CN205354341U - Optic fibre collector based on adapted lightning communication chip - Google Patents

Abstract

The utility model discloses an optical fiber collector based on an electro-optical communication chip, comprising: an optical network unit ONU, an optical module, a main control module, a clock circuit, a storage circuit, and a power supply. The optical module is connected; the optical network unit ONU, the optical module, the clock circuit, and the storage circuit are respectively connected to the main control module; the main control module is connected to an external smart meter, and the main control The module also communicates with external monitoring equipment; the power supply supplies power for the optical network unit ONU, the optical module, the main control module, the clock circuit and the storage circuit. The optical fiber collector of the utility model has the characteristics of high speed, high safety, high stability, etc., converts the exponential rate data signal into an optical signal, uses optical fiber as the communication medium, and realizes the meter index rate data collection in the form of an optical fiber collector. Optical communication transmission.

Description

An optical fiber collector based on an electro-optical communication chip

technical field

The utility model relates to the field of electricity information collection and transmission, in particular to an optical fiber collector based on an electro-optical communication chip.

Background technique

In recent years, in the construction process of the power consumption information collection system of the national grid power users, the technologies adopted include low-voltage power line carrier, short-range wireless, public network PSTN/GPRS (PSTN: Public Switched Telephone Network, public switched telephone network), EPON (Ethernet Passive Optical Network, Ethernet passive optical network), etc. Among them, the power line carrier is a low-speed and unreliable channel, which is difficult to meet the real-time and reliability requirements of power information collection; wireless communication (230Mhz) has problems such as susceptibility to interference and network coverage from the technical mechanism, which is difficult to Realize full coverage and full collection. The operation, maintenance and control of public network communication methods such as PSTN/GPRS/CDMA are in the hands of telecom service providers, which cannot meet the network security and information security required by the special network for electric power communication.

With the wide application of EPON technology in public network access communication technology, EPON technology has advantages in networking reliability, bandwidth allocation, low maintenance cost, and network scalability. The required power access application. The EPON-based power consumption information collection system is mainly composed of terminal equipment with ONU (Optical Network Unit, optical network unit) function single-phase meter/three-phase meter/collector/concentrator through OLT (optical line terminal, optical line terminal) and backbone network Communicate with the master station of the acquisition system to complete the formation of optical fiber links.

Existing optical fiber collectors are Ethernet passive optical network unit (EPONONU) equipment, which can provide single-phase/three-phase smart meter RS485 interface sub-rate data uplink communication connection, but due to the particularity of the power consumption information collection system itself and the connection The large number of single-phase/three-phase smart meters and other characteristics make it difficult for the current fiber optic collector equipment to efficiently and safely support the power consumption information collection business:

1. The existing optical fiber collector equipment does not fully have the Q/GDW376.1 protocol conversion (or transparent transmission) capability, and it is difficult to meet the functional requirements of smart meter electricity consumption information, cost control information and low-voltage distribution network line information data upload;

2. The existing optical fiber collector needs to be further improved in design to enhance equipment information security and reduce equipment cost and power consumption;

3. The existing optical fiber collector equipment does not have the network management function, and it is impossible to perform online query, configuration, management, remote upgrade and other control and management operations on the fiber optic collector.

At present, in the cities where the state grid system uses EPON-based fiber optic collectors, the core chips, main components and core technologies of the equipment are directly from abroad, and there are the following problems:

(1) Developed based on the commercial requirements of the public network, without fully considering the requirements of the power operation environment, there may be hidden dangers of information security backdoors;

(2) The power consumption of the equipment is large and the cost is high;

(3) In the system network management, the device network management cannot manage the user ports, which is not conducive to equipment fault location and difficult to operate and maintain.

Utility model content

In order to solve the technical problems of poor transparent transmission capability and high power consumption of the optical fiber collector in the prior art, the utility model proposes an optical fiber collector based on an electro-optical communication chip.

A kind of optical fiber collector based on the electro-optic communication chip of the present utility model comprises:

An optical network unit ONU, an optical module, a main control module, a clock circuit, a storage circuit, and a power supply, and the optical network unit ONU is connected to the optical module;

The optical network unit ONU, the optical module, the clock circuit, and the storage circuit are respectively connected to the main control module; the main control module is connected to an external smart meter, and the main control module is also connected to an external monitoring device to communicate;

The power supply supplies power to the optical network unit ONU, the optical module, the main control module, the clock circuit and the storage circuit.

Preferably, the main control module includes:

4-way RS232/485 interface, remote monitoring module, RJ45 interface, local monitoring module, the main control module is connected to an external smart meter through the 4-way RS232/485 interface;

The remote monitoring module is connected to the optical network unit ONU and the optical module respectively;

The RJ45 interface is connected with the optical network unit ONU;

The main control module communicates with external monitoring equipment through the local monitoring module.

Preferably, the local monitoring module is a UART or an Ethernet interface.

Preferably, the main control module is connected to 1-32 external smart meters through the 1-way RS232/485 interface.

Preferably, the optical network unit ONU is connected to the RJ45 interface of the main control module through a transformer.

Preferably, the optical network unit ONU is connected to the optical module through its own serial-to-parallel converter serdes.

Preferably, one end of the optical fiber collector is connected to the smart meter, and the other end is sequentially connected to the switch through the optical splitter and the optical link terminal OLT, and the switch is also connected to the gateway server and the main station server through the backbone network.

The optical fiber collector based on the electro-optical communication chip of the present utility model aims at the problems of large power consumption and high cost of the current power consumption information collection terminal equipment. On the premise of ensuring the information security of the power consumption information collection system, by using The power consumption and cost reduction design ensures the low power consumption and low cost of the fiber optic collector. In the application networking scenario of the fiber optic collector, not only the meter data is uploaded to the master station, but also the network management functions such as online configuration and remote monitoring of the fiber optic collector are realized. The optical fiber collector of the utility model has the characteristics of high speed, high safety, high stability, etc., converts the exponential rate data signal into an optical signal, uses optical fiber as the communication medium, and realizes the meter index rate data collection in the form of an optical fiber collector. Optical communication transmission. In order to ensure the information security of the fiber optic collector equipment, reduce power consumption, cost, etc., the fiber optic collector equipment is designed based on the independent intellectual property rights dedicated optical communication chip for power distribution, which can realize the original power consumption efficiently, in real time and safely. Information collection function, and at the same time, the equipment can be managed online.

Description of drawings

Fig. 1 is the structural representation of the optical fiber collector based on the electro-optic communication chip of the utility model;

Fig. 2 is a schematic diagram of the networking work of the utility model based on the optical fiber collector equipped with an electro-optical communication chip.

detailed description

Several specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

In order to solve the technical problems of poor transparent transmission capability and high power consumption of the optical fiber collector in the prior art, the utility model proposes an optical fiber collector based on an electro-optical communication chip.

The utility model designs an optical fiber collector according to relevant standards such as Q/GDW373-380-2009 and DL/T698-2009 of the State Grid Corporation of China, adopts an optical communication chip ONU dedicated to power distribution and consumption with independent intellectual property rights, and provides single-phase/three-phase intelligent RS485 interface sub-rate data uplink communication connection of electric meter, supports DL/T645200797 protocol to Q/GDW376.1 protocol conversion (or transparent transmission), can transmit smart meter electricity consumption information, cost control information, smart meter information and low-voltage distribution network line information data. The configuration can be modified by local or remote network management. The network management interface also provides traffic statistics, connection rate and other detailed information, and supports remote upgrades, remote settings and other remote operations.

The utility model is designed with an independent optical communication chip for power distribution and consumption, adopts a low power consumption design, reduces the power consumption of the whole device, and adopts chip PAD (Packet Assembler And Disassembler, providing terminal to host link service) reinforcement and other technologies to increase the chip The electromagnetic compatibility performance effectively reduces the cost of the whole equipment, adapts to the requirements of the power communication environment, and realizes the information security of the power consumption information collection system.

As shown in Figure 1, the optical fiber collector based on the electro-optical communication chip of the present invention includes: an optical network unit 1, an optical module 2, a main control module 3, a clock circuit 4, a storage circuit 5, and a power supply 6, The optical network unit 1 is connected to the optical module 2; the optical network unit 1, the optical module 2, the clock circuit 4, and the storage circuit 5 are respectively connected to the main control module 3; the The main control module 3 also communicates with external monitoring equipment; the power supply 6 supplies power for the optical network unit 1 , the optical module 2 , the main control module 3 , the clock circuit 4 , and the storage circuit 5 .

The optical network unit 1, the optical network unit 1 adopts a dedicated optical communication chip ONU for power distribution with independent intellectual property rights, ONU (Optical Network Unit) optical network unit, and the ONU is divided into an active optical network unit and a passive optical network unit. Its function is to select and receive broadcast data sent by OLT; respond to ranging and power control commands sent by OLT; .

The optical network unit 1 of the present utility model is composed of a dedicated communication ONU chip for power distribution and its peripheral circuits independently developed by Beijing Zhixin Microelectronics Technology Co., Ltd. The uplink is connected to the optical module 2 through its own serial-to-parallel converter Serdes interface, and the downlink A network port signal is output through the transformer to connect with the RJ45 interface 33 of the main control module 3, and the optical network unit 1 forms a complete optical fiber link with the external OLT equipment. The optical network unit 1 supports a 10/100Mbps RJ45 interface, and integrates a 10/100Mbps adaptive PHY and MAC in the ONU main chip to reserve a communication channel with the external backbone network. In the present invention, the function of the optical network unit 1 is to send the received electric meter data optical signal to an external server.

The optical module 2 provides an optical signal exchange channel between the main control module 3 and the optical network unit 1 . The optical module (optical module) is composed of optoelectronic devices, functional circuits and optical interfaces, etc. The optoelectronic devices include two parts: transmitting and receiving. The function of the optical module 2 is photoelectric conversion. The transmitting end converts the electrical signal into an optical signal. After transmission through the optical fiber, the receiving end converts the optical signal into an electrical signal. In the present invention, the function of the optical module 2 is to convert the electric meter data received by the main control module 3 into an optical signal and send it to the optical network unit 1 .

Main control module 3. The function of the main control module 3 is to obtain the data of the external smart meter and to monitor the operation status of the optical network unit 1 and the optical fiber collector in real time. The main control module 3 includes: 4-way RS232/485 interface 31, remote monitoring module 32, RJ45 interface 33, local monitoring module 34, the main control module 3 communicates with the external smart meter through the 4-way RS232/485 interface 31 Connected, the utility model can provide 4-way RS232/485 interface, define and provide TTL level, and perform level conversion through an external RS232/485 level conversion chip to realize the conversion between RS232 interface and RS485 interface. Each RS232/485 interface 31 can be connected with 32 external smart meters at most.

The remote monitoring module 32 is connected to the optical network unit 1 and the optical module 2 respectively, and is used for monitoring the operation status of the optical network unit 1 and the optical module 2 .

The RJ45 interface 33 is connected to the optical network unit 1; the main control module 3 communicates with an external monitoring device through the local monitoring module 34, and sends the operation status data of the optical fiber collector to the external monitoring device. The local monitoring module 34 is a UART or an Ethernet interface.

The clock circuit 4 is used to provide an external reference clock for the optical network unit 1 . A clock circuit is an oscillation circuit that produces an accurate clock. Any work is in chronological order. The circuit used to generate this time is the clock circuit. The clock circuit is generally composed of a crystal oscillator, a crystal shock control chip and a capacitor. The clock circuit 4 can adopt any clock circuit in the prior art.

The storage circuit 5 is used to store the configuration information of the optical network unit 1 and the entire fiber collector, and save the status data of the fiber collector during operation. Storage circuit, that is, memory (Memory) is a memory device used to store information in modern information technology. In a digital system, as long as it can store binary data, it can be a memory; in an integrated circuit, a device without physical form has a storage function. The circuit is also called memory, such as RAM, FIFO and so on. The storage circuit 5 may adopt any storage circuit in the prior art.

The power supply 6 is used to provide working power for the fiber optic collector.

As shown in FIG. 2 , it is a schematic diagram of the networking work of the optical fiber collector equipped with an electro-optical communication chip according to the present invention. One end of the optical fiber collector is connected to the smart meter, and the other end is connected to the switch through the optical splitter and the optical link terminal OLT in turn, and the switch is also connected to the gateway server and the main station server through the backbone network.

The optical fiber collector completes the mutual conversion between the DL/T645 protocol of the smart meter and the 376.1 protocol, and the data of the optical fiber collector is transparently transmitted to the main station through the OLT, and directly communicates with the main station. This working mode sets up the IP packet channel between the main station server and the optical fiber collector based on the transmission of 376.1 packets. At this time, the main station server only needs to provide a standard Q/GDW376.1 data interface, and the OLT is the communication channel between the main station and the terminal. In the transfer station, the optical fiber collector can be fully equipped with 128 electric meters. At the same time, the operating status of the fiber optic collector is updated in the network management server in real time to achieve manageability.

The optical fiber collector of the utility model supports up to 128 smart meters; supports conversion (transparent transmission) from DL/T645-2007, DL/T645-1997 protocol to Q/GDW376.1 protocol; supports maximum transmission distance of 20KM; supports online Remote upgrade; low power consumption, low cost, able to adapt to strong electromagnetic interference and harsh temperature environment; small size, light weight, convenient for construction in the network box, upgrade and transformation of the old network, etc.

The optical fiber collector based on the electro-optical communication chip of the present utility model aims at the problems of large power consumption and high cost of the current power consumption information collection terminal equipment. On the premise of ensuring the information security of the power consumption information collection system, by using The power consumption and cost reduction design ensures the low power consumption and low cost of the fiber optic collector. In the application networking scenario of the fiber optic collector, not only the meter data is uploaded to the master station, but also the network management functions such as online configuration and remote monitoring of the fiber optic collector are realized. The optical fiber collector of the utility model has the characteristics of high speed, high safety, high stability, etc., converts the exponential rate data signal into an optical signal, uses optical fiber as the communication medium, and realizes the meter index rate data collection in the form of an optical fiber collector. Optical communication transmission. In order to ensure the information security of the fiber optic collector equipment, reduce power consumption, cost, etc., the fiber optic collector equipment is designed based on the independent intellectual property rights dedicated optical communication chip for power distribution, which can realize the original power consumption in an efficient, real-time and safe manner. Information collection function, and at the same time, the equipment can be managed online.

The above disclosures are only a few specific embodiments of the utility model, but the utility model is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the utility model.

Claims (7)

1. the optical collector based on adapted electro-optic communication chip, it is characterised in that including:

Optical network unit ONU, optical module, main control module, clock circuit, storage circuit, power supply, described optical network unit ONU is connected with described optical module；

Described optical network unit ONU, described optical module, described clock circuit, described storage circuit are connected with described main control module respectively；Described main control module is connected with external smart ammeter, and described main control module also communicates with monitoring outlay；

Described power supply is that optical network unit ONU, optical module, main control module, clock circuit, storage circuit are powered.

2. the optical collector based on adapted electro-optic communication chip according to claim 1, it is characterised in that described main control module includes:

4 road RS232/485 interfaces, remote monitoring module, RJ45 interface, local monitor module, described main control module is connected with external smart ammeter by described 4 road RS232/485 interfaces；

Described remote monitoring module and described optical network unit ONU, described optical module are respectively connected with；

Described RJ45 interface is connected with described optical network unit ONU；

Described main control module is communicated by described local monitor module and monitoring outlay.

3. the optical collector based on adapted electro-optic communication chip according to claim 2, it is characterised in that described local monitor module is universal asynchronous receiving-transmitting transmitter UART or Ethernet Ethernet interface.

4. the optical collector based on adapted electro-optic communication chip according to claim 2, it is characterised in that described main control module is connected with outside 1-32 intelligent electric meter by described 1 road RS232/485 interface.

5. the optical collector based on adapted electro-optic communication chip according to claim 2, it is characterised in that described optical network unit ONU is connected with the RJ45 interface of described main control module by transformator.

6. the optical collector based on adapted electro-optic communication chip according to claim 1, it is characterised in that described optical network unit ONU is connected with described optical module by the staticizer serdes of self.

7. the optical collector based on adapted electro-optic communication chip according to claim 1-6 any one, it is characterized in that, one end of optical collector is connected with intelligent electric meter, the other end passes sequentially through beam splitter, optical link terminal OLT is connected with switch, and described switch is respectively connected with also by backbone network and gateway server, main website server.