A dual-machine hot standby communication system

Abstract

The present invention is a dual-machine hot standby communication system, comprising a base, a chassis installed on the base, an internal functional unit installed inside the chassis and a backplane, wherein the internal functional units are interconnected through the backplane, the main control board 1 and the main control board 2 are interconnected with the optical fiber module through the backplane network signal, the environment acquisition main board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the environment acquisition standby board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the relay main board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal, and the relay standby board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal. The present invention improves the reliability of the system. In addition, the present invention can be used as both a terminal node device and a main processing device, which facilitates the development of a large system for customers. Each intersection signal control system can switch between nodes and processors, thereby improving the reliability of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of communication interfaces, and in particular to a dual-machine hot standby communication system. Background Art

[0002] The Intersection Dual-System Hot Standby (Intersection) communication control device, developed for intelligent transportation, is primarily used for intersection signal acquisition and processing. The intersection control box provides a rich set of communication interfaces and integrates a variety of sensors, making the device more intelligent. However, existing dual-system hot standby communication systems suffer from poor reliability, as they can only serve as the primary processing device, limiting their use and making them inconvenient for customers developing large-scale systems. Summary of the Invention

[0003] The present invention aims to solve the deficiencies of the prior art and provides a dual-machine hot standby communication system.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a dual-machine hot standby communication system, characterized in that it includes a base, a chassis installed on the base, an internal functional unit installed inside the chassis and a backplane, the internal functional unit includes a main control board 1, a main control board 2, an optical fiber module, an environment acquisition main board, an environment acquisition standby board, a relay main board, a relay standby board and a power supply, the internal functional units are connected to each other through the backplane, the main control board 1 and the main control board 2 are network-interconnected with the optical fiber module through the backplane network signal, the environment acquisition main board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the environment acquisition standby board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the relay main board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal, the relay standby board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal, and the main control board 1, the main control board 2, the optical fiber module, the environment acquisition main board and the environment acquisition standby board are all connected to the power supply.

[0005] The optical fiber module consists of an optical fiber fusion box, gigabit optical module 1 and gigabit optical module 2. The main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 1, and the main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 2.

[0006] The power supply consists of four power modules for converting AC220V power to DC24V power, and two of the four power modules are connected in parallel for backup.

[0007] The main control board 1, the main control board 2, the optical fiber module, the environment collection main board and the environment collection standby board are all electrically connected to the power module.

[0008] The power module is connected to the external power supply. There are two external power supplies, one for AC220V / 50HZ power supply and the other for three-phase AC380V input. The AC380V input uses two phases of the three-phase power and a safety ground.

[0009] A lightning protection module and a filter are connected between the external power supply and the power module. The external power supply then passes through the lightning protection module and the filter to supply power to the power module.

[0010] Both main control board 1 and main control board 2 are connected to CAN lightning protection modules.

[0011] The environment collection main board and the environment collection standby board are electrically connected, and both the environment collection main board and the environment collection standby board are electrically connected with a door collection module, a temperature collection module, a humidity collection module, an AC voltage collection module, and a DC voltage and current collection module.

[0012] The door acquisition module is a travel switch installed on the chassis for detecting the switch status of the chassis door. The temperature acquisition module is a temperature sensor, the humidity acquisition module is a humidity sensor, the AC voltage acquisition module is a voltage sensor, and the DC voltage and current acquisition module is a voltage and current sensor.

[0013] A WAGO terminal is connected between the filter and the power module, and four circuit breakers are connected to the WAGO terminal.

[0014] The beneficial effects of the present invention are as follows: the present invention has two main control boards, namely main control board 1 and main control board 2, two environmental acquisition boards, namely environmental acquisition main board and environmental acquisition backup board, two relay boards, namely relay main board and relay backup board, main control board 1 and main control board 2, environmental acquisition main board and environmental acquisition backup board, relay main board and relay backup board and power supply module are all connected in a redundant structure, when one of the components is damaged, it does not affect the overall operation of the system, thereby improving the reliability of the system. In addition, the present invention applies advanced embedded technology, integrates the latest sensor technology, and combines its own powerful computing power to transfer the computing process of the large system to each node, reducing the computing processing capacity of the system. During application, the present invention can be used as both a terminal node device and a main processing device, which facilitates the development of large systems for customers. Each intersection signal control system can switch between nodes and processors, thereby improving the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the electrical function diagram A of the present invention;

[0016] Figure 2 This is the electrical function diagram B of the present invention;

[0017] Figure 3 This is a power distribution block diagram of the present invention;

[0018] Figure 4 This is the connection diagram between the main control board and the relay board;

[0019] Figure 5 It is a mechanical structure diagram of the present invention;

[0020] Figure 1 and Figure 2 The electrical functional diagram constituting the entirety of the present invention,

[0021] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and examples:

[0023] like Figures 1 to 4 As shown, a dual-machine hot standby communication system is characterized in that it includes a base, a chassis installed on the base, an internal functional unit installed inside the chassis and a backplane, the internal functional unit includes a main control board 1, a main control board 2, an optical fiber module, an environment acquisition main board, an environment acquisition standby board, a relay main board, a relay standby board and a power supply, the internal functional units are connected to each other through the backplane, the main control board 1 and the main control board 2 are interconnected with the optical fiber module through the backplane network signal, the environment acquisition main board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the environment acquisition standby board is interconnected with the main control board 1 and the main control board 2 bus through the backplane CAN bus, the relay main board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal, the relay standby board is interconnected with the main control board 1 and the main control board 2 signal through the backplane IO signal, the external interface of the present invention is all plugged into the chassis WAGO terminal through the backplane aviation plug connector, the main control board 1, the main control board 2, the optical fiber module, the environment acquisition main board and the environment acquisition standby board are all connected to the power supply.

[0024] The optical fiber module consists of an optical fiber fusion box, gigabit optical module 1 and gigabit optical module 2. The main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 1, and the main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 2.

[0025] The main control board 1, the main control board 2, the optical fiber module, the environment collection main board and the environment collection standby board are all electrically connected to the power module.

[0026] A lightning protection module and a filter are connected between the external power supply and the power module. The external power supply then passes through the lightning protection module and the filter to supply power to the power module.

[0027] Both main control board 1 and main control board 2 are connected to CAN lightning protection modules.

[0028] The environment collection main board and the environment collection standby board are electrically connected, and both the environment collection main board and the environment collection standby board are electrically connected with a door collection module, a temperature collection module, a humidity collection module, an AC voltage collection module, and a DC voltage and current collection module.

[0029] The door acquisition module is a travel switch installed on the chassis for detecting the switch status of the chassis door. The temperature acquisition module is a temperature sensor, the humidity acquisition module is a humidity sensor, the AC voltage acquisition module is a voltage sensor, and the DC voltage and current acquisition module is a voltage and current sensor.

[0030] A WAGO terminal is connected between the filter and the power module, and four circuit breakers are connected to the WAGO terminal.

[0031] The signals of the present invention are interconnected / expanded by using WAGO terminals. The external power supply of the present invention is 2-way, one of which is AC220V / 50HZ power supply, and the other is three-phase AC380V input. The AC380V input uses two phases of three-phase electricity and a safe ground, which is AC 220V. The power supply of the present invention is composed of four power modules for converting AC220V power supply into DC24V power supply, and the four power modules are backed up in parallel in pairs. The operating temperature of the power module is -25℃~+70℃. The output of the power module will be derated when it is above +60℃. According to the derated curve, the output of the power module can meet the power supply requirements of the intersection signal chassis after derated. The power module has functions such as overload protection, overvoltage protection, and overtemperature protection.

[0032] The main control board of the present invention uses an ARM core board + baseboard format, and the core board leads to RGMII signals and CAN signals. The PHY signal is used on the baseboard to convert the RGMII signal into a 100M network signal. The PHY chip selected is Qualcomm's AR8031 chip, which has the characteristics of small size and high reliability. The Zhou Ligong CAN bus module is used on the baseboard, which supports signal transmission at a maximum rate of 1MB / s.

[0033] The fiber optic module supports three Gigabit electrical ports and one Gigabit SC optical port, supporting three 10 / 100 / 1000Base-TX auto-sensing electrical ports and one auto-sensing 10 / 100 / 1000Base-TX optical port. It complies with FCC and CE standards. With an operating temperature range of -40°C to +85°C, its exceptional ruggedness allows it to withstand harsh environments and easily fit into compact control boxes.

[0034] The relay board supports 2-way relay node signals and 1-way AC36V return signal.

[0035] The environment collection board collects input data of 2-way AC220V power supply, 4-way DC24V power supply, temperature and humidity inside the chassis, and the status of the chassis door.

[0036] The protection circuit includes components such as the power supply lightning protection module and the CAN lightning protection module. The power supply lightning protection module is the SSLP-385, a parallel-type AC power surge protector. Its performance meets the CRCC product standard requirements of the Ministry of Railways and is used for lightning current protection in railway power supply systems, preventing overvoltage interference. The CAN lightning protection module is the SFLM-H5 analog and digital surge protector, which is used for lightning protection of analog and digital signals and measurement and control systems. It provides lightning protection for two-wire suspended ground electronic measurement and control system data transmission lines that require protection, such as TTY, RS422, and RS485 lines, protecting subsequent systems and equipment from damage caused by overvoltage and overcurrent due to lightning and industrial interference.

[0037] The external environment requires the chassis to be resistant to high temperatures and rain. Therefore, the chassis utilizes a double-layer structure to provide both thermal insulation and protection from rain. The overall structure is sealed, and heat dissipation is achieved through natural convection ventilation. DIN-rail modules are used throughout the chassis, including the boards and filters. The chassis consists of two parts: a base and a housing. The base has screws to secure the fiber optic splice cassette. All other components are assembled into the housing, which is secured to the base and housing with screws. A magnetic switch is placed on the door to detect whether the door is open or closed.

[0038] The basic performance indicators of the present invention are as follows:

[0039] a. The power consumption of the chassis is 300W, and the power supply cable is a dual-channel AC220V, each channel can independently provide 300W power, using a 4-core cable;

[0040] b. The optical cable uses a 6-core optical cable, the intersection control box uses a 4-core cable with 2 cores as spare, and the optical fiber interface is an SC interface;

[0041] c Gigabit optical module 1 and Gigabit optical module 2 form a network redundancy structure;

[0042] d Main control board 1 and main control board 2 constitute the core control redundant structure;

[0043] The relay main board and relay backup board form an output node redundant structure for generating two-way node signals;

[0044] f Use a dual-channel CAN network to form a ring network structure, connecting the tram-specific signal machine and the tram-specific pedestrian signal machine;

[0045] g The present invention uses one AC220V and one AC380V power supply, and draws out eight AC220V power supplies for tram / pedestrian dedicated signal machines;

[0046] h Four power modules are connected in parallel for backup in pairs, forming a redundant power supply network design to generate DC24V for use inside the box;

[0047] The input and output have lightning protection and short circuit protection modules.

[0048] The present invention has two main control boards, namely main control board 1 and main control board 2, two environmental acquisition boards, namely environmental acquisition main board and environmental acquisition backup board, two relay boards, namely relay main board and relay backup board, main control board 1 and main control board 2, environmental acquisition main board and environmental acquisition backup board, relay main board and relay backup board, and power supply module are all connected in a redundant structure. When one of the components is damaged, it does not affect the overall operation of the system, thereby improving the reliability of the system. In addition, the present invention applies advanced embedded technology, integrates the latest sensor technology, and combines its own powerful computing power to transfer the computing process of the large system to each node, reducing the computing processing capacity of the system. During application, the present invention can be used as both a terminal node device and a main processing device, which facilitates the development of large systems for customers. Each intersection signal control system can switch between nodes and processors, thereby improving the reliability of the system.

[0049] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A dual-machine hot standby communication system, characterized in that: It includes a base, a chassis installed on the base, an internal functional unit installed inside the chassis, and a backplane, wherein the internal functional unit includes a main control board 1, a main control board 2, an optical fiber module, an environment collection main board, an environment collection standby board, a relay main board, a relay standby board, and a power supply, wherein the internal functional units are connected to each other through the backplane, the main control board 1 and the main control board 2 are interconnected with the optical fiber module through a backplane network signal, the environment collection main board is interconnected with the main control board 1 and the main control board 2 bus through a backplane CAN bus, the environment collection standby board is interconnected with the main control board 1 and the main control board 2 bus through a backplane CAN bus, the relay main board is interconnected with the main control board 1 and the main control board 2 signal through a backplane IO signal, the relay standby board is interconnected with the main control board 1 and the main control board 2 signal through a backplane IO signal, and the main control board 1, the main control board 2, the optical fiber module, the environment collection main board, and the environment collection standby board are all connected to the power supply; The optical fiber module is composed of an optical fiber fusion box, a gigabit optical module 1 and a gigabit optical module 2. The main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 1, and the main control board 1 and the main control board 2 are both electrically connected to the gigabit optical module 2. The power supply consists of four power modules for converting AC220V power supply into DC24V power supply, and two of the four power modules are connected in parallel for backup.

2. The dual-machine hot standby communication system according to claim 1, characterized in that: The main control board 1, the main control board 2, the optical fiber module, the environment collection main board and the environment collection standby board are all electrically connected to the power module.

3. The dual-machine hot standby communication system according to claim 2, characterized in that: A lightning protection module and a filter are connected between the external power supply and the power module. The external power supply supplies power to the power module through the lightning protection module and the filter in turn.

4. The dual-machine hot standby communication system according to claim 1, characterized in that: Both main control board 1 and main control board 2 are connected to CAN lightning protection modules.

5. The dual-machine hot standby communication system according to claim 1, characterized in that: The environment collection main board and the environment collection standby board are electrically connected, and both the environment collection main board and the environment collection standby board are electrically connected with a door collection module, a temperature collection module, a humidity collection module, an AC voltage collection module, and a DC voltage and current collection module.

6. The dual-machine hot standby communication system according to claim 5, characterized in that: The door acquisition module is a travel switch installed on the chassis for detecting the switch status of the chassis door. The temperature acquisition module is a temperature sensor, the humidity acquisition module is a humidity sensor, the AC voltage acquisition module is a voltage sensor, and the DC voltage and current acquisition module is a voltage and current sensor.

7. The dual-machine hot standby communication system according to claim 3, characterized in that: A WAGO terminal is connected between the filter and the power module, and four circuit breakers are connected to the WAGO terminal.

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