Microwave radar sensors There are several kinds of human detection sensors

With the continuous development and progress of technology, sensors have become an indispensable part of our lives. Among them, the microwave radar sensor human detection sensor is widely used in security monitoring, smart home, intelligent transportation and other fields because of its high precision, high sensitivity and high reliability. So, what are the types of microwave radar sensors for human detection? This article will be introduced in detail from the following aspects.

First, according to the working principle of classification

Passive inductor

Passive sensors mainly use infrared radiation from the human body for detection. It works by sensing infrared light to determine whether the human body exists. This sensor has the advantages of small size, light weight and low price, but at the same time there are some disadvantages, such as easy to be affected by environmental temperature, humidity and other factors, sensitivity instability.

Active inductor

The active sensor uses microwave radar technology for detection. It transmits microwaves to the human body, and receives the reflected microwave signal, and determines whether the human body exists according to the changes in the reflected signal. This kind of sensor has the advantages of high precision, high sensitivity and strong anti-interference ability, but it also has some disadvantages, such as high cost and high power consumption.

2. Classification by application scenario

Security monitoring field

In the field of security monitoring, microwave radar sensors human detection sensors are widely used in the security monitoring of important places such as banks, museums, stations and so on. Through the detection of the human body, it can realize the real-time monitoring of personnel activities in the place and improve the safety prevention ability.

Smart home field

In the field of smart home, microwave radar sensor body detection sensor is widely used in intelligent lighting, intelligent air conditioning and other systems. It can realize real-time monitoring of indoor personnel activities through the detection of the human body, and automatically adjust indoor temperature, humidity and other environmental parameters to improve living comfort.

Intelligent transportation field

In the field of intelligent transportation, the microwave radar sensor is widely used in the intelligent traffic signal control system. It can realize the collection and analysis of facial information through the detection of pedestrians, and improve the accuracy and reliability of traffic signals. At the same time, it can also be applied to vehicle monitoring, road condition monitoring and other fields.

Three, according to the output signal classification

Digital inductor

The digital sensor uses digital signal output, which has the advantages of high precision, low noise and good stability. It can convert the detected human signals into digital signals, which is convenient for subsequent processing and transmission. Digital sensors generally use RS485, CAN, Ethernet and other communication protocols for data transmission.

Analog inductor

Analog sensor uses analog signal output, which is intuitive and easy to understand. It can convert the detected human signals into analog signals, which can be processed and transmitted through analog circuits. Analog sensors generally use analog signals such as current and voltage to output.

4. Classification according to detection range

Remote detector

Remote detectors are generally suitable for a larger range of detection, can detect the human body within tens of meters. Its advantage is that it has a large detection range and can be applied to the monitoring and detection of large places. However, due to its large detection range, it is also susceptible to interference and false positives.

Proximity detector

Close range detectors are generally suitable for small range detection, can detect the human body within a few meters. Its advantage is that the detection range is small, and it can be applied to small places or specific areas for monitoring and detection. Because of its smaller detection range, interference and false positives can be better controlled.

V. Summary

Microwave radar sensor Human detection sensor has a variety of classification methods, different classification methods have different types and characteristics. In practical applications, we need to choose the appropriate sensor type according to the specific needs and application scenarios. At the same time, with the continuous progress of science and technology and the constant change of application needs, the types and application fields of microwave radar sensors for human detection sensors will continue to expand and improve.