JP2009210376A - Flow measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent illicit use of an IC card (prepaid card), concerning a flow measuring device adopting a prepaid system. <P>SOLUTION: Certification of IC card data is performed by an IC card certification part 17 for determining whether the IC card is valid or invalid from data read by an IC card reading part 16 whether certification data stored in a storage medium in the IC card 300 agree with certification data peculiar to a gas meter device 100 or not. Then, a fluid usable amount is added, to thereby prevent illicit use. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flow rate measuring device that measures the flow rate of a fluid such as a gas, and more particularly to a flow rate measuring device that employs a prepaid system.

  Conventionally, as this type of flow rate measuring device, there are those as shown in Patent Document 1 and Patent Document 2, and in Patent Document 1, a value obtained by converting the available flow rate into a frequency or the like is written and purchased by the user in advance. A flow measurement system using a gas theft prevention card that can be used by the gas company and obtain the necessary information. As a specific configuration, a flow measurement device that can transmit and receive each other and a fine fee A determination device is provided. The flow rate measuring device includes a flow rate adjusting unit that measures a flow rate and opens the flow rate, and the collection fee determining device is a storage medium insertion unit that inserts a storage medium, and a frequency that is read and stored from the storage medium. Reading means, frequency reduction means for reducing the frequency stored in the frequency reading means based on the integrated flow rate value transmitted from the flow rate measuring device, and a signal for shutting off the flow rate when a predetermined frequency is reached Is provided.

  According to Patent Document 1, a flow rate corresponding to the remaining frequency of the storage medium flows, and if a new storage medium is inserted, a flow rate corresponding to the frequency is newly secured.

  Further, in Patent Document 2, a gas meter that measures the flow rate of gas supplied from a propane gas cylinder and calculates an integrated value, an NCU that outputs integrated value information of the gas meter via radio or wire, and an output from the NCU And a center device that receives the accumulated information, and a gas administrator who manages the center device manages the replacement timing of the gas cylinder based on the accumulated value, and also displays balance information of the prepaid gas fee. A card reader unit that reads the balance information of the stored prepaid card is connected to the gas meter, and when the prepaid card is attached to the card reader unit, the balance of the balance information is transferred to the prepaid card. Only when the gas remains, it is possible to supply gas from the gas cylinder and The balance information and updates subtracted based on the supply amount of a gas management system having means for interrupting the forced supply of gas at the time of said residue pitch information becomes zero.

And according to this patent document 2, by distributing the memory card which recorded the payment information of the gas charge by gas managers, such as a gas sales company, and letting a gas manager transmit the meter-reading value of a meter. It is possible to rationalize and eliminate meter reading and collection work by the gas administrator, and to achieve a significant cost reduction.
Japanese Patent Laid-Open No. 9-180053 JP 2002-074497 A

  In a flow measuring device employing a conventional prepaid system, there is no end to the situation of illegal use of gas by remodeling an IC card (prepaid card). In order to prevent such unauthorized use, a technology that can be realized without impairing maintainability and replaceability is required.

Therefore, the present invention provides an IC card reading unit and an IC authentication unit in the IC card, and judging whether or not fraud is present when the IC card is inserted, without impairing the maintainability and replaceability of the fluid measuring device, An object of the present invention is to provide a flow rate measuring device that can reliably collect a fluid usage fee.

  In order to solve the above-described conventional problems, a flow rate measurement device according to the present invention includes a flow path through which a fluid passes, a measurement unit that measures the flow velocity of the fluid that is disposed in the flow path and passes through the flow path, and a measurement unit. Insert a flow rate calculation unit that calculates the flow rate of the fluid based on the measured flow velocity of the fluid, a flow rate integration unit that integrates the flow rate of the fluid measured by the flow rate calculation unit, and a storage medium that stores the usable amount of fluid IC card insertion unit, IC card reading unit that reads the usable amount of fluid from the storage medium inserted in the IC card insertion unit, and whether the IC card is valid from the data read from the storage medium by the IC card reading unit IC card authenticating unit, IC card also recognizes an authentication code and outputs data in the IC card as well as the authenticating unit, and a storage medium by the IC card authenticating unit A remaining amount counting unit that adds as the fluid usable amount and subtracts the amount used by the flow rate integrating unit from the fluid usable amount, and a display means for displaying the fluid usable amount counted by the remaining amount counting unit It is equipped with.

  According to the above invention, the IC card data is authenticated by the IC card authentication unit for determining whether the IC card is valid or invalid from the data read from the storage medium by the IC card reading unit, and the fluid can be used. It is possible to prevent unauthorized use by adding the amount.

  The flow measuring device of the present invention is provided with an IC card reading unit and an IC authentication unit in the IC card, and when the IC card is inserted, from the data read from the storage medium by the IC card reading unit, whether it is an effective IC card, It is possible to determine whether it is an invalid IC card, authenticate the IC card data, and prevent unauthorized use by adding the amount of fluid that can be used, without compromising the maintainability and replaceability of the fluid measuring device. It is possible to provide a flow rate measuring device that can reliably collect the usage fee of the fluid.

  A first invention is based on a flow path through which a fluid passes, a measuring section that is disposed in the flow path and that measures a flow speed of the fluid that passes through the flow path, and a fluid flow rate that is measured by the measuring section. A flow rate calculation unit that calculates the flow rate of the fluid, a flow rate integration unit that integrates the flow rate of the fluid measured by the flow rate calculation unit, an IC card insertion unit that inserts a storage medium that stores a usable amount of fluid, and the IC An IC card reading unit that reads a usable amount of fluid from a storage medium inserted into the card insertion unit; an IC card authentication unit that determines whether the IC card is a valid IC card from data read from the storage medium by the IC card reading unit; In the IC card, the IC card recognizes the authentication code and outputs data in the same manner as the authentication unit, and the IC card authentication unit uses the fluid of the storage medium. A remaining amount counting unit for adding the amount used as a capacity and subtracting the used amount accumulated by the flow rate integrating unit from the available fluid amount; and a display means for displaying the usable fluid amount counted by the remaining used amount count unit. It is characterized by having.

  Then, an IC card reading unit and an IC authentication unit are provided in the IC card, and when the IC card is inserted, whether the IC card reading unit reads from the data read from the storage medium is a valid IC card or an invalid IC card. It is possible to prevent unauthorized use by determining, authenticating the IC card data, and adding the fluid usable amount.

In particular, according to a second invention, in the first invention, a function control unit for authenticating data read from a storage medium by the IC card reading unit by the IC card authentication unit and determining a code of a preset storage area, and the function A factory setting card determination means for recognizing and controlling the code in the storage area as a factory setting card by the control unit is provided.

  And the setting of the flow measurement device is set to the state at the time of factory shipment by recognizing that the factory setting card is inserted by the function control unit and the factory setting card determination means with the code set in advance on the IC card. Can do.

  According to a third aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit by the IC card authentication unit and determining the code of the preset storage area, and the function Measuring device data copy card determination means for recognizing and controlling the code of the storage area as a measuring device data copy card by the control unit is provided.

  When the function control unit and the measuring device data copy card determination unit recognize that the code set in advance in the IC card is inserted, the data of the measuring device can be copied to the IC card. .

  According to a fourth aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit by the IC card authentication unit and determining the code of the preset storage area, and the function Card data copy card determination means for recognizing and controlling the code of the storage area as a card data copy card by the control unit is provided.

  When the function controller and the card data copy card determination unit recognize that the code set in advance in the IC card is inserted, the data on the IC card can be copied to the data of the measuring device.

  According to a fifth aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit by the IC card authentication unit and determining the code of the preset storage area, and the function A flow rate measuring device number registration card determination means for recognizing and controlling the code of the storage area as a flow rate measuring device number registration card by the control unit is provided.

  Then, when the flow measurement device number read from the IC card by the flow measurement device number registration card determination means matches, the unauthorized use of the IC card is suppressed by adding it as a fluid useable amount to the remaining use count unit. Can do.

  According to a sixth aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit by the IC card authentication unit and determining the code of the preset storage area, and the function Operation check card determination means for recognizing and controlling the code of the storage area as an operation check card by the control unit is provided.

  Then, when the function control unit and the operation check card determination unit recognize that the code set in advance in the IC card is inserted, the operation of the measurement device is facilitated by performing a predetermined operation of the measurement device. Can do.

  According to a seventh aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit by the IC card authentication unit and determining the code of the preset storage area, and the function A learning value initialization card determination means for recognizing and controlling the code of the storage area as a learning value initialization card by the control unit is provided.

  Then, when the function control unit and the operation check card determination means recognize that the learning value initialization card is inserted into the code set in advance in the IC card, the predetermined learning value of the measuring device is initialized to initialize the measurement. At the time of maintenance such as when an abnormality occurs in the apparatus, it can be returned to a normal state and used.

  According to an eighth aspect of the invention, in particular, in the first aspect of the invention, the function control unit for authenticating the data read from the storage medium by the IC card reading unit and determining the code of the preset storage area by the IC card authentication unit, and the function A remaining usage amount initialization card determination unit is provided that recognizes and controls the code in the storage area as a remaining usage amount initialization card by the control unit.

  When the function control unit and the operation check card determination unit recognize that the code set in advance in the IC card is inserted, the fluid usable amount of the used remaining amount counting unit of the measuring device is initialized. By making it possible, the fluid can be disabled until a new resident contracts, such as when the resident moves home. The storage medium is a prepaid card purchased in advance by the user, for example. In this case, the present invention is applied to a widely used fluid prepaid system.

  Furthermore, the present invention is a program for operating a flow rate measuring device for measuring a flow rate of a fluid, and is a procedure for reading a usable fluid amount corresponding to a usable fluid amount and an effective IC card from data read from a storage medium There is also provided a program for causing a flow rate measuring device to execute an authentication procedure for determining whether or not is valid and a code determination procedure for a preset storage area of data read from a storage medium.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the present embodiment.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an outline of a gas meter device and a gas charge prepaid system as an embodiment of a flow rate measuring device of the present invention. The gas meter device 100 includes an IC card control unit 200 that can insert and remove an IC card (prepaid card) 300.

  As shown in the figure, the gas meter device 100 is installed at the entrance portion of the gas supply pipe of each household, and measures the gas flow rate and the amount used as the fluid to be measured used in the domestic gas appliance. The IC card control unit 200 is connected to the gas meter device 100 by wired or wireless communication, reads the usable amount of fluid from the IC card 300 purchased in advance by the user, and reads the used amount of gas from the gas meter device 100. Is subtracted from the IC card 300.

  As shown in FIGS. 2 and 3, the gas meter device 100 includes a flow path 10, a measurement unit 11, a flow rate calculation unit 12, a flow rate integration unit 13, and a valve drive unit 14.

  The flow path 10 is provided between the inflow path 1 connected to the gas supply pipe of each household and the outflow path 2 connected to a household gas appliance. A measuring unit 11 that measures the velocity (flow velocity) of the gas flowing through the flow channel 10 and a valve 22 that constitutes an opening / closing unit that opens and closes the flow channel 10 are connected to the middle of the flow channel 10. The valve 22 can be configured by a normal valve device such as an electromagnetic valve or a motor valve.

  The IC card control unit 200 includes an IC card insertion unit 15, an IC card reading unit 16, an IC card authentication unit 17, and a 1-bit data reading unit 21 or an all-bit data reading unit 22.

  The measurement unit 11 measures the velocity (flow velocity) of the gas flowing through the flow path 10 and measures the gas velocity using an ultrasonic sensor or the like. The flow rate calculation unit 12 calculates the flow rate of the gas flowing through the flow path 10 from the gas velocity measured by the measurement unit 11.

  The flow rate integrating unit 13 integrates the gas flow rate flowing through the flow path 10 from the gas flow rate obtained by the flow rate calculating unit 12. The valve drive unit 14 drives opening and closing of a gas supply valve provided in the flow path 10.

  The IC card insertion unit 15 detects that the IC card 300 has been inserted. The IC card reading unit 16 is a part that reads data stored in the IC card 300 when the IC card insertion unit 15 detects it after the IC card 300 is inserted. The IC card authenticating unit 17 authenticates whether the authentication data in the specific area of the IC card reading unit 16 matches.

  The remaining usage count unit 18 subtracts the accumulated amount of gas used by the flow rate integration unit 13 from the remaining usage data stored in the IC card 300 that has been authenticated by the IC card authentication unit 17. The display means 19 displays a value obtained by subtracting the accumulated amount of gas used by the flow rate product from the remaining usage data.

  The function control unit 20 distinguishes the type of the IC card by the authentication unit in the specific area of the IC card 300 authenticating by the IC card authentication unit 17 and determining the code of the preset storage area.

The 1-bit data reading means 21 reads 1 bit at 1 m ³ when reading the remaining usage data stored in the IC card 300, and erases 1 bit of the fluid usage of the storage medium each time it is read. Then, after confirming that it has been erased, it is added to the use remaining amount counter 18 as a fluid usable amount.

  The all-bit data reading means 22 in FIG. 3 confirms that all of the fluid usage of the storage medium has been erased after reading all the remaining usage data stored in the IC card 300, and then uses the remaining usage count section. 18 is added as a fluid usable amount.

  The operation and action of the flow rate measuring apparatus configured as described above will be described below.

  First, the operation of the first means in the present embodiment will be described.

  The gas and fluid passing through the gas supply pipe 1 pass through the measurement unit 11 and flow to the outflow path 2. The measurement unit 11 calculates the flow rates of the gas and liquid that have passed through the flow rate calculation unit 12. The flow rate calculated by the flow rate calculation unit 12 is integrated by the flow rate integration unit 13 with the flow rate that has passed through the measurement unit 11.

On the other hand, in the IC card 300, the usable amount of gas and liquid used by the user is purchased in advance, and the usable amount is stored in the storage medium of the card. When the IC card 300 is inserted into the IC card control unit 200, when the IC card insertion unit 15 confirms the insertion of the IC card 300, the authentication data stored in the IC card 300 by the IC card reading unit 16 and the gas meter device The IC card authentication unit 17 confirms whether or not the 100-specific authentication data matches.

  Similarly to the authentication unit 17, the IC card 300 outputs data when the IC card recognizes the authentication code. When the authentication by the IC card authentication unit 17 is normally completed, the remaining usage count unit 18 reads the usable amount stored in the storage medium of the IC card 300 and uses the usage amount of gas and liquid from the flow rate integration unit 13. Subtraction is performed from the remaining usable amount of the remaining used amount counting unit 18.

  The display means 19 displays the usable amount of the remaining use count unit 18 on a liquid crystal display or the like to inform the user. In this way, whether the IC card is valid from the data read by the IC card reading unit 16 as to whether the authentication data stored in the storage medium in the IC card 300 matches the authentication data unique to the gas meter device 100, Unauthorized use can be prevented by authenticating the IC card data by the IC card authenticating unit 17 that determines whether it is invalid and adding the fluid usable amount.

  Next, in the second means, when the IC card 300 is inserted into the IC card control unit 200, when the IC card insertion unit 15 confirms the insertion of the IC card 300, the IC card reading unit 16 stores it in the IC card 300. The IC card authenticating unit 17 confirms whether or not the authentication data and the authentication data unique to the gas meter device 100 match.

  When the authentication by the IC card authenticating unit 17 is normally completed, the usable amount stored in the storage medium of the IC card 300 is read bit by bit by the 1-bit data reading means 21. When reading the usable amount for each bit, if one bit of the usable amount of the storage medium of the IC card 300 is confirmed, before adding the usable amount as the usable amount to the remaining amount counter 18, One usable bit stored in the storage medium is erased.

  Then, after confirming that one bit of the usable amount stored in the storage medium of the IC card 300 has been erased, it is added to the remaining usage count unit 18 as the usable amount. As described above, by checking the data read from the storage medium in the IC card 300 by the 1-bit data reading unit 21 bit by bit, it is possible to prevent unauthorized use of the IC card data to a minimum. .

  Next, in the third means, when the IC card 300 is inserted into the IC card control unit 200, when the insertion of the IC card 300 is detected by the IC card insertion unit 15, the IC card reading unit 16 stores the IC card 300 in the IC card 300. The IC card authenticating unit 17 confirms whether or not the authentication data and the authentication data unique to the gas meter device 100 match.

  When the authentication by the IC card authenticating unit 17 is normally completed, all the bit data reading means 22 reads all usable bits stored in the storage medium of the IC card 300 at a time. When all the bits of the usable amount stored in the storage medium of the IC card 300 are confirmed when reading all the bits of the usable amount, before adding the usable amount as the usable amount to the remaining usage amount counting unit 18, All the bits of the usable amount stored in the storage medium are erased. After confirming that all the bits of the usable amount stored in the storage medium of the IC card 300 have been erased, the remaining usage counter 18 Is added as an available amount.

  In this way, the illegal use of the IC card data is prevented to a minimum by adding the usable amount after the data read from the storage medium in the IC card 300 is completely read and erased by the all bit data reading means 22. It is possible. When data is read by the all-bit data reading means 22, unauthorized use can be further prevented by adding a check code such as encryption or sum check to the usable amount.

  Next, in the fourth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the storage area code is determined and the storage area code is identified by the factory setting card determination means 23 that the IC card 300 is a factory setting card, the flow measuring device can be brought into a factory-shipped state.

  Next, in the fifth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the storage area code is determined, the storage area code identifies the IC card 300 as a measurement apparatus data copy card by the measurement apparatus data copy card determination means 24, and stores storage information such as the remaining usable amount in the measurement apparatus. Copy to the storage medium of the IC card 300.

  Thereafter, the measuring device data copy card determination unit 24 rewrites the code of the measuring device data copy card from the code of the measuring device data copy card to the card data copy card to the code of the preset storage area of the IC card 300. As described above, when the measuring device such as a gas meter is replaced, the storage information such as the remaining usable amount of the measuring device before the replacement is temporarily copied to the IC card 300 and newly installed in the measuring device via the IC card 300. By making it possible to copy, it becomes possible to continue to use stored information such as the remaining amount in the measuring device before replacement when the measuring device is replaced.

  Next, in the sixth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the storage area code is determined, the storage area code identifies the IC card 300 as a card data copy card by the card data copy card determination means 25, and the storage information such as the remaining usable amount of the storage medium of the IC card 300 When the measuring device such as a gas meter is replaced, the storage information such as the remaining usable amount of the measuring device before the replacement is temporarily copied to the IC card 300 and newly installed in the measuring device. By making it possible to copy via the card 300, when the measuring device is replaced, the measuring device before replacement is replaced. Continue to use information stored in the remaining amount, etc. it is possible to use.

  Next, in the seventh means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the code of the storage area is determined, the code of the storage area is identified by the measuring device number registration card determining means 25 as the IC card 300 is a measuring device number registration card, and the measuring device number in the storage medium of the IC card 300 is measured. Register in the storage area in the device.

  This measurement device number is stored in both the IC card 300 and the measurement device, and is measured only when the measurement device number of the IC card 300 and the number of the measurement device match when the remaining usage amount is added by the IC card 300 thereafter. Add the fluid usage amount of the device.

  In this way, when the measuring device number stored in the storage medium in the IC card 300 by the IC card reading unit 16 and the measuring device number of the gas meter device 100 coincide with each other, an unauthorized use is performed by adding the fluid usable amount. Can be prevented.

Next, in the eighth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 performs code determination of a preset storage area. Means for determining the code of the storage area, identifying the IC card 300 as the operation check card by the operation check card determination means 27, and causing the valve drive unit 14 or the display means 19 to perform a specific operation or display. By providing, it is possible to facilitate the operation confirmation by performing a predetermined operation of the measuring device.

  Next, in the ninth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the code of the storage area is determined, and the code of the storage area is identified by the learning value initialization card determination means 28 as the IC card 300 is a learning value initialization card, measurement is performed when an abnormality is detected during normal use or during maintenance. By providing a means for initializing the learning value as necessary, it is possible to easily return to normal operation at the site even when an abnormality is detected.

  Next, in the tenth means, after the data read from the storage medium of the IC card 300 by the IC card reading unit 16 is authenticated by the IC card authentication unit 17, the function control unit 20 determines the code of the preset storage area. When the storage area code is determined, and the storage area code is identified by the use remaining amount initialization card determination means 29 as the IC card 300 is a remaining use amount initialization card, the remaining use amount is initialized. When a person moves home, the fluid can be disabled until a new resident contracts.

  As described above, the flow rate measuring device according to the present invention determines whether the IC card is valid or invalid from the data read from the storage medium by the IC card reading unit, authenticates the IC card data, and uses the remaining amount. By adding, it can be applied to a flow rate measuring device such as a gas meter that can reliably recover the usage fee of the fluid without impairing maintainability and replaceability.

Schematic diagram of a flow rate measuring device in an embodiment of the present invention The system block diagram of the flow measuring device in embodiment of this invention The system block diagram of the flow measuring device in other embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Measurement part 12 Flow volume calculation part 13 Flow rate integration part 14 Valve drive part 15 IC card insertion part 16 IC card reading part 17 IC card authentication part 18 Used residual quantity count part 19 Display means 20 Function control part 21 1 bit data reading means 22 All bit data reading means

Claims (8)

A flow path through which the fluid passes, a measurement unit that is disposed in the flow path and that measures the flow velocity of the fluid that passes through the flow channel, and a flow rate that calculates the flow rate of the fluid based on the flow velocity of the fluid measured by the measurement unit A calculation unit, a flow rate integration unit that integrates the flow rate of the fluid measured by the flow rate calculation unit, an IC card insertion unit that inserts a storage medium storing a usable amount of fluid, and an IC card insertion unit An IC card reading unit that reads a usable amount of fluid from the stored storage medium, an IC card authentication unit that determines whether the IC card is a valid IC card from data read from the storage medium by the IC card reading unit, and the IC card Similarly to the authentication unit, the IC card recognizes an authentication code and outputs data, and the IC card authentication unit adds the amount of fluid that can be used as a storage medium. And a usage remaining amount counting unit that subtracts the usage amount accumulated by the flow rate integration unit from the fluid usable amount, and a display unit that displays the fluid usable amount counted by the remaining usage amount counting unit. Flow measurement device. The flow rate measuring device according to claim 1,
The data read from the storage medium by the IC card reading unit is authenticated by the IC card authenticating unit, and the function control unit for determining the code of the preset storage area, and the code of the storage area is recognized as the factory setting card by the function control unit A flow rate measuring device provided with a factory setting card judging means for controlling. The flow rate measuring device according to claim 1,
A function control unit that authenticates data read from the storage medium by the IC card reading unit by the IC card authentication unit and discriminates a code of a preset storage area; and a code of the storage area by the function control unit and a measuring device data copy card A flow rate measuring device provided with a measuring device data copy card determining means for recognizing and controlling. The flow rate measuring device according to claim 1,
A function control unit that authenticates data read from a storage medium by an IC card reading unit and determines a code of a preset storage area by the IC card authentication unit, and recognizes the code of the storage area as a card data copy card by the function control unit A flow rate measuring device provided with card data copy card determining means for controlling. The flow rate measuring device according to claim 1,
A function control unit that authenticates data read from the storage medium by the IC card reading unit and discriminates a preset storage area code by the IC card authentication unit, and the flow control device number registration card for storing the storage area code by the function control unit A flow rate measuring device provided with a flow rate measuring device number registration card judging means for recognizing and controlling. The flow control device according to claim 1, wherein the function control unit that authenticates data read from the storage medium by the IC card reading unit by the IC card authentication unit and discriminates a code of a preset storage area, and the function control A flow rate measuring device provided with operation check card determination means for recognizing and controlling the code of the storage area as an operation check card by the unit. The flow rate measuring device according to claim 1,
A function control unit that authenticates data read from the storage medium by the IC card reading unit and discriminates a preset storage area code by the IC card authentication unit; and a learning value initialization card that converts the storage area code by the function control unit A flow rate measuring device provided with a learning value initialization card determination means for recognizing and controlling. The flow rate measuring device according to claim 1,
A function control unit that authenticates data read from the storage medium by the IC card reading unit and discriminates the code of the storage area set in advance by the IC card authentication unit; A flow rate measuring device provided with a remaining use amount initialization card determination means for recognizing and controlling.

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