電(dian)子秤的工作原理 電(dian)子秤的工作原理(li)以(yi)電(dian)子元件:稱重傳感器,放大電(dian)路(lu),AD轉換電(dian)路(lu),單片機(ji)電(dian)路(lu),顯(xian)示電(dian)路(lu),鍵盤(pan)電(dian)路(lu),通訊接口電(dian)路(lu),穩壓電(dian)源電(dian)路(lu)等電(dian)路(lu)組成(cheng)。 當被(bei)(bei)稱(cheng)(cheng)物體(ti)(ti)(ti)放置(zhi)在秤體(ti)(ti)(ti)的(de)秤臺上(shang)時,其重量(liang)(liang)便通過(guo)秤體(ti)(ti)(ti)傳(chuan)(chuan)遞到(dao)稱(cheng)(cheng)重傳(chuan)(chuan)感(gan)器(qi),傳(chuan)(chuan)感(gan)器(qi)隨之(zhi)產生力(li)一電效(xiao)應,將物體(ti)(ti)(ti)的(de)重量(liang)(liang)轉(zhuan)換(huan)成(cheng)與被(bei)(bei)稱(cheng)(cheng)物體(ti)(ti)(ti)重量(liang)(liang)成(cheng)一定(ding)函數關(guan)(guan)系的(de)電信號。此信號由(you)放大(da)電路進(jin)行放大(da)、經(jing)濾(lv)波后再由(you)AD進(jin)行轉(zhuan)換(huan),數字信號再送(song)到(dao)微處(chu)器(qi)的(de)CPU處(chu)理CPU不斷掃描鍵(jian)盤和各功(gong)(gong)能開關(guan)(guan),根(gen)據鍵(jian)盤輸入內(nei)(nei)容和各種功(gong)(gong)能開關(guan)(guan)的(de)狀態(tai)進(jin)行必要的(de)判斷、分析(xi)、由(you)儀(yi)表的(de)軟件來(lai)控制各種運算。運算結果送(song)到(dao)內(nei)(nei)存貯器(qi),需要顯示時,CPU發出(chu)指(zhi)令,從(cong)內(nei)(nei)存貯器(qi)中讀出(chu)送(song)到(dao)顯示器(qi)顯示。 |
