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Smart Home Millimeter Wave Radar Module Human Breath Sensing Technology

2022-09-24 877

Smart home millimeter wave radar module human respiration sensing technology, in the current critical period with the digital transformation of all walks of life, any new technology may become a new infrastructure. Any innovation gene is born on the basis of old things and often only becomes empty talk, re-exploring new applications of old things, finding certainty in unpredictable new times, in order to understand innovation genes more thoroughly.

Smart Home Millimeter Wave Radar Module Human Breath Sensing Technology

Millimeter-wave radar modules light up thousands of life-scenario applications


In the new era, traditional products and applications are being reborn. When it comes to radar, it is impressive that radar has performed well in the military field, but with the development of autonomous driving and intelligent safety in recent years, people have a new understanding of millimeter-wave radar. Millimeter waves have the innate characteristics of high precision, high sensing, and detection. They can not only detect objects, but also provide information such as distance, speed, and angle. At the same time, millimeter waves can penetrate specific materials such as plastics, wall panels, and clothing, and are not affected by environmental conditions such as rain, fog, dust, and snow. Therefore, the application of millimeter-wave radar modules in daily life has blossomed everywhere.


Since the interaction of smart home, smart hotel, and senior housing equipment in 2019, the market has a strong demand for home privacy and the accuracy of linkage. Millimeter wave radar products can solve market pain points after reducing costs.


China's population has 25% of the elderly, and the pension problem has become hot. In the field of elderly care homes, it is necessary to sense the absence of people at home, fall monitoring, respiratory data, sleep quality and other physiological tests. In addition, the protection of personal privacy is also worthy of attention. At present, in a family, these have gradually become rigid needs, but they have also become pain points, and technological breakthroughs are urgently needed to fill the gap. Millimeter wave radar module products are not limited by light and privacy, and can judge whether there is a person by measuring breathing. Due to the penetrability of radar, it can penetrate clothes, glass and wooden boards to perceive; at the same time, it can also judge the elderly by measuring breathing It has an irreplaceable function for some sudden time alarms. Since the millimeter-wave radar module performs algorithms through the Doppler effect and motion state, the continuous iteration of the algorithm can realize functions such as statistics and fall detection, and truly and effectively meet the needs of family care for the elderly.


Why choose mmWave radar


At present, in smart home scenarios, there are three common human sensing sensors: infrared, ultrasonic and millimeter-wave radar sensors. Due to different technical characteristics, product design methods are often different. For example, since infrared and ultrasonic users can only choose glass shell materials, the latter can not package the shell, the millimeter wave radar module is very different from the other two in the application of human body sensing in the smart home. One is that it is more sensitive to the static induction of the human body, and the other is that it has high environmental flexibility and is not affected by temperature, brightness and humidity. Third, the appearance design is more beautiful, it can be hidden in the shell for detection, and there is no need to drill holes on the surface of the product during installation.


Specific to practical applications, smart home contact physiological detection methods include bracelet watches, smart mattresses, smart belts, non-contact physiological detection methods include smart cameras, infrared sensors, etc. Through research on different users, it is found that these applications are not as imagined So good, these methods expose many problems in practical application, and the market desperately needs new technologies to break the game. While breathing detection is a scenario in the smart home and a small market, for many users it's just a need. This is also the original intention of our millimeter-wave radar - focusing on the application of human millimeter-wave radar modules, and becoming a high-tech company that provides breathing monitoring, fall alarm, sleep monitoring and vital sign detection.


At present, the radar emits electromagnetic waves to irradiate the human body, and after receiving the signal processing, separates breathing and vital information, basically eliminates various data acquisition and transmission interference, outputs vital sign parameters, motion range parameters and sums, giving full play to the technical value of millimeter-wave radar.


At present, we have mastered the three major technical advantages of the breathing algorithm of the millimeter wave radar module: human body target locking technology, anti-jamming algorithm in motion state, and breathing and heartbeat compatibility between different human bodies. Taking the human body target locking technology as an example, our algorithm effectively distinguishes the difference between the static human body and the background, and avoids the numerical drift caused by the interference of electromagnetic wave background reflection; in terms of measuring distance, by locking the human body target, the interference of surrounding movements is effectively avoided. It is precisely because of the abundance of algorithms and the difficulty of filling, the interference of infrared and laser products mentioned above that it is difficult to accurately collect data.


In order to make the product close to the scene, improve efficiency, highlight efficiency, and save costs, we also provide a variety of ecological modes in terms of functional improvement and experience simplification. The breathing radar product includes three different postures: front, back and double measuring radar. It can be installed at the head of the bed, under the mattress and on the table top. According to the market application, it provides 485 interface, wifi interface, 4G/5G communication module. In order to facilitate the secondary development of users, a variety of breathing, fall alarm, and human development kits have been introduced. Users can secondary develop radar output and assign various parameters to form more suitable customized products.


More users of early smart home applications are enthusiasts, who can accept imperfect products, but later smart home application users are the public, who need reliable and practical products, and what they really need is complete ecology and services system. Compatibility, integration, and more thorough vertical applications of millimeter wave radar module technology with applications such as home IoT, health pensions, community services, etc., we hope to do something different in this technology.


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