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观瞄装置是武装直升机实现武器精确瞄准和准确命中的关键设备,在分析其工作原理和检测需求的基础上,设计了以PC/104嵌入式系统为控制核心的检测系统;通过ARINC429总线和RS422主从式通信向观瞄装置下发控制命令,接收观瞄装置回复的自检、状态、指示和参数等数据;采用模块化设计方法开发了应用软件,应用多线程技术并以查询方式实现了数据接收的实时性,采用限时接收和计算校验和的方法进行数据通信的差错控制;检测系统集数据通信、实时数据处理、结果显示于一体,实现了对检测任务的调度和控制.
The sight and sight device is the key equipment for the aiming and accurate hitting of a weapon in the helicopter gunship. Based on the analysis of its working principle and detection requirements, a detection system based on the PC / 104 embedded system is designed. The ARINC429 bus and RS422 Master-slave communication sends control commands to the sight-seeing device and receives data such as self-inspection, status, indication and parameters returned by the sight-seeing device. The application software is developed by using the modular design method, the multi-thread technology is applied and the query is realized Real-time data reception, the use of limited time receive and calculate the checksum method for data communication error control; detection system set data communications, real-time data processing, the results show in one, to achieve the task of scheduling and control testing.