STMicroelectronics — IIS2ICLX Digital Inclinometer

The IIS2ICLX from STMicroelectronics is an accurate, low-power, two-axis digital inclinometer for use in applications such as industrial automation and structural health monitoring. The inclinometer features a programmable machine learning core and 16 independent programmable finite state machines which help edge devices to save power and reduce the size and frequency of data transfers to the cloud.

Based on MEMS accelerometer technology, the IIS2ICLX inclinometer has a selectable full scale of ±0.5 g/±1 g/±2 g/±3 g and provides outputs over an I2C or serial peripheral interface. Embedded compensation maintains stability to within 0.075 mg/°C over the operating-temperature range of -40°C to 105°C. This ensures high accuracy and repeatability even in fluctuating ambient temperatures.

The IIS2ICLX programmable machine learning core integrates artificial intelligence algorithms, for example for detection of the tilt angle, to reduce the processing burden at the host controller and to lower system-level power consumption.

Low noise density of 15 μg/√Hz enables high-resolution tilt sensing, as well as sensing of low-level, low-frequency vibration, as required when monitoring the health of large structures such as wind turbines, bridges and skyscrapers. Affordable, battery-powered MEMS tilt sensors containing the IIS2ICLX enable many more structures to be monitored than has been economically viable using earlier, more expensive technologies.

The combination of high stability and repeatability, high accuracy and high resolution also makes the IIS2ICLX well suited to industrial use cases such as: