KR20150114701A - Method of providing complex and intelligent services for auto-meter reading of used gas amount with error correction and gas-related safety monitoring and alarming - Google Patents

Abstract

Provided is a method for providing a complex and intelligent service for controlling error correction and remote metering of city gas and life safety and a system thereof. A remote meter terminal installed in a gas meter measures gas related basic information (gas usage amount per time, gas temperature and living environment temperature, gas pressure information). The method judged occurrence of a temperature related living situation, by comparing the gas temperature or the living environment temperature with a threshold temperature value according to a temperature related living situation where high temperature or low temperature (cold-weather injury) damage, fire and freezing damage may occur. The method judges occurrence of a living situation related with gas usage amount, by comparing the gas usage amount per time with a threshold flux value established according to a living abnormality situation, a gas device inspection situation, and a gas leakage situation. Each remote metering terminal transmits information about the living situation occurred through the judgment to a controlling computing apparatus. The information is received in the controlling computing apparatus, and then information about the occurred living situation is transmitted to a communication terminal of a person related with the occurred living situation.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a method and system for providing an intelligent service,

The present invention relates to a method and system for providing a complex service relating to the use of city gas, and more particularly, to a method and system for providing a complex service related to the use of city gas, And a system for providing a new type of comprehensive service that controls the user's life safety by generating new additional information by utilizing basic information on the usage amount, temperature, pressure, etc. of the city gas.

(1) Automatic remote meter reading of city gas consumption - Correction of volume and calorie error

A technology for automatically checking the city gas consumption by attaching an automatic meter reader to the city gas meter has been developed and used. A technology has been proposed that can perform error correction of the amount of usage while performing automatic remote meter reading of the gas usage amount. The use error of the city gas is the temperature and pressure reference value of the gas applied by the city gas supplier at the gas supply reference point (local preliminary period) (this is referred to as reference temperature and reference pressure, usually 0 ° C and 1 atm are applied) (Density) change (hereinafter referred to as " pressure error ") caused by a difference between the actual temperature and the pressure of the gas in the user's gas meter. In the case of a capacity meter in which the gas consumption is measured in units of volume, a method and system for imposing a gas charge on the basis of the remote meter reading of the gas consumption corrected for the pressure error by attaching the pressure error correction device to the meter are disclosed (Patent Publication No. 10-2005-0015110).

However, the error does not have only the pressure error of this volume. In order to more accurately correct the error, it is desirable to correct the variation of the calorific value of the gas in addition to the correction of the volume error of the gas. City gas is a gasification of LNG (Liquefied Natural Gas), a natural fossil fuel collected from nature. LNG is a city gas of the same standard volume because the composition of natural gas (main component: methane) And the unit calorie is different. In Korea, to prevent fluctuation of gas quality and price dispute due to such fluctuation of heat quantity, the government prescribed minimum calorific value so that the supplier could observe this. In order to meet these minimum calorie standards, suppliers meet the criteria by mixing LPG (Liquefied Petroleum Gas), which has a high calorific value, with low calorific LNG. However, due to the continuous demand from the city gas industry for the artificial adjustment of calories, there is a side effect of increasing social costs. In July 2012, Korea introduced a method of converting the amount of city gas to calorie, Calorie error correction. In order for such a calorimetric system to be introduced, the use time and the meter reading time must coincide with each other. As the system is implemented without sufficient preparation, many side effects are predicted.

However, no technology or product has been developed to comprehensively compensate for errors in gas volume and calorie. That is, only a piece of technology related to the volume error corrector or the remote meter using the MOD-BUS or Zig-Bee communication has been developed, and the measured amount in the meter or the volume error corrector of the user is corrected by the volume error correction Technologies for converting or calibrating the 'actual calorie' to 'real time' using the calorie error correction method, or transmitting it using the general purpose internet network have not yet been developed or proposed. It is necessary to secure city gas usage information more accurately and effectively.

On the other hand, conventionally, it is not known that more useful information can be processed and analyzed from the information about the gas to be detected for error correction, and is used only for automatic meter reading and error correction. The change of the amount of the city gas with time, the change of the temperature or the pressure of the gas may contain various information about the user's living situation and the living environment related to the use of the city gas. In other words, city gas is one of the main energy sources supporting the user 's life and is closely related to the user' s life because it is used as means of cooking and heating the user. In addition, city gas can cause fire or explosion if used improperly, which is a danger to safety. Users always want to be able to use city gas safely.

 The inventor of the present invention has continued research on the automatic gas meter automatic gas meter, and if processed and analyzed information about the use of city gas appropriately, it will be possible to obtain various useful additional information related to individual living conditions or safety . The present inventors have also found that by collecting the same information for a plurality of users, it is possible to grasp correlations with various social factors such as the use area, the income level, the number of families, the type of business, and the rate increase and thereby obtain more necessary macroscopic information I also knew the viscosity. It would be desirable if the information obtained could be utilized for the convenience and safety of gas users. However, there is no recognition about this point in the past, so the usage information about city gas has been used only as remote automatic meter reading. In other words, in the past, information about city gas was used only for correction of the pressure error of the usage amount and remote automatic measurement of the calibrated usage amount, but it was not utilized for other purposes, and this point needs to be improved.

The present inventor has been continuously studying the utilization, analysis, and processing methods of city gas related information in order to overcome the problems of the prior art which utilize city gas related information only for a very limited scope and purpose. As a result, the inventor of the present invention can obtain some basic information about the city gas in real time, so that it can provide additional information about the life state and safety of the gas user, macroscopic information corresponding to the public interest concerning the gas user group, , And that it can be helpful to individuals and groups of gas users by sharing such information with related agencies (local governments, fire departments, police offices, apartment management offices, etc.) I realized.

Based on this recognition of the present inventors, the present invention is to provide a method for correcting the error of the amount of city gas used and correcting the error of the consumer's life safety through the interpretation of data on the use of city gas, (Information on living conditions and environment, leakage of gas or abnormality of equipment, abnormal signs of user's identity, etc.) and problems with city gas supply facilities, And a system and a system for providing a comprehensive service for controlling the user to be automatically notified to the system of the concerned institution so that the user can take appropriate measures for the prevention of an accident or a case for safety.

It is another object of the present invention to provide a method and a system for deriving macroscopic information on a living group of a specific group that can be used as basic data of a policy by processing and analyzing information on a user group of city gas do.

It is another object of the present invention to provide a method and a system that enable the analysis of city gas pipeline network in real time without any additional investment to optimize piping, maintenance, and data necessary for piping design in a new area do.

In accordance with an aspect of the present invention, there is provided a method for controlling a gas use control system including a plurality of remote meter reading terminals installed in each gas meter of a user, a controller for communicating with the remote meter reading terminals via a communication network, A method of intelligently providing city gas remote meter reading and a life safety control using a system is provided. The method comprises the steps of: (1) measuring each of the basic gas-related information including the gas usage amount, the gas temperature and the living environment temperature, and the gas pressure information with respect to time with respect to each of the remote meter-reading terminals installed in the user's gas meter step; (2) (i) The gas temperature or the living environment temperature measured by each remote meter reading terminal may be measured in a state where high temperature damage may occur, a situation where cold weather may occur, a situation where a fire may occur, (Ii) determining at least one of the temperature-related living situations by comparing the measured temperature with a threshold temperature value set for at least one of the 'temperature related living situations' (Hereinafter referred to as a "life abnormal situation") in which the use of the gas according to the gas consumption is stopped for a predetermined period of time, (Hereinafter referred to as a "gas appliance inspection situation"), and a gas leak can be regarded as a gas leak, (Hereinafter, referred to as a " gas leakage situation "), and at least one of the living conditions related to the gas consumption amount is determined One of which is performed at each remote meter terminal; (3) In each remote meter-reading terminal, information on the living conditions generated when it is determined that at least one of the temperature-related living conditions and the gas consumption-related living conditions has occurred is transmitted to the control-use computing device through a communication network ; And (4) when the information about the generated living situation transmitted from the remote meter terminal is received in the control computing device, an alarm about the living situation generated in the communication terminal of the concerned party in the generated living situation The method comprising the steps of: (a) providing a local gas mistake correcting method;

The method comprising the steps of: transmitting the gas-related basic information measured by each remote meter-reading terminal to the administrative computing device; Information on the gas use area, information on the gas use industry, information on the family members of the user, information on the gas supply unit price, information on the use of the gas, information on the gas use appliance Providing information on at least some of the information about the type of the air conditioner and the amount of gas used by the device, and information about the air conditioner and the heating area to the control computer device; In the control computer device, macroscopic additional information (situation grasp, statistics and prediction) for each of a plurality of gas users by region and group is generated by the combination of the gas related basic information and the social information or each of these pieces of information The method comprising the steps of: In the above method, the macroscopic additional information for each region and the group includes (i) usage statistics by user, date, time, information for each user's usage (information on flow rate and usage time) / Information on the time of use of gas appliances such as cooking appliances; (ii) observation of changes in room temperature (or gas temperature) by user, region, and time; (iii) Analyze the correlation between the gas usage / use time and the room temperature (or gas temperature) by user / region (especially during winter), and provide the analysis result to the user. And if there is a specific tendency, the cause (heating / insulation structure abnormality, etc.) identification recommendation occurrence; (iv) generate a low temperature or high temperature alarm for a user in the same geographical / residential environment when the temperature of some of the users is particularly cold or hot; (v) Prediction of usage by user, date, and time; (vi) If there is a lot of difference between users and forecasts, the cause identification recommendation occurs; (vii) Gas consumption by region and single family (age group); (viii) calculating gas consumption by region, industry and sales; (ix) Statistics and forecasts of changes in usage and usage of gas by region, industry type, sales, 24 hours, monthly / season according to user characteristics (use / region / industry type / area, etc.); (x) Prediction of gas usage by region, industry, sales, 24 hours, monthly / seasonal; (xi) Observation of changes in gas usage by user and specific group according to city gas price hikes; (xii) And at least a part of information on statistics and prediction regarding changes in gas consumption by users and specific groups according to city gas fee fluctuations.

The method may further include, in the control computer device, transmitting a notification or alarm to the communication terminal of the related party based on the content of the new additional information.

In the above method, if there is no use of gas for a first predetermined time or longer, a 'living abnormality alarm' is generated because an abnormality has occurred in the user's personal image, and if the continuous gas usage amount for the second predetermined time or longer is' , The 'gas appliance check' alarm is generated from the fact that there is an abnormality in the gas appliance, and when the continuous gas use amount for the third predetermined time or more exceeds 0 and falls below the 'usage lower limit value' It is desirable to generate a 'gas leak check' alarm.

In the above method, the limit temperature value set for each temperature related living situation and the limit flow value set for each living situation related to the gas usage amount may be (i) directly inputted at the remote meter reading terminal; (ii) the remote meter terminal itself calculates or determines a predetermined logic in consideration of an average value during a predetermined period or an average value according to a season and a time; And the control device is obtained by any one of those provided to the remote meter terminal.

The method comprises the steps of, in each remote meter-reading terminal or in the control apparatus provided with the measured gas-related basic information from the respective remote meter-reading terminals, a temperature difference between the reference temperature and the measured gas temperature, and a pressure between the reference pressure and the measured gas pressure And calculating the error-corrected gas volume usage by applying the calculated gas volume error to the gas volume usage amount. The method further includes the step of calculating a real time city gas calorific value [MJ / Nm ³ ] at a time point before the supply delay time [unit time] of the city gas to the error corrected gas volume usage collected in real time in the control computer device It is preferable to further include a step of calculating the urban gas calorific value correction amount [MJ / unit time].

The method is based on the conservation (continuity) law, using temperature, pressure, mass flow rate, flow rate, pipe length, height, cross-sectional area and density information on the gas supplier, user_A, user_B It is preferable to further include a step of analyzing the city gas pipeline using equations (A1) to (A4) and the following equations (B1) to (B5) that can be established based on the momentum and energy conservation laws.

Q _S = Q _A + Q _B - (A1)

Q _S =? _S ? V _S ? S _S - (A2)

Q _A = ρ _A揃 V _A揃 S _A - (A3)

Q _B =? _B ? V _B ? S _B - (A4)

Here, subscripts ' _S ', ' _A ', and ' _B ' respectively denote a gas supplier region, a user A region, and a user B region, Q denotes a mass flow rate, V denotes a gas flow rate (m / sec) , S represents the cross-sectional area of the pipe, ρ represents the density (kg / m 3) of the gas,

(P _S + (1/2) ρ _S揃 V _S ² + ρ _S揃 g 揃 h _S ) - (P _A + (1/2) ρ _A揃 V _A ² + ρ _A揃 g 揃 h _A ) = P _{f, S} + P _{f, A} - (B1)

(P _S + (1/2) and ρ _S and V _S + ρ ² _S and g and _{h S) - (P B +} (1/2) and ρ _B and V _S ² + ρ _B and g and h _B ) = P _{f, S} + P _{f, B} - (B2)

P _{f, S} = Φ (L _S , S _S , V _S , k _S ) - (B 3)

_{P f, A = Ф (L} A, S A, V A, k A) - (B4)

P _{f, B} = Φ (L _B , S _B , V _B , k _B ) - (B 5)

Where p represents the gas pressure, P _f represents the pressure loss, L represents the length of the pipe, h represents the height of the target point in the pipe for measurement or calculation, g represents the acceleration of gravity (9.8 m / sec ² ), The function Φ is a simple increase function, and k is the material and roughness of the pipe.

Preferably, the method further comprises performing at least one of the following pipe network interpretation and warning measures in the control computer device: ( _A ) when Q _S <Q _A + Q _B Generating an alarm indicating that gas leakage has occurred in the piping; (B) If the pressure (P _A or P _B ) is lower than the atmospheric pressure (P ₀ ), gas can not flow out from the user A or user B piping, Or to generate an alarm to increase the supply pressure; (C) pressure drop (P _{f, S,} or P _{f, A} or P _{f, B)} is large, the diameter of the pipe (S _S or S _A or S _B) to replace large, or the feed pressure (P _S) to Generating an alert indicating that it needs to be increased; (D) P _A is lower than the atmospheric pressure, and P _B is the atmospheric pressure (P) when the two users A and B have L _A > L _B and S _A = S _B and P _{f and A} P _{f, 0} ), thereby generating an alarm indicating that there is a need to replace the pipe. _{Here, P f, A <P f} , how to determine _B is P _S, P _A, direct measurement of P _{B or, P f, A = Ф (} L A, S A, V A) and P _{f, B} = Φ (L _B , S _B , V _B ); (E) If P _A <P _{f, B} , then if P _A <P _B , generate an alarm to notify that there is a leak in the pipe between the branch point and user_A. _{Here, (P f, A <P} f, B) the confirmation method (P _S, P _A, P _B) the direct measurement _{or, P f, A = Ф (} L A, S A, V A) and P _{f, B} =? (L _B , S _B , V _B ); ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') of the pipe calculated from the formula (B1) or (B2) Is less than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated from the pressure drop B5, Generating an alarm notifying it; ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') of the pipe calculated from the equation (B1) or (B2) Is more than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated from the pressure drop B5, Generating an alarm notifying it; (A) If the pressure loss ' _{Pf, S} + _{Pf, A} ' or ' _{Pf, S} + _{Pf, B} ' decreases without any special reason such as increase in flow rate or a significant increase in temperature _, ', So creating an alert to notify it; If the pressure loss 'P _{f, S} + P _{f, A} ' or 'P _{f, S} + P _{f, B} ' increases without a specific reason such as an increase in flow rate or a significant increase in temperature _, 'So you can create an alert that notifies you of it.

According to another aspect of the present invention, there is provided a remote meter reading terminal installed in each gas meter of a user. And a controller for communicating with the remote meter terminals via a communication network, wherein each of the remote meter terminals includes at least one of a gas consumption amount, a gas temperature and a living environment temperature with time, Measuring basic gas related information including pressure information; (i) the measured gas temperature or the living environment temperature must be at least one of the following: a condition where high temperature damage may occur, a situation where cold weather may occur, a situation where a fire may occur, Related living conditions', and judging whether at least one of the temperature-related living conditions has occurred, and (ii) comparing the measured gas usage with the measured temperature-related living conditions for a predetermined period of time (Hereinafter, referred to as a 'life abnormal situation') and a gas appliance failure can be regarded as a situation where an abnormality has occurred in the user's personal information (Hereinafter, referred to as a "gas leakage situation") in which a gas leakage can be regarded as occurring, And comparing at least one of the living conditions related to the gas usage amount with a threshold flow rate value set for each living situation related to the gas use amount of the branch; And transmits information on living conditions generated when at least one of the temperature-related living conditions and the gas consumption-related living conditions is generated to the control-purpose computing device through a communication network; The control computing device, when receiving information on the generated living situation transmitted by the remote meter terminal, transmits an alarm related to the generated living situation to the communication terminal of the relevant party in the generated living situation City gas error corrector remote meter reading and life safety combined intelligent control service system are provided.

According to the present invention, it is possible not only to accurately perform volume correction and calorific correction on the amount of city gas but also to accurately and real-time remote automatic meter reading, thereby providing relevant information to the city gas supplier efficiently and economically. This could completely end the very long controversy between the user and the supplier (the gas company) and the unrelieved urban gas tariffs (which have an unfair tariff of about W250bn annually). In addition, it prevents the user from being charged an unreasonable charge, and the supplier can reduce the meter reading and the charging fee, which can lead to a discount of the city gas charge. In addition, it is possible to eliminate the inconvenience of the user due to the self-meter inspection system, and to prevent the disadvantage due to omission of the meter reading or the inspecting and inspection of the fare.

The present invention also enables information on the living conditions and the living environment of the gas consumer to be grasped by utilizing information such as the gas usage amount, the gas temperature, and the gas pressure according to the detected time for correcting the error of the usage amount of the city gas. In addition, it is possible to acquire macroscopic information by region and group for a large number of gas users, and it is possible to process regional and group situation and statistical and prediction information about gas users and use it as policy data.

Furthermore, it is possible to grasp abnormalities such as abnormally high temperature (fire etc.), abnormally low temperature (breakdown of heating equipment), breakdown of gas using equipment, gas leakage, To promptly prevent preventive measures to prevent gas-related safety accidents or urgent structure of consumers.

The present invention is a real-time pipe network analysis using only information collected from a terminal according to the present invention without any additional investment, and it is necessary to optimize piping, maintenance (optimization of supply pressure, abnormality confirmation, leakage, etc.) It enables us to derive data.

FIG. 1 is a block diagram schematically illustrating the configuration of a city gas error correction remote meter-reading and life safety control complex intelligent service system according to a preferred embodiment of the present invention,
2 is a block diagram illustrating a configuration of a remote meter reading terminal installed in a city gas meter of a consumer,
3 is a flowchart showing a process for generating additional information using gas temperature information,
4 is a flowchart showing a process of generating additional information according to the gas consumption amount when the gas meter is outdoors or requires an accurate room temperature,
5 is a block diagram for explaining input information and generation information to be processed by the central control unit,
6 is a diagram for explaining a method of analyzing a city gas piping network.

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

Prior to the description of the present invention, the meanings of some terms used herein are as follows: (i) 'living situation' refers to a situation in which the consumer experiences at a certain moment in the daily life of a particular consumer . For example, at what point gas is used, whether a fire occurs, whether it leaks gas, whether it is heated in winter, and whether a particular gas appliance is used. (ii) "Living environment" refers to the surrounding environment experienced in the daily life of a specific consumer, and is related to the time constant compared to the situation. For example, the temperature of a certain consumer during a day, cumulative gas consumption, and so on. (iii) 'User's social information' means the number of users' family members, geographical location, address, usage (catering / heating / cooling / sales), area, industry / sales (for business use) It refers to the information related to the daily life of the user, such as gas consumption per device. (iv) 'Macroscopic information' refers to collective information (Big Data) of a large number of users. For example, it refers to the peak use time of a gas in a specific area, the change of the gas usage amount of a specific business over time, the change of the usage amount due to the change of the charge rate, and the living environment (temperature, etc.) according to the income level. (v) 'pipe network analysis' can analyze flow, pressure distribution and pressure loss by analyzing energy and momentum movement of piping by applying hydrodynamic theory (eg Bernoulli's theorem, continuity law, etc.) . These data are used to manage piping, optimize supply pressure, optimize piping, and optimize the expansion / modification of the customer (piping). It also provides data for designing similar areas. (vi) 'Real-time information' refers to information that is effectively applied socially and systematically at a time when information is needed, and therefore 'real time' means within an amount of time within which such a guarantee can be guaranteed. (vii) 'unit time' is the time to determine data collection and data generation cycle. The time it takes to use a certain amount of time as unit time, such as minute [min], hour [hr], day [day], month [month], or to reach a certain amount of usage (volume, temperature pressure correction volume, May be used as the unit time. In the latter case, the unit time is variable, for example, a period for using 1 m ³ or a time for using 1 MJ (i.e., unit time = 1 m ³ use period or unit time = 1 MJ use period) .

(1) Configuration of control system

1, there is shown a configuration of a city gas error correction remote meter reading and life safety control complex intelligent service system 100 (hereinafter simply referred to as a 'control system 100') according to a preferred embodiment of the present invention. The control system 100 is provided with a remote meter reading terminal 10 installed for each city gas consumer area (home or business place), a control computer device 10 communicably connected to all the remote meter reading terminals 10 via the communication network 40, (Hereinafter simply referred to as &quot; control device 50 &quot;). The remote meter reading terminal 10 is installed at a position close to the city gas meter 5 of the consumer. The control device 50 may be configured in various forms such as a configuration in which a local control device is provided for each predetermined area and the control device is connected to a single control device again. The communication network 40 is a system for communicably connecting each of the remote meter-reading terminals 10 and the control apparatus 50. The communication network 40 is not limited to one type of communication system but may be a wired and wireless communication system, .

The configuration of the remote meter reading terminal 10 will be described in more detail with reference to FIG. The remote meter reading terminal 10 is installed for each city gas meter 5 of a consumer and has a unique identification number. This identification number is always transmitted to the control device 50 when communicating with the control device 50 so that it can be known which communication device 50 the control device 50 is communicating with. The remote meter reading terminal 10 includes a gas usage volume measuring unit 12 for generating information on the flow rate (volume unit) of the city gas flowing through the city gas pipeline provided with the meter 5, that is, the amount of gas used (volume) And a gas temperature measuring unit 14 for measuring the temperature of the gas. And a gas pressure measuring unit 16 for measuring the pressure of the gas.

The remote meter reading terminal 10 further comprises an operation control unit 20 as a basic component. The operation control unit 20 has a correction volume calculating unit 22 for calculating a pressure error correction coefficient relating to the amount of gas used (volume) by using such information, and applying the same to generate a pressure error correction amount for the gas consumption. The operation control unit 20 may further include an additional information calculation / extraction unit 24 for generating additional information on the living or living environment of the gas user by utilizing the gas temperature and the gas usage amount information. And a timer 26 for counting time to generate information about the current time. The arithmetic and control unit 20 includes a CPU for performing data processing related to various operations and control, a RAM (RAM) for providing a data processing space of the CPU, and a nonvolatile memory for storing various data and programs . It also includes a timer 26 that counts the current time and provides it to the CPU. The calculation control unit 20 includes a program that implements functions such as a correction volume calculation unit 22 and a side information calculation / extraction unit 24, which will be described later.

The remote meter reading terminal 10 further includes a communication unit 30 capable of communicating with the control apparatus 50 through the communication network 40 as a basic element. In addition, it may further include input means and output means such as an LCD, an LED, a buzzer, a switch, a key input unit, and the like.

The gas usage volume measuring unit 12 measures a meter instruction value (a value at which error correction is not performed according to a change in temperature or pressure) indicative of the gas consumption of a city gas meter for measuring the gas flow rate, such as a film meter or a rotary meter, Any method of measurement can be applied as long as it has a function capable of converting it into an electrical signal and providing it as a digital value. For example, the gas usage volume measuring unit 12 may measure a specific number of wheels of a numeric keypad indicating the instructions of a city gas meter by using a light sensor, a magnetic sensor, a capacitance sensor, an inductance sensor, The number of revolutions of the internal parts of the meter which periodically moves in correspondence with the number of revolutions of the number wheel or the number of revolutions of the number wheel, is converted into an electrical signal and is counted as a digital value Can be configured. A configuration in which the instruction value of the numeric keypad of the meter is photographed by the camera and then converted into a digital value by applying a character recognition technique may be another example of the configuration of the gas usage volume measurement unit 12. [

The gas temperature measuring unit 14 may be configured as a means for measuring the temperature of the city gas and a temperature sensor for providing a digital value by measuring the temperature inside or on the gas pipe or the gas meter. It can be a temperature sensor capable of converting the temperature value into an electric signal and outputting it. Examples include metal temperature resistors such as thermocouples and platinum, non-metallic temperature resistors (thermistors), semiconductor temperature sensors, radial temperature sensors, metal core temperature sensors, and the like. There is an error of approximately 1 ° C between the temperature of the city gas flowing in the gas piping and the ambient temperature outside the piping. When the gas temperature measuring part 14 is provided on the surface of the gas pipe or on the outside of the gas pipe, the temperature of the gas itself may be set in consideration of the temperature difference.

The gas pressure measuring part 16 may be constituted by a gas pipe or a pressure sensor for measuring the pressure inside the meter 5. [ The available pressure sensors are not particularly limited as long as they can convert the measured air pressure values into electrical signals and provide them in the form of digital values. Examples thereof include a capacitive pressure sensor, a strain gage type pressure sensor, a semiconductor resistance type pressure sensor, and a piezoelectric element type pressure sensor. The correction of the error of the gas consumption amount may be made by correcting only the used gas volume error according to the temperature difference between the reference temperature and the actual temperature of the gas or by using the used gas volume according to the pressure difference between the reference pressure and the actual pressure of the gas Pressure correction for correcting the pressure together with the error or correction of the pressure and the compression factor for reflecting the compression factor of the city gas. In the case of performing only the temperature correction, only the gas temperature measuring section 14 is sufficient. However, in the case of performing the correction relating to the temperature and the pressure or the temperature-pressure-compression factor correction, the gas pressure measuring section 16 need. Information on the gas pressure is required for the analysis of the city gas pipeline network to be described later or generation of the additional information using the gas pressure.

The remote meter terminal 10 may further include an environmental temperature measuring section 18 as an optional component, as shown in FIG. The ambient temperature measuring section 18 measures the temperature of the space in which the meter is installed. When the gas meter (5) is installed indoors, the difference between the temperature of the gas and the installation space of the meter is about 1 to 2 ° C, which is negligible for the living temperature. However, in the following cases, there is a large deviation between the gas temperature and the meter installation space temperature, so that a separate environmental temperature measurement unit 18 is required in order to analyze the living situation or the living environment: (i) ; (ii) the distance between the installation location of the meter (5) and the living space is large; (iii) to better understand the temperature of the meter installation space. The environmental temperature measuring section 25 can be constituted by a temperature sensor like the gas temperature measuring section 14. [

The correction volume calculating unit 22 calculates a correction volume (a gas volume usage error caused by a deviation between a reference temperature and a gas temperature applied when the gas supplier supplies gas) or a pressure error correction Which is the gas volume usage error caused by the deviation between the reference temperature and the reference pressure applied at the time of supply and the gas temperature and the gas pressure). Furthermore, the error correction coefficient can be applied to calculate the error-corrected gas volume usage. Of course, it is also possible to transmit the error correction coefficient to the control device 50, and to calculate the gas volume usage whose error has been corrected in the control device 50. [ Since the temperature error corresponds to a part of the pressure error, the following description will be given taking as an example the case where the pressure error is given and the case where the pressure measurement error relating to the gas volume usage amount is corrected in the remote meter reading terminal 10 as an example.

For correction of the pressure error, the pressure error correction coefficient is calculated by using the pressure error correction coefficient and using it to calculate the pressure error correction amount concerning the gas usage volume. The correction volume calculating section 22 calculates the correction volume A program executed by the CPU of the arithmetic and control unit 20, and basic data for correction of the pressure error. The correction volume calculating unit 22 performs correction of the temperature and pressure error of the gas usage amount according to the physical law or the regulation of 'KS B 8300', which are summarized on the basis of thermodynamic theory and experiment. This error correction is performed by execution of the error correction program. Specific methods of temperature correction or temperature and pressure correction will be described later.

The additional information operation / extraction unit 24 of the operation control unit 20 is also implemented as a program and related data executed by the CPU. The additional information calculation / extracting unit 24 extracts additional information (for example, high temperature, cold weather, fire, frost, consumer life, gas leakage, gas appliance abnormality And the like). This additional information is generated through calculation of detection information such as gas consumption, gas temperature, and gas pressure. If it is determined that the result of the calculation corresponds to a situation that should be notified urgently, take measures to promptly notify the parties or related organizations. This situation is transmitted to the control device 50 in real time or in a time not long equivalent to real time. Of course, the additional information calculation / extraction unit 24 of the remote meter reading terminal 10 is limited to extract basic information such as the gas usage amount, the gas temperature (and the indoor environment temperature), and the gas pressure from the signals measured by the respective measurement units And the control device 50 may judge whether or not to generate an alarm using the basic information.

The communication unit (30) of the remote meter reading terminal (10) communicably connects with the control device (50). The communication connection between the remote meter reading terminal 10 and the control device 50 can be performed in various ways. The type of the communication section 30 and the communication network 40 of the remote meter reading terminal 10 is determined according to the communication method. The communication unit 30 of the remote meter reading terminal 10 is connected to the remote internet network 48 via a modem 42 of a nearby wireless telephone (3G, LTE, etc.) and a remote wireless telephone system 44 And is communicably connected to the control apparatus 50 connected to the Internet network 48. [ In this case, the communication unit 30 (indicated as A in the drawing) of the remote meter reading terminal 10, wired wired communication (such as UART, USB, PLC communication or the like) or wireless communication (WiFi, Zigbee, Bluetooth, , IRC, or acoustic communication). As another example, when the communication unit 30 (indicated by B in the drawing) of the remote meter-reading terminal 10 is connected to a wired communication (such as UART, USB, PLC communication) or wireless communication (WiFi, Zigbee, , IRC, and acoustical communication), and may be connected to the remote Internet network 48 through a wired / wireless Internet router 46 located in the vicinity and communicably connected to the control apparatus 50 .

In the remote meter reading terminal 10, the measurement of the gas consumption amount, the gas temperature, the gas pressure, the environmental temperature, and the like is preferably performed in a short time period corresponding to real time or real time. It is preferable that the information transmission period to the control device 50 is determined in consideration of data traffic. If the additional information on the above-mentioned living situation is determined to have occurred, it is desirable to transmit the additional information to the control device 50 in a short time period that is similar to real time or real time because it is necessary to take quick action. If the additional information is directly generated in the control device 50, it is necessary to transmit the basic information (information on the gas usage amount, temperature, pressure, etc.) to the control device 50 every time . If an abnormal symptom (for example, a fire occurrence) is found in the living situation as a result of the operation of the remote meter reading terminal 10, the fact is transmitted to the control device 50 in real time so that it can be quickly transmitted to the concerned party. The information transmission to the control device 50 may be performed either (i) periodically at a predetermined point in time, (ii) a calculation result using the measurement information, rapid situation propagation is required, (iii) .

On the other hand, the control device 50 includes a communication unit 55, a calculation control unit 60, an information input unit 65, an additional information generation unit 70, an information output unit 75, and a database unit 80. And is communicably connected to the remote meter terminals 10 installed in the city gas user area through the communication network 40.

The communication unit 55 is connected to the Internet network 48 and is connected to the remote meter terminal 10 via an Internet system 46 connected to a wireless telephone network (3G, LTE network and associated modem) 44, 42 or a wired / And is communicably connected to the communication unit 30 of the mobile terminal. The control unit 50 receives various kinds of data (information) transmitted from the remote meter reading terminal 10 and transmits the data to the remote controller terminal 10 while the control unit 50 transmits the data to be sent to the remote meter reading terminal 10.

The information input unit 65 is a means for inputting social information, and can be constituted by a normal computer device input means. Examples of social information include information on the use of the city gas (heating / cooling / cooking / sales) and capacity, information on the gas appliance to be used , Information on the cooling / heating area of the consumer, gas supply unit price, and the like.

The operation control unit 60 includes a CPU for executing a program and performing an operation indicated by the program, a memory for providing a data processing space of the CPU, a nonvolatile memory , A timer, and the like.

The database unit 75 stores the information received from the remote meter terminals 10, the social information input through the information input unit 65, and the operation control unit 60 using the information to store newly generated information As a database that can be searched, general-purpose databases can be used as they are or separately prepared.

The additional information generating unit 70 may be implemented as a program and executed by the CPU so that its function can be exercised. Various additional information is generated by using the data provided by the remote meter reading terminal 10 and the social information input through the information input unit 65. [ Additional information to be generated will be described later.

The information output unit 75 is a means for outputting or transmitting the transmitted, input, and generated information in a type / intangible form. The information output unit 75 is connected to the communication terminal 90 of the 'relevant party' to receive the control information, the alarm message, and the like related to the living conditions of the city gas users or the living environment through the wireless telephone network 85 or the Internet 48, As a means of transmitting related control information or alarm messages. For example, a character sending server, a web server, a communication means through a communication line dedicated to the system of the information receiver 90, and the like may be used. Here, the related party may be the information receiver 90, for example, the city gas user himself / herself or his / her guardian, or the person in charge of the fire station / police station / town office responsible for the residential area of the city gas user, . The communication terminal 90 of these involved parties may be, for example, a cellular phone, a computer device, or a specialized alarm system. The information output unit 75 may further include a general computer output means (such as a display, a printer, a speaker, and the like).

The control device 50 may be constituted by a computer system of a gas supply company or, alternatively, a computer system operated by a third entity. In the latter case, the information required by the computer system for remote automatic gas measurement is provided to the computer system of the gas supplier through the communication network.

By using the intelligent control system 100 having such a configuration, operations performed by each remote meter-reading terminal 10, operations performed by the control device 50, and various other tasks for accomplishing the objects of the present invention are performed .

(2) Correction of errors related to city gas usage volume

Accurate remote meter reading is possible by correcting the error about the volume of city gas usage.

(A) First, the correction of the pressure error relating to the amount of city gas volume usage will be described. This is described in detail in the above-mentioned prior art, so that a brief description will be given.

The correction volume calculating unit 18 calculates the correction amount calculating unit 18 from the gas usage volume measuring unit 12, the gas temperature measuring unit 14 and the gas pressure measuring unit 16, Receive. These information may be provided at regular intervals or at a constant gas consumption or may be provided on an irregular basis. However, it is preferable to be provided at a time corresponding to real time or real time. Using these information, a pressure error correction coefficient for correcting the pressure error included in the meter reading usage amount is calculated, and the amount of city gas use corrected based on the reference condition (reference temperature and reference pressure) is calculated.

Specifically, at least one of the instantaneous pressure error correction coefficient, the daily pressure error correction coefficient, and the monthly pressure error correction coefficient is calculated by using the gas temperature value and the gas pressure value (which are instantaneous temperature value and instantaneous pressure value) One is calculated and stored in the memory together with the date information or month information. The calculated pressure error correction coefficient is applied to the gas consumption amount (volume) indicated by the instrument panel of the meter 5 to calculate the pressure error correction amount related to the gas consumption amount. The calculated pressure error correction amount is the amount by which the difference between the instantaneous temperature value and the instantaneous pressure value of the measured gas, the reference temperature value applied at the time of city gas supply, and the reference pressure value changes the gas volume.

The instantaneous pressure-pressure error correction coefficient K _TP may be calculated by the following equation (1-2). In equation (1-2), P and T represent instantaneous pressure values and instantaneous temperature values, respectively. Equation (1) is obtained by using the following equation of KS B 8300 applying Boyle-Charles's law.

....(1)

....(One)

In the above, P _b and T _b represent the reference pressure and the reference temperature respectively, Z _b represents the compression factor at the reference temperature pressure, and Z represents the compression factor at the instant. The compression factor is a numerical value representing the deviation from the ideal gas and is determined as a function of temperature, pressure and composition. The method of determining (calculating) the compression factor is thermodynamically various, and usually has a value close to '1'.

One method of correcting the pressure error using the instantaneous pressure error correction coefficient K _{TP is} to calculate the instantaneous pressure error correction coefficient in the corresponding period when the calculation of the instantaneous pressure error correction coefficient is performed every predetermined time period, And the gas consumption amount instruction value (amount indicated by the meter 50). Alternatively, the daily pressure error correction coefficient, which is an average value of the total instantaneous pressure error correction coefficients calculated every day, is calculated, and the corrected daily water consumption amount is calculated by multiplying the daily pressure error correction coefficient by the daily gas pressure instruction value of the day It is possible. The monthly pressure increase correction coefficient which is an average value of the total instantaneous pressure increase correction coefficient or the total daily pressure increase correction coefficient calculated every month is calculated, And the gas consumption amount of the gas. More precise error correction will be possible if the use of city gas at the time of measurement of temperature and pressure or during the measurement time period or the weighting according to gas consumption is applied.

(B) Next, calorimetric correction will be described.

For gas use, what the user wants to achieve is energy, or calorie. Therefore, it may be more accurate to calculate between the gas supplier and the gas consumer based on calories, rather than the volume of gas. In order to calculate the calorie accurately, it is necessary to correct the calorie error with respect to the gas volume in which the pressure error is corrected.

This calorie error correction can be processed by the additional information generation unit 70 of the control device 50 or by the additional information calculation / extraction unit 24 of each remote meter probe 10. Either case is performed by a program module for calorie error correction. The program calculates the unit calorific value of the city gas and the supply delay time of the city gas provided by the city gas supplier and computes the collected information with the real time gas consumption amount (volume unit) (Hereinafter referred to as &quot; calorie correction usage amount &quot;).

First, a case where the additional information generating unit 70 of the control apparatus 50 performs the calorie correction use amount will be described. In order to calibrate the calorie error, it is necessary to provide information on the unit calorific value of the real-time city gas and information on the delay time of the city gas. The unit calorific value information of the real-time city gas is the amount of heat generated when the city gas of the reference volume is burnt, and is information provided by the city gas supplier. The unit calorific value [MJ / Nm ³ ] of the city gas being supplied from the city gas supplier to the area where the gas meter 5 is installed can be collected via the Internet and / or the wireless communication means 40. The supply delay time information of the city gas is the time (hr or day, etc.) required for the city gas to move along the pipe from the city gas supplier to the area where the gas meter is installed, and this information is also transmitted to the city Gas suppliers.

More specifically, the operation control unit 60 of the control device 50 obtains the two pieces of information via the Internet 48 or the wireless communication network 85 and provides them to the additional information generation unit 70. [ The additional information generation unit 70 calculates the real-time calorie correction usage amount using the information. The city gas calorific value correction amount thus calculated is stored in the database 80.

The amount of city gas calorific correction usage [MJ / unit time] is the information on the amount of city gas volume correction [Nm ³ / unit time] that is collected in real time, that is, / Nm ³ ] information and the supply delay time of the city gas [unit time, that is, hr or day, etc.]. Specifically, it is calculated by the following expression.

H _c = V _c x H _u (2)

In the above formula (2), H _c represents a natural gas heat compensation amount {MJ / unit time} _(T), V _c illustrates gas volume correction amount [Nm ³ / unit time] has the _(T), H _{and u} represents the city gas calorific value [MJ / Nm ³ ] _(Td) . Here, the subscript ' _(T) ' means a moment. That is, 'X _(T) ' refers to the value of information X at an instant. The subscript ' _(Td) ' refers to the previous point in time as 'unit time' d. Here, d represents the supply delay time (expressed in unit time) of the city gas.

If the additional information calculation / extraction unit 24 of the remote meter terminal 10 calculates the amount of the calorific value of the city gas calorific value, the unit calorific value information of the real-time city gas collected by the control unit 50, To the remote meter reading terminal 10 and gives the additional information calculating / extracting unit 24 the above-described calorie correction usage amount calculating function.

(3) Generation of additional information and real-time alarm

Changes in the amount of the city gas over time, changes in the temperature and / or pressure of the gas include a lot of information about the living situation and living environment related to the use of the city gas. Observing such information can lead to detailed and useful information on the life situation and living environment of the gas users, and in particular safety. In addition, by collecting the same information for several users, statistics on the change in gas consumption according to the gas price fluctuation and the characteristics of the users (gas use purpose, region, industry, family number, income level, living space area, etc.) (Situational awareness, statistics, and forecasts) for a large number of users, including location, location, and forecasting, and identification of various social factors and correlations. Furthermore, the gas pipeline network can be analyzed from the gas flow rate and gas pressure data by region and time to obtain information for optimizing the gas supply pressure, extending and extending the piping network (including leakage), and properly managing the piping network such as the new piping supply policy .

At least a part of the additional information may be directly generated by the remote meter reading terminal 10 and provided to the control device 50 or may be provided to the control device 50 through the basic information and / 65), which are provided through the Internet. The information that needs to be quickly notified to the related party among the generated additional information is notified to the communication terminal 90 of the related party through the information output unit 75 and / or the communication unit 55. [

(A) Create additional information at the remote meter terminal 10

It is preferable that the additional information generated by the remote meter terminal 10 mainly grasps the living situation of the gas user and generates safety related information. Additional information that can be generated by the remote meter reading terminal 10 is exemplarily shown in the following table. This additional information is generated by the additional information operation / extraction section 24. [

Warning
Kinds Alarm History How to create High temperature If the 'gas temperature' or 'living environment temperature' exceeds the 'gas temperature high temperature limit' or 'living environment temperature high temperature limit' (1) When measuring the 'living environment temperature' directly by the environment temperature measuring unit 15, 'living environment temperature high / low temperature limit' is applied. The 'living environment temperature high / low temperature limit' is determined according to the health of the consumer or the characteristics of life. The high temperature limit is usually 30 to 40 占 폚, and the low temperature limit is usually -5 to -10 占 폚.
(2) When the 'living environment temperature' is not measured directly, 'gas temperature high / low temperature limit' is applied. 'Gas temperature high / low temperature limit' applies the function Ф (terminal installation environment, living environment high / low temperature limit). Here, the function Φ is determined experimentally or statistically. For example, if the terminal is installed in a multipurpose room, 'gas temperature high / low temperature limit' = ('living environment high / low temperature limit' x 0.5).
(3) The 'fire judgment temperature' is the same as (1) and (2) above, or it is not necessary to make a difference according to 'gas temperature' and 'living environment temperature'. Cold weather 'Gas temperature' or 'living environment temperature' is below the 'gas temperature low temperature limit' or 'living environment temperature low temperature limit' fire Generated when the 'gas temperature' or 'living environment temperature' exceeds 'fire judgment temperature' Frozen If the 'gas temperature' drops below the '(upper / lower) water wave generation temperature' '(Upper / Lower) Water flow generation temperature' = Ф (terminal installation environment, water freezing temperature). Here, the function Φ is determined experimentally or statistically. For example, when the terminal is installed in a multi-functional room, the (upper / lower) water wave generation temperature = (water temperature of water - 5 ℃). life
More than Long-term use of gas is stopped The period of 'gas stoppage' is 48 ~ 96 hours. Gas equipment inspection Generated when 'gas flow rate' exceeds 'flow rate upper limit' The 'flow limit' depends on the consumer's gas usage. About 5 to 10 liters / minute is suitable for cooking-only households, and 30 to 50 liters / minute for gas boiler heating households. gas
Leakage (1) Generated when 'gas flow' is maintained between 'lower flow limit' and '0' The lower limit of the flow rate is 0.1 liters / minute, which is smaller than 1/10 of the gas consumption per household gas range.

The additional information generated by the remote meter terminal 10 may include temperature related additional information generated by using the gas temperature measured by the gas temperature measuring unit 14 and / or the ambient temperature measuring unit 18, . Examples of the temperature-related additional information include, for example, additional information related to temperature such as a high temperature alarm, a cold alarm (low temperature alarm), a fire alarm, and the like. The high temperature alarm is generated when the 'gas temperature' or 'living environment temperature' exceeds the 'gas temperature high temperature limit' or 'living environment temperature high temperature limit', which may interfere with the health of the consumer. The cold alarm (low temperature alarm) is generated when the 'gas temperature' or 'living environment temperature' falls below the 'gas temperature low temperature limit' or 'living environment temperature low temperature limit', which may interfere with the health of the consumer. This situation can be suspected that an abnormality has occurred in the heating device. The fire alarm is generated when the 'gas temperature' or 'living environment temperature' exceeds 'fire judgment temperature'. It is possible to separately generate a fire occurrence check alarm when the fire temperature is higher than the 'suspected fire temperature' (lower than the fire judgment temperature) before the fire is confirmed.

The user can manually input the temperature (high temperature limit, low temperature limit, fire judgment temperature, fire occurrence suspicious temperature, etc.) serving as a criterion for generating such alarms by the service provider manually from the remote meter terminal 10, ) Can be calculated / determined on its own by appropriate logic (average temperature over a certain period, average temperature according to season / time, etc.) or can be delivered from the control device 50. In the case of directly measuring the 'living environment temperature' by providing the environment temperature measuring unit 18, the high temperature limit and the low temperature limit value of the living environment temperature measured by the environment temperature measuring unit 18 and the living environment temperature are applied do.

In determining the limit value related to the temperature, in the case of the upper limit, the setting of the upper temperature limit for the fire alarm is simply determined to be sufficiently high. The gas temperature measuring units 14 and 18 and the gas meter 5 may be provided on the basis of the season or the monthly average since the gas temperature measuring units 14 and 18 and the gas meter 5 need to be different from each other. It is preferable to set a weight according to the position of the light source. The high temperature limit and the low temperature limit value of the living environment temperature are determined according to the health of the consumer and the characteristics of life. The high temperature limit is usually 30 to 40 占 폚, and the low temperature limit is usually -5 to -10 占 폚. When the 'living environment temperature' is not directly measured, the gas temperature value measured by the gas temperature measuring unit 14 and the high temperature limit value and the low temperature limit value of the gas temperature are applied. The high temperature limit and the low temperature limit of the gas temperature can be calculated by applying the function Ф (terminal installation environment, living environment high / low temperature limit). Here, the function Φ is determined experimentally or statistically. For example, when the remote meter reading terminal 10 is installed in the multi-functional room, the high temperature / low temperature limit value of the gas temperature = the living environment high temperature / low temperature limit value x 0.5. The 'fire judgment temperature' can be set as in (1) and (2) above, or it is not necessary to make a difference according to 'gas temperature' and 'living environment temperature'.

Additional information that can be generated using the temperature is, for example, a frost alarm. The wave alarm is generated when the 'gas temperature' drops below the '(upper / lower) water wave generation temperature'. Here, '(upper / lower) water wave generation temperature' = Ф (terminal installation environment, water freezing temperature). Here, the function Φ is determined experimentally or statistically. For example, when the terminal is installed in a multi-functional room, the temperature of occurrence of (upper / lower) water wave can be set to (temperature of freezing of water - 5 ° C).

The flow chart of FIG. 3 shows a process of generating the additional information using the gas temperature in the intelligent control system 100 of FIG. 2 and generating an alarm. In this operation, all the steps are preferably performed by the remote meter terminal 10, and only the resulting alarm is provided to the control device 50.

Specifically, the additional information calculating / extracting unit 20 of the remote meter reading terminal 10 receives the temperature of the gas (and the living environment temperature) from the gas temperature measuring unit 14 (step S10). Then, the supplied gas temperature or living environment temperature is compared with an upper limit value and a lower limit value of the alarm generation reference temperature (high temperature limit, low temperature limit, fire judgment temperature, fire occurrence suspicious temperature, etc.) (step S12). As a result of the comparison, if the upper limit value is exceeded (step S16), or if the lower limit value is exceeded (step S18), an alarm corresponding to the upper limit value or the lower limit value exceeding condition is generated (step S20). The additional information operation / extraction unit 24 of the operation control unit 20 transmits the generated alarm and related information and the identification information of the corresponding remote meter terminal 10 to the control device 50 through the communication unit 30 (Step S24). The operation control unit 60 of the control device 50 stores the contents of the alarm in the DB 80 when an alarm is received from the remote meter terminal 10 and sends the alarm to the relevant party via the information output unit 75 And take delivery follow-up measures. If it is determined in step S12 that the temperature is within the normal range (step S14), the gas and indoor temperature measurement temperatures are periodically provided and the operation of comparing the measured temperature with the upper and lower limit values is repeated (steps S10 and S12). The upper and lower temperature limits used as a reference in the comparison in step S12 may be input directly from the remote meter terminal 10 by the user or provided by the control device 50 or by the additional information calculation / The logic for extracting the reference value may be calculated by itself (S24). In this way, temperature-related additional information and alarms can be generated. Of course, the operation of FIG. 3 can also be performed in the control device 50. FIG.

Next, there is additional information that can be generated using the real-time gas consumption amount measured by the gas usage volume measuring unit 12. [ Examples of this are 'long-term continuous gas alarm' and 'long-term continuous gas alarm'. The 'long-term continuous gas alarm' can be divided into two cases according to the continuous use gas flow rate.

First, if the gas flow rate exceeds the 'upper limit of the flow rate', there is a risk of fire or explosion due to abnormality of the gas appliance, and thus a 'gas appliance check' alarm is generated. Conditions in which gas usage continues for a certain range of flow rates over a certain period of time (continuous service life) can occur when the gas is leaking or if there is a failure in the gas appliances. The upper limit of the flow rate depends on the consumer's use of gas and the amount of gas consumed by the consumer. For example, the maximum gas consumption of a cooking gas range is 15 liters / minute or less, and the maximum gas consumption of a heating boiler is 30 to 60 liters / minute. If the gas is used only for cooking purposes, it can be judged that the consumption is about 5 to 10 liters / minute and the maximum gas consumption exceeds 15 liters / minute. If the gas is used for cooking and heating purposes, it can be judged that the gas consumption exceeds 60 liters / min.

Second, if a state of continuous use of a small amount of gas over a certain period of time is detected, a 'gas leak check' alarm is generated and the related party is notified immediately because the gas leakage is suspected. In other words, when the gas flow rate is maintained between the lower limit value and the zero value, it is judged that the gas flow rate is lower than the lowest gas flow rate of the gas using equipment , And generates a gas leak check alarm (lower limit of usage). The lower limit of the flow rate is 0.1 to 0.5 liters / minute, which is less than 1 liter / minute of gas consumption per one household gas range. Here, the marginal flow rate and the marginal time can be entered manually by the remote meter reading terminal 10, calculated / determined by themselves with appropriate logic (a certain period average, an average according to season / time, etc.), or transmitted from the control device 50 Can receive. The controller 50 may also collect and analyze data (e.g., average, other factor weighted average, etc.) for changes in gas usage over a period of time.

In addition, if there is no use of gas for a certain period of time (continuous non-use period), "long-term continuous gas alarm (life alarm)" is generated and notified to concerned parties immediately. The 'gas use stop period' is suitably about 48 to 96 hours, for example. This is especially important for gas users, especially for single-person households and elderly households. Here, the continuous use period and the continuous non-use period can be entered manually by the remote meter reading terminal 10, calculated / determined by themselves with appropriate logic (average over a certain period, averaged according to season / time, etc.) ).

In generating various alarms, limit values relating to time can be applied together, and the time-related limit values are determined in consideration of the following. The time limit is a threshold value that correlates with gas usage, temperature, and so on. That is, in the case of the high temperature limit, a fire alarm is generated if it is maintained above the high temperature limit value for a predetermined time, and if the low temperature limit is exceeded, the alarm (information) will be. The same is true for information on gas consumption. In addition, the limit value for the duration of gas free service shall be set differently according to the type of industry / use.

By analyzing the gas usage amount information over time, various related additional information and alarms can be generated. The flow chart of FIG. 4 shows a process of generating additional information and generating an alarm using the gas usage amount and time information.

The additional information calculation / extraction unit 24 receives the gas consumption measured by the gas usage volume measurement unit 12 in real time (S30). At the same time, information on the current time is provided from the timer 26 (step S32). Then, the amount of gas used over time is compared with an upper limit (e.g., upper limit of flow) and a lower limit (e.g., lower limit of flow) according to various criteria (step S36).

As a result of comparison, when the upper limit value is exceeded (step S42) or the lower limit value is exceeded (step S40), a predetermined alarm is generated to be generated when the upper limit value or the lower limit value is exceeded (step S44). The generated alarm is transmitted to the control device 50 through the communication unit 30 (S46).

If it is determined in step S36 that the gas usage measurement value does not deviate from the upper limit value and the lower limit value and is determined to be within the normal range (step S38), the procedure repeats step S36 again after receiving the gas usage amount and current time information again.

It will be appreciated by those skilled in the art that other types of additional information can be generated and a method for generating an alarm can be made without difficulty based on the description of the generation of the additional information and the method of generating the alarm as described above. For example, when information on the amount of gas used and the usage is generated, a change in the gas use flow rate is observed to determine whether or not to use the heating / cooking / cooling application and the use time. It is also possible to generate information on the cooking time and the cooking / cooling / heating efficiency by observing the temperature change. This information is more preferably generated by the control device 50, but it can also be generated by the remote meter reading terminal 10.

Next, additional information that can be generated by the additional information generation unit 70 of the control device 50 will be described. Basically, the same information (fire generation, room temperature over temperature, gas leakage check request, user information abnormality abnormality confirmation request, etc.) substantially the same as the additional information that can be generated by the above-mentioned remote meter reading terminal 10 is transmitted to the control device 50 Can also be generated. Therefore, it may be determined whether the remote meter terminal 10 or the control unit 50 generates the data in terms of urgency of the case, data traffic burden, efficient operation of the control system 100, or the like. It is preferable that the emergency meter terminal 10 generates an urgent alarm that is directly related to the safety of the user.

In order to generate the additional information, the control device 50 receives the gas usage amount information, the gas temperature information, the gas pressure information, the living environment of the user's living area (from time to time) from the remote meter reading terminals 10 via the communication section 55 Temperature (room temperature), and the like, and is also provided with the additional information generated by the remote meter terminal 10. The control device 50 receives the following social information as basic information for various analyzes through the information input unit 65: information on the use area, type / sales information, information on the family member, information on the gas supply unit price, Usage / Capacity (Heating / Cooling / Cooking / Sales), Used Gas Equipment Information (Including Usage per Unit), Cooling / Heating Area Information.

It is desirable that the control device 50 generate additional information that does not require urgency, such as additional information related to observation and prediction by the use of gas and social information. Examples are listed in the table below.

Warning
Kinds Alarm History How to create gas
Leakage (2) Generated when the difference between the supply flow rate and the used flow rate exceeds the tolerance Available in the control system gas
Leakage (3) If the 'specific terminal gas pressure' is particularly low among the various terminals branched from the same supply line Available in the control system Gas supply abnormality Generated when 'terminal gas pressure' is lower than atmospheric pressure Available in the control system Supply Management Information Information Gas supply pressure Optimization of the gas pressure at the feed stage As a result of pipe network analysis, the facilities required for pressurization and operation cost savings Gas supply piping Optimizing gas supply piping design As a result of pipe network analysis, unnecessary excessive size piping is prevented. Gas supply plan Prediction of consumption by sector, region, consumer characteristics, time / season Analysis of gas usage changes to prevent unnecessarily excessive piping Gas supply price Difference in gas price according to demand by time Analysis of gas consumption change

First, when the difference between the supply flow rate of the gas and the sum of the flow rate used exceeds the allowable error, it is suspected that the gas leakage occurs somewhere, so that an alarm of gas leakage is generated. Further, even when a gas pressure of a particular terminal is detected to be particularly low among a plurality of remote meter reading terminals 10 installed in various gas piping branched from the same supply pipe, a gas leakage alarm is generated because a gas leakage is suspected.

If the gas pressure measured by the remote meter reading terminal 10 is lower than the atmospheric pressure, it may be suspected that an abnormality has occurred in the gas supply, so that a gas supply abnormality alarm is generated.

In addition, the following additional information may be generated and, if necessary, alerted to the relevant party's communication terminal 90: (i) usage statistics by user, date, time, Information on the use time of the gas appliance such as each user's cooling / heating / cooking; (ii) observation of changes in room temperature (or gas temperature) by user, region, and time; (iii) Analyze the correlation between the gas usage / use time and the room temperature (or gas temperature) by user / region (especially during winter), and provide the analysis result to the user. And if there is a specific tendency, the cause (heating / insulation structure abnormality, etc.) identification recommendation occurrence; (iv) generate a low temperature or high temperature alarm for a user in the same geographic / residential environment when the temperature of some of the users is particularly cold or hot; (v) Forecasting usage by user, date, and time; (vi) occurrence of recommendation for cause identification if there are many differences between users and forecasts; (vii) Gas consumption by region and single family (age group); (viii) calculating gas consumption by region, industry and sales; (ix) Statistics and forecasts of changes in usage and usage of gas by region, industry type, sales, 24 hours, monthly / season according to user characteristics (use / region / industry type / area, etc.); (x) Prediction of gas usage by region, industry, sales, 24 hours, monthly / seasonal; (xi) Observation of changes in gas usage by user and specific group according to city gas price hikes; (xii) Statistics and forecasts on changes in gas usage by user and by specific group, with changes in city gas rates.

The control device 50 also generates and provides various kinds of information required by the remote meter terminal 10 (limit temperature / limit time / limit flow rate, etc.).

(4) Pipe network analysis

On the other hand, the controller 50 realizes the analysis of the city gas pipeline network from the flow rate and gas pressure data by region / time, and utilizes the pipeline network maintenance (including leakage), extension, and new construction. That is, the additional information generating unit 70 of the control apparatus 50 also performs the pipe network analysis in real time to obtain necessary information in various manners. For example, fluid flow and gas pressure data can be analyzed hydrodynamically (Bernoulli's theorem) to optimize piping maintenance, supply pressure optimization (energy savings and extended piping life), etc. , The extension of the partial pipe (new consumer), and the change (replacement), the effect can be predicted and the optimal design can be derived. It also provides a number of references when performing overall piping design in other areas. These tasks can be performed in real time. And can be sufficiently carried out as a basic facility according to the present invention without additional investment.

The simplest example of a pipe network analysis is that if the gas pressure falls below the reference value, the pressure on the supply side must be increased immediately. If the gas pressure is maintained, . In some cases, the gas supply is stopped because the gas pressure is actually low. Therefore, the simplest interpretation of the pipe network is the relationship between flow velocity and pressure. The pressures are 'supply pressure at the beginning of the supply', 'pressure loss at the pipe' and 'discharge pressure at the end'. If the discharge pressure is lower than the atmospheric pressure, the gas can not be used. And 'pressure loss in piping' is a function relation (simple increase function) with 'gas flow'. The flow rate of the gas is determined by dividing the flow rate by the pipe sectional area. Therefore, it can be seen that if the pressure loss continues to be large, the piping in the area should be replaced with a larger one. If the pressure loss is too large, it can be judged that there is a possibility of leakage to the piping.

A simple example of pipe network analysis will be described with reference to Fig. 6 shows an example of pipe network analysis for two users, but the same principle is applied even when the number of users and the bifurcation point is sufficiently large.

The basic equations used for the pipe network analysis are classified into two categories: the conservation of material (continuous) law and the conservation of momentum and energy. First, the following equation can be established according to the law of conservation of matter (continuous).

Q _S = Q _A + Q _B - (3)

Q _S = ρ _S ⋅ V _S ⋅ S _S - (4)

Q _A = ρ _A揃 V _A揃 S _A - (4)

Q _B =? _B ? V _B ? S _B - (6)

Here, the subscripts ' _S ', ' _A ', and ' _B ' represent the gas supplier region, the user A region, and the user B region, respectively. (Q _S , Q _A , and Q _B represent mass flow rates in the gas supplier area, the user A area, and the user B area, respectively, and the other items are displayed in the same manner) Gas flow rate (m / sec), that is, line speed, and S represents the cross-sectional area of the pipe. ρ is the density of the gas (kg / m 3), which is a function of 'temperature (T) and gas composition'.

Next, the equations that can be established based on momentum and energy conservation laws are as follows.

(P _S + (1/2) ρ _S揃 V _S ² + ρ _S揃 g 揃 h _S ) - (P _A + (1/2) ρ _A揃 V _A ² + ρ _A揃 g 揃 h _A ) = P _{f, S} + P _{f, A} - (7)

(P _S + (1/2) and ρ _S and V _S + ρ ² _S and g and _{h S) - (P B +} (1/2) and ρ _B and V _S ² + ρ _B and g and h _B ) = P _{f, S} + P _{f, B} - (8)

P _{f, S} = Φ (L _S , S _S , V _S , k _S ) - (9)

_{P f, A = Ф (L} A, S A, V A, k A) - (10)

P _{f, B} =? (L _B , S _B , V _B , k _B ) - (11)

(Where P _S , P _A , and P _B represent the gas pressure in the gas supplier region, the user A region, and the user B region, respectively), P _f represents the pressure loss _{f, S} , _{Pf, A} , _{Pf, and B} represent the pressure loss in the gas supplier area, the user area A, and the user area B, respectively. L is the length of the pipe. h represents the height of the target point (of measurement or calculation) in the pipe. However, because the gas is gas, the value of the term 'ρ · g · h' is very small compared to the other term, so this term can be ignored. g represents gravitational acceleration (9.8 m / sec ² ). The above function Φ is a simple increase function, and there is a theoretical equation or an empirical formula. k is the material and roughness of the pipe and is usually treated the same.

There is also data to be measured or input for pipe network analysis. The measurement data are temperature, pressure, flow rate, and flow rate of the supplier, user_A, and user_B. Here, the temperature, pressure, and flow rate are obtained by directly using the gas temperature, gas pressure, and gas volume usage information measured by the remote meter reading terminal 10, and the flow rate is calculated by dividing the flow rate by the volume. However, the pressure (P _A , P _B ) of the user may not be measured according to the purpose or situation but may be calculated using the equations (7) to (11). Input data are pipe length, height, cross-sectional area, and density for supplier, user_A, user_B. However, density may be calculated from temperature, pressure, and gas composition without being directly input.

An example of the secondary information that can be grasped by interpreting the above data is as follows. The following secondary information is an example, and more types of secondary information can be processed.

( _A ) When Q _S <Q _A + Q _B , an alarm is generated to indicate that gas leakage has occurred in the piping.

(B) If the pressure (P _A or P _B ) is lower than the atmospheric pressure (P ₀ ), the gas can not flow out from the user A or the user B, that is, the gas can not be used. Or generate an alarm to increase the supply pressure.

(C) pressure drop (P _{f, S,} or P _{f, A} or P _{f, B)} is large, the diameter of the pipe (S _S or S _A or S _B) to replace large, or the feed pressure (P _S) to And generates an alarm notifying that it needs to be increased.

(D) according to the two users, (L _A> L _B) and, if the case where (S _A = S _B) and _{(P f, A <P f} , B), P A is lower than the atmospheric pressure, P _B is It is undoubtedly lower than the atmospheric pressure (P ₀ ), thus generating an alarm indicating that there is a need for piping replacement. _{Here, (P f, A <P} f, B) the confirmation method (P _S, P _A, P _B) the direct measurement _{or, P f, A = Ф (} L A, S A, V A) and P _{f, and B} = L ( _B , S _B , V _B ).

(E) _{(f P, A} <P _{f, B)} in the (P _A <P _B) If so, you may be suspected that there is leakage in the pipe between the branch point and user _A taking place when an alarm is generated indicating this. _{Here, (P f, A <P} f, B) the confirmation method (P _S, P _A, P _B) the direct measurement _{or, P f, A = Ф (} L A, S A, V A) and P _{f, and B} = L ( _B , S _B , V _B ).

(P _{f, S} + P _{f, A} 'or P _{f, S} + P _{f, B} ') of the pipe calculated from the equation (7) or (8) Is less than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated by the pressure sensor 11, And generates an alarm notifying this.

( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') of the pipe calculated from the equation (7) or (8) Is more than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated by the pressure sensor 11, And generates an alarm notifying this.

(A) If the pressure loss (' _{Pf, S} + _{Pf, A} ' or ' _{Pf, S} + _{Pf, B} ') decreases without any special reason (increase in flow rate or significant increase in temperature) The user may be suspicious of the &quot; leak &quot;

If the pressure loss (' _{Pf, S} + _{Pf, A} ' or ' _{Pf, S} + _{Pf, B} ') increases without a special reason (increase in flow rate or a significant increase in temperature) Clogging &quot; of the &quot; clog &quot;

(Car) When designing a new facility in the same or similar environment of use environment, the acquired information (diameter of the proper pipe, supply pressure, etc.) is utilized.

The present invention can be used for comprehensive service of remote meter reading of city gas and correction of error of gas consumption, user's living situation, control and alarm about living environment, prediction, statistics, and pipe network analysis.

10: Remote meter reading terminal 12: Gas usage volume side information
14: gas temperature measuring part 16: gas pressure measuring part
18: Environmental temperature measuring unit 20: Operation control unit
22: correction volume calculation unit 24: additional information calculation /
26: timer 30: communication unit
40: communication network 42: wireless telephone modem
44: wireless telephone system 46: wired / wireless Internet router
48: Internet 50: Control computer device (control device)
55: communication unit 60: calculation control unit
65: Information input unit 70:
75: Information output unit 80: Database unit
85: wireless telephone network 90: information receiver communication terminal (cellular phone, computer device)

Claims (11)

A remote monitoring terminal installed for each gas meter of the user and a control system for controlling the use of gas including a control computing device communicably connected to the remote meter terminals via a communication network, A method for performing multiple operations, the method comprising:
(1) measuring gas-related basic information including at least one of a gas usage amount, a gas temperature and a living environment temperature with time, and gas pressure information of each remote meter-reading terminal installed in a user's gas meter;
(2) (i) The gas temperature or the living environment temperature measured by each remote meter reading terminal may be measured in a state where high temperature damage may occur, a situation where cold weather may occur, a situation where a fire may occur, (Ii) determining at least one of the temperature-related living situations by comparing the measured temperature with a threshold temperature value set for at least one of the 'temperature related living situations' (Hereinafter referred to as a "life abnormal situation") in which the use of the gas according to the gas consumption is stopped for a predetermined period of time, (Hereinafter referred to as a "gas appliance inspection situation"), and a situation where a gas leak is detected and it is necessary to check whether or not the gas leakage occurs (Hereinafter, referred to as a &quot; gas leakage situation &quot;), and at least one of the living conditions related to the gas consumption amount is determined One of which is performed at each remote meter terminal;
(3) In each remote meter-reading terminal, information on the living conditions generated when it is determined that at least one of the temperature-related living conditions and the gas consumption-related living conditions has occurred is transmitted to the control-use computing device through a communication network ; And
(4) In the control computing device, when information on the generated living situation transmitted by the remote meter terminal is received, an alarm about the generated living situation is transmitted to the communication terminal of the related party in the generated living situation The method comprising the steps of: (a) providing a local intelligence service for a city gas error correction service and a life safety complex intelligence service service method. The method as claimed in claim 1, further comprising: transmitting the gas-related basic information measured by each remote meter-reading terminal to the control-use computing device; Information on the gas use area, information on the gas use industry, information on the family members of the user, information on the gas supply unit price, information on the use of the gas, information on the gas use appliance Providing information on at least some of the information about the type of the air conditioner and the amount of gas used by the device, and information about the air conditioner and the heating area to the control computer device; In the control computer device, macroscopic additional information (situation grasp, statistics and prediction) for each of a plurality of gas users by region and group is generated by the combination of the gas related basic information and the social information or each of these pieces of information The method further comprising the steps of: (a) receiving a service request from a service provider; 3. The method according to claim 2, wherein the macroscopic additional information for each region and the group includes at least one of (i) usage statistics by user, date, and time, information for each user's usage (information on flow rate and usage time) Information on the time of gas appliance use such as heating / cooking; (ii) observation of changes in room temperature (or gas temperature) by user, region, and time; (iii) Analyze the correlation between the gas usage / use time and the room temperature (or gas temperature) by user / region (especially during winter), and provide the analysis result to the user. And if there is a specific tendency, the cause (heating / insulation structure abnormality, etc.) identification recommendation occurrence; (iv) generate a low temperature or high temperature alarm for a user in the same geographical / residential environment when the temperature of some of the users is particularly cold or hot; (v) Forecasting usage by user, date, and time; (vi) occurrence of recommendation for cause identification if there are many differences between users and forecasts; (vii) Gas consumption by region and single family (age group); (viii) calculating gas consumption by region, industry and sales; (ix) Statistics and forecasts of changes in usage and usage of gas by region, industry type, sales, 24 hours, monthly / season according to user characteristics (use / region / industry type / area, etc.); (x) Prediction of gas usage by region, industry, sales, 24 hours, monthly / seasonal; (xi) Observation of changes in gas usage by user and specific group according to city gas price hikes; (xii) information on the statistical and predictive information on the change in the gas consumption amount per user and the specific group according to the change in the city gas rate, and Service method. The method according to claim 2 or 3, further comprising the step of, in the control computer apparatus, transmitting a notice or an alarm to the communication terminal of the relevant party based on the content of the new additional information Error checking service remote meter reading and life safety complex intelligent control service method. 2. The method according to claim 1, further comprising: generating a 'life alarm' when an abnormality has occurred in the user's personal information when the gas is not used for the first predetermined time or longer, ', The' gas appliance check 'alarm is generated from the fact that there is an abnormality in the gas appliance, and when the continuous gas consumption amount for the third predetermined time or more exceeds 0, A gas leak check alarm is generated based on the fact that there is a leakage. The method according to claim 1, wherein the threshold temperature value set for each temperature-related living situation and the threshold value set for each gas consumption-related living situation are (i) (ii) the remote meter terminal itself calculates or determines a predetermined logic in consideration of an average value during a predetermined period or an average value according to a season and a time; And the monitoring device is obtained by any one of the methods provided to the remote meter reading terminal. The control apparatus according to claim 1, wherein, in each of the remote meter-reading terminals or in the control apparatus provided with the measured gas-related basic information from each of the remote meter-reading terminals, the temperature deviation between the reference temperature and the measured gas temperature, And calculating a gas volume usage corrected by applying the calculated gas volume error to at least one of the gas volume usage amount and the gas volume usage amount, METHOD AND LIFE SAFETY COMPLEX INTELLIGENT CONTROL SERVICE METHOD. 8. The method according to claim 7, wherein the real time city gas unit calorific value [MJ / Nm ³ ] at a time before the supply delay time [unit time] of the city gas to the error corrected gas volume usage collected in real- And calculating a city gas calorific value correction amount [MJ / unit time] by multiplying the city gas calorific value correction amount and the urban gas calorific value correction amount by a predetermined value. The method of claim 1, further comprising the steps of: erecting the gas in the space defined by the substance conservation (continuous) law, using temperature, pressure, mass flow rate, flow rate, pipe length, height, cross- It is preferable to further include a step of analyzing the city gas pipeline using the following equations (A1) to (A4) and the following equations (B1) to (B5) that can be established based on the momentum and energy conservation laws .
Q _S = Q _A + Q _B - (A1)
Q _S =? _S ? V _S ? S _S - (A2)
Q _A = ρ _A揃 V _A揃 S _A - (A3)
Q _B =? _B ? V _B ? S _B - (A4)
Here, subscripts ' _S ', ' _A ', and ' _B ' respectively denote a gas supplier region, a user A region, and a user B region, Q denotes a mass flow rate, V denotes a gas flow rate (m / sec) , S represents the cross-sectional area of the pipe, ρ represents the density (kg / m 3) of the gas,
(P _S + (1/2) ρ _S揃 V _S ² + ρ _S揃 g 揃 h _S ) - (P _A + (1/2) ρ _A揃 V _A ² + ρ _A揃 g 揃 h _A ) = P _{f, S} + P _{f, A} - (B1)
(P _S + (1/2) and ρ _S and V _S + ρ ² _S and g and _{h S) - (P B +} (1/2) and ρ _B and V _S ² + ρ _B and g and h _B ) = P _{f, S} + P _{f, B} - (B2)
P _{f, S} = Φ (L _S , S _S , V _S , k _S ) - (B 3)
_{P f, A = Ф (L} A, S A, V A, k A) - (B4)
P _{f, B} = Φ (L _B , S _B , V _B , k _B ) - (B 5)
Where p represents the gas pressure, P _f represents the pressure loss, L represents the length of the pipe, h represents the height of the target point in the pipe for measurement or calculation, g represents the acceleration of gravity (9.8 m / sec ² ), The function Φ is a simple increase function, and k is the material and roughness of the pipe. 10. The method as claimed in claim 9, further comprising the step of performing at least one of the following pipe network interpretation and warning measures in the control computer apparatus: Intelligent control service method:
( _A ) if Q _S <Q _A + Q _B , generate an alarm indicating that a gas leak has occurred in the piping;
(B) If the pressure (P _A or P _B ) is lower than the atmospheric pressure (P ₀ ), gas can not flow out from the user A or user B piping, Or to generate an alarm to increase the supply pressure;
(C) pressure drop (P _{f, S,} or P _{f, A} or P _{f, B)} is large, the diameter of the pipe (S _S or S _A or S _B) to replace large, or the feed pressure (P _S) to Generating an alert indicating that it needs to be increased;
(D) P _A is lower than the atmospheric pressure, and P _B is the atmospheric pressure (P) when the two users A and B have L _A > L _B and S _A = S _B and P _{f and A} P _{f, 0} ), thereby generating an alarm indicating that there is a need to replace the pipe. _{Here, P f, A <P f} , how to determine _B is P _S, P _A, direct measurement of P _{B or, P f, A = Ф (} L A, S A, V A) and P _{f, B} = Φ (L _B , S _B , V _B );
(E) If P _A <P _{f, B} , then if P _A <P _B , generate an alarm to notify that there is a leak in the pipe between the branch point and user_A. _{Here, (P f, A <P} f, B) the confirmation method (P _S, P _A, P _B) the direct measurement _{or, P f, A = Ф (} L A, S A, V A) and P _{f, B} =? (L _B , S _B , V _B );
( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') of the pipe calculated from the formula (B1) or (B2) Is less than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated from the pressure drop B5, Generating an alarm notifying it;
( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') of the pipe calculated from the equation (B1) or (B2) Is more than the pressure loss ( _{Pf, S} + _{Pf, A} 'or _{Pf, S} + _{Pf, B} ') calculated from the pressure drop B5, Generating an alarm notifying it;
(A) If the pressure loss ' _{Pf, S} + _{Pf, A} ' or ' _{Pf, S} + _{Pf, B} ' decreases without any special reason such as increase in flow rate or a significant increase in temperature _, ', So creating an alert to notify it; And
If the pressure loss 'P _{f, S} + P _{f, A} ' or 'P _{f, S} + P _{f, B} ' increases without a specific reason such as an increase in flow rate or a significant increase in temperature _, 'So you can create an alert that notifies you of it. Remote meter reading terminals installed for each gas meter of a user; And
And a controller for communicating with the remote meter terminals via a communication network,
Each of the remote meter terminals measures gas-related basic information including at least one of a gas consumption amount, a gas temperature and a living environment temperature with time, and gas pressure information; (i) the measured gas temperature or the living environment temperature must be at least one of the following: a condition where high temperature damage may occur, a situation where cold weather may occur, a situation where a fire may occur, Related living conditions', and judging whether at least one of the temperature-related living conditions has occurred, and (ii) comparing the measured gas usage with the measured temperature-related living conditions for a predetermined period of time (Hereinafter, referred to as a 'life abnormal situation') and a gas appliance failure can be regarded as a situation where an abnormality has occurred in the user's personal information (Hereinafter, referred to as a "gas leakage situation") in which a gas leakage can be regarded as occurring, Do fingers gas amount-related value as compared with the flow rate limit set by living conditions, at least any one of: determining whether to at least any one of the gas consumption occurs, and relevant living conditions; And information on a living situation generated when at least one of the temperature-related living conditions and the gas consumption-related living conditions is determined to be generated is transmitted to the administrative computing device through a communication network,
The control computing device, when receiving information on the generated living situation transmitted by the remote meter terminal, transmits an alarm related to the generated living situation to the communication terminal of the relevant party in the generated living situation Urban Gas Error Correction Remote meter reading and life safety combined intelligent control service system.

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