Multi-channel data gateway circuit

Abstract

The utility model provides a multichannel data gateway circuit, comprising a control chip U2, and a transceiver U8, a transceiver U22, a communication chip U19, a communication chip U21 and a WiFi chip U7 which are connected with the control chip U2. Compared with the prior art, the multichannel data gateway circuit has the characteristics of multiple functions and relatively simple structure, and is relatively good in practicability and economical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of data gateways, in particular to a multi-channel data gateway circuit. Background Art

[0002] Multi-channel data gateway plays a vital role in IoT technology. It can realize the interconnection between multiple devices and networks and provide efficient and reliable data transmission and processing capabilities. The following is a detailed introduction to multi-channel data gateway:

[0003] 1. Overview of Multi-Channel Data Gateway

[0004] A multi-channel data gateway is a device that connects different devices and networks through multiple channels at the same time. It has multiple communication methods, such as Wi-Fi, Bluetooth, ZigBee, LoRa, etc., and can communicate with different devices at the same time. The design and implementation of a multi-channel data gateway needs to consider multiple aspects such as the selection of communication protocols, processing power and storage capacity, security and stability.

[0005] 2. Characteristics of Multi-channel Data Gateway

[0006] 1. Multi-channel communication: Multi-channel data gateways can simultaneously receive and send data in multiple frequency bands, enabling parallel communication between multiple devices and networks, and improving communication efficiency and reliability.

[0007] 2. Diversity of communication protocols: The multi-channel data gateway supports multiple communication protocols, such as LoRaWAN, Wi-Fi, Bluetooth, etc. It can communicate with various smart devices to achieve interconnection of devices.

[0008] 3. High-performance processing capabilities: Multi-channel data gateways need to have strong processing and storage capabilities to meet the data processing needs when multiple devices communicate simultaneously.

[0009] 4. Security and stability: The multi-channel data gateway needs to support security mechanisms such as encrypted communication and identity authentication to protect the security of devices and data. At the same time, it also needs to have high stability to ensure that there will be no failures during long-term operation.

[0010] 3. Application Scenarios of Multi-channel Data Gateway

[0011] 1. Smart home: In the smart home system, the multi-channel data gateway can connect various smart devices, such as smart light bulbs, smart door locks, smart air conditioners, etc., to achieve centralized management and control of the devices.

[0012] 2. Industrial Internet of Things: In industrial Internet of Things applications, multi-channel data gateways can connect various sensors and actuators to achieve remote monitoring and control of equipment, thereby improving production efficiency and management level.

[0013] 3. Smart City: In the construction of smart cities, multi-channel data gateways can connect various urban infrastructure and public service facilities, such as traffic lights, environmental monitoring stations, public safety systems, etc., to realize intelligent management and services of the city.

[0014] 4. Development Trend of Multi-channel Data Gateway

[0015] With the continuous development and popularization of IoT technology, the application scenarios of multi-channel data gateways will become more and more extensive. In the future, multi-channel data gateways will pay more attention to the interconnection and collaboration between devices, and provide more intelligent and personalized services. At the same time, with the development of new technologies such as 5G and cloud computing, the performance and stability of multi-channel data gateways will be further improved, providing more solid support for IoT applications.

[0016] To this end, the utility model attempts to provide a novel multi-channel data gateway circuit to promote the development of multi-channel data gateways. Summary of the invention

[0017] The utility model provides a multi-channel data gateway circuit, which, compared with the prior art, has the characteristics of multi-function, relatively simple structure, good practicability and economy.

[0018] The embodiment of this specification discloses a multi-channel data gateway circuit, including a control chip U2, and a transceiver U8, a transceiver U22, a communication chip U19, a communication chip U21 and a WiFi chip U7 connected to the control chip U2;

[0019] Among them, pin 1 and pin 4 of the transceiver U8 are respectively connected to pin 30 and pin 29 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U8 are connected to pin 28 of the control chip U2, pin 1 and pin 4 of the transceiver U22 are respectively connected to pin 17 and pin 16 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U22 are connected to pin 26 of the control chip U2, and pin 11 of the communication chip U19 is connected to pin 42 of the control chip U2 through resistor R44. Pin 12 of the communication chip U19 is connected to pin 43 of the control chip U2 through resistor R43, pin 11 of the communication chip U21 is connected to pin 51 of the control chip U2 through resistor R46, pin 12 of the communication chip U19 is connected to pin 52 of the control chip U2 through resistor R45, and pin 2, pin 5, pin 11, pin 12, pin 14 and pin 15 of the WiFi chip U7 are respectively connected to pin 25, pin 24, pin 21, pin 23, pin 20 and pin 22 of the control chip U2 in a one-to-one correspondence.

[0020] In some embodiments of the present specification, the multi-channel data gateway circuit further includes a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C17, a capacitor C66, a TVS diode D3, a TVS diode D4, a TVS diode D6 and a connector P1, one end of the resistor R17 is connected to one end of the resistor R19 and then connected to an external voltage terminal VCC_3V3, the other end of the resistor R17 is connected to pin 4 of the transceiver U8, the other end of the resistor R19 is connected to pin 1 of the transceiver U8, and pin 8 of the transceiver U8. After being connected to the grounded capacitor C17 and the grounded capacitor C66, the external voltage terminal VCC_3V3 is connected. The pin 7 of the transceiver U8 is connected to the grounded resistor R20, one end of the resistor R21, the grounded TVS diode D3, one end of the TVS diode D4 and the pin 2 of the connector P1. The pin 6 of the transceiver U8 is connected to one end of the resistor R22, the other end of the resistor R21, the grounded TVS diode D6, the other end of the TVS diode D4 and the pin 1 of the connector P1. The other end of the resistor R22 is connected to the external voltage terminal VCC_3V3.

[0021] In some embodiments of the present specification, the multi-channel data gateway circuit further includes a resistor R51, a resistor R50, a resistor R48, a resistor R47, a resistor R49, a capacitor C61, a capacitor C65, a capacitor C63, a capacitor C64, a TVS diode D13, a TVS diode D14, a TVS diode D15 and a connector CN2, one end of the resistor R51 is connected to one end of the resistor R50 and then connected to an external voltage terminal VCC_3V3, the other end of the resistor R51 is connected to pin 4 of the transceiver U22, the other end of the resistor R50 is connected to pin 1 of the transceiver U22, and pin 8 of the transceiver U22 is connected to the grounded capacitor C61 and the grounded capacitor After C65 is connected, the external voltage terminal VCC_3V3 is connected. The pin 7 of the transceiver U22 is connected to the grounded resistor R48, one end of the resistor R47, the grounded TVS diode D13, one end of the TVS diode D14 and the pin 3 of the connector CN2. The pin 6 of the transceiver U22 is connected to one end of the resistor R49, the other end of the resistor R47, the grounded TVS diode D15, the other end of the TVS diode D14 and the pin 2 of the connector CN2. The other end of the resistor R49 is connected to the external voltage terminal VCC_3V3. After the pin 44 of the connector CN2 is connected to the grounded capacitor C63 and the grounded capacitor C64, the external voltage terminal DC_12V is connected.

[0022] In some embodiments of the present specification, the multi-channel data gateway circuit also includes capacitor C42, capacitor C40, capacitor C41, capacitor C43, capacitor C38, capacitor C39 and connector DSUB2, the two ends of the capacitor C42 are respectively connected to pin 4 and pin 5 of the communication chip U19, pin 2 of the communication chip U19 is connected to the grounded capacitor C40, the two ends of the capacitor C41 are respectively connected to pin 1 and pin 3 of the communication chip U19, pin 6 of the communication chip U19 is connected to the grounded capacitor C43, pin 16 of the communication chip U19 is connected to the grounded capacitor C38 and the grounded capacitor C39 and then connected to the external voltage terminal VCC_3V3, and pin 14 and pin 13 of the communication chip U19 are respectively connected to pin 3 and pin 2 of the connector DSUB2 in a one-to-one correspondence.

[0023] In some embodiments of the present specification, the multi-channel data gateway circuit further includes capacitor C59, capacitor C57, capacitor C58, capacitor C60, capacitor C55, capacitor C56, capacitor C44, capacitor C45, capacitor C53, capacitor C52, resistor R38, resistor R39, resistor R40, MOS tube Q2, transistor Q3 and connector CN1, the two ends of the capacitor C59 are respectively connected to pin 4 and pin 5 of the communication chip U21, the pin 2 of the communication chip U21 is connected to the grounded capacitor C57, the two ends of the capacitor C58 are respectively connected to pin 1 and pin 3 of the communication chip U21, the pin 6 of the communication chip U21 is connected to the grounded capacitor C60, the pin 16 of the communication chip U21 is connected to the grounded capacitor C55 and the grounded capacitor C 56 is connected to the external voltage terminal VCC_3V3, the pins 13 and 14 of the communication chip U21 are respectively connected to the pins 2 and 3 of the connector CN1 in a one-to-one correspondence, the pin 4 of the connector CN1 is connected to the grounded capacitor C45, the grounded capacitor C44 and the source of the MOS tube Q2, the gate of the MOS tube Q2 is connected to one end of the resistor R38 and the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is connected to the grounded resistor R40 and one end of the resistor R39, the other end of the resistor R39 is connected to the pin 33 of the control chip U2, the drain of the MOS tube Q2 is connected to the other end of the resistor R38, the grounded capacitor C53 and the grounded capacitor C52, and then connected to the external voltage terminal DC_12V.

[0024] In some embodiments of the present specification, the multi-channel data gateway circuit also includes a power interface DC1, a diode D11, a diode D7, a capacitor C51, a capacitor C37, a capacitor C25, a capacitor C26, a capacitor C19, a capacitor C54, a capacitor C21, a capacitor C22, a capacitor C50, a capacitor C49, a capacitor C46, ​​a capacitor C47, a capacitor C48, a resistor R42, a resistor R7, a resistor R25, a resistor R23, a resistor R26, a resistor R24, a resistor R27, an inductor U10, a linear regulator U20, a buck regulator U12 and a light-emitting diode U6, and the power supply Pin 1 of the interface DC1 is connected to the grounded capacitor C51 and the positive electrode of the diode D11, the negative electrode of the diode D11 is connected to one end of the resistor R7, the positive electrode of the capacitor C37, the grounded capacitor C25, one end of the resistor R23 and the pin 7 of the buck regulator U12, and then connected to the external voltage terminal DC_12V, the other end of the resistor R7 is connected to the positive electrode of the light-emitting diode U6, the negative electrode of the light-emitting diode U6 is grounded, the negative electrode of the capacitor C37 is grounded, the pin 6 of the buck regulator U12 is grounded through the resistor R25, and the pin 7 of the buck regulator U12 is connected to the positive electrode of the light-emitting diode U6, the negative electrode of the light-emitting diode U6 is grounded, the negative electrode of the capacitor C37 is grounded, the pin 6 of the buck regulator U12 is grounded through the resistor R25, and the pin 7 of the buck regulator U12 is connected to the positive electrode of the light-emitting diode U6. Pin 3 is connected to one end of the resistor R26, the other end of the resistor R26 is connected to one end of the capacitor C26, the other end of the capacitor C26 is connected to pin 9 of the buck regulator U12 and then grounded, pin 8 of the buck regulator U12 is connected to one end of the capacitor C19, pin 1 of the buck regulator U12 is connected to the other end of the capacitor C19, the cathode of the diode D7 and one end of the inductor U10, the anode of the diode D7 is grounded, the other end of the inductor U10 is connected to the anode of the capacitor C54, the grounded capacitor C21, and the grounded capacitor C22 , one end of the resistor R24 ​​is connected to one end of the resistor R42, the negative electrode of the capacitor C54 is grounded, the pin 4 of the buck regulator U12 is connected to the other end of the resistor R24 ​​and the grounded resistor R27, the other end of the resistor R42 is connected to the grounded capacitor C50, the grounded capacitor C49, and pins 1 and 3 of the linear regulator U20, the pin 4 of the linear regulator U20 is connected to the grounded capacitor C46, ​​and the pin 5 of the linear regulator U20 is connected to the grounded capacitor C48 and the grounded capacitor C47 to serve as the voltage terminal VCC_3V3.

[0025] In some embodiments of the present specification, the multi-channel data gateway circuit also includes a connector P2, a resistor R36, a resistor R37, a resistor R32, a resistor R33, an optocoupler U14 and an optocoupler U17, wherein pin 2 of the connector P2 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to pin 1 of the optocoupler U17, pin 4 of the optocoupler U17 is connected to one end of the resistor R37 and pin 15 of the control chip U2, the other end of the resistor R37 is externally connected to a voltage terminal VCC_3V3, pin 3 of the connector P2 is connected to one end of the resistor R33, the other end of the resistor R33 is connected to pin 1 of the optocoupler U14, pin 4 of the optocoupler U14 is connected to one end of the resistor R32 and pin 14 of the control chip U2, and the other end of the resistor R32 is externally connected to a voltage terminal VCC_3V3.

[0026] In some embodiments of the present specification, the multi-channel data gateway circuit also includes a radio frequency coaxial connector RF1, a resistor R8, a resistor R10, a resistor R11, a resistor R12, a capacitor C6 and a capacitor C7, pin 5 of the radio frequency coaxial connector RF1 is connected to pin 29 of the WiFi chip U7, one end of the resistor R8 is externally connected to a voltage terminal VCC_3V3, the other end of the resistor R8 is connected to the grounded capacitor C6, the grounded capacitor C7 and pin 1 of the WiFi chip U7 and then connected to an external voltage terminal VCC_WIFI, pin 6 of the WiFi chip U7 is connected to one end of the resistor R10, pin 8 of the WiFi chip U7 is connected to one end of the resistor R11, the other end of the resistor R10 and the other end of the resistor R11 are connected to one end of the resistor R12, and the other end of the resistor R12 is connected to pin 14 of the WiFi chip U7.

[0027] In some embodiments of the present specification, the multi-channel data gateway circuit also includes capacitor C1, capacitor C4, capacitor C2, capacitor C5, capacitor C3, crystal oscillator X1, crystal oscillator X2, resistor R1, resistor R3, resistor R4, light-emitting diode U1 and light-emitting diode U3, the positive electrode of the light-emitting diode U1 is connected to the positive electrode of the light-emitting diode U3 and then connected to the external voltage terminal VCC_3V3, the negative electrode of the light-emitting diode U1 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the pin 34 of the control chip U2, the negative electrode of the light-emitting diode U3 is connected to one end of the resistor R4, and the resistor The other end of R4 is connected to pin 35 of the control chip U2, one end of the crystal oscillator X1 is connected to the grounded capacitor C1 and pin 3 of the control chip U2, the other end of the crystal oscillator X1 is connected to the grounded capacitor C4 and pin 4 of the control chip U2, one end of the crystal oscillator X2 is connected to the grounded capacitor C2 and pin 5 of the control chip U2, the other end of the crystal oscillator X2 is connected to the grounded capacitor C5 and pin 6 of the control chip U2, one end of the resistor R1 is connected to the grounded capacitor C3 and pin 7 of the control chip U2, and the other end of the resistor R1 is connected to the external voltage terminal VCC_MCU.

[0028] In some embodiments of the present specification, the multi-channel data gateway circuit further includes a resistor R9, a resistor R15, a resistor R16, a resistor R13, a resistor R14, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, an inductor L1, a buzzer B1, a transistor Q1, a connector H1, an electrostatic diode D1 and an electrostatic diode D2, one end of the resistor R9 is externally connected to a voltage terminal VCC_3V3, the other end of the resistor R9 is connected to the grounded capacitor C8, the grounded capacitor C9, the grounded capacitor C10, the grounded capacitor C11, the grounded capacitor C12, the grounded capacitor C13, the grounded capacitor C14 and one end of the inductor L1 and then connected to an external voltage terminal VCC_MCU, the other end of the inductor L1 is connected to the grounded capacitor C15 and then connected to an external voltage terminal VCC_VCCA, the resistor R15 One end of the connector H1 is connected to pin 58 of the control chip U2, the other end of the resistor R15 is connected to one end of the resistor R16 and the base of the transistor Q1, the emitter of the transistor Q1 is connected to the other end of the resistor R16 and then grounded, the collector of the transistor Q1 is connected to one end of the buzzer B1, and the other end of the buzzer B1 is externally connected to the voltage terminal VCC_3V3, pins 1 and 5 of the connector H1 are respectively connected to pins 49 and 46 of the control chip U2 in a one-to-one correspondence, pin 2 of the connector H1 is connected to the grounded electrostatic diode D1 and one end of the resistor R13, the other end of the resistor R13 is connected to pin 54 of the control chip U2, pin 6 of the connector H1 is connected to the grounded electrostatic diode D2 and one end of the resistor R14, and the other end of the resistor R14 is connected to pin 53 of the control chip U2.

[0029] The embodiments of this specification can at least achieve the following beneficial effects:

[0030] A new type of multi-channel data gateway circuit is formed by the control chip U2, and the transceiver U8, transceiver U22, communication chip U19, communication chip U21 and WiFi chip U7 connected to the control chip U2. Compared with the existing technology, it has the characteristics of multi-function and relatively simple circuit structure, and has good practicality and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1Schematic diagram of the control chip U2 involved in some embodiments of the present invention.

[0033] Figure 2 Schematic diagram of the WiFi chip U7 involved in some embodiments of the present invention.

[0034] Figure 3 Schematic diagram of the transceiver U8 involved in some embodiments of the present invention.

[0035] Figure 4 Schematic diagram of the transceiver U22 involved in some embodiments of the present invention.

[0036] Figure 5 It is a schematic diagram of the communication chip U19 involved in some embodiments of the present invention.

[0037] Figure 6 Schematic diagram of the communication chip U21 involved in some embodiments of the present invention.

[0038] Figure 7 Schematic diagram of the connector CN1 involved in some embodiments of the present invention.

[0039] Figure 8 Schematic diagram of the buck regulator U12 involved in some embodiments of the present invention.

[0040] Fig. 9 Schematic diagram of a linear regulator U20 involved in some embodiments of the present invention.

[0041] Fig.10 Schematic diagram of the connector P2 involved in some embodiments of the present invention.

[0042] Fig.11 Schematic diagram of the crystal oscillator X1 involved in some embodiments of the present invention.

[0043] Fig.12 It is a schematic diagram of the connector H1 involved in some embodiments of the present invention. DETAILED DESCRIPTION

[0044] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0045] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0047] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0048] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0050] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the embodiment of this specification discloses a multi-channel data gateway circuit, including a control chip U2, and a transceiver U8, a transceiver U22, a communication chip U19, a communication chip U21 and a WiFi chip U7 connected to the control chip U2;

[0052] Among them, pin 1 and pin 4 of the transceiver U8 are respectively connected to pin 30 and pin 29 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U8 are connected to pin 28 of the control chip U2, pin 1 and pin 4 of the transceiver U22 are respectively connected to pin 17 and pin 16 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U22 are connected to pin 26 of the control chip U2, and pin 11 of the communication chip U19 is connected to pin 42 of the control chip U2 through resistor R44. Pin 12 of the communication chip U19 is connected to pin 43 of the control chip U2 through resistor R43, pin 11 of the communication chip U21 is connected to pin 51 of the control chip U2 through resistor R46, pin 12 of the communication chip U19 is connected to pin 52 of the control chip U2 through resistor R45, and pin 2, pin 5, pin 11, pin 12, pin 14 and pin 15 of the WiFi chip U7 are respectively connected to pin 25, pin 24, pin 21, pin 23, pin 20 and pin 22 of the control chip U2 in a one-to-one correspondence.

[0053] In some embodiments of this specification, Figure 1 and Figure 3As shown, the multi-channel data gateway circuit also includes a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C17, a capacitor C66, a TVS diode D3, a TVS diode D4, a TVS diode D6 and a connector P1, one end of the resistor R17 is connected to one end of the resistor R19 and then connected to an external voltage terminal VCC_3V3, the other end of the resistor R17 is connected to pin 4 of the transceiver U8, the other end of the resistor R19 is connected to pin 1 of the transceiver U8, and pin 8 of the transceiver U8 is connected to the ground. The capacitor C17 and the grounded capacitor C66 are connected to the external voltage terminal VCC_3V3, the pin 7 of the transceiver U8 is connected to the grounded resistor R20, one end of the resistor R21, the grounded TVS diode D3, one end of the TVS diode D4 and the pin 2 of the connector P1, the pin 6 of the transceiver U8 is connected to one end of the resistor R22, the other end of the resistor R21, the grounded TVS diode D6, the other end of the TVS diode D4 and the pin 1 of the connector P1, and the other end of the resistor R22 is connected to the external voltage terminal VCC_3V3.

[0054] In some embodiments of this specification, Figure 1 and Figure 4 As shown, the multi-channel data gateway circuit also includes a resistor R51, a resistor R50, a resistor R48, a resistor R47, a resistor R49, a capacitor C61, a capacitor C65, a capacitor C63, a capacitor C64, a TVS diode D13, a TVS diode D14, a TVS diode D15 and a connector CN2, one end of the resistor R51 is connected to one end of the resistor R50 and then connected to an external voltage terminal VCC_3V3, the other end of the resistor R51 is connected to pin 4 of the transceiver U22, the other end of the resistor R50 is connected to pin 1 of the transceiver U22, and pin 8 of the transceiver U22 is connected to the grounded capacitor C61 and the grounded capacitor C65. The external voltage terminal VCC_3V3 is connected, and the pin 7 of the transceiver U22 is connected to the grounded resistor R48, one end of the resistor R47, the grounded TVS diode D13, one end of the TVS diode D14 and the pin 3 of the connector CN2. The pin 6 of the transceiver U22 is connected to one end of the resistor R49, the other end of the resistor R47, the grounded TVS diode D15, the other end of the TVS diode D14 and the pin 2 of the connector CN2. The other end of the resistor R49 is connected to the external voltage terminal VCC_3V3. The pin 44 of the connector CN2 is connected to the grounded capacitor C63 and the grounded capacitor C64 and then to the external voltage terminal DC_12V.

[0055] In some embodiments of this specification, Figure 1 and Figure 5As shown, the multi-channel data gateway circuit also includes capacitor C42, capacitor C40, capacitor C41, capacitor C43, capacitor C38, capacitor C39 and connector DSUB2, the two ends of the capacitor C42 are respectively connected to pin 4 and pin 5 of the communication chip U19, pin 2 of the communication chip U19 is connected to the grounded capacitor C40, the two ends of the capacitor C41 are respectively connected to pin 1 and pin 3 of the communication chip U19, pin 6 of the communication chip U19 is connected to the grounded capacitor C43, pin 16 of the communication chip U19 is connected to the grounded capacitor C38 and the grounded capacitor C39 and then connected to the external voltage terminal VCC_3V3, and pin 14 and pin 13 of the communication chip U19 are respectively connected to pin 3 and pin 2 of the connector DSUB2 in a one-to-one correspondence.

[0056] In some embodiments of this specification, Figure 1 , Figure 6 and Figure 7 As shown, the multi-channel data gateway circuit also includes capacitor C59, capacitor C57, capacitor C58, capacitor C60, capacitor C55, capacitor C56, capacitor C44, capacitor C45, capacitor C53, capacitor C52, resistor R38, resistor R39, resistor R40, MOS tube Q2, transistor Q3 and connector CN1, the two ends of the capacitor C59 are respectively connected to pin 4 and pin 5 of the communication chip U21, the pin 2 of the communication chip U21 is connected to the grounded capacitor C57, the two ends of the capacitor C58 are respectively connected to pin 1 and pin 3 of the communication chip U21, the pin 6 of the communication chip U21 is connected to the grounded capacitor C60, and the pin 16 of the communication chip U21 is connected to the grounded capacitor C55 and the grounded capacitor C56. The external voltage terminal VCC_3V3 is connected to the rear external voltage terminal VCC_3V3, the pins 13 and 14 of the communication chip U21 are respectively connected to the pins 2 and 3 of the connector CN1 in a one-to-one correspondence, the pin 4 of the connector CN1 is connected to the grounded capacitor C45, the grounded capacitor C44 and the source of the MOS tube Q2, the gate of the MOS tube Q2 is connected to one end of the resistor R38 and the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is connected to the grounded resistor R40 and one end of the resistor R39, the other end of the resistor R39 is connected to the pin 33 of the control chip U2, the drain of the MOS tube Q2 is connected to the other end of the resistor R38, the grounded capacitor C53 and the grounded capacitor C52, and the external voltage terminal DC_12V is connected to the rear external voltage terminal.

[0057] In some embodiments of this specification, Figure 8 and Fig. 9As shown, the multi-channel data gateway circuit also includes a power interface DC1, a diode D11, a diode D7, a capacitor C51, a capacitor C37, a capacitor C25, a capacitor C26, a capacitor C19, a capacitor C54, a capacitor C21, a capacitor C22, a capacitor C50, a capacitor C49, a capacitor C46, ​​a capacitor C47, a capacitor C48, a resistor R42, a resistor R7, a resistor R25, a resistor R23, a resistor R26, a resistor R24, a resistor R27, an inductor U10, a linear regulator U20, a buck regulator U12 and a light emitting diode U6. The inductor of the power interface DC1 Pin 1 is connected to the grounded capacitor C51 and the positive electrode of the diode D11, the negative electrode of the diode D11 is connected to one end of the resistor R7, the positive electrode of the capacitor C37, the grounded capacitor C25, one end of the resistor R23 and the pin 7 of the buck regulator U12, and then connected to the external voltage terminal DC_12V, the other end of the resistor R7 is connected to the positive electrode of the light-emitting diode U6, the negative electrode of the light-emitting diode U6 is grounded, the negative electrode of the capacitor C37 is grounded, the pin 6 of the buck regulator U12 is grounded through the resistor R25, and the pin 3 of the buck regulator U12 is connected to the One end of the resistor R26 is connected, the other end of the resistor R26 is connected to one end of the capacitor C26, the other end of the capacitor C26 is connected to pin 9 of the buck regulator U12 and then grounded, the pin 8 of the buck regulator U12 is connected to one end of the capacitor C19, the pin 1 of the buck regulator U12 is connected to the other end of the capacitor C19, the cathode of the diode D7 and one end of the inductor U10, the anode of the diode D7 is grounded, the other end of the inductor U10 is connected to the anode of the capacitor C54, the grounded capacitor C21, the grounded capacitor C22, the inductor U10, and the cathode of the diode D7. One end of the resistor R24 ​​is connected to one end of the resistor R42, the negative electrode of the capacitor C54 is grounded, the pin 4 of the buck regulator U12 is connected to the other end of the resistor R24 ​​and the grounded resistor R27, the other end of the resistor R42 is connected to the grounded capacitor C50, the grounded capacitor C49, and pins 1 and 3 of the linear regulator U20, the pin 4 of the linear regulator U20 is connected to the grounded capacitor C46, ​​and the pin 5 of the linear regulator U20 is connected to the grounded capacitor C48 and the grounded capacitor C47 to serve as the voltage terminal VCC_3V3.

[0058] In some embodiments of this specification, Fig.10As shown, the multi-channel data gateway circuit also includes a connector P2, a resistor R36, a resistor R37, a resistor R32, a resistor R33, an optocoupler U14 and an optocoupler U17, wherein pin 2 of the connector P2 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to pin 1 of the optocoupler U17, pin 4 of the optocoupler U17 is connected to one end of the resistor R37 and pin 15 of the control chip U2, the other end of the resistor R37 is externally connected to a voltage terminal VCC_3V3, pin 3 of the connector P2 is connected to one end of the resistor R33, the other end of the resistor R33 is connected to pin 1 of the optocoupler U14, pin 4 of the optocoupler U14 is connected to one end of the resistor R32 and pin 14 of the control chip U2, and the other end of the resistor R32 is externally connected to a voltage terminal VCC_3V3.

[0059] In some embodiments of this specification, Figure 1 and Figure 2 As shown, the multi-channel data gateway circuit also includes a radio frequency coaxial connector RF1, a resistor R8, a resistor R10, a resistor R11, a resistor R12, a capacitor C6 and a capacitor C7. Pin 5 of the radio frequency coaxial connector RF1 is connected to pin 29 of the WiFi chip U7, one end of the resistor R8 is externally connected to a voltage terminal VCC_3V3, the other end of the resistor R8 is connected to the grounded capacitor C6, the grounded capacitor C7 and pin 1 of the WiFi chip U7 and then to an external voltage terminal VCC_WIFI, pin 6 of the WiFi chip U7 is connected to one end of the resistor R10, pin 8 of the WiFi chip U7 is connected to one end of the resistor R11, the other end of the resistor R10 and the other end of the resistor R11 are connected to one end of the resistor R12, and the other end of the resistor R12 is connected to pin 14 of the WiFi chip U7.

[0060] In some embodiments of this specification, Figure 1 and Fig.11As shown, the multi-channel data gateway circuit also includes a capacitor C1, a capacitor C4, a capacitor C2, a capacitor C5, a capacitor C3, a crystal oscillator X1, a crystal oscillator X2, a resistor R1, a resistor R3, a resistor R4, a light emitting diode U1 and a light emitting diode U3, wherein the positive electrode of the light emitting diode U1 is connected to the positive electrode of the light emitting diode U3 and then connected to the external voltage terminal VCC_3V3, the negative electrode of the light emitting diode U1 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the pin 34 of the control chip U2, the negative electrode of the light emitting diode U3 is connected to one end of the resistor R4, the other end of the resistor R4 ... The first end of the crystal oscillator X1 is connected to the grounded capacitor C1 and the pin 35 of the control chip U2, the second end of the crystal oscillator X1 is connected to the grounded capacitor C4 and the pin 4 of the control chip U2, the first end of the crystal oscillator X2 is connected to the grounded capacitor C2 and the pin 5 of the control chip U2, the second end of the crystal oscillator X2 is connected to the grounded capacitor C5 and the pin 6 of the control chip U2, the first end of the resistor R1 is connected to the grounded capacitor C3 and the pin 7 of the control chip U2, and the other end of the resistor R1 is connected to the external voltage terminal VCC_MCU.

[0061] In some embodiments of this specification, Figure 1 and Fig.12As shown, the multi-channel data gateway circuit also includes a resistor R9, a resistor R15, a resistor R16, a resistor R13, a resistor R14, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, an inductor L1, a buzzer B1, a transistor Q1, a connector H1, an electrostatic diode D1 and an electrostatic diode D2, one end of the resistor R9 is externally connected to a voltage terminal VCC_3V3, the other end of the resistor R9 is connected to the grounded capacitor C8, the grounded capacitor C9, the grounded capacitor C10, the grounded capacitor C11, the grounded capacitor C12, the grounded capacitor C13, the grounded capacitor C14 and one end of the inductor L1 and then connected to an external voltage terminal VCC_MCU, the other end of the inductor L1 is connected to the grounded capacitor C15 and then connected to an external voltage terminal VCC_VCCA, one end of the resistor R15 is connected to the grounded capacitor C15 and then connected to an external voltage terminal VCC_VCCA, The pin 58 of the control chip U2 is connected, the other end of the resistor R15 is connected to one end of the resistor R16 and the base of the transistor Q1, the emitter of the transistor Q1 is connected to the other end of the resistor R16 and then grounded, the collector of the transistor Q1 is connected to one end of the buzzer B1, and the other end of the buzzer B1 is externally connected to the voltage terminal VCC_3V3, the pin 1 and pin 5 of the connector H1 are respectively connected to the pin 49 and pin 46 of the control chip U2 in a one-to-one correspondence, the pin 2 of the connector H1 is connected to the grounded electrostatic diode D1 and one end of the resistor R13, the other end of the resistor R13 is connected to the pin 54 of the control chip U2, the pin 6 of the connector H1 is connected to the grounded electrostatic diode D2 and one end of the resistor R14, and the other end of the resistor R14 is connected to the pin 53 of the control chip U2.

[0062] In summary, connectors P1 and CN2 are both 485 bus interfaces, which are the external 485 interfaces of the multi-channel gateway and are used for 485 protocol communication between the gateway and external devices.

[0063] Connector DSUB2 is a 9-pin RS232 communication serial port interface, which is used for communication between the gateway and the host computer. It is mostly used for the host computer to set parameters and debug the system of the gateway.

[0064] Connector CN1 is a universal interface used by the gateway to the outside world, including 12V power input and RS232 serial port communication.

[0065] Connector P2 is the interface for the gateway to receive external signals. After receiving the external signal, optocouplers (U14, U17) are used to optically isolate the external signal from the onboard signal. The isolated signal input (SIGNAL0, SIGNAL1) is then input into pin14 and pin15 of the microcontroller U2.

[0066] The purpose of the RF coaxial connector RF1 is to lead the WiFi signal of RW001 (U7) from the RF port (IPEX port) of U17 to RF1 through the "IPEX to SMA cable", and use RF1 to convert the RF signal of U7 from the IPEX interface to the SMA interface. Compared with IPEX, SMA is more reliable and more universal.

[0067] Connector H1 is a pure connector (without signal conversion function), which is used as the program download port and program debugging port of the microcontroller (U2). One end of it is connected to the pin of the JTAG debugging port of the microcontroller, and the other end is connected to the debugger / emulator / burner of the microcontroller program.

[0068] The multi-channel data gateway circuit can realize the following functions:

[0069] (1) This gateway is used to connect the debugging port of large equipment with a tablet computer. It has WiFi hotspot and TCP server functions, and has one RS232 interface and two RS485 interfaces. The last RS485 channel is used to connect to the accelerometer pre-installed on the device body, which can output data. This gateway is placed on the device under test. The accelerometer can be used to test whether the vibration amplitude of the device itself (such as elevators and other vehicles or amusement park equipment) meets national requirements during operation, or whether the acceleration and deceleration of the device under test when starting and stopping is within the specification range.

[0070] (2) The gateway itself acts as a Wi-Fi hotspot and supports a DHCP server, allowing mobile phones or tablets to connect to the hotspot and form the same local area network.

[0071] (3) As a TCP server, the gateway starts multiple socket listeners and waits for connections from the host computer. After the connection is established, multiple data channels and corresponding socket transparent communications are established.

[0072] Functional description:

[0073] Data channel: 1 RS232 serial port, 2 RS485 serial ports, one reserved for PWM pulse width measurement.

[0074] Network communication: WIFI network, support hotspot establishment.

[0075] Human-computer interaction: 4.3-inch touch screen display (accessed through connector CN1) allows setting system parameters or monitoring system operation.

[0076] Supports bidirectional transparent transmission based on network sockets, and supports up to 4 socket connections at the same time.

[0077] It has hardware reset function (after the upgrade is completed, the hardware reset function can be performed).

[0078] Supports RTOS operating system and adopts time slice round-robin scheduling.

[0079] With BootLoader, the application can be updated through the serial port.

[0080] It has one DC power output interface, 12VDC@2A.

[0081] The above embodiments describe multiple specific implementations of the present invention, but those skilled in the art should understand that various changes or modifications can be made to these implementations without departing from the principles and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A multi-channel data gateway circuit, characterized in that: It includes a control chip U2, and a transceiver U8, a transceiver U22, a communication chip U19, a communication chip U21 and a WiFi chip U7 connected to the control chip U2; Among them, pin 1 and pin 4 of the transceiver U8 are respectively connected to pin 30 and pin 29 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U8 are connected to pin 28 of the control chip U2, pin 1 and pin 4 of the transceiver U22 are respectively connected to pin 17 and pin 16 of the control chip U2 in a one-to-one correspondence, pin 2 and pin 3 of the transceiver U22 are connected to pin 26 of the control chip U2, and pin 11 of the communication chip U19 is connected to pin 42 of the control chip U2 through resistor R44. Pin 12 of the communication chip U19 is connected to pin 43 of the control chip U2 through resistor R43, pin 11 of the communication chip U21 is connected to pin 51 of the control chip U2 through resistor R46, pin 12 of the communication chip U19 is connected to pin 52 of the control chip U2 through resistor R45, and pin 2, pin 5, pin 11, pin 12, pin 14 and pin 15 of the WiFi chip U7 are respectively connected to pin 25, pin 24, pin 21, pin 23, pin 20 and pin 22 of the control chip U2 in a one-to-one correspondence.

2. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a capacitor C17, a capacitor C66, a TVS diode D3, a TVS diode D4, a TVS diode D6 and a connector P1. One end of the resistor R17 is connected to one end of the resistor R19 and then connected to an external voltage terminal VCC_3V3. The other end of the resistor R17 is connected to pin 4 of the transceiver U8. The other end of the resistor R19 is connected to pin 1 of the transceiver U8. Pin 8 of the transceiver U8 is connected to the capacitor C17 connected to ground. After being connected to the grounded capacitor C66, the external voltage terminal VCC_3V3 is connected. The pin 7 of the transceiver U8 is connected to the grounded resistor R20, one end of the resistor R21, the grounded TVS diode D3, one end of the TVS diode D4 and the pin 2 of the connector P1. The pin 6 of the transceiver U8 is connected to one end of the resistor R22, the other end of the resistor R21, the grounded TVS diode D6, the other end of the TVS diode D4 and the pin 1 of the connector P1. The other end of the resistor R22 is connected to the external voltage terminal VCC_3V3.

3. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes a resistor R51, a resistor R50, a resistor R48, a resistor R47, a resistor R49, a capacitor C61, a capacitor C65, a capacitor C63, a capacitor C64, a TVS diode D13, a TVS diode D14, a TVS diode D15 and a connector CN2. One end of the resistor R51 is connected to one end of the resistor R50 and then connected to an external voltage terminal VCC_3V3. The other end of the resistor R51 is connected to pin 4 of the transceiver U22. The other end of the resistor R50 is connected to pin 1 of the transceiver U22. Pin 8 of the transceiver U22 is connected to the grounded capacitor C61 and the grounded capacitor C65 and then connected to an external voltage terminal VCC_3V3. Terminal VCC_3V3, pin 7 of the transceiver U22 is connected to the grounded resistor R48, one end of the resistor R47, the grounded TVS diode D13, one end of the TVS diode D14 and pin 3 of the connector CN2, pin 6 of the transceiver U22 is connected to one end of the resistor R49, the other end of the resistor R47, the grounded TVS diode D15, the other end of the TVS diode D14 and pin 2 of the connector CN2, the other end of the resistor R49 is externally connected to the voltage terminal VCC_3V3, and pin 44 of the connector CN2 is connected to the grounded capacitor C63 and the grounded capacitor C64 and then connected to the external voltage terminal DC_12V.

4. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes capacitor C42, capacitor C40, capacitor C41, capacitor C43, capacitor C38, capacitor C39 and connector DSUB2, the two ends of the capacitor C42 are respectively connected to pin 4 and pin 5 of the communication chip U19, pin 2 of the communication chip U19 is connected to the grounded capacitor C40, the two ends of the capacitor C41 are respectively connected to pin 1 and pin 3 of the communication chip U19, pin 6 of the communication chip U19 is connected to the grounded capacitor C43, pin 16 of the communication chip U19 is connected to the grounded capacitor C38 and the grounded capacitor C39 and then connected to the external voltage terminal VCC_3V3, and pin 14 and pin 13 of the communication chip U19 are respectively connected to pin 3 and pin 2 of the connector DSUB2 in a one-to-one correspondence.

5. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes capacitor C59, capacitor C57, capacitor C58, capacitor C60, capacitor C55, capacitor C56, capacitor C44, capacitor C45, capacitor C53, capacitor C52, resistor R38, resistor R39, resistor R40, MOS tube Q2, transistor Q3 and connector CN1, the two ends of the capacitor C59 are respectively connected to pin 4 and pin 5 of the communication chip U21, the pin 2 of the communication chip U21 is connected to the grounded capacitor C57, the two ends of the capacitor C58 are respectively connected to pin 1 and pin 3 of the communication chip U21, the pin 6 of the communication chip U21 is connected to the grounded capacitor C60, the pin 16 of the communication chip U21 is connected to the grounded capacitor C55 and the grounded capacitor C56, and then connected to the external voltage terminal VCC_3V3, pins 13 and 14 of the communication chip U21 are respectively connected to pins 2 and 3 of the connector CN1 in a one-to-one correspondence, pin 4 of the connector CN1 is connected to the grounded capacitor C45, the grounded capacitor C44 and the source of the MOS tube Q2, the gate of the MOS tube Q2 is connected to one end of the resistor R38 and the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is connected to the grounded resistor R40 and one end of the resistor R39, the other end of the resistor R39 is connected to pin 33 of the control chip U2, the drain of the MOS tube Q2 is connected to the other end of the resistor R38, the grounded capacitor C53 and the grounded capacitor C52, and then connected to the external voltage terminal DC_12V.

6. The multi-channel data gateway circuit according to claim 1, characterized in that: The device also includes a power interface DC1, a diode D11, a diode D7, a capacitor C51, a capacitor C37, a capacitor C25, a capacitor C26, a capacitor C19, a capacitor C54, a capacitor C21, a capacitor C22, a capacitor C50, a capacitor C49, a capacitor C46, ​​a capacitor C47, a capacitor C48, a resistor R42, a resistor R7, a resistor R25, a resistor R23, a resistor R26, a resistor R24, a resistor R27, an inductor U10, a linear regulator U20, a buck regulator U12 and a light-emitting diode U6. Pin 1 of the power interface DC1 is connected to the grounded pin of the inductor. The capacitor C51 is connected to the positive electrode of the diode D11, the negative electrode of the diode D11 is connected to one end of the resistor R7, the positive electrode of the capacitor C37, the grounded capacitor C25, one end of the resistor R23 and the pin 7 of the buck regulator U12, and then connected to the external voltage terminal DC_12V, the other end of the resistor R7 is connected to the positive electrode of the light emitting diode U6, the negative electrode of the light emitting diode U6 is grounded, the negative electrode of the capacitor C37 is grounded, the pin 6 of the buck regulator U12 is grounded through the resistor R25, and the pin 3 of the buck regulator U12 is connected to the positive electrode of the resistor R26. One end of the step-down regulator U12 is connected, the other end of the resistor R26 is connected to one end of the capacitor C26, the other end of the capacitor C26 is connected to pin 9 of the step-down regulator U12 and then grounded, the pin 8 of the step-down regulator U12 is connected to one end of the capacitor C19, the pin 1 of the step-down regulator U12 is connected to the other end of the capacitor C19, the cathode of the diode D7 and one end of the inductor U10, the anode of the diode D7 is grounded, the other end of the inductor U10 is connected to the anode of the capacitor C54, the grounded capacitor C21, the grounded capacitor C22, the resistor R2 4 is connected to one end of the resistor R42, the negative electrode of the capacitor C54 is grounded, the pin 4 of the buck regulator U12 is connected to the other end of the resistor R24 ​​and the grounded resistor R27, the other end of the resistor R42 is connected to the grounded capacitor C50, the grounded capacitor C49, and pins 1 and 3 of the linear regulator U20, the pin 4 of the linear regulator U20 is connected to the grounded capacitor C46, ​​and the pin 5 of the linear regulator U20 is connected to the grounded capacitor C48 and the grounded capacitor C47 to serve as the voltage terminal VCC_3V3.

7. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes a connector P2, a resistor R36, a resistor R37, a resistor R32, a resistor R33, an optocoupler U14 and an optocoupler U17, wherein pin 2 of the connector P2 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to pin 1 of the optocoupler U17, pin 4 of the optocoupler U17 is connected to one end of the resistor R37 and pin 15 of the control chip U2, the other end of the resistor R37 is externally connected to a voltage terminal VCC_3V3, pin 3 of the connector P2 is connected to one end of the resistor R33, the other end of the resistor R33 is connected to pin 1 of the optocoupler U14, pin 4 of the optocoupler U14 is connected to one end of the resistor R32 and pin 14 of the control chip U2, and the other end of the resistor R32 is externally connected to a voltage terminal VCC_3V3.

8. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes a radio frequency coaxial connector RF1, a resistor R8, a resistor R10, a resistor R11, a resistor R12, a capacitor C6 and a capacitor C7. Pin 5 of the radio frequency coaxial connector RF1 is connected to pin 29 of the WiFi chip U7. One end of the resistor R8 is connected to an external voltage terminal VCC_3V3. The other end of the resistor R8 is connected to the grounded capacitor C6, the grounded capacitor C7 and pin 1 of the WiFi chip U7 and then to an external voltage terminal VCC_WIFI. Pin 6 of the WiFi chip U7 is connected to one end of the resistor R10. Pin 8 of the WiFi chip U7 is connected to one end of the resistor R11. The other end of the resistor R10 and the other end of the resistor R11 are connected to one end of the resistor R12. The other end of the resistor R12 is connected to pin 14 of the WiFi chip U7.

9. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes capacitor C1, capacitor C4, capacitor C2, capacitor C5, capacitor C3, crystal oscillator X1, crystal oscillator X2, resistor R1, resistor R3, resistor R4, light emitting diode U1 and light emitting diode U3, the positive electrode of the light emitting diode U1 is connected to the positive electrode of the light emitting diode U3 and then connected to the external voltage terminal VCC_3V3, the negative electrode of the light emitting diode U1 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the pin 34 of the control chip U2, the negative electrode of the light emitting diode U3 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the control chip U2. The crystal oscillator X1 is connected to the grounded capacitor C1 and the pin 35 of the control chip U2, one end of the crystal oscillator X1 is connected to the grounded capacitor C1 and the pin 3 of the control chip U2, the other end of the crystal oscillator X1 is connected to the grounded capacitor C4 and the pin 4 of the control chip U2, one end of the crystal oscillator X2 is connected to the grounded capacitor C2 and the pin 5 of the control chip U2, the other end of the crystal oscillator X2 is connected to the grounded capacitor C5 and the pin 6 of the control chip U2, one end of the resistor R1 is connected to the grounded capacitor C3 and the pin 7 of the control chip U2, and the other end of the resistor R1 is connected to the external voltage terminal VCC_MCU.

10. The multi-channel data gateway circuit according to claim 1, characterized in that: It also includes a resistor R9, a resistor R15, a resistor R16, a resistor R13, a resistor R14, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, an inductor L1, a buzzer B1, a transistor Q1, a connector H1, an electrostatic diode D1 and an electrostatic diode D2. One end of the resistor R9 is externally connected to a voltage terminal VCC_3V3, the other end of the resistor R9 is connected to the grounded capacitor C8, the grounded capacitor C9, the grounded capacitor C10, the grounded capacitor C11, the grounded capacitor C12, the grounded capacitor C13, the grounded capacitor C14 and one end of the inductor L1 and then connected to an external voltage terminal VCC_MCU, the other end of the inductor L1 is connected to the grounded capacitor C15 and then connected to an external voltage terminal VCC_VCCA, one end of the resistor R15 is connected to the control chip U 2, the other end of the resistor R15 is connected to one end of the resistor R16 and the base of the transistor Q1, the emitter of the transistor Q1 is connected to the other end of the resistor R16 and then grounded, the collector of the transistor Q1 is connected to one end of the buzzer B1, and the other end of the buzzer B1 is externally connected to the voltage terminal VCC_3V3, the pins 1 and 5 of the connector H1 are respectively connected to the pins 49 and 46 of the control chip U2 in a one-to-one correspondence, the pin 2 of the connector H1 is connected to the grounded electrostatic diode D1 and one end of the resistor R13, the other end of the resistor R13 is connected to the pin 54 of the control chip U2, the pin 6 of the connector H1 is connected to the grounded electrostatic diode D2 and one end of the resistor R14, and the other end of the resistor R14 is connected to the pin 53 of the control chip U2.

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