How to choose the three radar modules of Ai-Thinker?
Ai-Thinker
Ai-Thinker focuses on IoT module, antenna, RF test, cloud and PCBA service, to provide customers with one-stop solution
Since the launch of the continuation of the "Wi-Fi+X Great Connection" series in April - 24G human presence sensing radar module Rd-01, Ai-Thinker has continued to adhere to user needs and provide a steady stream of innovative products and technologies for the industry
Based on the concept of service, the human body sensor modules - Rd-03 and Rd-04 have been released one after another. The three modules focus on high performance and high cost performance, and help users realize intelligent product upgrades at low cost. They have a very competitive Performance advantages and broad application prospects.
So, what are the technical characteristics of these three radar modules launched by Ai-Thinker? How should users choose modules that meet their needs? After reading this article, you may have the answer.
PART?01
24G Radar+WiFi+BLE module——Rd-01
The Rd-01 radar part is equipped with ICLEGEND MICRO's S3KM111L chip, which supports the detection of three human body states: static, micro-movement, and motion. ) can also be detected.
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At the same time, the Rd-01 module uses Bouffalo lab's BL602 chip as the main control. The MCU that comes with the chip can directly transplant the radar algorithm, which can be applied to radar control and data processing, saving an MCU and reducing peripheral components. The module has a high degree of integration, which can reduce BOM cost and transplantation development cost for customers.
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The Rd-01 module configures the radar parameters through the serial port, the host computer, etc., and also supports APP parameter adjustment, allowing users to easily adjust the product’s sensing range, sensitivity, and unmanned duration through mobile phones, and supports OTA upgrades ;
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Rd-01 size is 35mm*18mm; radar detection angle coverage can reach ±60 degrees, support ceiling and wall installation, wall installation, horizontal direction ±60°, maximum detection distance 5 meters; ceiling installation, high hanging 3 meters, detection radius 3.5 meters.
Rd-01 has the ability of human presence sensing and Wi-Fi+BLE, and can directly reuse all connection schemes of Ai-WB2 series modules through Wi-Fi/BLE wireless connection features, such as direct connection to Ai-WB2, Amazon Cloud, Tmall Genie, Tencent Lianlian, and supports the Matter protocol, which can reduce development time and costs for users.
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With the data transmission function of Wi-Fi+Bluetooth, Rd-01 transmits the status information such as motion or micro-movement sensed by the radar in real time, and then sends commands through the cloud to realize the linkage between various smart home devices; suitable for smart home and smart security , life safety protection and other fields.
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PART?02
24GHz Single radar module——Rd-03
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Both Rd-01 and Rd-03 modules are integrated single-chip single-wave sensor SoCs based on FMCW frequency modulation continuous wave radar technology, working at 24GHz (K band), one receiving and one transmitting antenna, Rd-03 equipped with ICLEGEND MICRO S3KM1110 chip, it works in the 24GHz K-band, and the modulation bandwidth of each single-frequency sweep is up to 1 GHz
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Rd-03 is a single radar module, integrated with a high-performance 32-bit MCU, and the single module directly outputs the induction control signal through the transmission pin;
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Rd-03 can also use FMCW frequency modulation continuous wave to detect targets in the set space. Combined with radar signal processing, high-sensitivity motion detection and micro-motion state detection are realized.
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领英推荐
The size of Rd-03 is 20.0*20.0mm, smaller, plug and play, real-time reporting of detection results, and more conducive to use in miniaturized smart products;
This module supports two common installation methods: wall-mounted and ceiling-mounted. Wall-mounted installation has a detection angle of ±60° and a maximum detection distance of about 6.5 meters. Rd-03 supports serial port and host computer for parameter adjustment to meet different application requirements;
Rd-03 has added a noise floor inspection function, which can improve the anti-interference ability and reduce false triggers. It can shield curtains, fans, green plants and other environmental interference factors to a certain extent, reduce misjudgments, and improve the accuracy of detection results.
In addition, the detection distance interval and target disappearance delay time can be configured through the PC-side host computer visualization software tool.
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PART?03
10G microwave radar module——Rd-04
Rd-04 and Rd-03 are also single radar modules, but Rd-04 is a motion sensing module based on the X-band radar chip XBR818, with a center frequency of 10.525GHz. Its main function is to sense the micro-movement and movement of the human body. The longest distance of radar detection in the wall-mounted state is 6.5 meters, and the coverage of radar detection can reach ±50 degrees; this module has the advantages of low cost and low power consumption , with high performance, it can also help save energy and reduce costs;
The Rd-04 radar module is the smallest among the three radar modules, only 15*15mm in size, plug and play. In terms of installation, the compact size can be applied to various lamps, such as bulb lamps, downlights, ceiling lamps, etc.;
The Rd-04 radar module design uses a fixed-frequency, directional transmitting and receiving antenna (1T1R), and integrates functions such as intermediate frequency demodulation, signal amplification and digital processing. This module has an open communication serial port, and the delay time can be customized according to the needs of use.
The feature of the Rd-04 radar module is that it can integrate photosensitive detection components (optional), photosensitive function and low power consumption. It can automatically adjust the device state according to the change of ambient light, so that the light is not on during the day and the human body is detected at night. Automatic lighting to reduce power consumption and save costs.
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The Rd-04 radar module supports constant power supply mode and adjustable duty cycle low power consumption mode, and the current is as low as 110μA in pulse power supply mode. It can make the product achieve lower power consumption and longer battery life, and is suitable for some low-power application scenarios such as video doorbells, peepholes, door locks, low-power cameras, smart litter boxes, feeders, etc.
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Conclusion
The three radar modules Rd-01, Rd-03 and Rd-04 can penetrate the non-metallic shell, and the signal penetration is strong; and the anti-interference performance is good, not affected by temperature, humidity, water mist, dust and other environments factors.
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The three modules all use radar sensing technology to achieve high-precision measurement of human dynamic targets, etc., and have a wide range of application scenarios.
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All three modules support various installation methods, such as ceiling hanging and wall hanging. Users can choose the installation method that suits them according to their application requirements.
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The three human presence sensing modules can realize the flexible and adjustable sensing distance, which can detect the target in the set space and identify the target state; a single distance gate can be set, and the sensitivity of each distance gate can be controlled separately. Accurately adjust the detection in different distance ranges, and have strong anti-interference ability.
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At present, these three module products are on the shelves of Ai-Thinker's official Alibaba store, and interested friends can go to buy them.
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