CN103152176A - Intelligent gas meter information security management module of internet of things - Google Patents

Intelligent gas meter information security management module of internet of things Download PDF

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Publication number
CN103152176A
CN103152176A CN2013100390243A CN201310039024A CN103152176A CN 103152176 A CN103152176 A CN 103152176A CN 2013100390243 A CN2013100390243 A CN 2013100390243A CN 201310039024 A CN201310039024 A CN 201310039024A CN 103152176 A CN103152176 A CN 103152176A
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data
internet
things
interface
gas meter
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CN103152176B (en
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邵泽华
吴岳飞
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Chengdu Qinchuan IoT Technology Co Ltd
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Chengdu Qinchuan Technology Development Co Ltd
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Abstract

The invention discloses an intelligent gas meter information security management module of the internet of things, and belongs to an intelligent gas meter management auxiliary device of the internet of things. The information security management module comprises a processor, a first data interface, a second data interface and a FLASH memorizer. The processor is respectively accessed to the first data interface, the second data interface and the FLASH memorizer. When data exchange is carried out between the information security management module and a remote control end of the internet of things, identity authentication is carried out, communication legality of the information security management module and the internet of things is guaranteed, and an intelligent gas meter terminal main controller of the internet of things can be communicated with the external through the information security management module. At the same time, the module is simple in structure, can be embedded to various intelligent gas meters of the internet of things, contains the intelligent gas meter terminal main controller of the internet of things with a bus interface in a compatible mode through multiple communication transmission techniques, and is accessed to a gas management system in a seamless mode. Therefore, dispersion manufacturing and unified management of intelligent gas meters of the internet of things are achieved, and the applied range is broad.

Description

Intelligent gas meter based on internet of things information security management module
Technical field
The present invention relates to a kind of Intelligent gas meter based on internet of things management aid, in particular, the present invention relates generally to a kind of Intelligent gas meter based on internet of things information security management module.
Background technology
Intelligent gas meter based on internet of things need to use telecommunication technique and technology of Internet of things, makes gas meter, flow meter become a terminal equipment, gas meter, flow meter real-time online and the internet exchange message of the Internet.The communication path of Intelligent gas meter based on internet of things and its total management system is: data by the Internet network, arrive the Intelligent gas meter based on internet of things total management system by the upper strata multistage communication device.All have the safety issue of transfer of data due to telecommunication technique and technology of Internet of things, so there is great risk in the information security management of Intelligent gas meter based on internet of things.Use telecommunication equipment, data may make a mistake, and also may suffer artificial modification, cause Intelligent gas meter based on internet of things out of control, and the gas management system of selling that causes the user can break away from natural gas companies arbitrarily uses gas.Use the Internet network, Internet Server is easily under attack, and in the unwitting situation of Intelligent gas meter based on internet of things user, information is read and distorts; The disabled user forges and to copy the Intelligent gas meter based on internet of things equipment identities, assumes another's name to be input to and sells in the gas management system, can Update Table, steal tolerance, and make gas company suffer economic loss.
Intelligent gas meter based on internet of things is sold in the gas management system, there is number of ways can realize Intelligent gas meter based on internet of things and the exchanges data of selling the gas system, grid is complicated, there are uncertain risk factors in each link, if any there is no active data effect means, the fail safe of exchanges data will can not be guaranteed, and the user can steal tolerance by multiple means, make gas company suffer economic loss.
As can be seen from the above, there are too many risk factors in Intelligent gas meter based on internet of things in safety management, these risk factors cause the economic loss of gas company, therefore need a kind of safety management servicing unit, realize the information security management of Intelligent gas meter based on internet of things total management system.
Summary of the invention
One of purpose of the present invention is for above-mentioned deficiency, a kind of Intelligent gas meter based on internet of things information security management module is provided, the problems such as the information security management that solves various types of Intelligent gas meter based on internet of things in prior art and management system thereof with expectation can not be guaranteed, thus the risk of information security management in the gas company operation eliminated.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of Intelligent gas meter based on internet of things information security management module provided by the present invention, described information security management module comprises processor, the first data-interface, the second data-interface and FLASH memory, described processor accesses respectively the first data-interface, the second data-interface and FLASH memory, wherein:
Described the first data-interface be used for to be carried out Intelligent gas meter based on internet of things and is communicated by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described the second data-interface is used for carrying out the data communication between processor and Intelligent gas meter based on internet of things terminal master controller, and described Intelligent gas meter based on internet of things terminal master controller is used for carrying out the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data that comes from the first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by the second data-interface to Intelligent gas meter based on internet of things terminal master controller according to the affairs that comprise in data.
As preferably, further technical scheme is: described processor is used for when receiving the external data that comes from the first data-interface, according to external data, the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when legal, encrypted packets is decrypted and completeness check, on the contrary the initial condition that resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that resets;
After Validation of Data is passed through, the affairs that comprise in data are carried out preliminary treatment, and obtain corresponding return information by the second data-interface from Intelligent gas meter based on internet of things terminal master controller, after being encrypted, described return information returns to data transmission module by the first data-interface, the preliminary treatment result approved after effectively being confirmed and stored relevant operation information, and to Intelligent gas meter based on internet of things terminal master controller transmit operation instruction; Otherwise abandon the preliminary treatment result or make caching process.
further technical scheme is: preset protocols limit condition and a plurality of different cipher key procedures in described FLASH memory, be used in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition Verification data under current identity, judge whether the affairs in data are carried out preliminary treatment,
Described the first data-interface also accesses the IC-card information exchange module, be used for transmitting it to processor when receiving the external data that comes from the IC-card information exchange module, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
Further technical scheme is: also comprise eeprom memory in described information security management module, described eeprom memory also accesses processor, be used for storage of processor to the associative operation information of Intelligent gas meter based on internet of things terminal master controller, and processor is to the preliminary treatment result of affairs in external data.
Further technical scheme is: described processor is for carrying out central processing unit or the single-chip microcomputer of cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
Further technical scheme is: described the first data-interface is network communication interface or bus interface.
Further technical scheme is: described network communication interface is at least any one in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface or Optical Fiber Transmission interface, data wire coffret, power line coffret; Described bus interface is at least any one in the middle of Mbus bus interface, RS485 bus interface, CAN bus interface.
Further technical scheme is: described the second data-interface is at least any one in the middle of USART serial line interface, SP I serial line interface or I2C serial line interface.
Further technical scheme is: described information security management module also comprises encrypting module, described encrypting module access processor, be used for the multistage encryption and decryption to information security management module and Internet of Things remote control terminal, Intelligent gas meter based on internet of things terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication.
Further technical scheme is: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
Compared with prior art, one of beneficial effect of the present invention is: the information security management module is carried out authentication when carrying out exchanges data by data transmission module and Internet of Things remote control terminal, guaranteed the legitimacy of both communication, Intelligent gas meter based on internet of things terminal master controller must could communicate with the outside by the information security management module; Utilize different keys can realize the authority setting of gas company differentiated control, and adopt 3DES/AES multi-level encryption mode, make key safety higher, and upgrading key can download cause for gossip by the program on the information security management module time, the risk of avoiding key exposure to bring; By built-in data verifying program, guarantee that the data of transmission are true, accurate, complete.A kind of Intelligent gas meter based on internet of things information security management modular structure provided by the present invention is simple simultaneously, can embed in various types of Intelligent gas meter based on internet of things, by multiple communication transmission technology and the compatible Intelligent gas meter based on internet of things terminal of bus interface master controller, and seamless access civil gas management system, realize that Intelligent gas meter based on internet of things disperses to make, unified management, range of application is wide, and guarantee the independence of gas company on gas meter, flow meter is controlled, and be not subjected to extraneous restriction.
Description of drawings
Fig. 1 is for being used for the information security management modular structure block diagram of the explanation embodiment of the present invention;
Fig. 2 is for being used for the information security management module application block diagram of the explanation embodiment of the present invention;
Fig. 3 is for being used for the management system block diagram of the explanation embodiment of the present 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 Intelligent gas meter based on internet of things information security management modules, described information security management module comprises processor, the first data-interface, the second data-interface and FLASH memory, described processor accesses respectively the first data-interface, the second data-interface and FLASH memory, wherein:
The effect of above-mentioned the first data-interface is to carry out Intelligent gas meter based on internet of things to communicate by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
The effect of above-mentioned FLASH memory is control and the documentor in storage information security management module;
With reference to shown in Figure 2, the effect of above-mentioned the second data-interface is the data communication of carrying out between processor and Intelligent gas meter based on internet of things terminal master controller, and the effect of Intelligent gas meter based on internet of things terminal master controller is to carry out the operation of respective table end according to the instruction of processor;
The effect of above-mentioned processor is when receiving the external data that comes from the first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain encrypted packets in this external data, and send corresponding operational order by the second data-interface to Intelligent gas meter based on internet of things terminal master controller according to the affairs that comprise in data.
According to above-mentioned technical scheme as can be known, the technical problem that the present embodiment solves is the information security management module by above-mentioned composition structure, carry out data retransmission between Multi-stage transmission transfer device in Intelligent gas meter based on internet of things terminal master controller and Internet of Things, Internet of Things remote control terminal, and authenticated and encryption and decryption when forwarding, thereby coordinate gas company that the intelligent gas meter of terminal is managed, to eliminate the risk of information security management in the gas company operation.
And the Oscillator module shown in Fig. 1 and pin XIN, XOUT provide clock signal to the information security management module; The RAM memory is used for the operating ephemeral data of memory module; VCC and VSS two pins provide working power for the information security management module, and this power supply should be continued power and can not being provided by Intelligent gas meter based on internet of things terminal master controller pin.
Again with reference to shown in Figure 1, be used in the present invention the embodiment that the technical solution problem is more preferably, the concrete mode of a kind of above-mentioned processor to the authentication of Internet of Things remote control terminal and affairs execution is provided, namely when processor receives the external data that comes from the first data-interface, according to external data, the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when legal, encrypted packets is decrypted and completeness check, on the contrary the initial condition that resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that resets;
After Validation of Data is passed through, the affairs that comprise in data are carried out preliminary treatment, and obtain corresponding return information by the second data-interface from Intelligent gas meter based on internet of things terminal master controller, after being encrypted, described return information returns to data transmission module by the first data-interface, the preliminary treatment result approved after effectively being confirmed and stored relevant operation information, and to Intelligent gas meter based on internet of things terminal master controller transmit operation instruction; Otherwise abandon the preliminary treatment result or make caching process, namely do not receive the confirmation result of data transmission module within the predefined time, for example do not receive the confirmation information of data transmission module in three minutes, initial condition resets; Aforesaid caching process refers to the preliminary treatment object command is kept in, when processor is waken up and receives the confirmation information of data transmission module again, in the same way to Intelligent gas meter based on internet of things terminal master controller transmit operation instruction.
The affairs of the present embodiment peripheral data from the authentication of Internet of Things remote control terminal to external data have also been comprised in above-mentioned technical scheme by the performed whole flow process of processor, by the programming of above-mentioned flow process, further strengthened in the information security management module receiving the fail safe of information and executing.And the above-mentioned processor reset initial condition of repeatedly mentioning, be the state of resetting processor before carrying out above-mentioned any one operation, for example to carry out the state of authentication before receiving external data be resting state to processor, when receiving that external data is waken up by resting state, but the authentication of Internet of Things remote control terminal is judged as when illegal, processor recovers resting state, do not carry out any operation, in other step, the situation of processor reset also substantially as hereinbefore, when authentication failed, processor can be stored operation note.Simultaneously the above-mentioned Internet of Things remote control terminal of mentioning is various communication object in Internet of Things, and different communication objects finally is connected to the gas management system of selling.
and it is same, in another embodiment of the present invention, for realizing by different rights, the information security management module being managed, need to preset protocols limit condition and a plurality of different cipher key procedures in above-mentioned FLASH memory, it act as in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition Verification data under current identity, judge whether the affairs in data are carried out preliminary treatment,
With reference to shown in Figure 2, for satisfying at present the inner structure of Internet of Things gas meter, flow meter mostly, above-mentioned the first data-interface also accesses the IC-card information exchange module, be used for transmitting it to processor when receiving the external data that comes from the IC-card information exchange module, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
according to another embodiment of the present invention, mention as above-mentioned, buffer memory for ease of processor preliminary treatment result, also relatively independent eeprom memory can be set in the information security management module, and eeprom memory is also accessed processor, be used for storage of processor to the associative operation information of Intelligent gas meter based on internet of things terminal master controller, the preliminary treatment result of processor to affairs in external data, and the failure record of processor checking, and also be provided with other program that to be utilized by processor in the FLASH memory, after in a single day be processor be stored in eeprom memory to the associative operation information of Intelligent gas meter based on internet of things terminal master controller, with unsuppressible-suppression and modification, in order to make the running status of information security management module stay complete record.
with reference to shown in Figure 2, Intelligent gas meter based on internet of things information security management module in above-described embodiment in actual applications, between access Intelligent gas meter based on internet of things terminal master controller and data transmission module, and the internal structure of gas meter, flow meter and existing Intelligent gas meter based on internet of things are as good as, its master controller is cut-in valve control module respectively, display module and counting module, master controller is according to the operational order control valve control module of information security management module, and will measure accordingly numerical value and show in display module, and according to aforesaid principle, this Intelligent gas meter based on internet of things information security management module is integrated being applied in conventional Intelligent gas meter based on internet of things directly, pass through data acquisition unit, upper strata multistage communication device and the networkings of Internet of Things remote control terminal constituent such as data concentrator, the GradeNDivision data area, and then by carrying out the signal distribution and integrate in the Internet, guarantee the stability of signal transmission in Internet of Things, and in addition, the improvement application of going back adaptability carries out the metering device of telemanagement by electronic information in other.
The processor that above-described embodiment is mentioned is the core of information security management module, be used for carrying out corresponding program and data encryption, in another embodiment of the present invention, above-mentioned processor is for directly adopting central processing unit or the single-chip microcomputer that can carry out cryptographic algorithm in prior art, such as EFM32 etc.
Based on data communication mode required in above-described embodiment, the inventor is with reference to prior art, selected the transmission technology of part in the prior art to realize communicating by letter between processor and interface, but wherein data transmission module Adoption Network communication module or bus communication module, and corresponding with aforesaid data transmission module, but be used in above-described embodiment carrying out unique the first data-interface Adoption Network communication interface or bus interface of communicating by letter with data transmission module.
Further, above-mentioned network communication interface can adopt wireless or wired form, radio network interface can adopt one or more in the middle of RF module interface, Zigbee module interface, WiFi module interface and bluetooth module interface, and wired network interface can adopt one or more in the middle of Optical Fiber Transmission interface, data wire coffret and power line coffret; In the middle of above-mentioned bus interface Mbus bus interface, RS485 bus interface, CAN bus interface one or more.
And it is corresponding, the second data-interface that in above-described embodiment, processor and Intelligent gas meter based on internet of things terminal master controller communicate preferably is complementary with conventional master controller, serial line interfaces such as USART interface, SPI interface or I2C interface is to increase the compatibility on information security management module integration and intelligent gas meter.
again with reference to shown in Figure 1, fail safe for data encryption and solution in the administration module that further ensures information security, be preferably in its inside independently encrypting module is set, and with this encrypting module access processor independently, be used for information security management module and Internet of Things remote control terminal, the multistage encryption and decryption of Intelligent gas meter based on internet of things terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication, and with reference to the higher cipher mode of fail safe in prior art, the preferred Advanced Encryption Standard that adopts in the AES(cryptography, the abbreviation of English Advanced Encrypt ion Standard) or the triple DEAs of 3DES(, English Triple Data Encryption Algorithm) data of coming and going in the information security management module are carried out encryption and decryption.
again with reference to shown in Figure 3, after the integrated above-mentioned information security management module of Intelligent gas meter based on internet of things that a plurality of different vendors produce, outside all communication datas of gas meter, flow meter are all by forwarding after information security management module encryption and decryption, and the internal processes of information security management module is unique, therefore sell the gas management system and the information security management module can be considered as terminal, manage intelligent gas meter by Internet of Things, namely sell the gas management system compatible various brands with one, the intelligent gas meter of type is managed concentratedly, effectively reduce gas company to different brands in the zone, the difficulty of the intelligent gas meter integration management of type.As shown in Figure 3, Intelligent gas meter based on internet of things with the exchanges data path of selling the gas management system is: data are by the upper strata multistage communication device, by Internet network (the Internet), arrive the gas management system of selling.And table end equipment user is by Internet access to netwoks intelligent gas meter total management system.
Except above-mentioned, also need to prove " embodiment ", " another embodiment " that speak of in this manual, " embodiment " etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a specific features, 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, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and within execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.

Claims (10)

1. Intelligent gas meter based on internet of things information security management module, it is characterized in that: described information security management module comprises processor, the first data-interface, the second data-interface and FLASH memory, described processor accesses respectively the first data-interface, the second data-interface and FLASH memory, wherein:
Described the first data-interface be used for to be carried out Intelligent gas meter based on internet of things and is communicated by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described the second data-interface is used for carrying out the data communication between processor and Intelligent gas meter based on internet of things terminal master controller, and described Intelligent gas meter based on internet of things terminal master controller is used for carrying out the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data that comes from the first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by the second data-interface to Intelligent gas meter based on internet of things terminal master controller according to the affairs that comprise in data.
2. Intelligent gas meter based on internet of things information security management module according to claim 1, it is characterized in that: described processor is used for when receiving the external data that comes from the first data-interface, according to external data, the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when legal, encrypted packets is decrypted and completeness check, on the contrary the initial condition that resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that resets;
After Validation of Data is passed through, the affairs that comprise in data are carried out preliminary treatment, and obtain corresponding return information by the second data-interface from Intelligent gas meter based on internet of things terminal master controller, after being encrypted, described return information returns to data transmission module by the first data-interface, the preliminary treatment result approved after effectively being confirmed and stored relevant operation information, and to Intelligent gas meter based on internet of things terminal master controller transmit operation instruction; Otherwise abandon the preliminary treatment result or make caching process.
3. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2, it is characterized in that: preset protocols limit condition and a plurality of different cipher key procedures in described FLASH memory, be used in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition Verification data under current identity, judge whether the affairs in data are carried out preliminary treatment,
Described the first data-interface also accesses the IC-card information exchange module, be used for transmitting it to processor when receiving the external data that comes from the IC-card information exchange module, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
4. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2, it is characterized in that: also comprise eeprom memory in described information security management module, described eeprom memory also accesses processor, be used for storage of processor to the associative operation information of Intelligent gas meter based on internet of things terminal master controller, and processor is to the preliminary treatment result of affairs in external data.
5. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2 is characterized in that: described processor is for carrying out central processing unit or the single-chip microcomputer of cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
6. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2, it is characterized in that: described the first data-interface is network communication interface or bus interface.
7. Intelligent gas meter based on internet of things information security management module according to claim 6 is characterized in that: described network communication interface is at least any one in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface or Optical Fiber Transmission interface, data wire coffret, power line coffret; Described bus interface is at least any one in the middle of Mbus bus interface, RS485 bus interface, CAN bus interface.
8. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2 is characterized in that: described the second data-interface is at least any one in the middle of USART serial line interface, SPI serial line interface or I2C serial line interface.
9. Intelligent gas meter based on internet of things information security management module according to claim 1 and 2, it is characterized in that: described information security management module also comprises encrypting module, described encrypting module access processor, be used for the multistage encryption and decryption to information security management module and Internet of Things remote control terminal, Intelligent gas meter based on internet of things terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication.
10. Intelligent gas meter based on internet of things information security management module according to claim 9, it is characterized in that: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
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CN102592364A (en) * 2011-12-29 2012-07-18 中国电力科学研究院 Encryption and decryption functions based field service terminal and application method thereof
CN203104485U (en) * 2013-01-31 2013-07-31 成都秦川科技发展有限公司 Internet of things intelligent gas meter information security management module

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Publication number Priority date Publication date Assignee Title
US20030110380A1 (en) * 2001-02-23 2003-06-12 Carolsfeld Rudolf Schnorr Von Multi-featured power meter with feature key
CN102063764A (en) * 2011-01-25 2011-05-18 邵泽华 Intelligent gas meter of Internet of things and control system thereof
CN102592364A (en) * 2011-12-29 2012-07-18 中国电力科学研究院 Encryption and decryption functions based field service terminal and application method thereof
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016530605A (en) * 2013-06-28 2016-09-29 クアルコム,インコーポレイテッド Trust heuristic model to reduce control load in IoT resource access network

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