Internet of Things gateway equipment compatible with multiple communication modes

Abstract

The utility model provides an Internet of Things gateway device compatible with multiple communication modes. The Internet of Things gateway device comprises a ZYNQ processor, and a storage module, a clock module, a UART debugging interface, an Ethernet module, a USB module, a wireless communication unit, a temperature sensor, an indicating lamp module, a GNSS module, an RS232 and RS485 serial port module and a power supply module which are electrically connected with the ZYNQ processor. Based on the definition of a standard MiniPCIe interface and the design of a standard MiniPCIe 4G communication module on the market, the gateway of the Internet of Things comprises a wireless communication device which supports NB-IoT, LoRa and 4G modes and is based on the MiniPCIe interface, the wireless communication unit in the gateway can be compatible with various communication modes, and the gateway has the advantages of being high in processing capacity, rich in interface, easy to develop, good in universality and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of internet of things communication technology, specifically a kind of compatible multi-communication mode's internet of things gateway equipment. BACKGROUND

[0002] With the development of internet of things technology and edge computing and other technologies and applications, the processor capability and integration capability of edge internet of things gateway equipment need to be relatively enhanced to meet the development of edge computing technology and the continuous enrichment of sensing, monitoring and computing and other edge applications.Therefore, edge internet of things gateway equipment has the trend of developing: powerful processing performance, integrated with multiple interfaces and communication methods and meeting the low-power consumption needs of edge devices.

[0003] At the same time, with the development of internet of things technology, the communication methods of edge devices deployed in different scenarios are numerous.Currently, there is a standard MiniPCIe wireless communication card for 4G, which makes 4G / LTE modules from different manufacturers compatible with the same slot interface, and most gateways integrate NB-IoT and LoRa modules on the gateway mainboard using surface mounting, pin welding and pin male and female seat methods.These methods use non-standard design interfaces, which causes the following problems in the gateway: wireless communication method is fixed, replacement of communication module causes high cost and long development cycle, integration, fixation and design of wireless communication module on the mainboard are prone to EMC problems and interference, etc.

[0004] Currently, there is a lack of a general, stable and standard device and method for changing wireless communication methods by replacing modules, and there is a lack of internet of things gateway equipment designed using the method that meets the development trend of edge computing. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide an internet of things gateway equipment compatible with multiple communication methods, which uses a ZYNQ embedded processor with powerful processing performance and interface capability, and the gateway function unit is rich, which can meet the development trend of the above-mentioned edge internet of things gateway.

[0006] To solve the above technical problems, the embodiments of the utility model provide the following technical solutions: an internet of things gateway equipment compatible with multiple communication methods, comprising a ZYNQ processor and a storage module, a clock module, a UART debugging interface, an Ethernet module, a USB module, a wireless communication unit, a temperature sensor, an indicator light module, a GNSS module, an RS232 and RS485 serial port module and a power module electrically connected to the ZYNQ processor.

[0007] The wireless communication unit comprises a MiniPCIe interface wireless communication card, a slot and a SIM card seat, and the interface of the wireless communication card is:

[0008] When the communication mode is 4G, the 4G MiniPCIe wireless communication card comprises a SIM card interface, a USB interface, an indicator light interface, a power interface and a RESET interface.

[0009] When the communication mode is NB-IoT, the NB-IoT MiniPCIe wireless communication card comprises a SIM card interface, a UART interface, an indicator light interface, a power interface and a RESET interface.

[0010] When the communication mode is LoRa, the LoRa MiniPCIe wireless communication card comprises a UART interface, an indicator light interface, a power interface, a RESET interface, 2-way control IO pins and 2-way state IO pins.

[0011] Preferably, the slot is compatible with any one of 4G, NB-IoT and LoRa MiniPCIe wireless communication cards.

[0012] Preferably, the Ethernet module is connected with a network camera or a router.

[0013] Preferably, the GNSS module has Beidou, GPS, GLONASS, GALILEO and SBAS multi-mode and multi-frequency positioning functions, is powered by a 3.3V provided by a mainboard and a backup battery, and has a UART data interface.

[0014] Preferably, the indicator light module is extended from an EMIO end of the ZYNQ processor to a PS end to expand 4-way indicator lights, wherein 1 way is a power indicator light, 1 way is a network online state indicator light, 1 way is a communication transceiver state indicator light and 1 way is a GNSS state indicator light.

[0015] Preferably, the storage module comprises a NAND Flash, a DDR3 and an SD card.

[0016] Preferably, the ZYNQ processor is of XC7Z010-CLG400C type.

[0017] Preferably, the USB module is a series connection of a USB PHY module and a USB HUB module, wherein an input end of the USB PHY module is connected with the ZYNQ processor, an output end of the USB PHY module is connected with the USB HUB module, and the USB HUB module is connected with a U disk and a wireless communication unit.

[0018] The above technical scheme of the utility model has the following beneficial effects:

[0019] The utility model solves the compatible function of wireless communication unit to different communication mode, and is based on the definition of standard MiniPCIe interface and the design of standard MiniPCIe 4G communication module on the market, and the internet of things gateway contains a wireless communication device based on MiniPCIe interface supporting NB-IoT, LoRa and 4G mode, that is, the wireless communication unit in the gateway can be compatible with multiple communication modes, and only the MiniPCIe communication card with corresponding function needs to be replaced to realize wireless communication, which has the characteristics of strong processing capacity, rich interface, simple development, good versatility and the like. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the system mainboard function module division and hardware connection schematic diagram provided by the utility model embodiment;

[0021] Figure 2 It is the interface schematic diagram of 4G MiniPCIe communication card;

[0022] Figure 3 It is the interface schematic diagram of NB-IoT MiniPCIe communication card designed according to the method described in the utility model embodiment;

[0023] Figure 4 It is the interface schematic diagram of LoRa MiniPCIe module designed according to the method described in the utility model embodiment;

[0024] Figure 5 It is the circuit diagram of mainboard MiniPCIe slot designed according to the method described in the utility model embodiment. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical schemes and advantages of the utility model clearer, the following will be described in detail in combination with the drawings and specific embodiments.

[0026] As Figure 1 Indicated, the utility model provides a kind of internet of things gateway equipment compatible with multiple communication modes, including ZYNQ processor and the storage module, clock module, UART debugging interface, Ethernet module, USB module, wireless communication unit, temperature sensor, indicating lamp module, GNSS module, RS232 and RS485 serial port module and power module electrically connected with ZYNQ processor, wherein:

[0027] Wireless communication unit contains a MiniPCIe interface wireless communication card, slot and SIM card holder, the interface of wireless communication card is:

[0028] When the communication mode is 4G, the 4G MiniPCIe wireless communication card contains a SIM card interface, a USB interface, a indicator light interface, a power interface and a RESET interface;

[0029] When the communication mode is NB-IoT, the NB-IoT MiniPCIe wireless communication card contains a SIM card interface, a UART interface, a indicator light interface, a power interface and a RESET interface;

[0030] When the communication mode is LoRa, the LoRa MiniPCIe wireless communication card contains a UART interface, a indicator light interface, a power interface, a RESET interface, 2-way control IO pins and 2-way state IO pins.

[0031] The ZYNQ processor is a processor chip of the XILINX 7 series, which is a heterogeneous multi-core architecture of ARM A9 dual-core+FPGA, has the characteristics of strong processing performance, rich logic and interface resources and low power consumption, and is suitable for application in an embedded edge terminal.

[0032] As shown in Figure 1 , the ZYNQ series processor model is XC7Z010-CLG400C.

[0033] The storage module contains a NAND Flash, a DDR3 and an SD card, wherein the NAND Flash is a starting medium of an operating system, and BOOT and image files of Linux are stored on the NAND Flash; the DDR3 is a memory, specifically, the DDR used in the embodiment is two pieces of 256MB storage; the SD card is a storage medium for service data, system backup and application, and the specific size is adjusted according to the application.

[0034] The gigabit Ethernet module can access the network camera or the router, and corresponds to the monitored business and the network connection application respectively; the GNSS module is used for positioning the position of the module, extending the mobile business, the GNSS module has the Beidou, GPS, GLONASS, GALILEO, SBAS multi-mode multi-frequency positioning function, is powered by the mainboard 3.3V and the standby battery, and the data interface is UART;The RS232 and RS485 modules are common industrial interfaces, are connected to the UART interface of the UARTLITE IP core of the PL end of the ZYNQ chip, and are used for accessing the sensor;The temperature sensor module is connected to the EMIO by adopting the W1-BUS protocol, and measures the gateway temperature;The indicator light module is used for state indication, and in the embodiment, four GPIOs are adopted for control indication, wherein one is a power indicator light, one is a network online state indicator light, one is a communication transceiver state indicator light and one is a GNSS indicator light;The power module supplies power for the mainboard multi-module.

[0035] Figure 1 The module on the right side is the wireless communication unit of the gateway, the 4G and NB-IoT communication cards can access the Internet, and the destination address for reporting and communication is the cloud platform;When the LoRa communication card is integrated in the Internet of Things gateway, the general role is a terminal, and the destination address for reporting and communication is a base station or a relay device;

[0036] The wireless communication unit is a communication module designed on the basis of a standard MiniPCIe interface, and by the pin function design of the utility model, the MiniPCIe slot can be compatible with any one of 4G, NB-IoT and LoRa MiniPCIe wireless communication cards;Specifically, the wireless communication unit physically comprises a MiniPCIe wireless communication card, a MiniPCIe slot and a SIM card seat.

[0037] See Figure 2 , Figure 2 It is the interface schematic diagram of the 4G MiniPCIe communication card described in the embodiment of the utility model, the standard interface of the common 4G MiniPCIe communication card on the market is shown in the figure, including 4 SIM card pins, a USB interface for communication with the mainboard, 1 indicator light pin, a power pin and a RESET pin;When communication is carried out in the 4G mode, a 4G SIM card is inserted into the SIM card seat.

[0038] See Figure 3 , Figure 3is the interface schematic diagram of the NB-IoT MiniPCIe communication card designed according to the method of the embodiment of the utility model, when the communication mode is NB-IoT, the NB-IoT MiniPCIe wireless communication card contains 4 SIM card interfaces, UART interface for communication with the mainboard, 1 pin of indicator light, power supply pin and RESET pin, when the communication mode is NB-IoT, NB-IoT mode Internet of Things SIM card is inserted into the SIM card seat.

[0039] See Figure 4 , Figure 4 is the interface schematic diagram of the LoRa MiniPCIe module designed according to the method of the embodiment of the utility model, when the communication mode is LoRa, the LoRa MiniPCIe wireless communication card contains UART interface for communication with the mainboard, indicator light interface, power supply interface, RESET interface, 2-way control IO pin M0 and M1 and 2-way state IO pin, when the LoRa communication mode is used, the SIM card seat is not inserted with a card.

[0040] The MiniPCIe slot pin definition of the embodiment of the utility model compatible with 4G, NB-IoT and LoRa three communication modes is seen Figure 5 , Figure 5 is the circuit diagram of the mainboard MiniPCIe slot designed according to the method of the embodiment of the utility model, the definition idea of the MiniPCIe slot pin is: first, referring to the pin definition of the standard MiniPCIe and the pin definition of the standard 4G MiniPCIe communication card on the market, the interface of the general 4G module is summarized, then, the remaining idle pins are used to design the UART communication interface of NB-IoT and LoRa and the 4 IO interfaces of LoRa, the pin definition capable of compatible with three communication cards is obtained, finally, according to the pin definition, the MiniPCIe communication card of NB-IoT and LoRa and the gateway mainboard are designed.

[0041] The general pins of three MiniPCIe communication modules are: pins 2, 24, 39, 41 and 52 are VCC pins, 3.3V power supply; pins 4, 9, 15, 18, 21, 26, 27, 29, 34, 35, 37, 40, 43 and 50 are GND pins, ground, wireless communication card, slot and mainboard common ground; pin 22 is a RESET pin, low level effective; pin 42 is an LED pin, controlled by the communication card to control a way of indicator light on the mainboard;

[0042] The general pins of 4G and NB-IoT MiniPCIe communication modules are: pins 8, 10, 12 and 14 are SIM card function pins,

[0043] The common pins of the NB-IoT and LoRa MiniPCIe communication module are: pins 17 and 19 are UART communication pins.

[0044] The unique pin definition of the 4G MiniPCIe communication module is: pins 36 and 38 are USB communication pins.

[0045] The unique pin definition of the LoRa MiniPCIe communication module is: pins 45, 47, 49 and 51 are IO pins, facilitating the control and output of the LoRa communication card and the development of the function of the LoRa communication card.

[0046] The pins of the NB-IoT and LoRa communication card except the defined pins are NC pins, and are all empty.

[0047] In conclusion, the utility model solves the compatible function of the wireless communication unit to different communication modes, and is based on the definition of the standard MiniPCIe interface and the design of the standard MiniPCIe 4G communication module on the market, and the Internet of Things gateway contains a wireless communication device supporting the NB-IoT, LoRa and 4G modes based on the MiniPCIe interface, that is, the wireless communication unit in the gateway can be compatible with multiple communication modes, and wireless communication only needs to replace the corresponding MiniPCIe communication card with the function, and has the characteristics of strong processing capacity, rich interface, simple development, good universality and the like.

[0048] The above is the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A multi-communication mode compatible Internet of Things gateway device, characterized by, The ZYNQ processor, a storage module, a clock module, a UART debugging interface, an Ethernet module, a USB module, a wireless communication unit, a temperature sensor, an indicator light module, a GNSS module, an RS232 and RS485 serial port module, and a power module are electrically connected to the ZYNQ processor. The wireless communication unit comprises a MiniPCIe interface wireless communication card, a slot, and a SIM card seat. When the communication mode is 4G, the 4G MiniPCIe wireless communication card comprises a SIM card interface, a USB interface, an indicator light interface, a power interface, and a RESET interface. When the communication mode is NB-IoT, the NB-IoT MiniPCIe wireless communication card comprises a SIM card interface, a UART interface, an indicator light interface, a power interface, and a RESET interface. When the communication mode is LoRa, the LoRa MiniPCIe wireless communication card comprises a UART interface, an indicator light interface, a power interface, a RESET interface, 2-way control IO pins, and 2-way state IO pins. 2.The multi-communication mode compatible Internet of Things gateway device of claim 1, wherein, The slot is compatible with any one of 4G, NB-IoT, and LoRa MiniPCIe wireless communication cards. 3.The multi-communication mode compatible Internet of Things gateway device of claim 1, wherein, The Ethernet module is connected to a network camera or a router. 4.The multi-communication mode compatible Internet of Things gateway device of claim 1, wherein, The GNSS module has Beidou, GPS, GLONASS, GALILEO, and SBAS multi-mode and multi-frequency positioning functions, is powered by a 3.3V main board and a backup battery, and has a UART data interface. 5.The multi-communication mode compatible IoT gateway device of claim 1, wherein, The indicator light module is extended from the EMIO end of the ZYNQ processor to the PS end to expand 4-way indicator lights, wherein 1 way is a power indicator light, 1 way is a network online status indicator light, 1 way is a communication transceiver status indicator light, and 1 way is a GNSS status indicator light. 6.The multi-communication mode compatible Internet of Things gateway device of claim 1, wherein, The storage module comprises a NAND Flash, a DDR3, and an SD card. 7.The multi-communication mode compatible IoT gateway device of claim 1, wherein, The ZYNQ processor is of the XC7Z010-CLG400C type. 8.The multi-communication mode compatible Internet of Things gateway device of claim 1, wherein, The USB module comprises a USB PHY module and a USB HUB module connected in series, wherein the input end of the USB PHY module is connected to the ZYNQ processor, the output end of the USB PHY module is connected to the USB HUB module, and the USB HUB module is connected to a U disk and the wireless communication unit.

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