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PY3-C-025-S,PY3-C-050-S,PY3-F-025-S,PY3-F-050-S
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隨著技術(shù)的進(jìn)步,由稱重傳感器制作的電子衡器已廣泛地應(yīng)用到各行各業(yè),實(shí)現(xiàn)了對物料的快速、準(zhǔn)確的稱量，特別是隨著微處理機(jī)的出現(xiàn)，工業(yè)生產(chǎn)過程自動化程度化的不斷提高，稱重傳感器已成為過程控制中的一種必需的裝置，從以前不能稱重的大型罐、料斗等重量計(jì)測以及吊車秤、汽車秤等計(jì)測控制，到混合分配多種原料的配料系統(tǒng)、生產(chǎn)工藝中的自動檢測和粉粒體進(jìn)料量控制等，都應(yīng)用了稱重傳感器，目前，稱重傳感器幾乎運(yùn)用到了所有的稱重領(lǐng)域。
1．高速定量分裝系統(tǒng)
本系統(tǒng)由微機(jī)控制稱重傳感器的稱重和比較，并輸出控制信號，執(zhí)行定值稱量，控制外部給料系統(tǒng)的運(yùn)轉(zhuǎn)，實(shí)行自動稱量和快速分裝的任務(wù)。
系統(tǒng)采用MCS-51單片機(jī)和V/F電壓頻率變換器等電子器件，其硬件電路框圖如圖1所示，用8031作為中央處理器，BCD拔碼盤作為定值設(shè)定輸入器，物料裝在料斗里，其重量使傳感器彈性體發(fā)生變形，輸出與重量成正比的電信號，傳感器輸出信號經(jīng)放大器放大后，輸入V/F轉(zhuǎn)換器進(jìn)行A/D轉(zhuǎn)換，轉(zhuǎn)換成的頻率信號直接送入8031微處理器中，其數(shù)字量由微機(jī)進(jìn)行處理。微機(jī)一方面把物重的瞬時(shí)數(shù)字量送入顯示電路，顯示出瞬時(shí)物重，另一方面則進(jìn)行稱重比較，開啟和關(guān)閉加料口、放料于箱中等一系列的稱重定值控制。
