Design And Development Of Electronic Module For Intelligent Combination Lock

With the rapid development of embedded technology,smart terminal devices are gradually entering ordinary households,providing great convenience for people's daily life.As an important security barrier for smart homes,smart door locks have undoubtedly attracted widespread attention.The main difference between a smart electronic lock and a traditional mechanical lock is that the smart lock has a wealth of electronic modules.In this paper,a microcontroller is used as the control core,and various peripheral sensors and functional modules are combined to design an electronic module of an intelligent password lock according to actual needs.The main work of this article is to design an electronic module that takes into account both safety,convenience and product cost.The paper first analyzes the development history of smart locks and the current development status at home and abroad,and further plans the logic functions required by electronic modules,Developed a control system program with ARM as the core.This article mainly uses the combination of the hardware circuit of the electronic module and the software system to realize the planned control scheme.First,the electronic module hardware system with the control board as the core is designed,and the prototype is made to carry out the necessary basic tests.Secondly,a program is written on the basis of the hardware system to design the software system,and the three core verification methods of fingerprint,magnetic card,and digital password and other ancillary supporting functions are realized through the combination of software and hardware.Later,in addition to the main functions,a Bluetooth communication module was designed for the electronic module,and a dedicated mobile phone application was designed.The user can conveniently check the user log of the smart lock through the mobile phone,and can realize the remote unlocking through the temporary dynamic password generated on the mobile phone.Finally,based on the realization of all the functions planned in the early stage,the main performance indicators of power consumption,electrostatic protection,anti-electromagnetic interference,etc.of the electronic module are optimized according to the industry standards of smart locks,so that the smart lock electronic module designed in this paper Groups can adapt to actual needs.After completing the software and hardware system design and perfecting the main performance indicators,the thesis conducted an overall test of the prototype of the smart lock electronic module.The three core verification functions and key performance indicators were tested separately,and the experimental results detected showed that they met the expected design goals,indicating the engineering application value and market prospects of the system.