摘要
飞机上的电气线路庞大复杂,而且人工不易检测,费时费力,基于CAN(Controller AreaNetwork,控制器局域网)总线的飞机电气附件静态测试相当于CAN总线上的一个节点,在理论上,在CAN带负载的能力范围内可以随意增加被测对象的数目来满足飞机上大规模电气线路的检查。整个系统主要由上位机和终端机两部分组成。上位机由51单片机控制CAN控制器SJA1000和CAN收发器TJA1050形成的通讯模块。主控计算机选择需要测试的导线,并通过串口发给上位机51单片机,51单片机通过CAN控制器和CAN收发器将指令转换为CAN信号并发往CAN总线。终端机由51单片机控制CAN控制器和CAN收发器接收到对应的控制指令时,51单片机将指令解析出来发送给测试电路,测试电路选择相应导线进行测试。
The electrical circuit on the aircraft is huge and complex, and the manual is not easy to detect, time-consuming and laborious, the static test of aircraft electrical accessories based on CAN (Controller Area Network, controller LAN is equivalent to a node on the CAN bus. Theoretically, within the capacity of the CAN with load, the number of objects under test can be in-creased at will to meet the inspection of large-scale electrical circuits on the aircraft. The whole system is mainly composed of upper computer and terminal. The upper computer is a communication module composed of CAN controller SJA1000 and CAN transceiver TJA1050 controlled by 51 single chip microcomputer. The main control computer selects the wire to be tested and sends it to the host computer 51 single chip microcomputer through serial port, the 51 single chip microcomputer converts the instruction into CAN signal through CAN controller and CAN transceiver and sends it to CAN bus. When the terminal computer controls the CAN con-troller and the CAN transceiver to receive the corresponding control instructions, the 51 single-chip microcomputer parses the in-structions and sends them to the test circuit, and the test circuit selects the corresponding wire for testing.
出处
《科技创新与应用》
2019年第12期68-70,共3页
Technology Innovation and Application
