ECU是汽车上的什么部件?
中央控制器（ECU)是汽车定速巡航系统的一部分
汽车定速巡航系统基本功能
驾驶者依据路况条件选定车速，通过点动开关启动定巡航系统替代油门脚踏控制。并根据坡道、路况对车速的影响，自动调节供油量，车辆实现自动定速行驶。按照驾驶操作规程，当踏下离合踏板进行档位变速或踏下刹车踏板时自动解除定速巡航功能，恢复油门脚踏控制，不增加任何多余的操作动作。通过离合踏板、刹车踏板或点动开关三种操作方式中的任意一种方式均可解除汽车的定速巡航功能，安全、可靠。
手动加速或减速：指令开关分3个按键：“定速”，“加速”和“减速”。点动加速（或减速）按键，车速就会连续增加（或减速），停止点动，此时的车速就是速度控制系统的设置车速。
短时提速自动恢复：在定速巡航系统自动控制下可直接以脚踏油门踏板提速，松开后则自动恢复原设定巡航时速。
自动记忆：依据选择的定速，自动记忆。在因路况处理出现点刹、踏下离合等操作动作，定速巡航系统自动解除。点动恢复按键 ，依据自动记忆，自动恢复原设定定速时速。
VN5E160S VNSE160S 汽车电脑易损驱动IC芯片的用途
VN5E160S-E
Single channel high side driver for automotive applications
VN5E160S-E供应商：拍明芯城
The VN5E160S-E is a single channel high-side driver manufactured in the ST proprietary VIPower M0-5 technology and housed in the tiny SO-8 package.
The VN5E160S-E is designed to drive automotive grounded loads delivering protection, diagnostics and easy 3V and 5V CMOS-compatible interface with any microcontroller.
The device integrates advanced protective functions such as load current limitation, inrush and overload active management by power limitation, over-temperature shut-off with autorestart and over-voltage active clamp.
A dedicated active low digital status pin is associated with every output channel in order to provide Enhanced diagnostic functions including fast detection of overload and short-circuit to ground, over-temperature indication, short-circuit to VCC diagnosis and ON & OFF state open-load detection.
The diagnostic feedback of the whole device can be disabled by pulling the STAT_DIS pin up, thus allowing wired-ORing with other similar devices.
Key Features
GeneralInrush current active management by power limitationVery low stand-by current3.0V CMOS compatible inputsOptimized electromagnetic emissionsVery low electromagnetic susceptibilityIn compliance with the 2002/95/EC european directive
ProtectionsUndervoltage shutdownOvervoltage clampLoad current limitationSelf limiting of fast thermal transientsProtection against loss of ground and loss of VCCOver-temperature shutdown with autorestart (thermal shutdown)Reverse battery protected (a) Electrostatic discharge protection
Diagnostic functionsOpen Drain status outputOn-state open load detectionOff-state open load detectionOutput short to VCC detectionOverload and short to ground (power limitation) indicationThermal shutdown indication