JP2008190917A - Gas meter abnormality detection method, gas meter reading terminal, and gas meter abnormality detection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas meter abnormality detection method, a gas meter reading terminal, and a gas meter abnormality detection system capable of performing easily safety check of a gas using environment by informing a gas checking person of abnormal data generated from a gas meter precisely when reading the gas meter at a place where the gas meter is installed. <P>SOLUTION: The gas meter reading terminal for collecting gas meter reading data is equipped with a transmission/reception means for transferring data with a gas meter data collection device for collecting gas meter data, to thereby collect abnormal data generated from the gas meter when reading the gas meter. The gas meter reading terminal is also equipped with an analysis means of the abnormal data, to thereby analyze the acquired abnormal data. The gas meter reading terminal is further equipped with an output means, to thereby output the acquired abnormal data and/or the analysis result. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas meter abnormality detection method, a gas meter meter reading terminal, and a gas meter abnormality detection system, and more specifically, meter reading data and security data from a gas meter having a predetermined security function via a data collection device. A meter-reading terminal that is obtained by a portable meter-reading terminal and analyzes security data at the meter-reading terminal, a gas meter abnormality detection method that supports the maintenance of a safe gas use environment by a meter-reader using the meter-reading terminal, and the meter-reading terminal The present invention relates to a gas meter abnormality detection system used.

Propane gas, unlike city gas, is sold to general consumers through regional dealers. Currently, there are about 20,000 dealers nationwide, and most of them are small and medium-sized dealers. Many of these stores carry out various tasks such as cultivating customers, exchanging gas cylinders, visual inspection of equipment, meter reading of gas meters, and collecting fees, etc., and daily operations are extremely complicated. It has become. During the above work, regarding the meter reading directly related to billing, a method has been proposed in which the meter reading value of the LP gas meter installed for each gas consumer has been obtained using electromagnetic induction in the vicinity of the gas meter. By eliminating this, it is possible to eliminate the accounting error and simultaneously reduce the time required for meter reading (see Patent Document 1). However, no security data has been acquired.
JP-A-5-101293

By the way, because the specific gravity of propane gas is heavier than that of air, if gas leaks, the gas accumulates under the floor and leads to a major accident if ignited.Therefore, safety management of gas is very important. Therefore, gas meters with built-in microcomputers that detect gas abnormalities with gas meters, commonly known as microcomputer meters, are becoming widely used. Then, using the communication function with the communication line attached to the microcomputer meter, not only conventional meter reading work but also security management of the gas usage environment is performed on the center side. (See Patent Document 2)
Japanese Unexamined Patent Publication No. 1-194440

  As mentioned above, centralized management of abnormal information on the gas usage environment generated from meter readings and gas meters to check gas usage can reduce the labor required for meter reading and security, thereby reducing the costs associated with gas sales. It is preferable from the viewpoint of reduction. However, even if abnormal information is collected at the center, the response after the abnormal information is detected must be relied on manually, and there is a time gap between the acquisition of the abnormal information and the response to the abnormality There is.

  As for the safe usage environment of propane gas, the outdoor equipment shown in FIG. 10 is responsible for the gas supply company, and the indoor equipment is the responsibility of the user. As shown in FIG. An abnormal warning function is also provided. However, it is usually impossible to expect gas users in the house to constantly monitor the abnormal information displayed on the gas meter outdoors, and some users with poor knowledge of gas such as elderly people Because there are many, it is not realistic to make gas users have an overloaded task of establishing a safe environment for using gas.

  In addition, since the gas meter is not always installed in a place that is easy to see from the outside, there is also a problem that the meter reader misses the abnormality information displayed on the gas meter. Furthermore, there is a fact that gas meter readers are not always experienced people. Based on the above, it is desirable to provide a mechanism that allows gas providers to easily create a safe gas use environment.

  By using the technique proposed in Patent Document 1, it is possible to know the integrated value of the amount of propane gas used at the metering terminal shown in FIG. 8, but this terminal cannot acquire data relating to gas meter abnormality, The meter reader is not expected to respond to the abnormality. In addition, if the technology proposed in Patent Document 2 is used, it is possible to obtain data related to gas meter abnormality centrally at the information center shown in FIG. The response is limited, and it is necessary to dispatch people to the site, so it is not possible to respond immediately to local problems. In addition, safety management that relies on data related to gas meter abnormality from the gas meter is a subsequent response after the occurrence of data related to the gas meter abnormality, so that a problem remains from the viewpoint of accident prevention. Here, the gas meter abnormality refers to the state of the gas meter that has detected an abnormality relating to the safety of the gas usage environment.

  In some gas meters, even when an abnormality occurs in the gas meter that does not cause gas shut-off, as shown in FIG. For this display, it is necessary to confirm the warning display at a frequency of once or more in February. However, since most gas meters are battery-driven without receiving power supply from AC wiring, the power consumed for display is a big problem for the battery life. If the power for display is reduced, the brightness or contrast of the display is reduced, and it is difficult to observe from the outside, and it may be difficult to accurately recognize the warning display particularly in a place exposed to external light.

  The present invention has been made in view of such circumstances, and an object of the present invention is to accurately acquire data relating to gas meter abnormality from the gas meter at a place where the gas meter is installed, and to deal with abnormal conditions in the gas usage environment. Gas meter abnormality detection that supports the construction of a safer gas usage environment by preparing a safe and secure gas usage environment and checking the gas usage environment in the user's home if the gas user desires A method, a gas meter reading terminal, and a gas meter abnormality detection system are provided.

  The invention of the gas meter abnormality detection method according to claim 1, which has been made to solve the above problems, includes security data including gas meter abnormality data at the time of collecting the previous meter reading data in a gas meter reading terminal for collecting meter reading data of the gas meter. , Collecting the security data collected, and outputting the analysis result obtained by the analysis. Here, the gas meter abnormality data refers to data generated by the gas meter that has detected an abnormality, and the security data refers to time-lapse data including gas meter abnormality data and information related to whether or not a gas meter abnormality has occurred.

  According to the invention of the gas meter abnormality detection method described in claim 1, the gas metering terminal that collects the meter reading data of the gas meter is caused to collect the security data when collecting the meter reading data in the previous period, and analyze the collected security data. Because the analysis result obtained by the above analysis is output, the gas meter can easily know the abnormality of the gas meter, and the abnormality information displayed on the gas meter that has not been sufficiently utilized in the past is periodically detected at the time of meter reading. Since the check is surely performed via the meter-reading terminal, the above-described problem is easily solved.

  The invention of the gas meter metering terminal according to claim 2, which has been made to solve the above-described problems, is such that the gas meter metering terminal issues a meter reading data request to data collecting means for collecting meter meter data and security data of the gas meter. A transmitting means for transmitting; a receiving means for receiving the meter reading data and the security data transmitted from the data collection device in response to the meter reading data request; and an analysis for security inspection by analyzing the received security data. It is characterized by comprising analysis means for obtaining a result, and output means for outputting the security data and / or the analysis result.

  According to the invention of the gas meter metering terminal recited in claim 2, the gas meter metering terminal transmits a meter reading data request to a data collecting unit for collecting meter meter data and security data of the gas meter, and the meter reading A receiving means for receiving the meter reading data and the security data transmitted from the data collection device in response to a data request; an analyzing means for analyzing the received security data and obtaining an analysis result for security inspection; Output means for outputting the security data and / or the analysis result, and by sending a gas meter data transmission request to the data collection means, the security data of the gas meter taken into the data collection means is obtained. It will receive, analyze the received security data and output the result, meter reader It can be easily performed compared with the conventional the security check using its output.

  In order to solve the above problems, the invention of the gas meter metering terminal according to claim 3 is characterized in that, in the gas meter metering terminal according to claim 2, the output means of the gas meter metering terminal includes the security data and / or The display device displays the analysis result.

  According to the invention of the gas meter metering terminal described in claim 3, in the gas meter metering terminal according to claim 2, the output means of the gas meter metering terminal displays the security data and / or the analysis result. Since it is an apparatus, it can display much easier to see than the display on the housing of a conventional gas meter.

  In order to solve the above problems, the invention of the gas meter metering terminal according to claim 4 is characterized in that, in the gas meter metering terminal according to claim 2 or 3, the security data and / or the analysis result is centered. It is characterized by providing reporting means for reporting to.

  According to the invention of the gas meter meter reading terminal described in claim 4, in the gas meter meter reading terminal according to claim 2 or 3, the gas meter meter reading terminal further comprises reporting means for reporting the security data and / or the analysis result to a center. Therefore, a gas meter of a customer who has not been able to centrally manage gas meter data because it is not connected to a communication line can be centrally managed through a meter reading terminal brought by a meter reader. Further, the reporting means is shared by a plurality of gas meters, and there is a merit in terms of cost compared to providing the reporting means for each gas meter.

  The invention of the gas meter metering terminal according to claim 5, which has been made in order to solve the above problems, is the gas meter metering terminal according to any one of claims 2 to 4, wherein the collected data of the data collecting device is It contains message data of a visit request.

  According to the invention of the gas meter meter reading terminal described in claim 5, in the gas meter meter reading terminal according to any one of claims 2 to 4, message data desired to be visited is included in the collected data of the data collecting device. Therefore, the gas meter reader can be surely communicated with the gas user the desire to visit the gas meter.

  The invention of the abnormality detection system according to claim 6, which has been made to solve the above-described problems, includes a gas meter that detects an abnormality in a gas use environment and generates security data, and is connected to the gas meter to obtain data. In the gas meter abnormality detection system provided with the data collection device to acquire, and the meter-reading terminal which communicates with the data collection device and acquires data, the meter-reading terminal according to any one of claims 2 to 5 It is a meter reading terminal.

  According to the invention of the gas meter meter reading terminal described in claim 6, a gas meter that detects an abnormality in a gas use environment and generates security data, a data collection device that is connected to the gas meter and acquires data, and In the gas meter abnormality detection system provided with a meter reading terminal that communicates with the data collection device and acquires data, the meter reading terminal is the meter reading terminal according to any one of claims 2 to 5, A gas meter, a data collection device, and a gas meter reading terminal are combined organically, and a gas safety check can be efficiently advanced.

  As described above, according to the embodiment of the present invention, the gas meter reading staff periodically checks the gas usage status with reference to the abnormal data from the gas meter, so that the safety of the gas usage environment is ensured. Will greatly enhance the nature. For gas users, it is difficult to notice a gas abnormality that does not cause gas interruption, but according to the present invention, security data is collected in the gas metering terminal, so there is also a gas meter abnormality that does not result in gas interruption. Can be recognized reliably. In particular, when security data has been centrally managed at the center in the past, the response is taken after sensing abnormal data, but according to the present invention, the meter reader periodically changes the gas usage environment during meter reading. Since this will be a check, the accident prevention effect is great.In addition, the gas meter reader performs the check based on the analysis result of the gas meter abnormality data by the gas meter terminal, so the emphasis on the part related to the occurrence of the gas meter abnormality data Can be checked. In addition, since countermeasures are displayed as necessary, even those who have advanced training or do not have deep knowledge can be placed as gas meter readers, making it easier to ensure the safety of the gas usage environment. .

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a system configuration diagram showing an embodiment of a system according to the present invention, in which data is acquired wirelessly from a gas meter that generates security data via a data collection device to a meter-reading terminal for data analysis. This is done at the meter reading terminal. And the result is displayed on the display part of the terminal for meter-reading, and a meter meter abnormality can be reported to a meter-reading person.

  In the system shown in FIG. 2, a home switch is attached to the home of the gas user who indicates that he / she wishes to visit the meter reader, and the meter reader visits the home of the home where the gas meter is installed. By switching on the home switch when desired, a message to visit is displayed on the meter reading terminal via the data collection device, so the meter reader visits the user's home that he / she wanted to visit at the time of meter reading and uses it Consultation on gas use from the people, and if necessary, perform safety checks of gas appliances in the house.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 3 shows a gas meter having various sensors and capable of generating security data. In FIG. 3, the gas meter includes a microcomputer (also referred to simply as a microcomputer), an operation unit, a display unit, a pressure sensor, a flow sensor, a seismic sensor, an I / O port memory, and an electromagnetic shut-off valve. Composed. These operation unit, display unit, pressure sensor, flow rate sensor, seismic sensor, and I / O port are connected to the microcomputer via an interface (not shown). Further, the electromagnetic shut-off valve is connected to the microcomputer via a shut-off valve driving unit (not shown).

  The microcomputer includes a CPU and a memory. The CPU executes basic control, flow rate and pressure detection, battery voltage check, and control related to this embodiment described later according to a control program stored in a ROM in the memory. The ROM stores in advance a basic control program, a control program for flow rate detection, integrated flow rate calculation and pressure detection, a program for battery voltage check, a control program related to this embodiment described later, and the like. The RAM in the memory basically functions as a working area for temporarily storing variables and data generated in the course of processing performed by the CPU.

  The operation unit is composed of a switch group for inputting a command to start or end the gas meter, stop an abnormality alarm, or change the display on the display unit. These commands are input to the microcomputer when the operation unit is manually operated.

  The display unit receives a command from the microcomputer via the interface, and in response to this, displays an accumulated flow rate, and displays various abnormality alarms such as vibration, gas leak, and battery voltage drop. The LEDs included in the display unit are composed of a plurality of elements, and different types of alarms can be displayed by changing the combination of these light emission. For example, when the electromagnetic shut-off valve is in a closed state, all the elements blink at a predetermined cycle.

  The generation of security data in the gas meter will be described. As the flow rate sensor, a membrane type or ultrasonic sensor disposed in the gas flow path is used.

  In the case of an ultrasonic sensor, as is well known, the flow velocity and flow rate of gas passing through the gas flow path are calculated based on the arrival time of ultrasonic signals between the ultrasonic transducers. Abnormalities related to the flow rate can be assumed when the gas flow rate exceeds a predetermined value, or when a minute flow rate is constantly observed even though there is no registration for the use of gas appliances. Data deviating from the use state generates data associated with the occurrence of the gas use state abnormality as the gas meter abnormality data.

  As the pressure sensor, a known pressure detecting element that outputs a voltage corresponding to a pressure value by a gas flow and supplies the voltage to a microcomputer is used. An abnormality related to the gas pressure occurs due to a failure of the gas pressure regulator or a gas leak from a pipe extending from the gas pressure regulator to the gas meter. Gas meter abnormality data is generated when the gas pressure deviates from a predetermined gas pressure beyond a predetermined range.

The seismic sensor is composed of a known seismic element that generates an on / off signal in response to a shake caused by an earthquake or the like and supplies the signal to a microcomputer via an interface. For example, the microcomputer determines the degree of shaking from the number of on / off signals received within a predetermined time, and security data is generated when the seismic sensor detects a shaking exceeding a predetermined value, and this shaking is large. In this case, abnormal processing such as closing control of the shut-off valve is performed, and the operation history of the seismic sensor, that is, the magnitude and time stamp of the seismic sensor are stored in the memory via the CPU as gas meter abnormality data regarding the seismic motion.

  Abnormal data from each of the sensors is dated by a microcomputer, stored as security data in a memory, transmitted to the data collection device in response to a transmission request from the data collection device. The fact that no abnormal data is generated from each sensor for a predetermined period is also stored as security data in the memory and transmitted to the data collection device.

  The I / O port is connected to the I / O port of the data collection device and exchanges data. The connection method may be wired or wireless, and may be performed by a combination of wireless and wired.

  The flash memory in the memory stores the integrated flow rate calculated by the microcomputer, security data, and the like. The data stored here is retained even when the power supply from the battery is stopped. The control program according to the present invention may be stored here. In that case, when the control program is modified, a new control program can be stored via a data collection device and a meter-reading terminal described later. When the meter reading terminal is connected to the center through a public communication network or the like, a new control program can be downloaded via the center.

  The electromagnetic shut-off valve includes a valve drive solenoid coil and is connected to a shut-off valve drive unit (not shown) which is a drive circuit for the solenoid coil. The shut-off valve drive unit is instructed by the microcomputer to generate a solenoid coil drive signal and supply it to the solenoid shut-off valve. In response to this, the electromagnetic shut-off valve is opened or closed to shut off the gas flow path.

  The battery serves as a driving power source for a microcomputer, a shutoff valve driving unit, and the like, and is also used as a power source for displaying the integrated gas flow rate on the display unit. An interface unit (not shown) has a voltage conversion function between the microcomputer and each component connected thereto.

  Next, the data collection device shown in FIG. 4 will be described. The data collection device includes one or a plurality of I / O ports, a memory, a wireless input / output unit, and a battery with a CPU that performs data processing as a center. In the embodiment of FIG. 2, the gas meter and the data collection device are separate housings, but it goes without saying that the data collection device may be built in the gas meter reading terminal.

  When a plurality of I / O ports are provided, data can be exchanged with a plurality of gas meters. In that case, each gas meter has a unique ID, and since the unique ID is added to the data from the gas meter, the data collection device identifies each gas meter and stores the data in the memory. To store.

  The wireless input / output unit is used to receive a request for meter reading data from the meter reading terminal by wireless communication with a meter reading terminal, which will be described later, and transmit the meter meter reading data and security data stored in advance to the meter reading terminal wirelessly. And a battery becomes a power supply source to the component with which the data collection device was equipped.

  Next, the meter reading terminal will be described with reference to FIG. The meter reading terminal shown in FIG. 5 is provided with a memory, an operation unit, a display unit, a wireless input / output unit, an external reporting unit, and a battery for supplying power to the whole, centering on a CPU that performs data processing. Yes.

  The CPU exchanges data with the data collection device via the wireless input / output unit, and exchanges data with the center connected to the public communication network via the external notification means. An instruction to the CPU is given via the operation unit, and is provided with output means for outputting security data and security data analysis results in order to report information to the outside. Specifically, when necessary data is displayed on a display unit such as an LED or LCD, or when a hard copy is required, the data is sent to a gas metering terminal to an internal or external printer to print the data. .

  Here, how the meter reading and the security check of the meter reader are performed using the meter reading terminal will be described with reference to FIG. 6 showing a processing flow of the meter reading terminal. When the meter reader starts the meter reading operation, the operation unit of the meter reading terminal is operated in the vicinity of the data collection device connected to the gas meter in charge, and the signal from the operation unit is sent to the CPU of the meter reading terminal, Step S1 is executed in which the ID of the meter reading terminal, the name of the meter reader, etc. are added as necessary, and a request for meter reading data is sent to the data collecting device via the wireless input / output unit. Data such as the ID of a gas meter to which meter reading data and security data of a gas meter connected to the data collection device are added as necessary from a data collection device that has received a request for meter reading data via a wireless input / output unit At the same time, the data is transmitted to the meter reading terminal via the wireless input / output unit, and the meter reading terminal executes step S2 of receiving meter reading data and security data from the data collecting device.

  Next, the meter reading terminal that has received the security data first checks whether or not abnormal data is received in the security data (S3). Here, when there is abnormal data, step S4 of the abnormal data analysis described below is executed. Since the order of analyzing the security data from each sensor is arbitrary, an example is shown here.

  Abnormal data is transmitted to the meter reading terminal as data indicating abnormality such that the output from various sensors provided in the gas meter exceeds a predetermined range, so the meter reading terminal analyzes the contents of the abnormal data, The result is displayed and reported to the meter reader, and if necessary, countermeasures are displayed (S5) to help the meter reader's security work. In particular, data on gas meter abnormality that does not result in gas shutoff can be output as necessary, and can be used for gas security inspection by a gas meter reader.

  An analysis flow of the abnormal data is shown in FIG. In the embodiment, since the sensors provided in the gas meter are a flow sensor, a pressure sensor, and a seismic sensor, the meter reading terminal sequentially checks the contents of the abnormal data from each sensor, and the cause corresponding to the abnormal data. And measures will be listed from the database stored in the memory of the meter reading terminal. Of course, the cause and countermeasure database corresponding to the abnormal data is placed in the center, and the meter reading terminal may use it through the public communication network.

  In the flow shown in FIG. 7, first, the presence / absence of abnormal data from the flow sensor is determined (S21). If there is abnormal flow data, the contents are further examined. Specifically, when a minute gas flow rate is constantly observed, there is a possibility of a gas leak due to a gas appliance fire. If it does so, the presence or absence of the gas appliance which is consuming gas by the fire and the value check of a gas leak will be listed. In addition, when there is a large increase in gas usage outside the season, it is assumed that the number of family members will increase or that new gas appliances will start to be used. Listed (S22).

  Next, the presence or absence of pressure abnormality is checked (S23). Since the pressure abnormality is mainly assumed to be the abnormal operation of the pressure regulator installed between the gas cylinder and the gas meter, as a countermeasure, the pressure regulator Reconfiguration, replacement, etc. are listed. Further, if the gas regulator is normal, it is conceivable that the remaining amount of gas in the gas cylinder is low, so the gas cylinder check is also listed (S24).

  Next, the presence / absence of seismic anomaly is checked (S25). In the case of seismic anomaly, it is necessary to determine whether it is caused by an earthquake or vibration from a truck passing through the street based on the situation where the gas meter is placed. Yes, this is difficult to judge unless it is the site where the gas meter is placed, but the processing flow of the meter reading terminal is a list of estimated causes of vibration based on the duration and size of the abnormal data from the seismic sensor Up (S26) and output as necessary. In addition, as a countermeasure, in the case of large-scale vibration, it is necessary for the gas company to dispatch experts such as checking underground piping. In the case of small-scale vibrations, the looseness of the gas cylinder support chain by visual inspection, the judgment of the presence or absence of gas leakage due to olfaction, and the like are listed (S26) and output as countermeasures as necessary.

  If no security data is included in the security data, it will be detected that there is no abnormality detected by the gas meter, and that effect will be displayed, but if necessary, the gas cylinder, pressure regulator, It may include a step of inputting results such as the appearance and check of the piping and the gas meter, and the presence or absence of a strange odor or noise (S7).

  Further, when the visit request switch from the gas user in the house is pressed on the display unit, a message to that effect is displayed (S9). The gas meter reader can see the display, visit the user's house, and consult the user.

  Lastly, when an instruction for data transmission is given by the meter reader, it is input from the meter reading terminal to the gas company center through an external reporting means, along with the gas meter ID, the name of the meter meter, etc., along with the gas meter data, security data, and meter reader The prepared countermeasure is transmitted (S11).

  After that, if necessary, print out the contents of the above transmission that are easy to understand for the user, put it in a mailbox, etc., or hand it over, etc. Is aroused (S12).

  Although this invention demonstrated the Example in propane gas, if it is an environment where the safety check of gas equipment is required, it is useful also in various gas use environment. It is easy to create an environment in which the meter reading terminal is equipped with a large-capacity memory to increase the accumulated data or to be able to take in the data via the network. By the gas meter meter reading terminal of the present invention that can analyze the gas meter abnormality data The analysis and output of gas meter abnormality data will be a powerful advancement in the future in response to gas meter abnormality in the field. In particular, using the gas meter reading terminal of the present invention, abnormalities that lead to gas accidents can be found and dealt with in advance in the field, greatly improving the safety of the gas usage environment.

It is a block diagram which shows the basic composition of this invention. It is the block diagram which added the visit desired home switch which reports the visit request in the home to the structure of FIG. It is a block diagram of a gas meter. It is a block diagram of a data collection device. It is a block diagram of the terminal for meter-reading. It is a processing flow figure in the terminal for meter-reading. It is a processing flow figure of abnormal data in a meter-reading terminal. It is a block diagram of the conventional terminal for meter-reading. It is a block diagram of the conventional centralized management system of gas meter abnormality data. It is a block diagram of the outdoor and indoor equipment of propane gas. It is a figure which shows the example of a front display on the housing | casing of a gas meter.

Claims (6)

In the gas meter reading terminal that collects the meter reading data of the gas meter,
Security data is collected at the time of collecting the meter reading data,
Analyze the collected security data,
A gas meter abnormality detection method comprising outputting an analysis result obtained by the analysis. Transmitting means for transmitting a meter reading data request to data collecting means for collecting meter reading data and security data of the gas meter;
Receiving means for receiving the meter reading data and the security data transmitted from the data collection device in response to the meter reading data request;
Analyzing means for analyzing the received security data and obtaining an analysis result for security inspection;
Output means for outputting the security data and / or the analysis result;
A gas meter metering terminal comprising:   The gas meter metering terminal according to claim 2, wherein the output means is a display device that displays the security data and / or the analysis result.   The gas meter meter-reading terminal according to claim 2 or 3, further comprising reporting means for reporting the security data and / or the analysis result to a center.   The gas meter metering terminal according to any one of claims 2 to 4, wherein the collected data of the data collecting device includes message data desired to be visited. A gas meter that detects anomalies in the gas usage environment and generates security data;
A data collection device connected to the gas meter for acquiring data;
In the gas meter abnormality detection system provided with the meter-reading terminal which communicates with the data collection device and acquires data, the meter-reading terminal is the meter-reading terminal according to any one of claims 2 to 5. Gas meter abnormality detection system.

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