基于ARM内核的双侧向深浅电流发生电路研究

Research on dual-side deep-shallow current generator circuit based on ARM kernel

常见的恒功率双侧向测井仪在高温小井眼测井时,电源板产生的深侧向正弦电流和浅侧向正弦电流容易出现温漂的现象。针对此问题,设计了一种基于ARM内核的正弦波发生电路,给出了核心程序控制流程,175℃高温耐受保温实验验证了新方案可靠、稳定。为缩减仪器制造成本,提高仪器集成度提供新思路。

When common constant power dual lateral logging tool is used in high temperature slim hole logging,the deep lateral sinusoidal current and shallow lateral sinusoidal current produced by power supply board are prone to temperature drift. To solve this problem,a sine wave generator based on ARM kernel is designed. The flow chart of core program control is given. The experiment of heat preservation at 175℃ proved that the scheme is reliable and stable. It provides a new idea for reducing the cost of instrument manufacturing and improving the instrument integration.