JP2016025384A - Consumption check system and consumption check program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a consumption check system capable of easily checking the consumption amount with a high security based on an accumulated amount measured by an accumulation amount meter.SOLUTION: When an accumulation amount meter reads an accumulated amount of measured consumption amount, a display unit adds an identification code unique to an accumulated amount data and transmits the same to an information terminal by using short-range radio communication. Receiving the accumulated amount data transmitted from the display unit, the information terminal acquires the previous accumulated amount based on the identification code attached to the data. The information terminal calculates consumption amount of this time by using the previous accumulated amount and the accumulated amount which is calculated from the received data and displays the same.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention use a display device such as an electronic shelf label terminal and a portable information terminal such as a smartphone (Smart Phone) or a tablet PC (Personal Computer) to measure the electricity, gas, water, or the like. The present invention relates to a system for confirming a target usage amount.

  There are so-called integrating meter, which is an electric meter that integrates and displays the amount of electricity to be measured such as electricity, gas, and water. This type of meter indicator is usually small because it is attached to the front of the meter body, and the displayed characters are small. Also, depending on the meter installation environment, the displayed content may not be easily visible. Such a problem can be solved by connecting an external display device to the meter and displaying the integrated amount measured by the meter on the display device.

  Therefore, the present applicant proposes an electronic shelf label terminal mainly used in the distribution field such as a retail store as this type of display device. The electronic shelf label terminal uses a substantially entire front surface of the main body in the form of a bill as a display unit. Then, the electronic shelf label terminal displays the display data received electronically from the external system on this display unit. Therefore, although the size of the display character is relatively large, the restriction on the installation space is small, so that it is suitable as an external display device for the integrated amount meter.

  However, when the electronic shelf label terminal is applied as an external display device for the integrated meter, not only the user to be weighed and the meter reader but also a third party can easily check the integrated amount. For this reason, the usage amount based on the integrated amount may be illegally obtained and misused by a third party.

JP 2013-054539 A

  The problem to be solved by the embodiment of the present invention is to provide a usage amount confirmation system that can easily confirm the usage amount based on the integration amount measured by the integration amount meter with high security.

  In one embodiment, the usage amount confirmation system includes a display device having a short-range wireless communication function and a portable information terminal capable of short-range wireless communication with the display device. The display device attaches a unique identification code to data of the integrated amount acquired from the integrated amount meter, and takes in the integrated amount of the usage amount measured by the integrated amount meter, and performs the short-range wireless communication. Transmitting means for transmitting to the information terminal. The information terminal includes a receiving unit that receives the accumulated amount data transmitted from the display device using the short-range wireless communication, and a previous time based on an identification code attached to the data received by the receiving unit. An acquisition unit that acquires an integration amount at the time of measurement, and a calculation that calculates a use amount that is a difference from the integration amount at the previous measurement acquired by the acquisition unit to an integration amount derived from data received by the reception unit. Means and an output means for outputting the usage amount calculated by the calculation means.

1 is a schematic diagram of an integrated amount confirmation system in one embodiment. FIG. The schematic diagram which shows the principal part of the data record of 1 user preserve | saved in a user database in the embodiment. The block diagram which shows the principal part structure of an electronic shelf label terminal. The block diagram which shows the principal part structure of an information terminal. The flowchart which shows the information processing procedure which CPU of an information terminal performs according to an integration amount confirmation program. The flowchart which shows the information processing procedure performed according to CPU of an electronic shelf label terminal having received the starting request | requirement command. The schematic diagram which shows an example of the integrated amount displayed on the display device of an electronic shelf label terminal. The schematic diagram which shows an example of the usage-amount management data displayed on the touch panel of an information terminal.

Hereinafter, embodiments of the integrated amount confirmation system will be described with reference to the drawings.
FIG. 1 is a schematic diagram of an integrated amount confirmation system in the present embodiment. This system includes an electronic shelf label terminal 10 and a portable information terminal 20. The electronic shelf label terminal 10 functions as an external display device connected to the integrated quantity meter 30 via a wireless communication line. The electronic shelf label terminal 10 has a short-range wireless communication function based on NFC (near field communication) standards.

  The integrated amount meter 30 is an electric meter that integrates the amount of use of an object to be measured such as electricity, gas, and water. The integration amount meter 30 includes a wireless device 31. The integrated amount meter 30 performs wireless communication with a specific electronic shelf label terminal 10 via the wireless device 31 and transmits integrated amount data.

  The information terminal 20 is a portable electronic device such as a smartphone or a tablet PC. The information terminal 20 has a short-range wireless communication function according to the NFC standard similar to the electronic shelf label terminal 10. Therefore, when the information terminal 20 is brought close to the electronic shelf label terminal 10, data can be transmitted and received by the short-range wireless communication between the information terminal 20 and the electronic shelf label terminal 10.

  The information terminal 20 can perform data communication with the server 50 through a network 40 such as the Internet or a mobile network. The server manages the user database 60. The user database 60 stores data related to a user (user) of an object to be weighed (electricity, gas, water, etc.) measured by the integrating meter 30.

  The main part of the data record 60R for one user stored in the user database 60 is shown in FIG. As shown in the drawing, in the user database 60, a data record 60R including a shelf label ID, user information, previous accumulated amount, and accumulated amount history data is stored for each user.

  The shelf label ID is a unique identification code uniquely assigned to each electronic shelf label terminal 10 connected to each user's integrated amount meter 30. The user information is information related to a user to be weighed (electricity, gas, water, etc.) accumulated by an accumulation meter 30 connected to an electronic shelf label terminal 10 to which a corresponding shelf label ID is assigned, for example, a name, Address, phone number, usage fee transfer destination, use start date, etc. The previous integrated amount is an integrated amount at the time of the latest meter reading for the integrated amount meter 30. The accumulated amount history data is data indicating a history of meter reading of the accumulated amount meter 30, and at least the meter reading date and time and the accumulated amount at that time are registered. The increment from the accumulated amount at the previous meter reading to the accumulated amount at the current meter reading may be registered in the history data as a used amount within the meter reading period. In addition, a usage fee converted from this usage amount may be registered in the history data.

  FIG. 3 is a block diagram showing a main configuration of the electronic shelf label terminal 10. The electronic shelf label terminal 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, an NFC unit 14, a display device 15, and a wireless device 16. , And a bus line 17 such as a data bus. The electronic shelf label terminal 10 is equipped with a battery 18 as a driving power source.

  The CPU 11 corresponds to the central part of the computer. CPU11 controls each part in order to implement | achieve various functions as the electronic shelf label terminal 10 according to an operating system or an application program.

  The ROM 12 corresponds to a main storage part of the computer. The ROM 12 stores the above operating system and application programs. The ROM 12 may store data necessary for the CPU 11 to execute processing for controlling each unit. The ROM 12 stores a shelf label ID that is a unique identification code assigned to the electronic shelf label terminal 10. The ROM 12 may be a flash ROM capable of electrically rewriting data.

  The RAM 13 corresponds to the main storage portion of the computer. The RAM 13 stores data necessary for the CPU 11 to execute processing. The RAM 13 is also used as a work area in which information is appropriately rewritten by the CPU 11.

  The NFC unit 14 performs data communication according to the NFC standard with an NFC compatible device in the vicinity of the electronic shelf label terminal 10. The wireless device 16 performs wireless data communication with a wireless device 31 mounted on the corresponding integrated amount meter 30 using a predetermined wireless frequency.

  The display device 15 uses a substantially entire front surface of the electronic shelf label terminal 10 in the form of a bill as a display unit 151 (see FIG. 1), and displays characters, numbers, and the like on the display unit 151. As the display device 15, a color LCD (liquid crystal display), a segment display, electronic paper, or the like can be used.

  FIG. 4 is a block diagram showing a main configuration of the information terminal 20. The information terminal 20 includes a CPU 21, a ROM 22, a RAM 23, an auxiliary storage device 24, an NFC unit 25, a touch panel 26, and a communication interface 27, which are connected by a bus line 28 such as an address bus and a data bus. The information terminal 20 is equipped with a battery 29 as a driving power source.

  The CPU 21 corresponds to the central part of the computer. CPU21 controls each part in order to implement | achieve the various functions as the information terminal 20 according to an operating system or an application program.

  The ROM 22 corresponds to a main storage part of the computer. The ROM 22 stores the above operating system and application programs. The ROM 22 may store data necessary for the CPU 21 to execute processing for controlling each unit. The ROM 22 may be a flash ROM capable of electrically rewriting data.

  The RAM 23 corresponds to a main storage part of the computer. The RAM 23 stores data necessary for the CPU 21 to execute processing. The RAM 23 is also used as a work area where information is appropriately rewritten by the CPU 21.

  The auxiliary storage device 24 corresponds to the auxiliary storage portion of the computer. The auxiliary storage device 24 is, for example, a memory card such as an SD card, an EEPROM (Electric Erasable Programmable Read-Only Memory), an HDD (Hard Disc Drive), or an SSD (Solid State Drive). The auxiliary storage device 24 stores data used when the CPU 21 performs various processes and data generated by the processes performed by the CPU 21. The auxiliary storage device 24 may store the above application program.

  The NFC unit 25 performs data communication according to the NFC standard with an NFC-compatible device in the vicinity of the information terminal 20.

  The touch panel 26 includes a display device and a touch sensor. The display device displays an arbitrary screen such as a GUI screen. As the display device, for example, a known device such as a color LCD can be used. The touch sensor is disposed so as to overlap the display surface of the display device. The touch sensor detects the touch position of the user on the display surface of the display device and sends the position information to the CPU 21.

  The communication interface 27 performs data communication with the server 50 via the network 40. The information terminal 20 can access the server 50 via the communication interface 27, read data stored in the user database 60 managed by the server 50, and update the data (access means).

  The information terminal 20 is carried by a worker who is in charge of the meter reading work of the integrated quantity meter 30. The information terminal 20 is installed with an application program for supporting meter reading work, a so-called usage amount confirmation program APL. The usage amount confirmation program APL is stored in the auxiliary storage device 24 as shown in FIG. The storage destination of the usage amount confirmation program APL is not limited to the auxiliary storage device 24. A usage amount confirmation program APL may be stored in the ROM 22.

  When the worker goes to a house or facility where the integrated quantity meter 30 is attached, the operator touches the touch panel 26 of the information terminal 20 to activate the usage amount confirmation program APL. When it is confirmed that the usage amount confirmation program APL has started, the worker brings the information terminal 20 closer to the electronic shelf label terminal 10 attached in the vicinity of the integrated amount meter 30.

  In the information terminal 20 in which the usage amount confirmation program APL is activated, the CPU 21 starts processing of the procedure shown in the flowchart of FIG. 5 according to the program APL. Note that the content of the processing described below is an example, and various processing that can obtain the same result can be used as appropriate.

  First, the CPU 21 controls the NFC unit 14 and transmits an activation request command (Act 1). Then, the CPU 21 waits for a response from the command transmission destination (Act 2). When the worker brings the information terminal 20 close to the electronic shelf label terminal 10 but the distance is still far and short-range wireless communication according to the NFC standard is impossible, a response from the command transmission destination, that is, the electronic shelf label terminal 10 There is no. Alternatively, there is no response when the electronic shelf label terminal 10 is out of order. If there is no response (NO in Act 2), the CPU 21 ends this process as an error.

  The electronic shelf label terminal 10 is in a sleep state during normal times. In this sleep state, only short-range wireless communication via the NFC unit 14 is possible, and data display by the display device 15 and wireless communication by the wireless device 16 are not performed.

  When the activation request command from the information terminal 20 is received via the NFC unit 14, the CPU 11 of the electronic shelf label terminal 10 returns a normal reception response signal (ACK) and, for example, in accordance with a control program stored in the ROM 12, The reception process shown in the flowchart of FIG. 6 is started. Note that the content of the processing described below is an example, and various processing that can obtain the same result can be used as appropriate.

The CPU 11 operates the wireless device 16 and transmits an inquiry command for the integrated amount (Act 21). Then, the CPU 11 waits for reception of digitized integrated amount data from the integrated amount meter (Act22: capture means).
The inquiry command wirelessly transmitted from the electronic shelf label terminal 10 is received by the wireless device 31 of the integrating amount meter 30 corresponding to the electronic shelf label terminal 10. When the integration amount meter 30 receives the integration amount inquiry command via the wireless device 31, the integration amount meter 30 encrypts the integration amount of the measurement target at the present time using a predetermined encryption function. The integrated amount meter 30 converts the integrated amount of encrypted data into electronic data, and wirelessly transmits the electronic data via the wireless device 31.

  Electronic data wirelessly transmitted from the integrated amount meter 30, that is, encrypted data of the integrated integrated amount is received by the wireless device 16 of the electronic shelf label terminal 10 corresponding to the integrated amount meter 30. When the integrated amount of encrypted data is received (YES in Act 22), the CPU 11 acquires the shelf label ID stored in the ROM 12 (Act 23). Then, the CPU 11 transmits electronic data obtained by adding the shelf label ID to the integrated amount of encrypted data to the information terminal 20 that is the inquiry command transmission source via the NFC unit 14 (Act 24: transmission means).

  Further, the CPU 11 decrypts the integrated amount of encrypted data to obtain the integrated amount (Act 25). Then, the CPU 11 operates the display device 15 to display the integrated amount (Act 26: display means).

  A display example of the integrated amount is shown in FIG. As shown in the figure, the integrated amount is displayed on the display unit 151 formed on almost the entire front surface of the main body of the electronic shelf label terminal 10, so that it is compared with the conventional display displayed on the display unit of the integrated amount meter 30. Displayed in large letters. Therefore, it is easy for the worker to visually check the integrated amount.

  Note that the procedures of the processes of Acts 23 and 24 and the processes of Acts 25 and 26 are not limited to this order. The processing of Acts 25 and 26 may be performed first, and the processing of Acts 23 and 24 may be performed later.

Returning to FIG.
After displaying the integrated amount, the CPU 11 waits for a confirmed command from the information terminal 20 (Act 27). If a confirmed command is received via NFC unit 14 (YES in Act 27), CPU 11 erases the display of the integrated amount (Act 28: erasure means). As described above, the CPU 11 ends the process according to the control program. When this process ends, the electronic shelf label terminal 10 enters a sleep state.

Returning to FIG.
If a response signal indicating normal reception is received from the electronic shelf label terminal 10 within a predetermined time after transmitting the activation request command (YES in Act 2), the CPU 21 of the information terminal 20 displays a screen indicating waiting for the accumulated amount on the touch panel 26. Display (Act3). Then, the CPU 21 waits to receive the accumulated amount data from the electronic shelf label terminal 10 (Act 4: receiving means).

  The data transmitted from the NFC unit 14 of the electronic shelf label terminal 10 in the process of Act 24 in FIG. 6, that is, electronic data composed of the integrated amount of encrypted data and the shelf label ID, is sent from the information terminal 20 via the NFC unit 25. The CPU 11 displays the password input screen on the touch panel 26 (Act 5). Then, the CPU 21 waits for a password to be input (Act 6).

  The worker who has confirmed the password input screen touches the soft keyboard displayed on the touch panel 26 and inputs a predetermined password. When a password is input (YES in Act 6), the CPU 21 determines the validity of the password (Act 7: authentication means). For example, the auxiliary storage device 24 of the information terminal 20 stores a password registered in advance by a worker who carries the information terminal 20, and the CPU 21 determines whether or not the input password matches the registered password. The effectiveness is judged by

  If the passwords do not match, that is, if the validity of the password is not recognized (NO in Act 7), CPU 21 waits for the password to be input again. Here, if the validity is not recognized even if the password input is repeated three times, for example, the CPU 21 may terminate this process as an error.

  On the other hand, if the passwords match, that is, if the validity of the password is recognized (YES in Act 7), the CPU 21 decrypts the received encrypted data of the integrated amount to obtain the integrated amount (Act 8: Decryption means). Further, the CPU 21 detects the shelf label ID from the received data, and generates a previous accumulated amount request command including the shelf label ID. Then, the CPU 21 transmits this request command to the server 50 via the communication interface 27 (Act 9: acquisition means).

  Note that the procedures of Act8 processing and Act9 processing are not limited to this order. The process of Act9 may be executed first, and the process of Act8 may be executed later.

  The previous accumulated amount request command is transmitted to the server 50 via the network 40. Upon receiving this request command, the server 50 accesses the user database 60 with the shelf label ID included in the command, and reads the data record 60R in which the shelf label ID is set. Then, the server 50 transmits the user information and the previous integrated amount of the data record 60R to the information terminal 20 that is the request command transmission source via the network 40.

  The CPU 21 of the information terminal 20 that has transmitted the request command waits for a response from the server 50 (Act 10). If there is no response even after a predetermined time has elapsed after transmitting the request command (NO in Act 10), CPU 21 causes touch panel 26 to display a communication error screen. An image of a confirmation button is displayed on the communication error screen, and the CPU 21 waits for the confirmation button to be touched (Act 12).

  The worker who confirms the communication error screen touches the confirmation button. When the confirmation button is touched (YES in Act 12), the CPU 21 transmits a confirmed command to the electronic shelf label terminal 10 via the NFC unit 25 (Act 18).

  On the other hand, when a request command is transmitted to the server 50 and a response signal of the previous accumulated amount is received from the server 50 within a predetermined time (YES in Act 10), the CPU 21 obtains the accumulated amount obtained in Act 8 (current time). The previous accumulated amount is subtracted from the accumulated amount) to calculate the used amount from the previous meter reading (Act 13: calculating means).

  If the usage amount can be calculated, the CPU 21 converts this usage amount into a usage fee (Act 14). For example, a data table in which a usage amount and a usage fee for the usage amount are associated is stored in the auxiliary storage device 24, and the CPU 21 refers to this data table and converts the usage amount into a usage fee. The CPU 14 displays management data including at least the usage amount and the usage fee on the touch panel 26 (Act 15: output means).

  A display example of the management data is shown in FIG. In this example, in addition to the usage amount and usage fee, the user name, the previous integration amount, and the current integration amount included in the user information are displayed together on one screen of the touch panel 26. Therefore, the worker can easily check not only the current integrated amount but also the previous integrated amount, the usage amount from the previous meter reading (current month usage amount), and even the usage fee by simply looking at the screen of the touch panel 26.

  As shown in FIG. 8, the image of the confirmation button B1 is displayed on the management data screen. The worker who has finished the confirmation work touches confirmation button B1.

  The CPU 21 displaying the management data waits for the confirmation button B1 to be touched (Act 16). If it is detected that confirmation button B1 is touched (YES in Act 16), CPU 21 generates an update command including the current integrated amount and shelf label ID, and wirelessly transmits to server 50 via communication interface 27. Transmit (Act 17: update means). Further, the CPU 21 transmits a confirmed command to the electronic shelf label terminal 10 through the NFC unit 25 (Act 18).

It should be noted that the procedures of Act 17 and Act 18 are not limited to this order. The process of Act17 may be executed first, and the process of Act18 may be executed later.
The update command is transmitted to the server 50 via the network 40. The server 50 accesses the user database 60 with the shelf label ID included in the update command, and rewrites the previous integrated amount of the data record 60R in which the shelf label ID is set to the current integrated amount included in the update command.

  This completes the information processing of the CPU 21 according to the usage amount confirmation program APL. The usage amount confirmation program APL is also terminated.

  As described above, in the usage amount confirmation system of the present embodiment, the electronic shelf label terminal 10 takes in the integration amount of the usage amount measured by the integration amount meter 30, and the integration amount acquired from the integration amount meter 30. Transmitting means for attaching a shelf label ID, which is a unique identification code, to the data and transmitting the data to the information terminal 20 using short-range wireless communication according to the NFC standard. On the other hand, the information terminal 20 receives a cumulative amount data transmitted from the electronic shelf label terminal 10 using the short-range wireless communication, and a shelf label ID attached to the data received by the reception unit. Based on the acquisition means for acquiring the integrated amount at the previous measurement from the user database 60, and the difference from the integrated amount at the previous measurement acquired by the acquisition means to the integrated amount derived from the data received by the receiving means. Calculation means for calculating a certain usage amount and output means for displaying the usage amount calculated by the calculation means on the touch panel 26 are provided.

  Therefore, since the usage amount calculated based on the integrated amount measured by the integrated amount meter 30 can be confirmed from the image displayed on the touch panel 26 of the information terminal 20 carried by the meter-reading operator, confirmation is easy. Moreover, since the information terminal 20 is carried by an operator, the usage amount can be confirmed with high security without being stolen by a third party.

  In addition, the information terminal 20 accesses the user database 60 for storing the integrated amount for each shelf label ID, and the integrated amount stored in the user database 60 in association with the shelf label ID attached to the data received by the receiving unit. Updating means for rewriting to the integrated amount derived from the received data. Then, the acquisition unit acquires the integrated amount stored in association with the shelf label ID attached to the data received by the receiving unit from the user database 60 before rewriting the integrated amount by the updating unit.

  Therefore, by using the information terminal 20, it is possible to accurately obtain the usage amount of the measurement target such as electricity, gas, and water for each user of the integrating meter 30.

  Further, the information terminal 20 includes means for converting the usage amount into a usage fee, and displays the usage fee converted by this means on the touch panel 26 together with the usage amount. Therefore, by using the information terminal 20, it is possible to accurately obtain the usage fee of the measurement target such as electricity, gas, and water for each user of the integrating meter 30.

  Further, the accumulated amount data transmitted from the electronic shelf label terminal 10 to the information terminal 20 is encrypted. The information terminal 20 includes a user authentication unit using a password and a decryption unit that decrypts the encrypted data on condition that the user has been authenticated.

  Therefore, even if a third party who does not know the password illegally obtains the information terminal 20, the integrated amount measured by the integrated amount meter 30 cannot be acquired, so that the security is higher.

  On the other hand, the electronic shelf label terminal 10 displays the integrated amount displayed from the integrated amount meter 30 when communication with the information terminal 20 is established according to the NFC standard, and the integrated amount is displayed according to the confirmation signal from the information terminal 20. And erasing means for erasing.

  Therefore, while the information terminal 20 is on the electronic shelf label terminal 10, the integrated amount taken from the integrated amount meter 30 is displayed on the display device of the electronic shelf label terminal 10, so that the meter reading operator confirms the integrated amount. Is easy. In addition, when the operator performs a confirmation operation, the display of the accumulated barber is erased, so there is almost no fear that the accumulated amount will be stolen by a third party. In addition, since the electronic shelf label terminal 10 is in the sleep state while the information terminal 20 is not deceived, the life of the battery 18 can be extended. Therefore, even if the electronic shelf label terminal 10 is attached to a house, a facility, etc., it can be used for a long period without replacing the battery, so that it is very effective as an external display device for the integrating meter 30.

The present invention is not limited to the above embodiment.
For example, in the embodiment, the information terminal 20 accesses the server 50 via the network 40 and reads and updates the data record of the user database 60 via the server 50. However, the present invention is not limited to this. . Usually, the user of the integrating meter 30 where the worker carrying the information terminal 20 performs the meter reading work is known in advance. Therefore, the data record of the user in charge of this worker is downloaded from the server 50 to the information terminal 20 via the network 40 in advance. The downloaded data record is stored in the auxiliary storage device 24. This makes it possible to read and update data records in the user database 60 without the information terminal 20 accessing the server 50.

  User authentication means is not limited to password authentication means. For example, a well-known authentication means using biological information such as a fingerprint may be applied.

  The means for the electronic shelf label terminal 10 to acquire the accumulated amount data from the accumulated amount meter 30 is not limited to the wireless communication means. The electronic shelf label terminal 10 may be connected to the integrated amount meter 30 with a wire to capture integrated amount data.

  The integrated amount measured by the integrated amount meter is not limited to the usage amount of electricity, gas, water and the like. For example, image forming apparatuses such as multifunction peripherals and copiers are provided with a counter that counts the number of times of printing. This counter is usually in the device and is difficult for the user to check. Therefore, it is also possible to construct the usage amount confirmation system of this embodiment using this counter as an integrated amount meter.

  The usage amount confirmation program APL can be transferred by recording it on a removable recording medium or by communication via a network. The recording medium may be in any form as long as it can store a program such as a CD-ROM or a memory card and can be read by the apparatus. Further, the function obtained by installing or downloading the program may be realized in cooperation with an OS (operating system) in the apparatus.

  In addition, although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Electronic shelf label terminal, 11 ... CPU, 14 ... NFC unit, 15 ... Display device, 16 ... Wireless device, 20 ... Information terminal, 21 ... CPU, 24 ... Auxiliary storage device, 25 ... NFC unit, 26 ... Touch panel 27 ... Communication interface, 30 ... Integration amount meter, 31 ... Wireless device, 50 ... Server, 60 ... User database.

Claims (6)

A display device having a short-range wireless communication function, and a portable information terminal capable of short-range wireless communication with the display device,
The display device
A take-in means for taking in the accumulated amount of the amount used by the accumulated amount meter;
Transmitting means for attaching a unique identification code to the accumulated amount data taken from the accumulated amount meter and transmitting to the information terminal using the short-range wireless communication,
The information terminal
Receiving means for receiving the accumulated amount data transmitted from the display device using the short-range wireless communication;
Obtaining means for obtaining an integrated amount at the previous measurement based on an identification code attached to data received by the receiving means;
A calculating unit that calculates a usage amount that is a difference from the integrated amount obtained at the previous measurement acquired by the acquiring unit to the integrated amount derived from the data received by the receiving unit;
An output means for outputting the usage amount calculated by the calculation means;
A usage confirmation system comprising: The information terminal
Means for accessing a storage unit for storing an integrated amount for each identification code;
Updating means for rewriting the integrated amount stored in the storage unit in association with the identification code attached to the data received by the receiving means, into an integrated amount derived from the data;
Further comprising
2. The use according to claim 1, wherein the acquisition unit acquires, from the storage unit, an integration amount stored in association with an identification code attached to data received by the reception unit before rewriting the integration amount by the updating unit. Quantity confirmation system. The accumulated amount data transmitted from the display device to the information terminal is encrypted,
The information terminal
User authentication means;
Decrypting means for decrypting the encrypted data on the condition that the user is authenticated;
The usage confirmation system according to claim 1 or 2, further comprising:   The usage amount confirmation system according to any one of claims 1 to 3, wherein the output unit further outputs fee information converted from the usage amount. The display device
Display means for displaying the integrated amount taken from the integrated amount meter when establishing communication with the information terminal;
Erasing means for erasing the display of the integrated amount in response to a confirmation signal from the information terminal;
The usage confirmation system according to any one of claims 1 to 4, further comprising: To the computer of the portable information terminal that performs short-distance wireless communication with a display device that transmits data using short-range wireless communication, with a unique identification code attached to the data representing the accumulated amount of usage metered by the total amount meter
A function of acquiring an integrated amount at the time of previous measurement based on an identification code attached to data received from the display device using the short-range wireless communication;
A function for calculating a usage amount that is a difference from the acquired cumulative amount at the previous measurement to the cumulative amount derived from the received data;
A function of outputting the calculated usage amount;
Usage confirmation program for realizing

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