The Electronic Locks Controlled Indoor Safe Based On GPS

Indoor safe is a container that is widely used and has the functions of conservingvaluables and guarding against theft. Though the lock control system of the safe itself is veryfirm and the cabinet materials are being upgraded, the safe can be still stolen because of itssmall volume. When the safe is carried away entirely, the lock control system performspractically no function. Thus, the function of guarding against theft is limited and losses arecaused. In order to solve the problem to the ground, an “indoor GPS electronic lock controlsafe box” is in order to give full play to the GPS location information from satellite is noteasily copied, which could also receive the location data safely in the room, and could makethe GPS location information as a “invisible key” to control the “tangible locks” of the indoorsafe come true. Therefore, the indoor safe can be guaranteed to be opened safely in aappointed place.This installation is devised that it can’t receive normal GPS satellite signal and receiveno GPS satellite signal in the default lock area. The idea of design is adopted that is “doubleantenna”, combine with the GPS satellite navigation technology, the embedded microcontroller controller electronic combination lock and the advantages of modern electronictechnology and so on. Develop “indoor GPS electronic lock control safe box” to get GPSlocation. information in door and outside, compared with the position of the default safelocation data. From the results of the comparison, micro controller to send out thecorresponding instruction of safe electronic combination lock.The article analyzes the potential safety hazard and disadvantages of traditional indoorsafe, expounds the practical significance of indoor GPS electronic lock control safe systemdesign, introduces certain major techniques related to the project, relates and discusses thehardware circuit design as STM32chip as the control core and other module circuit design,describes in detail the flowchart of system software including GPS tasks, wireless datatransmission and the main program, and finally analyzes the debugging process of the systemand does test analysis to its function and qualification. The results show that the GPSelectronic lock control indoor safe can achieve the functions of being opened in the indoorpresumptive area, abnormal alarm and automatic locking. It also can reach the correspondingqualification. In the end, the article forecasts the function expansion and practical applicationof the system.This article adopts design is “double antenna”, it is effective to solve the problem thatreceive GPS satellite signal abnormally indoor and receive no GPS satellite signal in thedefault lock area. The sample of “indoor GPS electronic lock control safe box” has beendeveloped, did the system debugging, function testing and environmental adaptability test.According to the result,“indoor GPS electronic lock control safe box”can operate successfully to achieve abnormal alarm and automatic lock, only be opened in the default lock area. Thetemperature is range from-20℃to60℃when the system operates normally. To satisfy theexpected requirement, verify futher the idea of “double antenna” and apply “invisible key”directly to control the “tangible locks” is right, feasible and worthy of be study deeply.Finally, Look into the distance to extend the function of the system and practical application.