CN211720754U - Low-cost gateway of narrowband thing networking - Google Patents
Low-cost gateway of narrowband thing networking Download PDFInfo
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- CN211720754U CN211720754U CN202020675497.8U CN202020675497U CN211720754U CN 211720754 U CN211720754 U CN 211720754U CN 202020675497 U CN202020675497 U CN 202020675497U CN 211720754 U CN211720754 U CN 211720754U
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Abstract
The embodiment of the application discloses a low-cost gateway of a narrowband Internet of things. The technical scheme that this application embodiment provided increases high performance narrowband radio frequency transceiver through low-cost, high performance multicore MCU, builds multicore MCU and radio frequency transceiver to provide abundant communication interface and business interface through the processing board, make the gateway can satisfy multiple business demand, realize the wireless data transmission of small capacity, low data volume, short distance, little concurrency, satisfy the gateway and transmit data low-cost requirement at closely, make things convenient for the popularization and application of narrowband thing networking.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a low-cost gateway of a narrowband Internet of things.
Background
At present, the technology of the internet of things is applied to building a communication network in various fields in life. Generally, in the internet of things systems in these fields, various wireless networking methods are generally used to perform networking within a certain area, and then several data concentrators or intelligent gateways are arranged at appropriate positions. However, in some internet of things systems such as smart meter reading and smart cities, the number of terminals required to be accessed is relatively large, and the coverage distance of the network is relatively wide. The internet of things system adopting ZigBee, WiFi networking or LoRa networking needs to be additionally provided with relay equipment for data jumping transmission, and the cost of system setting investment is relatively high.
The narrowband Internet of things (NB-IoT) is an important branch of the world wide Internet. The NB-IoT is constructed in a cellular network, only consumes about 180kHz bandwidth, and can be directly deployed in a GSM network, a UMTS network or an LTE network so as to reduce the deployment cost and realize smooth upgrading.
When the gateway of the narrow-band Internet of things transmission layer transmits data in a short distance, the cost of the general gateway is high, and the popularization and the application of the narrow-band Internet of things are not facilitated.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a low-cost gateway of a narrow-band Internet of things, which meets the low-cost requirement of the gateway on near-distance data transmission and facilitates the popularization and application of the narrow-band Internet of things.
In a first aspect, an embodiment of the present application provides a low-cost gateway of a narrowband internet of things, including a power module, a processing board, a multi-core module, and an antenna unit, where the power module is configured to provide a power supply for the gateway, where:
the processing board is electrically connected with the multi-core module, is used for carrying out multi-mode communication with the multi-core module and provides a communication interface for accessing the gateway;
the multi-core module comprises a multi-core MCU and a radio frequency transceiver, wherein the multi-core MCU is electrically connected with the processing board, and the radio frequency transceiver is electrically connected between the multi-core MCU and the antenna unit and is used for sending radio frequency sending data output by the multi-core MCU through the antenna unit and sending radio frequency receiving data received by the antenna unit to the multi-core MCU;
the antenna unit is used for receiving and sending radio frequency receiving data to the radio frequency transceiver and sending radio frequency sending data output by the radio frequency transceiver to the outside.
Further, the processing board is provided with uNB wireless communication interface, LTE communication interface, WiFi communication interface, RS232/RS485 communication interface, eMMC communication interface, one or more communication interfaces in the self-adaptation net gape.
Further, the LTE communication interface comprises a 4G-LTE module, the 4G-LTE module is electrically connected with the UART interface and the USB interface of the processing board, and the 4G-LTE module provides an SIM card module and a 4G antenna port.
Further, the adaptive network port comprises a network port PHY and a 4-port switch, the network port PHY is electrically connected between the RMII interface of the processing board and the 4-port switch, and the 4-port switch provides an RJ45 interface.
Furthermore, a USB hub is electrically connected to the USB interface of the processing board, and the USB hub provides one or more interfaces selected from a USB socket, a USB to UART interface, and a USB to SD interface.
Further, the processing board is connected with a 4GB eMMC memory through the eMMC communication interface.
Furthermore, the processing board is connected with a WiFi communication chip through the WiFi communication interface, and the WiFi communication chip is connected with a WiFi antenna.
Furthermore, the radio frequency transceivers are provided with a plurality of SPI interfaces which are respectively connected with the multi-core MCU, and the radio frequency transceivers are respectively connected with one antenna unit.
Further, the radio frequency transceiver is a narrowband wireless radio frequency transceiver.
Further, the processing board includes an iMX6 series A7-ARM processor.
According to the embodiment of the application, the multi-core MCU and the radio frequency transceiver are built through the low-cost and high-performance multi-core MCU and high-performance narrow-band radio frequency transceiver, rich communication interfaces and service interfaces are provided through the processing board, the gateway can meet various service requirements, wireless data transmission with small capacity, low data volume, short distance and small concurrency is achieved, the low-cost requirement of the gateway on short-distance data transmission is met, and the popularization and application of the narrow-band Internet of things are facilitated.
Drawings
Fig. 1 is a block diagram of a low-cost gateway of a narrowband internet of things provided in an embodiment of the present application;
FIG. 2 is a schematic circuit diagram of a multi-core module according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a processing board and a multi-core module according to an embodiment of the present disclosure.
Reference numerals: 1. processing the plate; 2. a multi-core module; 3. a power supply module; 4. an antenna unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings.
In the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Fig. 1 shows a structural block diagram of a low-cost gateway of a narrowband internet of things provided in an embodiment of the present application. As shown in fig. 1, the low-cost gateway of the narrowband internet of things includes a power module 3, a processing board 1, a multi-core module 2, and an antenna unit 4.
The power module 3 is electrically connected to the processing board 1, and is configured to provide power to the power module (processing board 1) of the gateway. Further, the power module 3 may be connected to a power supply through a power adapter (for example, 220V commercial power is converted into 12V dc power), and corresponding voltage conversion chips (for example, 12V to 5V chips, 5V to 3.3V chips, etc.) and a voltage stabilizing circuit are set according to the power supply voltage requirements of each power module in the gateway.
Further, the processing board 1 is communicatively connected to the multi-core module 2, and is configured to perform multi-mode communication with the multi-core module 2, and provide a communication interface for accessing a gateway for a local external device or process.
Fig. 2 is a schematic circuit connection diagram of the multi-core module 2 provided in this embodiment, and as shown in fig. 2, the multi-core module 2 provided in this embodiment includes a multi-core MCU and a radio frequency transceiver, the multi-core MCU is electrically connected to the processing board 1, and the radio frequency transceiver is electrically connected between the multi-core MCU and the antenna unit 4, and is configured to send out radio frequency transmission data output by the multi-core MCU through the antenna unit 4, and send radio frequency reception data received by the antenna unit 4 to the multi-core MCU. The antenna unit 4 is used for receiving and sending radio frequency receiving data to the radio frequency transceiver, and sending out radio frequency sending data output by the radio frequency transceiver. The radio frequency transceiver is specifically a narrow-band wireless radio frequency transceiver.
Specifically, in the embodiments of the present application, a low-cost and high-performance multi-core MCU and a high-performance narrowband radio transceiver provided by ST (semiconductor express) corporation are used to implement small-capacity, low-data-volume, short-distance wireless data (radio frequency data) transmission, and a multi-core MCU collaborates with a wireless transmission protocol layer MAC layer and upper layer software, and implements functions of data on demand, multicast, broadcast, scheduling, packetization, and the like. Optionally, an external socket for connecting with each communication interface of the multi-core MCU may be provided, and the external socket is used for performing communication connection with the modules such as the processing board 1.
Optionally, a plurality of radio frequency transceivers may be arranged according to deployment requirements, and are respectively connected to the SPI interfaces of the multi-core MCU, and the radio frequency transceivers are each connected to one antenna unit 4. In this embodiment, two rf transceivers are provided for example, and are respectively connected to the SPI1 and the SPI2 of the multi-core MCU, and are connected to one antenna unit 4. Wherein the antenna unit 4 can select a directional antenna or an omnidirectional antenna according to actual deployment needs.
Fig. 3 is a schematic circuit connection diagram of the processing board 1 and the multi-core module 2 according to the embodiment of the present disclosure. As shown in fig. 3, the processing board 1 provided in this embodiment is built based on an NXP (enwispu) high-performance iMX6 series a7-ARM processor (CPU in fig. 3) and its peripheral circuits. The processing board 1 can realize multi-mode communication with the multi-core MCU and provide various control interfaces.
The control interface provided by the processing board 1 includes uNB wireless communication interface, LTE communication interface, WiFi communication interface, RS232/RS485 communication interface, eMMC communication interface, one or more communication interfaces in the adaptive network interface, and service interface, and a specific control interface can be set according to actual deployment requirements.
Specifically, the LTE communication interface includes a 4G-LTE module, the 4G-LTE module is electrically connected to the UART3 interface and the USB1 interface of the processing board 1, the 4G-LTE module provides a SIM card module and a 4G antenna port, the SIM card module can be inserted into the SIM card, and data communication is performed through the 4G antenna based on SIM card information. In other embodiments, 3G and/or 5G communication modules may be added according to actual requirements.
The self-adaptive network port comprises a network port PHY and a 4-port exchanger, wherein the network port PHY is electrically connected between the processing board 1 and the 4-port exchanger, and the 4-port exchanger is connected with an RJ45 interface to provide a network interface for external equipment which communicates based on a network communication protocol, so that the communication connection with the network card is realized.
Further, a USB HUB (USB HUB) is electrically connected to a USB interface (USB 2 interface in the figure) of the processing board 1, and the USB HUB can be used to provide one or more interfaces of a USB socket, a USB to UART interface, and a USB to SD interface according to actual deployment requirements, and the USB HUB is connected to an external device based on a USB communication protocol, wherein the USB to UART interface can be connected to a service signal based on RS232/RS485, and the USB to SD interface can be a network card connected to a storage device such as a TF card. The USB-to-UART interface can also be used for accessing a Bluetooth UART module (BT UART) and displaying the Bluetooth connection between the external equipment and the network card.
Further, the processing board 1 is connected to an eMMC memory (eMMC 4GB) of 4GB through an eMMC communication interface (SD 2 interface in the figure). The processing board 1 is connected with a WiFi communication chip through a WiFi communication interface (SD 1 interface in the figure), and the WiFi communication chip is connected with a WiFi antenna, and the gateway can perform WiFi communication connection with an external device through the WiFi communication chip.
The processing board 1 provided by the present embodiment is also electrically connected with a 1GB DDR3 SDRAM memory. Further, the UART4 interface of the multi-core module 2 is connected to an RS232 PHY interface, and the RS232 PHY interface can provide the debugging device with an RS232 interface communicatively connected to the multi-core module 2, and debug the multi-core module 2.
Above-mentioned, through low-cost, high performance multicore MCU high performance narrowband radio frequency transceiver, build multicore MCU and radio frequency transceiver to provide abundant communication interface and business interface through processing board 1, make the gateway can satisfy multiple business demand, realize the wireless data transmission of low capacity, low data volume, short distance, little concurrency, satisfy the gateway and transmit data low-cost requirement at closely, make things convenient for the popularization and application of narrowband thing networking. Meanwhile, the low-cost gateway can work in a TDD working mode, supports an FSK modulation mode, supports frequency ranges including 230MHz, 420MHz-440MHz and 470MHz-510MGz, has transmitting power not less than 15dBm, has receiver sensitivity better than-120 dBm, has 2 carrier numbers, can access more than 50 users, has transmission distance not less than 100m, controls the power consumption of the gateway within 10W, and can meet the low-cost requirement of the gateway on short-distance data transmission.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. The utility model provides a low-cost gateway of narrowband thing networking which characterized in that, includes power module (3), handles board (1), multicore module (2) and antenna element (4), power module (3) are used for providing the power for the gateway, wherein:
the processing board (1) is electrically connected with the multi-core module (2) and is used for carrying out multi-mode communication with the multi-core module (2) and providing a communication interface for accessing a gateway;
the multi-core module (2) comprises a multi-core MCU and a radio frequency transceiver, the multi-core MCU is electrically connected to the processing board (1), the radio frequency transceiver is electrically connected between the multi-core MCU and the antenna unit (4) and is used for sending radio frequency sending data output by the multi-core MCU through the antenna unit (4) and sending radio frequency receiving data received by the antenna unit (4) to the multi-core MCU;
the antenna unit (4) is used for receiving and transmitting radio frequency receiving data to the radio frequency transceiver and transmitting radio frequency transmitting data output by the radio frequency transceiver outwards.
2. A low-cost gateway of a narrowband internet of things according to claim 1, wherein the processing board (1) is provided with uNB wireless communication interface, LTE communication interface, WiFi communication interface, RS232/RS485 communication interface, eMMC communication interface, or one or more of adaptive network interface.
3. The low-cost gateway of the narrowband internet of things of claim 2, wherein the LTE communication interface comprises a 4G-LTE module, the 4G-LTE module is electrically connected to the UART interface and the USB interface of the processing board (1), and the 4G-LTE module provides a SIM card module and a 4G antenna port.
4. The low-cost gateway of the narrowband internet of things of claim 2, wherein the adaptive portal comprises a portal PHY and a 4-port switch, the portal PHY is electrically connected between the RMII interface of the processing board (1) and the 4-port switch, and the 4-port switch provides an RJ45 interface.
5. The low-cost gateway of the narrow-band internet of things of claim 2, wherein the USB interface of the processing board (1) is electrically connected with a USB hub, and the USB hub provides one or more of a USB socket, a USB-to-UART interface, and a USB-to-SD interface.
6. The low-cost gateway of the narrowband internet of things of claim 2, wherein the processing board (1) is connected with a 4GB eMMC memory through the eMMC communication interface.
7. The low-cost gateway of the narrowband internet of things of claim 2, wherein the processing board (1) is connected with a WiFi communication chip through the WiFi communication interface, and the WiFi communication chip is connected with a WiFi antenna.
8. The low-cost gateway of the narrowband internet of things of claim 2, wherein a plurality of radio frequency transceivers are provided and are respectively connected to the SPI interfaces of the multi-core MCU, and the radio frequency transceivers are respectively connected to one antenna unit (4).
9. A low-cost gateway of a narrowband internet of things according to any of claims 1-8, wherein the radio frequency transceiver is a narrowband wireless radio frequency transceiver.
10. A low-cost gateway of a narrowband Internet of things according to any of claims 1-8, characterized in that the processing board (1) comprises an iMX6 series A7-ARM processor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020675497.8U CN211720754U (en) | 2020-04-28 | 2020-04-28 | Low-cost gateway of narrowband thing networking |
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| CN202020675497.8U CN211720754U (en) | 2020-04-28 | 2020-04-28 | Low-cost gateway of narrowband thing networking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242527A (en) * | 2021-05-17 | 2021-08-10 | 张衡 | Communication system based on wireless somatosensory inertia measurement module |
| CN116138750A (en) * | 2022-12-26 | 2023-05-23 | 嘉兴华炳物联网科技有限公司 | A intelligent wrist-watch for human health monitoring |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242527A (en) * | 2021-05-17 | 2021-08-10 | 张衡 | Communication system based on wireless somatosensory inertia measurement module |
| CN116138750A (en) * | 2022-12-26 | 2023-05-23 | 嘉兴华炳物联网科技有限公司 | A intelligent wrist-watch for human health monitoring |
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