Electronic door guarding (knock detection, reminder)

The idea is to use RSL10 with a low-power acceleration sensor and attach it to the back of the door panel. By collecting acceleration information, it can detect the vibration of the door panel caused by knocking on the door and the accelerated movement of the door panel caused by the door opening, thereby recording the events of knocking on the door and opening the door. The BLE function of RSL10 sends status information to the BLE terminal in real time, allowing log viewing and control of other electronic devices, such as wireless doorbells, intrusion alarms and other functions.

The work includes two parts: a wireless sensing unit attached to the back of the door panel (using the RSL10-COIN-GEVB development board) and a mobile BLE terminal (using the RSL10-QFN-EVB development board). The wireless sensing unit is a slave machine and is powered by a 3V button battery; the BLE terminal is a host machine and can be powered by a small lithium iron phosphate or USB. The acceleration sensing unit (RSL10+KX023) attached to the back of the door is used to detect vibration and motion to detect events such as opening the door and knocking on the door. It also interacts with the terminal through information through BLE and can view the log on the handheld terminal. Handheld terminals are also implemented with RSL10. After powering on, it automatically scans the target device and connects to it. After connecting, it obtains the time and date information of the device (which can be modified at this time), and then enters the log interface. The wireless sensing unit and the BLE terminal exchange information through the BLE connection.

If you want to communicate with the author of the design work, you can go to the work release post: http://bbs.eeworld.com.cn/thread-1172779-1-1.html