| 降低探测线圈所产生磁场的的灵敏度 |
| 添加时间：2019/11/20 13:48:27 浏览次数： |
| 手持金属探测器利用电磁感应的原理，利用有交流电通过的线圈，产生迅速变化的磁场。这个磁场能在金属物体内部能感生涡电流。涡电流又会产生磁场，倒过来影响原来的磁场，引发探测器发出鸣声。灵敏度控制可以帮助控制谈扯呢器的磁场，减轻电磁干扰对其的影响，在遇到干扰的时候，降低探测线圈所产生磁场的的灵敏度，可以减弱外部电磁干扰的影响，从而使探测器工作正常进行。 The hand-held metal detector uses the principle of electromagnetic induction and the coil with alternating current to produce rapidly changing magnetic field. This magnetic field can induce eddy current inside the metal object. The eddy current will produce a magnetic field, which will affect the original magnetic field and cause the detector to sound. The sensitivity control can help to control the magnetic field of the tweezer and reduce the influence of electromagnetic interference. When encountering interference, it can reduce the sensitivity of the magnetic field produced by the detection coil and reduce the influence of external electromagnetic interference, so that the detector can work normally. 金属埋藏在地下，透过厚厚的土层去探测，必然会受到地质结构的影响。土层中含有各种各样的矿物质，它们也会使探测器产生信号，这些矿物质的信号会掩盖掉金属的信号从而造成误报警。用过国产手持金属探测器的人都会有这样的体会，随着靠近土堆、石头、砖头都会发出报警音，这种现象成为“矿化反应”。由于这个原因，国产手持金属探测器只能探测到浅层地表的金属物，金属探测器装有先进的地平衡系统，能排除一切矿化反应，大大提高了仪器的探测深度跟效果。 Metal buried in the ground, through the thick soil to detect, will inevitably be affected by the geological structure. There are all kinds of minerals in the soil layer. They will also make the detector generate signals. The signals of these minerals will cover up the signals of the metal and cause false alarm. People who have used the domestic hand-held metal detector will have such experience. With the approach to the mound, stone and brick, the alarm will sound. This phenomenon becomes "mineralization reaction". For this reason, the domestic hand-held metal detector can only detect the metal objects on the shallow surface. The metal detector is equipped with an advanced ground balance system, which can eliminate all mineralization reactions and greatly improve the detection depth and effect of the instrument. |
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