Automotive Camera and Sensor System

Components

• Raspberry Pi 4 running Raspbian OS

• 4-Channel Optocoupler Photoelectric Isolator for turn signal and reverse inputs to Pi

• 4-Channel Video Multiplexer

• IR Transmitter to emulate remote control of Video Multiplexer

• RCA to HDMI Converer

• HDMI to PiCamera Converter

• 12V-5V Buck Converter

• BMP388 Barometric Pressure Sensor

• DFRobot SEN0192 Digital Microwave Sensor (Blind Spot)

• JSN-SR04T Ultrasonic Sensors

• MPU6050 6-axis Accelerometer Gyroscope Sensor

Design Considerations

Secondary Raspberry Pi to handle all sensors and cameras

• • Most sensors are very well documented for use with Raspbian OS. Development will be much simpler and more stable compared to developing scripts for LineageOS

  • Current build of LineageOS from KonstaKANG has issues with camera apps, making Android app development for camera purposes not likely

  • A Java application can be used to display the desired data to be accessed over LAN

Power Supply

• • Use Buck-boost converter to regulate the unstable 13-14.5V from the running engine to a stable 12V

  • Use additional buck-boost converter to reduce 12V to 5V

    • • Most of the accessories require 5V input

      • Separate power source for accessories to prevent unnecessary loads on the Pi