An active optical splitter, FTTR multi-level networking monitoring system and method
By integrating an MCU module, power management chip, and thermistor into the active optical splitter, and combining it with a Bluetooth channel and PON fiber optic network, real-time monitoring and reliable reporting of the status of the active optical splitter are achieved, solving the problem of difficult fault location in FTTR networks and improving network maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 四川长虹新网科技有限责任公司
- Filing Date
- 2026-03-26
- Publication Date
- 2026-06-12
Smart Images
Figure CN122204162A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of optical fiber communication technology, specifically to an active optical splitter, an FTTR multi-level networking monitoring system and method. Background Technology
[0002] Fiber to the Room (FTTR) technology is currently the mainstream solution for broadband access in homes and businesses. An FTTR network employs a distributed architecture where a main gateway connects multiple sub-gateways via a hybrid optical-fiber cable, aiming to achieve full optical coverage throughout the entire house. The active optical splitter, as the core intermediate node in the FTTR network, undertakes the critical task of distributing the optical signal output from the main gateway along with DC power (typically 56V) to the various room sub-gateways via a POF (Plastic Optical Fiber) hybrid optical-fiber cable.
[0003] In existing FTTR network deployments, active optical splitters primarily perform two basic functions: power conversion and optoelectronic signal distribution. Specifically, the power management chip integrated within the active optical splitter distributes the input DC power to multiple downlink ports, providing operating power to the connected sub-gateways; simultaneously, its optoelectronic hybrid connector ports enable transparent transmission of optical signals. However, the design focus of existing active optical splitters is on ensuring basic power supply and signal transmission functions; the active optical splitter itself lacks a communication interface for data interaction with the main gateway, and its operational status information cannot be proactively reported to the network management end.
[0004] The lack of the aforementioned status information poses challenges to the operation and maintenance management of FTTR networks. When network service interruptions or performance degradation occur, maintenance personnel find it difficult to distinguish whether the root cause is a sub-gateway device malfunction, a poor POF hybrid cable connection, or an unstable operating state of the active splitter itself. Existing fault location procedures typically rely on maintenance personnel carrying testing equipment to conduct on-site point-by-point troubleshooting, a time-consuming process with an average fault location time often exceeding 1-2 hours, impacting user service experience and network maintenance efficiency.
[0005] To improve this situation, existing technologies have attempted to add independent monitoring chips and Ethernet management interfaces to active optical splitters to achieve status monitoring and remote management. However, this approach has the following limitations in practical applications: First, adding independent monitoring chips and Ethernet interfaces increases the hardware cost and circuit design complexity of active optical splitters; second, in the typical POF hybrid cable cabling environment of FTTR, additionally laying independent network cables for active optical splitters to manage data transmission disrupts the simplicity of the original cabling architecture and increases deployment difficulty; third, in complex multi-level cascaded networking scenarios, this approach lacks data relay and forwarding mechanisms between cascaded optical splitters, making it difficult to guarantee reliable transmission of end-node status information.
[0006] Therefore, how to achieve real-time monitoring and reliable reporting of the internal operating status of active optical splitters, and support data transmission in multi-level cascaded networking environments, while maintaining the existing FTTR network architecture and without adding extra data cabling constraints, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0007] This invention aims to solve the problem that the status of active optical splitters in existing FTTR networks cannot be remotely obtained by the main gateway, making it difficult for maintenance personnel to quickly locate faults when network failures occur. It proposes an active optical splitter, FTTR multi-level network monitoring system and method.
[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:
[0009] In a first aspect, the present invention provides an active optical splitter, comprising:
[0010] The power conversion module has an input terminal for connecting to an external AC power source and an output terminal for outputting DC power to power the various modules inside the active optical splitter.
[0011] A multi-channel DC power management module has its input terminal electrically connected to the output terminal of the power conversion module. Its output terminal includes multiple downstream ports for connecting to lower-level devices. The multi-channel DC power management module integrates a power management chip, which distributes DC power to each downstream port, monitors the operating status of each downstream port in real time, and generates electrical operating parameters for each downstream port. These electrical operating parameters include real-time output voltage, real-time output current, chip junction temperature, and fault flags. The power management chip also includes a digital communication interface for outputting these electrical operating parameters.
[0012] Multiple optoelectronic hybrid connector ports are provided, each corresponding to a downstream port for connecting to a POF optoelectronic hybrid cable to output DC power and transmit fiber optic signals. Each optoelectronic hybrid connector port is equipped with a thermistor, which is used to sense the temperature of the corresponding optoelectronic hybrid port connector end and generate a corresponding temperature analog signal.
[0013] The MCU module has its power supply terminal electrically connected to the internal low-voltage output terminal of the power management chip and is directly powered by the power management chip. The MCU module includes a digital communication interface and an ADC sampling interface. Its digital communication interface is connected to the digital communication interface of the power management chip to periodically read the electrical operating parameters. Its ADC sampling interface is electrically connected to each thermistor to receive the temperature analog signal and convert it into real-time temperature data at each optoelectronic hybrid port connector.
[0014] The MCU module is used to encapsulate the read electrical operating parameters and converted real-time temperature data according to a preset data frame format to generate a status monitoring data frame, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
[0015] Furthermore, the MCU module reads the predetermined register address range of the power management chip through its digital communication interface to obtain the real-time output current, bus input voltage, chip junction temperature, and hardware fault flag bits of multiple downlink ports of the multi-channel DC power management module.
[0016] Furthermore, the preset data frame format is a fixed-length structure, which includes a frame header, device identifier, status flag, power parameter data segment, temperature data segment, checksum, and frame tail in sequence. When the MCU module reports periodically or when an event triggers a report, it fills in the read electrical operating parameters and the converted real-time temperature data according to the fields and sends them through a Bluetooth broadcast packet or Bluetooth data channel.
[0017] Secondly, the present invention provides an FTTR multi-level network monitoring system, the system comprising:
[0018] At least one active beam splitter as described in the first aspect, wherein the MCU module of the active beam splitter is used to periodically read the electrical operating parameters of the multi-channel DC power management module, collect the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulate the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module;
[0019] Multiple sub-gateways are provided, each connected to the optoelectronic hybrid connector port of the active optical splitter via a POF hybrid optical cable. The sub-gateway is used to scan and receive status monitoring data frames sent by the active optical splitter, and embed the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forward them to the main gateway through the PON optical fiber network.
[0020] A main gateway is used to receive data from a first reporting channel and a second reporting channel in parallel. The first reporting channel data consists of status monitoring data frames sent by an active optical splitter via a Bluetooth channel, and the second reporting channel data consists of status monitoring data frames forwarded by a sub-gateway via a PON fiber optic network. The main gateway is also used to perform consistency processing on the first and second reporting channel data received from the same active optical splitter, and to perform fault diagnosis and output diagnostic results based on the data reception status and the service status of the sub-gateway.
[0021] Furthermore, the sub-gateway writes the parsed status monitoring data frame into a reserved field of digital diagnostic monitoring information. This reserved field follows the data encoding rules of the optical module digital diagnostic monitoring standard and is used to carry the status monitoring data frame.
[0022] Furthermore, the main gateway listens to the first reporting channel data and the second reporting channel data in parallel. In normal mode, the main gateway uses the first reporting channel data. If it does not receive the first reporting channel data of a certain active optical splitter for several consecutive cycles, it switches to using the second reporting channel data as the source of status information for that active optical splitter.
[0023] Furthermore, multiple active optical splitters automatically form a wireless mesh network through the Bluetooth communication module built into their MCU modules; the active optical splitter in the middle cascade position broadcasts its own status monitoring data frame while acting as a relay node to forward the status monitoring data frames of the lower-level active optical splitters; the relay selection strategy is based on the received signal strength and network level, selecting nodes facing the main gateway and with received signal strength higher than a preset threshold for forwarding.
[0024] Furthermore, when the MCU module of the active optical splitter detects that the electrical operating parameters or real-time temperature data exceed a predetermined alarm threshold, it triggers an alarm mode. After triggering the alarm mode, the MCU module broadcasts the alarm via Bluetooth and simultaneously sends the alarm data in the next reporting cycle through the reserved field of the digital diagnostic monitoring information of the sub-gateway.
[0025] Furthermore, the diagnostic logic for fault diagnosis by the main gateway includes:
[0026] If only the first reporting channel data is missing while the second reporting channel data is normal, the diagnosis is a Bluetooth channel failure.
[0027] If both the first and second reporting channels are missing data, the diagnosis is a fault or power outage of the active optical splitter equipment.
[0028] If the data from the first reporting channel is normal, but the service data and digital diagnostic monitoring information of the corresponding sub-gateway under the active optical splitter are missing, then the diagnosis is a PON fiber optic network fault between the active optical splitter and the sub-gateway.
[0029] Thirdly, the present invention provides an FTTR multi-level network monitoring method, applied to the FTTR multi-level network monitoring system as described in the second aspect, the method comprising:
[0030] The MCU module of the active beam splitter periodically reads the electrical operating parameters of the multi-channel DC power management module, collects the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulates the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively sends the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
[0031] The sub-gateway scans and receives status monitoring data frames sent by the active optical splitter, and embeds the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forwards them to the main gateway through the PON optical fiber network.
[0032] The main gateway receives data from the first reporting channel and the second reporting channel in parallel. The first reporting channel data is a status monitoring data frame sent by the active optical splitter via the Bluetooth channel, and the second reporting channel data is a status monitoring data frame forwarded by the sub-gateway via the PON fiber optic network. The main gateway performs consistency processing on the first reporting channel data and the second reporting channel data received from the same active optical splitter, and performs fault diagnosis and outputs the diagnosis results based on the data reception status and the service status of the sub-gateway.
[0033] The beneficial effects of this invention are as follows: The active optical splitter provided by this invention, by integrating an MCU module internally and electrically connecting it to a power management chip and a thermistor, achieves dual monitoring of the internal electrical operating parameters of the power management chip and the real-time temperature of the connector ends of each optoelectronic hybrid connector port. This upgrades the traditional active optical splitter, which only has basic power supply and signal transmission functions, into an intelligent node with active sensing capabilities. Based on this, the FTTR multi-level networking monitoring system and method provided by this invention, through a dual-channel redundant reporting mechanism of Bluetooth and PON fiber optic network channels, allows the status monitoring data of the active optical splitter to be sent to the main gateway via Bluetooth, or forwarded through the fiber optic network via the reserved field of digital diagnostic monitoring information of the sub-gateway. This effectively solves the problem of reliable transmission of monitoring data in multi-level cascaded scenarios. Finally, the main gateway, through parallel reception and consistency processing of dual-channel data, can accurately distinguish different types of problems such as wireless communication failures, equipment power failures, or fiber optic network failures, reducing the fault location time of traditional manual troubleshooting to minutes. Furthermore, the entire solution requires no additional management network cabling, involves minimal hardware modifications, is low-cost, and is perfectly compatible with existing FTTR network architectures. Attached Figure Description
[0034] Figure 1 A schematic diagram of the active beam splitter provided in the embodiment;
[0035] Figure 2 A schematic diagram of the structure of the FTTR multi-level network monitoring system provided in the embodiment;
[0036] Figure 3 A schematic diagram of the communication link of the FTTR multi-level network monitoring system provided in this embodiment;
[0037] Figure 4 This is a flowchart illustrating the FTTR multi-level network monitoring method provided in this embodiment. Detailed Implementation
[0038] Because existing active optical splitters in FTTR networks only have basic power conversion and photoelectric signal distribution functions, the electrical operating parameters of their internal power management chips and the temperature status of their port connectors cannot be remotely obtained by the main gateway. This makes it difficult for maintenance personnel to quickly locate the root cause of network failures. Based on this, the technical solution of this invention is proposed.
[0039] In the active beam splitter provided by this invention, the power conversion module converts external AC power into DC power to power a multi-channel DC power management module. This multi-channel DC power management module distributes DC power to each downstream port through its power management chip, and simultaneously generates real-time electrical operating parameters including real-time output voltage, real-time output current, chip junction temperature, and fault flags for each port. The power supply terminal of the MCU module is electrically connected to the internal low-voltage output terminal of the power management chip and is directly powered by the power management chip. The MCU module communicates with the digital communication interface of the power management chip through its digital communication interface, periodically reading the electrical operating parameters. Simultaneously, a mounting plate... Thermistors at each optoelectronic hybrid connector port sense the temperature of the connector end and generate a temperature analog signal. The MCU module is electrically connected to each thermistor through its ADC sampling interface, receives the temperature analog signal and converts it into real-time temperature data of each connector end. The MCU module encapsulates the read electrical operating parameters and the converted real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively sends the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module, thereby realizing the function of actively reporting the internal operating status of the active optical splitter wirelessly.
[0040] In the FTTR multi-level networking monitoring system and method provided by this invention, firstly, at least one of the aforementioned active optical splitters periodically reads the electrical operating parameters of the multi-channel DC power management module through its MCU module, and collects real-time temperature data of thermistors at each optoelectronic hybrid connector port through the ADC sampling interface. After encapsulating the above data into a status monitoring data frame, it is sent out externally via its built-in Bluetooth communication module in the form of Bluetooth broadcast or Bluetooth Mesh message. Based on this, a dual-channel redundant reporting mechanism is constructed. In the first reporting channel, the status monitoring data frame is sent directly to the main gateway via the Bluetooth channel, or through a wireless Mesh network composed of multiple active optical splitters. After being relayed through the network, the data is sent to the main gateway. In the second reporting channel, the sub-gateway connected to the active optical splitter via a POF hybrid optical-electric cable scans and receives status monitoring data frames sent by nearby active optical splitters. The parsed data frames are embedded into the reserved fields of digital diagnostic monitoring information of their optical modules and forwarded to the main gateway through the PON fiber optic network. The main gateway receives data from the first and second reporting channels in parallel, performs consistency processing on the multi-source data received from the same active optical splitter, and performs fault diagnosis based on the data reception status and the service status of the sub-gateways. Ultimately, this achieves comprehensive monitoring and intelligent fault location of the operating status of active optical splitters in FTTR multi-level networking.
[0041] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0042] Figure 1 A schematic diagram of an active beam splitter is shown below. Please refer to [link / reference]. Figure 1 The active optical splitter specifically includes a power conversion module, a multi-channel DC power management module, multiple optoelectronic hybrid connector ports, and an MCU module.
[0043] The power conversion module has an input terminal for connecting to an external AC power source and an output terminal for outputting DC power to power the various modules inside the active optical splitter.
[0044] Specifically, the power conversion module is the power supply foundation of the active optical splitter. Its input terminal is used to connect to an external 220V AC power supply. Through internal transformer, rectification, filtering and voltage regulation circuits, the AC power is converted into stable DC power to provide working power for the various modules inside the active optical splitter.
[0045] A multi-channel DC power management module has its input terminal electrically connected to the output terminal of the power conversion module. Its output terminal includes multiple downstream ports for connecting to lower-level devices. The multi-channel DC power management module integrates a power management chip, which distributes DC power to each downstream port, monitors the operating status of each downstream port in real time, and generates electrical operating parameters for each downstream port. These electrical operating parameters include real-time output voltage, real-time output current, chip junction temperature, and fault flags. The power management chip also includes a digital communication interface for outputting these electrical operating parameters.
[0046] Specifically, the input of the multi-channel DC power management module is electrically connected to the output of the power conversion module to receive the converted DC power. This module integrates a power management chip, such as the TMI7604R chip, whose output includes multiple downlink ports for connecting to downstream devices. In actual FTTR networking, downstream devices typically refer to sub-gateways. The core functions of the power management chip include two aspects: first, distributing DC power to each downlink port, typically outputting 56V DC to the subsequent optoelectronic hybrid connector ports; second, monitoring the real-time operating status of each downlink port and generating electrical operating parameters for each downlink port through its internal integrated monitoring circuit. These electrical operating parameters specifically include the real-time output voltage and current of each port, the chip junction temperature of the power management chip itself, and various hardware fault flags (such as overcurrent protection, short-circuit protection, thermal shutdown, etc.). To facilitate external reading of these parameters, the power management chip is also equipped with a digital communication interface, such as... The bus interface is used to output electrical operating parameters.
[0047] Multiple optoelectronic hybrid connector ports are provided, each corresponding to a downstream port for connecting a POF optoelectronic hybrid cable to output DC power and transmit fiber optic signals. Each optoelectronic hybrid connector port is equipped with a thermistor, which is used to sense the temperature of the corresponding optoelectronic hybrid port connector end and generate a corresponding temperature analog signal.
[0048] Specifically, multiple optoelectronic hybrid connector ports are configured to correspond one-to-one with each downstream port of the multi-channel DC power management module. Each optoelectronic hybrid connector port adopts an optoelectronic hybrid structure to connect to a POF optoelectronic hybrid cable, simultaneously outputting DC power (e.g., 56V) and transmitting fiber optic signals through the same cable. To monitor the temperature at the connector end, a thermistor, such as an NTC thermistor, is attached to each optoelectronic hybrid connector port. The thermistor is positioned close to the connector's metal pins or housing to sense the actual temperature at the corresponding optoelectronic hybrid connector port end and generate a corresponding temperature analog signal based on temperature changes (resistance changes are converted into voltage changes).
[0049] The MCU module has its power supply terminal electrically connected to the internal low-voltage output terminal of the power management chip and is directly powered by the power management chip. The MCU module includes a digital communication interface and an ADC sampling interface. Its digital communication interface is connected to the digital communication interface of the power management chip to periodically read the electrical operating parameters. Its ADC sampling interface is electrically connected to each thermistor to receive the temperature analog signal and convert it into real-time temperature data at each optoelectronic hybrid port connector.
[0050] The MCU module is used to encapsulate the read electrical operating parameters and converted real-time temperature data according to a preset data frame format to generate a status monitoring data frame, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
[0051] Specifically, the MCU module is the core of the active optical splitter's data acquisition and processing. To simplify circuit design and reduce power consumption, the MCU module's power supply terminal is directly connected to the internal low-voltage output terminal of the power management chip, and is directly powered by the 3.3V low-voltage power supply generated internally by the power management chip, eliminating the need for an additional independent low-voltage power supply module. The MCU module specifically includes a digital communication interface (such as...). It has an interface and multiple ADC sampling interfaces. Its digital communication interface connects to the digital communication interface of the power management chip via... Bus communication connection, the MCU module transmits data according to a preset sampling period (e.g., once every 30 seconds). The bus reads a predetermined register address range (e.g., 0x00 to 0x12) from the power management chip to obtain electrical operating parameters, including the real-time output voltage, real-time output current, chip junction temperature, and fault flag bits of each downstream port. Simultaneously, multiple ADC sampling interfaces of the MCU module are electrically connected to thermistors at each opto-connector port to receive thermistor-generated analog signals. These signals are then converted into digital values using an internal analog-to-digital converter, and the real-time temperature data at the connector end of each opto-connector port is calculated based on the thermistor's resistance-temperature characteristic curve.
[0052] After data acquisition, the MCU module encapsulates the read electrical operating parameters and converted real-time temperature data according to a preset data frame format, generating a unified format status monitoring data frame. In one specific embodiment, the data frame format adopts a fixed 32-byte structure, including a frame header (2 bytes), a device identifier (4 bytes), a status flag (2 bytes), a power parameter data segment (16 bytes, including voltage, current, and chip junction temperature of each port), a temperature data segment (4 bytes, including temperature values of the four ports), a checksum (2 bytes), and a frame trailer (2 bytes). After encapsulation, the MCU module actively sends the status monitoring data frame outwards via its built-in Bluetooth communication module in the form of Bluetooth broadcast or Bluetooth Mesh messages.
[0053] Through the aforementioned hardware structure and workflow, the active optical splitter provided in this embodiment achieves real-time acquisition and active reporting of its internal electrical operating status and port physical temperature status without adding extra data cabling or modifying the existing FTTR network architecture. This upgrades the traditional active optical splitter, which only has power supply and signal transmission functions, into an intelligent node with active sensing capabilities, providing a data foundation for subsequent network monitoring and fault diagnosis.
[0054] Based on the active optical splitter described in the above embodiments, this embodiment also provides an FTTR multi-level network monitoring system. Please refer to [link / reference]. Figure 2 Based on the existing FTTR network architecture, this system introduces active optical splitters with proactive monitoring and reporting capabilities and constructs a dual-channel redundant reporting mechanism, enabling comprehensive monitoring of the operational status of active optical splitters in multi-level cascaded networks.
[0055] like Figure 2 As shown, the system mainly includes: at least one active optical splitter as described in at least one embodiment, multiple sub-gateways, and a main gateway.
[0056] The MCU module of the active beam splitter is used to periodically read the electrical operating parameters of the multi-channel DC power management module, collect the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulate the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
[0057] Specifically, the active optical splitter integrates an MCU module, which performs the following operations according to a preset acquisition cycle (e.g., once every 30 seconds): First, it uses its digital communication interface ( The MCU module periodically reads the registers of the power management chip in the multi-channel DC power management module to obtain the electrical operating parameters of each downstream port, including the real-time output voltage, real-time output current, chip junction temperature, and fault flag bits of each port. Simultaneously, it acquires the analog temperature signals generated by thermistors at each opto-connector port through its ADC sampling interface and converts them into real-time temperature data at each connector end. Subsequently, the MCU module encapsulates the read electrical operating parameters and the converted real-time temperature data into a status monitoring data frame according to a preset data frame format (e.g., a fixed 32-byte structure). Finally, the MCU module actively sends the status monitoring data frame outwards via its built-in Bluetooth communication module in the form of Bluetooth broadcast or Bluetooth Mesh messages, providing a data foundation for subsequent multi-channel reporting.
[0058] Each sub-gateway is connected to the optoelectronic hybrid connector port of the active optical splitter via a POF hybrid optical cable; the sub-gateway is used to scan and receive status monitoring data frames sent by the active optical splitter, and embed the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forward them to the main gateway through the PON optical fiber network.
[0059] Please see Figure 3On the one hand, the sub-gateway, as the end access device of the FTTR network, connects to the optoelectronic hybrid connector port of the active optical splitter via a POF hybrid cable, providing network access services to end users. On the other hand, as a forwarding node for the status data of the active optical splitter, the sub-gateway undertakes the function of bridging wireless Bluetooth data to the wired optical fiber network. Specifically, each sub-gateway's firmware adds Bluetooth scanning and parsing functions, enabling it to continuously scan its surrounding environment and receive status monitoring data frames sent by nearby active optical splitters via Bluetooth broadcast or Bluetooth Mesh messages. Upon receiving the status monitoring data frame, the sub-gateway parses it and embeds the parsed status monitoring data frame into a reserved field of its optical module's Digital Diagnostic Monitoring Information (DDMI). In one specific embodiment, the sub-gateway writes the data into the DDMI's reserved field 0x1E, which follows the data encoding rules of the "user-defined monitoring field" defined in the ITU-T G.984.2 standard (Type-Length-Value format, Type value is 0x0A, Length value is 32 bytes) to carry the status monitoring data frame. After the embedding is completed, the sub-gateway forwards the status monitoring data frame along with the service data to the main gateway through the PON fiber optic network.
[0060] The main gateway is used to receive data from the first reporting channel and the second reporting channel in parallel. The first reporting channel data is a status monitoring data frame sent by the active optical splitter through the Bluetooth channel, and the second reporting channel data is a status monitoring data frame forwarded by the sub-gateway through the PON optical fiber network. The main gateway is also used to perform consistency processing on the first reporting channel data and the second reporting channel data received from the same active optical splitter, and to perform fault diagnosis and output the diagnosis results based on the data reception status and the service status of the sub-gateway.
[0061] Specifically, the main gateway has dual data reception capabilities: on the one hand, the main gateway integrates or has an external Bluetooth module to directly receive the first reporting channel data sent by the active optical splitters via the Bluetooth channel; on the other hand, the main gateway connects to the PON fiber optic network through its PON port to receive the second reporting channel data forwarded by the sub-gateways via the DDMI channel. In actual operation, the main gateway monitors these two reporting channels in parallel, continuously collecting status monitoring data from all active optical splitters in the network.
[0062] For the same active optical splitter, the main gateway may simultaneously receive its status monitoring data frames from both the first reporting channel (Bluetooth channel) and the second reporting channel (PON fiber network channel). The main gateway's network management system performs consistency processing on these two data streams, specifically including: comparing the content consistency of the two data streams, recording the arrival time of each data stream, and calculating the reception success rate of each data stream. In normal mode, the main gateway prioritizes the data from the first reporting channel because its update latency is lower (typically less than 300 milliseconds). If the main gateway fails to receive data from the first reporting channel of an active optical splitter for several consecutive cycles, it automatically determines that the Bluetooth wireless channel of that active optical splitter may be faulty and then switches to using the second reporting channel as the source of status information for that active optical splitter.
[0063] Based on this, the main gateway's network management system performs intelligent fault diagnosis and outputs diagnostic results according to the data reception status and the service status of the sub-gateways. The specific diagnostic logic is as follows: if only the first reporting channel data is missing while the second reporting channel data is normal, the diagnosis is a Bluetooth channel fault; if both the first and second reporting channel data are missing, the diagnosis is an active optical splitter device fault or power outage; if the first reporting channel data is normal but the service data and digital diagnostic monitoring information of the corresponding active optical splitter's subordinate sub-gateways are missing, the diagnosis is a PON fiber optic network fault between the active optical splitter and the sub-gateways. Through this diagnostic mechanism, the main gateway can accurately distinguish different levels of fault types, providing clear fault location guidance for maintenance personnel.
[0064] Through the above system architecture and workflow, the FTTR multi-level network monitoring system described in this embodiment achieves real-time monitoring and reliable reporting of the operating status of active optical splitters in multi-level cascaded networks without the need for additional data cabling. Furthermore, through a dual-channel redundancy mechanism and intelligent diagnostic logic, it significantly improves the operation and maintenance efficiency and fault location accuracy of the FTTR network.
[0065] Based on the FTTR multi-level network monitoring system described in the above embodiments, this embodiment also provides an FTTR multi-level network monitoring method. Please refer to [link to relevant documentation]. Figure 4 The method includes:
[0066] The MCU module of the active beam splitter periodically reads the electrical operating parameters of the multi-channel DC power management module, collects the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulates the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively sends the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
[0067] The sub-gateway scans and receives status monitoring data frames sent by the active optical splitter, and embeds the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forwards them to the main gateway through the PON optical fiber network.
[0068] The main gateway receives data from the first reporting channel and the second reporting channel in parallel. The first reporting channel data is a status monitoring data frame sent by the active optical splitter via the Bluetooth channel, and the second reporting channel data is a status monitoring data frame forwarded by the sub-gateway via the PON fiber optic network. The main gateway performs consistency processing on the first reporting channel data and the second reporting channel data received from the same active optical splitter, and performs fault diagnosis and outputs the diagnosis results based on the data reception status and the service status of the sub-gateway.
[0069] It is understood that since the FTTR multi-level networking supervision method described in this embodiment is based on the FTTR multi-level networking supervision system described in the embodiment, the method disclosed in the embodiment is relatively simple to describe because it corresponds to the system disclosed in the embodiment. For relevant parts, please refer to the description of the system.
Claims
1. An active beam splitter, characterized in that, include: The power conversion module has an input terminal for connecting to an external AC power source and an output terminal for outputting DC power to power the various modules inside the active optical splitter. A multi-channel DC power management module has its input terminal electrically connected to the output terminal of the power conversion module. Its output terminal includes multiple downstream ports for connecting to lower-level devices. The multi-channel DC power management module integrates a power management chip, which distributes DC power to each downstream port, monitors the operating status of each downstream port in real time, and generates electrical operating parameters for each downstream port. These electrical operating parameters include real-time output voltage, real-time output current, chip junction temperature, and fault flags. The power management chip also includes a digital communication interface for outputting these electrical operating parameters. Multiple optoelectronic hybrid connector ports are provided, each corresponding to a downstream port for connecting to a POF optoelectronic hybrid cable to output DC power and transmit fiber optic signals. Each optoelectronic hybrid connector port is equipped with a thermistor, which is used to sense the temperature of the corresponding optoelectronic hybrid port connector end and generate a corresponding temperature analog signal. The MCU module has its power supply terminal electrically connected to the internal low-voltage output terminal of the power management chip and is directly powered by the power management chip. The MCU module includes a digital communication interface and an ADC sampling interface. Its digital communication interface is connected to the digital communication interface of the power management chip to periodically read the electrical operating parameters. Its ADC sampling interface is electrically connected to each thermistor to receive the temperature analog signal and convert it into real-time temperature data at each optoelectronic hybrid port connector. The MCU module is used to encapsulate the read electrical operating parameters and converted real-time temperature data according to a preset data frame format to generate a status monitoring data frame, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module.
2. The active beam splitter according to claim 1, characterized in that, The MCU module reads the predetermined register address range of the power management chip through its digital communication interface to obtain the real-time output current, bus input voltage, chip junction temperature and hardware fault flag bits of multiple downlink ports of the multi-channel DC power management module.
3. The active beam splitter according to claim 1, characterized in that, The preset data frame format is a fixed-length structure, which includes a frame header, device identifier, status flag, power parameter data segment, temperature data segment, checksum, and frame tail in sequence. When the MCU module reports periodically or when an event triggers a report, it fills in the read electrical operating parameters and the converted real-time temperature data according to the fields and sends them through a Bluetooth broadcast packet or Bluetooth data channel.
4. An FTTR multi-level network monitoring system, characterized in that, The system includes: At least one active beam splitter as described in any one of claims 1 to 3, wherein the MCU module of the active beam splitter is used to periodically read the electrical operating parameters of the multi-channel DC power management module, collect the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulate the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively send the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module; Multiple sub-gateways are provided, each connected to the optoelectronic hybrid connector port of the active optical splitter via a POF hybrid optical cable. The sub-gateway is used to scan and receive status monitoring data frames sent by the active optical splitter, and embed the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forward them to the main gateway through the PON optical fiber network. A main gateway is used to receive data from a first reporting channel and a second reporting channel in parallel. The first reporting channel data consists of status monitoring data frames sent by an active optical splitter via a Bluetooth channel, and the second reporting channel data consists of status monitoring data frames forwarded by a sub-gateway via a PON fiber optic network. The main gateway is also used to perform consistency processing on the first and second reporting channel data received from the same active optical splitter, and to perform fault diagnosis and output diagnostic results based on the data reception status and the service status of the sub-gateway.
5. The FTTR multi-level networking monitoring system according to claim 4, characterized in that, The sub-gateway writes the parsed status monitoring data frame into a reserved field of digital diagnostic monitoring information. This reserved field follows the data encoding rules of the optical module digital diagnostic monitoring standard and is used to carry the status monitoring data frame.
6. The FTTR multi-level networking monitoring system according to claim 4, characterized in that, The main gateway listens to the first reporting channel data and the second reporting channel data in parallel. In normal mode, the main gateway uses the first reporting channel data. If it does not receive the first reporting channel data of a certain active optical splitter for several consecutive cycles, it switches to using the second reporting channel data as the source of status information for that active optical splitter.
7. The FTTR multi-level network monitoring system according to claim 4, characterized in that, Multiple active optical splitters automatically form a wireless mesh network through the Bluetooth communication module built into their MCU modules; the active optical splitter in the middle cascade position broadcasts its own status monitoring data frame while acting as a relay node to forward the status monitoring data frames of the lower-level active optical splitter. The relay selection strategy is based on the received signal strength and network layer, selecting nodes that face the main gateway and have a received signal strength higher than a preset threshold for forwarding.
8. The FTTR multi-level networking monitoring system according to claim 4, characterized in that, When the MCU module of the active optical splitter detects that the electrical operating parameters or real-time temperature data exceed a predetermined alarm threshold, it triggers an alarm mode. After triggering the alarm mode, the MCU module broadcasts the alarm via Bluetooth and simultaneously sends the alarm data in the next reporting cycle through the reserved field of the digital diagnostic monitoring information of the sub-gateway.
9. The FTTR multi-level network monitoring system according to claim 4, characterized in that, The fault diagnosis logic of the main gateway includes: If only the first reporting channel data is missing while the second reporting channel data is normal, the diagnosis is a Bluetooth channel failure. If both the first and second reporting channels are missing data, the diagnosis is a fault or power outage of the active optical splitter equipment. If the data from the first reporting channel is normal, but the service data and digital diagnostic monitoring information of the corresponding sub-gateway under the active optical splitter are missing, then the diagnosis is a PON fiber optic network fault between the active optical splitter and the sub-gateway.
10. A multi-level FTTR network monitoring method, characterized in that, Applied to the FTTR multi-level network monitoring system as described in any one of claims 4 to 9, the method comprises: The MCU module of the active beam splitter periodically reads the electrical operating parameters of the multi-channel DC power management module, collects the real-time temperature data of the thermistors at each optoelectronic hybrid connector port through the ADC sampling interface, encapsulates the read electrical operating parameters and the collected real-time temperature data into a status monitoring data frame according to a preset data frame format, and actively sends the status monitoring data frame to the outside world in the form of Bluetooth broadcast or Bluetooth Mesh message through its built-in Bluetooth communication module. The sub-gateway scans and receives status monitoring data frames sent by the active optical splitter, and embeds the parsed status monitoring data frames into the reserved field of digital diagnostic monitoring information of its optical module, and forwards them to the main gateway through the PON optical fiber network. The main gateway receives data from the first reporting channel and the second reporting channel in parallel. The first reporting channel data is a status monitoring data frame sent by the active optical splitter via the Bluetooth channel, and the second reporting channel data is a status monitoring data frame forwarded by the sub-gateway via the PON fiber optic network. The main gateway performs consistency processing on the first reporting channel data and the second reporting channel data received from the same active optical splitter, and performs fault diagnosis and outputs the diagnosis results based on the data reception status and the service status of the sub-gateway.