Vehicle-mounted open type general information communication integration framework based on LRM

Abstract

The utility model discloses a vehicle-mounted open type general information communication integrated framework based on an LRM. The vehicle-mounted open type general information communication integrated framework comprises a general LRM bearing rack, a bus exchange control module, a power supply module, a fan module and at least one general information communication module, the universal LRM bearing rack is connected with the bus exchange control module, the power module and the universal information communication module through buses, and the fan module is arranged at the bottom of the universal LRM bearing rack. The universal LRM bearing rack comprises a back plate assembly, a rack frame, a shock absorber and a rear panel assembly. And the bus exchange control module, the general information communication module and the power supply module are inserted from the front side of the general LRM bearing rack to be butted and interconnected, and are interconnected through a power bus through backplane exchange, IP KVM, management, expansion and power supply. The vehicle-mounted electronic information system can be integrated to form various vehicle-mounted electronic information systems, has good installability, maintainability and expansibility, improves destroy resistance and severe environment resistance, and realizes flexible, rapid and comprehensive integration of the system.

Description

Technical Field

[0001] The utility model relates to the technical field of modular comprehensive integration architecture of vehicle-mounted electronic information systems, and in particular to an LRM-based vehicle-mounted open universal information communication integration framework. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] A Line Replaceable Module (LRM) is a general term for various general-purpose units with relatively independent installation structures and functions. They have standard dimensions and interfaces, and the built-in test (BIT) system can locate and isolate faults down to the LRM level. It is a modular design concept for electronic equipment that has evolved with the development of avionics systems.

[0004] The development of avionics systems from the early 20th century to the present can be divided into four stages: discrete systems, federated systems, integrated systems, and advanced integrated systems. The new generation of avionics systems introduces concepts such as distributed processing and resource sharing, all of which are based on modularity.

[0005] The current LRM module standards are mainly divided into SEM-E standard, ASAAC standard, VITA-48 and VITA-58 standards. These standard modules are generally installed in closed or semi-closed chassis. The electrical interconnection mainly includes power supply and distribution, power conversion, data interaction, bus interconnection, physical addressing and external transfer functions.

[0006] The SEM-E module standard was released the earliest and is primarily used in the design and implementation of internal functional boards for electronic equipment in marine and aviation applications. This series of LRM modules is available in five sizes. The SEM-E module has a length of 169.67mm, a width of 149.35mm, and five thicknesses, with a standard thickness of 9.652mm.

[0007] The ASAAC module standard is an avionics architecture standard issued by the European ASAAC. It defines the functions, interfaces, and design recommendations for common functional modules. The ASAAC module dimensions are compatible with the European ASAAC standard, with a length of 233.45mm, a width of 160mm, and a thickness of 20mm, 30mm, or 40mm.

[0008] The VITA-48 module standard is a commercial and open LRM standard developed by VITA, primarily used for the design and implementation of internal boards in embedded computers or industrial control equipment. The VITA-48 module's form factor is compatible with traditional VME modules and is available in three sizes: 3U (100mm × 160mm), 6U (233mm × 160mm), and 9U (366mm × 400mm), with a module pitch of 25.4mm. The VITA-58 standard specifies a different LRM module, achieving a fully enclosed single-module design that effectively withstands salt spray and rain environments, meeting electromagnetic compatibility requirements.

[0009] With rapid technological advancements, the functional integration of in-vehicle electronic information systems is becoming increasingly complex, environmental adaptability requirements are becoming increasingly stringent, and the demand for equipment structure and form is becoming increasingly compact. Consequently, a more integrated structure is required to meet these requirements. Introducing the LRM concept from avionics systems into in-vehicle electronic information system integration will promote modularization, integration, and standardization of in-vehicle electronic information system integration, particularly in the military sector. This will enable in-vehicle electronic information systems to adapt to diverse environments, including high altitudes, extreme cold, humid conditions, and jungle environments, while also enhancing capabilities such as flexible deployment and rapid maintenance.

[0010] Currently, traditional in-vehicle electronic information systems are often composed of a large number of Line Replaceable Units (LRUs). These LRUs are designed as separate "black boxes" connected to each other via in-vehicle interconnect cables. Each LRU performs a specific function and is composed of multiple Shop Replaceable Units (SRUs). This traditional in-vehicle electronic information system integration architecture has the following major problems:

[0011] (1) The in-vehicle electronic information system is composed of several independent devices, with a low degree of modularization and integration. The devices are large and heavy, with different shapes and sizes. The depth and breadth of standardization are insufficient. The distance between the devices is large and the structure is loose, which makes the overall size and weight large. In some applications, although LRM technology is used, it is mainly a simple LRM chassis or a dedicated device for a specific purpose or function. There is no open modular integrated platform architecture, which cannot well meet the requirements of miniaturization, lightweighting, rapid integration, and flexible expansion of the in-vehicle electronic information system.

[0012] (2) There is a lack of a unified backplane bus definition, especially the 10 Gigabit Ethernet bus and IPKVM bus, which cannot achieve the comprehensive electronic integration of functional services such as network switching, information processing, communication transmission, radio stations, and Beidou time system.

[0013] (3) Poor maintainability. Traditional on-board electronic information system equipment is a sealed chassis, and the chassis panel needs to be removed for maintenance. Fault location can generally only be located at the LRU level. When a fault occurs, the entire system must be shut down and the entire LRU removed before repair and replacement can be carried out. With a three-level maintenance system, relay-level maintenance requires a large amount of fixed facilities, equipped with specialized instruments and professional technicians. This not only increases the complexity of maintenance work, but also is not conducive to the flexibility of mobile system deployment and transfer.

[0014] (4) Traditional in-vehicle electronic information system equipment is diverse in types, interfaces are complex and diverse, and integration is difficult.

[0015] (5) Poor scalability and inconvenient upgrades. Traditional in-vehicle electronic information systems consist of devices of varying sizes and lack a standardized electronic-mechanical interface. System improvements require changes to the system structure and the addition of new, independent devices, which hinders the modification, upgrade, and application of new technologies in in-vehicle electronic information systems.

[0016] (6) In-vehicle electronic information systems, especially those used in the military field, have high requirements for the integration and operability of equipment, and also need to take into account heat dissipation, environmental resistance and electromagnetic compatibility issues. Traditional in-vehicle electronic information system equipment based on the LRU structure is mostly installed in a separate chassis to solve the problems of heat dissipation, environmental resistance and electromagnetic compatibility. It has low integration and occupies a large space. There are many SRUs. If an SRU fails, the entire LRU will be paralyzed. In addition, the limited cooling capacity and poor thermal control capabilities of the LRU chassis itself also lead to low system reliability. Compared with the LRM module, it is more difficult to achieve environmental resistance and high reliability.

[0017] (7) Heavy backup. Traditional vehicle electronic information systems are backed up in units of LRU, which results in a heavy system backup burden in actual use and increases logistical pressure.

[0018] (8) Long development cycle and high lifecycle costs. Traditional in-vehicle electronic information systems are made of single independent devices interconnected by cables. To build different systems, the single independent devices must be redeveloped or improved, which greatly increases the overall development cycle. The extensive use of single independent devices in design, operation, and maintenance results in high production costs, a large number of spare parts, and high lifecycle costs. Summary of the Invention

[0019] The technical problem to be solved by the utility model is to provide an LRM-based vehicle-mounted open universal information communication integration framework in view of the deficiencies in the existing technology.

[0020] A vehicle-mounted open universal information and communication integration framework based on LRM includes a universal LRM carrier frame, a bus switching control module, a power module, a fan module and at least one universal information and communication module; the universal LRM carrier frame is respectively connected to the bus switching control module, the power module and the universal information and communication module via a bus, and the fan module is arranged at the bottom of the universal LRM carrier frame.

[0021] The universal LRM load-bearing rack includes a backplane assembly, a rack frame, shock absorbers, and a rear panel assembly. The various electronic information function modules are inserted into the front side of the integrated frame for docking and interconnection; the bus switching control module is inserted into the slot and connected to the universal information communication module through the backplane switching, IP KVM, management, expansion, and system bus; the power module is inserted into the slot and connected to and powered by other modules through the backplane power bus; the fan module is installed at the bottom of the universal LRM load-bearing rack using a box-type pull-out structure to form an air duct for forced air cooling and heat dissipation of the various electronic information function modules.

[0022] Furthermore, the universal LRM carrier rack includes a backplane assembly, a rack frame, shock absorbers, a rear panel assembly, and a locking assembly. The backplane assembly is mounted within the rack frame to connect the various modules, the shock absorbers are located at the bottom of the rack frame, and the rack frame is equipped with locking assemblies to secure the modules. The universal LRM carrier rack provides a direct 24V DC power supply. It also provides a bus switching control slot, a power supply slot, a general information and communication slot, and mounting locations for fan modules. It also offers Gigabit Ethernet and 10 Gigabit Ethernet interfaces.

[0023] Furthermore, the backplane assembly is equipped with six types of buses, including a power bus, a management bus, a switching bus, a time system bus, an expansion bus, and an IPKVM bus. The intranet bus of the switching bus includes a Gigabit bus and a 10 Gigabit bus. The Gigabit bus interface uses a Gigabit Ethernet interface, and the 10 Gigabit bus interface uses a 10 Gigabit Ethernet interface. The backplane assembly includes a high-speed passive bus board, a dual-cavity LRM socket connector, a single-cavity LRM socket connector, a fan control connector, and an external signal output connector. The backplane assembly is installed in the rack frame.

[0024] The high-speed passive bus board provides power, management, switching, time synchronization, IP KVM, and an expansion bus to interconnect signals between various functional service modules and implement input and output pathways. Signals include at least management, data, voice, video, and time synchronization. It forms a DC power supply circuit for each functional service module, including direct DC 24V power supply and isolated DC 24V power conversion power supply, and reserves interconnection pathways. Multiple LRM-based in-vehicle open universal information and communication integrated frameworks are interconnected through bus cascading.

[0025] Furthermore, the bus exchange control module includes a CPU unit, an intranet exchange unit, an extranet exchange unit, an FPGA unit, an IPMB unit, a power supply unit and other circuits. The CPU unit is the main control system, the FPGA unit processes programmable IP data forwarding and customized IP messages that are independent of the protocol, and the IPMB unit provides 2-way I 2 C bus, the external network switching unit provides 11 Gigabit Ethernet electrical interfaces, 2 10 Gigabit Ethernet interfaces and 2 time system cascade interfaces, and the IPMB unit provides 2 I 2 The C bus implements management functions for each functional business module; the FPGA unit uses the backplane timing signal as input and outputs a timing interface for timing cascade.

[0026] Furthermore, the dimensions of the bus switching control module are: 40mm (width) × 195mm (height) × 250mm (depth), and the panel dimensions are 40mm (width) × 210mm (height), excluding connectors and protrusions; the front panel of the bus switching control module is provided with a U-shaped handle, a power switch, a configuration / maintenance interface, and an indicator light, and the rear panel is provided with a dual-cavity LRM plug connector connected to the backplane.

[0027] Specifically, the bus switching control module has at least IP data switching function, realizing unicast, multicast and broadcast message forwarding; routing function, supporting static and dynamic routing; VLAN function; multicast function; second / third layer switching function; spanning tree protocol function; configuration management function; ACL function; status indication function; chassis and module monitoring and alarm function; power-on management function of each general information communication module; and dynamic control function of fan speed.

[0028] Furthermore, the framework includes two power modules that support balancing. The modules provide isolated conversion of 24V DC power, with a single module providing no less than 1200W of power. They also support hot-swappable 24V power supplies and can provide both 12V and 24V power.

[0029] Furthermore, the dimensions of the power module are: 40mm (width) × 195mm (height) × 250mm (depth), and the panel dimensions are 40mm (width) × 210mm (height), excluding connectors and protrusions; the front panel of the power module is provided with a U-shaped handle, a power switch, and an indicator light, and the rear panel is provided with a single-cavity LRM plug connector connected to the backplane.

[0030] Furthermore, the fan module includes a first fan, a second fan, a fan drive board, and a fan housing. The first fan, second fan, and fan drive board are each housed within the fan housing. The fan housing has an independent cavity to accommodate the fan drive board, and the seams of the independent cavity are made of conductive shielding material. The fan module is installed as a separate module at the bottom of the universal LRM support frame. It is a pull-out box that can be blindly inserted, facilitating fan maintenance. The fan module provides forced air cooling, has an adjustable speed, and operates from a 24V DC power supply.

[0031] Furthermore, the universal information communication module is provided with a free area, which is reserved for a position of a separately led interface connector. The universal information communication module adopts the BeiDou-3 timing protocol standard for unified timing.

[0032] Furthermore, the dimensions of the universal information and communication module are: 40mm (width) × 195mm (height) × 250mm (depth), and the panel dimensions are 40mm (width) × 210mm (height), excluding connectors and protrusions. The front panel of the universal information and communication module is equipped with a U-shaped handle, a power switch, a configuration / maintenance interface, and an indicator light. The rear panel is equipped with a dual-cavity LRM plug connector connected to the backplane. The rear panel has a free area of ​​40mm × 50mm, reserved for a separate interface connector. The universal information and communication module is a set of functional business resources that can be integrated and modularly integrated by the LRM-based in-vehicle open universal information and communication integration framework.

[0033] Furthermore, the rack frame includes an upper side plate, a left side plate, a right side plate, a rear side plate, guide pins, guide rails, and a bottom plate, and a pressure plate and a protective net are installed on the bottom plate.

[0034] Furthermore, the shock absorber includes a shock absorbing device and a mounting base plate thereof. The shock absorber is mounted at the bottom of the rack frame. Four shock absorbing devices are arranged at the four corners of the bottom of the rack frame. The shock absorber is mounted and fixed on its mounting base plate, so that the LRM-based vehicle-mounted open general information and communication integrated framework has the ability to resist vibration and impact.

[0035] Furthermore, the rear panel assembly at least includes a rear panel, an external interface connector, a filter, and a grounding column, and the rear panel assembly is installed on the back of the rack frame.

[0036] Furthermore, the locking assembly is used for tool-free installation and removal of the LRM functional module, and is in the form of a butterfly locker, installed on the upper and lower sides of the front of the rack frame.

[0037] Furthermore, the bus exchange control module, power supply module and general information communication module are respectively provided with guide sleeves and guide grooves to guide the rapid disassembly and assembly of the modules.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) The present invention adopts the field replaceable module (LRM) technology to construct an LRM-based vehicle-mounted open universal information and communication integration framework, including a universal LRM carrier frame, a bus exchange control module, a power supply module, a fan module and a universal information and communication module, forming a compact, standardized and universal vehicle-mounted electronic information system open modular comprehensive integration platform, rather than a simple LRM chassis or a special device for a specific purpose / function, thereby better realizing the miniaturization, lightweight, rapid integration and flexible expansion of the vehicle-mounted electronic information system.

[0040] (2) This utility model defines six buses: power supply, management, switching, time synchronization, expansion, and IP KVM through backplane component design, achieving comprehensive electronic integration of functional business modules such as network switching, information processing, communication transmission, radio stations, and Beidou time synchronization. Specifically, the 10 Gigabit Ethernet bus and the IPKVM bus are defined, which enhances the integration capabilities of the integrated framework and provides a wider range of application scenarios.

[0041] (3) The utility model uses the bus exchange control module and the management bus design. Each LRM module has a BIT function, which can isolate the fault to each module. Each LRM module is installed on the universal slot of the open rack, and there is no need to remove the chassis panel when plugging and unplugging. The locking assembly is used for tool-free installation and removal of the LRM functional module, which is convenient for disassembly. The fan module is a pull-out type of group box, which can be blindly inserted, making it easy to maintain the fan. Each LRM module has a standard telecommunications and mechanical interface. When a fault occurs, just remove the faulty module and replace it with a new one, and the vehicle electronic information system can be restored to normal. The traditional three-level maintenance system is simplified to a two-level maintenance system, which reduces the training and skill requirements for maintenance personnel, thereby having good installability and improving maintainability.

[0042] (4) The present invention solves the problems of a wide variety of on-board electronic information system equipment, complex and diverse interfaces, and difficulty in integration by standardizing interconnection interfaces and structural integration standards.

[0043] (5) Each LRM functional business module of the utility model has a unified standard external size and electronic mechanical interface. When the vehicle-mounted electronic information system is improved, only new modules need to be added without changing the system structure, which enhances the scalability and interchangeability, is conducive to the modification, upgrading and application of new technologies of the vehicle-mounted electronic information system, and is easy to form standardized and serialized products.

[0044] (6) The utility model is doubly protected by the LRM module shell and the universal LRM bearing frame; the fan drive board and the high-speed passive bus board are placed inside the independent cavity, and the joints between the independent cavity and the cover plate are shielded and sealed with conductive shielding materials. The LRM module, backplane assembly and fan assembly each have independent electromagnetic compatibility and sealing; a shock absorber is provided to have the ability to resist vibration and impact; an integrated integrated framework that is resistant to harsh vehicle use environments and highly reliable is formed, thereby improving the reliability of the vehicle-mounted electronic information system. It is particularly suitable for military equipment or other types of applications with high requirements on reliability and other aspects, and has high promotion and application value.

[0045] (7) The LRM functional business module of the present invention is equivalent to the function of a single independent device in the original vehicle-mounted electronic information system. At the same time, LRM functional business modules of the same type are universal. During the backup process of the vehicle-mounted electronic information system, the LRM functional business module can be directly used as the backup unit, reducing the backup burden and logistical pressure.

[0046] (8) The present invention adopts different functional business modules in a manner similar to building blocks to quickly and flexibly build different vehicle-mounted electronic information systems, thereby greatly shortening the development cycle and reducing the total life cycle cost.

[0047] The integrated framework has the advantage of field-replaceable LRM, defines six buses: power supply, management, switching, time system, expansion and IP KVM, and realizes the comprehensive electronic integration of functional modules such as network switching, information processing, communication transmission, radio station, Beidou time system, etc. It adopts forced air cooling for heat dissipation, has a compact structure, small size, light weight, good installability, maintainability and scalability, can be used in harsh vehicle use environments, better realizes the rapid integration and flexible expansion of vehicle-mounted electronic information systems, and further improves the modular comprehensive integration efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0049] Figure 1 Composition diagram of the LRM-based in-vehicle open general information and communication integration framework.

[0050] Figure 2 Overall schematic diagram of the LRM-based in-vehicle open universal information and communication integration framework.

[0051] Figure 3 Exploded diagram of the LRM-based in-vehicle open universal information and communication integration framework.

[0052] Figure 4 Schematic diagram of the universal LRM load-bearing frame.

[0053] Figure 5 Backplane assembly structure diagram Figure 1 .

[0054] Figure 6 Backplane assembly structure diagram Figure 2 .

[0055] Figure 7 Block diagram of the working principle of the high-speed passive bus board.

[0056] Figure 8 Rack frame structure diagram Figure 1 .

[0057] Figure 9 Rack frame structure diagram Figure 2 .

[0058] Figure 10 Rear panel component structure diagram Figure 1 .

[0059] Figure 11 Rear panel component structure diagram Figure 2 .

[0060] Figure 12 Schematic diagram of the bus exchange control module's dimensions.

[0061] Figure 13 Overall schematic diagram of the bus exchange control module.

[0062] Figure 14 Block diagram of the working principle of the bus exchange control module.

[0063] Figure 15 Overall schematic diagram of the power module.

[0064] Figure 16 Fan module structure diagram Figure 1 .

[0065] Figure 17 Fan module structure diagram Figure 2 .

[0066] Figure 18 Overall schematic diagram of the general information and communication module. DETAILED DESCRIPTION

[0067] The legends in the attached drawings are: 1-Universal LRM carrier rack; 101-Backplane assembly; 1011-High-speed passive bus board; 1012-Dual-cavity LRM socket connector; 1013-Single-cavity LRM socket connector; 1014-Fan control connector; 1015-External signal output connector; 1016-First grounding column; 102-Rack frame; 1021-Upper side panel; 1022-Left side panel; 1023-Right side panel; 1024-Rear side panel; 1025 -Guide pin; 1026-Guide rail; 1027-Base plate; 1028-Pressure plate; 1029-Protective net; 103-Shock absorber; 104-Rear panel assembly; 1041-Rear panel; 1042-External interface connector; 1043-Filter; 1044-Second grounding post; 1045-Cable tray; 105-Locking assembly; 2-Bus switching control module; 201-First handle; 202-First power switch; 203-First configuration / maintenance interface; 204 -First indicator light; 205-First dual-cavity LRM plug connector; 206-First guide sleeve; 207-First housing; 208-First guide slot; 3-Power module; 301-Second handle; 302-Second power switch; 303-Second indicator light; 304-Single-cavity LRM plug connector; 305-Second guide sleeve; 306-Second housing; 307-Second guide slot; 4-Fan module; 401-First fan, 402-Second fan, 403-Fan drive Dynamic board; 404-fan housing; 405-handle; 406-mounting ear; 407-captive screw; 408-fan control connector; 409-guide pin; 5-general information communication module; 501-third handle; 502-third power switch; 503-third configuration / maintenance interface; 504-third indicator light; 505-third dual-cavity LRM plug connector; 506-third guide sleeve; 507-third housing; 508-third guide groove; 509-free zone.

[0068] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and drawings. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of protection claimed, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0069] like Figure 1-Figure 3As shown, the utility model provides an LRM-based on-vehicle open universal information communication integrated framework mainly composed of a universal LRM carrier frame 1, a bus switching control module 2, a power module 3, a fan module 4 and a universal information communication module 5. Ten slots are set in the integrated framework device, which can be used to install ten functional modules, including a bus switching control module 2, seven universal information communication modules 5 and two power modules 3.

[0070] The fan module 4 is used to cool the bus switching control module 2 , the power module 3 and the general information communication module 5 . The general LRM carrier rack 1 and the fan module 4 form an air duct.

[0071] like Figure 4 As shown, the universal LRM support frame 1 mainly consists of a backplane assembly 101, a frame 102, a shock absorber 103, a rear panel assembly 104, and a locking assembly 105, and provides a direct 24V DC power supply. The backplane assembly 101 is mounted in the frame 102, the shock absorber 103 is installed at the bottom of the frame 102, and the rear panel assembly 104 is installed at the back of the frame 102.

[0072] like Figure 5 and Figure 6 As shown, the backplane assembly 101 includes a high-speed passive bus board 1011, a dual-cavity LRM receptacle connector 1012, a single-cavity LRM receptacle connector 1013, a fan control connector 1014, an external signal output connector 1015, and a first grounding post 1016. Backplane assembly 101 is installed within rack frame 102 and enables communication between the rack and the outside world via adapter connectors, providing power supply, fan control, bus interconnection, and external signal output. The dual-cavity LRM receptacle connector 1012 and the single-cavity LRM receptacle connector 1013 are located on one side of the high-speed passive bus board 1011, while the fan control connector 1014, the external signal output connector 1015, and the first grounding post 1016 are located on the other side of the high-speed passive bus board 1011.

[0073] Further, if Figure 8 and Figure 9 The figure shows the working principle of the high-speed passive bus board. It provides six types of buses: power bus, management bus, switching bus, time system bus, expansion bus, and IPKVM bus. It provides physical connection paths for power and signals for each module, mainly used to realize signal interconnection and signal input and output between functional modules, and can provide DC power to each functional module.

[0074] The power bus is divided into a DC 24V direct supply bus and a DC 24V power isolation conversion bus; the DC 24V direct supply bus processes the external DC 24V input through the universal LRM carrier rack 1 to form a direct power supply for each slot; the DC 24V power isolation conversion bus processes the external DC 24V input through the power module 3 to form 12V and 24V power supplies for each slot and fan.

[0075] Management bus is 2-way I 2 The C management bus uses a redundant design to monitor and control module status. It is responsible for functional module management and can power on and off rack equipment as needed.

[0076] The switching bus is divided into an intranet switching bus (referred to as the intranet bus) and an extranet switching bus (referred to as the extranet bus). These buses are connected to the intranet switching module (referred to as the intranet module) and extranet switching module (referred to as the extranet module) of the bus switching control module, respectively. The two switching modules are isolated from each other. The intranet bus includes a Gigabit bus and a 10 Gigabit bus. The Gigabit bus interface uses a Gigabit Ethernet interface, and the 10 Gigabit bus interface uses a 10 Gigabit Ethernet interface.

[0077] The timing bus is used for clock and time synchronization, including 1PPS and TOD signals. When multiple LRM-based vehicle-mounted open universal information communication integrated frameworks are cascaded, the bus exchange control module completes the cascade transmission of timing signals.

[0078] Expansion Bus: Two expansion buses are designed between each two adjacent universal modules, configured as input and output to achieve full-duplex communication. This provides functional business integration expansion capabilities for the LRM-based in-vehicle open universal information and communication integration framework.

[0079] The IPKVM bus provides KVM codec network exchange data access capabilities.

[0080] like Figure 3 As shown, the rack frame 102 includes 1021 - upper side plate; 1022 - left side plate; 1023 - right side plate; 1024 - rear side plate; 1025 - guide pins; 1026 - guide rails; 1027 - bottom plate; 1028 - pressure plate; 1029 - protective net

[0081] like Figure 3 、 Figure 8 and Figure 9As shown, the rack frame 102 includes an upper side panel 1021, a left side panel 1022, a right side panel 1023, a rear side panel 1024, guide pins 1025, guide rails 1026, and a bottom panel 1027. A pressure plate 1028 and a protective net 1029 are mounted on the bottom panel. Each slot in the rack frame 102 is designed with two upper and lower guide rails 1026 and a pair of metal guide pins 1025, primarily providing initial guidance for module insertion. A protective net 1028 and pressure plate 1028 are mounted below the bottom panel 1027 to protect the fan. To ensure the overall electromagnetic shielding performance of the enclosure, conductive rubber strips are bonded to the seams of the rear side panels for electromagnetic sealing.

[0082] The shock absorber 103 includes a shock absorbing device and a mounting base thereof. Four shock absorbing devices are provided at the four corners of the bottom of the rack frame. The mounting base is fixedly mounted on the rack frame 102 to reduce the impact damage of vibration shock on the LRM-based vehicle-mounted open universal information and communication integrated framework.

[0083] like Figure 10 and Figure 11 As shown, the rear panel assembly 104 includes at least a rear panel 1041, an external interface connector 1042, a filter 1043, a grounding post 1044, and a cable tray 1045. The rear panel 1041 serves as the external interface mounting panel for the LRM-based vehicle-mounted open universal information and communication integrated framework, and is used for arranging and wiring electronic components. The external interface connector 1042 includes at least a Gigabit Ethernet interface, a 10 Gigabit Ethernet optical interface, a cascade optical interface, an IP KVM optical interface, a DC 24V power input interface, and a rack number knob. To ensure the overall electromagnetic shielding performance of the device, conductive rubber strips are used for electromagnetic sealing at the seams between the rear panel 1041 and the cabinet, and at the mounting holes for the connector 1042 and filter 1043. A second grounding post 1044 is provided on the rear panel 1041 to ensure stable operation of the electrical system. A cable tray 1045 is located inside the rear panel assembly 104.

[0084] Furthermore, the LRM-based in-vehicle open universal information and communication integrated framework receives DC24V from an external power supply, which is processed by the universal LRM carrier frame 1 and supplied to the modules in the slots. The universal LRM carrier frame 1 power supply as a whole has at least on / off control, overcurrent protection, and short-circuit protection functions.

[0085] The locking assembly 105 is used for tool-free installation and removal of the LRM functional module. It adopts the form of a butterfly locker and is installed on the upper and lower sides of the front of the rack frame 102 to achieve fixed locking of the LRM functional module.

[0086] like Figure 12As shown, the bus exchange control module 2 has a structural size of 40mm (width) × 195mm (height) × 250mm (depth), and a panel size of 40mm (width) × 210mm (height), excluding connectors and protrusions. Figure 11 As shown, the front panel of the bus switching control module 2 is provided with a first handle 201, a first power switch 202, a first configuration / maintenance interface 203 and a first indicator light 204, the rear panel is provided with a first double-cavity LRM plug connector 205 connected to the backplane, and the first shell 207 of the bus switching control module 2 is provided with a first guide sleeve 206 and a first guide groove 208 to ensure the rapid expansion of the frame.

[0087] Further, if Figure 14 As shown, the bus switching control module 2 includes a CPU unit, an intranet switching unit, an extranet switching unit, an FPGA unit, an IPMB unit, a power supply unit and other circuits.

[0088] The CPU unit completes the main control function. The FPGA unit completes the programmable IP data forwarding and customized IP message processing that is independent of the protocol, uses the backplane timing signal as input, and outputs the timing interface for timing cascade. The IPMB unit provides 2-way I 2 The C bus completes the management functions of the LRM-based vehicle-mounted open universal information and communication integration framework, including reading and adjusting the fan speed.

[0089] The switching unit is divided into two independent units: the intranet and the extranet. It performs Ethernet data exchange and IP data forwarding, providing external Ethernet Gigabit and 10 Gigabit interfaces. The extranet unit provides 11 Gigabit Ethernet electrical interfaces (W_GE1 to W_GE11), two 10 Gigabit Ethernet interfaces (W_10G1 to W_10G2), and two time-synchronized cascade optical interfaces (T_10G1 to T_10G2) via backplane connectors, along with 15 network indicators on the front panel. The intranet unit provides 11 Gigabit Ethernet electrical interfaces (N_GE1 to N_GE11), nine IP KVM interfaces (I_GE1 to I_GE9), and 11 10 Gigabit Ethernet interfaces (N_10GE1 to N_10GE11) via backplane connectors, along with 31 network indicators on the front panel.

[0090] The power module 3 has a structural dimension of 40 mm (width) × 195 mm (height) × 250 mm (depth), and a panel dimension of 40 mm (width) × 210 mm (height), excluding connectors and protrusions. Figure 15As shown, the front panel of the power module 3 is equipped with a second handle 301, a second power switch 302, a second indicator light 303, and a single-cavity LRM plug connector 304, which is connected to the back panel. The second housing 306 of the power module 3 is provided with a second guide sleeve 305 and a second guide groove 307 to ensure rapid expansion of the frame.

[0091] Furthermore, the power module 3 provides DC 24V power isolation conversion, and the power provided by a single module is not less than 1200W. Another DC 24V input power source is processed by the universal LRM carrier frame 1 and provided to the power module 3 via the power slot. The DC / DC converter of the power module 3 then outputs 12V and 24V, completing the 24V isolation conversion. The DC-DC converter adopts a cascade power conversion topology with communication parallel technology and can withstand harsh environments and heat dissipation requirements.

[0092] like Figure 16 and Figure 17 As shown, the fan module 4 primarily consists of a first fan 401, a second fan 402, a fan drive board 403, and a fan housing 404. The first fan 401, second fan 402, and fan drive board 403 are mounted within the fan housing 404. Inside the fan housing 404, three second fans 402 are arranged in the center, and two first fans 401 are arranged on either side. The fans are variable-speed and powered by a 24V DC power supply. The fan module 4 is equipped with mounting ears 406 and captive screws 407 to facilitate installation. Handles 405 are located on both sides of the front to facilitate manual insertion and removal of the module. Guide pins 409 are provided to guide the module's insertion and removal, ensuring alignment.

[0093] The fan module 4 is installed as a separate module at the bottom of the universal LRM support frame 1. It is a pull-out assembly that can be blindly inserted and manually operated, making it easy to maintain the fan. An independent cavity is designed within the fan housing 404, and the fan drive board 403 is placed inside the cavity to drive the fan. The bus switching control module 2 controls the fan speed by detecting the temperature of each module in the entire machine, realizing the cooling system control function. The fan drive board 403 uses a temperature measurement chip, and when the ambient temperature is too low, the fan stops. The seam between the independent cavity and the cover is shielded and sealed with conductive shielding material to ensure the electromagnetic shielding performance of the fan module 4.

[0094] The structural dimensions of the universal information communication module 5 are: 40mm (width) × 195mm (height) × 250mm (depth), and the panel dimensions are 40mm (width) × 210mm (height), excluding connectors and protrusions. Figure 18As shown, the front panel of the universal information and communication module 5 is equipped with a third handle 501, a third power switch 502, a third configuration / maintenance port 503, and a third indicator light 504. The rear panel is equipped with a third dual-chamber LRM plug connector 505 for connection to the backplane. The rear panel has a free area of ​​40 mm x 50 mm, reserved for a separate interface connector. The housing of the universal information and communication module 5 houses the information and communication function board. The third housing 507 of the universal information and communication module 5 is equipped with a third guide sleeve 506 and a third guide groove 508 to ensure rapid expansion of the frame. The rear panel has a free area 509 of 40 mm x 50 mm, reserved for a separate interface connector.

[0095] Furthermore, the general information communication module 5 can provide wired communication, wireless communication, computing, network control, media processing, time synchronization and other functions as well as other functions derived from specific needs according to the application scenarios or usage requirements of the vehicle-mounted electronic information system; the general information communication module 5 can connect to the power bus, management bus, switching bus, time synchronization bus, expansion bus, and IP KVM bus of the general LRM carrier rack 1 as required; the general information communication module 5 uses a DC 24V direct power supply or power supply module 3 as required; the general information communication module 5 adopts the BeiDou-3 timing protocol standard to provide unified timing according to the required connection to the time synchronization bus.

[0096] This utility model provides an LRM-based, open, and universal vehicle-mounted information and communication integration framework. There are numerous methods and approaches for implementing this technical solution. The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art may make improvements and modifications without departing from the principles of this utility model, and such improvements and modifications should be considered within the scope of protection of this utility model. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. An LRM-based vehicle-mounted open universal information and communication integration framework, characterized in that: The invention comprises a universal LRM carrier frame (1), a bus exchange control module (2), a power supply module (3), a fan module (4) and at least one universal information communication module (5); the universal LRM carrier frame (1) is respectively connected to the bus exchange control module (2), the power supply module (3) and the universal information communication module (5) via a bus, and the fan module (4) is arranged at the bottom of the universal LRM carrier frame (1).

2. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1 is characterized in that: The universal LRM bearing rack (1) comprises a back panel assembly (101), a rack frame (102), a shock absorber (103), a rear panel assembly (104) and a locking assembly (105); the back panel assembly (101) is arranged in the rack frame (102) to connect various modules, the shock absorber (103) is arranged at the bottom of the rack frame (102), and the rack frame (102) is provided with a locking assembly (105) to fasten a bus exchange control module, a power module and a universal information communication module.

3. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 2, characterized in that: The backplane assembly (101) is provided with 6 types of buses, including a power bus, a management bus, a switching bus, a time system bus, an expansion bus, and an IPKVM bus; the intranet bus of the switching bus includes a Gigabit bus and a 10 Gigabit bus, the Gigabit bus interface adopts a Gigabit Ethernet interface, and the 10 Gigabit bus interface adopts a 10 Gigabit Ethernet interface.

4. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1, characterized in that: The bus exchange control module (2) comprises a CPU unit, an intranet exchange unit, an extranet exchange unit, an FPGA unit, an IPMB unit and a power supply unit; the CPU unit is a main control system, the FPGA unit processes programmable IP data forwarding and customized IP messages that are independent of the protocol, and the IPMB unit provides 2-way I 2 C bus, the external network switching unit provides 11 Gigabit Ethernet electrical interfaces, 2 10 Gigabit Ethernet interfaces and 2 time system cascade interfaces.

5. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 4 is characterized in that: The structural dimensions of the bus exchange control module are: width, height and depth: 40mm×195mm×250mm, and the panel dimensions are: width and height: 40mm×210mm, excluding connectors and protrusions.

6. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1, characterized in that: The frame comprises two power modules (3), the power modules (3) providing DC 24V power isolation conversion, and the power provided by a single power module (3) is not less than 1200W.

7. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1, characterized in that: The fan module (4) comprises a first fan (401), a second fan (402), a fan drive plate (403) and a fan casing (404); the first fan (401), the second fan (402) and the fan drive plate (403) are respectively arranged in the fan casing (404), and the fan casing (404) is provided with an independent cavity to accommodate the fan drive plate (403).

8. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 7, characterized in that: The seams of the independent cavities are covered with conductive shielding materials.

9. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1, characterized in that: The universal information communication module (5) is provided with a free area (509), and the free area (509) is reserved as a position for a separately led interface connector.

10. The LRM-based vehicle-mounted open universal information and communication integration framework according to claim 1, characterized in that: The bus exchange control module (2), the power supply module (3) and the general information communication module (5) are respectively provided with a guide groove and a guide sleeve that cooperates with the installation end.

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