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

QI Shengbo, LIU Qun, WANG Shengnan

(College of Engineering, Ocean University of China, Qingdao 266100, China)

Abstract: 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.

Key words: underwater data recorder; hardware in the loop(HIL); LabVIEW; functional test