Design and fabrication of a dual-axis inclinometer with a range of ±90 degrees and an accuracy of 0.1 degrees

In this paper, a dual-axis inclinometer based on a micro-machine chip is introduced. The main purpose of this paper is to present a high-speed inclinometer with a wide measurement range and high accuracy for use in self-leveling systems. The inclinometer can measure the slope of the ground and generate the information of the slope in each direction as 11-bit digital data. The generated digital data is sent to the outside of the chip using the traditional SPI protocol. The part number of the chip is SCA100T-D02, which is controlled by an ATMEGA 32 microcontroller. The entire inclinometer circuit is placed inside an aluminum box and can be installed on any surface. The test results are shown that the proposed inclinometer can measure the slope of the ground with a speed of 18 Hz in both horizontal and longitudinal directions, with a range of ±90 degrees and an accuracy of 0.1 degrees. The operating temperature range of the inclinometer is from -40 to 125 degrees Celsius, and the slope information can be seen on a 4×20 display. So, this inclinometer can be used in a wide range of industrial, agricultural, etc. equipment.