Use of 5.8G microwave radar module, working principle and introduction of 5.8G microwave radar module

5.8G Introduction to microwave radar module

5.8G Microwave radar module is a famous open source hardware supplier in China DFRobot A new product with high sensitivity 5.8G Hz Millimeter wave human presence detection radar module . It is different from the tradition that we can only judge whether there is a difference by detecting the large range of human movements , This module can detect tiny movements such as human respiration with very high sensitivity to judge whether there is a person . So whether the human body is sitting still , Sleeping and other states can accurately perceive the presence of personnel .

5.8G How to use microwave radar module ？

5.8G The induction result of microwave radar module can be output through serial port or through I/O Port high and low level output , And the sensor module has strong inductive reliability 、 High sensitivity 、 Small volume 、 Easy to use 、 Strong anti-interference 、 Easy to embed and integrate . It can be widely used in lighting 、 Security 、 Home Furnishing 、 Home appliance 、 The hotel 、 The garage 、 building 、 Traffic, etc. need to detect human body micro motion 、 Sports industry .

5.8G Introduction to technical specifications of microwave radar module

Working voltage ：4.5~5.5V

Working current ：22mA

Detection distance ：11m

Equivalent transmit power ：3-5dBM

Beam angle ：120*120°

Modulation mode ：FMCW、CW

Working frequency ：24GHz

working temperature ：-40~85℃

Baud rate ：115200

Size ：24*28mm

5.8g Radar module jamming problem

It should be noted that the module directly irradiates the air conditioner 、 The curtain 、 Fan 、 Green plants, etc , Because if these objects swing, the module may be misidentified ;

At the same time, it is necessary to pay attention to the module beam irradiating to the ground 、 Walls or doors , Produces multiple reflections similar to specular reflections , The above interferences are indirectly detected ;

The appropriate farthest detection distance 、 sensitivity 、 The delay time parameter configuration can eliminate the interference of some objects .

When multiple modules are installed centrally , Keep in touch with each other 1.5m The above spacing , Irradiation in the same direction or in the opposite direction to prevent each module from irradiating each other