A method of aircraft semaphore processing based on rs422 serial port digital communication

Abstract

The invention relates to an aircraft semaphore processing method based on RS422 serial digital communication. An aircraft is provided with a task machine system. The method comprises the steps that 1, the task machine system receives data input by multiple sensors, wherein each sensor correspondingly has a proportion parameter; 2, whether each received sensor data has a symbol or not is judged, and if the sensor data has the symbol, the received sensor data is converted through the formula that character data=rounding[the sensor data / the corresponding portion parameter]; 3, according to an RS422 communication protocol, the converted character data of the sensors are combined into a data package to be sent. According to the method, cost of a digital system or communication device is reduced, the flexibility, the university and the expansibility are good, and the reliability is high.

Description

technical field [0001] The invention belongs to a digital signal processing method for serial port communication. Background technique [0002] Due to the strong anti-interference ability of RS422 / 485 communication signals, it is widely used in the data transmission between short-distance digital systems, such as the communication between the upper computer and the lower computer in the digital communication system, and the communication between the subsystems in the control system. data transfer between. As the data sender, in the process of data transmission, the physical quantity needs to be converted into the original character code according to the communication protocol and sent out. Generally, it can be realized by direct shifting according to the data communication protocol. However, this method is not flexible and general, and the code implementation is tedious and cumbersome. Once the communication protocol is changed a little, the entire code needs to be changed,...

AI Technical Summary

Problems solved by technology

However, this method is not flexible and general, and the code implementation is tedious and cumbersome. Once the communication protocol is changed a little, the entire code needs to be changed, which brings about error-prone problems in software changes.