Airborne electromagnetic signal observation device and system carried by unmanned aerial vehicle
View Patent ↗The present application proposes an airborne electromagnetic signal observation device and a system carried by an unmanned aerial vehicle (UAV). The device includes an inner frame, an outer frame and a flexible support that are connected to each other. The device and the system can enhance the stability of the sensor in flight and greatly suppress motion noise.
1. An airborne electromagnetic signal observation device carried by an unmanned aerial vehicle (UAV), comprising:
an inner frame, an outer frame and a flexible support that are connected to each other, wherein the surface of the outer frame is provided with a plurality of mount points for connecting cables; the flexible support is installed under the UAV, the flexible support is of a multi-spoke umbrella-like structure, and the top of each spoke is connected to a mount point of the outer frame by a cable;
the outer frame is of a hollow closed structure, and the inside of a tube of the outer frame is used to install each electronic unit of a receiver; the surface of the outer frame is provided with one or more cable interfaces, and the cable interfaces are used to connect sensor output signal cables; and the inner frame is used to accommodate an inductive magnetic sensor.
2. The device of claim 1 , wherein the inner frame and the outer frame are horizontally coplanar and concentric.
3. The device of claim 1 , wherein the overall shape of the outer frame includes a circle or a square, and the cross-sectional shape of the outer frame tube includes a circle or a square.
4. The device of claim 1 , wherein the inner frame and the outer frame are connected by a shock absorbing material.
5. The device of claim 1 , wherein the number of cable interfaces on the surface of the outer frame is set according to the number of sensors accommodated in the inner frame.
6. The device of claim 1 , wherein the inner frame accommodates a single Z-axis inductive magnetic sensor, or a dual-axis inductive magnetic sensor, or a three-axis inductive magnetic sensor.
7. The device of claim 1 , wherein the number of spokes in the flexible support is the same as the number of mount points on the outer frame, one end of each cable is connected to the top of the spoke, and the other end is connected to the mount point on the outer frame.
8. The device of claim 6 , wherein when the inner frame is used to accommodate the single inductive magnetic sensor, the overall shape of the inner frame includes a circle or a square, the cross-sectional shape of the inner frame tube includes a circle or a square, the inside of the inner frame tube is used to install each electronic unit of the inductive magnetic sensor, and the surface of the inner frame is provided with a cable interface for connecting a sensor output signal cable;
when the inner frame is used to accommodate the dual-axis inductive magnetic sensor, the inner frame is composed of two orthogonal tubular frames, one of which is used to observe electromagnetic signals in the advancing direction of the UAV, and the other is used to observe electromagnetic signals in the vertical direction: the respective overall shapes of the two orthogonal tubular frames of the inner frame include circles or squares; the cross-sectional shapes of tubes of the two orthogonal tubular frames of the inner frame include circles or squares, the insides of the two orthogonal tubular frames of the inner frame are used to install each electronic unit of the inductive magnetic sensor, and the surfaces of the two orthogonal tubular frames are each provided with a cable interface for connecting a sensor output signal cable;
when the inner frame is used to accommodate the three-axis inductive magnetic sensor, the inner frame is composed of three orthogonal tubular frames, which are respectively used to observe electromagnetic signals in the advancing direction of the UAV, electromagnetic signals in the vertical direction, and electromagnetic signals in the horizontal direction perpendicular to the advancing direction of the UAV; the respective overall shapes of the three orthogonal tubular frames of the inner frame include circles or squares, the insides of the three orthogonal tubular frames of the inner frame are used to install each electronic unit of the inductive magnetic sensor, and the surfaces of the three orthogonal tubular frames are each provided with a cable interface for connecting a sensor output signal cable.
9. An airborne electromagnetic signal observation system carried by a UAV, comprising: a UAV, and an inner frame, an outer frame and a flexible support that are connected to each other, wherein the surface of the outer frame is provided with a plurality of mount points for connecting cables; the flexible support is installed under the UAV, the flexible support is of a multi-spoke umbrella-like structure, and the top of each spoke is connected to a mount point of the outer frame by a cable;
the outer frame is of a hollow closed structure, and the inside of a tube of the outer frame is used to install each electronic unit of a receiver; the surface of the outer frame is provided with one or more cable interfaces, and the cable interfaces are used to connect sensor output signal cables; and the inner frame is used to accommodate an inductive magnetic sensor.
10. The system of claim 9 , wherein the inner frame and the outer frame are connected by a shock absorbing material.