CN103312492A - Information security management module of remote-control intelligent heat meter - Google Patents
Information security management module of remote-control intelligent heat meter Download PDFInfo
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- CN103312492A CN103312492A CN201310168247XA CN201310168247A CN103312492A CN 103312492 A CN103312492 A CN 103312492A CN 201310168247X A CN201310168247X A CN 201310168247XA CN 201310168247 A CN201310168247 A CN 201310168247A CN 103312492 A CN103312492 A CN 103312492A
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Abstract
The invention discloses an information security management module of a remote-control intelligent heat meter, which belongs to a management auxiliary device of the remote-control intelligent heat meter. The information security management module comprises a processor, a first data interface, a second data interface and a FLASH memorizer, wherein the processor is respectively accessed to the first data interface, the second data interface and the FLASH memorizer, identity authentication can be carried out when the information security management module is in data exchange with a heat energy selling management system through a data transmission module, the communication legality of the information security management module and the heat energy selling management system is ensured, and a terminal main controller of the remote-control intelligent heat meter can be in communication with the external only through the information security management module; and at the same time, the information security management module disclosed by the invention has a simple structure, can be embedded in remote-control intelligent heat meters in various types and can be compatible with the terminal main controller of the remote-control intelligent heat meter through multiple communication transmission technologies and bus interfaces, a heat supply management system can be in seamless access, dispersed manufacturing and unified management of the remote-control intelligent heat meter can be realized, and the application range is wide.
Description
Technical field
The present invention relates to a kind of remote-control intelligent heat energy table management aid, in particular, the present invention relates generally to a kind of remote-control intelligent heat energy table information security management module.
Background technology
At present, man of a lot of heat energy Watch Factory has begun research and development, has produced remote-control intelligent heat energy table, because the technical development of remote-control intelligent heat energy table is in the primary stage, in wire transmission technology, Radio Transmission Technology, sell the security guarantee of heat management system etc. aspect is that all right ripe, imperfection, and remote-control intelligent heat energy table needs main website real-time, safe and effective and Thermoenergy Corp. to sell heat management system to carry out exchanges data on the other hand, so remote-control intelligent heat energy table and sell heat management system and all have risk out of control.
The wire communication mode, the main modes such as Optical Fiber Transmission, data wire transmission and power line transmission that adopt, these transmission meanss all need the cable of complicated layout, these wirings can become quite difficult in special geographical environment, when cable go wrong or by people's reconfiguration after, safety of data transmission can not get guaranteeing.Communication, main RF module, Zigbee module, WiFi module and the bluetooth modules etc. of adopting transmit, these wireless devices are subjected to environmental interference easily in transmission course, cause the exchanges data mistake, when artificial destruction occurring, data may be intercepted and captured, be revised, and safety of data transmission can not get guaranteeing.The heat management system of selling of Thermoenergy Corp. still is in the junior stage in addition, and comprise a plurality of subsystems, a plurality of subsystems all need to carry out exchanges data with main system, these subsystems tend to occur data transmission fault, cause remote-control intelligent heat energy table and the safety of data transmission of selling heat management system to can not get guaranteeing.
Under the situation that the above-mentioned data transmission security of appearance can not get guaranteeing, when in remote-control intelligent heat energy meter terminal master controller, not having active data checking means, the identity of external data transmitting terminal can not get examining, data can not get effective verification, it is out of control to cause remote-control intelligent heat energy table and main website to sell heat management system, therefore be necessary in remote-control intelligent heat energy table, to install additional a kind of servicing unit of information security management, realize information security management.
Summary of the invention
One of purpose of the present invention is at above-mentioned deficiency, a kind of remote-control intelligent heat energy table information security management module is provided, information security management with various types of remote-control intelligent heat energy tables and management system thereof in the expectation solution prior art can not get technical problems such as assurance, thereby eliminates the risk of information security management in Thermoenergy Corp.'s operation.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of remote-control intelligent heat energy table information security management module provided by the present invention, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
Described first data-interface is used for carrying out remote-control intelligent heat energy table communicates by letter with the unique data of data transmission module, and transmits it to processor when receiving the external data that comes from data transmission module; Described data transmission module directly receives and comes from the external data that long-range heat energy is sold management system;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described second data-interface is used for carrying out the data communication between processor and the remote-control intelligent heat energy meter terminal master controller, and described remote-control intelligent heat energy meter 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 first data-interface, the heat energy that sends external data is sold management system carry out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by second data-interface to remote-control intelligent heat energy meter terminal master controller according to the affairs that comprise in the data.
As preferably, further technical scheme is: described processor is used for when receiving the external data that comes from first data-interface, according to external data heat energy is sold management system and carry out authentication, when authentication result is judged as when legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and from remote-control intelligent heat energy meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of remote-control intelligent heat energy meter terminal master controller; Otherwise then 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 the described FLASH memory, be used in the information security management module respectively when subsystem that heat energy is sold the different classifications of management system 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 the FLASH memory, thereby authentication heat energy is sold the identity of management system, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
Described first data-interface also inserts the IC information exchange module, be used for transmitting it to when receiving the external data that comes from the IC information exchange module processor, 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 the described information security management module, described eeprom memory also inserts processor, be used for storage of processor to the associative operation information of remote-control intelligent heat energy meter terminal master controller, and processor is to the preliminary treatment result of affairs in the 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 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, infrared module interface or Optical Fiber Transmission interface, data wire coffret, the power line transmission interface; Described bus interface is at least any one in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface.
Further technical scheme is: described second 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: described information security management module also comprises encrypting module, described encrypting module inserts processor, be used for information security management module and heat energy are sold the multistage encryption and decryption of management system, remote-control intelligent heat energy meter terminal master controller exchanges data, and auxiliary processor obtains heat energy and sells the data encryption key of management system and carry 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.
Compared with prior art, one of beneficial effect of the present invention is: the information security management module is carried out authentication selling by data transmission module and heat energy when management system is carried out exchanges data, guaranteed the legitimacy of both communication, remote-control intelligent heat energy meter terminal master controller must could communicate with the outside by the information security management module; Utilize different keys can realize the authority setting of Thermoenergy Corp.'s 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 information security management module time, avoid key to leak the risk of bringing; By built-in data verifying program, guarantee that the data of transmission are true, accurate, complete.A kind of remote-control intelligent heat energy table information security management modular structure provided by the present invention is simple simultaneously, can embed in various types of remote-control intelligent heat energy tables, by multiple communication transmission technology and the compatible remote-control intelligent heat energy of bus interface meter terminal master controller, there is no and sew up into heat supplying managing system, realize that remote-control intelligent heat energy table disperses to make, unified management, range of application is wide, and guarantee the independence of Thermoenergy Corp. in the control of heat energy table, 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 invention;
Fig. 2 is for being used for the information security management module application block diagram of the explanation embodiment of the invention;
Fig. 3 is for being used for the management system block diagram of the explanation 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 remote-control intelligent heat energy table information security management modules, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
The effect of above-mentioned first data-interface is to carry out remote-control intelligent heat energy table to communicate by letter with the unique data of data transmission module, and transmits it to processor when receiving the external data that comes from data transmission module; Described data transmission module directly receives and comes from the external data that long-range heat energy is sold management system;
The effect of above-mentioned FLASH memory is control and the documentor in the storage information security management module;
With reference to shown in Figure 1, the effect of above-mentioned second data-interface is the data communication of carrying out between processor and the remote-control intelligent heat energy meter terminal master controller, and the effect of remote-control intelligent heat energy meter 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 first data-interface, the heat energy that sends external data is sold management system carry out authentication, judge whether to obtain encrypted packets in this external data, and send corresponding operational order by second data-interface to remote-control intelligent heat energy meter terminal master controller according to the affairs that comprise in the data.
According to above-mentioned technical scheme as can be known, the technical problem that present embodiment solves is the information security management module by above-mentioned composition structure, sell at remote-control intelligent heat energy meter terminal master controller and heat energy and to carry out data between the management system and transmit, and when transmitting, authenticated and encryption and decryption, thereby cooperate Thermoenergy Corp. that the intellectual heat meter of terminal is managed, to eliminate the risk of information security management in Thermoenergy Corp.'s operation.
And the information security management module of the Oscillator module shown in Fig. 1 and pin XIN, XOUT provides clock signal; 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 the pin of remote-control intelligent heat energy meter terminal master controller.
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 processor heat energy to be sold the concrete mode of management system authentication and affairs execution, namely when processor receives the external data that comes from first data-interface, according to external data heat energy is sold management system and carry out authentication, when authentication result is judged as when legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and from remote-control intelligent heat energy meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of remote-control intelligent heat energy meter terminal master controller; Otherwise then abandon the preliminary treatment result or make caching process, namely do not receive the affirmation result of data transmission module in the predefined time, for example do not receive the affirmation information of data transmission module in three minutes, initial condition then resets; Aforesaid caching process refers to the preliminary treatment object command is kept in, and when processor is waken up and receives the affirmation information of data transmission module again, then instructs to the transmit operation of remote-control intelligent heat energy meter terminal master controller in the same way.
Also comprise external data in the present embodiment in the above-mentioned technical scheme and sold the affairs of management system authentication to the external data by the performed whole flow process of processor from heat energy, by the program setting 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 that heat energy is sold management system is judged as when illegal, processor then recovers resting state, do not carry out any operation, the situation of processor reset also substantially as hereinbefore in other step, when authentication failed, processor can be stored operation note.
And it is same, in another embodiment of the present invention, for realizing the information security management module being managed by different rights, need in above-mentioned FLASH memory, to preset protocols limit condition and a plurality of different cipher key procedures, it act as in the information security management module respectively when subsystem that heat energy is sold different classifications in the management system 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 the FLASH memory, thereby authentication heat energy is sold the identity of management system, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
With reference to shown in Figure 2, for satisfying at present the internal structure of remote-control intelligent heat energy table mostly, above-mentioned first data-interface also inserts the IC information exchange module, be used for transmitting it to when receiving the external data that comes from the IC information exchange module processor, 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, in the information security management module, also relatively independent eeprom memory can be set, and eeprom memory also inserted processor, be used for storage of processor to the associative operation information of remote-control intelligent heat energy meter terminal master controller, processor is to the preliminary treatment result of affairs in the external data, and the failure record of processor checking, and in the FLASH memory, also be provided with other program that to be utilized by processor, after in a single day be processor be stored in the eeprom memory to the associative operation information of remote-control intelligent heat energy meter 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, remote-control intelligent heat energy table information security management module in above-described embodiment in actual applications, insert between remote-control intelligent heat energy meter terminal master controller and the data transmission module, and the internal structure of heat energy table and existing remote-control intelligent heat energy table are as good as, remote-control intelligent heat energy table itself contains multiple functional module, as the flow measurement module, memory module, display module, the flow valve module, the surplus reminding module, the medium temperature measurement module, these modules are by being connected with remote-control intelligent heat energy meter terminal master controller, finish the correlation function of remote-control intelligent heat energy table, as the flow measurement module heat energy that the user uses is measured, the demonstration that display module will advance with heat and after-heat and relevant information, the data message that memory module stores is relevant, the flow valve module is responsible for the switch valve operation, and the medium temperature measurement module is responsible for measuring the temperature value of input and output medium.
And according to above-mentioned principle, this remote-control intelligent heat energy information security management module is can be directly integrated to be applied in the conventional remote-control intelligent heat energy table, sells management system by data transmission module with wireless or wired mode and long-range heat energy and carries out exchanges data; And in addition, the improvement of going back adaptability is applied to other carries out telemanagement by electronic information metering device.
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 the prior art, for example EFM32 etc.
Based on data communication mode required in above-described embodiment, the inventor is with reference to prior art, selected for use the transmission technology of part in the prior art to realize communicating by letter between processor and the interface, wherein data transmission module can adopt network communication module or bus communication module, and corresponding with aforesaid data transmission module, be used for carrying out unique first data-interface of communicating by letter with data transmission module in above-described embodiment and can adopt network communication interface or bus interface.
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, infrared module interface and the bluetooth module interface, and wired network interface can adopt one or more in the middle of Optical Fiber Transmission interface, data wire coffret and the power line transmission interface; Above-mentioned bus interface be in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface one or more.
And it is corresponding, second data-interface that processor and remote-control intelligent heat energy meter terminal master controller communicate in above-described embodiment preferably is complementary with conventional master controller, serial line interfaces such as USART interface, SPI interface or I2C interface for example are integrated in compatibility on the intellectual heat meter to increase the information security management module.
Again with reference to shown in Figure 1, fail safe for data encryption and deciphering in the administration module that further ensures information security, be preferably in its inside independently encrypting module is set, and with this independently encrypting module insert processor, be used for information security management module and heat energy are sold management system, the multistage encryption and decryption of remote-control intelligent heat energy meter terminal master controller exchanges data, and auxiliary processor obtains heat energy and sells the data encryption key of management system and carry out authentication, and 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) 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 remote-control intelligent heat energy table that a plurality of different vendors produce, outside all communication datas of heat energy table are all by transmitting after the information security management module encryption and decryption, and the internal processes of information security management module is unique, therefore heat energy is sold management system and the information security management module can be considered as terminal, in order to manage intellectual heat meter, namely sell the compatible various brands of management system with a heat energy, the intellectual heat meter of type is managed concentratedly, effectively reduces Thermoenergy Corp. to different brands in the zone, the difficulty of the intellectual heat meter integration management of type.As shown in Figure 3, the communication path that remote-control intelligent heat energy table and heat energy are sold management system is: the table end passes through the upper strata multistage communication device, as collector, and repeater, concentrators etc. directly arrive heat energy and sell management system.By above-mentioned path, table is held directly and heat energy is sold management system realization transfer of data.
Except above-mentioned, also need to prove " embodiment ", " another embodiment " that speak of in this manual, " embodiment " etc., refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and be included among 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 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, but, should be appreciated that those skilled in the art can design a lot of other modification and execution modes, these are revised and execution mode will drop within 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 also will be tangible.
Claims (10)
1. remote-control intelligent heat energy table information security management module, it is characterized in that: described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
Described first data-interface is used for carrying out remote-control intelligent heat energy table communicates by letter with the unique data of data transmission module, and transmits it to processor when receiving the external data that comes from data transmission module; Described data transmission module directly receives and comes from the external data that long-range heat energy is sold management system;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described second data-interface is used for carrying out the data communication between processor and the remote-control intelligent heat energy meter terminal master controller, and described remote-control intelligent heat energy meter 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 first data-interface, the heat energy that sends external data is sold management system carry out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by second data-interface to remote-control intelligent heat energy meter terminal master controller according to the affairs that comprise in the data.
2. remote-control intelligent heat energy table 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 first data-interface, according to external data heat energy is sold management system and carry out authentication, when authentication result is judged as when legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, the affairs that comprise in the data are carried out preliminary treatment, and from remote-control intelligent heat energy meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of remote-control intelligent heat energy meter terminal master controller; Otherwise then abandon the preliminary treatment result or make caching process.
3. remote-control intelligent heat energy table 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 the described FLASH memory, be used in the information security management module respectively when subsystem that heat energy is sold the different classifications of management system 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 the FLASH memory, thereby authentication heat energy is sold the identity of management system, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
Described first data-interface also inserts the IC information exchange module, be used for transmitting it to when receiving the external data that comes from the IC information exchange module processor, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
4. remote-control intelligent heat energy table information security management module according to claim 1 and 2, it is characterized in that: also comprise eeprom memory in the described information security management module, described eeprom memory also inserts processor, be used for storage of processor to the associative operation information of remote-control intelligent heat energy meter terminal master controller, and processor is to the preliminary treatment result of affairs in the external data.
5. remote-control intelligent heat energy table 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. remote-control intelligent heat energy table information security management module according to claim 1 and 2, it is characterized in that: described first data-interface is network communication interface or bus interface.
7. remote-control intelligent heat energy table 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, infrared module interface or Optical Fiber Transmission interface, data wire coffret, the power line transmission interface; Described bus interface is at least any one in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface.
8. remote-control intelligent heat energy table information security management module according to claim 1 and 2 is characterized in that: described second 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.
9. remote-control intelligent heat energy table 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 inserts processor, be used for information security management module and heat energy are sold the multistage encryption and decryption of management system, remote-control intelligent heat energy meter terminal master controller exchanges data, and auxiliary processor obtains heat energy and sells the data encryption key of management system and carry out authentication.
10. remote-control intelligent heat energy table 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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| CN103078874A (en) * | 2013-01-31 | 2013-05-01 | 成都秦川科技发展有限公司 | Remote-control intelligent gas meter embedded with information safety management module |
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| US20030110380A1 (en) * | 2001-02-23 | 2003-06-12 | Carolsfeld Rudolf Schnorr Von | Multi-featured power meter with feature key |
| 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 |
| CN102496259A (en) * | 2011-11-16 | 2012-06-13 | 成都秦川科技发展有限公司 | Internet of things based water meter and management system thereof |
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Application publication date: 20130918 |