CN105299929A - Intelligent household solar energy water heater regulation and control system - Google Patents
Intelligent household solar energy water heater regulation and control system Download PDFInfo
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- CN105299929A CN105299929A CN201510757434.0A CN201510757434A CN105299929A CN 105299929 A CN105299929 A CN 105299929A CN 201510757434 A CN201510757434 A CN 201510757434A CN 105299929 A CN105299929 A CN 105299929A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an intelligent household solar energy water heater regulation and control system which comprises a microcontroller module, a cold water pipe solenoid valve, a hot water pipe solenoid valve, a temperature sensor, a flow sensor, a display unit and a keyboard input unit, wherein the cold water pipe solenoid valve, the hot water pipe solenoid valve, the temperature sensor, the flow sensor, the display unit and the keyboard input unit are connected with the microcontroller. The microcontroller module comprises a comparison unit and a control unit. The opening degrees of the cold water pipe solenoid valve and the hot water pipe solenoid valve are controlled by detecting the temperature and water flow of a water mixing opening, the flow is stabilized to be at the set value, more importantly, and the water outlet temperature is stabilized to be at the set value as well; and the problems that the temperature and flow of water sprayed by a spray head are unstable are solved effectively, and accordingly the constant-temperature water mixing function is achieved.
Description
Technical field
The present invention relates to a kind of constant-temperature water mixing device, particularly relate to a kind of Smart Home solar water heater regulator control system, belong to constant temperature water mixing control field.
Background technology
Current, greatly develop the overall situation of new forms of energy in country under, the exploitation of water energy, solar energy, biomass energy etc. obtain attention especially.In these areas, solar water heater is then the large industry of one in solar energy application of result, and it, with advantages such as environmental protection, safe, energy-conservation, health, has won rapidly the favor of consumers in general.
In all multi-parts of solar water heater, one is had to be that users the most often contact, that mixed exactly water valve---valve used in bathing process.Its some defects are also that users can directly realize: standard machinery mixes water valve being difficult to very and reconciles: the twisting that an amplitude of carrying out with hand is very little may cause the change of very large water temperature.The determination of water temperature relies on the sensation of people: a very long time also will be waited could to determine real water temperature, because the water after regulating flow to shower nozzle from mixed water spot also have not short distance after the subject matter of this respect is user's control valve.Also to adjust again if improper, not only expend time in, also very waste water resource.If user interrupts bathing, need valve-off, continue bathing and then will again regulate.So, have many users to reduce inconvenience, even also not valve-off in the process not using water, greatly wastes water resource.
Current solar water heater, is mostly water falling type, and the hydraulic pressure in instant heating water pipe settles mineralization pressure between height and user place height to provide by water at water heater completely.Such hydraulic pressure presentation mode is often unstable, and if story height is then less, the instability of running water pipe hydraulic pressure in addition, cause standard machinery to mix the pressure change of water in the uncontrollable bathing process of water valve, final performance is: water outlet is sometimes hot and sometimes cold.
In addition, to make final water yield and water temperature stability, the material impact that must consider is hydraulic pressure.Present solar water heater generally adopts water falling type installation method, hydraulic pressure is often unstable, simultaneously, if user to live floor higher, then the hydraulic pressure of hot-water line self is too little, and tap water hydraulic change frequently in addition, finally result in the sometimes hot and sometimes cold of shower nozzle output water temperature, suddenly big or suddenly small, the serious backflow that also can cause water in hot water pipeline.
Such as application number is a kind of mixing device for automatic constant-temperature water mixing valve of " 201010002396.5 ", comprises cold water inlet, water inlet of hot water, mixing chamber and mixing water delivery port, and current vortex generator.Cold water and hot water flow to current vortex generator from described cold water inlet, water inlet of hot water respectively, and produce screw, and produce eddying motion in described mixing chamber.Therefore, hot water or cold water just rapid mixing is even.The automatic constant temperature water outlet device vortex water-water jet that this invention proposes, size is little, cost is low and structure is simple, makes the temperature sensor of automatic thermostatic water mixing valve correctly can reflect the temperature that hot and cold water mixes.Thus it is high, suddenly low to make the automatic thermostatic water mixing valve of this water admixing device of employing avoid leaving water temperature to neglect.
And for example application number is " 201210038291.4 " a kind of Intelligent constant-temperature water mixing device, comprise valve body and the controller of hollow, valve body is provided with cooling water inlet, hot water inlet and delivery port, the inherent cooling water inlet place of described valve body is provided with cold water flow controlling organization and cold water temperature sensor, the inherent hot water inlet place of valve body is provided with hot water flow controlling organization and hot water temperature sensor, the inherent water outlet of valve body is provided with leaving water temperature sensors, water flow sensor and magnetic valve, cold water temperature sensor, hot water temperature sensor, leaving water temperature sensors is all connected with controller communication with water flow sensor, cold water flow controlling organization, hot water flow controlling organization and magnetic valve control by controller.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Smart Home solar water heater regulator control system for the deficiency of background technology, which solves the problem that water outlet is sometimes hot and sometimes cold, suddenly big or suddenly small, and then achieve the function of constant temperature water mixing.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of Smart Home solar water heater regulator control system, comprise regulation and control terminal and connected sense terminals, described sense terminals comprises micro controller module and connected temperature sensor, flow sensor and data transmission module, and described regulation and control terminal comprises main controller module and connected display module, input through keyboard module, cold water pipe magnetic valve, hot-water line magnetic valve, radio frequency identification module;
Described radio frequency identification module comprises a regulator rectifier circuit, and described regulator rectifier circuit comprises coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit, circuit mu balanced circuit; Described coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit connect successively, and described circuit mu balanced circuit is connected with amplitude limit bleeder circuit, circuit mu balanced circuit respectively, and described coupling circuit is for being coupled to radio frequency identification module by input signal; Described amplitude limit testing circuit is for detecting the voltage amplitude after rectification; Described amplitude limit bleeder circuit is for unnecessary current drain of releasing; Described mu balanced circuit for carry out voltage stabilizing process, stable output supply voltage for other circuit module;
Wherein, temperature sensor, for detecting the water temperature at the mixed mouth of a river in real time;
Flow sensor, for detecting the discharge at the mixed mouth of a river in real time;
Micro controller module, the discharge that water temperature and flow sensor for temperature sensor being detected the mixed mouth of a river detect the mixed mouth of a river transfers to mobile monitoring terminal by data transmission module;
Radio frequency identification module, for receiving and identify the water temperature that micro controller module is sent by data transmission module and discharge;
Input through keyboard module, for regulating water temperature and discharge preset value;
Main controller module, for contrasting, if water temperature, discharge are below or above preset value, by Controlling solenoid valve aperture until temperature and discharge reach preset value according to the water temperature received, discharge and water temperature, discharge preset value;
Display module, for showing the current water temperature in the mixed mouth of a river, water temperature preset value, discharge and discharge preset value.
As the further preferred version of a kind of Smart Home of the present invention solar water heater regulator control system, the model of described micro controller module is AVR series monolithic.
As the further preferred version of a kind of Smart Home of the present invention solar water heater regulator control system, described temperature sensor adopts DS18B20 temperature sensor.
As the further preferred version of a kind of Smart Home of the present invention solar water heater regulator control system, described water flow sensor adopts vane-wheel type flowmeter.
As the further preferred version of a kind of Smart Home of the present invention solar water heater regulator control system, described display module adopts LCD display.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, structure of the present invention is simple and effective solves sometimes hot and sometimes cold, the suddenly big or suddenly small problem of shower nozzle water outlet, and then achieves the function of constant temperature water mixing;
2, the present invention is by detecting the temperature and discharge of mixing the mouth of a river and then the aperture controlling hot cold magnetic valve, not only realizes stability of flow in setting value, the more important thing is and make leaving water temperature also be stabilized in setting value
3, the present invention adopts dual controller, and operating efficiency is higher.
Detailed description of the invention
Below technical scheme of the present invention is described in further detail:
A kind of Smart Home solar water heater regulator control system, comprise regulation and control terminal and connected sense terminals, described sense terminals comprises micro controller module and connected temperature sensor, flow sensor and data transmission module, and described regulation and control terminal comprises main controller module and connected display module, input through keyboard module, cold water pipe magnetic valve, hot-water line magnetic valve, radio frequency identification module;
Described radio frequency identification module comprises a regulator rectifier circuit, and described regulator rectifier circuit comprises coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit, circuit mu balanced circuit; Described coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit connect successively, and described circuit mu balanced circuit is connected with amplitude limit bleeder circuit, circuit mu balanced circuit respectively, and described coupling circuit is for being coupled to radio frequency identification module by input signal; Described amplitude limit testing circuit is for detecting the voltage amplitude after rectification; Described amplitude limit bleeder circuit is for unnecessary current drain of releasing; Described mu balanced circuit for carry out voltage stabilizing process, stable output supply voltage for other circuit module;
Wherein, temperature sensor, for detecting the water temperature at the mixed mouth of a river in real time;
Flow sensor, for detecting the discharge at the mixed mouth of a river in real time;
Micro controller module, the discharge that water temperature and flow sensor for temperature sensor being detected the mixed mouth of a river detect the mixed mouth of a river transfers to mobile monitoring terminal by data transmission module;
Radio frequency identification module, for receiving and identify the water temperature that micro controller module is sent by data transmission module and discharge;
Input through keyboard module, for regulating water temperature and discharge preset value;
Main controller module, for contrasting, if water temperature, discharge are below or above preset value, by Controlling solenoid valve aperture until temperature and discharge reach preset value according to the water temperature received, discharge and water temperature, discharge preset value;
Display module, for showing the current water temperature in the mixed mouth of a river, water temperature preset value, discharge and discharge preset value.
As the further preferred version of a kind of Smart Home of the present invention solar water heater regulator control system, the model of described micro controller module is AVR series monolithic.
Wherein, described temperature sensor adopts DS18B20 temperature sensor, and described water flow sensor adopts vane-wheel type flowmeter, and described display module adopts LCD display.
Wherein, temperature measuring section and flow measurement section specific as follows: Temperature measuring section is divided into DS18B20 temperature sensor, after being placed on the mixed mouth of a river, the position that hot and cold water has fully mixed, measure water temperature.This sensor accuracy is higher, and directly temperature data serial can be sent to PIC32, and data processing is got up very convenient.Flow measurement section is vane-wheel type flowmeter, after being placed on temperature sensor.It directly can send the traffic conditions of water to single-chip microcomputer with pulse signal, according to obtaining actual fluid flow after simple formulae discovery.By measuring flow: one, introduces a given data amount, can make two magnetic valves while adjustment water temperature, carrying out the adjustment of flow, make the two all be stabilized in setting value; Its two, the impact of hydraulic pressure is embodied in the impact on discharge to a certain extent, by measure fluid flow, indirectly can cut down the impact of variation in water pressure on device.The output of device is two magnetic valves be placed in respectively in cold water pipes heat of neutralization waterpipe.For the adjustment of valve, it is two-output impulse generator.
Display module part adopts seven segment digital tubes.Show current water temperature, water temperature preset value and flow preset value respectively.User can regulate preset value by button.So user can be made to get information about the index of current solar water heater, very hommization.AVR single chip has prefetched instruction function, namely when an execution instruction, in advance next instruction is got into, and call instruction can be performed within a clock cycle; Multiple accumulator type, data processing speed is fast; AVR single chip has 32 general purpose working registers, and being equivalent to has 32 viaducts, can fast passing; Response time is fast.AVR single chip has multiple fixing interrupt vector entry address, can respond interruption fast; AVR single chip power consumption is low.For typical power consumption situation, be 100nA when WDT closes, be more suitable for battery powered application apparatus; The minimum 1.8V of some devices gets final product work; AVR single chip security performance is good.
Concrete steps are as follows: if water temperature over-high, then increase cold valves aperture, until temperature drops to preset value.Reduce the aperture of Cold-hot water valve afterwards, until flow reaches preset value according to actual discharge and the ratio of setting flow simultaneously.If water temperature changes in adjustment discharge process, then return last link and regulate, until stable.If water temperature is too low, then regulate in the mode contrary with A process.If discharge is excessive, then reduce the aperture of Cold-hot water valve according to actual discharge and the ratio of setting flow, until flow reaches preset value simultaneously.At this moment regulate with process A or B again, until stable.If discharge is too high, then carry out in the mode contrary with C process.
Wherein influence of hydraulic pressure is the most unmanageable part in whole system.Hydraulic pressure is all no small for the impact of water temperature and flow, and the impact of hydraulic pressure is embodied in the impact on discharge to a certain extent, by measuring fluid flow, indirectly can cut down the impact of variation in water pressure on device.Magnetic valve adopts Unidirectional solenoid valve, suppresses excessive due to side's hydraulic pressure and backflow situation that is that cause.
The present invention effectively solves sometimes hot and sometimes cold, the suddenly big or suddenly small problem of shower nozzle water outlet, and then achieves the function of constant temperature water mixing;
By detecting the temperature at the mixed mouth of a river and discharge and then controlling the aperture of hot cold magnetic valve, not only realize stability of flow in setting value, the more important thing is and make leaving water temperature also be stabilized in setting value.And then ensure that the thermostatic control of water.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.
Claims (5)
1. a Smart Home solar water heater regulator control system, it is characterized in that: comprise regulation and control terminal and connected sense terminals, described sense terminals comprises micro controller module and connected temperature sensor, flow sensor and data transmission module, and described regulation and control terminal comprises main controller module and connected display module, input through keyboard module, cold water pipe magnetic valve, hot-water line magnetic valve, radio frequency identification module;
Described radio frequency identification module comprises a regulator rectifier circuit, and described regulator rectifier circuit comprises coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit, circuit mu balanced circuit; Described coupling circuit, amplitude limit testing circuit, amplitude limit bleeder circuit connect successively, and described circuit mu balanced circuit is connected with amplitude limit bleeder circuit, circuit mu balanced circuit respectively, and described coupling circuit is for being coupled to radio frequency identification module by input signal; Described amplitude limit testing circuit is for detecting the voltage amplitude after rectification; Described amplitude limit bleeder circuit is for unnecessary current drain of releasing; Described mu balanced circuit for carry out voltage stabilizing process, stable output supply voltage for other circuit module;
Wherein, temperature sensor, for detecting the water temperature at the mixed mouth of a river in real time;
Flow sensor, for detecting the discharge at the mixed mouth of a river in real time;
Micro controller module, the discharge that water temperature and flow sensor for temperature sensor being detected the mixed mouth of a river detect the mixed mouth of a river transfers to mobile monitoring terminal by data transmission module;
Radio frequency identification module, for receiving and identify the water temperature that micro controller module is sent by data transmission module and discharge;
Input through keyboard module, for regulating water temperature and discharge preset value;
Main controller module, for contrasting, if water temperature, discharge are below or above preset value, by Controlling solenoid valve aperture until temperature and discharge reach preset value according to the water temperature received, discharge and water temperature, discharge preset value;
Display module, for showing the current water temperature in the mixed mouth of a river, water temperature preset value, discharge and discharge preset value.
2. a kind of Smart Home solar water heater regulator control system according to claim 1, is characterized in that: the model of described micro controller module is AVR series monolithic.
3. a kind of Smart Home solar water heater regulator control system according to claim 1, is characterized in that: described temperature sensor adopts DS18B20 temperature sensor.
4. a kind of Smart Home solar water heater regulator control system according to claim 1, is characterized in that: described water flow sensor adopts vane-wheel type flowmeter.
5. a kind of Smart Home solar water heater regulator control system according to claim 1, is characterized in that: described display module adopts LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510757434.0A CN105299929A (en) | 2015-11-10 | 2015-11-10 | Intelligent household solar energy water heater regulation and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510757434.0A CN105299929A (en) | 2015-11-10 | 2015-11-10 | Intelligent household solar energy water heater regulation and control system |
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| CN105299929A true CN105299929A (en) | 2016-02-03 |
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| CN201510757434.0A Pending CN105299929A (en) | 2015-11-10 | 2015-11-10 | Intelligent household solar energy water heater regulation and control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790608A (en) * | 2016-03-24 | 2016-07-20 | 苏州合欣美电子科技有限公司 | Three-phase power supply with rectification and voltage stabilization functions |
| CN106016762A (en) * | 2016-07-11 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Shower head, water heater and water heater system |
| CN107479364A (en) * | 2017-09-13 | 2017-12-15 | 西安科技大学 | A kind of fluid hybrid control system based on double closed-loop PID algorithm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569041Y (en) * | 2002-08-13 | 2003-08-27 | 苏州正杰自动控制设备有限公司 | Digital code controlled constant temp regulator for solar water heater |
| GB2425884A (en) * | 2005-05-04 | 2006-11-08 | Lontra Environmental Technolog | Photovoltaic module |
| CN201270084Y (en) * | 2008-07-23 | 2009-07-08 | 惠州市卓耐普智能技术有限公司 | Control instrument for solar water heater |
| CN201844588U (en) * | 2010-09-30 | 2011-05-25 | 鲁黎明 | Electric thermostat of solar water heater |
| CN104516381A (en) * | 2013-09-26 | 2015-04-15 | 上海华虹集成电路有限责任公司 | Rectification and voltage stabilization circuit for radio frequency identification |
-
2015
- 2015-11-10 CN CN201510757434.0A patent/CN105299929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569041Y (en) * | 2002-08-13 | 2003-08-27 | 苏州正杰自动控制设备有限公司 | Digital code controlled constant temp regulator for solar water heater |
| GB2425884A (en) * | 2005-05-04 | 2006-11-08 | Lontra Environmental Technolog | Photovoltaic module |
| CN201270084Y (en) * | 2008-07-23 | 2009-07-08 | 惠州市卓耐普智能技术有限公司 | Control instrument for solar water heater |
| CN201844588U (en) * | 2010-09-30 | 2011-05-25 | 鲁黎明 | Electric thermostat of solar water heater |
| CN104516381A (en) * | 2013-09-26 | 2015-04-15 | 上海华虹集成电路有限责任公司 | Rectification and voltage stabilization circuit for radio frequency identification |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790608A (en) * | 2016-03-24 | 2016-07-20 | 苏州合欣美电子科技有限公司 | Three-phase power supply with rectification and voltage stabilization functions |
| CN106016762A (en) * | 2016-07-11 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Shower head, water heater and water heater system |
| CN107479364A (en) * | 2017-09-13 | 2017-12-15 | 西安科技大学 | A kind of fluid hybrid control system based on double closed-loop PID algorithm |
| CN107479364B (en) * | 2017-09-13 | 2021-08-31 | 西安科技大学 | Fluid mixing control system based on double closed-loop PID algorithm |
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Application publication date: 20160203 |
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