UAV-borne semi-aerial transient electromagnetic and magnetic method cooperative acquisition system and method

Abstract

The disclosure provides a UAV-borne semi-aerial transient electromagnetic and magnetic method cooperative acquisition system and method, including a drone, a transient electromagnetic receiving coil, a magnetic sensor and an acquisition recorder; the magnetic sensor is carried on On the drone and connected to the acquisition recorder, the electromagnetic receiving coil is connected to the drone through an insulated wire; the transient electromagnetic receiving coil at least includes an elliptical coil skeleton, and the end of one end of the long axis of the elliptical coil skeleton is provided with a coil The head, the other end of the long axis is provided with a coil tail, and the two ends of the short axis of the elliptical coil frame or the positions close to the two ends of the short axis are symmetrically provided with coil flanks; the receiving coil described in the present disclosure adopts a streamlined structure design, During the flight, the influence of wind factors can be effectively reduced, and the quality of data collection can be improved.

Description

technical field [0001] The present disclosure relates to the technical field of geophysical detection, and in particular to a UAV-borne semi-aerial transient electromagnetic and magnetic collaborative acquisition system and method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Transient electromagnetic method is a geophysical method widely used in the fields of resource exploration, geological structure exploration, hydrological survey and groundwater survey. Aeronautical transient electromagnetic uses the helicopter system to place the entire transient electromagnetic transceiver device in the air for detection. It has the characteristics of flexibility and high detection efficiency, and its development is relatively mature in the West. The semi-aerial transient electromagnetic method is a new method developed on the basis of the gro...

AI Technical Summary

Problems solved by technology

In terms of receiving coil design, in order to avoid interference from the aircraft, the general carrying method is mostly a pod-type soft connection, but this method is susceptible to interference from external movement characteristics, especially when the movement speed is not as fast as a helicopter. For example, Due to changes in wind force, weather factors, improper operation of the UAV operator, etc., the receiving coil is always in motion with the UAV in the air, which will cause wind resistance, shaking, cutting magnetic force lines, etc., resulting in large deviations in the received data, and the reliability of the data is difficult. Guarantee; the circuit system, amplification system, and attitude system of the traditional receiving coil are mostly arranged in the center of the coil, occupying the internal data acquisition area of ​​the receiving coil, and its system is also susceptible to interference, which affects the normal data collection; the traditional attitude sensor can only collect the attitude of the coil In actual field operations, more comprehensive information is needed to provide support for data interpretation, such as air pressure, temperature, etc.

In terms of receiver design, the existing receivers are large in size and high in mass, resulting in excessive external loads on the UAV when carrying the receiver, which cannot guarantee the flight speed of the UAV, and will reduce the speed of the UAV. The flight time of the drone is low, and the data collection efficiency is low and there are potential safety hazards; carrying heavy loads for a long time will easily cause hardware loss of the drone, increase maintenance costs, and reduce the service life of the drone; traditional transient electromagnetic receivers are not easy to carry During data collection, the receiver is under the drone, and there are certain difficulties in data transmission. In addition, sometimes there are mountains blocking the signal, which makes it impossible to achieve effective quality control of the collected data.

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