2025-04-08
How The MCU Processes Sensor Data In Real Time
How the MCU processes sensor data in real time
The MCU (Microcontroller Unit) plays a central role in the collision avoidance system of the Smart Follow Vehicle and is responsible for processing data from various sensors in real time. The following are the detailed steps on how the MCU processes sensor data in real time:
1. Data Acquisition
The MCU receives data from ultrasonic sensors, infrared sensors, etc. through the sensor interface. These sensors usually send data to the MCU at a specific frequency (e.g. tens to hundreds of times per second).
2. Data Storage
The received data is first stored in the buffer of the MCU for subsequent processing, and the MCU usually has an internal memory (e.g., RAM) for temporary data storage.
3. Data Processing
The MCU performs real-time processing of the collected data, including:
- Filtering: removing noise and interference to ensure the accuracy of the data.
- Calculation: calculates the distance, speed and direction of the obstacle based on the sensor data.
- Comparison: compare the calculation results with the preset safety distance threshold to determine whether there is a risk of collision.
4. Decision-making and control
According to the processed data, MCU makes a decision:
- Avoid: if an obstacle is detected within the safe distance, the MCU sends commands to adjust the vehicle's movement direction or speed.
- Parking: if the obstacle is very close, the MCU will send a parking instruction immediately.
- Alarm: If a potential collision risk is detected, the MCU will trigger the alarm system to remind the user to pay attention to safety.
5. Execution and Feedback
The MCU controls the vehicle's motor through the motor drive module to execute avoidance or parking maneuvers. At the same time, the MCU may update the OLED display to show the current status information, such as obstacle distance and vehicle speed.
6. Real-time guarantee
To ensure real-time processing, MCUs usually use an interrupt mechanism to prioritize high-priority tasks, such as collision detection. This mechanism ensures that the MCU can respond and take action quickly at critical moments.
Through these steps, the MCU is able to process sensor data efficiently and ensure that the collision avoidance system of the smart following vehicle can operate reliably in various environments, providing a safe and convenient user experience.
