CN-121977973-A - Pesticide dust drift measuring device and method, electronic equipment and storage medium

CN121977973ACN 121977973 ACN121977973 ACN 121977973ACN-121977973-A

Abstract

The invention provides a pesticide dust drift measuring device, a method, electronic equipment and a storage medium, which belong to the technical field of pesticide detection and comprise a dust migration channel, a sensing module, a wind speed measuring module and a signal processing module, wherein the dust migration channel receives dust to be measured, the sensing module is connected with the dust migration channel to acquire an impact signal of the dust to be measured and send the impact signal to the signal processing module, the wind speed measuring module sends measured wind speed data to the signal processing module, and the signal processing module obtains a dust drift measuring result based on the impact signal and the wind speed data. According to the invention, the sensing module is used for collecting the physical impact signals and directly calculating the dust drift amount by combining the wind speed data, so that complex sample collection and chemical analysis processes can be avoided, the problems of complex operation, long measurement period and high labor cost are solved, and the intelligent and rapid detection of the pesticide dust drift is realized.

Inventors

LI LONGLONG
ZHANG RUIRUI
Yi tongchuan
DING CHENCHEN

Assignees

北京市农林科学院智能装备技术研究中心

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (14)

1. The pesticide dust drift measuring device is characterized by comprising a dust migration channel, a sensing module, a wind speed measuring module and a signal processing module; the dust migration channel receives dust to be measured; the sensing module is connected with the dust migration channel to acquire an impact signal of the dust to be measured and send the impact signal to the signal processing module; The wind speed measuring module sends the measured wind speed data to the signal processing module; the signal processing module obtains a dust drift measurement result based on the impact signal and the wind speed data.
2. The pesticide dust drift measurement device of claim 1, wherein the signal processing module obtains a dust drift measurement based on the impact signal and the wind speed data, comprising: Acquiring all wave crests of the impact signal; Accumulating and summing stress values corresponding to each wave crest in a preset time unit to obtain the impact force of dust particles; Inputting the impact force of the dust particles and the wind speed data into a dust measurement model, and obtaining the dust drift measurement result output by the dust measurement model; the dust measurement model characterizes a functional relationship between the dust particle impact force and the dust particle mass and the wind speed data.
3. The pesticide dust drift measurement device of claim 2, wherein the dust measurement model is determined based on the steps of: acquiring the density of dust particles; Acquiring the contact time of the dust particles and a probe of the sensing module; acquiring the impact speed of the dust particles; Acquiring the elastic coefficients of the dust particles and the probe and the maximum compression amount when the dust particles impact the probe; The dust measurement model is constructed based on the density of the dust particles, the contact time, the impact speed, the elastic coefficient, the maximum compression amount and the mass of the dust particles, wherein the dust measurement model takes the mass of the dust particles as an independent variable.
4. A pesticide dust drift measurement device as set forth in claim 3, wherein the mathematical expression of the dust measurement model is: ; Wherein F (t) is the impact force of the dust particles, m is the mass of the dust particles, K is the elasticity coefficient of the dust particles and the probe for the density of the dust particles, For the maximum amount of compression of the dust particles as they strike the probe, Is wind speed data, i.e. the impact speed of the dust particles, t is the contact time, and 。
5. A pesticide dust drift measuring device according to claim 3, in which the elastic coefficients of the dust particles and the probe are calculated by means of the following mathematical model: ; Wherein K is the elastic coefficient of the dust particles and the probe, For the poisson's ratio of the dust particles, For the young's modulus of the dust particles, For the poisson's ratio of the probe, Is the Young's modulus of the probe.
6. The pesticide dust drift measurement device of claim 5, wherein the maximum amount of compression of the dust particles as they strike the probe is calculated by the following mathematical model: ; Wherein, the For the maximum compression of the dust particles when they strike the probe, m is the mass of the dust particles, And the wind speed data is the impact speed of the dust particles, r is the radius of the dust particles, and K is the elastic coefficient of the dust particles and the probe.
7. The pesticide dust drift measurement device of claim 1, wherein the sensing module includes a probe, a waveguide, and a torque sensor; the moment sensor is arranged outside the dust migration channel; the probe is vertically arranged in the dust migration channel and is connected with the moment sensor through the waveguide rod; The probe acquires the impact signal so as to transmit the impact signal to the moment sensor through the waveguide rod, and the moment sensor sends the impact signal to the signal processing module.
8. The pesticide dust drift measuring device of claim 7, wherein the probe is a prismatic structure with a cross section of an isosceles right triangle; The dust receiving surface of the probe is opposite to the direction of the dust to be measured entering the dust moving channel.
9. The pesticide dust drift measuring device of claim 1, further comprising a wind direction adjustment module comprising a rotation shaft, a wind vane, and a tail; The dust migration channel is rotatably arranged on the base through the rotating shaft; the tail fin is connected to one side of an air outlet of the dust migration channel through the vane rod, and the tail fin drives the dust migration channel to rotate around the rotating shaft, so that an air inlet of the dust migration channel is right opposite to the ambient wind direction.
10. The pesticide dust drift measuring device of claim 1, wherein a pipe wall at an air inlet edge of the dust migration channel is in a blade wedge shape, and a thickness of the pipe wall is gradually thinned toward the air inlet.
11. A method for measuring drift of pesticide dust, comprising: The method comprises the steps of obtaining an impact signal of dust to be measured by using a sensing module, and sending the impact signal to a signal processing module; Acquiring wind speed data by using a wind speed measurement module, and sending the wind speed data to the signal processing module; And calculating to obtain a dust drift measurement result based on the impact signal and the wind speed data by using the signal processing module.
12. An electronic device comprising a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the processor implements the pesticide dust drift measurement method of claim 11 when executing the computer program.
13. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the pesticide dust drift measurement method of claim 11.
14. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the pesticide dust drift measurement method according to claim 11.

Description

Pesticide dust drift measuring device and method, electronic equipment and storage medium Technical Field The invention relates to the technical field of pesticide detection, in particular to a pesticide dust drift measuring device, a method, electronic equipment and a storage medium. Background Plant protection unmanned aerial vehicle has become the important agricultural implement of crop pest control, and wherein granule powder pesticide is the important direction that plant protection unmanned aerial vehicle used. Different from the ground application mode, the plant protection unmanned aerial vehicle can produce strong washing air current down in the application process, under the combined action of environmental wind and washing air current down, fine pesticide dust granule can drift down wind direction, causes water pollution, air pollution, threatens personal health. Therefore, pesticide dust drift detection is an important link in assessing the safety of application and environmental risk. At present, the pesticide dust drift detection mainly adopts the following modes that firstly, the content of pesticide components in the drift is directly measured by adopting a gas chromatography, secondly, a tracer is added into the powder pesticide, and the content of the tracer is measured by utilizing a fluorescence analyzer or an ultraviolet-visible spectrophotometer, so that the drift condition of the powder pesticide is analyzed. In the methods, a pesticide dust collecting device is usually arranged in the downwind direction, collected dust pesticides are eluted and filtered, and further the collected dust pesticides are subjected to sample injection detection in an instrument. However, the above measurement methods all require complicated measurement procedures, and have the problems of complicated operation, time and labor consumption, long measurement period, and the like. For aviation pesticide application detection in large spraying width and large operation area, collected samples usually need a long time to be processed, so that the labor intensity is high, and the time and consumable cost are high. Disclosure of Invention The invention provides a pesticide dust drift measuring device, a method, electronic equipment and a storage medium, which are used for solving the defects of complicated measuring flow, complex operation, long measuring period, high labor intensity, high time and consumable cost and the like in pesticide dust drift detection in the prior art and realizing intelligent and rapid detection of pesticide dust drift. The invention provides a pesticide dust drift measuring device which comprises a dust migration channel, a sensing module, a wind speed measuring module and a signal processing module, wherein the sensing module is connected with the dust migration channel; the dust migration channel receives dust to be measured; the sensing module is connected with the dust migration channel to acquire an impact signal of the dust to be measured and send the impact signal to the signal processing module; The wind speed measuring module sends the measured wind speed data to the signal processing module; the signal processing module obtains a dust drift measurement result based on the impact signal and the wind speed data. According to the pesticide dust drift measuring device provided by the invention, the signal processing module obtains a dust drift measuring result based on the impact signal and the wind speed data, and the device comprises the following components: Acquiring all wave crests of the impact signal; Accumulating and summing stress values corresponding to each wave crest in a preset time unit to obtain the impact force of dust particles; Inputting the impact force of the dust particles and the wind speed data into a dust measurement model, and obtaining the dust drift measurement result output by the dust measurement model; the dust measurement model characterizes a functional relationship between the dust particle impact force and the dust particle mass and the wind speed data. According to the pesticide dust drift measuring device provided by the invention, the dust measuring model is determined based on the following steps: acquiring the density of dust particles; Acquiring the contact time of the dust particles and a probe of the sensing module; acquiring the impact speed of the dust particles; Acquiring the elastic coefficients of the dust particles and the probe and the maximum compression amount when the dust particles impact the probe; The dust measurement model is constructed based on the density of the dust particles, the contact time, the impact speed, the elastic coefficient, the maximum compression amount and the mass of the dust particles, wherein the dust measurement model takes the mass of the dust particles as an independent variable. According to the pesticide dust drift measuring device provided by the invention, the dust measuring model is as follows: