NMOHEMS剖面探头下沉实验装置研制

Design of submergence experiment equipment for NMOHEMS profile probe

针对NMOHEMS对剖面探头深度探测精度的需求,需测试和验证剖面探头的下沉性能参数。以89C52单片机为核心,采用软、硬件结合,设计一种高精度的水库实验装置,对装置进行误差分析,并验证计时器的计时精度。实验结果表明:装置结构简单,工作稳定,自身系统误差为0.00036s,重复性误差为±0.148%,可满足系统对计时精度的要求,获取了剖面探头下沉的实验数据,为测量剖面探头下沉性能参数提供新方法。

According to the demand of depth detection precision of profile probe, the submergence performance parameters of profile probe need to be tested and verified. The precise lake experiment equipment was designed based on software and hardware with 89C52 singlechip as the core. At the same time, error analysis of the equipment was implemented and the precision of timer was verified. The experimental results showed that the device has the advantages of simple structure and stable operation. The system error of device itself is down to0.000 36 s and the repeatability error is 0.148%,which can satisfy the timing accuracy requirement of the system. The experimental data are obtained and a new way of measuring submergence performance parameters of NMOHEMS’profile probe is adoptable.