NO319336B1 - Method of transferring and storing credit value and value-storing electrical energy templates that utilize the same - Google Patents

Description

Method for transferring and storing credit value and value-storing electric energy meter that utilizes the same.

Technical area

The present invention relates to a value-storing electrical energy meter with a new concept, and more particularly, a value-storing method where the servant of an energy supplier or an energy wholesaler transfers a value through an energy line modem and stores the value in a value-storage module (SVM, "Store Value Module") or in an IC card and an advantageous electric energy meter direct payment without the need for a reading.

Background

A conventional Watt/hour meter for measuring the amount of electricity used per hour in a specific period using a reader has until now been used in all institutions that consume electricity, such as homes, offices and public buildings. Such a first-generation electric energy meter is administered in a very complicated and expensive way where a reader visits places where electric energy meters are installed, such as houses and commercial buildings, and checks the difference between the amount of energy used at the previous reading and the amount of consumption at the time of measurement, i.e. the amount of consumption for one month after a certain period. A calculation of supply and consumption is completed by the supplier and a bill is printed and mailed to the consumer after performing a calculation process such as data entry and calculation of consumption, a consumer then receives a payment request in paper form and processes the request and makes the payment. The invoice must be sent again for accounting of unpaid claims and non-payment.

As burglars have appeared, pretending to be readers, and reading costs make up a large part of the costs of electrical energy supplies due to the increase in personnel costs of readers, a remote sensing energy meter which is a second generation product comes into consideration as a new measurement method and is currently not widely used. It is possible to reduce the personal expenses for reading by remotely measuring electrical energy meters. Nevertheless, the consumption every month must be processed by a computer, the bill must be posted and unpaid claims processed. In particular, the administration of the remote energy meters on gas and water meters, which require additional energy, and communication lines such as a telephone line, or radio, is avoided by the supplier and the consumer. This is due to the increase in costs caused by the business between gas and water meters, the servant of a remote measuring center and the installation and operation of the communication equipment that accompanies the addition with a communication function for remote measurement.

Therefore, a third-generation energy meter based on payment using an IC card and which does not require visual reading is desirable. The energy meter based on payment by IC card can to some extent solve the problems of first and second generation energy meters. Nevertheless, the effectiveness of an energy meter based on payment by IC card depends on how the processes of recharging and the calculations of value information in an IC card are carried out. Especially when electrical energy is to be cut off due to complete consumption of the value in the IC card, unexpected accidents may occur.

From British patent document GB 2 295 681 an electricity meter is known which can be read remotely and which also has the possibility of prepayment using, for example, a smart card.

Purpose

A first purpose of the present invention is to provide a method for transferring and storing values where the server of an energy supplier or an energy reseller communicates with a value-storing energy meter at the respective subscribers, stores the value in a value-storing module (SVM, "Store Value Module" ) inside the value-storing energy meter according to the present invention, and transfers added credit value information in an IC card. As a result, suppliers or resellers increase the value for consumers by increasing the efficiency of administration and significantly reducing the price of electrical energy.

It is another object of the present invention to provide a method for storing values on an IC card where it is possible to use credit value information transmitted through an energy line modem in all the meters in homes and factories, such as gas meters, water meters, calorimeters for measurement of heat energy, which is installed and managed off-line.

It is a third purpose of the present invention to provide a value-storing electric energy meter where it is possible for the energy supplier or energy reseller to increase the efficiency of the administration by communicating with the host of an authenticated business through the energy line modem and transferring the credit value information to and storing the credit value information on an IC card . According to this, it is possible to reduce the price of electrical energy to consumers by remarkably reducing incidental expenses related to electrical energy supply and to omit the entry and calculation of the amount of electrical energy consumed throughout a specific period, using a bill printing server , and posting and calculation of the bills.

It is a fourth purpose of the present invention to provide a value-storing energy meter where it is possible to completely solve all the problems of electrical energy meters of the first, second, third generation, and quickly and easily recharge values, and to charge the added value on the IC- the card when using a chargeable channel. According to this, the value-storing energy meter can be used for various numbers of other meters, such as gas meters, water meters and calorimeters. Consequently, it is possible to maximize efficiency in various industries.

The invention

Accordingly, in order to achieve the above purposes, an electric energy meter is provided for communication with the server of the energy supplier through an energy line modem included in the electric energy meter, for storing value information in a value storage module inside the energy meter, for calculating the value according to the energy consumption and for stopping of the energy delivery when the credit value is completely used up.

Accordingly, as an aspect of the present invention, there is provided a method of storing credit information in a value storage module in a value storage energy meter by communication between a host and each terminal through an energy line modem included in the value storage energy meter which is a terminal, comprising the steps (a) the host first generates random data, sends the first random data to a terminal which generates a session key with a key generation algorithm using a terminal internal secret key, generates a first signature value using a signature generation algorithm and a comparison through a authentication for the terminal, and the terminal receives the first random data and generates the session key using the same method as the host, (b) the terminal generates a second signature value with a signature generating algorithm and other random data and sends the second random data to the host, (c) the host compares the first and second sig narur values and authenticates the terminal, the host generates a third signature value and sends the third signature value to the terminal with information about the amount of money after the terminal is authenticated and the terminal receives the third signature value and information about the amount of money from the host, generates a fourth signature value, and authenticates the host by comparing the third and fourth signature values with each other, and (d) the terminal increases the credit value by decoding the amount of money information and sending the credit value obtained by encrypting a balance and a terminal ID using an encryption algorithm to the host and the host receives the encrypted the credit value, decodes the encrypted credit value, compares the stored terminal ID with the decoded terminal ID, authenticates the terminal one more time, and backs up the balance to an archive file when authentication is complete.

According to another aspect of the present invention, there is provided a value-storing energy meter including input and output terminals for an electric energy line for measuring the amount of consumed electric energy, comprising of a device for managing electric energy consumption for measuring the voltage and current in a electric power line and calculation of consumed electric energy, an electric power line modem for performing the data communication between the host and the terminal by means of the power line, a security storage device including a secure access module (SAM, "Secure Access Module") having a CPU and an encryption key and an encryption algorithm for value storage and a value storage module (SVM) for value storage, to avoid fraudulent use of the value information and hacking, excluding a cryptographic attack, and requires the process of authentication from SAM for the request of settlement units from SVM, an on/off switch relay for to break the delivery a v electrical energy according to the balance results from SVM, and an exchanger of settlement units to reduce the settlement units from the input for value information from SVM according to the amount of electrical energy consumed per time unit, SVM then requests a new settlement unit to a store of settlement units where an internal settlement unit is emptied.

The value-storing energy meter preferably further comprises a device for reading from and writing to IC cards and to allow use with other meters such as water and gas meters and calorimeters by inserting an IC card into the energy meter, receiving values when connected to the host , record the received value on the inserted IC card, and read the received value from the IC card.

The printer and reader device for the IC card is preferably used on water, gas and heat meters using an IC card used in the off-1 ine state by recording added values for things such as water and gas in the IC card by using the electrical energy line modem, where it is possible to store electrical energy values in the IC card by including a communication port comprising of eight terminals defined by ISO 7816 part 2 equipped with Vcc, Clk, DIO, Reset, and Gnd for synchronous and asynchronous communication with the IC card.

The value-storing electric energy meter preferably further comprises an AC/DC converter for supplying operating voltage required by the electric energy meter, an energy consumption sensor for recording normal use of electric energy when the output value of a sensor is "0" and the terminals are bypassed, and the electric the energy is illegally used when the output value of a sensor is "1", and a buzzer for generating an audible sound and showing a user how to transmit and store transmitted values when a last unit of account is received by requesting a new unit of account from the SVM after the balance for the exchange of settlement units is emptied.

The device for managing the electrical energy consumption preferably comprises a shunt resistor for measuring the amount of AC current, a voltage divider for serial connection of two resistors and with the option of selecting from a voltage range given by the ratio between the two resistors to adjust the AC voltage from the power line within the range of the input voltage of a voltmeter, an analog-to-digital converter for converting an AC current signal flowing through the shunt resistor into a digital signal of 16 or 20 bits, and an analog-to-digital converter for converting an AC voltage into a digital signal of 16 bit, where the phase of the voltage is compared with the phase of the current and an angle where the two phases differ from each other is calculated and transmitted to an output as a signal to apply differentiated prices.

The value-storing energy meter preferably further comprises an energy consumption table which is a table for different energy charging modes to apply several differentiated steps with electric energy consumption prices such as 50%, 75%, 150% and 200% referring to states of supply and demand of energy based on a real-time clock including year, month, hour, minute and second.

The value-storing energy meter preferably further comprises a non-dynamic memory which stores a characteristic 3 byte ID number and records an energy consumption state for a specific period of hours, days or months in order to remotely observe unauthorized or abnormal use of electrical energy and to carry out an electronic sealing function.

The value-storing energy meter preferably further comprises an LCD screen to visually display the balance of the value, the transfer state of the value, real-time electricity consumption and accumulated state of the energy consumption.

The value-stored energy meter that can be used for simple and audio-enabled toll payment aids with a SET electronic commercial transaction process (SET, Secure Electronic Transactions) using next-generation credit and direct debit cards from EMV'96 combined with IC card readers and writers, further it may include telecommunication means for performing audio communication with a person in the management of the host server or transmitting an audible message to help the user store a value and a keyboard for a user directly requesting the value to be is stored.

The input and output terminal for electrical energy at the energy meter preferably includes a cover and physical seal to avoid physical tapping, which prevents uti Hatt and abnormal use of electrical energy.

The value-storing energy meter preferably further comprises a circuit with a protection to absorb lightning or voltage wave on an electrical energy line to a supplier.

The value-storing energy meter can preferably request a voice message from a person engaged in the service using a loudspeaker and a keyboard switch on a digital intercom. Processes regarding the transfer and storage of credit values are facilitated by a person engaged in the transfer of the voice message service to a subscriber.

Example

The above-described purposes and advantages of the present description will appear more clearly in detail in a preferred embodiment thereof with reference to the attached drawings, where: Fig. 1 is a flowchart illustrating a method for transferring and storing values according to the present invention; Fig. 2 is a flowchart illustrating the flow of multi-stage differentiated, corrective load mode commands (the exchange of an electrical energy load system) with hours, days, months, and seasons applied to a value storage energy meter according to the present invention; Fig. 3 is a flowchart illustrating processes for displaying abnormal consumption of electrical energy such as conductance and prevention of illegal consumption by comparing the total energy used by subscription per unit of time such as days, weeks, or months, with the total amount of electrical energy consumption per unit of time; Fig. 4 schematically describes a signature generating method and an encryption method used in the present invention; Fig. S is a block diagram showing the internal structure of the value-storing energy meter according to the present invention; Fig. 6 shows the structure of a system according to the present invention to describe the flow of value information; and Fig. 7 is a split view showing the external appearance of the value-storing energy meter according to the present invention.

In the following, a method for transferring and storing values according to a preferred embodiment of the present invention, and the structure and administration of a value-storing energy meter without the need for visual reading of a meter, which uses the same, is described in detail.

The present invention can be carried out on an electric energy meter, a gas meter, a water meter, a calorimeter, using calculating methods for direct payment and advance payment mixed with a method based on an electronic wallet. Here, for the sake of simplicity, the present invention will be limited to the electric energy meter. In all communication processes regarding the transfer and storage of values according to the present invention, a basic encryption algorithm triple DES is also used (DES, data encryption standard, ("Data Encryption Standard)"). Communication between a host server and a terminal belonging to the electric energy meter is carried out in the following way. First, the task is performed by creating a session key (Ks) in the server and in the terminal. An encryption algorithm triple-DES is performed using the session key. Also when a task of creating a signature is required, triple DES is used in a MAC CBC. When values are stored in the energy meter terminal, a value store, mode tables for calculating energy consumption, a unit charger and a time for correction are stored. When values are read from the energy meter terminal, the credit balance, user details such as date, month and year, the mode tables for calculating energy consumption, a device charger and a timer timer are read, thereby providing information to detect abnormal usage.

First, before the description of the method for transferring and storing values according to the present description, examples of the signature generation and the encryption algorithm used for this will be described in the following with reference to Fig. 4.

After the task of creating the session key (Ks) is performed in the server and the terminal through communication between the server and the value-storing energy meter, the encryption algorithm triple-DES is performed using the session key (Ks). MAC CBC using triple DES can be used for the task of signature generation. In the following, the signature generation and encryption algorithm will be described in further detail with reference to Fig. 4.

For the signature generation, the size of original data is made as a multiple of 64 bits by applying padding in step 1. These are Di,..., and DN from Fig. 4.1 step 2, the data values (D„) of 64 bits become F- encrypted, performed with triple DES, according to an incoming key (K). The signature values are Oi,..., and On from step 3. At this point the values are obtained by adding the respective data values (D„) to the signature values (On-i) apart from a first signature value Oj which is F-encrypted.

For the encryption, the size of this original data is made of multiples of 64 bits using padding in step 1. These are Di,..., and DN. In step 2, the triple-DES algorithm is applied to the F-encryption. The encrypted messages are 0| +...+ On from step 3.

A master key (KH) is used at the host, an internal secret key (KT) from each terminal, and a secret session key (Ks), used in a communication process, each of which has a size of 128 bits. The internal terminal key (KT) is generated from the parent key (KH) at the host. The session key (Ks) is generated from the internal terminal key (KT). The parent key (KH) of the host and the internal terminal key (KT) are arbitrarily selected from different sets.

The internal terminal key (KT) is generated by encrypting the ID of the terminal with the triple-DES algorithm using the superior key (KH) of the host. An internal key is stored in the terminal in a generation step and is generated in the host in an initializing step in the communication. That is, KT= Crypt (ID, KH).

The session key (Ks) is generated by encrypting random numbers R generated in the host with the triple-DES algorithm using the inner terminal key (KT) when any communication is performed. All encryptions are performed using the session key (Ks) in the communication process. That is, Ks = Crypt (R, KT).

The present invention incorporates algorithms for (1) a command for value storage, (2) a command for different load modes based on hours, days, months and seasons and (3) a command for checking information about the user through days, weeks or months (monitoring abnormal use). This will be described with reference to Fig. 1-3.

First, the value storage command is described with reference to Fig. 1.

STEP 10: The host first generates random data (RI, R2, and n) and sends the first random data to the terminal. The session key is generated by the key generation algorithm using the inner secret terminal key (KT[n]). That is, Ks = Encrypt (RI, KT[n]). For comparison during a terminal's authentication, a first signature value Slh = Sig (R2, Ks) is generated by the signature generation algorithm. The terminal receives the initial random data (RI, R2 and n) and generates the session key as performed in the host using the internal secret terminal key (KT[n]). That is, Ks = Encrypt (RI, KT[n]).

STEP 12: The terminal generates a second signature value Sit = Sig (R2, Ks) using the signature generation algorithm, generates another random data R3, and sends Sit and R3 to the host.

STEP 14: The host can authenticate the terminal by comparing Slh and Sit. When the terminal is authenticated, the host generates a third signature value S2h = Sig (H + R3 + EnAmnt, Ks) and sends S2h to the terminal with encrypted information about the total amount of money (EnAmnt). Here, H is a header representing the value store command. The terminal generates a fourth signature value S2t= Sig (H + R3 + EnAmt, Ks) and authenticates the host by comparing S2h with S2t.

STEP 16: Once the host is authenticated, the terminal increments the value, encrypts Balance + ID as M Encrypt (Balance + ID, Ks), and sends the encrypted value M to the host. The host authenticates the terminal one more time by decoding the encrypted value M as Balance'+ID' = Decrypt(M, Ks) and comparing ID' with ID. When the terminal is authenticated, the balance is saved in an archive file.

The flow of the different control commands for load mode based on hours, days, months and seasons (the load system) will be described with reference to Fig.2.

STEP 20: The host generates the first random data (RI, R2, and n) and sends the first random data to the terminal. The session key is generated by the key generation algorithm using the secret key (KT[n]). That is, Ks= Encrypt (RI, KT[n]). For comparison during the terminal's authentication, the first signature value Slh = Sig (R2, Ks) is generated by the signature generation algorithm. The terminal receives the initial random data (RI, R2 and n) and generates the session key in the same way that the host uses the internal secret terminal key (KT[n]). That is, Ks = Encrypt (RI, KT[n]).

STEP 22: The terminal generates the second signature value Slt=Sig(R2, Ks) using the signature generation algorithm, generates the second random data (R3), and sends Sit and R3 to the host. STEP 24: The host can authenticate the terminal by comparing Slh with Sit. When the terminal is authenticated, the host generates a third signature value S2h = Sig (H + R3 + Mode+Device, Ks) and sends the third signature value to the terminal along with mode information and device payload information. The terminal generates a fourth signature value S2t = Sig (H + R3 + Mode + Unit, Ks) and authenticates the host by comparing S2h with S2t.

STEP 26: Once the host is authenticated, the terminal converts a load system, encrypts Balance + ID as M = Encrypt(Balance+ID, Ks) and sends the encrypted value M to the host. The host authenticates the terminal once again by decoding the encrypted value M as Balance'+ID'= Decrypt (M, Ks) and comparing ID' with ID. When the terminal is authenticated, the balance is saved in the archive file.

Finally, the consumption flow in days, weeks or months and timer information test command (used for displaying abnormal usage) will be described in detail with reference to Fig. 3.

STEP 30: The host generates the first random data (RI, R2 and n) and sends the first random data to the terminal. The session key is generated by the key generation algorithm using the internal secret terminal key (KT[nJ). That is, Ks = Encrypt (RI, KT[n]). The first signature value S1 h = Sig (R2, Ks) is generated by the signature generation algorithm for comparison during the terminal's authentication. The terminal receives the initial random data (RI, R2, and n) and generates the session key as performed at the host using the internal secret terminal key (KT[n]). That is, Ks = Encrypt (RI, KT[n]).

STEP 32: The terminal generates the second signature value Sit = Sig (R2, Ks) using the signature generation algorithm, generates the other random data (R3), and sends Sit and R3 to the host. STEP 34: The host can authenticate the terminal by comparing Slh with Sit. When the terminal is authenticated, the host generates the third signature value S2h = Sig (H + R3 + Time, Ks) and sends the third signature value to the terminal along with Time. The terminal generates a fourth signature value S2t = Sig (H + R3 + Time, Ks) and authenticates the host by comparing S2h with S2t.

STEP 36: Once the host is authenticated, the terminal encrypts an information file (Info) including consumer details (Log), a differentiated load mode table (ModusTB), a terminal time (Timer), the balance (Balance) and the ID.

That is, the terminal encrypts Info with M = Encrypt (Info, Ks) and sends the encrypted value M to the host. Here it means Info = Log + ModusTB + Balance + ID. The host authenticates the terminal once more by decoding the encrypted value M with Info' = Decrypt(M, Ks) and comparing ID' with ID. When the terminal is authenticated, consumption in days, weeks or months and timer information is recorded on the archive file and checked.

The encryption algorithm for the value transfer and storage used in the present invention is described as mentioned above. To be used for a real energy meter, the following must be taken into account. The maximum number of value-storing energy meters that can be connected to a transformer is limited to 256.1 a transformer for converting 3.3 KV to 220 V supply voltage, a local service & monitoring unit (LS) manages 250 value-storing energy meters. The LS's have different serial numbers which are connected to the other side of the different transformers. An area's service & monitoring unit (AS) connected to a maximum of 256 LSs can then manage 65536 value-storing energy meters. To manage the 256 LSs, a local server in a tree structure can manage up to 16,000,000 ASs. Nevertheless, when considering the performance and efficiency of the server, it is preferred that the maximum number of value-storing energy meters controlled by the local server be limited. An ID of 3 bytes is assigned to a normal user of a power line modem and to an electrical energy meter modem (micom) for the case where a signal goes over the transformer to the other side of 220 V. A micom with a bus with a bundling function protects the encryption algorithm and an encryption key, prevents the approval, or one can selectively use a secure access module (SAM) which is of the IC card type with a subscriber's identification module (SIM).

An energy quantity calculator, a store of billing units and a display can be implemented using an additional microcontroller. At this point, it is tested whether the control of the LCD screen and the calculation of consumed energy is prevented when the energy meter communicates with the host. It has been taken into account that there is a time limit for obtaining time information for the energy meter. That is, when it is assumed that it takes one second to transmit time information to one family, it takes one hour to transmit information to 3600 families. A real-time clock is loaded in the energy meter and different loads are performed according to the times. The time is corrected and displayed at all times. The abnormal use of electrical energy is displayed or digital sealing is used in cases of tapping or hacking when connecting the energy line modem to a PC.

The digital seal is systematically realized by a combination of hardware and software. The digital seal for displaying abnormal consumption of electrical energy is realized with a method where the terminal transmits detailed use of energy at a point in time, for a period of days, weeks or years to a server as 2.44 kilobytes of information. The server archives the information in a database, compares the information with information to be transmitted at the next time and compares the result with the total amount of energy use for the same period. When a voltage is applied to an output terminal in the state where a blocking switch cuts the electricity supply, it is determined that the use of electricity is not permitted. According to this, information about the emergency is transmitted to the server.

All the details regarding the total use of electrical energy can be utilized as a basis for creating new, advantageous price agreements for a new contract by imposing a reserve ratio during the purchase of electrical energy by estimating the electricity consumption in periods of days, months or seasons on the basis of total amount of energy used in periods of hours, days, months or seasons.

When a circuit breaker interrupts the energy supply as a result of the stored credit value becoming too low, an over-conduction, a special break, or by energy being abnormally consumed due to the tapping of the energy source at the other end of the meter, detected by a presence control method of a load voltage.

The credit value is transferred and stored in the value-storing energy meter, gas meter, water meter and calorimeter via the energy line modem. The credit value of the electrical energy is stored in SVM and the remaining values are stored in respective regions in the IC card as an electronic wallet.

In the following, the structure and administration of the energy meter is described based on the above points, with reference to Fig. 5-7.

Fig 5 shows the electrical energy meter which transmits and stores value information through the electrical energy line modem. In Fig. 5, a switch relay 1 is an on/off blocking type relay switch for interrupting the supply of electrical energy. A shunt resistor 2 measures the alternating current (AC) with a manganese resistance (Mn) of 0.1 m£l When the blocking relay 1 is broken, an energy consumption sensor 3 registers normal use when the output of the sensor is "0" and the terminals ls and 1L are off-line, and the energy consumption is not permitted when the output of the sensor is "1". A buzzer 4 notifies of the need for a new settlement unit for credit value to SVM after the balance at an exchanger of settlement units 10 is consumed and generates an audible alarm, in this way to show the transfer and storage of the credit value at an energy consumer. An IC card 5 that stores credit value/added value registers the card serial number (CSN) of a subscriber

IC card in a management database using the master key of the energy reseller who manages the energy meter according to the present invention and checks the presence of a legally registered CSN when the server is requested to transfer the credit value, in order to prevent illegal use of electrical energy. A voltage divider 6 adjusts 117, 220 and 240 V AC voltage to be within the input value range of the voltage analog to digital converter (V-ADC). The range of the voltage is selected by the ratio of two resistors connected in series. A V-ADC 7 is a circuit for converting an analogue AC voltage signal into a 16 bit digital signal. An analog to digital current converter (I-ADC) 8 is a circuit for converting an AC current signal flowing through the shunt resistor 2 into a 16 or 20 bit digital signal. An electrical circuit for managing the energy consumption 9 calculates the electrical power (Watt) by multiplying the digital signal from the V-ADC 7 with the digital signal from the I-ADC 8 and converting the result into a pulse number and width signal. The electrical circuit for managing the energy consumption 9 compares the phase of the voltage with the phase of the current, calculates an angle where the two phases are different, and supplies the output with the phase difference as a signal, in this way imposing different loads on things that temporarily use inductive loads. The billing unit exchanger 10 reduces the billing units according to the amount (Watt/hour) of the electrical power consumed per unit time, requests new billing units from a unit store with space for ten billing units when the billing units inside the billing unit exchanger 10 are consumed, and reduces the new billing units by the amount of energy consumed. If the ten-unit supply of settlement units is used up, 100 settlement units are needed to replenish the SVM, which will be described later, and the ten-unit supply of settlement units. The settlement units required for the SVM 166 can be received through the authentication at the SAM 164. An RTC and energy consumption table 11 performs a differential operation with multi-step energy loads according to an electrical energy supply and demand situation of 50%, 75%, 100%, 150% and 200% based on a real time clock consisting of year, month, day, hour, minute and second (YYMMDDHHMMSS).

An IC card reader and writer 12 conforming to ISO 7816 is a communication port comprising eight terminals as defined in ISO 7816 Part 2 and including Vcc, Clk, DIO, Reset and Gnd for synchronous and asynchronous communication with IC cards. Multi-purpose credit values for things such as electric energy, gas, water, hot water, heating energy, and pay TV are recorded on an IC card by inserting the card into the energy meter in an on-line/off-line state. After recording the transferred value from the server to the gas service server through the value-transferring and value-storing energy meter, the IC card is removed, inserted into the gas meter, and the value information is transferred to the gas meter, thereby reducing the value information on the card according to the amount of gas used . According to this, the value transmitting and storing energy meter can be used in off-line mode.

A power line modem 13 performs data communication through the power line. Each modem is assigned one of 256 Power Line Modem ID (PLMID) addresses. An AC/DC energy source 14 supplies the value-storing energy meter according to the present invention with the required operating voltage. The 3-byte ID, which is an internal number on the value-storing energy meter, is recorded on a ROM in production. A non-dynamic memory 15 comprising a flash memory that records the energy consumption for a certain period, e.g. the details of the consumption for 24 hours are found by recording the amount of electrical energy consumption in the value-stored energy meter as 16 bits of information every sixty seconds, the details of the electrical energy consumption for a week by summing together seven total amounts of daily energy consumption, the details of the electrical energy consumption for a month by summing up thirty total amounts of daily energy consumption, and shows the unauthorized energy consumption or the abnormal consumption from a distance, and then performs the electronic seal. An packaged bus 16 including a processing unit (CPU) 162, a secure access module (SAM) 164 for storing an encryption key and an encryption algorithm for storing the credit value, and a store of value module (SVM) 166 for storing the credit value protects the manufacture and use of credit value information and hacking and bars a cryptographic attack. A liquid crystal display LCD 17 displays the balance of the credit value, a transfer state, a real-time energy consumption situation and an accumulated and stored energy consumption situation that can be visually distinguished from each other by a user. An output and input terminal 18 for the energy line comprises ls, 2s, 2L and IL to connect the input and output lines of the electrical energy to each other and a cover to prevent physical draining. A protection 19 is a circuit to absorb lightning or voltage surge.

A value-storing energy meter for measuring electrical energy of a particular type was described above. Nevertheless, the value-storing energy meter according to the present invention can measure the electrical energy in at least two ways including the voltage divider 6, V-ADC 7, I-ADC 8, the switch relay 1, and the shunt resistor 2 according to the nature of the electrical energy. That is, when the voltage divider, V-ADC, I-ADC, switch relay, and shunt resistor are combined so that at least two types of energy sources with different voltages can be used separately or simultaneously, the respective amount of current is additionally measured and operated.

The operation of the value-storing energy meter with the structure as mentioned above is described in the following. As previously mentioned, regarding the energy supplier or energy reseller, the credit value from the host is stored in each terminal stored in the SVM 166 through the energy line modem 13 using the credit value storage method, each energy meter calculates the load according to the energy consumption controlled by the circuit 9, compares the calculated load with the balance of the credit value information stored in SVM 166 and calculates the load through the exchanger of settlement units 10. When a balance of no more than a certain amount remains in the SVM 166, the user is informed of the balance state by the sound of the buzzer. When the balance is insufficient, the credit value is transferred from the host to the SVM 166 by the above credit value storage method or the energy supply is interrupted by the switch relay 1. The credit value information can be stored in the SVM 166 by communication between the host and the terminal in the value storing energy meter according to the present invention. Nevertheless, it is possible to transfer energy value information stored in the IC card 5 to the SVM and store the transferred information in the SVM by inserting the electricity, gas, water and calorie IC card 5 for a family or a business where a a legally determined amount of money is taken up in the value-storing energy meter according to the present invention.

To that end, it should be said that the energy meter according to the present invention displays information such as monthly consumption and card balance on the LCD 17 installed therein by using a specific amount of electrical energy in a value range recorded in the SVM, and the buzzer 4 sounds when the balance has only a certain amount left in the card. Then the user requests the server to transfer credit value. The credit value is automatically charged to an account with a previously agreed bank or agreed with a credit card company. The electrical energy value is received on-line through an energy line and stored in the SVM 166. The value is reduced according to the energy use scale.

The energy supplier and energy reseller can also save costs by omitting processes such as reading meters, entering and calculating costs, writing and posting bills. An electricity bill is paid in advance. In addition, recharging is omitted in case of payment in arrears. It is also possible to lower the electricity bill due to the benefits of interest on prepayment, the introduction of different charges/prices depending on the time of energy use, and the cost saved in the difference between the purchase price and a sale price of energy. The energy seller can manage a business with a high added value.

To avoid the use of fabricated cards other than the IC cards legally issued by the energy supplier or energy reseller, the SAM 164 is built into the energy meter for authentication of the card. When the card is inserted into the terminal, the card and the terminal authenticate each other. When the amount of money on the card is transferred by the terminal as credit value, the terminal operates according to the encryption process shown in Fig. 1. Consequently, the use of fabricated cards is avoided. A method to remove an encrypted key, thus putting the terminal out of action, can be considered against cryptographic attacks by a hacker through disassembly of the meter, for example, to fabricate a terminal or a card during disassembly of the value store the energy meter. Nevertheless, the encryption algorithm and the encrypted key inside the terminal only have a reduction key that reduces the credit value information according to the energy consumption. Consequently, it is not possible to increase the money or the credit value information. In particular, in the present invention, when a user/subscriber contacts an ARS server through telephone or digital landline to request a transfer of credit value, the user amount is selectively determined by the use of a credit card or bank account. The process of value transfer starts within an area where payment is guaranteed. The process can also be carried out over the Internet. For people who have not used a computer or information/communication network, it is basically possible to automatically transfer the value when the value stored by the account's automatic transfer agreement between the energy seller/energy reseller and a financial institution is reduced to a certain scale. In cases where the execution of the trade by means of a SET electronic trade process with direct payment card, the server can in particular act as a cyber mail and put the trade details into a digital envelope (DE), which has the effect of signing the trade details. Accordingly, the trading process cannot be denied or fabricated.

The process carried out and the conditions for the present invention will be described in detail in the following.

1) Processes regarding the generation, transfer and storage of credit value

Credit value information is generated by communication and operation with the subscriber management database using a master key (Mk) of the energy seller or energy reseller. The ID number of the subscriber, which is requested by a LAN modem via a power line, is selected by an area service & monitoring (AS) and a local service & monitoring (LS). When the request for the subscriber's ID number and the communication is finished, the validity of the server and the terminal is authenticated by the above authentication process. When the authentication is complete, the requested credit value information is transferred. The credit value information transmitted through the energy line is stored in the value storage module (SVM).

2) Process for transferring and storing added value

The effectiveness of the present invention is increased by adding an added value transfer function that can be used in connection with meters for energy, gas, water, heat, hot water that are used in off-line mode with the IC card without a separate communication line. The generation and transfer of the added value is carried out with the above process of generation and transfer of the value. The added value is stored in the IC card instead of in the energy meter. The added value information for things such as gas, water, hot water and heat energy stored in the IC card can be operated in plug-in off-line and IC card-based water and gas meters compatible with the IC card provided in the Korean Patent Application Number 98 -6947 and 98-6948 submitted by the same applicant. In addition, the efficiency of the administration is maximized.

3) Use of credit rating information

The credit value information stored in SVM 166 is reduced in an exchanger of settlement units (TE) 10 according to the amount of energy consumed. The accounting units are reduced per time unit by several milliWatts, several Watts, or several kiloWatts. When a settlement unit with a minimum value is used up, the credit value information is reduced by a process of requesting new settlement units.

4) Differentiated application of energy consumption price

An energy use mode that can differentially apply multi-step prices for energy use according to time zones such as weekdays and weekends, seasons and months where the amount of credit value used is selected by a program and applied automatically. In the table for energy consumption mode 11, different prices can be differentially applied, depending on time zones and the characteristics of supply and demand for electrical energy and electrical energy consumption, e.g. 100% during weekday daytime hours, 75% before and after daily weekday business hours, 50% at midnight, an additional 200% during daily business hours, and an additional 300% from 2 to 4 in the afternoon in summer when air conditioning use increases fast. The prices are applied using a real-time clock (RTC). Since the separate TE 10 is used with respect to the same amount of energy use, the stored credit value is applied differently. According to this, the consumption of energy is optimal in each time zone. In this way, the efficiency of electricity supply and demand is maximized. Therefore, the electricity bill is reduced.

5) Balance control and automatic wrestling

The credit value information at SVM 166 is shown on a display device such as liquid crystal so that the user can check the balance at any time. When the credit value is used up, the exchange of settlement units informs the user that the last settlement units are used by sounding an alarm with an audible frequency. When the credit value is not recharged before the last settlement unit is used up, the electricity supply is interrupted by sending a break signal to the switch relay serially connected to the energy line.

In order to satisfy the above-mentioned different realization processes and conditions, the present invention can be used in connection with various gas and water meters where it is possible to transfer the added value with an IC card on the basis of value transfer and value-storing energy meter with where it is not necessary to read a meter based on the following structures and principles.

The value-storing energy meter according to the present invention measures a voltage (V) and a current

(A) in real time, calculates the amount of electric power (W) using the energy consumption circuit, measures the consumption of energy per unit time, converts the stored value information into a unit of account, reduces

the settlement units according to the amount of consumed energy per unit of time in an exchanger of settlement units 10 and request new credit value information when the settlement units are used up. Also, all information the user should know, such as amount of remaining credit value, and an energy consumption state is displayed through a liquid crystal display 17. When the last

the credit value information is transformed into settlement units, the user is informed with an audio signal that has an audible frequency. Accordingly, the credit value is recharged. When the internal credit value is used up, the energy supply is interrupted by breaking relay 1.

In the mode table (MT) 11, with which it is possible to differentially apply electric energy prices in at least five steps, the real time clock (RTC) is used to differentially apply electric energy prices in steps such as 50%, 75%, 100%, 200% and 300% according to time zones and reduces the credit value information. That is, through the same electrical energy used per unit of time, the credit value of SVM is reduced differently since TE 10 imposes multi-step energy prices for the time program defined in MT credit. According to this, the consumption of energy is optimal in each time zone. Therefore, supply and demand for electrical energy is well balanced. A discount benefit according to selective use by the user is provided by the multi-step energy price system. E.g. a discount for night time when the supply of electricity is very large can lower the energy supply reserve ratio of the energy supplier. When offices use air conditioning intensively in the summer, a high price is charged, and a heat storage system is introduced. According to this, it is possible to provide discount benefits to consumers such as homes or businesses.

The value-storing energy meter according to the present invention has a packed data bus structure in which a CPU 162 and an internal memory cannot be read by an unskilled person to avoid the stored value being fabricated or cryptographically attacked. The store-of-value energy meter comprises the secure access module (SAM) 164, where the inner secret key (KT[n]) and encryption algorithm can be loaded, and the store-of-value module (SVM) 166. Should the hacker or encryption attacker disassemble the energy meter to fabricate the credit value information, the encrypted key and the encrypted algorithm at SAM and SVM cannot be seen. SAM, SVM and the master key (Mk) of a host computer are mutually authenticated. Therefore, SAM and SVM can transmit and store credit rating information using the above process using the master key. SAM and SVM can store credit value information and added value information in the IC card using the master key. When the IC card is inserted into the energy meter, a response-to-reset signal (ATR) is received by sending a reset signal to the card, the IC card and the terminal are mutually authenticated, the credit value information is exchanged through SVM and SAM, and the credit value information is calculated considering the permitted use of the IC card. The credit value information is recorded by a separate encrypted key (Mk) with an issuer. Therefore, it is not possible to increase the credit value. Such processes are carried out in accordance with the International Organization for Standardization ISO 7816 Part 1, Part 2, Part 3, Part 4, Part 8 and Part 10 and contain a physical standard, an electrical signal, a communication protocol and an encryption process. At least two encrypted keys are stored as requested by the administrator. An encrypted key is updated remotely at a specific time. The encrypted key is used selectively. Consequently, punishable use of the credit value is avoided.

The transfer of the credit value and the added value and the display of the permitted use of the value is carried out through an electrical energy line modem. A circuit with an energy consumption sensor is provided and the energy use information is recorded in a non-dynamic memory (NVM) 15 to show illegal use of electrical energy and to punish illegal use without visiting the place where the energy meter is installed and checking lead or tartar sealing. Such a circuit can be periodically displayed by LS and AS, thus performing an electronic sealing function without checking the physical lead seal.

The value-storing energy meter has a serial number (SVPMSN) of 3 bytes. The electrical energy modem 13 communicates with the LS by means of a modem identification number (M-ID) with an address of 1/256. When the server of the energy seller or energy reseller sees a request for the transfer of a value, a short-distance communication starts with the value-storing energy meter of the subscriber according to an addressing process to select the M-ID belonging to the subscriber.

The subscriber requests the transfer of credit value by contacting the ARS belonging to the energy seller or energy reseller with a telephone or digital house phone 20 and a keyboard 21, chooses the form of payment by credit card or bank account, chooses payment of the transferred credit value. Then a servant manages the credit value and transfers the credit value by AN given by the servant to a credit card company. The servant who manages the credit value at the energy seller calls M-ID through AS and LS, transfers the credit value to SVPM and stores the transferred credit value by performing the above-mentioned value storage process.

The LS sequentially displays the energy consumption status of up to 256 value-storing energy subscribers through the electrical energy modem connected to 117/220 V electrical energy lines at a maximum distance of 3 km. LS sequentially calls SVPM address 1/256 • ■ ■ n/256, checks and manages the change state of the internal real-time clock, manages the system mode price, checks the CSN on the card, stores a copy of the balance of the credit value, checks the presence of illegal and abnormal use of electric energy and downloads reports on energy consumption over days, weeks or months, thereby summarizing and estimating the demand for electrical energy. The summary and estimation results are used as a guide to negotiate the price of the purchase of electrical energy and re-manage the price of the energy deliveries.

In the transmission and storage, the meters of gas, water, heat and hot water, apart from the electric energy meter, consist of a meter that operates in an off-line state using IC cards, without separate communication lines since these installation environments are inferior and line construction is very complicated . When the added value information transmitted through the value-storing energy meter is stored on the IC card and the IC card is inserted into water, gas and heat meters, added value information is stored in each meter. The settlement units are reduced by the same credit value-reducing processes. When the credit value information is exhausted, a valve to stop the supply of gas, water, heat and hot water is closed. The effectiveness of the present invention increases with the added value transfer function where it is possible to use the value transferring and storing electrical energy meter together with the added value service. The added value is generated and transferred by the same processes as the generation and transfer of credit value. The added value information is stored on the IC card instead of in the energy meter. The added value information for such as gas, water, hot water and heat is stored on the IC card by performing the above processes, and can be transferred to the IC card off-line water and gas meters that can hold the IC card provided in Korean Patent Application No. .98-6947 and 98-6948.

In the following, the transfer of credit value request and processes in the electrical energy modem are described with reference to Fig. 6.

A subscriber's IC card 52 is issued to those who wish to receive the IC card, using a master key IC card 51 at the system administrator at an energy reseller 50. After determining the credit value for things such as electricity, gas, water, hot water and heat energy in money or credit card on the spot, an initial credit value is stored on the IC card. The electric energy credit value on the card is stored in the electric energy meter by inserting the card into the value-storing energy meter of a user 55. When an IC card is inserted into gas, water, hot water and heat energy meters of the user 55, the credit value is stored in each meter. After the first credit value storage, further storage of credit value/added value is carried out with the value transfer process using the energy modem. The value transfer and storage can be carried out using means of telecommunications, such as telephone, internet and the like, and the value-storing energy meter. The process of transferring and storing values is carried out with the above-mentioned encrypted algorithm. The transfer channel for credit value/added value is as follows. The subscriber's archive information is retrieved from the subscriber database and from the host server at the energy reseller 50. Payment to a bank or a VAN company is guaranteed, by a user choosing between several credit card numbers, a direct payment card number and a bank account number. The credit value information is coded with the parent key from SAM. The ID of the subscriber's value-storing energy meter is called through the networks AS and LS. The SAM and the master key are mutually authenticated. The information on credit value/added value is then transferred. The local monitoring unit (LS) downloads the energy usage file for periods such as hours, days, weeks or months from the value-storing energy meter, displays the state of energy usage and the balance of credit value on an hourly or daily basis, resets the time, downloads the energy usage mode and program, and displays illegal and abnormal use of electrical energy. Money calculations are also carried out between the money calculation system 54 at an energy seller 53 and the energy reseller 50 with a method similar to the above-mentioned processes.

Fig 7 is a split drawing in perspective showing the outer shape of the value-storing energy meter according to the present invention. The value-storing energy meter according to the present invention includes an LCD screen 17 on the upper part of the front surface and an input and output terminal 66 on the lower part of the front surface. The input and output terminal 66 is connected to the electrical energy line to transmit and receive electrical energy and is covered with a protective cap 64 against illegal use. A digital house phone 20 and a keypad 21 for requesting value transfer are provided on the upper surface of the protective cap 64 against illegal use. Also, an IC card insertion hole 60, where the IC card is to be inserted, is formed on one side of the electric energy meter. The credit value is stored in the IC card and read from the IC card when it is inside the card reader Awriter 60. Also an illegal use/sealing unit 62 for control in case of disassembly and to seal the energy meter so that the energy meter cannot be used illegally is part of the energy meter .

As described above, the present invention is described only with regard to the value-storing electrical energy meter via the energy line modem. Mutually necessary information can be exchanged via communication on energy lines between the server and the terminal. A general telephone line, a communication line for a radio frequency relay and a cable TV line can be used in place of the power line.

As mentioned above, according to the present invention, it is possible to reduce expenses for visiting personnel by removing the process of reading meters for things such as electric energy, gas, water, heat energy, and then calculating process expenses, printing and posting bills and bill for postage.

It is also possible to reduce losses due to uncollected electricity bills and unpaid receivables, and to provide additional value since the credit value is paid for in advance with a credit card or from a bank account. According to this, an energy supplier can be given a higher value.

Industrial application

The present invention describes a composite electric energy meter where it is possible to solve economic and safety problems regarding having to visit and visually examine a conventional remotely located electric energy meter.

Claims (17)

1. Method for storing credit value in a value-storing module in a value-storing electric energy meter by communication between a host and each terminal through an electric power modem (13) included in the value-storing energy meter which is a terminal, characterized in that the method comprises the steps (a) the host generate the first random data (RI, R2, and n), send the first random data to a terminal, generate a session key (Ks) with a key generation algorithm using an internal secret terminal key (KT[nJ), generate a first signature value (Slh) with a signature generating algorithm for comparison in an authentication of the terminal, and the terminal receives the first random data and generates the session key with the same method as the host; (b) the terminal generates a second signature value (Sit) with a signature generating algorithm and the second random data (R3) and sends the second random data to the host; (c) the host compares the first and second signature values (Slh, Sit) and authenticates the terminal, the host generates a third signature value (S2h) and sends the third signature value (S2h) to the terminal with information about the amount of money when the terminal is authenticated and the terminal receives it third signature value and the information about the amount of money from the host, generates a fourth signature value (S2t) and authenticates the host by comparing the third and fourth signature values with each other; and (d) the terminal increases the credit value (M) by decoding the information about the amount of money and sends the credit value obtained by encrypting a balance and a terminal ID using an encryption algorithm to the host and the host receives the encrypted credit value, decodes the encrypted credit value ( M), compares the stored terminal ID with the decoded terminal ID, authenticates the terminal a second time, and backs up the balance to an archive file when authentication is complete. 2. Method according to patent claim 1, characterized in that it further comprises an electrical energy load system with transformation steps including the substeps: (al) the host generates the first random data (RI, R2, and n), sends the first random data to a terminal, generates a session key (Ks) with a key generating algorithm using an internal secret terminal key (KT[n]), generates a first signature value (Slh) with a signature generating algorithm for comparison in an authentication of the terminal, and the terminal receives the first random data and generates the session key using the same method as the host; (bl) the terminal generates a second signature value (Sit) with a signature generating algorithm and the second random data (R3) and sends the second random data to the host; (cl) the host compares the first (Slh) and second (Sit) signature values and authenticates the terminal, the host generates a third signature value (S2h) and sends the third signature value to the terminal with mode information when the terminal is authenticated and the terminal receives the third signature value and mode information from the host and generates a fourth signature value (S2t); and (dl) the terminal authenticates the host by comparing the third (S2h) and fourth (S2t) signature values with each other, and the terminal converts a price system, generates an encrypted value (M) obtained by encrypting the mode information and the terminal ID using of an encryption algorithm to the host and sends the encrypted value (M) to the host and the host receives the encrypted value, decodes the encrypted value, compares the stored terminal ID with the decoded terminal ID, authenticates the terminal once more and backs up the balance to an archive file when authentication is complete. 3. Method according to patent claim 2, characterized in that it further comprises the use of command steps for checking user information including the sub-steps: (a2) the host generates the first random data (RI, R2, and n), sends the first random data to a terminal, generates a session key (Ks) with a key generating algorithm using an internal secret terminal key (KT[n]), generates a first signature value (Slh) with a signature generating algorithm for comparison in an authentication of the terminal, and the terminal receives the first random data and generates the session key by the same method as the host; (b2) the terminal generates a second signature value (Sit) with a signature generating algorithm and the second random data (R3) and sends the second random data to the host; (c2) the host compares the first (Slh) and second (Sit) signature values and authenticates the terminal, the host generates a third signature value (S2h) and sends the third signature value to the terminal with time information when the terminal is authenticated and the terminal receives the third signature value and the time information from the host, generates a fourth signature value (S2t); and (d2) the terminal authenticates the host by comparing the third (S2h) and fourth (S2t) signature values with each other, and the terminal sends the value (M) obtained by encrypting a consumption detail log file using the encryption algorithm and the terminal ID by application of encryption algorithm and sends the encrypted value to the host and the host receives the encrypted value, decodes the encrypted value, compares the stored terminal ID with the decoded terminal ID, authenticates the terminal once more and backs up the consumption information through days, weeks and months and a timer in an archive file when authentication is complete. 4. Value-storing electric energy meter including an input and output terminal (18) for electric power lines for measuring the amount of consumed electric energy, characterized in that it comprises: an administration device (9) for measuring the voltage and current in an electric power line and calculating the consumed electrical energy; an electric power modem (13) for performing data communication between a host and the terminal through an electric power line; a security storage device including a secure access module (SAM, "Secure Access Module") (164) comprising of a CPU (162) and an encryption key and an encryption algorithm for value storage and a store value module (SVM, "Store Value Module") (166) for storing credit value, for preventing fraudulent use of value information and hacking, prohibiting a cryptographic attack, and arranged to request a process of authentication to the SAM (164) for requesting a settlement unit (10) from the SVM (166); an on/off switch relay (i) for switching off the supply of electrical energy according to the balance results from the SVM (166); and an exchanger for settlement units (10) to reduce the settlement units from the input of the value information from the SVM (166) according to the amount of consumed electrical energy per unit of time, the SVM (166) is arranged to request a new settlement unit (10) to a supply of settlement units when an internal settlement unit is used up. 5. Value-storing electric energy meter according to patent claim 4, characterized in that it further comprises a device (12) for reading and writing to IC cards (5) to allow use with other meters such as water meters, gas meters and calorimeters by inserting a IC card (5) into the electric energy meter, receive values connected to the host, record values in the inserted IC card (5) and read the received values from the IC card (5). 6. Value-storing electrical energy meter according to patent claim 5, characterized in that the device (12) for reading and writing to IC cards (5) is used in water, gas and heat meters using an IC card method in off-line state, by recording added values for things such as gas and water in the IC card (5) through the electrical energy modem (13), where it is possible to store electrical energy values in the IC card (5) by including a communication port comprising of eight terminals defined in ISO 7816 Part 2 which have Vcc, Clk, DIO, Reset and Gnd for synchronous and asynchronous communication with the IC card (5). 7. Value-storing electrical energy meter according to patent claim 4, characterized in that it further comprises: an AC/DC converter (14) for supplying an operating voltage required by the electrical energy meter; a power consumption sensor (3) for recording that the electrical energy is used normally when the output of a sensor is "0", and that the terminals are bypassed and the electrical energy is not used when the output of the sensor is "1"; and a buzzer (4) for generating an audible alarm and guiding a user to transfer and store values when a last unit of account (10) is received upon request for a new unit of account from the SVM (166) after the balance of units of account ( 10) is used up. 8. The value-storing electrical energy meter according to patent claim 4, characterized in that the device (9) for managing the electrical energy consumption comprises: a shunt resistor (2) for measuring an amount of AC current; a voltage divider (6) for connecting two resistors in series and selecting a voltage range given by the ratio of the resistors to adjust the AC voltage of the electric power line within the range of the input voltage of a voltmeter. an analog to digital converter (8) for converting an AC current signal, flowing through the shunt resistor (2), into a digital signal of 16 or 20 bits; and an analog to digital converter (7) for converting an AC voltage into a digital signal of 16 bits; where the phase of the voltage is compared with the phase of the current and an angle by which the two phases differ from each other is calculated and given at an output as a signal to apply differentiated prices. 9. Value-storing electrical energy meter according to patent claim 4, characterized in that it further comprises an electrical power consumption table (11) to differentially apply incremental prices for the power consumption such as 50%, 75%, 100%, 150% and 200% according to the offer and the electrical energy demand states based on a real-time clock comprising of year, month, hour, minute and second. 10. Value-storing electrical energy meter according to patent claim 4, characterized in that it comprises a non-dynamic memory (15) which stores a characteristic 3 byte ID number and which records a state of the electrical energy consumption (9) for a specific period of hours , days or months in order to be able to remotely monitor low or abnormal consumption of electrical energy and perform an electronic sealing function. 11. Value-storing electrical energy meter according to patent claim 4, comprising an LCD screen (17) for visually displaying the balance of the value, the transfer state of the value, the status of real-time electrical energy consumption (9) and states of accumulated electrical energy consumption (9). 12. Value-storing electric energy meter according to patent claim 5, characterized in that the value-storing electric energy meter can be used for simple and sound-using aids when paying fees with a SET (SET, secure electronic transaction ("Secure Electronic Transactions")) electronic commercial transaction process by using credit- and direct payment card arranged in an IC card reader and writer (12), further provided: telecommunication means (20) for performing audio communication with a person in the management of the host server or transmitting an audible message to help the user store a value; and a keyboard (21) for a user to directly request the value to be stored. 13. Value-storing electrical energy meter according to patent claim 4, characterized in that the electrical input and output terminal (18) of the electrical energy meter comprises a cover and a physical seal (64) to avoid physical tapping, unauthorized and abnormal use of electrical power. 14. Value-storing electrical energy meter according to patent claim 4, characterized in that it further comprises a protection (19) for absorbing lightning or voltage waves on an electrical energy line to a supplier. 15. Value-storing electrical energy meter according to patent claim 4, characterized in that the electrical energy line of a transformer to reduce 3.3 kV to a general, commonly used voltage of 110V/220V/240V further comprises a current transformer for measuring the total amount of current; in which the electric energy meter is connected via a network to local service and monitoring units (LSs) equipped with power modems (13) for communication with a maximum of 256 value-storing electric energy meters on an electric power line and an area service & monitoring unit (AS) to control a maximum of 256 LSs. 16. Value-storing electric energy meter according to patent claim 15, characterized in that the host further comprises a server for an energy seller (53) and an energy reseller (50) for issuing IC cards (52) to a subscriber when using an IC card (52 ) which has a master key (51), the key being arranged to automatically transfer values when the subscriber requests the value to be stored, monitor and manage the legal use of the value at the subscriber, aggregate and analyze the detailed status of the subscriber's energy consumption ( 9), and in this way again determine a price for the sale of the electrical energy, wherein each server is connected to a plurality of ASs to manage and monitor the value transmitting and storing electrical energy meter which can be connected to ASs and LSs in a tree structure and to store values in the value transmitting and storing electrical energy meter. 17. Value-storing electric energy meter according to patent claim 15, characterized in that it further comprises a voltage divider (6), an analog to digital converter (7) for voltage, an analog to digital converter (8) for current, a switch relay (1) and a shunt resistor (2) so that if at least two types of electrical energy sources (14) selectively use other voltages or simultaneously use at least two types of voltages, it is possible to separately measure and control the respective amounts of current.