| Summary: | 碩士 === 國立高雄應用科技大學 === 電子工程系碩士班 === 101 === Traditional rolling door control system of remote controller, through scanner for frequency scan soon to on will is crack, security insufficient, this to security and friendly sexual to consider, made has smart rolling door safety control system. System schema contains Bluetooth module, and single chip control module, and memory module and smart phone combined, to Bluetooth transmission signals, smart phone for sent end, rolling door for receives end, for reached more security of mechanism set has two security, first security protection: For avoid in specific band by other noise interference, sending and receiving transfers data at both ends after a very short period of time, and switch to another frequency, second security protection: combined smart phone program feedback coding, set specific coding in rolling door system chip Shang, again tie phone program end specific coding, phase meet to using smart phone control rolling door switch, to feedback coding do for protection mechanism, to reached more security of purpose.
Nowadays the rolling door controlled by mean of wireless radio is ordinarily applied. The conventional remote control of wireless radio includes three different types, binary code、 tenary code and rolling code. For binary code、 tenary code , It can be easily decoded by spectrum and remote multi-band scanner. The multi-band scanner can scan four-set codes per second. It only spends 64 seconds max. to decode a binary code module, tenary code model only spends a half of hour. For rolling code chip, it is also possible to easily unauthorized duplicate or spread out while unethical businessman implements a duplicate of remote control for you. In conclusion, the security of conventional wireless remote control is obviously not enough and consequently threaten life and propety. Conducted under the consideration of all-time safety and daily convenience, this research brings forward a smart door-control system. It is framed with the Bluetooth module, SOC control module and smart phones, and the main system works with the signal transmission via Bluetooth – the mobile phones set as the sending end, and the rolling door as the reception. When the Bluetooth Frequency-Hopping Spread Spectrum (FHSS) is synchronized, both the transmitter and the receiving ends of a specific type of narrow-band radio waves will start transmitting signals. In order to avoid noise interference in a particular frequency band, after sending the data for a very short period of time, both the transmitter and reception ends will also switch to another band as the first safety protection mechanism. The second security precaution is built upon a Feedback coding which fulfills the traditional radio-remote control’s purpose of protection. Having set a group of feedback coding in the cell phone program, a two-level code-corresponding measure will have to be completed in order to control the rolling door switch with the phone: first with the a specific encoding in the smart door control system of SOC, and second the mobile phone program client-specific coding Consistent.
Keywords: Radio, rolling door, Bluetooth
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