Unmanned aerial vehicle fuel quantity sensor testing device

Abstract

The utility model discloses an unmanned aerial vehicle fuel quantity sensor testing device which comprises a base, a linear motion sliding table is arranged on the base, a fuel quantity sensor fixing seat is arranged beside the linear motion sliding table, and the fuel quantity sensor fixing seat is matched with the head of a fuel quantity sensor. The linear motion sliding table comprises a bottom plate provided with a graduated scale and fixing heads arranged at the two ends of the bottom plate, a rail is erected between the fixing heads at the two ends, and a sliding block driven by a motor is arranged on the rail in a sleeving mode. A slider clamping tool is arranged on the slider and comprises a hinge block connected with the slider through a hinge structure; a rectangular hole is formed in the hinge block; and a visual pointer is also arranged on the hinge block. According to the utility model, the head and the floater ball of the oil quantity sensor are respectively clamped by the oil quantity sensor fixing seat and the slider clamping tool, the floater ball of the oil quantity sensor is driven to move by the linear motion sliding table, and the motion position is fed back in real time to simulate the oil quantity value; and meanwhile, a visual method is combined to assist in position checking.

Description

Technical Field

[0001] This utility model belongs to the field of drone testing technology and relates to a drone fuel level sensor testing device. Background Technology

[0002] In recent years, with the rapid development of drone technology, drones have been widely used in information acquisition, high-altitude operations, and other fields. Currently, drones are mainly divided into two categories based on their power source: electric drones, including those powered by batteries and those powered by solar energy, do not require an engine and are driven solely by an electric motor. These drones are environmentally friendly and easy to maintain, but have poor endurance and wind resistance. The other category is gasoline-powered drones, which require an engine for cruising power, including gasoline engines and heavy oil engines. These drones have the characteristics of long endurance and strong wind resistance.

[0003] Most fuel-powered long-range drones are equipped with fuel level sensors. Moreover, when drones perform maneuvers such as attitude changes, acceleration, and deceleration during flight, the fuel level will change drastically and slosh around. Traditional fuel level measurement devices have relatively large errors, so the calibration and testing of the drone's fuel level sensor is very important. Summary of the Invention

[0004] The technical problem solved by this utility model is to provide a test device for a fuel level sensor of a drone, which can drive the fuel level sensor to move and provide feedback on the position of the fuel level sensor to simulate the fuel level value, and can be used to calibrate the fuel level sensor.

[0005] This utility model is achieved through the following technical solution:

[0006] A test device for a fuel level sensor for a drone includes a base, a linear motion slide on the base, a fuel level sensor mounting base on the side of the linear motion slide, and the fuel level sensor mounting base being adapted to the head of the fuel level sensor.

[0007] The linear motion slide includes a base plate with a scale, and fixed heads at both ends of the base plate. A track is installed between the fixed heads at both ends, and a slider driven by a motor is mounted on the track.

[0008] The slider is equipped with a slider clamping fixture, which includes a hinge block connected to the slider via a hinge structure; the hinge block has a rectangular hole; and the hinge block is also equipped with a visual pointer.

[0009] Furthermore, the oil level sensor is installed after the oil level sensor mounting base, with its tail parallel to the linear motion slide; the float ball is held in the rectangular hole.

[0010] The visual pointer is vertically positioned on the side of the hinge block.

[0011] Compared with the prior art, the present invention has the following beneficial technical effects:

[0012] The UAV fuel level sensor testing device provided by this utility model can be used as a fixture to perform room temperature performance testing on the fuel level sensor: the head and float ball of the fuel level sensor are clamped by the fuel level sensor fixing base and the slide clamping fixture respectively, and the float ball of the fuel level sensor is driven to move by the linear motion slide table, and the movement position is fed back in real time to simulate the fuel level value; at the same time, the position is checked by visual method, the test results are reliable, and it is simple and practical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a partially enlarged view of the present invention;

[0015] Among them, 1 is the base, 2 is the visual pointer, 3 is the oil level sensor, 4 is the slider clamping fixture, 5 is the linear motion slide, 6 is the hinge block, 7 is the rectangular hole, 8 is the float ball, and 9 is the slider. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These descriptions are intended to explain the present invention and not to limit it.

[0017] See Figure 1 , Figure 2 A test device for a fuel level sensor for a drone includes a base, a linear motion slide on the base, a fuel level sensor mounting base on the side of the linear motion slide, and the fuel level sensor mounting base being adapted to the head of the fuel level sensor.

[0018] The linear motion slide includes a base plate with a scale, and fixed heads at both ends of the base plate. A track is installed between the fixed heads at both ends, and a slider driven by a motor is mounted on the track.

[0019] The slider is equipped with a slider clamping fixture, which includes a hinge block connected to the slider via a hinge structure; the hinge block has a rectangular hole; and the hinge block is also equipped with a visual pointer.

[0020] Specifically, the visual pointer is vertically positioned on the side of the hinge block.

[0021] The following is a detailed explanation of each part.

[0022] The oil quantity sensor testing device (clamp) provided by this utility model includes a base 1, a linear motion slide 5 on the base 1, an oil quantity sensor fixing seat on the side of the linear motion slide 5, and the oil quantity sensor fixing seat is adapted to the head of the oil quantity sensor; the oil quantity sensor is installed after the oil quantity sensor fixing seat, and its tail is parallel to the linear motion slide 5.

[0023] The linear motion slide 5 includes a base plate and fixed heads at both ends of the base plate. A track is installed between the fixed heads at both ends, and a slider 9 driven by a motor is mounted on the track.

[0024] The slider 9 is equipped with a slider clamping fixture to accurately and quickly measure the results detected by the oil quantity sensor in order to calibrate the oil quantity sensor. When calibrating the oil quantity sensor, it is necessary to accurately measure the distance moved by the float, and then determine the amount of oil corresponding to each unit distance moved by the float based on the oil quantity change table. For this purpose, a slider clamping fixture is constructed on the moving slider.

[0025] The slider clamping fixture includes a hinge block, which is connected to the slider 9 via a hinge structure. A rectangular hole is opened on the hinge block. When measuring, the hinge is lowered, and the rectangular hole 7 hangs on the outer circle of the float ball 8 of the oil level sensor by utilizing the weight of the hinge. This allows the slider to drive the float ball to move left and right through the slider clamping fixture.

[0026] The hinge block is also equipped with a visual pointer, and a scale is laser-engraved on the base plate, with a scale every 1 mm and a number marked every 10 mm, such as: 0, 10, 20………….600. When the float moves, the visual pointer on the hinge block points to the corresponding scale value, and the distance moved can also be quickly read by visual means.

[0027] During testing, the oil level sensor (oil float) is installed onto the oil level sensor mounting base of the oil level sensor testing fixture, and the float ball of the oil level sensor is fixed in the rectangular hole.

[0028] The tester supplies +28V power to the oil level sensor; it connects to the motor of the oil level sensor test fixture via one RS422 interface of the tester, sends motion control commands to the motor, and drives the float ball through the slider to move it according to the set distance. The tester also receives the speed information fed back by the motor, and obtains the position information of the slider and float ball based on the speed and running time; at the same time, it combines visual methods to assist in position verification.

[0029] The following is a specific example:

[0030] The total length of the oil level sensor test fixture is 338mm, and the oil level sensor has a 51mm dead zone.

[0031] Output 0-5V, error 30mV, used to output oil quantity value;

[0032] Fuel level sensor power supply voltage: +28V;

[0033] Communication interface: RS422 serial port.

[0034] To minimize the overall size within the effective stroke range, an integrated linear motor slide is selected to achieve linear displacement. For the same stroke, due to the indirect drive between the mover and stator of the linear motor, and the influence of the intermediate coupling and motor length compared to a lead screw module slide, the overall length of a linear motor slide is generally 150mm to 200mm smaller than that of a lead screw module slide.

[0035] The embodiments given above are preferred examples of implementing this utility model, and this utility model is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the technical solution of this utility model shall fall within the protection scope of this utility model.

Claims

1. An unmanned aerial vehicle fuel level sensor testing device, comprising: The base is provided with a linear motion slide, and the linear motion slide is provided with an oil level sensor fixing seat on the side thereof, which is matched with the head of the oil level sensor; The linear motion slide comprises a base plate provided with a scale and fixing heads arranged at two ends of the base plate, and a track frame arranged between the fixing heads, and a sliding block driven by a motor is sleeved on the track; The sliding block is provided with a sliding clamp tool, which comprises a hinge block connected with the sliding block through a hinge structure, a rectangular hole is formed in the hinge block, and a visual pointer is arranged on the hinge block.

2. The UAV oil level sensor testing device of claim 1, wherein, The oil level sensor is installed on the oil level sensor fixing seat, and the tail thereof is parallel to the linear motion slide; and a float ball is clamped in the rectangular hole.

3. The UAV oil level sensor testing device of claim 1, wherein, The visual pointer is vertically arranged on the side of the hinge block.

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