Application of Fuzzy Control on Anti-Theft Detection System—Microcontroller Circuit Module with G-Sensor

• Main Authors: Sheng Yen, 嚴升
• Other Authors: Chien-Yu Lu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/43ug3v

碩士 === 國立彰化師範大學 === 工業教育與技術學系 === 101 === At present Anti-theft devices which mostly use Infrared rays sensor or reed switch sensor to detection and video surveillance through cameras. They are useful, but they are very expensive. These devices have low degree of freedom and dead space, so thieves have more chances to steal something. In case, this study will develop a microcontroller circuit module, which contains microcontroller, g-sensor and wireless transmission interfaces. It can improve above-mentioned these faults and make the most home protection of effectiveness. Anti-theft detection retrieved gravitational acceleration value from the g-sensor, then converted gravitational accelerations to angle values by the microcontroller operation. Finally, using wireless transmission interface sends angle values to PC terminal surveillance. Microcontroller circuit module will be placed on the valuables which needs the anti-theft devices. When the object has changed, module will immediately send the change of angles to the computer client. The client computer monitoring software will show the variational angles of the object at the same time. The variational angles will determine the items as mild, moderate or vigorous shaking in circumstances through the fuzzy control. If there is an abnormal condition occurs, the PC terminal monitoring software will respond immediately. Meanwhile it will describe the shaking situation in a news flush and e-mail to the user automatically and save the changes value to understand the current states of object. Therefore, we can reach the anti-theft goal through microcontroller circuit module.