What is the use of the on board computer, and what is the role of the on board computer in the car?

The trip computer is a high-end electronic product that uses high-end technology to read car data。When the system fails, the MIL light or the CHECKENGINE warning light is on, and the powertrain control module (PCM) stores the fault information in the memory, and the fault code can be read out of the PCM through a certain program. According to the prompt of the fault code, the maintenance personnel can quickly and accurately determine the nature and location of the fault.

The vehicle model inspection data equipped with the driving computer can reach 20-50 items, such as instant fuel consumption, average fuel consumption, remaining fuel volume, mileage, engine speed, intake pressure, acceleration performance, coolant temperature, these relatively basic data can be detected by each car, so that the owner or maintenance personnel can intuitively view the fault information.

Precautions for car use.

Every time you start the car, a large number of icons will appear in the middle of the dashboard, which will automatically turn off after a few seconds. This process is the self-inspection process of the car. When the self-test is completed, the corresponding icon will turn off, and the faulty icon will continue to illuminate to alert the driver.

The engine self-test light illuminates after each start of the car, indicating that the engine is in the process of self-testing. When the self-test is completed, if the engine is not found to be faulty, the icon will disappear (the whole self-test process lasts for a few seconds), if the icon continues not to go out, it means that the vehicle's engine is faulty, then it is best to go to the 4S shop for further testing.

1. The car driving computer is generally used to calculate instantaneous fuel consumption, mileage, temperature, average speed, average fuel consumption, etc., and some can also set reminders for maintenance, remind the driver to rest and other functions.

2. Not all EFI trucks have a driving computer, and many of the current cars generally have a driving computer, and some of them are incomplete. Today's cars are basically EFI trucks, and the cars with carburetors that were a little more advanced in the past should also have a trip computer.

3. Generally, the driving computer has a small screen on the dashboard or center console, which can display the above information for the driver's reference.

Electronic control unit ECU

Most of the modern car engines use electronic fuel injection systems, which have a control element called "ECU" that resembles a square box, ECU is called a computer, some people call it a microcomputer, and some people call it a microprocessor, so what is it actually a thing?

To put it simply, an ECU consists of a microcomputer and peripheral circuits. A microcomputer is a unit that integrates a microprocessor (CPU), memory, and input and output interfaces on a single chip. The main part of the ECU is the microcomputer, and the core part is to convert the input signal into digital form, compare and process according to the stored reference data, calculate the output value, and then the output signal is amplified by power to control several regulating servo elements, such as relays and switches.

Therefore, the ECU is actually an "electronic control unit" (electronic

control

unit), which is composed of three parts: input circuit, microcomputer and output circuit.

The input circuit receives the input signal from sensors and other devices, filters and amplifies the signal, and converts it to an input level of a certain volt. The signal sent from the sensor to the ECU input circuit has both analog and digital signals, and the analog-to-digital converter in the input circuit can convert the analog signal to a digital signal and then pass it to the microcomputer. The microcomputer calculates and processes the pre-processed signal and sends the processing data to the output circuit.

The output circuit amplifies the power of the digital information, and some of it is also restored to the analog signal, so that it drives the controlled regulating servo element to work.

At present, in some mid-to-high-end cars, ECU is not only used in the engine, but also in many other places. For example, the anti-lock braking system, 4-wheel drive system, electronically controlled automatic transmission, active suspension system, airbag system, and multi-directional adjustable electronically controlled seats are all equipped with their own ECUs. With the improvement of electronic automation of cars, ECUs will increase day by day, and the lines will become more and more complex.

In order to simplify the circuit and reduce costs, the information transmission between multiple ECUs on the car needs to use a technology called multiplexed communication network, which forms a network system of the ECU of the whole vehicle, that is, the CAN data bus.

1 one, will always be the computer and sensors of each widget to process, but some cars have 2, but not running at the same time to increase performance, but for the safety of the formation of a main and a standby, when there is a problem 0, switch to ensure driving safety and experience.

4 points, which are ECU, ABS, anti-theft chips, and airbags. The automotive computing platform represented by the intelligent vehicle information system (** computing system) involves computers, automotive electronics, communication protocols, wireless transmission, GIS GPS and other technologies, and product development is difficult, and the global research in this field is still in its infancy.

Note: The car computer automatically processes the input signals of various sensors according to a predetermined program, and then outputs the signals to the actuator to control the electronic equipment running the car.

Classification of car computers:

At present, automotive computers have been widely used, such as body computers, engine computers, transmission computers and ABS computers. While the number and type of computers available on different models varies, the general trend is to use one main computer to process the input signals from most of the sensors and a few smaller electronic control units to control the other systems.

Composition of a car computer:

The main part of a car computer is a microcontroller, which is a circuit board that integrates a microprocessor (CPU), memory, and input and output interfaces. The microprocessor is the core component of the single-chip microcomputer, the microprocessor converts the input analog signal into a digital signal, and compares and processes it according to the stored reference data to calculate the output value, and the output signal is amplified by power to control the actuator.

Cars generally have 4 on-board computers, namely ECU, anti-theft chips, airbags, ABS, on-board computers are a highly integrated car with multi-class information center.

Cars generally have 4 on-board computers, which are ECU, ABS, anti-theft chips, and airbags.

It stands to reason that a car has only one on-board computer. It's the one the driver sees in the cab. But most of the time, all you have on the car is a few chips. Only those high-end cars will have on-board computers.

There are many, more than three, the engine computer version, the gearbox computer version, the airbag computer version, the body comfort system computer version.

Cars generally only have an on-board computer, which is the core of the car. The engine and gearbox are matched by the on-board computer.

A car can have three on-board computers.

The on-board computer combines various needs such as navigation, entertainment, and daily affairs processing, with a small appearance and high integration.

Depending on the model, the on-board computer is also different, generally there are two driving computers and transmission computers.

Cars generally usually have only one on-board computer, and how many on-board computers a car has depends on the car.

Just one. The on-board computer is a special automotive information product specially developed for the special operating environment of the automobile and the characteristics of the electrical circuit, which has the functions of high temperature resistance, dust resistance and earthquake resistance, and can be integrated with the automotive electronic circuit.

There are several on-board computers in cars, different car on-board computers are not the same, there are many computers on the car, and he can also be called single-chip microcomputer, almost all parts of the car need single-chip microcomputer, that is, computer, because most of the current cars are computer-controlled, so there are a lot of computers.

The actual electronically controlled vehicle has many electrical samples, the higher the level, the more electronic control systems it uses, and the more computer control units it has. Generally, more can reach more than 100 pieces, while less ones can be as little as more than 20 pieces. The computer board on the car generally refers to the ECU of the car, which is equivalent to the motherboard of the CPU on the computer, and this motherboard plays a role in controlling the car.

The car's computer is called an ECU. In addition to this, each core component has its own processor.

There are several on-board computers on the car, which has something to do with the configuration of the car.

There are a lot of computers on the car, you can also call it a single-chip microcomputer, almost all parts of the car need a single-chip microcomputer, that is, a computer, because most of the cars are controlled by computers, so there are a lot of computers. So it depends on the specific model.

There are a lot of on-board computers in the car, there are engine computer version, transmission computer version, airbag computer version, body comfort system computer version, slightly more luxurious car, each mechanical control is connected by a computer.

There are many new things to learn. Nowadays, technology is becoming more and more developed, and with a computer, you can also write homework and answer questions online, which is difficult to operate on a mobile phone.

When you're at leisure, you can even play games like Fighting Landlords and Plants vs. Zombies.

These are good casual games, but online games are not recommended to play, and most teenagers do not have enough self-control, which can make teenagers addicted.

If you are an adult in your twenties and thirties, then I think cars are more useful to you, and now you rarely use computers anymore, unless you are a programming ape.

I have to use a computer every day to work, and I can't do without a computer. The car is a status symbol for an adult, and walking outside if you don't have one, you will feel isolated and back in a primitive society.

After having a car, your relatives will think that you are very promising, you can also take your family out to play, and commuting to work is also a means of transportation, which is convenient for travel. When it rains, it will also protect you from the wind and rain, which the computer can't do.

And the computer is updated quickly, after you buy a computer, there will be a stronger performance and better configuration of the computer in less than half a year, then your computer will become an old model, and there will be a large part of the discount, at this time there is no need to change it. However, the car will not be like this, the car is still very valuable, generally after a few years the car will depreciate, and the new car will be discounted, the so-called early buy early enjoyment.

It is believed that cars and computers are two essential tools in different fields, and that students and office workers are generally inseparable from computers, and they will use computers frequently, and computers are more useful to them; Other non-working adults and car people will prefer cars, which are so integrated into their daily lives that it's hard to imagine what life would be like without them, at least for them.

I think it must be that computers are useful, and they can handle a lot of office work and play a big role in life.

First of all, computers and cars are the products of two fields, now people's work is inseparable from computers, travel crack Kai is also inseparable from cars, in my opinion if you want to make a comparison, computers can be more useful, because many cars also need to use computers to complete.

The car is more useful, the car can take people to various places, even if it is very far away, and the group burns the car is also a common means of transportation, which will be more useful.

With the development of electronic information, the current high-end cars are equipped with a vehicle computer, it is the car's multi-first entertainment information center, to diagnose various performance failures of the car, so what are the main functions of the car computer, how to buy the hardware of the car computer, the following will introduce it to you.

What is an in-vehicle computer.

The on-board computer is a highly integrated multi-vehicle application center, and now only in BMW, Audi and other high-end wide-skin vehicles are equipped with intelligent on-board computer systems, and its main functions are on-board all-round multi-entertainment and GPS satellite positioning system. Professional diagnosis of car status, mobile office application.

The functions of the on-board computer.

The on-board computer has a variety of functions such as entertainment, navigation, and positioning, with a delicate and compact appearance and a high degree of integration. As a new type of product only owned by high-end vehicles, it has five major functions of positioning, network, information, entertainment and security, and has a lot of room for expansion.

How to choose on-board computer hardware.

1. Hard disk purchase.

Usually choose a laptop hard disk, because it has a strong anti-seismic effect, and the power consumption is relatively low, and the power consumption of the best friend is about 6W, in addition to this, you can also choose compactflash, DOM This kind of electronic hard disk, of course, the relative ** is also relatively high.

2. Memory purchase.

The memory can be used in an ordinary computer, 256M memory is enough, of course, the larger the memory, the more comfortable it will be.

3. The number of chassis is for purchase.

Because the interior space of the car is relatively small, when choosing a chassis, you should choose those smaller chassis to facilitate installation and avoid taking up too much space.

4. Motherboard purchase.

Vehicle computer in Western countries used earlier and more common, foreign countries are currently mainly using and VIA EPIA series ITX motherboard, this motherboard power consumption is relatively low, because the temperature in the car is higher, so the power consumption of the motherboard is required to be low, not too heated, otherwise it is easy to crash, and this kind of motherboard is relatively delicate and compact, integrated CPU, graphics card and sound card, very practical and installed in the car.

5. Display purchase.

The display of the on-board computer bureau can not be too large, usually choose an 8-inch or 7-inch screen, preferably with touch function, easy to operate, and it is best to choose a VGA jack, so that the picture of the image is clearer.

6. Power supply purchase.

The power supply can be said to be the center of the entire on-board computer, as a power source must not have any safety problems, the current DC DC-ATX on-board power supply on the market is the best choice.