US 2017/0318757 A1 · DYNAMIC DETECTION DEVICE FOR GROWTH OF POTTED CROP AND DETECTION METHOD THEREFOR

Abstract

A dynamic detection device for the growth of a potted crop, includes a detection platform and a rotating shaft. A first cantilever frame is fixed at an upper portion of the rotating shaft; a laser ranging sensor is mounted at a tail end of the first cantilever frame; a second cantilever frame is fixed at a lower portion of the rotating shaft, and a pressure sensor is mounted at a tail end of the second cantilever frame. The detection platform has several bases; weight information crop is collected via a load sensor; stem diameter and plant height information crop is collected via the pressure sensor, a photoelectric encoder and the laser ranging sensor; and growth information crop is described through information fusion, which can improve the efficiency and continuously monitor dynamic change information about the growth of a target crop in a growth process.

Claims5

Dependent claims

A dynamic detection device for the growth of a potted crop, comprising a detection platform and a rotating shaft, wherein, a rotating motor is mounted on a bottom end of the rotating shaft and configured to drive the rotating shaft to rotate;
a first cantilever frame is fixed to a top part of the rotating shaft, and a laser ranging sensor is mounted at a tail end of the first cantilever frame;
a second cantilever frame is fixed to a bottom part of the rotating shaft, and a first step motor is fixed to the rotating shaft and configured to drive the second cantilever frame to move left and right via a gear-and-rack device;
a pressure sensor is mounted at a tail end of the second cantilever frame;
a second step motor is arranged on the detection platform and configured to drive the rotating shaft to move left and right via the gear-and-rack device;
wherein the detection platform is further provided with several bases, each of which is provided with a load sensor, and the bases are arranged circularly along the rotating shaft.

3 more elements

A method that utilizes the dynamic detection device for the growth of a potted crop to detect the growth of a potted crop dynamically, comprising the following steps:
A. presetting of a multi-sensor detection device
(1) employing a blank sample as a calibration sample, adjusting the blank sample and potted crop samples so that they have the same amount of matrix material, water and fertilizer, and employing the same fertilization and irrigation measures for the samples;
(2) placing the blank sample and the potted crop samples on the bases;
(3) adjusting the position of the first cantilever frame according to the demand of the potted crop samples so that the laser ranging sensor is located right above the potted crop samples, and adjusting the position of the second cantilever frame so that the pressure sensor is located at the stems of the potted crop samples;
setting an initial position of the second cantilever frame that is provided with the pressure sensor, so that the outermost edge of the pressure sensor is tangent to a circle formed by all potted crop samples;
(4) calibrating the load sensor arranged between the base and the blank sample;
(5) setting the initial positions of the electric motors on the computer according to the demand for detection, and determining the rotation angles, start times and cycle times;
B. starting the dynamic detection device for the growth of a potted crop to detect the growth of the crop by:
first, acquiring the mass information of the blank sample with the dynamic detection device for the growth of a potted crop;
then, moving the sensors of the dynamic detection device for the growth of a potted crop to preset positions in an order preset on the computer to execute detection after the reference information is determined, accomplishing acquisition of crop mass, stem diameter, and plant height information in one cycle period, and then resetting;
and
next, repeating the above-mentioned detection process according to the preset cycle time;
thus, the dynamic detection of crop growth information is accomplished;
C. quantizing and describing characteristic parameters of growth of the potted crop samples by:
(1) calculating the difference between the mass information acquired with the load sensor for each potted crop sample and the mass information acquired with the load sensor for the blank sample, to obtain the change of crop biomass;
(2) extracting characteristic parameters (stem diameter and plant height) from the information of the potted crop samples acquired with the laser ranging sensor and the pressure sensor;
and
(3) quantizing, describing, and outputting growth change information in the crop growth process by information fusion, according to a change of acquired information of stem diameter, plant height, and biomass.

16 more elements

Dynamic detection device for growth of potted crop and detection method therefor

Life of this patent

Dynamic detection device for growth of potted crop and detection method therefor

Life of this patent

Abstract

Claims5