CN207184521U - Internet of Things Multifunctional gateway based on NB IoT - Google Patents
Internet of Things Multifunctional gateway based on NB IoT Download PDFInfo
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- CN207184521U CN207184521U CN201721029175.0U CN201721029175U CN207184521U CN 207184521 U CN207184521 U CN 207184521U CN 201721029175 U CN201721029175 U CN 201721029175U CN 207184521 U CN207184521 U CN 207184521U
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Abstract
The utility model provides a kind of Internet of Things Multifunctional gateway based on NB IoT, it is intended to solves two kinds and the above are wireless or the communication issue of wired sensing communication network and NB IoT.Including interface module, modular converter, main control module, NB IoT modules.Interface module, there is provided the module interface with other wireless or wired sensing networks；Modular converter, realize electrical level match and the conversion of interface module and main control module；Main control module, the protocol adaptation of each communication network, protocol conversion, data processing are provided by microprocessor；NB IoT modules, pass through operator's base station access to communication networks and server communication.Using microprocessor as core component, other mixed-media network modules mixed-medias are connected by standard Extensible interface, the information established with bus mode between other networks exchanges, and is communicated with NB IoT modules by mobile operator base stations with server.
Description
Technical field
It the utility model is related to radio network gateway field, more particularly to the Multifunctional gateway based on arrowband Internet of Things.
Background technology
Radio sensing network is a kind of wireless self-organization network system of oriented mission, generally there is some data gathering nodes
Form.The currently used technology for wireless networking includes：The short-range communication techniques such as Zigbee, WiFi, Bluetooth,
LoRa, and the wan communication technology such as NB-IoT just risen at present.It is also same that different wireless communication technologys respectively has advantage
When there is limitation in use：LoRa is transmitted in unlicensed spectrum, and reliability, the security of transmission are not enough to build
More massive Internet of things system；The short-range communication techniques such as WIFI, Zigbee, Bluetooth, its MANET realized covering
Power is not strong, and lacks the standard of unified operation and maintenance in utilization.
With NB-IoT proposition, a series of Internet of Things problems are resolved scheme.Yet with various radio communication skills
The terminal of art various criterion can not interconnect, and cause the MANET that traditional wireless communication technology is formed to be led to NB-IoT
Letter.To solve the above problems, one or more traditional Internet of things system and NB-IoT can be connected simultaneously there is an urgent need to a kind of
Gateway device carrys out the flexible environment of internet of things for adapting to current increasingly complexity.
Utility model content
The problem of for being proposed in background technology, it is multi-functional that the utility model provides a kind of Internet of Things suitable for NB-IoT
Gateway device, interconnecting for communication network in current environment and NB-IoT networks can be completed, serial network has been expanded and has led to
Believe scope.
Therefore, the utility model adopts the following technical scheme that：
A kind of Internet of Things Multifunctional gateway based on NB-IoT, wherein, stating gateway includes：Interface module, modular converter, master
Control module, NB-IoT modules；
The interface module, there is provided the communication module interface with wireless or wired sensing network；The interface module bag
Include：One or more of 485 interface boards, 232 interface boards, CAN interface plate, Ethernet interface, USB interface and indicator lamp mould
Block, 485 interface board are provided with 485 channel interfaces and are used for connecting 485 networks, and 232 interface board is provided with 232 passages and connect
Mouth is used for connecting 232 networks, and the CAN interface plate is provided with CAN channel interfaces and is used for connecting CAN network, and the Ethernet connects
Mouth is used for and ethernet communication, and the USB interface is used for connecting USB network, and 485 interface board or 232 interface boards respectively can
For connecting Zigbee network, Bluetooth networks, Wi-Fi network；The interface module passes through interface circuit and modular converter
It is connected, is also used for completing interface protection while heterogeneous networks are connected；
The modular converter, realize electrical level match and the conversion of interface module and main control module；The modular converter includes：
Bus level change-over circuit, serial expanded circuit and clock circuit；The modular converter passes through bus level change-over circuit and master
Control module is connected, for expanding the serial ports of main control module and completing the level conversion of serial ports and each bus；
The main control module, the protocol adaptation of each communication network, protocol conversion, data processing are provided by microprocessor；
The main control module is in addition to power module, data memory module and interface circuit using the microprocessor as core component；
The NB-IoT modules, pass through operator's base station access to communication networks and server communication；The NB-IoT modules
Authorized to be operated under frequency spectrum, support the Internet of Things communication module group of 3GPP communications protocol；The NB-IoT modules control comprising SIM
Circuit, RTC control circuits, power-supplying circuit；
Using the microprocessor as core component, the microprocessor is connected the gateway with multiple standard Extensible interfaces
Connect, one or more communication networks can be connected；The microprocessor in a manner of bus by bus level change-over circuit with
Each interface is connected；The microprocessor is by the reception or transmission of the complete paired data of interface, and the microprocessor is according to connecing
Data are parsed and encapsulated by the difference of the data received, and target communication network communication protocol is completed in main control module
After encapsulation, the data for encapsulating completion are communicated or are sent to server by mobile operator base stations from NB-IoT modules
Other objective networks；
Multiple communication modules of the interface module access are with the NB-IoT modules under the control of the microprocessor
Form internal communication network；The internal communication network is using the microprocessor as core, and the communication module is at micro- place
Manage device control under, can independently with NB-IoT module two-way communications；The multiple communication module under the control of the microprocessor,
Can also mutually it be communicated.
Preferably, stating each interface in interface module can be extended based on EBI, connect the communication module；
Mesh network is formed by the internal communication network between the communication module, the mesh network is the token based on bus
Loop network, it is being physically bus structures, logically ring-type；According to current Interface connection bus, there is provided multiple
EBI, one of interface connect main website of the controller as the token bus network, and remaining each interface connects
An aggregation node of external network is connect as the host computer control Ad hoc, while also serves as the one of the token bus network
Individual slave station；The communications protocol defined in the main website, the communication of network and the transmitting-receiving of data are controlled, and data are sent out by interface
The bus control unit delivered in gateway, the parsing of agreement is completed, target protocol is carried out to data again in the application layer of gateway
Encapsulation, is sent to target port.
Preferably, the gateway provides multiple standards interface, can connect including Zigbee, WiFi, Bluetooth, LoRa
The network of any one and the above in radio sensing network, and PLC, RS485, RS232, CAN industrial network, by the net
Data in network are sent to server by NB-IoT modules.
Preferably, the MANET of the interface connection in the gateway be multihop network, connected on interface be described in from group
A unique network aggregation node for net, is defined as main frame, other are slave；The main frame is every slave point in network
Address designator with a byte, and addition to equipment and exiting is managed；The slave described in communication process is to institute
State main frame and send data, the main frame sends data to the intra-gateway by interface；The gateway interface connection
LoRa networks can form multi channel Star Network with the radio frequency chip in the gateway, receive disappearing for each node transmission
Breath sends and data is handled to intra-gateway.
Preferably, the main control module carries integrated multiple bus interface, low-power consumption STM32F series monolithics as embedding
Enter formula processor, NB-IoT modules are connected by serial ports.
Preferably, the bus level change-over circuit connects the main control module, electric with extended serial port after level conversion
Road, RTC clock circuit are attached；The extended serial port circuit connects asynchronous receipts by the microprocessor spi bus interface
Hair device expands 4 road serial line interfaces, connects 485 interface circuits；One is connected using a serial ports in the microprocessor to integrate
CAN interface controller from processor, for connecting CAN interface circuit, and connect asynchronism transceiver and expand 232 and connect
Mouthful.
Preferably, 485 interface board is connected with the interface circuit of main control module 485, and use is anti-lightning strike, supports more piece
The single supply isolation cake core ADM2587 of point, and the chip is controlled by 485 interface circuits on the main control module；The CAN
Interface board is connected with the main control module CAN interface circuit, and CAN controller connects with CAN transceiver, wherein CAN
Transceiver is controlled by the CAN interface circuit on the main control module；The progress of two stages of circuit docking port is equipped with before each passage
Protection；By interface board, user independently can select interface to access according to the network in current environment.
Preferably, the power module is respectively each several part power supply using 16V, 5V Power Management Design.
The utility model proposes a kind of tradition that solves from group on the basis of being communicated between meeting traditional Internet of Things network
The equipment scheme of net and NB-IoT communication issues, solves the problems, such as that communication distance is short in traditional networking, security is poor, the program
In be integrated with NB-IoT modules, there is provided multiple standard Extensible interfaces, it is proposed that USB interface is direct-connected, 485 interfaces are direct-connected, CAN leads to
Road is direct-connected and 232 interfaces are direct-connected and bus structured networks access scheme, one or more legacy networks can be allowed to pass through NB- simultaneously
IoT modules connection communication network is communicated with user terminal server, be based on more than, user can be according to actual MANET
Interface case and communication mode are independently selected connected mode.
Brief description of the drawings
Fig. 1 is general frame figure of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is expanded circuit figure of the present utility model.
Fig. 4 is interface network exploded view of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Below by embodiment to general frame of the present utility model, circuit design and program work stream
Journey provides further instruction.
Embodiment one
The gateway uses three layer model, respectively including articulamentum, core layer and wan communication layer.Wherein articulamentum is used
Carry out other ad hoc networks in JA(junction ambient), make its access gateway and communicated with core layer；Core layer, it is connected to articulamentum
With wan communication layer, agreement fusion, agreement are carried out to the data received from articulamentum and wan communication layer in this layer
Conversion, data processing；Wide area network articulamentum is responsible for accessing communication network, is communicated with server.
As shown in figure 1, it is applied to NB-IoT (arrowband Internet of Things) Internet of Things Multifunctional gateway by interface module, modulus of conversion
Block, main control module, NB-IoT modules composition；Provide an expansible USB host interface, Ethernet interface, connect for 4 485
Mouthful, 2 232 interfaces and CAN interface, it is possible to achieve Ethernet, usb bus network, 485 bus network, CAN network,
The communication mutual between any two of NB-IoT networks.
In the gateway main control module, integrated multiple bus interface, low-power consumption STM32L0 series monolithics are carried as embedding
Enter formula processor, NB-IoT modules are connected by serial ports, include USB network interface circuit, there is provided USB host interface；NB-IoT
Module is connected by serial ports with microprocessor, and inside includes SIM control circuits, RTC control circuits, 3.8V power-supplying circuits.
Main control module includes extended serial port circuit, bus level change-over circuit, RTC clock circuit；Bus level conversion electricity
Road connects main control module, is attached after level conversion with extended serial port circuit, RTC clock circuit；Extended serial port circuit is adopted
The serial line interface of 4 tunnel 232 is extended with asynchronism transceiver MAX14380, and passes through the interface circuit of MAX14840 connections 485；Using main place
Another single-chip microcomputer comprising CAN controller of UART connections is managed in device as from processor, for extend CAN interface circuit with
232 interface circuits, the caching of CAN is avoided to conflict with USB interface buffer area.
Modular converter includes extended serial port circuit, bus level change-over circuit, RTC clock circuit；Interface module includes 232
Interface board, 485 interface boards, CAN interface plate, Ethernet interface plate and indicator lamp interface board, for completing the expansion of interface
Exhibition and protection, also provide selection for the access of where applicable other communication networks.232 interface boards are gone here and there by being extended in main control module
Mouth circuit obtains, including 2 232 passages, is controlled by 232 interface circuit on main control module；485 interface boards and main control module 485
Interface circuit connects, and use is anti-lightning strike, supports the single supply of multinode isolation cake core ADM2587, and the chip is controlled by master
485 interface circuits in module are controlled, an interface board integrates 2 485 passages；CAN interface plate and main control module CAN interface circuit
Connection, CAN controller connect with CAN transceiver, and wherein CAN transceiver is controlled by the CAN interface on main control module
Circuit, every piece of interface board integrate 2 CAN passages；By interface board, user can independently selection connects according to the network in current environment
Mouth access.Multiple standard Extensible interface channels are integrated in each interface board;Wherein master control borad passes through bus level change-over circuit
It is connected with modular converter, interface module is connected by each interface board of inside with the interface circuit in main control module, and controlled
In main control module.It is specific as shown in Figure 2.
The single-chip microcomputer that CAN interface is selected with 232 Interface Expanding circuits uses STM32L0 series processors, in this place
The encapsulation and parsing of CAN host-host protocol and 232 host-host protocols can be completed in reason device, is receiving the data of interface transmission
Afterwards, it is sent to gateway primary processor after being extracted to valid data in time by serial ports.Processor keeps same with primary processor
Step communication.External 16V, 5V power supply of power module, while built-in DC-DC power module, linear voltage regulator are each several part in system
Power supply.
STM32L0R8T6 is chosen in force as primary processor, by UART1 connection BC95, by DM in single-chip microcomputer,
DP, USBOE, USB_CRS_SYNC, VDD_USB connect usb circuit；Pass through USART2 connection bus level change-over circuits.
It is connected in force using asynchronism transceiver MAX14380 with spi bus in processor and extends 4 road serial line interfaces, is connect
Mouth circuit such as Fig. 3 shows, and wherein will be converted to 485 interface circuits by two-way serial line interface connection MAX14840,；Using STM32F systems
Row single-chip microcomputer is connected with UART in primary processor, for expanding CAN interface circuit and 232 interface circuits；
232 interface boards are in modular converter from processor extended serial port circuit by obtaining in force, including 2 232 logical
Road, it is controlled by 232 interface circuit from processor；485 interface boards are connected with the interface circuit of main control module 485, use is anti-lightning strike,
The single supply isolation cake core ADM2587 of multinode is supported, and the chip is controlled by 485 interface circuits on main control module, one
Individual interface board integrates 2 485 passages；CAN interface plate is connected with main control module CAN interface circuit, CAN controller and CAN
Transceiver connects, and wherein CAN transceiver is controlled by the CAN interface circuit on main control module, and every piece of interface board is integrated 2
CAN passages；
In force, each mixed-media network modules mixed-media can be independently connected into interface on hardware, in the usb bus corresponding to interface or
It can be communicated with NB-IoT modules by processor in 485 buses or CAN, can also communicated between any two respectively.Connection
Each network communication module on the bus sends data centered on processor, to processor, is assisted by processor
After discussing fusion, protocol conversion, data processing, send to target communication network, in NB-IoT networks, data will pass through telecommunications network
Network is sent to server.Each interface can be extended based on Current bus interface wherein in interface module, be connected various logical
Interrogate module.Mesh network is formed by the internal communication network between various communication modules, the network is according to current interface
Connecting bus, there is provided multiple EBIs, one of interface connect main website of the controller as the token bus network,
Remaining each interface connects an aggregation node of external network as the host computer control Ad hoc, while also serves as this
One slave station of token bus network.The communications protocol defined in main website, controls the communication of network and the transmitting-receiving of data, and by number
The bus control unit to gateway is sent according to by interface, completes the parsing of agreement, data are entered again in the application layer of gateway
The encapsulation of row target protocol, is sent to target port.
The standard interface that gateway provides can connect the radio sensing network such as including Zigbee, WiFi, Bluetooth, LoRa,
And the network of any one and the above in the industrial network such as PLC, RS485, RS232, CAN.Zigbee module, LoRa modules
Serial communication is supported, 232,485 interfaces can be connected；Bluetooth module, WIFI module support USB port, serial ports；It is other to be usually used in industry
Communication module in network supports 485 interfaces or CAN interface；The MANETs such as Zigbee, bluetooth are multihop network, on interface
The unique network aggregation node for the MANET of connection, is defined as main frame, other are slave.The main frame is in network
Every slave distribute the address designator of a byte, and addition to equipment and release are managed, in communication process
Slave is sent into data to main frame to send to intra-gateway by interface；LoRa networks connect less radio-frequency by the gateway interface
Chip forms multi channel Star Network with LoRa communication nodes in environment, receives the message that each node is sent and sends to gateway
Inside is handled data.Mixed-media network modules mixed-media can form MANET and be connected to interface in wired or wireless manner by interface
In, with the network including NB-IoT, centered on processor, data are sent to processor, agreement is carried out by processor
After fusion, protocol conversion, data processing, realization communicates between any two.
As Fig. 4 shows, each interface can complete extension in the state of current.USB interface can be completed by hub
Extension；CAN interface, 485 interfaces, 232 interfaces can be extended using bus.Interface after extension can connect different lead to
Module is interrogated, forms an independent token network.Specific implementation is as follows：
According to current Interface connection bus, there is provided multiple EBIs, one of interface connect a controller and made
For the main website of the token bus network, the communications protocol defined in main website controls the communication of network and the transmitting-receiving of data, and by number
According to sending the bus control unit to gateway by interface.Remaining interface connects an aggregation node of external network according to demand
As the host computer control Ad hoc, while also serve as a slave station of the token bus network.Network is physically total
Cable architecture, logically token-ring network, realize data transmit-receive of the modules with intra-gateway processor.
Each communication network is individually present mutually, between network the communication of any two can by operation be selected manually, choosing
Select result and working condition is shown by indicator lamp.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (8)
1. a kind of Internet of Things Multifunctional gateway based on NB-IoT, it is characterised in that the gateway includes：Interface module, conversion
Module, main control module, NB-IoT modules；
The interface module, there is provided the communication module interface with wireless or wired sensing network；The interface module includes：
One or more of 485 interface boards, 232 interface boards, CAN interface plate, Ethernet interface, USB interface and indicating lamp module,
485 interface board is provided with 485 channel interfaces and is used for connecting 485 networks, and 232 interface board is provided with 232 channel interfaces
For connecting 232 networks, the CAN interface plate is provided with CAN channel interfaces and is used for connecting CAN network, the Ethernet interface
It is used for and ethernet communication, the USB interface is used for connecting USB network, 485 interface board or 232 interface boards is separately available
To connect Zigbee network, Bluetooth networks, Wi-Fi network；The interface module passes through interface circuit and modular converter phase
Even, also it is used for completing interface protection while heterogeneous networks are connected；
The modular converter, realize electrical level match and the conversion of interface module and main control module；The modular converter includes：Bus
Level shifting circuit, serial expanded circuit and clock circuit；The modular converter passes through bus level change-over circuit and master control mould
Block is connected, for expanding the serial ports of main control module and completing the level conversion of serial ports and each bus；
The main control module, the protocol adaptation of each communication network, protocol conversion, data processing are provided by microprocessor；It is described
Main control module is in addition to power module, data memory module and interface circuit using the microprocessor as core component；
The NB-IoT modules, pass through operator's base station access to communication networks and server communication；The NB-IoT modules are work
Make in the case where authorizing frequency spectrum, support the Internet of Things communication module group of 3GPP communications protocol；The NB-IoT modules include SIM control electricity
Road, RTC control circuits, power-supplying circuit；
Using the microprocessor as core component, the microprocessor is connected the gateway with multiple standard Extensible interfaces,
One or more communication networks can be connected；The microprocessor is in a manner of bus by bus level change-over circuit with respectively connecing
Mouth is connected；The microprocessor is by the reception or transmission of the complete paired data of interface, and the microprocessor is according to receiving
Data difference, data are parsed and encapsulated, in main control module complete target communication network communication protocol encapsulation
Afterwards, the data for encapsulating completion are communicated by mobile operator base stations and server from NB-IoT modules or is sent to other
Objective network；
Multiple communication modules of the interface module access form with the NB-IoT modules under the control of the microprocessor
Internal communication network；The internal communication network is using the microprocessor as core, and the communication module is in the microprocessor
Under control, can independently with NB-IoT module two-way communications；The multiple communication module also may be used under the control of the microprocessor
Mutually to be communicated.
2. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that the interface module
In each interface can be extended based on EBI, connect the communication module；By described between the communication module
Internal communication network forms mesh network, and the mesh network is the token-ring network based on bus, is being physically total
Cable architecture, logically ring-type；According to current Interface connection bus, there is provided multiple EBIs, one of interface connect
Main website of the controller as the token bus network is met, remaining each interface connects an aggregation node of external network
As the host computer control Ad hoc, while also serve as a slave station of the token bus network；Defined in the main website
Communications protocol, the communication of network and the transmitting-receiving of data are controlled, and data are sent into the bus control unit to gateway by interface,
The parsing of agreement is completed, again data are carried out with the encapsulation of target protocol in the application layer of gateway, is sent to target port.
3. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that the gateway provides
Multiple standards interface, it can connect including Zigbee, WiFi, Bluetooth, LoRa radio sensing network, and PLC, RS485,
The network of any one and the above in RS232, CAN industrial network, the data in the network are sent out by NB-IoT modules
Deliver to server.
4. the Internet of Things Multifunctional gateway according to claim 2 based on NB-IoT, it is characterised in that in the gateway
The MANET of interface connection is multihop network, the unique network aggregation node for the MANET connected on interface,
Main frame is defined as, other are slave；The main frame is the address designator of every slave one byte of distribution in network, and right
The addition of equipment and exiting is managed；The slave described in communication process sends data to the main frame, and the main frame is by number
Sent according to by interface to the intra-gateway；The LoRa networks of the gateway interface connection can be with wirelessly penetrating in the gateway
Frequency chip forms multi channel Star Network, receive the message that each node is sent send to intra-gateway to data at
Reason.
5. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that the master control mould
Block carries integrated multiple bus interface, low-power consumption STM32F series monolithics as embeded processor, and NB- is connected by serial ports
IoT modules.
6. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that the bus level
Change-over circuit connects the main control module, is attached after level conversion with extended serial port circuit, RTC clock circuit；It is described
Extended serial port circuit connects asynchronism transceiver by the microprocessor spi bus interface and expands 4 road serial line interfaces, connects
485 interface circuits；Using serial ports in the microprocessor connect one be integrated with CAN interface controller from processor,
For connecting CAN interface circuit, and connect asynchronism transceiver and expand 232 interfaces.
7. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that 485 interface
Plate is connected with the interface circuit of main control module 485, and use is anti-lightning strike, supports the single supply of multinode isolation cake core
ADM2587, and the chip is controlled by 485 interface circuits on the main control module；The CAN interface plate and the main control module
CAN interface circuit connects, and CAN controller connects with CAN transceiver, and wherein CAN transceiver is controlled by the master control
CAN interface circuit in module；Two stages of circuit docking port is equipped with before each passage to be protected；Pass through interface board, user
Independently interface can be selected to access according to the network in current environment.
8. the Internet of Things Multifunctional gateway according to claim 1 based on NB-IoT, it is characterised in that the power module
It is respectively each several part power supply using 16V, 5V Power Management Design.
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