Airport grassland runway flatness testing device based on acceleration sensor

Abstract

The utility model discloses an airport grassland runway flatness testing device based on an acceleration sensor. The airport grassland runway flatness testing device comprises a vehicle body, an integration module and a testing module, wherein the integration module comprises a processor and a control panel; the testing module comprises the acceleration sensor, a demodulator and positioning equipment; the acceleration sensor and the demodulator are used in a combined mode, the vertical vibration acceleration of a certain point position in the running process of the testing device is obtained, the processor obtains the vertical displacement of the point position through data processing and calculation, then the runway vertical section elevation can be obtained, BBI is obtained through calculation according to an existing BBI calculation method, and the BBI is output to the control panel. The method can be used for evaluating the flatness of the grassland runway on site and guiding laying and maintenance of the airport grassland runway by using real-time data.

Description

Technical Field

[0001] This utility model relates to the field of airport runway testing, specifically to an airport grass runway flatness testing device based on an acceleration sensor. Background Technology

[0002] Airport grass runways are rapidly constructed runways used in general aviation, emergency rescue, and other scenarios. In recent years, with the development of the low-altitude economy, grass runways have received considerable attention, and their usage characteristics and application scenarios have been given significant consideration. Researchers have used various methods to reinforce airport grass runways, enhancing their load-bearing capacity and better maintaining their smoothness to ensure runway safety and comfort. Among these methods, testing the runway's smoothness is one of the crucial tasks during runway construction and operation.

[0003] Currently, the Boeing Bump Index (BBI) is increasingly widely used in runway smoothness evaluation. The BBI, developed by the FAA based on Boeing's 1991 Boeing Bump method, is most commonly tested using a laser profilometer. However, the laser profilometer calculates the BBI based on the vertical distance of the laser test section, and it is only applicable to unobstructed runway surfaces. It cannot avoid the influence of grass on the laser test on grass runways, and therefore cannot be applied to the testing and evaluation of grass runway smoothness based on the BBI.

[0004] Therefore, a device is needed to test the flatness of airport grass runways in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to disclose an airport grass runway smoothness testing device based on an acceleration sensor, which can be adapted to the characteristics of airport grass runways, test and output test indicators in real time, evaluate the smoothness of grass runways on-site, and guide the laying and maintenance of airport grass runways.

[0006] This utility model discloses an airport grass runway smoothness testing device based on an acceleration sensor, comprising a vehicle body, an integrated module, and a testing module, wherein:

[0007] The vehicle body consists of a body, wheels, a motor, and a battery. The wheels are connected to the vehicle body via axles, and the motor is connected to the battery. The motor is also connected to the wheels via axles, providing power for the device to move.

[0008] The integrated module consists of a processor, a control panel, and a signal transceiver. The control panel is mounted on the vehicle body and connected to the processor. The processor is connected to the motor and the battery to control the start and stop of the motor and the power supply or disconnection of the battery. The signal transceiver is connected to the processor and the battery to transmit received signals to the processor or transmit signals output by the processor.

[0009] The test module consists of an accelerometer, a demodulator, and a positioning device. The accelerometer, demodulator, and positioning device are connected to the processor, transmit data to the processor, and are connected to the battery through the processor.

[0010] The flatness testing device also includes a remote control device, which consists of a housing, a circuit board, a display screen, a signal transmitter, buttons, and a battery. The battery is connected to and powers the circuit board and the signal transmitter. The display screen is mounted on the housing and connected to the circuit board. The circuit board has a button module, and the buttons are mounted on the housing.

[0011] Preferably, the button corresponds to the button module on the circuit board.

[0012] In order to detect obstacles that may be encountered during travel, the flatness testing device also includes obstacle sensors, which are set around the vehicle body. The obstacle sensors are connected to the signal transceiver via wireless transmission.

[0013] The control panel is tilted at the connection point on both sides of the vehicle body, which facilitates operation by workers, saves working time, and ensures the speed of construction and maintenance of the airport grass runway.

[0014] Furthermore, in order to simulate the nose structure of an aircraft and make the resistance encountered by the device when moving forward similar to that of an aircraft, the side of the vehicle body surface corresponding to the control panel is a streamlined front.

[0015] The airport grass runway flatness testing device described in this utility model can eliminate the interference of grass, effectively test and calculate the BBI, and display it on the control panel in real time.

[0016] This device can output a direct indicator—BBI. By combining the accelerometer and demodulator inside the device, the acceleration of the device during operation is obtained and the data is transmitted to the processor. The processor directly processes the data, freeing operators from the process of repeated testing and data processing. The number of tests, distance and other conditions can be adjusted at any time according to the site conditions.

[0017] This device can effectively ensure the safety of operators, does not require real-time driving, and can be operated remotely using remote control equipment. Its movement speed is controllable and stable, and it can obtain accurate experimental data, thereby obtaining reliable flatness parameters. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of an airport grass runway smoothness testing device based on an acceleration sensor.

[0019] Figure 2 This is a schematic diagram of the internal structure of an airport grass runway smoothness testing device based on an acceleration sensor.

[0020] Figure 3 This is a schematic diagram of the external structure of the remote control device.

[0021] Figure 4 This is a schematic diagram of the internal structure of a remote control device.

[0022] Among them, 1-body, 2-wheel, 3-control panel, 4-signal transceiver, 5-obstacle sensor, 6-motor, 7-battery, 8-accelerometer, 9-demodulator, 10-positioning device, 11-processor, 12-casing, 13-circuit board, 14-signal transmitter, 15-button, 16-battery, 17-display screen. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "setting", "transmitting", and "connecting" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1-4 The airport grass runway smoothness testing device based on accelerometer sensor 8 shown includes a vehicle body, an integrated module, a testing module, a remote control device, and an obstacle sensor 5. The vehicle body consists of a body 1, wheels 2, a motor 6, and a battery 7. The testing module consists of an accelerometer sensor 8, a demodulator 9, and a positioning device 10. The integrated module consists of a processor 11, a control panel 3, and a signal transceiver 4. The remote control device consists of a housing 12, a circuit board 13, a display screen 17, a signal transmitter 14, buttons 15, and a battery 16.

[0026] Wheel 2 is connected to the vehicle body via an axle, and motor 6 is connected to battery 7 and also to wheel 2 via an axle, providing power for the device's movement. Figure 1As shown, obstacle sensors 5 are installed around the vehicle body to detect obstacles that may be encountered during travel. The obstacle sensors 5 used in this embodiment have internal batteries and can be used wirelessly. They connect to the signal transceiver 4 via wireless signals, and the signal transmission can be achieved through common methods such as real-time network transmission or Bluetooth signal transmission. The control panel 3 is tilted and installed at the connection points on both sides of the vehicle body and is connected to the processor 11. The processor 11 is connected to the motor 6 and the battery 7, and the signal transceiver 4 is connected to the processor 11 and the battery 7, transmitting received signals to the processor 11 or transmitting signals output by the processor 11.

[0027] like Figure 2 As shown, the accelerometer 8, demodulator 9, and positioning device 10 are connected to the processor 11, transmitting data to the processor 11 and being connected to the battery 7 via the processor 11. Furthermore, as... Figure 2 As shown, to simulate the nose structure of an aircraft and make the resistance encountered by the device during forward movement similar to that of an aircraft, the side of the vehicle body surface corresponding to the control panel 3 is a streamlined front. For example... Figure 3-4 As shown, the battery 16 is connected to and powers the circuit board 13 and the signal transmitter 14. The display screen 17 is mounted on the housing 12 and connected to the circuit board 13. The circuit board 13 is equipped with a button module, and the buttons 15 are mounted on the housing 12. The buttons 15 correspond one-to-one with the button modules on the circuit board 13.

[0028] When the airport grass runway evenness testing device is in operation, it is placed at the starting position of the runway to be tested, and the remote control device is activated. The testing device travels in a straight line along the runway. The acceleration sensor 8 and demodulator 9 work together to measure the vertical vibration acceleration and transmit the signal to the processor 11. The processor 11 calculates the vertical displacement and obtains the longitudinal profile elevation through data filtering and double integration.

[0029] The processor 11 calculates the BBI of each point along the route using the BBI calculation method proposed by the FAA, based on the longitudinal profile elevation of each point. After completing the entire course, the processor 11 outputs the test results to the control panel 3. The output results can be a BBI data table or a line graph showing the runway alignment and relative elevation. In conjunction with the positioning device 10, the specific locations of unevenness on the grass runway can be determined, allowing for targeted maintenance or repaving.

[0030] If the battery 7 has low power or other special circumstances occur, the operator can determine that the results of this round are not acceptable based on the abnormal test results, and make a decision to retest the original route. This avoids the occurrence of test extensions or data distortion due to the inability to understand the test results in real time.

[0031] When a person, animal, or vehicle suddenly enters the test area and approaches the device, the signal transmitting component inside the obstacle sensor 5 transmits a signal to the signal receiver 4. The signal receiver 4 then transmits the signal to the processor 11, which issues an emergency braking command, causing the motor to stop working and the test device to stop moving.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An airport grass runway flatness testing device based on an acceleration sensor, comprising a vehicle body, an integrated module, and a testing module, characterized in that: The vehicle body consists of a body, wheels, a motor, and a battery. The wheels are connected to the vehicle body via axles, and the motor is connected to the battery. The motor is also connected to the wheels via axles. The integrated module consists of a processor, a control panel, and a signal transceiver. The control panel is mounted on the vehicle body and connected to the processor. The processor is connected to the motor and the battery. The signal transceiver is connected to the processor and the battery. The test module consists of an accelerometer, a demodulator, and a positioning device. The accelerometer, demodulator, and positioning device are connected to the processor, transmit data to the processor, and are connected to the battery through the processor.

2. The airport grass runway smoothness testing device based on an acceleration sensor according to claim 1, characterized in that: It also includes a remote control device, which consists of a housing, a circuit board, a display screen, a signal transmitter, buttons, and a battery. The battery is connected to and powers the circuit board and the signal transmitter. The display screen is mounted on the housing and connected to the circuit board. The circuit board has a button module, and the buttons are mounted on the housing.

3. The airport grass runway smoothness testing device based on an acceleration sensor according to claim 2, characterized in that: The button corresponds to the button module on the circuit board.

4. The airport grass runway smoothness testing device based on an acceleration sensor according to claim 1, characterized in that... It also includes obstacle sensors, which are installed around the vehicle.

5. The airport grass runway smoothness testing device based on an acceleration sensor according to claim 1, characterized in that... The control panel is tilted and positioned at the junction of the two sides of the vehicle body.

6. The airport grass runway smoothness testing device based on an acceleration sensor according to claim 5, characterized in that... The side of the vehicle body surface corresponding to the control panel has a streamlined front end.

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