Question:
computer What is the traffic
Answer:
that is, the engine ECU
most modern cars with electronic fuel injection system, which has a square box shape of the control components called , ECU more description, some people call it a computer, some people call it the computer, also called the microprocessor, then it is actually what things?
To put it simply, ECU from computer components and peripheral circuits. The computer is integrated on a single chip microprocessor (CPU), memory and input / output interface unit. ECU is the main part of the computer, and the core pieces of the CPU. ECU will be the input signal into digital form, according to comparison data storage processing, the output value is calculated, then the output signal power amplifier to control a number of servo-conditioning components, such as relays and switches and so on. Therefore, ECU is actually a (Electronic Control Unit), it is by the input circuit, output circuit, such as computer and is composed of three parts. input circuit
sensors and other devices to receive input signal filtering on the signal processing and amplification, and then converted to a certain level of input voltage. From the sensor to the ECU input signal circuit has both analog signal digital signal input circuit A / D converter can convert analog signals to digital signals, and then passed to the computer. Pretreatment of the above-mentioned computer has been processing the signal and data processing to the output circuit. Output circuit to the power amplifier of digital information, and some would also like to revert to the analog signal to drive the regulator charged with the work of servo components.
in some high-class cars, the engine is not only the application of ECU, the other can be found in many places across the ECU. For example, anti-lock braking system, 4-wheel drive system, electronically controlled automatic transmission, active suspension systems, airbag systems, electronically controlled multi-adjustable seats are equipped with their own ECU. With the car to improve electronic automation, ECU will be more and more lines will be increasingly complex. To simplify the circuit and reduce costs, a number of vehicles the transmission of information between the ECU will be using a technology called multiplexing communications network, the ECU will be a whole network system, that is, CAN data bus.
2006-04-09
问题:
什么是行车电脑
回答:
也就是ECU
现代轿车发动机大都用电子燃油喷射系统，其中有一个形似方盒子的控制元件叫“ECU”，ECU的称谓较多，有人称它为电脑，有人称它为微机，还有人称它为微处理器，那么，它实际上是个什么东西呢？
简单地说，ECU由微机和外围电路组成。而微机就是在一块芯片上集成了微处理器（CPU），存储器和输入／输出接口的单元。ECU的主要部分是微机，而核心件是CPU。ECU将输入信号转化为数字形式，根据存储的参考数据进行对比加工，计算出输出值，输出信号再经功率放大去控制若干个调节伺服元件，例如继电器和开关等。因此，ECU实际上是一个“电子控制单元”（Electronic Control Unit），它是由输入电路、微机和输出电路等三部分组成。
输入电路接受传感器和其它装置输入的信号，对信号进行过滤处理和放大，然后转换成一定伏特的输入电平。从传感器送到ECU输入电路的信号既有模拟信号也有数字信号，输入电路中的模／数转换器可以将模拟信号转换为数字信号，然后传递给微机。微机将上述已经预处理过的信号进行运算处理，并将处理数据送至输出电路。输出电路将数字信息的功率放大，有些还要还原为模拟信号，使其驱动被控的调节伺服元件工作。
目前在一些中高级轿车上，不但发动机上应用ECU，在其它许多地方都可发现ECU的踪影。例如防抱死制动系统、4轮驱动系统、电控自动变速器、主动悬架系统、安全气囊系统、多向可调电控座椅等都配置有各自的ECU。随着轿车电子化自动化的提高，ECU将会日益增多，线路会日益复杂。为了简化电路和降低成本，汽车上多个ECU之间的信息传递就要采用一种称为多路复用通信网络技术，将整车的ECU形成一个网络系统，也就是CAN数据总线。
2006-04-09