Method for monitoring plant growth by using unmanned aerial vehicle with multispectral light source
A multi-spectral light source and plant growth technology, which is applied in the field of plant growth monitoring using drones to carry multi-spectral light sources, can solve the problems of time-consuming and labor-consuming plant growth monitoring technology, and low monitoring accuracy, and achieve a simple and easy monitoring method operation, save manpower, and reduce the effect of error rate and complexity
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Embodiment 1
[0033] Example 1: figure 1 It is a flow chart of a method for monitoring plant growth using a multispectral light source carried by an unmanned aerial vehicle of the present invention. In this embodiment, rice planted in the field is taken as an example to specifically describe the process steps of the whole plant growth monitoring.
[0034] The first step is the selection of multi-spectral standard light source.
[0035] The characteristic wavelengths of rice are 491 nm, 545 nm, and 676 nm, respectively. Taking these three values as the peak wavelengths of narrow-band colored light, standard blue LEDs, standard green LEDs, standard red LEDs, and standard full-spectrum white LEDs are selected as the multi-spectrum wavelengths. Standard light source combination.
[0036] The second step is to establish the rice spectral database.
[0037] The color coordinates and reflection spectra of 100 healthy rice leaves, 100 diseased rice leaves and 100 aging rice leaves were collect...
Embodiment 2
[0042] Example 2: figure 2 It is a working schematic diagram of using a drone to carry a multispectral light source and an area array CCD spectral imager to monitor plant growth in the present invention. Such as figure 2 As shown, the UAV 1 carries a multi-spectral light source 2 and an area array CCD spectral imager 3 and flies above the field 6, flies and hovers according to the set route and position, and takes pictures of the plants 7 and stores information. A charging pile 4 is arranged around the field 6, and the charging pile 4 stores a supporting battery 5 for the drone. When the power detection device of the UAV 1 detects that the battery power of the UAV 1 is lower than 10%, the UAV 1 will automatically detect and locate, fly to the vicinity of the charging pile 4, and automatically replace the supporting battery 5 .
[0043] image 3 It is a schematic diagram of the scanning coverage area of the area array CCD spectral imager of the present invention. 3-1 is...
Embodiment 3
[0045] Embodiment 3: The method mentioned in the present invention can also be applied in plant factories.
[0046] In the plant factory, the plants planted have fixed red and blue LED combination light sources. Therefore, when monitoring the growth status of plants in a plant factory, first of all, turn off the blue LED and turn on the red LED, and the UAV 1 only carries the area array CCD spectral imager 3 to scan and shoot, and store information such as images, color coordinates, and reflection spectra. . Secondly, turn off the red LED, turn on the blue LED, scan and shoot again, and store relevant information. Finally, compare and analyze the information stored when a single red LED and a single blue LED are irradiated with the spectral information irradiated by the corresponding light source in the plant database to confirm the growth status of the plant and issue an analysis report. In this case, there is no need to choose a combination of multi-spectral light sources,...
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