单片机锂电池容量测试仪设计小创意 附后实物及软件语言源代码

前几天在家看到我家的锂电吸尘器没电了，但是充满后用了一会就又没了，电量明明显示还有两格，心想这个东西太不靠谱了，于是就寻思如果能测试出电池的容量就好了，便自己动手做了一个锂电容量测试仪，然后实际测试了一下，发现准确度和精度都还可以，下面分享出来供大家学习参考一下。

说明：本次实验项目是用汇编语言开发的，如果感兴趣的小伙伴也可以试着用C语言开发一下哦！

老规矩废话不多说，先上实物图：

工作原理：此设计是用万能板搭建，显示用12864字库屏，主板与屏幕分开，这个单片机电池容量测试仪对于锂电/镍氢程序实现自动识别。该设备会自动识别电池类型（锂电池还是镍氢电池）。

识别的方法：电压高于2.7就是锂电，低于2.7高于2V就是锂电低电压，会有提示；高于1低于2，就是镍氢电池。左下角放电测试时会显示截止电压。

本设计仅供参考如果设计有不合理之处请大神勿喷，再次仅仅起到学习和抛砖引玉的效果。

本设计汇编语言参考源代码如下：

;————————-

; LCD12864.ASM

;

;12864液晶屏显示驱动程序

;————————-

SENDI:;——串行控制命令写入————————

; LCALL FD ;等忙时间

MOV RAM0,#15

DJNZ RAM0,$

;————第一字节,11111000,从MCU到屏,控制字 ,rs,rw都为0

SETB RS ;片选为1

MOV R7,#5

SENDI1: SETB RW ;前四位都为1

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDI1

MOV R7,#3

SENDI2: CLR RW

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDI2

;——-第二三字节,8位的高四位——————

MOV R6,#2

SENDI5: MOV R7,#4

SENDI3: RLC A

MOV RW,C

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDI3

MOV R7,#4

CLR C

SENDI4: MOV RW,C ;后4位全为0

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDI4

DJNZ R6,SENDI5

CLR RS

RET

;———————————————–

SENDD: ;——串行数据字节写入———————

; LCALL FD ;等忙时间

MOV RAM0,#15

DJNZ RAM0,$

;————第一字节,11111000,从MCU到屏,控制字

SETB RS ;片选为1

MOV R7,#5

SENDD1: SETB RW ;前四位都为1

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDD1

CLR RW ;第三位,从MCU到LCD,0

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

SETB RW ;第二位,数据,1

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

CLR RW ;第1位,,0

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

;——-第二三字节,8位的高四位——————

MOV R6,#2

SENDD5: MOV R7,#4

SENDD3: RLC A

MOV RW,C

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDD3

MOV R7,#4

CLR C

SENDD4: MOV RW,C ;后4位全为0

NOP

NOP

CLR E

NOP

NOP

NOP

NOP

SETB E

DJNZ R7,SENDD4

DJNZ R6,SENDD5

CLR RS

RET

/*从缓存取数据送显示*/

LCDDS: MOV DPTR,#TAB1F ;

LCDDS1: MOV A,@R0 ;取列表

MOVC A,@A+DPTR

LCALL SENDD

INC R0

DJNZ DSDAT,LCDDS1 ;取完N个数

RET

LCDDS2: MOV DPTR,#TAB1F

LCDDS3: MOV A,R0

MOV CA,@A+DPTR

LCALL SENDD

INC R0

DJNZ DSDAT,LCDDS3

RET

TAB10: DB ” 电池容量测试 ” ;

TAB11: DB “V=0.00V I=0.00A “

TAB12: DB “0: 0mAh “

TAB13: DB “SV2.70V SR0.00A”

; 0 10 141618 22 30

TAB1F: DB “0123456789: -.=VRLAmD 待机….SV已结束! “,0

/*

TAB1:

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,96,0,0,96,0,0,0,0;

DB 0,0,192,0,102,0,195,128,99,0,99,96,49,128,0,0;

DB 0,0,192,0,99,0,222,0,97,128,99,252,49,128,0,0;

DB 0,0,192,0,96,0,198,192,96,240,103,96,49,128,0,0;

DB 0,0,192,0,126,0,255,128,127,176,121,240,49,240,0,0;

DB 0,0,248,7,192,3,204,3,248,1,231,48,63,176,0,0;

DB 0,31,152,0,243,0,219,128,126,192,103,240,241,224,0,0;

DB 0,1,152,0,243,0,254,0,118,96,118,48,49,252,0,0;

DB 0,1,176,1,182,1,247,240,236,0,251,224,63,128,0,0;

DB 0,3,48,1,188,15,254,1,225,193,225,188,113,128,0,0;

DB 0,3,48,195,56,96,198,199,111,3,111,225,195,192,0,0;

DB 0,6,48,198,112,96,222,192,99,0,97,192,6,96,0,0;

DB 0,12,48,204,240,97,223,193,227,240,99,96,12,56,0,0;

DB 0,56,31,152,31,224,248,192,254,0,102,48,56,30,0,0;

DB 0,0,0,0,0,0,0,0,0,0,124,28,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,48,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,48,0,3,0,0,48,1,128,24,0,0,0,0;

DB 0,0,0,96,0,115,1,158,48,97,176,27,48,0,0,0;

DB 0,0,0,96,3,195,0,246,48,49,152,49,176,0,0,0;

DB 0,0,0,254,0,3,224,103,176,1,128,49,176,0,0,0;

DB 0,0,1,134,0,127,102,127,176,1,240,108,48,0,0,0;

DB 0,0,1,134,7,195,99,127,176,239,128,118,96,0,0,0;

DB 0,0,1,246,0,195,96,127,179,225,128,243,96,0,0,0;

DB 0,0,1,134,1,182,96,255,176,99,193,177,224,0,0,0;

DB 0,0,1,134,3,118,97,255,176,110,192,48,192,0,0,0;

DB 0,0,1,246,3,252,193,156,48,102,96,49,224,0,0,0;

DB 0,0,1,134,0,24,195,54,48,119,236,51,56,0,0,0;

DB 0,0,1,254,0,51,192,102,112,124,60,62,30,0,0,0;

DB 0,0,1,206,0,97,128,192,48,0,28,48,0,0,0,0;

DB 0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 7,156,243,224,12,32,15,128,0,0,0,0,13,136,0,192;

DB 8,136,74,64,18,96,10,128,0,0,0,0,5,24,1,32;

DB 8,8,72,143,130,35,226,0,0,0,0,0,5,8,1,32;

DB 8,8,72,128,12,32,2,0,0,0,0,0,5,8,1,32;

DB 8,8,73,0,2,32,2,0,0,0,0,0,5,8,1,32;

DB 8,136,73,32,18,32,2,0,0,0,0,0,2,8,1,32;

DB 7,8,243,224,12,112,7,0,0,0,0,0,2,28,64,192;

DB 0,48,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

/* (128 X 64 )*

TAB2:

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,24,0,0,0,0,0,0,0,0,0,0,192,0,0;

DB 0,0,28,0,0,0,0,0,1,192,56,0,48,112,0,0;

DB 0,0,28,0,0,222,0,0,1,192,24,0,48,96,0,0;

DB 0,0,62,0,0,254,3,128,1,192,24,0,112,96,0,0;

DB 0,0,119,0,0,206,31,192,3,224,24,0,112,96,0,0;

DB 0,0,115,128,0,207,249,128,3,123,24,0,224,126,0,0;

DB 0,0,225,192,0,206,219,128,7,61,152,0,195,240,0,0;

DB 0,1,192,224,0,254,219,128,14,13,152,1,192,96,0,0;

DB 0,3,128,112,0,254,219,0,12,1,152,3,192,96,0,0;

DB 0,3,15,252,0,206,223,128,24,225,152,3,192,127,128,0;

DB 0,6,126,63,128,206,240,0,63,241,152,6,195,240,0,0;

DB 0,12,0,31,192,254,192,0,110,97,152,12,206,224,0,0;

DB 0,56,0,0,0,238,192,0,198,97,152,24,192,96,0,0;

DB 0,96,1,128,1,204,192,24,7,225,152,0,192,96,0,0;

DB 0,0,31,192,1,140,192,24,6,225,152,0,192,252,0,0;

DB 0,3,241,224,1,140,192,56,6,192,24,0,195,224,0,0;

DB 0,1,129,192,3,140,224,120,6,12,24,0,192,96,0,0;

DB 0,1,193,128,3,60,127,248,6,28,24,0,192,96,0,0;

DB 0,0,193,128,6,28,31,192,7,252,24,0,192,127,192,0;

DB 0,0,255,128,6,28,0,0,1,240,248,1,255,240,0,0;

DB 0,0,224,0,0,24,0,0,0,0,120,0,192,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,56,0,192,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0;

DB 1,0,0,128,0,0,0,0,0,128,0,0,0,0,0,0;

DB 1,0,1,224,3,0,7,240,1,128,0,240,3,0,0,248;

DB 25,112,7,192,3,0,5,80,1,248,61,160,1,128,7,16;

DB 24,192,7,0,3,224,7,96,31,0,41,32,4,192,0,16;

DB 0,96,2,128,31,48,1,120,18,224,41,160,12,96,3,144;

DB 17,128,7,224,23,176,15,192,3,32,41,96,9,48,28,16;

DB 48,224,7,128,23,32,2,96,6,160,57,216,19,24,7,144;

DB 39,160,0,248,15,160,4,48,11,32,41,224,54,28,25,144;

DB 36,36,31,128,15,224,15,252,50,160,34,96,69,198,15,16;

DB 40,36,32,128,3,2,53,167,3,32,34,16,15,32,14,16;

DB 24,38,0,128,1,6,6,96,2,32,34,78,31,96,0,16;

DB 0,54,0,128,0,254,0,0,2,32,35,130,0,0,0,112;

DB 0,14,0,128,0,0,0,0,0,96,0,0,0,0,0,16;

DB 0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;

DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;”

汇编语言显得有些复杂，感兴趣的小伙伴也可以用C语言试一下哦！

鉴于篇幅有限，只能写部分参考代码，如果需要完整源代码请私信我或者留言,谢谢！

如果喜欢我的文章请评论转发加关注哦。

来源：从零开始学单片机设计