CN102259594A - Advanced reduced instruction-set computer (RISC) machine (ARM)-based integrated information display system for automobile - Google Patents

Advanced reduced instruction-set computer (RISC) machine (ARM)-based integrated information display system for automobile Download PDF

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Publication number
CN102259594A
CN102259594A CN2011101288169A CN201110128816A CN102259594A CN 102259594 A CN102259594 A CN 102259594A CN 2011101288169 A CN2011101288169 A CN 2011101288169A CN 201110128816 A CN201110128816 A CN 201110128816A CN 102259594 A CN102259594 A CN 102259594A
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CN
China
Prior art keywords
arm
transceiver
information display
integrated information
automobile
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CN2011101288169A
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Chinese (zh)
Inventor
顾燕
马亮
侯勇
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河海大学
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Priority to CN2011101288169A priority Critical patent/CN102259594A/en
Publication of CN102259594A publication Critical patent/CN102259594A/en

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Abstract

The invention discloses an advanced reduced instruction-set computer (RISC) machine (ARM)-based integrated information display system for an automobile, which relates to the integrated information display system for the automobile and belongs to the technical field of application of embedded systems in the technical field of automotive electronics. In the system, an ARM processor is connected with a man-computer interaction interface, a buzzer, a global positioning system (GPS) module, a general packet radio service (GPRS) module, an audio module, a memory, a clock circuit, a controller area network (CAN) controller and a reset circuit respectively; the CAN controller is connected with a first CAN transceiver; the first CAN transceiver is connected with a CAN bus; and a second group of CAN transceivers and a third group of CAN transceivers are connected with the first CAN transceiver through the CAN bus respectively. In the system, the aims of high accuracy, high integration level, high performance, high quality and economic applicability are fulfilled.

Description

Automobile Integrated Information Display System based on ARM

Technical field

The present invention relates to the display system of automobile integrated information, belong to the technical field that embedded system is used in technical field of automotive electronics.

Background technology

Instrument is the important component part of automobile, is used for the various information of real-time display automobile, as the speed of a motor vehicle, and oil mass, engine speed etc.Present instrument has developed into full electronic movement instrument, and its signal processing mode becomes digital signal from analog signal.Full electronic movement instrument has multiple structure and manifestation, and wherein mainly containing a kind of is the full digital liquid crystal display auto meter that integrates sensor, network service, control unit, terminal demonstration, memory capacity.That is: the various semaphores of the chaufeur demand that sensor is collected all change into digital signal, after handling by central process unit (CPU), again semaphore is shielded with the digital lcd that various mode is presented at a kind of structure, thereby show various vehicle condition information, make accurate, sensitive, steady, the effectively indication of instrument.This instrument has the integrated level height, function is strong, low in energy consumption, speed is fast, storage content is big, graphic designs is flexible, can many interface operations, good, the reliable operation of good, the strong interference immunity of visual performance, commonality, indication accurately, a series of advantages and characteristics such as long service life, normalisation coefft height, but that product development cost and producing drops into is bigger.At present, the production technology level of domestic automobile instrument manufacturing enterprise is uneven, though they have the distribution channel of home market and the low value-added product that suitable domestic automobile uses, but in output with only can satisfy the supporting demand of existing domestic vehicle qualitatively, compare with international most advanced level with the product engineering level at production tooling, also have no small gap.

Summary of the invention

The object of the invention provides a kind of high precision that has, high integration, High Performance, high quality, the economic and practical automobile Integrated Information Display System based on ARM.

The present invention adopts following technical scheme for achieving the above object:

A kind of automobile integrated information display device based on ARM, comprise arm processor, described arm processor interconnects with human-computer interaction interface, buzzer phone, GPS module, GPRS module, audio-frequency module, memory device, clock circuit, CAN controller, reset circuit respectively, the CAN controller is connected with a CAN transceiver, and a CAN transceiver connects and the total wire joint of CAN; Second group of CAN transceiver, the 3rd group of CAN transceiver link to each other with a CAN transceiver by the CAN bus respectively, the signal input part of second group of CAN transceiver is connected with the signal output part of second group of MCU, and the signal input part of second group of MCU is connected with the signal output part of switching value; The signal input part of the 3rd group of CAN transceiver is connected with the signal output part of the 3rd group of MCU, the signal input part of the 3rd group of MCU and A the signal output part of D conv be connected, A the signal input part of D conv be connected with the signal output part of analog quantity frequency quantity sensor.

GPS module of the present invention, GPRS module are connected with arm processor by serial communication interface respectively, and described serial communication interface is a kind of among RS232, RS485, RS422, the RS423.

Memory device of the present invention is SDRAM, NOR FLASH and NAND FLASH.

Audio-frequency module of the present invention is connected with arm processor by IIS.

Arm processor of the present invention is connected with a CAN controller by SPI, finishes to receive message and send message.

Human-computer interaction interface of the present invention is the LCD of band touch screen interface.

In the technical solution used in the present invention: the CAN bussing technique is as the technology of distributed control of a kind of effective support and real-time control, and other device must be linked on the network-bus of automobile on auto meter and the automobile, and can intercom mutually, therefore, be introduced in the present invention, the node of auto meter as car load CAN network, can respond other node signal fast, the display precision height, speed of response is fast, good reliability, and directly can with other node " dialogue ", control external node state.The design at first by sensor to engine speed, the speed of a motor vehicle, amount of fuel, cooling water temperature, various digital quantities such as other vehicle condition information and analog quantity are gathered, in order to realize information sharing with other node, adopt the CAN bus to carry out data transmission, receive from driving engine by the CAN bus interface then, automatic transmission with hydraulic torque converter, oil mass, the water yield, the information of nodes such as navigationsystem, with ARM S3C2440 treater is the control main body, under the management of (SuSE) Linux OS, data are carried out after real-time analysis handles, utilize the demonstration of Qt/Embedded realization to on-vehicle information, realize a close friend's human-computer interaction interface, provide strong assurance for the convenient driving of chaufeur simultaneously, in addition, carry out interaction response by touch-screen, both looked after the personnel's that drive custom, and utilized the advantage of modern electronic technology again, it is multi-functional that instrument is had, intelligent and high-precision characteristics, the more important thing is that embedded platform makes this system have favorable expansibility.The present invention compared with prior art has following advantage:

1, the present invention utilizes automobile CAN network communications technology transmission instrumented data, has not only improved the speed of data transmission, has guaranteed the real-time of system; And increased the antijamming capability of data communication, guaranteed the reliability and stability of system; Save greatly again simultaneously and simplified the numerous and diverse wiring system of automobile tradition wire harness.

2, the present invention adopts Embedded (SuSE) Linux OS, and the software resource on it is very abundant, and multitask kernel is highly stable, has efficient powerful network function, support multiple file and graphics system, the function expansion has powerful self-upgrading ability easily.

3, the present invention adopts touch screen technology, realizes that really man machine interface is simply mutual.

4, the present invention combines in various information on the instrument and shows, and is easy to operate simple, multiple functional complete, and work amusement easy switching makes instrument have multi-functional, intelligent and high-precision characteristics.

Description of drawings

Fig. 1 is a system principle constructional drawing of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:

A kind of automobile integrated information display device based on ARM, comprise arm processor, described arm processor interconnects with human-computer interaction interface, buzzer phone, GPS module, GPRS module, audio-frequency module, memory device, clock circuit, CAN controller, reset circuit respectively, the CAN controller is connected with a CAN transceiver, and a CAN transceiver connects and the total wire joint of CAN; Second group of CAN transceiver, the 3rd group of CAN transceiver link to each other with a CAN transceiver by the CAN bus respectively, the signal input part of second group of CAN transceiver is connected with the signal output part of second group of MCU, and the signal input part of second group of MCU is connected with the signal output part of switching value; The signal input part of the 3rd group of CAN transceiver is connected with the signal output part of the 3rd group of MCU, the signal input part of the 3rd group of MCU and A the signal output part of D conv be connected, A the signal input part of D conv be connected with the signal output part of analog quantity frequency quantity sensor.

As shown in Figure 1, GPS module of the present invention, GPRS module are connected with arm processor by serial communication interface respectively, and described serial communication interface is a kind of among RS232, RS485, RS422, the RS423.

As shown in Figure 1, memory device of the present invention is SDRAM, NOR FLASH and NAND FLASH.

As shown in Figure 1, audio-frequency module of the present invention is connected with arm processor by IIS.

As shown in Figure 1, arm processor of the present invention is connected with a CAN controller by SPI, finishes to receive message and send message.

As shown in Figure 1, human-computer interaction interface of the present invention is the LCD of band touch screen interface.

Fig. 1 is a system principle constructional drawing of the present invention, and our the vehicle condition information that collects has analog quantity, frequency quantity and switching value usually, these information be delivered to arm processor, also needs certain processing.S3C2440A type arm processor is controlled a CAN transceiver by SPI interface and CAN controller, and transmitting-receiving is by the information of CAN bus transfer.The S3C2440A chip has lcd controller and touch screen controller, and therefore, an external liquid crystal display that has a touch screen interface can be realized the real-time demonstration with touch operation, realizes man-machine interaction.GPS module among Fig. 1 is used for bus location and navigation, and it and arm processor are undertaken by serial ports alternately.The GPRS module be used for the Internet webserver on swap data.Under entertainment mode, can insert Internet by GPRS and surf the Net especially, it and arm processor also are to communicate by serial communication interface.Audio-frequency module then is that arm processor advances control by IIS to it, and audio-frequency module can be used for audio alert on the one hand, Voice Navigation, and speech recognition can realize music on the other hand under entertainment mode.Memory device of the present invention is SDRAM, NOR FALSH, NANDFLASH, and wherein SDRAM is the memory headroom that the present invention moves, and NOR FLASH, NAND FLASH are data spaces of the present invention.This entire system is under the management of linux system, and the application program of the Qt/Embedded by writing each modules driver and upper strata is respectively made file system, and bootloader, kernel, file system are downloaded among the nand.

The present invention is under normal mode of operation, and the various vehicle condition information that show on the liquid crystal display such as the situation of engine speed, the speed of a motor vehicle, amount of fuel, total kilometrage, cooling water temperature, each indicator lamp etc., also show current date and time simultaneously in real time.On instrument, open up a zone specially and be used for the GPS navigation demonstration for the GPS location.Sensor is delivered to the arm processor analyzing and processing by the CAN bus after the analog quantity, frequency quantity or the switching value that collect are handled, and shows on LCD then.The different information processing manners that sensor acquisition arrives are as follows respectively:

For analog quantity, as the engine coolant temperature in the vehicle behavior information, oil tank fuel amount etc., convert analog voltage amount to through separately sensor, after processing and amplifying, convert the binary digit/bit amount that microprocessor can be handled to by A/D converter again, handle by CAN bus input microprocessor.

For frequency quantity, as engine speed in the vehicle behavior information and car speed etc., convert impulse singla to through separately sensor, by the CAN bus again input microprocessor handle.

For switching value, the automobile left-hand rotation by switch control in the vehicle behavior information, right-hand rotation, braking, reversing, various light controls etc. after level conversion and anti-interference process, are handled by CAN bus input arm processor.

On screen with a button opening/closing GPS navigation function.With a button opening/closing Voice Navigation function, come the On/Off music playback function with a quick botton, preferential GPS navigation function when navigation and music function are opened simultaneously.In addition, also need set up a button and come switching working mode and entertainment mode.Because automobile can not carry out entertainment mode under mode of operation, therefore, car is prohibited from entering entertainment mode in the process of moving, and this moment, this button lost efficacy.

Under entertainment mode, in linux, add some simple trivial games and carried out amusement, can also listen to the music, see a film.In addition, but by GPRS access network also browsing page etc.

Claims (6)

1. automobile integrated information display device based on ARM, it is characterized in that comprising arm processor, described arm processor interconnects with human-computer interaction interface, buzzer phone, GPS module, GPRS module, audio-frequency module, memory device, clock circuit, CAN controller, reset circuit respectively, the CAN controller is connected with a CAN transceiver, and a CAN transceiver connects and the total wire joint of CAN; Second group of CAN transceiver, the 3rd group of CAN transceiver link to each other with a CAN transceiver by the CAN bus respectively, the signal input part of second group of CAN transceiver is connected with the signal output part of second group of MCU, and the signal input part of second group of MCU is connected with the signal output part of switching value; The signal input part of the 3rd group of CAN transceiver is connected with the signal output part of the 3rd group of MCU, the signal input part of the 3rd group of MCU and A the signal output part of D conv be connected, A the signal input part of D conv be connected with the signal output part of analog quantity frequency quantity sensor.
2. the automobile integrated information display device based on ARM according to claim 1, it is characterized in that above-mentioned GPS module, GPRS module are connected with arm processor by serial communication interface respectively, described serial communication interface is a kind of among RS232, RS485, RS422, the RS423.
3. the automobile integrated information display device based on ARM according to claim 1 is characterized in that above-mentioned memory device is SDRAM, NOR FLASH and NAND FLASH.
4. the automobile integrated information display device based on ARM according to claim 1 is characterized in that above-mentioned audio-frequency module is connected with arm processor by IIS.
5. the automobile integrated information display device based on ARM according to claim 1 is characterized in that above-mentioned arm processor is connected with a CAN controller by SPI, finishes to receive message and send message.
6. the automobile integrated information display device based on ARM according to claim 1 is characterized in that the LCD of above-mentioned human-computer interaction interface for the band touch screen interface.
CN2011101288169A 2011-05-18 2011-05-18 Advanced reduced instruction-set computer (RISC) machine (ARM)-based integrated information display system for automobile CN102259594A (en)

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Publication number Priority date Publication date Assignee Title
CN103204116A (en) * 2013-03-25 2013-07-17 重庆长安汽车股份有限公司 Vehicular information service system
CN103546349A (en) * 2013-11-04 2014-01-29 南京交通职业技术学院 Design method of embedded vehicle-mounted CAN bus detector
CN108418738A (en) * 2018-03-01 2018-08-17 吉旗物联科技(上海)有限公司 A kind of CAN data reporting methods for saving flow and memory space
CN109272696A (en) * 2018-08-27 2019-01-25 出门问问信息科技有限公司 Electronic equipment

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CN102054330A (en) * 2010-12-02 2011-05-11 北京交通大学 Embedded disaster monitoring device

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CN1920704A (en) * 2005-08-25 2007-02-28 比亚迪股份有限公司 Four-wheel drive control system for pure electric automobile
JP2009020970A (en) * 2007-07-12 2009-01-29 Alpine Electronics Inc Data processing device, control program, and computer-readable recording medium
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204116A (en) * 2013-03-25 2013-07-17 重庆长安汽车股份有限公司 Vehicular information service system
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CN109272696A (en) * 2018-08-27 2019-01-25 出门问问信息科技有限公司 Electronic equipment

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Application publication date: 20111130