On May 14, 2021, the 11th Songshan Lake China IC Innovation Summit Forum will be held in Songshan Lake, Dongguan. In this forum, our company Airtouch Technology was invited to attend. This is also our company's two consecutive years of being invited to participate in this technology exchange feast, which is known as a weather vane in the AIoT industry. Last year, our company launched the world's first uA-level microwave radar sensor AT5815, setting off a wave of ultra-low-power radar applications in the industry. At the Songshan Lake Forum this year, our company Airtouch Technology once again ceremoniously introduced the new product independently developed by our company: a new generation of human presence sensor chip AT58MP1T1RS32A (hereinafter referred to as AT5820) that can detect breathing.

Zhang Zhenwei, Vice President of Airtouch Technology Marketing, gave a speech on the spot

AT5820 is the world's first radar SoC sensor chip based on 5.8GHz. It integrates high-performance radar transceiver and 32-bit MCU on a single chip. It has rich resources and powerful performance. It can be interconnected with the main control or transmission chip. Can be used as a master MCU. Thanks to the chip's super radar sensing performance and professional signal processing capabilities, AT5820 can detect micro-movements and even breathing signals while realizing human motion detection, thereby realizing real human lifebeing sensing.

According to Zhang Zhenwei, vice president of marketing of our company, the AT5820 chip uses an all-silicon integrated sensor + 32-bit MCU, breaking the traditional sensor that requires an external MCU to achieve sensor functions. In addition, AT5820 can realize mixed real-time monitoring of motion detection, micro-motion detection, and breathing detection, realizing real presence perception, and high anti-interference technology to solve fan, air-conditioning and other interference. AT5820 is developed based on 5.8GHz, which has more performance advantages than 24GHz and 77GHz chips.

AT5820 breathing detection principle diagram

AT5820 site measured map

Through the live broadcast of AT5820 breathing and heartbeat signal detection demonstration, it can be found that when the experimenter is holding his breath, he can see obvious changes in the signal. According to Zhang Zhenwei, vice president of sales of our company, AT5820 has good microwave characteristics and strong sensitivity. It can detect weak breathing and even heartbeat signals when the human body is not moving. In addition, the AT5820 has a built-in high-performance processor, which can transfer the radar signal to the frequency domain after FFT for signal processing, and then extract and confirm the breathing characteristics. It is especially suitable for application scenarios such as hotels, which can realize intelligent upgrades such as card-less power acquisition and energy saving.

At the end of the meeting, Zhang Zhenwei, vice president of sales of our company, showed the product layout of Airtouch Technology's microwave radar chip and radar sensor series chip, and revealed that the follow-up will be launched-high-precision, cost-effective 77G millimeter wave radar chip AT77HP3T4R.