Návrh a realizace bezdrátového senzoru náklonu

Abstract

This bachelor's thesis presents the design and implementation of a wireless tilt sensing module for long-term inclination monitoring using IQRF technology. The introductory part analyses tilt measurement methods, commercial inclinometers, and wireless IoT technologies. The proposed hardware integrates the ADXL355Z accelerometer and HMC5883L magnetometer, controlled by an IQRF TR-76D transceiver in an 868 MHz mesh network; the printed circuit board also includes a footprint for the optional LIS2DW12 accelerometer intended for motion detection. The electronics are encapsulated in a 120 mm × 50 mm enclosure with battery and optional solar power supply. Firmware implemented as a Custom DPA Handler manages I2C data acquisition and wireless transmission; pitch, roll, and tilt-compensated azimuth are computed by a Python script on the host system. Nordic PPK2 testing confirmed an average current consumption of 1.12 mA at a 60 s measurement interval, and the integrity of the measurement chain was verified by a measured gravitational vector magnitude in the range of 0.999–1.034 g.