CN104898738B - Constant temperature heating control method for electronic toilet - Google Patents
Constant temperature heating control method for electronic toilet Download PDFInfo
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- CN104898738B CN104898738B CN201510150741.2A CN201510150741A CN104898738B CN 104898738 B CN104898738 B CN 104898738B CN 201510150741 A CN201510150741 A CN 201510150741A CN 104898738 B CN104898738 B CN 104898738B
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Abstract
The invention discloses a constant temperature heating control method for an electronic toilet, which can be used for instant heating control when the electronic intelligent toilet is in a flushing state. Different heating modes are selected according to a difference values between water outlet temperature and preset water outlet temperature so as to ensure ejection of warm water to last for a long time and the heating efficiency to be high. Three modes are divided to control a water tank to heat according to water outlet temperature conditions, when the water outlet temperature is higher than the preset temperature, according to a water outlet temperature change trend control, heating is closed in the case of temperature rise, and heating is started in the case of temperature fall; when the water outlet temperature is lower than the preset temperature (no less than 4 DEG lower actually), the allowable maximal power is used for heating; and when the water outlet temperature and the preset temperature are in a certain range, a basic heating power is determined through the water inlet temperature and current flow, a correction power is obtained according to deviation between the current water outlet temperature and the preset temperature and in combination with PID algorithm, adjustment on output heating power is further carried out through calculation. Heating is flexibly controlled, stability is strong, and errors are small.
Description
Technical field
The present invention relates to sanitaryware computer heating control field, the heated at constant temperature controlling party of particularly a kind of the electronic toilet
Method.
Background technology
Smart electronicses toilet seat on market, can spray warm water cleaning human body, and its warm water water source is by being installed on toilet seat
Interior water tank is provided.Heater is provided with water tank, after the temperature for heating the water to user setting, the effect of Jing water injection systems
Spray.
The mode of heating of existing smart electronicses toilet seat, generally using heating immediately during water outlet, it is according to flow and goes out
Coolant-temperature gage is calculated heating power, and using this kind of computer heating control mode, the persistent period that warm water sprays is short, sprays water temperature drop
Hurry up.
The content of the invention
Present invention is primarily targeted at overcoming drawbacks described above of the prior art, propose that a kind of warm water sprays the persistent period
The heated at constant temperature control method of the high the electronic toilet of the long, efficiency of heating surface.
The present invention is adopted the following technical scheme that：
The heated at constant temperature control method of a kind of the electronic toilet, under being applied to flushing state, it is characterised in that：User is advance
Leaving water temperature is set as T, and makes temperature gap include a, b, c, and a ＞ b ＞ c；Specifically include following steps
1) judge that leaving water temperature, whether more than T+a, if so, then stops heating；If it is not, then judging whether inflow temperature is more than
T, if so, then stops heating, if otherwise entering step 2)；
2) leaving water temperature is judged whether more than T+b, if so, then according to output water temperature variation tendency stopping heating or start
Heating；If it is not, whether leaving water temperature is then judged less than T+c, if so, then according to inflow temperature and maximum stream flow calculating maximum heating
Power P max, and heated with Pmax power, if it is not, then entering step 3)；
3) base power Pbase is calculated according to inflow temperature and present flow rate, is calculated according to inflow temperature and maximum stream flow
Maximum heating power P max, corrected output Padj is calculated to temperature deviation using pid algorithm, is counted according to Pbase and Padj
Calculation obtains actual power Pneed, determines that output heating power is heated finally according to Pneed and Pmax.
Preferably, in step 2) in, c is negative value, and described calculates maximum heating according to inflow temperature and maximum stream flow
Power P max, specially Pmax=maximum stream flows * (T- inflow temperatures) * specific heat capacities.
Preferably, in step 3) in, Pbase=present flow rates * (T- inflow temperatures) * specific heat capacities.
Preferably, in step 3) in, the integration+Td* temperature deviations of Padj=Kp* temperature deviation+Ti* temperature deviations it is micro-
Point, the temperature deviation is the difference of default leaving water temperature and current leaving water temperature, and Kp, Ti, Td are respectively proportionality coefficient, integration
Time constant and derivative time constant.
Preferably, in step 3) in, Pneed=Pbase+Padj.
Preferably, in step 3) in, finally select smaller value in Pneed and Pmax to carry out adding as the heating power of output
Heat.
Preferably, the electronic toilet is by water route reversal valve switching water discharging pattern, the present flow rate with it is described most
Big flow is determined by water exit mode.
Preferably, the inflow temperature sensor and leaving water temperature sensors by being arranged in water tank is detected respectively into water temperature
Degree and leaving water temperature.
From the above-mentioned description of this invention, compared with prior art, the present invention has the advantages that：
The present invention be applied to electronic intelligence toilet seat rinse state when instant computer heating control, according to leaving water temperature with it is advance
The leaving water temperature difference of setting selecting different heating mode, to ensure that it is high that warm water sprays persistent period length, the efficiency of heating surface.
The present invention is less than and during be close to leaving water temperature set in advance in leaving water temperature, by inflow temperature and present flow rate
It is determined that basic heating power, is combined pid algorithm and obtain corrected output according to current leaving water temperature with the deviation of preset temperature, enter one
Step calculates the regulation for carrying out exporting heating power, and computer heating control is flexible, stability is strong, error is little.
Description of the drawings
Fig. 1 is the water computer heating control main flow chart of the electronic toilet；
Fig. 2 is the heated at constant temperature control method (under flushing state) of the present invention.
Specific embodiment
Below by way of specific embodiment, the invention will be further described.
With reference to Fig. 1, the water computer heating control main flow of the electronic toilet is including as follows：First judge whether in flushing state,
If so, then using the heated at constant temperature control method of the present invention；If it is not, then judge whether user takes a seat, if so, then fallen using user
Seat water level method for heating and controlling, if it is not, then adopting thermal-insulation control method.
The heated at constant temperature control method of a kind of the electronic toilet of the present invention, under being applied to flushing state.The electronics toilet seat
Device includes water tank, heater, inflow temperature sensor, leaving water temperature sensors, controllable silicon, water route reversal valve, nozzle water outlet dress
Put and control system.The heater is located in water tank, and the inflow temperature sensor and leaving water temperature sensors are located at respectively water tank
Water inlet and outlet.The controllable silicon is connected with control system and heater, for being added according to the order of control system control
The heating power of hot device.The water route reversal valve is connected with nozzle discharging device and control system, for according to the life of control system
The current water exit mode of order control, and the flow of different water exit modes is different.
With reference to Fig. 2, it is T that user presets leaving water temperature, and makes temperature gap include a, b, c, and a ＞ b ＞ c, specifically
Heated at constant temperature control method comprise the steps：
1) judge that leaving water temperature, whether more than T+a, if so, then stops heating；If it is not, then judging whether inflow temperature is more than
T, if so, then stops heating, if otherwise entering step 2)；
2) leaving water temperature is judged whether more than T+b, if so, then according to output water temperature variation tendency stopping heating or start
Heating, i.e. leaving water temperature are raised, then stop heating, and leaving water temperature is relatively low, then start heating.
If it is not, whether then judging leaving water temperature less than T+c, c is negative value, if so, then according to inflow temperature and maximum stream flow
Maximum heating power P max is calculated, and is heated with Pmax power, Pmax=maximum stream flows * (T- inflow temperatures) * specific heat capacities,
Specific heat capacity is the specific heat capacity of water.If it is not, then entering step 3)；
3) base power Pbase is calculated according to inflow temperature and present flow rate, (T- enters water temperature to Pbase=present flow rates *
Degree) * specific heat capacities.Maximum heating power P max is calculated according to inflow temperature and maximum stream flow, Pmax=maximum stream flows * (intake by T-
Temperature) * specific heat capacities.Pid algorithm is combined with temperature deviation according to leaving water temperature and is calculated corrected output Padj, Padj=Kp* temperature
The differential of the integration+Td* temperature deviations of deviation+Ti* temperature deviations, temperature deviation is default leaving water temperature and current leaving water temperature
Difference, Kp, Ti, Td are respectively proportionality coefficient, integral constant and derivative constant.
Then, actual power Pneed, Pneed=Pbase+Padj are calculated according to Pbase and Padj.
Finally, smaller value in Pneed and Pmax is selected to be heated as output heating power.
Specifically, according to the discretization formula of existing pid algorithm： E (k) is Current Temperatures deviation, and proportional therein, basic (current) of energy response system is inclined
Difference；Integral term, the Accumulated deviation of response system makes system eliminate steady-state error, improves without margin, because there is error, integration is adjusted
Section is just carried out, until error free；Differential term, reflects the rate of change of system deviation signal, with predictability, can predict change of error
Trend, produce advanced control action, before deviation is not also formed, adjustment effect elimination has been differentiated.
Illustrate：Assume that inflow temperature is 15 DEG C, leaving water temperature is 38 DEG C, T=39 DEG C of leaving water temperature set in advance,
Water exit mode includes 5 gears, and present flow rate is 560ml/min (9.33ml/second), and maximum stream flow is 720ml/min
(12ml/second), the specific heat capacity of water is 4.2 × 10^3 Jiao/(kilogram × DEG C).A=2 DEG C, b=0.8 DEG C, c=-4 DEG C.
Then Pbase=present flow rates * (T- inflow temperatures) * specific heat capacities=9.33ml/s* (39 DEG C -15 DEG C) * 4.2 × 10^3
Jiao/(kilogram × DEG C)=940W；
Pmax=Pmax=maximum stream flows * (T- inflow temperatures) * specific heat capacities=12ml/s* (39 DEG C -15 DEG C) * 4.2 × 10^
3 Jiao/(kilogram × DEG C)=1209W；
The differential of the integration+Td* temperature deviations of Padj=Kp* temperature deviation+Ti* temperature deviations, temperature deviation is default
The difference of leaving water temperature and current leaving water temperature, then be 39 DEG C -38 DEG C=1 DEG C.When Kp, Ti, Td are respectively proportionality coefficient, integration
Between constant and derivative time constant, it is assumed that value is respectively 8,0.2,0.5, then Padj=8*1+0.2*1+0.5*0=8.2w.
Pneed=Pbase+Padj=940w+8.2w=948.2w.
Because of Pneed ＜ Pmax, then using Pneed=948.2w as output heating power control heating.
The present invention controls heating water tanks according to three kinds of modes of leaving water temperature situation point：When leaving water temperature it is higher than preset temperature
When, according to the trend control of leaving water temperature change, rising and then close heating, drop then starts heating；When leaving water temperature compares preset temperature
(actual is low more than 4 degree) is heated with the peak power for allowing when relatively low；When leaving water temperature and preset temperature within the specific limits
When, basic heating power is determined by inflow temperature and present flow rate, tied according to the deviation of current leaving water temperature and preset temperature
Close pid algorithm and obtain corrected output, further calculate the regulation for carrying out exporting heating power, computer heating control is flexible, stability is strong,
Error is little.
The specific embodiment of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Design carries out the change of unsubstantiality to the present invention, all should belong to the behavior for invading the scope of the present invention.
Claims (8)
1. the heated at constant temperature control method of a kind of the electronic toilet, under being applied to flushing state, it is characterised in that：User sets in advance
It is T to make coolant-temperature gage, and makes temperature gap include a, b, c, and a ＞ b ＞ c, and c is negative value；Specifically include following steps
1) judge that leaving water temperature, whether more than T+a, if so, then stops heating；If it is not, whether inflow temperature is then judged more than T, if
It is then to stop heating, if otherwise entering step 2)；
2) leaving water temperature is judged whether more than T+b, if so, then according to output water temperature variation tendency stopping heating or starting adding
Heat；If it is not, whether leaving water temperature is then judged less than T+c, if so, then according to inflow temperature and maximum stream flow calculating maximum heating work(
Rate Pmax, and heated with Pmax power, if it is not, then entering step 3)；
3) base power Pbase is calculated according to inflow temperature and present flow rate, calculates maximum according to inflow temperature and maximum stream flow
Heating power Pmax, corrected output Padj is calculated to temperature deviation using PI D-algorithms, is calculated according to Pbase and Padj
To actual power Pneed, determine that output heating power is heated finally according to Pneed and Pmax.
2. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：In step 2)
In, described calculates maximum heating power P max, specially Pmax=maximum stream flows * (T- according to inflow temperature and maximum stream flow
Inflow temperature) * specific heat capacities.
3. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：In step 3)
In, Pbase=present flow rates * (T- inflow temperatures) * specific heat capacities.
4. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：In step 3)
In, the differential of the integration+Td* temperature deviations of Padj=Kp* temperature deviation+Ti* temperature deviations, the temperature deviation is to set out in advance
The difference of coolant-temperature gage and current leaving water temperature, Kp, Ti, Td are respectively proportionality coefficient, integration time constant and derivative time constant.
5. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：In step 3)
In, Pneed=Pbase+Padj.
6. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：In step 3)
In, finally select smaller value in Pneed and Pmax to be heated as the heating power of output.
7. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：The electronics is sat
Closet is determined with the maximum stream flow by water route reversal valve switching water discharging pattern, the present flow rate by water exit mode.
8. the heated at constant temperature control method of a kind of the electronic toilet as claimed in claim 1, it is characterised in that：By being arranged at
Inflow temperature sensor and leaving water temperature sensors in water tank detects respectively inflow temperature and leaving water temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510150741.2A CN104898738B (en) | 2015-04-01 | 2015-04-01 | Constant temperature heating control method for electronic toilet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150741.2A CN104898738B (en) | 2015-04-01 | 2015-04-01 | Constant temperature heating control method for electronic toilet |
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| CN104898738A CN104898738A (en) | 2015-09-09 |
| CN104898738B true CN104898738B (en) | 2017-04-19 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425865B (en) * | 2015-11-03 | 2017-10-27 | 上海科勒电子科技有限公司 | The control method and control system of anti-temperature overshot |
| CN107967010B (en) * | 2016-10-20 | 2020-03-24 | 樱花卫厨（中国）股份有限公司 | Intelligent temperature control system of water heater |
| CN106774529A (en) * | 2017-03-20 | 2017-05-31 | 泉州科牧智能厨卫有限公司 | A kind of method for heating and controlling of instant-heating-type constant-temperature water outlet |
| CN107844147B (en) * | 2017-09-18 | 2020-01-17 | 河北建筑工程学院 | Control system and control method for maximum control temperature of energy storage water tank |
| CN110953718B (en) * | 2018-09-26 | 2021-07-09 | 佛山市美的清湖净水设备有限公司 | Constant temperature control method and device and water purifier |
| CN109976143B (en) * | 2019-03-12 | 2021-09-21 | 广州市庆瑞电子科技有限公司 | Energy-saving control method for environment test equipment |
| CN111381620A (en) * | 2019-12-12 | 2020-07-07 | 贵州电网有限责任公司 | Anti-icing camera heating strategy software implementation scheme |
| CN114486312A (en) * | 2022-01-18 | 2022-05-13 | 台州市产品质量安全检测研究院 | Intelligent device and method for measuring seasonal energy consumption of toilet bowl |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4775041B2 (en) * | 2006-03-07 | 2011-09-21 | パナソニック株式会社 | Toilet seat device |
| CN201177768Y (en) * | 2007-12-19 | 2009-01-07 | 白勇 | Thermostatic control apparatus for electric water heater |
| CN101338937A (en) * | 2008-01-10 | 2009-01-07 | 刘关泰 | Quick heating electric water heater letting out hot water according to instruction |
| CN203016694U (en) * | 2012-12-20 | 2013-06-26 | 力霸工业有限公司 | Temperature-control type water supply system |
| CN103727677B (en) * | 2014-01-02 | 2016-06-15 | 福州斯狄渢电热水器有限公司 | A kind of control method of immediately heating water heater thermostatic control system |
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