Testing device box for throttle valve sensor of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle throttle valve sensor testing device box, comprising a box body provided with a testing port and a signal interface, the testing port and the unmanned aerial vehicle throttle valve sensor are matched in shape, and the testing port and the unmanned aerial vehicle throttle valve sensor are in interference fit; a throttle valve assembly and a stepping motor are arranged in the box body, and the throttle valve assembly is connected with the stepping motor through a stepping motor driver; the throttle valve sensor detects the opening degree of a throttle valve plate of the throttle valve assembly through the sliding contact. A throttle valve sensor is fixed on a throttle valve testing device, a driving motor is controlled to rotate through an RS485 interface, the opening degree of a throttle valve plate is adjusted, and then the position of a sliding contact of the throttle valve sensor is changed; when + 5V voltage is added, the + 5V voltage is converted into voltage which changes correspondingly with the resistance value to be output, and whether the throttle valve sensor works normally or not is judged by collecting the changed voltage value and comparing the changed voltage value; the device is convenient and fast in detection, and can be used for calibrating and detecting the throttle valve sensor of the unmanned aerial vehicle.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) testing technology and relates to a UAV throttle sensor testing device box. Background Technology

[0002] The operation of a drone's throttle is primarily based on the control of the engine's airflow. The throttle adjusts the opening of the intake passage to change the airflow entering the engine, thereby controlling the engine's output power. When the drone needs to accelerate or climb, the throttle opens wider, increasing the intake air volume and boosting engine power; when the drone needs to decelerate or descend, the throttle closes narrower, reducing the intake air volume and decreasing engine power.

[0003] The throttle sensor of a drone engine is a core component controlling the engine's intake air volume and power output; its accuracy and reliability directly affect flight performance and fuel efficiency. High-precision sensors can monitor engine speed, power, and other statuses in real time and convert this information into throttle signals. These sensors need to possess high precision, high stability, and high reliability to ensure the drone can fly accurately and stably.

[0004] Therefore, it is necessary to test the throttle sensor of the drone engine, calibrate the throttle sensor based on the test results, and determine whether the throttle sensor is functioning properly. This is also a key point in the maintenance of the throttle sensor of the drone engine. Summary of the Invention

[0005] The technical problem solved by this utility model is to provide a test device box for drone throttle sensor, which can be used for the calibration and testing of drone throttle sensor.

[0006] This utility model is achieved through the following technical solution:

[0007] A test device box for a drone throttle sensor includes a box with a test port and a signal interface. The test port is adapted to the shape of the drone throttle sensor, and the two are interference-fitted.

[0008] The housing contains a throttle body assembly and a stepper motor. The throttle body assembly is connected to the stepper motor via a stepper motor driver. The throttle sensor detects the opening degree of the throttle valve plate of the throttle body assembly via a sliding contact.

[0009] The throttle assembly controls the rotation of a stepper motor, and uses the transmission device of the throttle assembly to affect the opening of the throttle valve plate, thereby changing the position of the sliding contact of the throttle sensor.

[0010] Furthermore, during testing, the throttle sensor is installed on the drone throttle sensor test device box. The sensor tester controls the throttle assembly to open and close via the signal interface to control the basic fuel injection quantity; the sensor tester reads the voltage information fed back by the throttle sensor.

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

[0012] When calibrating a throttle sensor, it is necessary to accurately measure the output voltage value of the throttle sensor, and then determine whether the throttle sensor is functioning properly based on the voltage value. The UAV throttle sensor testing device box provided by this invention is a clamping fixture that can be used to measure the throttle sensor, thereby calibrating the throttle sensor.

[0013] The throttle sensor is fixed to a throttle testing device. The drive motor is controlled via an RS485 interface to rotate, adjusting the opening of the throttle valve plate and thus changing the position of the sliding contact of the throttle sensor. When a +5V voltage is applied, it is converted into a voltage output that changes accordingly with the resistance value. By collecting and comparing the changing voltage values, the throttle sensor's functionality is determined. This invention offers convenient and quick testing and can be used for the calibration and testing of throttle sensors in unmanned aerial vehicles (UAVs). Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Among them, 1 is the throttle body assembly, 2 is the throttle body sensor, 3 is the signal interface, and 4 is the handle. 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 A test device box (clamping fixture) for a drone throttle sensor includes a housing with a test port and a signal interface. The test port is shaped to fit the drone throttle sensor with an interference fit. The housing contains a throttle assembly and a stepper motor. The throttle assembly is connected to the stepper motor via a stepper motor driver. The throttle sensor detects the opening degree of the throttle valve plate of the throttle assembly via a sliding contact. The throttle assembly controls the stepper motor to rotate, thereby affecting the opening degree of the throttle valve plate through its transmission mechanism, and thus changing the position of the sliding contact of the throttle sensor.

[0018] During testing, calibration, or adjustment, the throttle sensor is powered by the testing instrument.

[0019] The throttle position sensor is installed on the drone throttle position sensor test kit. The sensor detector controls the throttle assembly to open and close via a signal interface (RS485 interface) to control the basic fuel injection quantity. The sensor detector reads the voltage information fed back by the throttle position sensor, and then compares and analyzes it to determine whether it is working properly. The throttle position sensor works based on a sliding rheostat. When the accelerator is pressed, the idle speed signal line is disconnected, and the sliding rheostat rotates simultaneously. The voltage value at this time is detected, and the obtained data is compared and analyzed to control the basic fuel injection quantity.

[0020] Specific implementation examples are given below.

[0021] A stepper motor drive and control integrated board based on the MODBUS RS485 bus interface was selected. Specific technical specifications are as follows:

[0022] Power supply voltage: DC12~45V;

[0023] Output current: 0.5~5A;

[0024] Step pulse: 25~200000PPS;

[0025] Built-in motor trapezoidal acceleration and deceleration algorithm control ensures smooth operation;

[0026] The RS485 device address ID and communication baud rate can be set;

[0027] The motor can be set to accelerate, maintain constant speed, or keep the motor current constant.

[0028] Start, stop, maximum running speed, and acceleration / deceleration time can be set;

[0029] Software start and end limit protection and hardware start limit can be set;

[0030] It supports overheat, overcurrent, and undervoltage protection;

[0031] Operating temperature: -20~85℃;

[0032] The throttle sensor is fixed on the throttle test device. The drive motor is controlled to rotate via the RS485 interface to adjust the opening of the throttle valve plate, thereby changing the position of the sliding contact of the throttle sensor. When a +5V voltage is applied, it is converted into a voltage output that changes accordingly with the resistance value. By collecting the changing voltage value, the throttle sensor is compared to determine whether it is working properly.

[0033] 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. A drone throttle sensor testing device case, characterized in that, The box is provided with a test port and a signal interface, the test port is matched with the shape of the throttle sensor of the unmanned aerial vehicle, and the two are in interference fit; The box is provided with a throttle assembly and a stepping motor, the throttle assembly is connected with the stepping motor through a stepping motor driver, and the throttle sensor detects the opening degree of a throttle valve plate of the throttle assembly through a sliding contact.

2. The UAV throttle sensor test device case of claim 1, wherein, The throttle assembly drives the stepping motor to rotate, the transmission device of the throttle assembly affects the opening degree of the throttle valve plate, and then the position of the sliding contact of the throttle sensor is changed.

3. The UAV throttle sensor test device box of claim 1, wherein, During detection, the throttle sensor is installed on the unmanned aerial vehicle throttle sensor testing device box, the sensor detector controls the opening and closing of the throttle assembly through the signal interface to control the basic fuel injection amount, and the sensor detector reads the voltage information fed back by the throttle sensor.

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