基于超声测距的空-地状态判别系统研究  

Research on Air-ground State Discrimination System Based on Ultrasonic Ranging

作　　者：吴海涛 史青海[1] 梅彬[1] 聂文明 WU Hai-tao;SHI Qing-hai;MEI Bin;NIE Wen-ming(China Helicopter Research and Development Institute,Tianjin 300000 China)

机构地区：[1]中国直升机设计研究所,天津300000

出　　处：《自动化技术与应用》2023年第9期16-19,共4页Techniques of Automation and Applications

基　　金：工信部资助项目(MJZ-2016-S-43)。

摘　　要：为了满足空-地状态判别系统高可靠性的要求,提出一种新颖的3×2×2系统架构。系统包含三个相同的余度,经表决面输出,可实现一次故障工作。每一个余度包含主备两条支路,经监控面输出当前余度的状态值与有效性。每一条支路采用自监控对策略,检测通道实现空-地状态判别,监控通道提供支路有效性信号。为了克服共模故障,自监控对内采用软、硬件非相似设计,检测通道侧重于硬件实现,监控通道则侧重于软件实现。实验结果显示,空-地状态判别系统测距精度满足0.5级,能够正确输出当前系统的状态值与有效性情况,符合预期设计指标。In order to meet the high reliability of air-ground state discrimination system,the novel system architecture of 3×2×2 is proposed.The system contains three redundancy,which can realize one fault operation through voting surface output.Each redundancy includesprimary and standby branches,and the status value and effectiveness of the current redundancy are output through the monitoring surface.Each branch adopts self-monitoring pair strategy,the detection channel realizes air-ground state discrimination,and the monitoring channel provides branch effectiveness signal.In order to overcome the common mode fault,the self-monitoring internally adopts the non-similar design of software and hardware.The detection channel focuses on the hardware implementation,and the monitoring channel focuses on the software implementation.The experimental results show that the ranging accuracy of the air-ground state discrimination system meets level 0.5,which can correctly output the current system state value and effectiveness,and meet the expected design index.

关 键 词：超声测距 空-地状态 自监控 非相似 

分 类 号：TP274.53[自动化与计算机技术—检测技术与自动化装置]