UWB radar modules sense respiration in next room

April 28, 2015 // By Peter Clarke
UWB radar modules sense respiration in next room
Novelda AS (Kvitesied, Norway), a developer of CMOS impulse radar transceivers, has announced two modules based on its X2 transceivers intended for use in home automation. The company has also raised $12 million in a Series A financing round.

The so-called XeThru technology is a microwave radar system integrated on a CMOS chip that can act as ground-probing radar, a sensor for human vital signs monitoring, personal security, environmental monitoring, industrial automation and robotics. According to reports from about 2011 it is makes use of a design style that does not use synchronous clock-based digital logic and thereby achieves lower power consumption while accelerating processing speed.

The first generaton X1 CMOS transceiver, previously called the NVA6100, has been designed into land mine detectors, snow depth measurement systems, rescue equipment and other applications. The X2, previously called the NVA6201, operates at a lower frequency than the X1 and can therefore look deeper into the ground and through lightweight building materials. It has been in production with foundry TSMC for about a year.

The two sensor modules are the X2M200 respiratory module and the X2M300 presence module both can work at distances of up to several meters and do not require line of sight.

The X2M300 module is intended for smart home automation where its capability for detecting human presence while being integrated into a building’s structure enables hidden, tamper-proof sensing. As well as security and comfort applications, such as the convenient actuation of lighting and environmental controls, this module can enhance home safety, especially for the elderly or people who live alone, using the absence of normal activity to raise an alarm. It has a range of up to about 4.8 meters and an acquisition time of about 1s.

The X2M200 sensor module is designed for respiration monitoring of people of all ages for health and welfare purposes. It is particularly suited for sleep improvement systems and detecting sleep anomalies or other medical conditions. XeThru’s non-contact technology provides a reliable but non-intrusive way to monitor respiration and movement, capturing breathing patterns and frequency without being blocked by cot blankets or other obstacles. The X2M200 has a sensor range from 0.5m up to 2.8m. The acquisition time is about 10s.

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