What are the advantages of microwave sensor probes?

Microwave sensor probes are widely used in glass doors (most commonly in the automatic doors of shopping malls, hotels, banks, airports, etc.).

Its core function is to detect the approach of people or objects and control the automatic opening and closing of the glass door accordingly.

Its specific functions, principles, and advantages are:

I. Main Functions

Automatic Door Opening: When someone approaches the glass door, the microwave sensor detects the movement and sends a signal to the door's control system, causing the door to open automatically for unobstructed passage.

Preventing People from Being Trapped in the Door:** During the door closing process, if the sensor continuously detects people or objects within the door's movement range, it immediately commands the door to stop closing and reopen, effectively preventing injuries and ensuring high safety.

Maintaining an Open State:** During peak traffic periods, it can sense continuous foot traffic, keeping the door open and improving passage efficiency.

Automatic and Smooth Closing:** After people leave the detected area, the sensor automatically and smoothly closes the door after a few seconds (adjustable time), saving energy (e.g., maintaining indoor air conditioning temperature).

II. Working Principle The working principle of a microwave sensor is the Doppler radar effect.

Emitting Microwaves: The sensor continuously emits high-frequency, low-power electromagnetic waves (microwaves).

Receiving Echoes: These microwaves reflect back when they encounter an object in front of them and are received by the sensor.

Trigger Signal: Once this frequency change is detected, the sensor determines that "a moving object has entered the detection area" and triggers an opening signal.

In summary, the "microwave sensor" you mentioned is the "eyes" and "brain" of the automatic glass door. It detects pedestrians by emitting and receiving microwaves, thereby enabling the automatic, safe, and intelligent opening and closing of the door. It is an indispensable convenience and safety device in modern buildings.