16 Bits MCU Based Aerial ARINC429 Bus Data Communication System

摘要

With the airborne electronic device functions integrated in modern aircraft rapidly, such as the novel navigation system is integrated with radar, GPS, inertial navigation device and airborne computer, amount of the information communicated among systems or between systems and parts increases dreadfully, so the reliability, high speed and universal interfaces of data communication system become more and more important. Presently, quite a number of warplanes, civil aircrafts and transport aircrafts (BOEING, AIRBUS etc.) use the airborne data bus ARINC429 to implement communication. So detecting airborne devices which use ARINC429 bus must adopt suited bus devices to communicate in the ground. This paper aim at the key technology ARINC429 bus data communication in airborne devices ground detect, and a 16 bits MCU based data communication system is designed and implemented. The communication system can not only share every aerial electronic system information and comprehensive function, but also can transmit airborne electronic devices work states and fault information by data bus, which bring about convenience and universal to airborne device detecting and maintenance. The whole system is composed of board controller unit, transmit/receive unit, RAM array unit, host/client communication unit, clock monitor unit and logic control unit. It strictly executes ARINC29 digital information transmission specification, uses hardware odd-even check and software circle redundancy check to complete system intelligent correction, the system data transmission veracity has been improved obviously.