccurately to solve prior art, sensitivity is low, the easy electrolytic corrosion of electrode, problem such as serviceable life is short.
The present invention mainly is made of four parts such as electronic devices and components, float, single-chip microcomputers, solving the technical scheme that its technical matters adopts is as the position that medium carries out conducting liquid switch to be set at former water, utilize the effect of liquid switch, change original water into liquid switch that electrolysis does not take place as conducting medium, sensor and liquid switch are set certain conduction angle, liquid switch places in the float housing of sealing, and the fluid sealant embedding does not contact with water.All liquid switches all are in off-state when accident water gaging position, when measuring first water level, and the conducting of S1 liquid switch; S1, S2 conducting simultaneously when measuring second water level; S1, S2, S3 conducting simultaneously when measuring the 3rd water level; S1, S2, S3, S4 conducting simultaneously when measuring the 3rd water level; By that analogy.And liquid switch is placed the environment of sealing.
Its measuring method is that sensor and liquid switch are provided with certain conduction angle, and its angle when being subjected to displacement is changed, and carries out conducting at the water level that will measure, when being in vertical down position 12, and all not conductings of liquid switch; When being in position 13, liquid switch 1 conducting shows first water level; When being in position 14, liquid switch 1,2 conductings show the twoth water level; When being in position 15, liquid switch 1,2,3 conductings show the 3rd water level; When being in position 16, liquid switch 1,2,3,4 conductings show the 4th water level; By that analogy, thus measure the water level that will detect accurately.
Adopting good effect of the present invention is the influence that described sensor bulk is little, integrated, measurement data accurately is not subjected to any water quality, and while good stability, low price are applicable to civilian generally popularization.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples:
Accompanying drawing 1 is liquid position sensor circuit structural representation of the present invention;
Among the figure: it is that 0 conduction angle, 13 floats, 1 water level position are ω that 1 liquid switch S1,2 liquid switch S2,3 liquid switch S3,4 liquid switch S4,5 resistance R, 1,6 resistance R, 2,7 resistance R, 3,8 resistance R, 4,9 diode D1,10 single-chip microcomputers, 11 floats, 12 floats do not have the water level position
1Conduction angle, 14 floats, 2 water level positions are ω
2Conduction angle, 15 floats, 3 water level positions are ω
3Conduction angle, 16 floats, 4 water level positions are ω
4Conduction angle.
Embodiment
Embodiments of the invention with reference to the accompanying drawings 1 and accompanying drawing 2 be described.
As shown in the figure, be as the position that medium carries out conducting liquid switch 1,2,3,4 to be set at former water, utilize the effect of liquid switch 1,2,3,4, change original water into liquid switch that electrolysis does not take place as conducting medium, sensor and liquid switch 1,2,3,4 are set certain conduction angle, liquid switch 1,2,3,4 places in float 11 housings of sealing, and the fluid sealant embedding does not contact with water.Four liquid switches 1,2,3,4 in device the inside of sealing are set the angle of each switch according to the computing formula of top angle, thereby the water level of measuring from low to high, the quantity of switch is by the water level value decision of measuring, if no liquid switch closure during upright position when float 11 is in 12 positions; If float 11 is in 13 positions 1 conducting of 1 liquid switch just is set; If float 11 is in 14 positions liquid switch 1,2 conductings just are set; If float 11 is in 15 positions liquid switch 1,2,3 conductings just are set; If float 11 is in 16 positions liquid switch 1,2,3,4 conductings just are set; And calculate conduction angle according to formula.Just put five liquid switches if measure five water levels, calculate conduction angle.Liquid switch conducting when arrival is provided with water level, thus signal is exported, calculate the present water level of demonstration by single-chip microcomputer.
Wherein liquid switch 1,2,3,4 is placed on the centre position of float 11 respectively, calculates conduction angle (0 ~ 180 degree) according to formula, from bottom to up, is followed successively by liquid switch 1,2,3,4.Liquid switch 1 links to each other with resistance 5 two ends; Liquid switch 2 links to each other with resistance 6 two ends; Liquid 3 switches link to each other with resistance 7 two ends; Liquid switch 4 links to each other with resistance 8 two ends; Just having during each liquid switch conducting corresponding resistance to be made resistance by short circuit like this is 0.
The derivation of equation: the overall height of setting water tank is H, the height of remaining space is h behind the last water of water tank, utilize formula: cos α=h/H, because being known quantity, H, h can calculate the angle that will tilt, simultaneously know that again the conduction angle of liquid switch is β, total so be exactly measure water level conduction angle ω=alpha+beta, the water level that will measure of sensor just is converted into that angle is measured has come out like this.
During work, normal signal is gone out by single-chip microcomputer one human hair combing waste, arrives another pin through resistance and receives.The effect of liquid switch is exactly the resistance that reduces resistance, and shorten the switching time that makes single-chip microcomputer detect the high-low level of pin position.Pass through the further processing signals of single-chip microcomputer again, thereby water level what are judged.
Claims (3)
1. new liquid angular position sensor, mainly form by electronic devices and components, float, single-chip microcomputer, it is characterized in that as the position that medium carries out conducting liquid switch being set at former water, utilize the effect of liquid switch, change original water into liquid switch that electrolysis does not take place as conducting medium, sensor and liquid switch are set certain conduction angle, liquid switch places in the float housing of sealing, the fluid sealant embedding does not contact with water.
2. new liquid angular position sensor water level measurement method, it is characterized in that measuring method is that sensor and liquid switch are set certain conduction angle, its angle when being subjected to displacement is changed, carry out conducting, thereby measure the water level that will detect accurately at the water level that will measure.
3. new liquid angular position sensor water level measurement method according to claim 2 is characterized in that when sensor places vertical down position 12 all not conductings of liquid switch; When placing position 13, liquid switch 1 conducting shows first water level; When placing position 14, liquid switch 1,2 conductings show second water level; When placing position 15, liquid switch 1,2,3 conductings show the 3rd water level; When placing position 16, liquid switch 1,2,3,4 conductings show the 4th water level; By that analogy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501283 CN101949725A (en) | 2010-10-09 | 2010-10-09 | New liquid angular position sensor and water level measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501283 CN101949725A (en) | 2010-10-09 | 2010-10-09 | New liquid angular position sensor and water level measuring method |
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| CN101949725A true CN101949725A (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010501283 Pending CN101949725A (en) | 2010-10-09 | 2010-10-09 | New liquid angular position sensor and water level measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679313A (en) * | 2012-05-18 | 2012-09-19 | 南通市利浪节能电器有限公司 | False water level identification protection control system of electric heating steam generator |
| CN109357612A (en) * | 2018-11-21 | 2019-02-19 | 中国科学院合肥物质科学研究院 | One kind being used for static liquid level capacitance displacement sensor on-line calibration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945913A (en) * | 1995-12-26 | 1999-08-31 | Gallagher; Daniel J. | Liquid level alarm system |
| CN201145601Y (en) * | 2007-09-29 | 2008-11-05 | 中国兵器工业集团第五三研究所 | Non-contact type water level transducer |
| CN201156490Y (en) * | 2008-01-24 | 2008-11-26 | 刘晓寒 | Liquid level switch |
| CN201218744Y (en) * | 2008-02-27 | 2009-04-08 | 中国兵器工业集团第五三研究所 | Non-contact type water level transducer |
| CN201535701U (en) * | 2009-03-26 | 2010-07-28 | 徐瑞明 | Multipoint suspended water level and water temperature sensor |
-
2010
- 2010-10-09 CN CN 201010501283 patent/CN101949725A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945913A (en) * | 1995-12-26 | 1999-08-31 | Gallagher; Daniel J. | Liquid level alarm system |
| CN201145601Y (en) * | 2007-09-29 | 2008-11-05 | 中国兵器工业集团第五三研究所 | Non-contact type water level transducer |
| CN201156490Y (en) * | 2008-01-24 | 2008-11-26 | 刘晓寒 | Liquid level switch |
| CN201218744Y (en) * | 2008-02-27 | 2009-04-08 | 中国兵器工业集团第五三研究所 | Non-contact type water level transducer |
| CN201535701U (en) * | 2009-03-26 | 2010-07-28 | 徐瑞明 | Multipoint suspended water level and water temperature sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679313A (en) * | 2012-05-18 | 2012-09-19 | 南通市利浪节能电器有限公司 | False water level identification protection control system of electric heating steam generator |
| CN102679313B (en) * | 2012-05-18 | 2013-11-27 | 南通市利浪节能电器有限公司 | False water level identification protection control system of electric heating steam generator |
| CN109357612A (en) * | 2018-11-21 | 2019-02-19 | 中国科学院合肥物质科学研究院 | One kind being used for static liquid level capacitance displacement sensor on-line calibration method |
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Application publication date: 20110119 |