KR20140110395A - A Telemetering System transmitting encoded data - Google Patents

Abstract

[0001] The present invention relates to an automatic meter reading system for remotely checking and reading meter reading information of each meter, and more particularly, to an automatic meter reading system for reading meter reading information data transmitted and collected via a meter, a remote meter reading terminal, a repeater, a broadband collector, Thereby securing the security of the meter reading information and preventing arbitrary change or modulation of the meter reading information, thereby maximizing the stability of the remote meter reading system. Also, random key values using a random number generator are selected and data is encrypted using an encryption algorithm The random number generator used in the cryptographic module maximizes the stability and reliability. In particular, the random number generator used in the cryptographic module has the seed value as the meter ID, the weighing value, the rattle probe terminal ID, the power measurement value, the power noise, Cancer that maximizes stability and reliability by using metering and measurement It relates to a remote meter reading system using the encrypted data is sent or received.

Description

[0001] The present invention relates to a telemetering system transmitting encoded data,

[0001] The present invention relates to an automatic meter reading system for remotely checking and reading meter reading information of each meter, and more particularly, to an automatic meter reading system for reading meter reading information data transmitted and collected via a meter, a remote meter reading terminal, a repeater, a broadband collector, Thereby securing the security of the meter reading information and preventing arbitrary change or modulation of the meter reading information, thereby maximizing the stability of the remote meter reading system. Also, random key values using a random number generator are selected and data is encrypted using an encryption algorithm The random number generator used in the cryptographic module maximizes the stability and reliability. In particular, the random number generator used in the cryptographic module has the seed value as the meter ID, the weighing value, the rattle probe terminal ID, the power measurement value, the power noise, Measurement and transmission time (RTC) of metering value. It relates to a remote meter reading system employing a data transmitting and receiving encrypted maximize.

Currently, there is a common method to meter the public energy such as gas, water, electricity, etc. by visiting each meter by a meter probe person. Specifically, a method is used in which the meter reading unit directly displays the indicator of the meter, writes the meter amount on a check list, transmits it to a wired or wireless line using a communication means such as a PDA, and calculates the usage amount integrally by the supplier.

In recent years, a system has been developed to remotely meter and remotely transmit and receive meter reading information in order to reduce the inconvenience that a meter reader must visit a customer with a meter installed. The following (Patent Document) relates to such a conventional remote meter reading system.

(Patent Literature)

Registered Patent Publication No. 10-1052081 (2011. 07. 27, Announcement) "Remote meter reading terminal and remote meter reading system using the same and control method thereof"

However, in the conventional remote meter-reading system as described above, the meter reading information data measured and transmitted to and from the management server through the remote meter terminal is directly transmitted and received. Therefore, in the case of using wireless transmission / reception which is vulnerable to security, The information security problem will be caused to flow out as it is.

In particular, the meter reading information data measured by the meter and transmitted / received to / from the management server through the remote meter reading terminal becomes a reference for the pricing for each household, so that when the meter reading information data is falsified or altered, And the reliability of the remote meter reading is deteriorated.

Accordingly, there is a need for an information security authentication technology that secures stability and reliability of meter reading information data transmitted and read remotely, and a remote meter reading system capable of transmitting and receiving meter reading information data reliably and reliably using the information security authentication technique .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and system for securing security of meter reading information by encrypting and transmitting meter reading information data transmitted and collected through a meter, a remote meter reading terminal, a repeater, a broadband collector, And to provide an automatic meter reading system that utilizes encrypted data transmission / reception that can maximize system stability.

It is another object of the present invention to provide a remote meter reading system using encrypted data transmission and reception that maximizes reliability and reliability by selecting a random key value using a random number generator and encrypting data using an encryption algorithm.

It is still another object of the present invention to provide a random number generator for use in a cryptographic module, wherein the seed value includes a meter ID, a weighing value, a rattle probe terminal ID, a power measurement value, a power noise, The present invention provides a remote meter reading system using encrypted data transmission and reception that maximizes reliability and reliability by using measurement of value and transmission time (RTC).

In order to achieve the object of the present invention, an automatic meter reading system using encrypted data transmission and reception includes the following configuration.

An automatic meter reading system using encrypted data transmission / reception according to an embodiment of the present invention includes a plurality of meters; A plurality of remote meter reading terminals, connected to the meters, for acquiring meter reading information about the usage amount of the meters from the meters and wirelessly transmitting the obtained meter reading information; A relay for receiving meter reading information from the remote meter reading terminal and transmitting the meter reading information by wireless; A broadband collector for receiving meter reading information from the repeater and wirelessly transmitting the meter reading information; And a management server for receiving the meter reading information from the broadband collector and storing and managing the meter reading information in a database, wherein the remote meter reading terminal includes an encryption module for encrypting meter reading information data, And a decryption module for decrypting the decryption key.

According to another embodiment of the present invention, in the remote metering system using encrypted data transmission / reception according to the present invention, the encryption module selects a random key value using a random number generator and encrypts data using an encryption algorithm do.

According to another embodiment of the present invention, in the remote metering system using the encrypted data transmission / reception according to the present invention, the random number generator used in the encryption module may include a meter ID, a metric value, Measurement and transmission time of the weighing value are used.

According to another embodiment of the present invention, in the remote meter-reading system using the encrypted data transmission / reception according to the present invention, the random number generator used in the encryption module may include a remote meter ID (ID) Intensity, and power source noise are additionally used.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention encrypts and transmits meter reading information data transmitted and collected via a meter, a remote meter reading terminal, a repeater, a broadband collector, and a server, thereby securing security of meter reading information and preventing arbitrary change or modulation of the meter reading information, Thereby maximizing the stability of the apparatus.

The present invention has the effect of maximizing stability and reliability by selecting a random key value using a random number generator and encrypting data using an encryption algorithm.

The present invention is characterized in that the random number generator used in the encryption module has a seed value as a meter ID, a measurement value, a rattle probe terminal ID, a power measurement value, a power noise, a received signal strength of a communication signal, The use of the transmission time (RTC) or the like has the effect of maximizing stability and reliability.

1 is a block diagram of an automatic meter reading system according to an embodiment of the present invention;
Fig. 2 is a block diagram showing the configuration of the remote meter-reading system of Fig. 1
3 is a block diagram showing a configuration of a remote meter reading terminal
4 is a block diagram showing the configuration of the management server
5 is a block diagram illustrating an encryption process in the encryption module
6 is a block diagram illustrating a decoding process in the decoding module

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an automatic meter reading system using encrypted data transmission / reception according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, rather than excluding other elements, unless specifically stated otherwise.

An automatic meter reading system using encrypted data transmission / reception according to an embodiment of the present invention includes a plurality of meters (10); A plurality of remote meter reading terminals 20 connected to the meter 10 to acquire meter reading information about the usage amount of the meter from the meter 10 and wirelessly transmit the obtained meter reading information; A repeater 30 for receiving meter reading information from the remote meter reading terminal 20 and wirelessly transmitting the meter reading information; A broadband collector (40) for receiving meter reading information from the relay device (30) and transmitting the meter reading information wirelessly; And a management server 50 for receiving the meter reading information from the broadband collector 40 and storing and managing the meter reading information in the database.

The meter (10) has a meter reading unit installed in each home or building and measuring the usage amount of gas, water, electricity, etc., and measuring and obtaining the usage amount of gas, water, electricity, A wired / wireless communication unit for transmitting information stored in the memory, and a controller for controlling and controlling the meter reading unit, the memory, and the wired / wireless communication unit. That is, the meter 10 acquires the amount of usage as data through a meter reading unit utilizing a meter reading the amount of usage electronically (for example, by using a reed switch sensor and a reed switch to meter the usage amount electronically) (IrDA), a Zigbee, an RF (Radio Frequency Identification), and an RF (Radio Frequency Identification) signal to the remote meter reading terminal 20 to be described later via the wired / wireless communication unit under the control of the control unit. A radio module using any one of a radio module, a radio module, a communication module (Radio Rarequency), and a Bluetooth module.

The remote meter reading terminal 20 is configured to acquire meter reading information about the usage amount of the meter 10 and to transmit the obtained meter reading information to the remote meter reading terminal 20 by radio. A wire / wireless communication unit 210; A memory 220 for storing the meter reading information received from the meter 10 through the wired / wireless communication unit 210; A battery 230 for supplying power; And a wireless communication module 250 for transmitting the stored meter reading information data to the repeater 30.

That is, the remote meter reading terminal 20 receives the meter reading information from the meter 10 through the wired / wireless communication unit 210, stores the received meter reading information data in the memory 220, 250 to the management server 50 via the repeater 30 and the broadband collector 40. At this time, the wireless communication module 250 may utilize a wireless scheme such as Zigbee, Bluetooth, etc., preferably a wireless network communication module of an RF communication module. The wireless communication module 250 may include a signal measuring unit 251 capable of measuring a strength of a communication signal to measure the intensity of a communication signal and detect and transmit the most optimal communication signal channel. (Receive Signal Strength Indication) measuring function for converting the intensity of the received communication signal into a digital value and measuring the intensity of the communication signal as a digital value. It is possible to measure and store the intensity and transmit the meter reading information data by setting a communication channel with the repeater 30 in which the highest signal intensity among the peripheral repeaters 30 is measured. In addition, the remote meter reading terminal 20 may be equipped with a battery 230 and a real time clock (RTC) 240 for measuring and recording real time information.

In particular, in the present invention, the remote meter reading terminal 20 includes an encryption module 260 for encrypting meter reading information data to encrypt meter reading information data transmitted from the remote meter reading terminal 20 to the management server 50 Thereby securing the security of the meter reading information by preventing the meter reading information from being arbitrarily changed or altered, thereby maximizing the stability of the remote meter reading system.

The repeater 30 receives the meter reading information from the remote meter reading terminal 20 and wirelessly transmits the meter reading information to the broadband collector 40. To this end, A memory for storing meter reading information data transmitted from the remote meter reading terminal 20, a broadband communication module for transmitting and receiving information to and from the broadband collector 40, And a control unit. That is, the repeater 30 receives meter reading information data or the like transmitted from the remote meter terminal 20 through a wireless communication module, stores the meter reading information data in a memory, and transmits the data to a broadband communication module (for example, a CDMA communication Module or the like may be utilized) to the broadband collector 40 to be described later.

The broadband collector 40 receives the meter reading information from the repeater 30 and wirelessly transmits the meter reading information to the management server 50. To this end, the broadband collector 40 receives the meter reading information from the relay 30, A memory for storing meter reading information data transmitted from the repeater 30 or the like through a broadband communication module and a controller for controlling and controlling the entire broadband collector 40 Configuration. That is, the broadband collector 40 receives the meter reading information data and the like transmitted from the repeater 30 through the broadband communication module, stores the meter reading information data in the memory, and transmits the meter reading information data to the management server 50, and the like.

The management server 50 is configured to receive the meter reading information from the broadband collector 40, to manage the meter reading information, and to transmit various command signals. To this end, the management server 50 controls the broadband collector 40, A database 520 (e.g., a hard disk or a RAM) for storing meter reading information transmitted from the broadband collector 40 through the broadband communication module 510, and the like And a control unit 530 for controlling the entire broadband communication module 510 and the database 520. That is, the management server 50 receives the meter reading information and the like transmitted from the broadband collector 40 through the broadband communication module 510 under the control of the controller 530, stores it in the database 520, To provide relevant data.

In particular, in the present invention, the meter reading information data transmitted from the remote meter reading terminal 20 to the management server 50 is encrypted through the encryption module 260 for encrypting the meter reading information data by the remote meter reading terminal 20, The management server 50 further includes a decryption module 540 for decrypting the data transmitted in the encrypted manner so that the encrypted data can be decrypted by the decryption module 540. [ The accuracy of information security can be ensured through accurate decoding, and a detailed description thereof will be described below.

Hereinafter, the security of the meter reading information in the wireless remote transmission / reception process of the meter reading information data or the like, which is a main feature of the present invention, is secured and the data for preventing the arbitrary change or modulation of the meter reading information is maximized The encryption transmission and the decryption process for the received encrypted data will be described in detail.

First, the encryption module 260 of the remote meter reading terminal 20 selects a random key value using a random number generator and encrypts the meter reading information data using an encryption algorithm (ARIA, SEED, AES, BES, etc.) The random number generator used in the encryption module may include a seed value as a meter ID, a weighing value, a rattle probe ID, a power measurement value, a power noise, a received signal strength of a communication signal, Value measurement and transmission time (RTC).

Randomness is the most important item in designing various cryptographic algorithms, which makes the random number generator the most important base unit in most cryptographic systems. Generally, a random number generator can be roughly classified into an RNG generating a random number using the randomness of a natural phenomenon and a PRNG (Pseudo-Random Number Generator) generating a pseudo random number appearing as a random number. In the present invention, we can use a PRNG type random number generator that generates a random number sequence in a more efficient manner than an RNG using an input value called a seed value.

Particularly, in the present invention, as the seeds of the random number generator, a meter ID, a weighing value, a rattle probe ID, a power measurement value, a power noise, a received signal strength of a communication signal RSSI, metric measurement and transmission time (RTC), etc., it is possible to maximize the uniqueness in the encryption process of the present invention and thus the stability and reliability of the encrypted information.

The meter ID is a tare number of the meter 10 that measures the metering value of each furniture (office, building) serving as a basis of the meter reading information data in the remote metering system of the present invention. And each unique number is held as an ID.

The weighing value is a value obtained by measuring the amount of water (water, gas, etc.) used by the meter (10) disposed (installed) in each furniture (office or building) Since the measured value is changed, randomness is obtained.

The identification ID of the rattle probe terminal is a unique number of the remote meter reading terminal 20 that receives a measurement value from the meter 10 and remotely transmits the measured value to the remote meter reading terminal 20, (ID).

The power measurement value is used to supply power to the remote meter reading terminal 20 (for example, the battery 230), and the power measurement value may also be a fine Since there is a change, it becomes random.

The power supply noise utilizes power supply noise generated by a configuration (for example, the battery 230) that supplies power to the remote meter-reading terminal 20, that is, electronic noise, ) Is randomly changed every measurement, so it has randomness.

The received signal strength RSSI of the communication signal is calculated by multiplying the intensity of the communication signal measured by the signal measuring unit 251, which measures the strength of the communication signal of the wireless communication module 250 of the remote meter terminal 20, (Receive Signal Strength Indication) value, which is converted into a value, is also used. This is also random, since it changes irregularly every measurement.

The measurement and transmission time (RTC) of the measurement value may be measured and / or measured by the RTC 240 (Real Time Clock), which measures and records the real time information of the remote meter terminal 20 So that each measurement time and / or transmission time also changes irregularly every time of measurement or transmission, so that it has randomness.

As described above, the encryption module 260 of the remote meter reading terminal 20 uses the seed value of the random number generator as the meter ID unique to the present invention, the weighing value, the rattle probe ID, (ARIA, SEED, AES, BES, etc.) are selected by selecting a random key value by using a power supply noise, a power supply noise, a received signal strength of a communication signal, Thereby securing the security of the meter reading information data and preventing arbitrary change or modulation of the meter reading information data, thereby maximizing the stability of the remote meter reading system.

The decryption module 540 of the management server 50 may share the random key value used by the encryption module 260 of the remote meter terminal 20 to encrypt the encrypted data and the encrypted data And correctly decrypts the meter reading information data encrypted and encrypted using the same algorithm (ARIA, SEED, AES, BES, etc.), stores it in the database 520, and provides related information when necessary.

As described above, the remote meter reading system using the encrypted data transmission / reception according to the present invention transmits and collects data through the meter 10, the remote meter reading terminal 20, the repeater 30, the broadband collector 40, In order to secure the security of the meter reading information data and to prevent arbitrary change or modulation of the meter reading information data by encrypting and transmitting the meter reading information data, it is possible to select (generate) a random key value using a random number generator, Maximizes reliability and reliability by using meter ID, weighing value, rattle probe ID, power measurement value, power noise, signal strength of communication signal, measurement of measurement value and transmission time (RTC) .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as belonging to the scope.

10: Meter 20: Remote meter reading terminal
210: wired / wireless communication unit 220: memory
230: Battery 240: RTC
250: wireless communication module 251: signal measuring unit
260: Encryption module 30: Repeater
40: broadband collector 50: management server
510: Broadband communication module 520: Database
530: Control section 540: Decryption module

Claims (4)

A plurality of meters;
A plurality of remote meter reading terminals, connected to the meters, for acquiring meter reading information about the usage amount of the meters from the meters and wirelessly transmitting the obtained meter reading information;
A relay for receiving meter reading information from the remote meter reading terminal and transmitting the meter reading information by wireless;
A broadband collector for receiving meter reading information from the repeater and wirelessly transmitting the meter reading information;
And a management server for receiving the meter reading information from the broadband collector and storing and managing the meter reading information in a database,
Wherein the remote meter reading terminal comprises an encryption module for encrypting the meter reading information data and the management server includes a decryption module for decrypting the meter reading information data encrypted and transmitted. The method according to claim 1,
Wherein the encryption module selects a random key value using a random number generator and encrypts data using an encryption algorithm. 3. The method of claim 2,
Wherein the random number generator used in the encryption module uses a meter ID, a metering value, a power measurement value, and a metering value measurement and transmission time as a seed value. The method of claim 3,
Wherein the random number generator used in the encryption module further uses an ID of a remote meter terminal, a received signal strength of a communication signal, and power noise as a seed value.

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