The serial port baud rate refers to the rate of data transmission in the serial port communication system. In UART serial communication, data is transmitted in the form of bits, and the baud rate refers to the number of bits transmitted per second. In serial communication, the baud rate is a very important parameter, because the baud rate can directly affect the quality and efficiency of communication. This article will introduce the concept, classification, selection and application of serial port baud rate.
Classification of serial port baud rate
Serial port baud rates include the following:
9600 baud rate: This is one of the most commonly used baud rates in serial communication and can transmit 9600 bits per second.
19200 baud rate: This is a higher baud rate than 9600 baud rate and can transmit 19200 bits per second.
38400 baud rate: This is a higher baud rate than 19200 baud rate and can transmit 38400 bits per second.
57600 baud rate: This is a higher baud rate than 38400 baud rate and can transmit 57600 bits per second.
115200 baud rate: This is the highest serial baud rate and can transmit 115200 bits per second.
Serial port baud rate selection
When selecting the serial port baud rate, you need to choose it based on the actual application. Usually, the selection of baud rate depends on the communication distance, data volume and communication quality requirements. Generally speaking, the higher the baud rate, the faster the communication speed, but it may also result in loss of transmitted data or shorter transmission distance. Therefore, multiple factors need to be considered when selecting the serial port baud rate.
Application of serial port baud rate
Serial baud rate is widely used in IoT in many application scenarios, such as:
Industrial control: In the field of industrial control, serial communication is widely used to communicate with various sensors, actuators and controllers. Different industrial equipment may require different serial port baud rates, so the selection needs to be based on the actual situation.
Data acquisition: In terms of data acquisition, serial communication can be used to collect data from various sensors and devices. Equipment such as weather stations and environmental monitoring stations usually use serial communication for data collection.
Remote monitoring: In terms of remote monitoring, serial communication can be used to connect various devices, such as PLC (programmable logic controller), smart meters, screens, etc.
PC serial port communication: PC can communicate with external devices through serial port, such as connecting modem, printer, etc.
In short, the serial port baud rate is one of the very important parameters in serial communication and needs to be selected according to the actual application situation. Different application scenarios may require different serial port baud rates, so selection needs to be made based on specific circumstances. At the same time, when using serial communication, you also need to pay attention to issues such as data transmission quality and distance. You can choose different serial baud rate devices such as serial servers, ECAN intelligent protocol conversion equipment, 4G DTU and other communication equipment to ensure the stability of communication. and reliability.