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A device for measuring the strength of crop stalks planted in groups and its application

A strength measurement and measurement device technology, applied in the field of agricultural engineering, can solve problems such as difficulty in meeting the needs of breeding screening and agricultural production, inability to save data, destructiveness, etc., and achieve the effect of non-destructive measurement of living bodies and accurate measurement results

Active Publication Date: 2016-07-06
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are still some defects in the existing technology: the stalk strength tester (DIK-7400) produced in Japan uses a mechanical spring dynamometer to measure the bending resistance of a single stalk, and the movement of the pointer indicates the measurement force. Display module, manual reading will produce subjective errors, and the data cannot be saved; the microcomputer stalk strength tester YYD-1 needs to cut off the stalk of a single crop, take it back to the room and then place it horizontally on a special bracket for measurement, which is destructive. In vivo measurements cannot be carried out in the field; "a device for measuring the strength of rape stalks" and "a device for measuring the strength of corn stalks" use a clamping device to push a single stalk to make it bend during field measurement, and obtain the stalk The amount of force used when the stalk breaks destroys the growth state of the stalk; "A device and method for measuring the lodging resistance strength of hand-held crops" uses a clamping device to push a single stalk to obtain the reaction force and the angle of stalk inclination , unable to meet the needs of population measurement in breeding plots
Therefore, the existing methods and devices for measuring stem strength of individual crops are difficult to meet the needs of breeding screening and agricultural production, and it is urgent to explore a technology for measuring stem strength of group crops

Method used

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  • A device for measuring the strength of crop stalks planted in groups and its application
  • A device for measuring the strength of crop stalks planted in groups and its application
  • A device for measuring the strength of crop stalks planted in groups and its application

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Experimental program
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Effect test

Embodiment 1

[0046] The structure of the group crop stem strength measuring device is as follows: figure 1 shown.

[0047] The pressure sensor 2, after the experimental design and pre-experiment, takes wheat as the measurement object, and determines the measuring range of the sensor to be 1kg. According to the requirements of the system and the consideration of the overall structure, select a single-point pressure sensor with a model number of NA6 and a rated load of 1kg. The working voltage is 5-12VDC, the nonlinearity is 0.02% FS, and the safe overload rate is 150% FS , the sensitivity is 0.85-1.15mV / V, the relationship between the sensor output voltage and the force is linear. One end of the sensor is fixed on the hollow tube 6, and one end is pressed and outputs a voltage signal at the same time.

[0048] The function of the mechanical structure part of the present invention is to transmit the reaction force generated by the wheat stalk to the sensor when it is stressed, and the bott...

Embodiment 2

[0056] For the measurement of the stalk strength of corn planted in groups, a single-point pressure sensor with a sensor range of 10kg is selected. The size of the measured corn test area is 300cm×600cm, four sensors are symmetrically arranged, and the length of the stem is 300cm. Other parts are identical with embodiment 1.

[0057] When measuring the stalk strength of group-planted corn, two operators hold the measuring device, travel in the field, and push and sweep the touch rod to the corn stalk. The 3-4 nodes at the base of the corn stalk were selected to measure the rebound force of the stalk. After preliminary tests, the rebound force of the corn stalk was determined to be 207.48N.

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Abstract

The invention relates to an apparatus for measuring stem intensity of crops in colony plantation, which comprises a touch rod contacted to the colony crop, more than two sensors, a hollow tube and a processing system; the touch rod is uniformly provided with the sensors, and the sensor is fixed on the hollow tube; the processing system comprises an acquisition module, a correction processing module, a displaying module and a power supply, and the processing system is fixed on one end of the hollow tube. The apparatus for measuring stem intensity of crops in colony plantation base on mechanics provided by the invention has the advantages of accurate and reliable measurement result, thereby realizing all coverage type measurement of the plantation district, and especially adapting to crop stem intensity measurement of the breeding district.

Description

technical field [0001] The invention belongs to the field of agricultural engineering, and in particular relates to a device for applying pressure by means of physical principles to measure characteristics of crops and its application. Background technique [0002] The stem strength of crops determines the lodging resistance of crop varieties, and lodging is one of the main limiting factors in the process of crop production. Taking wheat as an example, lodging after grain filling can lead to a loss of more than 40% of wheat yield. Therefore, in the process of crop breeding, strains with higher stem strength need to be screened, and the lodging resistance of crops has become an important selection index. Therefore, how to accurately and objectively measure the stem strength of crops is very important. [0003] The stem strength of crops is firstly closely related to the characteristics of the stem itself, including the length of each node, stem thickness, wall thickness, plan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
Inventor 朱大洲陈立平郑玲潘大宇高权陈泉王成
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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