[Editor's Note] Motion sensors are sensors that detect the movement of objects. Recently, they have gone beyond simple reactions to recognize even delicate human facial expressions, and are being used in various fields such as home appliances, video, and industry. These motion sensors come in various types such as ultrasonic, laser, and microwave, and can measure the distance to an object or measure speed. Recently, the use of 60GHz radar sensors has become widespread for intelligent motion sensing applications such as lighting control, automatic door opening and closing, and security alarms. In this regard, this paper presents Infineon 's ' XENSIV™ ' 60GHz radar sensor .We have prepared a place to look at the features of the radar sensor through 'fs.p.radar.2122&utm_content=e4ds&utm_term=korean+">BGT60LTR11AIP'.

■ Radar sensor , providing human senses to objects

Radar sensors give objects a human sense of touch, making our lives easier.

In particular, radar sensors can detect the smallest kinds of movements. This gives human senses of touch, sight, and hearing to smart devices, allowing them to react or interact with movements anytime, anywhere.



These sensors also provide smart devices with the advantage of saving energy.

Of all the sensing technologies, radar in particular offers the most opportunities.

Radar can detect the smallest types of movement, including vital signs.

No need to wave in front of a motion triggered lighting system or similar device.

Radar can sense presence and track distance, speed, breathing and heart rate, gestures and people's movements.

In addition, it has adjustable performance parameters, is versatile and flexible, and can detect through obstacles.

Additionally, radar can penetrate all non-conductive materials, and radar sensors can be hidden within the end product, providing flexibility in product design.

In particular, the radar operates in the sun, darkness and all other lighting conditions, and is robust to fog, dust and temperature.

Additionally, radar sensors are maintenance-free and environmentally resilient.

Radar isn't new, but what it can now do enables entirely new ways of sensing the world.

■ Better detection ability than PIR

Radar sensors enhance customer experiences by recognizing people around them in a variety of applications.

Existing motion detector solutions such as PIR, ultrasonic, ToF or camera-based solutions can overcome their critical shortcomings: sensitivity, detection through obstacles and size.

Infineon's radar sensor, 'A direct comparison of the .infineon.com/cms/en/product/sensor/radar-sensors/radar-sensors-for-iot/60ghz-radar?utm_source=e4ds&utm_medium=referral&utm_campaign=202111_ap_en_pss_pss.ap.rfs.p.radar.2122&utm_content=e4ds&utm_term=korean+">BGT60LTR1AIP' with existing motion detector solutions demonstrates the advantages of RADAR over PIR.

In a comparison of eight test scenarios conducted by Infineon: △Lateral movement relative to the sensor △Radial movement relative to the sensor △Lateral movement with winter clothing △Radial movement with winter clothing △Fan heater (heat source) in the vicinity △Sensor covered with paper towel (< 0.1 mm) △Partially covered field of view (coat hanger) △Small movements while sitting at a desk, the results show that, beyond 'perfect conditions', PIR-based motion detectors show weaknesses while the BGT60LTR1AIP performs reliably.

Looking at applications that benefit from radar sensors, it can contribute to privacy and energy conservation on monitor screens. You can save energy, protect personal information, and minimize the response time for facial authentication by adding functions such as automatically turning the screen off and on when you leave it.

In lighting, a radar sensor can detect a user next to a reading lamp when it enters the field of view and automatically turn it on, and when the user moves out of the field of view, the lamp can be turned off, saving energy and improving the user experience.

In the safe zone, motion detection or movement direction, distance, etc. activates the security camera/system or confirms the signal as a trigger of the PIR sensor. Additionally, fewer false alarms are triggered, which means the camera is less likely to activate, and it can even automatically contact the owner in an emergency if they accidentally fail to contact the owner.





■=202111_ap_en_pss_pss.ap.rfs.p.radar.2122&utm_content=e4ds&utm_term=korean+">BGT60LTR1AIP, the most integrated, smallest, and simplest motion sensor solution

Infineon's BGT60LTR1AIP , a representative product of radar sensors, can replace an actual PIR (infrared motion detection sensor). The first low-cost radar sensor for motion detection without a microcontroller is a Doppler radar with integrated analog baseband and detector, with the ability to extend range by adding an MCU.

It has a detection range of up to 7 m in autonomous mode, a field of view of 80°, power consumption between 1.5 and 9 mW, and provides direct output to movement and direction of movement.

It can be applied to various applications such as surveillance cameras, alarm systems, smart homes, energy saving, lighting, toilets, televisions, and laptops.

Additionally, the product allows changing the MMIC settings for up to 16 different states using four preset input pins.

In radar operating mode, autonomous, pulse and SPI modes can be selected, and detector sensitivity can be selected from 16 sensitivity levels.

The signal hold time after detection can be selected from 16 hold times ranging from 0.1 seconds to 30 minutes, and the device operating frequency can be selected from 4 levels ranging from 61.1 to 61.4 GHz.

In SPI mode, raw radar data can be extracted for signal processing on a PC or external microcontroller device (MCU). Additionally, Infineon's toolbox supports the platform with demo software and a radar graphical user interface (Radar GUI).