Prototype of Building Monitoring System Using Vibration Sensor Based on Wireless Sensor Network

The building is a critical civil infrastructure for human life, so it needs maintenance. One way of maintenance is to monitor the condition of the building regularly so that it can minimize early damage and use can last as planned at the beginning of manufacture. The monitoring process can be done manually, but it is less efficient considering the increasingly advanced technological developments. Wireless sensor network technology can be used to monitor this because it does not require a wire loop, and data transmission is carried out wirelessly where sensors have been placed in several locations. Therefore, a prototype was tested using a vibration sensor (SW-420) which detects vibrations. The protocol used is the ZigBee protocol (802.15.4) with a mesh topology. The results of the tests that have been carried out are that distance dramatically affects. The RSSI parameter is influenced by the distance, namely, the farther the distance between the transmitter and receiver, the smaller the RSSI value, which means the signal is of poor quality, and vice versa. This result is evidenced at a distance of 4 m RSSI average of -75.7 dBm and a distance of 16 m RSSI average of -81.7 dBm.