CN116107200A - Secondary water supply control system based on fuzzy PID algorithm - Google Patents
Secondary water supply control system based on fuzzy PID algorithm Download PDFInfo
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- CN116107200A CN116107200A CN202310167060.1A CN202310167060A CN116107200A CN 116107200 A CN116107200 A CN 116107200A CN 202310167060 A CN202310167060 A CN 202310167060A CN 116107200 A CN116107200 A CN 116107200A
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- 230000003993 interaction Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P.I., P.I.D.
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Abstract
The invention relates to the field of water supply equipment, in particular to a secondary water supply control system based on a fuzzy PID algorithm, which comprises a water consumption data acquisition module, a water supply data acquisition module, a calling module and a control end. The water supply flow of the water using end is obtained and known through the water using data obtaining module, the water supply flow is corrected by combining the current season, the region and the time period, then the water source information is obtained through the water supplying data obtaining module, the domestic water supply is in a multi-end distributed water supply mode, therefore, the water using and the water supplying are flexibly matched in a preset area through the calling module, finally, the control end is used for controlling each control pump to change pressure to a water supply threshold based on a fuzzy PID algorithm, the water supply is prevented from being influenced by overlarge fluctuation in pressure adjustment, the water pump is enabled to be slow in pressure rising when being started, impact on a pipeline is avoided, meanwhile, the stability of output pressure is guaranteed, the secondary water supply control system is enabled to be more perfect, and the secondary water supply control system is more economical.
Description
Technical Field
The invention relates to the field of water supply equipment, in particular to a secondary water supply control system based on a fuzzy PID algorithm.
Background
The secondary water supply is usually called as a form that a unit or a person stores and pressurizes urban public water supply or self-built facility water supply and supplies the water to users or users by virtue of pipelines, so that the secondary water supply is the only choice mode of the current high-rise water supply.
At present, a common sheet of the secondary water supply equipment adopts a constant pressure control system with one frequency and one pump and a control system with the same frequency and the same speed, and the control system has the advantages of soft start and soft stop, stable water supply pressure, electricity saving and the like, improves the reliability of the secondary water supply equipment, and better ensures the water use safety of users, but when the system is just started or when the difference between the target pressure and the actual pressure is large, the water supply network can generate a pressure impulse phenomenon, and meanwhile, pressure fluctuation, namely, the pressure impulse phenomenon is the overshoot phenomenon in PID control.
The pressure rise and the pressure fluctuation of the pipe network are always important parameters for measuring the stability of the secondary water supply control system, and the control effect of the existing control system is poor, so that the water supply effect cannot meet the expectations.
Disclosure of Invention
The invention aims to provide a secondary water supply control system based on a fuzzy PID algorithm, which aims to better perform secondary water supply and reduce pressure impact.
In order to achieve the above object, in a first aspect, the present invention provides a secondary water supply control system based on a fuzzy PID algorithm, which includes a water usage data acquisition module, a water supply data acquisition module, a calling module, and a control end, where the water usage data acquisition module, the water supply data acquisition module, the calling module, and the controller are sequentially connected;
the water data acquisition module is used for acquiring water supply flow of a water use end in a water supply range;
the water supply data acquisition module is used for acquiring water source information in a water supply range;
the calling module is used for matching water source information based on water supply flow;
and the control end is used for controlling each control pump to vary the pressure to the water supply threshold value based on the fuzzy PID algorithm.
The secondary water supply control system based on the fuzzy PID algorithm further comprises a detection module, wherein the detection module is used for detecting and alarming the stock of the water supply source.
The water supply system comprises a water supply data acquisition module, a water supply data acquisition module and a water supply threshold value acquisition module, wherein the water supply data acquisition module comprises a flow acquisition unit, an accumulation unit and a water supply target unit, the flow acquisition unit is used for acquiring water supply end flow data, the accumulation unit is used for accumulating all acquired flow data to obtain real-time water supply flow data, and the water supply target unit is used for obtaining the water supply threshold value based on the real-time water supply flow data.
The specific mode for acquiring the water end flow data is as follows: the output end of the user water gap flowmeter is electrically connected with the input end of the flow acquisition unit, and the user water gap flowmeter accurately calculates the water consumption of the user water outlet.
The water supply data acquisition module comprises an information acquisition unit and a water pump quantity control unit, wherein the information acquisition unit is used for acquiring all water source information in a water supply range, and the water source information comprises water supply tank capacity, position and control pump parameters; the water pump quantity control unit is used for controlling the running water pump based on the rated flow of the control pump and the water supply threshold value.
The specific mode of the water pump which is controlled to operate based on the rated flow of the control pump and the water supply threshold value is as follows: when the flow of the water inlet pipe network changes, the number of the water pumps put into operation is reduced or increased, so that the water supply system achieves the target operation effect.
The control end comprises a water outlet pressure sensor, a frequency converter, a control unit and a man-machine interaction device, wherein the water outlet pressure sensor is used for detecting the water outlet pressure of a control pump, the frequency converter is used for controlling the control pump, the control unit is used for establishing a binary continuous function relation between the absolute value of deviation of parameters and the absolute value of variation of the deviation by using a fuzzy set theory so as to control the frequency converter, and the man-machine interaction device is used for manually adjusting the parameters of the control pump by an administrator.
The human-computer interaction device comprises an identity recognition unit, a human-computer interface and an operation recorder, wherein the identity recognition unit is used for recognizing the identity of an administrator by adopting a biological characteristic recognition technology to log in the system, the human-computer interface is used for adjusting parameters of the administrator, and the operation recorder is used for recording the operation of a management officer.
In a second aspect, the present invention also provides a secondary water supply control method based on a fuzzy PID algorithm, including:
acquiring water supply flow of a water use end in a water supply range;
acquiring water source information in a water supply range;
matching water source information based on the water supply flow;
and controlling each control pump to vary the pressure to a water supply threshold value based on a fuzzy PID algorithm.
The invention discloses a secondary water supply control system based on a fuzzy PID algorithm, which comprises a water data acquisition module, a calling module and a control end. In daily life, people's water consumption is the biggest that appears the fluctuation, say in the aspect of life, cook in the day and the water consumption of washing one's face and rinsing one's mouth night, and receive the season influence, and the mill then water consumption is relevant and whole stable with the production condition, consequently through water data acquisition module can acquire and know the water supply flow of water end, can also combine current season, district and time quantum to revise water supply flow, later obtain water source information through water data acquisition module, wherein living water supply is the form of adopting the multi-terminal distributed water supply, consequently can be in predetermine the district through the matching of calling module flexibility in water consumption and water supply, finally adopt the control end is based on fuzzy PID algorithm control each control pump and is transformed to water supply threshold value, avoid producing too big fluctuation influence water supply when pressure adjustment, thereby make the water pump when starting, pressure rise very slowly, can not cause the impact to the pipeline, still guaranteed the stability of output pressure simultaneously, make secondary water supply control system more perfect, more economical.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a secondary water supply control system based on a fuzzy PID algorithm according to a first embodiment of the present invention.
Fig. 2 is a block diagram of a secondary water supply control system based on a fuzzy PID algorithm according to a second embodiment of the present invention.
Fig. 3 is a block diagram of a water data acquisition module according to a second embodiment of the present invention.
Fig. 4 is a block diagram of a water supply data acquisition module according to a second embodiment of the present invention.
Fig. 5 is a structural diagram of a control terminal of a second embodiment of the present invention.
Fig. 6 is a structural diagram of a man-machine interactive apparatus according to a second embodiment of the present invention.
Fig. 7 is a block diagram of a fuzzy PID control of a second embodiment of the present invention.
Fig. 8 is a flowchart of a secondary water supply control method based on a fuzzy PID algorithm of the present invention.
The system comprises a water consumption data acquisition module, a 102-water supply data acquisition module, a 103-calling module, a 104-control end, a 201-detection module, a 202-flow acquisition unit, a 203-accumulation unit, a 204-water supply target unit, a 205-information acquisition unit, a 206-water pump quantity control unit, a 207-water outlet pressure sensor, a 208-frequency converter, a 209-control unit, a 210-man-machine interaction device, a 211-identification unit, a 212-man-machine interface and a 213-operation recorder.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Referring to fig. 1, the present invention provides a secondary water supply control system based on a fuzzy PID algorithm:
the water consumption data acquisition system comprises a water consumption data acquisition module 101, a water supply data acquisition module 102, a calling module 103 and a control end 104, wherein the water consumption data acquisition module 101, the water supply data acquisition module 102, the calling module 103 and the controller are connected in sequence;
the water data acquisition module 101 is configured to acquire a water supply flow of a water use end in a water supply range;
the water supply data acquisition module 102 is configured to acquire water source information in a water supply range;
the calling module 103 is used for matching water source information based on water supply flow;
the control end 104 is used for controlling each control pump to change pressure to a water supply threshold value based on a fuzzy PID algorithm.
In this embodiment, in daily life, the water consumption of people is waved, for example, in terms of life, the water consumption of cooking and washing at night is the largest in one day and is affected by seasons, and the water consumption of factories is related to production conditions and is wholly stable, so that the water consumption of water ends can be obtained and known through the water consumption data obtaining module 101, the water consumption can be corrected by combining with the current seasons, regions and time periods, then the water supply data obtaining module 102 is used for obtaining water source information, wherein the domestic water supply is in the form of multi-terminal distributed water supply, and therefore, the water consumption and the water supply can be flexibly matched in a preset region through the calling module 103, finally, the control end 104 is used for controlling each control pump to change the water supply threshold based on a fuzzy PID algorithm, so that the water supply is prevented from being affected by excessive fluctuation in the pressure adjustment, the water pump is enabled to be slow in rising, the impact on the pipe network is avoided, meanwhile, the stability of the output pressure is ensured, and the secondary water supply control system is more perfect and economical.
Second embodiment
Referring to fig. 2 to 7, on the basis of the first embodiment, the present invention further provides a secondary water supply control system based on a fuzzy PID algorithm, where the secondary water supply control system based on the fuzzy PID algorithm further includes a detection module 201, where the detection module 201 is configured to detect and alarm the storage of a water supply source. The water supply may be insufficient, so that insufficient power supply may be provided, and the detection module 201 is configured to detect the condition of each water supply unit, and the specific mode may be that a water level sensor is used for monitoring.
The water data obtaining module 101 includes a flow obtaining unit 202, an accumulating unit 203 and a water supply target unit 204, where the flow obtaining unit 202 is configured to obtain water end flow data, the accumulating unit 203 is configured to accumulate all collected flow data to obtain real-time water supply flow data, and the water supply target unit 204 is configured to obtain a water supply threshold based on the real-time water supply flow data.
The water outlet flowmeter for the user is electrically connected with the input end of the controller at the output end, the water consumption of the water outlet of the user is accurately calculated by the water outlet flowmeter for the user, flow data are input into the controller, and the controller accumulates all collected flow data to obtain the water supply flow required by the user in the whole water supply range. The water supply threshold value is an upward floating value obtained based on historical data so as to meet the requirement of short-time water supply fluctuation, and water supply can be safer through the value.
The water supply data acquisition module 102 comprises an information acquisition unit 205 and a water pump quantity control unit 206, wherein the information acquisition unit 205 is used for acquiring all water source information in a water supply range, and the water source information comprises water supply tank capacity, position and control pump parameters; the water pump number control unit 206 is used for controlling the running water pumps based on the rated flow rate of the control pump and the water supply threshold value.
The specific mode of the water pump based on the rated flow of the control pump and the water supply threshold value control operation is as follows: when the flow of the water inlet pipe network changes, the number of the water pumps put into operation is reduced or increased, so that the water supply system achieves the target operation effect.
The control end 104 comprises a water outlet pressure sensor 207, a frequency converter 208, a control unit 209 and a man-machine interaction device 210, wherein the water outlet pressure sensor 207 is used for detecting the water outlet pressure of a control pump, the frequency converter 208 is used for controlling the control pump, the control unit 209 is used for establishing a binary continuous function relation between the absolute value of deviation of parameters and the absolute value of variation of the deviation by using a fuzzy set theory so as to control the frequency converter 208, and the man-machine interaction device 210 is used for manually adjusting the parameters of the control pump by an administrator.
The control center of the control unit 209 is a PLC, the PLC converts the pressure signal collected on site through an A/D conversion module, converts the output water pressure signal of 0-10V into a numerical value of 0-32000 and inputs the numerical value into the PLC for the fuzzy PID algorithm, the fuzzy PID algorithm is based on the conventional PID algorithm, and the parameter K is established by utilizing the fuzzy set theory p 、K i And K d Absolute value of deviation |e| and absolute value of deviation change |e c Binary continuous functional relation between I and K p ＝f 1 (|e|，|e c |)，K i ＝f 2 (|e|，|e c |)，f 3 (|e|，|e c I), a corresponding table array is firstly established in the PLC program according to the obtained fuzzy function relation, and the corresponding table array is formed according to different i e and e c Table lookup (rule table 1 below) is performed, and the core of building a table array is to summarize technical knowledge and practical operation experience of engineering designers. After looking up the table, outputting the corresponding parameters delta K p 、△K i And DeltaK d To the value of DeltaK obtained p 、△K i And DeltaK d The value of (2) is transmitted to a PID controller, an output value of 0-32000 is finally obtained after calculation, the value of 0-32000 is converted into a voltage signal of 0-10V through a D/A conversion module and is transmitted to a frequency converter 208 to serve as the starting frequency of the water pump, and therefore the water pump is operated through controlling the output frequency of the frequency converter 208, the control purpose is achieved, and a fuzzy PID control structure diagram is shown in FIG. 7.
TABLE 1 fuzzy rule Table of ΔKp, ΔKi and ΔKd
After the technology is adopted, when the water pump is started, the pressure rises slowly, the impact on a pipeline is avoided, meanwhile, the stability of output pressure is ensured, and the secondary water supply control system is more perfect and more economical. Compared with the conventional PID self-tuning algorithm, the technology overcomes the defects of the conventional PID and simple fuzzy control methods, and uses delta K p 、△K i And DeltaK d The fuzzy PID self-tuning algorithm effectively solves the problems of pressure overshoot and pressure fluctuation, and achieves better control effect
The man-machine interaction device 210 comprises an identity recognition unit 211, a man-machine interface 212 and an operation recorder 213, wherein the identity recognition unit 211 is used for recognizing the identity of an administrator by adopting a biological characteristic recognition technology to log in the system, the man-machine interface 212 is used for parameter adjustment of the administrator, and the operation recorder 213 is used for recording the operation of a management officer. Therefore, the operation condition of the manager can be recorded, so that the manager can operate more cautiously, the attribution of later responsibility is facilitated, and the system is enabled to run more stably.
Third embodiment
Referring to fig. 8, the present invention further provides a secondary water supply control method based on a fuzzy PID algorithm, including:
s101, acquiring water supply flow of a water use end in a water supply range;
through the water data acquisition module 101, the water supply flow of the water using end can be acquired and known, and the water supply flow can be corrected by combining the current season, region and time period.
S102, acquiring water source information in a water supply range;
and then the water source information is acquired by the water supply data acquisition module 102, wherein the domestic water supply is in the form of multi-terminal distributed water supply
S103, water source information is matched based on water supply flow;
flexibly matching water usage with water supply in a preset area through the calling module 103
S104, controlling each control pump to change the pressure to the water supply threshold value based on the fuzzy PID algorithm.
And finally, the control end 104 is used for controlling each control pump to change pressure to a water supply threshold value based on a fuzzy PID algorithm, so that the water supply is prevented from being influenced by overlarge fluctuation during pressure adjustment, the pressure of the water pump is slowly increased when the water pump is started, the impact on a pipeline is avoided, the stability of output pressure is ensured, and a secondary water supply control system is more perfect and more economical.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (9)
1. A secondary water supply control system based on a fuzzy PID algorithm is characterized in that,
the system comprises a water consumption data acquisition module, a water supply data acquisition module, a calling module and a control end, wherein the water consumption data acquisition module, the water supply data acquisition module, the calling module and the controller are connected in sequence;
the water data acquisition module is used for acquiring water supply flow of a water use end in a water supply range;
the water supply data acquisition module is used for acquiring water source information in a water supply range;
the calling module is used for matching water source information based on water supply flow;
and the control end is used for controlling each control pump to vary the pressure to the water supply threshold value based on the fuzzy PID algorithm.
2. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 1, wherein,
the secondary water supply control system based on the fuzzy PID algorithm further comprises a detection module, wherein the detection module is used for detecting and alarming the stock of the water supply source.
3. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 2, wherein,
the water consumption data acquisition module comprises a flow acquisition unit, an accumulation unit and a water supply target unit, wherein the flow acquisition unit is used for acquiring water consumption end flow data, the accumulation unit is used for accumulating all acquired flow data to obtain real-time water supply flow data, and the water supply target unit is used for obtaining a water supply threshold value based on the real-time water supply flow data.
4. A secondary water supply control system based on a fuzzy PID algorithm as claimed in claim 3,
the specific mode for acquiring the water end flow data is as follows: the output end of the user water gap flowmeter is electrically connected with the input end of the flow acquisition unit, and the user water gap flowmeter accurately calculates the water consumption of the user water outlet.
5. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 4, wherein,
the water supply data acquisition module comprises an information acquisition unit and a water pump quantity control unit, wherein the information acquisition unit is used for acquiring all water source information in a water supply range, and the water source information comprises water supply tank capacity, position and control pump parameters; the water pump quantity control unit is used for controlling the running water pump based on the rated flow of the control pump and the water supply threshold value.
6. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 5, wherein,
the specific mode of the water pump based on the rated flow of the control pump and the water supply threshold value control operation is as follows: when the flow of the water inlet pipe network changes, the number of the water pumps put into operation is reduced or increased, so that the water supply system achieves the target operation effect.
7. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 6, wherein,
the control end comprises a water outlet pressure sensor, a frequency converter, a control unit and a man-machine interaction device, wherein the water outlet pressure sensor is used for detecting the water outlet pressure of a control pump, the frequency converter is used for controlling the control pump, the control unit is used for establishing a binary continuous function relation between the absolute value of deviation of parameters and the absolute value of variation of the deviation by using a fuzzy set theory so as to control the frequency converter, and the man-machine interaction device is used for manually adjusting the parameters of the control pump by an administrator.
8. A secondary water supply control system based on a fuzzy PID algorithm as set forth in claim 7, wherein,
the man-machine interaction device comprises an identity recognition unit, a man-machine interface and an operation recorder, wherein the identity recognition unit is used for recognizing the identity of an administrator by adopting a biological characteristic recognition technology to log in the system, the man-machine interface is used for parameter adjustment of the administrator, and the operation recorder is used for recording the operation of a management officer.
9. A secondary water supply control method based on a fuzzy PID algorithm, applied to the secondary water supply control system based on the fuzzy PID algorithm of claim 1, comprising:
acquiring water supply flow of a water use end in a water supply range;
acquiring water source information in a water supply range;
matching water source information based on the water supply flow;
and controlling each control pump to vary the pressure to a water supply threshold value based on a fuzzy PID algorithm.
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