JP2014183328A - System, device and method for electricity charge calculation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the conventional problem for a user to obtain electricity charge information for a predetermined period, requiring either transmission of electricity charge information to an information terminal etc. with the provision of a clock function in equipment, or collection of information from the information terminal at predetermined timing with both conduction of equipment power and connection to a network at all times.SOLUTION: An accumulated use value is stored in electronic equipment. First equipment information accumulated in an equipment information storage unit is searched for at the time of near range communication. From the first equipment information, second equipment information in the vicinity of the predetermined period is searched for, so that electricity charge of the electric equipment is calculated.

Description

  The present invention relates to an electrical device calculation system, an electrical cost calculation device, and an electrical cost calculation method for communicating with an electrical device non-periodically and calculating an electrical cost of the electrical device.

  In recent years, digitization and higher functionality of various household electric appliances such as refrigerators, microwave ovens, IH cooking heaters, washing machines, scales, and body fat scales have been developed. And with the digitalization and high functionality of these electrical devices, various data are stored in the electrical devices, and these data are read out of the devices by wireless communication from the electrical devices for information monitoring and new services. Attempts have been made to make use of it.

  As described above, a technique is known in which data stored in a device is read out to check information on the electrical device such as an electricity bill with an information terminal (see, for example, Patent Document 1).

JP-A-2005-76958

  However, data is read from various household electric appliances such as refrigerators, microwave ovens, IH cooking heaters, washing machines, scales, and body fat scales, and the user desires a monthly electricity bill or an electricity bill per day. In order to obtain information on the electricity bill for a predetermined period, the device has a clock function and periodically sends information on the electricity bill to an information terminal or the like, or the device is always energized and always connected to the network, It was necessary to collect information from the information terminal periodically at a predetermined timing.

  For this reason, in order to obtain information on the electricity bill for a predetermined period from the conventional household electric appliance, the clock function is incorporated into the appliance, or the appliance or information terminal can communicate with the appliance at a timing desired by wireless communication. It is necessary to configure the information terminal so that it is always connected, which increases the cost of the device, requires connection settings between the device and wireless communication, and increases the standby power of the device for constant connection. There was an inconvenience.

  Incorporating a clock into an electric device requires the user to set the time of the clock of the electric device, and if the time is not set correctly or if the time of the set clock is shifted with the passage of time, it is used. Because information is read out to the outside of the device at a timing different from that required to calculate the electricity bill, time maintenance is required for each electrical device, and the time is kept in the electrical device. Is difficult.

  An object of the present invention is to provide an electricity cost calculation system, an electricity cost calculation device, and an electrical device that can calculate an electricity cost for a predetermined period of the electrical device by storing the accumulated usage value in the electrical device. Is to provide.

In order to solve the above-mentioned problem, the present invention first sets arbitrary device information out of device information stored in a device information storage unit that stores at least two pieces of device information including a cumulative value and time information. After specifying as the device information, the device information including the starting point in the past for a predetermined period from the time indicated by the time information included in the first device information or the time information within the predetermined period from the starting point is specified as the second device information. The electricity cost of the electric device is calculated from the cumulative value included in the first device information and the second device information.

  The electricity cost calculation system, the electricity cost calculation device, and the electrical device having such a configuration can easily calculate the electricity cost for a predetermined period.

The figure which shows an example of a structure of an electricity bill calculation system The figure which shows an example of a structure of the electricity bill calculation system which calculates an electricity bill with a server apparatus. Configuration diagram of electricity bill calculation system Configuration diagram of the electricity bill calculation system that calculates the electricity bill in the server device The figure which shows the example of the data preserve | saved at an apparatus information storage part Figure showing an example of device information search Figure showing examples of calculation formula and calculation example of electricity bill Flow chart explaining the flow from data acquisition to electricity bill calculation The figure which shows the example of a screen display when acquiring data acquisition and calculating electricity bill Flow chart explaining the flow from calendar selection to electricity bill calculation The figure which shows the example of the screen display when calculating the electricity bill from the calendar selection

  A first invention relates to an electricity bill calculation system including an electrical device and an electricity bill calculation device that calculates an electricity bill of the electrical device based on a cumulative value of usage values of the electrical device. A measurement unit that measures the usage value of the battery, a cumulative value accumulation unit that accumulates a cumulative value of the usage value measured by the measurement unit, and a device communication unit that transmits the cumulative value to the electricity bill calculation device. The calculation device includes a calculation device communication unit that irregularly acquires a cumulative value from an electrical device, a clock unit that measures time information at which the cumulative value is acquired, and a cumulative value and a clock unit that are acquired by the calculation device communication unit. A device information storage unit that stores two or more device information including the measured time information, and a device information storage unit that stores one arbitrary device information as the first device information among the device information stored in the device information storage unit Specialized in the device information search unit and the first device information search unit A second device information search unit for identifying device information including time information closest to a past time for a predetermined period from the time indicated by the time information included in the first device information, first device information, An electricity cost calculation unit that calculates an electricity cost of the electrical device from the accumulated value included in the second device information.

  According to this, even if the electrical device does not have a clock function, the user can obtain the cumulative usage value of the electrical device by short-range wireless communication irregularly without being constantly connected to the network. The cost can be calculated. For this reason, it can be easily adopted for general electric devices without any restrictions such as setting the time of the clock of the electric device, increasing standby power, or being unable to turn off the power. become.

The second invention relates to an electricity cost calculation system comprising a server for calculating the electricity cost of the electrical device based on a cumulative value of usage values of the electrical device, and a portable terminal capable of communicating with the server. A measuring unit that measures the usage value of the electrical device, a cumulative value storage unit that accumulates a cumulative value of the usage value, and a device communication unit that transmits the cumulative value accumulated in the cumulative value accumulation unit by proximity wireless communication. The portable terminal includes a proximity communication unit that irregularly acquires a cumulative value from an electrical device by proximity wireless communication, and a terminal communication unit that transmits the cumulative value to the server. The server is transmitted from the portable terminal. Two or more pieces of device information including a server communication unit that acquires a cumulative value, a clock unit that measures time information when the cumulative value is acquired, and a cumulative value acquired by the server communication unit and time information measured by the clock unit Store device information A first device information search unit for identifying one arbitrary device information as the first device information from the device information stored in the device information storage unit, and a first device specified by the first device information search unit A second device information search unit for identifying device information including time information closest to the past time for a predetermined period from the time indicated by the time information included in the information as the second device information, and the first device information and the second device information And an electricity cost calculation unit for calculating the electricity cost of the electrical device from the accumulated value included in the power.

  According to this, since it is possible to easily perform proximity wireless communication with an electric device with a general portable terminal device possessed by the user, it is possible to have the user use the function of calculating the electricity bill at a lower cost. become able to.

  The third aspect of the invention further includes a memory unit that stores at least a user ID specified by the user, particularly with respect to the portable terminal according to the second aspect of the invention, and the terminal communication unit transmits the user ID stored in the memory unit, The server communication unit acquires the user ID, and the device information storage unit stores the user ID as device information, so that the first device information search unit and the second device information search unit search for device information for each user ID. Is. According to this, it becomes possible to present information on the electrical equipment for each user.

  According to a fourth aspect of the invention, in particular, with respect to the electrical apparatus according to the first or second aspect of the invention, a plurality of measuring units are provided, and the cumulative value accumulating unit accumulates a total of a plurality of used values as a cumulative value. According to this, even if there are a plurality of heating parts such as an IH cooking heater, the electricity bill can be calculated with a small memory capacity.

  In particular, the fifth invention relates to the portable terminal according to the second to fourth inventions, and displays a proximity instruction screen for instructing the user to bring the proximity communication unit and the electrical device close to communicate with the electrical device. A first device information search unit for identifying device information stored in the device information storage unit as first device information when close proximity wireless communication is performed from a screen displayed by the display unit. According to this, after a user performs close proximity wireless communication, a cumulative usage value is acquired from an electrical device, and a series of operations up to calculation of an electricity bill at that time can be automatically performed.

  The sixth aspect of the invention further includes a display unit that displays a calendar selection screen for the user to select a desired date, particularly with respect to the portable terminal according to the second to fourth aspects of the invention, and the terminal communication unit is included in the display unit. The date selected by the user from the displayed calendar selection screen is transmitted, and the first device information search unit specifies the device information of the date received from the mobile terminal as the first device information. According to this, it becomes possible to calculate the electricity bill of the electric device at the date desired by the user.

  A seventh invention relates to an electricity bill calculating device, a calculating device communication unit for irregularly obtaining a cumulative value of usage values of an electric device from the electric device, and a clock for measuring time information at which the cumulative value is obtained. A device information storage unit that stores two or more pieces of device information including a cumulative value acquired by the calculation unit communication unit and time information measured by the clock unit, and device information stored in the device information storage unit A first device information search unit that identifies any device information as the first device information, and a time that is a predetermined period from the time indicated by the time information included in the first device information specified by the first device information search unit A second device information search unit for identifying device information including the nearest time information as second device information, and an electric bill for calculating the electric bill of the electric device from the first device information and a cumulative value included in the second device information. A calculation unit Than is.

An eighth invention relates to an electricity bill calculation method, a calculation device communication step for irregularly obtaining a cumulative value of usage values of an electric device from the electric device, and a clock step for measuring time information when the cumulative value is obtained. And a first device information search step for identifying arbitrary device information as first device information from device information stored in a device information storage unit that stores at least two pieces of device information including at least a cumulative value and time information And a second device that identifies, as second device information, device information including time information that is closest to a past time for a predetermined period from the time indicated by the time information included in the first device information specified in the first device information search step An information search step and an electricity cost calculation step of calculating the electricity cost of the electrical device from the accumulated values included in the first device information and the second device information are performed.

  The ninth invention relates to a storage device, and stores a program for executing the electricity cost calculation method of the eighth invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 are block diagrams showing the overall configuration of an electricity bill calculation system according to an embodiment of the present invention. An electricity bill calculation system 1 shown in FIG. 1 includes an electric device 2 and an electricity bill calculation device 3. The electricity bill calculation system 1 shown in FIG. 2 includes an electric device 2, a mobile terminal device 4, and a server device 5. The mobile terminal device 4 is communicably connected to the server device 5 via the network 6. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted.

  The electrical device 2 may be a biological information measuring device such as a weight scale, a body fat meter, and a blood pressure meter, or may be a measuring device such as a data logger that measures and records environmental information such as temperature and humidity. . Moreover, a television, a refrigerator, a washing machine, a microwave oven, an IH cooking heater, etc. may be sufficient, and other various electric equipment may be sufficient. The electrical device 2 is configured to be able to communicate with the electricity cost calculation device 3 or the portable terminal device 4 by, for example, near field communication (NFC). The electrical device 2 mainly includes a device control unit 21 and a device communication unit 22. The electrical devices 2 a and 2 b include a device control unit 21 and a device communication unit 22, as with the electrical device 2, and can communicate with the electricity bill calculation device 3 or the mobile terminal device 4 via the device communication unit 22. . The electric devices 2a and 2b are widely distributed in the market and are installed in the user's residence. The electric devices 2a and 2b are, for example, different types of home appliances from the electric device 2 or the same type of home appliances as the electric device 2, but may be different types of home appliances. The electricity bill calculation system 1 may include electric devices 2 a and 2 b together with the electric device 2.

  The electricity bill calculation device 3 is a device that can be carried by a user, such as a notebook computer or a tablet terminal having a short-range wireless communication function.

  The mobile terminal device 4 is a communication device that can be carried by a user, such as a mobile phone having a function of short-range wireless communication, for example.

  The server device 5 is, for example, a computer in a data center installed in a remote place, a computer managed by a communication provider, a service provider, or the like.

  The network 6 is a communication network such as the Internet, a telephone line, and a mobile communication network.

  FIG. 3 is an internal configuration diagram of the electricity bill calculation system 1 shown in FIG. 3 includes at least a device control unit 21 and a device communication unit 22, and the device control unit 21 further includes a measurement unit 211 and a cumulative value storage unit 212.

  The device control unit 21 includes, for example, a CPU (Central Processing Unit) that executes predetermined arithmetic processing, a nonvolatile ROM (Read Only Memory) that stores a predetermined control program, and a RAM (Random Access) that temporarily stores data. Non-illustrated communication IF (interface) circuit that performs serial communication with the device communication unit 22, such as EEPROM (Electrically Erasable and Programmable Read Only Memory) or FeRAM, or a volatile nonvolatile memory element. A cumulative value storage unit 212 composed of the RAM and peripheral circuits thereof. The device control unit 21 configures the measurement unit 211 by executing a control program stored in, for example, a ROM.

  The measuring unit 211 obtains a usage value necessary for calculating the electricity bill of the electric device 2 and stores the accumulated value in the accumulated value accumulating unit 212. For example, when the electrical device 2 is an IH cooking heater, the power consumption (Wh) multiplied by the cooking time (T) at the time of heating and the output power (W) set as the thermal power is calculated as a usage value and accumulated. The accumulated value stored in the value accumulation unit 212 is added. Further, by storing the unit price (yen / Wh) of the electricity bill in the device control unit 21 of the electric device 2, the power charge can be calculated by multiplying the amount of power used and used as a used value. The usage value only needs to be a value that can be used to calculate the electricity bill of the electric device 2 later. If the electric device uses a constant electric power (yen), electric energy (Wh), or an output such as an electric heater. The usage time (seconds) is acceptable. Further, any configuration may be employed as long as the calculation control unit 33 can calculate the electricity cost by storing a plurality of values such as usage time (seconds) and heating power (W) in the accumulated value storage unit 212. In addition, the measurement unit 211 includes, for example, a voltage sensor and a current sensor that respectively measure a voltage (V) and a current (A) (not shown), and measures the actual power consumption (W) of the electrical device 2. It is also possible to configure so as to obtain a more accurate usage value.

  The accumulated value storage unit 212 is realized by a nonvolatile memory, and is various storage elements such as a FeRAM (Ferroelectric Random Access Memory) and a flash memory.

  The measuring unit 211 reads the accumulated value accumulated in the accumulated value accumulating unit 212, adds the newly measured usage value, and accumulates the accumulated value in the accumulated value accumulating unit 212 to update the accumulated value. At this time, a checksum for detecting an error in the accumulated value may also be stored in the accumulated value storage unit 212. Note that the accumulated value accumulated can be prevented from being reset by the user's device operation, so that the newly read accumulated value can be prevented from being smaller than the previously read accumulated value.

  The checksum is an example of an error detection code. The error detection code is not limited to the checksum, and various error detection codes and data can be used as the error detection code. For example, instead of the checksum, CRC (Cyclic Redundancy Check) may be used, or an error-correctable code or data may be used.

  In addition, when there are a plurality of measuring units 211, the accumulated value accumulating unit 212 accumulates a total of a plurality of used values as accumulated values, so that there are few even if there are a plurality of heating units such as an IH cooking heater. The electricity cost of the electric device can be calculated from the memory capacity.

The device communication unit 22 includes a communication device for near field wireless communication including the NFC circuit 221, and causes the electric device 2 to communicate with the electricity cost calculation device 3 in near field wireless communication. Here, short-range wireless communication is an international standard for wireless communication known as NFC (Near Field Communication), and is a low-power wireless communication technology performed at a distance of several tens of centimeters. As a result, when the electricity bill calculation device 3 is held over a predetermined location, the electrical device 2 starts short-range wireless communication with the electricity bill calculation device 3 and transmits and receives various data. In response to the received request, the device communication unit 22 accesses the accumulated value storage unit 212 of the device control unit 21 and reads the accumulated use value. The read accumulated usage value is transmitted to the electricity bill calculation device 3 by the NFC circuit 221. As the close proximity wireless communication, various frequency bands such as a high frequency band of 13.56 MHz band, a UHF band of 90 MHz to 1 GHz, or a frequency band exceeding 2 GHz band can be used.

  Here, the NFC circuit 221 is a communication circuit that performs close proximity wireless communication with each other via a loop antenna. For example, near field communication can be executed according to a communication specification standardized as ISO / IEC21481 (NFC IP-2). In the close proximity wireless communication, since the communicable reference distance is as short as about 10 cm, for example, it is necessary to bring the loop antenna close to execute the close proximity wireless communication. Therefore, for example, a mark indicating the position of the loop antenna is attached to the position where the loop antenna of the electric device 2 and the electricity bill calculation device 3 is embedded, and the user marks the mark of the electric device 2 and the electricity bill calculation device 3. By approaching or touching each other, close proximity wireless communication is performed between devices. Hereinafter, the action of touching includes the action of bringing the electric device 2 and the electricity bill calculation device 3 close to a distance where close proximity wireless communication is possible.

  Since the electrical equipment 2 and the electricity bill calculation device 3 are not always arranged close to each other, it is necessary to detect that a touch has been performed in order to perform proximity wireless communication. In addition, since the user touches the unspecified electrical device 2 using the unspecified electricity cost calculation device 3, in order to perform communication between the electrical device 2 and the electricity cost calculation device 3, when the user touches In addition, it is necessary to recognize the existence of communication partners.

  Therefore, for example, the NFC circuit 221 transmits a periodic polling command. When the electricity bill calculation device 3 is present within the range of close proximity wireless communication from the electric device 2 when the polling command is executed, the NFC circuit receives the polling command and thereby receives the polling command. The response command is transmitted to the electric device 2 in response to the polling. The NFC circuit recognizes the presence of the electricity bill calculation device 3 by receiving the response command. As described above, the NFC circuits 221 and 311 recognize each other, so that it is possible to execute close proximity wireless communication between the NFC circuits 221 and 311.

  In this way, when the electric device 2 (NFC circuit 221) and the electricity bill calculation device 3 (NFC circuit 311) recognize each other and make a communicable state, this is called communication establishment. The communication establishment method is not necessarily limited to the method using polling and response as described above. Regardless of the communication establishment method, the state where the electric device 2 and the electricity bill calculation device 3 can communicate with each other is referred to as communication establishment. When the communication is successfully established, the NFC circuit 221 notifies the device control unit 21 that the communication has been successfully established. When the communication establishment is successful, the NFC circuit 311 notifies the calculation control unit 33 that the communication establishment is successful.

  Note that a polling command may be transmitted from the NFC circuit 311, and the NFC circuits 221 and 311 may transmit a response command from both. In addition, an example in which the NFC circuit 221 that is the device communication unit 22 and the NFC circuit 311 that is the calculation communication unit 31 perform close proximity wireless communication has been shown, but communication between the device communication unit 22 and the calculation communication unit 31 is as follows. Not only near field wireless communication by NFC, but also other short-range wireless communication methods such as Bluetooth (registered trademark) and low power wireless that perform non-periodic communication by a user performing a predetermined operation. Good.

However, when the NFC circuits 221 and 311 execute close proximity wireless communication, as described above, the user touches the electric device 2 with the electric device 2 through a sensible and intuitive operation in which the user touches the electric device 2. Since communication can be established with the electricity bill calculation device 3, the convenience for the user is improved. In addition, since the NFC circuits 221 and 311 can recognize that the user has touched the electric device 2 with the electricity bill calculation device 3 by successful communication establishment, the operation touched by the user is used as a trigger in response to the touch operation. It is easy to execute the processing.

  The electricity bill calculation device 3 includes at least a calculation communication unit 31, a clock unit 32, and a calculation control unit 33.

  The calculation control unit 33 further includes a device information storage unit 331, a first device information search unit 332, a second device information search unit 333, and an electricity bill calculation unit 334.

  Similar to the device communication unit 22, the calculation communication unit 31 is configured by a communication device for close proximity wireless communication, and causes the electricity bill calculation device 3 to communicate with the electric device 2 via short distance wireless communication. As a result, when the electricity bill calculation device 3 is touched to a predetermined place of the electric device 2, short-distance wireless communication with the electric device 2 is started and various data are transmitted and received.

  The clock unit 32 is a clock circuit that clocks the current date and time. As the clock unit 32, for example, an RTC (Real Time Clock) is used.

  The calculation control unit 33 includes a device information storage unit 331, a first device information search unit 332, a second device information search unit 333, and an electricity bill calculation unit 334. The device information storage unit 331 is a rewritable nonvolatile memory such as a CPU that executes predetermined arithmetic processing, a nonvolatile ROM that stores a predetermined control program, and a RAM that temporarily stores data, such as EEPROM and FeRAM. It is realized by an element or a volatile RAM. The control program may be downloaded via a network.

  The device information accumulation unit 331 includes device information including at least the accumulated use value accumulated in the accumulated value accumulation unit 212 of the electric device 2 and the time information obtained when communicating from the clock unit 32 through short-range wireless communication. accumulate. FIG. 5 is an example of data stored in the device information storage unit 331, and device information A, device information B, device information C, device information D, and device information E are stored every time communication with the electric device 2 is performed. Is done. Each piece of device information includes storage date / time, accumulated electricity cost, and accumulated use time. In order to calculate the electricity bill, it is necessary to store at least two pieces of device information in the device information storage unit 331. When two or more pieces of device information are not accumulated, the calculation control unit 33 does not calculate the electricity cost.

  Note that the device communication unit 22 of the electric device 2 is configured to automatically transmit the accumulated usage value upon request when performing close proximity wireless communication, thereby setting the device other than calculating the electricity bill. The accumulated use value can be stored in the device information storage unit 331 during communication such as operation.

  The first device information search unit 332 searches for device information to be used as first device information from a plurality of device information stored in the device information storage unit 331. For example, as shown in FIG. 6, when the latest electricity bill is calculated, the time information (the storage date and time included in the device information) is the most popular device information to be searched among the device information stored in the device information storage unit 331. The new device information is specified as the first device information. In addition, when calculating the electricity bill for a specific date such as the date specified by the user or the end of the month, the first device information search unit 332 displays the device information including the time information closest to the specific date as the first information. You may specify as apparatus information.

  The second device information search unit 333 is predetermined from time information (save date and time included in the device information) included in the device information extracted by the first device information search unit 332 in order to calculate the electricity bill from the two pieces of device information. The device information including the storage date and time near this period is specified as the second device information.

  For example, as shown in FIG. 6, when calculating the electricity bill for a period of one month, the device information near one month before is searched from the time information of the first device information. The predetermined period is one month so that it can be easily compared with the electricity bill from the power company, or one day to grasp the electricity bill used for one day, A period assumed to be desired by the user is set, for example, one year for comparison with the annual electricity bill. Alternatively, it may be configured to be selectable by incorporating a function selected by the user into the electricity bill calculation device 3. In addition, as a search algorithm, search for data that is closest to the time information of the first device information from the previous month, and if there is no data, the time information (date By searching for old data, it is possible to minimize errors caused by selecting new data.

  Note that, if the second device information is too close or too far from the first device information, an error increases from the value desired by the user. Therefore, as much device information as possible is stored in the device information storage unit 331. It is desirable to store the device information of the electrical device 2 by collecting the device information of the electrical device 2 even in the case of short-range wireless communication by other services such as operation and setting of the electrical device 2. Is possible.

  Further, when the substrate including the device control unit 21 or the base including the device communication unit 22 of the electric device 2 is replaced due to a failure of the electric device 2 or the like, the cumulative use value stored in the cumulative value storage unit 212 is stored. Will be reset. For this reason, the cumulative use value of the first device information may be smaller than the cumulative use value of the second device information. In this case, the second device information search unit 333 detects that the first cumulative usage value is smaller than the second cumulative usage value, determines that the electrical device 2 has been repaired, etc. The second device information is limited to search for device information having a value smaller than the cumulative use value of the first device information, or the device information storage unit 331 searches for past device information than the first device information. By configuring so as to be excluded from the target, data inconsistency can be avoided. In addition, when accumulating in the device information accumulating unit 331, if the accumulated use value of newly accumulated device information is smaller than the accumulated use value of device information accumulated last time, the second device information search unit 333 is used. By determining that the electric device 2 has been repaired and resetting the information in the device information storage unit 331, data inconsistency can be avoided.

  The electricity bill calculation unit 334 calculates the electricity bill of the electrical device from the two pieces of device information of the first device information and the second device information. As a calculation method of the electricity cost, for example, as shown in the calculation formula 1 in FIG. 7, the difference between the accumulated electricity costs between two points is divided by the difference in storage time, thereby calculating the average electricity cost for one day. it can.

  Furthermore, as shown in the calculation formula 2 in FIG. 7, by multiplying the scheduled number of days, it is possible to calculate the electricity bill when the desired number of days is used.

  Although the denominator is the day unit, the calculation accuracy can be changed by using another unit such as hour, minute or second. For example, if the calculation is for a period of about one month, the denominator may be in units of days. However, if you want to calculate how much electricity is used during the day, use the denominator in hours or minutes. Therefore, it can be made closer to the actual value.

  Also, by adjusting the value of the denominator with an electric device, for example, cooking appliances such as microwave ovens and rice cookers can be used during cooking, so that the denominator is set to one day unit, so that the error in the time zone used can be reduced. Can be absorbed.

  Further, by calculating the usage time in the same way as the electricity bill as described in the reference formula of FIG. 7, it is possible to obtain the average usage time of the day and the like.

  By configuring in this way, the accumulated usage value accumulated in the electrical device 2 at the timing when the electrical device 2 and the electricity cost calculation device 3 communicate irregularly is stored for each time of the electricity cost calculation device 3. Thus, the electricity bill for a predetermined period desired by the user can be calculated.

  FIG. 4 illustrates an internal configuration of the electricity bill calculation system 1 illustrated in FIG. 2 in which the electric device 2, the mobile terminal device 4, and the server device 5 are combined. The electric device 2 in FIG. 4 has the same configuration as that in FIG.

  The mobile terminal device 4 of FIG. 4 includes a proximity communication unit 41, a terminal communication unit 42, a terminal control unit 43, a display unit 44, and an operation unit 45. The proximity communication unit 41 includes at least an NFC circuit 411. Thus, the terminal control unit 43 includes at least a memory unit 431.

  The near field communication unit 41 has the same configuration as that of the calculation communication unit 31 and is configured by a communication device for near field wireless communication. The NFC circuit 411 and the NFC circuit 221 cause the mobile terminal device 4 to communicate with the electrical device 2 in near field communication. Let

  The terminal communication unit 42 is a communication circuit that performs wireless mobile communication, for example. The terminal communication unit 42 performs data transmission / reception with the server device 5 via the network 6. When the terminal communication unit 42 accesses the network 6 by wireless mobile communication, the mobile communication carrier connects to the Internet line. Thus, the terminal communication unit 42 can communicate with the server device 5 connected to the Internet line.

  The terminal control unit 43 is a rewritable nonvolatile memory such as a CPU that executes predetermined arithmetic processing, a nonvolatile ROM that stores a predetermined control program, and a RAM that temporarily stores data, such as EEPROM and FeRAM. A memory unit 431 including an element and a volatile RAM, a peripheral circuit thereof, and the like are provided. The terminal control unit 43 controls the proximity communication unit 41, the terminal communication unit 42, and the display unit 44, for example, by executing a control program stored in the ROM. The control program may be downloaded via a network.

  The memory unit 431 transmits a user ID to the server device 5 via the terminal communication unit 42 by storing at least a user ID for distinguishing a user who uses the mobile terminal device 4. The user ID is a unique ID or nickname composed of alphanumeric characters that can be specified by the user. The server device 5 distinguishes the user being accessed by registering in advance when the server device 5 is used. can do.

  The display unit 44 is a display device such as a liquid crystal display or an organic EL display. The operation unit 45 is an operation input device such as a key switch or a touch panel. The display unit 44 and the operation unit 45 are connected to the terminal control unit 43. The display unit 44 and the operation unit 45 may be an operation panel in which a display panel and a touch panel are integrally formed.

  By touching the electric terminal 2 with the portable terminal device 4, short-range wireless communication can be performed, and the accumulated usage value accumulated in the electric device 2 can be transmitted from the electric device 2 to the server device 5 irregularly. . Moreover, when transmitting to the server apparatus 5, the server apparatus 5 can receive as information which can identify a user by transmitting the user ID memorize | stored in the memory part 431 together.

  The server device 5 includes a server communication unit 51, a clock unit 52, and a server control unit 53. The server control unit 53 uses various storage devices and storage elements such as a CPU that executes predetermined arithmetic processing, a RAM that temporarily stores data, such as an HDD (Hard Disk Drive) device, an EEPROM, and an FeRAM. A device information storage unit 531 which is a configured storage device and its peripheral circuits are provided. The server control unit 53 configures a first device information search unit 532, a second device information search unit 533, and an electricity bill calculation unit 534 by executing a control program stored in the device information storage unit 531, for example.

  The server communication unit 51 is, for example, an Ethernet (registered trademark) communication interface circuit. The server communication unit 51 is connected to the terminal communication unit 42 via the network 6 so as to be able to transmit and receive data. The server communication unit 51 is connected to the server control unit 53.

  The clock unit 52 is a clock circuit that clocks the current date and time, like the clock unit 32. As the clock unit 32, for example, an RTC (Real Time Clock) is used. Furthermore, it can be configured to maintain an accurate time by communicating with an NTP (Network Time Protocol) server.

  The server control unit 53 has the same configuration as that of the calculation control unit 33, the device information storage unit 531 stores device information similarly to the device information storage unit 331, and the first device information search unit 532 includes first device information. The search unit 332, the second device information search unit 533 have the same configuration as the second device information search unit 333, and the electricity bill calculation unit 534 has the same configuration as the electricity bill calculation unit 334.

  Next, as an example of the operation of the electricity bill calculation system 1 configured as described above, a flow from acquisition of accumulated usage value data to electricity bill calculation will be described with reference to FIG. First, in step S01, a screen for prompting close proximity wireless communication to the electrical device 2 is displayed on the display unit 44 of the mobile terminal device 4 as in the example shown on the left side of FIG. When the user touches the electric device 2 in accordance with the instruction of the mobile terminal device 4, the proximity wireless communication is established between the NFC circuit 221 and the NFC circuit 311.

  In step S <b> 02, the accumulated value of the usage value measured by the measuring unit 211 is read from the accumulated value accumulating unit 212 and transmitted to the mobile terminal device 4 via the device communication unit 22.

  In step S <b> 03, the cumulative use value received by the proximity communication unit 41 and the user ID stored in the memory unit 431 are transmitted to the server device 5 via the network 6 by the terminal communication unit 42. In step S <b> 04, the time when the server communication unit 51 receives the accumulated use value and the user ID is acquired from the clock unit 52 as time information.

  In step S05, the device information storage unit 531 of the server control unit 53 stores the accumulated usage value, user ID, and time information as device information.

  In step S06, device information to be used as first device information is specified from a plurality of device information stored in the device information storage unit 531. The device information to be identified is the device information with the newest time information among the device information stored in step S05.

  Next, the second device information search unit 533 calculates device information around a predetermined period from the time information included in the device information extracted by the first device information search unit 532 in order to calculate the electricity bill from the two pieces of device information. Is searched as the second device information. When calculating the electricity bill for a period of one month, the device information near one month before is searched from the time information of the first device information.

  Next, the electricity bill calculation unit 534 calculates the electricity bill of the electrical device from the two pieces of device information of the first device information and the second device information. As a calculation method of the electricity cost, for example, as shown in the calculation formula 1 in FIG. 7, the difference between the accumulated electricity costs between two points is divided by the difference in storage time, thereby calculating the average electricity cost for one day. it can. As shown in the right side of FIG. 9, the calculation period can be displayed based on the electricity cost per day and the time information of the two pieces of device information used for the calculation.

  Next, as an example of the operation of the electricity bill calculation system 1 configured as described above, a flow from calendar selection to electricity bill calculation will be described with reference to FIG.

  First, in step S11, a calendar screen for selecting the calculation date of the electricity bill of the electric device 2 is displayed on the display unit 44 of the mobile terminal device 4 as in the example shown on the left side of FIG. Note that the date for calendar display can be selected by acquiring only the date of the device information stored in the device information storage unit 531 of the server control unit 53 from the server communication unit 51 via the network 6. It is also possible to configure the user to select only the date for which there is data.

  In step S <b> 12, the user selects a calculation date using the operation unit 45 in accordance with an instruction from the mobile terminal device 4.

  In step S13, the user ID stored in the memory unit 431 and the date data selected by the user in step S12 are transmitted to the server device 5 via the network 6 by the terminal communication unit.

  In step S <b> 14, device information to be used as first device information is retrieved from a plurality of device information stored in the device information storage unit 531. The device information to be searched specifies the device information that matches the user ID and date received in step S13 as the first device information.

  Next, the second device information search unit 533 calculates device information around a predetermined period from the time information included in the device information extracted by the first device information search unit 532 in order to calculate the electricity bill from the two pieces of device information. Is specified as the second device information. When calculating the electricity bill for a period of one month, the device information near one month before is searched from the time information of the first device information. Next, the electricity bill calculation unit 534 calculates the electricity bill of the electrical device from the two pieces of device information of the first device information and the second device information. As a calculation method of the electricity cost, for example, as shown in the calculation formula 1 in FIG. 7, the difference between the accumulated electricity costs between two points is divided by the difference in storage time, thereby calculating the average electricity cost for one day. it can. As shown in the right diagram of FIG. 11, the calculation period is displayed based on the electricity cost per day from the date selected by the user and the time information of the two pieces of device information used for the calculation, as shown in the right diagram of FIG. 11. can do.

  Note that the control program for performing the processing of step S06 and step S14 is stored in a storage device such as the device information storage unit 331 or the device information storage unit 531.

  Note that the specific embodiments or examples made in the section for carrying out the invention are to clarify the technical contents of the present invention, and are limited to such specific examples. The present invention should not be interpreted in a narrow sense, and various modifications can be made within the scope of the spirit of the present invention and the following claims.

  The electricity cost calculation system, the electricity cost calculation device, and the electrical device according to the present invention are useful as an electricity cost calculation system that reads data from an electrical device that stores data to the outside of the electrical device and calculates the electricity cost.

DESCRIPTION OF SYMBOLS 1 Electricity cost calculation system 2 Electric equipment 21 Equipment control part 211 Measurement part 212 Cumulative value accumulation part 22 Equipment communication part 221, 311, 411 NFC circuit 3 Electricity cost calculation device 31 Calculation communication part 32, 52 Clock part 33 Calculation control part 331 531 Device information storage unit 332, 532 First device information search unit 333, 533 Second device information search unit 334, 534 Electricity cost calculation unit 4 Mobile terminal device 41 Proximity communication unit 42 Terminal communication unit 43 Terminal control unit 431 Memory unit 44 display unit 45 operation unit 5 server device 51 server communication unit 53 server control unit 6 network

Claims (9)

An electrical cost calculation system comprising: an electrical device; and an electrical cost calculation device that calculates an electrical cost of the electrical device based on a cumulative value of usage values of the electrical device,
The electrical equipment is
A measurement unit that measures the usage value of electrical equipment;
A cumulative value accumulating unit for accumulating a cumulative value of usage values measured by the measuring unit;
A device communication unit that transmits the cumulative value to the electricity bill calculation device;
The electricity bill calculation device is:
A calculation device communication unit that irregularly obtains a cumulative value from the electrical device;
A clock unit for measuring time information at which the cumulative value is acquired;
A device information storage unit that stores two or more pieces of device information including a cumulative value acquired by the calculation device communication unit and time information measured by the clock unit;
From the device information stored in the device information storage unit, a first device information search unit that identifies one arbitrary device information as the first device information,
Second device information that identifies device information including time information closest to a past time for a predetermined period from a time indicated by time information included in the first device information specified by the first device information search unit as second device information. A search section;
An electricity cost calculator that calculates the electricity cost of the electrical device from the cumulative value included in the first device information and the second device information;
An electricity bill calculation system comprising: A server for calculating the electricity cost of the electrical device based on a cumulative value of usage values of the electrical device, and an electricity cost calculation system comprising a portable terminal capable of communicating with the server,
The electrical equipment is
A measurement unit for measuring the usage value of the electrical device;
A cumulative value accumulating unit for accumulating the cumulative value of the usage values;
A device communication unit that transmits the accumulated value accumulated in the accumulated value accumulation unit by proximity wireless communication,
The portable terminal is
A proximity communication unit that irregularly acquires a cumulative value from the electrical device by proximity wireless communication;
A terminal communication unit that transmits the cumulative value to the server,
The server
A server communication unit for acquiring a cumulative value transmitted from the mobile terminal;
A clock unit for measuring time information at which the cumulative value is acquired;
A device information storage unit that stores two or more pieces of device information including a cumulative value acquired by the server communication unit and time information measured by the clock unit;
From the device information stored in the device information storage unit, a first device information search unit that identifies one arbitrary device information as the first device information,
Second device information that identifies device information including time information closest to a past time for a predetermined period from a time indicated by time information included in the first device information specified by the first device information search unit as second device information. A search section;
An electricity cost calculator that calculates the electricity cost of the electrical device from the cumulative value included in the first device information and the second device information;
Electricity bill calculation system with The portable terminal further includes a memory unit that stores at least a user ID specified by the user,
The terminal communication unit transmits a user ID stored in the memory unit,
The server communication unit acquires the user ID,
The device information storage unit stores the user ID as device information, whereby the first device information search unit and the second device information search unit search for device information for each user ID.
The electricity bill calculation system according to claim 2. The electrical device includes a plurality of measurement units,
The cumulative value accumulation unit accumulates a total of a plurality of usage values as a cumulative value.
The electricity bill calculation system according to claim 1 or 2. The portable terminal further includes a display unit that displays a proximity instruction screen for instructing a user to bring the proximity communication unit and the electrical device closer to communicate with the electrical device,
The first device information search unit identifies the device information stored in the device information storage unit when performing close proximity wireless communication from the screen displayed by the display unit as first device information.
The electricity bill calculation system according to any one of claims 2 to 4. The mobile terminal further includes a display unit that displays a calendar selection screen for the user to select a desired date,
The terminal communication unit transmits the date selected by the user from the calendar selection screen displayed on the display unit,
The first device information search unit identifies device information of a date received from the mobile terminal as first device information.
The electricity bill calculation system according to any one of claims 2 to 4. A calculation device communication unit that irregularly obtains a cumulative value of usage values of electrical equipment from the electrical equipment; and
A clock unit for measuring time information at which the cumulative value is acquired;
A device information storage unit for storing two or more pieces of device information including the cumulative value acquired by the calculation device communication unit and the time information measured by the clock unit;
From the device information stored in the device information storage unit, a first device information search unit that identifies any device information as first device information,
Second device information that identifies device information including time information closest to a past time for a predetermined period from a time indicated by time information included in the first device information specified by the first device information search unit as second device information. A search section;
An electricity cost calculator that calculates the electricity cost of the electrical device from the cumulative value included in the first device information and the second device information;
An electricity bill calculation device comprising: A calculation device communication step for acquiring a cumulative value of the usage value of the electric device from the electric device irregularly; and
A clock step for measuring time information at which the cumulative value is acquired;
First device information search step for identifying any device information as first device information from device information stored in a device information storage unit that stores at least two pieces of device information including at least the accumulated value and the time information. When,
Second device information that identifies device information including time information closest to a past time for a predetermined period from the time indicated by the time information included in the first device information specified in the first device information search step as second device information. A search step;
An electricity cost calculating step of calculating an electricity cost of the electrical device from a cumulative value included in the first device information and the second device information;
Electric bill calculation method. A storage device storing a program for executing the electricity bill calculation method according to claim 8.

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