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基于嵌入式力學(xué)傳感器的圓錐指數(shù)儀設(shè)計(jì)與試驗(yàn)
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國家自然科學(xué)基金資助項(xiàng)目（30971696）;國家國際科技合作項(xiàng)目（2010DFA34670）


Design and Experiment on Improved Cone Penetrometer with Embedded Force Sensor
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    摘要:

    為消除在測量過程中因圓錐桿受被測材料摩擦力所產(chǎn)生的測量誤差，改進(jìn)了圓錐指數(shù)儀設(shè)計(jì)，將微型力學(xué)傳感器嵌入到圓錐桿下端，實(shí)現(xiàn)了對土壤和青貯玉米飼料壓實(shí)度的精確測量。試驗(yàn)結(jié)果表明，測量2種土壤壓實(shí)度過程中，原有圓錐指數(shù)測量方法因圓錐桿受摩擦力作用所產(chǎn)生的測量誤差可忽略不計(jì)。而在青貯玉米飼料壓實(shí)度測量過程中，2種不同緊實(shí)度樣本中圓錐桿受摩擦力約占壓力傳感器測量值32.56%和34.05%，當(dāng)圓錐頭不受阻力時(shí)，嵌入式力學(xué)傳感器測量值為零，而壓力傳感器測量值約為110N和280N，表明原有測量結(jié)果存在較大誤差。

    Abstract:

    With the aim to preclude the effect of penetration friction component (PFC) between the penetration shaft and surrounding material during a penetration process, an improved cone penetrometer with a mini force transducer embedded in the cone tip was developed. This kind of cone penetrometer could measure the density of soil and silage correctly. The results showed that the effect of PFC could be negligible in the two kinds of soil samples. But during the density measurement of the two different density chopped maize samples, PFC accounted for 32.56% and 34.05% respectively in the measurement value of force sensor. When there was no resistance on the cone, the measurement value of embedded force sensor was zero, whereas the measurement value of force sensor were about 110N and 280N. Appreciable error was found in the original test results for chopped maize.

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孟繁佳,孫宇瑞,王聰穎,林劍輝.基于嵌入式力學(xué)傳感器的圓錐指數(shù)儀設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(1):80-84. Meng Fanjia, Sun Yurui, Wang Congying, Lin Jianhui. Design and Experiment on Improved Cone Penetrometer with Embedded Force Sensor[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(1):80-84.

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  • 在線發(fā)布日期: 2012-12-31
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