指纹门禁系统组成
Composition of fingerprint access control system
指纹门禁系统的硬件主要由微处理器、指纹识别 模块、液晶显示模块、键盘、实时时钟/日历芯片、电控锁和电源等组成。微处理器作为系统的上位机，控制整个系统。指纹识别模块主要完成指纹特征的采集、比对、存储、删除等功能。液晶显示模块用于显示开门记录、实时时钟和操作提示等信息，和键盘一起组成人机界面。
The hardware of fingerprint access control system is mainly composed of microprocessor, fingerprint identification module, LCD module, keyboard, real-time clock / calendar chip, electronic lock and power supply. As the upper computer of the system, the microprocessor controls the whole system. Fingerprint identification module mainly completes the collection, comparison, storage, deletion and other functions of fingerprint features. The LCD module is used to display the information of door opening record, real-time clock and operation prompt, and forms the human-machine interface with the keyboard.
按系统功能，软件主要由指纹处理模块、液晶显示模块、实时时钟模块和键盘扫描模块等组成。指纹处理模块主要负责微处理器与指纹识别模块之间命令和返回代码的信息处理；液晶显示模块根据液晶显示模块的时序，编写驱动程序，以实现显示汉字、字符的目的；实时时钟模块根据时钟芯片的时序，编写通讯程序．实现对时钟芯片的读写操作；键盘扫描模块就是根据键盘的设计原理编写键盘程序来识别有无按键动作和按下键的键号。
According to the system function, the software is mainly composed of fingerprint processing module, LCD module, real-time clock module and keyboard scanning module. The fingerprint processing module is mainly responsible for the information processing of commands and return codes between the microprocessor and fingerprint identification module; the LCD module compiles the driver program according to the timing of the LCD module to realize the purpose of displaying Chinese characters and characters; the real-time clock module compiles the communication program according to the timing of the clock chip to realize the reading and writing operation of the clock chip; the keyboard scanning module Block is to write a keyboard program according to the design principle of the keyboard to identify whether there is a key action and press the key number.
按操作流程，软件主要由指纹开门程序、指纹管理程序、密码管理程序和系统设置程序四部分组成。其中指纹管理、密码管理和系统设置三部分只有管理员才有此权限。指纹管理程序由登记指纹模板程序、删除指纹模板程序、清空指纹模板程序和浏览开门记录程序四部分组成；密码管理程序由密码修改程序和密码开门程序两部分组成；系统设置程序由时间设置程序和日期设置程序两部分组成。
According to the operation process, the software is mainly composed of fingerprint door opening program, fingerprint management program, password management program and system setting program. Among them, fingerprint management, password management and system settings are three parts. Only administrators have this permission. The fingerprint management program consists of four parts: registering fingerprint template program, deleting fingerprint template program, clearing fingerprint template program and browsing door opening record program; password management program is composed of password modification program and password opening program; system setting program is composed of time setting program and date setting program.