【導讀】本設計是基于89C51單片機為控制核心的汽車蓄電池電壓檢測系統(tǒng)。小、功能強、價格低廉而得到廣泛應用。池電壓低于2V時，顯示“電壓過低，請充電”的提示信息。件電路，工作原理進行了詳細的介紹,同時給出了軟件設計的流程圖。隨著人類科技文明的發(fā)展，目前汽車上用于蓄電池檢測顯示的設備過于復雜。的蓄電池系統(tǒng)，將會影響自己的實踐能力。首先，在Protel軟件環(huán)境中進行硬件。和調(diào)試，最后生成.hex文件。器的硬件電路，并采用c語言進行程序設計。由于課程設計需要。編寫顯示字符的程序。系統(tǒng)采用AT89C51單片機作為主控芯片，AD0804芯片作為電壓檢測的AD轉(zhuǎn)換模塊。電路的復雜性，所以電路結(jié)構(gòu)簡單、調(diào)試也相對方便，經(jīng)濟實惠。0C51是INTEL公司MCS-51系列單片機中最基本的產(chǎn)品，它采用INTEL公司?？煽康腃HMOS工藝技術(shù)制造的高性能8位單片機，屬于標準的MCS-51的HCMOS產(chǎn)品。的體系結(jié)構(gòu)和指令系統(tǒng)。

　　

【正文】 ++。 if(j5) { fb=0。 } if(j=5) { fb=1。 if(j==10) j=0。 } for(loop=0。loop8。loop++)//行 1 { disp_Hz(loop,6,loop+8,fb)。 } } else 微機原理及應用課程設計說明書 33 { fb=0。 for(loop=0。loop16。loop++)//行 1 { disp_Ez(loop,6,12,fb)。 } } } } uchar code HZ[]= { 0x00,0x00,0x40,0x40,0x42,0x44,0x44,0x44, 0x58,0x44,0x40,0x44,0x40,0x44,0x7F,0x44, 0x40,0x44,0x40,0x44,0x50,0x44,0x48,0x44, 0xC6,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,/*當 ,0*/ 0x08,0x00,0x08,0x00,0xE8,0xFF,0x29,0x09, 0x2E,0x49,0x28,0x89,0xE8,0x7F,0x08,0x00, 0x08,0x00,0xC8,0x0F,0x0C,0x40,0x0B,0x80, 0xE8,0x7F,0x08,0x00,0x08,0x00,0x00,0x00,/*前 ,1*/ 0x12,0x00,0x12,0x00,0x12,0xFA,0x52,0xAA, 0x77,0xAB,0x52,0xAB,0xD2,0xAA,0xDA,0xFA, 0x52,0xAA,0x52,0xAA,0x37,0xAA,0x92,0xAA, 0x12,0xFB,0x12,0x06,0x12,0x00,0x00,0x00,/*蓄 ,2*/ 0x00,0x00,0x00,0x00,0xF8,0x1F,0x88,0x08, 0x88,0x08,0x88,0x08,0x88,0x08,0xFF,0x7F, 0x88,0x88,0x88,0x88,0x88,0x88,0x88,0x88, 0xF8,0x9F,0x00,0x80,0x00,0xF0,0x00,0x00,/*電 ,3*/ 0x10,0x04,0x60,0x04,0x02,0x7E,0xCC,0x01, 0x80,0x00,0x80,0x00,0xFC,0x3F,0x40,0x40, 0x20,0x40,0xFF,0x4F,0x10,0x40,0x08,0x44, 0xF8,0x47,0x00,0x40,0x00,0x78,0x00,0x00,/*池 ,4*/ 0x00,0x00,0x00,0x00,0xF8,0x1F,0x88,0x08, 0x88,0x08,0x88,0x08,0x88,0x08,0xFF,0x7F, 微機原理及應用課程設計說明書 34 0x88,0x88,0x88,0x88,0x88,0x88,0x88,0x88, 0xF8,0x9F,0x00,0x80,0x00,0xF0,0x00,0x00,/*電 ,5*/ 0x00,0x80,0x00,0x60,0xFE,0x1F,0x02,0x40, 0x82,0x40,0x82,0x40,0x82,0x40,0x82,0x40, 0xFA,0x7F,0x82,0x40,0x82,0x40,0x82,0x44, 0x82,0x58,0x82,0x40,0x02,0x40,0x00,0x00,/*壓 ,6*/ 0x00,0x00,0x00,0x00,0x00,0x36,0x00,0x36, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*： ,7*/ 0x00,0x00,0x00,0x00,0xF8,0x1F,0x88,0x08, 0x88,0x08,0x88,0x08,0x88,0x08,0xFF,0x7F, 0x88,0x88,0x88,0x88,0x88,0x88,0x88,0x88, 0xF8,0x9F,0x00,0x80,0x00,0xF0,0x00,0x00,/*電 ,0*/ 0x00,0x80,0x00,0x60,0xFE,0x1F,0x02,0x40, 0x82,0x40,0x82,0x40,0x82,0x40,0x82,0x40, 0xFA,0x7F,0x82,0x40,0x82,0x40,0x82,0x44, 0x82,0x58,0x82,0x40,0x02,0x40,0x00,0x00,/*壓 ,1*/ 0x40,0x00,0x40,0x40,0x42,0x20,0xCC,0x1F, 0x00,0x20,0x08,0x40,0x48,0x40,0x88,0x41, 0x08,0x40,0x08,0x48,0x08,0x50,0xFF,0x4F, 0x08,0x40,0x08,0x40,0x08,0x40,0x00,0x00,/*過 ,2*/ 0x00,0x01,0x80,0x00,0x60,0x00,0xF8,0xFF, 0x07,0x00,0x00,0x00,0xFC,0xFF,0x84,0x40, 0x84,0x20,0x84,0x00,0xFE,0x41,0x82,0x8E, 0x83,0x30,0x82,0x40,0x80,0xF8,0x00,0x00,/*低 ,3*/ 0x00,0x00,0x00,0x00,0x00,0x58,0x00,0x38, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*， ,4*/ 0x40,0x00,0x42,0x00,0xCC,0x7F,0x00,0x20, 0x00,0x10,0x44,0x00,0x54,0xFF,0x54,0x15, 微機原理及應用課程設計說明書 35 0x54,0x15,0x7F,0x15,0x54,0x55,0x54,0x95, 0x54,0x7F,0x44,0x00,0x40,0x00,0x00,0x00,/*請 ,5*/ 0x04,0x00,0x04,0x80,0x84,0x80,0xC4,0x40, 0xA4,0x30,0x9C,0x0F,0x85,0x00,0x86,0x00, 0x84,0x00,0x84,0x7F,0xA4,0x80,0xC4,0x80, 0x84,0x81,0x04,0xF0,0x04,0x00,0x00,0x00,/*充 ,6*/ 0x00,0x00,0x00,0x00,0xF8,0x1F,0x88,0x08, 0x88,0x08,0x88,0x08,0x88,0x08,0xFF,0x7F, 0x88,0x88,0x88,0x88,0x88,0x88,0x88,0x88, 0xF8,0x9F,0x00,0x80,0x00,0xF0,0x00,0x00,/*電 ,7*/ }。 //數(shù)字 uchar code Ez[]={ 0x00,0x00,0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*0,0*/0x00,0x00,0x10,0x20,0x10,0x20,0xF8,0x3F,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,/*1,1*/0x00,0x00,0x70,0x30,0x08,0x28,0x08,0x24,0x08,0x22,0x88,0x21,0x70,0x30,0x00,0x00,/*2,2*/x00,0x00,0x30,0x18,0x08,0x20,0x88,0x20,0x88,0x20,0x48,0x11,0x30,0x0E,0x00,0x00,/*3,3*/0x00,0x00,0x00,0x07,0xC0,0x04,0x20,0x24,0x10,0x24,0xF8,0x3F,0x00,0x24,0x00,0x00,/*4,4*/0x00,0x00,0xF8,0x19,0x08,0x21,0x88,0x20,0x88,0x20,0x08,0x11,0x08,0x0E,0x00,0x00,/*5,5*/0x00,0x00,0xE0,0x0F,0x10,0x11,0x88,0x20,0x88,0x20,0x18,0x11,0x00,0x0E,0x00,0x00,/*6,6*/0x00,0x00,0x38,0x00,0x08,0x00,0x08,0x3F,0xC8,0x00,0x38,0x00,0x08,0x00,0x00,0x00,/*7,7*/0x00,0x00,0x70,0x1C,0x88,0x22,0x08,0x21,0x08,0x21,0x88,0x22,0x70,0x1C,0x00,0x00,/*8,8*/0x00,0x00,0xE0,0x00,0x10,0x31,0x08,0x22,0x08,0x22,0x10,0x11,0xE0,0x0F,0x00,0x00,/*9,9*/0x00,0x00,0x00,0x30,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*.,10*/0x08,0x00,0x78,0x00,0x88,0x07,0x00,0x38,0x00,0x0E,0xC8,0x01,0x38,0x00,0x08,0x00,/*V,11*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,12*/ }。