CN201387642Y - Single-phase electronic type multi-rate prepayment electric energy meter - Google Patents
Single-phase electronic type multi-rate prepayment electric energy meter Download PDFInfo
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- CN201387642Y CN201387642Y CN200920009918U CN200920009918U CN201387642Y CN 201387642 Y CN201387642 Y CN 201387642Y CN 200920009918 U CN200920009918 U CN 200920009918U CN 200920009918 U CN200920009918 U CN 200920009918U CN 201387642 Y CN201387642 Y CN 201387642Y
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Abstract
The utility model relates to a single-phase electronic type multi-rate prepayment electric energy meter, which belongs to the electronic type electric energy meter. The single-phase electronic type multi-rate prepayment electric energy meter comprises a basic meter which is connected with a main control single chip through a data line, and is characterized in that the main control single-chip processor is also connected with a digital display, a relay, an ESAM module and an IC card interface for reading a CPU intelligent card respectively through data lines. The utility model adopts the CPU intelligent card and the embedded ESAM module for safe control as the medium for storage and transmission of data information, and has the advantages of high safety and anti-attack performances.
Description
Technical field
The utility model relates to electronic electric energy meter, a kind of specifically single-phase electronic multi-rate prepayment meter.
Background technology
Existing prepayment meter adopts logic encryption card to realize pre paid functionality more.Logic encryption card have prevent to the card in information arbitrarily rewrite the storage IC-card of function; when being operated, encrypted card must at first check password in the card; only check correct; when sending a string correct answer signal in the card; could be to sticking into the correct operation of row, but owing to only once authenticate, and do not have other safety precautions; cause the leakage of password and the generation of pseudo-card easily, its security performance is very low.And traditional logic encryption card uses the simple logic mode, is easy to be cracked.
The utility model content
At the defective that exists in the prior art, the purpose of this utility model is to provide a kind of single-phase electronic multi-rate prepayment meter, adopt the medium of CPU smart card and embedded-type security control ESAM module, have very high security and anti-aggressive as data information memory and transmission.
For reaching above purpose, the technical scheme that the utility model is taked is:
A kind of single-phase electronic multi-rate prepayment meter, comprise base table, base table is connected with the main control singlechip chip by data line, it is characterized in that: the main control singlechip chip also by data line respectively with number demonstration, relay, ESAM module, the IC-card interface that is used to read the CPU smart card is connected.
On the basis of technique scheme, comprise ammeter application function bottom software module, many Threshold Alerts of dump energy module, intelligent card data read-write and processing module in the main control singlechip chip, computation chip in the base table is gathered current signal, is gathered voltage signal by divider resistance by copper-manganese, signal is input to the main control singlechip chip after isolating conversion with the form of pulse input through photoelectricity, and the main control singlechip chip is reserved with the interface that is used to connect carrier chip.
On the basis of technique scheme, said ESAM module is supported the key management system of multistage dispersion, supports the Ministry of Construction or PBOC key management system.
On the basis of technique scheme, safe processor embedded in the embedded safe processor in the said ESAM module, said safe processor and CPU smart card is identical.
On the basis of technique scheme, said safe processor is 8 safe processors.
On the basis of technique scheme, said 8 safe processors can carry out DES, 3DES cryptographic calculation, have to add the ability that random number participates in computing in calculating process, support RSA Algorithm.
Single-phase electronic multi-rate prepayment meter described in the utility model adopts the medium of CPU smart card and embedded-type security control ESAM module as data information memory and transmission, has very high security and anti-aggressive.
Description of drawings
The utility model has following accompanying drawing:
The structural representation of Fig. 1 single-phase electronic multi-rate prepayment meter
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structural representation of single-phase electronic multi-rate prepayment meter described in the utility model, comprise base table, main control singlechip chip, digital display module, relay, ESAM module and intelligent card interface (IC-card interface), it is characterized in that: base table is connected with the main control singlechip chip by data line, the main control singlechip chip also by data line respectively with number demonstration, relay, ESAM module, the IC-card interface that is used to read the CPU smart card is connected.In the CPU smart card (user's electricity card) microprocessor and IC-card operating system (COS) are arranged, when the CPU smart card is operated, can carry out encryption and decryption algorithm (algorithm and password all are difficult for cracking) under existing computing power, the safety certification that needs between user and the IC-card system to carry out repeatedly (comprises internal authentication and external authentication, and speed is exceedingly fast), improved the security performance of system, good effect has been arranged for the generation that prevents pseudo-card.During use, the user needs to hand over money to purchase electricity at power supply department, is write into user's electricity card on institute's electric weight of purchasing motor on sale, passes to ammeter by user's electricity card, and user's electricity card can guarantee that through repeatedly encrypting the user uses reliably.When dump energy is lower than the warning electric weight, multiple modes such as employing sound, light remind the user in time to purchase, after purchasing electric weight uses up, relay will cut off current supply circuit automatically in the table, the read-write operation of CPU smart card is to be undertaken by chip operating system COS (Chip Operating System) in blocking, and the cipher key system and the security authentication mechanism that set in card by hair fastener unit are controlled.Digital main demonstration power consumption, dump energy, alerting signal and the malfunction of showing.
On the basis of technique scheme, comprise ammeter application function bottom software module, many Threshold Alerts of dump energy module, intelligent card data read-write and processing module in the main control singlechip chip, computation chip in the base table is gathered current signal, is gathered voltage signal by divider resistance by copper-manganese, signal is input to the main control singlechip chip after isolating conversion with the form of pulse input through photoelectricity, and the main control singlechip chip is reserved with the interface that is used to connect carrier chip.After the main control singlechip chip receives pulse signal, by the input pulse number being added up and realizing metering to electric energy according to pulse constant size; When the main control singlechip chip by data line with after carrier chip is connected, the main control singlechip chip to low-voltage power line, is realized carrier communication through carrier chip output data information by serial communication, can be used for the system's setting and the remote automatic meter reading of electric energy meter; By ammeter application function bottom software module, exportable control signal is also finished the ESAM module and the command transfer of user's electricity card; Carry out power supply disconnection or the closure signal that the main control singlechip chip sends by switch relay; Store the ammeter operational factor, treasure the purview certification key by the ESAM module, finish the safety certification to user's electricity card, every electric energy meter should be installed the ESAM module separately, and module can optionally be pre-installed main working key.
On the basis of technique scheme, said ESAM module is supported the key management system of multistage dispersion, supports the Ministry of Construction or PBOC key management system.
On the basis of technique scheme, safe processor embedded in the embedded safe processor in the said ESAM module, said safe processor and CPU smart card is identical.
On the basis of technique scheme, said safe processor is 8 safe processors.
On the basis of technique scheme, said 8 safe processors can carry out DES, 3DES cryptographic calculation, have to add the ability that random number participates in computing in calculating process, support RSA Algorithm.All embedded 8 safe processors can carry out DES, 3DES cryptographic calculation in ESAM module and the CPU smart card, add the participation of random number simultaneously in the calculating process, use existing means and resource, will be difficult to crack and copy.The ESAM module is supported the key management system of multistage dispersion, can support the Ministry of Construction or PBOC key management system, supports RSA Algorithm, and this has guaranteed that user's electricity card can one card for multiple uses, can bring the card system in city into.
Characteristics of the present utility model are:
1. the mode that adopts ESAM module and CPU smart card to combine is guaranteed the security of concluding the business;
2.ESAM module and CPU smart card carry out inside and outside authentication, and realize user's electricity The card data readback;
3. realize many rate meterings of single-phase electric energy;
4. possesses many Threshold Alerts of dump energy function.
ESAM card of the present utility model adopts dynamic data to encrypt: in the encrypted transmission mistake of data In the journey, adopt the method for dynamic key, make the key one-time pad of data encryption, increased number Reportedly defeated security. Its idiographic flow is: at first produce random number R ND by terminal, and use This random number and master key production process key add clear data with process key then Close, when transmitting data to an other end, transmit simultaneously random number and data ciphertext, another End is deciphered with process key. Because process key produces at random, and is stored among the RAM, Disappear after the power down, therefore guaranteed randomness and the security of key, can adopt once simultaneously One close or time dependent mode so that key is followed the tracks of without any meaning, has guaranteed number The safety of reportedly failing.
The utility model is the application of supported data signature also: utilize the characteristics of asymmetric arithmetic to realize Digital signature guarantees the uniqueness of identity in the authentication process, can not the altering of data. Eventually Preset the ESAM with RSA Algorithm in the end, generate RSA key pair with ESAM when terminal is dispatched from the factory, Private key directly is kept among the ESAM, and the PKI of being sent by ESAM is by the background server system storage. Its idiographic flow is: in the process of identity identifying and authenticating, terminal is used the private key among the ESAM Critical data is signed, and the terminal public key that the background system utilization is stored is signed data The name checking, after authentication was passed through, background system also can carry out closing key-encrypting key with the PKI of terminal Encrypt, terminal with the decrypt ciphertext of private key with key after, as encryption key, in subsequent delivery During data, sensitive data is carried out des encryption with the encryption key that sends, can accelerate The speed of data encryption has guaranteed the security in the key transmittance process simultaneously.
Claims (4)
1. single-phase electronic multi-rate prepayment meter, comprise base table, base table is connected with the main control singlechip chip by data line, it is characterized in that: the main control singlechip chip also by data line respectively with number demonstration, relay, ESAM module, the IC-card interface that is used to read the CPU smart card is connected.
2. single-phase electronic multi-rate prepayment meter as claimed in claim 1, it is characterized in that: comprise ammeter application function bottom software module, many Threshold Alerts of dump energy module, intelligent card data read-write and processing module in the main control singlechip chip, computation chip in the base table is gathered current signal, is gathered voltage signal by divider resistance by copper-manganese, signal is input to the main control singlechip chip after isolating conversion with the form of pulse input through photoelectricity, and the main control singlechip chip is reserved with the interface that is used to connect carrier chip.
3. single-phase electronic multi-rate prepayment meter as claimed in claim 1 or 2 is characterized in that: safe processor embedded in the embedded safe processor in the said ESAM module, said safe processor and CPU smart card is identical.
4. single-phase electronic multi-rate prepayment meter as claimed in claim 3 is characterized in that: said safe processor is 8 safe processors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920009918U CN201387642Y (en) | 2009-02-18 | 2009-02-18 | Single-phase electronic type multi-rate prepayment electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920009918U CN201387642Y (en) | 2009-02-18 | 2009-02-18 | Single-phase electronic type multi-rate prepayment electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387642Y true CN201387642Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920009918U Expired - Lifetime CN201387642Y (en) | 2009-02-18 | 2009-02-18 | Single-phase electronic type multi-rate prepayment electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387642Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833822A (en) * | 2010-04-02 | 2010-09-15 | 深圳市科陆电子科技股份有限公司 | Security protection method for electric power prepaid system |
| CN102111265A (en) * | 2011-01-13 | 2011-06-29 | 中国电力科学研究院 | Method for encrypting embedded secure access module (ESAM) of power system acquisition terminal |
| CN102143162A (en) * | 2011-01-21 | 2011-08-03 | 郑州华润燃气有限公司 | Encryption control circuit and operation control method for embedded remote transmission metering instrument |
| CN103220137A (en) * | 2013-04-11 | 2013-07-24 | 成都秦川科技发展有限公司 | Remote control intelligent electricity meter with embedded information security management module |
| CN103218875A (en) * | 2013-04-11 | 2013-07-24 | 成都秦川科技发展有限公司 | Integrated circuit (IC) card intelligent electric energy meter embedded with information safety management module |
| CN103679062A (en) * | 2013-12-23 | 2014-03-26 | 上海贝岭股份有限公司 | Intelligent electric meter main control chip and security encryption method |
| CN104330619A (en) * | 2014-09-16 | 2015-02-04 | 杭州西力电能表制造有限公司 | Transformer electric energy meter and thermal equilibrium calculating alarm method thereof |
| CN104361731A (en) * | 2014-11-13 | 2015-02-18 | 国网河南省电力公司南阳供电公司 | Remote electric meter reading system |
| CN106228694A (en) * | 2016-07-14 | 2016-12-14 | 重庆人文科技学院 | A kind of intellective IC card measuring instrument with hardware encryption function |
| CN110300396A (en) * | 2019-05-27 | 2019-10-01 | 苏宁智能终端有限公司 | The WIFI distribution method, apparatus and terminal of smart machine |
-
2009
- 2009-02-18 CN CN200920009918U patent/CN201387642Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833822A (en) * | 2010-04-02 | 2010-09-15 | 深圳市科陆电子科技股份有限公司 | Security protection method for electric power prepaid system |
| CN102111265B (en) * | 2011-01-13 | 2014-03-26 | 中国电力科学研究院 | Method for encrypting secure chip of power system acquisition terminal |
| CN102111265A (en) * | 2011-01-13 | 2011-06-29 | 中国电力科学研究院 | Method for encrypting embedded secure access module (ESAM) of power system acquisition terminal |
| CN102143162A (en) * | 2011-01-21 | 2011-08-03 | 郑州华润燃气有限公司 | Encryption control circuit and operation control method for embedded remote transmission metering instrument |
| CN103218875B (en) * | 2013-04-11 | 2015-03-25 | 成都秦川科技发展有限公司 | Integrated circuit (IC) card intelligent electric energy meter embedded with information safety management module |
| CN103218875A (en) * | 2013-04-11 | 2013-07-24 | 成都秦川科技发展有限公司 | Integrated circuit (IC) card intelligent electric energy meter embedded with information safety management module |
| CN103220137A (en) * | 2013-04-11 | 2013-07-24 | 成都秦川科技发展有限公司 | Remote control intelligent electricity meter with embedded information security management module |
| CN103220137B (en) * | 2013-04-11 | 2016-01-20 | 成都秦川科技发展有限公司 | Be embedded with the remote-control intelligent electric energy meter of information security management module |
| CN103679062A (en) * | 2013-12-23 | 2014-03-26 | 上海贝岭股份有限公司 | Intelligent electric meter main control chip and security encryption method |
| CN103679062B (en) * | 2013-12-23 | 2017-02-08 | 上海贝岭股份有限公司 | Intelligent electric meter main control chip and security encryption method |
| CN104330619A (en) * | 2014-09-16 | 2015-02-04 | 杭州西力电能表制造有限公司 | Transformer electric energy meter and thermal equilibrium calculating alarm method thereof |
| CN104361731A (en) * | 2014-11-13 | 2015-02-18 | 国网河南省电力公司南阳供电公司 | Remote electric meter reading system |
| CN106228694A (en) * | 2016-07-14 | 2016-12-14 | 重庆人文科技学院 | A kind of intellective IC card measuring instrument with hardware encryption function |
| CN110300396A (en) * | 2019-05-27 | 2019-10-01 | 苏宁智能终端有限公司 | The WIFI distribution method, apparatus and terminal of smart machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 266061 Shandong Province, Qingdao city Laoshan District Songling Road No. 169 Patentee after: QINGDAO ITECHENE TECHNOLOGIES CO., LTD. Address before: 266061 Shandong Province, Qingdao city Laoshan District Songling Road No. 169 Software Park Room 403 Patentee before: Qingdao Qiancheng Electronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |
|
| CX01 | Expiry of patent term |