CN204827960U - Control circuit of water pump - Google Patents
Control circuit of water pump Download PDFInfo
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- CN204827960U CN204827960U CN201520512129.0U CN201520512129U CN204827960U CN 204827960 U CN204827960 U CN 204827960U CN 201520512129 U CN201520512129 U CN 201520512129U CN 204827960 U CN204827960 U CN 204827960U
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- water pump
- detection circuit
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a control circuit of water pump contains MCU circuit, voltage stabilizing circuit, voltage stabilizing circuit supplies power to the MCU circuit, the MCU circuit sends the high frequency impulse to high water level detection circuit and low water level detection circuit, and high water level detection circuit and low water level detection circuit feed back to the MCU circuit with the water level information who surveys, when high water level detection circuit detects the water level and is higher than the default, the MCU circuit comes starting working of control pump through silicon controlled rectifier switch circuit, when low water level detection circuit detects the water level and is less than the default, the MCU circuit comes the stop work of control pump through silicon controlled rectifier switch circuit, control circuit of water pump preparation convenient, the cost is lower, and the electrode life of its control can prolong greatly, the utility model discloses still accessible current detection circuit detect the water pump draw water electric current and MCU unit to the water pump draw water characteristic curve and model whether relatively determine the water pump unloaded.
Description
Technical field
The utility model relates to a kind of improvement of control gear of water pump, and refer in particular to a kind of easy to make, cost is lower, and the control circuit of the water pump that can greatly extend its electrode life controlled.
Background technique
In the market submersible pump adopt usually switch to control the start and stop of submersible pump, existing switch is generally float-ball type, float type liquid level switch, they all employ moving element, or volume is larger, or comprising fragile part, probe-type is easily oxidized, and reliability, ease for use etc. are all unsatisfactory, and making inconvenient, cost is high.
For this reason, we have developed a kind of easy to make, and cost is lower, and the control circuit of the water pump that can greatly extend its electrode life controlled.
Model utility content
The utility model object is easy to make in order to overcome the one that the deficiencies in the prior art provide, and cost is lower, and the control circuit of the water pump that can greatly extend its electrode life controlled.
For achieving the above object, the technical solution adopted in the utility model is: a kind of control circuit of water pump, comprises MCU circuit, mu balanced circuit; Described mu balanced circuit is powered to MCU circuit; MCU circuit sends high-frequency impulse to high water level detection circuit and low water level detection circuit, and the water level information of detection is fed back to MCU circuit by high water level detection circuit and low water level detection circuit, when high water level detection circuit detects water level higher than predefined value; MCU circuit controls starting working of water pump by magnetic silicon controlled switch circuit; When low water level detection circuit detects water level lower than predefined value; MCU circuit controls quitting work of water pump by magnetic silicon controlled switch circuit.
Preferably, the control circuit of described water pump also comprises current detection circuit, and described mu balanced circuit is powered to current detection circuit; Described current detection circuit sends MCU circuit to the electric current of water electric motor for pump; When circuit overloads, MCU circuit controls quitting work of water pump by magnetic silicon controlled switch circuit.
Preferably, the control circuit of described water pump also comprises zero cross detection circuit, and the zero point that described zero cross detection circuit measures Ac passes to MCU circuit, for the Rule of judgment of MCU circuit start magnetic silicon controlled switch circuit.
Preferably, all adopting pulse transformer to detect in described high water level detection circuit and low water level detection circuit, being worth variable quantity to determine water level conditions by detecting AD; Transformer T1, T2 are used for measuring low water level; When measuring, MCU circuit sends pulse to transformer T1, if low water level, according to transformer principle, transformer T2 will produce voltage signal, voltage signal be sent to MCU circuit, MCU circuit can make corresponding judgement; Transformer T1, T3 are used for measuring high water level; When measuring, MCU circuit sends pulse to transformer T1, if high water level, according to transformer principle, transformer T3 will produce voltage signal, voltage signal be sent to MCU circuit, MCU circuit can make corresponding judgement.
Preferably, described magnetic silicon controlled switch circuit adopts RC absorbing circuit and piezoresistance to protect controllable silicon.
Preferably, described mu balanced circuit, by resistance-capacitance depressurization, obtains stable power supply by voltage stabilizer U1 after one way rectifier.
Preferably, described zero cross detection circuit adopts the zero point of the mode Sample AC electricity of resistance R11 and R12 dividing potential drop, and after the zero point collected, if now magnetic silicon controlled switch circuit needs to start, MCU circuit will send pulse to magnetic silicon controlled switch circuit, and drives it.
Preferably, described RC absorbing circuit, comprises resistance R3 and electric capacity C11, is used for absorbing the inverse electromotive force that produces when start and stop of water pump, is used for protecting controllable silicon.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
The control circuit of water pump described in the utility model is easy to make, and cost is lower, and its electrode life controlled can extend greatly; By current detection circuit, the utility model also detects with comparing of model, pumping for water pump electric current and MCU unit judge that whether water pump is unloaded to pumping for water pump characteristic curve.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Accompanying drawing 1 is the fundamental diagram of the control circuit of water pump described in the utility model;
Accompanying drawing 2 is the circuit diagram of the control circuit of water pump described in the utility model;
Wherein: 1, MCU circuit; 2, mu balanced circuit; 3, zero cross detection circuit; 4, current detection circuit; 5, magnetic silicon controlled switch circuit; 6, high water level detection circuit; 7, low water level detection circuit.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing 1-2 is the control circuit of water pump described in the utility model, comprises MCU circuit 1, mu balanced circuit 2, zero cross detection circuit 3, current detection circuit 4, magnetic silicon controlled switch circuit 5, high water level testing circuit 6, low water level testing circuit 7; Described magnetic silicon controlled switch circuit 5 can control the switch of water pump motor, and described mu balanced circuit 2 pairs of MCU circuit 1 and current detection circuit 4 are powered; MCU circuit 1 pair of high water level detection circuit 6 and low water level detection circuit 5 send high-frequency impulse, the water level information of detection is fed back to MCU circuit 1 by high water level detection circuit 6 and low water level detection circuit 7, and controlled the work of water pump by magnetic silicon controlled switch circuit 5, namely when high water level detection circuit 6 detects water level higher than predefined value; MCU circuit 1 controls starting working of water pump by magnetic silicon controlled switch circuit 5; When low water level detection circuit 7 detects water level lower than predefined value; MCU circuit 1 controls quitting work of water pump by magnetic silicon controlled switch circuit 5; Current detection circuit 4 sends MCU circuit 1 to the electric current of water electric motor for pump; When circuit overloads, MCU circuit 1 controls quitting work of water pump by magnetic silicon controlled switch circuit 5.The zero point that zero cross detection circuit 3 measures Ac passes to MCU circuit 1, starts the Rule of judgment of magnetic silicon controlled switch circuit 5 for MCU circuit 1; Adopting pulse transformer to detect in described high water level detection circuit 6 and low water level detection circuit 7, being worth variable quantity to determine water level conditions by detecting AD.Described magnetic silicon controlled switch circuit 5 adopts RC absorbing circuit and piezoresistance to protect controllable silicon.
As in accompanying drawing 2, described mu balanced circuit 2, by resistance-capacitance depressurization, obtains stable power supply by voltage stabilizer U1 after one way rectifier, for MCU circuit 1 and current detection circuit 4.D3 voltage-stabiliser tube is used to voltage stabilizing, and make the input voltage of voltage stabilizer U1 not too large, resistance R2 is metering function, prevents the electric current when zero load on voltage stabilizer excessive; Described zero cross detection circuit 3 adopts the zero point of the mode Sample AC electricity of resistance R11 and R12 dividing potential drop, and resistance R22 plays metering function; Such benefit detecting zero point is very accurate, does not have any time delay; After the zero point collected, if now magnetic silicon controlled switch circuit 5 needs to start, MCU circuit 1 will send pulse to magnetic silicon controlled switch circuit, and drive it, adopt such driving mode, can effectively save power electric flow valuve, to make up the undercurrent that one way rectifier is brought; Described RC absorbing circuit, comprises resistance R3 and electric capacity C11, is used for absorbing the inverse electromotive force that produces when start and stop of water pump, is used for protecting controllable silicon.
Piezoresistance RV1 is also used to protect ghyristor circuit, and after the voltage of inverse electromotive force is greater than certain value, resistance RV1 can rapid short circuit, and inverse electromotive force just flows through from RV1, thus protects controllable silicon.
Resistance R4, R21 and R16 form current measurement circuit 4, are used for detecting pump working electric current, and when water level is in low water level, and when water pump is taken out for some reason less than water, MCU circuit can switch off the pump according to current value, thus protection water pump, extend the life-span of water pump.
Transformer T1, T2, T3 are used for measuring high water level and low water level; When measuring, MCU circuit sends pulse to transformer T1, if low water level, according to transformer principle, transformer T2 will produce voltage signal, voltage signal be sent to MCU circuit 1, MCU circuit 1 and can make corresponding judgement.When measuring, MCU circuit sends pulse to transformer T1, if high water level, according to transformer principle, transformer T3 will produce voltage signal, voltage signal be sent to MCU circuit 1, MCU circuit 1 and can make corresponding judgement.
When systematic survey is to high water level, magnetic silicon controlled switch circuit 5 is started working, water pump operation.When low water level can't detect, it is out of service that magnetic silicon controlled switch circuit 5 controls water pump.If when being in low water level, and the electric current measured is no load current, and after 15 seconds, water pump can be automatically out of service.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
The control circuit of water pump described in the utility model is easy to make, and cost is lower, and its electrode life controlled can extend greatly; By current detection circuit, the utility model also detects with comparing of model, pumping for water pump electric current and MCU unit judge that whether water pump is unloaded to pumping for water pump characteristic curve.
Below be only embody rule example of the present utility model, protection domain of the present utility model is not constituted any limitation.The technological scheme that all employing equivalents or equivalence are replaced and formed, all drops within the utility model rights protection scope.
Claims (8)
1. a control circuit for water pump, is characterized in that: comprise MCU circuit, mu balanced circuit; Described mu balanced circuit is powered to MCU circuit; MCU circuit sends high-frequency impulse to high water level detection circuit and low water level detection circuit, and the water level information of detection is fed back to MCU circuit by high water level detection circuit and low water level detection circuit, when high water level detection circuit detects water level higher than predefined value; MCU circuit controls starting working of water pump by magnetic silicon controlled switch circuit; When low water level detection circuit detects water level lower than predefined value; MCU circuit controls quitting work of water pump by magnetic silicon controlled switch circuit.
2. the control circuit of water pump according to claim 1, is characterized in that: also comprise current detection circuit, described mu balanced circuit is powered to current detection circuit; Described current detection circuit sends MCU circuit to the electric current of water electric motor for pump; When circuit overloads, MCU circuit controls quitting work of water pump by magnetic silicon controlled switch circuit.
3. the control circuit of water pump according to claim 1 and 2, it is characterized in that: the control circuit of described water pump also comprises zero cross detection circuit, the zero point that described zero cross detection circuit measures Ac passes to MCU circuit, for the Rule of judgment of MCU circuit start magnetic silicon controlled switch circuit.
4. the control circuit of water pump according to claim 3, it is characterized in that: described zero cross detection circuit adopts the zero point of the mode Sample AC electricity of resistance R11 and R12 dividing potential drop, after the zero point collected, if now magnetic silicon controlled switch circuit needs to start, MCU circuit will send pulse to magnetic silicon controlled switch circuit, and drives it.
5. the control circuit of the water pump according to claim 1 or 2 or 4, is characterized in that: all adopt pulse transformer to detect in described high water level detection circuit and low water level detection circuit, is worth variable quantity to determine water level conditions by detecting AD; Transformer T1, T2 are used for measuring low water level; When measuring, MCU circuit sends pulse to transformer T1, if low water level, according to transformer principle, transformer T2 will produce voltage signal, voltage signal be sent to MCU circuit, MCU circuit can make corresponding judgement; Transformer T1, T3 are used for measuring high water level; When measuring, MCU circuit sends pulse to transformer T1, if high water level, according to transformer principle, transformer T3 will produce voltage signal, voltage signal be sent to MCU circuit, MCU circuit can make corresponding judgement.
6. the control circuit of water pump according to claim 5, is characterized in that: described magnetic silicon controlled switch circuit adopts RC absorbing circuit and piezoresistance to protect controllable silicon.
7. the control circuit of water pump according to claim 6, is characterized in that: described RC absorbing circuit, comprises resistance R3 and electric capacity C11, is used for absorbing the inverse electromotive force that produces when start and stop of water pump, is used for protecting controllable silicon.
8. the control circuit of water pump according to claim 7, is characterized in that: described mu balanced circuit, by resistance-capacitance depressurization, obtains stable power supply by voltage stabilizer U1 after one way rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512129.0U CN204827960U (en) | 2015-07-16 | 2015-07-16 | Control circuit of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512129.0U CN204827960U (en) | 2015-07-16 | 2015-07-16 | Control circuit of water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827960U true CN204827960U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520512129.0U Active CN204827960U (en) | 2015-07-16 | 2015-07-16 | Control circuit of water pump |
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| CN (1) | CN204827960U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9950935B2 (en) * | 2014-09-30 | 2018-04-24 | Daikin Industries, Ltd. | Water treatment device and humidification device |
| CN110231839A (en) * | 2019-06-28 | 2019-09-13 | 苏州优德通力科技有限公司 | A kind of device controlled with infrared ray self-identifying Liquid level and ultra low water level |
-
2015
- 2015-07-16 CN CN201520512129.0U patent/CN204827960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9950935B2 (en) * | 2014-09-30 | 2018-04-24 | Daikin Industries, Ltd. | Water treatment device and humidification device |
| CN110231839A (en) * | 2019-06-28 | 2019-09-13 | 苏州优德通力科技有限公司 | A kind of device controlled with infrared ray self-identifying Liquid level and ultra low water level |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Cheng Hu Lu, Wuzhong Economic Development Zone of Suzhou City, Jiangsu Province, No. 7 215168 Patentee after: GP ENTERPRISES CO., LTD. Address before: Cheng lake road Wuzhong Economic Development Zone of Suzhou City, Jiangsu Province, No. 7 215128 Patentee before: Suzhou GP Enterprises Co., Ltd. |