Cone index instrument and method for measuring soil cone index
A cone index and soil technology, applied in the field of agricultural engineering, can solve the problems of high cost and complex overall structure, and achieve the effect of simplified structure, low measurement cost and small volume
Inactive Publication Date: 2011-06-08
CHINA AGRI UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the above-mentioned shortcoming that the cost is too high and the overall structure is too complicated when the traditional pressure sensor is used to measure the soil cone index on the motor-driven cone index meter, and a kind of cone index meter and its method for measuring the soil cone index are provided. method
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[0043] In this embodiment, the no-load current and working current of the drive motor are measured by the Hall current sensor. Specifically, the Hall current sensor CS010G of Nanjing Camellia Ganglian Sensing and Control Technology Co., Ltd. is used. The current sensor is a voltage output, and the output is The voltage is calculated according to the voltage / current conversion coefficient of the current sensor and the power supply voltage. The input power supply voltage of the Hall current sensor model CS010G is 5V, and the voltage / current conversion coefficient is 0.2VA -1 ; The drive motor adopts a DC motor of M63x60 / I from Kahlig Antriebstechnik in Germany, the rotation radius of the transmission mechanism is 9.5mm, and the torque coefficient is 3.1Nm / A
[0044] Such as figure 2 The schematic block diagram of the connection between the Hall current sensor and the original soil cone index meter in the embodiment of the present invention is shown and image 3 The schematic diagram...
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The invention relates to a cone index penetrometer and a method for measuring the soil cone index, wherein the current sensor for cone index penetrometer is instead of the pressure sensor and is used for measuring the current of the driving motor. The method comprises: measuring the no-load current of the driving motor in cone index penetrometer under no-load condition; measuring the working current of the driving motor in the cone index penetrometer under busy condition; obtaining the load current based on the difference value of the no-load current and working current; the pressure of the cone bottom of the cone index penetrometer obtained by load current being divided by the cone bottom surface area of the cone index penetrometer to obtain the soil cone index penetrometer. The invention can simplify the structure of motor driven type cone index penetrometer, reduces the cost, and helps to popularize the motor driven type cone index penetrometer.
Description
technical field [0001] The invention relates to the field of agricultural engineering, in particular to a cone index meter and a method for measuring soil cone index. Background technique [0002] The degree of soil compaction not only affects the growth of crops, but also affects the trend of soil degradation, weathering and so on. Especially in recent years, with the large-scale application of large-scale agricultural machinery, the negative effects of soil compaction have attracted more and more attention. In order to objectively evaluate the degree of soil compaction, the quantitative performance index widely accepted internationally is the soil conicity index. The American Society of Agricultural Engineers (ASAE) has made detailed descriptions in its association standards ASAE Standard S313.3FEB04 and ASAE Standard EP542FEB99 for the measurement equipment of the soil cone index (ie, the cone index meter) and the operating specifications of the measurement process. It ...
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IPC IPC(8): G01N33/24
Inventor 孙宇瑞曾庆猛马道坤林剑辉孟繁佳
Owner CHINA AGRI UNIV