CPE Internet of Things terminal circuit and 5G Internet of Things terminal device

Abstract

The utility model provides a CPE (Customer Premise Equipment) Internet of Things terminal circuit and 5G Internet of Things terminal equipment. The CPE Internet of Things terminal circuit comprises a terminal main body control circuit, a network port circuit and an interface serial port communication circuit, and a WIFI wireless communication circuit and an open source system module. The CPE Internet of Things terminal circuit integrates WAN / LAN port wired access, a 5G wireless communication access technology, a WIFI wireless access technology, an RS232 serial port Internet of Things data transmission technology and an R485 interface Internet of Things data transmission technology, so that the CPE Internet of Things terminal circuit has better compatibility, and the terminal also adopts an open source system module and is transplanted into a 5G control total unit. Software is compatible with multiple general protocols on the market, rapid deployment and rapid customization can be facilitated for clients, the deep market cultivation problem in various Internet of Things application fields is solved, customized development of the clients is facilitated, the development workload is small, and the working stability is good.

Description

Technical Field

[0001] The present disclosure relates to the field of Internet of Things terminal technology, and in particular to a CPE Internet of Things terminal circuit and a 5G Internet of Things terminal device. Background Art

[0002] CPE, or Customer Premises Equipment, is typically used for telephone or other services. Technically, almost any terminal device can be called CPE, and it may be owned by either the user or the provider. With the rapid development of IoT applications, wireless IoT terminal applications can address automated IoT application challenges across various industries.

[0003] Currently, some IoT terminals are implemented using MTK7628 or Ruiyi main control + 4G communication module. This is costly and has limited compatibility. At the same time, the development workload of network protocols and IoT transmission protocols is large and the stability is poor, which leads to major difficulties in deployment. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the existing technology and provide a CPE IoT terminal circuit and 5G IoT terminal device that are easy to develop, convenient for customers to quickly deploy, and have good stability.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A CPE Internet of Things terminal circuit, comprising:

[0007] The terminal main body control circuit includes a power supply circuit and a 5G control unit, wherein the output end of the power supply circuit is electrically connected to the power control end of the 5G control unit, the input end of the power supply circuit is used to connect to an external power supply, and the 5G control unit is used to receive mobile network signals;

[0008] A network port circuit is connected to a connection terminal of the 5G control main unit so that the 5G control main unit receives a wired network signal;

[0009] An interface serial port communication circuit, comprising an R485 interface unit, an RS232 serial port unit, an R485 socket, an RS232 socket, and a wiring socket, wherein the R485 interface unit is connected to one control end of the 5G control main unit, the RS232 serial port unit is connected to two control ends of the 5G control main unit, the power connection end of the R485 interface unit is electrically connected to the R485 socket, the RS232 serial port unit is electrically connected to the RS232 socket, and the wiring end of the R485 socket and the wiring end of the RS232 socket are electrically connected to the wiring socket;

[0010] A WIFI wireless communication circuit, configured to convert the mobile network signal and / or the wired network signal into a WIFI wireless signal and output the signal, connected to the communication control terminal of the 5G control unit, wherein the wireless control terminal of the WIFI wireless communication circuit is electrically connected to the wireless signal output terminal of the R485 interface unit and the wireless signal output terminal of the RS232 serial port unit, respectively;

[0011] The open source system module is installed in the 5G control unit.

[0012] In one embodiment, the open source system module is an OPEN WRT system module.

[0013] In one embodiment, the interface serial communication circuit further includes a first field effect transistor and a second field effect transistor, wherein the first end of the first field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the control end of the R485 interface unit, respectively, the second end of the first field effect transistor is electrically connected to the data sending end of the 5G control unit, and the control end of the first field effect transistor is electrically connected to the IO power supply end of the 5G control unit;

[0014] The first end of the second field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the two control ends of the R485 interface unit, respectively; the second end of the second field effect transistor is electrically connected to the data receiving end of the 5G control unit; and the control end of the second field effect transistor is electrically connected to the IO power supply end of the 5G control unit.

[0015] In one embodiment, the interface serial communication circuit further includes a third field effect transistor and a fourth field effect transistor, the first end of the third field effect transistor being electrically connected to the wireless control end of the WIFI wireless communication circuit and the control end of the RS232 serial port unit, respectively, the second end of the third field effect transistor being electrically connected to the data sending ends of the 5G control unit, and the control end of the third field effect transistor being electrically connected to the IO power supply end of the 5G control unit;

[0016] The first end of the fourth field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the two control ends of the RS232 serial port unit, respectively; the second end of the fourth field effect transistor is electrically connected to the two receiving data ends of the 5G control unit; and the control end of the fourth field effect transistor is electrically connected to the IO power supply end of the 5G control unit.

[0017] In one embodiment, the terminal main body control circuit also includes a first filter capacitor group, the upper half of the first filter capacitor group is respectively connected to the output end of the power supply circuit and the power control end of the 5G control unit, and the lower half of the first filter capacitor group is grounded.

[0018] In one embodiment, the WIFI wireless communication circuit includes a WIFI signal output unit and a second filter capacitor group, the upper half of the second filter capacitor group is respectively connected to the power supply end of the WIFI signal output unit, the wireless signal output end of the R485 interface unit and the wireless signal output end of the RS232 serial port unit, and the lower half of the second filter capacitor group is grounded.

[0019] In one embodiment, the CPE IoT terminal circuit further includes a first transistor and a second resistor, wherein the first end of the first transistor is connected to the upper half end of the second filter capacitor group, the second end of the first transistor is grounded, the control end of the first transistor is connected to the first end of the second resistor, and the second end of the second resistor is connected to the WIFI signal enable end of the 5G control unit.

[0020] In one embodiment, the CPE IoT terminal circuit also includes a user communication circuit, the power supply end of the user communication circuit is electrically connected to the power output end of the power supply circuit, and the switch controlled end of the user communication circuit is electrically connected to the user identification control end of the 5G control unit.

[0021] In one embodiment, the CPE IoT terminal circuit further includes a watchdog controller, the power supply end of the watchdog controller is electrically connected to the power output end of the power supply circuit, and the controlled end of the watchdog controller is electrically connected to the watchdog status control end of the 5G control unit.

[0022] A 5G Internet of Things terminal device, comprising the CPE Internet of Things terminal circuit described in any one of the above embodiments.

[0023] Compared with the prior art, the present disclosure has at least the following advantages:

[0024] The above-mentioned CPE IoT terminal circuit integrates WAN / LAN port wired access, 5G wireless communication access technology, WIFI wireless access technology, RS232 serial port IoT data transmission technology, and R485 interface IoT data transmission technology, making the CPE IoT terminal circuit have good compatibility. The terminal also adopts open source system modules and transplants them into the 5G control unit. The software is compatible with common protocols on the market such as wireless communication protocol, SMS communication protocol, FTP communication protocol, VPN communication protocol, IP ROUTE routing protocol, UPNP protocol, TCP protocol, UDP protocol, MQTT protocol, etc., which can facilitate customers to quickly deploy and customize, solve the problem of deep market cultivation in various IoT application fields, facilitate customer customized development, reduce development workload, and have good working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is an overall schematic diagram of a CPE IoT terminal circuit in one embodiment;

[0027] Figure 2 This is a circuit diagram of an interface serial communication circuit of a CPE IoT terminal circuit in one embodiment;

[0028] Figure 3 For Figure 2 Circuit diagram of the WIFI wireless communication circuit connected to the interface serial communication circuit shown;

[0029] Figure 4 For Figure 2 The circuit diagram of the 5G control unit in the terminal main body control circuit connected to the interface serial communication circuit shown;

[0030] Figure 5 for Figure 4 A circuit diagram of a power supply circuit in a terminal main body control circuit is shown;

[0031] Figure 6 For Figure 4 The circuit diagram of the network port circuit connected to the 5G control main unit shown;

[0032] Figure 7 For Figure 4 The circuit diagram of the user communication circuit connected to the 5G control main unit shown;

[0033] Figure 8 For Figure 4 The circuit diagram of the watchdog controller connected to the 5G control unit is shown. DETAILED DESCRIPTION

[0034] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0038] See also Figures 1 to 6 , which is a CPE Internet of Things terminal circuit of an embodiment of the present utility model, including a terminal main body control circuit, a network port circuit, an interface serial port communication circuit, a WIFI wireless communication circuit and an open source system module.

[0039] The terminal main body control circuit includes a power supply circuit and a 5G control main unit U1-A. The output end of the power supply circuit is electrically connected to the power control end of the 5G control main unit U1-A, and the input end of the power supply circuit is used to connect to an external power supply. The 5G control main unit U1-A is used to receive mobile network signals; the network port circuit is connected to the connection end of the 5G control main unit U1-A so that the 5G control main unit U1-A receives wired network signals; the interface serial port communication circuit includes R485 interface units U8-U9, RS232 serial port unit U6, R485 socket (consisting of end A and end B), RS232 socket (consisting of 232_DO end, 232_DI end and 232_GNC end) and wiring socket U7. The R485 interface units U8-U9 are connected to the control end of the 5G control main unit U1-A, and RS2 The 32 serial port unit U6 is connected to the control terminals of the 5G control main unit U1-A, the power connection terminal of the R485 interface unit U8-U9 is electrically connected to the R485 socket, the RS232 serial port unit U6 is electrically connected to the RS232 socket, and the connection terminal of the R485 socket and the connection terminal of the RS232 socket are electrically connected to the connection socket U7; the WIFI wireless communication circuit is used to convert mobile network signals and / or wired network signals into WIFI wireless signals and output them. The WIFI wireless communication circuit is connected to the communication control terminal of the 5G control main unit U1-A, and the wireless control terminal of the WIFI wireless communication circuit is electrically connected to the wireless signal output terminal of the R485 interface unit U8-U9 and the wireless signal output terminal of the RS232 serial port unit U6 respectively; the open source system module is installed in the 5G control main unit U1-A.

[0040] It can be understood that the R485 interface units U8-U9 have a longer communication distance when wired, and can be used in situations requiring remote access or expanded network coverage, making them suitable for remote communication and monitoring. In the RS232 serial port unit U6, the RS232 interface is one of the commonly used serial communication interface standards, with a wide range of applications, easy programming, and the ability to use longer wires than other interfaces. It is generally used in indoor scenarios such as offices and homes. Because the wiring terminals of the R485 socket and the wiring terminals of the RS232 socket form the wiring socket U7, the overall terminal has good compatibility. External devices are connected to the wiring socket U7 via wires. Once connected, the devices can transmit data through the R485 interface units U8-U9 and the RS232 serial port unit U6, and the data can be monitored in real time. Furthermore, the R485 interface units U8-U9 include an inverter U8 and an R485 interface master unit U9. The connection between the two enables bidirectional data transmission. When a device connected to the R485 interface communicates, inverter U8 inverts the input signal to improve signal stability. In this embodiment, the inverter U8 is IC-74HC04, the R485 interface master unit U9 is IC_MAX3485, and the RS232 serial port unit U6 is IC_MAX3232.

[0041] In this embodiment, the CPE IoT terminal circuit integrates WAN / LAN port wired access, 5G wireless communication access technology, WIFI wireless access technology, RS232 serial port IoT data transmission technology, and R485 interface IoT data transmission technology, so that the CPE IoT terminal circuit has good compatibility. The terminal also adopts an open source system module and transplants it into the 5G control unit U1-A. The software is compatible with common protocols on the market such as wireless communication protocol, SMS communication protocol, FTP communication protocol, VPN communication protocol, IP ROUTE routing protocol, UPNP protocol, TCP protocol, UDP protocol, MQTT protocol, etc., which can facilitate customers to quickly deploy and customize, solve the problem of deep market cultivation in various IoT application fields, facilitate customer customized development, reduce development workload, and have good working stability.

[0042] like Figure 2 As shown, the interface serial communication circuit further includes a first capacitor C18, the upper end of the first capacitor C18 is respectively connected to the power supply terminal VCC of the R485 interface main unit U9 and the wireless control terminal of the WIFI wireless communication circuit, and the lower end of the first capacitor C18 is grounded, so as to stabilize the voltage between the wireless control terminal of the WIFI wireless communication circuit and the power supply terminal of the R485 interface main unit U9, reduce the voltage mutation, and ensure the stability of communication when the external device is powered on.

[0043] Furthermore, the interface serial port communication circuit also includes a second capacitor C8, the upper half of the second capacitor C8 is respectively connected to the wireless control end of the WIFI wireless communication circuit and the power supply end of the RS232 serial port unit U6, and the lower half of the second capacitor C8 is grounded, so as to stabilize the voltage between the wireless control end of the WIFI wireless communication circuit and the power supply end of the RS232 serial port unit U6, reduce the voltage mutation, and ensure the stability of communication when the external device is powered on. Therefore, when the device communicates through the wiring socket, it can stably transmit data through the R485 interface unit U8-U9 and the RS232 serial port unit U6, thereby ensuring the normal operation of the CPE Internet of Things terminal circuit.

[0044] Furthermore, the open source system module is the OPEN WRT system module. As you can see, OPEN WRT is a Linux distribution, a universal operating system that facilitates customized development for each customer's specific field. Companies or customers with development capabilities can directly provide open software architecture to customers, who can then perform customized development directly on the project in question. For customers without development capabilities, the company can directly provide customized development based on their needs, thus expanding the application of the Internet of Things in the market.

[0045] like Figure 2 As shown, in one embodiment, the interface serial communication circuit further includes a first field effect transistor Q17 and a second field effect transistor Q18, combined with Figure 3As shown, the first end of the first field effect transistor Q17 is electrically connected to the wireless control terminal WIFI3V3 of the WIFI wireless communication circuit and the control end of the R485 interface unit U8-U9, respectively, the second end of the first field effect transistor Q17 is electrically connected to the sending data terminal TXD_MODBUS of the 5G control main unit U1-A, and the control end of the first field effect transistor Q17 is electrically connected to the IO power supply terminal VDDIO1V8 of the 5G control main unit U1-A; the first end of the second field effect transistor Q18 is electrically connected to the wireless control terminal of the WIFI wireless communication circuit and the control two ends of the R485 interface unit U8-U9, respectively, the second end of the second field effect transistor Q18 is electrically connected to the receiving data terminal RXD_MODBUS of the 5G control main unit U1-A, and the control end of the second field effect transistor Q18 is electrically connected to the IO power supply terminal of the 5G control main unit U1-A. It can be understood that when the terminal is powered on, the 5G control main unit U1-A is powered on, and after the IO power supply end is powered on, the first field effect transistor Q17 and the second field effect transistor Q18 are turned on. At this time, after the R485 wire is connected to the R485 interface, the device connected to the R485 interface can communicate data with the 5G control main unit U1-A through the R485 interface unit U8-U9. At the same time, after the WIFI wireless communication circuit outputs the WIFI wireless signal and transmits the signal to the R485 interface unit U8-U9, the device connected to the R485 interface can remotely obtain real-time data, which can be used for industrial automation, security monitoring, environmental detection and real-time traffic monitoring, etc.

[0046] like Figure 2As shown, in one embodiment, the interface serial port communication circuit also includes a third field effect transistor Q3 and a fourth field effect transistor Q10, the first end of the third field effect transistor Q3 is electrically connected to the wireless control end of the WIFI wireless communication circuit and the control end of the RS232 serial port unit U6, respectively, the second end of the third field effect transistor Q3 is electrically connected to the sending data terminals TXD_RS232 of the 5G control main unit U1-A, and the control end of the third field effect transistor Q3 is electrically connected to the IO power supply terminal of the 5G control main unit U1-A; the first end of the fourth field effect transistor Q10 is electrically connected to the wireless control end of the WIFI wireless communication circuit and the control ends of the RS232 serial port unit U6, respectively, the second end of the fourth field effect transistor Q10 is electrically connected to the receiving data terminals RXD_RS232 of the 5G control main unit U1-A, and the control end of the fourth field effect transistor Q10 is electrically connected to the IO power supply terminal of the 5G control main unit U1-A. It can be understood that when the terminal device is powered on, the 5G control unit U1-A is powered on, and when the IO power supply is powered on, the first field-effect transistor Q17 and the second field-effect transistor Q18 are also turned on. At this time, after the RS232 wire is connected to the RS232 serial port, the device connected to the RS232 serial port can communicate data with the 5G control unit U1-A through the RS232 serial port unit U6. At the same time, after the WIFI wireless communication circuit outputs the WIFI wireless signal and transmits the signal to the RS232 serial port unit U6, the device connected to the RS232 serial port can communicate over short distances, which can be used for communication with computers, instruments, printers, and other devices. Furthermore, when an external device is connected to the CPE IoT terminal circuit via the wiring socket, because the first field-effect transistor Q17, the second field-effect transistor Q18, the third field-effect transistor Q3, and the fourth field-effect transistor Q10 are all turned on, regardless of the type of external device, it can communicate normally through the terminal device, thereby improving the communication compatibility of the terminal device.

[0047] In this embodiment, the first field-effect transistor Q17, the second field-effect transistor Q18, the third field-effect transistor Q3, and the fourth field-effect transistor Q10 are all NMOS transistors. The first terminals of the first field-effect transistor Q17, the second field-effect transistor Q18, the third field-effect transistor Q3, and the fourth field-effect transistor Q10 are all drains. The second terminals of the first field-effect transistor Q17, the second field-effect transistor Q18, the third field-effect transistor Q3, and the fourth field-effect transistor Q10 are all sources. The control terminals of the first field-effect transistor Q17, the second field-effect transistor Q18, the third field-effect transistor Q3, and the fourth field-effect transistor Q10 are all gates.

[0048] like Figure 4 and Figure 5As shown, in one embodiment, the terminal main body control circuit further includes a first filter capacitor group CG1, the upper half of the first filter capacitor group CG1 is connected to the output terminal VBAT of the power supply circuit and the power control terminal VBAT of the 5G control main unit U1-A, respectively, and the lower half of the first filter capacitor group CG1 is grounded. It can be understood that after the power supply circuit rectifies and reduces the voltage of the external power supply, interference from high-frequency and low-frequency signals is inevitable. At this time, directly outputting the reduced voltage current to the 5G control main unit U1-A will be affected by the high and low frequency signals, thereby affecting the 5G control main unit U1-A when receiving mobile network signals and / or wired network signals. The provision of the first filter capacitor group CG1 can effectively filter out high-frequency and low-frequency signals, ensuring the stability of the output current.

[0049] like Figure 3 As shown, in one embodiment, the WIFI wireless communication circuit includes a WIFI signal output unit U10 and a second filter capacitor group CG2, combined with Figure 2 As shown, the upper half of the second filter capacitor group CG2 is respectively connected to the power supply terminal of the WIFI signal output unit U10, the wireless signal output terminal of the R485 interface unit U8-U9, and the wireless signal output terminal of the RS232 serial port unit U6, and the lower half of the second filter capacitor group CG2 is grounded. It can be understood that when the WIFI wireless signal is output to the R485 interface unit U8-U9 and / or the RS232 serial port unit U6 through the power supply terminal, it is necessary to filter the signal through the second filter capacitor group CG2, specifically filtering the high-frequency signal and the low-frequency signal, so that the WIFI wireless signal does not fluctuate significantly, thereby ensuring that the voltage of the R485 interface unit U8-U9 and / or the RS232 serial port unit U6 is constant, and further ensuring normal communication of the device connected to the R485 interface and / or the device connected to the RS232 serial port.

[0050] like Figure 3As shown, in one embodiment, the CPE Internet of Things terminal circuit also includes a first transistor Q7 and a second resistor R66, the first end of the first transistor Q7 is respectively connected to the upper half end of the second filter capacitor group CG2 and the enable end of the WIFI signal output unit U10, the second end of the first transistor Q7 is grounded, the control end of the first transistor Q7 is connected to the first end of the second resistor R66, and the second end of the second resistor R66 is connected to the WIFI signal enable end of the 5G control main unit U1-A. It can be understood that when the terminal is turned on and powered on, the 5G control main unit U1-A is powered. If the 5G control main unit U1-A can receive mobile network signals and / or wired network signals at this time, that is, the network port or mobile signal can be connected to the network, the 5G control main unit U1-A enables the WIFI signal, and turns on the first transistor Q7 through the second resistor R66, so that the current of the WIFI signal output unit U10 is grounded. Thus, the WIFI signal output unit U10 converts the mobile network signal and / or wired network signal into a WIFI wireless signal, and outputs it through the antenna after capacitor filtering. At the same time, the wireless signal is filtered by the second filter capacitor group CG2 and output to the R485 interface unit U8-U9 and / or RS232 serial port unit U6 for normal communication.

[0051] In this embodiment, the first transistor Q7 is an NPN transistor, a first terminal of which is a collector, a second terminal of which is an emitter, and a control terminal of which is a base.

[0052] like Figure 7 As shown, in one embodiment, the CPE IoT terminal circuit also includes a user communication circuit, combined with Figure 4As shown, the power supply end of the user communication circuit is electrically connected to the power output end of the power supply circuit, and the switch controlled end of the user communication circuit is electrically connected to the user identification control end of the 5G control unit U1-A. Furthermore, the user communication circuit includes a communication switch U2, a mobile communication card holder unit U11, and an embedded communication unit U5. The switch controlled end of the communication switch U2 is electrically connected to the user identification control end of the 5G control unit U1-A, the identification end of the communication switch U2 is electrically connected to the mobile communication card holder unit U11, and the identification end of the communication switch U2 is electrically connected to the embedded communication unit U5. It can be understood that the mobile communication card holder unit U11 is used to insert a universal user identity (USIM) card. When the communication switch U2 is connected to the mobile communication card holder unit U11, it can send and receive first-mode mobile network signals, and the signal contains the corresponding user identity information. When replacing another USIM card, the first-mode mobile network signal sent and received contains the corresponding user identity information. The embedded communication unit U5 is embedded with an embedded SIM (Embedded-SIM) card. When the communication switch U2 is connected to the embedded communication unit U5, it can send and receive second-mode mobile network signals, and the corresponding user identity information is unique. In this way, the communication switch U2 can switch between the mobile communication card holder unit mode and the embedded communication unit mode, so that the CPE Internet of Things terminal circuit can adjust the USIM card mode or ESIM card mode to access the network, so that the WIFI wireless communication circuit converts the first-mode mobile network signal or the second-mode mobile network signal into a WIFI wireless signal and outputs it for external devices to connect to the network.

[0053] like Figure 8 As shown, in one embodiment, the CPE IoT terminal circuit also includes a watchdog controller, combined with Figure 4 As shown, the power supply terminal of the watchdog controller is electrically connected to the power output terminal of the power circuit, and the controlled terminal of the watchdog controller is electrically connected to the watchdog status control terminal of the 5G control unit U1-A. It is understandable that the 5G control unit U1-A generally has a built-in watchdog module, which is automatically managed by the system and does not require additional debugging. However, before the CPE IoT terminal circuit is started, the built-in watchdog module cannot monitor the terminal status. Therefore, an external watchdog needs to be set. If the terminal has an abnormality or failure, the external watchdog can automatically restart and monitor the operating status of the terminal device, realizing a 24-hour unmanned operation function. Even if the terminal device has an abnormality, no human intervention is required.

[0054] The present disclosure also provides a 5G Internet of Things terminal device, including the CPE Internet of Things terminal circuit of any of the above embodiments.

[0055] Compared with the prior art, the present disclosure has at least the following advantages:

[0056] The above-mentioned CPE IoT terminal circuit integrates WAN / LAN port wired access, 5G wireless communication access technology, WIFI wireless access technology, RS232 serial port IoT data transmission technology, and R485 interface IoT data transmission technology, which makes the CPE IoT terminal circuit have good compatibility. The terminal also adopts open source system modules and transplants them into the 5G control unit U1-A. The software is compatible with common protocols on the market such as wireless communication protocol, SMS communication protocol, FTP communication protocol, VPN communication protocol, IPROUTE routing protocol, UPNP protocol, TCP protocol, UDP protocol, MQTT protocol, etc., which can facilitate customers to quickly deploy and customize, solve the problem of deep market cultivation in various IoT application fields, facilitate customer customized development, and have small development workload and good working stability.

[0057] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A CPE Internet of Things terminal circuit, characterized in that: include: The terminal main body control circuit includes a power supply circuit and a 5G control unit, wherein the output end of the power supply circuit is electrically connected to the power control end of the 5G control unit, the input end of the power supply circuit is used to connect to an external power supply, and the 5G control unit is used to receive mobile network signals; A network port circuit is connected to a connection terminal of the 5G control main unit so that the 5G control main unit receives a wired network signal; An interface serial port communication circuit, comprising an R485 interface unit, an RS232 serial port unit, an R485 socket, an RS232 socket, and a wiring socket, wherein the R485 interface unit is connected to one control end of the 5G control main unit, the RS232 serial port unit is connected to two control ends of the 5G control main unit, the power connection end of the R485 interface unit is electrically connected to the R485 socket, the RS232 serial port unit is electrically connected to the RS232 socket, and the wiring end of the R485 socket and the wiring end of the RS232 socket are electrically connected to the wiring socket; A WIFI wireless communication circuit, configured to convert the mobile network signal and / or the wired network signal into a WIFI wireless signal and output the signal, connected to the communication control terminal of the 5G control unit, wherein the wireless control terminal of the WIFI wireless communication circuit is electrically connected to the wireless signal output terminal of the R485 interface unit and the wireless signal output terminal of the RS232 serial port unit, respectively; The open source system module is installed in the 5G control unit.

2. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The open source system module is an OPENWRT system module.

3. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The interface serial communication circuit also includes a first field effect transistor and a second field effect transistor, wherein the first end of the first field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the control end of the R485 interface unit, respectively, the second end of the first field effect transistor is electrically connected to the data sending end of the 5G control unit, and the control end of the first field effect transistor is electrically connected to the IO power supply end of the 5G control unit; The first end of the second field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the two control ends of the R485 interface unit, respectively; the second end of the second field effect transistor is electrically connected to the data receiving end of the 5G control unit; and the control end of the second field effect transistor is electrically connected to the IO power supply end of the 5G control unit.

4. The CPE Internet of Things terminal circuit according to claim 3, characterized in that: The interface serial communication circuit also includes a third field effect transistor and a fourth field effect transistor, the first end of the third field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the control end of the RS232 serial port unit respectively, the second end of the third field effect transistor is electrically connected to the data sending ends of the 5G control unit, and the control end of the third field effect transistor is electrically connected to the IO power supply end of the 5G control unit; The first end of the fourth field effect transistor is electrically connected to the wireless control end of the WIFI wireless communication circuit and the two control ends of the RS232 serial port unit, respectively; the second end of the fourth field effect transistor is electrically connected to the two receiving data ends of the 5G control unit; and the control end of the fourth field effect transistor is electrically connected to the IO power supply end of the 5G control unit.

5. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The terminal main body control circuit also includes a first filter capacitor group, the upper half of the first filter capacitor group is respectively connected to the output end of the power supply circuit and the power control end of the 5G control unit, and the lower half of the first filter capacitor group is grounded.

6. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The WIFI wireless communication circuit includes a WIFI signal output unit and a second filter capacitor group, the upper half of the second filter capacitor group is respectively connected to the power supply end of the WIFI signal output unit, the wireless signal output end of the R485 interface unit and the wireless signal output end of the RS232 serial port unit, and the lower half of the second filter capacitor group is grounded.

7. The CPE Internet of Things terminal circuit according to claim 6, characterized in that: The CPE Internet of Things terminal circuit also includes a first transistor and a second resistor, the first end of the first transistor is connected to the upper half end of the second filter capacitor group, the second end of the first transistor is grounded, the control end of the first transistor is connected to the first end of the second resistor, and the second end of the second resistor is connected to the WIFI signal enable end of the 5G control unit.

8. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The CPE Internet of Things terminal circuit also includes a user communication circuit, the power supply end of the user communication circuit is electrically connected to the power output end of the power supply circuit, and the switch controlled end of the user communication circuit is electrically connected to the user identification control end of the 5G control unit.

9. The CPE Internet of Things terminal circuit according to claim 1, characterized in that: The CPE Internet of Things terminal circuit also includes a watchdog controller, the power supply end of the watchdog controller is electrically connected to the power output end of the power supply circuit, and the controlled end of the watchdog controller is electrically connected to the watchdog status control end of the 5G control unit.

10. A 5G Internet of Things terminal device, characterized in that: The CPE Internet of Things terminal circuit comprises the CPE Internet of Things terminal circuit according to any one of claims 1 to 9.

Images