文档介绍：毕业设计（论文）
标
题：
基于PLC密码锁的系统设计
学生姓名：_
宋理想
系
部：
电力工程系
专
业：
电气自动化
班
级：_
09级自动化02班
指导教师：_
王全亮
郑州电力职业技术学院
i gent I ock, it has high e I ectronic door I ock funct ion, and i ntroduced the i nteI Ii gent management, expert ana lysis system and other funct ions, the code Iock with high secur ity, re I iabi I ity, is appIied widely more and more.
With the Iarge-scaIe i ntegrated c i rcu i t techno Iogy deveIopment, especia I Iy the single came out, with the emergence of microprocessor smart I ocks, i t has the e I ectron i c code I ock funct i on, but a I so the i ntroduct i on of i nteI I i gent management, expert ana lysis system and other funct i ons, so that the Iock has high secur ity, re I i ab i I i ty, widely used As a genera I purpose eIectron i c Iocks, mainly cons i sts of three parts: digital cipher input ci rcuit, cipher lock password Iock controI ci rcuit and display ci rcuit [8 ]. As the eIectronic password Iock input ci rcuit, the opt ions ava i IabIe are digital mechan i ca I keyboard and the touch type digital keyboard and other
Thi s design i s the use of Siemens programmab I e controI I er programmi ng password procedures, appI i cab Ie to near Iy 20 counters. Comb i nat i on Iock des i gn simi lar to a bank automat i c teI I er mach i ne keyboard. Fee I to it, the password i nput method. I n fact, the des i gn and character i st i cs of the counter, the counter set number of severaI such corresponding key is severaI times. The design is divided into the Iocking and unlocking of the I i nk, I i nk the s i x keys to effect i ve I ock, un I ock the I i nk set of seven keys to effect i ve, so the un I ock code number i s greater than or equa I to six, the unlocking code is greater than or equaI to seven digits. See the counter sets and dec i s i on. I f the comb i nat i on I ock a I arm words must f i rst enter a password to unIock the input after unlocking code can unIock. [Key words ] password Iock PLC I adder d i agram
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