CN112663721B - Intelligent water supply method of secondary water supply tank - Google Patents

Intelligent water supply method of secondary water supply tank Download PDF

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CN112663721B
CN112663721B CN202011477653.0A CN202011477653A CN112663721B CN 112663721 B CN112663721 B CN 112663721B CN 202011477653 A CN202011477653 A CN 202011477653A CN 112663721 B CN112663721 B CN 112663721B
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程立
高晓昆
刘新贵
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Chongqing Xinsheng Environmental Protection Technology Co ltd
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Abstract

The invention discloses an intelligent water supply method of a secondary water supply tank, which comprises the following steps: dividing a day of a working day or a rest day into a plurality of time periods according to the water consumption condition of a water tank on the working day or the rest day; calculating the average outflow water quantity and the maximum outflow water quantity of the water tank in different time periods of a working day or a rest day; calculating the theoretical water retention amount of the water tank at the starting moment of different time periods of a working day or a rest day; calculating theoretical inflow water quantity of the water tank in different time periods of a working day or a rest day; and fifthly, sending a closing or opening control signal instruction to the water supply control equipment at the starting time of different time periods of a working day or a rest day according to the result of the step four, and completing water supply for one day in a circulating manner. The invention can accurately control the stay time of the tap water in the high-level water tank or the low-level water tank on the premise of meeting the water use requirement, and effectively reduces the risk of over-standard microorganism indexes caused by overlong stay time of the tap water in the water tank.

Description

Intelligent water supply method of secondary water supply tank
Technical Field
The invention relates to the field of secondary water supply of urban water supply network systems, in particular to an intelligent water supply method of a secondary water supply tank.
Background
The secondary water supply is a water supply form that urban public water supply is stored and pressurized and then is supplied to users through pipelines. Domestic drinking water (hereinafter referred to as tap water) in secondary water supply and storage equipment (hereinafter referred to as a water tank) is pumped by a water pump or automatically flows into the urban water supply and storage equipment from a urban water supply and supply network system. The flow of the water tank inlet refers to the flow of tap water at the water tank inlet at a certain moment; the outlet flow of the water tank refers to the flow of tap water at the outlet of the water tank at a certain moment; the water tank inflow amount refers to the volume of tap water flowing into the water tank over a period of time; the water tank outflow volume refers to the volume of tap water flowing out of the water tank within a period of time; the water storage amount of the water tank refers to the total volume of tap water in the water tank at a certain moment; the liquid level of the water tank refers to the vertical distance from the water surface of tap water in the water tank to the bottom surface of the water tank at a certain moment.
The water tank is used in the following three ways. The first method comprises the following steps: the water tank is arranged on the roof or the middle floor of a high-rise building, and tap water in the urban water supply pipe network system is pumped to the water tank on the roof or the middle floor by a water pump in the pump room and then naturally flows to the home of a user; and the second method comprises the following steps: the water tank is arranged in the pump room, tap water in the urban water supply pipe network system firstly flows into the water tank in the pump room, and then is directly pressurized and sent to high-rise user houses through the variable frequency water pump; and the third is that: the water tanks are arranged at two positions, one position is arranged in the pump room, the other position is arranged on the roof or the middle floor of a high-rise building, tap water in the urban water supply pipe network system firstly flows into the water tank in the pump room, then is pumped to the water tank on the roof or the middle floor through the water in the pump room, and then naturally flows to the home of a user. The water tank installed on the roof or middle floor of high-rise building is also called high-level water tank, and the water tank installed in the pump room is also called low-level water tank.
The disinfection of city tap water in China is mostly carried out by adopting a chlorine disinfection method. The chlorine disinfection method has the outstanding advantage that residual chlorine has a continuous disinfection effect, and the residual chlorine refers to the residual chlorine in water after chlorine is added and contacted for a certain time during the disinfection by the chlorine. The residual chlorine concentration gradually decays in the urban water supply pipe network system over time. The most common problem of secondary water supply is that the retention time of tap water in a water tank is too long, so that the concentration of residual chlorine in the tap water in the water tank is reduced to a too low level, and microorganisms in the tap water in the water tank can grow rapidly, so that the microorganism indexes of the tap water in the water tank exceed standards. Therefore, the reduction of the retention time of the tap water in the water tank has important significance for protecting the water quality safety of the tap water in the water tank.
In order to solve the above technical problems, the prior art with chinese patent publication No. CN110258723B discloses a quantitative water supply method for secondary water supply and storage equipment in 2019, 9, 20, the method comprising the steps of: step one, detecting the outlet flow of the water tank in different time periods of one day continuously for multiple days through an outlet flowmeter, and calculating the theoretical outlet flow in different time periods of one day by a control system according to the detected outlet flow after the detection is finished; calculating theoretical residual water quantity of the water tank at different time periods starting time in one day under the condition of given retention time by the control system according to the theoretical outlet flow; step three, detecting the residual water quantity of the water tank in real time through water quantity detection equipment, and calculating the inlet flow quantity of the water tank in different time periods in one day by using a control system according to the theoretical outlet flow quantity, the theoretical residual water quantity and the residual water quantity; and step four, the control system cooperates with the water supply control equipment to finish the water supply in the time period according to the result of the step three at the starting time of different time periods in one day, and the water supply in one day is finished in a circulating mode. The method obtains the water consumption characteristics of the water tank according to big data statistics, and supplies water to the water tank according to the water consumption characteristics, so that water supply according to needs is realized, and the retention time of tap water in the water tank is effectively reduced. However, in practical use, the method still has the following technical problems:
1) the technology does not distinguish working days and rest days when the water use characteristics are statistically analyzed, the water use characteristics of the working days and the rest days are completely different in practice, for some places such as schools, office buildings and the like, the water use amount of the working days is far higher than the water use amount of the rest days, particularly in a 6:00-20:00 time period, the average water use amount of the working days is multiple (3-5 times) of the average water use amount of the rest days, if the statistical analysis is carried out on the working days and the working days without distinguishing the rest days, the obtained average water use amount is obviously larger when used for water supply control of the rest days, the water storage is too much, the water supply control effect is completely lost, the obtained average water use amount is smaller when used for water supply control of the working days, and the water storage is easy to be insufficient.
2) The final calculation result of the technology is the inlet flow, the control of the residence time of tap water in the water tank is realized by controlling the inlet flow, but the accurate control of the inlet flow is difficult to realize in practice, so that the practical application of the technology is limited.
3) The technology does not consider the problem of invalid volume of the water tank, because some accumulated objects are gradually reserved at the bottom of the water tank, in order to prevent the accumulated objects from flowing out to a user along with a water outlet pipe of the water tank, the water outlet pipe is intentionally lifted to a certain height away from the bottom surface of the water tank when the water outlet pipe of the water tank is installed, the vertical distance between the lower edge of the water outlet pipe and the bottom surface of the water tank is usually 10-20cm, therefore, the stored water below the lower edge of the water outlet pipe of the water tank cannot flow out along with the water outlet pipe, the volume of the water tank which cannot be used is called as invalid volume, in addition, for the water tank which uses a water pump to control the water outlet of the water tank, if the water outlet pipe is empty, a water pump is damaged due to dry pumping, in order to prevent the water outlet pipe from being empty, the liquid level cannot be lower than the upper edge of the water outlet pipe, the invalid volume is larger under the condition that the invalid volume of the water tank is not considered when the theoretical reserved water quantity is calculated, the calculated theoretical residual water amount cannot meet the actual water use requirement, and the problem of insufficient water storage can occur when water supply is controlled according to the theoretical residual water amount.
4) Each water tank is designed with an overflow pipe, the height between the lower edge of the overflow pipe and the water tank interface and the bottom surface of the water tank is the highest liquid level of the water tank, when the liquid level of the water tank reaches the highest liquid level, if water is continuously added, tap water flows out from the overflow pipe, and the technology does not consider a treatment method when the liquid level of the water tank reaches the highest liquid level when the water tank supplies water, so that the waste of the tap water can be caused once the situation occurs.
5) The technology adopts average division to the division of the time slot, so that the flexibility of water supply management is lost, the time slot needs to be divided into shorter time slots to ensure sufficient water storage in the water peak period in practice, if the division rule of the time slot is the same as the water peak period is also referred to in the water valley period, the water supply needs to be closed in a short time after the water supply is started, and the service life of the water pump can be shortened by frequently starting and closing the water pump.
6) The technology does not consider a processing method when data are missing in the process of calculating the water consumption characteristics, the situation of data missing occasionally occurs in practice, such as sudden power failure, water tank cleaning, equipment maintenance or equipment failure, and if the data are missing and the water consumption characteristics are calculated by using the data of the day, the calculation result is inaccurate and even seriously distorted.
7) This technique uses the average outlet flow to characterize the water usage and is not very close.
8) The technology is characterized in that outlet flow is obtained through an outlet flowmeter, but the outlet flowmeter is difficult to mount on a water outlet pipe of a water tank under certain conditions, for example, ultrasonic flowmeters all require that a measured water pipe does not have any joint or elbow within a certain length range, and many water outlet pipes cannot meet the condition.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide an intelligent water supply method for a secondary water supply tank, and the invention aims to solve the technical problem that the retention time of tap water in a high-level water tank or a low-level water tank can be more conveniently and accurately controlled on the premise of meeting the water use requirement, so that the risk of exceeding the standard of a microorganism index caused by overlong retention time of the tap water in the water tank is reduced to the maximum extent.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an intelligent water supply method of a secondary water supply tank comprises the following steps:
dividing a day of a working day or a rest day into a plurality of time periods according to the water consumption condition of a water tank on the working day or the rest day;
step two, detecting the outlet flow of the water tank in different time periods of a working day or a rest day in real time continuously for multiple days through monitoring equipment, and calculating the average outflow water quantity and the maximum outflow water quantity of the water tank in different time periods of the working day or the rest day by the control system according to the detected outlet flow;
step three, calculating theoretical residual water quantity of the water tank at the starting moment of different time periods of a working day or a rest day by the control system according to the result of the step two;
step four, detecting the liquid level of the water tank in real time through a liquid level meter, calculating the real-time residual water quantity of the water tank, and calculating the theoretical inflow water quantity of the water tank in different time periods of a working day or a rest day according to the theoretical residual water quantity, the real-time residual water quantity and the maximum water quantity of the water tank at the starting moment of different time periods of the working day or the rest day by a control system;
and step five, sending a closing or opening control signal instruction to the water supply control equipment by the control system at the starting time of different time periods of a working day or a rest day according to the result of the step four, if the water supply is opened, sending the closing control signal instruction to the water supply control equipment by the control system when the conditions are met so as to finish the water supply of the time period, and completing the water supply of one day in a circulating manner.
The method for dividing the time period in the first step comprises the following steps: dividing the working day into N according to the peak and valley conditions of water consumption in the working day1The time periods can be different in duration, and i represents the sequence number of different time periods in a working day; dividing the rest day into N according to the peak and valley condition of water consumption in the rest day2The time periods can be different in duration, and j represents the sequence number of different time periods in the day of the rest day.
The method for calculating the average outflow water quantity and the maximum outflow water quantity in the step two comprises the following steps:
s1: obtaining real-time outlet flow data through monitoring equipment;
s2: eliminating invalid outlet flow data;
s3: calculating the outflow water quantity of each time period on different dates according to the obtained effective outlet flow data;
s4: and calculating the average outflow water quantity and the maximum outflow water quantity of each time period of a plurality of working days or rest days.
The method for obtaining the real-time outlet flow data in the S1 includes two methods, the first method is to directly obtain the real-time outlet flow data through the outlet flow meter, the second method is to obtain the real-time inlet flow data through the inlet flow meter and the real-time liquid level data through the liquid level meter, and then obtain the real-time outlet flow data through calculation, and the interval time and the total number of data of the obtained inlet flow data and the liquid level data at this time are the interval time and the total number of data of the outlet flow data, and the calculation formula of the second method is as follows:
Figure BDA0002836121120000041
Figure BDA0002836121120000042
in the formula (1), a represents the sequence number of the selected working day, i represents the sequence number of the time period in the day of the working day, and b represents the sequence number of the corresponding data in the time period of i;
Figure BDA0002836121120000051
indicating an outlet flow rate in the order of data b for a time period in the order of data a on a weekday,
Figure BDA0002836121120000052
denotes the inlet flow rate in the order of data b in the order of time period i in the order of day a, Ha/i/bIndicating the liquid level in the data sequence b in the time period sequence a on the working day, Ha/i/(b-1)Represents Ha/i/bS represents the longitudinal sectional area of the water tank, and t represents the interval time between two adjacent data;
in the formula (2), c represents the sequence number of the selected rest days, j represents the sequence number of the time periods in one day of the rest days, and d represents the sequence number of the corresponding data in the time period j;
Figure BDA0002836121120000053
indicating an outlet flow rate in the order of data d for a time period in the order of c on the day of rest,
Figure BDA0002836121120000054
representing an inlet flow rate with a time period sequence of c, a time period sequence of j, a data sequence of d, Hc/j/dIndicating a level in the order of d for a period of time c on the day of rest, Hc/j/(d-1)Represents Hc/j/dS represents the longitudinal sectional area of the water tank, and t represents the interval time of the two data.
In S2, the interval time between two adjacent outlet flow rate data is equal under normal conditions, and the total number of outlet flow rate data in each time period can be determined in advance, so that the outlet flow rate data in different time periods can be judged by judgingWhether the total number of the data reaches the predetermined total number of the outlet flow data can determine whether the outlet flow data in the time period is missing or not; if the outlet flow data are continuous and complete in one day, the outlet flow data are regarded as valid data, otherwise, if the outlet flow data are missing in one day, all the outlet flow data in the day are regarded as invalid and removed, and the outlet flow data regarded as invalid cannot be used for later-stage calculation; the interval time of two adjacent outlet flow data is represented by t, and niThe total number of outlet flow data in the time period of working day i is expressed by njRepresenting the total number of outlet flow data during the time period j of the holiday.
In S3, the method of calculating the outflow water volume at each time period on different dates includes:
Figure BDA0002836121120000055
Figure BDA0002836121120000056
in the formula (3)
Figure BDA0002836121120000057
N represents the amount of outflow water in the order of time period a on the day and date, niIndicating the total number of outlet flow data during the time period i of the working day,
Figure BDA0002836121120000058
and t have the same meanings as above;
in the formula (4)
Figure BDA0002836121120000061
N represents the amount of effluent in the order of j in the order of c on the day of rest, njRepresents the total number of outlet flow data in the time period j of the rest day,
Figure BDA0002836121120000062
and t have the same meanings as above.
In S4, the method for calculating the average outflow volume and the maximum outflow volume in each time period on a plurality of working days or holidays comprises:
Figure BDA0002836121120000063
Figure BDA0002836121120000064
Figure BDA0002836121120000065
Figure BDA0002836121120000066
n in the formulas (5) and (6) represents the number of days of a working day or a resting day for statistical calculation,
Figure BDA0002836121120000067
shows the average outflow water quantity of the latest n working days in the i time period,
Figure BDA0002836121120000068
representing the average outflow water quantity of the latest n rest days in the j time period;
in the formulae (7) and (8)
Figure BDA0002836121120000069
Shows the maximum value of the effluent amount in the time period i in the last n working days,
Figure BDA00028361211200000610
and max is the operator for solving the maximum value, wherein the maximum value is the maximum value of the outflow water quantity in the j time period on the latest n rest days.
The method for calculating the theoretical water retention amount of the water tank at the starting time of different time periods in one day in the third step comprises the following steps:
Wi＝max{Wi/p，Wi/q} (9)
Figure BDA00028361211200000611
Figure BDA00028361211200000612
Wj＝max{Wj/p，Wj/q} (12)
Figure BDA00028361211200000613
Figure BDA00028361211200000614
w in formula (9)iRepresenting the theoretical amount of water retained at the beginning of the period i of the working day, Wi/pAnd Wi/qIs an intermediate variable set for convenient calculation, and max { } is an operator for solving the maximum value;
n in the formulae (10) and (11)1Represents the total number of time periods in a day on a weekday, mod being the remainder operator, (imodN)1+1) represents the period next to the i period in such a way as to satisfy the condition that the period expression (i +1) cannot exceed the total number of periods N1Requirement of (a), k1And k2Are two parameters, k, set manually1In the range of 0.4-1.0, k2In the range of 0.05-0.6, H0The minimum liquid level allowed by the water stored in the water tank, and S represents the longitudinal section area of the water tank;
w in formula (12)jRepresenting the theoretical amount of water remaining at the beginning of time period j on the day of rest, Wj/pAnd Wj/qIs an intermediate variable set for convenient calculation;
n in the formulae (13) and (14)2Representing the total number of time periods during the day of rest,mod is the remainder operator, (jmodN2+1) represents the next period of the j period in such a way as to satisfy the condition that the period expression (j +1) cannot exceed the total number of periods N2Requirement of (a), k3And k4Are two parameters, k, set manually3In the range of 0.4-1.0, k4In the range of 0.05-0.6.
The method for calculating the real-time water retention amount of the water tank in the fourth step comprises the following steps:
Figure BDA0002836121120000071
Figure BDA0002836121120000072
in the formula (15)
Figure BDA0002836121120000073
Indicating the liquid level at the beginning of time period i of a working day with date x, S the longitudinal cross-sectional area of the tank,
Figure BDA0002836121120000074
representing the real-time water reserve at the beginning of the time period i of the working day with the date x;
in formula (16)
Figure BDA0002836121120000075
Indicating the liquid level at the beginning of the j period of the day of rest with date y,
Figure BDA0002836121120000076
representing the real-time amount of water remaining at the beginning of time period j of the day of rest with date y.
In the fourth step, the method for calculating the theoretical inflow water quantity of the water tank in different time periods in one day at the starting time of each time period in a working day or a rest day comprises the following steps:
Wm＝Hm·S (17)
Figure BDA0002836121120000077
Figure BDA0002836121120000078
w in formula (17)mIndicating the maximum water volume of the tank, HmRepresents the maximum allowable liquid level of the water tank;
in the formula (18)
Figure BDA0002836121120000081
A theoretical inflow water amount indicating a time period i of a working day of date x;
in the formula (19)
Figure BDA0002836121120000082
A theoretical influent water volume representing a time period j on a day of rest with a date y; s, Wi、
Figure BDA0002836121120000083
WjAnd
Figure BDA0002836121120000084
the same meanings as above.
The method for determining whether the water supply tank supplies water in one time period in the step five comprises the following steps: at the beginning of different time periods of the day, the control system is based on
Figure BDA0002836121120000085
Or
Figure BDA0002836121120000086
Whether or not to supply water to the tank is determined by whether or not it is equal to zero when
Figure BDA0002836121120000087
Or
Figure BDA0002836121120000088
When the water supply amount is equal to 0, the control system sends a control signal instruction for closing the water supply to the water tank to the water supply control equipment, and when the water supply amount is equal to 0
Figure BDA0002836121120000089
Or
Figure BDA00028361211200000810
And when the water supply quantity is not equal to 0, the control system sends a control signal instruction for starting water supply to the water tank to the water supply control equipment.
The method for determining when the water supply control device is turned off within a time period in the step five comprises the following steps: after the water supply control equipment is started, an inlet flow of the water tank is detected by an inlet flowmeter in real time, the accumulated inflow water quantity of the time period is calculated once every time one piece of inlet flow data is obtained through detection, the calculated accumulated inflow water quantity is compared with the theoretical inflow water quantity of the time period, when the calculated accumulated inflow water quantity is larger than or equal to the theoretical inflow water quantity, a control system sends a control signal instruction for closing water supply to the water tank to stop water supply to the water supply control equipment, and the method for calculating the accumulated inflow water quantity and sending the control signal instruction comprises the following steps:
Figure BDA00028361211200000811
Figure BDA00028361211200000812
Figure BDA00028361211200000813
Figure BDA00028361211200000814
in the formula (20)
Figure BDA00028361211200000815
Is shown on the dayThe accumulated inflow water quantity with the time period sequence number b of the working days with the period x,
Figure BDA00028361211200000816
the method comprises the steps of representing the inlet flow with the time period sequence number of b in the period i of a working day with the date of x obtained through real-time detection, and representing the interval time of two adjacent inlet flow data;
in the formula (21)
Figure BDA00028361211200000817
Represents the cumulative inflow water amount of the sequence number d in the j time period of the rest day with the date y,
Figure BDA00028361211200000818
and the inlet flow with the sequential number d of j time periods on the rest day with the date y detected in real time is shown.
The invention has the advantages that:
1. the invention is suitable for supplying water to a high-level water tank and a low-level water tank according to the demand in a quantitative mode, obtains the water consumption characteristics (average outflow water quantity and maximum outflow water quantity) of the water tank in different time periods of a working day or a rest day through big data statistical analysis, calculates the theoretical residual water quantity at the starting time of different time periods of the working day or the rest day according to the water consumption characteristics and the lowest liquid level of the water tank, calculates the theoretical inflow water quantity of the time period by combining the actual residual water quantity of the water tank and the starting time of the highest liquid level in different time periods of the working day or the rest day, and supplies water to the water tank according to the calculated theoretical inflow water quantity, thereby realizing the water storage according to the demand in a quantitative mode, effectively reducing the retention time of tap water in the water tank and furthest reducing the risk of over-exceeding of microorganism indexes caused by the excessive retention time of the tap water in the water tank.
2. According to the invention, aiming at the actual situation that the characteristics of water for working days and rest days are completely different, the working days and the rest days are separated for statistical analysis, the characteristics of water obtained by statistical analysis of the working days are used for water supply control of the working days, and the characteristics of water obtained by statistical analysis of the rest days are used for water supply control of the rest days, so that the problem of excessive water storage in the rest days and the problem of insufficient water storage in the working days are avoided, and more accurate and effective water supply control is realized.
3. The final calculation result of the invention is the theoretical inflow amount, the control of the retention time of the tap water in the water tank is realized according to the theoretical inflow amount, the control of the inflow amount is easy to realize in practice, and the invention realizes the control of the inflow amount very conveniently by comparing the accumulated inflow amount with the theoretical inflow amount, thereby greatly facilitating the application of the technology in practice.
4. The invention considers the actual condition of invalid volume of the water tank when calculating the theoretical residual water quantity, calculates the invalid volume of the water tank according to the lowest liquid level allowed by the water stored in the water tank in practice, and takes the sum of the normal theoretical residual water quantity calculation result and the invalid volume of the water tank as the final theoretical residual water quantity of the water tank, thereby ensuring that the situation of insufficient water storage cannot occur in the water supply control performed by the method and preventing the occurrence of empty pipe of the water outlet pipe.
5. The maximum water storage capacity of the water tank is calculated according to the maximum liquid level, and the total of the real-time residual water volume of the water tank and the theoretical inflow water volume is particularly limited not to exceed the maximum water storage capacity of the water tank, so that the tap water waste caused by the fact that the supplied water exceeds the maximum water storage capacity of the water tank is avoided.
6. The invention adopts a flexible division method for dividing the time period, does not require uniform division, and emphasizes the division according to the actual water use characteristics of the water use in the peak period and the valley period, thereby ensuring the sufficient water use in the peak period of the water use, avoiding the frequent start and stop of the water pump in the valley period of the water use, and prolonging the service life of the water pump.
7. When the water consumption characteristics are counted and calculated, the data with the data missing date are not included in the water consumption characteristics, so that the result of counting and calculating can be more accurate.
8. The invention uses the average outflow water quantity and the maximum outflow water quantity to embody the water use characteristics, which is more accurate and more appropriate than the method of simply using the average outlet flow to embody the water use characteristics.
9. The invention provides two acquisition methods for the outlet flow, wherein the method for calculating the outlet flow through the inlet flow and the liquid level data has important significance for the condition that the outlet flow of the water tank is inconvenient to monitor.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a functional diagram of the present invention.
Detailed Description
The invention provides an intelligent water supply method for a secondary water supply tank, and equipment or a device used in the intelligent water supply method comprises a water tank, an inlet flowmeter, a liquid level meter, water supply control equipment, an intelligent controller and a remote controller. The intelligent control ware includes the data acquisition module, the data storage module, the data processing module, communication module, control module and power module, the data acquisition module respectively with the import flowmeter, the level gauge, data processing module and power module are connected, the data storage module is connected with data processing module and power module respectively, the data processing module respectively with the data acquisition module, the data storage module, communication module, control module and power module are connected, communication module respectively with remote control ware, data processing module and power module are connected, control module respectively with the data processing module, power module and water supply controlgear are connected, power module is connected with external power supply and all other modules, for the power supply of other each module. The inlet flow meter, the liquid level meter and the water supply control equipment are conventional products sold in the market at present, the intelligent controller is a self-made control circuit board, and the remote controller is an IPC-610L industrial personal computer produced by the Tuhua technology.
The intelligent water supply system is suitable for intelligent water supply of a high-level water tank or a low-level water tank, and when the water tank is the low-level water tank, the water supply control equipment is a water inlet electromagnetic valve; when the water tank is a high-level water tank, the water supply control equipment is a water pump. The inlet flowmeter is arranged on a water inlet pipe of the water tank, collects flow data every minute, has the unit of L/min, and transmits the data to the intelligent controller in real time. The liquid level meter is installed inside the water tank, collects water tank liquid level data every minute, and the unit is dm to with data real-time transmission to intelligent control ware. The water supply control equipment is arranged on the water inlet pipe of the water tank, can receive a control signal command of opening or closing sent by the intelligent controller and can switch on or off the water supply control equipment according to the control signal command; the intelligent controller is arranged beside the water tank and has the functions of collecting data, storing data, processing data, receiving data and instructions and sending data and instructions; the remote controller is installed in the secondary water supply management center and used for sending software upgrading version data and upgrading instructions to the intelligent controller, sending various parameter data needing manual setting and parameter changing instructions thereof to the intelligent controller, sending control signal instructions for forcibly turning on or turning off the water supply control equipment to the intelligent controller, and receiving all data and alarm signals stored by the intelligent controller.
Specifically, the data acquisition function of the intelligent controller is realized through a data acquisition module in the intelligent controller, and the data acquisition module is connected with an inlet flow meter and a liquid level meter and acquires inlet flow data and liquid level data of the water tank in real time.
The data storage function of the intelligent controller is realized through a data storage module in the intelligent controller, the data storage module can store inlet flow data and liquid level data which are collected by a data collection module in real time, can store a calculation result of a data processing module, can store software upgrading version data and upgrading instructions received by a communication module, can store various parameter data which are required to be manually set and parameter changing instructions thereof received by the communication module, and can store control signal instructions sent by the control module.
The intelligent controller is characterized in that the data and instruction receiving function is realized through a communication module in the intelligent controller, and the communication module receives software upgrading version data and upgrading instructions sent by a remote controller, various parameter data needing manual setting and parameter changing instructions thereof, and control signal instructions for turning on or turning off water supply control equipment in a wireless transmission mode.
The function of sending the control signal instruction of the intelligent controller is realized by a control module in the intelligent controller, and the control module can send an 'opening' or 'closing' control signal instruction to the water supply control equipment after receiving the control signal instruction of the data processing module.
The data processing function of the intelligent controller is realized through a data processing module in the intelligent controller, the data processing module is connected with other modules to play a role of a management center, and meanwhile, various calculations can be carried out and corresponding commands can be sent according to calculation results.
Example 1
The embodiment provides an intelligent water supply method capable of supplying water to a secondary water supply tank as required, which is described by taking a water tank as a low-level water tank and a water supply control device as a water inlet electromagnetic valve as an example, and the structure of the intelligent water supply method is shown in fig. 1 and 2, and the intelligent water supply method specifically comprises the following steps:
step one, dividing a day of a working day or a rest day into a plurality of time periods according to the water consumption condition of a water tank on the working day or the rest day.
The method for dividing the time period in the step comprises the following steps: dividing the working day into N according to the peak and valley conditions of water consumption in the working day1The time periods of different time periods can be the same or different, and i represents the sequence number of different time periods in a working day; dividing the rest day into N according to the peak and valley condition of water consumption in the rest day2The time periods of different time periods can be the same or different, and j represents the sequence number of different time periods in the day of the rest day.
And step two, detecting the outlet flow of the water tank in different time periods of a working day or a rest day in real time continuously for multiple days through the monitoring equipment, and calculating the average outflow water quantity and the maximum outflow water quantity of the water tank in different time periods of the working day or the rest day by the control system according to the detected outlet flow.
The method for calculating the average outflow water quantity and the maximum outflow water quantity in the step comprises the following steps:
s1: obtaining real-time outlet flow data through monitoring equipment;
s2: eliminating invalid outlet flow data;
s3: calculating the outflow water quantity of each time period on different dates according to the obtained effective outlet flow data;
s4: and calculating the average outflow water quantity and the maximum outflow water quantity of each time period of a plurality of working days or rest days.
There are two methods for obtaining the real-time outlet flow data in step S1, the first method is to directly obtain the real-time outlet flow data through the outlet flow meter, and at this time, the obtained working days and dates can be set as the outlet flow with the sequence of a, the sequence of i, the sequence of b, and the sequence of a
Figure BDA0002836121120000121
And setting the obtained date sequence of the rest days as c, the time period sequence as j, the data sequence as d and the outlet flow as
Figure BDA0002836121120000122
The second method is that real-time inlet flow data are obtained through an inlet flowmeter, real-time liquid level data are obtained through a liquid level meter, then real-time outlet flow data are obtained through calculation, the interval time and the total data number of the obtained inlet flow data and the obtained liquid level data are the interval time and the total data number of the outlet flow data, and the calculation formula of the second method is as follows:
Figure BDA0002836121120000123
Figure BDA0002836121120000124
in the formula (1), a represents the sequence number of the selected working day, i represents the sequence number of the time period in the day of the working day, and b represents the sequence number of the corresponding data in the time period of i;
Figure BDA0002836121120000125
indicating an outlet flow rate in the order of data b for a time period in the order of data a on a weekday,
Figure BDA0002836121120000126
denotes the inlet flow rate in the order of data b in the order of time period i in the order of day a, Ha/i/bIndicating the liquid level in the data sequence b in the time period sequence a on the working day, Ha/i/(b-1)Represents Ha/i/bS represents the longitudinal sectional area of the water tank, and t represents the interval time between two adjacent data.
In the formula (2), c represents the sequence number of the selected rest days, j represents the sequence number of the time periods in one day of the rest days, and d represents the sequence number of the corresponding data in the time period j;
Figure BDA0002836121120000131
indicating an outlet flow rate in the order of data d for a time period in the order of c on the day of rest,
Figure BDA0002836121120000132
representing an inlet flow rate with a time period sequence of c, a time period sequence of j, a data sequence of d, Hc/j/dIndicating a level in the order of d for a period of time c on the day of rest, Hc/j/(d-1)Represents Hc/j/dS represents the longitudinal sectional area of the water tank, and t represents the interval time of the two data.
In step S2, in a normal situation, the interval time between two adjacent outlet traffic data is equal, and the total number of outlet traffic data in each time period can be determined in advance, so that it can be determined whether the outlet traffic data in the time period is missing by determining whether the total number of outlet traffic data in different time periods reaches the predetermined total number of outlet traffic data; if the egress traffic data is continuously complete throughout the day, it is considered valid data, whereas if the egress traffic data is in oneIf the day is lost, all the outlet flow data of the day are considered invalid and removed, and the outlet flow data considered invalid cannot be used for later-stage calculation; the interval time of two adjacent outlet flow data is represented by t, and niThe total number of outlet flow data in the time period of working day i is expressed by njRepresenting the total number of outlet flow data during the time period j of the holiday.
In step S3, the method of calculating the outflow water amount for each time period on different dates is:
Figure BDA0002836121120000133
Figure BDA0002836121120000134
in the formula (3)
Figure BDA0002836121120000135
N represents the amount of outflow water in the order of time period a on the day and date, niIndicating the total number of outlet flow data during the time period i of the working day,
Figure BDA0002836121120000136
and t have the same meanings as above.
In the formula (4)
Figure BDA0002836121120000137
N represents the amount of effluent in the order of j in the order of c on the day of rest, njRepresents the total number of outlet flow data in the time period j of the rest day,
Figure BDA0002836121120000138
and t have the same meanings as above.
In step S4, the method for calculating the average outflow volume and the maximum outflow volume for each time period on a plurality of working days or holidays includes:
Figure BDA0002836121120000141
Figure BDA0002836121120000142
Figure BDA0002836121120000143
Figure BDA0002836121120000144
n in the formulas (5) and (6) represents the number of days of a working day or a resting day for statistical calculation,
Figure BDA0002836121120000145
shows the average outflow water quantity of the latest n working days in the i time period,
Figure BDA0002836121120000146
mean outflow for the j time period of the last n days of rest is counted.
In the formulae (7) and (8)
Figure BDA0002836121120000147
Shows the maximum value of the effluent amount in the time period i in the last n working days,
Figure BDA0002836121120000148
and max is the operator for solving the maximum value, wherein the maximum value is the maximum value of the outflow water quantity in the j time period on the latest n rest days.
And step three, calculating the theoretical water retention amount of the water tank at the starting moment of different time periods of a working day or a rest day by the control system according to the result of the step two.
The method for calculating the theoretical water retention amount of the water tank at the starting time of different time periods in one day in the step comprises the following steps:
Wi＝max{Wi/p，Wi/q} (9)
Figure BDA0002836121120000149
Figure BDA00028361211200001410
Wj＝max{Wj/p，Wj/q} (12)
Figure BDA00028361211200001411
Figure BDA00028361211200001412
w in formula (9)iRepresenting the theoretical amount of water retained at the beginning of the period i of the working day, Wi/pAnd Wi/qIs an intermediate variable set for convenient calculation, and max { } is an operator for solving the maximum value.
N in the formulae (10) and (11)1Represents the total number of time periods in a day on a weekday, mod being the remainder operator, (imodN)1+1) represents the period next to the i period in such a way as to satisfy the condition that the period expression (i +1) cannot exceed the total number of periods N1Requirement of (a), k1And k2Are two parameters, k, set manually1In the range of 0.4-1.0, k2In the range of 0.05-0.6, H0Is the lowest level allowed by the water stored in the water tank.
W in formula (12)jRepresenting the theoretical amount of water remaining at the beginning of time period j on the day of rest, Wj/pAnd Wj/qAre intermediate variables set for ease of calculation.
N in the formulae (13) and (14)2Representing the total number of time periods in a day of rest, mod being the remainder operator, (jmodN2+1) represents the next slot of the j slot in such a way thatThe total number of time periods N cannot be exceeded in order to satisfy the time period expression (j +1)2Requirement of (a), k3And k4Are two parameters, k, set manually3In the range of 0.4-1.0, k4In the range of 0.05-0.6.
And step four, detecting the liquid level of the water tank in real time through a liquid level meter, calculating the real-time water storage amount of the water tank, and calculating the theoretical inflow water amount of the water tank in different time periods of a working day or a rest day according to the theoretical water storage amount, the real-time water storage amount and the maximum water amount of the water tank at the starting moment of different time periods of the working day or the rest day by a control system.
The method for calculating the real-time water storage amount of the water tank in the step comprises the following steps:
Figure BDA0002836121120000151
Figure BDA0002836121120000152
in the formula (15)
Figure BDA0002836121120000153
Indicating the liquid level at the beginning of time period i of a working day with date x, S the longitudinal cross-sectional area of the tank,
Figure BDA0002836121120000154
representing the real-time amount of water remaining at the beginning of time period i of the working day on date x.
In formula (16)
Figure BDA0002836121120000155
Indicating the liquid level at the beginning of the j period of the day of rest with date y,
Figure BDA0002836121120000156
representing the real-time amount of water remaining at the beginning of time period j of the day of rest with date y.
In the step, the method for calculating the theoretical inflow water quantity of the water tank in different time periods in one day at the starting time of each time period in a working day or a rest day comprises the following steps:
Wm＝Hm·S (17)
Figure BDA0002836121120000157
Figure BDA0002836121120000161
w in formula (17)mIndicating the maximum water volume of the tank, HmIndicating the maximum level of liquid allowed in the tank.
In the formula (18)
Figure BDA0002836121120000162
Representing the theoretical inflow water amount at time period i of the day at date x.
In the formula (19)
Figure BDA0002836121120000163
A theoretical influent water volume representing a time period j on a day of rest with a date y; s, Wi、
Figure BDA0002836121120000164
WjAnd
Figure BDA0002836121120000165
the same meanings as above.
And step five, sending a closing or opening control signal instruction to the water supply control equipment by the control system at the starting time of different time periods of a working day or a rest day according to the result of the step four, if the water supply is opened, sending the closing control signal instruction to the water supply control equipment by the control system when the conditions are met so as to finish the water supply of the time period, and completing the water supply of one day in a circulating manner.
The method for determining whether the water supply tank supplies water in a time period in the step comprises the following steps: at different times of the dayThe starting time of the time period is controlled according to
Figure BDA0002836121120000166
Or
Figure BDA0002836121120000167
Whether or not to supply water to the tank is determined by whether or not it is equal to zero when
Figure BDA0002836121120000168
Or
Figure BDA0002836121120000169
When the water supply amount is equal to 0, the control system sends a control signal instruction for closing the water supply to the water tank to the water supply control equipment, and when the water supply amount is equal to 0
Figure BDA00028361211200001610
Or
Figure BDA00028361211200001611
And when the water supply quantity is not equal to 0, the control system sends a control signal instruction for starting water supply to the water tank to the water supply control equipment.
The method for determining when the water supply control device is turned on and turned off within a time period in this step is as follows: after the water supply control equipment is started, an inlet flow of the water tank is detected by an inlet flowmeter in real time, the accumulated inflow water quantity of the time period is calculated once every time one piece of inlet flow data is obtained through detection, the calculated accumulated inflow water quantity is compared with the theoretical inflow water quantity of the time period, when the calculated accumulated inflow water quantity is larger than or equal to the theoretical inflow water quantity, a control system sends a control signal instruction for closing water supply to the water tank to stop water supply to the water supply control equipment, and the method for calculating the accumulated inflow water quantity and sending the control signal instruction comprises the following steps:
Figure BDA00028361211200001612
Figure BDA00028361211200001613
Figure BDA00028361211200001614
Figure BDA0002836121120000171
in the formula (20)
Figure BDA0002836121120000172
The cumulative inflow water amount of the time period i of the working day with the date x and the sequence number b,
Figure BDA0002836121120000173
the inlet flow with the time period sequence number b of the i time period on the working day with the date x detected in real time is shown, and t represents the interval time of two adjacent inlet flow data.
In the formula (21)
Figure BDA0002836121120000174
Represents the cumulative inflow water amount of the sequence number d in the j time period of the rest day with the date y,
Figure BDA0002836121120000175
and the inlet flow with the sequential number d of j time periods on the rest day with the date y detected in real time is shown.
Example 2
To further demonstrate the accuracy, effectiveness and utility of the method described in example 1, applicants now further describe the protocol of example 1 with specific practical data, as follows:
the water tank used is set as a low-level water tank positioned in a pump room of a garden, and the volume of the water tank is 55 multiplied by 30 multiplied by 20 to 33000dm3The longitudinal section area of the water tank is 1650dm2The lowest allowable liquid level of the tank water storage is 2.5dm, and the highest allowable liquid level of the tank water storage is 18 dm.
Specifically, the method for dividing the time period in the first step includes: dividing a working day into 5 time periods of 0:00-7:59, 8:00-11:59, 12:00-15:59, 16:00-19:59 and 20:00-23:59, and using i to represent the sequence number of different time periods in the working day; dividing the rest day into the following 3 time periods, 0:00-9:59, 10:00-16:59 and 17:00-23:59, and using j to represent the sequence number of different time periods in the rest day.
The method for obtaining the real-time outlet flow data in the second step S1 includes: installing a flowmeter on a water inlet pipe of a water tank, installing a liquid level meter in the water tank, calculating to obtain real-time outlet flow data through inlet flow data and water tank liquid level data obtained by real-time monitoring, wherein the interval time between two adjacent inlet flow data and two adjacent water tank liquid level data is 1min, the interval time for calculating to obtain two adjacent outlet flow data is also 1min, the total number of the outlet flow data in different time periods of a working day is respectively 480, 240 and 240, and the total number of the outlet flow data in different time periods of a rest day is respectively 600, 420 and 420; the method for calculating the outlet flow data according to the inlet flow data and the water tank liquid level data comprises the following steps:
Figure BDA0002836121120000176
Figure BDA0002836121120000181
in the formula (1), a represents the sequence number of the selected working day, i represents the sequence number of the time period in the day of the working day, and b represents the sequence number of the corresponding data in the time period of i;
Figure BDA0002836121120000182
the outlet flow rate with the data sequence of b is expressed in the unit of L/min in the time period sequence of a on working day,
Figure BDA0002836121120000183
when the date sequence of the working days is aThe interval sequence is I, the data sequence is b, and the unit is L/min and Ha/i/bIndicating the liquid level with the data sequence of b in the time period sequence of a on the working day and the data sequence of i in the unit of dm and Ha/i/(b-1)Represents Ha/i/bThe previous level data in dm, the longitudinal cross-sectional area of the tank is 1650dm2The interval time between two adjacent data is 1 min; in the formula (2), c represents the sequence number of the selected rest days, j represents the sequence number of the time periods in one day of the rest days, and d represents the sequence number of the corresponding data in the time period j;
Figure BDA0002836121120000184
the outlet flow rate with the time period sequence of c, the data sequence of j and the unit of d is expressed as L/min,
Figure BDA0002836121120000185
the unit is L/min and H, which represents the inlet flow with the sequence of j data sequence and d in the sequence of c time periods on the day of restc/j/dIndicating the liquid level with the time period sequence c, the data sequence j and the data sequence d on the day of rest in the unit dm and Hc/j/(d-1)Represents Hc/j/dIn dm.
The method for eliminating the invalid outlet flow data in the second step S2 includes: under normal conditions, the interval time of two adjacent outlet flow data is equal, and the total number of the outlet flow data in each time period can be determined in advance, so that whether the outlet flow data in the time period is missing or not can be determined by judging whether the total number of the outlet flow data in different time periods reaches the predetermined total number of the outlet flow data. If the outlet flow data are continuously complete in one day, the outlet flow data are regarded as valid data, otherwise, if the outlet flow data are missing in one day, all the outlet flow data in the day are regarded as invalid and removed, and the outlet flow data regarded as invalid and removed cannot be used for later calculation.
In this embodiment, outlet flow data from 9/19/11/14/2020 is counted, wherein the outlet flow data from 9/23/9 is not subjected to statistical calculation due to incomplete data, a working day for which statistical calculation is performed is 36 days, and a rest day is 21 days.
The method for calculating the outflow water amount in each time period in the second step S3 includes:
Figure BDA0002836121120000186
Figure BDA0002836121120000191
in the formula (3)
Figure BDA0002836121120000192
The unit of the effluent is L, niThe total number of the outlet flow data in the working day i time period is shown, the interval time of two adjacent outlet flow data is 1min,
Figure BDA0002836121120000193
the same as defined above; in the formula (4)
Figure BDA0002836121120000194
The unit of the effluent water quantity is L, njThe total number of the outlet flow data in the time period j of the rest day is shown, the interval time of two adjacent outlet flow data is 1min,
Figure BDA0002836121120000195
the same meanings as above.
In this step, the data of the daily outflow water obtained by statistical calculation are shown in table 1 below, and the data of the daily outflow water obtained by statistical calculation are shown in table 2 below, as follows:
TABLE 1
Figure BDA0002836121120000196
Figure BDA0002836121120000201
TABLE 2
Figure BDA0002836121120000202
The method for calculating the average outflow water volume and the maximum outflow water volume in each time period in the second step S4 includes:
Figure BDA0002836121120000203
Figure BDA0002836121120000211
Figure BDA0002836121120000212
Figure BDA0002836121120000213
the working day for the statistical calculation in the formulas (5) and (6) was 36 days, the rest day for the statistical calculation was 21 days,
Figure BDA0002836121120000214
which represents the average effluent volume in time period i, in units of L,
Figure BDA0002836121120000215
the average outflow in L is shown for the last 21 days of rest in the statistical sense during the j period.
In the formulae (7) and (8)
Figure BDA0002836121120000216
Presentation systemThe maximum value of the water outflow in the time period i of the last 36 working days is counted, and the unit is L,
Figure BDA0002836121120000217
the maximum value of the outflow water quantity in the j time period on the latest 21 rest days is counted, the unit is L, and max { } is an operator for solving the maximum value.
In this step, the results of the average outflow and the maximum outflow in different time periods on the working day obtained by statistical calculation are shown in table 3 below, and the results of the average outflow and the maximum outflow in different time periods on the resting day obtained by statistical calculation are shown in table 4 below, as follows:
TABLE 3
Time period 00-08 08-12 12-16 16-20 20-24
Average outflow volume 10560 7026 9943 6090 5936
Maximum water outflow 16535 10128 13044 12573 11310
TABLE 4
Time period 00-10 10-17 17-24
Average outflow volume 8922 8562 10311
Maximum water outflow 12124 15620 16988
The method for calculating the theoretical water retention amount of the water tank at the starting moment of different time periods in a working day or a resting day in the third step comprises the following steps:
Wi＝max{Wi/p，Wi/q} (9)
Figure BDA0002836121120000218
Figure BDA0002836121120000219
Wj＝max{Wj/p，Wj/q} (12)
Figure BDA0002836121120000221
Figure BDA0002836121120000222
w in formula (9)iThe theoretical amount of retained water at the beginning of the i time period of the working day is expressed in units of L and Wi/pAnd Wi/qIs an intermediate variable set for convenient calculation, and max { } is an operator for solving the maximum value.
The total number of time periods in one day of working days in the formula (10) and the formula (11) is 5, mod is a remainder operator, and (imod 5+1) represents the next time period of the i time period in such a way that the requirement that the time period expression (i +1) cannot exceed the total number of the time periods by 5 is met, 0.7 and 0.15 are two parameters which are set artificially, the lowest allowable liquid level of water storage of the water tank is 2.5dm, and the longitudinal section area of the water tank is 1650dm2。
W in formula (12)jThe theoretical amount of retained water at the beginning of the j time period of the rest day is expressed in the unit of L and Wj/pAnd Wj/qAre intermediate variables set for ease of calculation.
The total number of time periods in the weekday of formula (13) and formula (14) is 3, and (jmod 3+1) represents the next time period of the j time period, in such a way that the requirement that the time period expression (j +1) cannot exceed the total number of time periods of 3 is satisfied, and 0.7 and 0.15 are two parameters set manually.
In this step, the calculation results of the theoretical retained water amount of the water tank at the starting time of different time periods on the working day are shown in table 5 below, and the calculation results of the theoretical retained water amount of the water tank at the starting time of different time periods on the rest day are shown in table 6 below, as follows:
TABLE 5
Time period 00-08 08-12 12-16 16-20 20-24
Wi/q 19603 18111 18331 14370 17453
Wi/q 21714 15744 18083 17588 17019
Theoretical amount of retained water 21714 18111 18331 17588 17453
TABLE 6
Time period 00-10 10-17 17-24
Wj/p 19040 19905 20681
Wj/q 17533 21292 22451
Theoretical amount of retained water 19040 21292 22451
The method for calculating the real-time water retention capacity of the water tank in the fourth step comprises the following steps:
Figure BDA0002836121120000231
Figure BDA0002836121120000232
in the formula (15)
Figure BDA0002836121120000233
Indicating the liquid level at the beginning of time period i of a working day with date x, the tank has a longitudinal cross-sectional area of 1650dm2，
Figure BDA0002836121120000234
Representing the real-time amount of water remaining at the beginning of time period i of the working day on date x.
In formula (16)
Figure BDA0002836121120000235
Indicating the liquid level at the beginning of the j period of the day of rest with date y,
Figure BDA0002836121120000236
representing the real-time amount of water remaining at the beginning of time period j of the day of rest with date y.
In the fourth step, the method for calculating the theoretical inflow water quantity of the water tank in different time periods in one day at the starting time of each time period in a working day or a rest day comprises the following steps:
Wm＝Hm·S＝18×1650＝29700dm3 (17)
Figure BDA0002836121120000237
Figure BDA0002836121120000238
w in formula (17)mIndicating the maximum volume of the tank, the maximum level of the tank's permitted HmIs 18 dm.
In the formula (18)
Figure BDA0002836121120000239
Representing the theoretical inflow water amount at time period i of the day at date x.
In the formula (19)
Figure BDA00028361211200002310
A theoretical influent water volume representing a time period j on a day of rest with a date y; s, Wi、
Figure BDA00028361211200002311
WjAnd
Figure BDA00028361211200002312
the same meanings as above.
In this embodiment, day 11 and 15 are holidays, and the theoretical inflow water amount of each time period calculated at the starting time of each time period on the day is shown in table 7 below; day 11, 16 is a work day, and the theoretical inflow water amount of each time period calculated at the start time of each time period on the day is shown in table 8 below, as follows:
TABLE 7
Figure BDA00028361211200002313
Figure BDA0002836121120000241
TABLE 8
Time period 00-08 08-12 12-16 16-20 20-24
Theoretical amount of retained water 21714 18111 18404 23764 17453
Water retention at the start time 20186 7111 9226 5110 16849
Maximum liquid level and water quantity 29700 29700 29700 29700 29700
Theoretical inflow of water 1528 11000 9178 18654 604
Step five is describedThe method for determining whether the water is supplied to the water tank in a time period comprises the following steps: at the beginning of different time periods of the day, the control system is based on
Figure BDA0002836121120000242
Or
Figure BDA0002836121120000243
Whether or not to supply water to the tank is determined by whether or not it is equal to zero when
Figure BDA0002836121120000244
Or
Figure BDA0002836121120000245
When the water supply amount is equal to 0, the control system sends a control signal instruction for closing the water supply to the water tank to the water supply control equipment, and when the water supply amount is equal to 0
Figure BDA0002836121120000246
Or
Figure BDA0002836121120000247
And when the water supply quantity is not equal to 0, the control system sends a control signal instruction for starting water supply to the water tank to the water supply control equipment.
In this embodiment, the theoretical inflow water amount calculated at the starting time of the first time period of day 15/11 is equal to zero, so the control system sends a control signal command for closing to the water inlet solenoid valve, and the theoretical inflow water amounts calculated at the starting times of the other 2 time periods of the day are both greater than zero, so the control system sends control signal commands for opening to the water inlet solenoid valve at the starting times of the two time periods; the theoretical inflow water amount calculated at the starting time of all time periods of day 11, month 16 is larger than zero, so that the control system sends an opening control signal instruction to the water inlet electromagnetic valve at the starting time of all time periods of the day.
The method for determining when the water supply control device is turned off within a time period in the step five comprises the following steps: after the water supply control equipment is started, an inlet flow of the water tank is detected by an inlet flowmeter in real time, the accumulated inflow water quantity of the time period is calculated once every time one piece of inlet flow data is obtained through detection, the calculated accumulated inflow water quantity is compared with the theoretical inflow water quantity of the time period, when the calculated accumulated inflow water quantity is larger than or equal to the theoretical inflow water quantity, a control system sends a control signal instruction for closing water supply to the water tank to stop water supply to the water supply control equipment, and the method for calculating the accumulated inflow water quantity and sending the control signal instruction comprises the following steps:
Figure BDA0002836121120000248
Figure BDA0002836121120000251
Figure BDA0002836121120000252
Figure BDA0002836121120000253
in the formula (20)
Figure BDA0002836121120000254
The cumulative inflow water amount of the time period i of the working day with the date x and the sequence number b,
Figure BDA0002836121120000255
the data of the inlet flow with the time period sequence number of b in the period of i of the working day with the date of x obtained by real-time detection is shown, and the interval time of two adjacent inlet flow data is 1 min.
In the formula (21)
Figure BDA0002836121120000256
Represents the cumulative inflow water amount of the sequence number d in the j time period of the rest day with the date y,
Figure BDA0002836121120000257
indicating that real-time detection is obtainedAnd d is the inlet flow in the sequence of j time periods of the rest day with the date of y.
In the embodiment, the theoretical inflow water amount calculated at 10:00 of 11, month and 15 days is 12339L, the control system sends a control signal command of opening to the water inlet electromagnetic valve at 10:00, then calculates the accumulated inflow water amount once per minute, calculates the accumulated inflow water amount at 11:04 minutes is more than 12339L, and immediately sends a control signal command of closing to the water inlet electromagnetic valve; the theoretical inflow water amount calculated at 00:00 of day 16 in 11 months is 1528L, the control system sends an opening control signal instruction to the water inlet electromagnetic valve, then the accumulated inflow water amount is calculated once per minute, the accumulated inflow water amount calculated at 00:10 minutes is greater than 1528L, and the control system immediately sends a closing control signal instruction to the water inlet electromagnetic valve.
According to the actual data, the theoretical residual water quantity at the starting time of different time periods of a working day or a rest day can be calculated according to the water use characteristics and the lowest liquid level of the water tank, the theoretical inflow water quantity of the time period is calculated by combining the actual residual water quantity of the water tank and the starting time of the highest liquid level at different time periods of the working day or the rest day, and water is supplied to the high-level water tank and the low-level water tank according to the calculated theoretical inflow water quantity, so that water can be stored according to the requirement in a quantitative mode, the retention time of tap water in the water tank is effectively shortened, and the risk that the microbial indicator exceeds the standard due to the overlong retention time of the tap water in the water tank is reduced to the maximum extent.

Claims (8)

1. An intelligent water supply method of a secondary water supply tank is characterized by comprising the following steps:
dividing a day of a working day or a rest day into a plurality of time periods according to the water consumption condition of a water tank on the working day or the rest day;
step two, detecting the outlet flow of the water tank in different time periods of a working day or a rest day in real time continuously for multiple days through monitoring equipment, and calculating the average outflow water quantity and the maximum outflow water quantity of the water tank in different time periods of the working day or the rest day by the control system according to the detected outlet flow;
step three, calculating theoretical residual water quantity of the water tank at the starting moment of different time periods of a working day or a rest day by the control system according to the result of the step two;
step four, detecting the liquid level of the water tank in real time through a liquid level meter, calculating the real-time residual water quantity of the water tank, and calculating the theoretical inflow water quantity of the water tank in different time periods of a working day or a rest day according to the theoretical residual water quantity, the real-time residual water quantity and the maximum water quantity of the water tank at the starting moment of different time periods of the working day or the rest day by a control system;
step five, the control system sends a closing or opening control signal instruction to the water supply control equipment according to the result of the step four at the starting time of different time periods of a working day or a rest day, if the water supply is opened, the control system sends a closing control signal instruction to the water supply control equipment when the conditions are met so as to finish the water supply of the time period, and the water supply of one day is finished in a circulating manner;
the method for dividing the time period in the first step comprises the following steps: dividing the working day into N according to the peak and valley conditions of water consumption in the working day1The time periods are represented by i, and the sequence number of different time periods in one day of the working day is represented by i; dividing the rest day into N according to the peak and valley condition of water consumption in the rest day2Time periods, j represents the sequence number of different time periods in the day of rest;
the method for calculating the average outflow water quantity and the maximum outflow water quantity in the step two comprises the following steps:
s1: obtaining real-time outlet flow data through monitoring equipment;
s2: eliminating invalid outlet flow data;
s3: calculating the outflow water quantity of each time period on different dates according to the obtained effective outlet flow data;
s4: calculating the average outflow water quantity and the maximum outflow water quantity of each time period of a plurality of working days or rest days;
the method for obtaining the real-time outlet flow data in the S1 includes two methods, the first method is to directly obtain the real-time outlet flow data through the outlet flow meter, the second method is to obtain the real-time inlet flow data through the inlet flow meter and the real-time liquid level data through the liquid level meter, and then obtain the real-time outlet flow data through calculation, and the interval time and the total number of data of the obtained inlet flow data and the liquid level data at this time are the interval time and the total number of data of the outlet flow data, and the calculation formula of the second method is as follows:
Figure FDA0003092127510000021
Figure FDA0003092127510000022
in the formula (1), a represents the sequence number of the selected working day, i represents the sequence number of the time period in the day of the working day, and b represents the sequence number of the corresponding data in the time period of i;
Figure FDA0003092127510000023
indicating an outlet flow rate in the order of data b for a time period in the order of data a on a weekday,
Figure FDA0003092127510000024
denotes the inlet flow rate in the order of data b in the order of time period i in the order of day a, Ha/i/bIndicating the liquid level in the data sequence b in the time period sequence a on the working day, Ha/i/(b-1)Represents Ha/i/bS represents the longitudinal sectional area of the water tank, and t represents the interval time between two adjacent data;
in the formula (2), c represents the sequence number of the selected rest days, j represents the sequence number of the time periods in one day of the rest days, and d represents the sequence number of the corresponding data in the time period j;
Figure FDA0003092127510000025
indicating an outlet flow rate in the order of data d for a time period in the order of c on the day of rest,
Figure FDA0003092127510000026
representing an inlet flow rate with a time period sequence of c, a time period sequence of j, a data sequence of d, Hc/j/aIndicating a level in the order of d for a period of time c on the day of rest, Hc/j/(a-1)Represents Hc/j/dS represents the longitudinal sectional area of the water tank, and t represents the interval time of the two data.
2. The intelligent water supply method of the secondary water supply tank according to claim 1, wherein: in S3, the method of calculating the outflow water volume at each time period on different dates includes:
Figure FDA0003092127510000027
Figure FDA0003092127510000028
in the formula (3)
Figure FDA0003092127510000029
N represents the amount of outflow water in the order of time period a on the day and date, niRepresenting the total number of the outlet flow data in the time period of the working day i;
in the formula (4)
Figure FDA00030921275100000210
N represents the amount of effluent in the order of j in the order of c on the day of rest, njRepresenting the total number of outlet flow data in the time period j of the rest day.
3. The intelligent water supply method of the secondary water supply tank as claimed in claim 2, wherein: in S4, the method for calculating the average outflow volume and the maximum outflow volume in each time period on a plurality of working days or holidays comprises:
Figure FDA0003092127510000031
Figure FDA0003092127510000032
Figure FDA0003092127510000033
Figure FDA0003092127510000034
n in the formulas (5) and (6) represents the number of days of a working day or a resting day for statistical calculation,
Figure FDA0003092127510000035
shows the average outflow water quantity of the latest n working days in the i time period,
Figure FDA0003092127510000036
representing the average outflow water quantity of the latest n rest days in the j time period;
in the formulae (7) and (8)
Figure FDA0003092127510000037
Shows the maximum value of the effluent amount in the time period i in the last n working days,
Figure FDA0003092127510000038
and max is the operator for solving the maximum value, wherein the maximum value is the maximum value of the outflow water quantity in the j time period on the latest n rest days.
4. The intelligent water supply method of the secondary water supply tank according to claim 3, wherein: the method for calculating the theoretical water retention amount of the water tank at the starting time of different time periods in one day in the third step comprises the following steps:
Wi＝max{Wi/p，Wi/q} (9)
Figure FDA0003092127510000039
Figure FDA00030921275100000310
Wj＝max{Wj/p，Wj/q} (12)
Figure FDA00030921275100000311
Figure FDA00030921275100000312
w in formula (9)iRepresenting the theoretical amount of water retained at the beginning of the period i of the working day, Wi/pAnd Wi/qIs an intermediate variable, and max { } is an operator for solving the maximum value;
n in the formulae (10) and (11)1Represents the total number of time periods in a day on a weekday, mod is the remainder operator, (imod N)1+1) represents the next slot of the i slot, k1And k2Are two parameters, k, set manually1In the range of 0.4-1.0, k2In the range of 0.05-0.6, H0The minimum liquid level allowed by the water stored in the water tank, and S represents the longitudinal section area of the water tank;
w in formula (12)jRepresenting the theoretical amount of water remaining at the beginning of time period j on the day of rest, Wj/pAnd Wj/qIs an intermediate variable;
n in the formulae (13) and (14)2Representing the total number of time periods in a day of rest, mod being the remainder operator, (jmod N2+1) represents the next slot of the j slot, k3And k4Are two parameters, k, set manually3In the range of 0.4-1.0, k4In the range of 0.05-0.6.
5. The intelligent water supply method of the secondary water supply tank as claimed in claim 4, wherein: the method for calculating the real-time water retention amount of the water tank in the fourth step comprises the following steps:
Figure FDA0003092127510000041
Figure FDA0003092127510000042
in the formula (15)
Figure FDA0003092127510000043
Indicating the liquid level at the beginning of time period i of a working day with date x, S the longitudinal cross-sectional area of the tank,
Figure FDA0003092127510000044
representing the real-time water reserve at the beginning of the time period i of the working day with the date x;
in formula (16)
Figure FDA0003092127510000045
Indicating the liquid level at the beginning of the j period of the day of rest with date y,
Figure FDA0003092127510000046
representing the real-time amount of water remaining at the beginning of time period j of the day of rest with date y.
6. The intelligent water supply method of the secondary water supply tank as claimed in claim 5, wherein: in the fourth step, the method for calculating the theoretical inflow water quantity of the water tank in different time periods in one day at the starting time of each time period in a working day or a rest day comprises the following steps:
Wm＝Hm·S (17)
Figure FDA0003092127510000047
Figure FDA0003092127510000048
w in formula (17)mIndicating the maximum water volume of the tank, HmRepresents the maximum allowable liquid level of the water tank;
in the formula (18)
Figure FDA0003092127510000049
A theoretical inflow water amount indicating a time period i of a working day of date x;
in the formula (19)
Figure FDA0003092127510000051
Representing the theoretical amount of influent water at time j on day of rest with date y.
7. The intelligent water supply method of the secondary water supply tank as claimed in claim 6, wherein: the method for determining whether the water supply tank supplies water in one time period in the step five comprises the following steps: at the beginning of different time periods of the day, the control system is based on
Figure FDA0003092127510000052
Or
Figure FDA0003092127510000053
Whether it is equal to zero to determine whetherIf the water tank is not supplying water, when
Figure FDA0003092127510000054
Or
Figure FDA0003092127510000055
When the water supply amount is equal to 0, the control system sends a control signal instruction for closing the water supply to the water tank to the water supply control equipment, and when the water supply amount is equal to 0
Figure FDA0003092127510000056
Or
Figure FDA0003092127510000057
And when the water supply quantity is not equal to 0, the control system sends a control signal instruction for starting water supply to the water tank to the water supply control equipment.
8. The intelligent water supply method of the secondary water supply tank as claimed in claim 7, wherein: the method for determining when the water supply control device is turned off within a time period in the step five comprises the following steps: after the water supply control equipment is started, an inlet flow of the water tank is detected by an inlet flowmeter in real time, the accumulated inflow water quantity of the time period is calculated once every time one piece of inlet flow data is obtained through detection, the calculated accumulated inflow water quantity is compared with the theoretical inflow water quantity of the time period, when the calculated accumulated inflow water quantity is larger than or equal to the theoretical inflow water quantity, a control system sends a control signal instruction for closing water supply to the water tank to stop water supply to the water supply control equipment, and the method for calculating the accumulated inflow water quantity and sending the control signal instruction comprises the following steps:
Figure FDA0003092127510000058
Figure FDA0003092127510000059
Figure FDA00030921275100000510
Figure FDA00030921275100000511
in the formula (20)
Figure FDA00030921275100000512
The cumulative inflow water amount of the time period i of the working day with the date x and the sequence number b,
Figure FDA00030921275100000513
the method comprises the steps of representing the inlet flow with the time period sequence number of b in the period i of a working day with the date of x obtained through real-time detection, and representing the interval time of two adjacent inlet flow data;
in the formula (21)
Figure FDA00030921275100000514
Represents the cumulative inflow water amount of the sequence number d in the j time period of the rest day with the date y,
Figure FDA00030921275100000515
and the inlet flow with the sequential number d of j time periods on the rest day with the date y detected in real time is shown.
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