JP2013152122A - Watthour meter and power measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately identify electric energy which is used within a fixed measuring term, without increasing a burden on a meter reader.SOLUTION: A watthour meter 100 is configured to receive a standard radio wave transmitted from a predetermined transmitter station, to generate a two-dimensional code indicating electric energy flowing from a primary side to a secondary side within a measuring term, specified by a meter-reading date, from a predetermined measurement starting date to a measurement ending date after the lapse of a predetermined time on the basis of the date counted based on the received standard radio wave, and to display the generated two-dimensional code on a display screen 113.

Description

  The present invention relates to a watt-hour meter that measures the amount of power supplied to a load, and a power metering system including the watt-hour meter.

  The operation of reading the number of instructions of a watt hour meter installed in a facility with a load that consumes power such as a home or factory, so-called meter reading operation, is performed every predetermined period such as every month. Conventionally, this meter reading operation is realized by, for example, a meter reader visiting each facility, reading the number of watt hour meters installed in each facility by visual observation, and driving the number of instructions read into the handy terminal. Yes. Conventionally, when the meter reading operation is performed every predetermined period, such as every month, the monthly meter reading date has been set based on the reference meter reading date designated by the electric power company.

  After the meter reading operation is completed, connect the handy terminal to a cradle, which is a dedicated terminal for sending the meter reading result to the server device, and send the meter reading result input to the handy terminal to the server device via the cradle. To make a meter reading report.

  As described above, in the conventional technology, the reading number of the watt hour meter is visually read, or the reading number is manually input by the meter reader, thereby causing a “reading error” or “ Incorrect needle due to "error" may occur. When an erroneous meter reading occurs, an electric user who is a customer of an electric power company is inconvenienced or the trust of the electric user with respect to the electric company is reduced due to correction of a bill based on the erroneous meter reading.

  In addition, since “electric power” is not a visible product, it is difficult to verify the number of past instructions with the conventional technology. For this reason, for example, when a customer who has a question or suspicion about the contents of a bill, such as the amount of money or usage, it is difficult to grasp the actual results. It is difficult to dispel the suspicion of meter reading.

  In order to solve such problems, conventionally, for example, a reading code is displayed next to the number of instructions of the measuring instrument, the value of the measuring instrument is encoded, or the instruction number of the measuring instrument is two-dimensionally specified by an external command. There has been a technique of encoding and displaying (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3 below). Conventionally, for example, barcode data indicating the flow rate of water, gas, electricity, etc. detected by the flow rate detection device is displayed as a barcode, and the barcode displayed on the flow rate detection device is read using a terminal device. (For example, refer to Patent Document 4 below).

JP 2006-308530 A JP 2008-107250 A JP 2009-176206 A JP-A-7-225890

  However, the conventional techniques including Patent Documents 1 to 4 described above have a problem that it is difficult to make the measurement period constant. Specifically, for example, when the next meter reading date at a facility that performs meter reading every month falls on a specific day such as a weekend, holiday, etc., the actual next meter reading date is exactly one month from the previous meter reading date. There is a problem that it is difficult to make the measurement period uniform because it may be mixed with the later date.

  As a countermeasure, for example, if the actual next meter reading date is taken exactly one month after the previous meter reading date without taking into account specific days such as weekends and holidays, There is a problem that it takes a burden. Specifically, in this case, for example, in working conditions, it is not possible to define the day of the week for a meter reading holiday, so depending on the previous meter reading date, you must work on a specific day such as a weekend, public holiday, The problem arises that the meter reader is burdened.

  In the above-described conventional technology, the amount of power used in each time zone is measured based on the time measured by each watt-hour meter. For this reason, for example, when the power supply and demand contract between the power company and the customer is a contract content in which the unit price varies depending on the time zone, if the time measured by each watt-hour meter deviates from the exact time, There was a problem that the amount of power used in each time zone could not be specified accurately.

  Further, in the conventional technique described above, there is a problem that it is difficult to immediately report the examination result because it is necessary to connect the handy terminal to the cradle when reporting the meter reading. For this reason, for example, when there is an inquiry from a customer, it takes time until the person receiving the inquiry confirms the latest screening results, and there is a problem that the inquiry from the customer cannot be answered promptly. .

  As a countermeasure, for example, when a communication function is added to the handy terminal, the structure of the handy terminal becomes complicated, increases in size, or increases in weight, which increases the burden on the meter reader carrying the handy terminal. There is a problem that it is not suitable for carrying.

  In order to eliminate the above-described problems caused by the prior art, the present invention provides a watt-hour meter and a power metering system that can accurately specify the amount of power used in a certain metering period without increasing the burden on the meter reader. The purpose is to provide.

  In order to solve the above-mentioned problems and achieve the object, the watt-hour meter according to the present invention is transmitted from a measuring means for measuring an integrated value of the amount of power flowing from the primary side to the secondary side, and a predetermined transmitting station. A time measuring means for measuring the time and date based on the received standard time, and a time measuring end time after a predetermined time has elapsed from a predetermined time starting date based on the time measured by the time measuring means. Code generation means for generating a two-dimensional code indicating the amount of power measured by the measurement means during the measurement period, and a display means for displaying the two-dimensional code generated by the code generation means on the display screen. , Provided.

  The watt-hour meter according to the present invention is characterized in that, in the above invention, the code generation means generates the two-dimensional code including information indicating at least one of the timing start date and time and the timing end date and time. To do.

  In addition, the watt hour meter according to the present invention includes a setting unit that accepts a setting input of meter reading date and time in the above invention, and the code generating unit includes the meter reading date and time when the setting unit accepts input and the meter reading date and time. A two-dimensional code is generated, which is shown in association with an integrated value of the electric energy measured by the measuring means.

  Further, in the watt-hour meter according to the present invention, in the above invention, the setting unit accepts setting input of a plurality of meter reading dates and times, and the code generating unit receives the meter reading date and time when the setting unit accepts inputs. A two-dimensional code is generated in which each meter reading date and time and an integrated value of the electric energy measured by the measuring means at the meter reading date and time are associated with each other.

  Further, the watt hour meter according to the present invention comprises storage means for storing information indicating a transition in the measurement period of the integrated value of the electric energy measured by the measurement means in the above invention, and the code generation means comprises: A two-dimensional code including information stored in the storage unit is generated.

  In the watt-hour meter according to the present invention as set forth in the invention described above, the code generation means predetermines information contained in the two-dimensional code for the terminal device that has read the two-dimensional code generated by the code generation means. A two-dimensional code including a source code to be transmitted to the server device and identification information of a watt-hour meter that is a generation source of the two-dimensional code is generated.

  In the watt-hour meter according to the present invention as set forth in the invention described above, the display means displays a number indicating the integrated value of the electric energy measured by the measuring means and the two-dimensional code on the display screen. Features.

  The power metering system according to the present invention includes a portable terminal including the watt-hour meter, a reading unit that reads a two-dimensional code, and a communication unit that transmits code information indicated by the read two-dimensional code to an external device. And a server device that receives and stores the code information transmitted by the mobile terminal device.

  According to the watt-hour meter and the power metering system according to the present invention, it is possible to accurately specify the amount of power used in a certain metering period without increasing the burden on the meter reader.

It is explanatory drawing which shows the external appearance of the watt-hour meter of embodiment concerning this invention. It is explanatory drawing which shows the hardware constitutions of the watt-hour meter of embodiment concerning this invention. It is a block diagram which shows the functional structure of the watt-hour meter of embodiment concerning this invention. It is a flowchart (the 1) which shows the process sequence of the watt-hour meter of embodiment concerning this invention. It is a flowchart (the 2) which shows the process sequence of the watt-hour meter of embodiment concerning this invention. It is a flowchart (the 3) which shows the process sequence of the watt-hour meter of embodiment concerning this invention.

  Exemplary embodiments of a watt-hour meter and a power metering system according to the present invention will be described below in detail with reference to the accompanying drawings.

(Appearance of electricity meter)
First, the external appearance of the watt hour meter according to the embodiment of the present invention will be described. FIG. 1 is an explanatory diagram showing an external appearance of a watt-hour meter according to an embodiment of the present invention. In FIG. 1, a watt-hour meter 100 according to an embodiment of the present invention is fixed to a wall surface such as a wall of a building such as a house by using a mounting screw (not shown).

  The watt-hour meter 100 includes a main body 110 and a connection terminal block 120. The connection terminal block 120 includes first terminals 1S, 2S, and 3S and second terminals 1L, 2L, and 3L. In this embodiment, three first terminals 1S, 2S, and 3S and second terminals 1L, 2L, and 3L are provided.

  The first terminals 1S, 2S, and 3S are each connected to a power source via an electric wire (both are not shown). The power source is a power supply source for the watt-hour meter 100, and the first terminals 1S, 2S, and 3S in this embodiment are connected to a power line or a wire connected to a power transmission line. The second terminals 1L, 2L, 3L are each connected to a load. The load can be an electrical device that uses the power passed through the watt hour meter 100 or a facility that uses electricity.

  The main body 110 has a box shape and includes a casing 111 that houses a metering mechanism (see reference numeral 210 in FIG. 2) that measures the integrated value of the amount of power supplied to the watthour meter 100. The watt-hour meter 100 according to the embodiment of the present invention can be realized by, for example, a so-called electronic watt-hour meter 100 that statically multiplies current by a multiplier. A method for measuring the amount of electric power supplied to the watt hour meter 100 by the metering mechanism in the electronic watt hour meter 100 (hereinafter simply referred to as “watt hour meter 100”) will be described later (see FIG. 2).

  A display screen 112 and a display screen 113 are provided on the front side of the housing 111. The display screen 112 and the display screen 113 display information on the amount of power measured by the measuring mechanism unit. Specifically, the display screen 112 and the display screen 113 display the integrated value of the electric energy measured by the measuring mechanism unit. More specifically, the display screen 112 displays a numerical value indicating the integrated value of the electric energy measured by the measuring mechanism unit, and the display screen 113 includes information indicating the integrated value of the electric energy measured by the measuring mechanism unit. Display the dimension code. The display screen 113 can be provided on the front side of the housing 111 and in the vicinity of the display screen 112, for example.

  The two-dimensional code can be realized by, for example, a QR code (registered trademark). The two-dimensional code is not limited to the QR code, and may be realized by various known two-dimensional codes such as a micro QR code, an SP code, a Veri code, a Maxi code, and a CP code. . The two-dimensional code is not limited to a matrix type, and may be a stack type two-dimensional code.

  In addition, the watt-hour meter 100 includes an operation unit (see reference numeral 230 in FIG. 2). The operation unit is operated by a meter reader or the like when setting a meter reading date and time or inputting a meter reading instruction during meter reading work. The meter reading date and time is information for designating the start date and time (measurement start date and time) of the electric energy metering period, and can be arbitrarily set by a meter reader or the like. Specifically, the meter reading date and time can be set, for example, as “midnight on the 15th of every month”. The meter reading date / time is not limited to specifying the measurement start date / time, but may be the one specifying the end date / time of the measurement period (measurement end date / time). Further, the meter reading date and time may designate both the measurement start date and time and the measurement end date and time.

  Specifically, the operation unit can be realized by, for example, a numeric keypad or an enter key for inputting a specific code. Or, for example, the operation unit is, for example, an operation key or numeric keypad for specifying the input operation content such as a “meter reading date setting” key, “meter reading date addition” key, “meter reading date change” key, etc. It may be realized.

  Alternatively, the operation unit may be realized by, for example, a liquid crystal display that displays operation keys or numeric keys for designating input operation content, and a touch panel stacked on the liquid crystal display. In this case, by changing the display content of the liquid crystal display, a plurality of types of input operations can be performed via the touch panel without providing a plurality of keys.

(Hardware configuration of watt-hour meter 100)
FIG. 2 is an explanatory diagram showing a hardware configuration of the watt-hour meter 100 according to the embodiment of the present invention. In FIG. 2, the watt hour meter 100 according to the embodiment of the present invention includes a measuring mechanism unit 210, a time measuring mechanism unit 220, an operation unit 230, a microcomputer 240, and a display unit 250.

  The metering mechanism 210 measures the amount of power that has flowed from the primary side to the secondary side of the watt-hour meter 100. The weighing mechanism unit 210 can be configured by, for example, an input conversion unit 211, a multiplication processing unit 212, and a frequency dividing circuit unit 213. The input conversion unit 211 is configured to change the voltage level and the current level of the supplied power (see “V” and “I” in FIG. 2) between the first terminal and the second terminal. Convert to voltage level and current level.

  The multiplication processing unit 212 generates a pulse signal that is proportional to the amount of supplied electric power by multiplication processing based on the voltage level and the current level converted by the input conversion unit 211. The multiplication method of the multiplication processing unit 212 may be an analog multiplication method (time division multiplication method) or a digital multiplication method (Hall element multiplication method or A / D conversion multiplication method).

  For example, when performing a multiplication process by an analog multiplication method, the multiplication processing unit 212 performs pulse width modulation of a basic clock signal of several tens of kHz with an input voltage, and a pulse amplitude corresponding to the value of the input current for each pulse. Create a pulse train. Each pulse width is proportional to the instantaneous voltage value, and the amplitude of each pulse is proportional to the instantaneous current value. The multiplication processor 212 calculates the product of the instantaneous voltage and current of each pulse in the created pulse train (the pulse area indicated by the pulse width proportional to the instantaneous voltage and the amplitude proportional to the instantaneous current) as the instantaneous power. A pulse signal corresponding to the calculated instantaneous power is generated.

  Further, for example, when performing multiplication processing by a digital multiplication method (Hall element multiplication method), the multiplication processing unit 212 generates a pulse signal obtained by digitally converting the voltage waveform of the Hall voltage corresponding to electric power. In the digital multiplication method (Hall element multiplication method), a current (Hall current: Ib) proportional to the instrument input voltage flows between the Hall element input terminals, and a magnetic flux (B) proportional to the load current flows on the sensor surface of the Hall element. Is used, the Hall effect is generated as a physical characteristic of the Hall element, in which a Hall voltage proportional to the product of the magnetic flux generated between the output terminals and the Hall current is generated.

  Further, for example, when performing a multiplication process by a digital multiplication method (A / D conversion multiplication method), the multiplication processing unit 212 uses an A / D converter to convert voltage and current waveforms, which are input elements of the watt-hour meter 100, respectively. Digital conversion is performed with high resolution, the product of the instantaneous voltage value and the instantaneous current value converted into digital is calculated as the instantaneous power, and a pulse signal corresponding to the calculated instantaneous power is generated. A method of measuring the integrated amount of electric power by each multiplication method such as an analog multiplication method or a digital multiplication method can be easily realized by using various known techniques, and thus description thereof is omitted.

  The frequency dividing circuit unit 213 converts the clock frequency of the pulse signal generated by the multiplication processing unit 212 to a predetermined clock frequency lower than the clock frequency. The measuring mechanism unit 210 performs integration processing based on the pulse signal converted by the frequency dividing circuit unit 213 to a predetermined clock frequency, and outputs an integrated value of the electric energy.

  The timing mechanism unit 220 receives a standard radio wave transmitted from a predetermined transmission station, and counts the date and time based on the received radio wave. The timekeeping mechanism 220 can be constituted by, for example, an antenna 221, a receiver 222, and a microprocessor 223. The antenna 221 receives a standard radio wave in which a time code indicating various data such as time including date and time is amplitude-modulated. The time code is a 1 Hz pulse signal, and the moment of rise of the pulse indicates the change of seconds. The antenna 221 is, for example, a JJY mountain peak or mountain standard radio wave transmission station (37 ° 22'10 "N, 140 ° 51'9" E) or a steel mountain standard radio wave transmission station (33 ° 27'56 "N , 130 ° 10′34 ″ E) or other standard radio waves transmitted from a transmitting station are received.

  The receiver 222 amplifies the standard radio wave received by the antenna 221 and outputs the amplified standard radio wave to the microprocessor 223. The microprocessor 223 performs a decoding process based on the standard radio wave output from the receiver 222 and outputs a time signal as a decoding result to the microcomputer 240. For example, the time measuring mechanism 220 outputs a time signal to the microcomputer 240 at all times. The operation unit 230 accepts an input operation by a meter reader or the like and outputs a signal corresponding to the accepted input operation to the microcomputer 240. For example, the operation unit 230 outputs a signal indicating a code input by operating a numeric keypad to the microcomputer 240.

  The microcomputer 240 outputs an integrated value of the electric energy output from the measuring mechanism unit 210, a time signal output from the timing mechanism unit 220, and a signal output from the operation unit 230 in response to an input operation accepted by the operation unit 230. The display unit 250 is driven and controlled based on the above. The microcomputer 240 includes, for example, an arithmetic unit, a register for storing instructions and information, a peripheral circuit, and the like. In addition, the microcomputer 240 includes a storage device. The microcomputer 240 stores information in accordance with the content of the input operation received by the operation unit 230 in the storage device.

  Specifically, for example, when the operation unit 230 receives an input operation for setting the meter reading date and time, the microcomputer 240 stores the meter reading date and time when the input is accepted in the storage device. Specifically, for example, the microcomputer 240 outputs the electric power output from the measuring mechanism unit 210 every time a preset meter reading date and time arrives based on the time signal output from the time measuring mechanism unit 220, for example. The integrated value of the quantity is stored in the storage device.

  The display unit 250 displays information regarding the amount of power measured by the metering mechanism unit 210. The display unit 250 always displays, for example, information related to the amount of power measured by the measuring mechanism unit 210. Alternatively, the display unit 250 displays information on the amount of power measured by the measuring mechanism unit 210 only when the operation unit 230 receives a predetermined input operation such as an input operation of a specific code. Also good.

  The display unit 250 includes a display control unit 251, a display screen 112, and a display screen 113. The display unit 250 displays predetermined information on the display screen 112 or the display screen 113 by drivingly controlling the display screen 112 or the display screen 113 by the display control unit 251 based on a control signal from the microcomputer 240.

  The display screen 112 displays a screen corresponding to the input operation received by the operation unit 230, for example. Further, the display screen 112 displays a numerical value indicating an integrated value of the electric energy stored in a storage device included in the microcomputer 240, for example. For example, the display screen 112 displays a numerical value indicating the integrated value of the electric energy stored in the storage device in association with the date and time (meter reading date and time) when the integrated value of the electric energy is acquired.

  The display screen 113 displays a two-dimensional code including information indicating the integrated value of the electric energy measured by the measuring mechanism unit 210. The display screen 113 displays a two-dimensional code including, for example, a numerical value indicating the integrated value of the electric energy stored in the storage device and the date and time (meter reading date and time) when the integrated value of the electric energy is acquired. The two-dimensional code indicates, for example, the integrated value of the watt-hour meter 100 at midnight of the meter reading date and time.

(Functional configuration of watt-hour meter 100)
Below, the functional structure of the watt-hour meter 100 of embodiment concerning this invention is demonstrated. FIG. 3 is a block diagram showing a functional configuration of the watt-hour meter 100 according to the embodiment of the present invention. 3, the watt-hour meter 100 according to the embodiment of the present invention includes a measuring unit 301, a time measuring unit 302, a setting unit 303, a setting storage unit 304, a storage unit 305, a code generation unit 306, Display unit 250.

  The metering unit 301 measures the amount of power flowing from the primary side to the secondary side of the watt-hour meter 100. The metering unit 301 can be realized, for example, by the metering mechanism unit 210 described above, and by acquiring the integrated value of the amount of power flowing from the primary side to the secondary side of the watt hour meter 100 by the metering mechanism unit 210, The amount of power flowing from the primary side to the secondary side of the watt-hour meter 100 can be measured. The time measuring unit 302 receives a standard radio wave transmitted from a predetermined transmitting station, and measures the date and time based on the received standard radio wave. The timekeeping unit 302 can be realized by the timekeeping mechanism 220 described above, for example.

  The setting unit 303 accepts a setting input for meter reading date and time. The setting unit 303 can be realized by, for example, the above-described operation unit 230 and the microcomputer 240 that receives an output signal from the operation unit 230. The meter reading date and time defines a measurement period during which the amount of power flowing from the primary side to the secondary side of the watt hour meter 100 is measured. For example, the start date and time of the measurement period (measurement start date and time) and the end date and time of the measurement period (measurement) It can be determined by designating at least one of (end date and time).

  The measurement period is a period from a predetermined measurement start date and time to a measurement end date and time after a predetermined time has elapsed, and can be a period such as one month, for example. The measurement period can be arbitrarily set by the power company or the user (customer) of the power. Specifically, the measurement period can be arbitrarily set, for example, by receiving setting input of meter reading date and time in the operation unit 230 described above.

  For example, the setting unit 303 can accept the setting input of the meter reading date and time by accepting a predetermined input operation by a meter reader or the like in the operation unit 230. Specifically, for example, setting unit 303 accepts input of numbers “15” and “0000” by operating the numeric keypad after operating the operation unit 230 to input a specific code. In this case, the setting input is accepted with “0:00 am on the 15th of every month” as the meter reading date and time.

  Moreover, the setting part 303 may receive the setting input of several meter-reading date. Specifically, the setting unit 303, for example, receives “15” and “0000” by operating the numeric keypad after receiving the input of a specific code different from the code for receiving the setting input of the meter reading date and time in the operation unit 230. In addition to the already set meter reading date and time, the setting input is accepted with “0:00 am on the 15th of every month” as the meter reading date and time.

  The setting unit 303 may accept a setting input for changing a plurality of meter reading dates and times. Specifically, the meter reading date and time is, for example, an operation of accepting an input of a specific code different from a code for accepting setting input or additional input of the meter reading date and time and selecting the meter reading date and time to be changed in the operation unit 230. After accepting, when the input of the numbers “15” and “0000” is accepted by operating the numeric keypad, “0:00 on the 15th of every month” is set as a new meter reading date and time instead of the selected meter reading date and time. Accept input.

  The storage unit 304 stores information related to the meter reading date and time when the setting unit 303 has received a setting input. When the setting unit 303 accepts setting input of a plurality of meter reading dates and times, the storage unit 304 stores information regarding each of the plurality of meter reading dates and times. In addition to the meter reading date and time, the storage unit 304 may store information related to the date and time when the setting input of the meter reading date and time is accepted. In this case, for example, when receiving a setting input of the same meter reading date and time as the already stored meter reading date and time, the storage unit 304 stores information related to the meter reading date and time when the setting input is received.

  The storage unit 305 stores information indicating the transition of the electric energy measured by the measuring unit 301 during the measurement period. The storage unit 305 stores information indicating the transition of the electric energy measured by the measuring unit 301 during the measurement period from the meter reading date and time to the next meter reading date and time based on the meter reading date and time when the setting unit 303 has received the setting input. . For example, the storage unit 305 continuously stores the amount of power measured by the measuring unit 301. Or the memory | storage part 305 memorize | stores every time predetermined time passes since it memorize | stored last time like the electric energy which the measurement part 301 measured, for example every 10 minutes, every hour, etc. Also good.

  Specifically, for example, the storage unit 305 stores the integrated value of the electric energy measured by the measuring unit 301 in association with the date and time when the electric energy was measured, every hour during the measurement period. The metering unit 301 may store an integrated value of the electric energy measured by the metering unit 301 every predetermined time, such as “every hour” or “every 10 minutes”, or continuously. You may remember. The storage unit 305 can be realized by, for example, a storage device included in the microcomputer 240 described above.

  The code generation unit 306 generates a two-dimensional code indicating the integrated value of the electric energy measured by the measurement unit 301 during the measurement period, based on the date and time measured by the time measurement unit 302. The code generation unit 306 can be realized by the microcomputer 240 described above, for example. The code generation unit 306 generates a two-dimensional code each time the meter reading date / time set by receiving the setting input in the setting unit 303 is received, such as “0:00 am on the 15th of every month”.

  When the setting unit 303 accepts an input of meter reading date and time, the code generation unit 306 generates a two-dimensional code every time the meter reading date and time that the setting unit 303 accepts input arrives. For example, every time the meter reading date / time arrives, the code generation unit 306 acquires the integrated value of the electric energy at the meter reading date / time from the measuring unit 301 and generates a two-dimensional code indicating the integrated value acquired from the measuring unit 301. In this embodiment, the meter reading date / time may specify the start date / time of the measurement period (measurement start date / time), or may specify the end date / time of the measurement period (measurement end date / time). . For example, the code generation unit 306 generates a two-dimensional code including information indicating at least one of the measurement start date and time and the measurement end date and time.

  In addition, the code generation unit 306 generates a two-dimensional code including information indicating the meter reading date and time. That is, the code generation unit 306 generates a two-dimensional code that indicates the integrated value of the electric energy and the information (the meter reading date / time) that indicates when the integrated value is the integrated value at the meter reading date / time. Thereby, it is possible to reliably guide when the integrated value of the electric energy included in the two-dimensional code is the numerical value at the meter reading date and time. When a plurality of meter reading dates / times are set, the code generation unit 306 generates a two-dimensional code indicating the integrated value of the watt-hour meter 100 at each meter reading date / time in association with each meter reading date / time.

  The code generation unit 306 generates a two-dimensional code including a contract number, contract information, and instrument information. The contract number is a unique number for each electric power receiving contract between the electric power company and the customer (contractor) who uses the electric power supplied by the electric power company, and the electric power receiving contract is specified by specifying the contract number. The contents of can be specified. The contract information can be realized by, for example, a customer's name, the customer's address (installation location of power usage equipment such as a house), contract capacity, contract menu, and the like. The meter information is information specific to each watt-hour meter 100 (identification information of the watt-hour meter 100), and can be set in advance when the watt-hour meter 100 is manufactured, for example.

  Alternatively, the meter information may be point information indicating an installation point of the electricity meter 100, for example. In this case, for example, a GPS receiver is provided for each watt-hour meter 100, and the code generation unit 306 generates a two-dimensional code including the positioning result output from the GPS receiver as instrument information. The GPS receiver can be configured by an antenna, an RF block, a baseband IC, and the like. A positioning method using a GPS system and a GPS receiver can be easily realized using a known technique, and thus the description thereof is omitted.

  The code generation unit 306 also includes a two-dimensional code including a source code that causes the terminal device that has read the two-dimensional code generated by the code generation unit 306 to transmit information included in the two-dimensional code to a predetermined server device. Generate code. Whether or not the source code matches the predetermined information stored in advance in the terminal device of the meter reader and the information included in the two-dimensional code in the terminal device of the meter reader who has read the two-dimensional code. It may include a program that can be used to verify such a situation.

  In addition, the source code includes a program for storing the information included in the read two-dimensional code in the terminal device of the meter reader who has read the two-dimensional code only when it is determined that the source code matches. Also good. The source code is a result of collation between the predetermined information stored in advance in the terminal device and the information included in the two-dimensional code, and as a result, the predetermined information stored in advance in the terminal device of the meter reader, If the information included in the two-dimensional code does not match, a program that interrupts transmission of the information included in the two-dimensional code may be included.

  The predetermined server device can be realized, for example, by a computer device that manages the billing according to the usage amount of the power supplied by the power company and the usage amount managed by the power company. The predetermined server device associates, for example, the customer's name, the customer's address (installation location of the power usage facility such as a house), instrument information, the amount of power used for each predetermined period, the billing amount, the payment status for the billing, etc. It has a database to memorize. The computer device that realizes the predetermined server device can be realized by a general-purpose computer device, for example. Since the computer device that realizes the predetermined server device can be easily realized by using a known technique, the description thereof is omitted.

  The source code is sent to the printer carried by the meter reader for information such as the contract number, contract information, and instrument information contained in the read two-dimensional code for the terminal device of the meter reader who has read the two-dimensional code. A program to be transmitted may be included. Information transmission from the meter reader terminal device to the printer can be realized, for example, by infrared communication. The printer that has received the information transmitted from the terminal device of the meter reader prints out “Notice of power consumption” or the like based on the received information. Since the configuration of the printer can be easily realized by using a known technique, the description thereof is omitted. In the embodiment according to the present invention, the power metering system according to the present invention can be realized by the watt-hour meter 100, the predetermined server device, and the terminal device of the meter reader.

(Processing procedure of watt-hour meter 100)
Below, the process sequence of the watt-hour meter 100 of embodiment concerning this invention is demonstrated. 4, 5 and 6 are flowcharts showing the processing procedure of the watt-hour meter 100 according to the embodiment of the present invention. In the flowchart of FIG. 4, first, the process waits until an operation for inputting the meter reading date / time is received (step S <b> 401: No). In step S401, for example, when the input operation of a specific code is received in the operation unit 230, it is determined whether or not the setting input of the meter reading date / time is received in the setting unit 303.

  In step S401, when an input operation for meter reading date / time is accepted (step S401: Yes), the meter reading date / time for which the input operation has been accepted is stored (step S402), and the series of processing ends. In step S402, the setting input is accepted when the setting unit 303 accepts a meter reading date / time setting input, for example, when the operation unit 230 accepts an input operation of a specific code and then receives a numeric input. Memorize the meter reading date and time.

  In the flowchart of FIG. 5, first, the meter reading date and time preset by the process shown in the flowchart of FIG. 4 based on the meter reading date and time stored in the storage unit 305 and the current time (date and time) measured by the timing unit 302. (Step S501: No). In step S501, when the meter reading date and time has arrived (step S501: Yes), an integrated value of the electric energy measured by the measuring unit 301 is acquired (step S502).

  Next, the integrated value of the electric energy acquired in step S502 is stored in the storage unit 305 in association with the meter reading date and time when the integrated value of the electric energy is acquired (step S503), and the series of processing ends. As a result, regardless of the meter reading date / time of the meter reader, the integrated value of the electric energy at the preset meter reading date / time can be acquired and stored.

  In the flowchart of FIG. 6, first, the process waits until a meter reading instruction is accepted (step S601: No). In step S601, for example, when an input operation instructing execution of meter reading is received, such as receiving a predetermined input operation in the operation unit 230, it is determined that a meter reading instruction has been received.

  When a meter reading instruction is accepted in step S601 (step S601: Yes), a meter reading result is acquired based on the information stored in the storage unit 305 (step S602). In step S602, for example, the power amount and the meter reading date / time stored before the date / time when the meter reading instruction is received and the date / time closest to the date / time when the meter reading instruction is received are acquired.

  In step S602, for example, when a plurality of meter reading dates / times are set, all of the electric energy and meter reading date / time stored in a predetermined period before the date / time when the meter reading instruction is accepted may be acquired. The predetermined period is a period that can be arbitrarily set by an electric power company, a meter reader, or the like, and can be set to, for example, one month.

  Next, based on the meter reading result acquired in step S602, a two-dimensional code is generated in the code generation unit 306 (step S603), and the two-dimensional code generated in step S603 is displayed by the display unit 250 (step S604). Then, a series of processing is completed. In step S604, for example, the two-dimensional code generated in step S603 is displayed on the display screen 113. In step S604, for example, the two-dimensional code generated in step S603 may be displayed on the display screen 113, and a numerical value indicating the meter reading result acquired in step S602 may be displayed on the display screen 112.

(Procedure for meter reading work)
Next, the procedure of the meter reading operation using the watt-hour meter 100 according to the embodiment of the present invention will be described. In the meter reading operation using the watt hour meter 100 according to the embodiment of the present invention, the meter reader first performs a predetermined input operation on the watt hour meter 100, thereby instructing the watt hour meter 100 to read the meter. Enter.

  The watt-hour meter 100 that has received the input of the meter-reading instruction acquires the stored meter-reading result by performing the above-described processing, generates a two-dimensional code based on the acquired meter-reading result, and generates the generated two-dimensional The code is displayed on the display screen 113. The meter reader reads the two-dimensional code displayed on the display screen 113 of the watt hour meter 100 using the terminal device of the meter reader. The terminal device for the meter reader can be realized by a portable terminal device such as a portable phone with a camera function.

  When performing meter-reading work using the watt-hour meter 100 according to the embodiment of the present invention, the meter-reader, prior to the meter-reading work, obtains a contract number, contract information, and instrument information regarding the watt-hour meter 100 to be metered. This is stored in the meter reader's terminal device. The method of storing the contract number, contract information, and meter information regarding the watt-hour meter 100 to be metered in the meter reader terminal device can be easily realized using various known techniques, and thus the description thereof is omitted. .

  The two-dimensional code includes a source code that causes the terminal device of the meter reader who has read the two-dimensional code to transmit information contained in the two-dimensional code to a predetermined server device. The read terminal device executes processing based on the source code. As a result, information such as the integrated value of the electric energy contained in the two-dimensional code, the meter reading date and time, the contract number, the contract information, and the instrument information can be transmitted to the computer device that realizes the predetermined server device.

  In a conventional meter reading operation, a meter reader goes around each facility, visually reads the number of instructions of the watt-hour meter 100 installed in each facility, and manually inputs the number of instructions read into the handy terminal. After checking the content of the meter read in the handy terminal, the meter reader connects the handy terminal to a predetermined PDA terminal, and outputs the information input to the handy terminal to the predetermined PDA terminal. The predetermined PDA terminal stores information output from the handy terminal. The meter-reader stores the integrated values of the plurality of watt-hour meters 100 in the PDA terminal. For example, when the meter-reading work for one day is completed, the information output from the handy terminal and stored by itself is stored in a personal computer or the like. It was transferred to the terminal device and memorized.

  On the other hand, in the meter reading operation using the watt-hour meter 100 according to the embodiment of the present invention, it is only necessary to read the two-dimensional code displayed on the watt-hour meter 100 by the terminal device of the meter reader. Information such as the integrated value, meter reading date and time, contract number, contract information, and instrument information can be transmitted to a predetermined server device. This makes it possible to reduce the weight of the equipment to be carried as compared to the case of carrying equipment such as a handy terminal or a PDA terminal.

  In addition, this can reduce the burden on the meter reader compared to the case of manually driving the number of instructions read into the handy terminal or the process of storing the information input to the handy terminal in the PDA terminal. Thus, the efficiency of the meter reading work and the time required for the meter reading work can be shortened. Further, by shortening the time required for the meter reading work, the meter reading staff can quickly complete the report of the content of the meter reading work as compared with the conventional meter reading work.

  The source code included in the two-dimensional code is a collation between predetermined information stored in advance in the terminal device and information included in the two-dimensional code in the terminal device of the meter reader who has read the two-dimensional code. As a result of verification, the contract number, contract information and instrument information stored in advance in the meter reader's terminal device, and the contract number, contract information, instrument information included in the read two-dimensional code, Only when they match, information such as the integrated value of the electric energy contained in the two-dimensional code, the meter reading date and time, the contract number, the contract information, and the instrument information can be transmitted.

  The predetermined server device stores the information transmitted from the terminal device of the meter reader in a database provided in the predetermined server device. Configuration of a portable terminal device such as a portable phone that realizes a meter reader terminal device, a two-dimensional code reading function of the portable terminal device such as the portable phone, and a portable device such as the portable phone The processing performed by the type terminal device by reading the two-dimensional code can be easily realized using a known technique, and thus the description thereof is omitted.

  When the watt-hour meter 100 receives an input of a meter reading instruction by performing a predetermined input operation by a meter reader or the like, it displays a two-dimensional code only for a predetermined display time after receiving the input of the meter reading instruction. To do. The predetermined display time can be set in advance by the administrator of the watt-hour meter 100, such as 1 minute, 5 minutes, or the like.

  When configured in this way, the meter reader does not display the two-dimensional code after a predetermined time without performing the input operation not to display the two-dimensional code displayed on the watt-hour meter 100 after the meter-reading operation is completed. Can be. Thereby, compared with the case where a two-dimensional code is always displayed, the risk of leakage of personal information due to reading of information included in the two-dimensional code by a third party can be reduced.

  In the above embodiment, the meter reader performs a predetermined input operation on the watt hour meter 100 during the meter reading operation so that the two-dimensional code is displayed on the watt hour meter 100. The method for displaying the two-dimensional code in 100 is not limited to this. For example, the watt-hour meter 100 is provided with a communication unit that communicates with a predetermined portable terminal device such as a portable phone carried by a meter-reader, and the watt-hour meter 100 and the meter-reader's terminal device are connected to each other. The two-dimensional code may be displayed on the watt-hour meter 100 by communicating between them.

  In this case, the communication unit can be configured by, for example, an antenna, a demultiplexing filter, a receiver, and a demodulation unit. In such a communication unit, the antenna receives a radio wave including an operation instruction signal output from an external device such as a handy terminal carried by the meter reader. The demultiplexing filter demultiplexes the operation instruction signal from the radio wave received by the antenna, and outputs the demultiplexed operation instruction signal to the receiver. The receiver amplifies the operation instruction signal output from the demultiplexing filter and outputs the amplified operation instruction signal to the demodulation unit. The demodulator demodulates the modulated operation instruction signal and outputs it to the microcomputer 240.

  Further, in this case, the communication unit in the watt-hour meter 100 is output from a predetermined terminal device by performing communication with the meter reader's terminal device, for example, according to the Bluetooth (registered trademark) standard. Radio waves including operation instruction signals can be received. Thereby, when the communication unit receives a radio wave including an operation instruction signal output from a predetermined terminal device, the watt-hour meter 100 generates and displays the two-dimensional code.

  In the above-described embodiment, the two-dimensional code including the integrated value of the electric energy at the preset meter-reading date and time is generated, and the electric power meter-reading work performed by reading the two-dimensional code has been described. The target is not limited to the amount of power. The meter-reading method of this invention can be applied to the meter-reading operation | work which uses the usage-amount in a predetermined period as a meter-reading object. It may be applied to work.

  As described above, the watt-hour meter 100 of this embodiment receives a standard radio wave transmitted from a predetermined transmission station, and starts predetermined metering based on the date and time counted based on the received standard radio wave. A two-dimensional code indicating the amount of power flowing from the primary side to the secondary side in the measurement period from the date and time until the measurement end date and time after a predetermined time elapses is generated, and the generated two-dimensional code is displayed on the display screen 113 It is characterized by that.

  According to the watt-hour meter 100 according to the embodiment of the present invention, a two-dimensional code indicating the amount of power during the measurement period can be displayed on the display screen 113. As a result, by reading the two-dimensional code displayed on the display screen 113 using a device capable of reading the code information indicated by the two-dimensional code, the power during the measurement period can be obtained regardless of the date and time when the meter reader performed the meter reading operation. The amount can be specified.

  Thus, according to the watt-hour meter 100 of the embodiment according to the present invention, the metering time is used without increasing the burden on the meter reading person by limiting the meter reading date and time in order to make the metering period constant. It is possible to accurately specify the amount of electric power. Further, according to the watt-hour meter 100 of the embodiment of the present invention, the two-dimensional code generated by the watt-hour meter 100 is read by the meter reader's terminal device, so that the integrated value of the power amount at the meter reading date and time is obtained. Therefore, it is possible to prevent erroneous needle reading.

  Further, according to the watt-hour meter 100 of the embodiment of the present invention, by specifying the measurement period according to the date and time measured based on the standard radio wave transmitted from a predetermined transmission station, The time setting operation can be made unnecessary, and the accuracy of the measurement period can be ensured. This makes it possible to accurately specify the amount of power used in a certain measurement period without increasing the burden on the meter reader.

  As described above, according to the watt-hour meter 100 according to the embodiment of the present invention, for example, the integrated value of the electric energy at a predetermined meter reading date and time is stored, such as “0:00 am on the 15th of every month”. In addition, by displaying the accumulated value of the stored electric energy, it is possible to eliminate problems caused by variations in the measurement period of the accumulated electric energy due to the difference between the standard meter reading date and the actual meter reading date. can do.

  In the watt-hour meter 100 of the above embodiment, the display screen 113 for displaying the two-dimensional code is provided separately from the display screen 112, but the present invention is not limited to this. For example, the two-dimensional code may be displayed on a part of the display screen 112 without providing the display screen 113. Alternatively, for example, the display screen 113 may not be provided, and the numerical value indicating the integrated value of the electric energy measured by the measurement mechanism unit 210 on the display screen 112 and the two-dimensional code may be switched and displayed.

  In addition, the watt-hour meter 100 according to the embodiment of the present invention is characterized in that it generates a two-dimensional code including information indicating at least one of the measurement start date and time and the measurement end date and time.

  According to the watt-hour meter 100 according to the embodiment of the present invention, it is possible to easily and accurately specify when the measured amount of electric power is based on the measurement start date and time or the measurement end date and time included in the two-dimensional code. Can do. In this way, the amount of power used in a certain metering period and the metering period during which the amount of power is metered can be accurately identified without increasing the burden on the meter reader, for example, by inputting information about the metering period for each meter reading operation. Can do.

  Further, the watt-hour meter 100 according to the embodiment of the present invention receives a setting input of the meter reading date and time, and indicates a two-dimensional code indicating the meter reading date and time when the input is received and the integrated value of the electric energy measured at the meter reading date and time. It is characterized by generating.

  According to the watt-hour meter 100 of the embodiment of the present invention, an arbitrary meter reading date and time is set according to the customer's request, the meter reader's schedule, and the like, for example, “15th of every month, midnight”. be able to. Thereby, it is possible to accurately specify the amount of electric power used in an arbitrary and fixed measurement period designated by the customer or the meter reader without increasing the burden on the meter reader.

  In addition, according to the watt-hour meter 100 of the embodiment of the present invention, once the meter reading date and time is set, the next time from the set meter reading date and time, regardless of the date and time when the meter reader performed the meter reading work, It is possible to specify the amount of electric power during the measurement period until the meter reading date and time. Thereby, it is possible to accurately specify the amount of electric power used in an arbitrary and fixed measurement period designated by the customer or the meter reader without increasing the burden on the meter reader.

  In addition, the watt-hour meter 100 according to the embodiment of the present invention receives setting input of a plurality of meter reading dates and times, and for each meter reading date and time when the input is received, the metering mechanism unit 210 measures each meter reading date and time and the meter reading date and time. It is characterized in that a two-dimensional code is generated in association with an integrated value of electric energy.

  According to the watt-hour meter 100 according to the embodiment of the present invention, for example, “15th of every month, 0:00 am”, “10th of every month, 10:00 pm”, “25th of every month, 17:00”, etc. A single watt-hour meter 100 can set a plurality of meter reading dates and times. As a result, the amount of power used in the metering period according to the customer's request can be accurately specified, and the customer's satisfaction with the power company can be improved.

  In addition, the watt-hour meter 100 according to the embodiment of the present invention is characterized in that it stores information indicating the transition of the measured electric energy during the measurement period, and generates a two-dimensional code including the stored information.

  According to the watt-hour meter 100 according to the embodiment of the present invention, it is possible to accurately identify the amount of power used in the measurement period and accurately identify the transition of the amount of power used in the measurement period. The actual amount of power used by customers can be ascertained. As a result, when a customer inquires about the contents of a bill, such as the amount of money and usage, it is possible to respond based on accurate information based on actual results, and to improve customer satisfaction with electric power companies. be able to.

  Further, according to the watt-hour meter 100 of the embodiment of the present invention, the amount of power used by the customer is determined by time zone or day of the week based on the transition of the integrated value of the power used during the measurement period. Therefore, for each customer, a power charge menu suitable for the customer can be proposed based on the detailed data. As a result, customer satisfaction with the electric power company can be improved.

  The watt-hour meter 100 according to the embodiment of the present invention includes a source code that causes a terminal device that has read a generated two-dimensional code to transmit information included in the two-dimensional code to a predetermined server device, and A two-dimensional code including instrument information that is a generation source of the two-dimensional code is generated.

  According to the watt-hour meter 100 according to the embodiment of the present invention, the information included in the two-dimensional code is transmitted to a predetermined server device only by causing the terminal device to read the two-dimensional code displayed by the display unit. Can do. Thereby, the information regarding the exact electric energy which the customer used can be managed in a predetermined server apparatus, without increasing the burden of a meter reader.

  Moreover, according to the watt-hour meter 100 of this embodiment concerning this invention, the two-dimensional code containing the meter information used as the production | generation source of a two-dimensional code can be displayed. Thus, the integrated value of the electric energy used in a certain measurement period and the electric energy can be obtained without increasing the burden on the meter reader, for example, by inputting information for identifying the watt-hour meter 100 to be measured for each meter reading operation. It is possible to accurately specify the measurement period in which the integrated values of the values are measured.

  In addition, the watt-hour meter 100 according to the embodiment of the present invention is characterized in that the display screens 112 and 113 display a number indicating the integrated value of the electric energy measured by the measuring unit 301 and a two-dimensional code.

  According to the watt-hour meter 100 of the embodiment according to the present invention, the meter indicating the integrated value of the energy measured by the measuring unit 301 is recognized by the meter reader's terminal device, and the meter reader is confirmed by visual observation. Can do. As a result, for example, “the amount of power used in the previous metering period has been significantly increased or decreased” and “the power used in the previous metering period even though the power supply and demand contract has not been suspended.” Anomalies such as “no change in quantity” can be quickly discovered.

  Further, according to the watt-hour meter 100 of the embodiment of the present invention, the watt-hour meter 100 displays the number indicating the integrated value of the watt-hour measured by the weighing unit 301 on the display screen 112. The meter reader can visually confirm whether or not the integrated value has been correctly measured. As a result, it is possible to quickly find out whether there is no error in reading the two-dimensional code in the terminal device of the meter reader or whether the watt-hour meter 100 has a problem such as a failure. As a result, even if the meter reader does not perform a special inspection operation, it is possible to take a quick response in the case of a malfunction of the watt-hour meter 100, thereby improving customer satisfaction with the power company. be able to.

  In addition, the power metering system according to the embodiment of the present invention includes the watt-hour meter 100 and a meter reading terminal that reads a two-dimensional code and transmits code information indicated by the read two-dimensional code to a predetermined server device. And a server device that receives and stores the code information transmitted by the terminal device of the meter reader.

  According to the power metering system of the embodiment of the present invention, the two-dimensional code displayed by the watt-hour meter 100 is read by the meter reader terminal device, and the code information indicated by the read two-dimensional code is read by the meter reader terminal device. The code information transmitted from the meter to the predetermined server device and transmitted by the meter reader terminal device can be received and stored in the server device. Thus, it is possible to specify an accurate amount of electric power during the measurement period regardless of the date and time when the meter reader performs the meter reading operation without increasing the burden on the meter reader.

  As described above, the watt-hour meter and the power metering system according to the present invention are useful for the watt-hour meter for metering the amount of power supplied to the load and the power metering system including the watt-hour meter. It is suitable for a watt hour meter installed in a facility where the meter reading date and time is likely to vary depending on conditions and customer convenience, and a power metering system equipped with the watt hour meter.

DESCRIPTION OF SYMBOLS 100 Electricity meter 112, 113 Display screen 210 Measuring mechanism part 220 Time measuring mechanism part 230 Operation part 301 Measuring part 302 Time measuring part 303 Setting part 304 Setting storage part 305 Storage part 306 Code generation part 250 Display part

Claims (8)

A measuring means for measuring an integrated value of the amount of power flowing from the primary side to the secondary side;
A time measuring means for receiving a standard radio wave transmitted from a predetermined transmitting station and timing the date and time based on the received standard radio wave;
Code generation for generating a two-dimensional code indicating the amount of electric power measured by the measuring unit in a measuring period from a predetermined timing start date and time to a timing end date and time after a predetermined time has elapsed, based on the date and time measured by the timing unit Means,
A display means comprising a display screen, the display means for displaying the two-dimensional code generated by the code generation means on the display screen;
A watt hour meter characterized by comprising:   The watt-hour meter according to claim 1, wherein the code generation unit generates the two-dimensional code including information indicating at least one of the timing start date and time and the timing end date and time. A setting means for receiving setting input of the meter reading date and time,
The code generation unit generates a two-dimensional code indicating the meter reading date and time received by the setting unit in association with the integrated value of the electric energy measured by the metering unit at the meter reading date and time. The watt hour meter according to 1 or 2. The setting means accepts setting input of a plurality of meter reading dates and times,
The code generation unit generates a two-dimensional code indicating each meter reading date and time and an integrated value of the electric energy measured by the metering unit at the meter reading date and time for each meter reading date and time received by the setting unit. The watt-hour meter according to claim 3 characterized by things. Storage means for storing information indicating a transition in the measurement period of the integrated value of the electric energy measured by the measurement means;
The watt-hour meter according to claim 1, wherein the code generation unit generates a two-dimensional code including information stored in the storage unit.   The code generation means includes a source code that causes a terminal device that has read the two-dimensional code generated by the code generation means to transmit information included in the two-dimensional code to a predetermined server device, and the two-dimensional code The watt-hour meter according to any one of claims 1 to 5, wherein a two-dimensional code including identification information of a watt-hour meter as a generation source is generated.   The said display means displays the number which shows the integrated value of the electric energy which the said measurement means measured, and the said two-dimensional code on the said display screen, The Claim 1 characterized by the above-mentioned. Electricity meter. The watt-hour meter as described in any one of Claims 1-7,
A portable terminal device comprising: reading means for reading a two-dimensional code; and communication means for transmitting code information indicated by the read two-dimensional code to an external device;
A server device for receiving and storing code information transmitted by the mobile terminal device;
A power metering system characterized by comprising:

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