33 pin 936283-1 TE Type Automotive Connector Pitch Harness Plug With Termin

Basic composition of ECU
Look at the door dog, heat sink and other electronic components. The ECU of specific functions also has an infrared transceiver, sensor, DSP digital signal processor, pulse generator, pulse distribution device, motor drive unit, magnifying unit, strong weakness unit, strong weakness unit, strong weakness unit, strong weakness unit, strong weak Electric isolation and other components. The entire circuit board is designed in an aluminum box, and it is installed on the body sheet metal through the buckle or screw. The ECU generally uses common and functional integration and easy development CPUs. The software is generally written in C language, and it provides a wealth of driver libraries and function libraries. It has a programmer, simulator, simulation software, and software for calibration.
Auto engine electronic control unit (ECU) is the core of the automotive engine control system. According to the different operating conditions of the engine, it can provide the engine with the best air -fuel ratio and the best ignition time, so that the engine is always in the best working state.
ECU structure type
(2) Function introduction
① Enter processing. The microprocessor can only identify the digital signals of 0 to 5V, but there are two types of signals from the sensor to the engine ECU, one is a digital signal and the other is an analog signal. For analog signal, the function of entering the loop is to filter the signal waveform, and for digital signals, its role is to convert a square wave -shaped signal of 0 to 5V after peak cutting.
② A/D (analog/number) converter. The microprocessor cannot directly process the analog signal. The role of the A/D converter is to convert the simulation signal into a digital signal, and then enter the microprocessor for processing.
Digital signal: Signals represented by light pulse with light pulse.
Analog signal: The amplitude of the signal continuously changes with time, that is, the signal has not changed in time.
③ Microvocker composition.
a. Central processor (CPU) is the core of the entire control system, and all data must be calculated in the CPU. It is mainly composed of an operator for arithmetic and logical operations, temporarily stored data, and controls the controller of the signal transmission and control tasks between each device.
b. Memory (RAM, ROM): Masas are generally divided into two types. One is a memory that can be read and writes, called random memory (RAM), which is mainly used to store variable data during computer operations. Another memory is called only read -only memory (ROM), which is used to store a series of control programs.
c. Input and output interfaces are control circuits for CPUs and sensors and actuators, and are indispensable parts of the ECU.
d. Output circuit: Its role is to convert a low -voltage digital signal into a control signal that can drive the actuator to work. Generally, the signal of the CPU output controls the turnover and cut off of high -power electronic components (such as triode), and controls the power supply or iron supply of the actuator to control the action of the actuator.

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