本研究使用RF 無線傳輸製作車輛門禁自動管理系統。系統的主要功能就是把市面上一般主動式手持控制遙控器或磁卡開啟門禁創新改良成被動式免持鑰匙控制遙控器，使人員進出大門更加便利。亦即在門禁出入口設立一個紅外線感測器，當車輛沒有進入發射範圍內，發射器是呈現睡眠待機狀態；而進入訊號範圍內時，會喚醒車內發射器，此時車內的發射器會發出訊號給接收器進行ID 驗證，審核正確才能進出大門，並且在接收主機上自動管理人員的進出記錄。當車輛離開訊號範圍內發射器就自動關閉，進而達到節能及使用便利的目的。

The paper presents an access control and management system geared for automatic garage entrances by using Radio Frequency (RF) technique. The main feature of the proposed system is to replace the otherwise traditional active access control by a passive key control installed onboard the vehicle. To accommodate our new design, door entrances of the garaged are to install a pair of Infrared (IR) sensors in frond and behind the entrance to detect the presence of an incoming vehicle. When the vehicle is away from the range of the IR sensor, the remoter installed onboard the vehicle is rendered in sleep standby mode. When the vehicle enters within the range of IR sensor, the access control system installed at the garage site will send a signal to wake-up remoter onboard the vehicle; as a result, the remoter will issue an authorized Identification (ID) signal to the receiver of the access control and management system. After the ID is validated, meaning the vehicle has the right to entry, the door will be lifted and the event of entrance of the designated vehicle will be recorded automatically in the management system. After entrance, as detected by the IR sensor at the end of the door, the door will be shut off automatically. The proposed solution to access control and management system for garage has the advantages of energy saving while increasing the convenience for vehicle drivers when entering garages.