公开(公告)号：US07403012B2

公开(公告)日：2008-07-22

申请号：US11455662

申请日：2006-06-20

申请人： Robert Worsley ,  Jeff Thompson ,  Richard Pearson ,  Mark Royle

发明人： Robert Worsley ,  Jeff Thompson ,  Richard Pearson ,  Mark Royle

IPC分类号： G01V3/11 ,  G01V3/08

CPC分类号： G01V3/081

摘要： A detector for detecting a buried current carrying conductor includes a digital signal processor, magnetic sensors, and a power supply unit. The power supply unit is a switched mode power supply which incorporates a proportional integral differential controller feedback algorithm and which is managed by the digital signal processor. The load and source voltage are monitored by the digital signal processor and a look-up table is used to control a pulse width modulator, which drives a single ended primary induction controller. The digital signal processor processes and compares signals received from the sensors to calculate a depth of a buried conductor. The self-generated noise of the power supply unit does not interfere with the frequency bands of detection of the detector.

摘要翻译： 用于检测埋地载流导体的检测器包括数字信号处理器，磁传感器和电源单元。 电源单元是开关模式电源，其包含比例积分微分控制器反馈算法，并由数字信号处理器管理。 负载和源极电压由数字信号处理器监控，并且使用查找表来控制驱动单端主要感应控制器的脉宽调制器。 数字信号处理器处理和比较从传感器接收的信号以计算掩埋导体的深度。 电源单元的自发噪声不会与检测器的检测频带相干扰。