1, car computers overview
Automotive Electronics computer integrated (pc-based) represents the future of automotive technology and product development direction. In short, the car after loading market car PC installation service that is in the cars and vehicles share the computer. Based on the car PC platforms, each car can build into a perfect mobile information and entertainment system Terminal, fully integrated Telematics (in-car communication system), Navigation System (navigation and monitoring system) and Digital Entertainment System (digital entertainment system), Driver Assist System (auxiliary steering system), the Driver State Analysis System (driver status analysis system), Surround Vehicle Detection (vehicle driving environment detection system), and other in-vehicle system, vehicle occupants may ease file processing, wireless Internet, GPS navigation, audio playback, digital mobile TV receiver, travelling information browsing, remote monitoring, backing imaging, driver status monitoring, driving environment monitoring, and other functions.
Automotive needs in different road and climate conditions. Car PC work environment is poor, you need to take regular vibration and temperature and humidity of the dramatic changes, but also withstand voltage large amplitude and car and outside electromagnetic interference, so car PC requires a high level of reliability and durability of the environment. Plus car PC needs and original car systems integration, so the car PC requires sophisticated technology is very complex. In addition to technical factors, car PC related aspects of intellectual property rights and Community law are more complex.
Car PC in the people's livelihood and industrial users have broad prospects, but before the implementation of this vision is a lengthy process.
From international major car brand concept car design, car computers will become one of the standard configuration of the car. From our country, with the release of the 3 g Standard, as well as the development of automotive electronics, car computers will be widely applied. And with the level of industrialization, car PC will be more practical, attractive and safe. Car PC especially in strengthening the active security has great potential. With the 3 g standard publishing and popularization of car PC to car PC to the Terminal Internet value-added services will appear, this will surely bring relevant software industry, advertising, content industry development.
From the development of on-board computer product shape, double set (2din) specification is the ultimate car PC development, to be able to fit the shape of the vast majority of mainstream models. The world and China Taiwan region some technology companies are actively developing dual (2din) car PC.
2, car computers function:
2.1 smart GPS navigation, positioning and capabilities;
2.2 multimedia video entertainment, games, digital mobile TV receiver, etc.;
2.3 PC mobile and wireless communication capabilities;
2.4 assisted driving functions (can be equipped with reverse rear-view, auto night vision, and other functions);
2.5 lane information browsing, logging and locking query function;
2.6 security anti-theft function;
2.7 driver status monitoring function (available with driver fatigue, drink driving, monitoring and warning sensor and processor).
3, car computers feature:
Comprehensive and ductility.
4, car computers composition and quality standards:
Car PC is generally divided into split and integrated two form. But no matter what shape, car PC hardware and software in General consists of two parts. Hardware section includes PC motherboard, monitor, power control, and other parts.
4.1 hardware parts
4.1.1 hard disk:
Use ATA100 transmission interface, read-write noise less than 2.4 DB, wait state less than 2.2 DB. Seismic capacity of work 250g/2ms, static seismic capacity up to 900G/ms, average non-fault time 330000; adopts wireless suspension design GMR head technology, liquid bearing motor, head load/unload technology. Power consumption when 2.4W, seek to read and write data at 2.3W, standby mode, Hibernate When 0.1W 0.25W. With ATA automatic noise management capabilities, ATA48 bit address feature set, Multi-Burst On-the-Fly error correction.
4.1.2 memory segment: standard computer memory or laptop memory.
4.1.3 chassis: small size, the front of the chassis air enters the mouth, set aside the back panel installed a 30MM cooling fans, chassis side panel is installed on the CPU has a set of air boot device, the chassis side panel on a rectangular air vents, and covered with metal mesh shielding radiation the vents are PCI cards provide thermal expansion devices such as the cold air, meet EMI (electromagnetic compatibility) standards.
4.1.4 motherboard: has excellent shock-thermal features, to-10 ° c-+ 65 ° c wide temperatures; low power consumption; the structure complies with the ATX, X86; small volume.
4.1.5 monitor: single, double-up as well as desktop, telescopic, roof, and so on each kind of specification screen. Show ping request has excellent shock-thermal features, to-10 ° c-+ 65 ° c wide temperatures; TFT digital display; high resolution (with 800 * 480/800 * 600/1024 * 768); brightness not less than 400cd/m contrast less 300cd/m; low power consumption. 12V DC input, the filter canForce. A display with power amplifier, radio or DVD functions.
4.1.6 power supply: DC input voltage range: 7-18V (12V); low power consumption, high efficiency; the advanced automobile ignition control function ITPS; input undervoltage, overvoltage and reverse protection features; output under-voltage, over-voltage, overload protection capabilities; support PS_OK and PS_ON signal.
4.2 Software section
4.2.1 operational program O/S: meet X86 structure of the operating system. Genuine software.
4.2.1.1 open: on the operating system have full control permissions, the system is completely open.
4.2.1.2 embedded: read permission for the operating system only, you cannot change the operating system.
4.2.2 navigation map
4.2.3 HMI
4.3 car PC voice part
4.3.1 borrowing to host AUX CD sound input.
Car PC audio signal output directly connected to the AUX input CD host.
4.3.2 through power amplifier for voice input.
Car PC audio signal output connected to a power amplifier with power amplification, Midway requires connection filtering BA3121.
4.3.3 FM signal transmission
Select a fixed frequency, in-vehicle computer signal is connected to the signal transmitter.
5, car computers installation requirements:
5.1 install basic principles: security, stability, and hidden.
5.2 hardware components:
5.2.1 preparations
Due to the particularities of the on-board computer, in the car PC before construction, car PC full desktop link debug, identify the connector and all features are available after loading. When you debug in the desktop environment, car PC data cable length according to the actual construction of the required length.
Determine the required installation location, continued on vehicle original electronic equipment, the installer should know whether installed other automotive electronics products, because of different electronic products between non-adjusted interference. Check whether the normal car battery voltage. Check vehicle whether foil, to avoid auto film on the GPS receiver of the shield, as necessary, be placed outside the car.
USB-HUB and USB devices shall be in accordance with the safe, easy-to-use principle is installed in the appropriate location inside the car. Specific location because of the different models and actors need to be specified.
5.2.2 installation requirements
5.2.2.1 wiring
Cable, power cable wiring separation, no two line class with strapping (Note: the data cable and power cord in the table below)
5.2.2.2 wire protection
Effective use of PVC double wall corrugated pipes, heat-shrinkable tubes, insulating blanket protection for wire rod.
5.2.2.3 checking and debugging
Vehicle after the installation is complete, the entire car check, determine all parts have been recovered, fixed, check tool.
5.2.3 wire standard selection and installation
5.2.3.1 power cable standard
5.2.3.2 wire installation
Car PC power cord to a properly protected from and produces high temperature or destructive components such as: automotive, internal wiring, electric motor, travel computer, exhaust pipes or fan, etc. Power cable should be fixed for each interval 30cm-40cm strapping, and neat routing environment into account.
From battery cathode extend to car PC power supply with power cord, shall, through the engine room of the firewall before retrofitting a 40cm within the fuse. Fuse of the installation location you want to clear, and in the installation, the installation location for the fuse. Guarantee in the event of a problem in 5 minutes to change jobs.
Adding fuse's main role is to prevent short-circuit protection of power in a timely manner. If not installed fuse or fuse amp value too large can cause spontaneous combustion power cord, and possible serious fire.
5.2.3.3 power cord from power
When installed, shall be repeated using electricity meters to confirm the polarity is correct. Avoid using a cigarette lighter as the source of the electro-Hsi ядн often can the Hsi cigarette lighter is not delivered enough current to the on-board computer.
Power of positive and negative level should be taken directly from the battery. Due to the particularities of the on-board computer, separate from strictly prohibited during construction, and positive-negative ground.
Positive and negative-level wholly removed electricity main role is to prevent a total disruption, as well as audio in some bad phenomenon.
5.2.3.4 the proper protection of wire connector and take the right measures of protection
All wires are to pay attention to the connector. Wire step line path if you must go through the humid environment, the joints must be done well and moisture-resistant treatment to avoid suffering from corrosion.
In addition, all + 12V conductor surface, do not conductive. All through the metal plate and wire, online hole you want to use the Eraser button eyes or sheathed protection.
5.2.3.5 car PC interface cable connection
5.2.3.5.1 VGA interface
VGA (Video Graphics Array a video graphics array) interface, that is, the effect is D-Sub15 interface will convert better analog signal output to CRT or LCD monitor. This interface can be implemented by the converter, and multiple screen displays can implement AV, S-VADIO output.
VGA connector sides there are two screw holes in theConstruction please use VGA interface comes with screws, determine the softness, guaranteed fixed, please do not use this interface to excessive docking, the installation is secure and excessive docking will damage caused to the VGA connector.
VGA cable during the installation, you should absolutely avoid and power cables tying together, while routing for prohibiting the VGA cord 90 ° bend. As far as possible ensure that VGA cable connection in parallel to the vehicle mounted computer host.
In case of insufficient VGA signal cable length, cannot connect to the car PC, please use the car PC VGA cable specifications are the same, with shielding function in VGA cable for the extension. Extension of joints need to be protected and secure. VGA cable to reach the host location, please reserve 20cm long distance for future repairs.
5.2.3.5.2 USB interface
USB or universal serial bus. Car PC equipped with two USB2.0 interface (480Mbps).
Installation USB cable and power cord should be avoided, wiring bundles the is prohibited from using USB cable for 90 ° bend, to ensure that the USB cable is connected to the vehicle parallel to the host computer.
In the construction of the first Visual need USB cable length, use one-time connection to avoid multiple USB extension cord is used, or the use of a power to extend the USBHUB signal attenuation reducing to a minimum. Unavoidable circumstances, be used with signal amplification functions of a separate USB cable normally cord length should not exceed 5 metres.
USB interface itself with a fixed capacity. In the connect to the car PC after seated you can reach the host, USB cable, please reserve 20cm long distance. Ease of future repairs.
5.2.3.5.3 RS232/serial port
Car PC with a serial port for touch-screen used. In the construction of wiring, prohibit the serial line for 90 ° bend. Try to ensure that the serial line parallel to connect to a host of on-board computer.
If a serial line length is insufficient, you can use the car PC specifications same serial extension cord.
5.2.3.5.4 PS2 interface
Mouse/keyboard interface, and purple for keyboard interface, green for the mouse connector.
Under normal circumstances this device do not need to install. If you need to install wireless mouse and keyboard, use original equipment comes with cable access.
5.2.3.5.5 parallel interface
Under normal circumstances this device do not need to install, such as the need to install the parallel interface device, using the original equipment comes with cable access.
5.2.3.5.6 audio interface
Standard 3.5mm audio interface.
In the construction of the first Visual need audio cable length, audio cable, with shielding required
Wiring, care should be taken to protect the audio cable, each connection joints should be well insulated protection.
5.2.3.5.6 LCD installation
Retractable LCD Panel boxes have to be very close to the LCD screen. Retractable LCD Panel of the box to the edge of the location to install and maintain the formation and the smallest gap.
LCD installation location must not influence the safety while driving. After opening the LCD Panel shall not affect the driver's line of sight.
5.2.3.5.7 car PC host installation
In that car PC cooling patency, for concealed installation. Car PC host need to be fixed directly to the body, the host placement, is strictly prohibited in squeeze
Floating null placement.
6, car computers test standards:
6.1 installation location check
Comply with the above installation location, check the host fixed location, determine its not loose, shedding.
6.2 wire inspection
Comply with the above installation standards, once again confirmed the data cable, power cable, all strapping solid, tight.
Check all connectors 6.3
Meet the above criteria, the Terminal is installed securely attached.
6.4 check voltage
Check voltage to determine the battery status is not lack of electricity.
7. FAQ diagnosis
7.1 car PC no, start, follow these steps:
Check car PC connectors and wiring of all plugs are firmly, and plugged into their interfaces.
Check car PC insurance, check auto convenience interface for dirt, check the power cord plug for dirt.
The car's battery respectively and the external power supply cable for power supply. Power on, verify the power led is lit, determine whether the lack of electricity for the car battery.
As the car battery chemistry and after repeated charging, the battery life may be shortened, this is normal. If the car battery has a lack of electricity, car computers will not be started.
7.2 car PC can post, but fails to start
If the car PC issued a series of "di" sound, that means that the car PC hardware errors.
If the car PC can display a screen of the "F1", but you cannot enter the system or in the operating system report errors during the boot process. Please check whether you have placed the floppy disk in the floppy disk.
If the car PC can display "CONFIG file corrupt" screen, but you cannot enter the system or in the operating system report errors during the boot process. Please restore the operating system. Enter the BIOS program, call the BIOS default settings, save and reboot.
7.3 from a CD or other storage device to install software or applications suddenly panic, it gives me errors
CheckCheck the disc surface or storage media is normal, other car PC can be read properly.
Read the software to install, confirm that the software and this car PC operating system compatibility.
Confirm that the hardware configuration of the on-board computer meets the software requirements for on-board computer hardware.
Confirm the closes when installing the software to other running programs, such as: certain resident memory real-time anti-virus software, network monitor program.
Confirm that the car PC is not connected to Internet network.
Confirm that you want to install software as legitimate software.
7.4 car PC connect certain computer peripherals and can be connected to the on-board computer and electronic equipment that does not use
Check the device and the car PC room wiring for a fully connected.
Check the device's power supply is already normal open, and in a normal working condition.
Read the instruction manual of the device, according to the specification of requirements set for electronic devices and on-board computers.
Check car PC and the electronic device connection port, whether in the car PC system is turned off.
Check car PC port configuration and port of electrical standards and the requirements of electronic equipment, or be compatible.
Confirmation of the electronic device and other in-vehicle computer normal connection and use.
7.5 confirmation car PC can and other types of electronic equipment normal connection and use. If you still cannot dial-up car PC
Check car PC and wireless network devices are connected correctly.
Check wireless Internet device is working properly, make sure that no State is in arrear.
Determine the wireless Internet device for that device (GPRS\CDMA) determine local have network coverage.
Determine the wireless Internet device drivers properly installed.
7.6 car PC running some programs process errors, panic
Verify that the procedures have been properly installed, do not miss the action to remove the program, some of the files.
Make sure the car PC hardware configuration meets the program's in-vehicle computer hardware configuration requirements.
Please read the instructions on using the software, and confirm the program running software environment.
Please read the instructions for use of the software to confirm that the program is running in the call of other car PC peripherals can be used normally.
Close a running other software to eliminate software conflicts.
If you still cannot run the software, it is recommended that you uninstall the software. Restart the car PC and then install it again normally.
7.7 car PC TFT-LCD black screen
Please confirm whether on-board computer is in hibernation.
Please confirm that the operating system on the power management settings for a certain period of time after closing the LCD screen.
Please confirm whether the external car PC the other display devices, and switch to display on the device.
7.8 car keys go to ACC retaining, car PC does not have no action
Make sure the car battery is in a State of overvoltage or undervoltage.
Please confirm whether automotive other electronic equipment can be used normally.
Please make sure that all cables are connected properly, and attach it still is not valid.
Verify that the connection to the car battery power cord for normal power supply.
7.9 car PC in the first time, the touch screen is not available
Please check the touch screen connector is properly connected.
Please check the touchscreen wiring for broken, head and exposure.
Please connect the mouse or keyboard, enter the Device Manager to view the device is installed.
Usually the touch screen will not be able to use the majority of drivers.
7.10 car PC mounted large screen appears after water ripple
Make sure the data cable to the power cord is separate wiring.
Please make sure that all cables are connected properly, and attach it still is not valid.
As still void please install car PC display filter.
7.11 car PC sound interference after installation.
Make sure the data cable to the power cord is separate wiring.
Please make sure that all cables are connected properly, and attach it still is not valid.
Verify that the audio signal cable is not damaged, you can normally use.
As still void please install car PC audio filter.
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