Dual-mode switched multi-source power supply router apparatus

Abstract

The utility model discloses a kind of double mode switching multi-source power supply router device, it is related to wireless communication and industrial internet of things technical field, it includes router ontology, built-in control unit and protective housing;Wireless double mode communication module is integrated by LTE Cat-M1 ground communication unit and NTN satellite communication unit;Intelligent switching unit;GNSS positioning module contains active antenna and LNA amplifier, the power output pin of wireless double mode communication module is powered to LNA amplifier by coaxial cable;Double power input interface contains parallel AC 220V input terminal and DC 48-110V input terminal, and its output end is connected the input end of relay switching circuit by voltage comparator;Protocol management engine, its data bus is bidirectionally connected the protocol package interface of wireless double mode communication module.The double mode switching multi-source power supply router device solves the problem of poor communication resilience, high power supply risk and weak environmental adaptability of field industrial internet of things equipment by double mode intelligent switching and double power supply redundant power supply.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication and industrial Internet of Things technology, specifically a dual-mode switching multi-source power supply router device. Background Technology

[0002] With the increasing prevalence of IoT applications, remote environments such as mountainous areas, islands, power lines, and oil and gas facilities require long-term, stable wireless data backhaul. While current 4G LTE Cat M1 routers offer low power consumption and wide coverage, they still rely on terrestrial base stations, and their connection quality may be interrupted by natural disasters or power outages.

[0003] Industrial 4G routers are low-power devices, often powered by batteries or solar energy. When ground mobile base stations lose power and the ground mobile network is completely unavailable, the 4G routers, although still operating, cannot upload data. Many power feeders, roadside emergency communication stations, weather stations, agricultural sensors, and water resource monitoring equipment that rely on them for connections will lose all connection, affecting disaster assessment and emergency response.

[0004] NTN technology (such as low-Earth orbit satellite networks) plays a backup role in this event, providing low-speed, high-latency but stable communication capabilities when terrestrial coverage is lacking. However, there is currently a lack of industrial router equipment on the market that can automatically switch between LTE and NTN and has multi-source power backup and protection design, which makes deployment and maintenance difficult and limits its application.

[0005] Therefore, in order to address the above problems, the applicant needs to design a dual-mode switching multi-source power supply router device to solve the problem. Utility Model Content

[0006] The purpose of this invention is to provide a dual-mode switching multi-source power supply router device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dual-mode switching multi-source power supply router device, comprising a router body, a built-in control unit and a protective shell; a wireless dual-mode communication module, which integrates an LTE Cat-M1 terrestrial communication unit and an NTN satellite communication unit; an intelligent switching unit, whose signal input terminal is connected to the signal strength monitoring interface of the wireless dual-mode communication module, and whose control output terminal is connected to the AT command interface of the wireless dual-mode communication module via a serial bus; a GNSS positioning module, comprising an active antenna and an LNA amplifier, wherein the power output pin of the wireless dual-mode communication module supplies power to the LNA amplifier via a coaxial cable; a dual power input interface, comprising parallel AC 220V input terminals and DC 48-110V input terminals, whose output terminal is connected to the input terminal of a relay switching circuit via a voltage comparator; and a protocol management engine, whose data bus is bidirectionally connected to the protocol encapsulation interface of the wireless dual-mode communication module.

[0008] Furthermore, the configuration interface of the intelligent switching unit is connected to an external mode selection DIP switch via an SPI bus.

[0009] Through the above structural design, an external DIP switch and an intelligent switching unit are connected via an SPI bus to achieve hardware-level mode switching priority setting.

[0010] Furthermore, the output terminal of the relay switching circuit of the dual power input interface is connected to a resettable fuse, and the output terminal of the resettable fuse is connected in parallel to a supercapacitor module.

[0011] Through the above structural design, a resettable fuse is connected in series and a supercapacitor module is connected in parallel in the dual power supply switching circuit to form a triple power supply protection mechanism.

[0012] Furthermore, the positioning data output terminal of the GNSS positioning module is connected to the satellite beam prediction interface of the intelligent switching unit via a UART serial port.

[0013] The above structural design will reduce ineffective power consumption and extend the battery life of equipment deployed in the field.

[0014] Furthermore, the communication interface area of ​​the protective shell is provided with: a multiplexed serial port, whose mode selection pin is connected to the output terminal of the physical push button switch; and an RJ45 Ethernet port, whose MAC layer interface is connected to the Ethernet PHY chip of the protocol management engine.

[0015] Through the above structural design, the mode selection pin of the multiplexed serial port is connected to a physical button switch to realize hard switching of RS232 / 485 protocols and eliminate the risk of software configuration conflicts; the RJ45 interface is directly coupled to the PHY layer chip of the protocol management engine to ensure physical isolation transmission of industrial fieldbus data and IP network data and avoid signal crosstalk.

[0016] Furthermore, the routing strategy configuration interface of the protocol management engine is connected to the configuration register of the Web service module via an internal bus.

[0017] The above structural design avoids the communication interruption problem caused by the need to restart traditional routers for the changes to take effect.

[0018] Furthermore, the firmware update interface of the control unit is connected to the OTA partition of the wireless dual-mode communication module and the flash controller of the protocol management engine via a dual-channel SPI bus.

[0019] Through the above structural design, the control unit connects the wireless module OTA partition and the protocol engine flash memory via a dual-channel SPI bus, achieving zero-interruption firmware updates.

[0020] Furthermore, the heat dissipation structure of the router body includes: an aluminum alloy inner liner block, the heat-conducting surface of which is attached to the radio frequency power amplifier chip of the NTN satellite communication unit.

[0021] Through the above structural design, the heat-conducting surface of the aluminum alloy inner liner is closely attached to the NTN RF power amplifier chip, forming an efficient heat conduction path.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the dual-mode switching multi-source power supply router device solves the problems of poor communication resilience, high power supply risk, and weak environmental adaptability of industrial IoT devices in the field through dual-mode intelligent switching and dual power supply redundancy. The specific details are as follows: When in use, this dual-mode switching multi-source power supply router device uses a dual-mode communication module to monitor the ground network signal strength and data link status in real time. When signal degradation or interruption is detected, the intelligent switching unit triggers AT commands based on a preset threshold to control the communication module to perform cell reselection operations, seamlessly switching the data stream to the NTN satellite link. The active antenna of the GNSS positioning module receives satellite signals, which are amplified by an LNA amplifier and output high-precision positioning data to assist the NTN module in quickly locking the beam. The voltage comparator of the dual power input interface continuously compares the AC / DC input voltage. When the main power supply fails, the backup power supply is activated within 20ms through a relay switching circuit. At the same time, the supercapacitor module maintains the transmission of the Dying Gasp alarm signal. The protocol management engine automatically encapsulates the LwM2M or MQTT protocol according to the current link type and selects the transmission route according to the QoS policy. Finally, under the protection of the protective shell and directional heat dissipation structure, zero interruption of ground network switching, zero power supply disturbance, and high reliability of data transmission are achieved. Attached Figure Description

[0023] Figure 1 This is a block diagram of the internal modules of the router body of this utility model; Figure 2 This is a connection block diagram of the wireless dual communication module of this utility model; Figure 3 This is a connection block diagram of the dual power input interface of this utility model; Figure 4 This is a block diagram of the communication interface connection of the protective shell of this utility model.

[0024] In the diagram: 101, Router body; 102, Control unit; 103, Wireless dual communication module; 103a, LTE Cat-M1 terrestrial communication unit; 103b, NTN satellite communication unit; 103c, Signal strength monitoring interface; 103d, AT command interface; 103e, Power output pin; 103f, Protocol encapsulation interface; 104, Intelligent switching unit; 104a, Serial bus; 104b, Configuration interface; 104c, SPI bus; 104d, Satellite beam prediction interface; 105, GNSS positioning module; 105a, Active antenna; 105b, LNA amplifier; 105c, UART serial port; 105d, Positioning data output terminal; 106, Dual power input interface; 106a, AC 220V input terminal; 106b, DC... 48-110V input terminals; 106c, Voltage comparator; 106d, Relay switching circuit; 106e, Resettable fuse; 106f, Supercapacitor module; 107, Protocol management engine; 107a, Data bus; 107b, Ethernet PHY chip; 107c, Routing strategy configuration interface; 107d, Internal bus; 108, DIP switch; 109, Protective housing communication interface; 109a, Multiplexed serial port; 109b, Mode selection pin; 109c, RJ45 Ethernet port; 109d, MAC layer interface; 110, Physical push-button switch; 111, Web server module; 111a, Configuration register; 112, Heat dissipation structure. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-4As shown, this utility model discloses a dual-mode switching multi-source power supply router device, including a router body 101, a built-in control unit 102 and a protective shell; a wireless dual-mode communication module 103, which is integrated from an LTE Cat-M1 terrestrial communication unit 103a and an NTN satellite communication unit 103b; an intelligent switching unit 104, whose signal input terminal is connected to the signal strength monitoring interface 103c of the wireless dual-mode communication module 103, and whose control output terminal is connected to the AT command interface 103d of the wireless dual-mode communication module 103 via a serial bus 104a; a GNSS positioning module 105, including an active antenna 105a and an LNA amplifier 105b, wherein the power output pin 103e of the wireless dual-mode communication module 103 supplies power to the LNA amplifier 105b via a coaxial cable 105c; and a dual power input interface 106, including parallel AC 220V input terminals 106a and DC power input terminals 106a and 106b. The 48-110V input terminal 106b has its output terminal connected to the input terminal of the relay switching circuit 106d via the voltage comparator 106c; the protocol management engine 107 has its data bus 107a bidirectionally connected to the protocol encapsulation interface 103f of the wireless dual-mode communication module 103.

[0027] The configuration interface 104b of the intelligent switching unit 104 is connected to the external mode selection DIP switch 108 via the SPI bus 104c. The external DIP switch 108 is connected to the intelligent switching unit 104 via the SPI bus to realize hardware-level mode switching priority setting. Users can directly select M1 / NTN / dynamic mode through physical DIP switches, avoiding the risk of software configuration failure. It can still ensure the reliable execution of network policies in extreme environments such as high temperature and electromagnetic interference.

[0028] The output of the relay switching circuit 106d of the dual power input interface 106 is connected to a resettable fuse 106e. The output of the resettable fuse 106e is connected in parallel to a supercapacitor module 106f. In the dual power switching circuit, the resettable fuse 106e is connected in series and the supercapacitor module 106f is connected in parallel to form a triple power protection mechanism: the fuse suppresses overcurrent damage, the supercapacitor maintains power supply to critical circuits at the moment of power failure, and the Dying Gasp alarm signal can be transmitted within a power failure window of ≥50ms, which significantly improves the traceability of power interruption events.

[0029] The positioning data output terminal 105d of the GNSS positioning module 105 is connected to the satellite beam prediction interface 104d of the intelligent switching unit 104 via the UART serial port 105e. The positioning data of the GNSS positioning module 105 is transmitted to the intelligent switching unit 104 in real time via the UART serial port 105e. The satellite orbit prediction algorithm is used to generate an accurate visible time window, so that the NTN module is only awakened during the satellite coverage period, reducing ineffective power consumption and extending the battery life of the equipment deployed in the field.

[0030] The communication interface area 109 of the protective housing includes: a multiplexed serial port 109a, whose mode selection pin 109b is connected to the output of the physical push-button switch 110; an RJ45 Ethernet port 109c, whose MAC layer interface 109d is connected to the Ethernet PHY chip 107b of the protocol management engine 107; the mode selection pin 109b of the multiplexed serial port 109a is connected to the physical push-button switch 110 to achieve hard switching between RS232 / 485 protocols, and with the help of LED status indicators, eliminates the risk of software configuration conflicts; the RJ45 interface 109c is directly coupled to the PHY layer chip of the protocol management engine 107 to ensure physical isolation transmission of industrial fieldbus data and IP network data, and avoid signal crosstalk.

[0031] The routing policy configuration interface 107c of the protocol management engine 107 is connected to the configuration register 111a of the Web service module 111 via the internal bus 107d. The routing policy configuration interface 107c of the protocol management engine 107 is directly connected to the Web service module 111 via the internal bus 107d, establishing a low-latency channel for policy configuration. After the user modifies the QoS parameters, the changes will take effect within ≤100ms, avoiding the communication interruption problem caused by the need to restart the traditional router.

[0032] The firmware update interface of the control unit 102 is connected to the OTA partition of the wireless dual-mode communication module 103 and the flash memory controller of the protocol management engine 107 respectively through a dual-channel SPI bus. The control unit 102 is connected to the OTA partition of the wireless module and the flash memory of the protocol engine through a dual-channel SPI bus to achieve zero interruption of firmware update: when the main channel updates the communication module, the backup channel maintains the protocol stack heartbeat to ensure that the dual network connection remains active throughout the update process.

[0033] The heat dissipation structure 112 of the router body 101 includes: an aluminum alloy inner block, the heat-conducting surface of which is attached to the radio frequency power amplifier chip of the NTN satellite communication unit 103b, and the heat-conducting surface 112a of the aluminum alloy inner block 112 is tightly attached to the NTN radio frequency power amplifier chip, forming an efficient heat conduction path, which reduces the operating temperature of the power amplifier chip by ≥15°C. Compared with a design without heat dissipation, this prevents the satellite link rate attenuation caused by high temperature frequency reduction.

[0034] Working Principle: When using this dual-mode switching multi-source power supply router device, the wireless dual-mode communication module 103 monitors the ground network signal strength RSRP / SINR and data link status in real time. When signal degradation or interruption is detected, the intelligent switching unit 104 triggers AT commands based on a preset threshold, controlling the communication module to perform cell reselection operations and seamlessly switching the data stream to the NTN satellite link. The active antenna 105a of the GNSS positioning module 105 receives satellite signals, which are amplified by the LNA amplifier 105b and output high-precision positioning data to assist the NTN module in quickly locking the beam. The voltage comparator 106c of the dual power input interface 106 continuously compares the AC / DC input voltage. When the main power supply fails, the backup power supply is activated within 20ms through the relay switching circuit 106d. At the same time, the supercapacitor module 106f maintains Dying Gasp alarm signal transmission; Protocol management engine 107 automatically encapsulates LwM2M or MQTT protocols according to the current link type and selects the transmission route according to the QoS policy. Finally, under the protection of the protective shell and directional heat dissipation structure, it achieves zero interruption of ground network switching, zero power supply disturbance and high reliability of data transmission.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dual-mode switching multi-source power supply router device, characterized in that, The system includes a router body (101), a built-in control unit (102), and a protective casing; a wireless dual-mode communication module (103), which is composed of an LTE Cat-M1 terrestrial communication unit (103a) and an NTN satellite communication unit (103b); an intelligent switching unit (104), whose signal input terminal is connected to the signal strength monitoring interface (103c) of the wireless dual-mode communication module (103), and whose control output terminal is connected to the AT command interface (103d) of the wireless dual-mode communication module (103) via a serial bus (104a); a GNSS positioning module (105), which includes an active antenna (105a) and an LNA amplifier (105b), and whose power output pin (103e) supplies power to the LNA amplifier (105b) via a coaxial cable (105c); and a dual power input interface (106), which includes parallel AC 220V input terminals (106a) and DC power input terminals (106b). The 48-110V input terminal (106b) has its output terminal connected to the input terminal of the relay switching circuit (106d) via a voltage comparator (106c); the protocol management engine (107) has its data bus (107a) bidirectionally connected to the protocol encapsulation interface (103f) of the wireless dual-mode communication module (103).

2. The dual-mode switching multi-source power supply router device according to claim 1, characterized in that: The configuration interface (104b) of the intelligent switching unit (104) is connected to an external mode selection DIP switch (108) via an SPI bus (104c).

3. The dual-mode switching multi-source power supply router device according to claim 1, characterized in that: The output of the relay switching circuit (106d) of the dual power input interface (106) is connected to a resettable fuse (106e), and the output of the resettable fuse (106e) is connected in parallel to a supercapacitor module (106f).

4. The dual-mode switching multi-source power supply router device according to claim 1, characterized in that: The positioning data output terminal (105d) of the GNSS positioning module (105) is connected to the satellite beam prediction interface (104d) of the intelligent switching unit (104) via a UART serial port (105e).

5. The dual-mode switching multi-source power supply router device according to claim 4, characterized in that: The communication interface area (109) of the protective shell is provided with: a multiplexed serial port (109a), whose mode selection pin (109b) is connected to the output of the physical push button switch (110); and an RJ45 Ethernet port (109c), whose MAC layer interface (109d) is connected to the Ethernet PHY chip (107b) of the protocol management engine (107).

6. The dual-mode switching multi-source power supply router device according to claim 1, characterized in that: The routing strategy configuration interface (107c) of the protocol management engine (107) is connected to the configuration register (111a) of the Web service module (111) via the internal bus (107d).

7. The dual-mode switching multi-source power supply router device according to claim 6, characterized in that: The firmware update interface of the control unit (102) is connected to the OTA partition of the wireless dual-mode communication module and the flash controller of the protocol management engine (107) via a dual-channel SPI bus.

8. The dual-mode switching multi-source power supply router device according to claim 1, characterized in that: The heat dissipation structure (112) of the router body (101) includes: an aluminum alloy inner liner block, the heat-conducting surface of which is attached to the radio frequency power amplifier chip of the NTN satellite communication unit (103b).

Images