基于单片机的门禁系统的设计.docx

1、基于单片机的门禁系统的设计基于单片机的门禁系统的设计基于单片机门禁系统的设计 学号:B11040926 姓名:宁志杰 日期:2014.12.31 Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-q

2、uality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet age

3、nt saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxid

4、ant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focu

5、ses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (5

6、0%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake基于单片机的门禁系统的设计 摘 要 门禁系统采用89C52 单片机作为控制核心，外围加蜂鸣器控制电路、开门指示灯电路、电控锁控制电路以及LCD液晶显示电

7、路等。门禁系统主要由CPU、工作指示电路、振荡电路、蜂鸣器电路、门控锁电路、矩阵键盘、读卡模块、显示模块等组成。该门禁系统采用射频卡完成刷卡进门，按刷卡出门等功能。其工作原理为:当刷卡时，蜂鸣器响一下，如卡权限获得允许，显示模块显示卡号，同时继电器动作将门锁打开，指示灯点亮，延时一段时间后继电器再次动作将门锁锁闭，指示灯熄灭。当按下出门按钮时，继电器动作将门锁打开，指示灯点亮，延时一段时间后继电器再次动作将门锁锁闭，指示灯熄灭。当输入初始密码时，若输入正确，继电器动作将门锁打开，指示灯点亮，延时一段时间后继电器再次动作将门锁锁闭。此外，程序中还增加了射频卡权限判断的功能，当遇到合法卡时显示卡号

8、，门锁打开，延时10s自动关闭，当遇到非法卡时不显示卡号门锁不开。本系统设计简单、性能优良，具有一定的实用性。 关键词:门禁，射频卡，电控锁，液晶显示，单片机控制 Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (m

9、I. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives

10、sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of

11、anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this sec

12、tion focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Me

13、thanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake洛阳理工学院毕业设计(论文)Access Control System Design ABSTRACT Entrance guard

14、system uses 89C52 single chip microcomputer as control core and periphery add a buzzer control circuit, open the door indicator light circuit, control circuit and control lock LCD display circuit, etc. Entrance guard system mainly by the CPU and reset circuit, the power indicative circuit, work inst

15、ructions circuit, oscillating circuit, a buzzer circuit, door control circuit, go out and lock button reading card module, display module. The entrance guard system uses rf card complete charge take the door, according to credit to go out, and other functions. Its working principle is: when credit,

16、a buzzer rang, such as card to be allowed to access, display module display card number, and at the same time relay action will open the door lock, indicator light, delay after period of time relay action will again only door lock, lights go out. When the press out button, the relay action will open

17、 the door lock, indicator light, delay after period of time relay action will again only door lock, lights go out. When the input password, if you input the correct, relay action will open the door lock, indicator light, delay after period of time relay action will lock door lock again. In addition,

18、 the program will also increase the rf card authority judgment function, when facing legal card showed the card number, door open, delay 10 s automatically shut off, when meeting the illegal CARDS dont show the card number locks dont open. The system is simple in design, good performance, and has pr

19、actical value! KEY WORDS: Access Control, Radio Frequency Card, Electronically Controlled Lock, LCD,MCU Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampl

20、ing volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of th

21、e 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food

22、in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer ch

23、romatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Me

24、thanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shakeI 前言 基于单片机的门禁系统的设计 . 前 言. 0 第1章 概述 . 1 1.1 系统

25、方案的比较 . 1 1.1.1 选题论证 . 1 1.1.2 方案选择 . 1 1.1.3 CPU的选择 . 2 1.1.4 射频卡的选择 . 3 1.1.5 液晶显示的选择 . 3 第2章 硬件电路的设计 . 4 2.1 电路原理 . 4 2.1.1 门禁系统主要组成 . 4 2.1.2 门禁系统工作原理 . 4 2.2 资源分配 . 5 2.3 最小系统设计 . 5 2.3.1 89C52的简述 . 6 2.4 最小系统的设计 . 8 第3章 硬件电路原理 . 9 3.1 门控锁电路 . 9 3.2 蜂鸣器电路 . 9 3.3 控制指示灯 . 10 3.4 44矩阵键盘. 10 3.5 读

26、卡模块 . 11 3.6 显示模块 . 13 3.6.1 LCD1602 主要技术参数 . 13 3.6.2引脚功能说明 . 13 3.6.3 1602指令集 . 15 3.6.4 与HD44780相兼容的芯片时序表 . 16 Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatabil