The radar module has a wide range of applications. In particular, it plays a vital role in IoT construction environments. The working bands of different radar modules vary greatly. So, the appropriate module selection should depend on the specific application environment and the required performance indicators.
Ai-Thinker has launched several radar modules, including Rd-01, Rd-03, Rd-03D, Rd-03E, and Rd-04, to meet the diverse needs of industry users. When selecting a radar module, how should you consider your specific requirements?
Ai-Thinker Radar Module Selection 
24G Radar+Wi-Fi+BLE Module Rd 01
Equipped with Silicon Microelectronics’ S3KM111L chip, the Rd-01 radar part supports the detection of three human body states: human presence, micro-movement, and motion. (Human existence refers to a person who is almost motionless but has a heartbeat, breathing, etc.)
The Wi-Fi+BLE part of the module uses the Boliu BL602 chip, which can be used for radar parameter adjustment and data transmission, reducing peripheral components. The module has high integration and can reduce BOM costs for customers.
The Rd-01 size is 35mm*18mm, and the angle coverage range of radar detection can reach ±60 degrees. It supports ceiling-mounted and wall-mounted installation. The horizontal direction of the wall-mounted installation is ±60°, and the maximum detection distance is 5 meters; the ceiling-mounted installation has a hanging height of 3 meters, detection radius 3.5 meters.
24GHz Single Radar Module Rd-03
Equipped with SiDianMicro’s S3KM1110 chip, Rd-03 operates in the 24GHz K-band, with a modulation bandwidth of up to 1GHz for each frequency scan. Rd-03 is a single radar module that integrates a high-performance 32-bit MCU and can directly output induction control signals.
Rd-03 can also use FMCW frequency modulation continuous waves to detect targets in a set space. Combined with radar signal processing, it can achieve high-sensitivity motion and micro-motion status detection.
Measured 20.0*20.0 mm, Rd-03 is small in size, plug-and-play, and reports detection results in real-time. Thus, it is more conducive to use in the minimum products.
This module supports two common types of installation: wall-mounted and ceiling-mounted. The wall-mounted installation has a detection angle of ±60° and a maximum detection distance of approximately 6.5 meters. Rd-03 supports serial port and host computer for parameter adjustment to adapt to different application needs.
Rd-03 has a new noise floor check function, which can improve the anti-interference ability and reduce false triggers. The new function can block out certain environmental interference factors like curtains, fans, and green plants and increase the accuracy of detection results.
Human Body Motion Trajectory Tracking Radar Module Rd-03D
Rd-03D is a 24GHz one-transmit and two-receive radar module that can detect multiple targets in a designated area and report the results in real-time. It accurately senses the human body and regional motion status. Equipped with an intelligent algorithm, Rd-03D realizes motion trajectory identification and tracking. And it achieves the measurement of speed and distance in the target areas.
It can serve in various industry scenarios like intelligently controlling the operation of home appliances such as air conditioners and fans, intelligent toilets, sensor lights, desk lamps, mirror lights, and intelligently adjusting screen brightness.
The Rd-03D radar module size is 15*44mm, the adjustable distance resolution is 0.75m, and the ranging accuracy is 0.15m; the detection range azimuth angle is ±60°, and the elevation angle is ±30°. It has the characteristics of plug-and-play and quick configuration.
The Rd-03D radar module can detect three targets at the same time. And the detection distance can reach 8 meters. Detect the positions of multiple human bodies in the interval in real time and distinguish the movement trajectories of people in the scene.
Precise Ranging/Gesture Recognition Radar Module Rd-03E
Rd-03E is a 24GHz transmit-receive radar module that can detect and identify motion and micro-moving of human bodies. And it can report real-time distances. It can detect targets and gestures in designated areas and report in real-time.
Rd-03E adopts an FMCW frequency modulation continuous wave radar system to detect human targets in the scene, and the accurate ranging algorithm reports the human sensing position in real time. It can distinguish human body movement and micro-movement status, independently configure the detection area, and shield interference outside the area. We can set the sensing range, and the distance measurement accuracy is ±5cm.
It can intelligently recognize gesture actions. It can realize non-contact control such as non-contact gesture switch, human body close wake-up, motion sensing, and human presence sensing.
Rd-03E radar module size is 28*24mm, adopts DIP package, standard 2.54mm pin header. We can quickly embed it into the product motherboard with a wall-mounted installation. That is flexible and convenient.
10GHz Radar Module Rd-04
Rd-04 is a motion sensing module designed based on the X-band radar chip XBR818, with a 10.525GHz center frequency. Its primary function is to sense micro-movements and movements of the human body. The longest distance of radar detection is 6.5 meters when mounted on the wall, and the coverage range of radar detection can reach ±50 degrees.
Rd-04 size is 15*15mm, suitable for all types of lamps, such as bulbs, downlights, ceiling lamps, etc.
The Rd-04 radar module supports normal power supply mode and adjustable duty cycle low power consumption mode. The current in pulse power supply mode is as low as 110μA. It enables products to achieve lower power consumption and longer battery life. It is suitable for some low-power application scenarios, such as video doorbells, cat eyes, door locks, low-power cameras, intelligent cat litter boxes, feeders, etc.
LCSC is the authorized distributor of Ai-Thinker. And LCSC is a global distributor with an extensive selection of electronic components, with more than 4 million registered customers worldwide. LCSC electronics is known to customers for offering in-stock inventory for fast delivery since LCSC owns 130,000㎡ intelligent warehouses. Select Ai-Thinker’s radar module products at LCSC Electronics.
