In 1842, Austrian physicist Christian Andreas Doppler discovered the Doppler effect. In the past two hundred years, people have applied the Doppler effect to radar, constantly innovating. Initially, it was mainly used in the military field. Today, thanks to the development of electronic science, radar has expanded to many civilian fields. The K-band 24GHz radar sensor is currently the mainstream product in the civilian field. The editor will take you to explore the specific applications of 24GHz radar sensors together.
Intelligent transportation field
In the field of intelligent transportation, 24GHz radar sensors mainly have three functions: non-contact measurement of target motion speed, distance, and azimuth angle information.
The common applications for speed measurement are radar speed sensors and checkpoint speed sensors. Currently, the mainstream radar speed sensors and checkpoint speed sensors both use 24GHz radar sensors. Compared to traditional horn antennas, 24GHz radar sensors have advantages such as small beam angle, high sensitivity, and compact size.
Ranging is a common application in car collision control. Compared to image detection, ultrasonic detection, and other methods, radar has better anti-interference ability, and even under harsh environmental conditions, it has less impact on measurement results. This has made radar the mainstream detection method for ACC cruise control systems, car blind spot detection systems, and car collision avoidance control systems. The country has also introduced relevant laws and regulations to guide the use of 24GHz radar sensors for in vehicle radar, providing policy support and industry guidance for widespread use.
Common applications for measuring azimuth angles include traffic monitoring. The traditional multi lane radar has a large beam angle and uses one radar to detect multiple lanes, which has significant problems such as low vehicle detection rate, missed vehicles, inability to locate, and difficulty in distinguishing speeding target vehicles. The use of the Swiss RFbeam company's single pulse radar K-MC4 can effectively solve these problems. K-MC4 can simultaneously measure the distance, angle, and velocity information of moving targets, achieve multi-target positioning, and accurately and reliably monitor road traffic information.
Industrial control field
We use sensors such as automatic door sensors, energy-saving escalator sensors, tunnel train detection, and printer/conveyor belt speed measurement for familiar industrial control fields. 24GHz radar sensors are widely used due to their good beam directionality and high detection sensitivity. At present, these applications still need further development and improvement, such as adding functions such as distance measurement and motion direction measurement.
Some applications such as crane collision control, radar water level gauge, unmanned aerial vehicle ranging, etc. can all be achieved using 24GHz radar sensors.
Smart home field
As night falls, when we stomp our feet and cough loudly in the hallway or stairs just to trigger voice control, have you ever worried that the noise will affect others? In this case, the 24GHz radar sensor can come in handy and light up for you without making any sound. At present, more and more European LED intelligent lighting is using 24GHz radar sensors to achieve sensing control.
Some home appliance manufacturers are also incorporating this feature into their products to achieve intelligent control. For example, installing a 24GHz radar sensor in the air conditioner can monitor in real-time whether there are people in the room and automatically turn off when there are no people, saving energy.