发明授权
- 专利标题： Detector for detecting a buried current carrying conductor using electromagnetic radiation of predetermined frequencies
- 专利标题（中）： 用于使用预定频率的电磁辐射检测埋入载流导体的检测器
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申请号： US11455662申请日： 2006-06-20
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公开(公告)号： US07403012B2公开(公告)日： 2008-07-22
- 发明人: Robert Worsley , Jeff Thompson , Richard Pearson , Mark Royle
- 申请人： Robert Worsley , Jeff Thompson , Richard Pearson , Mark Royle
- 优先权： GB0512566.1 20050620
- 主分类号： G01V3/11
- IPC分类号： G01V3/11 ; G01V3/08
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.