Dual-mode ONU (Optical Network Unit) equipment with uninterrupted power supply and based on PON (Passive Optical Network) system

Abstract

The invention relates to the technical field of communication, in particular to dual-mode ONU (Optical Network Unit) equipment with an uninterruptible power supply and based on a PON (Passive Optical Network) system. The dual-mode ONU comprises a power storage and supply module, a dual-mode ONU module and a control unit, wherein the power storage and supply module comprises an AC220V power supply interface, a DC12V power supply interface and a USB discharge interface; the dual-mode ONU module comprises an optical signal receiving interface and an optical signal transmitting interface; the control unit can automatically control the charging and discharging strategy of the power storage and supply module according to the state of the power storage and supply module and the condition of an external power supply, so as to ensure the uninterrupted work of the dual-mode ONU module. According to the PON system-based dual-mode ONU equipment with the uninterruptible power supply provided by the invention, the power storage and supply module, the dual-mode ONU module and the control unit are integrated, so that the power supply stability and the flexible switching of network modes are realized, and the reliability of network services and the user experience are improved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a dual-mode ONU device based on a PON system and with an uninterruptible power supply. Background Art

[0002] With the rapid development of information technology, passive optical network (PON) system has been widely used as an efficient access network technology. In the PON system, the optical network unit (ONU) device is a key component, which is responsible for converting optical signals into electrical signals to achieve data communication between users and the core network. However, traditional ONU devices often have problems with unstable power supply and communication interruption when facing power failure or network mode switching, which seriously affects the user experience and the reliability of network services.

[0003] Most of the existing ONU devices use a single power supply mode. Once the external power supply fails, the device will stop working immediately, resulting in network service interruption. In addition, with the coexistence and development of GPON (Gigabit Passive Optical Network) and EPON (Ethernet Passive Optical Network) technologies, ONU devices need to have the ability to flexibly switch between different network modes to adapt to the network environment and user needs in different regions. Existing ONU devices are generally divided into two types, one is GPON ONU that supports GPON OLT, and the other is EPON ONU that supports EPON system. The two are incompatible ONUs. If the OLT type is changed, then the dozens of ONU devices hanging under the OLT device also need to be replaced at the same time, resulting in great waste. Summary of the invention

[0004] The present invention proposes a dual-mode ONU device based on a PON system with an uninterruptible power supply, which realizes the stability of power supply and flexible switching of network modes by integrating a power storage power supply module, a dual-mode ONU module and a control unit, thereby improving the reliability of network services and user experience.

[0005] The technical solution adopted by the present invention is: a dual-mode ONU device based on a PON system with an uninterruptible power supply, which is composed of a power storage power supply module, a dual-mode ONU module, and a control unit. The power storage power supply module includes an AC220V power supply interface, a DC12V power supply interface, and a USB discharge interface. The power storage power supply module can be charged by using an AC220V alternating current power supply and a DC12V direct current power supply under normal circumstances, and can also supply power to the dual-mode ONU module and other external devices through the USB discharge interface; the dual-mode ONU module includes an optical signal receiving interface and an optical signal sending interface, can automatically switch to a GPON ONU mode and an EPON ONU mode according to a received OLT optical signal, and can work through the power supply provided by the power storage power supply module; the control unit can automatically control the charging and discharging strategy of the power storage power supply module according to the state of the power storage power supply module and the external power supply condition, so as to ensure the uninterrupted operation of the dual-mode ONU module.

[0006] As a further improvement of the present invention, the power storage power supply module is composed of a power detection submodule, a backup power switching submodule, and a remaining power warning submodule.

[0007] As a further improvement of the present invention, the power detection submodule can monitor the power state of the power storage power supply module in real time and transmit the power information to the control unit, and the control unit adjusts the charging and discharging strategy according to the power information and the external power supply condition;

[0008] The backup power switching submodule can automatically switch to the battery power supply of the power storage power supply module when the external power supply is interrupted to ensure the normal operation of the dual-mode ONU module;

[0009] The remaining power warning submodule can send a warning signal to the control unit when the power of the power storage power supply module is lower than a preset threshold, and the control unit triggers an alarm and adjusts the power supply strategy according to the warning signal.

[0010] As a further improvement of the present invention, the dual-mode ONU module is composed of a network status detection submodule, a data transmission submodule, and a clock synchronization submodule.

[0011] As a further improvement of the present invention, the network status detection submodule can monitor the status of the GPON and EPON networks in real time, and transmit the network status information to the control unit, and the control unit adjusts the working mode of the dual-mode ONU according to the network status information;

[0012] The data transmission submodule can communicate data with the GPON and EPON networks through the OLT optical signal, and can adjust the transmission rate and the working mode according to the instructions of the control unit during the data transmission process to adapt to different network environments;

[0013] The clock synchronization submodule can perform clock synchronization with the GPON and EPON networks through the OLT optical signal, and can adjust the clock synchronization strategy according to the instructions of the control unit during the clock synchronization process to ensure accurate time synchronization.

[0014] As a further improvement of the present invention, the control unit is composed of a fault detection submodule, a remote management submodule, and a safety protection submodule.

[0015] As a further improvement of the present invention, the fault detection submodule can monitor the state of the power storage module. When the power storage module fails, the fault detection module can isolate the faulty part and trigger an alarm to ensure the normal operation of the dual-mode ONU module.

[0016] The remote management submodule can receive instructions sent by the remote device and adjust the charging and discharging strategy of the power storage module and the working mode of the dual-mode ONU module according to the instructions;

[0017] The safety protection submodule can monitor the external power supply voltage. When the external power supply voltage exceeds a preset threshold, the safety protection module can automatically disconnect the external power supply to protect the power storage power supply module and the dual-mode ONU module.

[0018] The beneficial effects of the present invention are as follows: (1) Enhanced continuity and stability of network services: The present invention uses a power storage power supply module to ensure that the ONU device can continue to work when an external power supply fails, effectively avoiding network service interruptions caused by power problems, thereby improving the continuity and stability of network services.

[0019] (2) Flexible switching and efficient utilization of dual-mode network modes: The present invention supports both GPON and EPON network modes, and can automatically switch the working mode according to the received OLT optical signal. It can adapt to different network environments without replacing the equipment, thereby improving the flexibility and utilization efficiency of the equipment.

[0020] (3) Improved convenience of equipment management and maintenance: The present invention allows a remote device to send instructions to adjust the charging and discharging strategy and working mode of the device through a remote management submodule, making the management and maintenance of the device more convenient and efficient.

[0021] (4) Enhanced safety and durability of the equipment: The safety protection submodule can monitor the external power supply voltage and automatically disconnect the external power supply when the voltage is abnormal to protect the equipment from damage. At the same time, the fault detection submodule can monitor the equipment status in real time and trigger an alarm when a fault occurs, ensuring the long-term stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1The present invention discloses a charging and discharging block diagram of a dual-mode ONU device based on a PON system and with an uninterruptible power supply. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] The present invention provides Figure 1 A dual-mode ONU device based on a PON system with an uninterruptible power supply is shown, which is composed of a storage power supply module, a dual-mode ONU module, and a control unit. The storage power supply module includes an AC220V power supply interface, a DC12V power supply interface, and a USB discharge interface. The storage power supply module can be charged using an AC220V AC power supply and a DC12V DC power supply under normal circumstances, and can also power the dual-mode ONU module and other external devices through the USB discharge interface; the dual-mode ONU module includes an optical signal receiving interface and an optical signal sending interface, can automatically switch to a GPON ONU mode and an EPON ONU mode according to a received OLT optical signal, and can work with the power provided by the storage power supply module; the control unit can automatically control the charging and discharging strategy of the storage power supply module according to the state of the storage power supply module and the external power supply condition to ensure the uninterrupted operation of the dual-mode ONU module.

[0025] The power storage power supply module in the present invention is composed of a power detection submodule, a backup power switching submodule, and a remaining power warning submodule. The power detection submodule can monitor the power status of the power storage power supply module in real time, and transmit the power information to the control unit, and the control unit adjusts the charging and discharging strategy according to the power information and the external power supply situation; the backup power switching submodule can automatically switch to the battery power supply of the power storage power supply module when the external power supply is interrupted to ensure the normal operation of the dual-mode ONU module; the remaining power warning submodule can send a warning signal to the control unit when the power of the power storage power supply module is lower than a preset threshold, and the control unit triggers an alarm and adjusts the power supply strategy according to the warning signal.

[0026] The dual-mode ONU module in the present invention is composed of a network status detection submodule, a data transmission submodule, and a clock synchronization submodule. The network status detection submodule can monitor the status of the GPON and EPON networks in real time, and transmit the network status information to the control unit, and the control unit adjusts the working mode of the dual-mode ONU according to the network status information; the data transmission submodule can communicate data with the GPON and EPON networks through the OLT optical signal, and can adjust the transmission rate and the working mode according to the instructions of the control unit during the data transmission process to adapt to different network environments; the clock synchronization submodule can synchronize the clock with the GPON and EPON networks through the OLT optical signal, and can adjust the clock synchronization strategy according to the instructions of the control unit during the clock synchronization process to ensure accurate time synchronization.

[0027] The control unit in the present invention is composed of a fault detection submodule, a remote management submodule, and a safety protection submodule. The fault detection submodule can monitor the state of the power storage module. When the power storage module fails, the fault detection module can isolate the faulty part and trigger an alarm to ensure the normal operation of the dual-mode ONU module; the remote management submodule can receive instructions sent by a remote device and adjust the charging and discharging strategy of the power storage module and the working mode of the dual-mode ONU module according to the instructions; the safety protection submodule can monitor the external power supply voltage. When the external power supply voltage exceeds a preset threshold, the safety protection module can automatically disconnect the external power supply to protect the power storage module and the dual-mode ONU module.

[0028] Embodiment 1:

[0029] This embodiment provides a dual-mode ONU device based on a PON system with an uninterruptible power supply, as follows.

[0030] (I) Power storage module

[0031] (1) Parameters

[0032] AC220V power supply interface: rated voltage 220V, frequency 50Hz, maximum power 500W;

[0033] DC12V power supply interface: rated voltage 12V, maximum current 10A, maximum power 120W;

[0034] USB discharge interface: supports USB 2.0 standard, rated voltage 5V, maximum current 2A, maximum power 10W;

[0035] Battery: Lithium-ion battery, capacity 5000mAh, rated voltage 3.7V.

[0036] (2) Submodule description

[0037] Power detection submodule: uses a high-precision power meter chip with a resolution of 1% and a detection cycle of 1 second;

[0038] Backup power switching submodule: uses high-speed MOSFET switch, with a switching time of less than 50ms;

[0039] Remaining power warning submodule: The threshold is set to 20%, and the warning signal is transmitted to the control unit via the I2C bus.

[0040] (3) Implementation methods

[0041] ① Charging management: When the device is connected to an AC220V or DC12V power supply, the power detection submodule monitors the battery status, and the control unit adjusts the charging strategy according to the battery voltage and current;

[0042] ②Battery discharge: Power is supplied to the dual-mode ONU module and other external devices through the USB discharge interface. The discharge current and voltage are monitored and adjusted in real time by the control unit.

[0043] (2) Dual-mode ONU module

[0044] (1) Parameters

[0045] Optical signal receiving interface: supports 1Gbps and 2.5Gbps rates, wavelength range 1260-1625nm;

[0046] Optical signal transmission interface: supports 1Gbps and 2.5Gbps rates, wavelength range 1260-1625nm.

[0047] (2) Submodule description

[0048] Network status detection submodule: uses FPGA chip to detect the network status of GPON and EPON in real time, with a detection cycle of 10ms;

[0049] Data transmission submodule: supports IEEE 802.3ah standard, the transmission rate can be adjusted dynamically, and supports dual-mode communication of GPON and EPON;

[0050] Clock synchronization submodule**: uses PTP (Precision Time Protocol) with a synchronization accuracy of 1 microsecond.

[0051] (3) Implementation methods

[0052] ① Mode switching: When the network status detection submodule detects the optical signal type of the OLT, the control unit sends a switching instruction to the data transmission submodule through the I2C bus, and the switching time is less than 100ms;

[0053] ②Data transmission: The data transmission submodule dynamically adjusts the transmission rate and mode according to the optical signal of the OLT and the instructions of the control unit, and sends data through the optical signal transmission interface;

[0054] ③ Clock synchronization: The clock synchronization submodule synchronizes the clock with the GPON and EPON networks through the OLT optical signal, and the control unit adjusts the synchronization strategy according to the network status.

[0055] (III) Control unit

[0056] (1) Parameters

[0057] Processor: ARM Cortex-M4, main frequency 120MHz;

[0058] Memory: 256KB Flash, 64KB SRAM;

[0059] Communication interface: I2C, SPI, UART.

[0060] (2) Submodule description

[0061] Fault detection submodule: adopts hardware fault detection circuit, the detection cycle is 10ms, and the fault isolation time is less than 10ms;

[0062] Remote management submodule: supports TCP / IP protocol, with a maximum transmission rate of 100Mbps and a response time of less than 100ms;

[0063] Safety protection submodule: detection voltage range 0-300V, response time less than 5ms.

[0064] (3) Implementation methods

[0065] ① Fault detection: The fault detection submodule monitors the voltage, current, temperature and other parameters of the power storage power supply module and the dual-mode ONU module in real time. When an abnormality is detected, the control unit isolates the faulty part through the hardware fault detection circuit;

[0066] ② Remote management: The remote management submodule receives instructions sent by the remote device through the Ethernet interface, and the control unit adjusts the charging and discharging strategy of the power storage power supply module and the working mode of the dual-mode ONU module according to the instructions;

[0067] ③Safety protection: The safety protection submodule monitors the external power supply voltage in real time. When the voltage exceeds the preset threshold, the control unit automatically disconnects the external power supply through the MOSFET switch to protect the device from damage.

[0068] Embodiment 2:

[0069] This embodiment provides an application of a dual-mode ONU device based on a PON system with an uninterruptible power supply in Embodiment 1 in an enterprise network, as follows.

[0070] (I) Environmental Configuration

[0071] Enterprise network: Using GPON system, OLT is located in the center of the network;

[0072] Equipment installation: Install the dual-mode ONU equipment based on the PON system with an uninterruptible power supply in the enterprise office building and connect it to the OLT.

[0073] (II) Implementation steps

[0074] (1) Equipment connection: Connect the equipment to the OLT via optical fiber; connect it to the enterprise power system via the AC220V interface or connect it to the backup power supply (backup battery) via the DC12V interface.

[0075] (2) Equipment initialization: After the equipment is powered on, the control unit starts the fault detection submodule to check whether each module is normal; the power storage power supply module starts charging from the AC220V and DC12V interfaces, and the power detection submodule monitors the charging status in real time.

[0076] (3) Network mode detection and switching: The optical signal receiving interface of the dual-mode ONU module detects the optical signal of the OLT; the network status detection submodule automatically switches to GPON mode according to the type of optical signal; the data transmission submodule starts processing data and adjusts the transmission rate and working mode according to the instructions of the control unit.

[0077] (4) Remote management and safety protection: The remote management submodule receives instructions sent by the remote device and adjusts the device's charging and discharging strategy and working mode. The safety protection submodule monitors the external power supply voltage and automatically disconnects the external power supply when the voltage is abnormal to protect the device from damage.

[0078] (5) Backup power switching and early warning: When the external power supply is interrupted, the backup power switching submodule automatically switches to the battery power supply of the storage power supply module; when the remaining power early warning submodule is lower than the preset threshold, it sends a warning signal to the control unit, triggers an alarm and adjusts the power supply strategy.

[0079] This embodiment demonstrates the practical application of a dual-mode ONU device based on a PON system with an uninterruptible power supply in an enterprise network, ensuring the continuity and stability of network services while improving the convenience of equipment management and maintenance.

[0080] In summary, the present invention provides an efficient and reliable network equipment solution, which can not only cope with sudden power outages, but also achieve self-protection and remote control of equipment through intelligent management. The implementation of this equipment not only enhances the stability and reliability of the network, but also provides network management personnel with a convenient maintenance method, ensuring the efficient operation of the enterprise network. Through the implementation of the present invention, enterprises can reduce business interruption time caused by network failures, improve overall operational efficiency, and reduce maintenance costs. In addition, the dual-mode communication capability of the device enables it to flexibly adapt to different network environments and meet the diverse needs of modern enterprise networks.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-mode ONU device based on a PON system with an uninterruptible power supply, characterized in that: The invention is composed of a power storage power supply module, a dual-mode ONU module and a control unit. The power storage power supply module includes an AC220V power supply interface, a DC12V power supply interface and a USB discharge interface. The power storage power supply module can be charged by using an AC220V alternating current power supply and a DC12V direct current power supply under normal circumstances, and can supply power to the dual-mode ONU module and other external devices through the USB discharge interface. The dual-mode ONU module includes an optical signal receiving interface and an optical signal sending interface, can automatically switch to a GPON ONU mode and an EPON ONU mode according to a received OLT optical signal, and can work through the power supply provided by the power storage power supply module. The control unit can automatically control the charging and discharging strategy of the power storage power supply module according to the state of the power storage power supply module and the external power supply condition, so as to ensure the uninterrupted operation of the dual-mode ONU module.

2. A dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 1, characterized in that: The power storage and power supply module is composed of a power detection submodule, a backup power switching submodule, and a remaining power warning submodule.

3. A dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 2, characterized in that: The power detection submodule can monitor the power status of the power storage power supply module in real time and transmit the power information to the control unit, which adjusts the charging and discharging strategy according to the power information and the external power supply status; The backup power switching submodule can automatically switch to the battery power supply of the storage power supply module when the external power supply is interrupted to ensure the normal operation of the dual-mode ONU module; The remaining power warning submodule can send a warning signal to the control unit when the power of the power storage power supply module is lower than a preset threshold, and the control unit triggers an alarm and adjusts the power supply strategy according to the warning signal.

4. The dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 1, characterized in that: The dual-mode ONU module is composed of a network status detection submodule, a data transmission submodule, and a clock synchronization submodule.

5. The dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 1, characterized in that: The network status detection submodule can monitor the status of the GPON and EPON networks in real time, and transmit the network status information to the control unit, and the control unit adjusts the working mode of the dual-mode ONU according to the network status information; The data transmission submodule can communicate data with the GPON and EPON networks through the OLT optical signal, and can adjust the transmission rate and the working mode according to the instructions of the control unit during the data transmission process to adapt to different network environments; The clock synchronization submodule can perform clock synchronization with the GPON and EPON networks through the OLT optical signal, and can adjust the clock synchronization strategy according to the instructions of the control unit during the clock synchronization process to ensure accurate time synchronization.

6. The dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 1, characterized in that: The control unit is composed of a fault detection submodule, a remote management submodule, and a safety protection submodule.

7. The dual-mode ONU device based on a PON system with an uninterruptible power supply according to claim 1, characterized in that: The fault detection submodule can monitor the state of the power storage module. When the power storage module fails, the fault detection module can isolate the faulty part and trigger an alarm to ensure the normal operation of the dual-mode ONU module. The remote management submodule can receive instructions sent by the remote device and adjust the charging and discharging strategy of the power storage module and the working mode of the dual-mode ONU module according to the instructions; The safety protection submodule can monitor the external power supply voltage. When the external power supply voltage exceeds a preset threshold, the safety protection module can automatically disconnect the external power supply to protect the power storage power supply module and the dual-mode ONU module.

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