A CPU board for a simulation machine

Abstract

The utility model provides a simulation machine CPU board, comprising a base plate and a plug-in board located at one side of the base plate; a VGA module, an Ethernet module, a PC104 module, a chip disk storage module and a bottom plate interface module are attached to the base plate; the plug-in board is provided with an extended 2-way RS232 serial port, 4 USB2.0 interfaces, 1 VGA video interface and 4 10 / 100Base‑T Ethernet interfaces; the PC104 module is plug-connected with the base plate through downward pins, and the problems of high power consumption, high cost and portability of the existing industrial simulation computer are solved through a design based on the PC104 bus, miniaturization and scalability are achieved, and the production cost and software maintenance cost are reduced compared with traditional unmanned aerial vehicle simulation equipment. At the same time, the CPU supports an RTOS real-time operating system and can complete the real-time state solution of the object unmanned aerial vehicle model.

Description

[Technical field]

[0001] The utility model relates to the technical field of CPU boards, and in particular to a simulation machine CPU board which has the advantages of high portability, scalability and stability, can run a mathematical model of an unmanned aerial vehicle, and realizes real-time solution of state quantities of the unmanned aerial vehicle simulation model. [Background Technology]

[0002] Semi-physical real-time simulation test is one of the most important tests in the development process of UAV flight control system. Since the 1990s, with the development and popularization of autonomous navigation and control technology, semi-physical real-time simulation test has developed from the original phased test to a transactional test throughout the entire development process.

[0003] The semi-physical simulation test of UAV has gone through the early analog computer technology and the distributed computer simulation technology in the mid-1990s. The development of the "Changkong" series of UAVs all adopted early analog computer simulation technology. As the computing power of early digital computers was extremely limited and could not meet the real-time solution function of the mathematical model of UAV, due to the limitations of analog computers, linear models were still mainly used in simulation tests.

[0004] With the further expansion of UAV application fields and the diversification of missions, future UAVs will adopt technologies such as intelligent control, information fusion, fault diagnosis and self-repair. The adoption of these technologies will inevitably make the mathematical model of UAV more complex, and therefore put forward higher requirements on simulation equipment. An effective way to solve the accuracy and real-time performance of complex UAV dynamic simulation is to adopt distributed simulation technology.

[0005] In order to realize the functional confirmation of each UAV before launching at the work site, a portable simulation system is very necessary. The portable simulation system has no functional difference from the conventional simulation system, but has the characteristics of small size, light weight, high system integration and easy to carry.

[0006] With the improvement of computer performance, the rapid development of integrated circuits and the maturity of digital simulation technology, it has become possible to develop integrated real-time flight simulation systems using high-performance embedded computers. [Contents of the utility model]

[0007] The problems existing in the prior art solved by this application are:

[0008] Early analog computer simulation technology, due to the extremely limited computing power of early digital computers, could not meet the real-time solution function of UAV mathematical models. Due to the limitations of analog computers, linear models were mainly used in simulation experiments.

[0009] The solution to the technical problem of the utility model is:

[0010] Provided is a simulation machine CPU board, comprising a base plate and a plug-in board located on one side of the base plate; the base plate is attached with a VGA module, an Ethernet module, a PC104 module, a chipdisk storage module and a bottom plate interface module; the plug-in board is provided with an extended 2-way RS232 serial port, 4 USB2.0 interfaces, 1 VGA video interface and 4 10 / 100Base-T Ethernet interfaces; the PC104 module is plug-connected to the base plate through downward pins.

[0011] Preferably, the baseboard interface module is a DB9 series socket structure.

[0012] Preferably, the size of the simulation machine CPU board is 174mm*192.4mm; and the thickness of the base plate is 35mm.

[0013] Preferably, the ISA bus plug of the plug board is a PDS series 120-pin aviation plug.

[0014] Preferably, the ISA bus backplane of the ISA bus plug consists of a 16-bit PC104 bus and a power bus.

[0015] The technical effects of solving the technical problem in this application are as follows:

[0016] Compared with the prior art, the utility model discloses a simulation machine CPU board which solves the problems of high power consumption, high cost and portability of the existing industrial simulation computers through the design based on PC104 bus, realizes miniaturization and scalability, and reduces the production cost and software maintenance cost compared with the traditional UAV simulation equipment. At the same time, the CPU supports RTOS real-time operation system and can complete the real-time state solution of the object UAV model. [Drawings]

[0017] Figure 1 The utility model is a three-dimensional structural diagram of a CPU board of a simulation machine.

[0018] Figure 2 The utility model is a schematic diagram of the plug-in board structure of a CPU board of a simulation machine. [Specific implementation method]

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit this utility model.

[0020] See also Figure 1 and Figure 2 The utility model provides a simulation machine CPU board 1, comprising a base plate 12 and a plug-in board 11 located at one side of the base plate 12; the base plate 12 is provided with a VGA module 13, an Ethernet module 17, a PC104 module 18, a chipdisk storage module 15 and a bottom plate interface module 16; the plug-in board 11 is provided with an extended 2-way RS232 serial port, 4 USB2.0 interfaces, 1 VGA video interface and 4 10 / 100Base-T Ethernet interfaces; the PC104 module 18 is plug-connected to the base plate 12 through downward pins.

[0021] In some other embodiments, the baseboard interface module 16 is a DB9 series socket structure.

[0022] The size of the simulation machine CPU board is 174 mm*192.4 mm; and the thickness of the base plate 12 is 35 mm.

[0023] The ISA bus plug of the plug board 11 is a PDS series 120-core aviation plug.

[0024] The ISA bus backplane of the ISA bus plug is composed of a 16-bit PC104 bus and a power bus.

[0025] This patent proposes a new type of CPU board for simulation system. Based on the PC104 bus design, it solves the problems of high power consumption, high cost and portability of existing industrial simulation computers. It achieves miniaturization and scalability, and reduces production costs and software maintenance costs compared to traditional drone simulation equipment. At the same time, the CPU supports RTOS real-time control system, which can complete the real-time state solution of the target drone model.

[0026] The CPU board adopts PC / 104 bus architecture. PC / 104 is the mechanical and electrical standard embedded in PC, which provides a standard system platform for embedded applications. It inherits the advantages of BMPC open bus structure and provides engineers who design application systems with standard, highly reliable, powerful and easy-to-use system components. It has ultra-small size, ultra-low power consumption, wide temperature characteristics and cascading mode. PC / 104 bus is compatible with ISA bus and can perform 8-bit or 16-bit data transmission. The maximum speed of bus data transmission is 8Mb / s.

[0027] The hardware structure design of the "real-time simulation equipment" emphasizes miniaturization and high integration. It uses the PC / 104 bus architecture as a platform and is equipped with corresponding functional modules. It can maximize the comprehensive functions of the system, reduce the weight and volume of the system, and is suitable for conducting experiments in a mobile environment.

[0028] The board is mainly composed of two modules: CPU minimum system and PC104 bus structure and public resources.

[0029] CPU minimum system;

[0030] Includes: CPU: Intel Pentium M processor, main frequency 1.4GHz; Chip Disk: 4GB, as operating system and application memory; DDR RAM: 512MB; Programmable watchdog: The watchdog is implemented in Super I / O, the timing range can be set to 1-255, and the time limit unit can be seconds or minutes.

[0031] PC104 bus interface;

[0032] Public resources;

[0033] Includes: 2 extended RS232 serial ports, using military DB9 sockets; 4 USB2.0 interfaces; 1 VGA video interface; 4 10 / 100Base-T Ethernet interfaces;

[0034] Compared with the simulation computers on the market, it has stronger scalability;

[0035] Its hardware structure is simpler, smaller in size and lighter in weight;

[0036] Applicable to all types of UAV simulations, with high promotion capabilities;

[0037] The composite plug board uses the universal DB series socket, which can be welded with the composite plug board and is easy to test. In addition, the DB series cable adopts welding, which is conducive to the custom production of simulation cables.

[0038] The PC104 bus module is the "big chip" of the composite plugboard. The I / O signals of the PC104 module are connected to the baseboard socket through the downward pins, realizing the cable-free connection between the PC104 module and the composite plugboard. The interface resources of the PC104 module are all led out to the DB socket after appropriate input and output conversion.

[0039] The universal ISA bus plug adopts the PDS series 120-core aviation plug. Due to the large layout of the composite plug board, the thickness of the board is 35mm in terms of technology. The universal ISA bus backplane consists of a 16-bit PC104 bus and a power bus, in which the PC104 bus is used as the connection link for each composite plug board. On the basis of the PC104 bus, multiple power supply types such as +27VDC, ±15VDC, and +5VDC are also configured, which are used for both the PC104 bus power supply and the conversion circuit of the composite plug board.

[0040] Since the bus backplane is an expandable standardized architecture, in order to ensure the driving capability and signal quality of the PC104 bus, the bus filtering technology widely used in the passive backplane of industrial control computers should be referred to when designing the backplane to ensure bus reliability.

[0041] 1. Environmental adaptability;

[0042] Working temperature: 0℃~+60℃

[0043] Storage temperature: -50℃~+65℃

[0044] 2. Reliability;

[0045] 1) It adopts mature standardized PC104 modules and can be flexibly combined according to user needs, realizing product serialization;

[0046] 2) The impact of shock and vibration on product reliability is taken into consideration in the design. Military aviation plugs are used for both plugs and sockets, and mechanical screws are added to reinforce the bus base plate and user aviation plugs.

[0047] 3) The CPU minimum system module uses an ultra-low power processor, which reduces the system heat dissipation burden;

[0048] 4) Inheriting the mature experience of standardized flight control computers, using proven and reliable circuits;

[0049] 3. Maintainability;

[0050] 1) Modular design and plug-in structure are adopted to support on-site replacement and facilitate subsequent individual upgrades;

[0051] 2) The PC104 modules on the composite plug-in board are all standard parts, which are easy to update and maintain. The CPU minimum system module and Chip Disk are both plug-in structures, which can be quickly replaced if diagnosed as a fault.

[0052] 4. Testability;

[0053] 1) Each pin on the user connection socket can be tested through a dedicated test cable.

[0054] 2) A universal backplane bus is used, which integrates the power bus and ISA parallel bus. Each pin of the backplane bus can be tested in a laboratory environment.

[0055] 3) With the help of self-test software, you can quickly test whether the function of the function board is normal, or diagnose the location of the fault;

[0056] The technical effects of solving the technical problem in this application are as follows:

[0057] Compared with the prior art, the utility model discloses a simulation machine CPU board 1 which solves the problems of high power consumption, high cost and portability of existing industrial simulation computers by designing based on PC104 bus, realizes miniaturization and scalability, and reduces production cost and software maintenance cost compared with traditional UAV simulation equipment. At the same time, the CPU supports RTOS real-time operation system and can complete real-time state solution of the object UAV model.

[0058] The above-described implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A simulation machine CPU board, characterized in that: It comprises a base plate and a plug-in board on one side of the base plate; the base plate is attached with a VGA module, an Ethernet module, a PC104 module, a chip disk storage module and a bottom plate interface module; the plug-in board is provided with an extended 2-way RS232 serial port, 4 USB2.0 interfaces, a VGA video interface and 4 10 / 100Base-T Ethernet interfaces; the PC104 module is plug-connected to the base plate through downward pins.

2. A simulation machine CPU board as claimed in claim 1, characterized in that: The baseboard interface module is a DB9 series socket structure.

3. A simulation machine CPU board as claimed in claim 1, characterized in that: The size of the simulation machine CPU board is 174mm*192.4mm; and the thickness of the base plate is 35mm.

4. A simulation machine CPU board as claimed in claim 1, characterized in that: The ISA bus plug of the plug board is a PDS series 120-core aviation plug.

5. A simulation machine CPU board as claimed in claim 4, characterized in that: The ISA bus backplane of the ISA bus plug is composed of a 16-bit PC104 bus and a power bus.

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