CN102478857A - Water level controller - Google Patents
Water level controller Download PDFInfo
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- CN102478857A CN102478857A CN2010105617940A CN201010561794A CN102478857A CN 102478857 A CN102478857 A CN 102478857A CN 2010105617940 A CN2010105617940 A CN 2010105617940A CN 201010561794 A CN201010561794 A CN 201010561794A CN 102478857 A CN102478857 A CN 102478857A
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- level controller
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Abstract
The invention discloses a water level controller, which comprises an NE 555, a high-level detection line, a medium-level detection line, a low-level detection line and a relay, wherein the high-level detection line, the medium-level detection line and the low-level detection line are connected with the NE555, and the relay is used for controlling a power source of a water pump. The water level controller not only overcomes defects of a conventional float type water level controller but is capable of maintaining water level, is provided with a simple circuit, is reliable in performance, and can be directly installed onto a water tower or toilet to control water level automatically.
Description
Technical field
The present invention relates to a kind of liquid level automatic control device, relate in particular to a kind of water level controller.
Background technology
The water tower or the elevated tank that supply water for industrial and agricultural production and resident living all are to realize automatic water-supply through water level automatic control device basically.The water level controller that uses at present, wherein a kind of is float-ball type.Floating ball type water level controller mainly is made up of ball float, nylon rope, pulley, balancing weight, support, spacing shelves, connecting rod and travel switch; Be to lean on ball float along with the up-down of water level comes control water level; Its main deficiency is: winter weather cold, and make nylon rope and pulley, spacing shelves etc. locate to freeze, nylon rope can not slide on pulley along with ball float and balancing weight; Make spacing shelves not touch limit switch, cause malfunctioning by former design idea.In addition, summer weather is hot, because travel switch is installed in water surface top in the water tank, water vapour corrodes travel switch, causes the travel switch short circuit, causes control device out of control.The float-ball type control device also can cause out of control because of the mechanical drive fault sometimes.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of circuit, and dependable performance can overcome the electrode mode level controller of above-mentioned floating ball type water level controller shortcoming.
For achieving the above object, the present invention adopts following technical scheme:
A kind of water level controller, said water level controller comprises: NE555, the high water stage that links to each other with NE555 survey line, mid water levels is surveyed line, low-water level detection line, in order to the relay of control pump power; Wherein:
Said NE555 connects into schmidt trigger circuit; Said low-water level is surveyed the 6th pin that line is connected to said NE555; Said mid water levels is surveyed line and is connected to the 8th pin of said NE555 through first diode, and said high water stage is surveyed the 8th pin that line is connected to said NE555, and the 8th pin of NE555 links to each other with an end of relay and the output terminal of rectification circuit through first resistance; Oppositely be connected in series second diode between the 8th pin of said NE555 and the earth point; The 3rd pin of said NE555 links to each other with the base stage of triode, and the other end of said relay is connected to the emitter-base bandgap grading of said triode, the grounded collector of said triode.
Further, the 3rd pin of said NE555 links to each other with the base stage of said triode with light emitting diode through second resistance.
Further, the output terminal of said rectification circuit is through first capacity earth.
Further, the 8th pin of said NE555 is through second capacity earth.
Further, the 8th pin of said NE555 is through second capacity earth.
Further, said relay parallel connection the 3rd diode.
Further, said high water stage is surveyed between line and the said low-water level detection line and is parallel with the 3rd electric capacity.
Further, said high water stage detection line, mid water levels are surveyed line, low-water level detection line is the rubber aluminum steel.
Water level controller provided by the invention, when decline of water table was lower than low-water level detection line, the distal point of low-water level detection line was unsettled.NE555 exports high level, and relay gets electric adhesive, starts irrigating unit, and water level rises gradually.When water level rose to distal point that high water stage surveys line and mid water levels and surveys between the distal point of line, the original state of trigger maintenance was constant.When water level rises to the distal point of high water stage detection line, the NE555 output low level, the relay outage, irrigating unit quits work.When overcoming traditional floating ball type water level controller shortcoming, also can reach the purpose that water level keeps, and circuit is simple, dependable performance like this.
Description of drawings
Fig. 1 is the circuit diagram of a kind of preferred embodiment of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, a kind of water level controller provided by the present invention comprises: NE555, the high water stage that links to each other with NE555 survey line A, mid water levels is surveyed line B, low-water level detection line C, in order to the relay of control pump power; Wherein:
Said NE555 connects into schmidt trigger circuit; Said low-water level is surveyed the 6th pin that line C is connected to said NE555; Said mid water levels is surveyed line B and is connected to the 8th pin of said NE555 through diode D1, and said high water stage is surveyed the 8th pin that line A is connected to said NE555, and the 8th pin of NE555 links to each other with an end of relay J and the output terminal of rectification circuit through first resistance; Oppositely be connected in series the D2 diode between the 8th pin of said NE555 and the earth point; The 3rd pin of said NE555 links to each other with the base stage of triode VT, and the other end of relay J is connected to the emitter-base bandgap grading of triode VT, the grounded collector of triode VT.
The 3rd pin of NE555 can also link to each other with the base stage of LED with triode VT through a resistance.The output terminal of rectification circuit is through a capacity earth.The 8th pin of NE555 is through another capacity earth.Relay J can a parallelly connected diode.High water stage is surveyed between line A and the low-water level detection line C and is parallel with the 3rd electric C1.
High water stage detection line A, mid water levels are surveyed line B, low-water level is surveyed line C and can be processed by the rubber aluminum steel.The end that the water-level detecting line probes in the water can be electrode.
When decline of water table was lower than the C point, the C point was unsettled.The 2nd pin of NE555 is lower than 1/3Vcc, its 3rd pin output high level, and relay J gets electric adhesive, starts water pump and draws water, and water level rises gradually.
When water level rises to the A point between the B point time, resistance R 4 is gone into circuit by serial connection, this moment P point control of Electric potentials about 1/2Vcc, the original state of trigger maintenance is constant.
When water level rose to the A point, because water resistance is less, P point current potential was higher than 2/3Vcc, the 3rd pin output low level of NE555, and the relay outage, water pump stops pumping.Can reach the purpose of drawing water automatically like this.
In sum, water level controller circuit provided by the present invention is simple, makes easy, dependable performance, can directly be used to be installed in water tower, toilet etc., automatically control water level.
The above is merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (7)
1. a water level controller is characterized in that,
Said water level controller comprises: NE555, the high water stage that links to each other with NE555 survey line, mid water levels is surveyed line, low-water level detection line, in order to the relay of control pump power; Wherein:
Said NE555 connects into schmidt trigger circuit; Said low-water level is surveyed the 6th pin that line is connected to said NE555; Said mid water levels is surveyed line and is connected to the 8th pin of said NE555 through first diode, and said high water stage is surveyed the 8th pin that line is connected to said NE555, and the 8th pin of NE555 links to each other with an end of relay and the output terminal of rectification circuit through first resistance; Oppositely be connected in series second diode between the 8th pin of said NE555 and the earth point; The 3rd pin of said NE555 links to each other with the base stage of triode, and the other end of said relay is connected to the emitter-base bandgap grading of said triode, the grounded collector of said triode.
2. water level controller according to claim 1 is characterized in that, the 3rd pin of said NE555 links to each other with the base stage of said triode with light emitting diode through second resistance.
3. water level controller according to claim 1 is characterized in that, the output terminal of said rectification circuit is through first capacity earth.
4. water level controller according to claim 1 is characterized in that, the 8th pin of said NE555 is through second capacity earth.
5. water level controller according to claim 1 is characterized in that, said relay parallel connection the 3rd diode.
6. water level controller according to claim 1 is characterized in that, said high water stage is surveyed between line and the said low-water level detection line and is parallel with the 3rd electric capacity.
7. water level controller according to claim 1 is characterized in that, said high water stage detection line, mid water levels are surveyed line, low-water level detection line is the rubber aluminum steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105617940A CN102478857A (en) | 2010-11-26 | 2010-11-26 | Water level controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105617940A CN102478857A (en) | 2010-11-26 | 2010-11-26 | Water level controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102478857A true CN102478857A (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105617940A Pending CN102478857A (en) | 2010-11-26 | 2010-11-26 | Water level controller |
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| CN (1) | CN102478857A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495643A (en) * | 2011-12-05 | 2012-06-13 | 合肥美的荣事达电冰箱有限公司 | Liquid level controller for water tank and ice making device |
| CN103576709A (en) * | 2013-11-09 | 2014-02-12 | 安徽神剑新材料股份有限公司 | Automatic water feeding device for QUV accelerated aging instrument |
| CN104881051A (en) * | 2015-06-18 | 2015-09-02 | 河海大学 | Self-elevating irrigation water volume accurate metering and control device |
| CN111441933A (en) * | 2020-04-14 | 2020-07-24 | 朱书林 | Automatic control system and control method for water pump |
-
2010
- 2010-11-26 CN CN2010105617940A patent/CN102478857A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495643A (en) * | 2011-12-05 | 2012-06-13 | 合肥美的荣事达电冰箱有限公司 | Liquid level controller for water tank and ice making device |
| CN102495643B (en) * | 2011-12-05 | 2014-12-17 | 合肥美的电冰箱有限公司 | Liquid level controller for water tank and ice making device |
| CN103576709A (en) * | 2013-11-09 | 2014-02-12 | 安徽神剑新材料股份有限公司 | Automatic water feeding device for QUV accelerated aging instrument |
| CN104881051A (en) * | 2015-06-18 | 2015-09-02 | 河海大学 | Self-elevating irrigation water volume accurate metering and control device |
| CN111441933A (en) * | 2020-04-14 | 2020-07-24 | 朱书林 | Automatic control system and control method for water pump |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |