ATM safe electronic combination lock control system based on ARMV7 architecture

Abstract

In view of the mechanical locks used in the financial industry can no longer meet the needs of security and reliability of banking now, in combination with liaoning university julong group product solutions are put forward, new ATM safe lock system is designed to meet the requirements of julong co. LTD. This new type of ATM safe lock system was composed of three parts which are respectively electronic combination lock host, hand-held set intelligent key and host computer (PC) management center. The lower computer is composed of Cortex-M3 series MB9AFB44L processor module, fingerprint identification module and 2.4G wireless module. Bank personnel who adds money is authorized operating authorization by the integrated management system of upper machine, sending a signal to notify the hand-held MCU to send packets in the authorized time after verification of hand-held fingerprint identification module, and the packets are also passed into combination lock host through 2.4G wireless module. When packets are received, combination lock host will compare and extract in advance, and ID number of hand-held device will be verified first. The contents of the packet will be extracted if the ID is meeting the permission scope, and the unlock password in the package content and the authorization record time are recorded at the moment, which is going to be matched with the password generated by combination lock host. The host will directly drive electromagnetic equipment to play the lock tongue if the password is correct. The whole process of verifying the unlock password must be done within the scope of authorization time, generally half a day or a day, which is determined by the bank unit. That is to say, such a practice must be carried out within the control of management system. The lock is verified by actual operation in the bank that it can effectively improve the security of Bank ATM safe electronic password system, and it has a profound historical significance to promote the development of bank ATM safe electronic combination lock industry.