電子秤的(de)工(gong)作(zuo)原理 電(dian)(dian)子(zi)秤的工作原理以電(dian)(dian)子(zi)元(yuan)件(jian):稱(cheng)重傳感器,放(fang)大電(dian)(dian)路(lu)(lu),AD轉換電(dian)(dian)路(lu)(lu),單片機電(dian)(dian)路(lu)(lu),顯示電(dian)(dian)路(lu)(lu),鍵(jian)盤電(dian)(dian)路(lu)(lu),通(tong)訊接口(kou)電(dian)(dian)路(lu)(lu),穩壓電(dian)(dian)源(yuan)電(dian)(dian)路(lu)(lu)等電(dian)(dian)路(lu)(lu)組成。 當被稱(cheng)(cheng)物體(ti)放置在秤(cheng)(cheng)體(ti)的秤(cheng)(cheng)臺上(shang)時(shi),其重(zhong)(zhong)(zhong)量(liang)(liang)便通過(guo)秤(cheng)(cheng)體(ti)傳(chuan)遞到稱(cheng)(cheng)重(zhong)(zhong)(zhong)傳(chuan)感器(qi),傳(chuan)感器(qi)隨之產生力一電效(xiao)應,將物體(ti)的重(zhong)(zhong)(zhong)量(liang)(liang)轉換成(cheng)與被稱(cheng)(cheng)物體(ti)重(zhong)(zhong)(zhong)量(liang)(liang)成(cheng)一定(ding)函數(shu)關系(xi)的電信(xin)號(hao)。此信(xin)號(hao)由放大電路進行(xing)(xing)放大、經濾波后再由AD進行(xing)(xing)轉換,數(shu)字信(xin)號(hao)再送到微處器(qi)的CPU處理CPU不斷(duan)掃描鍵(jian)盤和(he)各(ge)功(gong)能開(kai)關,根(gen)據鍵(jian)盤輸(shu)入內(nei)(nei)容和(he)各(ge)種功(gong)能開(kai)關的狀態進行(xing)(xing)必要的判斷(duan)、分析、由儀(yi)表的軟件來控制各(ge)種運算。運算結(jie)果送到內(nei)(nei)存貯器(qi),需要顯示時(shi),CPU發出(chu)指令,從(cong)內(nei)(nei)存貯器(qi)中讀出(chu)送到顯示器(qi)顯示。 |
