CN112070653A

CN112070653A - Loongson-based graphic display control module in military airborne cockpit display system

Info

Publication number: CN112070653A
Application number: CN202010729498.0A
Authority: CN
Inventors: 靳宇鹏; 潘静; 周赛赛; 刘旺; 李骏
Original assignee: Hengyu Xintong Aviation Equipment Beijing Co ltd
Current assignee: Hengyu Xintong Aviation Equipment Beijing Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-12-11

Abstract

The invention discloses a godson-based graphic display control Module in a military airborne cockpit display system, wherein an embedded processor is used as a core, a COM Express Type6 standard interface is adopted, and a godson 2H processing Module compatible with an APU-S7 daughter card is compatible, wherein +5V is input by a TYPE6 interface and is converted into voltages of 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V, so that the power is supplied to the whole Module, a clock circuit generates 100MHz, 25MHz, 12MHz and 32.768KHz for a Module circuit to use, the embedded processor is used as a control and data processing center, and the core of the whole Module is simplified in circuit design and complete in function; the reliability is strong, the power consumption is low, the anti-interference capability is strong, and the structural design is stable and reliable; the selected components have high localization rate. The main interfaces and functions are multiple, and the man-machine efficacy is effectively improved.

Description

Loongson-based graphic display control module in military airborne cockpit display system

Technical Field

The invention relates to the field of aviation, in particular to a graphical display control module based on a dragon core in a military airborne cockpit display system.

Background

The avionics system mainly aims to improve the ability of a pilot to know the situation of a battlefield, and plays an important role in improving the operational capacity of an airplane and reducing the task load of the pilot. The cockpit Display control system cds (cockpit Display system) is the core and key for realizing the integration, digitization and intelligence of a new generation avionics system. In the avionics display control system, a graphic Processing chip GPU (graphical Processing unit) is one of the core devices of the avionics display control system, and with the increase of the information amount of a cockpit, displays of a digital instrument, a digital map, multi-target information display, radar infrared remote sensing images and the like all need a display with higher resolution to solve the problem of information display, so that higher requirements are placed on the performance of the GPU, and high-performance graphic generation capability is required to be provided under embedded environmental conditions (low power consumption, light weight and high reliability).

With the development of avionic devices, more and more avionic devices are integrated into an airplane, a pilot needs to process a large amount of information, and the structural form of the traditional and mutually independent electronic devices is difficult to meet the use requirement, so that the development of a cockpit display system is imperative, and in order to achieve the purpose of specific combat, the avionic technology is vigorously developed in foreign aviation countries, and corresponding development plans are formulated, such as a super cockpit and a panoramic cockpit control display system PC-CADS of the united states air force, a virtual cockpit plan VCP developed by the british national defense research institute, an interactive large-screen display plan of france, and the like, so as to meet the tactical requirements of advanced warplanes.

Through the preliminary research and the development of a plurality of model tasks, a series of key technologies and difficulties related to the engineering development of a new generation of warplane cockpit display system in China are broken through, the diversification of product varieties and functions, the serialization of specifications and the flexibility of interfaces are realized, particularly, the application of an independently developed high-speed graphic technology obviously improves the picture display quality, and greatly reduces the gap between the airborne cockpit display field and developed countries in China. However, the investment in the aspects of panoramic cockpit display, three-dimensional stereo display and the like needs to be increased in China, key technologies are broken through, the system design is perfected, the levels of integration, digitization and intellectualization of the display system are further improved, and a nationwide display control system is designed and developed according to the requirements of a large-screen display system of a cockpit of a certain machine type. The display control unit can realize the output display of two 1280X1024@60p (two output paths are spliced into a large-screen display) graphic image systems, the windowing, overlapping and zooming display of two input video signals, and the display control unit is provided with communication interface circuits such as gigabit Ethernet and RS 422. The cross-linking of the system control system with other components is shown in figure 1. The data of each sensor on the airplane is processed by the data acquisition and processing unit to form a network data frame, the data frame is sent to the display processing unit of the comprehensive display through the network interface, and the display processing unit receives the data frame, performs data fusion and image processing and finally completes image display. The system adopts a modular design, is divided into a display control unit, a data processing unit and a multifunctional control panel according to functions, each unit consists of a universal field replaceable module, the standardization degree is high, and the maintainability of the system is improved.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is to provide a graphical display control module based on a dragon core in a military airborne cabin display system with better effect.

The godson-based graphic display control Module in the military airborne cockpit display system is characterized in that an embedded processor is a core, a COM Express Module Type6 standard interface is adopted, the godson 2H processing Module compatible with an APU-S7 daughter card is compatible with the TYPE6 interface, the +5V input voltage is converted into 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V voltage, the power is supplied to the whole Module, a clock circuit generates 100MHz, 25MHz, 12MHz and 32.768KHz to be used by a Module circuit, and the embedded processor is a control and data processing center which is the core of the whole Module.

The external +5V power supply generates 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V power after DC-DC (or LDO) conversion.

The embedded processor is a Loongson 2H, a PCIE bus of the Loongson 2H can serve as an RC (remote component) or an EP (end point), and when the PCIE bus serves as the RC, a PCIE interface of the Loongson 2H can serve as a PCIE port of X4 or 4 independent PCIE ports of X1; when the Loongson 2H processing module is used as an EP, the PCIE interface of the Loongson 2H can be used as 1 PCIE interface of X4/X1, the PCIE controller of the Loongson 2H comprises No. 0-3 ports, 4 PCIE ports are totally used, the port No. 0 can work in a mode of X4/X1, the port No. 1-3 can only work in a mode of X1, the port No. 0-3 can be used as the RC, but only the port No. 0 can be used in an X4 mode, when the PCIE interface is used as the EP, only the port No. 0 can be used, each PCIE port has an independent PCI address space, the Loongson 2H processing module uses 4 groups of ports, and the working mode of X1 is adopted.

The embodiment of the invention has the following beneficial effects:

the graphical display control module based on the Loongson in the military airborne cockpit display system has the advantages of simple circuit design and complete functions; the reliability is strong, the power consumption is low, the anti-interference capability is strong, and the structural design is stable and reliable; the selected components have high localization rate. The main interfaces and functions are multiple, and the man-machine efficacy is effectively improved.

Drawings

FIG. 1 is a prior art graphical display system cross-link diagram;

FIG. 2 is an internal functional block diagram of a Loongson 2H processing module according to an embodiment of the present invention;

fig. 3 is a power supply topology diagram of an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

In the dragon-based graphic display control Module in the military airborne cockpit display system in the embodiment of the invention, an embedded processor is used as a core, a COM Express Type6 standard interface is adopted, and a dragon 2H processing Module compatible with an APU-S7 daughter card is adopted, wherein +5V is input by a TYPE6 interface and is converted into voltages of 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V, so that the power is supplied to the whole Module, a clock circuit generates 100MHz, 25MHz, 12MHz and 32.768KHz for a Module circuit to use, and the embedded processor is used as a control and data processing center and is used as the core of the whole Module. The external +5V power supply generates 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V power after DC-DC (or LDO) conversion. The embedded processor is a Loongson 2H, a PCIE bus of the Loongson 2H can serve as an RC (remote component) or an EP (end point), and when the PCIE bus serves as the RC, a PCIE interface of the Loongson 2H can serve as a PCIE port of X4 or 4 independent PCIE ports of X1; when the Loongson 2H processing module is used as an EP, the PCIE interface of the Loongson 2H can be used as 1 PCIE interface of X4/X1, the PCIE controller of the Loongson 2H comprises No. 0-3 ports, 4 PCIE ports are totally used, the port No. 0 can work in a mode of X4/X1, the port No. 1-3 can only work in a mode of X1, the port No. 0-3 can be used as the RC, but only the port No. 0 can be used in an X4 mode, when the PCIE interface is used as the EP, only the port No. 0 can be used, each PCIE port has an independent PCI address space, the Loongson 2H processing module uses 4 groups of ports, and the working mode of X1 is adopted.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. The utility model provides a graphical display control module based on godson among military airborne cockpit display system which characterized in that: the embedded processor is a core, adopts a COM Express Type6 standard interface, is compatible with a Loongson 2H processing Module of an APU-S7 daughter card, converts +5V input of the TYPE6 interface into voltages of 0.75V, 1.15V, 1.5V, 1.8V, 2.5V and 3.3V, supplies power for the whole Module, generates 100MHz, 25MHz, 12MHz and 32.768KHz generated by a clock circuit and is used by a Module circuit, and is a control and data processing center as the core of the whole Module.

2. The dragon core based graphic display control module of claim 1, wherein the external +5V power supply is DC-DC (or LDO) converted to generate 0.75V, 1.15V, 1.5V, 1.8V, 2.5V, 3.3V power supply.

3. The Loongson-based graphic display control module in the military airborne cockpit display system of claim 2, wherein the embedded processor is Loongson 2H, PCIE buses of Loongson 2H can be used as both RC (root complex) and EP (end point), and when acting as RC, PCIE interfaces of Loongson 2H can be used as both PCIE ports of X4 and 4 independent PCIE ports of X1; when the Loongson 2H processing module is used as an EP, the PCIE interface of the Loongson 2H can be used as 1 PCIE interface of X4/X1, the PCIE controller of the Loongson 2H comprises No. 0-3 ports, 4 PCIE ports are totally used, the port No. 0 can work in a mode of X4/X1, the port No. 1-3 can only work in a mode of X1, the port No. 0-3 can be used as the RC, but only the port No. 0 can be used in an X4 mode, when the PCIE interface is used as the EP, only the port No. 0 can be used, each PCIE port has an independent PCI address space, the Loongson 2H processing module uses 4 groups of ports, and the working mode of X1 is adopted.