Lighting radar sensor human body sensor principle detail

I. Introduction

With the continuous development of science and technology, the application of human body sensor in daily life and work is more and more extensive. Among them, the human sensor of lighting radar sensor plays an important role in intelligent lighting, security monitoring, human-computer interaction and other fields due to its unique advantages, such as non-contact detection, high sensitivity, fast response, etc. This paper will introduce the working principle of human body sensor of illumination radar sensor in detail, and analyze its advantages and precautions in application.

Two, lighting radar sensor human sensor principle

The human sensor is developed based on microwave radar technology. The core principle is to irradiate the human body with microwave pulses, and calculate the speed, distance and direction of the human body by detecting the reflected microwave signal. Specifically, the sensor includes two main parts: a transmitter and a receiver.

Transmitter: emits microwave pulses of a certain frequency, these pulses travel through space, and when they encounter the human body, some of the microwave energy is reflected back.

Receiver: receives the reflected microwave pulse signal and converts it into an electrical signal for processing.

In the process of processing, by analyzing the time, phase and other information of the reflected microwave signal, the activity of the human body can be obtained, such as moving speed, distance and direction. At the same time, through the continuous monitoring and analysis of this information, the human body's behavior pattern can be judged, such as walking, static and so on.

In addition, the illuminated radar sensor body sensing sensor also has some other advantages. For example, because it adopts non-contact detection mode, it will not be affected by environmental temperature, humidity and other conditions, and has high stability and reliability. At the same time, because of its wide detection range, it can detect multiple targets at the same time, which is suitable for monitoring in large space.

3. Application fields and advantages

Intelligent lighting: By using the lighting radar sensor human sensor, the brightness, color and other parameters of the light can be automatically adjusted according to the activity of the human body to achieve the effect of intelligent lighting. At the same time, it can also automatically adjust the lighting parameters according to the time period, weather and other factors to achieve the effect of energy saving and environmental protection.

Security monitoring: In the field of security monitoring, the lighting radar sensor human sensor can be used to monitor the activity of the human body, such as whether there is abnormal behavior, whether alarm is needed. At the same time, it can also be used in combination with other sensors to achieve more comprehensive security monitoring.

Human-computer interaction: In the field of human-computer interaction, the lighting radar sensor human body sensor can be used to identify human gestures, posture and other information to achieve the interaction between people and machines. For example, in a game, it is possible to realize the movement control of the game character by recognizing the player's gestures; In the field of education, students' learning effects can be evaluated by identifying their posture.

Energy saving and environmental protection: By using the lighting radar sensor human sensor, intelligent control of the lighting in public areas can be achieved, such as automatically dimming the brightness of the light during the period of small traffic, so as to achieve energy saving and environmental protection.

Smart home: In the field of smart home, the lighting radar sensor human sensor can be used to monitor the activities of family members, such as the movement track of the elderly, rest time, etc., so as to provide more personalized services for family members.

4. Precautions

Although the illumination radar sensor has many advantages, some problems still need to be paid attention to in practical applications. For example, it is necessary to avoid blocking the reflection path when installing the sensor, so as not to affect the detection effect; At the same time, it is necessary to pay attention to the waterproof and dustproof performance of the sensor, so as not to affect its normal work in harsh environments. In addition, because there may be differences between different models of sensors, it is necessary to pay attention to its technical parameters and scope of application when purchasing and using.

V. Conclusion

As an advanced non-contact detection technology, human sensor has a wide application prospect. In practical applications, it is necessary to select the appropriate model and technical parameters according to the specific needs, and pay attention to the problems in installation and use to ensure that it works normally and gives full play to its advantages.