? The microcontroller (MCU) of the automobile power upgrade is the core of the automobile electronic control unit ECU. With the CPU as the core, it is a microcomputer integrated on a chip. ECU is the general term for the circuit board including microcontrollers and related peripheral devices. It is the application system of microcontrollers in automobiles. Embedded system is a computer system embedded in a control object. It is not mainly used for calculation, but for control. ?
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? Car power modification electronic control system: the hardware includes an electronic control unit (ECU—Electronic Control Unit) and its interfaces, actuators, sensors, etc.; the software is stored in the ECU Among them, the electronic control system is controlled to complete data collection, calculation processing, output control, system monitoring and self-diagnosis, etc. The circuit structures of most ECUs are similar, and changes in control functions depend on changes in software and input and output modules, which vary according to the tasks completed by the control system.
? There are three main forms of ECU input signals, analog signals, digital signals (including switching signals), and pulse signals. The analog signal is converted into a digital signal through A/D and provided to the microprocessor. The control system requires high resolution and accuracy (>10 bits) for analog-to-digital signal conversion. In order to ensure the real-time performance of the measurement and control system, the sampling interval is generally required to be less than 4ms. Digital signals need to be level converted to obtain signals accepted by the computer. The input circuit also converts input signals that exceed the power supply voltage, vary between positive and negative voltages, have high oscillation or noise, or have fluctuating voltages. For specific examples, you can go to Taobao store Xuanbo Workshop to see.