Car PC basic knowledge

The development of the times makes people more and more dependent on cars, more and more inseparable from computers. When your car is only equipped with ordinary car audio, it can be owned by any car owner. But when your car is equipped with CARPC, you have a computer with the car, which can turn your car into a smart vehicle, and turn your car into a sound bar, a theater, an office, a you Internet and games are available anytime, anywhere. Whether you are a carmaker or a motorist, when you own an Auto PC, it can bring you a value-for-money price-performance ratio that makes you and your car unique.

The real on-board computer CARPC is a high-tech computer multimedia technology, mobile communication technology, GPS technology and network technology. It is a mobile computer system with strong functions, small size and high reliability for the automotive industry. High integration, strong compatibility, flexible structure, easy to cut and upgrade are necessary; complete performance, compact structure, excellent cost performance, reliable work, stable operation, safe use, easy operation are its characteristics.

Let's take a look at the production and development of car PC CARPC first:

In the early 1990s, the concept of intelligent transportation system (ie ITS) was proposed abroad. Intelligent vehicle (IV) is an important part of intelligent transportation system. The IV technology includes many technologies such as computers, mobile communications, and automatic control to make the vehicle more comfortable, entertaining, safe, and convenient. The PC informatization of automobiles is the basis and necessary conditions for achieving the IV technology.

In 1998, the world's software giant Microsfot proposed the concept of AutoPC, and was devoted to the development and construction of the AutoPC software platform. Its purpose is to recreate a PC market, so that people can also use WEB services that are usually used at home and company in cars Realize the concept of "Connected Car" to establish automobile information network.

In 1999, General Motors of the United States proposed the concept of "network car", and then the concepts of "intelligent car" and "IT car" also came into being.

In 2000, about 1.6 million vehicles were equipped with GPS navigation systems.

In 2001, about 40% of Japanese cars were equipped with DVD systems.

In 2002, Toyota and Microsoft signed an agreement to install on-board computers with "Windows CE" operating system on Toyota.

In 2003, more than 40% of cars will have Internet equipment installed.

Toyota estimates that by 2006, more than 33% of Toyotas will be equipped with on-board computers.

Authoritative institutions predict that network communication and electronic information processing will become the basic configuration of the 21st century automobile.

Automotive E-ization is composed of safety, convenience, information, entertainment and high-speed wireless communication. Therefore, the requirements for vehicle multimedia are: integrating multiple functions into one and creating maximum value for users in a limited space. E-style makes the car integrate driving, work, life, games and other fun in one.

The fierce competition in the automotive industry has enabled many manufacturers to enhance their competitiveness by introducing new models, improving configuration, service quality, and the cost-effectiveness of the entire vehicle. E-Chem brings new ideas and theoretical innovations to many automobile manufacturers in building brand image and enhancing their core competitiveness.

1. What is CARPC

The on-board computer is a highly integrated vehicle multimedia entertainment information center. At present, only the top models of BMW, Audi and other foreign countries are equipped with similar intelligent on-board systems. The main δ Xin? Ǔ 翟 厝? 芏 嗝 教 逵 槔Zheng? Polo ?? PS satellite navigation, professional diagnosis of car information and faults, mobile office and industry applications.

2. Functions of on-board computer:

The in-vehicle PC combines various requirements such as navigation, entertainment, and daily transaction processing, with a compact appearance and high integration. As a new product used by high-end vehicles, in-vehicle PCs implement five major functions and have strong scalability: navigation and positioning, network functions, information indication, entertainment functions, and security functions.

3. The extensibility of the on-board computer

A real in-vehicle computer requires relatively unlimited expandability. For example, it can be connected to digital devices such as digital cameras, mobile phones, gamepads, USB drives, mobile hard drives, cameras, PDAs, and NetMD, and connected to the Internet through GPRS / CDMA 1X and Wifi. The development of USB gives us unlimited imagination space

4. The main points of hardware purchase of car PC CARPC

A. Hard disk purchase: At present, it is generally recommended to choose a notebook hard disk. Why use a notebook hard disk? First, the anti-seismic effect is stronger than the 3.5-inch large hard disk, and the low power consumption is generally about 6W! Of course, you can also use CompactFlash, DOM electronic hard disk and other storage systems, but the price is relatively higher.

B. Memory purchase: The memory generally uses ordinary PC memory, 256M DDR is almost enough, of course, 512 is more cool!

C. Chassis purchase: Due to the limited space of the car, of course, the on-board computer uses a relatively small chassis to facilitate installation and reduce the occupied space. Holly Technology's CARPC case is very suitable for cars. It only has a large dictionary size and is easy to place. In addition, Holly Technology is currently developing a chassis with a slot-loading optical drive, which is more attractive.

D. Motherboard purchase: Car computers are much earlier and more common in developed countries than domestic ones. Currently, VIA's EPIA series ITX motherboards are widely used abroad. VIA's WPIA-M10000 is the first choice and the price is moderate. The reason for choosing VIA's low-power motherboard is also very simple. The first is low power consumption and high temperature in the car. This requires that the power consumption of the motherboard is low, and there is no too high heat generation, otherwise it is prone to crashes; Compact, suitable for installation in the car; integrated graphics, sound card, CPU! Although the so-called sparrow is small and has all the internal organs, the power consumption of the board is about 40W under normal operation. Of course, you can also buy other VIA models such as: EPIA-MII12000, EPIA-PD10000, etc. Of course, the price is also high, and the low point is the ECS elite C3VCM2, which also uses VIA CPU and chipset (of course VIA is more trustworthy, after all, CPU and chipset are developed by ourselves)

E. Display purchase: The on-board computer is limited to the size of the space. The 8-inch or 7-inch small screen is a better choice. Of course, it is best to have a touch function for easy operation; there are desktop and telescopic, you can Choose according to your economic affordability; in addition, it is best to buy with VGA, which has clearer images than AV

F. Power supply purchase: The power supply of the on-board computer can be said to be the center of gravity of the entire on-board computer CARPC, and the power is the source! Many early on-board computers adopted the inverter solution! After all, the inverter solution is not the best choice. DC to AC has certain safety risks. In addition, the conversion efficiency of DC to AC is also a problem. At present, DC / DC-ATX car power supply is the best solution. Heli Technology is also the earliest and most professional provider of car DC / DC-ATX in China, and it is worth recommending! Choose the DC / DC power supply and pay attention to the following points:

* The on-board computer DC / DC power supply needs to be stabilized: the power supply of the car is unstable. When the car starts or accelerates, it will have an impact on the power supply of the motherboard. If the motherboard's ability to withstand the power supply is weak, it may easily crash or fail to operate. Normal situation. There is an unregulated DC-ATX power supply abroad, which cannot be used in the car. You must pay attention to this when purchasing. There is a DC-ATX power supply purchased in the United States in China. After buying it, it was found that the 12V unregulated power supply Can not be used, it can be said to be garbage.

* Wide voltage input DC / DC power supply: Since the voltage of the car will drop to about 8V at the moment of fire, then we must control the DC input range below 8V to avoid CARPC restarting and crashing in the case of low voltage , Damage the motherboard, etc., you need to pay attention to whether it is 7-24V input and the output is standard ATX. Of course, the cost of overpayment will be higher

* It is best to use the on-board computer DC / DC power supply with ITPS function: (ITPS-Introducing the Auto Power Sequencer) Simply put, it is to use the car ACC switch to control the opening and closing of CARPC. This function is very suitable for CARPC, when you hit the key When ACC or ON, the DC power will send a power-on signal to the host. When the key is turned OFF for a certain time, the DC power will send a power-off signal to the host. Maybe you do n’t want to turn on CARPC automatically, you just need to connect a switch to the signal Just control. of course. The ITPS function truly realizes the automatic switch with the vehicle, and it will automatically cut off the power supply when stopping, preventing the exhaustion of the car battery. Of course, the price with ITPS function is higher than that without, this is understandable http: //
annex.