Distributed detection sensor module for unmanned aerial vehicle

Abstract

The utility model discloses a distributed detection sensor module for an unmanned aerial vehicle in the technical field of flight sensors, which comprises a microcontroller unit and at least two inertial measurement units which are respectively arranged in different areas in the unmanned aerial vehicle. According to the utility model, the plurality of distributed inertial measurement units are adopted and are distributed at different positions in the unmanned aerial vehicle, and the plurality of inertial measurement units are easier to obtain flight attitude data according to sensing data of different parts of the unmanned aerial vehicle, so that the unmanned aerial vehicle is more accurate in flight attitude, and the unmanned aerial vehicle is more convenient to use. The independent module inertial measurement unit is more convenient to realize full-temperature calibration, the product precision is effectively improved, the PSI communication technology is adopted on the unmanned aerial vehicle system for the first time, sensor communication and power supply are carried out, and the stability and reliability of the unmanned aerial vehicle system are improved with lower cost.

Description

Technical Field

[0001] This utility model relates to the field of flight sensors, specifically to a distributed detection sensor module for unmanned aerial vehicles (UAVs). Background Technology

[0002] Drones rely on inertial measurement units (IMUs) to detect their flight attitude during flight. Current drone systems generally only integrate IMUs and other sensors on the microcontroller unit. This integrated IMU has shortcomings. For multi-rotor drones, when performing hovering functions, the vibration and noise of the motors and propellers can affect the drone's attitude detection, posing challenges to the drone's flight stability, photography, and video acquisition stability. To improve system stability, more expensive motors and sensors are needed, along with complex fusion algorithms, leading to increased costs. Utility Model Content

[0003] The purpose of this invention is to provide a distributed detection sensor module for unmanned aerial vehicles (UAVs), which solves the problem of high cost of attitude detection for a single inertial measurement unit in existing UAVs.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A distributed detection sensor module for unmanned aerial vehicles (UAVs) includes a microcontroller unit and an inertial measurement unit (IMU). The IMU has at least two units, which are respectively located in different areas within the UAV. The microcontroller unit and the IMU are electrically connected via a two-wire PSI5 communication line.

[0006] As a preferred embodiment of this utility model, the module further includes a base profile for mounting the microcontroller unit and the inertial measurement unit. The base profile is adapted to the internal contour of the UAV and includes a base for mounting the microcontroller unit and an extension for mounting the inertial measurement unit. This embodiment uses a base profile for mounting the microcontroller unit and the inertial measurement unit in the module. The shape of the base profile is set according to the internal shape of the UAV and is used to fit the inner wall of the UAV to reduce space occupation.

[0007] As a preferred embodiment of this utility model, the extension is provided with a hollow groove, the inner edge of the hollow groove is bent outward to form a bent part, the inertial measurement unit is suspended in the hollow groove, and the upper part of the inertial measurement unit is provided with a mounting part for elastic connection with the bent part. In this embodiment, a shock-absorbing pad is integrated on the base profile to reduce the impact of motor vibration on the inertial measurement unit, and in this way, the space occupation is minimized as much as possible.

[0008] As a preferred embodiment of this utility model, the bending part is inclined and has a vertical column on its surface. A shock-absorbing pad is fitted on the column. The column passes through the mounting part and has a nut to tighten the mounting part. This solution saves space while effectively reducing shock by setting a shock-absorbing pad on the bending part and placing the inertial measurement unit on the column.

[0009] As a preferred embodiment of this utility model, the shock-absorbing pad includes a first pad body and a second pad body. The first pad body is a cylinder with an inclined bottom surface and a vertical axis, and its bottom is fitted with the bent part. The second pad body is coaxially arranged above the first pad body, and the mounting part is sleeved on the outside of the second pad body. By setting the shock-absorbing pad of this shape, this solution has shock-absorbing space in multiple directions, which is beneficial for absorbing motor vibration and further reducing space occupation.

[0010] As a preferred embodiment of this utility model, the surface of the microcontroller unit is provided with an interface end, and the surface of the base profile is provided with a groove for accommodating the PSI5 communication cable. The groove is also provided with a buckle. The dual-wire PSI5 communication cable performs data communication while providing power, effectively reducing the amount of wire harness used and providing a basis for lightweighting and low cost.

[0011] The beneficial effects of this utility model are as follows: the module adopts multiple distributed inertial measurement units and distributes them in different positions inside the drone. Multiple inertial measurement units can more easily obtain flight attitude data based on sensor data from different parts of the drone. Furthermore, the independent module inertial measurement units make it easier to achieve full-temperature calibration, effectively improving the accuracy of the product. Moreover, it is the first time that PSI communication technology has been used in a drone system for sensor communication and power supply, thereby improving the stability and reliability of the drone system at a lower cost. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 This is the front view of the present invention;

[0014] Figure 3 This is a side view of the present invention;

[0015] Figure 4 This utility model Figure 3 Enlarged view of the structure of section A in the middle;

[0016] In the diagram: 1. Microcontroller unit; 101. Interface terminal; 2. Inertial measurement unit; 201. Mounting part; 3. Base profile; 301. Cable groove; 302. Mounting hole; 303. Hollowed-out groove; 304. Bending part; 305. Column; 306. Nut; 307. Buckle; 4. Shock-absorbing pad; 41. First pad; 42. Second pad. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1

[0019] like Figure 1-4 As shown, a distributed detection sensor module for a drone includes a microcontroller unit 1 and an inertial measurement unit 2, wherein there are at least two inertial measurement units 2, which are respectively arranged in different areas within the drone. The microcontroller unit 1 and the inertial measurement unit 2 are electrically connected through a two-wire PSI5 communication line.

[0020] This solution employs multiple distributed inertial measurement units 2, positioned at different locations within the UAV. Multiple inertial measurement units 2 make it easier to obtain flight attitude data based on sensor data from different parts of the UAV. Furthermore, the independent module inertial measurement units 2 facilitate full-temperature calibration, effectively improving product accuracy. Moreover, this solution is the first to use PSI5 communication technology in a UAV system for sensor communication and power supply, thereby improving the stability and reliability of the UAV system at a lower cost.

[0021] The module also includes a base profile 3 for mounting the microcontroller unit 1 and the inertial measurement unit 2. The base profile 3 is adapted to the internal contour of the UAV and includes a base for mounting the microcontroller unit 1 and an extension for mounting the inertial measurement unit 2. Other sensors (such as barometers, thermometers, etc.) can be integrated on the microcontroller unit 1 or mounted on the base profile 3. This solution uses the base profile 3 for mounting the microcontroller unit 1 and the inertial measurement unit 2 in the module. The shape of the base profile 3 is set according to the internal shape of the UAV and is used to fit the inner wall of the UAV to reduce space occupation. The base profile 3 is also provided with mounting holes 302 for connecting with the UAV. For lightweight design, the base profile 3 can also be hollowed out and its shape simplified as needed.

[0022] The extension has a hollowed-out groove 303, and the inner edge of the hollowed-out groove 303 is bent outward to form a bent part 304. The inertial measurement unit 2 is suspended in the hollowed-out groove 303, and the upper part of the inertial measurement unit 2 is provided with a mounting part 201 for elastic connection with the bent part 304. In this solution, a shock-absorbing pad 4 is integrated on the base profile 3 to reduce the impact of motor vibration on the inertial measurement unit 2, and the space occupation is minimized by inverting the inertial measurement unit 2 into the hollowed-out groove.

[0023] The bending part 304 is inclined and has a vertical column 305 on its surface. A shock-absorbing pad 4 is fitted on the column 305. The column 305 passes through the mounting part 201 and has a nut 306 to press the mounting part 201. This solution, by setting a shock-absorbing pad 4 on the bending part 304 and setting the inertial measurement unit 2 on the column 305, can save space to install multiple inertial measurement units 2 while effectively reducing vibration.

[0024] The shock-absorbing pad 4 includes a first pad body 41 and a second pad body 42. The first pad body 41 is a cylinder with an inclined bottom surface and a vertical axis, and its bottom is in contact with the bent part 304. The second pad body 42 is coaxially arranged above the first pad body 41, and the mounting part 201 is sleeved on the outside of the second pad body 42. By setting the shock-absorbing pad 4 of this shape, this solution has shock-absorbing space in multiple directions, which is beneficial to absorbing motor vibration and further reducing space occupation.

[0025] The microcontroller unit 1 has an interface terminal 101 on its surface, and the base profile 3 has a wire groove 301 for accommodating the PSI5 communication cable on its surface. The wire groove 301 is also provided with a buckle 307. The dual-wire PSI5 communication cable can perform data communication while providing power, effectively reducing the amount of wire harness used and providing a basis for lightweight and low cost.

[0026] Detailed implementation: The flight attitude of the UAV is detected and coordinated by multiple inertial measurement units 2 and processed by microcontroller unit 1. When installing the inertial measurement units 2, they can be pre-installed with the base profile 3. Specifically, the shock-absorbing pad 4 is fitted into the column 305, and then the mounting part 201 is inverted onto the second pad 42, so that the length of the second pad 42 is greater than the length of the through hole on the mounting part 201. When the nut 306 is tightened, the second pad 42 can expand and squeeze tightly, so that the mounting part 201 can absorb vibration in multiple directions. Moreover, the overall shape and thickness occupy less space, so that multiple inertial measurement units 2 can be placed in a smaller space.

[0027] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A distributed detection sensor module for unmanned aerial vehicles (UAVs), characterized in that, It includes a microcontroller unit (1) and an inertial measurement unit (2), wherein there are at least two inertial measurement units (2) and they are respectively located in different areas of the UAV. The microcontroller unit (1) and the inertial measurement unit (2) are electrically connected through a two-wire PSI5 communication line.

2. The distributed detection sensor module for unmanned aerial vehicles according to claim 1, characterized in that, It also includes a base profile (3) for mounting the microcontroller unit (1) and the inertial measurement unit (2), wherein the base profile (3) is adapted to the internal contour of the UAV and includes a base for mounting the microcontroller unit (1) and an extension for mounting the inertial measurement unit (2).

3. The distributed detection sensor module for unmanned aerial vehicles according to claim 2, characterized in that, The extension is provided with a hollow groove (303), the inner edge of the hollow groove (303) is bent outward to form a bent part (304), the inertial measurement unit (2) is suspended in the hollow groove (303), and the upper part of the inertial measurement unit (2) is provided with a mounting part (201) for elastic connection with the bent part (304).

4. The distributed detection sensor module for unmanned aerial vehicles according to claim 3, characterized in that, The bent part (304) is inclined and has a vertical column (305) on its surface. A shock-absorbing pad (4) is sleeved on the column (305). The column (305) passes through the mounting part (201) and has a nut (306) on the column (305) to press the mounting part (201).

5. A distributed detection sensor module for unmanned aerial vehicles according to claim 4, characterized in that, The shock-absorbing pad (4) includes a first pad (41) and a second pad (42). The first pad (41) is a cylinder with an inclined bottom surface and a vertical axis. Its bottom is in contact with the bent part (304). The second pad (42) is coaxially arranged above the first pad (41). The mounting part (201) is sleeved on the outside of the second pad (42).

6. A distributed detection sensor module for unmanned aerial vehicles according to claim 2, characterized in that, The microcontroller unit (1) has an interface terminal (101) on its surface, and the base profile (3) has a groove (301) on its surface to accommodate the PSI5 communication line. The groove (301) also has a buckle (307).

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