CN104991577A - Water tower logic water level controller - Google Patents
Water tower logic water level controller Download PDFInfo
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- CN104991577A CN104991577A CN201510497454.9A CN201510497454A CN104991577A CN 104991577 A CN104991577 A CN 104991577A CN 201510497454 A CN201510497454 A CN 201510497454A CN 104991577 A CN104991577 A CN 104991577A
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Abstract
The invention relates to a water tower logic water level controller which is characterized by comprising a 12V direct current power supply, a water level detection and high threshold inverter circuit and a direct current relay driving and water pump control circuit. Water level control equipment is widely applied to a water storage tank of a small high-rise in a city, namely secondary water supply, and is commonly used for automatic liquid level control or automatic liquid level alarm of a water tower, a water tank, a water groove and the like of industrial and mining enterprises, and controlled media can be clean water or a conducting solution. In order to avoid the liquid overflowing or emptying phenomenon, many water towers still manually control a water pump to pump water, in this way, the requirement for timely water level control is hard to meet, and time and labor are wasted. The water tower logic water level controller opens a new path, adopts a simple circuit for water level control, is low in manufacturing cost, does not need complex circuit adjusting, is flexible and reliable in working and can be used for water level monitoring and control in various occasions.
Description
Technical field
The invention belongs to electronic auto-control technology field, is about a kind of water tower logic water level controller.
Background technology
Water lev el control mainly contains two kinds of modes: a kind of is float switch with a large Metal Ball, and time under water, buoyancy is very large, and it can control two water levels, as: water has been expired, rise because of ball float buoyancy, drive ball valve motion, make valve closing, stop water inlet, when water has lacked, ball float declines, valve open, intake again again, so circulate.This mode is applied on boiler and toilet water-flushing device more; Another kind is the miniature float switch of band tongue tube, by the band of the outside small floating ball that is magnetic, the tongue tube inside bar is closed, thus controlling water level, its majority is applied in clear water water lev el control, but is subject to dirt impact, is not suitable for using on sewage.The second is cable type float switch, and this device is connected with water pump by a flexible cable, and it is mainly used in the automatic control just of water tower, water level in water pool or excessive low water level protection.Majority is directly connected to 220V alternating current, there is certain potential safety hazard, has the danger that there is electric leakage because of cable failure eventually.
Device for controlling water level is widely used in the little high-rise reserve tank in city, that is: secondary water-supply, be also usually used in automatic control of liquid or the liquid level automatic alarms such as the water tower of industrial and mining enterprises, water tank, tank, controlled medium can be clear water or conducting solution.In order to avoid the generation of overflow or flow empty phenomena, many water towers still adopt manual type and control pumping for water pump, and this method is difficult to realize the requirement that water level controls in time, and time-consuming, effort.
There is certain defect in above-mentioned conventional water-level control circuit, water tower logic water level controller of the present invention looks for another way, circuit ease in use carries out water lev el control, have cost of manufacture low, without the need to complicated circuit debugging, work reliably sensitive, can be used for the Inspect and control of various occasion water level.
Below describe in detail water tower logic water level controller of the present invention necessity involved in implementation process, guardian technique content.
Summary of the invention
Goal of the invention and beneficial effect: device for controlling water level is widely used in the little high-rise reserve tank in city, that is: secondary water-supply, also be usually used in automatic control of liquid or the liquid level automatic alarms such as the water tower of industrial and mining enterprises, water tank, tank, controlled medium can be clear water or conducting solution.In order to avoid the generation of overflow or flow empty phenomena, many water towers still adopt manual type and control pumping for water pump, and this method is difficult to realize the requirement that water level controls in time, and time-consuming, effort.There is certain defect in above-mentioned conventional water-level control circuit, water tower logic water level controller of the present invention looks for another way, circuit ease in use carries out water lev el control, have cost of manufacture low, without the need to complicated circuit debugging, work reliably sensitive, can be used for the Inspect and control of various occasion water level.
Circuit working principle: water level can be limited in below check point A, check point more than B by water tower logic water level controller, when water level exceedes check point A, water pump stops drawing water in water tower, and when water level drops to lower than check point B, water pump starts to draw water.Common point C connection circuit ground GND, common point C is placed in the bottommost of water tower.The normally closed contact J-1 of DC relay J is connected in pump motor control loop, directly controls the through and off of water pump, also the normally closed contact J-1 of DC relay J can be connected in ac contactor circuit and control high powered water pump.
1. when water level increases to check point A, the base stage of NPN transistor VT1 is connected with common point C (circuit ground GND) by water resistance, base potential reduces, make NPN transistor VT1, voltage stabilizing diode DW, NPN transistor VT2 be in cut-off state, the collector of NPN transistor VT2 exports high level, the base stage of NPN transistor VT3 is delivered to through voltage stabilizing diode DW, NPN transistor VT3 saturation conduction, DC relay J coil obtains electric adhesive, normally closed contact J-1 is disconnected, and water pump dead electricity quits work;
2. when water level is lower than check point A, because the base stage of NPN transistor VT1 is connected with water resistance by check point B, continue to keep electronegative potential, it is constant that circuit maintains original state, and water pump energising continues to draw water;
3. when water level is lower than check point B, check point B is unsettled, the base stage of NPN transistor VT1 is no longer by the control of water resistance, its base potential raises, NPN transistor VT1, NPN transistor VT2, voltage stabilizing diode DW saturation conduction, and the collector of NPN transistor VT2 becomes low level, NPN transistor VT3 ends, DC relay J dead electricity discharges, and its normally closed contact J-1 closes, and water pump switches on power and starts working;
4. water level starts to rise, when exceeding check point B, base potential due to NPN transistor VT1 pipe no longer examined some B controls, circuit state of remaining stationary is constant, until just start action when water level reaches check point A, circulation like this, remains in certain altitude by the water level in water tower, achieves the automatic control of water pump.
Technical characteristic: water tower logic water level controller, it comprises 12V direct supply, water level detecting and high threshold inverter circuit, DC relay drives and water pump control circuit, it is characterized in that:
Water level detecting and high threshold inverter circuit: it is by water tower, check point A, check point B, common point C, NPN transistor VT1, resistance R1, voltage stabilizing diode DW, resistance R2, NPN transistor VT2 and resistance R3 forms, the base stage of NPN transistor VT1 connects one end of check point A and resistance R1 and the collector of NPN transistor VT2, the other end connection circuit positive pole VCC of resistance R1, the emitter of NPN transistor VT2 meets check point B, the collector of NPN transistor VT1 is by resistance R2 connection circuit positive pole VCC, the emitter of NPN transistor VT1 connects the negative pole of voltage stabilizing diode DW, the positive pole of voltage stabilizing diode DW connects the base stage of NPN transistor VT3, common point C is placed in the bottom of water tower,
DC relay drives and water pump control circuit: it is by resistance R3, NPN transistor VT3, DC relay J and silicon rectifier diode D1 forms, the collector of NPN transistor VT3 connects one end of DC relay J coil and the positive pole of silicon rectifier diode D1, the other end of DC relay J coil and the negative pole connection circuit positive pole VCC of silicon rectifier diode D1, the base stage of NPN transistor VT2 connects the collector of NPN transistor VT3 by resistance R3, the emitter connection circuit ground GND of NPN transistor VT3, the normally closed contact J-1 water pump motor control loop of DC relay J,
The positive pole connection circuit positive pole VCC of 12V DC voltage-stabilizing, the negative pole connection circuit ground GND of 12V DC voltage-stabilizing.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment circuit working schematic diagram that the invention provides a water tower logic water level controller.
Embodiment
According to the water tower logic water level controller circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in summary of the invention, and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement
VT1, VT2 are NPN transistor, they and voltage stabilizing diode DW and peripheral cell form high threshold phase inverter, object improves the threshold voltage of phase inverter, ensure that circuit can not occur misoperation because of external interference, the model selected is 2SC9013 or 3DG12 etc., requires current amplification factor β > 100;
VT3 is NPN transistor, requires enlargement factor β value β > 180, to improve driving sensitivity;
DW is voltage stabilizing diode, requires the voltage stabilizing value 7.5 ~ 8V of voltage stabilizing diode, power is 1W;
D1 is silicon rectifier diode, it is the protection diode of driving tube NPN transistor VT3, and in driving tube cut-off moment, it provides for DC relay J coil produces inverse electromotive force path of releasing, protection driving tube VNPN transistor npn npn VT3 can not be breakdown, and the model selected is 1N4001;
Resistance all selects 1/4W metalfilmresistor, resistance R1, resistance R2 are the biasing resistors of NPN transistor VT1, NPN transistor VT2, to ensure during selection NPN transistor VT1, voltage stabilizing diode DW, NPN transistor VT2 can reliably saturated or cut-off, calculate according to existence conditions (DW=7.5V, VCC=12V), resistance can calculate by formula R water/2≤R1≤β lR2 and R2≤l/3 β 2R3, water resistance R water=7K Ω-30K Ω, it is 30K Ω that resistance R1 and resistance R2 chooses maximal value;
Resistance R3 is NPN transistor VT3 current-limiting resistance, selected value≤10K Ω, and recommendation is 8.2K Ω;
J is 12V DC relay, and it has 5 pins, and the coil of DC relay J has 2 pins, 3 pins of its power stage respectively: the common (moving contact) of relay J, stationary contact are divided into normally closed contact J-1 and normally opened contact J-2;
DC is 12V direct supply, can select 12V D.C. regulated power supply, requires output current >=300mA.
Circuit production main points and circuit debugging
1. the making of detecting electrode: check point A is peak level exploring electrode, check point B is lowest water level exploring electrode.Water level detecting point A, check point B, common point C all make by the ￠ 2.0mm single strand of copper wire peelling off rubber, are fixed on the appropriate location of water tower with insulating material.Requirement check point A, check point B and common point C lean on closer mutually, but 3 detecting electrodes can not contact each other, and require that 3 detecting electrode drainings are effective, otherwise affect the reliability of circuit working;
The height of 2.3 detecting electrode installations should be determined, according to actual needs with adjust operation to peak level, lowest water level all reach technical requirement;
3. the circuit structure because of water tower logic water level controller is fairly simple, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present invention does not need debugging normally to work substantially.
Circuit structure design of the present invention, components' placement; and the shape of its outward appearance and size etc. are not all gordian techniquies of the present invention; neither application claims protection guardian technique content; because not affecting the realization of specific implementation process of the present invention and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
1. a water tower logic water level controller, it comprises 12V direct supply, water level detecting and high threshold inverter circuit, DC relay drives and water pump control circuit, it is characterized in that:
Described water level detecting and high threshold inverter circuit are by water tower, check point A, check point B, common point C, NPN transistor VT1, resistance R1, voltage stabilizing diode DW, resistance R2, NPN transistor VT2 and resistance R3 forms, the voltage stabilizing value of requirement voltage stabilizing diode DW is 7.5 ~ 8V, the base stage of NPN transistor VT1 connects one end of check point A and resistance R1 and the collector of NPN transistor VT2, the other end connection circuit positive pole VCC of resistance R1, the emitter of NPN transistor VT2 meets check point B, the collector of NPN transistor VT1 is by resistance R2 connection circuit positive pole VCC, the emitter of NPN transistor VT1 connects the negative pole of voltage stabilizing diode DW, the positive pole of voltage stabilizing diode DW connects the base stage of NPN transistor VT3, common point C is placed in the bottom of water tower,
Described DC relay driving and water pump control circuit are by resistance R3, NPN transistor VT3, DC relay J and silicon rectifier diode D1 forms, the collector of NPN transistor VT3 connects one end of DC relay J coil and the positive pole of silicon rectifier diode D1, the other end of DC relay J coil and the negative pole connection circuit positive pole VCC of silicon rectifier diode D1, the base stage of NPN transistor VT2 connects the collector of NPN transistor VT3 by resistance R3, the emitter connection circuit ground GND of NPN transistor VT3, the normally closed contact J-1 water pump motor control loop of DC relay J,
The positive pole connection circuit positive pole VCC of described 12V DC voltage-stabilizing, the negative pole connection circuit ground GND of 12V DC voltage-stabilizing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497454.9A CN104991577A (en) | 2015-08-13 | 2015-08-13 | Water tower logic water level controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510497454.9A CN104991577A (en) | 2015-08-13 | 2015-08-13 | Water tower logic water level controller |
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| CN104991577A true CN104991577A (en) | 2015-10-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051528A (en) * | 2016-06-27 | 2016-10-26 | 重庆信德电子有限公司 | Table lamp capable of automatically brewing beverage |
| CN106122827A (en) * | 2016-06-27 | 2016-11-16 | 重庆信德电子有限公司 | There is the method for work of the desk lamp of automatic coffee making beverage function |
| CN107515626A (en) * | 2016-06-17 | 2017-12-26 | 湖南科技学院 | One kind is drawn water automatic control circuit |
| CN108052132A (en) * | 2018-02-05 | 2018-05-18 | 芜湖环球汽车配件有限公司 | A kind of intelligent and high-efficiency pump energy saving control circuit |
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| CN2371231Y (en) * | 1999-03-02 | 2000-03-29 | 江彦 | Electric contact type water level auto-controller for pump |
| CN2570836Y (en) * | 2002-06-26 | 2003-09-03 | 郑银辉 | Automatic water level controller |
| US20050062611A1 (en) * | 2003-09-08 | 2005-03-24 | Steve Johnson | Auto shutoff overflow controller |
| CN103927918A (en) * | 2014-05-14 | 2014-07-16 | 雷建设 | Automatic water pumping demonstrator controlled by triode |
| CN104460709A (en) * | 2013-09-18 | 2015-03-25 | 成都天宇创新科技有限公司 | Agricultural automatic water supply device |
| CN204965206U (en) * | 2015-08-13 | 2016-01-13 | 王志 | Water tower logic water level controller |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371231Y (en) * | 1999-03-02 | 2000-03-29 | 江彦 | Electric contact type water level auto-controller for pump |
| CN2570836Y (en) * | 2002-06-26 | 2003-09-03 | 郑银辉 | Automatic water level controller |
| US20050062611A1 (en) * | 2003-09-08 | 2005-03-24 | Steve Johnson | Auto shutoff overflow controller |
| CN104460709A (en) * | 2013-09-18 | 2015-03-25 | 成都天宇创新科技有限公司 | Agricultural automatic water supply device |
| CN103927918A (en) * | 2014-05-14 | 2014-07-16 | 雷建设 | Automatic water pumping demonstrator controlled by triode |
| CN204965206U (en) * | 2015-08-13 | 2016-01-13 | 王志 | Water tower logic water level controller |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515626A (en) * | 2016-06-17 | 2017-12-26 | 湖南科技学院 | One kind is drawn water automatic control circuit |
| CN106051528A (en) * | 2016-06-27 | 2016-10-26 | 重庆信德电子有限公司 | Table lamp capable of automatically brewing beverage |
| CN106122827A (en) * | 2016-06-27 | 2016-11-16 | 重庆信德电子有限公司 | There is the method for work of the desk lamp of automatic coffee making beverage function |
| CN108052132A (en) * | 2018-02-05 | 2018-05-18 | 芜湖环球汽车配件有限公司 | A kind of intelligent and high-efficiency pump energy saving control circuit |
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