CAJ | 학술논문

针对江河水下金属管线埋深大、距离长等特点，专门设计了一种基于STM32和CPLD的电磁信号发送机，为电磁法探测水下金属管线提供人工场源。介绍了水下金属管线探测仪电磁信号发送机的设计方法，根据实际探测情况建立了发送机信号输出回路的物理模型，推导了输出回路的数学表达式并进行了仿真，描述了发送机电路结构与输出电流的测量方法，仿真和样机实验结果表明，发送机设计方法可行，输出信号频率稳定，最大输出功率可达1000 W，电流测量相对误差约2％，可为水下金属管线的电磁测深提供能量充足且稳定的电磁信号。
침대강하수하금속관선매심대、거리장등특점，전문설계료일충기우STM32화CPLD적전자신호발송궤，위전자법탐측수하금속관선제공인공장원。개소료수하금속관선탐측의전자신호발송궤적설계방법，근거실제탐측정황건립료발송궤신호수출회로적물리모형，추도료수출회로적수학표체식병진행료방진，묘술료발송궤전로결구여수출전류적측량방법，방진화양궤실험결과표명，발송궤설계방법가행，수출신호빈솔은정，최대수출공솔가체1000 W，전류측량상대오차약2％，가위수하금속관선적전자측심제공능량충족차은정적전자신호。
Aiming at the features of great buried depth and long distance, a more powerful electromagnetic signal transmitter was designed based on STM32 and CPLD, the transmitter was used for the detection of metal pipeline which was buried under rivers.This paper introduced the design method of the transmitter in detail.According to the actual situation, a physical model and the calculated mathematical expression of electromagnetic signal transmitting loop were established.A series of measurement experiment was carried out using the prototype transmitter.The simu-lation and experimental results show that the transmitter is reliable in work .The maximum output power can reach 1 000 watts and the relative error of current measurement is about 2%, it can provides powerful and stable electromag-netic signal for depth detecting of underwater metal pipe .