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基于DSP的谷物含水率在線測(cè)量方法
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Universal Online Measuring Method of Grain Moisture Content Based on DSP
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    摘要:

    提出一種基于DSP的谷物含水率測(cè)量方法。谷物通過(guò)自身重力導(dǎo)入到測(cè)試腔內(nèi)，由MCU和DSP為核心器件構(gòu)成的測(cè)試系統(tǒng)對(duì)谷物含水率進(jìn)行測(cè)量、存儲(chǔ)，并通過(guò)LCD顯示。經(jīng)過(guò)測(cè)量的谷物，通過(guò)螺旋輸送器排出，進(jìn)行下一步測(cè)量。系統(tǒng)通過(guò)DS18S20溫度傳感器對(duì)谷物溫度進(jìn)行測(cè)量，并對(duì)溫度予以補(bǔ)償。該方法可使谷物含水率測(cè)量誤差低于1%，優(yōu)于常規(guī)測(cè)量方法。

    Abstract:

    A grain moisture measuring method based on DSP is studied. First, the grain is leaded-in measuring capacitance by gravity. Secondly, the grain moisture is measured through MCU and DSP, and the measured data are stored or displayed on LCD. Finally, the measured grain is ejected by a discharging screw feeder, and a measuring cycle is finished. A DS18S20 is adopted to detect and compensate the temperature in the process of measuring grain moisture. The measuring precision is higher than 1% RH, and exceeds the conventional measurement methods.

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黃操軍,田芳明,劉坤,許秀英,李愛(ài)傳.基于DSP的谷物含水率在線測(cè)量方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(Z1):61-64. Universal Online Measuring Method of Grain Moisture Content Based on DSP[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(Z1):61-64.

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