CN203178771U

CN203178771U - High performance vehicle virtual instrument

Info

Publication number: CN203178771U
Application number: CN 201320105338
Authority: CN
Inventors: 钟勇; 李光炀; 黄晓伟
Original assignee: Fujian University of Technology
Current assignee: Fujian University of Technology
Priority date: 2013-03-08
Filing date: 2013-03-08
Publication date: 2013-09-04
Anticipated expiration: 2023-03-08

Abstract

Provided is a high performance vehicle virtual instrument, comprising an ARMv7Cortex-A8 processor module, an LCD display module, a CAN bus collection module, an RS232 communication module, a video input module and a power supply module; the LCD display module, the CAN bus collection module, the RS232 communication module, the video input module and the power supply module are respectively in connection with the ARMv7Cortex-A8 processor module; the power supply module is respectively in connection with the LCD display module, the CAN bus collection module, the RS232 communication module, the video input module and the ARMv7Cortex-A8 processor module; an interface of the CAN bus collection module is in connection with a vehicle intelligent sensor. The high performance vehicle virtual instrument has good readability, integrates video collection function and develops vehicle intellectualization; the CAN bus meets data communication reliability and meanwhile simplifies wiring space.

Description

The vehicle-mounted virtual instrument of a kind of high-performance

[technical field]

The utility model belongs to the exploitation of Vehicular virtual instrument and application, relates to embedded system application technology and vehicle-mounted bus communication technology.

[background technology]

Instrument is one of importance that improves comprehensive vehicle performance as ten minutes part and parcel in the automobile total system.Fast development along with microelectric technique, computer technology, bussing technique etc., control system is too fat to move, the traditional electrical magnetic mechanical instrument big, wiring wiring complexity that takes up room is eliminated gradually, and virtual instrument is just with the incomparable advantage fast development of traditional machinery instrument.

At present, virtual instrument generally includes 2 kinds of pure digi-tal instrument and virtual meter panel instrument: pure digi-tal instrument cost is lower, controls comparatively simply, but function and interface are single, do not satisfy the growing demand of driver; Though existing virtual meter panel instrument function and interface are abundanter, but exist shortcomings such as cost of development height, portable poor, extensibility deficiency, be unfavorable for promoting on a large scale and application.

[summary of the invention]

Technical problem to be solved in the utility model is to provide a kind of high-performance vehicle-mounted virtual instrument, the electromagnetic and mechanical instrument that substitutes the traditional wired complexity, takes up room big by this virtual instrument, improve the man-machine interaction performance, conveniently make human pilot grasp the car body more information, readable good, in conjunction with four road video acquisition functions, expanded Vehicular intelligentization; The use of CAN bus is satisfied data communication reliability and has been simplified wiring space simultaneously.

The utility model is achieved in that

The vehicle-mounted virtual instrument of a kind of high-performance comprises ARMv7Cortex-A8 processor module, LCD display module, CAN bus acquisition module, RS232 communication module, video input module and power module;

Described LCD display module, CAN bus acquisition module, RS232 communication module, video input module and power module are connected respectively to described ARMv7Cortex-A8 processor module;

Described power module is connected respectively to described LCD display module, CAN bus acquisition module, RS232 communication module, video input module, described ARMv7Cortex-A8 processor module;

The interface of described CAN bus acquisition module is connected to the car body intelligence sensor, can be easily and each parts communication of vehicle, and versatility is good.

Described RS232 communication module is connected to PC, realizes the inquiry of system state and sensor states, expansion Vehicular system diagnostic function.

Described ARMv7Cortex-A8 processor module model is S5PV210, and the work dominant frequency is 1GHz, and the SDRAM of 512M and the NANDFLASH of 1G are worn in the periphery.

Described LCD display module is that resolution is 12.3 cun long high-resolution liquid crystal display modules of 1280*480, adopts the LVDS interface mode to carry out data and shows.

The maximum baud rate that described CAN bus is accepted and believed module is 1Mbits/s, has two channel C AN bus communication interface, supports CAN2.0B and CANOPEN agreement respectively.

Described video input module adopts the TW2865 video frequency processing chip, be connected with two utilizing camera interfaces of described ARMv7Cortex-A8 processor module with the binary channels way of output, carry out the transmission of 4 road video datas with ITU-R BT.656 form, the input video form is supported NTSC/PAL/SECAM.

Described power module is the power supply tree of one road 12V input, multichannel output, and output level comprises: 12V, 5V, 3.3V, 1.8V, 1.25V.

Advantage of the present utility model is: 1, adopt high-performance CPU, can the fast processing multitask, and can finish the High Resolution LCD data and handle; 2, adopt the 1280*480 high-resolution liquid crystal, can perfectly show most of car body information, the meter information amount is increased; 3, adopt the Two Channels CAN bus, can satisfy the CAN2.0B communication requirement, can satisfy the CANOPEN upper-layer protocol again, strengthened the system extension ability; Gather when 4, system can finish 4 road videos and demonstration, cooperate the operation of automobile, can realize that video automaticallyes switch, simple to operate, friendly interface is easy to safeguard.

[description of drawings]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model hardware composition frame chart.

Fig. 3 is that the liquid crystal Transistor-Transistor Logic level of LCD display module in the utility model changes the LVDS interface schema.

Fig. 4 is 4 tunnel video acquisition module wiring block diagrams in the utility model.

Fig. 5 is 2 road CAN bus module wiring block diagrams in the utility model.

[embodiment]

See also Fig. 1 and Fig. 2, the vehicle-mounted virtual instrument of a kind of high-performance comprises ARMv7Cortex-A8 processor module, High Resolution LCD display module, CAN bus acquisition module, video input module, RS232 communication module and power module.Described power module provides plurality of specifications voltage for system; Described ARMv7Cortex-A8 processor module is the core of system, links to each other with described video input module, CAN bus acquisition module, RS232 communication module and LCD display module.

Described ARMv7Cortex-A8 processor adopting S5PV210 model C PU, work dominant frequency 1GHz, the SDRAM of 512M and the NANDFLASH of 1G are worn in the periphery, guarantee the quick operation of system; Described LCD display module is connected with the Cortex-A8 module, and resolution is 12.3 cun long high-resolution liquid crystals of 1280*480, adopts the LVDS interface mode to carry out data and shows that model is the LQ123KILG03 of Sharp Corp; Described CAN bus module is connected by spi bus with the Cortex-A8 processor, the model of CAN bus controller is MCP2515, bus transceiver is MCP2551, CAN bus maximum baud rate is 1Mbits/s, the CAN bus interface is connected with the car body intelligence sensor, realizes collection and the monitoring of car body data; Described video input module adopts the TW2865 video frequency processing chip to be connected with the Cortex-A8 processor, carries out the collection of 4 road video datas with ITU-R BT.656 form, and the video input format is supported NTSC/PAL/SECAM; Described RS232 communication module and PC end is connected, and can realize that virtual instrument internal system information obtains and the reading of onboard sensor information, and realizes the off-line diagnosis of on-vehicle information; Described power module is one road 12V input, the power supply tree of multichannel output, and output level comprises: 12V, 5V, 3.3V, 1.8V, 1.25V.

As shown in Figure 3, described LCD display module interface is LVDS, and the lcd controller output level of S5PV210 is TTL, for realizing the conversion of these two level, adopt the level shifting circuit of Fig. 3, adopt the THC63LVDM83R chip, finish the demonstration data volume less than the level conversion of 298Mbits/s, the perfect high resolving power LVDS interface of realizing, interface type is 8 data bit of 20 pin single channels.

As shown in Figure 4, described video input module adopts the TW2865 video frequency processing chip to be connected with the Cortex-A8 processor, carries out the collection of 4 road video datas with ITU-R BT.656 form, and the video input format is supported NTSC/PAL/SECAM; S5PV210 has only 2 tunnel CAM interface, realizes obtaining of ITU-R BT.656 formatted data by the CAM interface of this two-way, and each road CAM interface is realized the collection of 2 road videos.

As shown in Figure 5, described CAN bus module adopts the binary channels interface, and the spi bus of S5PV210 is connected with 2 CAN bus controller MCP2515, control two-way CAN bus controller.

The embedded motion control platform of multiaxis of the present utility model is work like this: system obtains the vehicle-mounted intelligence sensor information that goes up, as the speed of a motor vehicle, engine speed, engine temperature, engage a gear position, oil mass, distance travelled etc. by the CAN bus.Show prompting driver vehicle condition information after the logical processing of these information at high-resolution LCD.The input of 4 road videos can connect camera, realizes reverse image, and when obtaining reversing information by the CAN bus, the automatic switchover reverse image is expanded vehicle intelligentization.

The utility model provides a kind of high performance Vehicular virtual instrument, deficiency at conventional instrument and the existence of existing instrument, to adopt ARMv7 processor S5PV210 be the hardware platform of core and be the software platform of core with the embedded Linux system, in conjunction with CAN bus communication technology, and adopt the graphical interfaces storehouse GTK2.0+ of open source code to develop the instrument end application on this basis.This virtual instrument readability is good, and the reading accuracy height all having obtained good improvement aspect portability, maintainability and the cost, has higher commercial use value.Electromagnetic and mechanical instrument by this virtual instrument substitutes the traditional wired complexity, takes up room big improves the man-machine interaction performance, conveniently makes human pilot grasp the car body more information, readable good, simple to operate, friendly interface, be easy to safeguard, expanded Vehicular intelligentization; The use of CAN bus is satisfied data communication reliability and has been simplified wiring space simultaneously.

Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.

Claims

1. vehicle-mounted virtual instrument of high-performance is characterized in that:

Comprise ARMv7Cortex-A8 processor module, LCD display module, CAN bus acquisition module, RS232 communication module, video input module and power module;

The interface of described CAN bus acquisition module is connected to the car body intelligence sensor.

2. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1, it is characterized in that: described RS232 communication module is connected to PC, realizes the inquiry of system state and sensor states.

3. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1, it is characterized in that: described ARMv7Cortex-A8 processor module model is S5PV210, and the work dominant frequency is 1GHz, and the SDRAM of 512M and the NANDFLASH of 1G are worn in the periphery.

4. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1, it is characterized in that: described LCD display module is that resolution is 12.3 cun long high-resolution liquid crystal display modules of 1280*480, adopts the LVDS interface mode to carry out data and shows.

5. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1, it is characterized in that: the maximum baud rate that described CAN bus is accepted and believed module is 1Mbits/s, has two channel C AN bus communication interface, supports CAN2.0B and CANOPEN agreement respectively.

6. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1, it is characterized in that: described video input module adopts the TW2865 video frequency processing chip, be connected with two utilizing camera interfaces of described ARMv7Cortex-A8 processor module with the binary channels way of output, carry out the transmission of 4 road video datas with ITU-R BT.656 form, the input video form is supported NTSC/PAL/SECAM.

7. the vehicle-mounted virtual instrument of a kind of high-performance as claimed in claim 1 is characterized in that: described power module is the power supply tree of one road 12V input, multichannel output, and output level comprises: 12V, 5V, 3.3V, 1.8V, 1.25V.