ST’s Infrared sensors (IR sensors) have been designed to accurately detect object movements and sense human presence by measuring the IR radiation of objects within their field of view.
There are several different technologies to support IR-based sensors, and ST offers the TMOS IR sensor solution to detect human or object presence and movement detection with high accuracy and low-power consumption, directly with a digital interface.
TMOS IR sensor applications
ST’s TMOS IR sensors enable various use cases detecting human or object presence/absence and movement around us.
- Smart home/building
- Presence/Motion Detection
- Presence/Motion Detection
- Energy saving
- Presence/Motion Detection
- Energy saving
- Presence/Motion Detection
- Energy saving
What is a TMOS IR sensor and how it works
TMOS stands for Thermal MOS. The sensor is fabricated with the unique technology of the CMOS-SOI process. The TMOS works by integrating the IR radiation emitted by objects in its field of view (FoV). This radiation reaches its MEMS-thermally-insulated gate, realized with the ST state-of-the-art MEMS technology.
Infrared sensor types
ST’s Infrared sensing technology is based on a thermally isolated MOS transistor array: IR radiation incident on gates can bias the MOS transistors which can be used to remotely sense temperature of objects or people. This innovative technology offers many advantages to system designers since it shows much greater sensitivity with respect to known and competitive technologies like PIR and capability to sense non-moving targets. These two key benefits enable new applications and permit significant system cost reduction, removing, for example, IR concentrators like Fresnel lenses.
Key benefits of ST’s TMOS IR sensors
- Presence detection for both stationary and moving objects
- No need of Fresnel lens to detect objects less than 4 meters
- Lower power consumption with embedded SMART algorithm
- Small package
- Digital interface
Featured Videos
Learn about the two complementary presence-detection sensor technologies from ST: Thermal-MOS and Time-of-Flight, aimed at making your devices more intelligent and power efficient.
