Rd-03 Specification V1.1.1 Rd-03 Specification Version V1.1.1 Copyright 2023 Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 1 of 19 Rd-03 Specification V1.1.1 Document resume Version V1.1.0 V1.1.1 Date 2023.05.11 2023.05.31 Develop/revise content First Edition Change the packaging Edition Jiye Yang Jiye Yang Approve Ning Guan Ning Guan Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 2 of 19 Rd-03 Specification V1.1.1 Content 1. Product Overview .....................................................................................................................4 1.1. Characteristic.................................................................................................................5 2. Main parameters....................................................................................................................... 6 2.1. Static electricity requirements....................................................................................... 6 2.2. Electrical characteristics................................................................................................6 2.3. Radar sensing range.......................................................................................................7 2.4. Power.............................................................................................................................7 3. Appearance size........................................................................................................................8 4. Pin definition............................................................................................................................ 9 5. Schematic diagram................................................................................................................. 10 6. Design guidance ..................................................................................................................... 11 6.1. Application guide circuit............................................................................................. 11 6.2. Recommended PCB package size............................................................................... 11 6.3. Precautions for radar installation.................................................................................12 6.4. Installation environment requirements........................................................................12 6.5. Installation mode and induction range ........................................................................ 13 6.6. Power Supply...............................................................................................................15 6.7. GPIO ............................................................................................................................15 7. Storage conditions.................................................................................................................. 16 8. Reflow welding curve diagram .............................................................................................. 16 9. Product package information..................................................................................................17 10. Contact us............................................................................................................................. 17 Disclaimer and copyright notice.................................................................................................18 Notice......................................................................................................................................... 18 Statement.................................................................................................................................... 19 Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 3 of 19 Rd-03 Specification V1.1.1 1. Product Overview Rd-03 is a radar module developed by Shenzhen Ai-Thinker Technology Co., LTD. It equipped with silicon micro-S3KM1110 chips. S3KM1110 is an integrated single-chip millimeter-wave sensor SoC based on FMCW radar transceiver technology.Operates in 24 GHz K-band with up to 1 GHz modulation bandwidth per frequency. FMCW continuous wave is used to detect the target in the set space. Combined with radar signal processing and accurate human body sensing algorithm, high sensitivity human presence state sensing can be realized to recognize human body in motion and static state. The Rd-03 module can sense whether there is a moving or micro-moving human body in the area, and realize real-time detection results. A visual configuration tool is provided to easily configure the sensing distance range, sensing sensitivity in different intervals and unmanned delay time, etc. Figure 1 S3KM1110 architecture diagram Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 4 of 19 Rd-03 Specification V1.1.1 1.1. Characteristic DIP package, standard 2.54mm pin Radar support 24 GHZ ISM frequency band The radar antenna supports 1 receive and 1 transmit, antenna beam narrow, high resolution, frequency bandwidth, strong anti-interference The radar's max sensing range is up to 5 meters Radar angle is big, range of 60 degrees Radar range and accurate recognition, support induction range, shielding range outside interference Ultra-small size20*20mm, Plug and play, real-time reporting of detection results The intelligent adjustment of radar parameters can be realized through the serial port, which is convenient and fast Support various installation methods such as ceiling and wall Support UART Typical application scenarios Human sensor light control Human body induction wake-up of advertising screen and other equipment life safety protection Smart Appliances Smart Security smart lighting New energy charging/parking monitoring facilities Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 5 of 19 Rd-03 Specification V1.1.1 2. Main parameters Table 1 main parameters Model Package Size Antenna Frequency Operation temperature Storage environment Power supply Interfaces UART rate Rd-03 DIP-5 20.0*20.0(0.2)mm On-board antenna 24G ~24.25GHz
-40 ~ 85
-40 ~ 125, < 90%RH Support voltage 3.0V ~ 3.6V, power supply current 200mA UART Default 115200 bps 2.1. Static electricity requirements Rd-03 is an electrostatic sensitive equipment, special precautions should be taken during handling. Figure 2 ESD anti-static diagram 2.2. Electrical characteristics Table 2 Electrical Characteristics Table Parameter Power supply I/O VIL VIH VOL VOH Conditio n VDD
Min. 3.0 0 2.3 0 2.45 Typical value 3.3
Max. 3.6 0.8 VDD 0.45 VDD Unit V V V V V Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 6 of 19 Rd-03 Specification V1.1.1 2.3. Radar sensing range Table 3 Radar induced range Installation Wall hanging mode (60range) Ceiling method (3m hanging height), circular projection radius Notice Min.
Typical value 10 5 Max.
Unit m m The above sensing distance is measured based on the open space of Anxinke, for reference only. The radar sensing distance is greatly affected by surrounding walls, ceilings, large-sized objects, and installation methods. The actual measurement data of the installation environment shall prevail. 2.4. Power The following power consumption data is based on a 3.3V power supply and an ambient temperature of 25C Table 4 Power Consumption Table Model working status Min.
AVG 50 Max.
Unit mA Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 7 of 19 3. Appearance size Rd-03 Specification V1.1.1 Front Back Figure 3 Appearance diagram (rendering diagram is for reference only, subject to the actual object Front Back Figure 4 Size chart Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 8 of 19 Rd-03 Specification V1.1.1 4. Pin definition Rd-03 connects to a total of 5 interfaces, for example, the pin diagram, the pin function definition table is the interface definition Front Back Figure 5 Pin diagram Table 5 Definition table of pin functions Function input power Ground UART_TX UART_RX Detection result output, output high level when sensing, output low level when not sensing No. 1 2 3 4 5 Name 3V3 GND OT1 RX OT2 Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 9 of 19 5. Schematic diagram Rd-03 Specification V1.1.1 Figure 6 Schematic diagram Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 10 of 19 Rd-03 Specification V1.1.1 6. Design guidance 6.1. Application guide circuit Figure 7 Application guide circuit 6.2. Recommended PCB package size Figure 8 Recommended PCB package size Note:
Rd-03 module adopts standard pin header interface with 5pin-2.54mm spacing Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 11 of 19 Rd-03 Specification V1.1.1 6.3. Precautions for radar installation In motherboard installation position, it is recommended that the following several ways:
As far as possible to ensure that the radar antenna is opposite to test area, and the antenna around open without sunscreen. ensure that the radar installation position is firm, stable, shaking will influence the effect of detection of radar itself. ensure that there won't be on the back of radar object movement or vibration. Due to the penetrating nature of radar waves, the antenna signal back lobe may detect moving objects on the back of the radar. A metal shield or metal backplane can be used to shield the radar back flap to weaken the influence of objects on the back of the radar. The theoretical range accuracy of radar is obtained by special algorithm on the basis of the physical resolution of 0.75m. As target size, condition, different, such as RCS target distance accuracy will fluctuate; And the farthest distances fluctuate a little bit. In order to meet the performance of on-board antenna, antenna surrounding prohibited, metal pieces, far away from the high frequency components. 6.4. Installation environment requirements This product needs to be installed in a suitable environment. If it is used in the following environments, the detection effect will be affected:
Induction of continuous movement in the area of nonhuman objects, such as animals, sustained oscillation of the curtain, is the outlet of the large strain of green plant, etc. induction area exists the strong reflector of large area, strong reflector is of the radar antenna can cause interference. When mounting the wall, need to consider the top of the indoor air conditioning, electric fan etc. External interference factors. Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 12 of 19 6.5. Installation mode and induction range Hanging roof installation Rd-03 Specification V1.1.1 Figure 9 Schematic diagram of mounting the roof Figure 10 Schematic diagram of the direction of the ceiling Figure 11 Radar map of the ceiling Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 13 of 19 Wall mounting mode Rd-03 Specification V1.1.1 Figure 12 Schematic diagram of wall mounting Figure 13 Schematic diagram of wall-mounting direction Figure 14 Wall-mounted radar char Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 14 of 19 Rd-03 Specification V1.1.1 6.6. Power Supply Recommended voltage is 3.3V and the peak current is above 200mA. Recommended to use LDO as power supply ; If using DC-DC, it is recommended to control ripple within 30mV. DC - DC power supply circuit suggested the reserved capacitance position, dynamic response can be large changes in load and optimize the output ripple. 3.3V power supply interface increases ESD device is recommended. Figure 15 DC-DC step-down circuit diagram 6.7. GPIO Some IO ports are drawn from the periphery of the module. If necessary, it is recommended to use 10-100 ohm resistors in series on the IO ports. It can suppress overshoot, so make level both sides more smoothly. It helps EMI and ESD. Special IO mouth pull up or down, need to refer to instructions on the use of the specification, here will affect the launch configuration module. Module IO port is 3.3 V if the master IO mouth level does not match with module, need to increase the level conversion circuit. If IO mouth directly connected to the peripheral interface, or terminal, such as row needles, and Suggestions on the IO mouth line near the terminal obligate ESD device. Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 15 of 19 Figure 16 Level switching circuit Rd-03 Specification V1.1.1 7. Storage conditions Products sealed in moisture-proof bags should be stored in a non-condensing atmosphere at
<40/90%RH. The module's moisture sensitivity level MSL is level 3. After the vacuum bag is unwrapped, it must be used within 168 hours at 255/60%RH. Otherwise, it needs to be baked before it can be put on line again. 8. Reflow welding curve diagram Figure 17 Reflow welding curve Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 16 of 19 Rd-03 Specification V1.1.1 9. Product package information The Rd-03 module is packaged in tape at 200 pcs /reel. As shown in the figure below:
Figure 18 Packaging packing diagram 10.Contact us Ai-Thinker official website Tmall shop Official Forum Taobao shop Develop DOCS Alibaba shop LinkedIn Technical support Email: support@aithinker.com Domestic business cooperation: sales@aithinker.com Overseas business cooperationoverseas@aithinker.com Company address: Room 403,408-410, Block C, Huafeng Smart Innovation Port, Gushu 2nd Road, Xixiang, Baoan District, Shenzhen. Tel: 0755-29162996 WeChat mini WeChat official Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 17 of 19 Rd-03 Specification V1.1.1 Disclaimer and copyright notice The information in this article, including the URL address for reference, is subject to change without notice. The document is provided "as is" without any guarantee responsibility, including any guarantee for merchantability, suitability for a specific purpose, or non-infringement, and any guarantee mentioned elsewhere in any proposal, specification or sample. This document does not bear any responsibility, including the responsibility for infringement of any patent rights arising from the use of the information in this document. This document does not grant any license for the use of intellectual property rights in estoppel or other ways, whether express or implied. The test data obtained in the article are all obtained from Ai-Thinker's laboratory tests, and the actual results may vary slightly. All brand names, trademarks and registered trademarks mentioned in this article are the property of their respective owners, and it is hereby declared. The final interpretation right belongs to Shenzhen Ai-Thinker Technology Co., Ltd. Notice Due to product version upgrades or other reasons, the contents of this manual may be changed. Shenzhen Ai-Thinker Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Shenzhen Ai-Thinker Technology Co., Ltd. makes every effort to provide accurate information in this manual. However, Shenzhen Ai-Thinker Technology Co., Ltd. does not guarantee that the contents of the manual are completely free of errors. All statements and information in this manual. And the suggestion does not constitute any express or implied guarantee. Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 18 of 19 Rd-03 Specification V1.1.1 Statement Ai-Thinker may provide technical and reliability data (including data sheets), design resources
(including reference designs), application or other design recommendations, network tools, safety information and other resources (the "Resources") "as is" without warranties of any kind, express or implied. Including, but not limited to, express or implied warranties of suitability, fitness for a particular use, or non-infringement of any third party's intellectual property rights.And specifically declares that it is not liable for any necessary or incidental losses, including but not limited to, arising from the application or the use of any of our products and circuits. Ai-Thinker reserves the right to release information in this document (including but not limited to metrics and product descriptions) and any changes to our products without prior notice. This document automatically supersedes and replaces all information provided in previous versions of the same document number file. These resources are available to skilled developers who design with Ai-Thinker products. You are solely responsible for: (1) Selecting the appropriate Ai-Thinker products for your application; (2) Design, validate, and run your application and product throughout its life cycle;
(3) Ensure that your application meets all applicable standards, codes and laws, as well as any other functional security, information security, regulatory or other requirements. Ai-Thinker may authorize you to use these resources only for the development of applications of Essence Products described in this Resource. Without the permission of Ai-Thinker, any unit or individual shall not extract or copy part or all of these resources, and shall not be transmitted in any form. You are not entitled to use any other Ai-Thinker intellectual property rights or any third party intellectual property rights. You shall indemnify you in full for any claims, damages, costs, losses and liabilities arising against Ai-Thinkeror its representatives in connection with the use of these resources, for which Ai-Thinker is not liable. The products offered by Ai-Thinker are subject to the terms of sale of Ai-Thinker or other applicable terms attached to Essence's products. Essence's availability of these resources does not extend or otherwise change the warranties or warranties disclaimers applicable to product releases. Copyright 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 19 of 19 FCC WARNING This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help. To maintain compliance with FCCs RF Exposure guidelines, This equipment should be installed and operated with minimum 20cm distance between the radiator and your body: Use only the supplied antenna.