What is UART in Aviation? (Universal Asynchronous Receiver-Transmitter)

The Universal asynchronous receiver-transmitter (UART) is a crucial component in aviation communication systems. It is responsible for converting parallel data into serial data and vice versa, enabling efficient and reliable data transmission between different avionic devices. In this article, we will explore the role of UART in aviation and how it contributes to the smooth operation of various aircraft systems.

Understanding the Universal asynchronous receiver-transmitter (UART)

The Universal asynchronous receiver-transmitter, commonly known as UART, serves as an interface between avionic devices that communicate through asynchronous serial protocols. It allows the transmission and reception of data between different systems, such as flight computers, navigational aids, autopilot systems, and more. The UART accomplishes this by converting parallel data, which is represented in multiple bits simultaneously, into serial data, which is transmitted one bit at a time.

The UART’s primary function is to ensure reliable and error-free data transfer by synchronizing the communication between devices. It achieves this by employing a technique called buffering. The UART receives a stream of incoming data, which it stores in a buffer. It then transmits the data from the buffer at a predetermined rate, ensuring that the data is transmitted without loss or corruption.

Furthermore, the UART maintains synchronization between the transmitting and receiving devices by including start and stop bits in each data frame. The start bit signals the beginning of a data frame, while the stop bit indicates its end. These bits allow the receiving device to identify when a new data frame starts and ends, facilitating accurate data interpretation.

Benefits of Universal asynchronous receiver-transmitter in Aviation

The UART plays a vital role in aviation communication systems, offering several benefits that contribute to the safe and efficient operation of aircraft. Some notable advantages of UART in aviation include:

1. Efficient Data Transmission: With its ability to convert parallel data into serial data, the UART enables efficient and streamlined data transmission between avionic devices. By transmitting data one bit at a time, it allows for faster and more reliable communication, reducing the chances of data loss or corruption.

2. Simplified System Design: The UART’s standardized interface simplifies the design and integration of avionic systems. It provides a common communication protocol that can be utilized by multiple devices, making it easier to connect various components and ensure interoperability. This simplification in system design contributes to cost savings and more efficient development processes.

3. Flexibility: The UART supports a wide range of data transmission rates, allowing for flexibility in communication between different avionic devices. This adaptability ensures compatibility with various systems that may operate at different speeds, enhancing overall communication effectiveness.

4. Error Detection and Correction: The UART incorporates error detection and correction mechanisms to ensure the integrity of transmitted data. These mechanisms, such as parity check and cyclic redundancy check (CRC), help identify and fix errors that may occur during transmission. By detecting and correcting errors, the UART enhances the reliability of data communication in aviation systems.

Overall, the Universal asynchronous receiver-transmitter (UART) plays a crucial role in the reliable and efficient transmission of data between avionic devices. Its ability to convert parallel data into serial data, synchronize communication between devices, and detect/correct errors ensures the smooth operation of various aircraft systems.

For More: What is VMO in Aviation? (Maximum Operating Speed)