CN112923989A - Household terminal water consumption monitoring method and intelligent water meter - Google Patents

Household terminal water consumption monitoring method and intelligent water meter Download PDF

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CN112923989A
CN112923989A CN202110206374.9A CN202110206374A CN112923989A CN 112923989 A CN112923989 A CN 112923989A CN 202110206374 A CN202110206374 A CN 202110206374A CN 112923989 A CN112923989 A CN 112923989A
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flow
water
terminal
vector
probability
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CN112923989B (en
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朱永楠
赵勇
师林蕊
何国华
姜珊
王庆明
李海红
王丽珍
翟家齐
何凡
秦长海
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China Institute of Water Resources and Hydropower Research
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China Institute of Water Resources and Hydropower Research
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/068—Indicating or recording devices with electrical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
    • G01F15/075—Integration to give total flow, e.g. using mechanically-operated integrating mechanism using electrically-operated integrating means
    • G01F15/0755—Integration to give total flow, e.g. using mechanically-operated integrating mechanism using electrically-operated integrating means involving digital counting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
    • G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
    • G07F15/10—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with alarm or warning devices, e.g. indicating the interrupting of the supply

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Abstract

The invention discloses a method for monitoring water consumption of a home terminal and an intelligent water meter, wherein the monitoring method comprises the steps of S1 obtaining a flow time sequence vector monitored during a water use event, and calculating the gradient of the flow time sequence vector by adopting the flow time sequence vector; s2, judging whether the gradient has an instantaneous flow gradient larger than a preset threshold value, if so, entering a step S3, otherwise, entering a step S4; s3, splitting the flow time sequence vector of the water use event into a plurality of terminal flow vectors according to the sudden change condition of the instantaneous flow in the time sequence vector; s4, comparing each terminal flow vector with the flow vector sets of all water terminals stored in the database, and finding out the corresponding water terminal; and S5, accumulating the water usage flow corresponding to the terminal flow vector during the water usage event to the total water usage flow of the searched water usage terminal.

Description

Household terminal water consumption monitoring method and intelligent water meter
Technical Field
The invention relates to a flow monitoring technology, in particular to a method for monitoring water consumption of a home terminal and an intelligent water meter.
Background
The city propagates the water conservation greatly and is done from everyone, improves the water conservation consciousness of the residents. With the gradual popularization of the remote-transmission type charging or pre-storing water rate mode, although the trouble of manual meter reading is avoided, the attention of residents to the household water is lower and lower, and a plurality of residents have no knowledge about the condition of the household water. Many residents do not understand the water meter reading or are unwilling to calculate the water consumption of the month.
Therefore, in order to conveniently check the water consumption condition for residents and perform water saving operation in a targeted manner, a water meter convenient for checking water quantity information needs to be developed urgently, the water quantity information of the water meter is detailed to each type of water consumption terminal of a family, the residents can read the meter conveniently and clearly inquire the water consumption condition of each type of water consumption terminal of the family, and water saving measures are taken in a more targeted manner.
Disclosure of Invention
Aiming at the defects in the prior art, the method for monitoring the water consumption of the home terminal and the intelligent water meter provided by the invention solve the problem that the collected flow cannot be distributed to a specific water consumption terminal in the prior art.
In order to achieve the above-mentioned problem, the invention adopts the technical scheme that:
in a first aspect, a method for monitoring water consumption of a home terminal is provided, which includes:
s1, obtaining flow time sequence vectors monitored during the water use event, and calculating the gradient of the flow time sequence vectors by adopting the flow time sequence vectors;
s2, judging whether an instantaneous flow gradient larger than a preset threshold exists in the gradient, if so, entering a step S3, otherwise, entering a step S4;
s3, splitting the flow time sequence vector of the water use event into a plurality of terminal flow vectors according to the sudden change condition of the instantaneous flow in the time sequence vector;
s4, comparing each terminal flow vector with the flow vector sets of all the water using terminals stored in the database, and finding out the corresponding water using terminal;
and S5, accumulating the water usage flow corresponding to the terminal flow vector during the water usage event to the total water usage flow of the searched water usage terminal.
The second aspect provides an intelligent water meter capable of automatically distributing water consumption of a home terminal, which comprises a water meter shell, a display screen arranged on the water meter shell and a water meter body which is arranged together with the water meter shell and used for collecting water flow, wherein a data processing module used for executing a water consumption monitoring method of the home terminal is at least arranged in the water meter shell.
The invention has the beneficial effects that: according to the scheme, whether a plurality of water using terminals are started at present can be determined through the gradient of the flow time sequence vector, the flow time sequence vector is split into a plurality of terminal flow vectors based on the sudden change condition of the instantaneous flow in the time sequence vector, and then the water using terminal corresponding to each terminal flow vector is found by combining the data stored in the database, so that the water using amount of each water using terminal is monitored.
The monitoring method of the scheme is adopted to realize the monitoring of the water consumption of each water consumption terminal, after the monitoring method is applied to the intelligent water meter, residents can know the total domestic water consumption of families every day, every month and every year and the water consumption of each type of water consumption terminal in detail, and water saving measures are taken in a targeted manner according to the domestic water consumption condition, so that the aim of saving water is finally fulfilled.
Drawings
Fig. 1 is a flow chart of a method for monitoring water consumption of a home terminal.
Fig. 2 is a graph of a flow time series vector.
Fig. 3 is a perspective view of an intelligent water meter for automatically distributing water consumption of a home terminal.
Fig. 4 is a block diagram of an intelligent water meter for automatically distributing water consumption of a home terminal.
Wherein, 1, a water meter shell; 2. a water meter body; 3. a display screen; 4. a water meter function button; 5. a water card sensor; 6. a power supply module; 7. a data processing module; 8. a data set sum storage module; 9. a leakage alarm device.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Referring to fig. 1, fig. 1 shows a flowchart of a water consumption monitoring method of a home terminal, as shown in fig. 1, the method S includes steps S1 to S5.
In step S1, a flow time series vector monitored during the occurrence of the water use event is acquired, and the gradient of the flow time series vector is calculated using the flow time series vector;
flow time series vector a ═ a1,a2…af…an) Wherein
Figure BDA0002950912390000031
afF is more than or equal to 1 and less than or equal to n, v is the instantaneous flow at the f-th moment in the flow time sequence vector AfIs the instantaneous flow rate at time f; d is the pipe diameter of the water pipe at the installation position of the flow acquisition module.
Gradient of flow time series vector G ═ G1,g2…qf…gn-1)，
Figure BDA0002950912390000032
Wherein g isfIs the instantaneous flow gradient at time f.
In step S2, determining whether an instantaneous flow gradient greater than a preset threshold exists in the gradients, if so, going to step S3, otherwise, going to step S4;
in step S3, the flow rate time-series vector of the water use event is divided into a plurality of terminal flow rate vectors according to the sudden change of the instantaneous flow rate in the time-series vector.
In this embodiment, step S3 preferably further includes:
s31, calculating increment and decrement when instantaneous flow suddenly changes during the water using event;
s32, dividing the data with the increment quantity equal to the decrement quantity into a group, and determining the number of water using events according to the number of the group;
and S33, splitting the flow time sequence vector into a plurality of terminal flow vectors according to the instant flow at the increasing moment and the instant flow in the time length between the same set of increasing quantity and decreasing quantity.
As shown in fig. 2, the splitting of the flow time series vector is explained by taking a flow time series vector obtained by starting 2 water terminals in the same period of time as an example:
in FIG. 2, the instantaneous flow rates at the j-th time and the k-th time are abruptly changed, the change of the flow vector in the j-1 to j time periods is equal to the change of the flow vector in the k-1 to k time periods, and aj-1-aj≈-(ak-1-ak) Then at tj≤t≤tkTwo water using terminals are started simultaneously.
Splitting the flow vector of the superimposed water use event into a single water use event flow vector:
water use event 1: a. the1＝(a1,a2…,aj,aj…,aj,ak,…,an)
Water use event 2: a. the2＝(aj-aj,aj+1-aj,aj+2-aj,…ak-2-aj,ak-1-aj,ak-aj) (ii) a A in FIG. 2jIs the instantaneous flow at the time of the increment.
In step S4, each terminal flow vector is compared with the flow vector sets of all the water terminals stored in the database, and the corresponding water terminal is found.
In an embodiment of the present invention, the step S4 further includes:
in step S41, a flow vector set of all the water using terminals in the database is obtained;
in step S42, selecting an unexploded terminal traffic vector, and respectively determining whether the length of the traffic vector in each traffic vector set is equal to the length of the terminal traffic vector, if so, entering step S44, otherwise, entering step S43;
in step S43, adjusting the length of the terminal traffic vector until the length is equal to the length of any traffic vector a in the traffic vector set, and then proceeding to step S44;
in implementation, the present solution preferably adjusts the length of the terminal traffic vector until the length of the terminal traffic vector is equal to the length of any traffic vector a in the traffic vector set, and further includes:
s431, when the length of the terminal flow vector is larger than the flow vector with the maximum length in the flow vector set, one section with stable flow in the terminal flow vector is removed, and the length of the section is equal to the flow vector with the maximum length; in this step, any flow vector a is the maximum length flow vector.
S432, when the length of the terminal flow vector is smaller than the flow vector with the minimum length in the flow vector set, copying a section of flow stable data in the terminal flow vector to enable the length of the flow stable data to be equal to the flow vector with the minimum length; in this step, any traffic vector a is the minimum-length traffic vector.
And the stable flow is corresponding instantaneous flow data when the instantaneous flow gradient in the terminal flow vector is equal to zero.
In step S44, random vectors equal to the number of the traffic vector sets and having lengths equal to the lengths of the traffic vectors a in the traffic vector sets, respectively, are generated, and the terminal traffic vectors, the traffic vectors a, and the random vectors having the same lengths are divided into a group;
in step S45, the degree of matching between the terminal traffic vector X in each group and the traffic vector a and the random vector is calculated:
DAk,j＝Dk,j×vk×qf,k×tk×qmax,k
DAX,j＝Dt,j×vt×qf,t×tt×qmax,t
wherein, DAk,jAnd DAX,jRespectively the matching degree of the flow vector A and the random vector and the matching degree of the terminal flow vector X and the random vector; v. ofkAnd vtInstantaneous flow rates at times k and t, respectively; q. q.sf,kAnd q isf,tRespectively monitoring the steady flow of the flow and the common flow of the water using terminal corresponding to the terminal flow vector X; t is tkAnd tXRespectively the duration of the flow vector A and the terminal flow vector; q. q.smax,kAnd q ismax,XThe maximum flow of the monitored flow and the maximum flow of the water using terminal corresponding to the terminal flow vector X are respectively.
Calculating the ratio of the difference value of the two matching degrees to the corresponding matching degree of the flow vector A:
Figure BDA0002950912390000061
where RD is the ratio.
In step S46, it is determined whether there are at least two ratios smaller than the determination threshold, if so, step S47 is performed, otherwise, the water terminal corresponding to the ratio smaller than the determination threshold is used as the water terminal corresponding to the terminal flow vector, and step S48 is performed;
in step S47, the occurrence probabilities of the water use terminals corresponding to the ratios smaller than the judgment threshold in the database are read and compared, the water use terminal corresponding to the maximum occurrence probability is used as the water use terminal corresponding to the generated terminal flow vector, and the process proceeds to step S48;
wherein the occurrence probability comprises a total probability and a total transition probability;
when the flow of the water using terminal corresponding to the ratio smaller than the judgment threshold is equal to the common flow corresponding to the terminal flow vector, selecting the total probability as the occurrence probability;
and when the flow of the water using terminal corresponding to the ratio smaller than the judgment threshold is not equal to the common flow corresponding to the terminal flow vector, selecting the total transition probability as the occurrence probability.
In step S48, it is determined whether all the terminal traffic vectors have been matched to the corresponding water terminals, if yes, the process proceeds to step S5, otherwise, the process returns to step S42.
In step S5, the water usage flow corresponding to the terminal flow vector during the water usage event is added to the total water usage flow of the searched water usage terminal.
In an embodiment of the present invention, the method for constructing the database includes:
a1, executing the steps A11 to A14 for each acquired flow vector of each water use terminal:
a11, each flow vector of the water using terminal is:
Aat(i)＝(Q1,Q2…Qt,qt＝i)，Abt(i)＝(Qt+1,Qt+2…QT,qt＝i)
wherein A isat(i) The water flow is between 1 and t time, and the common flow is i; a. thebt(i) The water flow is between 1 and T time, and the common flow is i; q is the instantaneous flow; q. q.stThe flow rate is the common flow rate of the water terminal X;
a12, when the water use end has water flow Aat(i) And Abt(i) Then, the probability of the observed sequence is:
pat(i)＝P(Q1,Q2…Qt,qt＝i)，pbt(i)＝P(Qt+1,Qt+2…QT,qt＝i)
wherein p isat(i) And pbt(i) The probability of the flow vector when the water using terminal normally uses the flow as i at the time t is shown;
a13, calculating the probability gamma of water using event when the water using terminal has the common flow rate i at the time tt(i)：
Figure BDA0002950912390000071
Wherein, γt(i) The probability of the water using event occurring when the common flow rate of the water using terminal is i at the time t is shown as follows;
a14, calculating the probability epsilon that the water terminal is in the state i of the common flow at the time t and in the state j of the common flow at the time t +1t(i,j)：
Figure BDA0002950912390000072
Figure BDA0002950912390000073
P(qt＝q,qt+1＝j)＝pat(i)aijbj(ot+1)pb(t+1)(j)
Wherein, P (q)t＝i,qt+1J) is the flow rate when the common flow rate at the time t is i and the common flow rate at the time t +1 is j; p (O | λ) is the total probability at times t and t + 1; q. q.st+1The common flow rate of the water using terminal at the time of t +1 is j; p is a radical ofb(t+1)(p) is the probability that the state is p at time t + 1; n, k and p are all common flow values; a iskpFor common flow from state k to pA total transition probability; bj(ot+1) And bp(ot+1) Randomly selecting the probability that the common flow is j and p at the moment of t +1 in all observation sequences of data;
a2, calculating the expected times C of each flow vector of each water use terminal when the common flow is i, the expected times D of conversion of the common flow from i and the expected times E of conversion of the common flow from i to j:
Figure BDA0002950912390000081
a3, calculating the total probability according to the expected times C, the expected times D and the expected times E of each flow vector of each water terminal
Figure BDA0002950912390000082
And total transition probability
Figure BDA0002950912390000083
Figure BDA0002950912390000084
A4, multiple flow vectors using multiple water terminals and their corresponding total probability
Figure BDA0002950912390000085
And total transition probability
Figure BDA0002950912390000086
And a database is formed, and the flow vector set is formed by a plurality of flow vectors of the same water using terminal.
As shown in fig. 3 and 4, the intelligent water meter capable of automatically distributing the water consumption of the home terminal provided by the scheme comprises a water meter shell 1, a display screen 3 installed on the water meter shell 1, and a water meter body 2 installed together with the water meter shell 1 and used for collecting the water flow, wherein at least a data processing module 7 used for executing a home terminal water consumption monitoring method is installed in the water meter shell 1.
This scheme is through on the flow data that gathers at every turn with the water gauge specifically distributes the specific water terminal of user's family, and the user can know the water consumption at every water terminal directly perceivedly like this through the water gauge to carry out corresponding using water wisely.
In the implementation, the preferred water meter shell 1 is also internally provided with a power module 6, a data aggregation and storage module 8 and a leakage alarm device 9; the water meter body 2 comprises a flow acquisition module and a communication module which are connected with each other;
the power module 6 and the data processing module 7 are connected with the communication module, the display screen 3, the data aggregation and storage module 8 and the leakage alarm device 9, and the data processing module 7 is connected with the power module 6.
The surface of the water meter shell 1 is also provided with a water meter function key 4 and a water card sensor 5 which are respectively connected with a power module 6 and a data processing module 7.
When the intelligent water meter is used, after the flow acquisition module monitors water flow information (metering flow and flow velocity), the communication module transmits the water flow information to the data processing module 7, the data processing module 7 distributes water consumption according to a household terminal water consumption monitoring method, and the metering water flow is distributed to the water terminal.
After the data processing and calculation is finished, the calculation result is transmitted to the data aggregation and storage module 8 to record the flow distribution result every time, automatically accumulate and calculate the total daily water consumption, the total monthly water consumption and the total annual water consumption of the family, and automatically accumulate and calculate the total daily water consumption, the total monthly water consumption and the total annual water consumption of each type of water terminals (a faucet, a shower, a washing machine and a closestool).
The data aggregation and storage module 8 transmits the current-month water consumption to the display screen 3, and the display screen 3 displays the total water consumption reading and the current-month water consumption. If the flow acquisition module monitors continuous water flow information within 1 hour, the data processing module 7 judges that the water leakage condition of the household pipeline or appliance is likely to occur, a signal is sent to the leakage alarm device 9, an alarm buzzer sends out an alarm, and meanwhile the display screen 3 can display the alarm prompt of possible leakage.
When the water meter function key 4 is adopted to select and inquire the water consumption, the data aggregation and storage module 8 uploads the data of the selected items to the display screen 3.
In conclusion, the household terminal water consumption monitoring method and the intelligent water meter provided by the scheme can distribute the acquired water flow to the specific water using terminal, so that a user can know the water using condition of each water using terminal, the water consumption can be adjusted in a targeted manner, and the purpose of saving water is achieved.

Claims (10)

1. The household terminal water consumption monitoring method is characterized by comprising the following steps:
s1, obtaining flow time sequence vectors monitored during the water use event, and calculating the gradient of the flow time sequence vectors by adopting the flow time sequence vectors;
s2, judging whether an instantaneous flow gradient larger than a preset threshold exists in the gradient, if so, entering a step S3, otherwise, entering a step S4;
s3, splitting the flow time sequence vector of the water use event into a plurality of terminal flow vectors according to the sudden change condition of the instantaneous flow in the time sequence vector;
s4, comparing each terminal flow vector with the flow vector sets of all the water using terminals stored in the database, and finding out the corresponding water using terminal;
and S5, accumulating the water usage flow corresponding to the terminal flow vector during the water usage event to the total water usage flow of the searched water usage terminal.
2. The method for monitoring water consumption of a home terminal according to claim 1, wherein the step S4 further comprises:
s41, acquiring flow vector sets of all water using terminals in the database;
s42, selecting an unexploded terminal traffic vector, and respectively judging whether the length of the traffic vector in each traffic vector set is equal to the length of the terminal traffic vector, if so, entering the step S44, otherwise, entering the step S43;
s43, adjusting the length of the terminal traffic vector until the length is equal to the length of any traffic vector A in the traffic vector set, and then entering the step S44;
s44, generating random vectors which are equal to the number of the traffic vector sets and the lengths of which are respectively equal to the length of a traffic vector A in the traffic vector sets, and dividing the terminal traffic vectors, the traffic vector A and the random vectors which are equal in length into a group;
s45, calculating the matching degree of the terminal flow vector in each group with the flow vector A and the random vector respectively, and calculating the ratio of the difference value of the two matching degrees to the matching degree corresponding to the flow vector A;
s46, judging whether at least two ratios are smaller than a judgment threshold value, if so, entering the step S47, otherwise, taking the water terminal corresponding to the ratio smaller than the judgment threshold value as the water terminal corresponding to the terminal flow vector, and entering the step S48;
s47, reading the occurrence probability of the water terminal corresponding to the ratio smaller than the judgment threshold in the database, comparing, taking the water terminal corresponding to the maximum occurrence probability as the water terminal corresponding to the generated terminal flow vector, and entering the step S48;
and S48, judging whether all the terminal flow vectors are matched with the corresponding water using terminals, if so, entering a step S5, and otherwise, returning to the step S42.
3. The home terminal water consumption monitoring method according to claim 2, wherein the occurrence probability comprises a total probability and a total transition probability;
when the flow of the water using terminal corresponding to the ratio smaller than the judgment threshold is equal to the common flow corresponding to the terminal flow vector, selecting the total probability as the occurrence probability;
and when the flow of the water using terminal corresponding to the ratio smaller than the judgment threshold is not equal to the common flow corresponding to the terminal flow vector, selecting the total transition probability as the occurrence probability.
4. The method for monitoring water consumption of a home terminal according to claim 2 or 3, wherein the adjusting the length of the terminal flow vector until the length of the terminal flow vector is equal to the length of any flow vector A in the flow vector set further comprises:
s431, when the length of the terminal flow vector is larger than the flow vector with the maximum length in the flow vector set, one section with stable flow in the terminal flow vector is removed, and the length of the section is equal to the flow vector with the maximum length;
and S432, when the length of the terminal flow vector is smaller than the flow vector with the minimum length in the flow vector set, copying a section of flow stable data in the terminal flow vector to enable the length of the flow stable data to be equal to the flow vector with the minimum length.
5. The method as claimed in claim 4, wherein the flow is smoothed into corresponding instantaneous flow data when the instantaneous flow gradient in the terminal flow vector is equal to zero.
6. The method for monitoring water consumption of a home terminal according to claim 1, wherein the step S3 further comprises:
s31, calculating increment and decrement when instantaneous flow suddenly changes during the water using event;
s32, dividing the data with the increment quantity equal to the decrement quantity into a group, and determining the number of water using events according to the number of the group;
and S33, splitting the flow time sequence vector into a plurality of terminal flow vectors according to the instant flow at the increasing moment and the instant flow in the time length between the same set of increasing quantity and decreasing quantity.
7. The household terminal water consumption monitoring method as claimed in claim 1, wherein the database construction method comprises:
a1, executing the steps A11 to A14 for each acquired flow vector of each water use terminal:
a11, each flow vector of the water using terminal is:
Aat(i)＝(Q1，Q2...Qt，qt＝i)，Abt(i)＝(Qt+1，Qt+2...QT，qt＝i)
wherein A isat(i) The water flow is between 1 and t time, and the common flow is i; a. thebt(i) The water flow is between 1 and T time, and the common flow is i; q is the instantaneous flow; q. q.stThe flow rate is the common flow rate of the water terminal X;
a12, when the water use end has water flow Aat(i) And Abt(i) Then, the probability of the observed sequence is:
pat(i)＝P(Q1，Q2...Qt，qt＝i)，pbt(i)＝P(Qt+1，Qt+2...QT，qt＝i)
wherein p isat(i) And pbt(i) The probability of the sequence vector is when the common flow of the water using terminal X is i at the time t;
a13, calculating the probability gamma of water using event when the water using terminal has the common flow rate i at the time tt(i)：
Figure FDA0002950912380000041
Wherein, γt(i) The probability that the water consumption event occurs when the common flow rate of the water consumption terminal is i at the time t is shown;
a14, calculating the probability epsilon that the water terminal is in the state i of the common flow at the time t and in the state j of the common flow at the time t +1t(i，j)：
Figure FDA0002950912380000042
Figure FDA0002950912380000043
P(qt＝i，qt+1＝j)＝pat(i)aijbj(ot+1)pb(t+1)(j)
Wherein, P (q)t＝i，qt+1J) is the flow rate when the common flow rate at the time t is i and the common flow rate at the time t +1 is j; p (O | λ) is the total probability at times t and t + 1; q. q.st+1The common flow rate of the water using terminal at the time of t +1 is j; p is a radical ofb(t+1)(p) is the probability that the state is p at time t + 1; n, k and p are all common flow values; a iskpIs the total transition probability of the usual traffic from state k to p; bj(ot+1) And bp(ot+1) Randomly selecting the probability that the common flow is j and p at the moment of t +1 in all observation sequences of data;
a2, calculating the expected times C of each flow vector of each water use terminal when the common flow is i, the expected times D of conversion of the common flow from i and the expected times E of conversion of the common flow from i to j:
Figure FDA0002950912380000044
a3, calculating the total probability according to the expected times C, the expected times D and the expected times E of each flow vector of each water terminal
Figure FDA0002950912380000045
And total transition probability
Figure FDA0002950912380000046
Figure FDA0002950912380000047
A4, multiple flow vectors using multiple water terminals and their corresponding total probability
Figure FDA0002950912380000051
And total transition probability
Figure FDA0002950912380000052
Form aA database.
8. An intelligent water meter capable of automatically distributing water consumption of a home terminal is characterized by comprising a water meter shell, a display screen arranged on the water meter shell and a water meter body which is arranged together with the water meter shell and used for collecting water consumption, wherein at least a data processing module used for executing the water consumption monitoring method of the home terminal as claimed in claims 1-7 is arranged in the water meter shell.
9. An intelligent water meter for automatically distributing water consumption of a home terminal according to claim 8, wherein a power module, a data aggregation and storage module and a leakage alarm device are further installed in the water meter housing; the water meter body comprises a flow acquisition module and a communication module which are connected with each other;
the power module and the data processing module are connected with the communication module, the display screen, the data set sum storage module and the leakage alarm device, and the data processing module is connected with the power module.
10. An intelligent water meter for automatically distributing water consumption of a home terminal according to claim 9, wherein the surface of the water meter housing is further provided with a water meter function button and a water card sensor which are respectively connected with the power supply module and the data processing module.
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