| 摘要 |
A cable detection device is provided for measuring underground cable conditions. In one embodiment, a detection device is provided, including a handle for detecting underground cables; a digging component for digging, wherein the component is attached to a bottom of the handle; a panel attached on the bottom of the handle; a set of sensors attached to the panel, where the sensors are for detecting presence of cables by magnetic fields before digging occurs or during digging when the digging component undergoes operation, and where the sensors are tunneling magnetoresistance (TMR) sensors that are small in size, and where each sensor is placed evenly on the panel as an n by n array orientation, in order to maximize the sensitivity of the magnetic waves transmitted by the TMRs. The embodied device also includes a display unit attached on top of the handle, wherein the display unit allows an operator of the detecting device to display a three-dimensional image showing a cable being laid underground, when the cable is being found underground; the distance between the underlying cable and ground level both graphically and numerically, based on strength of the magnetic fields reported by the set of sensors attached to the panel. The embodied device further includes a set of wheels attached on the bottom of the handle, allowing the operator to detect the underground cables with mobility. Furthermore, a location locating unit is attached to the panel, allowing the detecting device to identify its present position.
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