Human sensing detection method and application of 24GHz radar sensor in smart home

In the current field of smart home, human body sensing technology plays a crucial role. Among them, 24GHz radar sensor, as a commonly used human sensor detection device, has a wide range of application prospects. This article will focus on the 24GHz radar sensor in the field of smart home sensing detection methods and related applications, to help readers better understand how to use this technology to improve the function and convenience of smart home systems.

Part One: Basic principle of 24GHz radar sensor

24GHz radar sensor is a kind of human body sensing device based on microwave technology. It operates at 24GHz and can detect the dynamic changes of the human body in the sensing range by sending and receiving microwave signals. Its advantages lie in its high detection range, fast response speed and strong anti-interference ability.

Part two: 24GHz radar sensor human sensing detection method

1. Human activity detection: By analyzing the changes in the microwave signal received by the sensor, the existence and activity of the human body can be judged. When a human body enters the sensing range, the microwave signal will be reflected and scattered, resulting in changes in the sensor signal.

2. Posture recognition: By analyzing the weak movement and posture information of the human body, the human body can be recognized and tracked. 24GHz radar sensor can detect the movement of the human body, standing, sitting and other actions, so as to realize the recognition of the human body posture of the smart home system.

3. Breath detection: 24GHz radar sensors can also detect human respiratory movements by analyzing small changes in microwave signals. This function can be applied to the elderly health monitoring, infant monitoring and other scenarios in smart homes.

Part Three: Application cases of 24GHz radar sensor in smart home

1. Intelligent security system: 24GHz radar sensor can be used in intelligent security system to realize human activity monitoring and intrusion detection inside the house. When the sensor detects that someone has entered the house, the smart home system can control the camera, alarm and other devices through linkage to give timely security tips.

2. Intelligent lighting system: By combining with intelligent lamps, 24GHz radar sensors can achieve dynamic tracking and lighting control of the human body. When the human body enters the sensing range, the lamp can automatically adjust the brightness and open/close, achieving energy conservation and convenience.

3. Comfort control system: 24GHz radar sensor can be applied to the comfort control system of smart home, such as intelligent air conditioning. When the sensor detects that the human body has left the room, the intelligent air conditioner can automatically enter the energy-saving mode; When the sensor detects the proximity of the human body, the intelligent air conditioner can adjust the temperature in time to provide a more comfortable experience.

4. Smart medical assistance: With the breath detection function of 24GHz radar sensors, smart home systems can play an important role in medical assistance. For example, for the elderly or the sick, the smart home system can monitor their breathing movement and departure from bed in real time through 24GHz radar sensors. Once an abnormal situation is detected, the system can send an alert in time to notify caregivers or medical institutions so that emergency measures can be taken.

5. Smart energy management: Combined with 24GHz radar sensors and smart appliances, smart home systems can achieve smart energy management. By sensing the existence and activity of the human body, the system can automatically adjust the working state and energy consumption of electrical appliances, and realize the rational use and saving of energy.

6. Intelligent access control system: 24GHz radar sensor can be applied to the intelligent access control system to detect the human body entering and leaving the access control area. Through linkage with the door lock system, the system can realize automatic access control without perception, improving safety and convenience.

7. Health management application: In addition to breath detection, 24GHz radar sensor can also measure the human heart rate, body temperature and other information to realize the smart home system to monitor and manage the health status. This has important implications for the health care of the elderly, children and the sick.

8. Intelligent monitoring system: By combining 24GHz radar sensors with smart cameras, smart home systems can achieve comprehensive monitoring of indoor activities. When the sensor detects that the human body has entered the sensing range, the smart camera can automatically track and record, and transmit the real-time picture to the mobile phone or computer, providing all-weather security monitoring.

9. Intelligent passenger flow analysis: 24GHz radar sensors can also be applied to intelligent passenger flow analysis in commercial places. By sensing the entry and exit and activities of the human body, the passenger flow can be counted in real time, and analyzed and predicted, helping businesses to make more scientific business decisions and improve service quality and efficiency.

10. Smart fitness assistance: Combined with 24GHz radar sensor and smart fitness equipment, smart home system can provide personalized fitness assistance. By monitoring the movement and posture of the human body, the system can give real-time guidance and feedback to help users correctly perform fitness exercises and improve the exercise effect and safety.

11. Intelligent lighting scene: Using the human body sensing function of 24GHz radar sensor, intelligent lighting scene control can be achieved. For example, installing sensors in corridors or walkways that automatically turn on lights when they detect a human being approaching; When no one passes for a period of time, the lights are automatically turned off to achieve energy saving and convenience.

Conclusion:

This paper introduces the human sensing detection method and application of 24GHz radar sensor in the field of smart home. By using this technology, the smart home system can realize real-time monitoring and recognition of human activities, posture, breathing, etc., and then realize intelligent security, comfort control, energy management, health management and other functions. With the continuous development and popularization of smart home technology, we can expect 24GHz radar sensors to be more widely used in the field of smart home, bringing more convenience and comfort to people's lives.