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Method for determining calibration coefficient of flowmeter on unmanned aerial vehicle, calibration method and device

A technology for calibration coefficients and determination methods, applied in the field of drones, can solve problems such as time-consuming, cumbersome process, and inaccurate measurement data, and achieve the effect of convenient and simple calibration process, guaranteed effect, and guaranteed accuracy

Active Publication Date: 2020-01-21
TOPXGUN NAN JING ROBOTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using the Hall flowmeter for drones for plant protection operations, the spraying system of the drone (water pumps, nozzles, water pipes, and the resistance, length, and thickness of the water pipes) and the type of pesticide sprayed will affect the Hall effect. The sensitivity and accuracy of the Er flowmeter will be affected, resulting in inaccurate measurement data and affecting the effect of plant protection operations
The commonly used calibration method for this type of Hall flowmeter is to send it back to the laboratory for recalibration. Make timely and effective calibration for changes
Therefore, this calibration method is not suitable for calibrating the flowmeter on the drone

Method used

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  • Method for determining calibration coefficient of flowmeter on unmanned aerial vehicle, calibration method and device
  • Method for determining calibration coefficient of flowmeter on unmanned aerial vehicle, calibration method and device
  • Method for determining calibration coefficient of flowmeter on unmanned aerial vehicle, calibration method and device

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Effect test

Embodiment 1

[0034] figure 1 It is a flow chart of a method for determining the calibration coefficient of a flowmeter on a drone provided in Embodiment 1 of the present invention, which is applicable to calibrating a flowmeter on a drone. The device for determining the calibration coefficient of the flowmeter can be implemented by means of software and / or hardware, and can generally be integrated in the drone.

[0035] Such as figure 1 As shown, the method of this embodiment specifically includes:

[0036] S110. When the flight controller determines that the spraying of all the materials to be sprayed carried by the UAV is completed, acquire the cumulative measured flow rate fed back by the flow meter corresponding to the materials to be sprayed.

[0037] Among them, the drone refers to a plant protection drone, which is used to spray the substance to be sprayed during the plant protection operation. The substance to be sprayed can be the agent required for the plant protection operatio...

Embodiment 2

[0055] figure 2 It is a flow chart of a method for calibrating a flowmeter on a drone provided in Embodiment 2 of the present invention, which is applicable to calibrating a flowmeter on a drone. It is performed by a calibration device, which can be implemented in software and / or hardware, and generally can be integrated in the UAV.

[0056] Such as figure 2 As shown, the method of this embodiment specifically includes:

[0057] S210. The flight controller acquires the calibration coefficient of the flowmeter corresponding to when the UAV sprays the substance to be sprayed with the set medicament type, wherein the calibration coefficient of the flowmeter is provided by any embodiment of the present invention on the UAV. The method for determining the calibration coefficient of the flowmeter is determined.

[0058] The method of this embodiment can be used to calibrate the sprayed flow measured by the flowmeter when the UAV is in formal plant protection operation. Accordi...

Embodiment 3

[0069] image 3 It is a flow chart of a calibration method for a flowmeter on a UAV provided by Embodiment 3 of the present invention. This embodiment is embodied on the basis of the above-mentioned embodiment, taking the calibration of a Hall flowmeter on a plant protection UAV as an example Explain.

[0070] Among them, the relationship between the liquid flow measured by the Hall flowmeter and the frequency of the pulse signal is q=k 0 f, q is the flow rate, f is the pulse signal frequency, k 0 is the flow coefficient, which is a fixed value, and has been calibrated when the Hall flowmeter leaves the factory.

[0071] Such as image 3 As shown, the method of this embodiment specifically includes:

[0072] S310. When the flight controller determines in the spraying test that the spraying of the first medicament to be sprayed carried by the UAV is completed, the accumulative measured flow rate fed back by the Hall flowmeter is acquired.

[0073] S320. The flight controll...

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Abstract

The embodiment of the invention discloses a method for determining a calibration coefficient of a flowmeter on an unmanned aerial vehicle, a calibration method and a device. The method for determining the calibration coefficient includes: when the flight controller determines that all the materials to be sprayed carried by the UAV are sprayed, obtaining the cumulative measured flow rate fed back by the flow meter corresponding to the materials to be sprayed; Quantity and cumulative measurement flow, determine the calibration coefficient of the flowmeter. The flight controller can calibrate the cumulative measurement flow fed back by the flowmeter in real time according to the calibration coefficient of the flowmeter during the official plant protection operation of the UAV to obtain the actual spraying flow after calibration, thereby realizing the control of the flowmeter on the UAV. calibration. The above technical solution solves the problem that the flow meter is difficult to calibrate during UAV plant protection operations. The calibration process is convenient and simple, which ensures the accuracy of the spray flow data obtained by the flight controller and also ensures the effect of UAV plant protection operations.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of unmanned aerial vehicles, and in particular to a method for determining a calibration coefficient of a flowmeter on an unmanned aerial vehicle, a calibration method and a device. Background technique [0002] With the rapid development of the drone industry, the application of drones is becoming more and more extensive. The use of drones to spray pesticides can not only save manpower and material resources, but also can be remotely controlled to avoid the danger of spraying workers being exposed to pesticides. It not only improves the safety of plant protection operations, but also improves the efficiency of pesticide spraying. [0003] When the UAV performs plant protection operations, it is necessary to install a liquid flow meter at the liquid inlet or outlet of the water pump to monitor the amount of pesticide spraying, usually using a Hall flow meter. Hall flowmeter uses the Ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F25/00
CPCG01F25/10
Inventor 张羽王飞尹亮亮
Owner TOPXGUN NAN JING ROBOTICS CO LTD
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