CN212305328U

CN212305328U - Multifunctional communication equipment for Internet of things

Info

Publication number: CN212305328U
Application number: CN202021533416.7U
Authority: CN
Inventors: 朱爱华
Original assignee: Shenzhen Xihongxin Technology Co ltd
Current assignee: Shenzhen Xihongxin Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-01-05
Anticipated expiration: 2030-07-29

Abstract

The utility model relates to a multifunctional communication equipment of the internet of things, which comprises a main control unit, a power supply module, a serial interface module, a switching value input module, a 4G module, a WIFI module, an NB module and an Ethernet module; the 4G module, the WIFI module, the NB module and the Ethernet module are integrated on one main control unit, meanwhile, the main control unit is provided with a serial interface module and a switching value input module which are used for connecting various Internet of things devices, and meanwhile, various communication modules are suitable for more applicable scenes; the multifunctional communication equipment for the Internet of things integrates various communication modes, and is the Internet of things communication equipment integrating various modes of a 4G network, an Ethernet, an NB-iot narrowband Internet of things, WIFI and a serial interface, and the multifunctional communication equipment for the Internet of things is flexible in selection. The application scene is extensive, convenient and practical, fully solves the problem of unsmooth communication under the complex environment, and is very practical.

Description

Multifunctional communication equipment for Internet of things

Technical Field

The utility model relates to a communication equipment technical field specifically is thing networking multifunctional communication equipment.

Background

The wireless communication module is widely applied to the fields of vehicle monitoring, remote control, remote measurement, small wireless network, wireless meter reading, access control system, cell paging, industrial data acquisition system, wireless tag, identity identification, non-contact RF smart card, small wireless data terminal, safety fire protection system, wireless remote control system, biological signal acquisition, hydrological weather monitoring, robot control, wireless 232 data communication, wireless 485/422 data communication, digital audio, digital image transmission and the like.

The communication module plays a significant role in the technology of the internet of things, and the existing wireless communication module can only use one communication mode generally and cannot adapt to the use scenes of various internet of things.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing thing networking multifunctional communication equipment, integrated multiple communication mode can be applicable to more use scenes.

The utility model discloses a thing networking multifunctional communication equipment, including the main control unit, the power module, serial interface module, switching value input module, the 4G module, the WIFI module, NB module and ethernet module, the power module passes through stabiliser and main control unit, the 4G module, the WIFI module, NB module and ethernet module are connected, switching value input module and main control unit opto-coupler connection, the 4G module, WIFI module and NB module all are connected with the main control unit through serial data bus, the ethernet module includes ethernet chip and the ethernet interface that the order is connected, the ethernet chip passes through serial peripheral interface and main control unit connection.

Further, the main control unit is an STM32 single chip microcomputer.

Furthermore, the power module comprises a first level shifter and a second level shifter, the input end of the first level shifter is connected with an external power supply, and the input pin of the first level shifter outputs a 4V direct-current power supply; the input end of the second level shifter is connected with the output end of the first level shifter, and the output end of the second level shifter outputs a 3.3V direct-current power supply; the input end of the first level shifter is provided with a protector and a filter circuit, and the output end of the first level shifter, the input end of the second level shifter and the output end of the second level shifter are provided with filter circuits.

Furthermore, the serial interface module comprises an RS232 transceiver chip, an RS232 interface, an RS485 transceiver chip and an RS485 interface, wherein receiving pins and sending pins at the input ends of the RS232 transceiver chip and the RS485 transceiver chip are respectively and correspondingly connected with data receiving pins and data sending pins of the STM32 singlechip; and the output ends of the RS232 transceiver chip and the RS485 transceiver chip are respectively connected with the RS232 interface and the RS485 interface.

Furthermore, the switching value input module includes 8 switching value input units, and each switching value input unit all includes an optical coupler, and the input of optical coupler is equipped with wave filter and protector, and the output of optical coupler is used for controlling the output of second level shifter with the break-make between the IO pin of STM32 singlechip.

Further, the 4G module comprises a 4G module with a model number of EC20, and a power input end of the 4G module is connected with an output end of the first level shifter; a data receiving and transmitting pin of the 4G module is connected with an IO pin of the STM32 singlechip through a third level shifter; and a USB interface circuit is arranged on the 4G module.

Furthermore, the WIFI module is an ESP-07S chip, a power input pin of the WIFI module is connected with an output end of the first level shifter, and a data receiving and transmitting pin of the WIFI module is connected with an IO pin of the STM32 single chip microcomputer.

Furthermore, the model of NB module is BC26, the power input end of NB module with the output of first level shifter is connected, the data receiving and dispatching pin of NB module with the IO pin of STM32 singlechip is connected, the NB module with 4G module communication connection.

Furthermore, the model of ethernet chip is W5500, the power input pin of ethernet chip with the output of second level shifter is connected, the ethernet chip with the IO pin of STM32 singlechip is connected.

The utility model has the advantages that: the utility model discloses a thing networking multifunctional communication equipment, through with 4G module, WIFI module, NB module and ethernet module integration on a main control unit, simultaneously, the main control unit be equipped with serial interface module and switching value input module and be used for connecting various thing networking equipment, multiple communication module is applicable to more suitable scenes simultaneously; the multifunctional communication equipment for the Internet of things integrates various communication modes, and is the Internet of things communication equipment integrating various modes of a 4G network, an Ethernet, an NB-iot narrowband Internet of things, WIFI and a serial interface, and the multifunctional communication equipment for the Internet of things is flexible in selection. The application scene is extensive, convenient and practical, fully solves the problem of unsmooth communication under the complex environment, and is very practical.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a circuit diagram of the main control unit of the present invention;

fig. 3 is a circuit diagram of the power module of the present invention;

fig. 4 is a circuit diagram of the switching value input module of the present invention;

fig. 5 is a circuit diagram of the serial interface module of the present invention;

fig. 6 is a circuit diagram of a 4G module according to the present invention;

fig. 7 is a circuit diagram of a third level shifter according to the present invention;

fig. 8 is a circuit diagram of the NB module of the present invention;

fig. 9 is a circuit diagram of a wifi module of the present invention;

fig. 10 is a circuit diagram of an ethernet module according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. As shown in fig. 1: the multifunctional communication equipment for the Internet of things comprises a main control unit, a power supply module, a serial interface module, a switching value input module, a 4G module U2A, a WIFI module U21, a NB module U20 and an Ethernet module, wherein the power supply module is connected with the main control unit, a 4G module U2A, a WIFI module U21, an NB module U20 and the Ethernet module through a voltage stabilizer, the switching value input module is in optical coupling connection with the main control unit, the 4G module U2A, the WIFI module U21 and the NB module U20 are all connected with the main control unit through a serial data bus (UART), the Ethernet module comprises an Ethernet chip U19 and an Ethernet interface E1 which are sequentially connected, the Ethernet chip U19 is connected with the main control unit through a Serial Peripheral Interface (SPI) and internally comprises various types of serial interfaces, various connection modes are provided for the equipment for the Internet of things, and the switching value input module provides more signal input and control modes, 4G module U2A, WIFI module U21, NB module U20 and ethernet module provide multiple networking methods.

The utility model discloses a thing networking multifunctional communication equipment, through with 4G module U2A, WIFI module U21, NB module U20 and ethernet module integration on a main control unit, simultaneously, the main control unit be equipped with serial interface module and switching value input module and be used for connecting various thing networking equipment, multiple communication module is applicable to more suitable scenes simultaneously; the multifunctional communication equipment for the Internet of things integrates various communication modes, and is the Internet of things communication equipment integrating various modes of a 4G network, an Ethernet, an NB-iot narrowband Internet of things, WIFI and a serial interface, and the multifunctional communication equipment for the Internet of things is flexible in selection. The application scene is extensive, convenient and practical, fully solves the problem of unsmooth communication under the complex environment, and is very practical.

As shown in fig. 2, in this embodiment, the main control unit is a minimum system of an STM32 single chip microcomputer U3, specifically, the model is STM32F103RET6, and the minimum system of the STM32 single chip microcomputer U3 includes a crystal oscillator clock circuit and a trigger switch in addition to the single chip microcomputer U3, thereby forming a minimum system of an STM32 single chip microcomputer U3.

As shown in fig. 3, in this embodiment, the power module includes a first level shifter and a second level shifter, where the first level shifter includes a DC-DC switching regulator with a model number of LMR14030SDDAR, an input terminal of the switching regulator is provided with a transient suppression diode for protecting the switching regulator, both an input terminal and an output terminal of the switching regulator are provided with a filter circuit for filtering noise, an input pin vin of the first level shifter is connected to an external DC power supply, an input range of the DC power supply is 9-30V, and an output of the DC power supply is 4V. The second level shifter comprises a fixed voltage stabilizer with the model of XC6214P332PR, an input end VIN of the fixed voltage stabilizer is connected with an output end of the first level shifting circuit, a 4V direct-current power supply is input, a 3.3V direct-current power supply is output, and an input end and an output end of the fixed voltage stabilizer are both provided with filter capacitors, so that the output level signal is more stable.

As shown in fig. 4, in this embodiment, the switching value input module includes 8 switching value input units, each switching value input unit is provided with an EL814S optical coupler, an input end of the optical coupler is provided with an RC filter circuit and a transient suppression diode, the filter can filter noise of an input signal, the transient suppression diode can effectively protect the optical coupler, an output end of the optical coupler is used to control on/off between an output end of the second level shifter and IO pins PC0-PC7 of the STM32 singlechip U3, a level signal input by the input end of the optical coupler is used to control the pins PC0-PC7 of the singlechip U3IO to receive a level of 3.3V or a level of 0 (ground), specifically, when a level signal input by the input end (DI1-DI 8) of the optical coupler cannot enable a controlled end (i.e. an output end) of the optical coupler to be connected, a level signal of 3.3V is directly input to a corresponding IO pin (PC0-PC7) of the STM 32U 3, the input signal of the pin is high level, otherwise, the 3.3V level signal and the IO pin of the STM32 singlechip U3 are directly grounded, so that the input signal of the pin is 0 level; due to the arrangement of the optical coupler, the level range of an input signal is no longer limited by the maximum acceptable range of the IO pin of the U3 of the STM32 single chip microcomputer, and the input signal can be directly connected with signal sources in various ranges to realize switching value signal input.

As shown in fig. 5, in this embodiment, the serial interface module includes an RS232 transceiver chip U5, an RS232 interface, an RS485 transceiver chip U7 and an RS485 interface, the RS232 transceiver chip U5 adopts SP3232EN, the RS485 transceiver chip U7 adopts SP485EN, a receiving pin R2IN and a transmitting lead-in T2OUT at an input end of the RS232 transceiver chip U5 are respectively connected with a serial data line pin PA10(TXD) and a serial data line pin PA11(RXD) of an STM32 single chip microcomputer U3, and a receiving pin RO and a transmitting pin DI at an input end of the RS485 transceiver chip U7 are respectively connected with a serial data line pin PA10(TXD) and a serial data line pin PA11(RXD) of an STM32 single chip microcomputer U3; the output ends of the RS232 transceiver chip U5 and the RS485 transceiver chip U7 are respectively connected with the RS232 interface and the RS485 interface, and standard RS232 and RS485 interfaces are adopted, so that redundant description is omitted.

As shown in fig. 6-7, in the present embodiment, the 4G module U2A includes a 4G module with a model number EC20, a power input end of the 4G module is connected to an output end of the first level shifter, and a power input of the 4G module is 4V; a data receiving and transmitting pin of the 4G module is connected with an IO pin of an STM32 singlechip U3 through a third level shifter; the 4G module is provided with a USB interface circuit, the third level shifter is a level shifter with the model of TXS0104EPWR, and the level values are different when electric signals are sent between the EC20 and the STM32 singlechip U3, so that the third level shifter is used for conversion, and normal instruction mutual transmission between the EC20 and the STM32 singlechip U3 is ensured; the EC20 sets the USB interface circuit to realize the USB mode of the 4G module U2A.

As shown in fig. 8, in this embodiment, the WIFI module U21 is an ESP-07S chip, and the operating voltage of the ESP-07S chip is 4V, so that the power input pin of the WIFI module U21 is connected to the output terminal of the first level shifter, and the data transceiving pins TX and RX of the WIFI module U21 are connected to the PA3(MCU RXD) and PA2(MCU TXD) pins of the STM32 monolithic computer U3, respectively, thereby achieving mutual instruction transmission between the STM32 monolithic computer U3 and the ESP-07S chip.

As shown in fig. 9, in this embodiment, the NB module U20 is of a model BC26, and the operating voltage of BC26 is 4V, so that the power input terminal of the NB module U20 is connected to the output terminal of the first level shifter, the data transceiving pins (RXD and TXD) of the NB module U20 are connected to the PA2(MCU _ TXD) and PA3(MCU _ RXD) pins of the STM32 single chip microcomputer U3, the RESET pin RESET of the NB module U20 is connected to the RESET pin of the 4G module U2A and then externally connected to the RESET enable signal PWR _ EN, and the RESET enable signal PWR _ EN is derived from the VDD4 pin of the STM 32U 3, so that the single chip microcomputer U3 is used to RESET the NB module U20 and the 4G module U2A; in addition, the DATA transmission pin SIM _ DATA, the reset pin SIM _ RST and the clock signal pin SIM _ CLK of the NB module U20 are connected with the DATA transmission pin USIM _ DATA, the reset pin USIM _ RST and the clock signal pin USIM _ CLK of the 4G module U2A in a common-ground corresponding mode, so that the NB-iot narrowband network is realized by means of the 4G mobile network.

As shown in fig. 10, in this embodiment, the model of the ethernet chip U19 is W5500, and the operating voltage of W5500 is 3.3V, so the power input pin of the ethernet chip U19 is connected to the output terminal of the second level shifter, the INTn, MOSi, MISO, SCLK, and SCSn of the ethernet chip U19 are respectively connected to the PA8, PB15, PB14, PB13, and PB12 pins of the STM32 monolithic computer U3, so as to implement mutual transmission of various data types required by ethernet, and the output pin of the ethernet chip U19 is connected to the standard ethernet interface E1, which is not described herein again.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. Thing networking multifunctional communication equipment, its characterized in that: including the master control unit, the power module, the serial interface module, switching value input module, the 4G module, the WIFI module, NB module and ethernet module, the power module passes through stabiliser and master control unit, the 4G module, the WIFI module, NB module and ethernet module are connected, switching value input module and master control unit opto-coupler connection, the 4G module, WIFI module and NB module all are connected with the master control unit through serial data bus, the ethernet module includes ethernet chip and the ethernet interface that connects gradually, the ethernet chip passes through serial peripheral interface and is connected with the master control unit.

2. The internet of things multifunctional communication device of claim 1, wherein: the main control unit is an STM32 single chip microcomputer.

3. The internet of things multifunctional communication device of claim 2, wherein: the power supply module comprises a first level shifter and a second level shifter, wherein the input end of the first level shifter is connected with an external power supply, and the input pin of the first level shifter outputs a 4V direct-current power supply; the input end of the second level shifter is connected with the output end of the first level shifter, and the output end of the second level shifter outputs a 3.3V direct-current power supply; the input end of the first level shifter is provided with a protector and a filter circuit, and the output end of the first level shifter, the input end of the second level shifter and the output end of the second level shifter are provided with filter circuits.

4. The internet of things multifunctional communication device of claim 2, wherein: the serial interface module comprises an RS232 transceiving chip, an RS232 interface, an RS485 transceiving chip and an RS485 interface, wherein receiving pins and sending pins at the input ends of the RS232 transceiving chip and the RS485 transceiving chip are respectively and correspondingly connected with data receiving pins and data sending pins of the STM32 single chip microcomputer; and the output ends of the RS232 transceiver chip and the RS485 transceiver chip are respectively connected with the RS232 interface and the RS485 interface.

5. The internet of things multifunctional communication device of claim 3, wherein: the switching value input module includes 8 switching value input units, and each switching value input unit all includes an optical coupler, and optical coupler's input is equipped with wave filter and protector, and optical coupler's output is used for controlling second level shifter's output with break-make between the IO pin of STM32 singlechip.

6. The internet of things multifunctional communication device of claim 3, wherein: the 4G module comprises a 4G module with the model number of EC20, and the power supply input end of the 4G module is connected with the output end of the first level shifter; a data receiving and transmitting pin of the 4G module is connected with an IO pin of the STM32 singlechip through a third level shifter; and a USB interface circuit is arranged on the 4G module.

7. The internet of things multifunctional communication device of claim 3, wherein: the WIFI module is an ESP-07S chip, a power input pin of the WIFI module is connected with the output end of the first level shifter, and a data receiving and transmitting pin of the WIFI module is connected with an IO pin of the STM32 single chip microcomputer.

8. The internet of things multifunctional communication device of claim 3, wherein: the model of NB module is BC26, the power input end of NB module with first level shifter's output is connected, the data receiving and dispatching pin of NB module with the IO pin of STM32 singlechip is connected, the NB module with the 4G module communication is connected.

9. The internet of things multifunctional communication device of claim 3, wherein: the model of ethernet chip is W5500, the power input pin of ethernet chip with second level shifter's output is connected, the ethernet chip with the IO pin of STM32 singlechip is connected.