水下方位/CTD数据记录仪硬件在环测试系统研究

Hardware in the loop test system of underwater azimuth/CTD data recorder

为解决传统的纯软件仿真中存在的误差大、可靠性低等问题,将硬件在环测试技术应用到水下方位/CTD数据记录仪开发过程中。提出了在仿真系统中尽可能接入实物取代相应的数学模型的设计方法,将硬件系统搭建与LabVIEW图形化编程相结合,用于模拟传感器的参数和记录仪的采样过程,并通过参数的比对来验证记录仪工作的可靠性;通过抽取实际海试特征数据完善了仿真参数。研究结果表明,利用该方法可以使仿真结果最大限度地接近实际海况,且可以增加模拟测试系统的实用性和可靠性,也可用于仪器出厂前的全面功能测试。

Aiming at the problems of low reliability and big deviation in the traditional pure software simulation,the hardware in the loop（ HIL） testing technology was applied to the underwater azimuth/ CTD data recorder. The design method was presented that access objects as much as possible to replace the corresponding mathematical model in the simulation system. The hardware system structures and LabVIEW graphical programming were combined to simulate the parameters of the sensors and the sampling process of the recorder,and the reliability of the recorder was also verified by comparing parameters. The simulation parameters were improved by extracting the actual characteristics of sea trial data. The experimental results indicate that this method can make the simulation results utmostly close to the actual sea conditions and increase the practicability and reliability of the simulation testing system,and it can be also used in the comprehensive functional test of the instrument before delivery.