KR102412132B1 - Method for managing apparent losses by analyzing water meter and customer water consumption - Google Patents

Abstract

According to an embodiment of the present invention, a basic analysis step of detecting a customer having at least one problem by performing a plurality of basic analyzes for each customer based on customer information, and and a notification providing step of providing check items, wherein the plurality of basic analyzes are analysis of over-test period, unused analysis, appropriate diameter analysis, usage deviation analysis, allowable range analysis, repeated usage analysis, slope analysis, maximum guideline excess analysis, A water meter and a water meter that reduces the flow rate by collectively analyzing various information on customers in one system by providing a water meter and a nominal loss management method through usage analysis, including total usage analysis and meter reading analysis By identifying factors related to usage and providing information to carry out appropriate on-site measures, it is possible to improve the flow rate by managing the nominal loss.

Description

{Method for managing apparent losses by analyzing water meter and customer water consumption}

The present invention relates to a water meter and a method for managing a nominal loss through usage analysis.

The flow rate is the ratio of the amount of water used by each consumer to the amount of water supplied. The amount of supply is the sum of the amount of water used by each consumer and the amount of leakage. Since water bills are charged based on the amount of water used by consumers, accurate calculation and aggregation of the water flow rate is an important factor in water supply management. In order to improve the flow rate, it is important not only to reduce the amount of leakage but also to increase the amount of water used.

However, when counting usage, nominal losses occur due to various causes in reality. Nominal loss is the amount actually used but not reflected in the water meter reading. For example, errors due to aging or breakdown of water meters, errors related to the arbitrary accreditation meter reading by the water meter manager, and incorrect water meter caliber, etc., occur due to various causes of usage counting errors. Without considering these nominal losses, there is a limit to improving the flow rate only by improving the facilities to reduce the amount of water leakage. In addition, there is a problem that there is no consistent analysis method for analyzing the amount of information related to the consumer because the amount of information related to the consumer is vast and there are various causes that cause errors in usage counting.

KR 10-1731215 B1

An object according to an embodiment of the present invention is to collectively analyze various information about consumers in one system, identify factors that decrease the flow rate as a whole, and perform appropriate on-site measures to manage the nominal loss and to manage the flow rate To provide information to improve

In addition, an object according to an embodiment of the present invention is to detect various types of causes that cause a nominal loss of water supply resources, analyze various causes in a complex manner, and provide information on necessary on-site measures to water service providers. will be.

A method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention is a basic analysis step of detecting a customer having at least one problem by performing a plurality of basic analyzes for each customer based on customer information , may include a notification providing step of providing necessary check items according to the result of performing the basic analysis step, wherein the plurality of basic analysis is a test period over analysis, unused analysis, appropriate caliber analysis, usage deviation analysis, allowable range It may include at least one of analysis, usage repetition analysis, slope analysis, maximum guideline excess analysis, total usage analysis, and meter reading value analysis.

In addition, in the method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention, after the basic analysis step, the results of each of the analyzes obtained as a result of performing the basic analysis step are comprehensively analyzed Thus, it may further include a comprehensive analysis step of determining the necessary check items.

In addition, the verification period over analysis may be to calculate the period of use from the installation year to the present of the water meter installed in the consumer, and to determine whether the standard verification period of the water meter determined based on the caliber of the water meter has been exceeded.

In addition, the non-use analysis may be to determine whether the water consumption of the consumer is 0 or lower than the minimum water usage of the single-person household during the analysis period determined from recently.

In addition, the appropriate diameter analysis compares the water usage of the consumer with the minimum and maximum usage by diameter of the water meter installed in the consumer, and whether the diameter of the water meter is appropriate, excessive, or insufficient compared to the water consumption of the consumer It may be to determine whether

In addition, the usage deviation analysis may be based on the monthly usage for a period from the time the water meter is installed in the consumer to the present, to determine whether the monthly usage of the consumer is out of a standard deviation range.

In addition, the allowable range analysis calculates the number of months in which the monthly usage is outside the allowable range determined using the average usage based on the monthly usage from the time the water meter is installed in the consumer to the present, and the allowable range It may be to determine whether the number of months deviating from is greater than the reference number.

In addition, the repeated analysis of usage may be to determine whether or not various values exceeding a predetermined number appear by determining whether the remaining values are the same except for the value measured as 0 among the monthly meter readings of consumers.

In addition, the slope analysis may be to analyze the trend of the consumer's monthly usage as a slope to determine whether or not a downward trend below a predetermined reference slope is indicated.

In addition, the maximum guideline excess analysis compares the total usage amount plus the monthly usage for the period from the time the water meter is installed in the consumer to the point of analysis with the maximum guide value determined according to the diameter of the water meter, and the total usage is the maximum guide value It may be to determine whether it exceeds.

In addition, in the total usage analysis, it is determined whether there is a difference between the total usage amount plus the monthly usage for the period from the time the water meter is installed at the customer to the point of analysis and the guide value of the current water meter, and if there is a difference, the difference is It may be to determine whether it is greater than a standard.

In addition, the meter reading value analysis may be to determine whether the number of months in which the difference exists by determining the difference between the consumer's usage amount and the meter reading amount on a monthly basis is equal to or greater than a predetermined reference number of months.

In addition, in the comprehensive analysis step, if it is determined that there is a problem in any one analysis as a result of performing appropriate diameter analysis, usage deviation analysis, allowable range analysis, usage repetition analysis, slope analysis, and meter reading value analysis for the consumer, precise analysis In the precise analysis and judgment step of determining that this is necessary, the equipment number of the water meter installed in the customer does not exist, or as a result of performing unused analysis, maximum guideline excess analysis, and total usage analysis, it is determined that there is a problem in any one analysis It may include a field investigation determination step of determining that an on-site investigation is necessary, and a replacement determination step of determining that replacement of the water meter is necessary when it is determined that there is a problem as a result of performing the analysis over the inspection period.

In addition, the checklist may include a result of each of the basic analyzes determined to have a problem in the comprehensive analysis step, and a manual for performing the detailed analysis, field investigation, or replacement.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims should not be construed in a conventional and dictionary meaning, and the inventor may properly define the concept of a term to describe his invention in the best way. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

According to an embodiment of the present invention, various information about consumers is analyzed collectively in one system to identify factors related to water meters and usage that decrease the flow rate and provide information for performing appropriate on-site measures By doing so, it is possible to improve the flow rate by managing the nominal loss.

In addition, according to an embodiment of the present invention, various types of causes that cause a nominal loss of water supply resources are detected, various causes are complexly analyzed, and information on necessary on-site measures is provided to the water service provider. Operators can efficiently manage the water supply network.

1 is a block diagram illustrating an apparatus for managing a nominal loss for providing a method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention.
2 is a flowchart illustrating each step of a method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention.
Figure 3 is a flowchart showing each step of the equipment number confirmation according to an embodiment of the present invention.
4 is a flow chart showing each step of the water meter verification period excess analysis (hereinafter, the verification period excess analysis) according to an embodiment of the present invention.
5 is a flowchart showing each step of the consumer unused analysis (hereinafter, unused analysis) according to an embodiment of the present invention.
6 is a flow chart showing each step of the water meter proper caliber analysis (hereinafter referred to as appropriate caliber analysis) according to an embodiment of the present invention.
7 is a flowchart showing each step of the consumer usage variation analysis (hereinafter, usage variation analysis) according to an embodiment of the present invention.
8 is a flowchart showing each step of the analysis of the acceptable range of consumption by consumers (hereinafter, the analysis of the acceptable range) according to an embodiment of the present invention.
9 is a flowchart illustrating each step of the consumer usage repetition analysis (hereinafter referred to as usage repetition analysis) according to an embodiment of the present invention.
10 is a flowchart showing each step of the consumer usage slope analysis (hereinafter, slope analysis) according to an embodiment of the present invention.
11 is a flowchart showing each step of the water meter maximum guideline over-analysis (hereinafter referred to as maximum guide-over analysis) according to an embodiment of the present invention.
12 is a flowchart illustrating each step of the consumer total usage difference analysis (hereinafter, total usage difference analysis) according to an embodiment of the present invention.
13 is a flowchart illustrating each step of water meter reading value analysis (hereinafter, meter reading value analysis) according to an embodiment of the present invention.
14 is a flowchart illustrating each step of a method for managing a nominal loss through water meter and usage analysis further including a comprehensive analysis step according to an embodiment of the present invention.
15 is a flowchart illustrating each step of a method for managing a nominal loss through water meter and usage analysis further including other analysis steps according to an embodiment of the present invention.

The objects, specific advantages and novel features of one embodiment of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In the present specification, in adding reference numbers to the components of each drawing, it should be noted that only the same components are given the same number as possible even though they are indicated on different drawings. In addition, terms such as "one side", "the other side", "first", "second" etc. are used to distinguish one component from another component, and the component is limited by the terms not. Hereinafter, in describing an embodiment of the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of an embodiment of the present invention will be omitted.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a nominal loss amount management apparatus 10 for providing a nominal loss amount management method through a water meter and usage analysis according to an embodiment of the present invention.

As shown in FIG. 1 , the apparatus 10 for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention includes a customer information database 12 , an analysis unit 13 , and a notification providing unit 14 . ), and may further include a data collection unit 11 . The nominal loss amount management apparatus 10 may further include a communication unit 15 , an input/output unit 16 , and a storage unit 17 .

The customer information database 12 stores information about the customer, such as customer number, address, name, type of business, caliber, number of households, supply status, article number, installation date, name change date, etc. assigned to the customer. The customer number is a serial number assigned to each customer to identify the customer. The address is the address of the consumer. The name is the name of the person to whom the water bill is issued by using the water supply at the customer. Industry refers to the type of customer. Industry is information related to classification of facilities such as homes, schools, public facilities, factories, and industrial complexes. The number of households indicates the number of households residing in the consumer. The supply status indicates whether or not water is being supplied by the consumer. The supply status can be recorded as 'opened' when water supply is used by the consumer, and can be recorded as 'closed' when the consumer does not use tap water. The equipment number is the serial number of the water meter installed at the customer. The first two digits of the article number indicate the last two digits (17) of the four digits (2017) of the water meter production year, and can generally be regarded as the year the water meter was installed in the consumer. Therefore, in this specification, it is assumed that the first two digits of the article number are the year in which the water meter was installed in the consumer. The installation date is the date the water meter was installed in the customer. The date of name change is the date on which the name of the person who resides in the customer's house and is issued a water bill is changed to another person.

The analysis unit 13 may perform a basic analysis step ( S30 ). The analysis unit 13 may perform a basic analysis step S30 to perform a plurality of basic analyzes for each customer based on the customer information to detect a customer having at least one problem. As a result of performing a plurality of basic analyzes, the analysis unit 13 may output information regarding which consumers have which problems.

The analysis unit 13 may further perform the comprehensive analysis step ( S32 ). Based on the result of performing the basic analysis step (S30), the analysis unit 13 may determine, according to a predetermined order, the check items to be performed preferentially when one or more problems exist in the consumer.

The analysis unit 13 may further perform other analysis steps. The analysis unit 13 may perform each analysis of the other analysis steps or may provide data necessary for performing each analysis.

The notification providing unit 14 may perform the notification providing step (S40). The notification providing unit 14 may provide necessary inspection items by performing the notification providing step (S40). Based on the information received from the analysis unit 13, the notification providing unit 14 may provide customer information, problems occurring in the customer, necessary check items, and the like. The notification providing unit 14 may provide inspection items to the manager or inspector through the communication unit 15 and the input/output unit 16 , and record the details of providing the inspection items in the storage unit 17 . The check items may include the results of each of the basic analyzes determined to have a problem in the comprehensive analysis step (S32), and a manual for performing detailed analysis, field investigation, or replacement. For example, if it is determined that there is a problem in both the proper caliber analysis and the meter reading value analysis in the comprehensive analysis step (S32), it is determined that a precise analysis is necessary. In the comprehensive analysis step (S32), the basic analysis that is determined to be a problem may include the results of each of the appropriate caliber analysis and the meter reading analysis, and a manual for performing the detailed analysis.

The communication unit 15 enables the nominal loss amount management device 10 to transmit and receive data by connecting devices such as a manager's terminal, a charge management system, and a smart water meter through a network. The input/output unit 16 may include an input device necessary for the manager to input data and a display or output device needed for displaying or providing data to the manager. The storage unit 17 may store a program code necessary for the nominal loss amount management device 10 to perform the nominal loss amount management method, a manual provided together when notifying a check item, an analysis result, and the like.

The data collection unit 11 may organize the data collected from the rate management system, the meter reading terminal, the smart water meter, and the like and record it in the customer information database 12 . The data collection unit 11 may rearrange the previously collected and stored customer information into a data format suitable for use in the nominal loss management method and record it in the customer information database 12 . The data collection unit 11 updates the customer information database 12 by organizing regularly collected information.

The analysis unit 13 and the notification providing unit 14 may be implemented in such a way that program codes for performing the above-described functions are written and executed in a processor. The analysis unit 13 and the notification providing unit 14 may each be executed in an independent device or processor, or may be executed in a single device or processor.

2 is a flowchart illustrating each step of a method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention.

As shown in FIG. 2, in the method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention, a plurality of basic analyzes are performed for each customer based on customer information, and at least one problem is solved. It may include a notification providing step (S40) of providing necessary check items according to the result of performing the basic analysis step (S30) and the basic analysis step (S30) for detecting the consumer. The basic analysis step (S30) may be performed based on the data stored in the customer information database (12). The multiple basic analyzes include analysis of over-test period (P1), analysis of unused usage (P2), analysis of appropriate diameter (P3), analysis of usage deviation (P4), analysis of acceptable range (P5), repeated analysis of usage (P6), and slope analysis ( P7), maximum guideline excess analysis (P8), total usage analysis (P9), and meter reading value analysis (P10) may be included. The basic analysis step (S30) may further include an article number confirmation (P0).

The method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention may further include, before the basic analysis step (S30), a basic data collection step (S10) and a data input step (S20). In the basic data collection step (S10), the data collection unit 11 automatically collects various numerical values from the smart water meter, the data input by the meter reader input through the computer system, and other data related to the water meter and usage. , and a process of receiving various data input by the administrator. The data input step (S20) is a process of organizing and storing the data collected in the basic data collection step (S10) in an appropriate form to store the data in the consumer information database 12 . The basic data collection step (S10) and the data input step (S20) may use a known method.

The basic analysis step (S30) is a process of determining whether there is an element that is likely to cause a nominal loss in the consumer. The basic analysis step (S30) may be performed for each customer. Basic analysis checks factors that may cause nominal loss in the process of reading the water meter installed at the customer and the value displayed on the water meter. The basic analysis step ( S30 ) may be performed by the analysis unit 13 of the nominal loss amount management device 10 . The basic analysis performed in the basic analysis step (S30) will be described below. In FIGS. 3 to 13 , the analysis results are shown as dotted rectangles, and actions are shown as double line rectangles.

0. Confirmation of article number (P0)

Since the equipment number is a serial number that identifies the water meter of the customer, it is information that must exist if a water meter is installed.

Figure 3 is a flowchart showing each step of the equipment number confirmation according to an embodiment of the present invention.

As shown in Figure 3, the item number check (P0) determines whether the item number exists in the item number of the customer information of the customer information database (12). If the article number does not exist (N), the analysis result can be treated as 'omission' and necessary measures can be treated as 'site investigation'. In the absence of a product number, it is necessary to conduct an investigation in reality, such as whether an actual water meter exists, what a product number is, and whether there is an actual customer. 'Site inspection' refers to the process of performing the process of checking the water meter (confirming the existence of the customer, whether the water meter exists, checking the equipment number, etc.) by visiting the customer where the water meter is installed. If the article number exists (Y), the analysis result can be treated as 'No abnormality'.

1. Analysis over the test period (P1)

The water meter installed in the consumer has a valid period of validation/re-inspection determined by law depending on the caliber. In the present specification, the validity period of the assay/retest will be referred to as the reference assay period. For example, for water meters with a diameter of more than 50 mm, the standard verification period is 6 years, and for other water meters (with a diameter of 50 mm or less), 8 years. It is necessary to check whether a water meter that exceeds the standard verification period operates normally, and if it does not operate normally, there is a possibility that a nominal loss may occur.

Inspection period overrun analysis (P1) is to calculate the period of use from the installation year to the present of the water meter installed in the consumer, and to determine whether the standard inspection period of the water meter, which is determined based on the caliber of the water meter, has been exceeded.

4 is a flowchart showing each step of the over-testing analysis according to an embodiment of the present invention.

As shown in FIG. 4 , in the over-testing analysis (P1), it is first determined whether the supply state is 'open' (P11). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. 'No analysis performed' means that the analysis is no longer performed on the customer. If the supply state is 'open' (Y), the next step is performed.

Next, the presence or absence of the article number determination (P12) is performed. The article number determination (P12) determines whether the article number exists in the article number of the consumer information of the consumer information database (12). Since the first two digits of the water meter are allocated according to the year the water meter was installed, if the water meter does not exist (N), the usage period of the water meter cannot be determined and the analysis result can be treated as 'analysis not performed'. . However, if the equipment number does not exist, it is necessary to conduct an investigation such as whether the actual water meter exists, what the equipment number is, and whether the actual customer exists. have. 'Site inspection' refers to the process of performing the process of checking the water meter (confirming the existence of the customer, whether the water meter exists, checking the equipment number, etc.) by visiting the customer where the water meter is installed. If the article number exists (Y), proceed with the next step.

Next, the water meter usage period is extracted (P13). The water meter usage period is the period from the year the water meter was installed to the present. The year the water meter was installed can be extracted from the first two digits of the article number. Then, a standard verification period for each diameter of the water meter is acquired (P14). The caliber of the water meter to be analyzed can be obtained from the consumer information stored in the consumer information database 12, and the standard according to the caliber of the water meter of the consumer in the pre-stored standard verification / re-calibration for each caliber of the water meter. Acquire a test period.

Next, it is determined whether the usage period of the water meter exceeds the standard test period (P15). If the usage period of the water meter does not exceed the standard test period (N), the analysis result is treated as 'no abnormality'. 'No abnormality' indicates that there is no problem as a result of the analysis. If the usage period of the water meter exceeds the standard inspection period (Y), the analysis result is treated as 'exceeded', and the necessary action can be processed as 'replacement'. If the usage period of the water meter exceeds the standard verification period, there is a possibility that the water meter may have problems such as aging or malfunction and not being able to accurately measure water consumption. is to judge In this case, the replacement cost of the water meter is generally cheaper than the cost of re-inspection to check the function of the water meter, and the necessary action can be 'replacement' because the water meter is replaced based on the validity period of the re-inspection for business convenience. 'Replacement' means replacing the water meter with a new product and installing it.

customer information P13 P14 Serial Number Customer number supply status Aperture (mm) article number water meter
period of use
(year) by caliber
Baseline test period
(year) Analysis action One 1010001600 open fire 75 08-000310 11 6 Excess substitute 2 1010000300 open fire 13 16-012826 3 8 nothing strange 3 1010000400 end of war 13 16-012445 3 8 no analysis 4 1010000600 open fire 20 12-001109 7 8 nothing strange 5 1010000800 open fire 13 8 no analysis inspection 6 1010000900 open fire 75 12-019693 7 6 Excess substitute 7 1010001000 open fire 40 05-000007 14 8 Excess substitute 8 1010001100 open fire 13 16-012835 3 8 nothing strange 9 1010001200 open fire 13 15-012890 4 8 nothing strange

With reference to Table 1, an example of over-test analysis will be described. In the case of serial number 1, since the supply state is open and the equipment number also exists, the process (P13, P14) of extracting the water meter usage period and the reference verification period is performed. Since the first two digits of the article number are 08, the water meter has been used for 11 years up to the present (2019), and since the diameter is 75mm, it exceeds 50mm, so the standard verification period is 6 years. As the water meter usage period exceeds the standard test period, the analysis result may be treated as 'exceeded' and the action may be treated as 'replace'. For serial number 3, the supply status is closed, so the analysis result is treated as 'analysis not performed', and for serial number 5, the supply status is 'open' but there is no equipment number, so the analysis result is treated as 'analysis not performed' and action is taken can be treated as a 'site investigation'.

2. Unused Analysis (P2)

When a person resides in a recipient, there is a minimum amount of water that is normally used in the course of life. The minimum water consumption may vary according to the determination criteria, but in this specification, it is assumed that the minimum water consumption of a single household is '5 tons' per month. In this case, it is normal for the monthly water consumption to be counted as '5 tons' or more, even for consumers living with only one person. If the monthly water consumption of consumers is less than '5 tons', it can be judged that there is a possibility of a nominal loss such as water usage not being measured normally.

The non-use analysis (P2) is to determine whether the water consumption of the consumers is 0 or lower than the minimum water consumption of single-person households for a set period from the latest.

5 is a flowchart illustrating each step of the unused analysis according to an embodiment of the present invention.

5, in the unused analysis (P2), it is first determined whether the supply state is 'open' (P21). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the amount of water used during the specified analysis period is extracted (P22). Water consumption can be extracted from the latest to the past for a set analysis period. For example, water consumption in the last 6 months can be extracted and analyzed. The analysis period is not set to 6 months, but can be adjusted to the number of months required.

Next, it is determined whether the amount of water used during the predetermined analysis period is 0 (P23). If the amount of water used is 0 (Y), the analysis result is treated as 'abnormal'. In addition, since it is necessary to investigate whether there is a reason for not using water or whether there is an error in the measurement of water consumption, the necessary measures can be treated as a 'site investigation'. If the water usage is non-zero (N), proceed to the next step.

Next, it is determined whether the amount of water used during the specified analysis period is less than the minimum water use of a single household (P24). If the water consumption of the consumer is less than the minimum water consumption of a single household (Y), the analysis result is treated as 'abnormal'. And if there is a person living in the house, it is normal to use more than the minimum water consumption of a single household.

If the water consumption during the specified analysis period is not 0 and is greater than the minimum water consumption of a single household (N), the analysis result is treated as 'no abnormality'. For example, the minimum water consumption for a single household can be analyzed by setting '5 tons'. The minimum water consumption for single-person households is not set at '5 tons', but can be adjusted.

The 'site inspection' is to check whether there is a reason for not using water and whether the water meter is operating normally by visiting the customer. There may be various reasons for whether the water consumption of the consumer is zero or the minimum water consumption of a one-person household is less. For example, there may be reasons such as using groundwater at the customer, vacating the customer due to a long-term overseas business trip or travel (empty space), or the business being suspended. These various causes should be identified by a person and appropriate measures should be taken.

Serial Number Customer number supply status waterworks
period of use
(year) last 6 months
Consumption (tons) last 6 months
Monthly usage
(ton) Analysis action One 1010002200 open fire 11 37 7 nothing strange 2 1010002300 end of war 0 0 0 no analysis 3 1010002700 open fire 3 25 5 5 tons or less field investigation 4 1010002900 open fire 8 111 26 nothing strange 5 101003200 open fire 3 0 0 unused field investigation 6 101003400 open fire One 44 8 nothing strange

In Table 2, in the case of serial number 1, since the supply state is 'open', the analysis is performed, the water consumption during the analysis period (the last 6 months) is extracted (P22), and the maximum monthly consumption for the last 6 months is 7 tons. Since it is recorded, water is being used, and since more water is being used than the minimum water consumption of a single household, the analysis result can be treated as 'No abnormality'. In the case of serial number 2, the supply status is 'discontinued', so the analysis result is treated as 'analysis not performed'. Since less water is being used, the analysis result can be treated as 'less than 5 tons' and necessary measures can be processed as 'site investigation'. In the case of serial number 5, the usage is recorded as 0, so the analysis result can be treated as 'unused' and necessary measures can be processed as 'site investigation'. In the case of serial number 6, the analysis result can be treated as 'no abnormality' through the same judgment process as that of serial number 1.

3. Titration Aperture Analysis (P3)

The water meter can accurately measure the water consumption when the water consumption is within a set range according to the caliber. If the water consumption of the customer is included within the range of the minimum and maximum consumption according to the diameter of the water meter, it can be expected that the water meter will accurately measure the water consumption, but if the water consumption of the customer is less than the minimum consumption of the water meter, If the consumer uses more water than the maximum water meter, the water meter may not accurately measure the water consumption.

Appropriate diameter analysis (P3) compares the water consumption of the consumer with the minimum and maximum use by diameter of the water meter installed in the consumer, and determines whether the diameter of the water meter is appropriate, excessive, or too small compared to the consumption of the consumer. is to judge

6 is a flowchart showing each step of the titration caliber analysis according to an embodiment of the present invention.

As shown in FIG. 6 , in the proper diameter analysis (P3), it is first determined whether the supply state is 'open' (P31). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, it is determined whether the average monthly water consumption of the consumers is '0' (P32). If the average monthly water consumption of consumers is '0' (Y), the analysis result is treated as 'analysis not performed'. This is because it is meaningless to judge the proper diameter without water consumption. If the average monthly water consumption of the consumer is not '0' (N), proceed with the next step.

Next, the average monthly water consumption of consumers is extracted (P33). The average monthly water consumption for one year can be calculated by averaging the monthly water consumption of consumers for one year from the present to the past. And, it acquires the minimum and maximum usage determined according to the diameter of the water meter installed in the consumer. The minimum usage and the maximum usage determined according to the diameter of the water meter are predetermined values and are values stored in advance in the storage unit 17 or the customer information database 12 . For example, the minimum usage of a 13mm diameter water meter used at home is 20m3/month, and the maximum usage is 550m3/month.

Next, the average monthly water use of the consumer and the minimum and maximum water consumption by diameter of the water meter are compared (P34). If the average monthly water consumption of the consumer is less than the minimum water consumption by diameter of the water meter (Y), the diameter of the water meter is larger than the water consumption of the consumer, so the analysis result can be treated as 'excessive'. If the average monthly water consumption of the consumer per year is greater than the minimum and less than the maximum for each diameter of the water meter (Y in P35), the water meter diameter is appropriate compared to the consumer’s water consumption, so the analysis result can be treated as ‘adequate’. have. If the average monthly water consumption of the consumer exceeds the maximum water consumption by diameter of the water meter (Y in P36), the diameter of the water meter is small compared to the water consumption of the consumer, so the analysis result can be judged as 'undersufficient'.

If the diameter of the water meter is judged to be 'excessive', there is a possibility that the water meter may not be able to measure the fine flow of water, so there is a possibility of a nominal loss. There is a possibility that the water meter will measure less running water, resulting in a nominal loss. Therefore, if it is judged to be 'excessive', it is necessary to undergo a detailed analysis and replace it with a water meter with a smaller diameter. have.

water meter caliber 13mm 20mm 25mm 32mm 40mm 50mm 75mm 100mm 150mm Minimum consumption (㎥/month) 20 80 125 200 325 500 1,250 2,000 4,500 Maximum consumption (㎥/month) 550 1,250 2,000 3,500 5,000 8,000 10,000 10,000 10,000

Serial Number Customer number supply status Aperture (mm) Monthly average for the last year
Water consumption (㎥/month) Analysis action One 1010007000 open fire 13 15 exaggeration precision analysis
substitute 2 1010000300 open fire 13 30 Adequate 3 1010000400 open fire 13 31 Adequate 4 1010000600 open fire 20 60 exaggeration precision analysis
substitute 5 1010000800 open fire 13 560 underestimate precision analysis
substitute 6 1010000900 open fire 13 8 exaggeration precision analysis
substitute 7 1010001000 open fire 40 540 Adequate

In the case of serial number 4 in Table 4, the diameter is 20mm, so when referring to Table 3, the minimum amount used is 80 (㎥/month). Therefore, the analysis result can be treated as 'excessive' and the action can be treated as 'replacement' after 'precise analysis'. If the water meter of serial number 4 is replaced with a diameter of 13mm, the average monthly water consumption of 60 (㎥/month) for the past year is included in the range (20-550㎥/month) of the minimum and maximum usage of the 13mm diameter, so there is no nominal loss of water. You will be able to measure your usage. In the case of serial number 5 in Table 4, the diameter is 13mm, so when referring to Table 3, the maximum consumption is 550 (㎥/month). Therefore, the analysis result can be treated as 'understood', and the action can be treated as 'replacement' after 'precision analysis'. If the water meter of serial number 5 is replaced with a diameter of 20mm, the average monthly water consumption of 560 (㎥/month) for the past year is included in the range (80~1,250㎥/month) of the minimum and maximum usage of the 20mm diameter, so there is no nominal loss of water. You will be able to measure your usage.

4. Usage deviation analysis (P4)

Consumer water usage generally does not fluctuate significantly unless the customer's building or industry changes. For example, unless there is a change such as a change from a residential building to a restaurant, etc., the water consumption for a long period of about 10 years does not deviate significantly from the average. And, although the usage may be irregular due to the consumer's own cause, the more the value deviates from the average usage, the more an administrator's meter reading error or a water meter malfunction may occur, so an inspection is required.

The usage deviation analysis (P4) is to determine whether the monthly usage of the consumer is out of the standard deviation range, based on the monthly usage from the time the water meter is installed in the consumer to the present.

7 is a flowchart showing each step of the usage deviation analysis according to an embodiment of the present invention.

7, in the usage deviation analysis (P4), it is first determined whether the supply state is 'open' (P41). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use the water supply. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P42). The analysis period can be the last 10 years. The analysis period can be changed, and when the water meter of the customer is replaced or the name is changed, the period from then to the present is determined as the analysis period.

Next, the monthly usage average (μ) and standard deviation (σ) are calculated using the monthly usage within the analysis period, and it is determined whether the monthly usage of the consumer deviates from the standard deviation range (μ±2σ) (P43) . If the monthly usage does not deviate from the standard deviation range (N), the analysis result is treated as 'no abnormality'. If the monthly usage increases rapidly, it is judged that the monthly usage exceeds the standard deviation range. It is judged (Y). If there is a month in which the monthly usage deviates from the standard deviation range, record the month (P44) and perform the next step.

Next, it is determined whether the number of months in which the monthly usage deviates from the reference deviation range is greater than the reference number (eg, 12) (P45). That is, it is determined whether the number of months in which the monthly usage deviates from the standard deviation range is 12 or more. If the number of months in which the monthly usage deviates from the standard deviation range is greater than the standard number, the analysis result can be treated as 'excessive deviation'. It can be treated as 'on hold'.

For consumers judged to be 'excessive deviation', necessary measures may be processed as 'precision analysis', and necessary measures may be processed as 'site investigations' according to the results of detailed analysis. 'Precise analysis' is a procedure in which the manager directly checks the consumer's usage trend to see if the cause of the month in which the monthly usage deviates from the standard deviation range is a temporary phenomenon. It is a procedure to determine the reason for the large deviation of . 'Judgment hold' indicates that the customer does not need to conduct 'fine analysis' or 'site investigation' immediately, but needs a potential inspection.

Serial Number Customer number supply status analysis period
(month) Deviation analysis number of times exceeded Analysis action Average mean+2σ mean-2σ One 1010008900 open fire 78 11 22.80 - 0.39 3 withhold judgment 2 1010000300 open fire 42 28 37.17 19.74 0 nothing strange 3 1010000400 open fire 44 29 40.18 17.11 7 withhold judgment 4 1010000800 open fire 42 30 41.80 17.48 0 nothing strange 5 1010000900 open fire 90 8 20.09 - 3.40 2 withhold judgment 6 1010005700 open fire 126 9 17.42 1.35 13 Excessive deviation precision analysis
(Field Survey)

In FIG. 7 , since the supply state of serial number 1 is 'open', when the analysis period is determined (P42), a usage deviation analysis can be performed on monthly usage for a total of 78 months. Find the average and deviation based on the monthly usage for 78 months, determine if there are months in which each monthly usage is outside the standard deviation range (μ±2σ) (P43), and determine if the monthly usage for a total of 3 months is outside the standard deviation range. analysis, and the analysis result can be treated as 'decision pending'. As a result of analyzing usage deviation for a total of 126 months of analysis for serial number 6, it was analyzed that the monthly usage for a total of 13 months was out of the standard deviation range. It can be processed by 'fine analysis'. If an on-site investigation is required as a result of the 'precision analysis', the necessary measures can be processed as a 'site investigation'.

5. Permissible range analysis (P5)

Tolerance analysis (P5) is performed to recognize the case where the consumer's usage fluctuates rapidly and take necessary measures. For example, if the water consumption may fluctuate due to the change of the customer's name, leakage occurs inside the customer's house, or when water is used without going through the water meter by connecting a bypass pipe to the water pipe ( Water)), there may be various cases such as a meter reading error of the meter reading source. If the reason for the sudden change in usage is not clear, it is necessary to identify the cause of the change through detailed analysis and on-site investigation.

In the allowable range analysis (P5), a confidence interval that can be judged as general usage is determined by excluding the prescribed number of high usage monthly usage from the monthly usage during the analysis period, and excluding the predetermined number of low usage monthly usage. , determines the allowable range extended by the magnification determined in the confidence interval, and then counts the number of monthly usage outside the allowable range to determine whether the number is larger than the standard. The number of months recording monthly usage exceeding the upper limit of the allowable range is counted, and the number of months of recording monthly usage that is less than the lower limit of the allowable range is counted.

8 is a flowchart showing each step of the allowable range analysis according to an embodiment of the present invention.

As shown in FIG. 8 , in the allowable range analysis, it is first determined whether the supply state is 'open' (P51). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P52). The analysis period can be the last 10 years. The analysis period can be changed, and when the water meter of the customer is replaced or the name is changed, the period from then to the present is determined as the analysis period.

Next, a confidence interval and an acceptable range are calculated (P53). List the monthly usage during the analysis period in descending order of value, and the number of months (eg, 10 out of 100 months) by a fixed ratio (eg 10%) from the number of months (eg 100 months) of the entire analysis period %, which is 10 months), may be excluded in the order of increasing value, and the largest value among the remaining monthly usage may be set as the upper limit meter reading value. And, the monthly usage value corresponding to the number of months (for example, 10 months, which is 10% of 100 months) as much as a predetermined ratio (for example, 10%) from the number of months (for example, 100 months) of the entire analysis period is Excluding in small order, the smallest value among the remaining monthly usage can be set as the lower limit meter reading value. The area between the upper and lower meter readings can be referred to as a confidence interval. And the confidence interval value can be obtained by subtracting the lower limit reading value from the upper limit reading value. Multiply the confidence interval value by the specified upper limit magnification (for example, a value between 0 and 1), add the upper limit reading value to determine the upper limit of the allowable range, and set the lower limit magnification (for example, a value between 0 and 1) for the confidence interval value. If the value obtained by subtracting the multiplied value from the lower limit reading value is greater than 0, the value is set as the lower limit of the allowable range. If it is less than 0, 0 is set as the lower limit of the allowable range. The upper limit magnification and the lower limit magnification may be the same or different values.

Next, the monthly usage and the upper and lower limits of the allowable range are compared (P54-1, P54-2). In the analysis period, each monthly usage is compared with the upper limit of the allowable range (P54-1), and if the monthly amount exceeds the upper limit of the allowable range, the number of months in excess is recorded (P55-1). In the analysis period, each monthly usage is compared with the lower limit of the allowable range (P54-2), and if the monthly amount is less than the lower limit of the allowable range, record the number of months that fall short of the lower limit (P55-2).

Next, the monthly usage and the upper limit of the allowable range are compared, and the number of months exceeded and the set number of times are compared (P56-1). If the number of months in excess of the monthly usage exceeds the upper limit of the allowable range is more than the set number of times (Y), the analysis result is treated as 'excess', necessary measures are treated as 'precision analysis', and an on-site investigation is required as a result of detailed analysis This can be done through an on-site investigation. Then, the monthly usage and the lower limit of the allowable range are compared to compare the number of months that are not met and the set number of times (P56-2). If the number of months for which the monthly usage falls below the lower limit of the allowable range is more than the set number of times (Y), the analysis result is treated as 'understood', the necessary action is treated as 'precision analysis', and an on-site investigation is required as a result of the detailed analysis. This can be done through an on-site investigation. If the number of months in excess or number of months is less than the set number of months (N), the analysis result can be treated as 'decision pending'. The set number of times is a value that the administrator can decide. For example, the predetermined number of times may be 6 times.

Serial Number Customer number supply status analysis period confidence range Allowable range Number of abnormal readings Analysis action upper limit reading lower limit reading upper limit lower limit number of months in excess number of months under One 1010001000 open fire 126 338 59 617 0 8 0 Excess precision analysis
(Field Survey) 2 1010000300 open fire 42 33 24 42 15 0 0 nothing strange 3 1010000400 open fire 42 39 24 54 9 0 2 withhold judgment 4 1010000600 open fire 102 0 0 0 0 0 0 nothing strange 5 1010000800 open fire 42 37 23 51 9 0 7 underachiever precision analysis
(Field Survey) 6 1010000900 open fire 90 15 0 30 0 0 0 nothing strange 7 1010001000 open fire 126 636 367 905 98 3 0 withhold judgment

In Table 6, serial number 1 can be analyzed because the supply state is 'open', and as a result of determining the analysis period (P52), the analysis period is 126 months, and the confidence range based on each monthly usage for 126 months As a result of calculating , and calculating the allowable range (P53), the upper and lower meter reading values of the confidence range, the upper and lower limits of the allowable range, and the lower limits were calculated as shown in Table 6. (P54-1, P54-2) As a result of recording the number of months exceeding or less than (P55-1, P55-2), it was analyzed that the number of months in excess was 8, which is more than the set number of months (6 times). Therefore, the analysis result can be treated as 'excess', necessary measures can be processed as 'fine analysis', and necessary measures can be processed as 'site investigation' according to the detailed analysis result. In the case of serial number 3, the number of months under It was analyzed twice, and the analysis result was treated as 'decision pending', and in the case of serial number 5, the number of months incomplete was analyzed 7 times, so the analysis result was treated as 'understood', and necessary measures could be processed as 'precision analysis', Depending on the results of detailed analysis, necessary measures can be processed as 'site investigations'.

As in the example of Table 6, if the analysis result is processed as 'exceed' or 'under' and 'precision analysis' is required, the manager analyzes the trend of the meter reading value during the analysis period to determine whether it is just a temporary phenomenon or the meter reading process can determine if there is a problem in Since the nominal loss is more likely to occur in the case of not exceeding the allowable range than the case of exceeding the allowable range, it is desirable to prioritize and precisely analyze the cause of the non-existence when both the number of months in excess and the number of months in deficit are higher than the prescribed number of times. As a result of the detailed analysis, if a cause analysis or action is required by investigating the site, the necessary action can be processed as a 'site investigation'.

6. Usage repetition analysis (P6)

Meter reading is the process of checking the values recorded on the water meter and entering the monthly usage into the rate management system. Due to various reasons, there are cases where the meter reading officer does not check the actual water meter, but arbitrarily conducts an accredited meter reading that records the monthly usage. If you analyze the monthly usage of the consumer, where the accreditation meter reading is performed, it is found that there are repeated values. Since this phenomenon is because the meter reads the monthly usage as a repeating value for the convenience of the meter reader, it can be analyzed that the meter reading agent is performing the accredited meter reading if there is a repeated value by examining the monthly usage of the consumer as a whole. In the case of accredited meter reading, a nominal loss occurs due to a difference between the actual consumer's water usage and the monthly usage input into the rate management system. Therefore, it is necessary to determine whether accreditation meter reading is performed.

The usage repetition analysis (P6) is to exclude the value measured as 0 among the monthly meter readings of consumers, and determine whether or not the remaining values match to determine whether various values exceeding a predetermined number do not appear.

9 is a flowchart showing each step of the usage repetition analysis according to an embodiment of the present invention.

As shown in FIG. 9 , in the repeated usage analysis (P6), it is first determined whether the supply state is 'open' (P61). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P62). The analysis period can be the last 10 years. The analysis period can be changed, and when the water meter of the customer is replaced or the name is changed, the period from then to the present is determined as the analysis period.

Next, the number of meter readings excluding duplicate values among the effective meter reading values and the reference number are compared (P63). The effective meter reading value is a non-zero value among consumers' monthly usage. Months with 0 monthly usage are excluded from the accreditation meter reading judgment because there is no usage. The number of meter readings is the number of valid meter reading values excluding duplicate values. Since it is common for the actual consumer's monthly usage to vary from month to month, the reason why there are duplicate values with the same monthly usage value is because the meter readers input the same monthly usage for convenience in the process of accredited meter reading. The standard number can be determined by the administrator, for example, it can be set to 10. This is because, unless accreditation meter reading is performed, at least 11 various monthly usage values will be recorded. In order to determine the standard number, it is necessary to consider the number of monthly usage values frequently used by the meter reading staff during accredited meter reading. This is because, although a meter reading officer may repeatedly input only one monthly usage amount during an authorized meter reading, there may be cases where three or four monthly usage amounts are repeatedly input sequentially.

If the number of valid meter readings, excluding duplicates, is less than the standard number, it is judged that accredited meter reading has been performed during the analysis period and the analysis result can be treated as 'authorized meter reading' The necessary measures can be processed as 'site investigations' according to the results of detailed analysis. If the number of readings, excluding duplicates, is greater than the standard number of valid readings, it is judged that the actual readings by the inspector have been performed, and the analysis result can be judged as 'no abnormality'.

Customers judged as 'authorized meter reading' need to conduct 'field investigation' after 'precise analysis'. 'Precise analysis' is a procedure in which the manager directly checks the consumer's usage trend and checks whether the repeated monthly usage values form a pattern to determine whether it is an accredited meter reading. This is a procedure to compare the figures of the meter with the monthly usage records or to check whether the meter reading staff has accredited the meter reading.

Serial Number Customer number supply status analysis period number of valid meter readings
(Except 0 value) Number of meter readings after excluding duplicate meter reading values Analysis action One 1010002200 open fire 90 42 40 nothing strange 2 1010000300 open fire 42 42 14 nothing strange 3 1010000400 open fire 42 42 18 nothing strange 4 1010000600 open fire 102 14 5 accreditation meter reading precision analysis
(Field Survey) 5 1010000800 open fire 42 42 19 nothing strange 6 1010000900 open fire 90 73 20 nothing strange 7 1010001000 open fire 126 126 106 nothing strange 8 1010001100 open fire 42 42 20 nothing strange 9 1010001200 open fire 42 39 9 accreditation meter reading precision analysis
(Field Survey)

In Table 7, serial number 4 can be analyzed because the supply state is 'open', and when the analysis period is determined (P62), the analysis period is determined to be 102 months, and the usage is repeated for the monthly usage for 102 months analysis can be performed. In the analysis period, if a non-zero effective meter reading value is obtained from each monthly usage and the number is checked, there are 14 effective meter reading values identified in the number of effective meter reading values in Table 7, among which the overlapping monthly usage amount is duplicated. If the meter reading values are excluded, only the 5 effective meter reading values identified in the number of meter readings remain after excluding the duplicate meter reading values in Table 7. That is, when the overlapping monthly usage is removed from among the 14 valid meter reading values, only 5 effective meter reading values remain, and since the 9 effective meter reading values overlap each other, it can be determined that the meter reader is performing the authorized meter reading. Therefore, the analysis result can be processed as 'authorized meter reading', and the necessary measures can be processed as 'field investigation' after 'fine analysis'. There are 42 effective meter reading values, and after excluding duplicate meter reading values, the number of effective meter reading values is 19, leaving various different valid meter reading values. In other words, since it can be determined that the meter reading is not performing the accredited meter reading, the analysis result can be treated as 'no abnormality'.

7. Slope Analysis (P7)

When the water meter is aging, there is a problem that the water consumption cannot be accurately measured due to the cause such as the rotation of the flow meter being poor. As the aging of the water meter causes the measured value to appear small compared to the water consumption, it can be seen that the water meter is aging through the gradual decrease in monthly usage.

The slope analysis (P7) is to analyze the trend of the consumer's monthly usage as a slope, and to determine whether or not it indicates a downward trend below a predetermined reference slope.

10 is a flowchart showing each step of the slope analysis according to an embodiment of the present invention.

10, in the slope analysis (P7), it is first determined whether the supply state is 'open' (P71). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P72). The analysis period can be the last 10 years. The analysis period can be changed, and when the water meter of the customer is replaced or the name is changed, the period from then to the present is determined as the analysis period.

Next, the trend of the monthly usage is extracted to calculate the slope of the trend, and it is determined whether the trend is downward below the reference slope (P73). Trendlines for monthly usage can be obtained in a variety of known ways. The reference slope may be determined by an administrator, for example, may be determined as -1.0. If the slope of the trend of monthly usage drops more rapidly than -1.0 (Y), the water meter is aging and measuring less water usage. , necessary measures can be processed as 'precision analysis', and necessary measures can be processed as 'site investigations' according to the results of detailed analysis. If the slope of the monthly usage trend line is greater than the reference slope (N), the analysis result can be treated as 'no abnormality'. In determining the slope of the trend of monthly usage, instead of setting only one reference slope, various analysis results may be output for each slope range by setting the reference ranges having various sections.

Consumers judged to be 'overgraded' can perform 'precision analysis' to determine if the manager checks the monthly usage trend to determine if it is a temporary trend, and 'site survey' to determine if the water meter is outdated and perform replacement.

Serial Number Customer number supply status caliber analysis period inclination Analysis action One 1010001700 open fire 13 30 -0.10 2 101001800 open fire 13 42 -0.20 3 1010001900 open fire 13 30 0.24 4 1010002000 open fire 13 42 -0.09 5 1010002100 open fire 25 42 -5.70 inclination
exaggeration precision analysis
(Field Survey) 6 1010002200 open fire 13 90 0.03

In Table 8, for serial number 5, analysis can be performed because the supply state is 'open', and when the analysis period is determined (P82), the analysis period is determined to be 42 months, and a trend line is generated with the monthly usage during that time, and the When judging the slope, it appears as -5.7 as confirmed by the slope in Table 8, and in this case, the slope is lowered more rapidly than the reference slope (-1.0). It can be processed by 'fine analysis'. As a result of the detailed analysis, if it is determined that the water meter needs to be replaced or other on-site investigation or action is required, the necessary action can be treated as a 'site investigation'.

8. Analysis of exceeding the maximum guidelines (P8)

Water meters have a maximum guideline for each caliber. For example, the maximum reading for a water meter with a diameter of 13 mm is 9,999 m3. If the maximum guideline is exceeded, the guideline will start over from 000m3. Total usage can be calculated by adding the monthly usage for the period from when the water meter is installed in the consumer to the point of analysis. If the total usage of the water meter exceeds the maximum guideline value, the water meter has performed a sufficient number of measurement operations, so even if the validity period of the water meter's calibration/recalibration has not elapsed, there is a possibility that the water meter may have aged or malfunctioned. .

The maximum guideline overage analysis (P8) compares the total usage by adding the monthly usage for the period from the time the water meter is installed in the consumer to the point of analysis with the maximum guideline value determined by the diameter of the water meter, and the total usage is the maximum guideline value. to determine whether or not the

11 is a flowchart showing each step of the maximum guideline excess analysis according to an embodiment of the present invention.

11, in the maximum guideline excess analysis (P8), it is first determined whether the supply state is 'open' (P81). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P82). The analysis period can be from the time the water meter is installed or replaced to the time of analysis.

Next, the total usage is calculated by adding the monthly usage for the period from the time the water meter is installed in the consumer to the point of analysis, and the maximum guide value for each diameter of the water meter installed in the consumer is extracted (P83). In this case, the analysis period is the period from the time the water meter is installed to the time of analysis. The point of analysis is usually the present. The maximum guide value for each caliber of the water meter is a predetermined value, and may be stored in advance in the customer information database 12 or the storage unit 17 .

Next, it is determined whether the total usage exceeds the maximum guide value (P84). If the total usage does not exceed the maximum guideline value, it is judged as 'No abnormality'. If the total usage exceeds the maximum guideline value, the analysis result is judged as 'excess', and necessary measures can be processed as 'replacement' after 'site inspection'. Water meters judged to be 'excessive' are likely to be outdated or broken because they operate sufficiently.

division 13mm 20mm 25mm 32mm 40mm 50mm 75mm 100mm 150mm maximum guidelines 9,999 99,999 99,999 99,999 99,999 999,999 9,999,999 9,999,999 9,999,999

Serial Number Customer number supply status caliber
(mm) analysis period Total consumption (㎥) Analysis action One 1010000300 open fire 13 42 4,266 nothing strange 2 1010000400 open fire 13 42 1,178 nothing strange 3 1010000600 open fire 20 102 57,021 nothing strange 4 1010000800 open fire 13 88 10,442 Excess field investigation
substitute 5 1010000900 open fire 13 90 8,110 nothing strange 6 1010001000 open fire 40 126 110,533 Excess field investigation
substitute 7 1010001100 open fire 13 20 1,059 nothing strange 8 1010001200 open fire 13 18 2,903 nothing strange

Referring to Tables 9 and 10, in the case of serial number 4, analysis can be performed because the supply state is 'open', and when the analysis period is determined (P81), the analysis period is determined to be 88 months, and monthly usage during the analysis period If you calculate the total consumption by adding all of them, it is confirmed to be 10,442㎥ as shown in Table 10, and if you find the maximum guideline for a water meter with a diameter of 13mm in Table 9, it is 9,999, which means that it exceeds the maximum guideline. Therefore, the analysis result can be treated as 'excess' and necessary measures can be processed as 'replacement' after 'site inspection'. In the case of serial number 6, referring to Table 9, the maximum guideline for each diameter (40mm) is 99,999, but the total usage over 126 months is 110,533, so the analysis result is treated as 'excess' and the necessary measures are 'replaced' after 'site investigation'. can be processed As the total usage of the water meter has exceeded the maximum guidelines for each caliber as the period of using the water meter has elapsed, the function of the water meter may have deteriorated.

9. Total usage analysis (P9)

The water meter continues to accumulate water consumption by consumers from the time it is installed to the present and displays it as a guideline. It is normal that the total usage plus the monthly usage for the period from the time the water meter is installed in the consumer to the point of analysis and the guide value of the water meter are the same, and there may be some errors due to minor errors in the meter reading process. However, there is a case where there is a large discrepancy between the guideline value of the water meter and the total usage by consumers. Such discrepancy may be caused by arbitrarily adjusting the water meter's guidelines without permission, or by the meter reading personnel performing an accredited meter reading and the water meter guideline value and the monthly usage input value are inconsistent, or in the process of meter reading or numerical input. It can be caused by errors. In this case, there may be a discrepancy between the consumer's water usage and the guideline value, so an inspection is required.

Total usage analysis (P9) is to determine whether there is a difference between the total usage, which is the sum of the consumer's monthly usage during the specified analysis period, and the current guide value of the water meter, and if there is a difference, it is determined whether the difference is greater than the standard. . In this case, the analysis period may be a period from the time the water meter is installed in the consumer to the point of analysis.

12 is a flowchart showing each step of the maximum guideline excess analysis according to an embodiment of the present invention.

12, in the total usage analysis (P9), it is first determined whether the supply state is 'open' (P91). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P92). The analysis period is the period from the time the water meter is installed or replaced to the time of analysis.

Next, the total usage is calculated by adding all the monthly usage of the consumer during the specified analysis period, and the guide value at the time of the last meter reading of the water meter stored in the customer information database 12 is extracted (P93).

Next, compare the total usage of the consumer with the double the water meter's guide value (P94). If the total consumption of the consumer is less than twice the guide value of the water meter (N), it can be judged as 'no abnormality' because there is a possibility that minor errors in meter reading may be accumulated. When the total usage of the consumer is greater than twice the guide value of the water meter (Y), the difference between the total usage and the guide value of the water meter is significantly large, so it can be judged as 'excessive'.

If it is judged as 'excessive', it is necessary to conduct a 'site survey', compare the guideline value recorded in the rate management system with the actual guideline value of the water meter, and take necessary measures such as sealing the water meter.

Serial Number Customer number supply status caliber analysis period Consumption (㎥) Analysis action total usage final guidelines One 1010007100 open fire 13 25 257 239 nothing strange 2 1010007200 open fire 13 41 447 401 nothing strange 3 1010007300 open fire 13 36 337 339 nothing strange 4 1010007400 open fire 13 33 345 299 nothing strange 5 1010007500 open fire 13 113 1,711 218 exaggeration field investigation 6 1010007600 open fire 13 67 849 821 nothing strange 7 1010007700 open fire 13 75 960 838 nothing strange

Referring to Table 11, analysis can be performed for serial number 5 because the supply state is 'open', and when the analysis period is determined (P92), the analysis period is determined to be 113 months, and the monthly usage for 113 months is added up. The total amount used is 1,711㎥, and the final guideline is recorded as 218㎥. In the general case of serial number 4, the total consumption is 345㎥ and the final guideline is 299㎥, so there is no big difference, but serial number 5 has more total usage than twice the final guideline. Therefore, the analysis result of serial number 5 can be treated as 'excessive', and necessary measures can be treated as 'site investigation'. During the on-site investigation of serial number 5, it is necessary to check whether the accredited meter reading was made, whether it was caused by a simple input error, whether the water meter guideline was tampered with, or whether the meter reading was wrong.

10. Meter reading value analysis (P10)

When charging a water service fee, there are cases where the monthly usage for charging the fee and the meter reading value of the water meter are separately input. The monthly usage is calculated by subtracting the delivered meter reading value from the monthly meter reading value of the water meter. There is a possibility that there may be a difference in the used monthly usage. In this case, it is necessary to check because the monthly usage actually input for billing is arbitrarily written or the meter reading value of the water meter is arbitrarily input.

The meter reading value analysis (P10) is to determine whether the number of months in which the difference exists by determining the difference between the consumer's usage and the meter reading amount on a monthly basis is greater than or equal to a predetermined reference number of months.

13 is a flowchart showing each step of the meter reading value analysis according to an embodiment of the present invention.

As shown in FIG. 13 , in the meter reading value analysis (P10), it is first determined whether the supply state is 'open' (P101). If the supply status is not 'open' (N), the analysis result can be treated as 'analysis not performed' because the customer does not use tap water. If the supply state is 'open' (Y), the next step is performed.

Next, the analysis period is determined (P102). The analysis period can be the last one year. The analysis period can be changed, and when the water meter of the customer is replaced or the name is changed, the period from then to the present is determined as the analysis period.

Next, based on the monthly water meter reading values of the last year, the water meter meter reading value utilization usage amount is calculated (P103). The usage of water meter readings can be calculated by subtracting the previous month's readings from the current month's readings.

Next, it is determined whether the usage of the water meter reading value and the monthly usage, which is the standard for charging water rates, match (P104). If they match, the analysis result can be treated as 'No abnormality'. In case of discrepancy, the amount of difference is accumulated and recorded in the amount of difference, the number of months in which the difference occurred is recorded in the number of differences (P105), the analysis result is treated as a 'difference', and the necessary action is set to 'fine analysis'. Depending on the results of detailed analysis, necessary measures can be processed as 'site investigations'.

If it is judged as a 'difference', it is necessary to perform a 'precision analysis'. The 'precision analysis' is for the manager to review the consumer's monthly usage and the trend of the water meter guide value to determine whether it is a temporary error. A difference of about one time can be caused by insufficient information input when replacing a water meter, but a difference of two or more times may be an input error or an authorized meter reading, so 'site investigation' needs to be carried out. It is possible to change the number of times the 'difference' can be recognized as temporary and the field investigation can be omitted.

Serial Number Customer number supply status analysis period Matches monthly usage Analysis action difference number of differences One 1010000300 open fire last year 0 0 nothing strange 2 1010000400 open fire last year 0 0 nothing strange 3 1010000600 open fire last year 127 One difference precision analysis
(Field Survey) 4 1010000800 open fire last year 0 0 nothing strange 5 1010000900 open fire last year 0 0 nothing strange 6 1010001000 open fire last year 100,731 12 difference precision analysis
(Field Survey)

Referring to Table 12, for serial number 3, analysis can be performed because the supply state is 'open', and when the analysis period is determined (P102), the analysis period is determined to be the most recent one year, and each month during the analysis period is monthly. As a result of comparing the value recorded as usage and the value obtained by subtracting the meter reading value for the previous month from the meter reading value for the current month, it was confirmed that there was one difference and a difference of 127㎥ occurred. It can be processed as 'precision analysis', and actions can be processed as 'site investigation' according to the results of detailed analysis. Since there has been only one difference in the last year of the analysis period, the on-site investigation may not be performed. For serial number 6, the number of differences is 12 and the accumulated value of the difference is 100,731 ㎥. It can be seen that there is a problem in the input process of the meter reading value, and the analysis result can be treated as a 'difference', the action as a 'fine analysis', and the action as a 'site investigation' according to the detailed analysis result. have.

By performing these basic analyzes, the analysis results of each analysis can be obtained. Next, according to the result of performing the basic analysis step (S30), a notification providing step (S40) of providing necessary check items may be performed.

The notification providing step (S40) is to inform the manager that actions such as detailed analysis, on-site investigation, replacement, etc. determined as a necessary action as a result of the analysis are to be performed. In the notification providing step ( S40 ), the nominal loss amount management device 10 may provide a notification to the manager through the input/output unit 16 or provide a notification to the manager's terminal through the communication unit 15 .

In the method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention, after the above-described basic analysis step (S30), the results of each of the analyzes obtained as a result of performing the basic analysis step (S30) It may further include a comprehensive analysis step (S32) of determining the necessary inspection items by comprehensively analyzing.

In the comprehensive analysis step (S32), as a result of performing appropriate diameter analysis, usage deviation analysis, allowable range analysis, usage repetition analysis, slope analysis, and meter reading value analysis, if it is determined that there is a problem in any one analysis, the detailed analysis is performed In the detailed analysis judgment step (S33), which is judged to be necessary, the equipment number of the water meter installed in the customer does not exist, or as a result of performing unused analysis, maximum guideline excess analysis, and total usage analysis, any analysis is deemed to have a problem. When it is determined, a field investigation determination step (S34) of determining that an on-site investigation is necessary, and a replacement determination step (S35) of determining that the replacement of the water meter is necessary when it is determined that there is a problem as a result of performing the analysis over the inspection period can do. The notification providing step (S40) performed after performing the comprehensive analysis step (S32) may inform the manager of what is the mood analysis determined to have a problem and necessary matters to review the corresponding basic analysis result.

In the precise analysis determination step (S33), if it is determined that there is a problem among the basic analyzes, rather than directly performing on-site measures, the analysis is performed for the analysis in which the manager needs to directly check the consumption data of the consumer. If it is determined that there is a problem in the analysis results for appropriate bore analysis, usage deviation analysis, tolerance range analysis, usage repetition analysis, slope analysis, and meter reading analysis, a detailed analysis is performed to temporarily It is necessary to first determine whether there is a problem determined by the cause. As a result of performing the precise analysis judgment step (S33), if there is a problem in any one of appropriate diameter analysis, usage deviation analysis, allowable range analysis, usage repetition analysis, slope analysis, and meter reading value analysis (Y), there is a problem in which analysis It is possible to perform a notification that provides the manager with the results of each step of the analysis process performed until it is determined whether there is an analysis result and the analysis result. And as a result of performing the precise analysis and judgment step (S33), if there is no problem in any of the appropriate diameter analysis, usage deviation analysis, tolerance analysis, repeated usage analysis, slope analysis, and meter reading value analysis (N), Ends appropriate bore analysis, usage deviation analysis, allowable range analysis, usage repetition analysis, slope analysis, and meter reading value analysis.

Based on the information included in the notification, the manager determines that a detailed analysis is necessary and is notified about the appropriateness of the appropriate caliber analysis, usage deviation analysis, tolerance range analysis, usage repetition analysis, slope analysis, and meter reading analysis. It is possible to determine whether an on-site investigation is necessary by performing a detailed analysis and determining whether the problem still exists as a result of the detailed analysis. If it is judged that an on-site inspection is necessary (Y), an on-site inspection is carried out. If it is determined that the on-site investigation is not necessary (N), the analysis of the customer is terminated.

In the field investigation judgment step (S34), if it is determined that there is a problem in any one analysis among unused analysis, maximum guideline excess analysis, and total usage analysis (Y), which analysis is determined to have a problem, analysis results and analysis It is possible to perform a notification that provides the results of each step of the analysis process performed until the results are obtained to the manager. And as a result of performing the on-site investigation judgment step (S34), if there is no problem in any of the unused analysis, the maximum guideline excess analysis, and the total usage analysis (N), the unused analysis of the consumer, the maximum guideline excess analysis, and the total usage analysis to quit

As a result of performing the on-site investigation judgment step (S34), the manager performs the on-site investigation when it is determined that an on-site investigation is necessary (Y) and when it is determined that an on-site investigation is necessary because there is a problem as a result of the detailed analysis (Y). If a problem occurs as a result of the on-site investigation, appropriate measures and improvements are made to the problem. Measures and improvements include various measures such as replacement of water meters, sealing of water meters, and removal of bypass paths.

In the replacement determination step (S35), when it is determined that replacement is necessary as a result of performing the analysis over the inspection period (Y), a notification is performed to provide information necessary for replacement of the water meter to the manager, and when replacement is not required (N) End the over-testing analysis for the customer concerned. When the manager is provided with the information required to replace the water meter as a notification, he or she can perform measures to replace the water meter and improve it.

The basic analysis step (S30) or the comprehensive analysis step (S32) of the nominal loss management method may be performed for each consumer. The execution cycle of the nominal loss management method may be performed once every predetermined period, for example, once every quarter. Alternatively, the execution cycle of the nominal loss management method is individually judged for each customer, and when there is a change in the customer, such as a change in the customer after the closing or a change in the user name, there is an abnormality by performing the nominal loss management method. can determine whether

15 is a flowchart illustrating each step of a method for managing a nominal loss through water meter and usage analysis further including another analysis step (S39) according to an embodiment of the present invention.

As shown in FIG. 15 , the method for managing a nominal loss through water meter and usage analysis according to an embodiment of the present invention may further include another analysis step (S39). Other analysis may include securing customer location information (G1), analysis of usage patterns for large numbers of customers (G2), analysis of meter reading methods and usage (G3), analysis of main meter of apartment buildings (G4), and analysis of usage of public buildings (G5). can

Securing customer location information (G1) is a process of confirming the exact location of the customer. In the audience information of the audience information database 12, an address item exists for each audience. If the address of the customer where the water meter is installed is unknown, or if the location is not confirmed even if the address exists, it is necessary to confirm the exact location of the customer in order to understand the current status of the customer and to carry out on-site measures that may occur in the future.

First, it is checked whether the customer's address is not listed. If the customer's address is not listed, the necessary action can be treated as a 'site investigation'.

Next, if the customer's address is written, it is necessary to check whether the customer's address exists on the electronic map. This is because, even if the address exists, there may be an input error or the correct address may not be input due to a change in the address system. For electronic maps, commercial navigation or services that provide map information can be used. If the location is confirmed by entering the address of the customer existing in the customer information on the electronic map, the analysis result can be treated as 'no abnormality'. If the location is not confirmed when inputting the address of the consumer that exists in the consumer information on the electronic map, the analysis result can be treated as 'location unknown' and necessary measures can be processed as 'site investigation'. When conducting an on-site inspection, you can check the address of the customer based on the address or contact information of the person paying the fee, check the address using administrative services, or visit the site.

Large consumer consumption pattern analysis (G2) is to analyze the consumption pattern of consumers who use a very large amount of water in excess of a set amount each month. For example, if you use more than 500 tons of water per month, you can classify it as a water consumption price. The standard of monthly usage that is classified as a large number of users can be changed as needed. Large water consumers use a lot of water and have a characteristic of fluctuating water usage patterns, which may affect the flow rate or water pressure of the water supply network. Therefore, it is possible to analyze the usage patterns of large water consumers and reflect them in the management of the water supply network. In order to analyze the large consumer price usage pattern, the analysis unit 13 may organize the usage records of a predetermined number of consumers in the order of the highest monthly usage and provide them to the manager.

MDU meter reading method and usage analysis (G3) is to determine whether a nominal loss occurs by determining the installation status of the water meter in the apartment building and analyzing the total usage.

Since there are multiple separate households in one building, the aggregate usage may vary depending on the location where the water meter is installed. There may be a main water meter measuring the water supplied to the entire apartment complex, there may be an individual water meter measuring the water supplied to each household in the apartment building, or both the main water meter and individual water meters may exist. have.

First, check whether it is an apartment building or not. In the case of an apartment house, check whether the main water meter or individual water meter is installed. If there is no main water meter and only individual water meters exist, it is necessary to install a main water meter.

In addition, when the number of households in an apartment house is large, it is common that water consumption also increases proportionally. The analysis unit 13 provides information in the order of the smallest total water consumption by household of the apartment house, and if the total water consumption is small despite the large number of households, a 'close-up investigation' is required, and according to the results of the detailed investigation, A 'site survey' can be carried out.

The main meter analysis (G4) of the apartment house is to check whether the usage of the main water meter and the individual water meter of the apartment house match.

If both the main water meter and individual water meters are installed, compare the monthly usage to see if they match. If the total monthly usage of individual water meters coincides with the monthly usage of the main water meter, there is no problem.

Public building usage analysis (G5) is to determine whether the measurement of water usage is normally performed in the building in which the public institution resides. Public institutions include county offices, eup offices, myeon offices, and various public centers. There are cases in which water consumption is counted lower in buildings where public institutions are located compared to other industries. The analysis unit 13 determines whether the category of consumer information is included in public institutions, lists them in descending order based on usage, and conducts a 'field survey' to see if water consumption is normally counted from consumers with low water use. You can provide information to

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and by those of ordinary skill in the art within the technical spirit of the present invention It will be clear that the transformation or improvement is possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

10: Nominal loss amount management device
11: data collection unit
12: Consumer Information Database
13: analysis unit
14: Notification provider
15: communication department
16: input/output unit
17: storage

Claims (14)

delete delete delete delete delete delete delete a customer information database for storing customer information related to the customer;
an analysis unit for performing a plurality of basic analyzes based on the customer information; and
On the basis of the information received from the analysis unit, as a method performed in a nominal loss amount management device comprising a notification unit for providing inspection items to the manager,
a basic analysis step of performing, in the analysis unit, the plurality of basic analyzes for each customer based on customer information to detect at least one problematic customer;
In the notification unit, including a notification providing step of providing necessary check items according to the result of performing the basic analysis step,
The plurality of basic analyzes
It includes at least one of analysis period overrun analysis, non-use analysis, appropriate diameter analysis, usage deviation analysis, allowable range analysis, slope analysis, maximum guideline excess analysis, total usage analysis, and meter reading value analysis while including repeated usage analysis,
The usage repetition analysis is
Obtain an effective meter reading value that is a non-zero value from the monthly usage of consumers during the specified analysis period, and obtain the number of meter readings, which is the number of valid meter reading values remaining after excluding duplicate values from among the effective meter reading values, and By comparing the standard number, if the number of meter readings is smaller than the standard number, it is judged that various values greater than the standard number do not appear, so that the accredited meter reading is performed.
The monthly usage is a value stored in the customer price information input by the meter reader into the rate management system,
The accredited meter reading is a method for managing a nominal loss through water meter and usage analysis, in which the meter reading agent arbitrarily records the monthly usage without checking the water meter. delete delete a customer information database for storing customer information related to the customer;
an analysis unit for performing a plurality of basic analyzes based on the customer information; and
On the basis of the information received from the analysis unit, as a method performed in a nominal loss amount management device comprising a notification unit for providing inspection items to the manager,
a basic analysis step of performing, in the analysis unit, the plurality of basic analyzes for each customer based on customer information to detect at least one problematic customer;
In the notification unit, including a notification providing step of providing necessary check items according to the result of performing the basic analysis step,
The plurality of basic analyzes
While including total usage analysis, it includes at least one of analysis over the test period, non-use analysis, appropriate diameter analysis, usage deviation analysis, tolerance analysis, usage repetition analysis, slope analysis, maximum guideline excess analysis, and meter reading value analysis,
The total usage analysis is
It is determined whether there is a difference between the total usage by adding the monthly usage for the period from when the water meter is installed in the consumer to the time of analysis and the guide value of the water meter at the time of analysis stored in the customer information database, and if there is a difference, the determine whether the difference is greater than the criterion,
The monthly usage is a value stored in the customer price information input by the meter reader into the rate management system,
The guide value at the time of analysis is displayed on the water meter, and the water consumption of consumers is continuously accumulated from the time the water meter is installed,
The difference between the total usage amount and the water meter's guideline value is caused by arbitrary adjustment of the water meter's guideline, accreditation meter reading, or input error,
The accredited meter reading is a method for managing a nominal loss through water meter and usage analysis, in which the meter reading agent arbitrarily records the monthly usage without checking the water meter. a customer information database for storing customer information related to the customer;
an analysis unit for performing a plurality of basic analyzes based on the customer information; and
On the basis of the information received from the analysis unit, as a method performed in a nominal loss amount management device comprising a notification unit for providing inspection items to the manager,
a basic analysis step of performing, in the analysis unit, the plurality of basic analyzes for each customer based on customer information to detect at least one problematic customer;
In the notification unit, including a notification providing step of providing necessary check items according to the result of performing the basic analysis step,
The plurality of basic analyzes
Including the analysis of the meter reading value, including at least one of analysis period overrun analysis, unused analysis, appropriate diameter analysis, usage deviation analysis, tolerance analysis, usage repetition analysis, slope analysis, maximum guideline excess analysis, and total usage analysis,
The meter reading value analysis is
It is to determine whether the number of months in which the difference exists by determining the difference between the consumer's monthly usage and the usage of the meter reading value on a monthly basis is greater than or equal to the set standard number of months,
The monthly usage is a value stored in the customer price information input by the meter reader into the rate management system,
The usage of the meter reading value is calculated by subtracting the previous month meter reading value from the current month meter reading value,
The difference between the monthly usage and the usage of meter reading values is caused by arbitrary adjustment of the water meter guidelines, accredited meter reading, or input errors,
The accredited meter reading is a method for managing a nominal loss through water meter and usage analysis, in which the meter reading agent arbitrarily records the monthly usage without checking the water meter. 13. The method of any one of claims 8, 11, and 12,
after the basic analysis step, a comprehensive analysis step of comprehensively analyzing the results of each of the plurality of basic analyzes obtained as a result of performing the basic analysis step to determine necessary inspection items;
The comprehensive analysis step is
As a result of performing appropriate diameter analysis, usage deviation analysis, allowable range analysis, usage repetition analysis, slope analysis, and meter reading analysis on the consumer, if it is determined that there is a problem in any one analysis, precise analysis to determine that a precise analysis is necessary judgment stage;
On-site investigation to determine that an on-site investigation is necessary if there is no equipment number of the water meter installed in the consumer, or if it is determined that there is a problem in any one analysis as a result of analysis of unused, exceeding the maximum guidelines, and analysis of total usage judgment stage; and
A method for managing nominal loss through water meter and usage analysis, comprising a replacement determination step of determining that replacement of the water meter is necessary when it is determined that there is a problem as a result of performing the analysis over the verification period. 14. The method of claim 13,
The above checks are
the results of each of the basic analyzes determined to have a problem in the comprehensive analysis step; and
Nominal loss management method through water meter and usage analysis, including a manual for performing the detailed analysis, field survey, or replacement.

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