CN110099057A - Internet of Things intelligence instrument with NB communication postposition gateway - Google Patents
Internet of Things intelligence instrument with NB communication postposition gateway Download PDFInfo
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- CN110099057A CN110099057A CN201910364648.XA CN201910364648A CN110099057A CN 110099057 A CN110099057 A CN 110099057A CN 201910364648 A CN201910364648 A CN 201910364648A CN 110099057 A CN110099057 A CN 110099057A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
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- Computer Hardware Design (AREA)
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
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- Selective Calling Equipment (AREA)
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Abstract
The invention belongs to internet of things field, more particularly to a kind of Internet of Things intelligence instrument with NB communication postposition gateway, it includes micro-control unit, sension unit and communication unit, the micro-control unit is electrical connected with communication unit and sension unit respectively, the perception information obtained from sension unit is uploaded to remote control table by communication unit by the micro-control unit, and remote control table will control information and be issued to micro-control unit by communication unit；For the micro-control unit also and for guaranteeing that the accurate postposition gateway of communication data is electrical connected, the micro-control unit and postposition gateway are two-way communication.The application is provided with postposition gateway at the table end of intelligence instrument, and processing of the postposition gateway to upstream data, realization is to the control of web services layer grade and data granularity, the accuracy testing of data；The filtering to networking command is realized in the processing of data.
Description
Technical field
The invention belongs to internet of things field more particularly to a kind of Internet of Things Intelligent Instruments with NB communication postposition gateway
Table.
Background technique
Internet of Things digitizes real world, the information for the dispersion that furthers, the digital information of unite whole object and object.Pass through Internet of Things
Machine, equipment, personnel can be managed concentratedly with central computer, be controlled, household equipment, automobile can also carried out distant
Control and searching position prevent article stolen etc., similar automation control system, while through the data for collecting these minor matters,
Big data can be finally gathered into, comprising redesign road to cut down traffic accidents, city regeneration, hazard prediction and crime prevention and cure,
The great change of epidemic disease control etc. society realizes that object and object are connected.
Existing utility meters only there is simple statistical function to be gradually appeared in recent years due to the rise of Internet of Things mostly
Part can be applied to the intelligence instrument in Internet of Things, if number of patent application is CN201510727138.6, entitled " Internet of Things
Net intelligent gas meter ladder valuation implementation method " patent of invention, above-mentioned patent in gas meter, flow meter be provided with main control module and
The multiple functional modules connecting with main control module signal, module realizes the letter to remote control table to gas meter, flow meter by wireless communication
Number transmission, but the transmission mode of this signal there is great security risk, i.e., gas meter, flow meter not can guarantee from long-range control
Whether the signal that platform issues is accurate, cannot guarantee that whether the parameter to spread out of from intelligence instrument is accurate.
Summary of the invention
In order to solve existing Internet of Things intelligence instrument, there are parameters or order maliciously to be repaired in signals transmission
The problem of changing or forging, a kind of currently proposed Internet of Things intelligence instrument with NB communication postposition gateway.
For achieving the above object, the application's the specific scheme is that
A kind of Internet of Things intelligence instrument with NB communication postposition gateway, includes micro-control unit, sension unit and communication unit
Member, the micro-control unit are electrical connected with communication unit and sension unit respectively, and the micro-control unit will be from sension unit
The perception information of acquisition is uploaded to remote control table by communication unit, and remote control table passes through communication unit for information is controlled
Member is issued to micro-control unit；The micro-control unit also and for guaranteeing that the accurate postposition gateway of communication data is electrical connected,
The micro-control unit and postposition gateway are two-way communication.
The sension unit includes but is not limited to:
Power supply sension unit, traffic aware unit, pressure sension unit, state aware unit, location aware unit, physical damage
Sension unit, equipment fault sension unit, operating unit, power control unit, security control unit, display unit and instruction are single
Member.
Power supply sension unit: for acquiring supply voltage (unit: millivolt), and judge voltage whether there is or not, height, superelevation, mistake
It is low, and output digital data is to micro-control unit.
Traffic aware unit: for acquiring present flow rate (containing flow velocity, flows per unit time: m3/ s), and judge that flow has
Nothing, abnormal small flow, continues small flow etc. at size, and output digital data is to micro-control unit.
Pressure sension unit: for acquiring pressure (unit: Pa), and output digital data is to micro-control unit.
State aware unit: for acquiring intelligence instrument working condition, including sleep state, working condition, receiving and transmitting signal
State, and output digital data is to micro-control unit.
Location aware unit: for acquiring the latitude and longitude coordinates of intelligence instrument, and output digital data is to micro-control unit.
Physical damage sension unit: for acquiring intelligence instrument shell tamper button state, magnetic disturbance state, and number is exported
Digital data is to micro-control unit.
Equipment fault sension unit: for acquiring the malfunction coding of micro-control unit self-test, and output digital data is to micro-
Control unit.
Operating unit: for controlling the controller of intelligence instrument valve, after receiving instruction, electromechanical valve is closed or is beaten
It opens.
Power control unit: for controlling power supply output line road and voltage stabilization value, instruction is received, line powering is turned off
It is adjusted with voltage levels.
Security control unit: for carrying out separate storage to the legal system related data inside intelligence instrument, to downlink wireless
It to the data or order of intelligence instrument, is decrypted, to the data or request of wireless uplink to backstage company, is encrypted.
Display unit: for the liquid crystal display of intelligence instrument, showing the operation data and status information of intelligence instrument, packet
Include accumulative gas consumption (amount of money), aeration quantity (amount of money), remaining tolerance (amount of money), gas price, table number, valve state, magnetic disturbance state,
It is cell voltage, radio-frequency receiving-transmitting state, order miscue, arrearage Recharge Promotion, the low prompt of voltage, alarm of uncapping, outer taking alarm
(gas leakage) etc..
Indicating unit: acousto-optic instruction, when operating intelligence instrument, according to circumstances, buzzer has yowl, short ring, short ring several
Inferior different modes instruction, indicator light have the different modes instructions such as long bright, flashing.
Further, the first scheme are as follows:
It is to be electrical connected that the postposition gateway, which is arranged between communication unit and micro-control unit, and between three, direct phase
Realization two-way communication between the two even.
Specific step is as follows for information flow:
Perception information is uploaded:
1. the perception information of the sension unit of intelligence instrument is transferred to postposition gateway by micro-control unit.
2. postposition gateway after receiving the perception information that micro-control unit is sent, can carry out identity to perception information and recognize
Then card examines whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains
Business datum numerical value accuracy.
Postposition intra-gateway has the header code for requesting instruction and data packet and data field format and check code, does not meet
The header code message of the instruction of coding regulation or data, does not meet the message of data field format, the message of check code mistake all can
It is intercepted, it will not be sent to communication unit, to attack after avoiding micro-control unit firmware program from being tampered using intelligence instrument
Hit remote control table.
3. rubbish or invalid information can be taken as to abandon by the perception information examined, subsequent processing is no longer done；Pass through
The perception information of examination, postposition gateway can carry out communication Protocol Conversion to data, by the safe unit in postposition gateway to sense
Know that information is encrypted, generate MAC check code, addition electronic signature realizes remote control table in perception information
Request and business datum are examined；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to communication unit
Member, to realize the rank of network service and the control of data granularity.
4. the perception information after safe handling can be transferred to communication unit through postposition gateway, pass through antenna by communication unit
Perception information after postposition gateway processes is sent, is received by remote control table, intelligence instrument perception information is completed
Uplink.The remote control table mentioned in the application can be in practice backstage corporate server, such as gas company, electric power
The background server of company, Running-water Company etc..
Control information issues:
1. the Downlink Control Information of remote control table is received the communication unit for being transmitted to intelligence instrument table end by antenna first,
Control information can be transferred to the postposition gateway being electrical connected with communication unit after receiving control information by communication unit.
2. postposition gateway first checks the plaintext area of data, determines if to close after receiving control information
Rule；Unchartered data then directly abandon, and are not for further processing；Application layer is then carried out in accordance with the data of rule in plain text
Signature authentication and decryption, data after decryption can be checked according to the rule that specific instruction carries out ciphertext area, and to plaintext area
Enter mutually confirmation with the data in ciphertext area；The data for not conforming to ciphertext rule then directly abandon, in accordance with ciphertext rule data also
It need to determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, is otherwise then forwarded
Data are to microcontroller；By the processing of postposition gateway, the filtering to business order is realized.
3. the control information after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific
The control information content is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
Further, second scheme are as follows:
The postposition gateway is directly electrically connected with micro-control unit, and the two realizes two-way communication；The communication unit with it is micro-
Control unit is directly electrically connected, and the two realizes two-way communication.Postposition gateway and communication unit are without being directly connected in this scheme
Relationship.
Specific step is as follows for information flow:
Perception information uploads:
1. after the perception information of the various sension units of intelligence instrument is transferred to micro-control unit, perception information state at this time is also
It cannot be identified, understand by communication unit, perception information preferentially can be transferred to postposition gateway by micro-control unit at this time.
2. postposition gateway after receiving the perception information that micro-control unit is sent, can carry out identity to perception information and recognize
Then card examines whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains
Business datum numerical value accuracy.
Postposition intra-gateway has the header code for requesting instruction and data packet and data field format and check code, does not meet
The header code message of the instruction of coding regulation or data, does not meet the message of data field format, the message of check code mistake all can
It is intercepted, it will not be sent to communication unit, to attack after avoiding micro-control unit firmware program from being tampered using intelligence instrument
Hit remote control table.
3. rubbish or invalid information can be taken as to abandon by the perception information examined, subsequent processing is no longer done；Pass through
The perception information of examination, postposition gateway can carry out communication Protocol Conversion to data, by the safe unit in postposition gateway to sense
Know that information is encrypted, generate MAC check code, addition electronic signature realizes remote control table in perception information
Request and business datum are examined；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to micro-control again
Unit processed, micro-control unit forward the data to communication unit again, to realize the rank of network service and the control of data granularity.
4. the perception information after safe handling returns to micro- since postposition gateway is without the interface with communication unit direct communication
Control unit, after being transferred to communication unit by micro-control unit, then will be after postposition gateway processes by antenna by communication unit
Perception information is sent；It is responsible for receiving perception information by remote control table, decrypts, completes intelligence instrument perception information
Uplink.
Control information issues:
1. the Downlink Control Information of remote control table is received by intelligence instrument table end antenna first, it is then transmit to communication unit
Member；After communication unit receives control information, control information is transferred to the micro-control unit being electrical connected with it.
2. micro-control unit can not verify the control information received, therefore micro-control unit is receiving control
It after information, does not identify out and controls the information content, can not know the accuracy of control information data；Micro-control unit meeting at this time
Control information is transferred to the postposition gateway being electrical connected with it.
3. postposition gateway first checks the plaintext area of data, determines if to close after receiving control information
Rule；Unchartered data then directly abandon, and are not for further processing；Application layer is then carried out in accordance with the data of rule in plain text
Signature authentication and decryption, data after decryption can be checked according to the rule that specific instruction carries out ciphertext area, and to plaintext area
Enter mutually confirmation with the data in ciphertext area；The data for not conforming to ciphertext rule then directly abandon, in accordance with ciphertext rule data also
It need to determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, is otherwise then forwarded
Data are to microcontroller；By the processing of postposition gateway, the filtering to business order is realized.
4. the control information after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific
The control information content is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
Postposition gateway by embedded program firmware mode, is realized and micro-control unit by independent microprocessor
With the data packet transmission-receiving function of both communication units, the message of the data packet from micro-control unit is identified, filter, is forwarded to
The function of communication unit.Communication port can use UART, SPI, I2C etc. between microcontroller and communication unit, and agreement can use AT
Instruction or serial port protocol.
The application's has the beneficial effect that:
The application is provided with postposition gateway at the table end of intelligence instrument, and processing of the postposition gateway to upstream data is realized to network
Service the control of level and data granularity, the accuracy testing of data；The filtering to networking command is realized in the processing of data.
Specifically, preventing perception from believing the processing of perception information information security before perception information leaves intelligence instrument
Data is accurate in breath transmission process, and information inspection is carried out before controlling Info Down to intelligence instrument, guarantees to enter intelligence
The control information data at instrument end it is accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first scheme of the invention.
Fig. 2 is the structural schematic diagram of second scheme of the present invention.
Specific embodiment
The intelligence instrument that the application mentions mainly includes intellectual water meter, intelligent gas meter, intelligent electric meter, intellectual heat meter
Deng.In order to which the function and application to intelligence instrument more clearly illustrate, the application is using intelligent gas meter as main object
It is specifically addressed.
Embodiment 1
A kind of Internet of Things intelligence instrument with NB communication postposition gateway, includes micro-control unit, sension unit and communication unit
Member, the micro-control unit are electrical connected with communication unit and sension unit respectively, and the micro-control unit will be from sension unit
The perception information of acquisition is uploaded to remote control table by communication unit, and remote control table passes through communication unit for information is controlled
Member is issued to micro-control unit；The micro-control unit also and for guaranteeing that the accurate postposition gateway of communication data is electrical connected,
The micro-control unit and postposition gateway are two-way communication.
The sension unit includes but is not limited to:
Power supply sension unit, traffic aware unit, pressure sension unit, state aware unit, location aware unit, physical damage
Sension unit, equipment fault sension unit, operating unit, power control unit, security control unit, display unit and instruction are single
Member.
Power supply sension unit: for acquiring supply voltage (unit: millivolt), and judge voltage whether there is or not, height, superelevation, mistake
It is low, and output digital data is to micro-control unit.
Traffic aware unit: for acquiring combustion gas present flow rate (containing flow velocity, flows per unit time: m3/ s), and judge to flow
Amount whether there is or not, size, abnormal small flow, continue small flow etc., and output digital data is to micro-control unit.
Pressure sension unit: for acquiring gaseous-pressure (unit: Pa), and output digital data is to micro-control unit.
State aware unit: for acquiring gas meter, flow meter working condition, including sleep state, working condition, receiving and transmitting signal shape
State, and output digital data is to micro-control unit.
Location aware unit: for acquiring the latitude and longitude coordinates of gas meter, flow meter, and output digital data is to micro-control unit.
Physical damage sension unit: for acquiring shell of gas meter tamper button state, magnetic disturbance state, and number is exported
Data are to micro-control unit.
Equipment fault sension unit: for acquiring the malfunction coding of micro-control unit self-test, and output digital data is to micro-
Control unit.
Operating unit: for controlling the controller of gas meter valve, after receiving instruction, electromechanical valve is closed or is beaten
It opens.
Power control unit: for controlling power supply output line road and voltage stabilization value, instruction is received, line powering is turned off
It is adjusted with voltage levels.
Security control unit: for carrying out separate storage to the legal system related data inside gas meter, flow meter, downlink wireless is arrived
The data or order of gas meter, flow meter, are decrypted, and to the data or request of wireless uplink to gas company, are encrypted.
Display unit: for the liquid crystal display of gas meter, flow meter, the operation data and status information of gas meter, flow meter are shown, including tired
Count gas consumption (amount of money), aeration quantity (amount of money), remaining tolerance (amount of money), gas price, table number, valve state, magnetic disturbance state, battery
Voltage, radio-frequency receiving-transmitting state, order miscue, arrearage Recharge Promotion, the low prompt of voltage, alarm of uncapping, outer (combustion gas taking alarm
Leakage) etc..
Indicating unit: acousto-optic instruction, when operating gas meter, flow meter, according to circumstances, buzzer has yowl, short ring, short ring several times
Equal different modes instruction, indicator light have the different modes instructions such as long bright, flashing.
Postposition gateway by embedded program firmware mode, is realized and micro-control unit by independent microprocessor
With the data packet transmission-receiving function of both communication units, the message of the data packet from micro-control unit is identified, filter, is forwarded to
The function of communication unit.Communication port can use UART, SPI, I2C etc. between microcontroller and communication unit, and agreement can use AT
Instruction or serial port protocol.
Embodiment 2
A kind of Internet of Things intelligence instrument with NB communication postposition gateway, includes micro-control unit, sension unit and communication unit
Member, the micro-control unit are electrical connected with communication unit and sension unit respectively, and the micro-control unit will be from sension unit
The perception information of acquisition is uploaded to remote control table by communication unit, and remote control table passes through communication unit for information is controlled
Member is issued to micro-control unit；The micro-control unit also and for guaranteeing that the accurate postposition gateway of communication data is electrical connected,
The micro-control unit and postposition gateway are two-way communication.
The sension unit includes but is not limited to:
Power supply sension unit, traffic aware unit, pressure sension unit, state aware unit, location aware unit, physical damage
Sension unit, equipment fault sension unit, operating unit, power control unit, security control unit, display unit and instruction are single
Member.
Power supply sension unit: for acquiring supply voltage (unit: millivolt), and judge voltage whether there is or not, height, superelevation, mistake
It is low, and output digital data is to micro-control unit.
Traffic aware unit: for acquiring combustion gas present flow rate (containing flow velocity, flows per unit time: m3/ s), and judge to flow
Amount whether there is or not, size, abnormal small flow, continue small flow etc., and output digital data is to micro-control unit.
Pressure sension unit: for acquiring gaseous-pressure (unit: Pa), and output digital data is to micro-control unit.
State aware unit: for acquiring gas meter, flow meter working condition, including sleep state, working condition, receiving and transmitting signal shape
State, and output digital data is to micro-control unit.
Location aware unit: for acquiring the latitude and longitude coordinates of gas meter, flow meter, and output digital data is to micro-control unit.
Physical damage sension unit: for acquiring shell of gas meter tamper button state, magnetic disturbance state, and number is exported
Data are to micro-control unit.
Equipment fault sension unit: for acquiring the malfunction coding of micro-control unit self-test, and output digital data is to micro-
Control unit.
Operating unit: for controlling the controller of gas meter valve, after receiving instruction, electromechanical valve is closed or is beaten
It opens.
Power control unit: for controlling power supply output line road and voltage stabilization value, instruction is received, line powering is turned off
It is adjusted with voltage levels.
Security control unit: for carrying out separate storage to the legal system related data inside gas meter, flow meter, downlink wireless is arrived
The data or order of gas meter, flow meter, are decrypted, and to the data or request of wireless uplink to gas company, are encrypted.
Display unit: for the liquid crystal display of gas meter, flow meter, the operation data and status information of gas meter, flow meter are shown, including tired
Count gas consumption (amount of money), aeration quantity (amount of money), remaining tolerance (amount of money), gas price, table number, valve state, magnetic disturbance state, battery
Voltage, radio-frequency receiving-transmitting state, order miscue, arrearage Recharge Promotion, the low prompt of voltage, alarm of uncapping, outer (combustion gas taking alarm
Leakage) etc..
Indicating unit: acousto-optic instruction, when operating gas meter, flow meter, according to circumstances, buzzer has yowl, short ring, short ring several times
Equal different modes instruction, indicator light have the different modes instructions such as long bright, flashing.
As shown in Figure 1, a kind of scheme are as follows:
It is to be electrical connected that the postposition gateway, which is arranged between communication unit and micro-control unit, and between three, direct phase
Realization two-way communication between the two even.
Specific step is as follows for information flow:
Perception information is uploaded:
1. the perception information of the sension unit of gas meter, flow meter is transferred to postposition gateway by micro-control unit.
2. postposition gateway after receiving the perception information that micro-control unit is sent, can carry out identity to perception information and recognize
Then card examines whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains
Business datum numerical value accuracy.
Postposition intra-gateway has the header code for requesting instruction and data packet and data field format and check code, does not meet
The header code message of the instruction of coding regulation or data, does not meet the message of data field format, the message of check code mistake all can
It is intercepted, it will not be sent to communication unit, to attack after avoiding micro-control unit firmware program from being tampered using gas meter, flow meter
Remote control table.
3. rubbish or invalid information can be taken as to abandon by the perception information examined, subsequent processing is no longer done；Pass through
The perception information of examination, postposition gateway can carry out communication Protocol Conversion to data, by the safe unit in postposition gateway to sense
Know that information is encrypted, generate MAC check code, addition electronic signature realizes remote control table in perception information
Request and business datum are examined；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to communication unit
Member, to realize the rank of network service and the control of data granularity.
4. the perception information after safe handling can be transferred to communication unit through postposition gateway, pass through antenna by communication unit
Perception information after postposition gateway processes is sent, is received by remote control table, the upper of gas meter, flow meter perception information is completed
Row transmission.Remote control table can be gas company's server in practice.
Control information issues:
1. the Downlink Control Information of remote control table is received the communication unit for being transmitted to gas meter, flow meter table end by antenna first, lead to
Control information can be transferred to the postposition gateway being electrical connected with communication unit after receiving control information by letter unit.
2. postposition gateway first checks the plaintext area of data, determines if to close after receiving control information
Rule；Unchartered data then directly abandon, and are not for further processing；Application layer is then carried out in accordance with the data of rule in plain text
Signature authentication and decryption, data after decryption can be checked according to the rule that specific instruction carries out ciphertext area, and to plaintext area
Enter mutually confirmation with the data in ciphertext area；The data for not conforming to ciphertext rule then directly abandon, in accordance with ciphertext rule data also
It need to determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, is otherwise then forwarded
Data are to microcontroller；By the processing of postposition gateway, the filtering to business order is realized.
3. the control information after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific
The control information content is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
Postposition gateway by embedded program firmware mode, is realized and micro-control unit by independent microprocessor
With the data packet transmission-receiving function of both communication units, the message of the data packet from micro-control unit is identified, filter, is forwarded to
The function of communication unit.Communication port can use UART, SPI, I2C etc. between microcontroller and communication unit, and agreement can use AT
Instruction or serial port protocol.
Embodiment 3
A kind of Internet of Things intelligence instrument with NB communication postposition gateway, includes micro-control unit, sension unit and communication unit
Member, the micro-control unit are electrical connected with communication unit and sension unit respectively, and the micro-control unit will be from sension unit
The perception information of acquisition is uploaded to remote control table by communication unit, and remote control table passes through communication unit for information is controlled
Member is issued to micro-control unit；The micro-control unit also and for guaranteeing that the accurate postposition gateway of communication data is electrical connected,
The micro-control unit and postposition gateway are two-way communication.
The sension unit includes but is not limited to:
Power supply sension unit, traffic aware unit, pressure sension unit, state aware unit, location aware unit, physical damage
Sension unit, equipment fault sension unit, operating unit, power control unit, security control unit, display unit and instruction are single
Member.
Power supply sension unit: for acquiring supply voltage (unit: millivolt), and judge voltage whether there is or not, height, superelevation, mistake
It is low, and output digital data is to micro-control unit.
Traffic aware unit: for acquiring combustion gas present flow rate (containing flow velocity, flows per unit time: m3/ s), and judge to flow
Amount whether there is or not, size, abnormal small flow, continue small flow etc., and output digital data is to micro-control unit.
Pressure sension unit: for acquiring gaseous-pressure (unit: Pa), and output digital data is to micro-control unit.
State aware unit: for acquiring gas meter, flow meter working condition, including sleep state, working condition, receiving and transmitting signal shape
State, and output digital data is to micro-control unit.
Location aware unit: for acquiring the latitude and longitude coordinates of gas meter, flow meter, and output digital data is to micro-control unit.
Physical damage sension unit: for acquiring shell of gas meter tamper button state, magnetic disturbance state, and number is exported
Data are to micro-control unit.
Equipment fault sension unit: for acquiring the malfunction coding of micro-control unit self-test, and output digital data is to micro-
Control unit.
Operating unit: for controlling the controller of gas meter valve, after receiving instruction, electromechanical valve is closed or is beaten
It opens.
Power control unit: for controlling power supply output line road and voltage stabilization value, instruction is received, line powering is turned off
It is adjusted with voltage levels.
Security control unit: for carrying out separate storage to the legal system related data inside gas meter, flow meter, downlink wireless is arrived
The data or order of gas meter, flow meter, are decrypted, and to the data or request of wireless uplink to gas company, are encrypted.
Display unit: for the liquid crystal display of gas meter, flow meter, the operation data and status information of gas meter, flow meter are shown, including tired
Count gas consumption (amount of money), aeration quantity (amount of money), remaining tolerance (amount of money), gas price, table number, valve state, magnetic disturbance state, battery
Voltage, radio-frequency receiving-transmitting state, order miscue, arrearage Recharge Promotion, the low prompt of voltage, alarm of uncapping, outer (combustion gas taking alarm
Leakage) etc..
Indicating unit: acousto-optic instruction, when operating gas meter, flow meter, according to circumstances, buzzer has yowl, short ring, short ring several times
Equal different modes instruction, indicator light have the different modes instructions such as long bright, flashing.
As shown in Fig. 2, a kind of scheme are as follows:
The postposition gateway is directly electrically connected with micro-control unit, and the two realizes two-way communication；The communication unit with it is micro-
Control unit is directly electrically connected, and the two realizes two-way communication.Postposition gateway and communication unit are without being directly connected in this scheme
Relationship.
Specific step is as follows for information flow:
Perception information uploads:
1. after the perception information of the various sension units of gas meter, flow meter is transferred to micro-control unit, perception information state at this time is also not
It can be identified, understand by communication unit, perception information preferentially can be transferred to postposition gateway by micro-control unit at this time.
2. postposition gateway after receiving the perception information that micro-control unit is sent, can carry out identity to perception information and recognize
Then card examines whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains
Business datum numerical value accuracy.
Postposition intra-gateway has the header code for requesting instruction and data packet and data field format and check code, does not meet
The header code message of the instruction of coding regulation or data, does not meet the message of data field format, the message of check code mistake all can
It is intercepted, it will not be sent to communication unit, to attack after avoiding micro-control unit firmware program from being tampered using gas meter, flow meter
Remote control table.
3. rubbish or invalid information can be taken as to abandon by the perception information examined, subsequent processing is no longer done；Pass through
The perception information of examination, postposition gateway can carry out communication Protocol Conversion to data, by the safe unit in postposition gateway to sense
Know that information is encrypted, generate MAC check code, addition electronic signature realizes remote control table in perception information
Request and business datum are examined；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to micro-control again
Unit processed, micro-control unit forward the data to communication unit again, to realize the rank of network service and the control of data granularity.
4. the perception information after safe handling returns to micro- since postposition gateway is without the interface with communication unit direct communication
Control unit, after being transferred to communication unit by micro-control unit, then will be after postposition gateway processes by antenna by communication unit
Perception information is sent；It is responsible for receiving perception information by remote control table, decrypts, completes the upper of gas meter, flow meter perception information
Row transmission.
Control information issues:
1. the Downlink Control Information of remote control table is received by gas meter, flow meter table end antenna first, it is then transmit to communication unit；
After communication unit receives control information, control information is transferred to the micro-control unit being electrical connected with it.
2. micro-control unit can not verify the control information received, therefore micro-control unit is receiving control
It after information, does not identify out and controls the information content, can not know the accuracy of control information data；Micro-control unit meeting at this time
Control information is transferred to the postposition gateway being electrical connected with it.
3. postposition gateway first checks the plaintext area of data, determines if to close after receiving control information
Rule；Unchartered data then directly abandon, and are not for further processing；Application layer is then carried out in accordance with the data of rule in plain text
Signature authentication and decryption, data after decryption can be checked according to the rule that specific instruction carries out ciphertext area, and to plaintext area
Enter mutually confirmation with the data in ciphertext area；The data for not conforming to ciphertext rule then directly abandon, in accordance with ciphertext rule data also
It need to determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, is otherwise then forwarded
Data are to microcontroller；By the processing of postposition gateway, the filtering to business order is realized.
4. the control information after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific
The control information content is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
Postposition gateway by embedded program firmware mode, is realized and micro-control unit by independent microprocessor
With the data packet transmission-receiving function of both communication units, the message of the data packet from micro-control unit is identified, filter, is forwarded to
The function of communication unit.Communication port can use UART, SPI, I2C etc. between microcontroller and communication unit, and agreement can use AT
Instruction or serial port protocol.
Above embodiments are only to illustrate technical solution of the invention, rather than its limitations.Those skilled in the art exist
The invention discloses technical scope in, any changes or substitutions that can be easily thought of, should be covered by the protection scope of the present invention.
Therefore, the scope of protection of the present invention shall be subject to the scope of protection defined by the claims.
Claims (9)
1. the Internet of Things intelligence instrument with NB communication postposition gateway, it is characterised in that: include micro-control unit, sension unit
And communication unit, the micro-control unit are electrical connected with communication unit and sension unit respectively, the micro-control unit will be from
The perception information that sension unit obtains is uploaded to remote control table by communication unit, and remote control table is led to information is controlled
It crosses communication unit and is issued to micro-control unit；The micro-control unit is also and for guaranteeing the accurate postposition gateway electricity of communication data
Property be connected, the micro-control unit and postposition gateway are two-way communication.
2. the Internet of Things intelligence instrument according to claim 1 with NB communication postposition gateway, it is characterised in that: the sense
Know that unit includes but is not limited to:
Power supply sension unit, traffic aware unit, pressure sension unit, state aware unit, location aware unit, physical damage
Sension unit, equipment fault sension unit, operating unit, power control unit, security control unit, display unit and instruction are single
Member.
3. the Internet of Things intelligence instrument according to claim 1 with NB communication postposition gateway, it is characterised in that: after described
Setting gateway to be arranged between communication unit and micro-control unit, and between three is to be electrical connected, the two being connected directly it
Between realize two-way communication.
4. the Internet of Things intelligence instrument according to claim 3 with NB communication postposition gateway, it is characterised in that:
Specific step is as follows for information flow:
Perception information is uploaded:
1) perception information of the sension unit of intelligence instrument is transferred to postposition gateway by micro-control unit；
2) postposition gateway can carry out authentication to perception information, so after receiving the perception information that micro-control unit is sent
The business that whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains is examined afterwards
The accuracy of value data；
3) perception information that does not pass through examination can be taken as rubbish or invalid information to abandon, and no longer do subsequent processing；Pass through examination
Perception information, postposition gateway can to data carry out communication Protocol Conversion, by the safe unit in postposition gateway to perception believe
Breath is encrypted, and generates MAC check code, and addition electronic signature realizes remote control table to the request in perception information
It is examined with business datum；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to communication unit
Member, to realize the rank of network service and the control of data granularity；
4) perception information after safe handling can be transferred to communication unit through postposition gateway, by communication unit by antenna will after
Perception information after setting gateway processes is sent, and is received by remote control table, and the uplink of intelligence instrument perception information is completed
Transmission.
5. the Internet of Things intelligence instrument according to claim 3 with NB communication postposition gateway, it is characterised in that:
Specific step is as follows for information flow:
Control information issues:
1) Downlink Control Information of remote control table is received the communication unit for being transmitted to intelligence instrument table end by antenna first,
Control information can be transferred to the postposition gateway being electrical connected with communication unit after receiving control information by communication unit；
2) postposition gateway first checks the plaintext area of data, determines if in accordance with rule after receiving control information
Then；Unchartered data then directly abandon, and are not for further processing；The label of application layer are then carried out in accordance with the data of rule in plain text
Name certification and decryption, the data meeting after decryption carry out the regular of ciphertext area according to specific instruction and check, and to plaintext Qu Yumi
The data in literary area enter mutually confirmation；The data for not conforming to ciphertext rule then directly abandon, and also need really in accordance with the data of ciphertext rule
Determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, and otherwise then forwards data
To microcontroller；By the processing of postposition gateway, the filtering to business order is realized；
3) control information of the after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific control
The information content processed is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
6. the Internet of Things intelligence instrument according to claim 1 with NB communication postposition gateway, it is characterised in that:
The postposition gateway is directly electrically connected with micro-control unit, and the two realizes two-way communication；The communication unit with it is micro-
Control unit is directly electrically connected, and the two realizes two-way communication.
7. the Internet of Things intelligence instrument according to claim 6 with NB communication postposition gateway, it is characterised in that:
Specific step is as follows for information flow:
Perception information uploads:
1) after the perception information of the various sension units of intelligence instrument is transferred to micro-control unit, perception information state at this time
It can't be identified, understand by communication unit, perception information preferentially can be transferred to postposition gateway by micro-control unit at this time；
2) postposition gateway can carry out authentication to perception information, so after receiving the perception information that micro-control unit is sent
The business that whether request and business datum in perception information belong to the request of remote control table needs, confirmation obtains is examined afterwards
The accuracy of value data；
3) perception information that does not pass through examination can be taken as rubbish or invalid information to abandon, and no longer do subsequent processing；Pass through examination
Perception information, postposition gateway can to data carry out communication Protocol Conversion, by the safe unit in postposition gateway to perception believe
Breath is encrypted, and generates MAC check code, and addition electronic signature realizes remote control table to the request in perception information
It is examined with business datum；
According to specific instruction and rule, determine to asking summed data to be abandoned, shielded and adjusted；Request sum number need to be abandoned
According to postposition gateway directly replys micro-control unit；The data that need to be shielded and adjust, postposition gateway are adjusted according to preset rules
Whole, hereafter the encryption and digital signature adjusted for asking summed data to need further progress operation layer forward the data to micro-control again
Unit processed, micro-control unit forward the data to communication unit again, to realize the rank of network service and the control of data granularity；
4) for since postposition gateway is without the interface with communication unit direct communication, the perception information after safe handling returns to micro-control
Unit processed, after being transferred to communication unit by micro-control unit, then by communication unit by antenna by the sense after postposition gateway processes
Know that information is sent；It is responsible for receiving perception information by remote control table, decrypts, completes the upper of intelligence instrument perception information
Row transmission.
8. the Internet of Things intelligence instrument according to claim 6 with NB communication postposition gateway, it is characterised in that:
Specific step is as follows for information flow:
Control information issues:
1) Downlink Control Information of remote control table is received by intelligence instrument table end antenna first, is then transmit to communication unit
Member；After communication unit receives control information, control information is transferred to the micro-control unit being electrical connected with it；
2) micro-control unit can not verify the control information received, therefore micro-control unit is receiving control letter
It after breath, does not identify out and controls the information content, can not know the accuracy of control information data；Micro-control unit can incite somebody to action at this time
Control information is transferred to the postposition gateway being electrical connected with it；
3) postposition gateway first checks the plaintext area of data, determines if in accordance with rule after receiving control information
Then；Unchartered data then directly abandon, and are not for further processing；The label of application layer are then carried out in accordance with the data of rule in plain text
Name certification and decryption, the data meeting after decryption carry out the regular of ciphertext area according to specific instruction and check, and to plaintext Qu Yumi
The data in literary area enter mutually confirmation；The data for not conforming to ciphertext rule then directly abandon, and also need really in accordance with the data of ciphertext rule
Determine whether table end provides this service；If table end does not provide this service, postposition gateway is directly replied, and otherwise then forwards data
To microcontroller；By the processing of postposition gateway, the filtering to business order is realized；
4) control information of the after postposition gateway processes can be transferred to micro-control unit, by micro-control unit according to specific control
The information content processed is issued to specified functional unit and executes corresponding control information, completes the downlink transfer of control information.
9. the Internet of Things intelligence instrument according to claim 1 with NB communication postposition gateway, it is characterised in that: postposition net
Pass, by embedded program firmware mode, is realized and both micro-control unit and communication unit by independent microprocessor
Data packet transmission-receiving function, the function that the message of the data packet from micro-control unit is identified, filters, be forwarded to communication unit
Energy.
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