新闻资讯
The 5.8GHz FMCW respiration and ranging radar sensing solution of Airtouch Technology helps accurate human presence perception!
- Time of issue:2022-04-30 15:57
- Views:
(Summary description)The 5820 breathing version chip of Airtouch Technology has excellent radio frequency performance and built-in high-performance MCU, which can effectively extract the weak signals of the human body such as breathing, chest expansion, and slight shaking. The advantage of the 5.8GHz FMCW presence detection scheme of Airtouch Technology over high-frequency radar is that it has a larger coverage area and fewer human sensors can be deployed in the same space. At the same time, compared with the traditional 5.8G CW (continuous wave) presence detection scheme, it provides distance information, which can better avoid false trigger interference outside the range.
The 5.8GHz FMCW respiration and ranging radar sensing solution of Airtouch Technology helps accurate human presence perception!
(Summary description)The 5820 breathing version chip of Airtouch Technology has excellent radio frequency performance and built-in high-performance MCU, which can effectively extract the weak signals of the human body such as breathing, chest expansion, and slight shaking.
The advantage of the 5.8GHz FMCW presence detection scheme of Airtouch Technology over high-frequency radar is that it has a larger coverage area and fewer human sensors can be deployed in the same space. At the same time, compared with the traditional 5.8G CW (continuous wave) presence detection scheme, it provides distance information, which can better avoid false trigger interference outside the range.
- Time of issue:2022-04-30 15:57
- Views:
Information
With the rapid development of smart lighting, smart home, smart home appliances, smart security, etc., people's requirements for human body detection are also increasing. From motion detection, micro-motion detection, and now breathing detection, more chip solutions have also been proposed. high demands. It is necessary to effectively detect the presence of human body information, and to avoid false triggering interference of curtains, vegetation, and fans as much as possible, and also need more accurate distance information and a larger detection range.
01
Advantages Of The Airtouch FMCW Solution
Airtouch Technology has innovatively launched a 5.8GHz microwave radar FMCW (Frequency Modulated Continuous Wave) solution, which can achieve:：
The ranging function of the human body in the state of motion.
Lifebeing detection with ranging
function.
The 5820 breathing version chip of Airtouch Technology has excellent radio frequency performance and built-in high-performance MCU, which can effectively extract the weak signals of the human body such as breathing, chest expansion, and slight shaking.
The advantage of the 5.8GHz FMCW presence detection scheme of Airtouch Technology over high-frequency radar is that it has a larger coverage area and fewer human sensors can be deployed in the same space. At the same time, compared with the traditional 5.8G CW (continuous wave) presence detection scheme, it provides distance information, which can better avoid false trigger interference outside the range.
02
Airtouch FMCW Solution Parameters
Product Parameters
03
Implementation Principle
Principle of ranging
Frequency Modulated Continuous Wave (FMCW) refers to the emission of a continuous signal with a certain bandwidth and a linear change in frequency. This kind of signal is called a Chirp signal. FMCW can test distance, speed, etc.
Principle of motion detection
By detecting the amplitude of signal change at different times, when the degree of change exceeds a threshold and is within a given distance, it is determined that a moving target exists.
Principle of micro-moving detection
Anti-jamming filtering is performed on the signal, and based on the FMCW distance unit, the phase/amplitude change degree with time is counted for each distance unit. If the change degree exceeds the threshold, it is determined that the micro-moving target exists.
Principles of breath detection
By accumulating the signals of a given distance unit for a long time (several seconds to tens of seconds), the slow signal changes are extracted, and when the signal characteristics match the characteristics of human breathing (such as 12-20 times per minute, etc.), it is determined to be breathing exist.
04
Application Scenarios
Smart Home Lifebeing Sensor
Home Lighting
Smart Hotel Human Presence Sensor
Hotel Card-free Electricity
Office Lighting
Television
Desk Lamp
Air Conditioner
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