CN117742426B - Intelligent control method and system for constant-temperature and constant-pressure water supply unit - Google Patents
Intelligent control method and system for constant-temperature and constant-pressure water supply unit Download PDFInfo
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Abstract
The application relates to the technical field of intelligent water supply, in particular to an intelligent control method and system of a constant-temperature and constant-pressure water supply unit, wherein the method comprises the following steps: detecting a temperature value and a speed value of water flow at a water outlet of the water supply unit, and detecting the action of a switch; constructing a fuzzy control model, taking the temperature and the speed of water flow at a water outlet as a first input factor and a second input factor of the fuzzy control model, and taking the heating temperature and the water inlet speed of a water supply unit as a first output factor and a second output factor of the fuzzy control model; detecting a temperature value and a speed value of water flow at a water outlet at a target time point, inputting a fuzzy control model, and outputting a target heating temperature value and a target water inlet speed value of a water supply unit; and controlling the water supply unit to heat and feed water. The application adaptively forms a fuzzy control model which meets the water supply requirement of users, thereby enabling the water supply temperature and speed of the water supply unit to be matched with the requirements of different users.
Description
Technical Field
The invention relates to the technical field of intelligent water supply, in particular to an intelligent control method and system of a constant-temperature and constant-pressure water supply unit.
Background
The stable constant temperature and pressure water supply needs are gaining more and more attention in life. In the prior art, a fuzzy control technology is introduced earlier to realize automatic control of the constant temperature and constant pressure water supply unit, and the common technical problem is that the adaptability of a fuzzy control mechanism is not strong, and the built-in fixed fuzzy control logic is difficult to adapt to the requirements of different users on the water supply temperature and speed. Therefore, the intelligent control method and the system for the water supply unit with constant temperature and constant pressure are needed to be provided, and the intelligent control method and the system can automatically adapt to water consumption habits of different users, so that the temperature and the speed of water supply meet the demands of the users.
Disclosure of Invention
In order to solve the technical problems, the application provides the intelligent control method and the system of the constant-temperature and constant-pressure water supply unit, which can automatically adapt to water consumption habits of different users and enable the temperature and the speed of water supply to meet the demands of the users.
In a first aspect, the present invention provides an intelligent control method for a constant temperature and constant pressure water supply unit, including: detecting temperature values and speed values of water flow at a water outlet of a water supply unit at a plurality of preset time points, and detecting actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet in a time interval with preset length after the plurality of time points; constructing a fuzzy control model, taking the temperature and the speed of water flow at a water outlet as a first input factor and a second input factor of the fuzzy control model, taking the heating temperature and the water inlet speed of the water supply unit as a first output factor and a second output factor of the fuzzy control model, wherein a first fuzzy discourse field is set for the first input factor according to the maximum value and the minimum value of the temperature values of the water flow at a plurality of time points, a second fuzzy discourse field is set for the second input factor according to the maximum value and the minimum value of the speed values of the water flow at a plurality of time points, a second fuzzy discourse field is set for the second input factor, a plurality of first fuzzy discourse subsets are set for the first fuzzy discourse field according to the temperature values of the water flow at the water outlet at a plurality of time points, a plurality of third fuzzy discourse factors are set for the second fuzzy discourse field, a plurality of first fuzzy subsets are set for the second fuzzy discourse factors, a plurality of second fuzzy subsets are set for the third fuzzy subsets are set for the second fuzzy discourse factors, a plurality of fuzzy functions are set for the third fuzzy functions are set for the second fuzzy discourse factors, a plurality of sets are set for the third fuzzy functions are set for the second fuzzy functions, and a plurality of sets are set for the second fuzzy functions, and a plurality of the first fuzzy functions are set, setting fuzzy rules by the plurality of second fuzzy subsets, the plurality of third fuzzy subsets and the plurality of fourth fuzzy subsets; detecting a temperature value and a speed value of water flow at a water outlet at a target time point, inputting the temperature value and the speed value into the fuzzy control model, and outputting a target heating temperature value and a target water inlet speed value of the water supply unit by the fuzzy control model; and controlling the water supply unit to heat according to the target heating temperature value, and controlling the water supply unit to feed water according to the target water feeding speed value.
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, the setting a plurality of first fuzzy subsets for the first fuzzy theory area according to intervals where temperature values of the water outlet water flow corresponding to different actions of adjusting the temperature of the water outlet water flow by the switch are located includes: for the ith temperature regulating action of regulating the temperature of the water flow at the water outlet by the switch, counting n temperature values corresponding to the ith temperature regulating actionTo/>; Calculating the core temperature value/>, corresponding to the ith temperature adjustment action, of the first fuzzy subsetWherein/>Representing a j-th temperature value of the n temperature values; calculating a first fuzzy subset corresponding to the ith temperature adjustment action，And/>Wherein/>Indicating that the n temperature values are less than/>/>, Of m temperature values of (2)Temperature value/>Indicating that the n temperature values are less than/>/>, Of n-m temperature valuesA plurality of temperature values; the setting a plurality of second fuzzy subsets for the second fuzzy theory domain according to intervals where the speed values of the water outlet water flow corresponding to different actions of adjusting the speed of the water outlet water flow by the switch are located comprises: for the ith speed adjusting action of the switch for adjusting the speed of the water flow at the water outlet, counting p speed values/>, corresponding to the ith speed adjusting actionTo/>; Calculating a core speed value/>, of a second fuzzy subset corresponding to the ith speed adjustment actionWherein/>Representing a j-th speed value of the p speed values; calculating a second fuzzy subset corresponding to the ith speed adjusting action，Wherein/>Representing that the p velocity values are less than/>/>, Of q velocity valuesVelocity value/>Representing that the p velocity values are less than/>/>, Of the p-q velocity valuesA speed value.
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, setting a plurality of first fuzzy subsets for the first fuzzy theory area according to intervals where temperature values of the water outlet water flow corresponding to different actions of adjusting the temperature of the water outlet water flow by the switch are located further includes: for the first fuzzy subset corresponding to the ith temperature adjustment actionAnd a first fuzzy subset/>, corresponding to an i-1 th temperature adjustment actionJudge/>And/>Whether or not the same; at/>And/>When not identical, for the/>And/>Correction is carried out, and/>, obtained after correctionWherein, the method comprises the steps of, wherein,For the i-1 th temperature adjustment action, the first fuzzy subset is smaller than the core temperature value/>Temperature value number of (2); the setting of the plurality of second fuzzy subsets for the second fuzzy theory domain according to the interval where the speed value of the water outlet water flow corresponding to different actions of adjusting the speed of the water outlet water flow according to the switch is located further comprises: for the second fuzzy subset/>, corresponding to the ith speed adjustment actionAnd a second fuzzy subset/>, corresponding to the i-1 th speed adjustment actionJudge/>And/>Whether or not the same; at/>And (3) withWhen not identical, for the/>And/>Correction is carried out, and the obtained correctionWherein/>Less than its core speed value/>, in a second fuzzy subset corresponding to the i-1 th speed adjustment actionSpeed value number of (c).
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, the constructing a first membership function for the first input factor according to distribution conditions of temperature values of water flow at the water outlet at the multiple time points in the multiple first fuzzy subsets includes: a first fuzzy subset corresponding to the ith temperature adjusting actionDividing into z1 segments, and counting the number of temperature values in each segment, wherein the number of temperature values in the x segment is/>; Constructing a corresponding first membership function for the first fuzzy subset corresponding to the ith temperature adjustment actionWherein t represents the temperature, pag (t) represents the fragment at which the temperature t is located,/>Is a preset first offset value; the constructing a second membership function for the second input factor according to the distribution condition of the velocity values of the water flow at the water outlet in the second fuzzy subsets at the time points comprises: a second fuzzy subset/>, corresponding to the ith speed adjusting actionDividing into z2 segments, and counting the number of speed values in each segment, wherein the number of speed values in the x segment is/>; Constructing a corresponding second membership function/>, for a second fuzzy subset corresponding to the ith speed adjustment actionWherein v represents the velocity, pag (v) represents the segment where velocity v is located,/>Is a preset first offset value.
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, the first fuzzy subset corresponding to the ith temperature adjustment action is setDividing into z1 segments includes: dividing the first fuzzy subset corresponding to the ith temperature adjustment action into segments according to a preset temperature interval, and amplifying the temperature interval and re-dividing the segments when the number of temperature values corresponding to any segment is found to be 0; the second fuzzy subset/>, corresponding to the ith speed adjusting actionDividing into z2 segments includes: after the second fuzzy subset corresponding to the ith speed adjusting action is divided into fragments according to a preset speed interval, when the number of speed values corresponding to any fragment is found to be 0, the speed interval is amplified and the fragment division is carried out again.
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, the first fuzzy subset corresponding to the ith temperature adjustment action is setDividing into z1 segments includes: setting a temperature interval according to the heating precision of the water supply unit; dividing a first fuzzy subset corresponding to the ith temperature adjustment action into segments according to the temperature interval; the second fuzzy subset/>, corresponding to the ith speed adjusting actionDividing into z2 segments includes: setting a speed interval according to the water inlet precision of the water supply unit; and dividing the second fuzzy subset corresponding to the ith speed adjusting action into fragments according to the speed interval.
Optionally, in the foregoing intelligent control method for a constant-temperature and constant-pressure water supply unit, the controlling heating of the water supply unit according to the target heating temperature value includes: acquiring A historical target heating temperature values, and calculating heating trend amplitude values based on the A historical target heating temperature values
And/>A-1 th historical target heating temperature value and a-1 th historical target heating temperature value in the A historical target heating temperature values; for the target heating temperature value/>Correcting according to corrected temperature value/>Heating is performed, wherein/(For a preset first weight value, K is a preset amplification factor,/>Delay time of the water supply unit; the controlling the water supply unit to feed water according to the target water feeding speed value comprises the following steps: b historical target water inflow speed values are obtained, and water inflow trend amplitude values are calculated based on the B historical target water inflow speed values，/>And/>B and B-1 th historical target water inlet speed values in the B historical target water inlet speed values; for the target water inlet velocity value/>Correcting according to the corrected speed valueExecuting water intake, wherein-For a preset second weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
In a second aspect, the present invention provides an intelligent control system for a constant temperature and pressure water supply unit, comprising: the device comprises a first detection module, a second detection module and a control module, wherein the first detection module detects temperature values and speed values of water flow at a water outlet of a water supply unit at a plurality of preset time points, and detects actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet within a time interval of a preset length after the plurality of time points; a model construction module for constructing a fuzzy control model, taking the temperature and the speed of the water flow at the water outlet as a first input factor and a second input factor of the fuzzy control model, taking the heating temperature and the water inlet speed of the water supply unit as a first output factor and a second output factor of the fuzzy control model, setting a first fuzzy theory for the first input factor according to the maximum value and the minimum value of the temperature values of the water flow at the water outlet at a plurality of time points, setting a second fuzzy theory for the second input factor according to the maximum value and the minimum value of the speed values of the water flow at the water outlet at the plurality of time points, setting a plurality of first fuzzy subsets for the first fuzzy theory according to intervals where the temperature values of the water flow at the water outlet corresponding to different actions of regulating the temperature of the water flow at the water outlet by the switch are located, setting a plurality of second fuzzy subsets for the second fuzzy discourse domain according to intervals of speed values of the water outlet water flow corresponding to different actions of the switch adjusting the speed of the water outlet water flow, constructing a first membership function for the first input factor according to the distribution condition of the temperature values of the water outlet water flow in the plurality of time points in the plurality of first fuzzy subsets, constructing a second membership function for the second input factor according to the distribution condition of the speed values of the water outlet water flow in the plurality of time points in the plurality of second fuzzy subsets, constructing a third fuzzy discourse domain for the first output factor, setting a plurality of third fuzzy subsets and third membership functions, constructing a fourth fuzzy discourse domain for the second output factor, setting a plurality of fourth fuzzy subsets and fourth membership functions, setting a fuzzy rule based on the plurality of first fuzzy subsets, the plurality of second fuzzy subsets, the plurality of third fuzzy subsets, the plurality of fourth fuzzy subsets; the second detection module is used for detecting the temperature value and the speed value of the water flow at the water outlet at a target time point, inputting the temperature value and the speed value into the fuzzy control model, and outputting the target heating temperature value and the target water inlet speed value of the water supply unit by the fuzzy control model; and the control execution module is used for controlling the water supply unit to heat according to the target heating temperature value and controlling the water supply unit to feed water according to the target water feeding speed value.
The technical scheme provided by the invention has at least one or more of the following beneficial effects:
Compared with the prior art, the method has the most remarkable difference that based on the actual water supply temperature value and the speed value of the water supply unit, a fuzzy control model is adaptively constructed, particularly, a first fuzzy domain reflecting temperature control is adaptively constructed, a first fuzzy subset division is completed, a first membership function is constructed, a second fuzzy domain reflecting speed control is adaptively constructed, a second fuzzy subset division is completed, and a second membership function is constructed.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing embodiments of the present application in more detail with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.
FIG. 1 is a flow chart of an intelligent control method of a constant temperature and pressure water supply unit according to an embodiment of the application;
FIG. 2 is a partial flow chart of an intelligent control method of a constant temperature and constant pressure water supply unit according to an embodiment of the application;
FIG. 3 is another partial flow chart of an intelligent control method of a constant temperature and pressure water supply unit according to an embodiment of the present application;
FIG. 4 is a further partial flow chart of a method for intelligent control of a constant temperature and pressure water supply unit according to an embodiment of the present application;
fig. 5 is a block diagram of an intelligent control system of a constant temperature and pressure water supply unit according to an embodiment of the present application.
Detailed Description
Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, in one embodiment of the present invention, an intelligent control method for a constant temperature and constant pressure water supply unit is provided, including:
Step S110, detecting temperature values and speed values of water flow at a water outlet of the water supply unit at a plurality of preset time points, and detecting actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet within a time interval of a preset length after the plurality of time points.
In this embodiment, a plurality of temperature values and speed values of the actual water supply of the water supply unit are detected and obtained, the actual condition of the water used by the user is reflected, and the collected adjustment actions of the switch on the water supply temperature and speed reflect the cognition of the user on the water supply temperature and speed.
Step S120, a fuzzy control model is built, the temperature and the speed of water flow at a water outlet are used as a first input factor and a second input factor of the fuzzy control model, and the heating temperature and the water inlet speed of a water supply unit are used as a first output factor and a second output factor of the fuzzy control model.
In this embodiment, constant-temperature water supply is realized by taking the heating temperature of the water supply unit as an output factor, and constant-pressure water supply is realized by taking the water inlet speed of the water supply unit as an output factor.
As shown in fig. 2, step S120 includes:
Step S1210, setting a first fuzzy domain for the first input factor according to the maximum and minimum values of the temperature values of the water flow at the water outlet at a plurality of time points, and setting a second fuzzy domain for the second input factor according to the maximum and minimum values of the speed values of the water flow at the water outlet at a plurality of time points.
In this embodiment, remarkably different from the prior art, the first fuzzy theory reflecting the water supply temperature and the second fuzzy theory reflecting the water supply speed are reasonably set based on the temperature and the speed of the user when actually using water.
Step S1220, a plurality of first fuzzy subsets are set for the first fuzzy theory according to the intervals of the temperature values of the water outlet flows corresponding to the different actions of the temperature of the water outlet flows adjusted by the switch, and a plurality of second fuzzy subsets are set for the second fuzzy theory according to the intervals of the speed values of the water outlet flows corresponding to the different actions of the speed of the water outlet flows adjusted by the switch.
In this embodiment, remarkably different from the prior art, the action of adjusting the water supply temperature by the switch reflects the cognition of the user on the current water supply temperature, for example, when the water temperature is reduced by the switch, the user considers that the current water supply temperature is higher, so as to divide a fuzzy subset with high water supply temperature, so that a plurality of first fuzzy subsets obtained by dividing in this embodiment are more matched with the water demand of the user; the action of adjusting the water supply speed by the switch reflects the cognition of the user on the current water supply speed, for example, if the water is turned off by the switch, the current water supply speed is considered to be higher by the user, so that a fuzzy subset with the 'water supply speed being higher' is divided, and therefore, a plurality of second fuzzy subsets obtained by dividing in the embodiment are more matched with the water demand of the user.
Step S1230, a first membership function is constructed for the first input factor according to the distribution of the temperature values of the water flow at the water outlet in the plurality of time points in the plurality of first fuzzy subsets, and a second membership function is constructed for the second input factor according to the distribution of the speed values of the water flow at the water outlet in the plurality of time points in the plurality of second fuzzy subsets.
In this embodiment, remarkably different from the prior art, the membership functions are not set for the first input factor reflecting the water supply temperature and the second input factor reflecting the water supply speed according to common experience, but rather the membership functions are reasonably designed based on the long-time accumulated judgment of the water temperature and the speed by the user, so as to ensure that the calculated membership degree is more matched with the judgment standard of the user.
Step S1240, a third fuzzy domain is constructed for the first output factor and a plurality of third fuzzy subsets and third membership functions are set, a fourth fuzzy domain is constructed for the second output factor and a plurality of fourth fuzzy subsets and fourth membership functions are set, and fuzzy rules are set based on the plurality of first fuzzy subsets, the plurality of second fuzzy subsets, the plurality of third fuzzy subsets, and the plurality of fourth fuzzy subsets.
In the present embodiment, the design of the output side and the fuzzy rule is not limited, and for example, when the "water supply temperature is high" and the "water supply speed is high", the rule of "maintaining the heating temperature" and "accelerating the water intake speed" is designed.
And S130, detecting the temperature value and the speed value of the water flow at the water outlet at a target time point, inputting a fuzzy control model, and outputting a target heating temperature value and a target water inlet speed value of the water supply unit by the fuzzy control model.
In the embodiment, silicic acid with a target heating temperature value and a target water inlet speed value of the water supply unit can be realized by referring to a fuzzy control principle in the prior art.
And step S140, controlling the water supply unit to heat according to the target heating temperature value, and controlling the water supply unit to feed water according to the target water feeding speed value.
Specifically, controlling the heating may include:
(1) Acquiring A historical target heating temperature values, and calculating heating trend amplitude based on the A historical target heating temperature values ，/>And/>A and a-1 th historical target heating temperature values among the a historical target heating temperature values.
(2) For target heating temperature valueCorrecting according to the corrected temperature value
Heating is performed, wherein/(For a preset first weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
According to the technical scheme of the embodiment, the influence of the hysteresis time on heating control and the compensation calculation on the heating temperature are estimated by considering the hysteresis time existing between the detection and the output of the water supply unit and combining the heating trend amplitude reflecting the heating trend, so that the accuracy of the heating control is improved.
Specifically, controlling the water intake may include:
(1) B historical target water inflow speed values are obtained, and water inflow trend amplitude values are calculated based on the B historical target water inflow speed values ，/>And/>B and B-1 historical target water inlet speed values in the B historical target water inlet speed values.
(2) For the target water inlet speed valueCorrection is carried out according to the corrected speed value/>Executing water intake, wherein-For a preset second weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
According to the technical scheme of the embodiment, the influence of the hysteresis time on water inflow control and the compensation calculation on the water inflow speed are estimated by considering the hysteresis time existing between the detection and the output of the water supply unit and combining the water inflow trend amplitude reflecting the water inflow trend, so that the accuracy of water inflow control is improved.
Compared with the prior art, the most obvious difference of the technical scheme of the embodiment is that a fuzzy control model is adaptively constructed based on the actual water supply temperature value and the speed value of the water supply unit, particularly, a first fuzzy domain reflecting temperature control is adaptively constructed, a first fuzzy subset division is completed, a first membership function is constructed, a second fuzzy domain reflecting speed control is adaptively constructed, a second fuzzy subset division is completed, and a second membership function is constructed, and the technical scheme of the embodiment actually adaptively forms the fuzzy control model meeting the water supply requirements of users because the actual water supply temperature value and the speed value of the water supply unit reflect the actual water consumption habits of users, so that the water supply temperature and the speed of the water supply unit can be matched with the requirements of different users.
As shown in fig. 3, in an embodiment of the present invention, an intelligent control method of a constant temperature and constant pressure water supply unit is provided, and compared to the foregoing embodiment, step S1220 includes:
Step S310, counting n temperature values corresponding to the ith temperature adjustment action for switching and adjusting the temperature of the water flow at the water outlet To/>。
Step S320, calculating the core temperature value of the first fuzzy subset corresponding to the ith temperature adjustment actionWherein/>Represents the j-th temperature value of the n temperature values.
Step S330, calculating a first fuzzy subset corresponding to the ith temperature adjustment action，And/>Wherein/>Indicating that n temperature values are less than/>/>, Of m temperature values of (2)Temperature value/>Indicating that n temperature values are less than/>/>, Of n-m temperature valuesA temperature value.
According to the technical scheme of the embodiment, a formula for determining the first fuzzy subset core and then determining the boundary of the first fuzzy subset is innovatively designed, and the divided fuzzy subset boundary is not limited to the detected temperature value, but reasonably calculated based on the high and low temperature distribution conditions at two sides of the core value, so that the division of the first fuzzy subset is not limited by the actual detected temperature.
Step S340, counting p speed values corresponding to the ith speed adjusting action for switching and adjusting the speed of the water flow at the water outletTo/>。
Step S350, calculating the core speed value of the second fuzzy subset corresponding to the ith speed adjustment actionWherein/>Represents the j-th speed value of the p speed values.
Step S360, calculating a second fuzzy subset corresponding to the ith speed adjusting action，And/>Wherein/>Representing p velocity values less than/>/>, Of q velocity valuesVelocity value/>Representing p velocity values less than/>/>, Of the p-q velocity valuesA speed value.
According to the technical scheme of the embodiment, a formula for determining the core of the second fuzzy subset and determining the boundary of the second fuzzy subset is innovatively designed, and the divided fuzzy subset boundary is not limited to the detected speed value, but reasonably calculated based on the fast and slow speed distribution conditions at two sides of the core value, so that the division of the second fuzzy subset is not limited by the actual detection speed.
In one embodiment of the present invention, an intelligent control method for a constant temperature and constant pressure water supply unit is provided, and compared with the foregoing embodiment, the intelligent control method for a constant temperature and constant pressure water supply unit in this embodiment further includes:
(1) A first fuzzy subset corresponding to the ith temperature adjustment action And a first fuzzy subset/>, corresponding to an i-1 th temperature adjustment actionJudge/>And/>Whether or not the same.
(2) At the position ofAnd/>When not identical, pair/>And/>Correction is carried out, and the obtained correctionWherein/>Less than its core temperature value/>, in a first fuzzy subset corresponding to the i-1 th thermostat actionTemperature value number of (2).
According to the technical scheme of the embodiment, when the user contradicts the judgment of the water temperature, for example, the water temperature at a lower temperature is considered to be high, the water temperature at a higher temperature is considered to be low, the division of the first fuzzy subsets is easily influenced, for example, an interval exists between two adjacent first fuzzy subsets, the two adjacent first fuzzy subsets are seamlessly connected based on the formula, the boundary of the corrected first fuzzy subset is closer to one side with more actual detection values, and the boundary of the corrected first fuzzy subset is more in line with actual conditions.
(3) A second fuzzy subset corresponding to the ith speed adjusting actionAnd a second fuzzy subset/>, corresponding to the i-1 th speed adjustment actionJudge/>And/>Whether or not the same.
(4) At the position ofAnd/>When not identical, pair/>And/>Correction is carried out, and/>, obtained after correctionWherein/>Less than its core speed value/>, in a second fuzzy subset corresponding to the i-1 st speed adjustment actionSpeed value number of (c).
According to the technical scheme of the embodiment, when the user contradicts the judgment of the water supply speed, the division of the second fuzzy subsets is easy to influence, for example, the adjacent two second fuzzy subsets are separated, the adjacent two second fuzzy subsets are seamlessly connected based on the formula, and the modified second fuzzy subset boundary is closer to one side with more actual detection values, so that the modified second fuzzy subset boundary is more in line with the actual situation.
As shown in fig. 4, in an embodiment of the present invention, an intelligent control method of a constant temperature and constant pressure water supply unit is provided, and compared to the foregoing embodiment, step S1230 includes:
step S410, the first fuzzy subset corresponding to the ith temperature adjustment action Dividing into z1 segments, and counting the number of temperature values in each segment, wherein the number of temperature values in the x segment is/>。
Specifically, after the first fuzzy subset corresponding to the ith temperature adjustment action is divided into segments according to a preset temperature interval, when the number of temperature values corresponding to any one segment is found to be 0, the temperature interval is amplified and segment division is performed again; or according to the heating precision of the water supply unit, setting a temperature interval, and dividing the first fuzzy subset corresponding to the ith temperature adjusting action into segments according to the temperature interval.
In this embodiment, two temperature interval setting modes are provided, one is to adaptively set a temperature interval, and realize automatic optimization of the temperature interval by excluding unreasonable conditions of segments without temperature values, and the other is to set the temperature interval based on the heating precision of the water supply unit, so that the segments obtained by dividing the first fuzzy subset are matched with the heating precision of the water supply unit, which is favorable for matching the precision of the first membership function calculated later with the heating precision of the water supply unit, so as to realize refined control of the water supply temperature.
Step S420, constructing a corresponding first membership function for the first fuzzy subset corresponding to the ith temperature adjustment actionWherein t represents the temperature, pag (t) represents the fragment at which the temperature t is located,/>Is a preset first offset value.
According to the technical scheme of the embodiment, the number of the temperature values in the segment accurately reflects the degree of association tightness between the temperature values in the segment and the first fuzzy subset, which is equivalent to the degree of membership with the first fuzzy subset, so that the degree of membership of different temperature values in the first fuzzy subset can be accurately calculated based on the formula.
Step S430, the second fuzzy subset corresponding to the ith speed adjusting actionDividing into z2 segments, and counting the number of speed values in each segment, wherein the number of speed values in the x segment is/>。
Specifically, after the second fuzzy subset corresponding to the ith speed adjustment action is divided into segments according to a preset speed interval, when the number of speed values corresponding to any segment is found to be 0, the speed interval is amplified and segment division is carried out again; or setting a speed interval according to the water inlet precision of the water supply unit, and dividing the second fuzzy subset corresponding to the ith speed adjusting action into segments according to the speed interval.
In this embodiment, two speed interval setting modes are provided, one is to adaptively set a speed interval, and realize automatic optimization of the speed interval by excluding unreasonable situations of segments without speed values, and the other is to set the speed interval based on water inlet precision of the water supply unit, so that segments obtained by dividing the second fuzzy subset are matched with the water inlet precision of the water supply unit, which is favorable for matching the precision of the second membership function calculated subsequently with the water inlet precision of the water supply unit, so as to realize refined control of the water supply speed.
Step S440, constructing a corresponding second membership function for the second fuzzy subset corresponding to the ith speed adjustment actionWherein v represents the velocity, pag (v) represents the segment where velocity v is located,/>Is a preset first offset value.
According to the technical scheme of the embodiment, the number of the speed values in the segment accurately reflects the association tightness degree between the speed values in the segment and the second fuzzy subset, which is equivalent to the membership degree of the second fuzzy subset, so that the membership degrees of different speed values in the second fuzzy subset can be accurately calculated based on the formula.
As shown in fig. 5, in one embodiment of the present invention, an intelligent control system for a constant temperature and constant pressure water supply unit is provided, including:
The first detection module 510 detects temperature values and speed values of water flow at a water outlet of the water supply unit at a plurality of preset time points, and detects actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet within a time interval of a preset length after the plurality of time points.
In this embodiment, a plurality of temperature values and speed values of the actual water supply of the water supply unit are detected and obtained, the actual condition of the water used by the user is reflected, and the collected adjustment actions of the switch on the water supply temperature and speed reflect the cognition of the user on the water supply temperature and speed.
The model construction module 520 constructs a fuzzy control model, takes the temperature and the speed of the water flow at the water outlet as a first input factor and a second input factor of the fuzzy control model, and takes the heating temperature and the water inlet speed of the water supply unit as a first output factor and a second output factor of the fuzzy control model.
In this embodiment, constant-temperature water supply is realized by taking the heating temperature of the water supply unit as an output factor, and constant-pressure water supply is realized by taking the water inlet speed of the water supply unit as an output factor.
Setting a first fuzzy theory domain for the first input factor according to the maximum and minimum values of the temperature values of the water flow at the water outlet at a plurality of time points, and setting a second fuzzy theory domain for the second input factor according to the maximum and minimum values of the speed values of the water flow at the water outlet at a plurality of time points.
In this embodiment, remarkably different from the prior art, the first fuzzy theory reflecting the water supply temperature and the second fuzzy theory reflecting the water supply speed are reasonably set based on the temperature and the speed of the user when actually using water.
According to the intervals of the temperature values of the water outlet flows corresponding to different actions of the water outlet flow with the temperature regulated by the switch, a plurality of first fuzzy subsets are set for the first fuzzy theory, and according to the intervals of the speed values of the water outlet flows corresponding to different actions of the water outlet flow with the speed regulated by the switch, a plurality of second fuzzy subsets are set for the second fuzzy theory.
In this embodiment, remarkably different from the prior art, the action of adjusting the water supply temperature by the switch reflects the cognition of the user on the current water supply temperature, for example, when the water temperature is reduced by the switch, the user considers that the current water supply temperature is higher, so as to divide a fuzzy subset with high water supply temperature, so that a plurality of first fuzzy subsets obtained by dividing in this embodiment are more matched with the water demand of the user; the action of adjusting the water supply speed by the switch reflects the cognition of the user on the current water supply speed, for example, if the water is turned off by the switch, the current water supply speed is considered to be higher by the user, so that a fuzzy subset with the 'water supply speed being higher' is divided, and therefore, a plurality of second fuzzy subsets obtained by dividing in the embodiment are more matched with the water demand of the user.
According to the distribution condition of the temperature values of the water flow at the water outlet at a plurality of time points in a plurality of first fuzzy subsets, a first membership function is constructed for the first input factors, and according to the distribution condition of the speed values of the water flow at the water outlet at a plurality of time points in a plurality of second fuzzy subsets, a second membership function is constructed for the second input factors.
In this embodiment, remarkably different from the prior art, the membership functions are not set for the first input factor reflecting the water supply temperature and the second input factor reflecting the water supply speed according to common experience, but rather the membership functions are reasonably designed based on the long-time accumulated judgment of the water temperature and the speed by the user, so as to ensure that the calculated membership degree is more matched with the judgment standard of the user.
And constructing a third fuzzy domain for the first output factors, setting a plurality of third fuzzy subsets and third membership functions, constructing a fourth fuzzy domain for the second output factors, setting a plurality of fourth fuzzy subsets and fourth membership functions, and setting fuzzy rules based on the plurality of first fuzzy subsets, the plurality of second fuzzy subsets, the plurality of third fuzzy subsets and the plurality of fourth fuzzy subsets.
In the present embodiment, the design of the output side and the fuzzy rule is not limited, and for example, when the "water supply temperature is high" and the "water supply speed is high", the rule of "maintaining the heating temperature" and "accelerating the water intake speed" is designed.
The second detection module 530 detects the temperature value and the speed value of the water flow at the water outlet at the target time point, inputs the temperature value and the speed value into the fuzzy control model, and outputs the target heating temperature value and the target water inlet speed value of the water supply unit through the fuzzy control model.
In the embodiment, silicic acid with a target heating temperature value and a target water inlet speed value of the water supply unit can be realized by referring to a fuzzy control principle in the prior art.
The control execution module 540 controls the water supply unit to heat according to the target heating temperature value and controls the water supply unit to feed water according to the target water feed speed value.
Specifically, controlling the heating may include:
(1) Acquiring A historical target heating temperature values, and calculating heating trend amplitude based on the A historical target heating temperature values ，/>And/>A and a-1 th historical target heating temperature values among the a historical target heating temperature values.
(2) For target heating temperature valueCorrecting according to corrected temperature value/>Heating is performed, wherein/(For a preset first weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
According to the technical scheme of the embodiment, the influence of the hysteresis time on heating control and the compensation calculation on the heating temperature are estimated by considering the hysteresis time existing between the detection and the output of the water supply unit and combining the heating trend amplitude reflecting the heating trend, so that the accuracy of the heating control is improved.
Specifically, controlling the water intake may include:
(1) B historical target water inflow speed values are obtained, and water inflow trend amplitude values are calculated based on the B historical target water inflow speed values ，/>And/>B and B-1 historical target water inlet speed values in the B historical target water inlet speed values.
(2) For the target water inlet speed valueCorrection is carried out according to the corrected speed value/>Executing water intake, wherein-For a preset second weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
According to the technical scheme of the embodiment, the influence of the hysteresis time on water inflow control and the compensation calculation on the water inflow speed are estimated by considering the hysteresis time existing between the detection and the output of the water supply unit and combining the water inflow trend amplitude reflecting the water inflow trend, so that the accuracy of water inflow control is improved.
Compared with the prior art, the most obvious difference of the technical scheme of the embodiment is that a fuzzy control model is adaptively constructed based on the actual water supply temperature value and the speed value of the water supply unit, particularly, a first fuzzy domain reflecting temperature control is adaptively constructed, a first fuzzy subset division is completed, a first membership function is constructed, a second fuzzy domain reflecting speed control is adaptively constructed, a second fuzzy subset division is completed, and a second membership function is constructed, and the technical scheme of the embodiment actually adaptively forms the fuzzy control model meeting the water supply requirements of users because the actual water supply temperature value and the speed value of the water supply unit reflect the actual water consumption habits of users, so that the water supply temperature and the speed of the water supply unit can be matched with the requirements of different users.
The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.
The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.
Claims (8)
1. An intelligent control method of a constant temperature and constant pressure water supply unit is characterized by comprising the following steps:
Detecting temperature values and speed values of water flow at a water outlet of a water supply unit at a plurality of preset time points, and detecting actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet in a time interval with preset length after the plurality of time points;
Constructing a fuzzy control model, taking the temperature and the speed of water flow at the water outlet as a first input factor and a second input factor of the fuzzy control model, taking the heating temperature and the water inlet speed of the water supply unit as a first output factor and a second output factor of the fuzzy control model, wherein,
Setting a first fuzzy theory domain for the first input factor according to the maximum value and the minimum value of the temperature values of the water flow at the water outlet at the plurality of time points, setting a second fuzzy theory domain for the second input factor according to the maximum value and the minimum value of the speed values of the water flow at the water outlet at the plurality of time points,
Setting a plurality of first fuzzy subsets for the first fuzzy theory according to the intervals of the temperature values of the water outlet flow corresponding to different actions of the switch for adjusting the temperature of the water outlet flow, setting a plurality of second fuzzy subsets for the second fuzzy theory according to the intervals of the speed values of the water outlet flow corresponding to different actions of the switch for adjusting the speed of the water outlet flow,
Constructing a first membership function for the first input factor according to the distribution of the temperature values of the water flow at the water outlet in the first fuzzy subsets at the plurality of time points, constructing a second membership function for the second input factor according to the distribution of the speed values of the water flow at the water outlet in the second fuzzy subsets at the plurality of time points,
Constructing a third fuzzy domain for the first output factors and setting a plurality of third fuzzy subsets and third membership functions, constructing a fourth fuzzy domain for the second output factors and setting a plurality of fourth fuzzy subsets and fourth membership functions, and setting fuzzy rules based on the plurality of first fuzzy subsets, the plurality of second fuzzy subsets, the plurality of third fuzzy subsets and the plurality of fourth fuzzy subsets;
Detecting a temperature value and a speed value of water flow at a water outlet at a target time point, inputting the temperature value and the speed value into the fuzzy control model, and outputting a target heating temperature value and a target water inlet speed value of the water supply unit by the fuzzy control model;
and controlling the water supply unit to heat according to the target heating temperature value, and controlling the water supply unit to feed water according to the target water feeding speed value.
2. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 1, wherein the setting of the plurality of first fuzzy subsets for the first fuzzy theory comprises:
for the ith temperature regulating action of regulating the temperature of the water flow at the water outlet by the switch, counting n temperature values corresponding to the ith temperature regulating action To/>；
Calculating a core temperature value of the first fuzzy subset corresponding to the ith temperature adjustment actionWherein/>Representing a j-th temperature value of the n temperature values;
calculating a first fuzzy subset corresponding to the ith temperature adjustment action ，Wherein/>Indicating that the n temperature values are less than/>/>, Of m temperature values of (2)Temperature value/>Indicating that more than/>, of the n temperature values/>, Of n-m temperature valuesA plurality of temperature values;
The setting a plurality of second fuzzy subsets for the second fuzzy theory domain according to intervals where the speed values of the water outlet water flow corresponding to different actions of adjusting the speed of the water outlet water flow by the switch are located comprises:
For the ith speed adjusting action of the switch for adjusting the speed of the water flow at the water outlet, counting p speed values corresponding to the ith speed adjusting action To/>；
Calculating a core speed value of a second fuzzy subset corresponding to the ith speed adjustment actionWherein/>Representing a j-th speed value of the p speed values;
Calculating a second fuzzy subset corresponding to the ith speed adjustment action, ，/>，Wherein/>Representing that the p velocity values are less than/>/>, Of q velocity valuesVelocity value/>Indicating that more than/>, of the p velocity values/>First/>, of the individual velocity valuesA speed value.
3. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 2, wherein the setting of the plurality of first fuzzy subsets for the first fuzzy theory area according to the interval of the temperature value of the outlet water flow corresponding to different actions of the switch to adjust the temperature of the outlet water flow further comprises:
for the first fuzzy subset corresponding to the ith temperature adjustment action First/>First fuzzy subset/>, corresponding to the temperature regulating actionsJudge/>And/>Whether or not the same;
At the position of And/>When not identical, for the/>And/>Correction is carried out, and the obtained correctionWherein/>For the/>The first fuzzy subset corresponding to the temperature regulating action is smaller than the core temperature value/>, andTemperature value number of (2);
the setting of the plurality of second fuzzy subsets for the second fuzzy theory domain according to the interval where the speed value of the water outlet water flow corresponding to different actions of adjusting the speed of the water outlet water flow according to the switch is located further comprises:
For the second fuzzy subset corresponding to the ith speed adjusting action First/>Second fuzzy subset/>, corresponding to the speed adjusting actions，/>Judge/>And/>Whether or not the same;
At the position of And/>When not identical, for the/>And/>Correction is carried out, and the obtained correctionWherein/>For the/>Less than its core speed value/>, in a second fuzzy subset corresponding to the individual speed adjustment actionsSpeed value number of (c).
4. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 2, wherein the constructing a first membership function for the first input factor according to the distribution of the temperature values of the water flow at the water outlet at the plurality of time points in the plurality of first fuzzy subsets comprises:
a first fuzzy subset corresponding to the ith temperature adjusting action Divided into/>Counting the number of temperature values in each segment, wherein the number is at the (th) >The number of temperature values in each segment is/>；
Constructing a corresponding first membership function for the first fuzzy subset corresponding to the ith temperature adjustment actionWherein t represents temperature,/>Representing the segment where the temperature t is located,/>Is a preset first offset value;
The constructing a second membership function for the second input factor according to the distribution condition of the velocity values of the water flow at the water outlet in the second fuzzy subsets at the time points comprises:
A second fuzzy subset corresponding to the ith speed adjusting action Divided into/>Counting the number of speed values in each segment, wherein the number of speed values in the xth segment is/>；
Constructing a corresponding second membership function for a second fuzzy subset corresponding to the ith speed adjustment actionWhere v represents the velocity,/>Representing the segment where the velocity v is located,/>Is a preset second bias value.
5. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 4, wherein the i-th temperature adjustment action is performed by a first fuzzy subsetDividing into z1 segments includes:
dividing the first fuzzy subset corresponding to the ith temperature adjustment action into segments according to a preset temperature interval, and amplifying the temperature interval and re-dividing the segments when the number of temperature values corresponding to any segment is found to be 0;
The second fuzzy subset corresponding to the ith speed adjusting action Dividing into z2 segments includes:
after the second fuzzy subset corresponding to the ith speed adjusting action is divided into fragments according to a preset speed interval, when the number of speed values corresponding to any fragment is found to be 0, the speed interval is amplified and the fragment division is carried out again.
6. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 4, wherein the i-th temperature adjustment action is performed by a first fuzzy subsetDividing into z1 segments includes:
setting a temperature interval according to the heating precision of the water supply unit;
dividing a first fuzzy subset corresponding to the ith temperature adjustment action into segments according to the temperature interval;
The second fuzzy subset corresponding to the ith speed adjusting action Dividing into z2 segments includes:
setting a speed interval according to the water inlet precision of the water supply unit;
and dividing the second fuzzy subset corresponding to the ith speed adjusting action into fragments according to the speed interval.
7. The intelligent control method of a constant temperature and constant pressure water supply unit according to claim 1, wherein the controlling the water supply unit to heat according to the target heating temperature value comprises:
Acquiring A historical target heating temperature values, and calculating heating trend amplitude values based on the A historical target heating temperature values ，/>And/>A-1 th historical target heating temperature value and a-1 th historical target heating temperature value in the A historical target heating temperature values;
For the target heating temperature value Correcting according to corrected temperature value/>Heating is performed, wherein/(For a preset first weight value,/>For a preset amplification factor,/>Delay time of the water supply unit;
The controlling the water supply unit to feed water according to the target water feeding speed value comprises the following steps:
B historical target water inflow speed values are obtained, and water inflow trend amplitude values are calculated based on the B historical target water inflow speed values ，/>And/>B and B-1 th historical target water inlet speed values in the B historical target water inlet speed values;
For the target water inlet speed value Correction is carried out according to the corrected speed value/>Executing water intake, wherein-For a preset second weight value, K is a preset amplification factor,/>Is the delay time of the water supply unit.
8. An intelligent control system of a constant temperature and constant pressure water supply unit, which is characterized by comprising:
The device comprises a first detection module, a second detection module and a control module, wherein the first detection module detects temperature values and speed values of water flow at a water outlet of a water supply unit at a plurality of preset time points, and detects actions of a switch of the water supply unit for adjusting the temperature and speed of the water flow at the water outlet within a time interval of a preset length after the plurality of time points;
The model construction module constructs a fuzzy control model, takes the temperature and the speed of water flow at the water outlet as a first input factor and a second input factor of the fuzzy control model, takes the heating temperature and the water inlet speed of the water supply unit as a first output factor and a second output factor of the fuzzy control model,
Setting a first fuzzy theory domain for the first input factor according to the maximum value and the minimum value of the temperature values of the water flow at the water outlet at the plurality of time points, setting a second fuzzy theory domain for the second input factor according to the maximum value and the minimum value of the speed values of the water flow at the water outlet at the plurality of time points,
Setting a plurality of first fuzzy subsets for the first fuzzy theory according to the intervals of the temperature values of the water outlet flow corresponding to different actions of the switch for adjusting the temperature of the water outlet flow, setting a plurality of second fuzzy subsets for the second fuzzy theory according to the intervals of the speed values of the water outlet flow corresponding to different actions of the switch for adjusting the speed of the water outlet flow,
Constructing a first membership function for the first input factor according to the distribution of the temperature values of the water flow at the water outlet in the first fuzzy subsets at the plurality of time points, constructing a second membership function for the second input factor according to the distribution of the speed values of the water flow at the water outlet in the second fuzzy subsets at the plurality of time points,
Constructing a third fuzzy domain for the first output factors and setting a plurality of third fuzzy subsets and third membership functions, constructing a fourth fuzzy domain for the second output factors and setting a plurality of fourth fuzzy subsets and fourth membership functions, and setting fuzzy rules based on the plurality of first fuzzy subsets, the plurality of second fuzzy subsets, the plurality of third fuzzy subsets and the plurality of fourth fuzzy subsets;
The second detection module is used for detecting the temperature value and the speed value of the water flow at the water outlet at a target time point, inputting the temperature value and the speed value into the fuzzy control model, and outputting the target heating temperature value and the target water inlet speed value of the water supply unit by the fuzzy control model;
And the control execution module is used for controlling the water supply unit to heat according to the target heating temperature value and controlling the water supply unit to feed water according to the target water feeding speed value.
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