1
what’s the use?
can mileage, driving the outdoor temperature and the like via the display computer to intuitively understand.
2
Advantages:
* can be determined in advance when to add fuel. Trip computer display shows the current fuel can travel many kilometers, more intuitive than the fuel gauge.
· Some models display shows the instantaneous fuel consumption and average fuel consumption, you can clearly know the impact of their driving habits on fuel consumption, thereby improving promptly corrected.
3
Did you know?
· different positions of each vehicle trip computer screen, typically in the vicinity of the dashboard or the hub.
· display information is not necessarily very accurate, can be used as a reference.
4
Technical principle:
is actually driving the display portion of computer data traffic in a computer display on the screen, allowing the driver to intuitively read the relevantInformation and data.
trip computer input signal is converted to digital form, comparing processing based on the stored reference data, to calculate the output value, the output signal is then power-amplified to control a plurality of adjusting servo elements, such as relays and switch. Different
There are a lot of data traffic information may also be calculated by a computer, converted into visual data displayed on the screen, the information displayed different models, only some basic information display mileage, shift position, etc., and some models show the rich, such as the outdoor temperature, the door is not closed tips, mini navigation information, maintenance tips.
It is not only to achieve real-time control and monitoring of critical components of the vehicle, more timely feedback to the driver, thereby greatly enhance the convenience of the car and keep the car in the process.
5
reading:
· trip computer (ECU)
ECU i.e., Electronic Control unit, electronic control unit, also known as “trip computer”, “car computer” and so on. From the use of perspective is a vehicle for computer controller, also known as vehicle-specific microcontroller. It ordinary microcontroller as large scale integration by the microprocessor (CPU), a memory (ROM ,, RAM), an input / output interface (I / O), analog to digital converter (A / D) and shaping, driving, etc. circuit.
ECU operating voltage range of the general (the internal key regulator device) in 6.5-16V, the operating current 0.015-0.1A, operating temperature minus 40-80 degrees. 1000Hz less able to withstand the vibration, thus the probability of damage is very small ECU, the ECU is a core part of the CPU, which has a function of computing and control, when the engine is running, it is collecting signals from the sensors, calculates, and operation result into a control signal to control the controlled object of work. It alsoImplementation, the control input / output interface (I / O) circuitry, and other external memory (ROM ,, RAM); the program memory stored in ROM is precisely calculated and experimental data taken on the basis of a large number, the program inherent in the engine in operation, constantly calculating and comparing the signal acquisition by the respective sensors. The result of the comparison calculation and control of a number of parameters controlling the ignition of the engine, air-fuel ratio, idle, exhaust gas recirculation and the like. It is also self-diagnostics and protection function, when the system failure, it can automatically record code and fault protection using an alternative procedure to read from said program to maintain the inherent operation of the engine in the RAM, the automobile-opening to the repair shop. Under
Normally, RAM will keep your driving record data, becoming ECU learning program to provide the best control state to adapt to your driving habits, this program is also called adaptive program. However, because it is stored in the RAM, the same code as an error, but to remove a battery loses power, all data will be lost.
at present in a number of high-class cars, not only in the application engine ECU, ECU can find traces in many other places. For example, anti-lock braking system, four-wheel drive system, electronically controlled automatic transmission, active suspension systems, air bag system, the multi-adjustable electric seat so arranged the respective ECU. With the improvement of car electronic automation, ECU will be increasing, the line will become increasingly complex. To simplify the circuit and reduce costs, the vehicle information transfer between the plurality of ECU will use a technique called multiplexing communication network, the vehicle ECU to form a network system, i.e. CAN data bus.