CN201576224U

CN201576224U - Host computer with custom interfaces

Info

Publication number: CN201576224U
Application number: CN2009202599252U
Authority: CN
Inventors: 朱明�; 罗玉刚; 李龙; 范旭
Original assignee: Zhuzhou CSR Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2010-09-08
Anticipated expiration: 2019-12-30

Abstract

A host computer with custom interfaces only comprises an ETX module (1) and an ETX carrying board (2), wherein, the ETX module (1) comprises a CPU and a memorizer which are integrated; the ETX module (1) is connected with the ETX carrying board (2) through a connector; and the ETX carrying board (2) comprises an interface circuit and a functional circuit. The device adopting the implementation scheme has the advantages that under the premise that the functions are guaranteed, the volume and the weight are reduced to the utmost extent, so that the installation, the maintenance and the use of the custom interface host computer are convenient.

Description

A kind of self defined interface main frame

Technical field

The utility model relates to computer application field, the application of especially a kind of main frame of novel self-defining interface in the railway locomotive supervisory system, and this computing machine can be integrated in the bench device, finishes the man-machine interface of bench device and handles and data processing.

Background technology

Desk-top instrumentation generally comprises three parts: man-machine interaction part (HMI), host machine part and power unit, the kind of man-machine interaction part (HMI) is a lot, the demonstration peripheral hardware that comprises color LCD screen one class of the earliest charactron, single color LCD screen and various sizes, and the operation peripheral hardware of various keyboards and mouse one class, also have the data storage peripheral hardware of CD-ROM drive, floppy drive, data storage card one class etc.

The kind of host machine part is also a lot, present desk-top instrumentation adopts single-chip microcomputer, single card microcomputer (as PC104) as host machine part (core component of data processing), for example: usually in simple equipment, often adopt liquid crystal of Micro Controller Unit (MCU) driving or charactron, as desk-top multimeter; The equipment of complicated point, then may adopt single card microcomputer (PC104 etc.) to drive color screen, as oscillograph, and the different software systems that hardware platform adopted are different, the different desk-top instrumentation of different hardware and software platform exploitations lacks general character aspect maintenance and upgrading, cause the exploitation of these equipment to lack systematicness, be unfavorable for the upgrading of product, each upgrading often means exploitation again.In addition, no matter be single-chip microcomputer or single card microcomputer, the ability of data processing (comprising Flame Image Process) is all not enough, is not suitable for the exploitation of high-grade multifunctional testing equipment.

PC is that the computing machine development is the most a kind of, powerful, the software development difficulty is low, and we wish to adopt the computer host platform of the main frame of similar PC as desk-top instrumentation, reduce development difficulty, improve product level.Main frame volume involved in the present invention is little, function is strong, rich interface, software development are simple, can be integrated in the bench device very easily.The characteristics of PC be exploitation and use simple, powerful, price is low, but ordinary PC will use in bench device some defective is significantly also arranged, the firstth, volume is big, integrated difficulty; The secondth, interface is single, can't satisfy the requirement of bench device, and as various IO signals and communication interface that testing apparatus often need be handled, ordinary PC can't be handled, and needs to increase various transaction cards and handles various signals respectively.

Prior art adopts industrial control computer (industrial computer) to realize, as the mode of grinding the 610 industrial computer series+PCI plug-in card of magnificent company, in fact this method is very ripe, but with after the industrial computer realization above-mentioned functions, volume is too big, industrial computer can't be integrated in the equipment.The mode that this employing industrial computer and PCI plug-in card are realized, not only volume is big, and weight is big, and can't be integrated in a bench device.

The utility model content

The purpose of this utility model is the deficiency at existing self defined interface main frame, a kind of self defined interface main frame based on the ETX exploitation is provided, have multiple interfaces to reach main frame, volume is little, in light weight, the purpose that can select different peripheral hardwares to meet consumers' demand.

According to the utility model, above-mentioned technical matters realizes by following technical proposals:

A kind of self defined interface main frame comprises ETX module and ETX support plate, integrated CPU in the ETX module, and parts such as storer, and link to each other with the ETX support plate by connector, comprise various interface circuit and functional circuit on the ETX support plate.

As the further embodiment of the utility model, ETX support plate interface circuit further comprises power interface circuit, usb circuit and peripheral interface circuit.ETX support plate functional circuit further comprises serial port circuit, i.e. 4 road serial expanded circuits, encrypted circuit.Power interface circuit is converted to the required DC voltage of ETX module operate as normal with input direct voltage.

As the further embodiment of the utility model, ETX support plate interface circuit further comprises the sound card interface circuit, and circuit adopts special-purpose sound card chip TPA1517NE to expand.

As the further embodiment of the utility model, the serial port circuit of ETX support plate further comprises RS232, RS485, RS422 and CAN.

As the further embodiment of the utility model, the peripheral interface circuit of ETX support plate further comprises programmable device, card reader, and CD-ROM drive, printer, USB flash disk, loudspeaker, mouse, keyboard, projector, interfaces such as LCD can drive the said equipment.

By using the described device of this kind embodiment, under the prerequisite of assurance function, reduced volume to greatest extent, alleviated weight, make the self defined interface main frame be convenient to install, safeguard and use, can be integrated at an easy rate in the desk-top testing apparatus, help the seriation of testing apparatus.

Description of drawings

Fig. 1 is that the system of a kind of embodiment of the utility model self defined interface main frame forms structured flowchart;

Fig. 2 is that the system of a kind of embodiment of the utility model self defined interface main frame forms structured flowchart 2;

Fig. 3 is that the ETX support plate system of a kind of embodiment of the utility model self defined interface main frame forms structured flowchart;

Fig. 4 is the ETX support plate USB expanded circuit partial circuit schematic diagram of a kind of embodiment of the utility model self defined interface main frame;

Fig. 5 is the ETX support plate sound card interface circuit part circuit theory diagrams of a kind of embodiment of the utility model self defined interface main frame;

Wherein: 1-ETX module, 2-ETX support plate, 3-peripheral interface circuit, 4-power interface circuit, 5-USB interface circuit, 6-serial port circuit, the 31-programmable device, 32-card reader, 33-CD-ROM drive, 34-printer, 35-U dish, the 36-loudspeaker, 37-mouse, 38-keyboard, 39-projector, 40-LCD.

Embodiment:

Accompanying drawing has provided specific embodiment of the utility model, below will the utility model will be further described by drawings and Examples.

As a kind of preferred implementation of the utility model, a kind of self defined interface computing machine that is applied in rail traffic vehicles supervisory systems such as railway locomotive as shown in Figure 1, comprise ETX module, ETX support plate, peripheral hardware and structural member, host machine part is ETX module, ETX support plate two parts.

Wherein ETX (Embedded technology extended) module is a kind of high compactness (95mm * 114mm that embedded-type control field occurs, 12mm is thick), the computer core unit module of high integration, the ETX module is a kind of computer standard structural member, similar with the definition of Intel CPU, international big producer mostly production the type module, all ETX modules are carried out same standard in size, connector and connector signal definition.The ETX module is connected with client's support plate (ETX support plate) by the high-density connector of 4 100pin.Parts such as general integrated CPU, coprocessor, storer in the ETX module, and various signal resources are drawn out on client's support plate by connector (4 * 100), the function that various clients need developed.On the ETX support plate, the PC interface circuit that can expand comprises video card (LVDS demonstration), parallel port, serial ports, USB mouth, key mouse mouth, port, sound card interface, bus interface etc.Because the ETX support plate can be by user oneself design, the user can design support plate according to actual physical size and required function.The user directly draws cpu bus (as ISA, PCI etc.) on the ETX module base in design ETX support plate, and uses cpu bus to expand various external interfaces, realizes user function.Itself does not provide independently application function the ETX module, and it comprises that with all resources bus, interruption etc. directly are external to user's ETX support plate by the high-density connector of 4 100pin, carry out secondary development for the user.

Based on the purpose of this utility model requirement, the ETX standard module ETX-PM14 that the ETX module in the embodiment adopts Kontron company (KONTRON) to release, the CPU of this module adopt Intel Pentium M 1.4G; Chipset is Intel 82855GME, 400MHz FSB, integrated graphics card; The 1G internal storage; The 2M high-speed memory; 2 of hard-disk interfaces; Sound card is the AC97 controller; A CRT display interface, one 36 is the LVDS display interface; The 10/100M network interface; 4 road integration USB interfaces; PS/2 keyboard and mouse interface.The peripheral hardware part then specifically comprises: programmable device 31, card reader 32, CD-ROM drive 33, printer 34, USB flash disk 35, loudspeaker 36, mouse 37, keyboard 38, projector 39, LCD 40.

System as shown in Figure 2 forms shown in the structured flowchart, and ETX support plate 2 mainly comprises power interface circuit 4, usb circuit 5, serial port circuit 6 and peripheral interface circuit 3.Wherein, the direct current 24V voltage transitions of 4 pairs of inputs of power interface circuit is required direct current 5V of ETX module 1 operate as normal and direct current 3.3V voltage; Usb circuit is because of 7 of system requirements, and ETX module 1 carries 4, therefore will expand other 3 usb circuits; ETX module 1 is not with serial ports, so all serial ports all need to expand, and comprises RS232, RS485, RS422 and CAN interface module; Because peripheral hardware comprises interface circuits such as PS/2, LAN, AC97, USB, therefore all need from ETX module 1 to be drawn out on the ETX support plate 2 external more various peripheral hardwares.

As shown in Figure 3, many application circuits are arranged on the ETX support plate, comprise the interface circuit that directly the ETX function is drawn outward, as sound card interface circuit that the sound card function is drawn outward with ETX ₃Carry the usb circuit that USB draws outward, and the functional circuit that expands, as various serial interface circuit by the pci bus expansion and encrypted circuit (U shield) etc.Wherein, the CRT display interface of computing machine provides the Projection Display function, can be widely used in the training place.Loudspeaker can provide abundant sound prompt function.U shield encryption function is duplicated file in the computing machine under can preventing from not have and authorizing.Whole ETX support plate adopts single supply DC24V/2A power supply by power-switching circuit, and general power is no more than 50W.

Shown in Fig. 4 ETX support plate USB expanded circuit partial circuit schematic diagram, special-purpose USB interface chip TPS2042 is adopted in the expansion of usb circuit, and addition portion divides interface unit spare to expand realization from the ETX bus interface.4 tunnel USB interface that ETX module 1 carries are then directly drawn direct use by interface circuit from the socket of ETX module 1.Therefore on ETX support plate 2, expand 3 TPS2042USB expanded circuits, and increase by 4 road usb circuits connection ETX module mouth circuit.

Shown in the sound card interface circuit part circuit theory diagrams of Fig. 5 ETX support plate, the sound card interface circuit uses special-purpose sound card chip TPA1517NE expansion, and this circuit can directly drive earphone, microphone and loudspeaker.The serial port circuit that need expand on the ETX support plate has multiple, comprises RS232, RS485, RS422 and CAN.This partial circuit adopts the classical circuit that in the past used to get final product.On support plate, also be integrated with the data encryption circuit in addition.

Whole computing machine has only two circuit boards, be ETX module and ETX support plate, whole main frame adopts incorporate structural member design, the ETX module belongs to exempts from fan design, do not need air blast cooling, cpu heat in the ETX module directly is crimped on shell, and all external interfaces are drawn from a side, is convenient to install.The utility model has only just been realized the function of system requirements compared to existing technology with ETX module and ETX support plate, accomplished farthest to simplify.

Though described embodiment of the present utility model in conjunction with the accompanying drawings, those of ordinary skill in the art can make various distortion or modification within the scope of the appended claims.Chip that technical solutions of the utility model adopted and components and parts include but not limited to the central cited concrete model of embodiment.

Claims

1. self defined interface main frame, it is characterized in that: this main frame only comprises ETX module (1) and ETX support plate (2), wherein, the ETX module comprises integrated CPU in (1), storer, ETX module (1) is connected with ETX support plate (2) by connector, and ETX support plate (2) comprises interface circuit and functional circuit.

2. a kind of self defined interface main frame according to claim 1, it is characterized in that: the interface circuit of described ETX support plate (2) comprises power interface circuit (4), usb circuit (5) and peripheral interface circuit (3), and power interface circuit is converted to the required DC voltage of ETX module operate as normal with input direct voltage.

3. according to claim 1 or the described a kind of self defined interface main frame of claim 2, it is characterized in that: the functional circuit of described ETX support plate (2) comprises serial port circuit (6).

4. a kind of self defined interface main frame according to claim 3 is characterized in that: the functional circuit of described ETX support plate (2) comprises encrypted circuit.

5. a kind of self defined interface main frame according to claim 4 is characterized in that: the serial port circuit (6) of described ETX support plate (2) further comprises RS232 interface circuit, RS485 interface circuit, RS422 interface circuit and CAN interface circuit.

6. a kind of self defined interface main frame according to claim 5 is characterized in that: the interface circuit of described ETX support plate (2) comprises the sound card interface circuit, drivable loudspeaker.

7. a kind of self defined interface main frame according to claim 6 is characterized in that: the peripheral interface circuit (3) of described ETX support plate (2) comprise can be external card reader interface.

8. a kind of self defined interface main frame according to claim 7 is characterized in that: the peripheral interface circuit (3) of described ETX support plate (2) comprise can be external the projector interface.