Millimeter wave radar sensor module detects human presence sensing

      2022-07-19 759

      The AIoT millimeter wave radar sensor module can detect human presence sensing solutions. With the advent of the 5G era, AIoT has ushered in an explosion of intelligent upgrades of the Internet of Things with the increasing development of human-computer interaction. The microwave radar human sensor of the IoT perception layer undoubtedly plays an indispensable role in the realization of the IoT intelligent scene. With the help of microwave radar sensors, people can detect the movement of objects, so as to realize functions such as light on when people come, intelligent linkage, and scene definition. It is widely used in smart lighting, smart home, smart home appliances, smart security and other fields.

      Millimeter wave radar sensor module detects human presence sensing

      But in some special application scenarios, in addition to human motion sensing, people often have higher demands.

      Do people need to turn off the lights when they are in the hall, lying on the sofa and not moving?

      Can it accurately determine whether someone is at home/leaving home, so as to automatically execute the scene settings of smart devices at home?

      Can the sensor desk lamp beside continue to be turned on only with the slightest movement of a finger on the keyboard in the office?

      In hotel rooms, can you accurately judge whether the guest in the room is leaving or resting, so as to decide whether to turn off the air conditioner to save energy?

      In order to meet the above needs of the market, as a global advanced AIoT millimeter wave radar sensor module manufacturer, it has launched a human body sensing solution that can detect breathing!


      The presence sensing solution is developed based on our mmWave radar sensor module FR58L. FR58L is a newly launched fully integrated radar sensor chip, which integrates high-performance radar transceiver and single-chip MCU. It is rich in resources, powerful in performance, and rich in algorithms. It can be connected with other master controllers or sensors, and can also be used as master controllers. Due to the super-radar sensing performance and professional signal processing capabilities, the presence sensing solution developed by us based on FR58L can filter clutter interference through algorithms, and at the same time detect micro-motion and even breathing signals, to realize the real presence of the human body.


      Implementation process

      The range of human respiration and heartbeat activity is small, and the radar signal is very weak, but it is very regular. To achieve human respiration detection, it is necessary to extract regular signals from extremely weak signals. FR58L has good performance and strong sensitivity, and can be detected in the absence of human activity. Weak human breathing signal, FR58L has a built-in high-performance processor, the radar signal can be processed by FFT and then transferred to the frequency domain, and then the breathing characteristics can be extracted and confirmed.


      Millimeter wave radar sensor module application scenarios

      1. Smart hotel room energy-saving management system

      2. Smart home management system

      3. Office lighting energy saving management system

      4. Healthcare system


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