CN103220135A - IC (Integrated Circuit) card intelligent gas meter with information safety management function - Google Patents
IC (Integrated Circuit) card intelligent gas meter with information safety management function Download PDFInfo
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- CN103220135A CN103220135A CN2013101143972A CN201310114397A CN103220135A CN 103220135 A CN103220135 A CN 103220135A CN 2013101143972 A CN2013101143972 A CN 2013101143972A CN 201310114397 A CN201310114397 A CN 201310114397A CN 103220135 A CN103220135 A CN 103220135A
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Abstract
The invention discloses an IC (Integrated Circuit) card intelligent gas meter with an information safety management function, belonging to an IC card intelligent gas meter. The IC card intelligent gas meter comprises an IC card intelligent gas meter terminal main controller and a FLASH memory, wherein the IC card intelligent gas meter terminal main controller is accessed to an IC card information exchange module through an external data interface; the external data interface is used for executing sole data communication between the IC card intelligent gas meter terminal main controller and the IC card information exchange module; through the adding of the information safety management function in the IC card intelligent gas meter terminal main controller, when exchanging data with a gas sale management system of a gas company through the IC card information exchange module, the IC card intelligent gas meter terminal main controller performs identity authentication; therefore, the legality of communication between the IC card intelligent gas meter terminal main controller and the IC card information exchange module is guaranteed; moreover, the IC card intelligent gas meter terminal main controller is accessed to a gas management system in a seamless way through the external data interface, so that the dispersed manufacturing and the uniform management of the IC card intelligent gas meter are realized; and meanwhile, the control independence of the gas company on the gas meter is guaranteed, and the restriction by the outside is avoided.
Description
Technical field
The present invention relates to a kind of IC-card intelligent gas meter, in particular, the present invention relates generally to a kind of IC-card intelligent gas meter with information security management function.
Background technology
At present, each gas company all uses the IC-card intelligent gas meter mostly and sells the gas management system and carry out service management, gas company by IC-card as medium, realize pre-payment and related management, yet because the off-line data characteristic of IC-card, make table hold and sell the gas management system and the data disunity often occurs, the safety of data transmission management does not ensure, may cause password to be decrypted when serious, can realize breaking away from gas company technically sells the gas management system and sells gas, bring loss to gas company, gas company exists IC-card intelligent gas meter risk out of control.
Be the IC-card intelligent gas meter of transmission medium with the IC-card and selling in the gas management system, if the IC-card intelligent gas meter does not possess the information security management function, data can not get validity check, may cause IC-card intelligent gas meter, IC-card, sell the three's of gas management system information inconsistency, for example, load value data makes a mistake, and brings loss can for user or gas company.Do not possess at the IC-card intelligent gas meter under the situation of information security management function, the encryption of data, deciphering can not get ensureing, because IC-card belongs to the data transmission media of off-line, the disabled user can obtain easily, and by the corresponding techniques means, the data of obtaining in the IC-card are analyzed, decode cryptographic algorithm and data protocol, thereby write out the program that corresponding cooperation IC-card intelligent gas meter uses, the management system that breaks away from gas company is used gas arbitrarily, causes gas company to suffer economic loss.
On the other hand, the management system that the IC-card intelligent gas meter of different brands needs, operating equipment, transmission medium, the management password, modes of operation etc. are all inequality, if IC-card intelligent gas meter inside does not have the information security management function, the interface and the program of exchanges data carried out in not unified and outside, gas company cannot be accomplished unified management, the IC-card intelligent gas meter can break away from the management system of gas company, information is revised arbitrarily, the user mode Be Controlled, certain specific user or a plurality of user need not be paid just can use combustion gas, gas company exists IC-card intelligent gas meter and management system risk simultaneously out of control.Therefore be necessary at the problems referred to above, existing IC-card intelligent gas meter is done further improvement, realize information security management.
Summary of the invention
One of purpose of the present invention is to solve above-mentioned deficiency, a kind of IC-card intelligent gas meter with information security management function is provided, solve the problem that the information security management of IC-card intelligent gas meter in the prior art and management system thereof can not get guaranteeing with expectation, eliminate the risk of information security management in the gas company operation.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of IC-card intelligent gas meter provided by the present invention with information security management function, comprise IC-card intelligent gas meter terminal master controller and FLASH memory in the described IC-card intelligent gas meter, described IC-card intelligent gas meter terminal master controller inserts the IC-card information exchange module by external data interface; Described external data interface is used to carry out IC-card intelligent gas meter terminal master controller communicates by letter with the unique data between the IC-card information exchange module, transmits it to IC-card intelligent gas meter terminal master controller when receiving the external data that comes from the IC-card information exchange module; Described FLASH memory is used for storing control and the documentor that the IC-card intelligent gas meter calls for IC-card intelligent gas meter terminal master controller; Described IC-card intelligent gas meter terminal master controller is used for when receiving the external data that comes from external data interface, the gas management system that sells that writes external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, when judged result when being legal, then carry out the operation of corresponding table end according to the affairs that comprise in the packet, otherwise then by the reset circuit initial condition that resets.
As preferably, further technical scheme is: described IC-card intelligent gas meter terminal master controller also is used for when to authenticate the identity of selling the gas management system be legal, decrypted data packet and the integrality of data is carried out verification then by the data check module, otherwise then by the reset circuit initial condition that resets; After data integrity verifying passes through, the validity of data is verified by the data check module, otherwise then by the reset circuit initial condition that resets; After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and generate return information at the preliminary treatment result, described return information is encrypted the back return to the IC-card information exchange module by external data interface, after the effective affirmation that obtains the IC-card information exchange module, then the preliminary treatment result is approved and stored relevant operation information, and carried out operation accordingly among the preliminary treatment result; Otherwise then abandon the preliminary treatment result or make caching process.
Further technical scheme is: described FLASH memory Nei Yu Ge protocols having restrictive condition and a plurality of different cipher key procedures, be used at the IC-card intelligent gas meter respectively when the different gas management system that sells carries out exchanges data, IC-card intelligent gas meter terminal master controller is compared with a plurality of cipher key procedures of pre-Ge in the FLASH memory according to the encryption key of external data, thereby the identity of gas management system is sold in authentication, and after encrypted packets deciphering and completeness check pass through, according to the protocols limit condition,, judge whether the affairs in the data are carried out preliminary treatment in current validity of selling under the gas management system identity by data check module verification data.
Further technical scheme is: also comprise eeprom memory in the described IC-card intelligent gas meter, be used to store the associative operation information of IC-card intelligent gas meter terminal master controller, and IC-card intelligent gas meter terminal master controller is to the preliminary treatment result of affairs in the external data.
Further technical scheme is: described IC-card intelligent gas meter terminal master controller is for carrying out the central processing unit or the single-chip microcomputer of cryptographic algorithm.
Further technical scheme is: described external data interface is at least any one in the middle of USART serial line interface, SPI serial line interface or the I2C serial line interface.
Further technical scheme is: also comprise encrypting module in the described IC-card intelligent gas meter, be used for IC-card intelligent gas meter terminal master controller and the multistage encryption and decryption of selling gas management system data exchange, and auxiliary IC-card intelligent gas meter terminal master controller obtains the data encryption key of selling the gas management system and carries out authentication.
Further technical scheme is: described encrypting module is by the Advanced Encryption Standard in the AES(cryptography, the abbreviation of English Advanced Encryption Standard) or the triple DEAs of 3DES(, mode English Triple Data Encryption Algorithm) is carried out data encrypting and deciphering.
Further technical scheme is: also comprise mechanical Ji Liang Zhuan Ge and signal pre-processing circuit in the described IC-card intelligent gas meter, electromechanical valve is installed among the described mechanical meter amount dress Ge at least changes with dynamoelectric signal and changes dress Ge, and described dynamoelectric signal changes and changes dress Ge by signal pre-processing circuit access IC-card intelligent gas meter terminal master controller; Described electromechanical valve inserts IC-card intelligent gas meter terminal master controller by the electromechanical valve control circuit.
Further technical scheme is: also comprise display circuit, crystal oscillating circuit and program download mouth in the described IC-card intelligent gas meter, described display circuit, crystal oscillating circuit and program are downloaded mouth and are all inserted IC-card intelligent gas meter terminal master controller, wherein: described IC-card intelligent gas meter terminal master controller inserts LCDs by display circuit, is used for the Various types of data information of IC-card intelligent gas meter is presented on LCDs; Described crystal oscillating circuit is used for providing clock signal to IC-card intelligent gas meter terminal main controller; Described program is downloaded mouth and is used for relevant program is downloaded to the FLASH memory, the real-time upgrading cipher key procedures by IC-card intelligent gas meter terminal master controller.
Compared with prior art, one of beneficial effect of the present invention is: by increase the function of information security management in IC-card intelligent gas meter terminal master controller, carry out authentication when making its gas management system that sells carry out exchanges data by IC-card information exchange module and gas company, guaranteed the legitimacy of both communication, the IC-card intelligent gas meter must could communicate with the IC-card information exchange module by external data interface; Utilize different keys can realize the Quan Xian She Ge of gas company differentiated control, and adopt 3DES/AES multi-level encryption mode, make that the fail safe of key is higher, and upgrading key can download cause for gossip by the program on the IC-card intelligent gas meter time, avoid key to leak the risk of being brought; By the data verifying program module of Nei Ge, guarantee that the data of transmission are true, accurate and complete.A kind of IC-card intelligent gas meter with information security management function simultaneously provided by the present invention is simple in structure, by external data interface can be seamless access civil gas management system, realize the dispersion manufacturing of IC-card intelligent gas meter, unified management, range of application is wide, and guaranteed the independence of gas company in gas meter, flow meter control, be not subjected to extraneous restriction.
Description of drawings
Fig. 1 is the information security management structural representation block diagram that is used for illustrating one embodiment of the invention;
Fig. 2 is the structural representation block diagram that is used to illustrate another embodiment of the present invention;
Fig. 3 is the management system block diagram that is used for illustrating the embodiment of the invention.
Embodiment
The present invention is further elaborated below in conjunction with accompanying drawing.
With reference to shown in Figure 1, one embodiment of the present of invention are a kind of IC-card intelligent gas meters with information security management function, need establish Ge in this IC-card intelligent gas meter has IC-card intelligent gas meter terminal master controller and FLASH memory, and IC-card intelligent gas meter terminal master controller inserts the IC-card information exchange module of table end by external data interface;
The said external data-interface is used to carry out IC-card intelligent gas meter terminal master controller communicates by letter with the unique data between the IC-card information exchange module, transmits it to IC-card intelligent gas meter terminal master controller when receiving the external data that comes from the IC-card information exchange module;
Above-mentioned FLASH memory is used for storing control and the documentor that the IC-card intelligent gas meter calls for IC-card intelligent gas meter terminal master controller;
Above-mentioned IC-card intelligent gas meter terminal master controller is used for when receiving the external data that comes from external data interface, the gas management system that sells that writes external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, when judged result when being legal, then deciphering and carry out the operation of corresponding table end according to the affairs that comprise in the packet; Otherwise then by the reset circuit initial condition that resets.
According to above-mentioned technical scheme as can be known, the technical problem that present embodiment solved for by above-mentioned functions IC-card intelligent gas meter terminal master controller, at first carry out authentication and data encrypting and deciphering in advance what itself and external data interface carried out exchanges data, thereby cooperate gas company that the IC-card intelligent gas meter of terminal is managed, to eliminate the risk of information security management in the gas company operation.
With reference to shown in Figure 2, in another embodiment of the present invention, in conjunction with in this area about the known technology of IC-card intelligent gas meter, also should She Ge in above-mentioned IC-card intelligent gas meter machinery Ji Liang Zhuan Ge and signal pre-processing circuit, and mechanical Ji Liang Zhuan Ge is provided with combustion gas input port and combustion gas delivery outlet, and its inside is equipped with electromechanical valve at least and dress Ge is changed in the dynamoelectric signal commentaries on classics, and wherein the dynamoelectric signal commentaries on classics is changed dress Ge and inserted IC-card intelligent gas meter terminal master controller by signal pre-processing circuit; Electromechanical valve then inserts IC-card intelligent gas meter terminal master controller by the electromechanical valve control circuit, IC-card intelligent gas meter terminal master controller is by the switch motion of electromechanical valve control circuit control electromechanical valve, promptly constitutes valve control module in the IC-card intelligent gas meter by electromechanical valve and electromechanical valve control circuit.
Again with reference to shown in Figure 1, further, also Ke She Ge display circuit, crystal oscillating circuit and program are downloaded mouth in the above-mentioned IC-card intelligent gas meter, described display circuit, crystal oscillating circuit and program are downloaded mouth and are all inserted above-mentioned IC-card intelligent gas meter terminal master controller, wherein: described IC-card intelligent gas meter terminal master controller inserts LCDs by display circuit, its Various types of data information that act as the IC-card intelligent gas meter presents on LCDs, and the information that is presented for example remains tolerance, switch valve state or the like; Described crystal oscillating circuit is used for providing clock signal to IC-card intelligent gas meter terminal main controller, and VCC and VSS two pins provide working power for the IC-card intelligent gas meter; And acting as of program download mouth is downloaded to relevant program in the FLASH memory by IC-card intelligent gas meter terminal master controller, and the real-time upgrading cipher key procedures is avoided leaking the risk of being brought because of key.
Mention as the foregoing description, the present invention is except the information security management function, come down to a kind of IC-card intelligent gas meter with information security management function, it is to be transmission medium with the IC-card, to sell the gas management system is platform, based on the displacement machine measurement technology,, realize the gas meter, flow meter of related management such as electronics metering, valve control, prepaid by the combination of electronic-metering technology, dynamo-electric switch technology, valve control techniques, data processing technique, combination technique.
Again with reference to shown in Figure 1, be used for the embodiment that the technical solution problem is more preferably in the present invention, provide a kind of above-mentioned IC-card intelligent gas meter terminal master controller to carry out the concrete mode that authentication, data check and affairs are carried out to selling the gas management system, when promptly the identity of selling the gas management system when IC-card intelligent gas meter terminal master controller authentication is legal, decrypted data packet and the integrality of data is carried out verification then by the data check module, otherwise then by the reset circuit initial condition that resets;
After data integrity verifying passes through, by the data check module validity of data is verified again, otherwise then by the reset circuit initial condition that resets;
After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and generate return information at the preliminary treatment result, described return information is encrypted the back return to the IC-card information exchange module by external data interface, after the effective affirmation that obtains the IC-card information exchange module, then the preliminary treatment result is approved and stored relevant operation information, thereby carried out operation accordingly among the preliminary treatment result; Otherwise then abandon the preliminary treatment result or make caching process, be specially IC-card intelligent gas meter terminal master controller and in the predefined time, do not receive the affirmation result of IC-card information exchange module, for example do not receive the affirmation information of IC-card information exchange module in three minutes, initial condition then resets; Aforesaid caching process is meant keeps in the preliminary treatment object command, when IC-card intelligent gas meter terminal master controller is waken up and receives the affirmation information of IC-card information exchange module once more, then carries out operation accordingly among the preliminary treatment result in the same way.
Comprised external data in the present embodiment in the above-mentioned technical scheme and authenticated to affairs the external data by the performed whole flow process of IC-card intelligent gas meter terminal master controller from selling the gas management system identity, Cheng Xu by above-mentioned flow process establishes Ge, has further strengthened the IC-card intelligent gas meter to receiving the fail safe of information and executing.The initial condition and the above-mentioned IC-card intelligent gas meter terminal master controller of repeatedly mentioning resets, be the state of IC-card intelligent gas meter terminal master controller before carrying out above-mentioned any one operation that reset, for example IC-card intelligent gas meter terminal master controller is a resting state receiving the state of external data before carrying out authentication, when receiving that external data is waken up by resting state, but the authentication of selling the gas management system is judged as when illegal, IC-card intelligent gas meter terminal master controller then recovers resting state by reset circuit, do not carry out any operation, the situation of processor reset also substantially as hereinbefore in other step; And reset circuit also can be considered a chip virtual module in the IC-card intelligent gas meter terminal master controller in the present invention; When authentication failed, IC-card intelligent gas meter terminal master controller can be stored operation note, so that follow-up checking.
Mention as above-mentioned, by above-mentioned display circuit and LCDs, and the display driving software of IC-card intelligent gas meter terminal master controller inside constitutes the display module in the IC-card intelligent gas meter jointly, the passive IC-card intelligent gas meter terminal main controller controls that is subjected to of display module shows relevant table client information by LCDs.
In another embodiment of the present invention, for realizing managing by the IC-card intelligent gas meter of different rights to user terminal, need Yu Ge protocols limit condition and a plurality of different cipher key procedures in above-mentioned FLASH memory, and above-mentioned control and documentor can be thought the general name of protocols limit condition and a plurality of different cipher key procedures, it act as at the IC-card intelligent gas meter respectively when the different gas management system that sells carries out exchanges data, IC-card intelligent gas meter terminal master controller is compared with a plurality of cipher key procedures of pre-Ge in the FLASH memory according to the encryption key of external data, thereby the identity of gas management system is sold in authentication, and after encrypted packets deciphering and completeness check pass through, according to the protocols limit condition,, judge whether the affairs in the data are carried out preliminary treatment in current validity of selling under the gas management system identity by data check module verification data.
According to another embodiment of the present invention, mention as above-mentioned, buffer memory for ease of IC-card intelligent gas meter terminal master controller preliminary treatment result, in the IC-card intelligent gas meter, go back the relatively independent eeprom memory of Ke She Ge, be used to store the associative operation information of IC-card intelligent gas meter terminal master controller, and IC-card intelligent gas meter terminal master controller is to the preliminary treatment result of affairs in the external data.And in the FLASH memory, also establish Ge other program that can be utilized by IC-card intelligent gas meter terminal master controller is arranged, after for example making the associative operation information of IC-card intelligent gas meter terminal master controller in a single day be stored in the eeprom memory, can not be deleted with revise so that make the running status of IC-card intelligent gas meter stay complete record.
On the other hand, FLASH memory of being mentioned in the present embodiment and eeprom memory can be independent of IC-card intelligent gas meter terminal master controller, also can directly be integrated in the IC-card intelligent gas meter terminal master controller, establish Ge by concrete chip division and play above-mentioned memory function.
With reference to shown in Figure 1, the above-mentioned IC-card intelligent gas meter terminal master controller of having mentioned can carry out encryption and decryption to the data from the IC-card information exchange module, in another embodiment of the present invention, direct Dan Dushe Ge encrypting module in the IC-card intelligent gas meter also, this encrypting module can be independently, form that also can software program is stored in the FLASH memory, it act as IC-card intelligent gas meter terminal master controller and the exchanges data of selling the gas management system is carried out multistage encryption and decryption, and auxiliary IC-card intelligent gas meter terminal master controller obtains the data encryption key of selling the gas management system and carries out authentication from external data.With reference to the higher cipher mode of fail safe in the prior art, the preferred Advanced Encryption Standard that adopts in the AES(cryptography, the abbreviation of English Advanced Encryption Standard) or the triple DEAs of 3DES(, English Triple Data Encryption Algorithm) to carrying out encryption and decryption by the data of coming and going in the external data interface.
According to the form that above-mentioned encrypting module exists in the IC-card intelligent gas meter, the data check module in the above embodiment of the present invention also is identical situation, and promptly it can be independently, and form that also can software program is stored in the FLASH memory.
Further, in another embodiment of the present invention, above-mentioned IC-card intelligent gas meter terminal master controller is the core of entire I C card intelligent gas meter, realize the control of being correlated with, function such as carry out, reset with this, carry out relevant program command, coordinate between each functional module in order, work efficiently.For IC-card intelligent gas meter terminal master controller itself, can directly adopt single-chip microcomputer or the central processing unit that to carry out cryptographic algorithm in the prior art or have ready-made cryptographic algorithm.
Simultaneously, the external data interface of IC-card intelligent gas meter terminal master controller preferably is complementary with conventional external data transfer interface in the foregoing description, serial line interfaces such as USART interface, SPI interface or I2C interface for example are to increase the compatibility of IC-card intelligent gas meter terminal master controller and IC-card information exchange module.
Have in the foregoing description in the IC-card intelligent gas meter practical application of information security management function, be as good as with existing IC-card intelligent gas meter.As Fig. 1, illustrated in fig. 2, IC-card intelligent gas meter terminal master controller is finished the information exchange with the IC-card information exchange module according to the operational order of external data.IC-card intelligent gas meter terminal master controller is realized the electromechanical valve switch motion by the electromechanical valve control circuit, display circuit is with the electromechanical valve state, supplement tolerance with money, residue tolerance or the like information presents on LCDs, dynamoelectric signal Zhuan Huan Zhuan Ge is the signal of telecommunication with the mechanical count conversion of signals, transfer in the IC-card intelligent gas meter terminal master controller by signal pre-processing circuit, IC-card intelligent gas meter terminal master controller is made difference with tolerance value in the memory and the gas consumption value that receives by counting module and is calculated, and the tolerance remaining sum presented in LCDs, when the remaining sum of supplementing with money in the subscriber's meter is used up, IC-card intelligent gas meter terminal master controller is controlled electromechanical valve among the mechanical meter amount dress Ge by the electromechanical valve control circuit, make its shutoff, and then stop air feed, treat to open again after the user successfully supplements with money.
With reference to shown in Figure 3, after use has the IC-card intelligent gas meter of information security management function, all outside communication datas of IC-card intelligent gas meter are all undertaken by external data interface, handle after by IC-card intelligent gas meter terminal master controller by the encrypting module encryption and decryption, and IC-card intelligent gas meter terminal master controller is unique with outside interface and the internal processes that carries out exchanges data, therefore selling the gas management system can be considered as terminal with IC-card intelligent gas meter terminal master controller, in order to management IC-card intelligent gas meter, promptly sell the gas management system compatible various brands with one, the IC-card intelligent gas meter of type is managed concentratedly, effectively reduces gas company to different brands in the zone, the difficulty of type gas meter, flow meter integration management.
Except that above-mentioned, " embodiment ", " embodiment " who also need to prove in this manual to be spoken of, " embodiment " etc. refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and are included among at least one embodiment that the application's generality describes.To go out statement of the same race be not necessarily to refer to same embodiment in a plurality of places in specification.Furthermore, when describing a concrete feature, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here,,
This is understood, and those skilled in the art can design a lot of other modification and execution modes, and these are revised execution modes and will drop within the disclosed principle scope and spirit of the application.More particularly, open in the application, in the scope of accompanying drawing and claim, can advance multiple modification and improvement the building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, for the ability technical staff, other purposes also will be tangible.
Claims (10)
1. IC intelligent gas meter with information security management function, it is characterized in that: comprise IC intelligent gas meter terminal master controller and FLASH memory in the described IC intelligent gas meter, described IC intelligent gas meter terminal master controller inserts the IC-card information exchange module by external data interface;
Described external data interface is used to carry out IC intelligent gas meter terminal master controller communicates by letter with the unique data between the IC-card information exchange module, transmits it to IC intelligent gas meter terminal master controller when receiving the external data that comes from the IC-card information exchange module;
Described FLASH memory is used for storing control and the documentor that the IC intelligent gas meter calls for IC intelligent gas meter terminal master controller;
Described IC intelligent gas meter terminal master controller is used for when receiving the external data that comes from external data interface, the gas management system that sells that writes external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, when judged result when being legal, then deciphering and carry out the operation of corresponding table end according to the affairs that comprise in the packet, otherwise then by the reset circuit initial condition that resets.
2. the IC intelligent gas meter with information security management function according to claim 1, it is characterized in that: when the identity that described IC intelligent gas meter terminal master controller also is used for selling the gas management system when authentication is legal, decrypted data packet and the integrality of data is carried out verification then by the data check module, otherwise then by the reset circuit initial condition that resets;
After data integrity verifying passes through, the validity of data is verified by the data check module, otherwise then by the reset circuit initial condition that resets;
After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and generate return information at the preliminary treatment result, described return information is encrypted the back return to the IC-card information exchange module by external data interface, after the effective affirmation that obtains the IC-card information exchange module, then the preliminary treatment result is approved and stored relevant operation information, and carried out operation accordingly among the preliminary treatment result; Otherwise then abandon the preliminary treatment result or make caching process.
3. the IC intelligent gas meter with information security management function according to claim 1 and 2, it is characterized in that: preset protocols limit condition and a plurality of different cipher key procedures in the described FLASH memory, be used at the IC intelligent gas meter respectively when the different gas management system that sells carries out exchanges data, IC intelligent gas meter terminal master controller is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and the FLASH memory, thereby the identity of gas management system is sold in authentication, and after encrypted packets deciphering and completeness check pass through, according to the protocols limit condition,, judge whether the affairs in the data are carried out preliminary treatment in current validity of selling under the gas management system identity by data check module verification data.
4. the IC intelligent gas meter with information security management function according to claim 1 and 2, it is characterized in that: also comprise eeprom memory in the described IC intelligent gas meter, be used to store the associative operation information of IC intelligent gas meter terminal master controller, and IC intelligent gas meter terminal master controller is to the preliminary treatment result of affairs in the external data.
5. the IC intelligent gas meter with information security management function according to claim 1 and 2 is characterized in that: described IC intelligent gas meter terminal master controller is for carrying out the central processing unit or the single-chip microcomputer of cryptographic algorithm.
6. the IC intelligent gas meter with information security management function according to claim 1 and 2 is characterized in that: described external data interface is at least any one in the middle of USART serial line interface, SPI serial line interface or the I2C serial line interface.
7. the IC intelligent gas meter with information security management function according to claim 1 and 2, it is characterized in that: also comprise encrypting module in the described IC intelligent gas meter, be used for IC intelligent gas meter terminal master controller and the exchanges data of selling the gas management system are carried out multistage encryption and decryption, and auxiliary IC intelligent gas meter terminal master controller obtains the data encryption key of selling the gas management system and carries out authentication from external data.
8. the IC intelligent gas meter with information security management function according to claim 7 is characterized in that: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
9. the IC intelligent gas meter with information security management function according to claim 1, it is characterized in that: also comprise mechanical metering device and signal pre-processing circuit in the described IC intelligent gas meter, electromechanical valve and dynamoelectric signal conversion equipment are installed in the described mechanical metering device at least, and described dynamoelectric signal conversion equipment inserts IC intelligent gas meter terminal master controller by signal pre-processing circuit; Described electromechanical valve inserts IC intelligent gas meter terminal master controller by the electromechanical valve control circuit.
10. according to claim 1 or 9 described IC intelligent gas meters with information security management function, it is characterized in that: also comprise display circuit, crystal oscillating circuit and program download mouth in the described IC intelligent gas meter, described display circuit, crystal oscillating circuit and program are downloaded mouth and are all inserted IC intelligent gas meter terminal master controller, wherein: described IC intelligent gas meter terminal master controller inserts LCDs by display circuit, is used for the Various types of data information of IC intelligent gas meter is presented on LCDs; Described crystal oscillating circuit is used for providing clock signal to IC intelligent gas meter terminal main controller; Described program is downloaded mouth and is used for relevant program is downloaded to the FLASH memory, the real-time upgrading cipher key procedures by IC intelligent gas meter terminal master controller.
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| CN106681776A (en) * | 2017-01-13 | 2017-05-17 | 成都中科慧源科技有限公司 | Smart card meter off-line upgrade device and method |
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| CN102496209A (en) * | 2011-11-16 | 2012-06-13 | 成都秦川科技发展有限公司 | Intelligent object network heat meter and management system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106681776A (en) * | 2017-01-13 | 2017-05-17 | 成都中科慧源科技有限公司 | Smart card meter off-line upgrade device and method |
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